Novel handle control pressure regulating valve

Abstract

The utility model relates to a novel handle control pressure regulating valve, and belongs to the technical field of pneumatic control. The pressure regulating valve comprises a valve body and an upper valve cover, a cam is connected into the upper valve cover through a rotating shaft, one end of the rotating shaft penetrates out of the upper valve cover and is connected with a handle, a valve cavity is formed in the valve body in the axial direction, a top sleeve is slidably connected to the upper portion of the valve cavity, and the top end of the top sleeve makes contact with the cam in the upper valve cover. The bottom end of the top sleeve is in threaded connection with a sealing seat, a through shaft cavity is formed in the sealing seat, a connecting rod is arranged in the shaft cavity along the axis, the two ends of the connecting rod are fixedly connected with a hard upper sealing ball and a hard lower sealing ball respectively, the upper sealing ball can seal the axis cavity, and the sealing seat is located between the air inlet and the air outlet. The hard upper sealing ball is arranged in the sealing seat of the pressure regulating valve to form hard sealing for the valve seat, so that the sensitivity of pressure regulating response is ensured, and the pressure stability of a pneumatic system can be effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic control technical field, concretely relates to a novel handle control pressure regulating valve. BACKGROUND

[0002] Handle control pressure regulating valve is very common in the application of the original workover rig and drilling rig pneumatic control system. For example, the patent CN210461816U discloses a kind of features workover rig, and the handle pressure regulating valve of special engineering vehicle is simple in structure, and it is convenient and practical, but still there are many deficiencies, for example:

[0003] The valve seat assembly inside the pressure regulating valve uses soft sealing technology, and the control response of the pressure regulating valve is not sensitive enough, and the service life is not long;

[0004] The cam that realizes the regulating action of pressure regulating valve is connected with the pilot pressure regulating assembly through the top tongue, and the cam and the top tongue slide and rub, the friction is big, inconvenient operation, and in the long-term regulating application process, although the wear of pilot pressure regulating assembly can be reduced, the wear of cam and top tongue cannot be avoided, and long-term use will affect the normal work of pressure regulating valve, needs to be replaced regularly, and the application maintenance cost is high. SUMMARY

[0005] To solve the problems in the prior art, the utility model patent designs a kind of novel handle control pressure regulating valve, to solve the problems, such as the control response of the existing handle control pressure regulating valve is not sensitive enough, component is easy to wear, application maintenance cost is high.

[0006] The technical scheme adopted by the utility model is: the pressure regulating valve includes valve body and upper valve cover, and the two are fixedly connected by a plurality of bolts symmetrically arranged, the upper valve cover is connected with cam through rotating shaft, one end of the rotating shaft passes out of the upper valve cover and is connected with handle, the valve body is provided with valve cavity along the axial direction, the upper part of the valve cavity is slidably connected with top sleeve, the top end of the top sleeve is in contact with the cam in the upper valve cover, the bottom end of the top sleeve is threadedly connected with sealing seat, the outer periphery of the sealing seat is in close sliding connection with the valve cavity, and the inside is through shaft cavity, the side wall of the sealing seat is provided with air hole, the shaft cavity is provided with connecting rod along the axis, the two ends of the connecting rod are fixedly connected with hard upper sealing ball and lower sealing ball respectively, the upper sealing ball is slidably connected in the shaft cavity of the sealing seat and can seal the shaft cavity, the upper side between the upper sealing ball and the top sleeve is provided with valve spring, the middle part of the valve cavity is provided with inlet hole and outlet hole on the upper and lower sides respectively, the sealing seat is located between the inlet hole and the outlet hole, and the reset spring is arranged between the bottom end of the sealing seat and the bottom of the valve cavity.

[0007] Further, the top end of the top sleeve is connected with roller through first rotating shaft, and the wheel surface of the roller is in contact with the cam.

[0008] Further, the top of the top sleeve is provided with a second rotating shaft on the lower side of the roller.

