Air source control mechanism for valve positioner

Abstract

The utility model discloses an air source control mechanism for a valve positioner, which relates to the technical field of valve components, comprises an air source controller main body and an air delivery pipe arranged on the air source controller main body, and is characterized by further comprising a water outlet which is arranged at the bottom close to the end part of the air delivery pipe; the plugging piece is rotationally mounted on the inner ring of the gas conveying pipe, and a sealing plug is fixedly mounted on one side; by opening the electric push rod, the driving end of the electric push rod can be shortened to drive the blocking piece to rotate upwards with the limiting base as the axis and be perpendicular to the inner ring of the gas conveying pipe, the inner ring of the gas conveying pipe can be blocked, then the electromagnetic valve is opened, and water is injected into the gas conveying pipe through the high-pressure water gun. The dust on the inner ring of the air delivery pipe can be scoured, and then the scoured sewage is discharged through the water outlet, so that the cleaning work can be completed, the resistance encountered by compressed air in the air delivery pipe in the delivery process is reduced, and the energy consumption of an air source is saved.

Description

Technical Field

[0001] This utility model relates to the field of valve assembly technology, specifically to a gas source control mechanism for a valve positioner. Background Technology

[0002] The air supply control mechanism of the valve positioner is mainly responsible for receiving control signals and converting them into air signals to drive the regulating valve, thereby precisely controlling the valve opening. The air source is usually compressed air from an air compressor station. Before entering the valve positioner, the compressed air passes through an air filter and pressure reducing valve to ensure its purity and stability. Subsequently, the air from the pressure reducing valve outlet enters the valve positioner, and the amount of air entering the valve's diaphragm is determined by the signal output from the controller. The air supply control mechanism is usually equipped with an air guide pipe responsible for transmitting compressed air to drive the valve positioner.

[0003] However, after prolonged use, the inner wall of the air pipe on the existing valve positioner air source control mechanism is prone to a large amount of dust accumulation. When a large amount of dust accumulates inside the air pipe, this dust may block the air pipe passage, causing airflow obstruction. Due to the obstructed airflow, the compressed air may encounter more resistance during transmission, thus requiring greater energy consumption to overcome these resistances to ensure sufficient air pressure and flow to reach the valve positioner. Therefore, unnecessary air source energy consumption is increased invisibly.

[0004] To address this issue, we designed a pneumatic control mechanism for valve positioners. Utility Model Content

[0005] The purpose of this invention is to provide a gas source control mechanism for a valve positioner to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a gas source control mechanism for a valve positioner, including a gas source controller body and a gas supply pipe installed on the gas source controller body, and further including...

[0007] The drain outlet is located at the bottom near the end of the gas pipeline;

[0008] The sealing component is rotatably installed on the inner ring of the gas pipeline, and a sealing plug is fixedly installed on one side. The sealing plug is slidably inserted into the drain outlet to seal the drain outlet.

[0009] The fixing component is fixedly installed on the inner ring of the gas pipeline, and an electric push rod is rotatably provided between it and the sealing component to drive the movement of the sealing component;

[0010] The solenoid valve is located at the top of the gas pipeline, away from the end of the sealing component, and is used to inject cleaning fluid into the gas pipeline for flushing.

[0011] Furthermore, a mounting base is provided on one side of the fixing member, a fixing base is provided on one side of the sealing member, and the two ends of the electric push rod are respectively rotatably disposed in the mounting base and the fixing base.

[0012] Furthermore, a first pin is provided in the mounting base, a second pin is provided in the fixing base, and the two ends of the electric push rod are respectively rotatably sleeved on the first pin and the second pin.

[0013] Furthermore, the inner ring of the gas pipeline is provided with a limiting seat, and the sealing element is rotatably disposed within the limiting seat.

[0014] Furthermore, a third pin is provided inside the limiting seat, and the sealing member is rotatably sleeved on the third pin.

[0015] Furthermore, a sealing ring is fixedly fitted onto the outer side of the sealing component, and the sealing ring abuts against the inner ring of the gas transmission pipe.

[0016] Furthermore, the sealing ring is made of an elastic material, which is fluororubber.

