CN212928891U

CN212928891U - Spring opens formula relief valve entirely with rust-resistant type adjusting screw

Info

Publication number: CN212928891U
Application number: CN202021912551.2U
Authority: CN
Inventors: 葛超众
Original assignee: Henghua Valve Co ltd
Current assignee: Henghua Valve Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-09
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a spring opens formula relief valve entirely with rust-resistant type adjusting screw, including the valve body, be equipped with the valve gap on the valve body, install adjusting screw on the valve gap, adjusting screw's peripheral department cover is equipped with the device that oils, and the device that oils includes base, spacer, extrusion piece and top cap has seted up a plurality of logical grooves on the spacer, and the extrusion piece surrounds in adjusting screw's peripheral department, has seted up a plurality of small openings on the extrusion piece. This spring opens formula relief valve entirely with rust-resistant type adjusting screw, through fixing the device that oils on the valve gap for when making progress oily device and pouring into rust-resistant fluid back rotating adjusting screw, fluid can be followed the coating of the small opening on the extrusion piece on adjusting screw's surface, prevents that the corrosion phenomenon from appearing in the screw thread on adjusting screw surface.

Description

Spring opens formula relief valve entirely with rust-resistant type adjusting screw

Technical Field

The utility model relates to a relief valve technical field specifically is a spring opens formula relief valve entirely with rust-resistant type adjusting screw.

Background

The spring full-open type safety valve refers to a protective valve which locks a valve or a plunger of the valve and other sealing elements by means of elastic pressure of a spring, and once high pressure generated after the pressure of a pressure container is abnormal overcomes the spring pressure of the safety valve and a locking device is pushed open, a pressure relief channel is formed, and the high pressure is released. At present, the purpose of adjusting the locking pressure of a spring is achieved by rotating an adjusting screw rod in a valve, most of the adjusting screw rods are made of common steel, so that the adjusting screw rod is easy to rust due to long-term contact with external humid air and is difficult to rotate, and the locking pressure of the spring cannot be adjusted in a contact manner.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spring opens formula relief valve entirely with rust-resistant type adjusting screw 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 spring full-open type safety valve with an antirust adjusting screw rod comprises a valve body, wherein the top end of the valve body is provided with a valve cover, the valve cover is in threaded connection with a hollow adjusting screw rod, a valve rod is sleeved in the adjusting screw rod, an oiling device is sleeved at the periphery of the adjusting screw rod and comprises a base, a spacer bush tightly welded in the base, an extrusion block sleeved at the inner side of the spacer bush and a top cover arranged at the top end of the base, the base is tightly welded with the valve cover, a cavity with a through top and a through bottom is arranged in the base, a blocking edge is tightly welded at the edge of the inner side of the bottom of the cavity, the bottom end of the spacer bush is tightly welded with the blocking edge, the spacer sleeve is characterized in that a plurality of vertical through grooves are formed in the surface of the spacer sleeve, the inner wall of the extrusion block is tightly attached to the outer wall of the adjusting screw rod, and a plurality of leakage grooves which are spirally arranged are formed in the outer surface of the extrusion block.

Preferably, the top end of the valve cover is integrally formed with a boss, the adjusting screw rod penetrates through the boss and is in threaded connection with the boss, and the outer surface of the boss is in a threaded shape and is in threaded connection with the protective cover.

Preferably, a supporting plate is sleeved on the periphery of the valve rod, the valve rod penetrates through the supporting plate and is in sliding connection with the supporting plate, and the bottom end of the adjusting screw rod is abutted to the top end of the supporting plate.

Preferably, the edge of the periphery of the top end of the adjusting screw rod is integrally formed with a convex edge, and a pair of flat positions are symmetrically arranged on the convex edge.

Preferably, the spacer bush is of a hollow cylinder structure, and the inner diameter of the cavity, the outer diameter of the spacer bush, the inner diameter of the blocking edge and the inner diameter of the extrusion block are sequentially reduced.

Preferably, the top end of the top cover is tightly welded with an oil licking bucket which is hollow and communicated with the gap between the base and the spacer bush after penetrating through the top cover.

