Dust remover capable of preventing gas outburst

Abstract

The invention discloses a gas outburst prevention dust remover which comprises a dust collection cylinder, a buffer box, a passive pressure buffer mechanism, an active pressure buffer mechanism and a mounting frame, and a spray head for removing dust is arranged at the top of the dust collection cylinder; the buffer box is fixedly communicated with the bottom of the dust collecting cylinder, a slag discharging opening is formed in the bottom of the buffer box, and the buffer box is communicated with a gas drainage pipe; the passive pressure buffering mechanism fixedly communicates with the top of the buffering box. The active pressure buffer mechanism is fixedly communicated with the dust collection cylinder, and a pressure sensor is mounted in the dust collection cylinder and connected with the active pressure buffer mechanism; and the mounting frame is used for fixing the dust collection cylinder on a working surface. According to the dust remover, the purpose of dust falling and removing can be achieved, meanwhile, when gas outburst occurs, the active pressure buffering mechanism and the passive pressure buffering mechanism are used for achieving the dual buffering effect, gas overrun caused by the fact that a large amount of gas enters a roadway is avoided, and the safety of coal mine production is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery manufacturing, and in particular to a dust collector for preventing gas outburst. Background Art

[0002] At present, when drilling holes for preventing sudden outbursts in coal mines, in order to ensure the normal progress of drilling work, it is necessary to discharge the drill cuttings in the borehole in time. There are many slag removal methods now, and most of them use wind slag removal to discharge the drill cuttings in the borehole. Especially in soft coal seams, it is difficult to drill deep holes using other slag removal processes. However, during the wind slag removal process, the flying coal dust causes the dust to seriously exceed the standard, which is also a safety hazard in coal mine production using wind slag removal. In order to reduce the safety hazards generated during the wind slag removal process, a dust collector is set in the discharge channel of the drill cuttings (coal cuttings) during the drilling process to reduce the coal dust through the dust collector.

[0003] However, the flow rate of the existing dust collector gas extraction tube is constant. When the amount of gas gushing out due to gas outburst is greater than the flow rate of the gas extraction pipe, the problem of gas outburst cannot be solved. A large amount of gas flows into the tunnel, causing gas to exceed the limit, which brings great safety hazards to coal mine production.

[0004] Therefore, there is an urgent need to provide a gas outburst prevention dust collector that can solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a dust collector for preventing gas outburst to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides a dust collector for preventing gas outburst, comprising:

[0007] A dust collecting cylinder, wherein a spray head for dust removal is arranged on the top of the dust collecting cylinder;

[0008] A buffer box, the buffer box is fixedly connected to the bottom of the dust collecting cylinder, a slag discharge port is provided at the bottom of the buffer box, and a gas extraction pipe is connected to the buffer box;

[0009] A passive pressure buffer mechanism, wherein the passive pressure buffer mechanism is fixedly connected to the top of the buffer box;

[0010] An active pressure buffer mechanism, wherein the active pressure buffer mechanism is fixedly connected to the dust collecting cylinder, a pressure sensor is installed inside the dust collecting cylinder, and the pressure sensor is connected to the active pressure buffer mechanism;

[0011] A mounting frame is used to fix the dust collecting barrel on a work surface.

[0012] Preferably, the passive pressure buffer mechanism comprises a buffer bag, and the bottom end of the buffer bag is fixedly connected to the buffer box.

[0013] Preferably, the active pressure buffer mechanism includes a buffer cylinder fixedly connected to the dust collecting cylinder, a piston is slidably connected inside the buffer cylinder, a piston rod is fixedly connected to the side of the piston away from the dust collecting cylinder, the end of the piston rod passes through the buffer cylinder and is fixedly connected to a connecting plate, and a gap is provided between the piston rod and the buffer cylinder; a telescopic cylinder is fixedly connected to the outer wall of the buffer cylinder at one end away from the dust collecting cylinder, the end of the telescopic cylinder is fixedly connected to the connecting plate, and the telescopic cylinder is electrically connected to the pressure sensor.

[0014] Preferably, an elastic member is provided between the buffer tube and the connecting plate, and two ends of the elastic member are fixedly connected to the buffer tube and the connecting plate respectively.

