Gas discharge device for coal mining

Abstract

The utility model discloses a gas discharge device for coal mining, and particularly relates to the technical field of coal mining, which comprises a device base, support legs are fixed at four corners of the lower end of the device base, a plurality of hydraulic cylinders are fixed at the upper end of the device base in an annular array, and a mounting plate is fixed at output ends of the plurality of hydraulic cylinders together. A through hole is formed in the upper end of the device base, a discharging assembly is further arranged at the lower end of the mounting plate and comprises a multi-stage telescopic pipe fixed to the lower end of the mounting plate, and a hollow sealing ring is fixed to the lower portion of the outer surface of the multi-stage telescopic pipe. According to the gas discharging device for coal mining, the design of the discharging assembly is adopted, when the device discharges gas of a coal mine hole, the sealing ring seals the side wall of the coal mine hole, the working efficiency of the device is improved, meanwhile, the sealing ring can prevent the upper portion of the coal mine hole from being damaged in a supporting mode, and the gas discharging device can be suitable for coal mine holes of different sizes; and the applicability of the device in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a gas discharge device for coal mining. Background Art

[0002] Coal mining is the mining of underground coal. During the coal mining process, gas will be produced. The relative density of gas to air is 0.554. Under standard conditions, the density of gas is 0.716kg / m3. The permeability of gas is 1.6 times that of air. It is difficult to dissolve in water, does not support combustion and cannot sustain breathing. When it reaches a certain concentration, it can cause people to suffocate due to lack of oxygen, and can cause combustion or explosion. Gas exists in the coal body or surrounding rock in a free state and a sorbed state.

[0003] Chinese patent document CN218062372U discloses a gas discharge device for coal mining, including a discharge pipe set up on the exhaust shaft, a sealing disc integrally formed on the discharge pipe, the sealing disc covers the exhaust shaft port, a gas collecting box integrally formed on the upper end of the discharge pipe, a ventilation pipe connected to one side of the gas collecting box, a gas filter structure connected to the other end of the ventilation pipe, a gas booster pump connected to the side of the gas filter structure, a reaction absorption structure connected to the other end of the gas booster pump, an outlet pipe connected to the reaction absorption structure, and a blast structure extending into the exhaust shaft installed on the sealing disc. Advantages of the utility model: better discharge effect, can process the discharged gas.

[0004] However, the device cannot seal the upper part of the coal mine hole during actual use, and the working efficiency of the device during discharge is relatively low. In addition, the device cannot be applied to coal mine holes of different sizes during use, and the applicability of the device is relatively poor. Utility Model Content

[0005] The main purpose of the utility model is to provide a gas emission device for coal mining, which can effectively solve the problems of relatively low working efficiency and relatively poor applicability of the device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A gas emission device for coal mine mining includes a device base, wherein support legs are fixed to the four corners of the lower end of the device base, a plurality of hydraulic cylinders are fixed to a circular array at the upper end of the device base, a mounting plate is commonly fixed to the output ends of the plurality of hydraulic cylinders, a through hole is opened at the upper end of the device base, and an emission component is also provided at the lower end of the mounting plate.

[0008] Preferably, the discharge assembly includes a multi-stage telescopic tube fixed to the lower end of the mounting plate, and the multi-stage telescopic tube extends downward through the through hole, a hollow sealing ring is fixed to the lower portion of the outer surface of the multi-stage telescopic tube, a blower is fixed to the upper end of the mounting plate, one end of the blower is connected to the interior of the multi-stage telescopic tube, a piston is fixed to the lower end of the mounting plate through an extension rod, and a cylinder matching the piston is fixed to the upper end of the device base.

[0009] Preferably, the multi-stage telescopic tube is of hollow design.

[0010] Preferably, the lower portion of the outer surface is also provided with a connection communicating with the interior thereof, and the connection is made between the outer surface and the inner surface via an air pipe.

