Dust suppression device for coal mining

Abstract

The invention discloses a dust suppression device for coal mining, and relates to the technical field of dust removal for coal mining, the dust suppression device comprises a dust suppression machine body, the air inlet end of the dust suppression machine body is fixedly connected with an air inlet pipe, the end, away from the dust suppression machine body, of the air inlet pipe is provided with a protective net cover, and the end, close to the protective net cover, of the air inlet pipe is provided with a cleaning mechanism; the cleaning device is used for cleaning wet impurities attached to the protective net cover. Through the arrangement of the cleaning mechanism, in the reciprocating swing process of the swing rod, a plurality of convex blocks on the swing rod are continuously inserted into the meshes to push impurities adhered to or clamped in the meshes, and most impurities in the meshes of the protective net cover are removed under the cooperation of suction force of negative pressure generated by the dust suppression machine body; therefore, the problems that after the dust suppression machine body works for a long time, meshes of the protective net cover are pasted, and the ventilation area is reduced are effectively solved, the dust suppression effect of the dust suppression machine body is improved, and meanwhile the overhaul frequency of the protective net cover is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining dust suppression, in particular to a dust suppression device for coal mining. BACKGROUND

[0002] The dust suppression device for coal mining is a device that actively sucks dust-containing air into the device, separates the dust by physical or chemical methods, collects the dust, and discharges the purified air. It is a key and necessary technical means for preventing occupational diseases and preventing explosions.

[0003] Most dust suppression devices for coal mining have a dust suction port close to the dust source (such as the head of a tunneling machine or a transfer point) during use. Then, the negative pressure generated by the fan is used to capture and collect the dust raised during coal mining. During use, a protective mesh cover is provided at the dust suction port to protect the dust suction port and prevent larger materials from entering the dust suction pipe. This not only prevents the dust suction pipe from being blocked, but also protects the filtration and fan system inside the dust suction pipe.

[0004] Although the above-mentioned dust suppression device for coal mining can better absorb and collect dust, in actual use, when lignite is mined, due to the characteristics of lignite, it contains a lot of water, which causes the dust generated during mining to also have a high water content. When passing through the protective mesh cover, the dust is easily adhered to the protective mesh cover. After a long period of work, the mesh holes are clogged, the effective ventilation area is drastically reduced, the dust removal system wind volume is reduced, the suction force is insufficient, and the dust removal effect is greatly reduced, thereby affecting the dust suppression effect of the dust suppression device for coal mining. SUMMARY

[0005] Therefore, the present application provides a dust suppression device for coal mining to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a dust suppression device for coal mining, comprising a dust suppression body, an air inlet pipe is fixedly connected to the air inlet end of the dust suppression body, a protective mesh cover is arranged at the end of the air inlet pipe away from the dust suppression body, a cleaning mechanism is arranged at the end of the air inlet pipe close to the protective mesh cover for cleaning the wet impurities adhered to the protective mesh cover, the cleaning mechanism comprises a mounting ring, the mounting ring is fixedly installed at the end of the air inlet pipe close to the protective mesh cover, a swinging block is rotatably connected to the top of the mounting ring, a swinging rod is fixedly connected to the bottom of the swinging block, a plurality of protrusions are slidably connected to the side of the swinging rod close to the protective mesh cover, a first return spring is fixedly connected between each protrusion and the swinging rod, one end of each protrusion is arranged in a semispherical shape, when the swinging rod rotates, the protrusions are inserted into the mesh holes of the protective mesh cover through the cooperation of the protrusions and the first return springs, and the cleaning mechanism further comprises an auxiliary assembly for driving the auxiliary assembly to knock the swinging rod when the swinging rod rotates.

