CN213017028U

CN213017028U - Explosion-proof valve with adjustable pressure differential

Info

Publication number: CN213017028U
Application number: CN202022153842.4U
Authority: CN
Inventors: 胡月兰
Original assignee: Ningbo Idyllic Hydraulic Manufacture Co ltd
Current assignee: Ningbo Idyllic Hydraulic Manufacture Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-04-20
Anticipated expiration: 2030-09-27

Abstract

The utility model provides a pressure difference adjustable explosion-proof valve, which comprises a joint body, a valve body and a connecting rod, wherein both ends of the joint body are respectively provided with a liquid outlet and a liquid inlet; the liquid inlet is internally threaded with a valve body, and a plurality of liquid channels are annularly and equidistantly arranged on the valve body; one end of the connecting rod is connected to the valve body in a threaded manner, and the other end of the connecting rod is arranged outside the liquid inlet; a valve block is slidably mounted at one end of the connecting rod, guide bulges are symmetrically arranged on the valve block, and guide sliding grooves matched with the guide bulges are symmetrically arranged on the connecting rod; the valve plate comprises a baffle and an annular bulge, an elastic element is arranged between the valve plate and the valve body, and an annular groove is formed by the connecting rod and the valve body; one end of the elastic element is abutted against the bottom of the annular groove, and the other end of the elastic element is sleeved on the annular bulge; the connecting rod is connected with a limit nut at the outer side of the valve block through threads. The utility model provides a pair of explosion-proof valve with adjustable pressure differential has overcome the defect that current explosion-proof valve closing pressure can not be adjusted.

Description

Explosion-proof valve with adjustable pressure differential

Technical Field

The utility model relates to a valve field especially relates to an explosion-proof valve with adjustable pressure differential.

Background

Along with the development of hydraulic technology, the application of hydraulic equipment in the ferrous metallurgy industry is wider and wider, and many hydraulic equipment are applied to high-temperature, high-pressure and high-humidity environments, so that the leakage of hydraulic oil is inevitably caused. Oil leakage of hydraulic equipment not only can affect normal production, but also can cause environmental pollution, so that oil leakage control of a hydraulic system is very important work. The oil leaking part of the hydraulic system is mainly an actuating element, namely a cylinder (or a motor) at a working site, and is a hydraulic pipeline from a hydraulic control valve group to the actuating element at the site. When a cylinder or a pipe is exploded, hydraulic oil in the hydraulic station can be completely leaked in a short time under the action of the hydraulic pump, so that the whole production line is paralyzed and a large amount of hydraulic oil is leaked.

In order to solve the above problems, explosion-proof valves have been invented. However, the pressure value required by the closing of the existing explosion-proof valve cannot be adjusted, the application range is narrow, the practicability is low, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that an explosion-proof valve with adjustable pressure differential is provided to overcome the defect that current explosion-proof valve closing pressure can not be adjusted.

(II) technical scheme

In order to solve the technical problem, the utility model provides a pressure difference adjustable explosion-proof valve, which comprises a joint body, a valve body and a connecting rod, wherein a liquid outlet and a liquid inlet which are communicated with each other are respectively arranged at the two ends of the joint body; the valve body is connected with the liquid inlet through an internal thread, and a plurality of liquid channels are annularly and equidistantly arranged on the valve body; one end of the connecting rod is in threaded connection with the valve body, and the other end of the connecting rod is arranged outside the liquid inlet; a valve plate is slidably mounted at one end of the connecting rod, which is arranged outside the liquid inlet, guide bulges are symmetrically arranged on the valve plate, and guide sliding grooves matched with the guide bulges are symmetrically arranged on the connecting rod; the valve plate comprises a separation blade and an annular bulge which are connected, and the separation blade is used for opening and closing the liquid channel; an elastic element is arranged between the valve plate and the valve body, and an annular groove is formed between the connecting rod and the valve body in a surrounding mode; the elastic element is sleeved on the connecting rod, one end of the elastic element is abutted against the bottom of the annular groove, and the other end of the elastic element is sleeved on the annular bulge; the connecting rod is in the outside threaded connection of valve block has stop nut, stop nut is used for spacing the valve block slides to the outside.

Furthermore, one end of the connecting rod, which is far away from the valve block, is in threaded connection with a locking nut, and a sealing ring is installed between the locking nut and the connecting rod. The connector body comprises a liquid outlet pipe arranged at the left end and a liquid inlet pipe arranged at the right end, the liquid outlet pipe is arranged in the liquid outlet pipe, the liquid inlet pipe is provided with the liquid inlet, and the liquid inlet pipe and the liquid outlet pipe are provided with external threads which are convenient to connect with external pipe fittings.

