CN213575736U

CN213575736U - Check valve

Info

Publication number: CN213575736U
Application number: CN202021422170.6U
Authority: CN
Inventors: 唐聪亮; 周光; 任英举; 张超; 雍自春; 龙自阳
Original assignee: National Energy Group Ningxia Coal Industry Co Ltd
Current assignee: National Energy Group Ningxia Coal Industry Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-06-29
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a check valve. The check valve includes: the valve body is provided with a water through hole penetrating through the valve body, and the hole wall of the water through hole is provided with a water through groove; the plug is arranged in the water passing hole in a sliding manner, the elastic piece is positioned on one side of the plug, which is opposite to the inlet of the water passing hole, the first end of the elastic piece is installed in the water passing hole, and the second end of the elastic piece is abutted against the plug in the water passing hole; the sealing gasket is provided with a water inlet hole, the sealing gasket is covered on the inlet of the water inlet hole in a sealing mode, and the plugging moves to the sealing gasket and covers the water inlet hole in a sealing mode. The application provides a check valve has avoided inside ponding of drilling rod and drilling water to gush out from the drilling rod, has shortened the engineering time, has improved the security.

Description

Check valve

Technical Field

The application relates to the technical field of valves, in particular to a check valve.

Background

When the underground construction of colliery, in order to prevent the accident that permeates water, persist all the time: construction is carried out according to the principle of digging ratio detection and first detection and then digging.

In the conventional water exploration and drainage drilling construction process of a coal mine, clear water is injected from a drill rod through a mud pump to drill in a circulating mode, and the inner diameters of the drill rods are effectively communicated. When the drill meets water-containing areas such as a water-containing stratum, a water-containing crack, an old kiln, a abandoned roadway, a goaf and the like, water in a drill hole reversely enters the drill rod and is sprayed out of the drill rod under the pressure loss state, a large amount of accumulated water and drilling water flow out of the drill rod, the water tail, the drill rod and the drill rod are not convenient for personnel to detach, the operation time is seriously wasted, the construction drill site is wet and slippery, and the safety management difficulty is increased.

Therefore, it is necessary to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The application provides a check valve to solve the problem that exists among the prior art, avoid the inside ponding of drilling rod and well drilling water to gush out, shorten the engineering time, improve the security.

The application provides a check valve includes: the valve body is provided with a water through hole penetrating through the valve body, and the hole wall of the water through hole is provided with a water through groove; the plug is arranged in the water passing hole in a sliding manner, the elastic piece is positioned on one side of the plug, which is opposite to the inlet of the water passing hole, the first end of the elastic piece is arranged in the water passing hole, and the second end of the elastic piece is abutted against the plug in the water passing hole; the sealing gasket is provided with a water inlet hole, the sealing gasket is covered on the inlet of the water inlet hole in a sealing mode, and the plugging moves to the sealing gasket and covers the water inlet hole in a sealing mode.

Optionally, the water hole includes spacing hole and the mounting hole that is linked together, the internal diameter in spacing hole is less than the internal diameter of mounting hole, spacing hole with the mounting hole is injectd the ka tai in the juncture, the first end butt of elastic component is in on the ka tai, the second end butt of elastic component is in on the shutoff.

Optionally, the plug is a spherical plug, and the inner diameter of the water inlet hole is smaller than the diameter of the spherical plug.

Optionally, the water passing groove is formed in the hole wall of the mounting hole and penetrates through the mounting hole along the axial direction of the mounting hole.

Optionally, the elastic member is a spring.

Optionally, the water hole still includes the intercommunication is in on the mounting hole dorsad the sealed hole of one side of spacing hole, sealed the pad inlays to be established in the sealed hole.

Optionally, the inner diameter of the sealing hole is larger than the inner diameter of the mounting hole, a sealing table is defined at a junction of the sealing hole and the mounting hole, and the sealing pad abuts against the sealing table.

Optionally, a clamping groove is formed in the hole wall of the sealing hole, a limiting portion is clamped in the clamping groove, and the sealing gasket is limited between the sealing platform and the limiting portion.

Optionally, the clamping groove is an annular clamping groove, the limiting portion is a clamp spring, the clamp spring is clamped in the annular clamping groove, and the sealing gasket is abutted to the clamp spring.

Optionally, the valve body includes first installation end and the second installation end that sets up relatively, it is in still including the intercommunication to cross the water hole sealed hole is last dorsad the screw hole of one side of crossing the water hole, the screw hole is towards keeping away from the direction of crossing the water hole extends and link up first installation end, be provided with the external screw thread on the outer wall of second installation end.

The application provides a check valve, when being used on the drilling rod, after the normal start slush pump, mud gets into from the entry in water hole, the shutoff pushes the elastic component and breaks away from sealed the pad towards the direction of keeping away from sealed pad under the pumping pressure of mud, make mud pass and enter in the drilling hole from water hole and water groove, and after slush pump outage, the shutoff moves until sealed butt on sealed inlet opening towards sealed pad again under the backward extrusion effect of elastic component, prevent that the water in the drilling hole from getting into the drilling rod and overflowing from the drilling rod through the check valve, the constructor of being convenient for dismantles the water tail, the drilling rod or add the drilling rod, the activity duration has been saved, and effectively avoided the construction site wet and smooth, the operation security has been improved.

