Environment-friendly dust suppression type multi-stage screening equipment

Abstract

The utility model discloses environment-friendly dust suppression type multi-stage screening equipment which comprises a square frame which is low in left and high in right, buffering assemblies are arranged at the four corners of the upper end of the frame, a plurality of overlapped screening frames are fixed to the upper end of the frame, a dust suppression box is fixed to the uppermost end of the overlapped screening frames, and a motor is fixed to the lower end of the frame. An eccentric wheel is fixed to the output end of the motor, the front end of the eccentric wheel is rotationally connected with one end of a connecting rod, the other end of the connecting rod is rotationally connected with the screening frame, the dust suppression box comprises an air outlet plate, a dust removal box is fixed to the lower end of the air outlet plate, and a filter screen is fixed to the lower end of the dust removal box. According to the multi-stage screening device, dust is reduced, the environment is prevented from being polluted by the dust, the multiple screening frames are stacked and connected together through the first connecting bases and the second connecting bases, multi-stage screening of materials is achieved, and meanwhile the screening net can be conveniently and rapidly replaced according to needs to adjust the screening specification.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage coal screening, in particular to an environmentally friendly dust suppression type multi-stage screening device. Background Art

[0002] Coal is the area where humans mine coal resources in coal-rich mining areas, which is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. The scope of coal mines includes a large area above and below the ground and related facilities. Coal mines are reasonable spaces excavated by humans when digging geological layers rich in coal, usually including tunnels, shafts, and mining faces, etc.

[0003] However, the existing multi-stage screening device may encounter the following problems during use:

[0004] 1. When vibrating and screening coal, floating objects will be generated due to the up and down movement of the coal. If they are not handled, workers will inhale the floating objects into their lungs, which will affect their health. At the same time, the floating objects will continue to float in the air and pollute the environment.

[0005] 2. The existing dust removal device is installed on the screening device, and the fan generates suction to suck the floating objects into the dust removal device and remove the dust through the filter. This increases the fan and other driving motors and increases the cost investment. Utility Model Content

[0006] The utility model aims to provide an environmentally friendly dust suppression type multi-stage screening device, which solves the above-mentioned problems in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmentally friendly dust suppression type multi-stage screening device, comprising a square frame with a lower left side and a higher right side, buffer components are arranged at the four corners of the upper end of the frame, a plurality of overlapping screening frames are fixed to the upper end of the frame, a dust suppression box is fixed to the uppermost end of the overlapping screening frames, a motor is fixed to the lower end of the frame, an eccentric wheel is fixed to the output end of the motor, the front end of the eccentric wheel is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the screening frame;

[0008] The dust suppression box includes an air outlet plate, a dust removal box is fixed at the lower end of the air outlet plate, a filter is fixed at the lower end of the dust removal box, an outer ring of the dust removal box is provided with an air bag fixedly connected to the air outlet plate, an air inlet plate is fixed at the lower end of the air bag, the air bag is slidably connected to the dust suppression box, one end of a first spring is fixed to the four corners of the upper and lower ends of the air bag, a fixing seat is fixed to the other end of the first spring, and the fixing seat is fixed to the dust suppression box.

[0009] Preferably, a plurality of air outlet holes are opened at the upper end of the air outlet plate, and a plurality of air inlet holes are opened at the upper end of the air inlet plate. Both the air outlet holes and the air inlet holes are one-way air vents. The connection between the air bag and the air outlet plate and the air inlet plate is sealed, and the air bag covers the air outlet holes, the air inlet holes and the dust removal box in the center.

[0010] Preferably, two third connecting seats distributed left and right are fixed to the front and rear ends of the dust suppression box along the long sides thereof, and the airbag is made of a flexible material.

