There is no limit to creativity, and the instrument is invented. Today we introduce a national invention patent for the invention - large-aperture gas medium electric valve. The patent was applied for by Beijing Huachuang Langrun Environmental Technology Co., Ltd. and was authorized to be announced on March 15, 2017.
Description
The invention relates to the field of valve technology, in particular to a large-aperture gas medium electric valve.
Background of the invention
There are many kinds of valves in the prior art, such as ball valves, butterfly valves, gate valves, etc. These valves, such as ball valves and butterfly valves, are mainly used for liquid gate control, which is very cumbersome for gas gating, high in price, and insufficient in sealing. . When the gate valve is used for opening and closing of the gas fluid, the sealing function cannot be realized at all due to the structure, and the large-diameter valve is few and expensive.
Summary of the invention
The invention provides a large-aperture gas medium electric valve, which is applied to a gas passage seal. Compared with a ball valve, a butterfly valve and a gate valve, it is not only more lightweight, but also greatly improves the sealing performance of the valve, and can manufacture various large-diameter valves, suitable for Various ventilation pipelines completely solve the technical problem that the gate valve application cannot be sealed on the gas fluid, especially the large-diameter valve application on the gas fluid.
Preferably, an elastic sealing gasket is disposed between the shutter and the vent of the substrate. A sealing oil groove is disposed on a lower surface of the substrate, and a sealing grease is disposed in the sealing oil groove. The linear driving device includes a nut fixedly mounted on the pressing plate, a screw is installed in the nut, a rotating gear motor is connected to the lead screw, and the geared motor is fixedly mounted on the auxiliary shutter. A connecting pin is disposed between the pressure plate and the shutter. The shutter is provided with a sealing for sealing a gap between the lead screw and the shutter. The number of the guiding columns is four, and the elastic element comprises four springs corresponding to the guiding columns in one-to-one correspondence, and each of the springs is sleeved on the corresponding guiding column. a first mechanical limit switch for protecting the geared motor after the upper limit position sensor is damaged is provided on the gate plate, and the auxiliary mechanical substrate is provided with a second mechanical limit for protecting the geared motor after the lower limit position sensor is damaged switch.
According to the above technical solution, the beneficial effects of the present invention are as follows: the outer casing of the large-aperture gas medium electric valve is respectively provided with a substrate and an auxiliary substrate, the vent is provided on the substrate, and the pressing plate and the ram are slidingly mounted on the guiding column. An elastic element is arranged between the pressure plate and the shutter, and the pressure plate is connected with a linear driving device for driving the upper and lower reciprocating motion thereof. The pressure plate is provided with an upper limit position sensor, and the auxiliary substrate is provided with a lower limit position sensor. During operation, the geared motor drives the lead screw to rotate, and the rotating motion of the lead screw is converted into the up and down movement of the pressure plate through the nut on the pressure plate, and the pressure plate pushes the lower plate to move downward through the spring, thereby realizing the opening and closing of the valve. When the valve needs to be closed, the shaft of the geared motor drives the screw to rotate. There is a nut matched with the lead screw on the pressure plate. The screw rod causes the pressure plate to move upward, and the four guide columns ensure the balance of the pressure plate during movement, and the movement of the pressure plate When it reaches the top, the pressure plate presses the spring, the spring presses the shutter, and there is an elastic sealing gasket between the shutter and the vent of the substrate. The gasket is coated with sealing grease. After the gate is pressed against the gasket, the air passage is closed. The upper limit position sensor detects a certain relative position between the pressure plate and the shutter, and the spring accumulates sufficient pressure to compact the sealed vent, and the sensor gives a signal to control the speed reduction motor to stop rotating, so that the ram seals the vent after sealing, the pressure plate No longer continue to exercise, it can ensure the compaction of the ram and avoid mechanical damage. When the valve needs to be opened, the motor shaft rotates in the opposite direction. Similarly, the lower limit position sensor gives a signal when the pressure plate reaches a given position, and the motor stops rotating, realizing the opening of the valve.