[0015] Preferably, the elastic member is a spring, a spring sheet or an elastic rubber.

[0016] Preferably, an anti-protrusion baffle is provided on the drill bit fixing hole of the dust collecting barrel, and the anti-protrusion baffle passes through the mounting frame.

[0017] Preferably, a guide sleeve is provided in the buffer box, the top end of the guide sleeve is communicated with the discharge port of the dust collecting barrel, and a plurality of air holes are provided on the side wall of the guide sleeve.

[0018] Preferably, a guide inclined plate is provided at the inner bottom of the buffer box, a higher end of the guide inclined plate is provided corresponding to the guide sleeve, and a lower end of the guide inclined plate is provided with an arc-shaped guide plate.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The anti-gas outburst dust collector provided by the present invention has an active pressure buffer mechanism on the dust collecting tube, and a passive pressure buffer mechanism and a gas extraction pipe on the buffer box. Even when a gas outburst occurs, the active pressure buffer mechanism and the passive pressure buffer mechanism can be used to buffer the gas, so that the gas entering the dust collector can remain in the dust collector and is not easily leaked. The dust collector of the present invention can achieve the purpose of dust reduction and dust removal, and at the same time, when a large-scale gas outburst occurs, under the effect of double buffering, it can avoid a large amount of gas from entering the tunnel to cause gas exceeding the limit, thereby improving the safety of coal mine production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the dust collector for preventing gas outburst of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the dust collector for preventing gas outburst of the present invention;

[0024] Figure 3 A schematic diagram of the internal structure of the gas outburst prevention dust collector of the present invention from another perspective;

[0025] In the figure: 1. dust collecting cylinder; 2. spray head; 3. buffer box; 4. gas extraction pipe; 5. pressure sensor; 6. mounting bracket; 7. buffer bag; 8. buffer cylinder; 9. piston; 10. piston rod; 11. connecting plate; 12. telescopic cylinder; 13. anti-burst baffle; 14. guide sleeve; 15. guide inclined plate; 16. arc guide plate. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] like Figures 1 to 3 As shown, the present invention provides a dust collector for preventing gas outburst, comprising:

[0028] A dust collecting cylinder 1, the top of which is provided with a spray head 2 for dust removal;

[0029] The buffer box 3 is fixedly connected to the bottom of the dust collecting cylinder 1, a slag discharge port is provided at the bottom of the buffer box 3, and a gas extraction pipe 4 is connected to the buffer box 3;

[0030] A passive pressure buffer mechanism, which is fixedly connected to the top of the buffer box 3;

[0031] An active pressure buffer mechanism, which is fixedly connected to the dust collecting cylinder 1. A pressure sensor 5 is installed inside the dust collecting cylinder 1, and the pressure sensor 5 is connected to the active pressure buffer mechanism;

[0032] The mounting frame 6 is used to fix the dust collecting barrel 1 on the working surface.

[0033] When the present invention is in use, the dust collecting barrel 1 is fixed on the working surface by the mounting frame 6. When drill cuttings enter the dust collecting barrel 1, the spray head 2 is used to spray the drill cuttings, so that the drill cuttings are agglomerated into blocks or particles, which facilitates the drill cuttings to quickly enter the buffer box 3, thereby achieving the effect of dust reduction and dust removal; an active pressure buffer mechanism is provided on the dust collecting barrel 1, and a passive pressure buffer mechanism and a gas extraction pipe 4 are provided on the buffer box 3. Even when encountering a gas outburst, the active pressure buffer mechanism and the passive pressure buffer mechanism can be used to buffer the gas, so that the gas entering the dust collector can be kept in the dust collector and is not easy to leak; the dust collector of the present invention can achieve the purpose of dust reduction and dust removal, and can also avoid the gas exceeding the limit caused by a large amount of gas entering the tunnel when a large gas outburst occurs, thereby improving the safety of coal mine production.

[0034] According to a further optimized solution, the passive pressure buffer mechanism includes a buffer bag 7 , and the bottom end of the buffer bag 7 is fixedly connected to the buffer box 3 .

