A gas volume regulating valve

Abstract

The application discloses a gas quantity adjusting valve and belongs to the technical field of gas quantity adjusting valves. The gas quantity adjusting valve comprises a valve cover, a valve body and a piston, the valve cover and the valve body are connected through bolts, a first cavity is formed in the valve cover, a ventilation cavity and a second cavity that are in communication with each other are formed in the valve body, the second cavity is in communication with the first cavity, a vent hole that is in communication with the first cavity is formed in the side wall of the valve cover, the gas quantity adjusting valve after modification can push the piston to make the jacking rod completely press the gas valve by the calculated spring force when the gas quantity adjusting valve is in an idle state, instrument air pressure is introduced when the gas quantity adjusting valve is loaded, the piston is pushed to move upwards, the valve rod is separated from the gas valve, the gas valve works automatically, the electromagnetic iron assembly cooperates with the elastic compensation block, the spring deformation of the equipment after long-term use cannot press the piston, the jacking rod cannot completely press the gas valve, and the problems can be effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of gas volume regulating valve technology, and more specifically, to a gas volume regulating valve. Background Technology

[0002] A gas volume regulating valve is a pneumatic control valve used by a compressor to drive the pressure fork component of the gas valve. Its main function is to regulate the gas supply of the compressor. In existing technology, the compressor gas volume regulating valve mainly consists of a valve body, valve cover, piston, indicator rod, and push rod. In use, the power gas enters through the instrument air inlet, driving the piston to move downward, thereby driving the push rod to move. When the power gas disappears, the spring and gas pressure drive the piston to return to the initial position.

[0003] When the existing gas volume regulating valve is used under conditions of long-term compressor idling and frequent changes in gas thrust, it is prone to failure to press the valve rod tightly due to fluctuations in instrument air pressure and deformation of the return spring, making it difficult to meet the compressor's operating requirements under idling conditions. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a gas volume regulating valve. This modified valve, when unloaded, relies on a calculated spring force to push the piston, causing the push rod to fully press the valve. When loaded, instrument air pressure is introduced, pushing the piston upwards, thus disengaging the valve rod from the valve and allowing it to operate automatically. Furthermore, through the cooperation of an electromagnet assembly and a spring compensation block, it effectively prevents the spring from deforming and failing to press the piston after prolonged use, thus preventing the push rod from fully pressing the valve.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A gas volume regulating valve includes a valve cover, a valve body, and a piston. The valve cover and the valve body are connected by bolts. The valve cover has a first cavity, and the valve body has a ventilation cavity and a second cavity that are interconnected. The second cavity is connected to the first cavity. The side wall of the valve cover has a vent port that communicates with the first cavity, and the side wall of the valve body has an instrument air inlet that communicates with the ventilation cavity. A piston is installed in the second cavity, and a push rod is fixedly connected to the lower end of the piston. The other end of the push rod is located outside the valve body. The inner end of the valve cover also has a first... The first slide groove has a spring compensation block slidably connected inside it. The piston and the end of the spring compensation block that are close to each other are fixedly connected to a pair of springs. This allows the modified air volume regulating valve to push the piston with the calculated spring force when it is unloaded, so that the push rod can fully press the air valve. When loaded, the instrument air pressure is introduced to push the piston upward, thereby allowing the valve rod to leave the air valve and making the air valve work by itself. Through the cooperation of the electromagnet assembly and the spring compensation block, it can effectively prevent the spring from deforming and failing to press the piston after long-term use, which would result in the push rod not being able to fully press the air valve.

[0009] Furthermore, a placement ring is provided at the inner end of the valve body, located below the piston. A pair of pressure sensors are mounted on the placement ring. The pair of pressure sensors are electrically connected to a first electromagnet assembly and a second electromagnet assembly, respectively. The first electromagnet assembly includes a first electromagnet and a second electromagnet, with the first electromagnet embedded in the piston. A second slide groove communicating with the first slide groove is also provided at the inner end of the valve cover. The second electromagnet is installed in the second slide groove, and its lower end is in contact with the upper surface of the elastic compensation block. The second electromagnet assembly includes a third electromagnet and a fourth electromagnet. The inner end of the valve cover also has a section communicating with the first slide groove. The third slide groove is connected, and both the third and fourth electromagnets are located within it. The third electromagnet is fixed to the inner bottom of the third slide groove, and the fourth electromagnet is slidably connected to the third slide groove. When the spring deforms and fails to compress the piston, a pair of pressure sensors control the first and second electromagnet assemblies to start synchronously. The first and second electromagnets generate a magnetic force that attracts each other, causing the second electromagnet to move downwards, which in turn moves the elastic compensation block downwards to compress the spring. At the same time, the third and fourth electromagnets generate a magnetic force that repels each other, and the fourth electromagnet moves towards the end closer to the elastic compensation block within the third slide groove.

