CN210113373U

CN210113373U - High-pressure water injector for hydraulic punching of coal mine

Info

Publication number: CN210113373U
Application number: CN201920918102.XU
Authority: CN
Inventors: 陈刚
Original assignee: Xuzhou Jietu Machinery Co Ltd
Current assignee: Xuzhou Jietu Machinery Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-02-25
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a colliery water conservancy is punched a hole and is used high-pressure water injector, which comprises a joint, it has the thread groove meshing to be connected with the casing to open on the joint through its one end face, open the inside of casing has communicating first dead slot, second dead slot and third dead slot, there is the end cover through bolted connection on the terminal surface that the joint was kept away from to the casing, and the casing rotates through its inside connecting device who is equipped with and is connected with the hollow shaft, the one end that the joint was kept away from to the hollow shaft runs through the end cover and is connected with direct pipeline, the one end that the hollow shaft was kept away from to direct pipeline is connected with the elbow pipeline, this device has adopted concealed hollow shaft and has joined in marriage first bearing and second bearing, and use the casing to wrap up it, thereby axial force can.

Description

High-pressure water injector for hydraulic punching of coal mine

Technical Field

The utility model relates to a hydraulic punching equipment technical field specifically is a colliery hydraulic punching uses high-pressure water injector.

Background

Most of coal mine disasters appearing in recent years come from rock burst and gas outburst, the most effective treatment method at home and abroad is just to process the disasters in a drilling pressure relief mode at present, the most effective drilling pressure relief operation is to utilize a hydraulic slotting technology at present, namely, after a hole is drilled to a certain depth by a drilling machine, high-pressure water above 20 MPa is used for carrying out rotary jet cutting on the drilled hole, and a drilling and punching integrated puncher, a high-pressure sealing drill rod and a high-pressure water injection device are needed to be used at this time, because the highest punching pressure can reach 50 MPa, most of the existing high-pressure water injection devices generally cannot meet the use requirements or have short service life, and the high-pressure water injector for coal mine hydraulic punching is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colliery water conservancy punches a hole and uses high-pressure water injector 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: the utility model provides a colliery water conservancy is punched a hole and is used high-pressure water injector, includes the joint, it has the thread groove meshing to be connected with the casing to connect to open on its one end face, open the inside of casing has communicating first dead slot, second dead slot and third dead slot, there is the end cover through bolted connection on the casing keeps away from a terminal surface of joint, and the casing rotates through its inside connecting device who is equipped with and is connected with the hollow shaft, the one end that the joint was kept away from to the hollow shaft runs through the end cover and is connected with straight-through pipeline, the one end that the hollow shaft was kept away from to straight.

Preferably, the connecting device comprises a sealing element arranged inside the first empty groove and a compression nut arranged inside the second empty groove, the third empty groove is internally provided with a first bearing and a second bearing respectively, the hollow shaft is located at one end outside fixedly connected with baffle plate inside the third empty groove, the outer ring of the first bearing is tightly attached to the wall of the third empty groove, the inner ring is tightly attached to the hollow shaft, one side of the second bearing is tightly attached to the end cover, and the other side of the second bearing is tightly attached to the baffle plate.

Preferably, the end cover is composed of circular plates and annular bosses, the circular plates are different in diameter, the diameter of each circular plate is equal to the outer diameter of the shell, the annular bosses are tightly attached to one side of the second bearing, and inner rings of the circular plates are not in contact with the hollow shaft.

Preferably, the side face of one end, far away from the shell, of the joint is provided with a plurality of circular grooves, and the inside of each circular groove is provided with a rubber ring.

Preferably, the straight-through pipeline is composed of two first fixing blocks and a connecting pipe, the two first fixing blocks are respectively and fixedly connected to two ends of the connecting pipe, a through hole is formed in each first fixing block, the bent-through pipeline is composed of a second fixing block and a bent pipe, and the through hole is also formed in the second fixing block.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a first bearing, the cooperation of second bearing and end cover, the inside at the casing is fixed to the one end of hollow shaft has been realized, make the hollow shaft can not break away from the inside of casing, and can make between casing and the second bearing rotation each other, then the one end of casing is passed through screw thread and joint interconnect, the hollow shaft is located the outside one end of casing and is led to pipeline interconnect through direct pipeline and bend, the joint can be with the high-pressure drilling rod and the puncher interconnect of different specifications, and bend leads to the pipeline and can connect interconnect with the water injection, this device has adopted concealed hollow shaft and has been joined in marriage first bearing and second bearing, and use the casing to wrap up it, thereby axial force can easily sealed rotation when can effectually offsetting the high pressure.

Drawings

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

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 2 according to the present invention

Figure 4 is an exploded view of figure 2 in accordance with the present invention;

FIG. 5 is an enlarged view of the point B of FIG. 4 according to the present invention;

fig. 6 is an exploded view of the first bearing, hollow shaft and second bearing of the present invention;

fig. 7 is an exploded view of the hollow shaft and seal of the present invention;

fig. 8 is an exploded view of the hollow shaft, straight through duct and elbow duct of the present invention.