[0007] As preferred, the cleaning mechanism further comprises a reinforcing assembly for knocking the protective screen cover when the swing lever rotates, the reinforcing assembly comprises at least two support frames, the at least two support frames are fixedly connected to the outer surface of the mounting ring, the shaft end of the support frame is rotatably sleeved with a rotating rod, the outer surface of the shaft end of the support frame is sleeved with a first torsional spring, the two ends of the first torsional spring are fixedly connected with the support frame and the rotating rod respectively, the outer surface of the mounting ring is slidably inserted with at least two knocking columns, each of the knocking columns penetrates the mounting ring and is in contact with the protective screen cover, the end of the knocking column close to the adjacent rotating rod is fixedly connected with a sleeve, the sleeve is sleeved on the outer surface of the rotating rod, the swing lever drives the rotating rod to swing when the swing lever rotates, and the knocking column knocks the protective screen cover through cooperation with the sleeve when the rotating rod swings.

[0008] As preferred, the shape of the protruding block is matched with the shape of the mesh hole of the protective screen cover, so that the outer surface of the protruding block is in contact with the inner wall of the mesh hole of the protective screen cover when the protruding block is inserted into the mesh hole of the protective screen cover.

[0009] As preferred, the length of the swing lever is greater than the diameter of the protective screen cover, so that the range of rotation can cover the protective screen cover when the swing lever rotates.

[0010] As preferred, the length of the rotating rod is at least three times greater than the thickness of the swing lever.

[0011] As preferred, the auxiliary assembly comprises a vibrating rod, the vibrating rod is rotatably connected to the side of the swing lever away from the protective screen cover, the shaft end of the vibrating rod is sleeved with a second torsional spring, the two ends of the second torsional spring are fixedly connected with the vibrating rod and the swing lever respectively, the side of the mounting ring close to the swing lever is fixedly connected with an arc-shaped rod, the arc-shaped rod is located between the swing lever and the mounting ring, the side of the arc-shaped rod close to the swing lever is fixedly connected with a plurality of protrusions, the protrusions are arranged in an arc shape, the side of the swing lever close to the arc-shaped rod is slidably inserted with a linkage column, the outer surface of the linkage column is sleeved with a second reset spring, the two ends of the second reset spring are fixedly connected with the linkage column and the swing lever respectively, and the linkage column drives the vibrating rod to rotate through cooperation of the linkage column and the protrusions when the swing lever rotates.

[0012] As preferred, the arc-shaped rod and the swing lever are arranged as the same rotating center.

[0013] As preferred, the end of the linkage column close to the protrusion is rotatably connected with a first ball.

[0014] As preferred, the end of the linkage column close to the vibrating rod is rotatably connected with a second ball.

[0015] As preferred, the vibration rod is composed of an inclined rod and a straight rod, and the vibration rod straight rod is fixedly connected with a plurality of knocking heads near one side of the swing rod.

[0016] Compared with the prior art, the dust suppression device for coal mining has the following beneficial effects:

[0017] 1、The setting of the cleaning mechanism, in the reciprocating swing process of the swing rod, the plurality of protrusions on the swing rod continuously insert into the mesh holes, push the impurities adhered or stuck in the mesh holes, and cooperate with the suction force generated by the dust suppression body to remove most of the impurities in the mesh holes of the protective screen cover, thereby effectively avoiding the problem of the mesh holes of the protective screen cover being clogged after the dust suppression body works for a long time, reducing the ventilation area, improving the dust suppression effect of the dust suppression body, and reducing the frequency of maintenance of the protective screen cover.

[0018] 2、The knocking column penetrates the mounting ring and knocks on the side of the protective screen cover, so that the protective screen cover vibrates, and the vibration generated by the knocking can further improve the cleaning effect of the protective screen cover, and cooperate with the cleaning when the swing rod swings to effectively reduce the impurities adhered in the mesh holes of the protective screen cover.

[0019] 3、The knocking head knocks the swing rod, and the vibration generated by the knocking makes the protrusions vibrate, thereby effectively avoiding the problem that the wet impurities adhere to the protrusions after being separated from the mesh holes of the protective screen cover, avoiding the accumulation of impurities on the protrusions, and improving the effect of the protrusions pushing and removing the impurities in the mesh holes of the protective screen cover. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the present application;

[0021] Figure 2 is a perspective view of the cleaning mechanism of the present application;

[0022] Figure 3 is a partial sectional view of the swing rod of the present application;

[0023] Figure 4 is a partial perspective view of the mounting ring of the present application;

[0024] Figure 5 is a partial perspective view of the swing rod of the present application;

[0025] Figure 6 is a perspective view of the present application Figure 5 is an enlarged view of A in the present application;

[0026] Figure 7 is a structure diagram of the swing rod in use.