[0009] Further, the outer periphery of the sealing seat is integrally formed with an annular protrusion to form a support ring, the outer periphery of the support ring is in close sliding connection with the inner wall of the valve cavity, the sidewall of the sealing seat is provided with air holes on the upper side and the lower side of the support ring respectively, the upper sealing ball can seal the shaft cavity between the upper air hole and the lower air hole, and the top end of the reset spring abuts against the bottom surface of the support ring.

[0010] Further, the bottom of the valve cavity is connected with an exhaust valve seat, the exhaust valve seat is provided with an exhaust hole along the shaft center, and the lower sealing ball can seal the exhaust hole.

[0011] Further, the outer periphery of the exhaust valve seat is in close sliding connection with the valve cavity, the bottom end of the valve cavity is threadedly connected with a spring seat, the adjusting spring is connected between the spring seat and the exhaust valve seat, and the spring seat is provided with a through hole along the shaft center.

[0012] Compared with the prior art, the novel handle control pressure regulating valve has the advantages that: the hard upper sealing ball and the lower sealing ball are arranged in the pressure regulating valve and are used for sealing the sealing seat and the exhaust valve seat respectively, the hard sealing technology is adopted, the pressure regulating response is sensitive, the pressure of the pneumatic system is stable, the manual control pressure regulating valve can work reliably for a long time, the roller is arranged on the top of the top sleeve and is connected with the cam, the traditional sliding friction is changed into rolling friction, the friction is reduced, the operation is flexible, and the wear of the cam can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a sectional structure schematic view of the novel handle control pressure regulating valve.

[0014] Figure 2 is Figure 1 a B-B sectional structure schematic view of the novel handle control pressure regulating valve.

[0015] Figure 3 is Figure 1 a local enlarged view of A in the novel handle control pressure regulating valve.

[0016] In the figure, 1 is a valve body, 2 is an upper valve cover, 3 is a cam, 4 is a rotating shaft, 5 is a handle, 6 is a top sleeve, 7 is a roller, 8 is a first rotating shaft, 9 is a second rotating shaft, 10 is a sealing seat, 11 is a connecting rod, 12 is an upper sealing ball, 13 is a lower sealing ball, 14 is a valve spring, 15 is a reset spring, 16 is an air inlet hole, 17 is an air outlet hole, 19 is an air hole, 20 is an exhaust valve seat, 21 is a spring seat, and 22 is an adjusting spring. DETAILED DESCRIPTION

[0017] The utility model discloses make further illustration to the utility model below combining with the drawing and specific embodiment. The technical scheme of the embodiment of the utility model is clearly and completely described, and the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0018] As Figure 1 、 2 , 3, the utility model discloses a new handle control pressure regulating valve's one embodiment, and the pressure regulating valve includes valve body 1 and upper valve cover 2, and the both are fixed through the multiple bolts of symmetrical setting and connect. Upper valve cover 2 is connected with cam 3 through pivot 4, and the both ends of pivot 4 are sealed and handled, and one end is rotationally fixed through nut, and the other end is fixedly connected with handle 5, and pivot 4 is rotated by rotating handle 5, to drive cam 3 rotation, and cam 3 is positioned in the middle part of pivot 4 through washer, shaft stopper and the like structure, so that it can not move left and right.

[0019] Valve body 1 is provided with the valve cavity of stepped type that penetrates along the axial direction inside, and the upper portion of valve cavity is slidably connected with top sleeve 6 through inlay nest, and the top end of top sleeve 6 is connected with roller 7 through first pivot 8, and the wheel surface of roller 7 is in contact with cam 3. The top of top sleeve 6 is provided with second pivot 9 below roller 7, and the length of the both ends of second pivot 9 exceeds top sleeve 6, for controlling the maximum stroke of top sleeve 6 downward. The inside of the lower half of top sleeve 6 is hollow blind cavity structure, and the bottom end is threadedly connected with sealing seat 10. The outer diameter of the lower half of top sleeve 6 is increased to form retaining platform, and the stepped surface of the upper portion of valve cavity is limited to retaining platform, to avoid top sleeve 6 from sliding out of valve cavity upward, and the outer periphery of retaining platform is inlaid with O-shaped sealing ring and is in close connection with the inner wall of valve cavity.

