Bearing type electric stop valve

Abstract

The utility model provides a bearing type electric stop valve which comprises a valve body and an actuator, the valve body is provided with a piston main body, a cavity is formed between the valve body and the piston main body, the outer side of the piston main body is fixedly sleeved with a piston shaft sleeve, the piston shaft sleeve is located in the cavity, a valve rod is fixedly installed in the valve body, and the outer side of the valve rod is fixedly sleeved with a valve rod lock cap. A bearing pin is fixedly installed in the valve rod and extends out of the valve rod, a bearing is fixedly connected to the bearing pin, one end of the bearing pin extends out of the valve rod and is fixedly connected with the piston shaft sleeve, the bearing is located in the piston shaft sleeve, and a valve element spring is fixedly installed in the piston shaft sleeve and extends out of one end of the piston shaft sleeve. One end of the valve body is fixedly connected with a valve cover, the joint of the valve cover and the valve body is fixedly connected with a valve cover gasket, the outer side of the valve cover is fixedly sleeved with a welding sleeve, and the joint of the valve cover and the welding sleeve is fixedly provided with a lock nut.

Description

Technical Field

[0001] The utility model belongs to the technical field of stop valves and relates to a bearing type electric stop valve. Background Art

[0002] The electric stop valve, also known as the electric gate valve, is the most widely used valve. It is different from the electric ball valve. The reason why it is so popular is that the friction between the sealing surfaces during the opening and closing process is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is not only suitable for medium and low pressures, but also for high pressures.

[0003] The Chinese patent with publication number CN204025840U discloses an electric stop valve, including a valve body, a valve stem, a valve core, a valve cover, a sealing valve seat and a driving motor. The valve body is composed of an upper valve body and a lower valve body. The upper valve body is provided with an upper flange end face, and the lower valve body is provided with a lower flange end face. The sealing valve seat is clamped and fixed between the upper flange end face of the upper valve body and the lower flange end face of the lower valve body. A screw hole is provided at the top of the upper valve body, and a threaded surface that can form a spiral fit with the screw hole is provided in the middle of the valve stem. The valve core is located in the cavity of the upper valve body. The valve core is The metal valve core skeleton and the elastic non-metallic valve core sleeve are fixedly connected to the inner end of the valve stem located in the upper valve body. The elastic non-metallic valve core sleeve is wrapped on the outer surface of the metal valve core skeleton to form a corresponding sealing match with the sealing end surface of the sealing valve seat. The valve cover is fixedly mounted on the upper valve body, and the outer end of the valve stem passing through the upper valve body is located in the valve cover. The drive motor is fixedly mounted on the top of the upper valve body. The drive motor is linked to the valve stem through a transmission mechanism. The transmission mechanism includes a rotating shaft, an active bevel gear, a driven bevel gear, a first gear, and a second gear. The rotating shaft is installed in the valve cover.

[0004] The patent provides an electric stop valve with a valve stem and a valve core installed inside the valve body, but lacks a bearing component to stably connect the components inside the valve body. Utility Model Content

[0005] The utility model aims to provide a bearing type electric stop valve in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a bearing type electric stop valve, comprising a valve body and an actuator, the valve body is equipped with a piston body, a cavity is formed between the valve body and the piston body, a piston sleeve is fixedly mounted on the outer side of the piston body and the piston sleeve is located in the cavity, a valve stem is fixedly mounted inside the valve body, a valve stem locking cap is fixedly mounted on the outer side of the valve stem, a bearing pin is fixedly mounted inside the valve stem and the bearing pin extends out of the valve stem, a bearing is fixedly connected to the bearing pin, one end of the bearing pin extends out of the valve stem and is fixedly connected to the piston sleeve, the bearing is located inside the piston sleeve, a valve core spring is fixedly mounted inside the piston sleeve, the valve core spring extends out of one end of the piston sleeve, a spring washer is fixedly arranged in the cavity, one end of the valve core spring is connected to the spring washer, a valve cover is fixedly connected to one end of the valve body, a valve cover gasket is fixedly connected to the connection between the valve cover and the valve body, a welding sleeve is fixedly mounted on the outer side of the valve cover, and a locking cap is fixedly mounted at the connection between the valve cover and the welding sleeve.