Drawings

The preferred embodiments of the present application will hereinafter be described in detail to facilitate an understanding of the objects and advantages of the application, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a check valve provided in an alternative embodiment of the present application.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic structural diagram of a valve body according to an alternative embodiment of the present application.

FIG. 4 is a cross-sectional view of a mounting hole provided in an alternative embodiment of the present application.

Fig. 5 is a schematic structural diagram of a gasket according to an alternative embodiment of the present application.

Fig. 6 is a top view of fig. 5.

Fig. 7 is a schematic structural diagram of an elastic member according to an alternative embodiment of the present application.

Fig. 8 is a schematic structural view of a plug provided in an alternative embodiment of the present application.

Fig. 9 is a schematic structural view of a limiting portion according to an alternative embodiment of the present application.

Description of reference numerals:

1-a valve body, 10-a water passing hole, 11-a water passing groove, 12-a limiting hole, 13-a mounting hole, 14-a clamping table, 15-a sealing hole, 16-a sealing table, 17-a clamping groove, 18-a first mounting end, 19-a second mounting end, a 180-threaded hole and 190-an external thread;

2-an elastic member;

3, plugging;

4-sealing gasket, 40-water inlet;

5-limiting part and 50-bulge.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1 to 3, the present application provides a check valve, which includes a valve body 1, an elastic member 2, a plug 3, and a packing 4.

Referring to fig. 1 to 3, the valve body 1 is provided with a water through hole 10 penetrating through the valve body 1, and a water through groove 11 is provided on a hole wall of the water through hole 10; the plug 3 is slidably arranged in the water through hole 10, the elastic member 2 is positioned on one side of the plug 3, which is opposite to the inlet of the water through hole 10, the first end of the elastic member 2 is arranged in the water through hole 10, and the second end of the elastic member 2 abuts against the plug 3 in the water through hole 10; the water inlet hole 40 has been seted up on sealed 4, sealed 4 sealed the cover of filling up is in the entry of water hole 10, the shutoff 3 moves to sealed when sealing 4 the sealed cover is in on the water inlet hole 40.

The application provides a check valve, when being used on the drilling rod, normally start behind the slush pump, mud gets into from the entry in water hole 10, shutoff 3 extrudees elastic component 2 and breaks away from sealed pad 4 towards the direction of keeping away from sealed pad 4 under the pumping pressure of mud, make mud pass and get into in the drilling hole from water hole 10 and water groove 11, and after slush pump stoppage, shutoff 3 moves sealed pad 4 again under the backward extrusion of elastic component 2 and until sealed butt on the inlet opening 40 of sealed pad 4, prevent that the water in the drilling hole from getting into the drilling rod and overflowing from the drilling rod through the check valve, be convenient for constructor dismantles the water tail, the drilling rod or add the drilling rod, the activity duration has been saved, and effectively avoided the construction site wet and smooth, the operation security has been improved.

Optionally, the water passing hole 10 includes a limiting hole 12 and a mounting hole 13 that are communicated with each other, an inner diameter of the limiting hole 12 is smaller than an inner diameter of the mounting hole 13, a clamping table 14 is defined at a boundary between the limiting hole 12 and the mounting hole 13, a first end of the elastic member 2 abuts against the clamping table 14, and a second end of the elastic member 2 abuts against the plug 3. The clamping table 14 plays a limiting role through the first end of the elastic part 2, so that the elastic part 2 is limited in the mounting hole 13, and the running stability of the elastic part 2 is improved.

Optionally, the plug 3 is a spherical plug, and the inner diameter of the water inlet hole 40 is smaller than the diameter of the spherical plug. As shown in fig. 5, 6 and 8, the cross section of inlet opening 40 is the circular port, and spherical stifled direct seal covers on inlet opening 40, can realize effectively sealing to inlet opening 40, and wherein sealed 4 can be the cushion, can produce certain deformation after receiving the extrusion that spherical stifled to better laminating on spherical stifled, improve sealed effect, wherein shutoff 3 can also be the steel ball stifled, anti extrusion, stable in structure.

Optionally, the water passing groove 11 is formed in a hole wall of the mounting hole 13 and penetrates through the mounting hole 13 along an axial direction of the mounting hole 13. The present embodiment can further improve the efficiency of the water through hole 10 for delivering slurry, wherein the cross section of the water through grooves 11 can be a circular structure of 3/4 as shown in fig. 4, and the number of the water through grooves 11 can be four, and the four water through grooves 11 are uniformly distributed along the circumferential direction of the mounting hole 13, so as to further improve the efficiency of delivering slurry.

As shown in fig. 7, the elastic member 2 may be a spring. The spring has stability good, resumes the timely effect of deformation, and the spring can reduce and occupy the space in the mounting hole 13, crosses the shutoff 3 through inlet opening 40 and can get into in the mounting hole 13 to get into spacing hole 12 from mounting hole 13 fast in entering water tank 11 in to improve the transmission efficiency of mud.

