High-pressure cartridge overflow valve

Abstract

The utility model discloses a high-pressure plug-in mounting type overflow valve, which relates to the technical field of overflow valves, and comprises a valve body, a liquid inlet is arranged at the bottom of a valve seat, a liquid outlet is arranged on the surface of the valve body, a stable pressure relief assembly comprises a positioning rod, the positioning rod is arranged on one side of a pressing block, one end of the positioning rod is in sliding connection with a sliding rod, and the sliding rod is connected with the valve seat. One end of the sliding rod is fixedly connected to the surface of the valve element, and a second spring is fixedly connected between the valve element and the pressing block. The adjusting block is rotated to drive the pressing block to move along the valve body, the pressing block extrudes the first spring to adjust the pressure needed for ejecting the valve element open, the positioning rod and the sliding rod are arranged, sliding of the pressing block is guaranteed to be stable and cannot rotate, and therefore when the valve element makes contact with the valve seat, friction caused by rotation is avoided, and abrasion is reduced; a plurality of groups of second springs are arranged to increase the contact area between the second springs and the valve core, so that the stress of the valve core is more uniform, and the stability of the valve core is better ensured during pressure relief.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valves, in particular to a high-pressure plug-in overflow valve. Background Art

[0002] In devices using fluids, for safety purposes, there is a requirement to reduce the fluid pressure to below a specified value when it exceeds a specified value. As one of the means to reduce the fluid pressure to below the specified value, a relief valve is installed on the device. The relief valve is a safety device used in the system to discharge the pressure exceeding the specified value to ensure that the system does not cause accidents due to excessive pressure. It is widely used in urban construction, chemical industry, metallurgy, and other fields.

[0003] Most of the existing high-pressure relief valves directly connect the relief valve core to the adjusting spring. Under long-term high-pressure working environment, when the relief valve core and the adjusting spring are directly connected and the force area is small, it will cause great damage to the adjusting spring and the relief valve core. The main components of the relief valve are the relief valve core and the adjusting spring, which will affect its working efficiency and service life. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a high-pressure cartridge relief valve, which solves the problem that when the relief valve core and the regulating spring are directly connected, the force bearing area is small, which will cause great damage to the regulating spring and the relief valve core.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-pressure cartridge relief valve, comprising: a valve body, a valve seat is fixedly installed at the bottom of the valve body, a liquid inlet is opened at the bottom of the valve seat, a liquid outlet is opened on the surface of the valve body, a valve core is arranged in the valve body, a first spring is arranged on the side of the valve core away from the valve seat, a pressure block is arranged on the end of the first spring away from the valve core, the pressure block is slidably connected to the valve body, a threaded rod is threadedly connected to the top of the valve body, one end of the threaded rod is rotatably connected to one side of the pressure block, and a stable pressure relief component is arranged on the pressure block;

[0008] The stable pressure relief assembly includes a positioning rod, which is arranged on the side of the pressure block facing the valve core. The end of the positioning rod away from the pressure block is slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to the surface of the valve core, and a second spring is connected between the valve core and the pressure block.

[0009] Preferably, a plurality of positioning rods are provided, and the plurality of positioning rods are circumferentially arrayed on one side of the pressing block. One end of the second spring is fixedly connected to the pressing block, and the other end of the second spring is fixedly connected to the valve core.

[0010] Preferably, guide strips are circumferentially arrayed on the surface of the valve core, and rounded corners are formed on the surface of the guide strips.

[0011] Preferably, a sealing ring is fixedly connected to the surface of the valve core, a trapezoidal hole is formed in the valve seat, and a diversion groove is formed in the trapezoidal hole.

[0012] Preferably, the diversion groove matches the shape of the guide strip, and the inner wall shape of the trapezoidal hole matches the outer wall shape of the valve core.

[0013] Preferably, the valve core is trapezoidally arranged, and the sealing ring is concentric with the valve seat.

[0014] Preferably, electrophoretic anti-corrosion layers are provided on the surfaces of the second spring and the first spring.

