Dustproof equipment device of pulp shooting machine

Abstract

The utility model relates to the technical field of roadway support, in particular to a dust-proof equipment device of a pulp shooting machine, which comprises a feed hopper, a support frame, a screen, an annular water pipe and a spray head, the feed hopper consists of an upper annular part and a lower funnel part, the support frame is fixed below the inner wall of the annular part, and the screen is fixed on the support frame. The bottom of the edge of the screen is fixed to the top of the supporting frame. The annular water pipe is fixed to the bottom of the supporting frame, a plurality of spraying heads communicated with an inner cavity of the annular water pipe are annularly arrayed on the inner wall of the annular water pipe, and a water inlet pipe is connected to the outer wall of the annular water pipe. The spraying heads are arranged on the lower edge of the screen to spray water, and slurry passing through the screen can be uniformly sprayed, so that the rebound rate of the slurry is reduced, the dust concentration is effectively reduced, the problem of poor sanitation of equipment in a roadway is solved, dust inhaled by workers during working is reduced, and the occupational disease incidence rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a dust-proof device for a shotcrete machine. Background Art

[0002] Coal mining and infrastructure construction, such as highways, railways, tunnels, and hydropower projects, often require tunnel or roadway support. After tunnel excavation is complete, a shotcrete machine is typically used to ensure structural stability. Currently, during shotcrete spraying, uneven water supply to the nozzles can cause excessive rebound and high dust concentrations. This leads to poor hygiene conditions for equipment within the roadway and excessive dust inhalation by workers, increasing the incidence of occupational illnesses.

[0003] Based on the above problems, the utility model proposes a dust-proof device for a spraying machine. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a dust-proof equipment device for a spraying machine. By arranging a spray head at the lower edge of the screen to spray water, the slurry passing through the screen can be evenly sprayed with water, thereby reducing the rebound rate of the slurry, effectively reducing the dust concentration, and reducing the problem of poor hygiene of various equipment in the tunnel, thereby reducing the inhalation of dust by workers at work and reducing the incidence of occupational diseases.

[0005] In order to achieve the purpose of this utility model, the technical solution adopted by this utility model is:

[0006] The utility model discloses a dust-proof device for a spraying machine, comprising a feed hopper, a support frame, a screen, an annular water pipe and a spray head. The feed hopper is composed of an upper annular portion and a lower funnel portion. The funnel portion is a tapered structure that is wide at the top and narrow at the bottom. The top end of the funnel portion is connected to the bottom end of the annular portion.

[0007] The support frame is fixed below the inner wall of the annular portion. The support frame is annular in structure and its cross section is an inverted "L"-shaped structure. The edge bottom of the screen is fixed to the top of the support frame; the annular water pipe is fixed to the bottom of the support frame. The inner wall of the annular water pipe has a plurality of spray heads connected to its inner cavity in an annular array. The outer wall of the annular water pipe is connected to a water inlet pipe, and a gate valve is provided on the water inlet pipe.

[0008] The support frame includes a circular transverse plate and a longitudinal plate, the inner wall of the longitudinal plate is connected to the lower part of the inner wall of the circular portion, and the inner end bottom of the transverse plate is connected to the top of the longitudinal plate; the outer wall of the annular water pipe is fixed to the outer wall of the longitudinal plate.

[0009] The distance between the outer end of the spray head and the outer wall of the longitudinal plate is smaller than the distance between the inner wall of the transverse plate and the outer wall of the longitudinal plate.