Furthermore, the six liquid channels are respectively arranged on the valve body at equal intervals along the circumferential direction; the elastic element is a spring. The separation blade orientation the one end of valve body is provided with the annular is protruding, the separation blade is circular, the diameter of separation blade is greater than the annular is protruding. The guide bulge is arranged on the baffle; the valve body is provided with a first through hole which is convenient for the connecting rod to pass through, and the valve body is provided with a second through hole which is convenient for the connecting rod to pass through.

(III) advantageous effects

The utility model provides a pair of explosion-proof valve with adjustable pressure differential compares with prior art and has following advantage:

1) the valve block can be detached from the connecting rod by screwing the lower limiting nut through the matching of the valve body, the connecting rod, the valve block, the spring and the limiting nut, so that the spring with different elastic coefficients can be replaced to adjust the closing pressure of the explosion-proof valve, the flexibility is higher, and the application range is wider; the limiting nut is arranged outside the joint body, so that the spring is convenient to disassemble, assemble and replace, and the operation is simple;

2) the spring can be effectively limited by the matching of the annular bulge and the annular groove, so that the stability of the operation of the explosion-proof valve is improved; through the cooperation of the guide protrusion and the guide sliding groove, the valve block can be guided and limited, the movement stability of the valve block is improved, and the stability and the service life of a product are improved.

Drawings

FIG. 1 is a schematic structural view of an explosion-proof valve with adjustable pressure difference of the present invention;

FIG. 2 is a schematic structural view of a valve body and a connecting rod of the pressure difference adjustable explosion-proof valve of the present invention;

FIG. 3 is a schematic structural view of a pressure-difference-adjustable type explosion-proof valve joint body of the present invention;

FIG. 4 is a schematic structural view of a pressure difference adjustable explosion-proof valve body of the present invention;

FIG. 5 is a schematic structural view of another angle of the valve body of the pressure difference adjustable explosion-proof valve of the present invention;

FIG. 6 is a schematic structural view of a valve plate of an explosion-proof valve with adjustable pressure difference according to the present invention;

FIG. 7 is a schematic structural view of another angle of the valve plate of the pressure difference adjustable explosion-proof valve of the present invention;

FIG. 8 is a schematic structural view of a pressure difference adjustable type explosion-proof valve connecting rod of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a fitting body; 2. a valve body; 3. a connecting rod; 4. a valve plate; 5. an elastic element; 6. an annular groove; 7. a limit nut; 8. locking the nut; 9. a seal ring; 101. a liquid outlet; 102. a liquid inlet; 103. a liquid outlet pipe; 104. a liquid inlet pipe; 201. a liquid channel; 202. a second through hole; 301. a guide chute; 401. a guide projection; 402. a baffle plate; 403. an annular projection; 404. a first via.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 8, the utility model provides an explosion-proof valve with adjustable pressure difference, including connecting body 1, valve body 2 and connecting rod 3, the both ends that connect body 1 are provided with liquid outlet 101 and the inlet 102 that are linked together respectively. The connector body 1 comprises a liquid outlet pipe 103 arranged at the left end and a liquid inlet pipe 104 arranged at the right end, a liquid outlet 101 is arranged in the liquid outlet pipe 103, a liquid inlet 102 is arranged in the liquid inlet pipe 104, and external threads convenient for being connected with external pipe fittings are arranged on the liquid inlet pipe 104 and the liquid outlet pipe 103.

Referring to fig. 1, 4 and 5, a valve body 2 is connected to the liquid inlet 102 in a threaded manner, and a plurality of liquid channels 201 are annularly arranged on the valve body 2 at equal intervals; in this embodiment, the number of the liquid passages 201 is six, and the liquid passages are provided on the valve body 2 at equal intervals in the circumferential direction. One end of the connecting rod 3 is in threaded connection with the valve body 2, the other end of the connecting rod 3 is arranged outside the liquid inlet 102, and the valve body 2 is provided with a second through hole 202 through which the connecting rod 3 can pass conveniently. A valve plate 4 is slidably mounted at one end of the connecting rod 3, which is arranged outside the liquid inlet 102, guide protrusions 401 are symmetrically arranged on the valve plate 4, and guide chutes 301 matched with the guide protrusions 401 are symmetrically arranged on the connecting rod 3.

Referring to fig. 2, 6 and 7, the valve plate 4 includes a baffle 402 and an annular protrusion 403 connected with each other, the baffle 402 is used for opening and closing the liquid passage 201; in this embodiment, an annular protrusion 403 is disposed at one end of the baffle 402 facing the valve body 2, the baffle 402 is circular, the diameter of the baffle 402 is larger than that of the annular protrusion 403, and the guide protrusion 401 is disposed on the baffle 402; the valve plate 4 is provided with a first through hole 404 for the connecting rod 3 to pass through.