[0010] Furthermore, an annular groove is formed on the side wall of the elastic compensation block, and an elastic compensation ball is filled in the annular groove, with part of the elastic compensation ball located outside the annular groove. The elastic compensation ball is made of rubber and is hollow inside, filled with adhesive. A connecting rod is fixedly connected to the end of the fourth electromagnet away from the third electromagnet, and a pin is fixedly connected to the end of the connecting rod near the elastic compensation block. When the first electromagnet assembly and the second electromagnet assembly are activated simultaneously, the fourth electromagnet drives the connecting rod and the pin to move towards the end near the elastic compensation block until the pin abuts against the side wall of the elastic compensation block. At this time, the elastic compensation block moves downward, and the pin abutting against the side wall of the elastic compensation block punctures the elastic compensation ball, releasing the adhesive inside. The adhesive then connects the side wall of the elastic compensation block to the first sliding groove, fixing the elastic compensation block in its current position and continuously compensating for the lack of elasticity when the spring deforms and cannot press the piston.

[0011] Furthermore, the annular grooves are configured in multiple ways, and the spacing between each pair of annular grooves is consistent. During the downward movement of the elastic compensation block, the elastic compensation balls in the multiple annular grooves are punctured by the ejector pin, which can effectively improve the fixing effect between the elastic compensation block and the inner wall of the ejector pin, making the connection between the two more stable.

[0012] Furthermore, the cross-sectional shape of the elastic compensation block is "T-shaped", and the shape of the first groove matches it, which limits the trajectory of the elastic compensation block moving downward, and can effectively prevent the situation where the ejector pin cannot puncture the elastic compensation ball due to the deviation of the elastic compensation block.

[0013] Furthermore, the connecting rod has multiple ejector pins, the length of which gradually increases from the middle to both ends. The multiple ejector pins are distributed in a fan shape on the connecting rod, and the fan-shaped distribution of ejector pins matches the surface shape of the elastic compensation block, which facilitates the simultaneous puncture of the elastic compensation ball in an annular groove by multiple ejector pins, thereby improving the release efficiency of the adhesive and reducing the time required for the elastic compensation block and ejector pins to be fixed.

[0014] Furthermore, the upper end of the piston is provided with a pair of mounting grooves, and the lower ends of the pair of springs are installed in the mounting grooves, which can limit the movement trajectory of the springs and effectively reduce the possibility of spring deformation.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of this invention are:

[0017] (1) This solution enables the modified gas volume regulating valve to push the piston with the calculated spring force when it is unloaded, so that the push rod can fully press the gas valve. When it is loaded, the instrument air pressure is introduced to push the piston upward, so that the valve rod leaves the gas valve and the gas valve works by itself. Through the cooperation of the electromagnet assembly and the spring compensation block, it can effectively prevent the spring from deforming and failing to press the piston after long-term use, which would result in the push rod not being able to fully press the gas valve.

[0018] (2) A placement ring is provided at the inner end of the valve body, located below the piston. A pair of pressure sensors are installed on the placement ring. The pair of pressure sensors are electrically connected to a first electromagnet assembly and a second electromagnet assembly, respectively. The first electromagnet assembly includes a first electromagnet and a second electromagnet. The first electromagnet is embedded in the piston. A second slide groove is also provided at the inner end of the valve cover, communicating with the first slide groove. The second electromagnet is installed in the second slide groove, and the lower end of the second electromagnet is in contact with the upper surface of the elastic compensation block. The second electromagnet assembly includes a third electromagnet and a fourth electromagnet. A third slide groove is also provided at the inner end of the valve cover, communicating with the first slide groove. The third and fourth electromagnets are both located in the third slide groove. The third electromagnet is fixed to the inner bottom of the third slide groove, and the fourth electromagnet is slidably connected to the third slide groove. When the spring deforms and cannot press the piston, a pair of pressure sensors control the first and second electromagnet assemblies to start synchronously. The first and second electromagnets generate a magnetic force that attracts each other, causing the second electromagnet to move downward, which drives the elastic compensation block to move downward to compress the spring. At the same time, the third and fourth electromagnets generate a magnetic force that repels each other, and the fourth electromagnet moves towards the end closer to the elastic compensation block in the third slide groove.

