Flow and pressure regulating valve

Abstract

The application provides a flow and pressure regulating valve, and relates to the technical field of valves.The flow and pressure regulating valve comprises a main valve body, a side valve body, a limiting assembly and a supporting assembly.Eight supporting pieces are fixedly connected to the circular arc surface of the main valve body, and every four of the eight supporting pieces form a group.The inside of the main valve body is through-penetrating.The liquid inlet and the liquid outlet are arranged at the two ends of the main valve body respectively.The side valve body is connected to the liquid outlet of the main valve body through bolts.A flow guide cylinder is fixedly connected to the middle of the main valve body.The outer wall of the flow guide cylinder and the inner wall of the main valve body are connected and constitute a flow guide channel.A throttling sleeve is sleeved on the liquid outlet of the main valve body, and the throttling sleeve is connected to the rear end surface of the flow guide cylinder through the side valve body.The application solves the problems that the flow and pressure regulating valve is easy to leak after being closed, the throttling sleeve is easy to vibrate when being impacted by gas or water, the stability of the throttling sleeve is affected, and the stability of the whole flow and pressure regulating valve is affected.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a flow regulating and pressure regulating valve. Background Technology

[0002] Flow regulating and pressure regulating valves are widely used in power plants, drinking water, and water supply. These valves regulate flow by adjusting the opening of a piston and by using a throttling sleeve installed at the front of the piston. Water or gas exiting through the orifice on the throttling sleeve collides with each other, causing velocity energy to dissipate. Based on this principle, the flow regulating and pressure regulating valve can simultaneously achieve the effects of flow regulation and pressure regulation.

[0003] Existing flow and pressure regulating valves all achieve closure through the cooperation of a sealing ring at the front end of the piston and the inner wall of the valve body. The throttling sleeve is mounted on the piston and moves with it. The disadvantage of this design is that the regulating valve is prone to leakage after closure, and the throttling sleeve is prone to vibration when impacted by gas or water, affecting the stability of the throttling sleeve and consequently affecting the stability of the entire flow and pressure regulating valve. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as easy leakage after the regulating valve is closed, and easy vibration of the throttling sleeve when impacted by gas or water, which affects the stability of the throttling sleeve and thus the stability of the entire regulating valve. Therefore, this invention proposes a regulating valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flow regulating and pressure regulating valve, comprising a main valve body, a side valve body, a limiting component, and a support component. Eight support members are fixedly connected to the arc surface of the main valve body, with four support members forming a group. The main valve body is internally continuous. An inlet and an outlet are respectively provided at both ends of the main valve body. The side valve body is connected to the outlet of the main valve body by bolts. A flow guide cylinder is fixedly connected to the middle of the main valve body. The outer wall of the flow guide cylinder and the inner wall of the main valve body are connected to form a flow channel. A throttling sleeve is fitted onto the outlet of the main valve body. The throttling sleeve is interference-fitted to the rear end face of the flow guide cylinder by the side valve body. A piston is slidably connected inside the flow guide cylinder and slidably fitted inside the throttling sleeve. An installation groove is provided on the throttling sleeve corresponding to the outlet position. A sealing ring is installed in the installation groove of the throttling sleeve. A drive frame is fixedly connected to the inside of the piston by bolts. A crank-connecting rod mechanism is installed on one side of the drive frame.

[0006] Preferably, a sealing ring is fixedly connected to the side of the side valve body and the main valve body that are close to each other, and the sealing ring is sleeved on the outside of the throttling sleeve.

[0007] Preferably, a first O-ring is fixedly connected to the side of the side valve body and the main valve body that are close to each other, and the first O-ring abuts against the sealing pressure ring.

[0008] Preferably, the crank-connecting rod mechanism includes a crank and a connecting rod, the connecting rod is mounted on the drive frame via a shaft, the connecting rod and the crank are rotatably connected, the crank is equipped with a valve shaft, and the valve shaft is rotatably connected within the valve shaft sleeve of the main valve body.

[0009] Preferably, the guide tube includes a tube body and a front tube cover. The front tube cover is fixedly connected to the front opening of the tube body by bolts, and a second O-ring is fixedly connected to the side of the tube body and the front tube cover that are close to each other.

