A dust-proof spray device between hydraulic supports in fully mechanized coal mining face

Abstract

The invention discloses a dust-proof spray device between hydraulic supports of a fully mechanized mining face in a coal mine. The technical scheme thereof mainly comprises a spray mechanism, wherein the spray mechanism is arranged at the bottom of a top beam of the hydraulic support close to one end of the coal mining face, and the spray mechanism sprays water mist in an oblique downward direction toward the coal mining face; and an air curtain mechanism, wherein the air curtain mechanism is used to form an air curtain between the hydraulic support and a conveyor belt to block smoke and water from flowing toward the hydraulic support; the air curtain mechanism is provided with a plurality of air curtain mechanisms, and the plurality of air curtain mechanisms are arranged along the arrangement direction of the plurality of hydraulic supports, and the air curtains formed by two adjacent air curtain mechanisms are mutually connected to form a complete air curtain, and at least one air curtain mechanism is arranged on each hydraulic support; an air curtain is formed between the hydraulic support, the conveyor belt and the coal mining face through the air curtain mechanism to block smoke and water mist from drifting toward the hydraulic support, thereby providing the water mist with sufficient time to adsorb the smoke and reduce the impact on the service life of the hydraulic support and the health of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of underground dust prevention, and more specifically, to a dust prevention spray device between hydraulic supports of a fully mechanized mining face in a coal mine. Background Art

[0002] When mining in a fully mechanized coal mining face, hydraulic supports are usually required for support, and mining is carried out while providing support.

[0003] When mining coal in a fully mechanized mining face, the coal conveyor belt is set on the side of the hydraulic support base close to the coal mining face. The top beam of the hydraulic support supports the top of the mine, and then the coal on the coal mining face is crushed by coal mining equipment. The crushed coal falls directly onto the conveyor belt, which transports the coal out.

[0004] In the process of coal mining, whether it is the coal mining equipment crushing the coal on the coal mining face or the coal conveying on the conveyor belt, a large amount of dust will be generated. The dust will fly toward the base of the hydraulic support and pass through the hydraulic support to the side of the hydraulic support away from the coal mining face, which will not only affect the life of the hydraulic cylinder on the hydraulic support, but also affect the health of the operators at the rear. In the prior art, although spray equipment is used to spray water mist on the hydraulic support, due to the existence of surface tension of water droplets and the huge amount of dust, the water mist cannot quickly absorb the dust. Therefore, the spraying of water mist at the existing hydraulic support has the problem of poor dust removal effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a dust-proof spray device between hydraulic supports of fully mechanized mining faces in coal mines, which forms an air curtain between the hydraulic support, the conveyor belt and the coal mining face through an air curtain mechanism, thereby blocking smoke and water mist from drifting toward the hydraulic support, thereby providing sufficient time for the water mist to absorb the smoke and dust, reducing the impact on the life of the hydraulic support and the health of the operators.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a dust-proof spray device between hydraulic supports of a fully-mechanized coal mining face, comprising a spray mechanism, the spray mechanism being arranged at the bottom of the top beam of the hydraulic support close to one end of the coal mining face, the spray mechanism spraying water mist in an oblique downward direction toward the coal mining face;

[0007] and an air curtain mechanism, the air curtain mechanism being used to form an air curtain between the hydraulic support and the conveyor belt to block smoke and water from flowing toward the hydraulic support;

[0008] There are multiple air curtain mechanisms, which are arranged along the arrangement direction of the multiple hydraulic supports. The air curtains formed by two adjacent air curtain mechanisms are interconnected to form a complete air curtain. At least one air curtain mechanism is arranged on each hydraulic support.

[0009] The present invention is further configured as follows: the air curtain mechanism includes an upper jet component, the upper jet component is provided in plurality, the plurality of upper jet components are arranged at the bottom of the top beam of the hydraulic support and arranged along the length direction of the top beam, and the upper jet component is arranged on the side of the spray mechanism away from the coal mining face;

[0010] The upper jet element sprays air downward in a direction away from the coal mining face, and the angle between the angle at which the multiple upper jet elements spray air from the direction close to the coal mining face toward the direction away from the coal mining face and the horizontal plane gradually increases, and the air curtain formed by the jet of any upper jet element intersects with the air curtain formed by the adjacent upper jet element.

