CN212986056U

CN212986056U - Hard-sealing zero-leakage safety valve

Info

Publication number: CN212986056U
Application number: CN202021912590.2U
Authority: CN
Inventors: 张秀林
Original assignee: Henghua Valve Co ltd
Current assignee: Henghua Valve Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-16
Anticipated expiration: 2030-09-04

Abstract

The utility model relates to a relief valve technical field specifically is a relief valve of hard seal zero leakage, including the valve body, open at the valve body top has the valve pocket, and the valve body bottom is equipped with the feed liquor pipe, and the lateral wall is equipped with the drain pipe, and the sleeve is ann at the valve body top, is equipped with the case in the valve pocket, and case height dimension is greater than the distance between the liquid outlet channel top of valve pocket bottom and drain pipe, and the case top even has the connecting rod, and the connecting rod top even has spacing guide block, and spacing guide block top even has the screw rod, and the screw rod passes the sleeve and rather than threaded connection, and. This relief valve of hard seal zero leakage passes through the connecting rod with the case and is connected with the screw rod, carries out manual control, seals simultaneously feed liquor pipe liquid outlet position and drain pipe import position through the case, improves sealed effect, and through compression spring, avoid in the use simultaneously, the screw rod is not hard up, and it is not hard up to drive connecting rod and case, further ensures sealed effect, avoids the medium leakage.

Description

Hard-sealing zero-leakage safety valve

Technical Field

The utility model relates to a relief valve technical field specifically is a relief valve of hard seal zero leakage.

Background

The safety valve is a special valve whose opening and closing member is under the action of external force and when the medium pressure in the equipment or pipeline is raised to exceed the specified value, the medium pressure in the pipeline or equipment is prevented from exceeding the specified value by discharging the medium to the outside of the system, the sealing requirement is high, the existing safety valve can be divided into a hard sealing safety valve and a soft sealing safety valve from the material type of the sealing member.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relief valve of hard seal zero leakage to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hard-sealing zero-leakage safety valve comprises a valve body, wherein a valve cavity is formed in the middle of the top of the valve body, a liquid inlet pipe is arranged at the bottom of the valve body, a liquid inlet channel communicated with the valve cavity is formed in the bottom of the liquid inlet pipe, a liquid outlet pipe is arranged on the outer side wall of the valve body, a liquid outlet channel communicated with the valve cavity is formed in the end portion of the liquid outlet pipe, a sleeve with a downward opening is mounted at the top of the valve body, a valve core with an outer diameter size matched with the inner diameter size of the valve core is arranged in the valve cavity, the height size of the valve core is larger than the distance size between the bottom of the valve cavity and the top of the liquid outlet channel, a connecting rod is coaxially connected to the top of the valve core, a limiting guide block is coaxially connected to the top of the connecting rod, the limiting guide block is positioned, the screw rod vertically penetrates through the sleeve upwards and is in threaded connection with the sleeve, a compression spring is sleeved on the outer side of the connecting rod, the bottom of the compression spring is attached to the top of the valve body, the top of the compression spring is attached to the bottom of the limiting guide block, and a hand wheel is connected to the top of the screw rod.

Preferably, the liquid inlet pipe and the valve body are of an integrally formed structure, and a first connecting flange which is of an integrally formed structure is arranged at the bottom edge of the outer side wall of the liquid inlet pipe.

Preferably, the drain pipe is of an integrally formed structure with the valve body, and a second connecting flange of the integrally formed structure is arranged at the tail end of the outer side wall of the drain pipe.

Preferably, the top edge of valve body lateral wall is equipped with rather than the first mounting flange that is the integrated into one piece structure, the bottom edge of sleeve lateral wall is equipped with rather than the second mounting flange that is the integrated into one piece structure, the second mounting flange passes through bolt and nut locking to be fixed on first mounting flange.

Preferably, the connecting rod and the valve core are in an integrally formed structure.

Preferably, the limiting guide block and the connecting rod are of an integrally formed structure, and the screw rod and the limiting guide block are of an integrally formed structure.

Preferably, a through connecting hole is formed in the middle of the top of the sleeve, and the screw penetrates through the connecting hole and is in threaded connection with the connecting hole.