[0010] Preferably, the support assembly includes a push rod, which is fixedly connected to the arc surface of the main valve body. The arc surface of the push rod is threaded. An adjusting plate is fixedly connected to the upper end of the push rod. Both ends of the adjusting plate are arc-shaped. Limiting holes are provided on both sides of the adjusting plate. A winding rod is slidably connected to the inner wall of the limiting hole. A rotating plate is rotatably connected to both ends of the winding rod. A buckle is fixedly connected to the lower surface of the rotating plate. A connecting frame is rotatably connected to one end of the rotating plate. A limiting block is fixedly connected to the lower end of the connecting frame. A slide rail is slidably connected to the surface of the limiting block. The slide rail is fixedly connected to the arc surface of the main valve body. Rotating rods are rotatably connected to the ends of the two connecting frames that are close to each other. Fixed frames are rotatably connected to the ends of the two rotating rods that are close to each other. Slip rings are fixedly connected to the ends of the two fixed frames that are close to each other. A threaded tube is rotatably connected to the lower end of the slip ring. The inner wall of the threaded tube is threadedly connected to the push rod.

[0011] Preferably, the arc surface of the threaded tube is provided with a plurality of anti-slip patterns, which are evenly distributed on the arc surface of the threaded tube.

[0012] Preferably, a circular plate is fixedly connected to the upper end of the slip ring, and a spring A is fixedly connected to the upper surface of the circular plate. The upper end of the spring A is fixedly connected to the adjusting plate, and the spring A is sleeved on the arc surface of the top rod.

[0013] Preferably, the support assembly includes four insert rods, which are slidably inserted into the same group of support members. The arc surface of each insert rod has a storage groove, and a spring B is fixedly connected inside the storage groove of each insert rod. One end of the spring B is fixedly connected to a positioning pin, and the end of the positioning pin away from the spring B slides through the support member. A top plate is fixedly connected to the upper end of each insert rod in the same group.

[0014] Preferably, a slide rod is slidably inserted into the positioning pin, and the end of the slide rod away from the positioning pin is fixedly connected to the inner wall of the insertion rod receiving groove.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. In this invention, by setting a main valve body, the piston is driven by a crank-connecting rod mechanism to slide along the inner wall of the guide tube and the inner wall of the throttling sleeve. When the piston slides to the right, the overlapping part with the throttling sleeve becomes larger and larger, and the area of ​​the throttling sleeve that can be used for gas or liquid to pass through becomes smaller and smaller, thereby achieving the purpose of flow regulation. When the piston moves to the sealing ring, the flow regulation and pressure regulating valve is completely closed. The working principle of the throttling sleeve is to increase the medium flow rate through the round hole at its upper end. After the medium is ejected from the round hole, the collision between them will cause the velocity energy to be lost, thereby achieving the purpose of pressure regulation. Since the entire throttling sleeve is press-fitted onto the main valve body through the side valve body, it does not move with the piston and is not easily vibrated when impacted by the medium. In addition, the sealing ring is installed inside the throttling sleeve. When the flow regulation and pressure regulating valve is closed, the front end of the piston is inserted into the sealing ring. Compared with installing the sealing ring at the front end of the piston, by setting the main valve body, the sealing state can be maintained without applying any force, resulting in better sealing performance and thus improving the sealing performance of the pressure regulating valve.

[0017] 2. In this invention, by setting a limiting component, when the side valve body is installed onto the main valve body with bolts, the side valve body is first placed between the clips, and then the threaded tube is rotated, causing the threaded tube to move downwards with the thread. At this time, spring A will give the slip ring a downward elastic force, and the slip ring moves downwards with the threaded tube. The downward movement of the slip ring will drive the rotating rod to rotate, and the rotation of the rotating rod will drive the connecting frame and the limiting block to move. The limiting block will slide along the inner wall of the slide rail. The limiting block and the slide rail have the effect of limiting the movement position of the connecting frame. At this time, the connecting frame drives the rotating plate to move, and the rotating plate drives the winding rod to move along the limiting hole of the adjusting plate. The rotating plate will directly drive the clips to move. The two clips move towards each other and clamp the side valve body, achieving the effect of quickly positioning the side valve body and the main valve body, thereby facilitating the quick and accurate installation of the side valve body onto the main valve body.