[0010] The bottom of the edge of the screen is fixed to the top of the transverse plate by a tensioning mechanism, and the tensioning mechanism includes a support plate, an inclined plate, a tensioning bolt and a tensioning nut. The support plate is an annular structure, and the bottom inner end of the bottom of the screen is fixed to the inner side of the top of the support plate, the bottom end of the inclined plate and the top outer end of the support plate are integrally formed, and the top of the inclined plate is inclined outward; the tensioning bolt includes a screw, a nut and a limit block, the nut is a square structure fixed to the top of the screw, the limit block is a circular structure fixed to the top of the nut, the outer diameter of the limit block is greater than the width of the nut, the middle part of the side wall of the inclined plate is an annular array with several square holes for the nuts to pass through, and the side wall of the annular part is an annular array with several inclined holes for the screw to pass through, and the external thread on the outer wall of the screw is threadedly engaged with the threaded hole of the tensioning nut.

[0011] The axis of the inclined hole is perpendicular to the extension line of the length direction of the inclined plate; the angle between the inclined plate and the support plate is 110°~120°.

[0012] A rubber block is provided between the tensioning nut and the outer wall of the annular portion. The rubber block is annular in structure and is sleeved on the outside of the screw. The rear end surface of the rubber block forms a vertical surface that fits the outer wall of the annular portion.

[0013] The beneficial effects of the present invention are:

[0014] The utility model provides a spray head at the lower edge of the screen to spray water, which can evenly spray water on the slurry passing through the screen, thereby reducing the rebound rate of the slurry, effectively reducing the dust concentration, and alleviating the problem of poor hygiene of various equipment in the tunnel, thereby reducing the inhalation of dust by workers during work and reducing the incidence of occupational diseases; it is easy to operate, and in the use of the tunnel spraying machine, the effect is remarkable, the process is simple, and it is safe and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 for Figure 2 Section along AA;

[0018] Figure 4 for Figure 3 A partial enlarged view of

[0019] Figure 5It is a partial structural diagram of the utility model.

[0020] In the figure: 1 feed hopper, 2 support frame, 3 screen, 4 annular water pipe, 5 spray head, 6 tensioning mechanism, 7 water inlet pipe, 8 gate valve, 11 annular part, 12 funnel part, 21 transverse plate, 22 longitudinal plate, 61 support plate, 62 inclined plate, 63 tensioning bolt, 64 tensioning nut, 65 square hole, 66 inclined hole, 67 rubber block, 631 screw, 632 nut, 633 limit block. DETAILED DESCRIPTION

[0021] The utility model is further described below:

[0022] See also Figure 1-5 ,

[0023] The utility model discloses a dust-proof device for a spraying machine, comprising a feed hopper 1, a support frame 2, a screen 3, an annular water pipe 4 and a spray head 5. The feed hopper 1 is composed of an upper annular portion 11 and a lower funnel portion 12. The funnel portion 12 is a tapered structure that is wide at the top and narrow at the bottom. The top end of the funnel portion 12 is connected to the bottom end of the annular portion 11.

[0024] The support frame 2 is fixed below the inner wall of the annular portion 11. The support frame 2 is annular in structure and has an inverted "L"-shaped cross section. The bottom edge of the screen 3 is fixed to the top of the support frame 2. The annular water pipe 4 is fixed to the bottom of the support frame 2. The inner wall of the annular water pipe 4 is provided with a plurality of spray heads 5 connected to its inner cavity in an annular array. The outer wall of the annular water pipe 4 is connected to a water inlet pipe 7. A gate valve 8 is provided on the water inlet pipe 7. By arranging the spray head 5 at the lower edge of the screen 3 to spray water, the water inlet pipe 7 can be effectively prevented from being contaminated. The slurry passing through the screen 3 is evenly sprayed with water, thereby reducing the rebound rate of the slurry, effectively reducing the dust concentration, and reducing the problem of poor hygiene of various equipment in the tunnel, thereby reducing the inhalation of dust by workers during work and reducing the incidence of occupational diseases; it is easy to operate, and in the use of the tunnel spraying machine, the effect is significant, the process is simple, and it is safe and practical; specifically, water is pumped into the annular water pipe 4 through the water inlet pipe 7, and the spray head 5 is connected to the inner cavity of the annular water pipe 4, so that the slurry can be evenly sprayed with water; a gate valve 8 is provided on the water inlet pipe 7 to switch the spray head 5.

