Novel pneumatic pedal pressure regulating valve

Abstract

The utility model relates to the field of pressure regulating valves, and discloses a novel pneumatic pedal pressure regulating valve which comprises a valve body, a shell is fixedly installed on the rear side of the valve body through a second bolt, a connecting plate is fixedly installed on the lower portion of the valve body through a first bolt, a piston is arranged on the inner wall of the front side of the valve body, and an air channel is formed in the inner wall of the valve body and the inner wall of the connecting plate. A pressure regulating mechanism is arranged on the inner wall of the valve body and comprises a pressure regulating assembly and a power assembly, and the pressure regulating assembly comprises a top sleeve which slides on the inner wall of the valve body. According to the pneumatic pedal pressure regulating valve, the hard sealing technology is adopted, sensitive pressure regulating response is guaranteed, stable pressure of a pneumatic system can be effectively guaranteed, long-term reliable work of the pneumatic pedal pressure regulating valve is guaranteed, meanwhile, the maintenance efficiency of the pneumatic pedal pressure regulating valve can be improved by replacing parts on the basis of the pneumatic pedal pressure regulating valve, and the service life of the pneumatic pedal pressure regulating valve is prolonged. And the procurement cost and the operation cost of an enterprise are reduced.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulating valves, and in particular to a novel pneumatic foot-operated pressure regulating valve. Background Technology

[0002] Pneumatic foot-operated pressure regulating valves are mainly used to control the pressure of pneumatic systems in workover rigs and drilling rigs. They can also be used in other pneumatic control systems and can operate indoors and outdoors.

[0003] The pneumatic foot-operated pressure regulating valves used in the pneumatic control systems of existing workover rigs and drilling rigs are all imported, resulting in excessively long delivery cycles. Often, there is a long waiting period from order placement to product delivery. When a problem occurs with the pneumatic foot-operated pressure regulating valve, the entire valve needs to be replaced, increasing operating costs. Furthermore, the existing pneumatic foot-operated pressure regulating valves use rubber components to open and close the valve's central channel, which leads to aging and a limited lifespan after prolonged use. Therefore, a new type of pneumatic foot-operated pressure regulating valve is proposed to solve these problems. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a novel pneumatic foot pedal pressure regulating valve, which aims to improve the problems in the prior art that "when the pneumatic foot pedal pressure regulating valve has a problem, the whole thing needs to be replaced, which increases the cost of use; and the use of rubber parts to control the opening and closing of the channel in the pressure regulating valve will lead to equipment aging and limited service life after long-term use".

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a novel pneumatic foot-operated pressure regulating valve, comprising a valve body, a housing fixedly installed on the rear side of the valve body by bolt two, a connecting plate fixedly installed on the lower part of the valve body by bolt one, a piston provided on the inner wall of the front side of the valve body, an air passage opened on the inner wall of the valve body and the connecting plate, a pressure regulating mechanism provided on the inner wall of the valve body, the pressure regulating mechanism comprising a pressure regulating component and a power component, the pressure regulating component comprising a top sleeve, the top sleeve sliding on the inner wall of the valve body, an O-ring two provided on the outer side of the top sleeve, a sealing seat threadedly connected to the inner wall of the front side of the top sleeve, a spring one provided on the inner wall of the top sleeve, a lower sealing ball provided on the front side of the spring one, a connecting rod inserted into the inner wall of the lower sealing ball, an upper sealing ball fixedly connected to the front side of the connecting rod, an air outlet opened on the outer side of the front part of the sealing seat, an air inlet opened on the rear part of the sealing seat, and the piston and the sealing seat elastically connected by spring two.

[0006] As a further description of the above technical solution:

[0007] The power assembly includes a drive shaft rotatably connected to the inner wall of the housing. A pedal is fixedly connected to the outer side of the drive shaft. A drive rod is vertically threaded to the inner wall of the drive shaft. A slide rod is provided on the inner wall of the housing. A top rod is provided on the front side of the slide rod. The lower part of the drive rod slides on the upper part of the slide rod. The front side of the top rod is inserted into the inner wall of the rear side of the top sleeve. A second set screw is provided through the outer side of the pedal. A nut is threaded to the outer side of the second set screw.

