阅读说明：本技术 一种注脂单流阀 (Grease injection check valve ) 是由 代永生 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种注脂单流阀,包括阀体,所述阀体内部依次连通设置有注脂孔、导流腔和滑动腔,所述滑动腔内部滑动设置有堵头,所述堵头靠近所述导流腔的端部设置有密封锥头,所述堵头外侧对称设置有两面切削平面,所述滑动腔远离所述导流腔的开口端设置有阻挡环,所述阻挡环和所述堵头之间设置有压紧弹簧,用于压紧所述堵头使所述密封锥头对所述导流腔进行密封。有益效果在于：通过在堵头外侧对称切削两个切削平面,使堵头成扁平状结构,能够增加堵头与滑动腔之间的空间,便于泄压和注脂,同时避免长时间使用造成堵塞,使用效果好。(The invention discloses a grease injection check valve which comprises a valve body, wherein a grease injection hole, a flow guide cavity and a sliding cavity are sequentially communicated and arranged in the valve body, a plug is arranged in the sliding cavity in a sliding mode, a sealing conical head is arranged at the end part, close to the flow guide cavity, of the plug, two cutting planes are symmetrically arranged on the outer side of the plug, a blocking ring is arranged at the opening end, far away from the flow guide cavity, of the sliding cavity, a compression spring is arranged between the blocking ring and the plug and used for compressing the plug to enable the sealing conical head to seal the flow guide cavity. Has the advantages that: through two cutting planes of symmetry cutting in the end cap outside, make the end cap become the platykurtic structure, can increase the space between end cap and the slip chamber, be convenient for the pressure release with annotate the fat, avoid long-time the use simultaneously to cause the jam, excellent in use effect.)

1. A annotate fat single current valve which characterized in that: comprises a valve body (1), a connecting part (103) with external threads is arranged on the outer side of the valve body (1), used for realizing the connection between the valve body (1) and the equipment mounting hole, the valve body (1) is internally communicated with a grease injection hole (101), a flow guide cavity (102) and a sliding cavity (104) in sequence, a plug (2) is arranged in the sliding cavity (104) in a sliding manner, a sealing conical head (201) is arranged at the end part of the plug (2) close to the diversion cavity (102), two cutting planes (202) are symmetrically arranged on the outer side of the plug (2), a stop ring (4) is arranged at the opening end of the sliding cavity (104) far away from the diversion cavity (102), a compression spring (3) is arranged between the stop ring (4) and the choke plug (2), the sealing cone head is used for pressing the choke plug (2) to enable the sealing cone head (201) to seal the diversion cavity (102).

2. The grease-injection check valve as claimed in claim 1, wherein: the outer diameter of the connecting part (103) is larger than that of the valve body (1).

3. The grease-injection check valve as claimed in claim 1, wherein: the connecting part of the flow guide cavity (102) and the sliding cavity (104) is provided with a sealing taper hole (105), the large-diameter end of the sealing taper hole (105) is connected with the sliding cavity (104), and the taper of the sealing taper hole (105) is the same as that of the sealing taper head (201).

4. The grease-injection check valve as claimed in claim 1, wherein: the grease injection hole (101) is an inner hexagonal hole.

5. The grease-injection check valve as claimed in claim 1, wherein: the end face, far away from the sealing conical head (201), of the plug (2) is provided with a limiting groove (203) used for limiting the compression spring (3).

6. The grease-injection check valve as claimed in claim 1, wherein: the blocking ring (4) is formed at the opening end of the sliding cavity (104) in a riveting and pressing mode.

Technical Field

the invention relates to the technical field of check valves, in particular to a grease injection check valve.

Background

A grease injection check valve is a device for injecting lubricating grease, which is applied to equipment such as large-scale machinery, petrochemical equipment, ball valves, flat gate valves, well head devices and the like. However, the plug of the current check valve is of a cylindrical structure, so that the grease injection space is small, grease is not easy to inject, and meanwhile, after the check valve is used for a long time, the check valve is easy to block and even cannot be used.

Disclosure of Invention

The invention aims to solve the problems, and provides a grease injection check valve to solve the technical problems that in the prior art, a plug of the existing check valve is of a cylindrical structure, a grease injection space is small, grease is not easy to inject, and the plug is easy to block or even cannot be used after being used for a long time. According to the preferable technical scheme of the technical scheme provided by the invention, two cutting planes are symmetrically cut on the outer side of the plug, so that the plug is in a flat structure, the space between the plug and the sliding cavity can be increased, the pressure relief and the grease injection are facilitated, meanwhile, the technical effects of blockage caused by long-time use, good use effect and the like are avoided, and the technical effects are explained in detail in the following.

in order to achieve the purpose, the invention provides the following technical scheme:

