Pedal type pneumatic control valve

Abstract

The utility model discloses a pedal type pneumatic control valve which comprises a pneumatic control valve body, a pedal type pneumatic valve main body and a pipeline, and one end of the pipeline is connected with an air cylinder on the pneumatic control valve body. The pedal type pneumatic valve body is connected to the other end of the pipeline, and the pedal type pneumatic valve body is treaded to control on-off of internal airflow of an air cylinder on the pneumatic control valve body. By means of the arrangement mode that the supporting mechanism and the limiting mechanism are matched, when a user steps on the pedal, the fixed-axis rotation of the pedal can push the supporting mechanism to move, sliding of the bottom of the supporting mechanism can be blocked through the limiting mechanism, the pedal is prevented from continuing to rotate, and the pedal is prevented from rotating continuously. According to the pneumatic control valve, the rotating angle of the pedal which can be treaded is limited, output of pneumatic signals is more stable, and therefore flow fluctuation is reduced, and the stability of operation of an air cylinder on the pneumatic control valve body is higher.

Description

Technical Field

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

[0002] The operation of a pneumatic control valve in conjunction with a foot-operated pneumatic valve generally includes the following steps: 1. Preparation: Ensure the air supply system is functioning normally and the foot-operated pneumatic valve is in the closed position; 2. Foot operation: Gently press the foot pedal of the foot-operated pneumatic valve. The pneumatic signal will be triggered, causing the high-flow pneumatic control valve to open and the medium to begin flowing. Release the foot pedal, the pneumatic signal will disappear, and the high-flow pneumatic control valve will gradually close; 3. Flow regulation: By controlling the pressure and duration of the foot pedal press, the opening degree of the high-flow pneumatic control valve can be adjusted, thereby achieving precise control of the medium flow rate. The greater the pressure applied and the longer the opening time, the greater the flow rate; conversely, the smaller the flow rate; 4. Stop operation: When it is necessary to stop the flow of the medium, completely release the foot pedal of the foot-operated pneumatic valve. The high-flow pneumatic control valve will close, and the medium flow will stop.

[0003] Existing foot-operated pneumatic control valves typically consist of a foot pedal, a pneumatic pilot valve, and a high-flow-rate pneumatic control valve. The operator triggers a pneumatic signal by pressing the foot pedal, which in turn controls the opening of the main valve, thereby regulating the flow rate of the medium.

[0004] However, since the travel and force of the foot pedal depend entirely on the operator's foot control, different operators' pedaling habits or fatigue levels may cause flow fluctuations, affecting process stability. Traditional foot valves typically use a spring-return structure for the pedal, but lack mechanical limits on the pedal rotation angle, making it difficult to precisely control the flow regulation range, especially in applications requiring constant flow. During prolonged operation, operator fatigue or distraction may lead to uneven pedaling force, further affecting the stable delivery of the medium. Utility Model Content

[0005] The purpose of this invention is to provide a foot-operated pneumatic regulating valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foot-operated pneumatic regulating valve, comprising:

[0007] Pneumatic control valve body;

[0008] A pipe, one end of which is connected to a cylinder on the pneumatic regulating valve body;

[0009] The foot-operated pneumatic valve body is connected to the other end of the pipeline. By stepping on the foot-operated pneumatic valve body, the flow of air inside the cylinder on the pneumatic regulating valve body can be controlled.

[0010] Preferably, the foot-operated pneumatic valve body includes:

[0011] The valve body has a valve core inside, which slides within the valve body and changes the air passage opening or flow rate by displacement.

[0012] A foot pedal, one end of which is hinged to the valve body;

[0013] A support mechanism, wherein the support mechanism is respectively connected to both sides of the bottom of the foot pedal;

[0014] A limiting mechanism is inserted and installed at the bottom of the valve body, and the limiting mechanism is positioned corresponding to the support mechanism.

