Dust fall device for coal caving port of top coal caving hydraulic support

Abstract

The utility model discloses a dust falling device for a coal caving port of a top coal caving hydraulic support, which belongs to the related technical field of the top coal caving hydraulic support and comprises a support plate, a water supply pipeline and an adjusting protection component. The supporting plate has corresponding supporting force and is hung on the rear beam of the hydraulic support through a fixing rod. A mounting hole for mounting a pipeline is formed in the supporting plate; a supporting frame is arranged on the front side of the supporting plate and fixedly connected with the supporting plate through supporting rods. A water supply pipeline penetrates through the mounting hole and the supporting frame on the front side and is fixed on the supporting plate and the supporting frame, and a main spraying head is assembled at the front end and used for spraying below the coal discharging opening; the adjusting protection assembly comprises a protection net unit which is located on the front side of the supporting frame and connected with a telescopic drive arranged at the top end of the supporting frame, and corresponding protection operation is conducted on the front side of the supporting frame at different distances. And the auxiliary spraying unit is located below the supporting frame, hinged to the protective net unit and used for conducting spraying operation on the supporting plate.

Description

Technical Field

[0001] The invention belongs to the technical field related to a top coal caving hydraulic support, and in particular relates to a dust reduction device for a coal caving port of a top coal caving hydraulic support. Background Art

[0002] During coal mining, a rear spray system is installed at the rear of the top coal caving support. A large amount of coal dust and powder will be generated during the coal caving operation. The rear spray system of the top coal caving support is mainly used to spray water to reduce dust. The medium in the system is generally clean water.

[0003] When coal is discharged, the components of the spray system are easily damaged by the flying coal blocks and gangue, which affects the spraying process, and coal dust and powder are easy to enter the inside of the hydraulic support. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dust reduction device for a coal caving port of a top coal caving hydraulic support.

[0005] The technical solution adopted by the present invention is as follows: a dust reduction device for the coal discharge port of a hydraulic support for top coal caving, comprising a support plate, a water supply pipe and an adjusting and protective assembly; the support plate has a corresponding supporting force and is suspended on the rear beam of the hydraulic support through a fixing rod; a mounting hole for installing the pipe is provided on the support plate; a support frame is provided on the front side of the support plate, and the support frame is fixedly connected to the support plate through a supporting rod; the water supply pipe passes through the mounting hole and the support frame on the front side, and is fixed on the support plate and the support frame, and a main spray head is installed at the front end for spraying below the coal discharge port; the adjusting and protective assembly comprises a protective net unit, which is located on the front side of the support frame, connected to a telescopic drive arranged on the top end of the support frame, and performs corresponding protective operations at different distances from the front side of the support frame; an auxiliary spray unit, which is located below the support frame and is hinged to the protective net unit, and is used for spraying operations to the support plate.

[0006] Furthermore, the auxiliary spray unit includes a pressure chamber plate, which is hinged to the bottom of the protective net unit, has corresponding supporting force, is hollow inside to form a pressure chamber, and is connected to a water supply pipe; an auxiliary spray head is assembled on the side of the pressure chamber plate close to the support plate and is connected to the pressure chamber; and an air-pushing unit is arranged between the support plate and the pressure chamber plate through a telescopic rod, and the pressure chamber plate and the air-pushing unit are separated by a long rod.

[0007] Furthermore, the pushing air supply unit includes a mounting plate connected to the telescopic end of the telescopic rod, one end of the long rod is fixedly connected to the mounting plate, and a placement chamber for installing an air supply fan is provided on the mounting plate; the air supply fan is installed in the placement chamber and is used to supply air to the pressure chamber plate.

[0008] Furthermore, the air supply fans are provided in multiple groups.

[0009] Furthermore, the drainage end of the water supply pipe gradually retracts inwards to a predetermined size and then gradually expands outwards to a predetermined size.

