CN217130970U

CN217130970U - Auxiliary sealing device and coal sample tank with same

Info

Publication number: CN217130970U
Application number: CN202220770864.1U
Authority: CN
Inventors: 向衍斌; 黎攀; 董春阳; 程波
Original assignee: CCTEG Chongqing Research Institute Co Ltd
Current assignee: CCTEG Chongqing Research Institute Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-05
Anticipated expiration: 2032-04-02

Abstract

The utility model relates to an auxiliary seal device and have auxiliary seal device's coal sample jar belongs to coal mine safety technical field, wherein auxiliary seal device is including the location axle, slidable mounting is at the epaxial fixed cover in location, connect the spanner that covers fixedly and rotate the hook claw of connecting and keeping away from fixed cover one end both sides epaxially in location, be circumference fixed connection between fixed cover and the location axle, the one side that the one end that the hook claw is close to fixed cover is equipped with and fixes cover matched with oblique profile, the one end of keeping away from fixed cover has inside crotch, the coal sample jar is including a jar body, install the air cock on the jar body and the sealing plug that is used for the sealed jar body that links to each other with jar body screw thread. The utility model discloses a fixed cover of pushing down makes the shrinkage of hook claw lower part fix the sealing plug on supplementary sealing device to exert to the spanner and screw up the power and carry out threaded connection with the sealing plug with jar body, avoid because of the manpower is screwed up not enough the coal sample jar that causes and is revealed, improved the reliability of coal seam gas content test result.

Description

Auxiliary sealing device and coal sample tank with same

Technical Field

The utility model belongs to the technical field of the coal mine safety, a supplementary sealing device and a coal sample jar with supplementary sealing device are related to.

Background

Coal resources are still the main primary energy of our country in the middle and long term. Coal mine gas (also called coal bed gas) is a combustible gas which takes methane as a main component and exists in coal and coal-series formations, and when the concentration is within a certain range, the gas is exploded when meeting open fire. Coal mine gas is one of main threats of mine coal safety mining, and the clear coal seam occurrence rule is the key point for implementing gas disaster and coal seam gas resource development in a mine. At present, the gas content of an underground coal seam of a coal mine is mainly determined by a direct method, wherein a sampling device is applied to place a coal sample into a coal sample tank, and then the gas content of the coal seam is calculated according to parameters such as underground desorption amount, ground crushing amount and the like. However, in the coal sample tank commonly used at present, the air tap and the valve are arranged into a whole, the lower part of the coal sample tank is connected with the sealing cover, the sealing cover is in threaded connection with the coal sample tank body, and in the screwing process of the sealing cover, the wall surface of the sealing cover is extruded and arranged on the sealing ring on the annular opening of the coal sample tank to finally realize the sealing of the coal sample containing gas. The sealing mode depends on the tightening degree of the sealing cover and only depends on the manual mode. In the practical application process, the method has great defects, and the reliability of the coal bed gas content test result is greatly reduced due to the fact that the operator does not screw the sealing cover to cause gas leakage of the coal sample tank under most conditions.

Therefore, developing relevant technical challenges, improving the sealing of the coal sample tank and the coal sample tank, and realizing reliable sealing of the drilled coal sample are key technical problems to be solved urgently by coal mine safety technical workers in China at present

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an auxiliary seal device and have auxiliary seal device's coal sample jar realizes boring the reliable sealed of getting the coal sample, promotes the reliability of coal seam gas content test result.

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

on the one hand, the utility model provides an auxiliary sealing device, including location axle, slidable mounting at the epaxial fixed cover in location and rotate the connection and keep away from the hook of fixed cover one end both sides in the location epaxial.

The fixing cover is circumferentially and fixedly connected with the positioning shaft, one side, close to the positioning shaft, of one end, close to the fixing cover, of the hook claw is provided with an inclined profile matched with the fixing cover, and one end, far away from the fixing cover, of the hook claw is provided with an inward hook.

The utility model discloses a hook catches on the arch on the excircle of sealing plug, makes the inclined plane of fixed cover extrusion hook upper end through pushing down fixed cover to make the hook lower part shrink, firmly fix the sealing plug on this device.

Further, a first spring is arranged between the positioning shaft and the fixing cover to maintain the axial relative position between the fixing cover and the positioning shaft, so that the fixing cover cannot slide downwards to extrude the hook claw under the action of the first spring under the condition that external force is not applied to the fixing cover.

Furthermore, a second spring is arranged between the positioning shaft and one end, far away from the fixing cover, of the hook claw so as to maintain the radial relative position of one end, far away from the fixing cover, of the hook claw and the positioning shaft, so that the hook part of the hook claw is opened towards two sides and cannot be attached to the positioning shaft under the condition of no external force, and the hook claw is conveniently and preliminarily mounted on the sealing plug.

Furthermore, be spline connection between fixed cover and the location axle, adopt spline connection to make the circumferential force transmission between fixed cover and the location axle more stable.