[0007] In the above-mentioned bearing-type electric stop valve, a bearing pad is fixedly installed at the connection between the bearing and the bearing pin.

[0008] In the above-mentioned bearing type electric stop valve, a shaft retaining spring is fixedly arranged in the cavity, the shaft retaining spring is in contact with one side of the spring washer and is fixedly connected to the outer wall of the piston body.

[0009] In the above-mentioned bearing type electric stop valve, a joint is sealed and fixed at one end of the valve body.

[0010] In the above-mentioned bearing-type electric stop valve, the actuator is fixedly installed on the outside of the valve body, the lower end of the actuator is fixedly connected to a connecting head, a fixing bolt is fixed inside the connecting head, the fixing bolt is fixedly connected to the actuator, a cylindrical pin is installed inside the connecting head, and the cylindrical pin is fixedly connected to the outer wall of the valve body.

[0011] In the above-mentioned bearing type electric stop valve, a sealing distribution plate is fixedly installed inside the valve body, and the sealing distribution plate is connected to one side of the piston body.

[0012] Compared with the prior art, the utility model provides a bearing-type electric stop valve with the following beneficial effects: by arranging a bearing assembly inside the valve body, the bearing pin is respectively connected to the valve stem and the piston sleeve, and the bearing is fixedly connected to the inside of the piston sleeve. The bearing and the bearing pin play a role in stabilizing the connection between the valve stem and the piston body, so that the interior of the utility model has strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front sectional structural diagram of the utility model;

[0014] Figure 2 It is a side sectional structural diagram of the utility model.

[0015] In the figure: 1. valve body; 11. cavity; 12. shaft retaining ring; 2. actuator; 21. connector; 22. set bolt; 23. cylindrical pin; 3. piston body; 31. piston sleeve; 32. sealing distribution plate; 4. valve stem; 41. valve stem locking cap; 5. bearing pin; 51. bearing; 52. bearing pad; 6. valve core spring; 61. spring washer; 7. valve cover; 71. valve cover gasket; 8. welding sleeve; 81. locking cap; 9. joint. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 to Figure 2 As shown, this embodiment includes a valve body 1 and an actuator 2, the valve body 1 is installed with a piston body 3, a cavity 11 is formed between the inner wall of the valve body 1 and the outer wall of the piston body 3, a piston sleeve 31 is sleeved and fixed on the outer side of the piston body 3 and the piston sleeve 31 is located in the cavity 11, a valve stem 4 is fixedly installed inside the valve body 1, a valve stem 4 lock cap 81 is sleeved and fixed on the outer side of the valve stem 4, a bearing pin 5 is fixedly installed inside the valve stem 4 and extends out of the valve stem 4, the bearing pin 5 extending out of the valve stem 4 is connected to the piston sleeve 31, a bearing 51 is fixedly connected to the bearing pin 5 and the bearing 51 is located inside the piston sleeve 31, and a bearing pad 5 is fixedly installed at the connection between the bearing 51 and the bearing pin 5 2. The bearing pad 52 plays a shock-absorbing role. A valve core spring 6 is fixedly installed on the side of the piston sleeve 31 away from the bearing pin 5. One end of the valve core spring 6 extends out of the piston sleeve 31 and is connected to a spring washer 61 installed in the cavity 11. The valve cover 7 is fixedly connected to one end of the valve body 1. The valve cover 7 gasket is fixedly connected to the connection between the valve cover 7 and the valve body 1. The valve cover 7 gasket ensures the sealing between the valve cover 7 and the valve body 1. A welding sleeve 8 is fixedly mounted on the outer side of the valve cover 7. A locking cap 81 is fixedly installed at the connection between the valve cover 7 and the welding sleeve 8. The locking cap 81 stably connects the valve cover 7 and the welding sleeve 8. One end of the joint 9 extends into the cavity 11 to seal the joint 9 with the valve body 1.