[0011] Preferably, the sealing ring is made of a soft and elastic material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model adopts the design of a discharge component, and through the mutual cooperation between the cylinder and the sealing ring, air can be filled into the sealing ring when the mounting plate moves downward, so that when the device discharges gas from the coal mine hole, the sealing ring can seal the side wall of the coal mine hole, thereby improving the working efficiency of the device. At the same time, the sealing ring has an elastic design, which can prevent the upper part of the coal mine hole from being damaged, thereby affecting the mining work. At the same time, it can also be applicable to coal mine holes of different sizes, thereby improving the applicability of the device when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic plan view of the discharge assembly of the device of the utility model;

[0016] Figure 3 It is a schematic diagram of the discharge assembly of the device of the utility model;

[0017] Figure 4 For the utility model Figure 3 The enlarged view of point A in the middle;

[0018] Figure 5 It is a plan view of the device of the utility model when in use.

[0019] In the figure: 1. device base; 2. discharge assembly; 11. support leg; 12. hydraulic cylinder; 13. mounting plate; 14. through hole; 21. multi-stage telescopic tube; 22. sealing ring; 23. blower; 24. piston; 25. cylinder; 26. connecting pipe. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 As shown, a gas emission device for coal mine exploitation includes a device base 1, and support legs 11 are fixed to the four corners of the lower end of the device base 1. The multiple support legs 11 facilitate the placement of the device. A plurality of hydraulic cylinders 12 are fixed in a circular array on the upper end of the device base 1. The hydraulic cylinders 12 are of prior art. A mounting plate 13 is commonly fixed to the output ends of the plurality of hydraulic cylinders 12. The plurality of hydraulic cylinders 12 cooperate with each other so that the mounting plate 13 can move upward or downward. A through hole 14 is opened at the upper end of the device base 1, and a discharge component 2 is also provided at the lower end of the mounting plate 13.

[0022] like Figure 2-5 As shown, the discharge assembly 2 includes a multi-stage telescopic tube 21 fixed to the lower end of the mounting plate 13, and the multi-stage telescopic tube 21 penetrates downwardly through the through hole 14, so that the multi-stage telescopic tube 21 can be inserted into the hole opened in the coal mine when the device is in use. At the same time, the multi-stage telescopic tube 21 is hollow in design, and the multi-stage telescopic tube 21 can be inserted into the coal mine hole by using the hydraulic cylinder 12 when the device is in use. A hollow sealing ring 22 is fixed to the lower part of the outer surface of the multi-stage telescopic tube 21, and the sealing ring 22 is made of a soft elastic material, including but not limited to a Elastic rubber, silicone and latex, etc., and due to the hollow design of the sealing ring 22, the sealing ring 22 can expand when filled with air, so that the side wall of the sealing ring 22 fits with the inner wall of the coal mine hole. A blower 23 is fixed to the upper end of the mounting plate 13, and one end of the blower 23 is connected to the inside of the multi-stage telescopic tube 21. Since the multi-stage telescopic tube 21 needs to be inserted into the coal mine hole during operation, the blower 23 can extract the gas in the coal mine hole through the multi-stage telescopic tube 21 during operation, thereby achieving the purpose of gas discharge.

[0023] In addition, a piston 24 is fixed to the lower end of the mounting plate 13 by an extension rod, and a cylinder 25 matched with the piston 24 is fixed to the upper end of the device base 1. The piston 24 cooperates with the cylinder 25 so that the air in the cylinder 25 can be pushed out when the piston 24 moves downward. A connecting pipe 26 communicating with the interior of the cylinder 25 is also provided at the lower part of the outer surface of the cylinder 25. The connecting pipe 26 is connected to the sealing ring 22 by an air pipe, so that the piston 24 can transfer the gas in the cylinder 25 to the sealing ring 22 when it moves downward. Since the sealing ring 22 has an elastic and hollow design, the sealing ring 22 can gradually expand, thereby fitting tightly with the inner wall of the coal mine hole, and further the gas in the coal mine hole can only be discharged through the multi-stage telescopic tube 21.