[0025] Furthermore, the support frame 2 includes a ring-shaped transverse plate 21 and a longitudinal plate 22, the inner wall of the longitudinal plate 22 is connected to the lower part of the inner wall of the annular portion 11, and the inner end bottom of the transverse plate 21 is connected to the top of the longitudinal plate 22; the outer wall of the annular water pipe 4 is fixed on the outer wall of the longitudinal plate 22, the longitudinal plate 22 of the support frame 2 can install the annular water pipe 4, and the transverse plate 22 of the support frame 2 can fix the screen 3.

[0026] Furthermore, the distance between the outer end of the spray head 5 and the outer wall of the longitudinal plate is smaller than the distance between the inner wall of the transverse plate 21 and the outer wall of the longitudinal plate, ensuring that the slurry will not fall directly on the spray head 5 when passing through the screen 3, that is, the transverse plate 21 can shield and protect the spray head 5, thereby extending its service life.

[0027] The bottom edge of the screen 3 is fixed to the top of the transverse plate 21 by a tensioning mechanism 6, and the tensioning mechanism 6 can stably fix the screen 3 on the support frame 2 to ensure that it will not be displaced during the vibration process, and it is convenient to install and remove the screen 3; the tensioning mechanism 6 includes a support plate 61, an inclined plate 62, a tensioning bolt 63 and a tensioning nut 64, and the support plate 61 is annular in structure. The bottom inner end of the screen 3 is fixed to the top inner side of the support plate 61, the bottom end of the inclined plate 62 is integrally formed with the top outer end of the support plate 61, and the top of the inclined plate 62 is inclined outwardly arranged; the tensioning bolt 63 includes a screw 631, a nut 632 and a limit block 633, the nut 632 is a square structure fixed to the top of the screw 631, the limit block 633 is a circular structure fixed to the top of the nut 632, the outer diameter of the limit block 633 is larger than the width of the nut 632, and the inclined plate 62 is a circle structure fixed to the top of the nut The middle part of the side wall of the plate 62 is provided with a plurality of square holes 65 for the nuts 632 to pass through in an annular array, and the side wall of the annular portion 11 is provided with a plurality of oblique holes 66 for the screw rods 631 to pass through in an annular array. The external threads on the outer wall of the screw rods 631 are threadedly engaged with the threaded holes of the tensioning nut 64. Specifically, the screen 3 is first fixed to the support plate 61, and then the screw rods 631 of the tensioning bolts 63 are passed through the square holes 65 and the oblique holes 66, and the screw rods 631 are screwed in. The cap 632 is matched and engaged with the square hole 65, and then the rubber block 67 is inserted from the bottom of the screw 631, and finally the tensioning nut 64 is tightened from the bottom of the screw 631 to tighten the inclined plate 62, that is, to tension the screen 3; since the inclined plate 62 is set at an angle, the tensioning force is outward and downward during the tightening of the tensioning nut 64, that is, the tensioning force will produce two components of force, one outward and one downward, and at the same time limit the inclined plate 62 in the horizontal and vertical directions, thereby fixing the screen 3.

[0028] Furthermore, the axis of the inclined hole 66 is perpendicular to the extension line of the length direction of the inclined plate 62, and the two are perpendicular to each other, so that when the tensioning nut 64 is tightened, the tensioning force can be effectively transmitted to the inclined plate 62. Preferably, the angle between the inclined plate 62 and the support plate 61 is 110°~120°.

[0029] Furthermore, a rubber block 67 is provided between the tensioning nut 64 and the outer wall of the annular portion 11. The rubber block 67 is in an annular structure and is mounted on the outside of the screw 631. The rear end face of the rubber block 67 forms a vertical surface that fits the outer wall of the annular portion 11. By providing the rubber block 67, when the tensioning nut 64 is tightened, its rear end face will not generate shear force with the outer wall of the annular portion 11, and the contact surface between the two is small, which is prone to generate large friction and cause damage, and the tensioning force of the tensioning nut 64 can also be effectively transmitted to the inclined plate.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformation made using the contents of the present invention specification and drawings or directly or indirectly applied in the relevant technical field shall be included in the patent protection scope of the present invention.