[0008] As a further description of the above technical solution:

[0009] Two sets of O-rings are provided. The other set of O-rings is located on the outside of the sealing seat, and the O-rings are attached to the inner wall of the valve body.

[0010] As a further description of the above technical solution:

[0011] A pressure control assembly is provided on the front side of the valve body. The pressure control assembly includes an adjusting screw plug, which is threadedly connected to the inner wall of the valve body. A filter screen is fixedly connected to the inner side of the adjusting screw plug. A spring is provided on the inner side of the adjusting screw plug. An O-ring is provided on the outer side of the piston, and the O-ring is fitted to the inner wall of the valve body.

[0012] As a further description of the above technical solution:

[0013] The rear part of the sealing seat and the front part of the top sleeve are hollow, and the connecting rod slides on the inner wall of the front side of the sealing seat.

[0014] As a further description of the above technical solution:

[0015] The lower sealing ball is attached to the inner wall of the rear part of the sealing seat, and the upper sealing ball is attached to the rear side of the piston.

[0016] As a further description of the above technical solution:

[0017] The adjusting plug is fixedly installed inside the valve body by a set screw.

[0018] As a further description of the above technical solution:

[0019] A sealing ring is provided at the connection between the lower part of the valve body and the connecting plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the pneumatic foot pedal pressure regulating valve adopts hard sealing technology to ensure sensitive pressure regulation response, effectively ensuring stable pressure in the pneumatic system and long-term reliable operation of the pneumatic foot pedal pressure regulating valve. At the same time, by replacing parts, the maintenance efficiency of the pneumatic foot pedal pressure regulating valve can be improved, and the procurement and operating costs of enterprises can be reduced.

[0022] 2. In this utility model, the pneumatic foot pedal pressure regulating valve is guaranteed to work normally in a low-temperature working environment of -40℃ by adopting low-temperature sealing technology, and the pneumatic foot pedal pressure regulating valve is guaranteed to work reliably in low-temperature environments. By adopting piston pressure control, the pneumatic foot pedal pressure regulating valve is guaranteed to have a long service life and high reliability. Attached Figure Description

[0023] Figure 1 This is a right-side three-dimensional cross-sectional view of the overall device in this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged 3D structural diagram at point A;

[0025] Figure 3 This is a top-view three-dimensional structural diagram of the overall device in this utility model;

[0026] Figure 4 This is a front view schematic diagram of the three-dimensional structure of the overall device in this utility model.

[0027] Legend:

[0028] 1. Valve body; 2. Outer shell; 3. Connecting plate; 4. Air passage; 51. Top sleeve; 52. Spring 1; 53. Lower sealing ball; 54. Connecting rod; 55. Upper sealing ball; 56. Sealing seat; 57. Spring 2; 58. Air outlet; 59. Air inlet; 6. Piston; 7. O-ring 2; 81. Push rod; 82. Slide rod; 83. Drive shaft; 84. Pedal; 85. Drive rod; 91. Adjusting plug; 92. Filter screen; 93. Spring 3; 94. O-ring 1; 10. Set screw 1; 11. Sealing ring; 12. Bolt 1; 13. Bolt 2; 14. Nut; 15. Set screw 2. Detailed Implementation

[0029] 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.