The invention has the following advantages in the application of the spring in the structure. Firstly, the pressure required for the ram is ensured, and the four guide columns are matched to make the ram with uniform force; secondly, sufficient reaction space can be reserved for the operation of the motor. The motor can rotate more than one turn or one turn to ensure the sealing effect, and effectively protect the quality and life of the valve. Third, connect the pin through the pressure plate to give the spring an initial pressure, so that the gate and the pressure plate maintain a square Relative position, such that when the screw is rotated, the ram plate can slide freely on the guide post without getting stuck, and the inventors have designed the laminated sealing structure of the electric valve by creative thinking, and the sealing of the valve depends on The pressure between the ram and the elastic gasket, the gasket has a certain elasticity, as long as the ram can reach a certain pressure, can achieve a good seal, greatly improving the sealing performance of the valve.
Since the lower surface of the substrate is provided with a sealing oil groove, the sealing effect of the elastic sealing gasket is further supplemented. Since the sealing plate is provided with a seal, the gap between the lead screw and the shutter can be effectively sealed. Since the first mechanical limit switch is arranged on the gate, the second mechanical limit switch is arranged on the auxiliary substrate. If the upper limit position sensor is damaged, when the pressure plate and the shutter are too close, the first mechanical limit switch is normally closed. When the point is disconnected, the geared motor stops supplying power; if the lower limit position sensor is damaged, the pressure plate is too close to the auxiliary substrate, the second mechanical limit switch normally closes the contact, and the geared motor stops supplying power, so that the valve can be better protected. damage.
In summary, the present invention is applied to a gas passage seal, which is not only more lightweight than a ball valve, a butterfly valve, or a gate valve, but also greatly improves the sealing performance of the valve, and can manufacture various large diameter valves, which are suitable for various ventilation pipelines. It completely solves the technical problem that the gate valve application can not achieve sealing on the gas fluid, especially the large-diameter valve application, and has far-reaching significance in the valve field.
Description
The invention relates to the field of valve technology, in particular to a large-aperture gas medium electric valve.
Background of the invention
There are many kinds of valves in the prior art, such as ball valves, butterfly valves, gate valves, etc. These valves, such as ball valves and butterfly valves, are mainly used for liquid gate control, which is very cumbersome for gas gating, high in price, and insufficient in sealing. . When the gate valve is used for opening and closing of the gas fluid, the sealing function cannot be realized at all due to the structure, and the large-diameter valve is few and expensive.
Summary of the invention
The invention provides a large-aperture gas medium electric valve, which is applied to a gas passage seal. Compared with a ball valve, a butterfly valve and a gate valve, it is not only more lightweight, but also greatly improves the sealing performance of the valve, and can manufacture various large-diameter valves, suitable for Various ventilation pipelines completely solve the technical problem that the gate valve application cannot be sealed on the gas fluid, especially the large-diameter valve application on the gas fluid.
Figure is a schematic view of the structure of the present invention
The technical solution of the present invention is realized as follows: a large-aperture gas medium electric valve includes an outer casing, wherein the outer casing is respectively mounted with a substrate and an auxiliary substrate, and the substrate is disposed above the auxiliary substrate, and the substrate is disposed on the substrate a vent is provided, and a plurality of guiding columns are disposed between the substrate and the auxiliary substrate, and a sliding plate and a shutter for controlling opening and closing of the vent are slidably mounted on the guiding column, and between the pressing plate and the shutter An elastic member is disposed, and the pressure plate is connected with a linear driving device for driving the upper and lower reciprocating motion thereof, and the pressing plate is provided with an upper limit position sensor for detecting a relative position between the pressure plate and the shutter, and the auxiliary substrate is provided with A lower limit position sensor for detecting a relative position between the pressure plate and the auxiliary substrate. Preferably, an elastic sealing gasket is disposed between the shutter and the vent of the substrate. A sealing oil groove is disposed on a lower surface of the substrate, and a sealing grease is disposed in the sealing oil groove. The linear driving device includes a nut fixedly mounted on the pressing plate, a screw is installed in the nut, a rotating gear motor is connected to the lead screw, and the geared motor is fixedly mounted on the auxiliary shutter. A connecting pin is disposed between the pressure plate and the shutter. The shutter is provided with a sealing for sealing a gap between the lead screw and the shutter. The number of the guiding columns is four, and the elastic element comprises four springs corresponding to the guiding columns in one-to-one correspondence, and each of the springs is sleeved on the corresponding guiding column. a first mechanical limit switch for protecting the geared motor after the upper limit position sensor is damaged is provided on the gate plate, and the auxiliary mechanical substrate is provided with a second mechanical limit for protecting the geared motor after the lower limit position sensor is damaged switch.