[0019] (3) An annular groove is opened on the side wall of the elastic compensation block. The annular groove is filled with an elastic compensation ball, and the elastic compensation ball is located outside the annular groove. The elastic compensation ball is made of rubber and is hollow inside. The inside of the elastic compensation ball is filled with adhesive. The end of the fourth electromagnet away from the third electromagnet is fixedly connected to a connecting rod. The end of the connecting rod close to the elastic compensation block is fixedly connected to a pin. When the first electromagnet assembly and the second electromagnet assembly are started synchronously, the fourth electromagnet drives the connecting rod and the pin to move towards the end close to the elastic compensation block until the pin abuts against the side wall of the elastic compensation block. At this time, the elastic compensation block is driven to move downward. The pin abuts against the side wall of the elastic compensation block and punctures the elastic compensation ball, releasing the adhesive inside. The adhesive connects the side wall of the elastic compensation block to the first sliding groove, fixing the elastic compensation block in the current position and continuously compensating for the lack of elastic force when the spring is deformed and cannot press the piston.

[0020] (4) Multiple annular grooves are provided, and the spacing between each pair of annular grooves is consistent. During the downward movement of the elastic compensation block, the elastic compensation balls in the multiple annular grooves are punctured by the ejector pin, which can effectively improve the fixing effect between the elastic compensation block and the inner wall of the ejector pin, making the connection between the two more stable.

[0021] (5) The cross-sectional shape of the elastic compensation block is "T-shaped" and the shape of the first slide groove matches it. This limits the trajectory of the elastic compensation block moving downward, which can effectively prevent the situation where the ejector pin cannot puncture the elastic compensation ball due to the deviation of the elastic compensation block.

[0022] (6) Multiple ejector pins are set on the connecting rod. The length of the multiple ejector pins gradually increases from the middle to both ends. The multiple ejector pins are distributed in a fan shape on the connecting rod. The fan-shaped distribution of ejector pins matches the surface shape of the elastic compensation block, which makes it convenient for multiple ejector pins to puncture the elastic compensation ball in an annular groove at the same time, thereby improving the release efficiency of the adhesive and making the time required for the elastic compensation block and ejector pins to be fixed shorter.

[0023] (7) A pair of mounting slots are provided at the upper end of the piston, and the lower ends of a pair of springs are installed in the mounting slots, which can limit the movement trajectory of the springs and effectively reduce the possibility of spring deformation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the gas volume regulating valve in a compressor in the prior art;

[0025] Figure 2 This is a schematic diagram of the gas volume regulating valve of the compressor in this invention;

[0026] Figure 3 for Figure 2 Enlarged view of point A;

[0027] Figure 4 for Figure 2 Enlarged view of point B;

[0028] Figure 5 for Figure 2 Enlarged view of point C;

[0029] Figure 6 This is a structural schematic diagram of the elastic compensation block.

[0030] Figure 7 This is a schematic diagram of the structure of the fourth electromagnet and the ejector pin.

[0031] Explanation of the labels in the diagram:

[0032] 1 Valve cover, 101 First cavity, 102 First slide groove, 103 Second slide groove, 104 Third slide groove, 2 Valve body, 201 Ventilation cavity, 202 Second cavity, 203 Placement ring, 3 Vent port, 4 Instrument air inlet, 5 Piston, 501 Assembly groove, 6 Spring, 7 Elastic compensation block, 8 Pressure sensor, 901 First electromagnet, 902 Second electromagnet, 1001 Third electromagnet, 1002 Fourth electromagnet, 11 Connecting rod, 12 Ejector pin, 13 Elastic compensation ball. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1:

[0037] Please see Figure 2A gas volume regulating valve includes a valve cover 1, a valve body 2, and a piston 5. The valve cover 1 and the valve body 2 are connected by bolts. A first cavity 101 is provided inside the valve cover 1. A ventilation cavity 201 and a second cavity 202 are provided inside the valve body 2 and are connected to each other. The second cavity 202 is connected to the first cavity 101. An vent 3 connected to the first cavity 101 is provided on the side wall of the valve cover 1. An instrument air inlet 4 connected to the ventilation cavity 201 is provided on the side wall of the valve body 2. The piston 5 is installed in the second cavity 202. A push rod is fixedly connected to the lower end of the piston 5 and the other end of the push rod is located outside the valve body 2. A first sliding groove 102 is also provided inside the valve cover 1. An elastic compensation block 7 is slidably connected in the first sliding groove 102. A pair of springs 6 are fixedly connected to the piston 5 and the elastic compensation block 7 at their respective close ends.