Referring to fig. 2, an elastic element 5 is installed between the valve plate 4 and the valve body 2; in this embodiment, the elastic element 5 is a spring. An annular groove 6 is defined between the connecting rod 3 and the valve body 2; the elastic element 5 is sleeved on the connecting rod 3, one end of the elastic element is abutted against the bottom of the annular groove 6, and the other end of the elastic element is sleeved on the annular bulge 403; the connecting rod 3 is connected with a limiting nut 7 at the outer side thread of the valve block 4, and the limiting nut 7 is used for limiting the outward sliding of the valve block 4.

Referring to fig. 2, one end of the connecting rod 3, which is far away from the valve plate 4, is connected with a locking nut 8 through a thread, and a sealing ring 9 is installed between the locking nut 8 and the connecting rod 3.

When in use, the liquid inlet pipe 104 is connected with an upstream pipeline, and the liquid outlet pipe 103 is connected with a downstream pipeline; when the downstream pipeline bursts, the pressure of the liquid inlet is higher than that of the liquid outlet, so that the valve plate is pushed to slide, the baffle plate 402 covers the liquid channel 201, and the explosion-proof valve is closed. When the closing pressure is adjusted, a proper spring is selected, the lower limiting nut 7 is screwed, the valve plate 4 is detached, and then different springs are replaced to adjust the closing pressure.

The pressure difference adjustable explosion-proof valve provided by the embodiment has the advantages of simple structure, stable operation and long service life; the valve block can be detached from the connecting rod by screwing the lower limiting nut through the matching of the valve body, the connecting rod, the valve block, the spring and the limiting nut, so that the spring with different elastic coefficients can be replaced to adjust the closing pressure of the explosion-proof valve, the flexibility is higher, and the application range is wider; the limiting nut is arranged outside the joint body, so that the spring is convenient to disassemble, assemble and replace, and the operation is simple; the spring can be effectively limited by the matching of the annular bulge and the annular groove, so that the stability of the operation of the explosion-proof valve is improved; the valve plate can be guided and limited by the matching of the guide protrusion and the guide sliding groove, so that the movement stability of the valve plate is improved, the stability of a product is improved, and the service life of the product is prolonged; the defect that the closing pressure of the existing explosion-proof valve cannot be adjusted is overcome.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An explosion-proof valve with adjustable pressure differential which characterized in that: the joint comprises a joint body (1), a valve body (2) and a connecting rod (3), wherein a liquid outlet (101) and a liquid inlet (102) which are communicated with each other are respectively arranged at two ends of the joint body (1); the valve body (2) is connected with the liquid inlet (102) in an internal thread mode, and a plurality of liquid channels (201) are arranged on the valve body (2) in an annular mode at equal intervals; one end of the connecting rod (3) is in threaded connection with the valve body (2), and the other end of the connecting rod is arranged outside the liquid inlet (102); a valve plate (4) is slidably mounted at one end of the connecting rod (3) which is arranged outside the liquid inlet (102), guide protrusions (401) are symmetrically arranged on the valve plate (4), and guide sliding grooves (301) matched with the guide protrusions (401) are symmetrically arranged on the connecting rod (3); the valve plate (4) comprises a baffle plate (402) and an annular bulge (403) which are connected, and the baffle plate (402) is used for opening and closing the liquid channel (201); an elastic element (5) is arranged between the valve plate (4) and the valve body (2), and an annular groove (6) is formed between the connecting rod (3) and the valve body (2) in a surrounding manner; the elastic element (5) is sleeved on the connecting rod (3), one end of the elastic element is abutted against the bottom of the annular groove (6), and the other end of the elastic element is sleeved on the annular bulge (403); the connecting rod (3) is in the outside threaded connection of valve block (4) has stop nut (7), stop nut (7) are used for spacingly valve block (4) slide to the outside.

2. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the connecting rod (3) is far away from one end of the valve block (4) is in threaded connection with a locking nut (8), and a sealing ring (9) is installed between the locking nut (8) and the connecting rod (3).

3. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the connector body (1) comprises a liquid outlet pipe (103) arranged at the left end and a liquid inlet pipe (104) arranged at the right end, the liquid outlet pipe (101) is arranged in the liquid outlet pipe (103), the liquid inlet pipe (102) is arranged in the liquid inlet pipe (104), and external threads convenient for being connected with external pipe fittings are arranged on the liquid inlet pipe (104) and the liquid outlet pipe (103).

4. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the number of the liquid channels (201) is six, and the liquid channels are arranged on the valve body (2) at equal intervals along the circumferential direction.

5. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the elastic element (5) is a spring.

6. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the annular bulge (403) is arranged at one end, facing the valve body (2), of the baffle plate (402), the baffle plate (402) is circular, and the diameter of the baffle plate (402) is larger than that of the annular bulge (403).

7. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: the guide projection (401) is arranged on the baffle plate (402); the valve plate (4) is provided with a first through hole (404) which is convenient for the connecting rod (3) to pass through.

8. The explosion vent valve with adjustable pressure differential as defined in claim 1, wherein: and a second through hole (202) which is convenient for the connecting rod (3) to pass through is arranged on the valve body (2).