Furthermore, the location axle is the step shaft, keeps away from the one end of fixed cover is the major diameter end, adopts the step shaft to make the manufacturing and the installation of this device more convenient.

Furthermore, the one end that fixed cover was kept away from to the location axle is equipped with the central point that is used for the location and fixes a position protruding for this device's location is more accurate.

The utility model also provides a coal sample jar with supplementary sealing device, including a jar body, sealing plug and the air cock that is used for the sealed jar body, still include supplementary sealing device, the sealing plug is connected to the hook, one side of keeping away from the sealing plug on the jar body is established to the air cock.

Further, threaded connection is adopted between the sealing plug and the tank body, an inner wall boss is arranged on one side, close to the tank bottom, of the joint of the tank body and the sealing plug, and a sealing ring matched with the inner wall boss is arranged on one side, close to the tank bottom, of the sealing plug.

Furthermore, a fixedly connected wrench is arranged at one end of the fixed cover, which is far away from the sealing plug.

The utility model discloses still provide another kind of coal sample jar that has supplementary sealing device, including a jar body, sealing plug and the air cock that is used for the sealed jar body, still include supplementary sealing device, the sealing plug is connected to the hook, the one end that fixed cover was kept away from to the location axle is equipped with the central location arch that is used for the location, be equipped with the central location blind hole on the sealing plug, the air cock is established in the one side of keeping away from the sealing plug on the jar body.

The beneficial effects of the utility model reside in that:

1. the utility model provides an auxiliary sealing device, a sealing plug for supplementary installation, through the central location blind hole on the protruding location sealing plug of central location, the hook catches on the arch on the excircle of sealing plug, make the inclined plane of fixed cover extrusion hook upper end through pushing down fixed cover, thereby make the shrink of hook lower part, firmly fix the sealing plug on this device, then adopt the rotatory sealing plug of spanner to twist the sealing plug in the sealing port that sets up on the jar body, the sealed not tight leakage that causes that tightly screws up that leads to that has avoided only relying on the manpower.

2. The utility model provides a coal sample jar with supplementary sealing device screws up the sealing plug through supplementary sealing device, avoids the coal sample jar to reveal to with one side that the sealing plug was kept away from to the air cock setting on the jar body, with the installation of cooperation sealing plug, make the installation of sealing plug more convenient, improved the reliability of coal seam gas content test result.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a secondary seal;

fig. 2 is a schematic structural diagram of a coal sample tank with an auxiliary sealing device.

Reference numerals: 1-a fixed cover, 2-a positioning shaft, 3-a wrench, 4-a first spring, 5-a second spring, 6-a claw, 7-a center positioning bulge, 8-a center positioning blind hole, 9-a sealing plug, 10-a sealing ring, 11-an inner wall boss, 12-a tank body, 13-an air tap and 14-a needle valve.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example 1

Referring to fig. 1, an auxiliary sealing device includes a positioning shaft 2, a fixing cover 1 slidably mounted on the positioning shaft 2, a wrench 3 connected to the fixing cover 1, and hooks 6 rotatably connected to two sides of one end of the positioning shaft 2 far from the fixing cover 1.

Fixed cover 1 and location are circumference fixed connection between the axle 2, the one side that the one end that the gib claw 6 is close to fixed cover 1 is close to location axle 2 is equipped with the profile that inclines with fixed cover 1 matched with, and the one end of keeping away from fixed cover 1 has inside crotch.

Specifically, the positioning shaft 2 is a stepped shaft, wherein one end far away from the fixing cover 1 is a large-diameter end, a central positioning protrusion 7 is arranged at one end far away from the fixing cover 1 of the positioning shaft 2, the fixing cover 1 and the positioning shaft 2 are in axial sliding connection through splines, a first spring 4 located between the fixing cover 1 and the positioning shaft 2 is arranged in the axial direction of the positioning shaft 2 to maintain the axial relative position of the fixing cover 1 and the positioning shaft 2, the number of the first springs 4 is preferably two, and a second spring 5 located at one end far away from the fixing cover 1 of the positioning shaft 2 and the hook claw 6 is arranged in the radial direction of the positioning shaft 2 to maintain the radial relative position of one end far away from the fixing cover 1 of the hook claw 6 and the positioning shaft 2, so that the hook of the hook claw 6 is opened at a certain distance without the action of external force, and is convenient to be installed on the sealing plug.

Example 2

Referring to fig. 2, the coal sample tank with the auxiliary sealing device comprises a tank body 12, a sealing plug 9 and an air faucet 13, wherein the sealing plug 9 is used for sealing the tank body 12, the auxiliary sealing device is further included, the hook claw 6 is connected with the sealing plug 9, the sealing plug 9 is in threaded connection with the tank body 12, a central positioning blind hole 8 is formed in the sealing plug 9, and the air faucet 13 is arranged on one side, far away from the sealing plug 9, of the tank body 12.