Optionally, the water passing hole 10 further comprises a sealing hole 15 communicated with the mounting hole 13 and facing away from one side of the limiting hole 12, and the sealing gasket 4 is embedded in the sealing hole 15. The sealing hole 15 in this embodiment provides a positioning structure for the gasket 4, increasing the stability of the installation of the gasket 4.

Optionally, the inner diameter of the sealing hole 15 is larger than the inner diameter of the mounting hole 13, a sealing platform 16 is defined at the interface between the sealing hole 15 and the mounting hole 13, and the sealing pad 4 abuts against the sealing platform 16. The sealing table 16 can play an effective limiting role on the sealing gasket 4, so that the sealing gasket 4 is prevented from entering the mounting hole 13, and the running stability of the check valve is improved.

Optionally, a clamping groove 17 is formed in the hole wall of the sealing hole 15, a limiting portion 5 is clamped in the clamping groove 17, and the sealing gasket 4 is limited between the sealing platform 16 and the limiting portion 5. The stopper 5 and the seal land 16 of the present embodiment restrict the seal gasket 4 therein, prevent the seal gasket 4 from moving in the axial direction of the seal hole 15, and further improve the structural stability of the seal gasket 4.

Optionally, the clamping groove 17 is an annular clamping groove 17, the limiting portion 5 is a clamp spring, the clamp spring is clamped in the annular clamping groove 17, and the sealing gasket 4 abuts against the clamp spring. As shown in fig. 9, the clamp spring can enter the sealing hole 15 after being extruded and is stably embedded in the clamping groove 17 after being embedded in the clamping groove 17 to restore deformation, so that the sealing gasket 4 is effectively limited. When the sealing gasket 4 needs to be replaced, the protrusions 50 on the clamp springs are extruded, the inner diameters of the clamp springs are reduced and the clamp springs fall off from the clamping grooves 17, the old sealing gasket 4 is taken down, the clamp springs are clamped in the clamping grooves 17 again after the new sealing gasket 4 is replaced, and the replacement process of the sealing gasket 4 is simplified by the clamp springs.

Optionally, the valve body 1 includes a first mounting end 18 and a second mounting end 19 that are arranged relatively, the water passing hole 10 further includes a threaded hole 180 that is communicated with the sealing hole 15 back to one side of the water passing hole 10, the threaded hole 180 faces away from the direction of the water passing hole 10 and extends and penetrates through the first mounting end 18, an external thread 190 is arranged on the outer wall of the second mounting end 19, and the limiting hole 12 penetrates through the second mounting end 19. The threaded bore 180 and the external thread 190 in this application facilitate the threaded connection of the valve body 1 to the drill rod.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A check valve, comprising:

the valve body is provided with a water through hole penetrating through the valve body, and the hole wall of the water through hole is provided with a water through groove;

the plug is arranged in the water passing hole in a sliding manner, the elastic piece is positioned on one side of the plug, which is opposite to the inlet of the water passing hole, the first end of the elastic piece is arranged in the water passing hole, and the second end of the elastic piece is abutted against the plug in the water passing hole;

the sealing gasket is provided with a water inlet hole, the sealing gasket is covered on the inlet of the water inlet hole in a sealing mode, and the plugging moves to the sealing gasket and covers the water inlet hole in a sealing mode.

2. The check valve of claim 1, wherein the water through hole comprises a limiting hole and a mounting hole which are communicated with each other, the inner diameter of the limiting hole is smaller than that of the mounting hole, a clamping table is defined at the junction of the limiting hole and the mounting hole, a first end of the elastic member abuts against the clamping table, and a second end of the elastic member abuts against the plug.

3. The check valve of any of claims 1-2, wherein the plug is a ball plug, and the inner diameter of the water inlet is smaller than the diameter of the ball plug.

4. The check valve of claim 2, wherein the water passing groove is formed in a wall of the mounting hole and extends through the mounting hole in an axial direction of the mounting hole.

5. The check valve of any of claims 1-2, wherein the resilient member is a spring.

6. The check valve of claim 2, wherein the water passing hole further comprises a sealing hole communicated with one side of the mounting hole facing away from the limiting hole, and the sealing gasket is embedded in the sealing hole.

7. The check valve of claim 6, wherein an inner diameter of the seal bore is greater than an inner diameter of the mounting bore, the seal bore and the mounting bore defining a seal land at an interface, the seal abutting the seal land.

8. The check valve of claim 7, wherein a slot is formed in a wall of the sealing hole, a limiting portion is engaged with the slot, and the sealing pad is defined between the sealing platform and the limiting portion.

9. The check valve of claim 8, wherein the clamping groove is an annular clamping groove, the limiting portion is a clamping spring, the clamping spring is clamped in the annular clamping groove, and the sealing gasket abuts against the clamping spring.

10. The check valve of any one of claims 6 to 9, wherein the valve body comprises a first mounting end and a second mounting end which are arranged oppositely, the water passing hole further comprises a threaded hole which is communicated with one side of the sealing hole, which is opposite to the water passing hole, the threaded hole extends in a direction away from the water passing hole and penetrates through the first mounting end, and an external thread is arranged on the outer wall of the second mounting end.