Compared with the prior art, the beneficial effects of the utility model are that:

this relief valve of hard seal zero leakage passes through connecting rod and screw rod and hand wheel with the case and is connected, carries out manual control, and seals simultaneously feed liquor pipe liquid outlet position and drain pipe import position through the case, improves sealed effect, reduces the probability of leaking, simultaneously through the compression spring who sets up, avoids in the use, and the screw rod is not hard up, and it is not hard up to drive connecting rod and case, further ensures sealed effect, avoids medium leakage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the valve body of the present invention;

fig. 3 is a schematic structural view of the middle sleeve of the present invention.

In the figure:

1. a valve body; 10. a valve cavity; 11. a liquid inlet pipe; 110. a liquid inlet channel; 111. a first connecting flange; 12. a liquid outlet pipe; 120. a liquid outlet channel; 121. a second connecting flange; 13. a first mounting flange;

2. a sleeve; 20. a second mounting flange; 21. connecting holes;

3. a valve core;

4. a connecting rod; 40. a limiting guide block; 41. a screw;

5. a compression spring;

6. a handwheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

a hard-sealing zero-leakage safety valve comprises a valve body 1, a valve cavity 10 is arranged in the middle of the top of the valve body 1, a liquid inlet pipe 11 is arranged at the bottom of the valve body 1, a liquid inlet passage 110 communicated with the valve cavity 10 is arranged at the bottom of the liquid inlet pipe 11, a liquid outlet pipe 12 is arranged on the outer side wall of the valve body 1, a liquid outlet passage 120 communicated with the valve cavity 10 is arranged at the end part of the liquid outlet pipe 12, a sleeve 2 with a downward opening is arranged at the top of the valve body 1, a valve core 3 with an outer diameter matched with the inner diameter of the valve cavity 10 is arranged in the valve cavity 10, the height of the valve core 3 is larger than the distance between the bottom of the valve cavity 10 and the top of the liquid outlet passage 120, a connecting rod 4 is coaxially connected with the top of the valve core 3, a limiting guide block 40 is coaxially connected with the, the top coaxial coupling of spacing guide block 40 has screw rod 41, screw rod 41 vertically upwards passes sleeve 2 and rather than threaded connection, sleeve 2 top intermediate position sets up the connecting hole 21 that runs through, screw rod 41 passes connecting hole 21 and rather than threaded connection, screw rod 41 top is connected with hand wheel 6, with case 3 through connecting rod 4 and spacing guide block 40 and screw rod 41, drive screw rod 41 along connecting hole 21 spiral shell screwing movement through rotatory hand wheel 6, and then drive case 3 spiral shell screwing lift, carry out manual control to the valve body, the height dimension of case 3 is greater than the distance size between valve pocket 10 bottom and the liquid outlet passageway 120 top simultaneously, seal simultaneously liquid inlet channel 110 inlet end and the liquid outlet initiating terminal of liquid outlet passageway 120 through case 3, improve sealed effect, reduce the probability of leaking.

In this embodiment, connecting rod 4 outside cover has compression spring 5, compression spring 5 bottom and the laminating of 1 top of valve body mutually, 5 tops of compression spring and the laminating of spacing guide block 40 bottom, elasticity momentum through compression spring 5 pushes up spacing guide block 40 upwards, increases the frictional force between screw rod 41 and the connecting hole 21, avoids screw rod 41 not hard up in the use, and it is not hard up to drive connecting rod 4 and case 3, further ensures sealed effect, avoids the medium leakage.

Besides, 11 lateral wall bottom edges of feed liquor pipe are equipped with rather than being the first flange 111 of integrated into one piece structure, and the drain pipe 12 lateral wall end is equipped with rather than being the second flange 121 of integrated into one piece structure, is convenient for through first flange 111 and second flange 121 with feed liquor pipe 11 and drain pipe 12 erection joint in the equipment pipeline.

Further, the top edge of 1 lateral wall of valve body is equipped with the first mounting flange 13 rather than being the integrated into one piece structure, the bottom edge of 2 lateral walls of sleeve is equipped with the second mounting flange 20 rather than being the integrated into one piece structure, second mounting flange 20 passes through bolt and nut locking to be fixed on first mounting flange 13, be convenient for unscrew bolt and nut in the later stage use, take off sleeve 2, maintain the change to the structure of

valve body

1 and 2 insides of sleeve, guarantee its normal work.