[0010] After adopting the above structure, the utility model has the following beneficial effects:

[0011] (1) Through the water supply pipe and the auxiliary spray unit, spray dust reduction is carried out in the direction of the conveyor and the hydraulic support, and through the push air supply unit, air is supplied to the auxiliary spray unit to blow away the water mist sprayed in the direction of the hydraulic support and blow it out of the hydraulic support together with the dust, coal dust, etc. The blown away water mist settles, thereby ensuring the dust reduction effect of the coal discharge port and preventing a large amount of dust and coal dust from entering the hydraulic support;

[0012] (2) The protective net unit is set up to provide protection in front of the main spray head of the water supply pipe, and the protection can be provided at different distances from the front of the main spray head of the water supply pipe, so that the tax hitting the protective net can be dispersed to a certain extent; and the auxiliary spray head of the auxiliary spray unit is located on the inner side of the pressure chamber plate to avoid being exposed to the outside and being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a dust reduction device for a top coal caving hydraulic support coal caving port proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a dust reduction device for a coal caving port of a top coal caving hydraulic support proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure from another angle of a dust reduction device for a coal caving port of a top coal caving hydraulic support proposed by the utility model.

[0017] In the attached drawings: 1. support plate, 2. water supply pipe, 3. fixing rod, 4. support frame, 5. support rod, 6. protection net unit, 7. telescopic drive, 8. pressure chamber plate, 9. auxiliary spray head, 10. telescopic rod, 11. mounting plate, 12. placement chamber, 13. long rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0020] Example 1

[0021] When the top coal hydraulic support is caving coal, a large amount of dust will be generated. The spray dust reduction device is set on the rear beam to spray dust reduction towards the rear coal discharge port and conveyor direction. However, a large amount of dust will still drift into the interior of the hydraulic support. Based on this, Figure 1-Figure 3 As shown, the inventor has proposed a dust suppression device for the coal discharge port of a top coal caving hydraulic support, which comprises a support plate 1, a water supply pipe 2 and an adjusting and protecting assembly; the support plate 1 has a corresponding supporting force and is suspended on the rear beam of the hydraulic support through a fixing rod 3; a mounting hole for installing a pipe is provided on the support plate 1; a supporting frame 4 is arranged on the front side of the support plate 1, and the supporting frame 4 is fixedly connected to the support plate 1 through a supporting rod 5; the water supply pipe 2 passes through the mounting hole and the supporting frame 4 on the front side, and is fixed on the support plate 1 and the supporting frame 4, and a main spray head is installed at the front end for spraying below the coal discharge port; the adjusting and protecting assembly comprises an auxiliary spray unit, which is located below the supporting frame 4 and is used for spraying toward the support plate 1, The main spray head is arranged at the drainage end of the water supply pipe 2, and the drainage end of the water supply pipe 2 gradually retracts inward to a predetermined size and then gradually expands outward to a predetermined size. The water body sprays water mist from the main spray head at the drainage end to the front side, and performs corresponding dust reduction operations at the coal discharge port. At the same time, the auxiliary spray unit sprays water mist in the direction of the support plate 1, and the push air supply unit installed in the direction of the support plate 1 supplies air to the auxiliary spray unit to disperse the water mist sprayed by the auxiliary spray unit. In this embodiment, spraying to the front side of the hydraulic support and being blown to the rear end plate by the wind to cooperate with the spray dust reduction at the rear end can accelerate the dispersion of the sprayed water mist, enhance the dust reduction effect of the coal discharge port at the rear end of the hydraulic support, and at the same time blow the dust and coal dust floating to the inside of the hydraulic support out of the rear side of the hydraulic support.

[0022] Specifically, the auxiliary spray unit includes a pressure chamber plate 8, which is hinged at the bottom of the protective net unit 6, has corresponding supporting force, and is hollow inside to form a pressure chamber, which is connected to the water supply pipe 2; an auxiliary spray head 9, which is installed on the side of the pressure chamber plate 8 close to the support plate 1 and is connected to the pressure chamber; a push air supply unit, which is arranged between the support plate 1 and the pressure chamber plate 8 through a telescopic rod 10, and the pressure chamber plate 8 and the push air supply unit are separated by a long rod 13. When the main spray head sprays water mist, the auxiliary spray head 9 sprays water mist toward the support plate 1, and the air supply fan of the push air supply unit is started to supply air toward the auxiliary spray head 9 to blow away the water mist toward the rear side of the hydraulic support.

[0023] It should be noted that the air supply unit may include a mounting plate 11 connected to the telescopic end of the telescopic rod 10, one end of the long rod 13 is fixedly connected to the mounting plate 11, and a placement chamber 12 for installing an air supply fan is provided on the mounting plate 11; the air supply fan is installed in the placement chamber 12 to supply air to the pressure chamber plate 8.