[0038] Please see Figure 2-7 The valve body 2 has a placement ring 203 located below the piston 5 at its inner end. A pair of pressure sensors 8 are mounted on the placement ring 203. The pair of pressure sensors 8 are electrically connected to a first electromagnet assembly and a second electromagnet assembly, respectively. The first electromagnet assembly includes a first electromagnet 901 and a second electromagnet 902. The first electromagnet 901 is embedded in the piston 5. The valve cover 1 also has a second slide groove 103 connected to the first slide groove 102 at its inner end. The second electromagnet 902 is installed in the second slide groove 103, and its lower end is in contact with the upper surface of the elastic compensation block 7. The second electromagnet assembly includes a third electromagnet 1001 and a fourth electromagnet 1002. The valve cover 1 also has a third slide groove 104 connected to the first slide groove 102. Electromagnet 1001 and the fourth electromagnet 1002 are both located in the third slide groove 104. The third electromagnet 1001 is fixed to the inner bottom end of the third slide groove 104, and the fourth electromagnet 1002 is slidably connected to the third slide groove 104. When the spring 6 deforms and cannot press the piston 5, a pair of pressure sensors 8 control the first electromagnet assembly and the second electromagnet assembly to start synchronously. The first electromagnet 901 and the second electromagnet 902 generate a magnetic force that attracts each other, and the second electromagnet 902 moves downward, driving the elastic compensation block 7 to move downward to squeeze the spring 6. At the same time, the third electromagnet 1001 and the fourth electromagnet 1002 generate a magnetic force that repels each other, and the fourth electromagnet 1002 moves towards the end closer to the elastic compensation block 7 in the third slide groove 104.

[0039] Please see Figure 3-7An annular groove is formed on the side wall of the elastic compensation block 7, and an elastic compensation ball 13 is filled in the annular groove. The elastic compensation ball 13 is partially located outside the annular groove. The elastic compensation ball 13 is made of rubber and is hollow inside. The interior of the elastic compensation ball 13 is filled with adhesive. A connecting rod 11 is fixedly connected to the end of the fourth electromagnet 1002 away from the third electromagnet 1001. A pin 12 is fixedly connected to the end of the connecting rod 11 near the elastic compensation block 7. When the first electromagnet assembly and the second electromagnet assembly are started synchronously, the fourth electromagnet 1002... The connecting rod 11 and the ejector pin 12 are moved towards the end of the elastic compensation block 7 until the ejector pin 12 abuts against the side wall of the elastic compensation block 7. At this time, 92 drives the elastic compensation block 7 to move downward. The ejector pin 12, which abuts against the side wall of the elastic compensation block 7, punctures the elastic compensation ball 13, releasing the adhesive inside. The adhesive then connects the side wall of the elastic compensation block 7 to the first slide groove 102, fixing the elastic compensation block 7 in the current position and continuously compensating for the lack of elasticity when the spring 6 is deformed and cannot press the piston 5.

[0040] Please see Figure 6-7 Multiple annular grooves are provided, and the spacing between each pair of annular grooves is consistent. During the downward movement of the elastic compensation block 7 driven by 92, the elastic compensation ball 13 in the multiple annular grooves is punctured by the ejector pin 12, which can effectively improve the fixing effect between the elastic compensation block 7 and the inner wall of the ejector pin 12, making the connection between the two more stable.

[0041] Please see Figure 5-6 The cross-sectional shape of the elastic compensation block 7 is "T-shaped", and the shape of the first groove 102 matches it. It limits the trajectory of the elastic compensation block 7 moving downwards driven by 92, which can effectively prevent the situation where the ejector pin 12 cannot puncture the elastic compensation ball 13 due to the deviation of the elastic compensation block 7.