In the figure: 1. the joint comprises a joint body, 2, a shell body, 3, an end cover, 4, a straight-through pipeline, 401, a first fixing block, 402, a connecting pipe, 5, a bent-through pipeline, 501, a second fixing block, 502, a bent pipe, 6, a thread groove, 7, a first empty groove, 8, a second empty groove, 9, a third empty groove, 10, a sealing piece, 11, a compression nut, 12, a first bearing, 13, a second bearing, 14, a hollow shaft, 15, a baffle, 16, a rubber ring, 17, a through groove, 18 and a circular groove.

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.

Referring to fig. 1-8, the present invention provides a technical solution: a high-pressure water injector for hydraulic punching of a coal mine comprises a connector 1, wherein threads are arranged on the connector 1 (the thread positions are shown in figure 1), the connector 1 can be connected with high-pressure drill rods and punches with different specifications through the threads, the connector 1 is connected with a shell 2 in a meshed mode through a thread groove 6 formed in one end face of the connector 1, the shell 2 is also provided with threads which can be connected with the thread groove 6 in a meshed mode (the threads on the wall of the thread groove 6 are internal threads), so that the connector 1 is connected with the connector 1, a first empty groove 7, a second empty groove 8 and a third empty groove 9 which are communicated are formed in the shell 2, when the shell 2 is connected with the connector 1, the first empty groove 7, the second empty groove 8 and the third empty groove 9 are farther away from the connector 1, the inner diameters of the first empty groove 7, the second empty groove 8 and the third empty groove 9 are sequentially increased (shown in figure 4), when the shell 2 and the joint 1 are connected with each other, the first empty groove 7 can be communicated with the thread groove 6, an end face of the shell 2 far away from the joint 1 is connected with an end cover 3 through a bolt, the end cover 3 can fix components in the shell 2 so as not to fall off from the shell 2, the shell 2 is rotatably connected with a hollow shaft 14 through a connecting device arranged in the shell 2, one end of the hollow shaft 14 in the shell 2 extends to the inside of the first empty groove 7, the size of the hollow shaft is changed along with the size change of the three empty grooves (as shown in figure 7), one end of the hollow shaft 14 far away from the joint 1 penetrates through the end cover 3 and is connected with a straight-through pipeline 4, one end of the straight-through pipeline 4 far away from the hollow shaft 14 is connected with a bent-through pipeline 5, one end of the hollow shaft 14 near the straight-through pipeline 4 extends to the inside of a through groove 17 formed, one end of the elbow pipeline 5 close to the straight pipeline 4 also extends to the inside of a through groove 17 formed in the straight pipeline 4, one ends of the hollow shaft 14 and the elbow pipeline 5 positioned in the through groove 17 are fixedly connected with a plurality of convex circular rings, and the wall of the through groove 17 is provided with a corresponding groove, as shown in figure 2, the device has matched inner diameter surface size after installation, smooth surface can reduce the resistance of water flow in the device, one end of the joint 1 far away from the shell 2 is connected with a high-pressure drill rod and a puncher, one end of the elbow pipe 5 far away from the straight pipe 4 is connected with a water injection joint, water enters the device from the elbow pipe 5, then flows into the high-pressure drill rod and the puncher which are connected with the joint 1 through the through hole on the bottom of the thread groove 6 after passing through the straight-through pipeline 4, the hollow shaft 14 and the first empty groove 7 in sequence.

Specifically, the connecting device comprises a sealing element 10 arranged on the first empty groove 7, a plurality of sealing rings arranged on the sealing element 10, a compression nut 11 arranged in the second empty groove 8, a first bearing 12 and a second bearing 13, wherein water can be prevented from flowing out from a gap between a hollow shaft 14 and the bottom of the first empty groove 7, the third empty groove 9 is internally provided with the first bearing 12 and the second bearing 13, the compression nut 11 is positioned between the sealing element 10 and the first bearing 12, the first bearing 12 can compress the sealing element 10 through the compression nut 11, so that a better sealing effect can be achieved, a baffle plate 15 is fixedly connected to the outer side of one end of the hollow shaft 14 positioned in the third empty groove 9, the baffle plate 15 plays a role in connecting and positioning, the outer ring of the first bearing 12 is tightly attached to the wall of the third empty groove 9, and the inner ring is tightly attached to the hollow shaft 14 (and the compression nut 11 is tightly attached to the hollow shaft 11, Baffle 15 is the inner circle with the contact surface of first bearing 12 to play the effect that reduces friction), one side and the end cover 3 of second bearing 13 closely laminate, and the opposite side closely laminates with baffle 15, and the setting up of first bearing 12 and second bearing 13 can make the inside rotation at casing 2 that hollow shaft 14 is better, and first bearing 12 is deep groove ball bearing, and rotation each other between its inner circle and the outer lane, and second bearing 13 is plane bearing, its both sides rotation each other.

