Ball valve with pressure relief mechanism

Abstract

The utility model relates to the technical field of ball valves, in particular to a ball valve with a pressure relief mechanism, which comprises a shell, the upper end of the shell is fixedly connected with an upper cover through a flange, the interior of the shell is rotatably connected with a valve core, and the upper end of the valve core is provided with a hole in a penetrating manner; a cylinder is slidably connected to the interior of the cylinder, pressure relief holes are formed in the two sides of the cylinder, an upper shell is fixedly connected to the upper end of the cylinder, a screw is in threaded connection with the interior of the upper end of the upper shell, the screw is rotatably connected with the upper end of the cylinder, and hole grooves are formed in the two sides of the upper shell. When the upper end of the cylinder is in attached contact with the inner top of the upper shell, the pressure relief hole is aligned with the hole groove, it is ensured that a pressure medium can be smoothly discharged, potential safety hazards caused by accumulation of the pressure medium in the valve element are avoided, meanwhile, the vertical rod slides out to visually remind that the valve element is in pressure relief, and safety is improved. Therefore, an operator can know that the pressure relief operation is carried out without extra inspection or monitoring.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with a pressure relief mechanism. Background Technology

[0002] A ball valve is a fluid control device that opens and closes a pipeline by rotating an internal ball, thereby controlling the flow or cut off of fluid. It is primarily used in piping systems requiring rapid opening and closing and good sealing performance, and is one of the important pieces of equipment in the field of industrial fluid control.

[0003] Existing ball valves lack a pressure relief mechanism. When the ball valve is closed, the pressure medium accumulated inside the valve core cannot be discharged in time. As the temperature rises or the medium expands, the internal pressure may rise sharply, which may increase the risk of ball valve damage. Utility Model Content

[0004] The purpose of this invention is to provide a ball valve with a pressure relief mechanism, which facilitates pressure relief inside the ball valve and solves the problem of inconvenient pressure relief inside the ball valve in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ball valve with a pressure relief mechanism includes a housing, a top cover fixedly connected to the upper end of the housing via a flange, a valve core rotatably connected inside the housing, and a hole penetrating the upper end of the valve core; a column rotatably mounted on the inner wall of the top cover, the lower end of the column being fixedly connected to the upper end of the valve core, a cylindrical column slidably connected inside the column, pressure relief holes on both sides of the cylindrical column, an upper shell fixedly connected to the upper end of the column, a screw threadedly connected to the upper end of the upper shell, the screw being rotatably connected to the upper end of the cylindrical column, and slots on both sides of the upper shell.

[0007] Preferably, a ring plate is fixedly connected to the side wall of the upper cover, and the side wall of the ring plate is provided with scale lines.

[0008] Preferably, a pointer head is fixedly connected to the side wall of the column, and the pointer head cooperates with the scale line.

[0009] Preferably, the column sidewall is fixedly connected to multiple diagonal rods, the multiple diagonal rods are distributed in a circular array, and the ends of the multiple diagonal rods are fixedly connected to a ring.

[0010] Preferably, a circular plate is fixedly connected to the upper end of the screw, and a hexagonal slot is provided on the upper end of the circular plate.

[0011] Preferably, a vertical rod is fixedly connected to the upper end of the cylindrical column, and the vertical rod is slidably connected to the upper end of the upper shell.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. The coordination between the pointer and the scale allows the operator to visually observe the angle at which the column drives the valve core to rotate, thereby accurately controlling the degree of valve opening and avoiding insufficient or excessive valve opening or closing, thus improving the accuracy of operation.

[0014] 2. When the upper end of the cylinder is in contact with the top of the upper shell, the pressure relief hole is aligned with the groove, ensuring that the pressure medium can be discharged smoothly and avoiding the safety hazards caused by the accumulation of pressure medium inside the valve core. At the same time, the sliding of the vertical rod serves as a direct reminder that the valve core is depressurizing, so that the operator can know that the pressure relief operation is in progress without additional inspection or monitoring. Attached Figure Description

[0015] Figure 1 This is a front view of the external structure of a ball valve with a pressure relief mechanism proposed in this utility model.