[0011] Preferably, two first connecting seats distributed left and right are fixed to the lower sides of the front end and rear end of the screening frame along their long sides, and two second connecting seats distributed left and right are fixed to the upper sides of the front end and rear end of the screening frame along their long sides, respectively. The overlapping screening frames are connected and fixed to each other by the first connecting seats, the second connecting seats and bolts, and a screening net is fixed to the lower end of each screening frame. A discharge port is fixed to the left end of each screening frame, and the discharge ports are distributed in sequence from top to bottom and the openings gradually decrease, and there is no opening at the bottom of the overlapping discharge ports.

[0012] Preferably, the buffer assembly includes a threaded rod, which passes through the frame and is slidably connected to the frame, a sliding rod is fixed to the lower end of the threaded rod, one end of the sliding rod is fixedly connected to the screening frame, and the other end of the sliding rod is slidably connected to the frame, the outer ring of the threaded rod is sleeved with a second spring, the upper end of the second spring is provided with a first spring seat sleeved on the threaded rod, the upper end of the first spring seat is provided with an adjusting nut meshing with the threaded rod, and the lower end of the second spring is provided with a second spring seat fixedly connected to the frame.

[0013] Preferably, the frame is formed by welding U-shaped bars.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. Dust suppression through a dust suppression box is beneficial to reduce dust generation when the device is screening materials and prevent dust from polluting the environment. By stacking multiple screening frames and connecting them together through a first connecting seat and a second connecting seat, multi-stage screening of materials is achieved. At the same time, it is convenient to quickly replace the screening net to adjust the screening specifications according to needs.

[0016] 2. By arranging the first spring at the upper and lower ends of the air inlet plate, an air bag is used to cover the air outlet, air inlet and filter net, and the air outlet and air inlet are one-way through holes, so that the air inlet plate moves up and down while the screening frame moves up and down for screening, and then the air bag contracts back and forth to form suction and blowing force, and the dust generated by the screening is sucked into the cavity of the air bag, and the dust is filtered through the filter net, so that the air is discharged from the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the framework of the utility model;

[0019] Figure 3 This is a schematic diagram of a dust suppression box of the utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the dust suppression box of the utility model

[0021] Figure 5 This is a schematic diagram of a screening frame of the utility model;

[0022] Figure 6 It is a partial cross-sectional schematic diagram of the dust suppression box of the utility model;

[0023] Figure 7 It is a partial cross-sectional schematic diagram of the dust suppression box of the utility model.

[0024] Explanations in the figure: 1. Frame; 2. Screening frame; 3. Dust suppression box; 4. Buffer assembly; 101. Motor; 102. Eccentric wheel; 103. Connecting rod; 104. Sliding rod; 201. First connecting seat; 202. Second connecting seat; 203. Screening net; 204. Discharge port; 301. Air outlet plate; 302. Air bag; 303. Air inlet plate; 304. First spring; 305. Fixed seat; 306. Third connecting seat; 307. Dust removal box; 308. Filter net; 401. Threaded rod; 402. Adjusting nut; 403. First spring seat; 404. Second spring; 405. Second spring seat; 3011. Air outlet; 3031. Air inlet. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0026] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1 , Figure 2 and Figure 3, an environmentally friendly dust suppression type multi-stage screening device, comprising a square frame 1 with a lower left and a higher right, the frame 1 is welded by a U-shaped bar, and buffer components 4 are arranged at the four corners of the upper end of the frame 1, and a plurality of overlapping screening frames 2 are fixed to the upper end of the frame 1, and two left-right distributed first connecting seats 201 are respectively fixed to the lower side of the front end and the rear end of the screening frame 2 along its long side, and two left-right distributed second connecting seats 202 are respectively fixed to the upper side of the front end and the rear end of the screening frame 2 along its long side, and the overlapping screening frames 2 are connected by the first connecting seat 201 and the second connecting seat 202. 02 and bolts are connected and fixed to each other, and a plurality of overlapping screening frames 2 are connected and fixed by using a first connecting seat 201, a second connecting seat 202 and bolts, so as to realize the quick connection and fixation of the screening frame 2. The aperture of the screening net 203 can be quickly adjusted according to the different screening specifications of the material, and the screening frame 2 that meets the requirements can be installed on the device. The device has strong applicability and is convenient for maintenance and disassembly. The lower end of the screening frame 2 is fixed with a screening net 203, and the left end of the screening frame 2 is respectively fixed with a discharge port 204, and the discharge ports 204 are distributed from top to bottom and have openings. The overlapped discharge port 204 has no opening at the bottom, and the plurality of screening nets 203 are sequentially distributed from top to bottom, and the openings on the screening nets 203 are sequentially reduced, so as to realize multi-stage screening of the material, and at the same time, discharge the material of different specifications from the discharge port 204 to prevent the screened material from being mixed again. A dust suppression box 3 is fixed at the top of the overlapping screening frame 2, and dust suppression is performed by the dust suppression box 3, which is conducive to filtering the dust generated during the vibration screening during work, and preventing the dust from flying around and polluting the environment. A motor is fixed at the lower end of the frame 1. 101, an eccentric wheel 102 is fixed to the output end of the motor 101, and the front end of the eccentric wheel 102 is rotatably connected to one end of a connecting rod 103, and the other end of the connecting rod 103 is rotatably connected to the screening frame 2. The eccentric wheel 102 is set to be eccentrically connected to the connecting rod 103, so that the screening frame 2 can move up and down. At the same time, it is slidably connected to the frame 1 through the sliding rod 104, so that the screening frame 2 can only move up and down, and then the material above the screening frame 2 is vibrated. At the same time, the frame 1 is lower on the left and higher on the right. While vibrating the material, the material will also move to the discharge port 204 and finally be discharged.