[0030] Reference Figure 1 - Figure 3This utility model provides an embodiment of a novel pneumatic foot-operated pressure regulating valve, comprising a valve body 1, which serves as the main structure of the entire pressure regulating valve, providing an installation foundation and accommodating space for various internal components. A housing 2 is fixedly mounted to the rear side of the valve body 1 by bolt 2 13, providing installation space for the power assembly. A gasket is provided at the contact point between bolt 2 13 and housing 2. A connecting plate 3 is fixedly mounted to the lower part of the valve body 1 by bolt 1 12, forming a complete structural system with the valve body 1. This system is used to connect to other external equipment or pipelines to achieve gas input and output. Furthermore, the connecting plate 3, in conjunction with the valve body 1, ensures the installation stability of the entire pressure regulating valve. A piston 6 is provided on the inner wall of the front side of the valve body 1, which closely cooperates with the pressure regulating mechanism. Under the elastic force of spring 3 93, the piston 6 can move back and forth, interacting with the upper sealing ball. The fit and separation of 55 controls the flow and pressure of gas. The O-ring 94 on its outer side ensures the sealing performance between the piston 6 and the inner wall of the valve body 1, preventing gas leakage and thus ensuring the pressure control accuracy and working stability of the pressure regulating valve. The valve body 1 and the inner wall of the connecting plate 3 have air passages 4, with two sets. The left side is the air outlet and the right side is the air inlet. The inner wall of the valve body 1 is equipped with a pressure regulating mechanism, which includes a pressure regulating component and a power component. The regulating component includes a top sleeve 51, which provides installation space for the spring 52 and the lower sealing ball 53. The top sleeve 51 slides on the inner wall of the valve body 1. The outer side of the top sleeve 51 is equipped with an O-ring 7, which can operate normally in low temperature environments. The inner wall of the front side of the top sleeve 51 is threaded with a sealing seat 56. The sealing seat 56 works with the top sleeve 51 and is driven forward by the power component.

[0031] Furthermore, a spring 52 is provided on the inner wall of the top sleeve 51, which fits against the front side of the lower sealing ball 53, providing elastic force to the lower sealing ball 53. The lower sealing ball 53 is located in front of the spring 52, and the elastic force provided by the lower sealing ball 53 causes it to fit against the inner wall of the sealing seat 56, thus providing a hard seal to the inside of the sealing seat 56. A connecting rod 54 is inserted into the inner wall of the lower sealing ball 53, which is used to connect the lower sealing ball 53 and the upper sealing ball 55 to realize the transmission of force. The upper sealing ball 55 is fixedly connected to the front side of the connecting rod 54, which is used to seal the air hole on the piston 6. At the same time, when the sealing seat 56 moves forward, it can make... The lower sealing ball 53 compresses the first spring 52, connecting the air outlet 58 on the front side of the sealing seat 56 with the air inlet 59 on the rear side, allowing airflow to exit from the air passage 4 on the left. The upper sealing ball 55 and the lower sealing ball 53 are made of metal with smooth surfaces, which increases service life and ensures sensitive pressure regulation response. The sealing seat 56 has an air outlet 58 on the outer front side and an air inlet 59 on the rear side, which connects to the air passage 4 on the right. The piston 6 and the sealing seat 56 are elastically connected by the second spring 57, and the elastic force of the second spring 57 provides a reset capability for the sealing seat 56 and the top sleeve 51.

[0032] Reference Figure 1 and Figure 3 The power assembly includes a drive shaft 83, which provides support and a pivot for the rotation of the pedal 84, allowing the pedal 84 to rotate around it. This converts the operator's foot pressure into rotational force, which is then transmitted to the drive rod 85. The drive shaft 83 is rotatably connected to the inner wall of the housing 2, and the pedal 84 is fixedly connected to the outer side of the drive shaft 83. The operator applies external force by stepping on the pedal 84, which converts this force into rotational force and transmits it to the drive rod 85. The pedal 84 is vertically threaded to the inner wall of the drive shaft 83, and the drive rod 85 is vertically threaded to the inner wall of the drive shaft 83. A slide rod 82 is provided on the inner wall of the housing 2. When the pedal 84 rotates, the drive rod 85 slides on the inner wall of the tapered groove on the upper side of the slide rod 82, converting the rotational motion of the pedal 84 into linear motion, driving the slide rod 82 forward, thereby propelling the pedal 84. The push rod 81 moves forward to control the top sleeve 51. The push rod 81 is provided on the front side of the slide rod 82 to connect the slide rod 82 and the top sleeve 51. The lower part of the drive rod 85 slides on the upper part of the slide rod 82. The front side of the push rod 81 is inserted into the inner wall of the rear side of the top sleeve 51. A set screw 15 is provided through the outer side of the pedal 84. A nut 14 is threaded on the outer side of the set screw 15. The contact distance with the outer shell 2 can be controlled by the extension and retraction length of the set screw 15, thereby limiting the rotation angle of the pedal 84. Two sets of O-rings 7 are provided. The other set of O-rings 7 is provided on the outer side of the sealing seat 56. The O-rings 7 fit against the inner wall of the valve body 1 to enhance the sealing performance, prevent gas leakage in the gaps between components, and ensure the stability of the gas pressure inside the pressure regulating valve.