[0018] 3. In this invention, by setting an adjustment plate and a limiting hole, the cross-section of the limiting hole is a quarter circle arc. When the rotating plate rotates and drives the winding rod to move, the winding rod will always slide along the inner wall of the arc-shaped limiting hole. Under the pressure of the limiting hole, the rotating plate will rotate, thereby clamping and limiting the side valve body.

[0019] 4. In this invention, by setting up a support component, when it is necessary to install the top plate onto the support component to support the main valve body, the insertion rod is directly inserted into the support component. At this time, the positioning pin is squeezed and will directly retract into the storage groove of the insertion rod. When the insertion rod drives the positioning pin to the appropriate position, the spring B will give the positioning pin elastic force, so that the positioning pin is directly inserted into the support component, achieving the effect of quickly fixing the insertion rod. At this time, the main valve body and the side valve body can be directly supported by the support component. After use, the insertion rod can be squeezed into the storage groove and the insertion rod can be quickly pulled out from the support component. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of a flow regulating and pressure regulating valve is provided for this invention;

[0021] Figure 2 This invention provides a schematic diagram of the internal structure of the main valve body of a flow regulating and pressure regulating valve;

[0022] Figure 3 This invention proposes a flow regulating and pressure regulating valve. Figure 2 Enlarged view of point A;

[0023] Figure 4 This invention provides a schematic diagram of the structure of a flow regulating and pressure regulating valve limiting assembly;

[0024] Figure 5 This invention proposes a flow regulating and pressure regulating valve. Figure 4 Partial structural diagram;

[0025] Figure 6 This invention proposes a flow regulating and pressure regulating valve. Figure 4 Enlarged view of point B;

[0026] Figure 7 This invention provides a structural schematic diagram of a flow regulating and pressure regulating valve support assembly;

[0027] Figure 8 A cross-sectional view of the insertion rod of a flow regulating and pressure regulating valve is provided for this invention.

[0028] Legend: 1. Main valve body; 2. Side valve body; 3. Inlet; 4. Outlet; 5. Guide tube; 5A. Cylinder; 5B. Front cover; 5C. Second O-ring; 6. Guide channel; 7. Throttling sleeve; 8. Piston; 9. Sealing ring; 10. Drive frame; 11. Sealing pressure ring; 12. First O-ring; 13. Crank; 14. Connecting rod; 15. Valve shaft; 16. Push rod; 17. Adjustment 18. Section plate; 19. Limiting hole; 20. Winding rod; 21. Rotating plate; 22. Buckle; 23. Connecting frame; 24. Limiting block; 25. Slide rail; 26. Rotating rod; 27. Fixing frame; 28. Round plate; 29. ​​Slip ring; 30. Threaded tube; 31. Spring A; 32. Insert rod; 33. Top plate; 34. Storage slot; 35. Spring B; 36. Positioning pin; 37. Slide rod; 38. Support component. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0031] Example 1, as Figure 1-8 As shown, the present invention provides a flow regulating and pressure regulating valve, including a main valve body 1, a side valve body 2, a limiting component and a support component. Eight support members 37 are fixedly connected to the arc surface of the main valve body 1. The eight support members 37 are grouped into groups of four. The interior of the main valve body 1 is through. The two ends of the main valve body 1 are respectively provided with a liquid inlet 3 and a liquid outlet 4.

[0032] The following section will describe in detail the specific settings and functions of its main valve body 1, limit components, and support components.