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

this spring opens formula relief valve entirely with rust-resistant type adjusting screw, through fixing the device that oils on the valve gap for when making progress oily device and pouring into rust-resistant fluid back rotating adjusting screw, fluid can be followed the coating of the small opening on the extrusion piece on adjusting screw's surface, prevents that the corrosion phenomenon from appearing in the screw thread on adjusting screw surface.

Drawings

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

FIG. 2 is a schematic view of a part of the structure of the present invention;

FIG. 3 is a schematic view of the installation of the oil applying device of the present invention;

fig. 4 is another schematic installation diagram of the middle oiling device of the present invention;

fig. 5 is a schematic structural view of the oiling device in the present invention.

The meaning of each reference number in the figures is:

1. a valve body; 11. a valve cover; 111. a boss; 12. adjusting the screw rod; 121. a convex edge; 122. flattening; 13. a valve stem; 131. a resisting plate; 14. a protective cover; 2. an oiling device; 21. a base; 211. a cavity; 212. blocking edges; 22. a spacer sleeve; 221. a through groove; 23. extruding the block; 231. a leak groove; 24. a top cover; 241. licking the oil bucket.

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 "a", "an", and "the" mean two or more unless explicitly limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution:

a spring full-open type safety valve with an antirust adjusting screw rod comprises a valve body 1, a valve cover 11 is installed at the top end of the valve body 1, a hollow adjusting screw rod 12 is connected to the valve cover 11 in a threaded manner, a valve rod 13 is sleeved in the adjusting screw rod 12, an oiling device 2 is sleeved at the periphery of the adjusting screw rod 12, the oiling device 2 comprises a base 21, a spacer 22 tightly welded in the base 21, an extrusion block 23 sleeved on the inner side of the spacer 22 and a top cover 24 installed at the top end of the base 21, the base 21 and the valve cover 11 are tightly welded, a top-bottom through cavity 211 is formed in the base 21, a blocking edge 212 is tightly welded at the inner side edge of the bottom of the cavity 211, the bottom end of the spacer 22 is tightly welded with the blocking edge 212, a plurality of vertical through grooves 221 are formed in the surface of the spacer 22, the inner wall of the extrusion block 23 is tightly attached to the outer wall of the adjusting screw rod 12, so that the extrusion block 23 can be tightly wrapped on the outer side of the adjusting screw 12. Offer a plurality of bleeders 231 that are the heliciform and arrange on extrusion piece 23's the surface, through the space department injection antirust fluid that forms between spacer 22 and the base 21, make antirust fluid can follow logical groove 221 and bleeder 231 department in proper order and adjusting screw 12's surface contact and can prevent antirust fluid seepage under extrusion piece 23 is to adjusting screw 12's package, when rotating adjusting screw 12, antirust fluid coats on adjusting screw 12's surface from 2 bleeders 231 on extrusion piece 23, thereby prevent that adjusting screw 12's surface corrosion from appearing.

In this embodiment, the boss 111 is integrally formed at the top end of the valve cap 11, the adjusting screw 12 passes through the boss 111 and is screwed with the boss 111, and the outer surface of the boss 111 is threaded and is screwed with the protective cover 14, so that the top end of the valve rod 13 is protected by the protective cover 14. The periphery of the valve rod 13 is sleeved with a supporting plate 131, the valve rod 13 penetrates through the supporting plate 131 and is in sliding connection with the supporting plate 131, the bottom end of the adjusting screw 12 is abutted to the top end of the supporting plate 131, a spring is arranged in the valve cover 11, the supporting plate 131 is abutted to the top end, the adjusting screw 12 can compress the spring to different lengths through the supporting plate 131 by rotating the adjusting screw 12, and therefore the purpose of changing the locking pressure of the spring is achieved.

Specifically, the edge of the top end periphery of the adjusting screw 12 is integrally formed with a convex edge 121, and a pair of flat portions 122 are symmetrically arranged on the convex edge 121, so that the adjusting screw 12 can be rotated by using tools such as a wrench.

Further, the spacer 22 is of a hollow cylindrical structure, and the inner diameter of the cavity 211, the outer diameter of the spacer 22, the inner diameter of the blocking edge 212 and the inner diameter of the extrusion block 23 are sequentially reduced, so that when the extrusion block 23 surrounds the outer side of the adjusting screw 12, the base 21 and the adjusting screw 12 can be prevented from being scratched, and meanwhile, a cavity for storing antirust oil is formed between the inner wall of the base 21 and the spacer 22.

