CN210770542U

CN210770542U - Mining explosion-proof electric ball valve

Info

Publication number: CN210770542U
Application number: CN201921810165.XU
Authority: CN
Inventors: 樊有问; 高歌; 刘建华
Original assignee: Xuzhou Zhong'an Explosion Proof Electric Appliance Manufacturing Co ltd
Current assignee: Xuzhou Zhong'an Explosion Proof Electric Appliance Manufacturing Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-16
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a mining flame-proof type electric ball valve, which comprises a seat plate, the bottom of bedplate is provided with matched with ball valve with it, the top of bedplate is provided with the flame proof casing, one side of flame proof casing is provided with power cord gatherer, the middle part card of bedplate is equipped with the disk seat, the inside of disk seat is provided with the copper sheathing, the inside of copper sheathing is provided with matched with pivot with it, the flame proof casing includes epitheca and matched with inferior valve with it, the top of inferior valve and the bottom of epitheca all are provided with flange, the seal groove has been seted up at the flange's at inferior valve top, the flange's of epitheca bottom be provided with seal groove matched with sealing washer one, power cord gatherer includes the connecting tube, the inboard of connecting tube is provided. Has the advantages that: the replacement and the maintenance of the motor element in the electric ball valve are convenient to realize, and the use requirements of people can be better met.

Description

Mining explosion-proof electric ball valve

Technical Field

The utility model relates to a ball valve technical field particularly, relates to a mining flame-proof type electric ball valve.

Background

In recent years, rapid development of the industry in China has caused environmental deterioration, and dust is also a major pollutant causing environmental problems. The most serious of four occupational hazards (death due to industrial injury, dust, poison and explosion) of mine enterprises in China belongs to dust hazard. Dust is inhaled by workers and, after a certain dose is deposited by the respiratory system, pneumoconiosis occurs. Pneumoconiosis is the most serious occupational disease which harms the health of vast workers, and is mainly distributed in industries such as coal, metallurgy, machinery, building materials, chemical engineering, petroleum, light industry and the like.

Especially, can produce a large amount of dusts in the colliery borehole operation production process, consequently, in order to guarantee operation personnel's safety, all install explosion-proof type electric ball valve in the mine, however, the removable seal structure of current mining explosion-proof electric ball valve is few, leads to when electric ball valve need change electrical components and overhaul, and it is comparatively troublesome to dismantle, can not satisfy people's user demand well.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a mining flame-proof type electric ball valve to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

a mining explosion-proof electric ball valve comprises a seat plate, wherein a ball valve matched with the seat plate is arranged at the bottom of the seat plate, an explosion-proof shell is arranged at the top of the seat plate, and a power line lead-in device is arranged on one side of the explosion-proof shell;

a valve seat is clamped in the middle of the seat plate, a copper sleeve is arranged inside the valve seat, a rotating shaft matched with the copper sleeve is arranged inside the copper sleeve, and the bottom end of the rotating shaft is connected with the ball valve;

the explosion-proof shell comprises an upper shell and a lower shell matched with the upper shell, the bottom of the lower shell is connected with the seat plate through a cover plate, connecting flanges are arranged at the top of the lower shell and the bottom of the upper shell and are connected through a plurality of screws I, a sealing groove is formed in the top of the connecting flange at the top of the lower shell, a sealing ring I matched with the sealing groove is arranged at the bottom of the connecting flange at the bottom of the upper shell, a brushless motor is arranged inside the lower shell, a reduction box is arranged at the bottom of the brushless motor, and one side of the reduction box is connected with the top end of the rotating shaft;

the power cord leading-in device includes the junction tube, just the one end of junction tube with the top fixed connection of inferior valve one side, the inboard of junction tube is provided with the seal ring, the seal ring is close to the one end of inferior valve is provided with sealing washer two, the inboard of seal ring is provided with gland nut.

Furthermore, in order to improve the sealing performance between the rotating shaft and the copper sleeve, an O-shaped sealing ring is arranged between the copper sleeve and the rotating shaft.

Furthermore, in order to facilitate the connection between the cover plate and the seat plate, the cover plate is fixedly connected with the seat plate through a second screw, and spring washers are arranged between the second screw and the seat plate.

Further, in order to facilitate the control of the brushless motor, a PCB board is further disposed inside the lower casing, and the PCB board is electrically connected with the brushless motor through a wire.

Furthermore, in order to facilitate the installation and connection of the copper sleeve and the rotating shaft, a shaft head snap spring matched with the rotating shaft is arranged at the top of the copper sleeve.

Furthermore, in order to meet the use requirement of the flameproof shell, arc-resistant paint is sprayed on the inner cavity of the flameproof shell, and finish paint is sprayed on the surface of the flameproof shell.