Specifically, feed liquor pipe 11 is the integrated into one piece structure with valve body 1, and drain pipe 12 is the integrated into one piece structure with valve body 1, and connecting rod 4 is the integrated into one piece structure with case 3, and spacing guide block 40 is the integrated into one piece structure with connecting rod 4, and screw rod 41 is the integrated into one piece structure with spacing guide block 40, and the production of being convenient for of integrated into one piece structure, and the product size precision of producing is high, stable in structure, non-deformable damages, long service life.

Before the safety valve with the hard seal and zero leakage is used, a worker firstly checks the integrity of the safety valve and whether the connection of each part is firm; then the liquid inlet pipe 11 and the liquid outlet pipe 12 are installed and connected in the equipment pipeline through a first connecting flange 111 and a second connecting flange 121; when the sealing device is used, a worker manually rotates the hand wheel 6 to drive the screw rod 41 to spirally move downwards along the connecting hole 21, the limiting guide block 40 is driven, the connecting rod 4 and the valve element 3 move downwards, the compression spring 5 is compressed through the limiting guide block 40 at the same time until the bottom of the valve element 3 is contacted with the bottom of the valve cavity 10, the tail end of the liquid inlet channel 110 and the starting end of the liquid outlet channel 120 are simultaneously sealed through the valve element 3, the limiting guide block 40 is upwards pushed through the elastic potential force of the compression spring 5 at the same time, the friction force between the screw rod 41 and the connecting hole 21 is increased, the screw rod 41 is prevented from being loosened in the using process, the connecting rod 4 and the valve element 3 are driven.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a relief valve of hard seal zero leakage, includes valve body (1), its characterized in that: the valve cavity (10) is formed in the middle of the top of the valve body (1), a liquid inlet pipe (11) is arranged at the bottom of the valve body (1), a liquid inlet channel (110) communicated with the valve cavity (10) is formed in the bottom of the liquid inlet pipe (11), a liquid outlet pipe (12) is arranged on the outer side wall of the valve body (1), a liquid outlet channel (120) communicated with the valve cavity (10) is formed in the end portion of the liquid outlet pipe (12), a sleeve (2) with a downward opening is mounted at the top of the valve body (1), a valve core (3) with an outer diameter size matched with the inner diameter size of the valve cavity (10) is arranged in the valve cavity (10), the height size of the valve core (3) is larger than the distance size between the bottom of the valve cavity (10) and the top of the liquid outlet channel (120), a connecting rod (4), the limiting guide block (40) is located in the sleeve (2), the outer diameter size of the limiting guide block is matched with the inner diameter size of the sleeve (2), the limiting guide block (40) is in sliding connection with the inner wall of the sleeve (2), a screw rod (41) is coaxially connected to the top of the limiting guide block (40), the screw rod (41) vertically penetrates through the sleeve (2) upwards and is in threaded connection with the sleeve, a compression spring (5) is sleeved on the outer side of the connecting rod (4), the bottom of the compression spring (5) is attached to the top of the valve body (1), the top of the compression spring (5) is attached to the bottom of the limiting guide block (40), and a hand wheel (6) is connected to the top of the screw rod (41).

2. The hard seal zero leak safety valve of claim 1, wherein: feed liquor pipe (11) are the integrated into one piece structure with valve body (1), just feed liquor pipe (11) lateral wall bottom edge is equipped with rather than being first flange (111) of integrated into one piece structure.

3. The hard seal zero leak safety valve of claim 1, wherein: drain pipe (12) are the integrated into one piece structure with valve body (1), just drain pipe (12) lateral wall end is equipped with rather than second flange (121) that are the integrated into one piece structure.

4. The hard seal zero leak safety valve of claim 1, wherein: the top edge of valve body (1) lateral wall is equipped with rather than first mounting flange (13) that is the integrated into one piece structure, the bottom edge of sleeve (2) lateral wall is equipped with rather than second mounting flange (20) that are the integrated into one piece structure, second mounting flange (20) are fixed on first mounting flange (13) through bolt and nut locking.

5. The hard seal zero leak safety valve of claim 1, wherein: the connecting rod (4) and the valve core (3) are in an integrally formed structure.

6. The hard seal zero leak safety valve of claim 1, wherein: the limiting guide block (40) and the connecting rod (4) are of an integrally formed structure, and the screw rod (41) and the limiting guide block (40) are of an integrally formed structure.

7. The hard seal zero leak safety valve of claim 1, wherein: the middle position of the top of the sleeve (2) is provided with a through connecting hole (21), and the screw rod (41) penetrates through the connecting hole (21) and is in threaded connection with the connecting hole.