[0015] Preferably, the support mechanism includes:

[0016] A support arm, one end of which is rotatably connected to a pivot, the pivot being fixedly mounted on the foot pedal;

[0017] The counterweight foot is fixedly connected to the other end of the support arm.

[0018] Preferably, the limiting mechanism includes:

[0019] The first limiting frame is slidably inserted into the bottom of the valve body;

[0020] The mounting base is connected to the bottom of the first limiting frame, and the mounting base has an internal cavity.

[0021] The elastic positioning components are symmetrically interspersed on both sides of the mounting base.

[0022] Preferably, the elastic positioning component includes:

[0023] The pressing plate is slidably inserted into the bottom of the mounting base;

[0024] An insert positioning cylinder is installed on the top of the pressing plate, and the insert positioning cylinder is slidably inserted into the mounting base;

[0025] A spring is connected to the side of the pressing plate away from the insertion positioning cylinder, and the spring is used to provide elastic support for the pressing plate.

[0026] Preferably, the bottom of the valve body is provided with multiple mounting grooves, the limiting mechanism is slidably inserted into the inner cavity of the mounting groove, and positioning holes are provided on both sides of the inner wall of the mounting groove, and the inserted positioning cylinder cooperates with the inner cavity of the positioning hole.

[0027] Preferably, the foot-operated pneumatic valve body further includes:

[0028] A rotating bracket, which is rotatably mounted on the middle of the foot pedal;

[0029] The second limiting bracket is fixedly installed at the bottom of the valve body, and the position of the second limiting bracket corresponds to that of the rotating bracket.

[0030] The technical effects and advantages of this utility model are as follows:

[0031] This utility model utilizes a combination of a support mechanism and a limiting mechanism. When a user steps on the foot pedal, the fixed-axis rotation of the foot pedal will drive the support mechanism to move. The limiting mechanism will block the sliding at the bottom of the support mechanism to prevent the foot pedal from continuing to rotate. This limits the rotation angle of the foot pedal, making the output of the pneumatic signal more stable, thereby reducing flow fluctuations and making the operation of the cylinder on the pneumatic regulating valve body more stable. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the structure of the foot valve body of this utility model.

[0034] Figure 3 This is a side view of the support mechanism of this utility model.

[0035] Figure 4 This is a schematic diagram of the internal structure of the limiting mechanism of this utility model.

[0036] Figure 5 This is a schematic diagram of the structure of the elastic positioning component of this utility model.

[0037] Figure 6 This is a schematic diagram of the internal structure of the rotating bracket of this utility model.

[0038] In the diagram: 1. Pneumatic regulating valve body; 2. Pipeline; 3. Foot-operated pneumatic valve body; 31. Valve body; 311. Mounting groove; 32. Foot pedal; 33. Support mechanism; 331. Support arm; 332. Counterweight foot column; 34. Limiting mechanism; 341. First limiting frame; 342. Mounting seat; 343. Elastic positioning component; 3431. Press plate; 3432. Inserted positioning cylinder; 3433. Spring; 35. Rotating bracket; 36. Second limiting frame. Detailed Implementation

[0039] 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.

[0040] This utility model provides, for example Figure 1-6 The illustrated foot-operated pneumatic control valve includes: a pneumatic control valve body 1; a pipe 2, one end of which is connected to a cylinder on the pneumatic control valve body 1; and a foot-operated pneumatic valve body 3, which is connected to the other end of the pipe 2. By stepping on the foot-operated pneumatic valve body 3, the flow of air inside the cylinder on the pneumatic control valve body 1 can be controlled.

