A three-way pressure gauge valve with pressure relief function

Abstract

The utility model relates to valve technical field, concretely discloses a three -way pressure gauge valve with pressure relief function, the three -way pressure gauge valve with pressure relief function includes: valve body, the inner wall of valve body is opened with seal groove, and the piston is slidably connected in seal groove, and the piston side surface is opened with pressure relief groove, and the pressure relief pipe is slidably connected with the piston surface, and the valve rod is screwd with valve body, and the valve is rotatably connected with valve rod, and the piston is elastically connected with valve, the beneficial effects of the utility model are: the force size of piston can be adjusted through the movement of valve, the pressure relief pipe on the piston surface can carry out pressure relief to connecting port no.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a three-way pressure gauge valve with pressure relief function. Background Technology

[0002] A three-way valve has three ports: one inlet and two outlets (left inlet, right outlet, and bottom outlet). Unlike ordinary valves, it has an outlet at the bottom. The outlets differ depending on the position of the internal valve core. For example, when the valve core is at the bottom, the left and right outlets are connected. When the valve core is at the top, the right outlet is blocked, while the left and bottom outlets are connected. This is because the left and right outlets are not on the same horizontal line.

[0003] In the existing technology, three-way valves are available in T-type and L-type. The T-type valve can connect three orthogonal pipes and disconnect the third channel, thus serving as a flow divider and merging valve. The L-type three-way valve can only connect two orthogonal pipes and cannot simultaneously maintain the connection of the third pipe; it only serves a distribution function. A pressure gauge is usually installed at one end of the three-way valve.

[0004] However, currently, three-way valves typically only have one valve inside, and the opening and closing state of the valve is adjusted by regulating the valve. When the pressure at one end is too high, it cannot automatically balance and relieve the pressure at both ends. Utility Model Content

[0005] The purpose of this invention is to provide a three-way pressure gauge valve with a pressure relief function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-way pressure gauge valve with pressure relief function, the three-way pressure gauge valve with pressure relief function includes: a valve body, a sealing groove is provided on the inner wall of the valve body, a piston is slidably connected in the sealing groove, a pressure relief groove is provided on the side of the piston, a pressure relief pipe is slidably connected to the surface of the piston, a valve stem is threadedly connected to the valve body, a valve is rotatably connected to the valve stem, and the piston and the valve are elastically connected.

[0007] Preferably, one end of the valve body has a connection port one, the other end of the valve body is threaded to a valve stem, one end of the surface of the valve body has a connection port two, and the other end of the surface of the valve body is detachably equipped with a pressure gauge, and the connection port two is in contact with the sealing groove.

[0008] One end of the valve stem is fixedly connected to a turntable, and the other end passes through the valve body and is rotatably connected to the valve. The valve is slidably connected to the inner wall of the valve body, and the valve stem has a hollow structure.

[0009] Preferably, the piston has several pressure relief grooves on its side, the side of the piston is slidably connected to the sealing groove, one end of the piston is fixedly connected to a guide rod, the other end of the guide rod passes through the valve and is slidably connected to the inner wall of the valve stem, a spring is sleeved on the surface of the valve stem, a spring is sleeved on the surface of the spring, one end of the spring is fixedly connected to the piston, and the other end of the spring is fixedly connected to the valve.

[0010] Preferably, the piston is concave on the side away from the valve, and several pressure relief pipes are slidably connected to the surface of the piston. The width of the piston is smaller than that of the valve, and the width of the valve is larger than the diameter of the second connection port.

[0011] Preferably, one end of each of the pressure relief pipes is provided with a through hole, the other end of the through hole penetrates the surface of the pressure relief pipe, and the end of the pressure relief pipe away from the valve passes through the piston and is fixedly connected to a limit plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the force on the piston can be adjusted by moving the valve, the pressure relief pipe on the piston surface can relieve pressure on the first connection port, and the pressure relief groove can relieve pressure on the second connection port, so that the pressure on both sides of the piston will not be too large. The device is easy to use and can automatically relieve pressure, thus avoiding the situation of excessive pressure on one side. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the valve body of this utility model; Figure 3 This is a three-dimensional schematic diagram of the valve stem of this utility model; Figure 4 This is a side view of the valve stem of this utility model; Figure 5 This is a cross-sectional view of the valve stem of this utility model.