[0011] The present invention is further configured as follows: the air curtain mechanism further comprises a lower jet component, the lower jet component is provided with one, and the lower jet component is arranged above the hydraulic support base;

[0012] The lower jet element jets obliquely downward toward the direction close to the coal mining face, and the air curtain formed by the jet of the lower jet element intersects with the air curtain formed by the upper air curtain farthest from the coal mining face.

[0013] The present invention is further configured as follows: among the upper jet components, the gas curtain formed by the upper jet components farthest from the coal mining surface is configured to be in a vertical state.

[0014] The present invention is further configured as follows: the air curtain mechanism further comprises a support assembly, and the support assembly is used to support the lower jet component;

[0015] The support assembly comprises a first connecting plate, one end of the bottom of the first connecting plate is hinged on the base of the hydraulic support;

[0016] And a second connecting plate, the bottom end of the second connecting plate is hinged to the top end of the first connecting plate, and the top end of the second connecting plate, the lower jet component is fixedly connected to the side of the first connecting plate close to the coal mining face.

[0017] The present invention is further configured such that when the top beam of the hydraulic support is deployed upward to support the top of the coal mining face, the first connecting plate is in a vertical state, and the top of the second connecting plate is inclined toward the direction close to the coal mining face.

[0018] The present invention is further configured as follows: in the air curtain mechanism, the air pressure of the plurality of upper air jets gradually increases from the air jet close to the coal mining surface to the upper air jet far from the coal mining surface;

[0019] The air pressure of the lower jet is greater than the air pressure of the upper jet farthest from the coal mining face.

[0020] The present invention is further configured as follows: the upper jet component and the lower jet component are both configured as fan-shaped;

[0021] The contact point of the fan-shaped air curtains of the lower air jets of two adjacent air curtain mechanisms is higher than the intersection of the air curtain of the lower air jet and the air curtain of the upper air jet farthest from the coal mining face;

[0022] The plurality of upper jet components are arranged in descending order from close to the coal mining surface to far from the coal mining surface, and the contact point of the fan-shaped air curtain of the upper jet components of the same order of two adjacent air curtain mechanisms is higher than the intersection of the air curtain of the upper jet component and the upper jet component of the next order.

[0023] The present invention is further configured as follows: two auxiliary jet components are arranged on both sides of the highest-ranked upper jet component, and the auxiliary jet components are used to blow air toward the coal mining face from the gap between the fan-shaped air curtain of the highest-ranked upper jet component and the top beam.

[0024] The present invention is further configured as follows: the spray mechanism comprises a water spray pipe, and the length direction of the water spray pipe is arranged along the width direction of the top beam;

[0025] And a spray head, wherein a plurality of the spray heads are arranged along the length direction of the water spray pipe, and the spray heads spray downwardly in an inclined direction close to the coal mining face.

[0026] In summary, compared with the prior art, the present invention has the following beneficial effects: the present invention forms an air curtain between the hydraulic support and the conveyor belt and the coal mining face through the air curtain mechanism, blocking smoke and water mist from drifting toward the hydraulic support, thereby providing sufficient time for the water mist to adsorb the smoke and dust, reducing the impact on the life of the hydraulic support and the health of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the embodiment when used;

[0028] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0029] Figure 3 is an enlarged schematic diagram of part B of 1;

[0030] Figure 4 is a schematic diagram of an upper jetting member of an embodiment;

[0031] Figure 5 The schematic diagram of the spray mechanism is shown in the embodiment;

[0032] Figure 6 for Figure 5Enlarged schematic diagram of part C of FIG.