[0027] In the drawings:

[0028] 100, dust suppression machine body; 101, air inlet pipe; 102, protective mesh cover;

[0029] 200, cleaning mechanism; 201, mounting ring; 202, swing block; 203, swing rod; 204, protruding block; 205, first return spring;

[0030] 211, support frame; 212, rotating rod; 213, first torsional spring; 214, sleeve; 215, knocking column;

[0031] 221, vibrating rod; 222, arc-shaped rod; 223, protruding strip; 224, linkage column; 225, second return spring; 226, first rolling ball; 227, second rolling ball; 228, knocking head; 229, second torsional spring. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is merely meant to provide a better understanding of the subject matter described herein and can be changed in function and arrangement without departing from the scope of the present disclosure. Various examples can omit, substitute, or add various procedures or components as appropriate. Also, it should be understood that some features described with respect to one example can be combined with features of other examples.

[0033] As Figures 1 to 7 shown, the present embodiment provides a dust suppression device for coal mining, which comprises a dust suppression machine body 100, the dust suppression machine body 100 is fixedly connected with an air inlet pipe 101 at the air inlet end, the air inlet pipe 101 is provided with a protective mesh cover 102 at the end away from the dust suppression machine body 100, the air inlet pipe 101 is provided with a cleaning mechanism 200 at the end close to the protective mesh cover 102, which is used for cleaning the wet impurities adhered to the protective mesh cover 102, the cleaning mechanism 200 comprises a mounting ring 201, the mounting ring 201 is fixedly installed at the end of the air inlet pipe 101 close to the protective mesh cover 102, the top of the mounting ring 201 is rotatably connected with a swing block 202, the bottom of the swing block 202 is fixedly connected with a swing rod 203, the swing rod 203 is slidably connected with a plurality of protruding blocks 204 at the side close to the protective mesh cover 102, the first return spring 205 is fixedly connected between each protruding block 204 and the swing rod 203, one end of the protruding block 204 is provided in a hemispherical shape, when the swing rod 203 rotates, the protruding block 204 is inserted into the mesh hole of the protective mesh cover 102 through the cooperation of the protruding block 204 and the first return spring 205, the cleaning mechanism 200 further comprises an auxiliary assembly, which is used for driving the auxiliary assembly to knock the swing rod 203 when the swing rod 203 rotates.

[0034] The cleaning mechanism 200 further comprises a reinforcing assembly for knocking the protective screen cover 102 when the swing lever 203 rotates, the reinforcing assembly comprises at least two support frames 211, the at least two support frames 211 are fixedly connected to the outer surface of the mounting ring 201, the shaft end of the support frame 211 is rotatably sleeved with a rotating rod 212, the outer surface of the shaft end of the support frame 211 is sleeved with a first torsional spring 213, the two ends of the first torsional spring 213 are fixedly connected with the support frame 211 and the rotating rod 212 respectively, the outer surface of the mounting ring 201 is slidably inserted with at least two knocking columns 215, each knocking column 215 penetrates the mounting ring 201 and is in contact with the protective screen cover 102, the end of the knocking column 215 close to the adjacent rotating rod 212 is fixedly connected with a sleeve 214, the sleeve 214 is sleeved on the outer surface of the rotating rod 212, the swing lever 203 drives the rotating rod 212 to swing when rotating, and the rotating rod 212 swings to make the knocking column 215 knock the protective screen cover 102 through cooperation with the sleeve 214.

[0035] Further, the protruding block 204 is shaped to match the shape of the mesh hole of the protective screen cover 102, so that when the protruding block 204 is inserted into the mesh hole of the protective screen cover 102, the outer surface of the protruding block 204 is in contact with the inner wall of the mesh hole of the protective screen cover 102, thereby improving the cleaning effect.