[0029] See also Figure 3 , Figure 4 , Figure 6 and Figure 7The dust suppression box 3 includes an air outlet plate 301, a dust removal box 307 is fixed at the lower end of the air outlet plate 301, and a filter screen 308 is fixed at the lower end of the dust removal box 307. The air outlet plate 301 and the filter screen 308 are connected and fixed by the dust removal box 307 to form a cavity therebetween, so that the gas with dust can only enter the cavity after being filtered by the filter screen 308, and then be discharged to the outside through the air outlet hole 3011 on the air outlet plate 301. The outer ring of the dust removal box 307 is provided with an air bag 302 fixedly connected to the air outlet plate 301, and the air bag 302 is made of flexible material. The lower end of the air bag 302 is fixed with an air inlet plate 303, and the air bag 302 is connected to the air outlet plate 3 01 and the air inlet plate 303 are sealed, the airbag 302 is made of a flexible material, so that it can be repeatedly contracted and restored, and at the same time cooperate with the air outlet 3011 and the air inlet 3031, so that suction and blowing forces are generated when the airbag 302 contracts and opens, and then the dust generated when the device screens the material is sucked into the interior of the dust suppression box 3, and then the dust is filtered by the filter 308 and discharged from the air outlet 3011. At the same time, the airbag 302 is sealed at the connection with the air outlet plate 301 and the air inlet plate 303, which ensures the sealing of the connection and ensures that the suction and blowing forces are reduced. The airbag 302 cages the air outlet 3011, the air inlet 3031 and the dust removal box 307 The cover is at its center, the airbag 302 is slidably connected to the dust suppression box 3, one end of the first spring 304 is fixed to the four corners of the upper and lower ends of the airbag 302, the other end of the first spring 304 is fixed to a fixing seat 305, the fixing seat 305 is fixed on the dust suppression box 3, a plurality of air outlet holes 3011 are opened on the upper end of the air outlet plate 301, a plurality of air inlet holes 3031 are opened on the upper end of the air inlet plate 303, the air outlet holes 3011 and the air inlet holes 3031 are both one-way air holes, the front and rear ends of the dust suppression box 3 are fixed along their long sides with two third connecting seats 306 distributed on the left and right, the air outlet holes 3011 and the air inlet holes 3031 are one-way through holes, When 302 opens to generate suction, air can only enter from the air inlet 3031. When the airbag 302 contracts to generate blowing force, air can only be blown out from the air outlet 3011, thereby achieving the goal of sucking dust-laden air into the dust suppression box 3 and filtering it through the filter 308 and then discharging it from the air outlet 3011. The air inlet plate 303 is slidably connected to the dust suppression box 3, and the first spring 304 is fixed at the upper and lower ends of the air inlet plate 303. When the screening frame 2 moves up and down, the first spring 304 shrinks and changes accordingly, thereby driving the air inlet plate 303 to move up and down, causing the airbag 302 to shrink or open, thereby generating suction or blowing force, so that the dust suppression box 3 does not need to add a driving device, thereby reducing the cost investment.

