CN221443431U

CN221443431U - Sealed anti-blocking pressure release valve

Info

Publication number: CN221443431U
Application number: CN202323289576.8U
Authority: CN
Inventors: 马军; 马良柱
Original assignee: Suqian Jinchu Spraying Equipment Co ltd
Current assignee: Suqian Jinchu Spraying Equipment Co ltd
Priority date: 2023-12-04
Filing date: 2023-12-04
Publication date: 2024-07-30
Anticipated expiration: 2033-12-04

Abstract

The utility model discloses a sealing anti-blocking pressure release valve, which comprises an adjusting knob, a valve body positioned below the adjusting knob and a push rod accommodated in the valve body, wherein an accommodating cavity which is penetrated from front to back is arranged in the valve body; the beneficial effects of the utility model are as follows: the sealing effect of the pressure release valve during high-pressure aggregation is improved, and in addition, the filter which is convenient and quick and easy to replace is adopted to ensure that the valve body smoothly runs and is not easy to block, so that the airless spraying machine can normally run.

Description

Sealed anti-blocking pressure release valve

Technical Field

The utility model belongs to the technical field of pressure relief valves, and particularly relates to a sealed anti-blocking pressure relief valve.

Background

The pressure relief valve is a safety protection device, and is generally used for controlling the pressure in a hydraulic system so as to ensure that the system is not damaged or exploded due to the excessive pressure, and the pressure relief valve is mainly used for maintaining a constant pressure in the hydraulic system so as to prevent the excessive pressure of the system, and automatically opening the pressure relief valve when the pressure in equipment or a pipeline exceeds the set pressure of the pressure relief valve, so that the pressure of medium in the equipment and the pipeline is ensured to be lower than the set pressure, and the equipment and the pipeline are protected from accidents.

The traditional relief valve adopts and uses as the relief valve quick-opening ball valve, and sealed effect is poor when this relief valve high pressure gathers, influences high pressure spraying effect, exists external environment comparatively abominable in addition, causes the through-hole to block, can't normally quick pressure release when the pressure release, and the material in equipment or the pipeline has particulate matter or impurity in addition, and during the pressure release, particulate matter or impurity can get into case and relief hole department and card here, and the case can't shutoff relief hole completely after the pressure release is accomplished, causes the relief valve to have the leakage condition.

Disclosure of utility model

The utility model aims to solve the problems that the sealing effect is poor and the inside of a valve body is blocked smoothly when the traditional pressure relief valve gathers at high pressure, so that the high-pressure spraying effect is affected and the like.

The utility model realizes the above purpose through the following technical scheme: the utility model provides a sealed relief valve of preventing blockking up, include adjust knob, be located the valve body of adjust knob below and hold the ejector pin in the valve body, be equipped with the holding chamber that link up from front end face is concave in the valve body, adjust knob be equipped with from the depressed accommodation portion of preceding terminal surface, the valve body rear end with accommodation portion passes through screw thread zonulae occludens, adjust knob with install the spring between the ejector pin, the shutoff part is installed to the ejector pin, ejector pin one side sets up the pressure release hole, the below of pressure release hole is equipped with the cavity, install filter element in the cavity, set up the recess on the valve body outer wall, set up the through-hole that has the inclination on the recess, the dust screen is installed on the recess.

Further, a first annular groove and a second annular groove with an angle are formed in the ejector rod, and plugging parts are arranged on the first annular groove and the second annular groove.

Further, the plugging component comprises a first O-shaped sealing ring and a second Y-shaped sealing ring, wherein the first O-shaped sealing ring is sleeved on the first annular groove, and the second Y-shaped sealing ring is sleeved on the second annular groove.

Further, the ejector rod is close to one end of the pressure relief hole, and is provided with a fixedly connected ball-shaped connecting ball, the diameter of the pressure relief hole is smaller than that of the accommodating cavity, and the diameter of the pressure relief hole is smaller than that of the cavity.

Further, the filter component is arranged in the cavity in a welding mode, and the filter component is a metal filter screen.

Further, the filter component is a cavity filter convenient to detach, a plurality of filter holes are formed in the top of the filter, the top of the filter is conical, and the filter is connected with the cavity through threads.

Further, dustproof holes are formed in the middle of the dustproof net, and rubber sealing rings are arranged at the edge parts of two sides of the dustproof net.

Further, the ejector rod is provided with a cylindrical connecting column for sleeving the spring with the spring connecting end, a cylindrical adjusting column is arranged in the adjusting knob, the front end of the adjusting column is provided with a spring column for sleeving the spring, and a second O-shaped sealing ring is arranged on the adjusting column.

Further, a third O-shaped sealing ring and a fourth O-shaped sealing ring are arranged on the valve body, and threads are formed on the outer wall of the lower portion of the valve body.