[0018] like Figure 1 to Figure 2 As shown, the actuator 2 is fixedly installed on the outside of the valve body 1, and a connecting head 21 is fixedly connected to the lower end of the actuator 2. A fixing bolt 22 is fixed inside the connecting head 21, and the fixing bolt 22 is fixedly connected to the actuator 2. A cylindrical pin 23 is installed inside the connecting head 21, and the cylindrical pin 23 is fixedly connected to the outer wall of the valve body 1. The fixing bolt 22 and the cylindrical pin 23 enable the connecting head 21 to fix the actuator 2 and the valve body 1.

[0019] To elaborate further, Figure 1As shown, the shaft retaining spring 12 is fixedly installed in the cavity 11, the shaft retaining spring 12 is in contact with one side of the spring washer 61 and is fixedly connected to the outer wall of the piston body 3. The shaft retaining spring 12 can fix the valve core spring 6 so that the valve core spring 6 can only move axially.

[0020] To elaborate further, Figure 1 As shown, the sealing distribution plate 32 is fixedly installed on one side of the piston body 3 and the sealing distribution plate 32 and the piston body 3 are sealed. The sealing distribution plate 32 enables the piston body 3 to have a strong sealing performance.

[0021] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0022] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A bearing (51) type electric stop valve, comprising a valve body (1) and an actuator (2), wherein the valve body (1) is provided with a piston body (3), characterized in that: A cavity (11) is formed between the valve body (1) and the piston body (3); a piston sleeve (31) is sleeved and fixed on the outer side of the piston body (3) and the piston sleeve (31) is located in the cavity (11); a valve stem (4) is fixedly installed inside the valve body (1); a valve stem (4) lock cap (81) is sleeved and fixed on the outer side of the valve stem (4); a bearing pin (5) is fixedly installed inside the valve stem (4) and the bearing pin (5) extends out of the valve stem (4); a bearing (51) is fixedly connected to the bearing pin (5); one end of the bearing pin (5) extends out of the valve stem (4) and is fixedly connected to the piston sleeve (31); The bearing (51) is located inside the piston sleeve (31), a valve core spring (6) is fixedly installed inside the piston sleeve (31), the valve core spring (6) extends out of one end of the piston sleeve (31), a spring washer (61) is fixedly arranged in the cavity (11), one end of the valve core spring (6) is connected to the spring washer (61), one end of the valve body (1) is fixedly connected to a valve cover (7), a valve cover (7) washer is fixedly connected at the connection between the valve cover (7) and the valve body (1), a welding sleeve (8) is fixedly sleeved on the outside of the valve cover (7), and a locking cap (81) is fixedly installed at the connection between the valve cover (7) and the welding sleeve (8).

2. A bearing (51) type electric stop valve according to claim 1, characterized in that: A bearing pad (52) is fixedly mounted at the connection between the bearing (51) and the bearing pin (5).

3. A bearing (51) type electric stop valve according to claim 1, characterized in that: A shaft retaining spring (12) is fixedly arranged in the cavity (11), the shaft retaining spring (12) is in contact with one side of the spring washer (61), and the shaft retaining spring (12) is fixedly connected to the outer wall of the piston body (3).

4. A bearing (51) type electric stop valve according to claim 1, characterized in that: A joint (9) is sealed and fixed to one end of the valve body (1).

5. A bearing (51) type electric stop valve according to claim 1, characterized in that: The actuator (2) is fixedly mounted on the outside of the valve body (1); the lower end of the actuator (2) is fixedly connected to a connecting head (21); a fixing bolt (22) is fixed inside the connecting head (21); the fixing bolt (22) is fixedly connected to the actuator (2); a cylindrical pin (23) is installed inside the connecting head (21); the cylindrical pin (23) is fixedly connected to the outer wall of the valve body (1).

6. A bearing (51) type electric stop valve according to claim 1, characterized in that: A sealing distribution plate (32) is fixedly installed inside the valve body (1), and the sealing distribution plate (32) is connected to one side of the piston body (3).

Images