Specifically, the end cap 3 is composed of a circular plate having a diameter equal to the outer diameter of the housing 2 and having a circular boss closely attached to the right side of the second bearing 13, and the inner ring of the circular plate is not in contact with the hollow shaft 14, so that friction is not generated, and the left and right sides of the second bearing 13 have different sizes (as shown in fig. 3), the left side of the second bearing 13 is not in contact with the housing 2, the right side of the second bearing 13 is not in contact with the hollow shaft 14, and the two sides of the second bearing 13 can rotate relatively, so that friction is reduced, and the service life is prolonged.

Specifically, a plurality of circular grooves 18 are formed in the side face of one end, away from the shell 2, of the joint 1, a rubber ring 16 is arranged inside each circular groove 18, and the rubber ring 16 can play a certain sealing role when the joint 1 is connected with a high-pressure drill rod and a puncher.

Specifically, the straight-through pipeline 4 is composed of two first fixing blocks 401 and a connecting pipe 402, the two first fixing blocks 401 are respectively and fixedly connected to two ends of the connecting pipe 402, through holes are formed in the first fixing blocks 401, screws can penetrate through the through holes in the first fixing blocks 401 and then are connected with an external drill frame to fix the device, the bent-through pipeline 5 is composed of a second fixing block 501 and a bent pipe 502, through holes are also formed in the second fixing block 501, and the screws can penetrate through the through holes in the second fixing block 501 and then are connected with the external drill frame to fix the device.

The working principle is as follows: during installation, the connector 1 is connected with a corresponding high-pressure drill rod or a puncher through threads on the connector, the elbow pipeline 5 is connected with a water injection connector, the straight pipeline 4 and the elbow pipeline 5 are fixed on a drill frame (or at a specified position) through screws after connection is finished, the installation of the device can be completed, the device can be started after the installation is finished, water flow can sequentially pass through the straight pipeline 4 and the hollow shaft 14 after the device works, and finally flows into the high-pressure drill rod and the puncher which are connected with the connector 1, the shell 2 and the connector 1 can rotate along with the high-pressure drill rod and the puncher when the device works, and the hollow shaft 14, the straight pipeline 4 and the elbow pipeline 5 cannot rotate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a colliery is high-pressure water injector for water conservancy punching, includes joint (1), its characterized in that: the joint is characterized in that the joint (1) is connected with a shell (2) through a threaded groove (6) formed in one end face of the joint in a meshed mode, a first empty groove (7), a second empty groove (8) and a third empty groove (9) which are communicated with each other are formed in the shell (2), an end face, away from the joint (1), of the shell (2) is connected with an end cover (3) through bolts, the shell (2) is rotatably connected with a hollow shaft (14) through a connecting device arranged in the shell, one end, away from the joint (1), of the hollow shaft (14) penetrates through the end cover (3) and is connected with a straight-through pipeline (4), and one end, away from the hollow shaft (14), of the straight-through pipeline (4) is connected.

2. The high-pressure water injector for hydraulic punching of coal mines according to claim 1, characterized in that: connecting device is including establishing sealing member (10) inside first dead slot (7) and establishing gland nut (11) inside second dead slot (8), the inside of third dead slot (9) is equipped with first bearing (12) and second bearing (13) respectively, hollow shaft (14) are located one end outside fixedly connected with baffle (15) inside third dead slot (9), the outer lane of first bearing (12) and the cell wall of third dead slot (9) closely laminate, and the inner circle closely laminates with hollow shaft (14), one side and end cover (3) of second bearing (13) closely laminate, and the opposite side closely laminates with baffle (15).

3. The high-pressure water injector for hydraulic punching of coal mines according to claim 2, characterized in that: the end cover (3) is composed of circular plates and annular bosses, the diameters of the circular plates are different from each other, the diameters of the circular plates are equal to the outer diameter of the shell (2), the annular bosses are tightly attached to one side of the second bearing (13), and the inner rings of the circular plates are not in contact with the hollow shaft (14).

4. The high-pressure water injector for hydraulic punching of coal mines according to claim 1, characterized in that: a plurality of circular grooves (18) are formed in the side face, away from the shell (2), of one end of the joint (1), and a rubber ring (16) is arranged inside each circular groove (18).

5. The high-pressure water injector for hydraulic punching of coal mines according to claim 1, characterized in that: the straight-through pipeline (4) is composed of two first fixing blocks (401) and a connecting pipe (402), the two first fixing blocks (401) are fixedly connected to two ends of the connecting pipe (402) respectively, a through hole is formed in each first fixing block (401), the bent-through pipeline (5) is composed of a second fixing block (501) and a bent pipe (502), and the through hole is also formed in each second fixing block (501).