[0016] Figure 2 This is a side view of the external structure of a ball valve with a pressure relief mechanism proposed in this utility model.

[0017] Figure 3 This is a top view of the external structure of a ball valve with a pressure relief mechanism proposed in this utility model.

[0018] Figure 4 This is a front cross-sectional view of a ball valve with a pressure relief mechanism proposed in this utility model.

[0019] Figure 5 This is a side sectional view of a ball valve with a pressure relief mechanism proposed in this utility model.

[0020] In the diagram: 001, housing; 101, top cover; 102, ring plate; 103, valve core; 104, hole; 002, column; 201, pointer head; 202, diagonal rod; 203, ring; 204, cylindrical column; 205, pressure relief hole; 206, upper shell; 207, slot; 208, screw; 209, circular plate; 210, vertical rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5A ball valve with a pressure relief mechanism includes a housing 001, with a top cover 101 fixedly connected to the upper end of the housing 001 via a flange. A valve core 103 is rotatably connected inside the housing 001, and a hole 104 is provided through the upper end of the valve core 103. A column 002 is rotatably disposed through the inner wall of the top cover 101, with its lower end fixedly connected to the upper end of the valve core 103. A cylindrical column 204 is slidably connected inside the column 002, and both sides of the cylindrical column 204 are provided with... A pressure relief hole 205 is provided. An upper shell 206 is fixedly connected to the upper end of the column 002. A screw 208 is threadedly connected to the upper end of the upper shell 206. The screw 208 is rotatably connected to the upper end of the cylinder 204. Grooves 207 are provided on both sides of the upper shell 206. A sealing ring is provided on the side wall of the cylinder 204. The operator connects the shell 001 to two external pipes. When it is necessary to open the internal passage of the shell 001, the column 002 drives the valve core 103 to rotate, opening the shell 001. 1. When the internal passage is opened, the pressure medium inside one pipe flows through the housing 001 and valve core 103 to the other pipe. At the same time, the pressure medium inside the valve core 103 flows through the hole 104 to the cylinder 204. When it is necessary to close the internal passage of the housing 001, the cylinder 002 drives the valve core 103 to rotate again at the original angle to close the internal passage of the housing 001. When it is necessary to release pressure after the internal passage of the housing 001 is closed, the screw 208 rotates and pulls the cylinder 204 upward. The sealing ring on the side wall of the cylinder 204 is tightly fitted with the inner wall of the cylinder 002 and the inner wall of the upper housing 206, until the upper end of the cylinder 204 is in contact with the top of the upper housing 206. At this time, the pressure relief hole 205 is aligned with the groove 207, and the pressure medium inside the valve core 103 is discharged through the hole 104, the cylinder 204, the pressure relief hole 205 and the groove 207, thereby releasing the pressure inside the valve core 103.

[0023] A ring plate 102 is fixedly connected to the side wall of the top cover 101. The side wall of the ring plate 102 is provided with scale lines. By providing scale lines on the side wall of the ring plate 102, the angle of rotation of the valve core 103 driven by the column 002 can be reflected.

[0024] A pointer head 201 is fixedly connected to the side wall of the column 002. The pointer head 201 cooperates with the scale line. The cooperation between the pointer head 201 and the scale line allows the operator to more intuitively observe the angle at which the column 002 drives the valve core 103 to rotate.

[0025] Multiple diagonal rods 202 are fixedly connected to the side wall of column 002. The multiple diagonal rods 202 are arranged in a circular array. The ends of the multiple diagonal rods 202 are fixedly connected to a ring 203. The operator manually rotates the ring 203, and the ring 203 drives the column 002 to rotate through the multiple diagonal rods 202.

[0026] A circular plate 209 is fixedly connected to the upper end of the screw 208. A hexagonal slot is provided on the upper end of the circular plate 209. The operator slides the end of the hexagonal wrench into the hexagonal slot on the upper end of the circular plate 209, and then rotates the hexagonal wrench, so that the circular plate 209 drives the screw 208 to rotate.