[0033] like Figure 1 and Figure 4 As shown, the side valve body 2 is bolted to the outlet 4 of the main valve body 1. A guide tube 5 is fixedly connected to the middle of the main valve body 1. The outer wall of the guide tube 5 and the inner wall of the main valve body 1 are connected to form a guide channel 6. A throttling sleeve 7 is fitted onto the outlet 4 of the main valve body 1. The throttling sleeve 7 is interference-fitted to the rear end face of the guide tube 5 by the side valve body 2. A piston 8 is slidably connected inside the guide tube 5. The piston 8 is slidably fitted inside the throttling sleeve 7. The throttling sleeve 7 has an installation groove corresponding to the position of the outlet 4. A sealing ring 9 is installed in the installation groove of the throttling sleeve 7. The piston 8 is fixedly connected to the drive frame 10 by bolts. A crank connecting rod mechanism is installed on one side of the drive frame 10. A sealing pressure ring 11 is fixedly connected to the side of the side valve body 2 and the main valve body 1 that are close to each other. The sealing pressure ring 11 is fitted onto the outside of the throttling sleeve 7. A first O-ring 12 is fixedly connected to the side of the side valve body 2 and the main valve body 1 that are close to each other, and the first O-ring 12 abuts against the sealing pressure ring 11. The crank-connecting rod mechanism includes a crank 13 and a connecting rod 14. The connecting rod 14 is mounted on the drive frame 10 via a shaft. The connecting rod 14 and the crank 13 are rotatably connected. A valve shaft 15 is mounted on the crank 13 and is rotatably connected in the valve shaft sleeve of the main valve body 1. The guide tube 5 includes a tube body 5A and a front tube cover 5B. The front tube cover 5B is fixedly connected to the front opening of the tube body 5A by bolts. A second O-ring 5C is fixedly connected to the side of the tube body 5A and the front tube cover 5B that are close to each other.

[0034] The main valve body 1 achieves the following effect: by setting the main valve body 1, the piston 8 is driven by the crank-connecting rod mechanism to slide along the inner wall of the guide cylinder 5 and the inner wall of the throttling sleeve 7. When the piston 8 slides to the right, the overlapping part with the throttling sleeve 7 becomes larger and larger, and the area of ​​the throttling sleeve 7 that can be used for gas or liquid to pass through becomes smaller and smaller, thereby achieving the purpose of flow regulation. When the piston 8 moves to the sealing ring 9, the flow regulation and pressure regulating valve is completely closed. The working principle of the throttling sleeve 7 is to increase the medium flow rate through the round hole at its upper end. After the medium is ejected from the round hole, it interacts with the surrounding medium. The collision will cause the velocity energy to disappear, thus achieving the purpose of pressure regulation. Since the throttling sleeve 7 is press-fitted onto the main valve body 1 through the side valve body 2, it does not move with the piston 8 and is not easily vibrated when impacted by the medium. In addition, the sealing ring 9 is installed inside the throttling sleeve 7. When the flow regulating valve is closed, the front end of the piston 8 is inserted into the sealing ring 9. Compared with installing the sealing ring 9 at the front end of the piston 8, by setting the main valve body 1, the sealing state can be maintained without applying any force, resulting in better sealing performance and thus improving the sealing performance of the pressure regulating valve.

[0035] like Figure 1 and Figure 3 As shown, the limiting assembly includes a push rod 16, which is fixedly connected to the arc surface of the main valve body 1. The arc surface of the push rod 16 is threaded. An adjusting plate 17 is fixedly connected to the upper end of the push rod 16. Both ends of the adjusting plate 17 are arc-shaped. Limiting holes 18 are provided on both sides of the adjusting plate 17. A winding rod 19 is slidably connected to the inner wall of the limiting hole 18. A rotating plate 20 is rotatably connected to both ends of the winding rod 19. A snap fastener 21 is fixedly connected to the lower surface of the rotating plate 20. A connecting bracket 22 is rotatably connected to one end of the rotating plate 20. A limiting block 23 is fixedly connected to the lower end of the connecting frame 22. A slide rail 24 is slidably connected to the surface of the limiting block 23. The slide rail 24 is fixedly connected to the arc surface of the main valve body 1. Rotating rods 25 are rotatably connected to the ends of the two connecting frames 22 that are close to each other. Fixed frames 26 are rotatably connected to the ends of the two rotating rods 25 that are close to each other. Slip rings 28 are fixedly connected to the ends of the two fixed frames 26 that are close to each other. A threaded tube 29 is rotatably connected to the lower end of the slip ring 28. The inner wall of the threaded tube 29 is threadedly connected to the top rod 16. Several anti-slip patterns are evenly distributed on the arc surface of the threaded tube 29. A circular plate 27 is fixedly connected to the upper end of the slip ring 28. A spring A30 is fixedly connected to the upper surface of the circular plate 27. The upper end of the spring A30 is fixedly connected to the adjusting plate 17. The spring A30 is sleeved on the arc surface of the top rod 16.