[0033] In the figure: 1. top beam; 2. air curtain mechanism; 21. upper jet component; 22. lower jet component; 3. support assembly; 31. first connecting plate; 32. second connecting plate; 4. spray mechanism; 41. water spray pipe; 42. spray head; 5. auxiliary jet component. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0036] Embodiment: A dust-proof spray device between hydraulic supports of a fully mechanized coal mining face, see attached Figure 1 -Attached Figure 6 , including a spray mechanism 4 and an air curtain mechanism 2, wherein the spray mechanism 4 is arranged at the bottom of the hydraulic support top beam 1 near one end of the coal mining face, and the spray mechanism 4 sprays water mist in an oblique downward direction toward the coal mining face; the air curtain mechanism 2 is used to form an air curtain between the hydraulic support and the conveyor belt to block smoke and water from flowing toward the hydraulic support; specifically, a plurality of air curtain mechanisms 2 are provided, and the plurality of air curtain mechanisms 2 are arranged along the arrangement direction of the plurality of hydraulic supports, and the air curtains formed by two adjacent air curtain mechanisms 2 are interconnected to form a complete air curtain, and at least one air curtain mechanism 2 is provided on each hydraulic support.

[0037] When the hydraulic support is used in the comprehensive mining face, the top beam 1 of the hydraulic support is supported on the top of the comprehensive mining face, and water mist is sprayed toward the coal mining face and the conveyor belt through the spray mechanism 4 at the bottom of the top beam 1. At the same time, an air curtain is formed between the hydraulic support, the conveyor belt and the coal mining face through the air curtain mechanism 2. The air curtain blocks the smoke and water mist from drifting toward the hydraulic support, thereby providing sufficient time for the water mist to absorb the smoke and dust, reducing the impact on the life of the hydraulic support and the health of the operator.

[0038] Specifically, the air curtain mechanism 2 includes an upper jet component 21, and a plurality of the upper jet components 21 are provided. The plurality of upper jet components 21 are arranged at the bottom of the hydraulic support top beam 1 and are arranged along the length direction of the top beam 1. The upper jet component 21 is arranged on the side of the spray mechanism 4 away from the coal mining face; the upper jet component 21 sprays downward in a direction away from the coal mining face, and the angle between the jet angle of the plurality of upper jet components 21 and the horizontal plane gradually increases from the direction close to the coal mining face to the direction away from the coal mining face, and the air curtain formed by the jetting of any upper jet component 21 intersects with the air curtain formed by the adjacent upper jet component 21.

[0039] Since the top beam 1 extends to the top of the conveyor belt, if the air curtain is directly set vertically at the position of the base close to the conveyor belt, the part of the top beam 1 extending above the conveyor belt cannot be effectively protected. The arc-shaped multi-segment air curtain gradually formed by multiple upper jet parts 21 can increase the protection range of the hydraulic support.

[0040] Specifically, the air curtain mechanism 2 also includes a lower jet component 22, and the lower jet component 22 is provided with one, and the lower jet component 22 is arranged above the base of the hydraulic support; the lower jet component 22 jets obliquely downward in the direction close to the coal mining face, and the air curtain formed by the jet of the lower jet component 22 intersects with the air curtain formed by the upper air curtain farthest from the coal mining face.

[0041] By setting the lower jet component 22, the air curtain formed downward by the upper jet component 21 farthest from the coal mining surface can push the air curtain toward the direction close to the conveyor belt, thereby preventing water mist and dust driven by the air curtain from approaching the base.

[0042] Specifically, among the upper air-injecting members 21 , the air curtain formed by the upper air-injecting member 21 farthest from the coal mining face is set in a vertical state.

[0043] Specifically, the air curtain mechanism 2 also includes a support assembly 3, which is used to support the lower jet component 22; the support assembly 3 includes a first connecting plate 31 and a second connecting plate 32, and the bottom end of the first connecting plate 31 is hinged on the base of the hydraulic support; the bottom end of the second connecting plate 32 is hinged to the top end of the first connecting plate 31, and the top end of the second connecting plate 32, the lower jet component 22 is fixedly connected to the first connecting plate 31 on the side close to the coal mining face.

