Dust-raising-preventing sand screening machine

Abstract

The utility model relates to the technical field of sand screening equipment, in particular to a dust raising prevention sand screening machine which comprises a protective shell, a spiral conveyor, a screening mechanism and a dust prevention mechanism. A spiral conveyor is connected to the upper portion of the protective shell, a screening mechanism is arranged in the protective shell, and a dustproof mechanism is arranged on one side of the protective shell. The dustproof mechanism comprises a fine material protective cover, a fine material box, a fine material short pipe and a branch pipe, and one side of the protective shell is connected with the fine material protective cover through bolts. According to the dust-raising-preventing sand screening machine, by starting the water pump, water in the water tank is separated out of water mist from the coarse material spraying head, dust falling is conducted on dust raising in the coarse material protective cover, water mist is separated out of the fine material spraying head, dust falling is conducted on dust raising in the fine material protective cover, and then the sand screening machine can prevent dust raising; the driving motor is started to drive the threaded rod to rotate, the protruding rod roller moves along the hole in the bottom of the screening groove body, blockages in the hole are pushed out, and therefore the sand screening machine can prevent blockage.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening equipment, in particular to a sand screening machine for preventing dust from flying. Background Technique

[0002] With the development of urbanization, more and more buildings are being constructed in cities. Before the common sand and gravel used in buildings are applied to construction, they need to be screened by a sand screening machine to ensure that the sand and gravel used meet the requirements of building construction. There are still certain defects in the existing sand screening machines during use, such as;

[0003] The existing sand screening machines usually directly expose the feeding port and the discharging port. During screening, it is easy for dust to fly due to vibration, polluting the environment and endangering the health of workers. Most of them cannot prevent dust from flying. Moreover, during the sand screening process of the sand screening machine, some impurities will inevitably block in the sieve holes, affecting subsequent screening. And the existing sand screening machines usually need to remove the sieve mesh for cleaning, and most of them do not have an anti-blocking structure problem. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sand screening machine for preventing dust from flying to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a sand screening machine for preventing dust from flying, comprising: a protective shell, a screw conveyor, a screening mechanism and a dust prevention mechanism;

[0006] The screw conveyor is connected above the protective shell, and a screening mechanism is arranged inside the protective shell, and a dust prevention mechanism is arranged on one side of the protective shell;

[0007] The dust prevention mechanism includes: a fine material shield, a fine material box, a fine material short pipe, a fine material spray head, a coarse material shield, a coarse material box, a coarse material short pipe, a coarse material spray head, a water tank, a water pump, a main flow pipe and a branch pipe. A fine material shield is connected to one side of the protective shell by bolts. A fine material box is slidably connected to the front part of the fine material shield, and a fine material short pipe penetrates and is connected to the upper part of the inner wall of the fine material shield. The lower end of the fine material short pipe is connected with a fine material spray head, and the fine material spray head is connected to the upper part of the inner wall of the fine material shield.

[0008] Preferably, a coarse material shield is connected to the side of the protective shell far away from the fine material shield by bolts. A coarse material box is slidably connected to the front part of the coarse material shield, and a coarse material short pipe penetrates and is connected to the upper part of the inner wall of the coarse material shield. The lower end of the coarse material short pipe is connected with a coarse material spray head, and the coarse material spray head is connected to the upper part of the inner wall of the coarse material shield.

[0009] Preferably, a water tank is connected to the lower part of the inner wall of the protective shell, and a water pump is connected to one side of the water tank. The water pump is connected to the lower part of the inner wall of the protective shell.

[0010] Preferably, one end of the water pump away from the water tank is connected with a main pipe, the main pipe penetrates through the inner wall of the protective shell and is connected to the front part of the protective shell, and the other end of the main pipe is connected with a short thick material pipe. One side of the main pipe is connected with a branch pipe, the branch pipe is connected to the front part of the protective shell, and the other end of the branch pipe is connected with a short thin material pipe.

[0011] Preferably, the screening mechanism includes: a first vertical plate, a screening tank body, a second vertical plate, a transmission plate, a swing motor, a swing shaft, a driving motor, a threaded rod, a first slider, a convex rod roller, a second slider and a sliding rod. One side of the inner wall of the protective shell is rotatably connected with a first vertical plate, the screening tank body is connected above the first vertical plate, the bottom of the screening tank body is connected with a second vertical plate, and the lower part of the second vertical plate is rotatably connected with a transmission plate;

[0012] The front part of the protective shell is connected with a swing motor through a motor base, the output end of the swing motor penetrates through the inner wall of the protective shell and is connected with a swing shaft, the swing shaft is rotatably connected to the rear part of the inner wall of the protective shell, and the swing shaft penetrates and rotates in the transmission plate.