[0024] In addition, when the device is in use, regardless of the diameter of the coal mine hole, the sealing ring 22 can fit tightly against the inner wall of the coal mine hole (when the diameter of the coal mine hole is small, the sealing ring 22 fits tightly against the inner wall of the coal mine hole, and the sealing ring 22 can extend upward or downward to prevent the sealing ring 22 from damaging the upper part of the coal mine hole, thereby affecting the mining work). At the same time, it can also be suitable for coal mine holes of different sizes, increasing the applicability of the device when in use.

[0025] The specific implementation of this embodiment is as follows: when the device is used, it is first placed at the position where discharge is required, and then the multiple output ends of the multi-stage telescopic tube 21 are extended, and then the output ends of the multiple hydraulic cylinders 12 are controlled to be retracted, and the mounting plate 13 is further moved downward, so that the multi-stage telescopic tube 21 can be extended into the coal mine hole. When the mounting plate 13 moves downward, the piston 24 is fixedly connected to the mounting plate 13 through the extension rod, so that the piston 24 moves downward. At the same time, due to the design of the connecting pipe 26, the piston 24 can push the air in the cylinder 25 into the inside of the sealing ring 22;

[0026] After the air in the cylinder 25 enters the interior of the sealing ring 22, the sealing ring 22 is elastically designed so that the sealing ring 22 gradually expands, thereby fitting tightly with the inner wall of the coal mine hole, which can prevent the external air from entering the coal mine hole during the process of exhausting the coal mine hole, thereby reducing the working efficiency of the device. At the same time, the sealing ring 22 is elastically designed so that when the sealing ring 22 expands, if the side wall has already fitted with the inner wall of the coal mine hole, the sealing ring 22 will extend upward or downward, which can prevent the upper part of the coal mine hole from being damaged, thereby affecting the mining work. At the same time, it can also be applied to coal mine holes of different sizes, thereby improving the applicability of the device when used;

[0027] After the device completes the gas discharge work in the coal mine hole, it controls the output ends of the multiple hydraulic cylinders 12 to extend, further moving the mounting plate 13 upward. When the mounting plate 13 moves upward, the piston 24 is controlled to move upward through the extension rod, so that the air inside the sealing ring 22 is sucked into the cylinder 25, which is convenient for the next use of the device, and then the multiple output ends of the multi-stage telescopic tube 21 are controlled to retract.

[0028] It should be noted that the specific installation method, circuit connection method and control method of the hydraulic cylinder 12, the multi-stage telescopic tube 21 and the piston 22 in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas emission device for coal mining, comprising a device base (1), characterized in that: Support legs (11) are fixed at the four corners of the lower end of the device base (1), a plurality of hydraulic cylinders (12) are fixed in a circular array at the upper end of the device base (1), a mounting plate (13) is commonly fixed to the output ends of the plurality of hydraulic cylinders (12), a through hole (14) is provided at the upper end of the device base (1), and a discharge assembly (2) is also provided at the lower end of the mounting plate (13).

2. A gas discharge device for coal mining according to claim 1, characterized in that: The discharge assembly (2) comprises a multi-stage telescopic tube (21) fixed to the lower end of the mounting plate (13), and the multi-stage telescopic tube (21) extends downward through the through hole (14); a hollow sealing ring (22) is fixed to the lower portion of the outer surface of the multi-stage telescopic tube (21); a blower (23) is fixed to the upper end of the mounting plate (13), one end of the blower (23) is communicated with the interior of the multi-stage telescopic tube (21); a piston (24) is fixed to the lower end of the mounting plate (13) via an extension rod; and a cylinder (25) adapted to the piston (24) is fixed to the upper end of the device base (1).

3. A gas discharge device for coal mining according to claim 2, characterized in that: The multi-stage telescopic tube (21) is of hollow design.

4. A gas discharge device for coal mining according to claim 2, characterized in that: The lower part of the outer surface of the (25) is also provided with (26) which is communicated with the interior thereof, and the (26) is connected to the (22) via an air pipe.

5. A gas discharge device for coal mining according to claim 2, characterized in that: The sealing ring (22) is made of a soft material with elasticity.

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