[0030] See also Figure 1 and Figure 2The buffer assembly 4 includes a threaded rod 401, which passes through the frame 1 and is slidably connected thereto. A slide bar 104 is fixed to the lower end of the threaded rod 401. One end of the slide bar 104 is fixedly connected to the screening frame 2, and the other end of the slide bar 104 is slidably connected to the frame 1. The outer ring of the threaded rod 401 is sleeved with a second spring 404. The upper end of the second spring 404 is provided with a first spring seat 403 sleeved on the threaded rod 401. The upper end of the first spring seat 403 is provided with an adjusting nut 402 engaged with the threaded rod 401. The lower end of the second spring 404 is provided with a The second spring seat 405 fixedly connected to the frame 1 is connected to the sliding rod 104 through the threaded rod 401, and the sliding rod 104 is fixedly connected to the screening frame 2. When the screening frame 2 moves up and down, the threaded rod 401 will also move up and down. In the process of the screening frame 2 falling, the first spring seat 403 will compress the second spring 404 to prevent the buffer assembly 4 from directly contacting the frame 1, thereby reducing the generation of noise. At the same time, when the screening frame 2 rises, the second spring 404 will recover and rise against the first spring seat 403, so that the screening frame 2 rises faster, making it easier to lift the material on the upper end of the screening frame 2 for screening.

[0031] When the utility model is used:

[0032] First, the motor 101 is powered on to start the motor 101 to work, and the motor 101 drives the eccentric wheel 102 to rotate. The eccentric wheel 102 raises and lowers the screening frame 2 through the connecting rod 103. When the screening frame 2 moves up and down, the threaded rod 401 also moves up and down. When the screening frame 2 falls, the first spring seat 403 compresses the second spring 404 to prevent the buffer assembly 4 from directly contacting the frame 1, thereby reducing the generation of noise. At the same time, when the screening frame 2 rises, the second spring 404 will recover and rise against the first spring seat 403, so that the screening frame 2 rises faster.

[0033] Then, the material is poured in from one end of the screening frame 2 at a high position, and the screening frame 2 moves up and down to lift the material to achieve screening of the material, and the material that meets the specifications is finally discharged from the corresponding discharge port 204;

[0034] Next, when the screening frame 2 moves up and down, the air bag 302 can be repeatedly contracted and restored, and cooperate with the air outlet 3011 and the air inlet 3031, so that the air bag 302 generates suction and blowing force when it contracts and opens, and then the dust generated when the device screens the material is sucked into the interior of the dust suppression box 3, and then the dust is filtered by the filter 308 and discharged from the air outlet 3011. When the screening frame 2 moves up and down and drives the air inlet plate 303 to move up and down, the first spring 304 shrinks and changes accordingly, and then drives the air inlet plate 303 to move up and down, so that the air bag 302 shrinks or opens, and then the frequency of the air inlet plate 303 moving up and down is accelerated, so that the air bag 302 shrinks and opens faster, and then a faster suction or blowing force is generated, thereby increasing the dust suction and dust suppression effect. At the same time, the dust suppression box 3 does not need to increase the driving device, thereby reducing the cost investment;