[0020] The middle part of the outer periphery of sealing seat 10 is integrally formed with annular protrusion to form support ring, and the outer periphery of support ring is also inlaid with O-shaped sealing ring and is in close sliding connection with the inner wall of valve cavity. The inside of sealing seat 10 is through shaft cavity, and the both sides of support ring are respectively provided with air hole 19 on the side wall, and air hole 19 is communicated with the inside shaft cavity. Reset spring 15 is fixedly sleeved on the lower part of the outer periphery of sealing seat 10, and the top end of reset spring 15 abuts against the bottom surface of support ring.

[0021] The sealing seat 10 is provided with a connecting rod 11 along the shaft center in the shaft cavity, the two ends of the connecting rod 11 are fixedly connected with hard upper sealing ball 12 and lower sealing ball 13 respectively, the upper sealing ball 12 is slidably connected in the shaft cavity of the sealing seat 10 and can seal the shaft cavity between the air holes 19 on the upper and lower sides of the supporting ring, the lower sealing ball 13 is located outside the shaft cavity of the sealing seat 10, and the connecting rod 11 is also sealed at the contact position with the bottom surface of the sealing seat 10. The blind cavity in the inner side of the lower half of the top sleeve 6 is provided with a valve spring 14, the bottom end of the valve spring 14 abuts against the top surface of the upper sealing ball 12. The middle part of the valve cavity is provided with an air inlet hole 16 and an air outlet hole 17 on the upper and lower sides respectively, the sealing seat 10 is located between the air inlet hole 16 and the air outlet hole 17, and the air inlet hole 16 and the air outlet hole 17 are communicated through the shaft cavity and the air hole 19 of the sealing seat 10.

[0022] The bottom of the valve cavity is slidably connected with an exhaust valve seat 20, the bottom surface of the exhaust valve seat 20 is provided with an exhaust hole, the bottom end of the lower sealing ball 13 and the reset spring 15 extends into the cavity of the exhaust valve seat 20, and the lower sealing ball 13 can seal the exhaust hole in the bottom surface of the exhaust valve seat 20. The outer periphery of the exhaust valve seat 20 is embedded with an O-shaped sealing ring and is slidably connected with the inner wall of the valve cavity. The bottom end of the valve cavity is provided with an internal thread, and the spring seat 21 is threadedly connected, the adjusting spring 22 is arranged between the bottom surface of the spring seat 21 and the exhaust valve seat 20, and the bottom surface of the spring seat 21 is provided with a through hole penetrating the shaft center.

[0023] When the novel handle control pressure regulating valve is applied, when ventilation is needed, the handle 5 is rotated, the cam 3 is rotated through the rotating shaft 4, the cam 3 is pressed and moves downward during the rotating process, the top sleeve 6 and the sealing seat 10 are also moved downward under the extrusion of the valve spring 14, the upper sealing ball 12, the connecting rod 11 and the lower sealing ball 13 in the sealing seat are also moved downward under the extrusion of the valve spring 14, the lower sealing ball 13 stops moving when it moves to the bottom surface of the exhaust valve seat 20 and seals the exhaust hole in the bottom surface of the exhaust valve seat 20, at this moment, the top sleeve 6 and the sealing seat 10 continue to move downward under the pushing of the cam, the relative displacement between the upper sealing ball 12 and the sealing seat 10 is generated, the sealing effect on the shaft cavity is lost, the air holes 19 on the upper and lower sides of the supporting ring of the sealing seat 10 are communicated through the shaft cavity, the air entering from the air inlet hole 16 passes through the air hole 19 and the shaft cavity and is discharged from the air outlet hole 17. When ventilation needs to be closed, the handle 5 is rotated back, the cam 3 is rotated back and loses the downward pressure on the top sleeve 6 and the sealing seat 10, the top sleeve 6 and the sealing seat 10 are moved upward and reset under the elastic force of the reset spring 15, the upper sealing ball 12 is reset under the pushing of the valve spring 14 and reseals the shaft cavity of the sealing seat 10, the gas cannot pass through the shaft cavity, and the air outlet hole 17 stops discharging. The position of the spring seat 21 can be axially adjusted by screwing, and the position of the exhaust valve seat 20 is adjusted through the adjusting spring 22.