[0035] To further optimize the solution, the passive pressure buffer mechanism can also adopt a barrel with a telescopic function. The barrel and the gas extraction pipe 4 are coaxially arranged, the barrel is sleeved on the outside of the gas extraction pipe 4, and a sliding sleeve is arranged on the top of the barrel, and the sliding sleeve is sleeved on the gas extraction pipe 4; at this time, the gas extraction pipe 4 is maintained to have a vertical riser of a certain length. When the gas in the buffer box 3 needs to be buffered, the top of the barrel and the gas extraction pipe 4 slide. A sealing structure is provided between the gas extraction pipe 4 and the barrel to ensure the sealing effect between the barrel and the gas extraction pipe 4, and the buffering effect can also be achieved. Moreover, after realizing the buffering function, this structure can slowly discharge the gas in the barrel into the buffer box 3 again under the weight of the barrel to ensure the effective buffering space of the barrel.

[0036] A further optimized solution is that the active pressure buffer mechanism includes a buffer cylinder 8 fixedly connected to the dust collecting cylinder 1, a piston 9 is slidably connected inside the buffer cylinder 8, a piston rod 10 is fixedly connected to the side of the piston 9 away from the dust collecting cylinder 1, the end of the piston rod 10 passes through the buffer cylinder 8 and is fixedly connected to a connecting plate 11, and a gap is provided between the piston rod 10 and the buffer cylinder 8; a telescopic cylinder 12 is fixedly connected to the outer wall of the buffer cylinder 8 away from the dust collecting cylinder 1, the end of the telescopic cylinder 12 is fixedly connected to the connecting plate 11, and the telescopic cylinder 12 is electrically connected to the pressure sensor 5.

[0037] When a gas burst occurs, the pressure in the dust collecting tube 1 will change dramatically. When the pressure sensor 5 in the dust collecting tube 1 detects that the pressure in the dust collecting tube 1 suddenly becomes high, the telescopic cylinder 12 can quickly extend according to the signal of the pressure sensor 5, and the telescopic cylinder 12 is used to drive the piston rod 10 to move the piston 9 in the buffer tube 8, thereby drawing the gas in the dust collecting tube 1 into the buffer tube 8, thereby achieving a buffering effect on the gas.

[0038] As a further optimization scheme, in order to improve the response speed of the piston 9, an elastic member is provided between the buffer cylinder 8 and the connecting plate 11, and both ends of the elastic member are fixedly connected to the buffer cylinder 8 and the connecting plate 11 respectively.

[0039] By setting the elastic member, the working pressure of the telescopic cylinder 12 can be reduced, and the elastic member can be used to assist in pushing the piston 9 to slide, so that the piston 9 moves quickly in the buffer cylinder 8, thereby achieving the effect of quickly reducing the pressure of the dust collecting cylinder 1.

[0040] According to a further optimization scheme, the elastic member is a spring, a spring sheet or an elastic rubber.

[0041] A further optimized solution is to prevent gas from protruding from the dust collecting tube 1 into the tunnel during drilling. An anti-protrusion baffle 13 is provided on the drill bit fixing hole of the dust collecting tube 1 , and the anti-protrusion baffle 13 passes through the mounting frame 6 .

[0042] To further optimize the solution, in order to facilitate the discharge of drilling cuttings without affecting the extraction of gas, a guide sleeve 14 is provided in the buffer box 3, the top of the guide sleeve 14 is connected to the discharge port of the dust collecting tube 1, and a plurality of air holes are opened on the side wall of the guide sleeve 14.

[0043] To further optimize the solution, in order to prevent the gas from being directly discharged along the guide sleeve 14, a guide inclined plate 15 is provided at the inner bottom of the buffer box 3, the higher end of the guide inclined plate 15 is arranged corresponding to the guide sleeve 14, and the lower end of the guide inclined plate 15 is provided with an arc guide plate 16.