[0041] The foot-operated pneumatic valve body 3 includes: a valve body 31, with a valve core inside the valve body 31 that slides within the valve body 31, changing the air passage opening or flow rate through displacement; a foot pedal 32, one end of which is hinged to the valve body 31, with a first torsion spring at the hinge point for facilitating the return support of the foot pedal 32; a support mechanism 33, which is connected to both sides of the bottom of the foot pedal 32; and a limiting mechanism 34, which is inserted into the bottom of the valve body 31, with the limiting mechanism 34 corresponding to the position of the support mechanism 33. When the user operates the foot pedal 32... When the foot pedal 32 is stepped on, the fixed-axis rotation of the foot pedal 32 will drive the movement of the support mechanism 33. The limiting mechanism 34 will block the sliding of the bottom of the support mechanism 33 to prevent the foot pedal 32 from continuing to rotate. This limits the rotation angle of the foot pedal 32 that can be stepped on, making the output of the pneumatic signal more stable and reducing flow fluctuations. The opening of multiple mounting slots 311 allows for adjustment of the insertion position of the limiting mechanism 34 relative to the valve body 31, realizing multi-level adjustable limiting of the support mechanism 33. This allows the operator to control the pedal stroke more precisely, thereby accurately adjusting the opening of the pneumatic valve to meet different flow requirements.

[0042] The support mechanism 33 includes: a support arm 331, one end of which is rotatably connected to a rotating shaft, which is fixedly mounted on the foot pedal 32; and a counterweight foot post 332, which is fixedly connected to the other end of the support arm 331. The counterweight foot post 332 slides on the bottom of the valve body 31. The support arm 331 is inclined relative to the foot pedal 32. The support arm 331 facilitates the support of the foot pedal 32. When the limiting mechanism 34 holds the counterweight foot post 332, the rotation angle of the foot pedal 32 is limited.

[0043] Specifically, the limiting mechanism 34 includes: a first limiting frame 341, which is slidably inserted into the bottom of the valve body 31; a mounting base 342, which is connected to the bottom of the first limiting frame 341 and has an internal cavity; and an elastic positioning component 343, which is symmetrically inserted into both sides of the mounting base 342. The elastic positioning component 343 includes: a pressing plate 3431, which is slidably inserted into the bottom of the mounting base 342; an insertion positioning cylinder 3432, which is installed on the top of the pressing plate 3431 and is slidably inserted into the mounting base 342; and a spring 3433, which is connected to the side of the pressing plate 3431 away from the insertion positioning cylinder 3432 and provides elastic support for the pressing plate 3431. The bottom of the valve body 31 has multiple mounting grooves 311. A limiting mechanism 34 is slidably inserted into the inner cavity of the mounting groove 311. Positioning holes are provided on both inner walls of the mounting groove 311, and a positioning cylinder 3432 is inserted and cooperates with the inner cavity of the positioning hole. The T-shaped design of the mounting groove 311 facilitates limiting the sliding of the mounting seat 342, preventing excessive upward sliding. The cooperation between the positioning cylinder 3432 and the inner cavity of the positioning hole facilitates limiting the position of the mounting seat 342, ensuring stable installation of the mounting seat 342 within the mounting groove 311 and guaranteeing the stability of the first limiting frame 341. The first limiting frame 341 relative to the bottom of the valve body 31... The prominent design facilitates the blocking and limiting of the counterweight foot column 332 sliding at the bottom of the valve body 31, preventing excessive rotation of the foot pedal 32 and ensuring that the foot pedal 32 can be stably maintained at a fixed angle. The compression deformation of the spring 3433 facilitates the elastic support of the pressing plate 3431, making the insertion and positioning of the insertion positioning cylinder 3432 and the positioning hole more stable. By relatively pressing the two pressing plates 3431, the pressing plates 3431 slide towards the mounting base 342, allowing the insertion positioning cylinder 3432 to retract into the mounting base 342, thereby unlocking the position of the mounting base 342 and allowing for position adjustment after the limit mechanism 34 is disassembled.