[0044] Specifically, by setting the first connecting plate 31 and the second connecting plate 32, when the hydraulic support is folded together, the first connecting plate 31 and the second connecting plate 32 will follow the hydraulic support to fold without hindering the folding of the hydraulic support. When it is needed to be used, the hydraulic support is unfolded, and the first connecting plate 31 and the second connecting plate 32 are unfolded accordingly, and the lower jet component 22 also arrives at the designated position and sprays air in a preset direction to form an air curtain.

[0045] Specifically, when the top beam 1 of the hydraulic support is deployed upward to support the top of the coal mining face, the first connecting plate 31 is in a vertical state, and the second connecting plate 32 is in a state where the top is inclined toward the direction close to the coal mining face.

[0046] Specifically, in the air curtain mechanism 2, the air pressure of the multiple upper jets 21 gradually increases from the jets close to the coal mining face to the upper jets 21 far from the coal mining face; the air pressure of the lower jets 22 is greater than the air pressure of the upper jets 21 farthest from the coal mining face.

[0047] Multiple upper jet components 21 are arranged in descending order from close to the coal mining surface to far away from the coal mining surface. By setting the air pressure of the upper jet components 21 and the lower jet components 22, the air pressure gradually increases in the direction away from the coal mining surface, so that the dust and water mist brought by the air curtain of the jet components close to the coal mining surface will be driven to move along with the air curtain of the next order under the action of the air curtain formed with the jet components of the next order, and will not continue to approach the hydraulic support in the original direction.

[0048] Specifically, the upper jet element 21 and the lower jet element 22 are both arranged in a fan shape; the contact point of the fan-shaped air curtain of the lower jet element 22 of two adjacent air curtain mechanisms 2 is higher than the intersection of the air curtain of the lower jet element 22 and the air curtain of the upper jet element 21 farthest from the coal mining face; the contact point of the fan-shaped air curtain of the upper jet element 21 of the same order of two adjacent air curtain mechanisms 2 is higher than the intersection of the air curtain of the upper jet element 21 and the upper jet element 21 of the next order.

[0049] By connecting the fan-shaped air curtains of the jet elements of the same order of two adjacent air curtain mechanisms 2, it is possible to prevent gaps from being generated between the two adjacent air curtain mechanisms 2 to allow dust and water mist to pass through the gaps, thereby ensuring the air curtain's isolation effect on dust and water mist.

[0050] Specifically, two auxiliary jet components 5 are arranged on both sides of the highest-ranked upper jet component 21 , and the auxiliary jet components 5 are used to blow air toward the coal mining face from the gap between the fan-shaped air curtain of the highest-ranked upper jet component 21 and the top beam 1 .

[0051] By providing the auxiliary jet element 5 , it is possible to prevent dust and water mist from passing through the gap between the fan-shaped air curtain formed by the highest-ranked jet element and the top beam 1 .

[0052] Specifically, the spray mechanism 4 includes a water spray pipe 41 and a spray head 42. The length direction of the water spray pipe 41 is arranged along the width direction of the top beam 1; the spray head 42 is provided with multiple spray heads 42 and the multiple spray heads 42 are arranged along the length direction of the water spray pipe 41, and the spray head 42 sprays downwardly in an inclined direction close to the coal mining face.