Furthermore, in order to improve the explosion-proof effect of the ball valve, an explosion-proof joint surface is arranged between the top of the seat plate and the contact surface of the cover plate, and the explosion-proof joint surface is treated by phosphating or spraying anti-rust oil.

Furthermore, in order to facilitate the installation and connection between the copper sleeve and the valve seat, the copper sleeve and the valve seat are in interference fit.

The utility model has the advantages that: through the cooperation use of epitheca, inferior valve, flange, seal groove and sealing washer one for it can realize that the sealed of flame proof casing can dismantle the connection, thereby is convenient for realize motor element's in the electric ball valve change and maintenance, makes it can satisfy in people's user demand better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a mining explosion-proof electric ball valve according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure according to A in FIG. 1;

FIG. 3 is a schematic diagram of a connection between a seat plate and a brushless motor in a mining flame-proof electric ball valve according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a seat plate in a mining explosion-proof electric ball valve according to the embodiment of the utility model.

In the figure:

1. a seat plate; 2. a ball valve; 3. an explosion-proof shell; 4. a power line lead-in device; 5. a valve seat; 6. a copper sleeve; 7. a rotating shaft; 8. an upper shell; 9. a lower case; 10. a cover plate; 11. a connecting flange 12 and a sealing groove; 13. a first sealing ring; 14. a brushless motor; 15. a reduction gearbox; 16. a wire connecting pipe 17 and a seal ring; 18. a second sealing ring; 19. a compression nut 20, an O-shaped sealing ring; 21. PCB 22, spindle nose jump ring 23, flame proof faying face.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a mining flame-proof type electric ball valve.

The utility model is further explained by combining the attached drawings and the detailed embodiment, as shown in fig. 1-4, according to the embodiment of the utility model, the mining flame-proof electric ball valve comprises a seat plate 1, the bottom of the seat plate 1 is provided with a ball valve 2 matched with the seat plate, the top of the seat plate 1 is provided with a flame-proof shell 3, and one side of the flame-proof shell 3 is provided with a power line lead-in device 4;

a valve seat 5 is clamped in the middle of the seat plate 1, a copper sleeve 6 is arranged inside the valve seat 5, a rotating shaft 7 matched with the copper sleeve 6 is arranged inside the copper sleeve 6, and the bottom end of the rotating shaft 7 is connected with the ball valve 2;

the flameproof housing 3 comprises an upper housing 8 and a lower housing 9 matched with the upper housing, the bottom of the lower housing 9 is connected with the seat plate 1 through a cover plate 10, connecting flanges 11 are arranged at the top of the lower housing 9 and the bottom of the upper housing 8, the connecting flanges 11 are connected through a plurality of screws, a sealing groove 12 is formed in the top of the connecting flange 11 at the top of the lower housing 9, a sealing ring I13 matched with the sealing groove 12 is arranged at the bottom of the connecting flange 11 at the bottom of the upper housing 8, a brushless motor 14 is arranged inside the lower housing 9, a reduction gearbox 15 is arranged at the bottom of the brushless motor 14, and one side of the reduction gearbox 15 is connected with the top end of the rotating shaft 7;

the power cord leading-in device 4 includes wire barrel 16, just wire barrel 16 one end with the top fixed connection of inferior valve 9 one side, wire barrel 16's inboard is provided with seal ring 17, seal ring 17 is close to inferior valve 9's one end is provided with two sealing washer 18, seal ring 17's inboard is provided with gland nut 19.

By means of the technical scheme, the upper shell 8, the lower shell 9, the connecting flange 11, the sealing groove 12 and the sealing ring I13 are matched for use, so that the sealing detachable connection of the explosion-proof shell 3 can be realized, the replacement and the maintenance of the motor element in the electric ball valve are facilitated, and the use requirements of people can be better met.

In one embodiment, an O-ring 20 is disposed between the copper sleeve 6 and the rotating shaft 7. Through the use of the O-shaped sealing ring 20, a good sealing effect can be achieved.

In one embodiment, the cover plate 10 is fixedly connected with the seat plate 1 through a second screw, and a spring washer is arranged between the second screw and the seat plate 1. By this arrangement, the connection between the cover plate 10 and the seat plate 1 is facilitated.

In one embodiment, a PCB 21 is further disposed inside the lower case 9, and the PCB 21 is electrically connected to the brushless motor 14 through a wire. The control of the brushless motor 14 is facilitated by the use of the PCB board 21.

In one embodiment, the top of the copper sleeve 6 is provided with a spindle head snap spring 22 matched with the rotating shaft 7. Through the use of the shaft head clamp spring 22, the installation and the connection of the copper sleeve 6 and the rotating shaft 7 are convenient to realize.