Specifically, supplementary sealing device is in embodiment 1, one side that the junction of jar body 12 and sealing plug 9 is close to the tank bottoms is equipped with inner wall boss 11, one side that sealing plug 9 is close to the tank bottoms is equipped with and inner wall boss 11 matched with sealing washer 10, be equipped with the needle valve 14 that is used for controlling air cock 13 on the air cock 13.

The utility model realizes the installation and positioning of the auxiliary sealing device relative to the sealing plug by the cooperation of the central positioning bulge 7 and the central positioning blind hole 9, ensures the positioning accuracy of the auxiliary sealing device, enables the fixing cover 1 to extrude the inclined plane at the upper end of the hook claw 6 by pressing down the fixing cover 1, thereby the lower part of the hook claw 6 is contracted, the hook claw 6 hooks the bulge on the excircle of the sealing plug 9, the sealing plug 9 is firmly fixed on the auxiliary sealing device, after the fixation is finished, external force is applied to the wrench 3 to drive the fixed cover 1 to rotate so as to drive the positioning shaft 2, the positioning shaft 2 drives the hook claw 6, the hook claw 6 drives the sealing plug 9 to rotate, it is achieved that a greater tightening force is applied to the sealing plug 9 by means of the wrench 3, whereby the sealing plug 9 is screwed into the internal thread provided on the can body, and the sealing plug 9 extrudes the sealing ring 10, so that the effective sealing of the coal sample tank is realized, and the leakage of the coal sample tank caused by untight sealing caused by manual screwing is avoided. The utility model discloses with one side that sealing plug 9 was kept away from to air cock 13 setting on jar body 12 to cooperation sealing plug 9's installation makes sealing plug 9's installation more convenient, has improved the reliability of coal seam gas content test result.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the scope of the claims of the present invention.

Claims

1. An auxiliary sealing device, characterized in that: comprises a positioning shaft (2), a fixed cover (1) which is slidably arranged on the positioning shaft (2), and hook claws (6) which are rotatably connected to two sides of one end of the positioning shaft (2) far away from the fixed cover (1);

fixed cover (1) and location are circumference fixed connection between axle (2), the one side that the one end that the gib claw (6) is close to fixed cover (1) is close to location axle (2) is equipped with the profile to one side with fixed cover (1) matched with, and the one end of keeping away from fixed cover (1) has inside crotch.

2. A supplementary seal arrangement according to claim 1, wherein: a first spring (4) is arranged between the positioning shaft (2) and the fixed cover (1) to maintain the axial relative position of the fixed cover (1) and the positioning shaft (2).

3. A supplementary seal arrangement according to claim 1, wherein: and a second spring (5) is arranged between the positioning shaft (2) and one end of the hook claw (6) far away from the fixed cover (1) so as to maintain the radial relative position of one end of the hook claw (6) far away from the fixed cover (1) and the positioning shaft (2).

4. A supplementary seal arrangement according to claim 1, wherein: the fixed cover (1) is connected with the positioning shaft (2) through a spline.

5. A supplementary seal arrangement according to claim 1, wherein: the positioning shaft (2) is a stepped shaft, and one end far away from the fixed cover (1) is a large-diameter end.

6. A supplementary seal arrangement according to claim 1, wherein: and a central positioning bulge (7) for positioning is arranged at one end of the positioning shaft (2) far away from the fixed cover (1).

7. The utility model provides a coal sample jar with supplementary sealing device, includes jar body (12), is used for sealing up sealing plug (9) and air cock (13) of jar body (12), its characterized in that: -the auxiliary sealing device according to any of claims 1 to 5, wherein the hook (6) is connected to the sealing plug (9) and the air tap (13) is provided on the side of the can (12) remote from the sealing plug (9).

8. The coal sample tank with the auxiliary sealing device as claimed in claim 7, wherein: the sealing plug (9) is in threaded connection with the tank body (12), an inner wall boss (11) is arranged on one side, close to the tank bottom, of the joint of the tank body (12) and the sealing plug (9), and a sealing ring (10) matched with the inner wall boss (11) is arranged on one side, close to the tank bottom, of the sealing plug (9).

9. The coal sample tank with the auxiliary sealing device as claimed in claim 8, wherein: and a fixedly connected wrench (3) is arranged at one end of the fixed cover (1) far away from the sealing plug (9).

10. The utility model provides a coal sample jar with supplementary sealing device, includes jar body (12), is used for sealing up sealing plug (9) and air cock (13) of jar body (12), its characterized in that: the auxiliary sealing device further comprises an auxiliary sealing device according to claim 6, the hook claw (6) is connected with a sealing plug (9), a central positioning blind hole (8) is formed in the sealing plug (9), and the air tap (13) is arranged on one side, far away from the sealing plug (9), of the tank body (12).