[0015] Beneficial effects

[0016] The utility model provides a high-pressure cartridge-type overflow valve, which has at least the following beneficial effects compared with the prior art:

[0017] Rotate the adjusting block, so that the adjusting block drives the pressing block to move along the valve body. The first spring is squeezed by the pressing block to adjust the pressure required to push open the valve core. The positioning rod and the sliding rod are provided to ensure the stability of the sliding of the pressing block and prevent it from rotating, so that when the valve core contacts the valve seat, it will not rotate and cause friction, reducing wear. Multiple groups of second springs are provided to increase the contact area between the second spring and the valve core, so that the force on the valve core is more uniform, and the stability of the valve core is better guaranteed during pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the utility model;

[0019] Figure 2 is a schematic sectional structural diagram of the utility model;

[0020] Figure 3 is a schematic structural diagram of the interior of the valve body of the utility model;

[0021] Figure 4 is a schematic structural diagram of the valve seat of the utility model.

[0022] In the figure: 1, valve body; 2, liquid inlet; 3, liquid outlet; 4, valve seat; 5, valve core; 6, first spring; 7, pressing block; 8, threaded rod; 9, locking nut; 10, adjusting block; 11, stable pressure relief component; 1101, positioning rod; 1102, sliding rod; 1103, second spring; 1105, sealing ring; 1106, guiding strip; 1107, guiding groove; 12, trapezoidal hole. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] Please refer to Figures 1-4 , the present invention provides a technical solution: a valve body 1, a valve seat 4 is fixedly installed at the bottom of the valve body 1, a liquid inlet 2 is opened at the bottom of the valve seat 4, a liquid outlet 3 is opened on the surface of the valve body 1, a valve core 5 is arranged in the valve body 1, a first spring 6 is arranged on the side of the valve core 5 away from the valve seat 4, a pressing block 7 is arranged at the end of the first spring 6 away from the valve core 5, the pressing block 7 is slidably connected in the valve body 1, a threaded rod 8 is threadedly connected to the top of the valve body 1, one end of the threaded rod 8 is rotatably connected to one side of the pressing block 7, and a stable pressure relief component 11 is arranged on the pressing block 7; the stable pressure relief component 11 includes a positioning rod 1101, the positioning rod 1101 is arranged on the side of the pressing block 7 facing the valve core 5, a sliding rod 1102 is slidably connected to the end of the positioning rod 1101 away from the pressing block 7, one end of the sliding rod 1102 is fixedly connected to the surface of the valve core 5, and a second spring 1103 is connected between the valve core 5 and the pressing block 7. A locking nut 9 is arranged on the surface of the threaded rod 8.

[0026] Analysis of the above content: Rotate the adjusting block 10 so that the adjusting block 10 drives the pressing block 7 to move along the valve body 1, and the first spring 6 is compressed by the pressing block 7 to adjust the pressure required to push open the valve core 5. The positioning rod 1101 and the sliding rod 1102 are arranged to ensure the stability of the sliding of the pressing block 7 and prevent it from rotating, so that when the valve core 5 contacts the valve seat 4, it will not rotate and cause friction, reducing wear. Multiple groups of second springs 1103 are arranged to increase the contact area between the second springs 1103 and the valve core 5, so that the force on the valve core 5 is more uniform, and when relieving pressure, the stability of the valve core 5 is better guaranteed.

[0027] Embodiment 2:

[0028] Please refer to Figures 1-4, the present utility model provides a technical solution based on Embodiment 1: A plurality of positioning rods (1101) are provided, and the plurality of positioning rods 1101 are circumferentially arrayed on one side of the pressing block 7. One end of the second spring 1103 is fixedly connected to the pressing block 7, and the other end of the second spring 1103 is fixedly connected to the valve core 5. Electrostatic electrophoresis anti-corrosion layers are provided on the surfaces of both the second spring 1103 and the first spring 6.

[0029] Analysis of the above content: Electrostatic electrophoresis anti-corrosion layers are provided on the surfaces of both the second spring 1103 and the first spring 6 to improve the service life of the second spring 1103 and the first spring 6. A plurality of groups of positioning rods 1101 and sliding rods 1102 are provided to ensure the stability of the valve core 5 during movement, increase the contact area between the second spring 1103 and the valve core 5, and make the force more uniform.

[0030] Embodiment 3:

[0031] Please refer to Figures 1-4 , the present utility model provides a technical solution based on Embodiment 1: Flow guiding strips 1106 are circumferentially arrayed on the surface of the valve core 5, and rounded corners are provided on the surfaces of the flow guiding strips 1106.

[0032] Analysis of the above content: When relieving pressure, the flow guiding strips 1106 are provided to guide the liquid. They are symmetrically arranged to reduce vibration, and the rounded corners are provided to facilitate the flow of the liquid.