[0017] Furthermore, the gas delivery pipe is equipped with a one-way exhaust valve, which can block the cleaning liquid injected into the gas delivery pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by opening the electric push rod, the driving end of the electric push rod can be shortened, causing the sealing part to rotate upward around the limit seat as the axis and perpendicular to the inner ring of the air supply pipe, which can seal the inner ring of the air supply pipe. Then, the solenoid valve is opened, and water is injected into the air supply pipe using a high-pressure water gun, which can wash away the dust adhering to the inner ring of the air supply pipe. Subsequently, the flushed wastewater is discharged through the drain outlet, thus completing the cleaning work. This reduces the resistance encountered by compressed air during transmission in the air supply pipe, thereby saving air source energy consumption.

[0019] Compared with the prior art, the beneficial effects of this utility model are: by setting a sealing ring, the gap between the sealing component and the inner ring of the gas pipeline can be filled, thereby improving its sealing performance. The sealing ring is made of fluororubber, which has strong high temperature resistance, so the sealing ring can be used normally in high temperature environments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the overall external structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the internal half-section of the gas transmission pipe of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the sealing component of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the external side of this utility model.

[0024] In the diagram: 1. Gas source controller body; 2. Gas supply pipe; 3. Drain outlet; 4. Sealing component; 5. Sealing plug; 6. Fixing component; 7. Electric push rod; 8. Solenoid valve; 9. Mounting base; 10. Fixing base; 11. Limiting seat; 12. Sealing ring; 13. One-way exhaust valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a gas source control mechanism for a valve positioner, including a gas source controller body 1 and a gas supply pipe 2 installed on the gas source controller body 1, and further including...

[0027] Drain outlet 3 is located at the bottom near the end of gas pipe 2;

[0028] The sealing component 4 is rotatably installed on the inner ring of the gas pipeline 2, and a sealing plug 5 is fixedly installed on one side. The sealing plug 5 is slidably inserted into the drain outlet 3 to seal the drain outlet 3.

[0029] The fixing component 6 is fixedly installed on the inner ring of the gas pipeline 2, and an electric push rod 7 is rotatably provided between it and the sealing component 4 to drive the sealing component 4 to move.

[0030] Solenoid valve 8 is located at the top of the gas pipeline 2 away from the end of the sealing component 4, and is used to inject cleaning fluid into the gas pipeline 2 for flushing;

[0031] A mounting base 9 is provided on one side of the fixing component 6, and a fixing base 10 is provided on one side of the sealing component 4. The two ends of the electric push rod 7 are respectively rotatably disposed in the mounting base 9 and the fixing base 10. A first pin is provided in the mounting base 9, and a second pin is provided in the fixing base 10. The two ends of the electric push rod 7 are respectively rotatably sleeved on the first pin and the second pin. A limit seat 11 is provided in the inner ring of the gas pipeline 2. The sealing component 4 is rotatably disposed in the limit seat 11. A third pin is provided in the limit seat 11, and the sealing component 4 is rotatably sleeved on the third pin.

[0032] In practice, when a large amount of dust adheres to the inner wall of the air supply pipe 2, firstly, the electric push rod 7 is turned on, causing the drive end of the electric push rod 7 to shorten and drive the sealing part 4 to rotate upward around the limit seat 11 as the axis until the sealing part 4 is perpendicular to the inner ring of the air supply pipe 2, which can seal the inner ring of the air supply pipe 2. Then, the solenoid valve 8 is turned on, and water is injected into the air supply pipe 2 using a high-pressure water gun to flush away the dust adhering to the inner ring of the air supply pipe 2. Subsequently, the flushed wastewater is discharged through the drain outlet 3, which completes the cleaning work. This reduces the resistance encountered by compressed air during transmission in the air supply pipe 2, thereby saving gas energy consumption.

[0033] When it is necessary to use the air supply pipe 2 to transport air, rotate the sealing part 4 downward according to the above principle until the sealing plug 5 is inserted into the drain port 3 to seal the drain port 3. At the same time, the seal of the inner ring of the air supply pipe 2 is released, which can facilitate the transport of compressed air.

[0034] It should be noted that rubber material can be used for the sealing plug 5. Since rubber has a certain elasticity, it can seal the drain port 3, thereby improving the sealing performance of the gas supply pipe 2 when supplying gas.

[0035] See Figure 1-4 The sealing component 4 is fixedly fitted with a sealing ring 12, which abuts against the inner ring of the gas pipeline 2.

[0036] In practice, based on the above implementation, by setting a sealing ring 12, the gap between the sealing component 4 and the inner ring of the gas pipeline 2 can be filled, thereby improving its sealing performance.

[0037] See Figure 1-4 The sealing ring 12 is made of an elastic material, namely fluororubber. By choosing fluororubber as the material for the sealing ring 12, it is possible to use the sealing ring 12 normally in high-temperature environments due to the strong high-temperature resistance of fluororubber.