The invention provides a grease injection check valve which comprises a valve body, wherein a connecting part with external threads is arranged on the outer side of the valve body and used for realizing the connection of the valve body and an equipment mounting hole, a grease injection hole, a flow guide cavity and a sliding cavity are sequentially communicated and arranged in the valve body, a plug is arranged in the sliding cavity in a sliding mode, a sealing conical head is arranged at the end part, close to the flow guide cavity, of the plug, two cutting planes are symmetrically arranged on the outer side of the plug, a blocking ring is arranged at the opening end, far away from the flow guide cavity, of the sliding cavity, and a compression spring is arranged between the blocking ring and the plug and used for compressing the plug to enable the sealing conical head to seal the flow guide.

adopt above-mentioned annotate fat single current valve, during the use, through the connecting portion will the valve body is installed inside the mounting hole of equipment, utilizes compression spring's elasticity promotes the end cap makes sealed conical head is right the water conservancy diversion chamber is sealed, through end cap outside symmetry processing sets up cutting plane makes the end cap is flat square structure, can increase the end cap with space between the slip chamber is convenient for the pressure release and annotates the fat, avoids long-time the use to cause the jam simultaneously, excellent in use effect.

Preferably, the connecting portion has an outer diameter larger than an outer diameter of the valve body.

Preferably, a sealing taper hole is formed in the joint of the diversion cavity and the sliding cavity, the large-diameter end of the sealing taper hole is connected with the sliding cavity, and the taper of the sealing taper hole is the same as that of the sealing taper head.

Preferably, the grease injection hole is an inner hexagonal hole.

Preferably, the end face, far away from the sealing conical head, of the plug is provided with a limiting groove for limiting the compression spring.

Preferably, the blocking ring is formed at the opening end of the sliding cavity in a riveting and pressing mode.

Has the advantages that: through two cutting planes of symmetry cutting in the end cap outside, make the end cap become the platykurtic structure, can increase the space between end cap and the slip chamber, be convenient for the pressure release with annotate the fat, avoid long-time the use simultaneously to cause the jam, excellent in use effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the internal structure of the present invention;

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

FIG. 3 is a schematic view of the plug structure of the present invention;

Fig. 4 is a right side view of the bulkhead of the invention.

the reference numerals are explained below:

1. A valve body; 101. a grease injection hole; 102. a flow guide cavity; 103. a connecting portion; 104. a sliding cavity; 105. sealing the taper hole; 2. a plug; 201. sealing the conical head; 202. cutting a plane; 203. a limiting groove; 3. a compression spring; 4. a stop ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1-4, the invention provides a grease injection check valve, which comprises a valve body 1, wherein a connecting part 103 with external threads is arranged on the outer side of the valve body 1 and is used for connecting the valve body 1 with an equipment mounting hole, a grease injection hole 101, a flow guide cavity 102 and a sliding cavity 104 are sequentially communicated and arranged in the valve body 1, a plug 2 is slidably arranged in the sliding cavity 104, a sealing conical head 201 is arranged at the end part of the plug 2 close to the flow guide cavity 102, two cutting planes 202 are symmetrically arranged on the outer side of the plug 2, a blocking ring 4 is arranged at the opening end of the sliding cavity 104 far away from the flow guide cavity 102, and a compression spring 3 is arranged between the blocking ring 4 and the plug 2 and is used for compressing the plug 2 to enable the sealing conical head.

As an alternative embodiment, the outer diameter of the connecting portion 103 is larger than the outer diameter of the valve body 1, so that the valve body 1 can be conveniently inserted into the mounting hole of the equipment, and the threaded connection between the valve body 1 and the mounting hole of the equipment can be conveniently realized through the connecting portion 103.

The sealing taper hole 105 is arranged at the joint of the diversion cavity 102 and the sliding cavity 104, the large-diameter end of the sealing taper hole 105 is connected with the sliding cavity 104, the taper of the sealing taper hole 105 is the same as that of the sealing taper head 201, and the sealing taper hole 105 is arranged in such a way, so that the sealing effect of the sealing taper head 201 on the diversion cavity 102 can be improved.

The grease injection hole 101 is an inner hexagonal hole, which is arranged to facilitate screwing the valve body 1 through the grease injection hole 101, thereby facilitating the installation of the valve body 1.

The end face, far away from the sealing conical head 201, of the plug 2 is provided with a limiting groove 203 for limiting the compression spring 3, so that the stability of the compression spring 3 can be guaranteed, and the compression effect of the compression spring 3 on the plug 2 is guaranteed.

The mode shaping that the barrier ring 4 adopted the fourth of the twelve earthly branches to press is at the open end of sliding chamber 104, sets up the fastness that can guarantee barrier ring 4 like this, guarantees the leakproofness between barrier ring 4 and the valve body 1 simultaneously.

Adopt above-mentioned structure, during the use, install inside the mounting hole of equipment valve body 1 through connecting portion 103, utilize pressure spring 3's elasticity to promote end cap 2, make sealed conical head 201 seal water conservancy diversion chamber 102, set up cutting plane 202 through symmetrical processing in the 2 outsides of end cap, make end cap 2 be flat square structure, can increase the space between end cap 2 and the slip chamber 104, be convenient for the pressure release with annotate the fat, avoid long-time use to cause the jam simultaneously, excellent in use effect.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.