[0042] Please see Figure 7 Multiple ejector pins 12 are provided on the connecting rod 11. The length of the multiple ejector pins 12 gradually increases from the middle to both ends. The multiple ejector pins 12 are distributed in a fan shape on the connecting rod 11. The fan-shaped distribution of ejector pins 12 matches the surface shape of the elastic compensation block 7, which makes it convenient for multiple ejector pins 12 to be punctured by the elastic compensation ball 13 in an annular groove at the same time, thereby improving the release efficiency of the adhesive and making the time required for the elastic compensation block 7 and the ejector pins 12 to be fixed shorter.

[0043] Please see Figure 3 The upper end of the piston 5 is provided with a pair of mounting grooves 501, and the lower ends of the pair of springs 6 are installed in the mounting grooves 501, which can limit the movement trajectory of the springs 6 and effectively reduce the possibility of deformation of the springs 6.

[0044] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A gas volume regulating valve, comprising a valve cover (1), a valve body (2), and a piston (5), characterized in that: The valve cover (1) and valve body (2) are connected by bolts. The valve cover (1) has a first cavity (101) inside, and the valve body (2) has a ventilation cavity (201) and a second cavity (202) that are interconnected. The second cavity (202) is connected to the first cavity (101). The valve cover (1) has a vent (3) on its side wall that is connected to the first cavity (101), and the valve body (2) has a vent (3) on its side wall that is connected to the ventilation cavity (201). 01) Connected instrument air inlet (4), a piston (5) is installed in the second cavity (202), the lower end of the piston (5) is fixedly connected to a push rod, and the other end of the push rod is located outside the valve body (2). The inner end of the valve cover (1) is also provided with a first slide groove (102), and an elastic compensation block (7) is slidably connected in the first slide groove (102). A pair of springs (6) are fixedly connected to the piston (5) and the elastic compensation block (7) at their respective close ends. The valve body (2) has a placement ring (203) located on the lower side of the piston (5) at its inner end. A pair of pressure sensors (8) are installed on the placement ring (203). The pair of pressure sensors (8) are electrically connected to a first electromagnet assembly and a second electromagnet assembly, respectively. The first electromagnet assembly includes a first electromagnet (901) and a second electromagnet (902). The first electromagnet (901) is embedded in the piston (5). The valve cover (1) also has a second slide groove (103) connected to the first slide groove (102) at its inner end. The second electromagnet (902) is installed in the second slide groove (103), and the lower end of the second electromagnet (902) is in contact with the upper surface of the elastic compensation block (7). The second electromagnet assembly includes a third electromagnet (1001) and a fourth electromagnet (1002). The inner end of the valve cover (1) is also provided with a third slide groove (104) that communicates with the first slide groove (102). The third electromagnet (1001) and the fourth electromagnet (1002) are both located in the third slide groove (104). The third electromagnet (1001) is fixed to the inner bottom end of the third slide groove (104), and the fourth electromagnet (1002) is slidably connected to the third slide groove (104). An annular groove is formed on the side wall of the elastic compensation block (7), and the annular groove is filled with an elastic compensation ball (13). The elastic compensation ball (13) is partially located outside the annular groove. A connecting rod (11) is fixedly connected to the end of the fourth electromagnet (1002) away from the third electromagnet (1001). A pin (12) is fixedly connected to the end of the connecting rod (11) near the elastic compensation block (7).

2. The gas volume regulating valve according to claim 1, characterized in that: The annular grooves are configured as multiple, and the spacing between each pair of annular grooves is consistent.

3. The gas volume regulating valve according to claim 1, characterized in that: The cross-sectional shape of the elastic compensation block (7) is "T-shaped", and the shape of the first groove (102) matches it.

4. The gas volume regulating valve according to claim 1, characterized in that: The elastic compensating ball (13) is made of rubber and is hollow inside, and the interior of the elastic compensating ball (13) is filled with adhesive.

5. The gas volume regulating valve according to claim 1, characterized in that: The connecting rod (11) has multiple ejector pins (12), the length of which gradually increases from the middle to both ends, and the multiple ejector pins (12) are distributed in a fan shape on the connecting rod (11).

6. The gas volume regulating valve according to claim 1, characterized in that: The upper end of the piston (5) is provided with a pair of mounting grooves (501), and the lower ends of the pair of springs (6) are installed in the mounting grooves (501).

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