In addition, the top of top cap 24 is in hollow cavity, make adjusting screw 12 pass in can following top cap 24, the peripheral edge play of top cap 24 is the convex edge form that is downward salient and offers the internal thread in the inboard, the top edge of base 21 surface is offered with internal thread shape assorted external screw thread, make top cap 24 and base 21 threaded connection, the top close weld of top cap 24 has licks oil fill 241, lick oil fill 241 be hollow and link up with the space department between base 21 and the spacer 22 after top cap 24 and be linked together, make the accessible after rust-preventive oil liquid uses up can add rust-preventive oil to the oil device 2 in from licking oil fill 241 department.

When the spring full-open type safety valve with the rust-proof adjusting screw rod of the embodiment is used, firstly, after the protective cover 14 is opened, the rust-proof oil can be added into the oil feeding device 2 from the oil licking bucket 241, so that the oil fills the gap formed between the base 21 and the spacer 22 by the rust-proof oil, then the rust-proof oil can be sequentially in contact with the surface of the adjusting screw rod 12 from the through groove 221 and the leakage groove 231 and can prevent the leakage of the rust-proof oil under the tight wrapping of the adjusting screw rod 12 by the extrusion block 23, and finally, when the adjusting screw rod 12 is rotated, the rust-proof oil is coated on the outer surface of the adjusting screw rod 12 from the leakage groove 231 on the extrusion block 23, so that the surface of the adjusting screw rod 12 is prevented.

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 spring opens formula relief valve entirely with rust-resistant type adjusting screw, includes valve body (1), valve gap (11) are installed on the top of valve body (1), threaded connection has adjusting screw (12) that are hollow form on valve gap (11), adjusting screw (12) endotheca is equipped with valve rod (13), its characterized in that: the periphery of the adjusting screw rod (12) is sleeved with an oiling device (2), the oiling device (2) comprises a base (21), a spacer bush (22) tightly welded in the base (21), an extrusion block (23) sleeved on the inner side of the spacer bush (22) and a top cover (24) arranged at the top end of the base (21), the base (21) is tightly welded with the valve cover (11), a cavity (211) with a through top and bottom is arranged in the base (21), a blocking edge (212) is tightly welded at the inner side edge of the bottom of the cavity (211), the bottom end of the spacer bush (22) is tightly welded with the blocking edge (212), a plurality of vertical through grooves (221) are arranged on the surface of the spacer bush (22), the inner wall of the extrusion block (23) is tightly attached to the outer wall of the adjusting screw rod (12), the outer surface of the extrusion block (23) is provided with a plurality of leakage grooves (231) which are spirally arranged.

2. The spring full open safety valve with rust resistant adjustment screw of claim 1, wherein: the top end integrated into one piece of valve gap (11) has boss (111), adjusting screw (12) follow pass in boss (111) and with boss (111) threaded connection, the surface of boss (111) is the screw thread form and threaded connection has safety cover (14).

3. The spring full open safety valve with rust resistant adjustment screw of claim 1, wherein: the periphery of the valve rod (13) is sleeved with a supporting plate (131), the valve rod (13) penetrates through the supporting plate (131) and is in sliding connection with the supporting plate (131), and the bottom end of the adjusting screw rod (12) is abutted to the top end of the supporting plate (131).

4. The spring full open safety valve with rust resistant adjustment screw of claim 1, wherein: a convex edge (121) is integrally formed at the peripheral edge of the top end of the adjusting screw rod (12), and a pair of flat positions (122) is symmetrically arranged on the convex edge (121).

5. The spring full open safety valve with rust resistant adjustment screw of claim 1, wherein: the spacer bush (22) is of a hollow cylinder structure, and the inner diameter of the cavity (211), the outer diameter of the spacer bush (22), the inner diameter of the blocking edge (212) and the inner diameter of the extrusion block (23) are reduced in sequence.

6. The spring full open safety valve with rust resistant adjustment screw of claim 1, wherein: the top end of the top cover (24) is tightly welded with an oil licking bucket (241), and the oil licking bucket (241) is hollow and communicated with a gap between the base (21) and the spacer bush (22) after penetrating through the top cover (24).