[0024] Example 2

[0025] On the basis of Example 1, when coal is released, flying coal blocks and gangue are easy to hit the spray dust reduction components. On this basis, the inventor further proposes that the adjustment protection component also includes a protection net unit 6, which is located on the front side of the support frame 4 and is connected to the telescopic drive 7 set at the top of the support frame 4 to perform corresponding protection operations at different distances in front of the support frame 4; the auxiliary spray unit is hinged to the protection net unit 6, and the protection net unit 6 can be used for protection at different positions at the front end of the spray head. In the embodiment, it is preferred that the telescopic push rod is connected to the protection net unit 6. The top end is hinged, and the top end of the pressure chamber plate 8 of the auxiliary spray unit is hinged to the bottom of the protective net unit 6. The pressure chamber plate 8 is close to the side of the support plate 1 and abuts against the long rod 13. When the telescopic rod 10 is extended, the long rod 13 abuts against the inner side of the pressure chamber plate 8 and pushes the pressure chamber plate 8, which can change the inclination angle of the pressure chamber plate 8. When controlling the extension and retraction of the telescopic end of the telescopic push rod, the inclination angle of the protective net can be appropriately changed, and the distance between the protective net and the main spray head can be changed. When the main spray head sprays water mist, the water mist hits the protective net, which can achieve a certain dispersion of the water mist. In addition, the protective net and the pressure chamber plate 8 are hinged, and when subjected to impact, they rotate at the hinge to unload a certain amount of force, thereby improving the protective effect.

[0026] It should be noted that the front side of the pressure chamber plate 8 has a corresponding strength to withstand the impact force of flying coal blocks and gangue.

[0027] The specific usage is as follows: the device of the present application is connected to the rear beam of the top coal caving hydraulic support through the fixing rod 3; when caving coal, the water supply pipe 2 is connected to the water supply pipe fittings, water is injected into the water supply pipe 2, enters the drainage end and is discharged through the main spray head, and at the same time, the water enters the pressure chamber connected to the water injection pipe and is discharged through the auxiliary spray head 9; the air supply fan is started to supply air to the main spray head, the water mist is blown to the rear side of the hydraulic support, and at the same time, the dust and the like floating to the inside of the hydraulic support are blown out of the hydraulic support, and dust reduction spray is performed on the rear side of the hydraulic support.

[0028] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural modes and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they shall all fall within the scope of protection of the present invention.

Claims

1. A dust suppression device for a top coal caving hydraulic support, characterized in that: include: A support plate, having corresponding supporting force, is suspended on the rear beam of the hydraulic support through a fixing rod; a mounting hole for installing a pipeline is provided on the support plate; a support frame is provided on the front side of the support plate, and the support frame is fixedly connected to the support plate through a supporting rod; The water supply pipe runs through the installation hole and the front support frame and is fixed on the support plate and the support frame. The front end is equipped with a main spray head for spraying below the coal discharge port; The adjustable protection component includes a protection net unit, which is located on the front side of the support frame and is connected to a telescopic drive arranged on the top of the support frame to perform corresponding protection operations at different distances in front of the support frame; an auxiliary spray unit, which is located below the support frame and is hinged to the protection net unit to perform spray operations on the support plate.

2. The dust suppression device for the coal caving port of a top coal caving hydraulic support according to claim 1 is characterized by: The auxiliary spray unit includes a pressure chamber plate, which is hinged to the bottom of the protective net unit, has corresponding supporting force, is hollow inside to form a pressure chamber, and is connected to a water supply pipe; an auxiliary spray head is assembled on the side of the pressure chamber plate close to the support plate and is connected to the pressure chamber; and a push air supply unit is arranged between the support plate and the pressure chamber plate through a telescopic rod, and the pressure chamber plate and the push air supply unit are separated by a long rod.

3. The dust suppression device for the coal caving port of a top coal caving hydraulic support according to claim 2 is characterized by: The push air supply unit includes a mounting plate connected to the telescopic end of the telescopic rod, one end of the long rod is fixedly connected to the mounting plate, and a placement chamber for installing an air supply fan is provided on the mounting plate; the air supply fan is installed in the placement chamber and is used to supply air to the pressure chamber plate.

4. The dust suppression device for the coal caving port of a top coal caving hydraulic support according to claim 3 is characterized by: The air supply fans are arranged in multiple groups.

5. The dust suppression device for coal caving port of top coal caving hydraulic support according to claim 1 is characterized by: The drainage end of the water supply pipe gradually retracts inwards to a predetermined size and then gradually expands outwards to a predetermined size.

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