[0044] The gas outburst prevention dust collector provided by the present invention has the following working principles:

[0045] The wind-driven slag removal system discharges the drill cuttings from the drill hole, and the drill cuttings enter the dust collecting barrel 1 and fall under the action of gravity. The spray head 2 arranged in the dust collecting barrel 1 wets the falling drill cuttings and dust, and the wetted drill cuttings and dust will absorb more dust in the process of falling, thereby achieving the effect of dust removal, and the drill cuttings are finally discharged through the guide inclined plate 15 of the buffer box 3. When gas protrusion occurs, after the gas enters the dust collecting barrel 1, the pressure in the dust collecting barrel 1 will change dramatically. When the pressure sensor 5 in the dust collecting barrel 1 detects that the pressure in the dust collecting barrel 1 suddenly increases, the telescopic cylinder 12 can be quickly extended according to the signal of the pressure sensor 5, and the telescopic cylinder 12 drives the piston rod 10 to move the piston 9 in the buffer barrel 8, thereby drawing the gas in the dust collecting barrel 1 into the buffer barrel 8 to achieve the buffering effect on the gas. At the same time, after the gas enters the buffer box 3, the buffer bag 7 opens under the action of pressure, and a large amount of gas enters the buffer bag 7, and can be buffered again by the buffer bag 7. The buffered gas is discharged through the gas extraction pipe 4. Under the action of double buffering, the present invention can prevent the production safety hazards caused by a large amount of gas rushing into the tunnel.

[0046] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A dust collector for preventing gas outburst, characterized in that: include: A dust collecting cylinder (1), wherein a spray head (2) for dust removal is arranged at the top of the dust collecting cylinder (1); A buffer box (3), the buffer box (3) is fixedly connected to the bottom of the dust collecting cylinder (1), a slag discharge port is provided at the bottom of the buffer box (3), and a gas extraction pipe (4) is connected to the buffer box (3); A passive pressure buffer mechanism, the passive pressure buffer mechanism being fixedly connected to the top of the buffer box (3); An active pressure buffer mechanism, the active pressure buffer mechanism being fixedly connected to the dust collecting cylinder (1), a pressure sensor (5) being installed inside the dust collecting cylinder (1), and the pressure sensor (5) being connected to the active pressure buffer mechanism; A mounting frame (6), wherein the mounting frame (6) is used to fix the dust collecting barrel (1) on a work surface.

2. The dust collector for preventing gas outburst according to claim 1, characterized in that: The passive pressure buffer mechanism comprises a buffer bag (7), the bottom end of the buffer bag (7) being fixedly connected to the buffer box (3).

3. The dust collector for preventing gas outburst according to claim 1, characterized in that: The active pressure buffer mechanism comprises a buffer cylinder (8) fixedly connected to the dust collecting cylinder (1), a piston (9) slidably connected inside the buffer cylinder (8), a piston rod (10) fixedly connected to the side of the piston (9) away from the dust collecting cylinder (1), the end of the piston rod (10) passes through the buffer cylinder (8) and is fixedly connected to a connecting plate (11), and a gap is provided between the piston rod (10) and the buffer cylinder (8); a telescopic cylinder (12) is fixedly connected to the outer wall of the end of the buffer cylinder (8) away from the dust collecting cylinder (1), the end of the telescopic cylinder (12) is fixedly connected to the connecting plate (11), and the telescopic cylinder (12) is electrically connected to the pressure sensor (5).

4. The dust collector for preventing gas outburst according to claim 3 is characterized in that: An elastic member is provided between the buffer cylinder (8) and the connecting plate (11), and two ends of the elastic member are fixedly connected to the buffer cylinder (8) and the connecting plate (11) respectively.

5. The dust collector for preventing gas outburst according to claim 4 is characterized in that: The elastic member is one of a spring, a spring sheet or an elastic rubber.

6. The dust collector for preventing gas outburst according to claim 1, characterized in that: An anti-burst baffle (13) is provided on the drill bit fixing hole of the dust collecting cylinder (1), and the anti-burst baffle (13) passes through the mounting frame (6).

7. The dust collector for preventing gas outburst according to claim 1, characterized in that: A guide sleeve (14) is arranged in the buffer box (3), the top end of the guide sleeve (14) is connected to the discharge port of the dust collecting cylinder (1), and a plurality of air holes are provided on the side wall of the guide sleeve (14).

8. The dust collector for preventing gas outburst according to claim 7, characterized in that: A guide inclined plate (15) is provided at the inner bottom of the buffer box (3), the higher end of the guide inclined plate (15) is arranged corresponding to the guide sleeve (14), and the lower end of the guide inclined plate (15) is provided with an arc-shaped guide plate (16).

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