[0036] Further, the length of the swing lever 203 is greater than the diameter of the protective screen cover 102, so that when the swing lever 203 rotates, the range of rotation can cover the protective screen cover 102, thereby ensuring the comprehensiveness of cleaning the protective screen cover 102.

[0037] Further, the length of the rotating rod 212 is at least three times greater than the thickness of the swing lever 203, so that when the swing lever 203 swings, it can ensure contact with the rotating rod 212.

[0038] The auxiliary assembly comprises a vibrating rod 221, the vibrating rod 221 is rotatably connected to the side of the swing lever 203 away from the protective screen cover 102, the shaft end of the vibrating rod 221 is sleeved with a second torsional spring 229, the two ends of the second torsional spring 229 are fixedly connected with the vibrating rod 221 and the swing lever 203 respectively, the side of the mounting ring 201 close to the swing lever 203 is fixedly connected with an arc-shaped lever 222, the arc-shaped lever 222 is located between the swing lever 203 and the mounting ring 201, the side of the arc-shaped lever 222 close to the swing lever 203 is fixedly connected with a plurality of protrusions 223, the protrusions 223 are arranged in an arc shape, the side of the swing lever 203 close to the arc-shaped lever 222 is slidably inserted with a linkage column 224, the outer surface of the linkage column 224 is sleeved with a second return spring 225, the two ends of the second return spring 225 are fixedly connected with the linkage column 224 and the swing lever 203 respectively, when the swing lever 203 rotates, the linkage column 224 drives the vibrating rod 221 to rotate through cooperation with the protrusions 223.

[0039] Further, the arc-shaped rod 222 and the swing rod 203 are arranged at the same rotation center, so as to ensure that the convex strip 223 can push the linkage column 224.

[0040] Further, the linkage column 224 is rotationally connected with the first ball 226 at one end close to the convex strip 223, so as to reduce the friction when the convex strip 223 is in contact, thereby reducing the abrasion and prolonging the service life.

[0041] The vibration rod 221 is composed of an inclined rod and a straight rod, and the straight rod of the vibration rod 221 is fixedly connected with a plurality of knocking heads 228 at one side close to the swing rod 203.

[0042] The working principle of all the contents in the above embodiments is as follows:

[0043] Before work, the shaft end of the swing block 202 is fixedly connected with the output end of the external servo motor, and drives the swing block 202 and the swing rod 203 to rotate, so that the swing rod 203 rotates and is located at the side of the mounting ring 201, thereby no longer blocking the protective screen cover 102, and at the same time, when the swing rod 203 is at the side, since the length of the rotating rod 212 is greater than the thickness of the swing rod 203, when the swing rod 203 rotates, the swing rod 203 will push one of the rotating rods 212 to rotate, the first torsional spring 213 is twisted, at the same time, drives the adjacent sleeve 214 and the knocking column 215 to move, so that one end of the knocking column 215 is not in contact with the protective screen cover 102.

[0044] The working principle and beneficial effects of the cleaning mechanism 200 are as follows:

[0045] When the dust suppression machine body 100 is used for a long time, and the object of the roadway mining is relatively humid lignite, at this time the external servo motor can be started, so that the output end of the external servo motor drives the swing block 202 and the swing rod 203 to reciprocating swing, the swing range covers the protective screen cover 102, in the swing process, due to the spherical setting of the protruding block 204 close to one end of the protective screen cover 102, when the arc surface of the protruding block 204 contacts the protective screen cover 102, the protruding block 204 slides to the direction of the first return spring 205 through the extrusion of the protective screen cover 102, the first return spring 205 is compressed, and when the protruding block 204 is aligned with the mesh of the protective screen cover 102, under the rebound of the first return spring 205, the protruding block 204 extends into the mesh to push the impurities adhered in the mesh, and under the rotation of the swing rod 203, the hole wall of the mesh continues to extrude the spherical surface of the protruding block 204, and then the protruding block 204 is compressed again. Finally, in the reciprocating swing process of the swing rod 203, the plurality of protruding blocks 204 on the swing rod 203 continuously insert into the mesh to push the impurities adhered or stuck in the mesh, and under the cooperation of the suction force generated by the dust suppression machine body 100, most of the impurities in the mesh of the protective screen cover 102 are removed, thereby effectively avoiding the problem of the mesh of the protective screen cover 102 being covered after the dust suppression machine body 100 works for a long time, reducing the ventilation area, improving the dust suppression effect of the dust suppression machine body 100, and reducing the frequency of maintenance of the protective screen cover 102.