[0033] Reference Figure 1 , Figure 3 and Figure 4A pressure control assembly is provided on the front side of the valve body 1. The pressure control assembly includes an adjusting screw 91. By rotating the adjusting screw 91, its position within the valve body 1 can be adjusted, thereby changing the pre-pressure of the spring 93 on the piston 6, thus adjusting the pressure control range and accuracy of the pressure regulating valve. An air hole is provided on the front side. The adjusting screw 91 is threadedly connected to the inner wall of the valve body 1. A filter screen 92 is fixedly connected to the inner side of the adjusting screw 91 to filter impurities in the gas, preventing dust, particles, and other impurities from entering the pressure regulating valve. This avoids wear and damage to components such as the piston 6 and the sealing ball caused by impurities, ensuring the cleanliness and normal operation of the internal components of the pressure regulating valve, and extending the service life of the pressure regulating valve. A spring 93 is provided on the inner side of the adjusting screw 91 to provide pre-pressure to the piston 6 and control the position and movement of the piston 6. This allows for the regulation of gas pressure. An O-ring 94 is provided on the outside of the piston 6 to ensure the sealing performance between the piston 6 and the inner wall of the valve body 1, preventing gas leakage from the gap between the piston 6 and the valve body 1, ensuring the pressure control accuracy and stability of the pressure regulating valve, and enabling normal operation in low-temperature environments. The O-ring 94 is fitted to the inner wall of the valve body 1. The rear part of the sealing seat 56 and the front part of the top sleeve 51 are hollow. The connecting rod 54 slides on the inner wall of the front side of the sealing seat 56. The lower sealing ball 53 is fitted to the inner wall of the rear part of the sealing seat 56, and the upper sealing ball 55 is fitted to the rear side of the piston 6. The adjusting screw plug 91 is fixedly installed on the inner side of the valve body 1 by the set screw 10 to improve the stability of the adjusting screw plug 91. A sealing ring 11 is provided at the connection between the lower part of the valve body 1 and the connecting plate 3 to improve the airtightness of the device.

[0034] Working principle: When the operator steps on the pedal 84, the pedal 84 rotates around the drive shaft 83. Since the pedal 84 is vertically threaded to the inner wall of the drive shaft 83, the rotation of the pedal 84 causes the drive rod 85 to slide on the upper part of the slide rod 82, and converts the rotational force into linear motion, which drives the slide rod 82 to move forward, thereby pushing the push rod 81 to move forward. The push rod 81 pushes the top sleeve 51 to slide forward on the inner wall of the valve body 1, and the top sleeve 51 drives the sealing seat 56 to move forward as well.

[0035] As the sealing seat 56 moves forward, the spring 52 is squeezed by the lower sealing ball 53, creating a gap between the lower sealing ball 53 and the inner wall of the sealing seat 56. This allows the air outlet 58 on the front side of the sealing seat 56 to connect with the air inlet 59 on the rear side, enabling gas to flow from the air inlet 4 on the right side through the air inlet 59 and the air outlet 58 of the sealing seat 56 to the air outlet 4 on the left side, thus achieving gas output. At this time, the pressure regulating valve opens, and the gas begins to flow.

