CN210484633U

CN210484633U - Pressure reducing valve

Info

Publication number: CN210484633U
Application number: CN201921189009.6U
Authority: CN
Inventors: ***
Original assignee: Ningbo Hongte Industry & Trade Co ltd
Current assignee: Ningbo Hongte Industry & Trade Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-08
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a pressure reducing valve, including the valve body, be equipped with valve pocket, pressure regulating chamber, partition component, piston and case in the valve body, the piston top is equipped with the pressure regulating subassembly, the piston with separate and form between the component pressure regulating chamber is equipped with the intercommunicating pore that is used for intercommunication valve pocket and pressure regulating chamber on separating the component, is equipped with the little spring in the below of case, and the case is used for controlling the switching of intercommunicating pore, is equipped with the air inlet of intercommunication valve pocket and the gas outlet in intercommunication pressure regulating chamber in the valve body outside, and the case includes integrated copper main part and valve rod, and the copper main part is located in the valve pocket and the joint has the rubber pad, rubber pad and partition component looks butt, and the valve rod passes. The utility model discloses at the case through the copper product that sets up the integration, solved the yielding shortcoming of current rubber relief pressure valve case long-term use, through the rubber blanket of joint on the case, convenient to detach changes after the rubber blanket wearing and tearing, has improved the life of relief pressure valve.

Description

Pressure reducing valve

Technical Field

The utility model relates to a valve class technical field, especially relief pressure valve.

Background

The valve core of the existing pressure regulating valve is mostly made of rubber materials, the deformation is easy to occur after the valve core is used for a long time, the pressure regulating effect of the pressure regulating valve is influenced, in addition, the contact surface of the valve core and a separation member is easy to wear, the sealing performance is reduced, in order to guarantee the using effect of the pressure reducing valve, the whole valve core is required to be replaced usually, the cost is high, and the service life of the pressure reducing valve is short.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned prior art not enough and provide a relief pressure valve, the case of this relief pressure valve is non-deformable in long-term use, through the rubber pad of joint in the copper main part, after the rubber pad wearing and tearing change can, need not change whole case, save material has improved the life of relief pressure valve.

In order to achieve the purpose, the pressure reducing valve designed by the utility model comprises a valve body, a valve cavity, a pressure regulating cavity, a separating component, a piston and a valve core are arranged in the valve body, the separating component is used for separating the valve cavity and the pressure regulating cavity, the pressure regulating component is arranged above the piston, the pressure regulating cavity is formed between the piston and the separating component, the partition member is provided with a communicating hole for communicating the valve cavity and the pressure regulating cavity, a small spring is arranged below the valve core, the valve core is used for controlling the opening and closing of the communicating hole, the outer side of the valve body is provided with an air inlet communicated with the valve cavity and an air outlet communicated with the pressure regulating cavity, the valve core comprises an integrated copper main body and a valve rod, the copper main body is arranged in the valve cavity and is provided with a clamping groove, the clamping groove is internally clamped with a rubber pad which is abutted against the separating component, and the valve rod penetrates through the communicating hole and then is connected with the piston.

Be equipped with on the valve rod with valve rod integrated into one piece's protruding structure, form first draw-in groove between protruding structure and the copper main part, be equipped with the second draw-in groove at the side of copper main part, the rubber pad passes through first draw-in groove and second draw-in groove joint in the copper main part.

The pressure regulating assembly comprises a knob, a screw rod, a large spring and a spring positioning nut, the knob is arranged above the valve body, one end of the screw rod is connected with the knob, the other end of the screw rod extends into the valve body, the spring positioning nut is screwed on one end of the screw rod extending into the valve body, the upper end of the large spring is abutted with the spring positioning nut, and the lower end of the large spring is abutted with the piston.

The bottom of the valve body is provided with a valve core positioning screw, the copper main body of the valve core is sleeved outside the valve core positioning screw, and the small spring is arranged between the valve core and the valve core positioning screw.

In order to improve the sealing performance of the communicating hole when the copper main body and the separating component are abutted against each other, an annular bulge taking the communicating hole as the center is arranged on the separating component, and a groove matched with the annular bulge is arranged on the rubber pad.