[0046] Further, when the swing rod 203 reciprocating swings, it will move away from one of the rotating rods 212 and move close to the other rotating rod 212. When moving away from the rotating rod 212, under the rebound force of the first torsional spring 213, the rotating rod 212 is rebounded and reset, thereby driving the sleeve 214 and the knocking column 215 to slide into the mounting ring 201. The sleeve 214 is sleeved on the rotating rod 212, and there is a gap between the sleeve 214 and the rotating rod 212. Therefore, when the rotating rod 212 pushes the sleeve 214 and the knocking column 215 to move, the sleeve 214 will slide with the rotating rod 212, thereby making the knocking column 215 penetrate the mounting ring 201 and knock on the side of the protective screen cover 102 when the knocking column 215 slides to the direction of the mounting ring 201, so that the protective screen cover 102 vibrates. The vibration generated by the knocking can further improve the cleaning effect of the protective screen cover 102, and cooperate with the cleaning when the swing rod 203 swings, thereby effectively reducing the impurities adhered in the mesh of the protective screen cover 102.

[0047] Furthermore, as the swing rod 203 reciprocates, the first ball 226 continuously approaches and moves away from the multiple protrusions 223, causing the arc surface of the protrusions 223 to continuously push the first ball 226. With the cooperation of the second return spring 225, the first ball 226, the linkage column 224, and the second ball 227 reciprocate through sliding. When the second ball 227 approaches the vibrating rod 221 during reciprocating sliding, as... Figure 5 As shown, this will push the second torsion spring 229 to rotate, causing the straight rod of the second torsion spring 229 and the striking head 228 to move closer to the swing rod 203, thereby striking the swing rod 203. When the second ball 227 moves away from the vibrating rod 221, under the rebound of the second return spring 225, the linkage column 224 moves away from the vibrating rod 221. Consequently, under the rebound of the second torsion spring 229, the straight rod of the vibrating rod 221 moves away from the swing rod 203. During the reciprocating rotation of the swing rod 203, the striking head 228 strikes the swing rod 203. The vibration generated by the striking causes the protrusion 204 to vibrate as well, thereby effectively preventing wet impurities from adhering to the protrusion 204 after detaching from the mesh of the protective net cover 102, avoiding the accumulation of impurities on the protrusion 204, and improving the effect of the protrusion 204 in pushing and removing impurities from the mesh of the protective net cover 102.

[0048] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A dust suppression device for coal mining, comprising a dust suppression body (100), wherein an air inlet pipe (101) is fixedly connected to the air inlet end of the dust suppression body (100), and a protective net cover (102) is provided at the end of the air inlet pipe (101) away from the dust suppression body (100), characterized in that, A cleaning mechanism (200) is provided at one end of the air intake pipe (101) near the protective mesh cover (102) for cleaning wet impurities adhering to the protective mesh cover (102). The cleaning mechanism (200) includes a mounting ring (201), which is fixedly installed at one end of the air intake pipe (101) near the protective mesh cover (102). A swing block (202) is rotatably connected to the top of the mounting ring (201), and a swing rod (203) is fixedly connected to the bottom of the swing block (202). The swing rod (203) is located near the protective mesh cover (102). The cleaning mechanism (200) has multiple protrusions (204) slidably connected on one side. Each protrusion (204) is fixedly connected to a first return spring (205) between itself and the swing rod (203). One end of the protrusion (204) is set as a hemispherical shape. When the swing rod (203) rotates, the protrusion (204) is inserted into the mesh of the protective mesh cover (102) through the cooperation of the protrusion (204) and the first return spring (205). The cleaning mechanism (200) also includes an auxiliary component for driving the auxiliary component to strike the swing rod (203) when the swing rod (203) rotates.