[0027] A vertical rod 210 is fixedly connected to the upper end of the cylinder 204. The vertical rod 210 is slidably connected to the upper end of the upper shell 206. When the cylinder 204 slides longitudinally, it is guided and limited by the vertical rod 210. At the same time, when the upper end of the cylinder 204 contacts and fits against the top of the upper shell 206, the vertical rod 210 slides out from the inside of the upper shell 206. The sliding vertical rod 210 reminds the personnel that the valve core 103 is depressurizing.

[0028] In this invention, the operator connects the housing 001 to two external pipes. When it is necessary to open the internal channel of the housing 001, the operator manually rotates the ring 203. The ring 203 drives the column 002 to rotate through multiple inclined rods 202. The column 002 drives the valve core 103 and the pointer head 201 to rotate, thereby opening the internal channel of the housing 001. The pressure medium inside one pipe flows through the housing 001 and the valve core 103 to the other pipe. At the same time, the pressure medium inside the valve core 103 flows through the hole 104 to the cylinder 204. When it is necessary to close the internal channel of the housing 001, the column 002 drives the valve core 103 and the pointer head 201 to rotate, closing the internal channel of the housing 001. During this process, the operator can intuitively observe the angle of rotation of the valve core 103 driven by the column 002 through the cooperation between the pointer head 201 and the scale line.

[0029] When pressure relief is needed after the housing 001 is closed, the operator slides the end of the hexagonal wrench into the hexagonal slot at the upper end of the circular plate 209, and then rotates the hexagonal wrench, causing the circular plate 209 to drive the screw 208 to rotate. At the same time, the screw 208 pulls the cylinder 204 to slide upward, and guides and limits it through the vertical rod 210 until the upper end of the cylinder 204 is in contact with the top of the upper housing 206. At this time, the pressure relief hole 205 is aligned with the groove 207, and the pressure medium inside the valve core 103 is discharged through the hole 104, cylinder 204, pressure relief hole 205 and groove 207, thereby relieving the pressure inside the valve core 103. At the same time, the vertical rod 210 slides out from inside the upper housing 206, and the sliding vertical rod 210 reminds the operator that the valve core 103 is being depressurized.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball valve with a pressure relief mechanism, characterized in that, include The housing (001) has a cover (101) fixedly connected to its upper end via a flange. A valve core (103) is rotatably connected inside the housing (001). A hole (104) is provided through the upper end of the valve core (103). A column (002) is rotatably mounted on the inner wall of the upper cover (101). The lower end of the column (002) is fixedly connected to the upper end of the valve core (103). A cylindrical column (204) is slidably connected inside the column (002). Pressure relief holes (205) are provided on both sides of the cylindrical column (204). An upper shell (206) is fixedly connected to the upper end of the column (002). A screw (208) is threadedly connected to the upper end of the upper shell (206). The screw (208) is rotatably connected to the upper end of the cylindrical column (204). A slot (207) is provided on both sides of the upper shell (206).

2. A ball valve with a pressure relief mechanism according to claim 1, characterized in that, The upper cover (101) is fixedly connected to a ring plate (102) on its side wall, and the ring plate (102) is provided with scale lines on its side wall.

3. A ball valve with a pressure relief mechanism according to claim 1, characterized in that, A pointer head (201) is fixedly connected to the side wall of the column (002), and the pointer head (201) cooperates with the scale line.

4. A ball valve with a pressure relief mechanism according to claim 1, characterized in that, The column (002) has multiple diagonal rods (202) fixedly connected to its side wall. The multiple diagonal rods (202) are arranged in a ring array, and the ends of the multiple diagonal rods (202) are fixedly connected to a ring (203).

5. A ball valve with a pressure relief mechanism according to claim 1, characterized in that, A circular plate (209) is fixedly connected to the upper end of the screw (208), and a hexagonal slot is provided on the upper end of the circular plate (209).

6. A ball valve with a pressure relief mechanism according to claim 1, characterized in that, A vertical rod (210) is fixedly connected to the upper end of the cylindrical column (204), and the vertical rod (210) is slidably connected to the upper end of the upper shell (206).

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