[0014] In the diagram: 1. Valve body; 2. Connection port one; 3. Connection port two; 4. Pressure gauge; 5. Valve stem; 6. Rotary disc; 7. Valve; 8. Guide rod; 9. Piston; 10. Pressure relief groove; 11. Spring; 12. Pressure relief pipe; 13. Through hole; 14. Limiting disc; 15. Sealing groove. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-5 This utility model provides a technical solution: a three-way pressure gauge valve with pressure relief function, comprising: a valve body 1, one end of the valve body 1 having a connection port 2, the other end of the valve body 1 being threadedly connected to a valve stem 5, through which a valve 7 can be moved, one end of the surface of the valve body 1 having a connection port 3, and the other end of the surface of the valve body 1 being detachably mounted with a pressure gauge 4, the pressure gauge 4 being able to monitor the pressure inside the valve body 1 in real time, and being able to connect to the pipelines of other devices through the connection port 2 and the connection port 3, the connection port 3 contacting a sealing groove 15, the sealing groove 15 being able to limit and guide the movement of a piston 9, and the piston 9 being able to cut off the connection port 2 and the connection port 3.

[0017] Pressure gauge 4 is installed on the surface of valve body 1 with a fixing nut to detect the internal pressure of valve body 1. Connect port 1 2 and port 2 3 to other devices via a flange, and then move piston 9 to start operation.

[0018] One end of the valve stem 5 is fixedly connected to a turntable 6. Rotating the valve stem 5 via the turntable 6 allows the other end of the valve stem 5 to pass through the valve body 1 and rotate with the valve 7 via an interference fit bearing. When the valve stem 5 rotates, the valve 7 slides along the inner wall of the valve body 1, forming a sealed sliding connection between the valve 7 and the inner wall of the valve body 1. The valve stem 5 has a hollow structure. Several pressure relief grooves 10 are provided on the side of the piston 9. These grooves prevent excessive pressure at the connection port 2. The side of the piston 9 is slidably connected to the sealing groove 15. The piston 9 can be guided and limited in its sliding motion. One end of the piston 9 is fixedly connected to a guide rod 8, and the other end of the guide rod 8 passes through the valve 7 and is slidably connected to the inner wall of the valve stem 5. A spring 11 is sleeved on the surface of the valve stem 5, and pressure can be applied to the piston 9 through the spring 11. One end of the spring 11 is fixedly connected to the piston 9, and the other end of the spring 11 is fixedly connected to the valve 7. When the position of the valve 7 changes, the extension and contraction of the spring 11 changes, thereby changing the pressure of the piston 9.

[0019] After the overall connection is completed, the valve stem 5 can be rotated by rotating the turntable 6. At this time, the valve 7 begins to slide under the push of the valve stem 5. During this process, the valve 7 will compress the spring 11. The elastic force of the spring 11 can force the piston 9 to start sliding along the sealing groove 15. When the piston 9 moves to the end of the sealing groove 15 and can no longer slide, the valve stem 5 can be rotated to further increase the pressure and compression of the spring 11, thereby increasing the bearing capacity of the piston 9.

[0020] The side of piston 9 away from valve 7 is concave, which increases the contact area and improves the accuracy of piston 11. Several pressure relief pipes 12 are slidably connected to the surface of piston 9. The surface of pressure relief pipe 12 is equipped with an elastic rod, which facilitates the reset of pressure relief pipe 12 and the pressure relief pipe 12 facilitates pressure relief to connection port 2 3. The width of piston 9 is smaller than that of valve 7, and the width of valve 7 is larger than the diameter of connection port 2 3, so as to ensure that valve 7 can block connection port 2 3. One end of several pressure relief pipes 12 has a through hole 13, and the other end of the through hole 13 penetrates the surface of pressure relief pipe 12. The end of pressure relief pipe 12 away from valve 7 passes through piston 9 and is fixedly connected to limit plate 14. When pressure relief pipe 12 slides, it can change the blocking state of through hole 13.