[0044] The foot-operated pneumatic valve body 3 further includes: a rotating bracket 35, which is rotatably mounted in the middle of the foot pedal 32; and a second limiting bracket 36, which is fixedly mounted on the bottom of the valve body 31 and corresponds to the position of the rotating bracket 35. A second torsion spring is provided at the hinge between the rotating bracket 35 and the foot pedal 32. The torsional force provided by the second torsion spring on the rotating bracket 35 allows the bottom of the rotating bracket 35 to abut against the second limiting bracket 36. This allows the rotating bracket 35 to support the foot pedal 32 when no foot is stepping on it, preventing the foot pedal 32 from rotating arbitrarily and making the initial position of the foot pedal 32 more stable. When a foot is stepping on it, the foot will first step on the rotating bracket 35, causing the rotating bracket 35 to rotate and retract to the inside of the foot pedal 32 before the foot pedal 32 rotates.

[0045] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 foot-operated pneumatic control valve characterized by, The utility model relates to a kind of foot-operated pneumatic valve bodies, including: Pneumatic regulating valve body (1); Pipe (2), one end of pipe (2) is connected with pneumatic cylinder on pneumatic regulating valve body (1); Foot-operated pneumatic valve body (3) is connected to the other end of pipe (2), and the inside airflow of pneumatic cylinder on pneumatic regulating valve body (1) is controlled by the pedaling of foot-operated pneumatic valve body (3).

2. A foot-operated pneumatic control valve according to claim 1, characterised in that The foot-operated pneumatic valve body (3) includes: Valve body (31), the inside of valve body (31) is provided with valve core, the valve core slides in valve body (31), and the gas passage is changed by displacement Change or flow rate; Pedal (32), one end of pedal (32) is hinged with valve body (31); Supporting mechanism (33), supporting mechanism (33) is connected to the two sides of the bottom of pedal (32) respectively; Limiting mechanism (34), limiting mechanism (34) is installed in the bottom of valve body (31), and the position of limiting mechanism (34) corresponds with supporting mechanism (33).

3. A foot-operated pneumatic control valve according to claim 2, characterised in that The supporting mechanism (33) includes: Supporting arm (331), one end of supporting arm (331) is rotatably connected with rotating shaft, and the rotating shaft is fixedly installed on pedal (32); Counterweight foot column (332), counterweight foot column (332) is fixedly connected to the other end of supporting arm (331).

4. A foot-operated pneumatic control valve according to claim 2, wherein The limiting mechanism (34) includes: First limiting frame (341), first limiting frame (341) is slidably connected with the bottom of valve body (31); Mounting seat (342), mounting seat (342) is connected to the bottom of first limiting frame (341), and the inside of mounting seat (342) is provided with cavity; Elastic positioning assembly (343), elastic positioning assembly (343) is symmetrically installed on the two sides of mounting seat (342).

5. A foot-operated pneumatic control valve according to claim 4, characterised in that The elastic positioning assembly (343) includes: Pressing plate (3431), pressing plate (3431) is slidably connected with the bottom of mounting seat (342); Insertion positioning cylinder (3432), insertion positioning cylinder (3432) is installed on the top of pressing plate (3431), and insertion positioning cylinder (3432) is slidably connected with mounting seat (342); Spring (3433), spring (3433) is connected to the side, away from insertion positioning cylinder (3432), of pressing plate (3431), and spring (3433) is used for the elastic support of pressing plate (3431).

6. A foot-operated pneumatic control valve according to claim 5, wherein The bottom of valve body (31) is provided with a plurality of mounting grooves (311), the inner cavity of limiting mechanism (34) is slidably connected with mounting groove (311), and the inner wall on the two sides of mounting groove (311) is provided with positioning hole, and the inner cavity of insertion positioning cylinder (3432) is matched with positioning hole.

7. A foot-operated pneumatic control valve according to claim 2, wherein The foot-operated pneumatic valve body (3) further includes: Rotary support (35), rotary support (35) is rotatably installed in the middle of pedal (32); A second limiting frame (36) is fixedly installed at the bottom of the valve body (31), and the second limiting frame (36) corresponds to the position of the rotating support (35).

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