[0024] The above merely describes the preferred embodiments of the present application and cannot be used to limit the scope of the present application, that is, any simple equivalent changes or modifications made according to the claims and the description of the present application shall still fall within the scope of the present application.

Claims

1. A new handle control pressure regulating valve characterized by, The pressure regulating valve comprises a valve body and an upper valve cover which are fixed by a plurality of symmetrically arranged bolts, a cam is connected to a rotating shaft in the upper valve cover, one end of the rotating shaft penetrates the upper valve cover and is connected to a handle, a valve cavity is axially formed in the valve body, a top sleeve is slidably connected to the upper part of the valve cavity, the top end of the top sleeve is in contact with the cam in the upper valve cover, a sealing seat is threadedly connected to the bottom end of the top sleeve, the outer periphery of the sealing seat is in close sliding connection with the valve cavity, the inner part of the sealing seat is a through shaft cavity, a ventilation hole is formed in the sidewall of the sealing seat, a connecting rod is arranged along the shaft center in the shaft cavity, hard upper and lower sealing balls are fixedly connected to the two ends of the connecting rod, the upper sealing ball is slidably connected in the shaft center cavity of the sealing seat and can seal the shaft center cavity, a valve spring is arranged between the upper side of the upper sealing ball and the top sleeve, an air inlet hole and an air outlet hole are respectively formed in the upper and lower parts of the valve cavity, the sealing seat is located between the air inlet hole and the air outlet hole, and a return spring is arranged between the bottom end of the sealing seat and the bottom part of the valve cavity.

2. A new handle control pressure regulating valve according to claim 1, characterized in that, The top end of the top sleeve is connected to a roller through a first rotating shaft, and the wheel surface of the roller is in contact with the cam.

3. A new handle control pressure regulating valve as claimed in claim 2, wherein, A second rotating shaft is arranged on the lower side of the roller at the top of the top sleeve, and the surface of the second rotating shaft is in contact with the wheel surface of the roller.

4. A new handle control pressure regulating valve according to claim 3, characterized in that, An annular protrusion forming a support ring is integrally formed on the outer periphery of the sealing seat, the outer periphery of the support ring is in close sliding connection with the inner wall of the valve cavity, ventilation holes are respectively formed in the upper and lower parts of the support ring on the sidewall of the sealing seat, the upper and lower ventilation holes are sealed by the upper sealing ball, and the top end of the return spring abuts against the bottom surface of the support ring.

5. A new handle control pressure regulating valve as claimed in claim 4, wherein, An exhaust valve seat is connected to the bottom part of the valve cavity, an exhaust hole is arranged along the shaft center of the exhaust valve seat, and the lower sealing ball can seal the exhaust hole.

6. A new handle control pressure regulating valve as claimed in claim 5, wherein, The outer periphery of the exhaust valve seat is in close sliding connection with the valve cavity, a spring seat is threadedly connected to the bottom end of the valve cavity, and an adjusting spring is connected between the spring seat and the exhaust valve seat.

7. A new handle control pressure regulating valve as claimed in claim 6, wherein, A through hole is formed in the spring seat along the shaft center.

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