[0035] Finally, after the material screening is completed, the motor 101 is powered off, and the dust filtered by the filter 308 is cleaned or a new filter 308 is replaced for the next use.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly dust suppression multi-stage screening device, characterized in that: It comprises a square frame (1) with the left side lower than the right side, the four corners of the upper end of the frame (1) are provided with buffer components (4), a plurality of overlapping screening frames (2) are fixed to the upper end of the frame (1), a dust suppression box (3) is fixed to the uppermost end of the overlapping screening frames (2), a motor (101) is fixed to the lower end of the frame (1), an eccentric wheel (102) is fixed to the output end of the motor (101), the front end of the eccentric wheel (102) is rotatably connected to one end of a connecting rod (103), and the other end of the connecting rod (103) is rotatably connected to the screening frame (2); The dust suppression box (3) comprises an air outlet plate (301), a dust removal box (307) is fixed at the lower end of the air outlet plate (301), a filter screen (308) is fixed at the lower end of the dust removal box (307), an outer ring of the dust removal box (307) is provided with an air bag (302) fixedly connected to the air outlet plate (301), an air inlet plate (303) is fixed at the lower end of the air bag (302), the air bag (302) is slidably connected to the dust suppression box (3), one end of a first spring (304) is fixed at the four corners of the upper end and the lower end of the air bag (302), the other end of the first spring (304) is fixed with a fixing seat (305), and the fixing seat (305) is fixed on the dust suppression box (3).

2. The environmentally friendly dust suppression multi-stage screening equipment according to claim 1 is characterized in that: The upper end of the air outlet plate (301) is provided with a plurality of air outlet holes (3011), and the upper end of the air inlet plate (303) is provided with a plurality of air inlet holes (3031). The air outlet holes (3011) and the air inlet holes (3031) are both one-way air vents. The connection between the air bag (302) and the air outlet plate (301) and the air inlet plate (303) is sealed. The air bag (302) covers the air outlet holes (3011), the air inlet holes (3031) and the dust removal box (307) at its center.

3. The environmentally friendly dust suppression multi-stage screening equipment according to claim 1 is characterized in that: Two third connecting seats (306) distributed left and right are fixed to the front and rear ends of the dust suppression box (3) along its long sides, and the airbag (302) is made of flexible material.

4. The environmentally friendly dust suppression multi-stage screening equipment according to claim 1 is characterized in that: Two first connecting seats (201) distributed on the left and right are fixed to the lower sides of the front and rear ends of the screening frame (2) along the long sides thereof, and two second connecting seats (202) distributed on the left and right are fixed to the upper sides of the front and rear ends of the screening frame (2) along the long sides thereof, respectively. The overlapping screening frames (2) are connected and fixed to each other via the first connecting seats (201), the second connecting seats (202) and bolts, a screening net (203) is fixed to the lower ends of the screening frames (2), and a discharge port (204) is fixed to the left ends of the screening frames (2), the discharge ports (204) are distributed in sequence from top to bottom and the openings are gradually reduced, and the lowest parts of the overlapping discharge ports (204) have no openings.

5. The environmentally friendly dust suppression multi-stage screening equipment according to claim 1 is characterized in that: The buffer assembly (4) comprises a threaded rod (401), the threaded rod (401) passes through the frame (1) and is slidably connected thereto, a sliding rod (104) is fixed to the lower end of the threaded rod (401), one end of the sliding rod (104) is fixedly connected to the screening frame (2), and the other end of the sliding rod (104) is slidably connected to the frame (1), the outer ring of the threaded rod (401) is sleeved with a second spring (404), the upper end of the second spring (404) is provided with a first spring seat (403) sleeved on the threaded rod (401), the upper end of the first spring seat (403) is provided with an adjusting nut (402) meshing with the threaded rod (401), and the lower end of the second spring (404) is provided with a second spring seat (405) fixedly connected to the frame (1).

6. The environmentally friendly dust suppression multi-stage screening equipment according to claim 1 is characterized in that: The frame (1) is formed by welding U-shaped bars.

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