The utility model discloses the relief pressure valve that obtains, its technical effect is the case that replaces current rubber material through the case that sets up the copper product of integration, has solved the long-term yielding shortcoming of using of current relief pressure valve case, through the rubber blanket that sets up the joint in the copper main part of case, and not only sealing performance is good, and rubber blanket convenient to detach changes, has improved the life of relief pressure valve.

Drawings

FIG. 1 is a schematic structural view of a pressure reducing valve of embodiment 1;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of FIG. 2 without the rubber mat installed;

FIG. 4 is a schematic structural view of a pressure reducing valve of embodiment 2;

fig. 5 is an enlarged view at B in fig. 4.

In the figure: the valve comprises a valve body 1, a valve cavity 2, a pressure regulating cavity 3, a separating member 4, a piston 5, a valve core 6, a communicating hole 7, a small spring 8, an air inlet 9, an air outlet 10, a copper main body 11, a valve rod 12, a rubber pad 14, a knob 15, a screw 16, a large spring 17, a spring positioning nut 18, a valve core positioning screw 19, an annular bulge 20, a first sealing O ring 21, a second sealing O ring 22, a third sealing O ring 23, a fourth sealing O ring 24, a Y-shaped sealing ring 25, a bulge structure 26, a first clamping groove 27 and a second clamping groove 28.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1-3, the pressure reducing valve provided in this embodiment includes a valve body 1, a valve cavity 2, a pressure regulating cavity 3, a partition member 4, a piston 5 and a valve core 6 are provided in the valve body 1, the partition member 4 is used for partitioning the valve cavity 2 and the pressure regulating cavity 3, a pressure regulating assembly is provided above the piston 5, the pressure regulating cavity 3 is formed between the piston 5 and the partition member 4, a communication hole 7 for communicating the valve cavity 2 and the pressure regulating cavity 3 is provided on the partition member 4, a small spring 8 is provided below the valve core 6, the valve core 6 is used for controlling the opening and closing of the communication hole 7, an air inlet 9 for communicating the valve cavity 2 and an air outlet 10 for communicating the pressure regulating cavity 3 are provided outside the valve body 1, the valve core 6 includes an integrated copper main body 11 and a valve rod 12, the copper main body 11 is provided in the valve cavity 2, and a rubber pad 14 is clamped above the copper main body 11, the rubber pad 14 moves away from and close to the partition member 4 with the up and down movement of the valve body 6 for controlling the opening and closing of the communication hole 7, and the valve rod 12 passes through the communication hole 7 and is connected to the piston 5.

Be equipped with on valve rod 12 with valve rod 12 integrated into one piece's protruding structure 26, form first draw-in groove 27 between protruding structure 26 and the copper main part 11, be equipped with second draw-in groove 28 at the side of copper main part 11, rubber pad 14 is through first draw-in groove 27 and the 28 joint of second draw-in groove on copper main part 11, through the setting of twice draw-in groove, rubber pad 14's fixed more firm, and better with the sealing performance between the copper main part 11.

The pressure regulating subassembly includes knob 15, screw rod 16, big spring 17, spring set nut 18, knob 15 is established in 1 top of valve body, 16 one ends of screw rod are connected with knob 15, and the other end stretches into in the valve body 1, spring set nut 18 connects soon and is served at screw rod 16 one that stretches into

valve body

1, 17 upper ends of big spring and 18 apical grafting of spring set nut, the lower extreme and 5 apical grafting of piston.

The bottom of the valve body 1 is provided with a valve core positioning screw 19, the copper main body 11 of the valve core 6 is sleeved outside the valve core positioning screw 19, and the small spring 8 is arranged between the valve core 6 and the valve core positioning screw 19.

In order to ensure the sealing performance of the pressure reducing valve, a first sealing O-ring 21 is arranged between the valve core positioning screw 19 and the valve body 1, a second sealing O-ring 22 is arranged between the valve core positioning screw 19 and the valve core 6, a third sealing O-ring 23 is arranged at the bottom of the piston 5, a fourth sealing O-ring 24 is arranged at the joint of the valve core 6 and the piston 5, a Y-shaped sealing ring 25 is arranged at the side edge of the piston 5, the sealing rings are arranged to ensure the integral sealing performance of the pressure reducing valve, the arrangement of the sealing rings at each position belongs to a conventional technical means in the technical field, and is not specifically described here.