[0013] Preferably, one side of the first vertical plate is connected with a driving motor through a motor base, the output end of the driving motor is connected with a threaded rod, and the threaded rod is rotatably connected to one side of the second vertical plate.

[0014] Preferably, the threaded rod is threadedly connected with a first slider, the front part of the first slider is rotatably connected with a convex rod roller, and the convex rod roller is meshed and connected below the screening tank body.

[0015] Preferably, the front part of the convex rod roller is rotatably connected with a second slider, a sliding rod is slidably connected in the second slider, and the sliding rod is connected between the first vertical plate and the second vertical plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this sand screening machine with dust prevention, by starting the water pump, water in the water tank is separated into water mist from the thick material spray head to reduce dust in the thick material protective cover, and water mist is separated from the thin material spray head to reduce dust in the thin material protective cover, thereby making the sand screening machine dust-proof; by starting the driving motor to drive the threaded rod to rotate, the convex rod roller moves along the holes at the bottom of the screening tank body to push out the blockages in the holes, thereby making the sand screening machine anti-blocking. The specific contents are as follows:

[0017] 1. The protective shell prevents dust from scattering during feeding and screening, and the thin material protective cover and the thick material protective cover prevent the screened materials from scattering dust. By starting the water pump, the dust in the thick material protective cover is reduced and falls into the thick material box, and the dust in the thin material protective cover is reduced and falls into the thin material box, thereby making the sand screening machine dust-proof;

[0018] 2. Start the swing motor to vibrate the screening trough body, screen the materials, start the driving motor to drive the threaded rod to rotate on one side of the second vertical plate, and let the convex rod roller move along the holes at the bottom of the screening trough body to push out the blockages in the holes, thereby preventing the sand screening machine from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional front view structure diagram of the protective shell of the present utility model;

[0020] Figure 2 It is a schematic front view structure diagram of the present utility model;

[0021] Figure 3 It is a schematic three-dimensional structure diagram of the convex rod roller of the present utility model;

[0022] Figure 4 It is a schematic three-dimensional structure diagram of the first slider of the present utility model.

[0023] In the figure: 1. Protective shell; 2. Screw conveyor; 3. Screening mechanism; 301. First vertical plate; 302. Screening trough body; 303. Second vertical plate; 304. Transmission plate; 305. Swing motor; 306. Swing shaft; 307. Driving motor; 308. Threaded rod; 309. First slider; 310. Convex rod roller; 311. Second slider; 312. Slide rod; 4. Dust-proof mechanism; 401. Fine material shield; 402. Fine material box; 403. Fine material short pipe; 404. Fine material spray head; 405. Coarse material shield; 406. Coarse material box; 407. Coarse material short pipe; 408. Coarse material spray head; 409. Water tank; 410. Water pump; 411. Main flow pipe; 412. Branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1 and Figure 2, the present utility model provides a technical solution: a sand screening machine for preventing dust flying, including: a protective shell 1, a screw conveyor 2, a screening mechanism 3 and a dust prevention mechanism 4; a screw conveyor 2 is connected above the protective shell 1, and a screening mechanism 3 is arranged inside the protective shell 1, and a dust prevention mechanism 4 is arranged on one side of the protective shell 1; the dust prevention mechanism 4 includes: a fine material cover 401, a fine material box 402, a fine material short pipe 403, a fine material spray head 404, a coarse material cover 405, a coarse material box 406, a coarse material short pipe 407, a coarse material spray head 408, a water tank 409, a water pump 410, a main flow pipe 411 and a branch pipe 412. A fine material cover 401 is connected to one side of the protective shell 1 by bolts. A fine material box 402 is slidably connected to the front part of the fine material cover 401, and a fine material short pipe 403 penetrates and is connected to the upper part of the inner wall of the fine material cover 401. The lower end of the fine material short pipe 403 is connected to a fine material spray head 404, and the fine material spray head 404 is connected to the upper part of the inner wall of the fine material cover 401. A coarse material cover 405 is connected to the side of the protective shell 1 far from the fine material cover 401 by bolts. A coarse material box 406 is slidably connected to the front part of the coarse material cover 405, and a coarse material short pipe 407 penetrates and is connected to the upper part of the inner wall of the coarse material cover 405. The lower end of the coarse material short pipe 407 is connected to a coarse material spray head 408, and the coarse material spray head 408 is connected to the upper part of the inner wall of the coarse material cover 405. The lower part of the inner wall of the protective shell 1 is connected to a water tank 409, and a water pump 410 is connected to one side of the water tank 409. The water pump 410 is connected to the lower part of the inner wall of the protective shell 1. One end of the water pump 410 far from the water tank 409 is connected to a main flow pipe 411. The main flow pipe 411 penetrates the inner wall of the protective shell 1 and is connected to the front part of the protective shell 1, and the other end of the main flow pipe 411 is connected to the coarse material short pipe 407. A branch pipe 412 is connected to one side of the main flow pipe 411. The branch pipe 412 is connected to the front part of the protective shell 1, and the other end of the branch pipe 412 is connected to the fine material short pipe 403.