[0036] The effect of the entire limiting assembly is as follows: when the side valve body 2 is installed onto the main valve body 1 with bolts, the side valve body 2 is first placed between the clips, and then the threaded tube 29 is rotated, causing the threaded tube 29 to move downwards via the threads. At this time, the spring A30 will provide a downward elastic force to the slip ring 28, and the slip ring 28 will follow the threaded tube 29 downwards. The downward movement of the slip ring 28 will drive the rotating rod 25 to rotate, and the rotation of the rotating rod 25 will drive the connecting frame 22 and the limiting block 23 to move. The limiting block 23 will slide along the inner wall of the slide rail 24. The limiting block 23 and the slide rail 24 have the effect of limiting the movement position of the connecting frame 22. At this time, the connecting frame 22 drives the rotating plate 20 to move and rotate. Plate 20 drives the winding rod 19 to move along the limiting hole 18 of the adjusting plate 17. At this time, the rotating plate 20 will directly drive the buckle to move. The two buckles move closer to each other and clamp the side valve body 2, achieving the effect of quick positioning between the auxiliary side valve body 2 and the main valve body 1. This facilitates the quick and accurate installation of the side valve body 2 on the main valve body 1. By setting the adjusting plate 17 and the limiting hole 18, the cross section of the limiting hole 18 is a quarter circle arc. When the rotating plate 20 rotates and drives the winding rod 19 to move, the winding rod 19 will always slide along the inner wall of the arc-shaped limiting hole 18. Under the pressure of the limiting hole 18, the rotating plate 20 will rotate, thereby clamping and limiting the side valve body 2.

[0037] like Figure 1 and Figure 3 As shown, the support assembly includes four insert rods 31, which are slidably inserted into the same group of support members 37. Each insert rod 31 has a storage groove 33 on its arc-shaped surface. A spring B34 is fixedly connected inside the storage groove 33 of the insert rod 31. A positioning pin 35 is fixedly connected to one end of the spring B34. The end of the positioning pin 35 away from the spring B34 slides through the support member 37. A top plate 32 is fixedly connected to the upper end of the insert rods 31 in the same group. A sliding rod 36 is slidably inserted into the positioning pin 35. The end of the sliding rod 36 away from the positioning pin 35 is fixedly connected to the inner wall of the storage groove 33 of the insert rod 31.