The specific working principle is as follows: the knob 15 is rotated to drive the spring positioning nut 18 to move downwards, (as the pressure regulating assembly belongs to the prior art, the rotation of the knob 15 drives the spring positioning nut 18 to move downwards, which is a conventional technical means and is not specifically described), the piston 5 and the valve core 6 are pushed to compress downwards after the large spring 17 is compressed, so that the rubber gasket 14 is contacted and separated with the separation member 4, high-pressure gas enters the valve cavity 2 from the gas inlet 9 and then enters the pressure regulating cavity 3 through the communication hole 7 to be decompressed and then exits from the gas outlet 10, and the decompression principle of the gas in the pressure regulating cavity 3 (the decompression principle related to the decompression principle belongs to the conventional technology in the technical field) is that due to the compression of the large spring 17, a part of pressure of the gas entering the pressure regulating cavity 3 and the elastic action of the piston 5 form an interaction force, so that the effect of decompressing the gas is realized.

Through the relief pressure valve that above-mentioned embodiment obtained, long-term use in-process, 6 non-deformable of case, through joint detachable rubber mat 14, only need after 14 wearing and tearing of rubber mat change can to rubber mat 14, guaranteed the life of whole relief pressure valve.

Example 2:

as shown in fig. 4 to 5, the pressure reducing valve according to the present embodiment has the same general structure as that of embodiment 1, but in order to improve the sealing performance of the communicating hole 7 when the copper body 11 abuts against the partition member 4, the partition member 4 is provided with an annular projection 20 centering on the communicating hole 7, and the rubber gasket 14 is provided with a groove fitted with the annular projection 20.

Claims

1. The utility model provides a pressure reducing valve, includes valve body (1), is equipped with valve pocket (2), pressure regulating chamber (3), separates component (4), piston (5) and case (6) in valve body (1), it is used for separating valve pocket (2) and pressure regulating chamber (3) to separate component (4), piston (5) top is equipped with the pressure regulating subassembly, piston (5) with separate and form between component (4) pressure regulating chamber (3) are equipped with intercommunicating pore (7) that are used for intercommunication valve pocket (2) and pressure regulating chamber (3) on separating component (4), are equipped with little spring (8) in the below of case (6), case (6) are used for controlling the switching of intercommunicating pore (7), are equipped with air inlet (9) and the gas outlet (10) of intercommunication pressure regulating chamber (3) of intercommunication valve pocket (2) in valve body (1) outside, its characterized in that: the valve core (6) comprises an integrated copper main body (11) and a valve rod (12), the copper main body (11) is arranged in the valve cavity (2) and a rubber pad (14) is clamped at the upper end of the copper main body (11), the rubber pad (14) is abutted to the partition member (4), and the valve rod (12) penetrates through the communicating hole (7) and then is connected with the piston (5).

2. The pressure reducing valve according to claim 1, wherein: be equipped with protruding structure (26) with valve rod (12) integrated into one piece on valve rod (12), form first draw-in groove (27) between protruding structure (26) and copper main part (11), be equipped with second draw-in groove (28) at the side of copper main part (11), rubber pad (14) are through first draw-in groove (27) and second draw-in groove (28) joint on copper main part (11).

3. The pressure reducing valve according to claim 1, wherein: the pressure regulating assembly comprises a knob (15), a screw rod (16), a large spring (17) and a spring positioning nut (18), the knob (15) is arranged above the valve body (1), one end of the screw rod (16) is connected with the knob (15), the other end of the screw rod stretches into the valve body (1), the spring positioning nut (18) is screwed on one end of the screw rod (16) stretching into the valve body (1), the upper end of the large spring (17) is abutted to the spring positioning nut (18), and the lower end of the large spring is abutted to the piston (5).

4. The pressure reducing valve according to claim 1, wherein: the bottom of the valve body (1) is provided with a valve core positioning screw (19), a copper main body (11) of the valve core (6) is sleeved outside the valve core positioning screw (19), and the small spring (8) is arranged between the valve core (6) and the valve core positioning screw (19).

5. The pressure reducing valve according to claim 1, wherein: an annular protrusion (20) centering on the communication hole (7) is provided on the partition member (4), and a groove to be fitted with the annular protrusion (20) is provided on the rubber pad (14).