[0038] See Figure 1-4 A one-way vent valve 13 is installed on the gas supply pipe 2. This valve can block the cleaning fluid injected into the gas supply pipe 2.

[0039] Before use, all electrical appliances involved in the gas supply pipe 2 should be connected to an external power source, and the sealing of the gas supply pipe 2 should be ensured after the external power source is connected. Since connecting electrical appliances to an external power source is existing technology and is not a problem that needs to be solved in the background technology of this manual, it will not be explained in detail in this manual.

[0040] Working principle: When a large amount of dust adheres to the inner wall of the air supply pipe 2, first turn on the electric push rod 7, so that the drive end of the electric push rod 7 shortens and drives the sealing part 4 to rotate upward around the limit seat 11 as the axis until the sealing part 4 is perpendicular to the inner ring of the air supply pipe 2, which can seal the inner ring of the air supply pipe 2. Then turn on the solenoid valve 8 and use a high-pressure water gun to inject water into the air supply pipe 2 to wash away the dust adhering to the inner ring of the air supply pipe 2. Then the wastewater from the wash is discharged through the drain port 3, which completes the cleaning work. This reduces the resistance encountered by compressed air in the transmission process in the air supply pipe 2, thereby saving air source energy consumption.

[0041] When it is necessary to use the air supply pipe 2 to transport air, rotate the sealing part 4 downward according to the above principle until the sealing plug 5 is inserted into the drain port 3 to seal the drain port 3. At the same time, the seal of the inner ring of the air supply pipe 2 is released, which can facilitate the transport of compressed air.

[0042] It should be noted that by setting the sealing ring 12, the gap between the sealing component 4 and the inner ring of the gas pipeline 2 can be filled, thereby improving its sealing performance. The sealing ring 12 is made of fluororubber, which has strong high temperature resistance, so the sealing ring 12 can be used normally in high temperature environments.

Claims

1. A gas source control mechanism for a valve positioner, comprising a gas source controller body (1) and a gas delivery tube (2) mounted on the gas source controller body (1), characterized in that, Also include, Drainage (3), open in the bottom near the end of the gas pipe (2); Plugging (4), rotatingly installed in the inner circle of the gas pipe (2), and one side is fixedly installed with sealing plug (5), the sealing plug (5) is matched with the drainage (3) and is slidably inserted in the drainage (3), for sealing the drainage (3); Fixed part (6), fixedly installed in the inner circle of the gas pipe (2), and the electric push rod (7) is rotatably arranged between the fixed part (6) and the plugging (4), for driving the plugging (4) to move; Solenoid valve (8), provided at the top of the end of the gas pipe (2) away from the plugging (4), for injecting cleaning liquid into the gas pipe (2) for flushing.

2. An air supply control mechanism for a valve positioner as defined in claim 1, wherein: One side of the fixed part (6) is provided with a mounting seat (9), one side of the plugging (4) is provided with a fixed seat (10), and the two ends of the electric push rod (7) are rotatably arranged in the mounting seat (9) and the fixed seat (10) respectively.

3. A gas supply control mechanism for a valve positioner as defined in claim 2, wherein: The first pin shaft is arranged in the mounting seat (9), the second pin shaft is arranged in the fixed seat (10), and the two ends of the electric push rod (7) are rotatably sleeved on the first pin shaft and the second pin shaft respectively.

4. An air supply control mechanism for a valve positioner as defined in claim 1, wherein: The inner circle of the gas pipe (2) is provided with a limiting seat (11), and the plugging (4) is rotatably arranged in the limiting seat (11).

5. A gas supply control mechanism for a valve positioner as defined in claim 4 wherein: The third pin shaft is arranged in the limiting seat (11), and the plugging (4) is rotatably sleeved on the third pin shaft.

6. A gas supply control mechanism for a valve positioner as defined in claim 1, wherein: The plugging (4) is fixedly sleeved with a sealing ring (12), and the sealing ring (12) abuts against the inner circle of the gas pipe (2).

7. A gas supply control mechanism for a valve positioner as defined in claim 6 wherein: The sealing ring (12) is made of elastic material, and the elastic material is fluorine rubber.

8. An air supply control mechanism for a valve positioner as defined in claim 1 wherein: The one-way exhaust valve (13) is arranged on the gas pipe (2), which can block the cleaning liquid injected into the gas pipe (2).

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