[0038] The entire support assembly achieves the following effect: when the top plate 32 needs to be installed on the support member 37 to support the main valve body 1, the insertion rod 31 is directly inserted into the support member 37. At this time, the positioning pin 35 will be squeezed and will directly retract into the storage groove 33 of the insertion rod 31. When the insertion rod 31 moves the positioning pin 35 to the appropriate position, the spring B34 will give the positioning pin 35 elastic force, so that the positioning pin 35 is directly inserted into the support member 37, achieving the effect of quickly fixing the insertion rod 31. At this time, the main valve body 1 and the side valve body 2 can be directly supported by the support assembly. After use, the insertion rod 31 can be squeezed into the storage groove 33 and the insertion rod 31 can be quickly pulled out from the support member 37.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A flow regulating and pressure regulating valve, comprising a main valve body (1), a side valve body (2), a limiting assembly, and a support assembly, wherein eight support members (37) are fixedly connected to the arc surface of the main valve body (1), and the eight support members (37) are grouped in sets of four, characterized in that: The main valve body (1) is internally continuous. An inlet (3) and an outlet (4) are respectively provided at both ends of the main valve body (1). The side valve body (2) is connected to the outlet (4) of the main valve body (1) by bolts. A guide tube (5) is fixedly connected in the middle of the main valve body (1). The outer wall of the guide tube (5) and the inner wall of the main valve body (1) are connected to form a guide channel (6). A throttling sleeve (7) is fitted onto the outlet (4) of the main valve body (1). (7) The side valve body (2) is interference-fitted to the rear end face of the guide tube (5). The guide tube (5) is slidably connected to a piston (8). The piston (8) is slidably sleeved in the throttling sleeve (7). The throttling sleeve (7) has an installation groove at the position corresponding to the liquid outlet (4). A sealing ring (9) is installed in the installation groove of the throttling sleeve (7). The piston (8) is fixedly connected to the drive frame (10) by bolts. A crank connecting rod mechanism is installed on one side of the drive frame (10). The limiting assembly includes a push rod (16), which is fixedly connected to the arc surface of the main valve body (1). The arc surface of the push rod (16) is threaded. An adjusting plate (17) is fixedly connected to the upper end of the push rod (16). The two ends of the adjusting plate (17) are arc-shaped. Limiting holes (18) are opened on both sides of the adjusting plate (17). A winding rod (19) is slidably connected to the inner wall of the limiting hole (18). A rotating plate (20) is rotatably connected to both ends of the winding rod (19). A buckle (21) is fixedly connected to the lower surface of the rotating plate (20). A connecting bracket (2) is rotatably connected to one end of the rotating plate (20). 2) The lower end of the connecting frame (22) is fixedly connected to a limiting block (23), and a slide rail (24) is slidably connected to the surface of the limiting block (23). The slide rail (24) is fixedly connected to the arc surface of the main valve body (1). The two connecting frames (22) are rotatably connected to a rotating rod (25) at one end close to each other. The two rotating rods (25) are rotatably connected to a fixed frame (26) at one end close to each other. The two fixed frames (26) are fixedly connected to a slip ring (28) at one end close to each other. The lower end of the slip ring (28) is rotatably connected to a threaded tube (29). The inner wall of the threaded tube (29) is threadedly connected to the top rod (16). The arc surface of the threaded tube (29) is provided with several anti-slip patterns, which are evenly distributed on the arc surface of the threaded tube (29). The upper end of the slip ring (28) is fixedly connected to a circular plate (27), and the upper surface of the circular plate (27) is fixedly connected to a spring A (30). The upper end of the spring A (30) is fixedly connected to the adjusting plate (17), and the spring A (30) is sleeved on the arc surface of the top rod (16). The support assembly includes four insert rods (31), which are slidably inserted into the same group of support members (37). The arc surface of each insert rod (31) is provided with a storage groove (33). A spring B (34) is fixedly connected inside the storage groove (33) of the insert rod (31). A positioning pin (35) is fixedly connected to one end of the spring B (34). The end of the positioning pin (35) away from the spring B (34) slides through the support member (37). A top plate (32) is fixedly connected to the upper end of the insert rods (31) in the same group.

2. The flow regulating and pressure regulating valve according to claim 1, characterized in that: A sealing ring (11) is fixedly connected to the side of the side valve body (2) and the main valve body (1) that are close to each other, and the sealing ring (11) is sleeved on the outside of the throttling sleeve (7).

3. A flow regulating and pressure regulating valve according to claim 2, characterized in that: The side valve body (2) and the main valve body (1) are fixedly connected to each other on the side close to each other, and the first O-ring (12) abuts against the sealing pressure ring (11).

4. A flow regulating and pressure regulating valve according to claim 3, characterized in that: The crank-connecting rod mechanism includes a crank (13) and a connecting rod (14). The connecting rod (14) is mounted on the drive frame (10) via a shaft. The connecting rod (14) and the crank (13) are rotatably connected. The crank (13) is equipped with a valve shaft (15), which is rotatably connected to the valve shaft sleeve of the main valve body (1).

5. A flow regulating and pressure regulating valve according to claim 4, characterized in that: The guide tube (5) includes a tube body (5A) and a front tube cover (5B). The front tube cover (5B) is fixedly connected to the front opening of the tube body (5A) by means of bolts. A second O-ring (5C) is fixedly connected to the side of the tube body (5A) and the front tube cover (5B) that are close to each other.

6. A flow regulating and pressure regulating valve according to claim 1, characterized in that: A slide rod (36) is slidably inserted into the positioning pin (35), and the end of the slide rod (36) away from the positioning pin (35) is fixedly connected to the inner wall of the storage groove (33) of the insertion rod (31).

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