Compared with the prior art, the beneficial effects are that: 1. for the sealing effect of the pressure relief valve, on one hand, a first annular groove provided with an O-shaped sealing ring and a second annular groove provided with a second Y-shaped sealing ring which are arranged at an angle are respectively formed on a mandril which needs to be sealed, so that the sealing effect of the mandril during reciprocating motion is greatly enhanced, and on the other hand, sealing rings are additionally arranged on the sealing of the valve body and an adjusting knob, so that the sealing effect of the pressure relief valve is enhanced in an omnibearing manner;

2. On the aspect of the anti-blocking mode of the pressure relief valve, on one hand, the pressure relief hole is provided with a filter convenient to detach, so that the pressure relief valve can be conveniently replaced and can be ensured to be normally used and quickly installed; on the other hand, the through hole department at the relief valve pressure release has set up the dust screen that has rubber seal, makes the dust screen effect better and easily change to impurity, dust have been prevented from entering into the valve body inside from the through hole.

3. The through hole of the pressure release channel is provided with an inclination, so that the inner wall hole is larger than the outer wall hole, and the flow speed of the pressure release valve is faster during pressure release.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of A-A of FIG. 1;

FIG. 3 is an exploded view of the present utility model;

FIG. 4 is a schematic view of a carrier rod of the present utility model;

Fig. 5 is a schematic view of a filter of the present utility model.

In the figure: 1-an adjusting knob, 2-a valve body, 3-an ejector rod, 4-a spring, 5-a plugging part, 6-a pressure relief hole, 7-a cavity, 8-a filtering part and 9-a dust screen;

101-accommodating part, 102-adjusting column, 103-spring column, 104-second O-shaped sealing ring, 201-accommodating cavity, 202-groove, 203-through hole, 204-third O-shaped sealing ring, 205-fourth O-shaped sealing ring, 301-first annular groove, 302-second annular groove, 303-connecting ball, 304-connecting column, 501-first O-shaped sealing ring, 502-second Y-shaped sealing ring, 801-metal filter screen, 802-filter, 901-dustproof hole, 902-rubber sealing ring;

8021-filtration pore.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The sealing anti-blocking pressure release valve comprises an adjusting knob 1, a valve body 2 positioned below the adjusting knob 1 and a push rod 3 accommodated in the valve body 2, wherein an accommodating cavity 201 penetrating front and back is formed in the valve body 2, the adjusting knob 1 is provided with an accommodating part 101 recessed from the front end face, the rear end of the valve body 2 is tightly connected with the accommodating part 101 through threads, a spring 4 is arranged between the adjusting knob 1 and the push rod 3, a plugging part 5 is arranged on the push rod 3, a pressure release hole 6 is formed in one side of the push rod 3, a cavity 7 is arranged below the pressure release hole 6, a filter part 8 is arranged in the cavity 7, a groove 202 is formed in the outer wall of the valve body 2, a through hole 203 with inclination is formed in the groove 202, and a dust screen 9 is arranged on the groove 202;

The ejector rod 3 is provided with a first annular groove 301 and a second annular groove 302 with an angle, the first annular groove 301 and the second annular groove 302 are provided with a plugging part 5, the plugging part 5 comprises a first O-shaped sealing ring 501 and a second Y-shaped sealing ring 502, the first O-shaped sealing ring 501 is sleeved on the first annular groove 301, the second Y-shaped sealing ring 502 is sleeved on the second annular groove 302, the second Y-shaped sealing ring 502 is used for sealing by means of the close contact of a lip edge of the second Y-shaped sealing ring 502 to a sealing surface, the bonding force of the lip edge and the sealing surface changes along with the change of oil pressure, when the pressure is increased, the lip edge is more tightly bonded with the sealing surface, namely the inner wall of the valve body 2, so that the sealing capability is improved, and the second annular groove 302 provided with the second Y-shaped sealing ring 502 is provided with an oblique angle, the lip edge of the second Y-shaped sealing ring 502 is tightly pressed, so that the sealing capability of the second Y-shaped sealing ring 502 is enhanced again;

Then, one end of the ejector rod 3, which is close to the pressure relief hole 6, is provided with a connecting ball 303 in a ball shape which is fixedly connected, the diameter of the pressure relief hole 6 is smaller than that of the connecting ball 303, the diameter of the pressure relief hole 6 is smaller than that of the accommodating cavity 201, and the diameter of the pressure relief hole 6 is smaller than that of the cavity 7; when the pressure relief device is used, the spherical surface of the connecting ball 303 can well block the pressure relief hole 6, and the pressure of the pressure relief hole 6 smaller than the diameters of other cavities can be gathered more; the filter component 8 is arranged in the cavity 7 in a welding mode, the filter component 8 is a metal filter screen 801, the filter component 8 is a cavity filter 802 which is convenient to detach, a plurality of filter holes 8021 are formed in the top of the filter 802, the top of the filter 802 is conical, the filter 802 is connected with the cavity 7 through threads, and when the filter is used, hydraulic pressure passes through the filter screen arranged in the cavity 7 or the detachable filter 8, so that particles or dust in the filter can be blocked; the dust screen 9 is arranged at the groove 202 of the valve body 2, the middle part of the dust screen 9 is provided with a dust hole 901, and the edge parts of the two sides of the dust screen 9 are provided with rubber sealing rings 902, so that the dust screen 9 has a dust-proof effect and has stronger tightness when in use;