2. A dust suppression device for coal mining according to claim 1, characterized in that: The cleaning mechanism (200) further includes a reinforcing component for striking the protective mesh cover (102) when the swing rod (203) rotates. The reinforcing component includes at least two support frames (211), each of which is fixedly connected to the outer surface of the mounting ring (201). A rotating rod (212) is rotatably sleeved at the shaft end of each support frame (211). A first torsion spring (213) is sleeved on the outer surface of the shaft end of each support frame (211). The two ends of the first torsion spring (213) are fixedly connected to the support frame (211) and the rotating rod (212) respectively. The outer surface of the mounting ring (201) is... At least two striking posts (215) are slidably inserted on the surface. Each striking post (215) passes through the mounting ring (201) and contacts the protective net cover (102). A sleeve (214) is fixedly connected to one end of the striking post (215) near the adjacent rotating rod (212). The sleeve (214) is sleeved on the outer surface of the rotating rod (212). When the swing rod (203) rotates, it drives the rotating rod (212) to swing. When the rotating rod (212) swings, the striking post (215) strikes the protective net cover (102) through the cooperation with the sleeve (214).

3. A dust suppression device for coal mining according to claim 1, characterized in that: The shape of the protrusion (204) is adapted to the shape of the mesh of the protective net cover (102), so that when the protrusion (204) is inserted into the mesh of the protective net cover (102), its outer surface contacts the inner wall of the mesh of the protective net cover (102).

4. A dust suppression device for coal mining according to claim 1, characterized in that: The length of the swing rod (203) is greater than the diameter of the protective net cover (102), so that when the swing rod (203) rotates, the range of rotation can cover the protective net cover (102).

5. A dust suppression device for coal mining according to claim 2, characterized in that: The length of the rotating rod (212) is at least three times the thickness of the swing rod (203).

6. A dust suppression device for coal mining according to claim 1, characterized in that: The auxiliary component includes a vibrating rod (221), which is rotatably connected to the side of the swing rod (203) away from the protective net cover (102). A second torsion spring (229) is sleeved on the shaft end of the vibrating rod (221). The two ends of the second torsion spring (229) are fixedly connected to the vibrating rod (221) and the swing rod (203) respectively. An arc-shaped rod (222) is fixedly connected to the side of the mounting ring (201) near the swing rod (203). The arc-shaped rod (222) is located between the swing rod (203) and the mounting ring (201). The arc-shaped rod (222) is close to the side of the swing rod (203). 03) A plurality of protrusions (223) are fixedly connected on one side. The protrusions (223) are set in an arc shape. The swing rod (203) is slidably inserted with a linkage column (224) on the side near the arc rod (222). A second return spring (225) is sleeved on the outer surface of the linkage column (224). The two ends of the second return spring (225) are fixedly connected to the linkage column (224) and the swing rod (203) respectively. When the swing rod (203) rotates, the linkage column (224) drives the vibration rod (221) to rotate through the cooperation of the linkage column (224) and the protrusions (223).

7. A dust suppression device for coal mining according to claim 6, characterized in that: The arc-shaped rod (222) and the swing rod (203) are set to the same rotation center.

8. A dust suppression device for coal mining according to claim 6, characterized in that: The first ball bearing (226) is rotatably connected to one end of the linkage column (224) near the protrusion (223).

9. A dust suppression device for coal mining according to claim 6, characterized in that: The linkage column (224) is rotatably connected to a second ball bearing (227) at one end near the vibrating rod (221).

10. A dust suppression device for coal mining according to claim 6, characterized in that: The vibrating rod (221) consists of an inclined rod and a straight rod. Multiple striking heads (228) are fixedly connected to the straight rod of the vibrating rod (221) near the swing rod (203).

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