[0026] During specific implementation, the protective shell 1 prevents dust from flying out during feeding and screening. The fine material cover 401 and the coarse material cover 405 prevent the screened materials from flying out. The water pump 410 is started to pump out the water in the water tank 409, send it into the coarse material short pipe 407 through the main flow pipe 411, and divide the water into water mist from the coarse material spray head 408 to reduce the dust in the coarse material cover 405, and it falls into the coarse material box 406. Part of the water enters the fine material short pipe 403 through the branch pipe 412, and divides the water into water mist from the fine material spray head 404 to reduce the dust in the fine material cover 401, and it falls into the fine material box 402, so as to make the sand screening machine prevent dust flying.

[0027] Refer to Figures 1 - 4It can be known that the screening mechanism 3 includes: a first vertical plate 301, a screening trough 302, a second vertical plate 303, a transmission plate 304, a swing motor 305, a swing shaft 306, a drive motor 307, a threaded rod 308, a first slider 309, a convex rod roller 310, a second slider 311 and a slide rod 312. One side of the inner wall of the protective shell 1 is rotatably connected to the first vertical plate 301. Above the first vertical plate 301 is connected to the screening trough 302. The bottom of the screening trough 302 is connected to the second vertical plate 303. Below the second vertical plate 303 is rotatably connected to the transmission plate 304. The front part of the protective shell 1 is connected to the swing motor 305 through a motor base. The output end of the swing motor 305 penetrates the inner wall of the protective shell 1 and is connected to the swing shaft 306. The swing shaft 306 is rotatably connected to the rear part of the inner wall of the protective shell 1, and the swing shaft 306 penetrates and rotates in the transmission plate 304. One side of the first vertical plate 301 is connected to the drive motor 307 through a motor base. The output end of the drive motor 307 is connected to the threaded rod 308. The threaded rod 308 is rotatably connected to one side of the second vertical plate 303. The threaded rod 308 is threadedly connected to the first slider 309. The front part of the first slider 309 is rotatably connected to the convex rod roller 310. The convex rod roller 310 is meshed and connected below the screening trough 302. The front part of the convex rod roller 310 is rotatably connected to the second slider 311. The slide rod 312 is slidably connected in the second slider 311. The slide rod 312 is connected between the first vertical plate 301 and the second vertical plate 303.

[0028] During specific implementation, start the swing motor 305 to drive the swing shaft 306 to rotate. The swing shaft 306 drives the transmission plate 304 to rotate between the swing shaft 306 and the second vertical plate 303, pushing the screening trough 302 to move, driving the first vertical plate 301 to rotate on the inner wall of the protective shell 1, making the screening trough 302 vibrate, and screening the materials. Start the drive motor 307 to drive the threaded rod 308 to rotate on one side of the second vertical plate 303, driving the first slider 309 to move. The second slider 311 slides along the slide rod 312, making the convex rod roller 310 move along the holes at the bottom of the screening trough 302, and pushing out the blockages in the holes, so as to prevent blockage of this sand screening machine.