In addition, the connecting end of the ejector rod 3 and the spring 4 is provided with a cylindrical connecting column 304 for supporting the spring 4, a cylindrical adjusting column 102 is arranged in the adjusting knob 1, the front end of the adjusting column 102 is provided with a spring column 103 for supporting the spring 4, and the adjusting column 102 is provided with a second O-shaped sealing ring 104; the valve body 2 is provided with a third O-shaped sealing ring 204 and a fourth O-shaped sealing ring 205, the outer wall of the lower part of the valve body 2 is provided with threads, and when the valve is used, the third O-shaped sealing ring 204 arranged on the valve body 2 is arranged above the through hole 203, and the fourth O-shaped sealing ring 205 is arranged below the through hole 203, so that the tightness of the valve body 2 is enhanced.

Working principle: the pressure release valve comprises a valve body, an adjusting knob and a push rod, wherein a through hole is formed in the side wall of the valve body, the push rod is normally propped against a pressure release hole by a spring, when the pressure exceeds a threshold value, the hydraulic pressure filters particles and dust in the push rod through a filter, then the push rod is communicated to the through hole through pressure release Kong Dingqi, the pressure release is realized through the through hole, after the pressure is reduced, the push rod is reset by the spring, and the through hole on the valve body is plugged again; and the pressure value of the pressure relief valve can be adjusted by rotating the adjusting knob to increase or decrease the pressure of the spring.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a sealed relief valve of jam that prevents, includes adjust knob (1), is located valve body (2) of adjust knob (1) below and holds ejector pin (3) in valve body (2), be equipped with holding chamber (201) that link up around in valve body (2), adjust knob (1) are equipped with from the sunken accommodation portion (101) of preceding terminal surface, its characterized in that: the valve body (2) rear end with accommodation portion (101) pass through screw thread zonulae occludens, adjust knob (1) with install spring (4) between ejector pin (3), install shutoff part (5) on ejector pin (3), ejector pin (3) one side sets up pressure release hole (6), the below of pressure release hole (6) is equipped with cavity (7), filter part (8) are installed in cavity (7), set up recess (202) on valve body (2) outer wall, be provided with through-hole (203) with the inclination on recess (202), dust screen (9) are installed on recess (202).

2. The sealed anti-clogging pressure relief valve of claim 1, wherein: the ejector rod (3) is provided with a first annular groove (301) and a second annular groove (302) with an angle, and the first annular groove (301) and the second annular groove (302) are provided with a blocking part (5).

3. The sealed anti-clogging pressure relief valve of claim 2, wherein: the plugging part (5) comprises a first O-shaped sealing ring (501) and a second Y-shaped sealing ring (502), wherein the first O-shaped sealing ring (501) is sleeved on the first annular groove (301), and the second Y-shaped sealing ring (502) is sleeved on the second annular groove (302).

4. A sealed anti-clogging pressure relief valve as claimed in claim 3 wherein: the ejector rod (3) is close to one end of the pressure relief hole (6) is provided with a connecting ball (303) in a ball shape which is fixedly connected, the diameter of the pressure relief hole (6) is smaller than that of the connecting ball (303), the diameter of the pressure relief hole (6) is smaller than that of the accommodating cavity (201), and the diameter of the pressure relief hole (6) is smaller than that of the cavity (7).

5. The sealed, anti-clogging pressure relief valve of claim 4, wherein: the filter component (8) is arranged in the cavity (7) in a welding mode, and the filter component (8) is a metal filter screen (801).

6. The sealed, anti-clogging pressure relief valve of claim 5, wherein: the filter component (8) is a cavity filter (802) convenient to detach, a plurality of filter holes (8021) are formed in the top of the filter (802), the top of the filter (802) is conical, and the filter (802) is connected with the cavity (7) through threads.

7. The sealed, anti-clogging pressure relief valve of claim 6, wherein: dustproof holes (901) are formed in the middle of the dustproof net (9), and rubber sealing rings (902) are arranged at the edge parts of two sides of the dustproof net (9).

8. The sealed, anti-clogging pressure relief valve of claim 7, wherein: the ejector rod (3) is connected with the spring (4) and is provided with a cylindrical connecting column (304) for sleeving the spring (4), a cylindrical adjusting column (102) is arranged in the adjusting knob (1), the front end of the adjusting column (102) is provided with a spring column (103) for sleeving the spring (4), and the adjusting column (102) is provided with a second O-shaped sealing ring (104).

9. The sealed, anti-clogging pressure relief valve of claim 8, wherein: the valve body (2) is provided with a third O-shaped sealing ring (204) and a fourth O-shaped sealing ring (205), and the outer wall of the lower part of the valve body (2) is provided with threads.