According to the above technical solution, the beneficial effects of the present invention are as follows: the outer casing of the large-aperture gas medium electric valve is respectively provided with a substrate and an auxiliary substrate, the vent is provided on the substrate, and the pressing plate and the ram are slidingly mounted on the guiding column. An elastic element is arranged between the pressure plate and the shutter, and the pressure plate is connected with a linear driving device for driving the upper and lower reciprocating motion thereof. The pressure plate is provided with an upper limit position sensor, and the auxiliary substrate is provided with a lower limit position sensor. During operation, the geared motor drives the lead screw to rotate, and the rotating motion of the lead screw is converted into the up and down movement of the pressure plate through the nut on the pressure plate, and the pressure plate pushes the lower plate to move downward through the spring, thereby realizing the opening and closing of the valve. When the valve needs to be closed, the shaft of the geared motor drives the screw to rotate. There is a nut matched with the lead screw on the pressure plate. The screw rod causes the pressure plate to move upward, and the four guide columns ensure the balance of the pressure plate during movement, and the movement of the pressure plate When it reaches the top, the pressure plate presses the spring, the spring presses the shutter, and there is an elastic sealing gasket between the shutter and the vent of the substrate. The gasket is coated with sealing grease. After the gate is pressed against the gasket, the air passage is closed. The upper limit position sensor detects a certain relative position between the pressure plate and the shutter, and the spring accumulates sufficient pressure to compact the sealed vent, and the sensor gives a signal to control the speed reduction motor to stop rotating, so that the ram seals the vent after sealing, the pressure plate No longer continue to exercise, it can ensure the compaction of the ram and avoid mechanical damage. When the valve needs to be opened, the motor shaft rotates in the opposite direction. Similarly, the lower limit position sensor gives a signal when the pressure plate reaches a given position, and the motor stops rotating, realizing the opening of the valve.
The invention has the following advantages in the application of the spring in the structure. Firstly, the pressure required for the ram is ensured, and the four guide columns are matched to make the ram with uniform force; secondly, sufficient reaction space can be reserved for the operation of the motor. The motor can rotate more than one turn or one turn to ensure the sealing effect, and effectively protect the quality and life of the valve. Third, connect the pin through the pressure plate to give the spring an initial pressure, so that the gate and the pressure plate maintain a square Relative position, such that when the screw is rotated, the ram plate can slide freely on the guide post without getting stuck, and the inventors have designed the laminated sealing structure of the electric valve by creative thinking, and the sealing of the valve depends on The pressure between the ram and the elastic gasket, the gasket has a certain elasticity, as long as the ram can reach a certain pressure, can achieve a good seal, greatly improving the sealing performance of the valve.
Since the lower surface of the substrate is provided with a sealing oil groove, the sealing effect of the elastic sealing gasket is further supplemented. Since the sealing plate is provided with a seal, the gap between the lead screw and the shutter can be effectively sealed. Since the first mechanical limit switch is arranged on the gate, the second mechanical limit switch is arranged on the auxiliary substrate. If the upper limit position sensor is damaged, when the pressure plate and the shutter are too close, the first mechanical limit switch is normally closed. When the point is disconnected, the geared motor stops supplying power; if the lower limit position sensor is damaged, the pressure plate is too close to the auxiliary substrate, the second mechanical limit switch normally closes the contact, and the geared motor stops supplying power, so that the valve can be better protected. damage.
In summary, the present invention is applied to a gas passage seal, which is not only more lightweight than a ball valve, a butterfly valve, or a gate valve, but also greatly improves the sealing performance of the valve, and can manufacture various large diameter valves, which are suitable for various ventilation pipelines. It completely solves the technical problem that the gate valve application can not achieve sealing on the gas fluid, especially the large-diameter valve application, and has far-reaching significance in the valve field.
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