[0053] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A dust-proof spray device between hydraulic supports in a fully-mechanized coal mining face, characterized in that: It comprises a spray mechanism (4), the spray mechanism (4) being arranged at the bottom of the top beam (1) of the hydraulic support and close to one end of the coal mining face, the spray mechanism (4) spraying water mist in an obliquely downward direction toward the coal mining face; and an air curtain mechanism (2), the air curtain mechanism (2) being used to form an air curtain between the hydraulic support and the conveyor belt to block smoke and water from flowing toward the hydraulic support; The air curtain mechanisms (2) are provided in plurality, the plurality of air curtain mechanisms (2) are arranged along the arrangement direction of the plurality of hydraulic supports, the air curtains formed by two adjacent air curtain mechanisms (2) are connected to each other to form a complete air curtain, and at least one air curtain mechanism (2) is provided on each hydraulic support; The air curtain mechanism (2) comprises an upper jet component (21), wherein a plurality of the upper jet components (21) are provided, wherein the plurality of upper jet components (21) are provided at the bottom of the top beam (1) of the hydraulic support and arranged along the length direction of the top beam (1), and the upper jet components (21) are provided on a side of the spray mechanism (4) away from the coal mining face; The upper jet element (21) jets downward in a direction away from the coal mining face, and the angle between the jet angle of the plurality of upper jet elements (21) and the horizontal plane gradually increases from the direction close to the coal mining face to the direction away from the coal mining face, and the air curtain formed by the jet of any upper jet element (21) intersects with the air curtain formed by the adjacent upper jet element (21); The air curtain mechanism (2) further comprises a lower air jet component (22); The upper jet element (21) and the lower jet element (22) are both arranged in a fan shape; The contact point of the fan-shaped air curtains of the lower air jet components (22) of two adjacent air curtain mechanisms (2) is higher than the intersection of the air curtain of the lower air jet component (22) and the air curtain of the upper air jet component (21) farthest from the coal mining surface; The plurality of upper jet components (21) are arranged in descending order from close to the coal mining surface to far from the coal mining surface, and the contact point of the fan-shaped air curtain of the upper jet components (21) of the same order of two adjacent air curtain mechanisms (2) is higher than the intersection of the air curtain of the upper jet component (21) and the upper jet component (21) of the next order.

2. The dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 1 is characterized in that: The lower jet component (22) is provided with one, and the lower jet component (22) is arranged above the hydraulic support base; The lower air jet (22) jets air obliquely downward in a direction close to the coal mining surface, and the air curtain formed by the air jet of the lower air jet (22) intersects with the air curtain formed by the upper air curtain farthest from the coal mining surface.

3. A dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 2, characterized in that: Among the upper air-injecting members (21), the air curtain formed by the upper air-injecting member (21) farthest from the coal mining face is set in a vertical state.

4. A dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 3, characterized in that: The air curtain mechanism (2) further comprises a support assembly (3), wherein the support assembly (3) is used to support the lower air jet component (22); The support assembly (3) comprises a first connecting plate (31), wherein one end of the bottom of the first connecting plate (31) is hinged on the base of the hydraulic support; And a second connecting plate (32), the bottom end of the second connecting plate (32) is hinged to the top end of the first connecting plate (31), and the top end of the second connecting plate (32), the lower jet component (22) is fixedly connected to the first connecting plate (31) on the side close to the coal mining face.

5. The dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 4 is characterized in that: When the top beam (1) of the hydraulic support is unfolded upward and supports the top of the coal mining face, the first connecting plate (31) is in a vertical state, and the second connecting plate (32) is in a state where the top is inclined toward a direction close to the coal mining face.

6. A dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 5, characterized in that: In the air curtain mechanism (2), the air pressure of the plurality of upper air jets (21) gradually increases from the air jets close to the coal mining surface to the upper air jets (21) far from the coal mining surface; The air pressure of the lower air jet component (22) is greater than the air pressure of the upper air jet component (21) which is farthest from the coal mining face.

7. A dust-proof spray device between hydraulic supports in a fully mechanized coal mining face according to claim 6, characterized in that: Two auxiliary jet components (5) are arranged on both sides of the highest-ranked upper jet component (21), and the auxiliary jet components (5) are used to blow air toward the coal mining face from the gap between the fan-shaped air curtain of the highest-ranked upper jet component (21) and the top beam (1).

8. The dust-proof spray device between hydraulic supports of a fully mechanized coal mining face according to claim 7 is characterized in that: The spray mechanism (4) comprises a water spray pipe (41), and the length direction of the water spray pipe (41) is arranged along the width direction of the top beam (1); and a spray head (42), wherein a plurality of the spray heads (42) are arranged along the length direction of the water spray pipe (41), and the spray heads (42) spray downwardly in an inclined direction close to the coal mining face.

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