In one embodiment, the inner cavity of the flameproof housing 3 is sprayed with arc-resistant paint, and the surface of the flameproof housing 3 is sprayed with finish paint. Through the arrangement, the use requirement of the flameproof shell 3 can be better met. During specific application, 1321 arc-resistant gray paint is sprayed on the inner cavity of the explosion-proof shell 3, the surface of the explosion-proof shell 3 is subjected to surface paint spraying treatment after putty spraying is performed by adopting dust spraying primer, the explosion-proof shell 3 needs to be subjected to aging vibration treatment to eliminate stress generated in the machining process, a hydraulic test with the pressure of 1MPa and 12S is kept is required to be performed on the explosion-proof cavity after finish machining, and the explosion-proof shell 3 is qualified because no permanent deformation is generated.

In one embodiment, an explosion-proof joint surface 23 is arranged between the top of the seat plate 1 and the contact surface of the cover plate 10, and the explosion-proof joint surface 23 is treated by phosphating or spraying anti-rust oil. By the arrangement, the explosion-proof joint surface 23 can have a better explosion-proof effect. In the specific application, the explosion-proof joint surface 23 is treated by phosphating or spraying 204-1 anti-rust oil.

In one embodiment, the copper sleeve 6 is in an interference fit with the valve seat 5. By this arrangement, the copper bush 6 and the valve seat 5 can be easily mounted and connected. During the specific application, copper sheathing 6 with the installation between the disk seat 5 is: the copper bush 6 is embedded into the valve seat 5 in an interference manner and then is reamed.

In conclusion, with the help of the technical scheme of the utility model, use through the cooperation of epitheca 8, inferior valve 9, flange 11, seal groove 12 and sealing washer 13 for it can realize that the sealed of flame proof casing 3 can be dismantled and connect, thereby is convenient for realize motor element's change and maintenance in the electric ball valve, makes it can satisfy in people's user demand better.

In the present application, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mining explosion-proof electric ball valve comprises a seat plate (1), and is characterized in that a ball valve (2) matched with the seat plate (1) is arranged at the bottom of the seat plate (1), an explosion-proof shell (3) is arranged at the top of the seat plate (1), and a power line lead-in device (4) is arranged on one side of the explosion-proof shell (3);

a valve seat (5) is clamped in the middle of the seat plate (1), a copper sleeve (6) is arranged inside the valve seat (5), a rotating shaft (7) matched with the copper sleeve (6) is arranged inside the copper sleeve (6), and the bottom end of the rotating shaft (7) is connected with the ball valve (2);

the flameproof shell (3) comprises an upper shell (8) and a lower shell (9) matched with the upper shell, the bottom of the lower shell (9) is connected with the seat plate (1) through a cover plate (10), the top of the lower shell (9) and the bottom of the upper shell (8) are both provided with connecting flanges (11), and the connecting flanges (11) are connected through a plurality of screws I, wherein the top of the connecting flange (11) at the top of the lower shell (9) is provided with a sealing groove (12), and the bottom of the connecting flange (11) at the bottom of the upper shell (8) is provided with a first sealing ring (13) matched with the sealing groove (12), a brushless motor (14) is arranged inside the lower shell (9), a reduction box (15) is arranged at the bottom of the brushless motor (14), one side of the reduction gearbox (15) is connected with the top end of the rotating shaft (7);

power cord leading-in device (4) are including wire barrel (16), just the one end of wire barrel (16) with the top fixed connection of inferior valve (9) one side, the inboard of wire barrel (16) is provided with seal ring (17), seal ring (17) are close to the one end of inferior valve (9) is provided with sealing washer two (18), the inboard of seal ring (17) is provided with gland nut (19).

2. A mining explosion-proof electric ball valve according to claim 1, characterized in that an O-shaped sealing ring (20) is arranged between the copper bush (6) and the rotating shaft (7).

3. The mining explosion-proof electric ball valve according to claim 1, characterized in that the cover plate (10) is fixedly connected with the seat plate (1) through a second screw, and spring washers are arranged between the second screw and the seat plate (1).

4. A mining explosion-proof electric ball valve according to claim 1, characterized in that a PCB (21) is further arranged inside the lower casing (9), and the PCB (21) is electrically connected with the brushless motor (14) through a wire.

5. The mining explosion-proof electric ball valve according to claim 1, characterized in that a shaft head snap spring (22) matched with the rotating shaft (7) is arranged at the top of the copper sleeve (6).

6. The mining explosion-proof electric ball valve according to claim 1, characterized in that an inner cavity of the explosion-proof housing (3) is sprayed with arc-resistant paint, and the surface of the explosion-proof housing (3) is sprayed with finish paint.

7. A mining explosion-proof electric ball valve according to claim 1, characterized in that an explosion-proof joint surface (23) is arranged between the top of the seat plate (1) and the contact surface of the cover plate (10), and the explosion-proof joint surface (23) is treated by phosphating or spraying of rust preventive oil.

8. The mining flameproof electric ball valve according to claim 1, characterized in that the copper sleeve (6) and the valve seat (5) are in interference fit.