Claims

1. A dust-proof device for a spraying machine, characterized in that: It includes a feed hopper (1), a support frame (2), a screen (3), an annular water pipe (4) and a spray head (5). The feed hopper (1) is composed of an upper annular portion (11) and a lower funnel portion (12), wherein the funnel portion (12) is a conical structure that is wide at the top and narrow at the bottom, and the top end of the funnel portion (12) is connected to the bottom end of the annular portion (11); The support frame (2) is fixed below the inner wall of the annular portion (11); the support frame (2) is an annular structure, and its cross section is an inverted "L"-shaped structure; the bottom edge of the screen (3) is fixed to the top of the support frame (2); The annular water pipe (4) is fixed to the bottom of the support frame (2), and a plurality of spray heads (5) connected to the inner cavity of the annular water pipe (4) are arranged in an annular array on the inner wall of the annular water pipe (4). The outer wall of the annular water pipe (4) is connected to a water inlet pipe (7), and a gate valve (8) is provided on the water inlet pipe (7).

2. A spraying machine dust prevention device according to claim 1, characterized in that: The support frame (2) comprises an annular transverse plate (21) and a longitudinal plate (22), wherein the inner wall of the longitudinal plate (22) is connected to the lower portion of the inner wall of the annular portion (11), and the inner bottom of the transverse plate (21) is connected to the top of the longitudinal plate (22); the outer wall of the annular water pipe (4) is fixed to the outer wall of the longitudinal plate (22).

3. A spraying machine dust prevention device according to claim 2, characterized in that: The distance between the outer end of the spray head (5) and the outer wall of the longitudinal plate is smaller than the distance between the inner wall of the transverse plate (21) and the outer wall of the longitudinal plate.

4. A spraying machine dust prevention device according to claim 3, characterized in that: The bottom edge of the screen (3) is fixed to the top of the transverse plate (21) through a tensioning mechanism (6), the tensioning mechanism (6) comprising a support plate (61), an inclined plate (62), a tensioning bolt (63) and a tensioning nut (64), the support plate (61) being annular in structure, the bottom inner end of the screen (3) being fixed to the inner side of the top of the support plate (61), the bottom end of the inclined plate (62) being integrally formed with the top outer end of the support plate (61), and the top end of the inclined plate (62) being tilted outward; the tensioning bolt (63) comprising a screw rod (631), a nut (632) and a limit block (633), The nut (632) is a square structure fixed to the top of the screw (631), the limit block (633) is a circular structure fixed to the top of the nut (632), the outer diameter of the limit block (633) is greater than the width of the nut (632), the middle part of the side wall of the inclined plate (62) is annularly arrayed with a plurality of square holes (65) for the nut (632) to pass through, the side wall of the annular portion (11) is annularly arrayed with a plurality of oblique holes (66) for the screw (631) to pass through, and the external thread on the outer wall of the screw (631) is threadedly engaged with the threaded hole of the tensioning nut (64).

5. A spraying machine dust prevention device according to claim 4, characterized in that: The axis of the inclined hole (66) is perpendicular to the extension line of the length direction of the inclined plate (62); and the angle between the inclined plate (62) and the support plate (61) is 110° to 120°.

6. A spraying machine dust prevention device according to claim 5, characterized in that: A rubber block (67) is provided between the tensioning nut (64) and the outer wall of the annular portion (11). The rubber block (67) is annular in structure and is sleeved onto the outside of the screw rod (631). The rear end surface of the rubber block (67) forms a vertical surface that fits the outer wall of the annular portion (11).

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