[0036] When the operator releases pedal 84, the elastic force of spring 2 57 provides a reset capability for sealing seat 56 and top sleeve 51, causing them to return to their initial positions. Lower sealing ball 53 then closes the passage between air inlet 59 and air outlet 58 again, the pressure regulating valve closes, and gas output stops.

[0037] By loosening the set screw 10 and rotating the adjusting plug 91, the pressure on the spring 3 93 is adjusted, thereby providing pressure to the piston 6, ensuring a long service life and high reliability of the pneumatic foot pedal pressure regulating valve.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel pneumatic foot-operated pressure regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly mounted with a housing (2) on the rear side by bolt two (13). The valve body (1) is fixedly mounted with a connecting plate (3) on the lower part by bolt one (12). A piston (6) is provided on the inner wall of the front side of the valve body (1). An air passage (4) is opened on the inner wall of the valve body (1) and the connecting plate (3). A pressure regulating mechanism is provided on the inner wall of the valve body (1). The pressure regulating mechanism includes a pressure regulating component and a power component. The pressure regulating component includes a top sleeve (51). The top sleeve (51) slides on the inner wall of the valve body (1). An O-ring two (7) is provided on the outer side of the top sleeve (51). The top sleeve (51) is threaded with a sealing seat (56) on the inner wall of the front side. A spring (52) is provided on the inner wall of the top sleeve (51). A lower sealing ball (53) is provided on the front side of the spring (52). A connecting rod (54) is inserted into the inner wall of the lower sealing ball (53). An upper sealing ball (55) is fixedly connected to the front side of the connecting rod (54). An air outlet (58) is provided on the outer side of the front part of the sealing seat (56). An air inlet (59) is provided on the rear part of the sealing seat (56). The piston (6) and the sealing seat (56) are elastically connected by a spring (57).

2. The novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: The power assembly includes a drive shaft (83), which is rotatably connected to the inner wall of the housing (2). A pedal (84) is fixedly connected to the outer side of the drive shaft (83). A drive rod (85) is vertically threaded to the inner wall of the drive shaft (83) and the pedal (84). A slide rod (82) is provided on the inner wall of the housing (2). A top rod (81) is provided on the front side of the slide rod (82). The lower part of the drive rod (85) slides on the upper part of the slide rod (82). The front side of the top rod (81) is inserted into the inner wall of the rear side of the top sleeve (51). A set screw (15) is provided through the outer side of the pedal (84). A nut (14) is threaded to the outer side of the set screw (15).

3. The novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: Two sets of O-rings (7) are provided. The other set of O-rings (7) is provided on the outside of the sealing seat (56), and the O-rings (7) are attached to the inner wall of the valve body (1).

4. A novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: A pressure control assembly is provided on the front side of the valve body (1). The pressure control assembly includes an adjusting screw plug (91), which is threaded to the inner wall of the valve body (1). A filter screen (92) is fixedly connected to the inner side of the adjusting screw plug (91). A spring three (93) is provided on the inner side of the adjusting screw plug (91). An O-ring one (94) is provided on the outer side of the piston (6). The O-ring one (94) is attached to the inner wall of the valve body (1).

5. A novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: The rear part of the sealing seat (56) and the front part of the top sleeve (51) are hollow, and the connecting rod (54) slides on the inner wall of the front side of the sealing seat (56).

6. A novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: The lower sealing ball (53) is attached to the inner wall of the rear part of the sealing seat (56), and the upper sealing ball (55) is attached to the rear side of the piston (6).

7. A novel pneumatic foot-operated pressure regulating valve according to claim 4, characterized in that: The adjusting plug (91) is fixedly installed inside the valve body (1) by a set screw (10).

8. A novel pneumatic foot-operated pressure regulating valve according to claim 1, characterized in that: A sealing ring (11) is provided at the connection between the lower part of the valve body (1) and the connecting plate (3).

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