[0033] Embodiment 4:

[0034] Please refer to Figures 1-4 , the present utility model provides a technical solution based on Embodiment 1: A sealing ring 1105 is fixedly connected to the surface of the valve core 5, a trapezoidal hole 12 is provided on the valve seat 4, and a flow guiding groove 1107 is provided in the trapezoidal hole 12.

[0035] Analysis of the above content: The sealing ring 1105 is provided to improve the sealing performance between the valve core 5 and the valve seat 4, and the flow guiding groove 1107 is provided to guide the liquid, so that the liquid is dispersed and flows into the valve body 1 to reduce whistling.

[0036] Embodiment 5:

[0037] Please refer to Figures 1-4 , the present utility model provides a technical solution based on Embodiment 1: The flow guiding groove 1107 is matched with the shape of the flow guiding strip 1106, and the inner wall shape of the trapezoidal hole 12 is matched with the outer wall shape of the valve core 5.

[0038] Analysis of the above content: The flow guiding strip 1106 is inserted into the flow guiding groove 1107 to seal between the valve seat 4 and the valve core 5. When the set pressure is reached, the valve core 5 is lifted to relieve pressure.

[0039] Embodiment 6:

[0040] Please refer to Figures 1-4, the present utility model provides a technical solution based on Embodiment 1: The valve core 5 is trapezoidally arranged, and the sealing ring 1105 is concentrically arranged with the valve seat 4.

[0041] Analysis of the above content: The trapezoidal arrangement of the valve core 5 fits better with the trapezoidal hole 12 and cooperates with the sealing ring 1105 to improve the sealing performance.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-pressure cartridge overflow valve, characterized in that, Including: A valve body (1), a valve seat (4) is fixedly installed at the bottom of the valve body (1), a liquid inlet (2) is opened at the bottom of the valve seat (4), a liquid outlet (3) is opened on the surface of the valve body (1), a valve core (5) is arranged inside the valve body (1), a first spring (6) is arranged on the side of the valve core (5) away from the valve seat (4), a pressing block (7) is arranged at one end of the first spring (6) away from the valve core (5), the pressing block (7) is slidably connected inside the valve body (1), a threaded rod (8) is threadedly connected to the top of the valve body (1), one end of the threaded rod (8) is rotatably connected to one side of the pressing block (7), and a stable pressure relief assembly (11) is arranged on the pressing block (7); The stable pressure relief assembly (11) includes a positioning rod (1101), the positioning rod (1101) is arranged on the side of the pressing block (7) facing the valve core (5), a sliding rod (1102) is slidably connected to one end of the positioning rod (1101) away from the pressing block (7), one end of the sliding rod (1102) is fixedly connected to the surface of the valve core (5), and a second spring (1103) is connected between the valve core (5) and the pressing block (7).

2. The high-pressure cartridge overflow valve according to claim 1, characterized in that: A plurality of the positioning rods (1101) are arranged, and the plurality of positioning rods (1101) are circumferentially arrayed on one side of the pressing block (7), one end of the second spring (1103) is fixedly connected to the pressing block (7), and the other end of the second spring (1103) is fixedly connected to the valve core (5).

3. The high-pressure cartridge overflow valve according to claim 1, wherein: Flow guiding strips (1106) are circumferentially arrayed on the surface of the valve core (5), and rounded corners are opened on the surfaces of the flow guiding strips (1106).

4. The high-pressure cartridge overflow valve according to claim 3, characterized in that: A sealing ring (1105) is fixedly connected to the surface of the valve core (5), a trapezoidal hole (12) is opened on the valve seat (4), and a flow guiding groove (1107) is opened in the trapezoidal hole (12).

5. The high-pressure cartridge-type overflow valve according to claim 4, wherein: The flow guiding groove (1107) is matched with the flow guiding strip (1106) in shape, and the inner wall shape of the trapezoidal hole (12) is matched with the outer wall shape of the valve core (5).

6. The high-pressure cartridge-type overflow valve according to claim 4, characterized in that: The valve core (5) is trapezoidally arranged, and the sealing ring (1105) is concentric with the valve seat (4).

7. The high-pressure cartridge-type overflow valve according to claim 1, wherein: Electrophoretic anticorrosion layers are arranged on the surfaces of the second spring (1103) and the first spring (6).

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