[0021] When the pressure at connection port 23 is too high, the pressure in the sealing groove 15 increases, and the pressure relief pipe 12 is subjected to increased force. At this time, under the action of pressure, the pressure relief pipe 12 begins to slide towards connection port 12, while compressing the elastic rod. Then, when the piston 11 at the end of the pressure relief pipe 12 contacts, the through hole 13 is unblocked. At this time, the space on both sides of the piston 9 can be interconnected through the through hole 13, thereby relieving pressure at connection port 23, so that the pressure at both ends gradually tends to be balanced. After the balance is achieved, the pressure relief pipe 12 is reset under the action of the elastic rod, and the through hole 13 is blocked.

[0022] In actual use, rotating valve stem 5 moves valve 7, compressing spring 11. The spring force of spring 11 causes piston 9 to move along sealing groove 15 and eventually isolate connection port 2 and connection port 3. When the pressure at connection port 2 is greater than the spring force of spring 11, piston 9 moves toward valve 7. At this time, under the action of pressure relief groove 10, connection port 2 and connection port 3 are connected to relieve pressure. When it is necessary to completely separate connection port 2 and connection port 3, valve 7 is continuously moved to block connection port 3. At this time, connection port 2 and connection port 3 are completely isolated. Through piston 9 and pressure relief pipe 12, pressure balance at both ends and automatic pressure relief can be achieved to avoid excessive pressure at connection port 2 or connection port 3.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-way pressure gauge valve with pressure relief function, characterized in that: The three-way pressure gauge valve with pressure relief function includes: a valve body (1), a sealing groove (15) is provided on the inner wall of the valve body (1), a piston (9) is slidably connected in the sealing groove (15), a pressure relief groove (10) is provided on the side of the piston (9), a pressure relief pipe (12) is slidably connected to the surface of the piston (9), a valve stem (5) is threadedly connected to the valve body (1), a valve (7) is rotatably connected to the valve stem (5), and the piston (9) and the valve (7) are elastically connected.

2. The pressure relief function three-way pressure gauge valve according to claim 1, characterized in that: One end of the valve body (1) is provided with a connection port 1 (2), and the other end of the valve body (1) is threadedly connected to a valve stem (5). One end of the surface of the valve body (1) is provided with a connection port 2 (3), and the other end of the surface of the valve body (1) is detachably equipped with a pressure gauge (4). The connection port 2 (3) is in contact with the sealing groove (15).

3. The pressure relief function three-way valve pressure gauge according to claim 1, characterized in that: One end of the valve stem (5) is fixedly connected to a turntable (6), and the other end passes through the valve body (1) and is rotatably connected to the valve (7). The valve (7) is slidably connected to the inner wall of the valve body (1) in a sealed manner. The valve stem (5) has a hollow structure.

4. The pressure relief three-way valve pressure gauge according to claim 1, characterized in that: The piston (9) has several pressure relief grooves (10) on its side. The side of the piston (9) is slidably connected to the sealing groove (15). One end of the piston (9) is fixedly connected to a guide rod (8). The other end of the guide rod (8) passes through the valve (7) and is slidably connected to the inner wall of the valve stem (5). A spring (11) is sleeved on the surface of the valve stem (5). A spring (11) is sleeved on the surface of the spring (11). One end of the spring (11) is fixedly connected to the piston (9), and the other end of the spring (11) is fixedly connected to the valve (7).

5. The pressure relief three-way valve pressure gauge according to claim 1, characterized in that: The piston (9) is concave on the side away from the valve (7). Several pressure relief pipes (12) are slidably connected to the surface of the piston (9). The width of the piston (9) is smaller than that of the valve (7), and the width of the valve (7) is larger than the diameter of the connection port (3).

6. The pressure relief three-way valve pressure gauge according to claim 1, characterized in that: One end of several pressure relief pipes (12) is provided with a through hole (13), and the other end of the through hole (13) penetrates the surface of the pressure relief pipe (12). The end of the pressure relief pipe (12) away from the valve (7) passes through the piston (9) and is fixedly connected to the limit plate (14).

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