[0029] In summary: When using the sand screening machine for preventing dust, first, pour the material to be screened into the spiral conveyor 2, and it is sent onto the screening trough 302 in the protective shell 1 by the screw rod in the spiral conveyor 2. The swing motor 305 drives the swing shaft 306 to rotate, driving the first vertical plate 301 to rotate on the inner wall of the protective shell 1, causing the screening trough 302 to vibrate for screening. Larger materials slide into the coarse material shield 405 from the screening trough 302 and fall into the coarse material box 406. Smaller materials pass through the screening trough 302 and are guided by the inclined plate in the protective shell 1 and slide into the fine material shield 401 and fall into the fine material box 402. When it is necessary to take out the screened material, operate the controller in front of and behind the protective shell 1, start the water pump 410, and let the fine material spray head 404 and the coarse material spray head 408 spray water mist for dust suppression. Then, pull out the fine material box 402 and the coarse material box 406 and pour the materials. If the screening effect deteriorates, start the drive motor 307 to drive the convex rod roller 310 to move along the holes at the bottom of the screening trough 302 to push out the blockages in the holes. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sand screening machine for preventing dust from rising, comprising: A protective shell (1), a screw conveyor (2), a screening mechanism (3) and a dust-proof mechanism (4). It is characterized in that; A screw conveyor (2) is connected above the protective shell (1), and a screening mechanism (3) is arranged inside the protective shell (1). A dust-proof mechanism (4) is arranged on one side of the protective shell (1); The dust-proof mechanism (4) includes: a fine material shield (401), a fine material box (402), a fine material short pipe (403), a fine material spray head (404), a coarse material shield (405), a coarse material box (406), a coarse material short pipe (407), a coarse material spray head (408), a water tank (409), a water pump (410), a main pipe (411) and a branch pipe (412). A fine material shield (401) is connected to one side of the protective shell (1) by bolts. A fine material box (402) is slidably connected to the front part of the fine material shield (401), and a fine material short pipe (403) is connected through the upper part of the inner wall of the fine material shield (401). The lower end of the fine material short pipe (403) is connected to a fine material spray head (404), and the fine material spray head (404) is connected to the upper part of the inner wall of the fine material shield (401).

2. The sand screening machine for preventing dust from flying according to claim 1, characterized in that: A coarse material shield (405) is connected to the side of the protective shell (1) away from the fine material shield (401) by bolts. A coarse material box (406) is slidably connected to the front part of the coarse material shield (405), and a coarse material short pipe (407) is connected through the upper part of the inner wall of the coarse material shield (405). The lower end of the coarse material short pipe (407) is connected to a coarse material spray head (408), and the coarse material spray head (408) is connected to the upper part of the inner wall of the coarse material shield (405).

3. The sand screening machine for preventing dust from flying according to claim 2, wherein: A water tank (409) is connected to the lower part of the inner wall of the protective shell (1), and a water pump (410) is connected to one side of the water tank (409). The water pump (410) is connected to the lower part of the inner wall of the protective shell (1).

4. The sand screening machine for preventing dust from flying as claimed in claim 3, wherein: One end of the water pump (410) away from the water tank (409) is connected to a main pipe (411). The main pipe (411) passes through the inner wall of the protective shell (1) and is connected to the front part of the protective shell (1), and the other end of the main pipe (411) is connected to the coarse material short pipe (407). A branch pipe (412) is connected to one side of the main pipe (411). The branch pipe (412) is connected to the front part of the protective shell (1), and the other end of the branch pipe (412) is connected to the fine material short pipe (403).

5. The sand screening machine for preventing dust from flying according to claim 1, wherein: The screening mechanism (3) includes: a first vertical plate (301), a screening trough body (302), a second vertical plate (303), a transmission plate (304), a swing motor (305), a swing shaft (306), a drive motor (307), a threaded rod (308), a first slider (309), a convex rod roller (310), a second slider (311) and a slide rod (312). One side of the inner wall of the protective shell (1) is rotatably connected to the first vertical plate (301). The screening trough body (302) is connected above the first vertical plate (301). The bottom of the screening trough body (302) is connected to the second vertical plate (303). The lower part of the second vertical plate (303) is rotatably connected to the transmission plate (304). The front part of the protective shell (1) is connected with a swing motor (305) through a motor base. The output end of the swing motor (305) penetrates the inner wall of the protective shell (1) and is connected with a swing shaft (306). The swing shaft (306) is rotatably connected to the rear part of the inner wall of the protective shell (1), and the swing shaft (306) penetrates and rotates in the transmission plate (304).

6. The sand screening machine for preventing dust flying according to claim 5, characterized in that: One side of the first vertical plate (301) is connected with a drive motor (307) through a motor base. The output end of the drive motor (307) is connected with a threaded rod (308). The threaded rod (308) is rotatably connected to one side of the second vertical plate (303).

7. The sand screening machine for preventing dust from flying according to claim 6, characterized in that: The threaded rod (308) is threadedly connected with a first slider (309). The front part of the first slider (309) is rotatably connected with a convex rod roller (310). The convex rod roller (310) is meshed and connected below the screening trough body (302).

8. The sand screening machine for preventing dust from flying according to claim 7, wherein: The front part of the convex rod roller (310) is rotatably connected with a second slider (311). A slide rod (312) is slidably connected in the second slider (311). The slide rod (312) is connected between the first vertical plate (301) and the second vertical plate (303).

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