Dust suppression device of bridge type coal unloader

Abstract

The utility model discloses a dust suppression device of a bridge type coal unloader, the bridge type coal unloader comprises an upper layer platform and a lower layer platform, a coal bucket is installed on the upper layer platform, a conveying belt is arranged on the lower layer platform, the dust suppression device comprises a water storage tank and a water spraying pipeline, and the water storage tank is arranged on the outer side of the starting end of the conveying belt. The water spraying pipeline is connected with a water outlet of the water storage tank through a water pump and comprises a first branch and a second branch, the first branch comprises a vertical section and an upper horizontal section connected to the upper end of the vertical section, the upper end of the vertical section penetrates through the upper-layer platform and extends to the upper edge of the coal bucket, and the upper horizontal section extends along the edge of the coal bucket; first sprayers facing the coal bucket are evenly distributed on the upper horizontal section, the second branch comprises a side horizontal section horizontally extending along the lateral upper portion of the conveying belt and an end horizontal section horizontally extending along the upper portion of the tail end of the conveying belt, and second sprayers facing the conveying belt are evenly distributed on the side horizontal section and the end horizontal section. According to the dust suppression device, dust dissipation in the coal unloading process can be effectively suppressed, and the environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of coal unloading equipment, in particular to a dust suppression device for a bridge-type coal unloader. Background Technique

[0002] In coal unloading sites, such as the coal transportation and storage yard of a thermal power plant, a large amount of coal dust drifts every time the coal unloading equipment is used for car unloading and stacking and reclaiming operations, seriously polluting the environment and damaging the physical and mental health of on-site workers.

[0003] In order to solve the problem of operation dust in coal unloading sites, Chinese patent document CN210159385U discloses a dust removal device for a coal unloader, including a coal unloading bin. A cleaning frame is erected on the top of the coal unloading bin. The cleaning frame is erected on the top of the coal unloading bin. A longitudinal slide rail is installed on the side wall of the coal unloading bin. A sliding block is installed on the cleaning frame. The sliding block is installed in the longitudinal slide rail. A longitudinal screw rod is erected on the side of the longitudinal slide rail. A screw hole is provided in the sliding block. The sliding block is sleeved on the longitudinal screw rod through the screw hole. A transverse slide rail is installed on the cleaning frame. Sliding seats are installed in the transverse slide rails. The sliding seats are installed on the transverse slide rails through rollers. An electric telescopic rod is installed at the bottom end of the sliding seat. A cleaning brush is installed at the bottom rod end of the electric telescopic rod. Through the setting of a three-dimensional cleaning mechanism, this patent can sweep away dust scale in cooperation with the direction of water spray, and can achieve the effect of three-dimensional cleaning in cooperation with the spray device.

[0004] Although the above-mentioned patent technical solution can achieve three-dimensional cleaning and dust removal, the dust removal position is relatively limited. In the actual environment, a large amount of dust will be generated at the conveyor belt and the coal hopper. The equipment mentioned in the above technical solution is only used for dust removal operations at one part, and at the same time, the water required for dust removal cannot be freely adjusted, which is easy to cause waste. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust suppression device for a bridge-type coal unloader to solve the problems existing in the prior art.

[0006] The object of the present utility model is achieved as follows: A dust suppression device for a bridge type coal unloader. The bridge type coal unloader includes an upper platform and a lower platform. A coal hopper is installed on the upper platform, and a conveyor belt is provided on the lower platform. The dust suppression device includes a water storage tank and a water spray pipeline. The water storage tank is arranged outside the starting end of the conveyor belt. The water spray pipeline is connected to the water outlet of the water storage tank through a water pump. The water spray pipeline includes a first branch and a second branch. The first branch includes a vertical section and an upper horizontal section connected to the upper end of the vertical section. The upper end of the vertical section passes through the upper platform and extends to the upper edge of the coal hopper. The upper horizontal section extends along the edge of the coal hopper, and first sprayers facing the coal hopper are evenly distributed on the upper horizontal section. The second branch includes a side horizontal section horizontally extending above the side of the conveyor belt and an end horizontal section horizontally extending above the terminal of the conveyor belt. Second sprayers facing the conveyor belt are evenly distributed on the side horizontal section and the end horizontal section. The dust suppression device for the bridge type coal unloader of the present utility model can realize spraying and dust suppression above the coal hopper and the conveyor belt simultaneously through the arranged water spray pipeline, effectively suppressing the dust escape during the coal unloading process and protecting the environment.

[0007] As a further improvement of the present utility model, a water inlet pipe, a water passing pipe, a water flowing pipe and an L-shaped rotating arm are arranged in the water storage tank. The rear end of the water inlet pipe passes through the rear end wall of the water storage tank and is connected to the water inlet system. The water passing pipe is connected to the front end of the water inlet pipe. The water flowing pipe is communicated below the water passing pipe. A rubber valve is installed in the inner cavity of the water passing pipe. A plug matching the size of the water spraying port at the front end of the water passing pipe is arranged at the rear end of the rubber valve. A fixing column is arranged at the front end of the rubber valve. A trigger ball is arranged at one end of the L-shaped rotating arm close to the fixing column, and a floating ball is fixedly connected to the other end, so as to realize the regulation of the water required during the dust suppression process. When the water entering the water storage tank rises, it will drive the floating ball to float, thereby driving the L-shaped rotating arm to rotate. When the water level rises to a certain extent, the trigger ball contacts and presses the rubber valve, so that the rubber ball blocks the water spraying hole inside the water passing pipe, stopping the water injection and achieving the purpose of saving water.

[0008] As a further improvement of the present utility model, a horizontally installed plate is connected to the inner wall of the water storage tank. The water flowing pipe is fixedly arranged through the horizontally installed plate. A downward turning bending part is arranged at the front end of the horizontally installed plate. The L-shaped rotating arm is hinged on a hinge seat located in front of the downward turning bending part, with a simple, compact, stable and reliable structure.

[0009] As a further improvement of the present utility model, a baffle is arranged outside the upper horizontal section. A first end fixing plate is arranged on the baffle. The end of the upper horizontal section is fixedly arranged through the first end fixing plate, improving the structural stability.

[0010] As a further improvement of the present utility model, support vertical plates are symmetrically arranged on both sides of the terminal of the conveyor belt. A second end fixing plate is arranged on the support vertical plate. Both ends of the end horizontal section are fixedly arranged through the second end fixing plate, improving the structural stability.

[0011] As a further improvement of the present utility model, the bottom of the coal hopper passes through the upper platform and is fixed on the lower platform by the legs arranged at the four corners to ensure the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. is a three-dimensional schematic diagram of the dust suppression device of the bridge-type coal unloader of the present utility model from one angle.

[0013] Figure 2 FIG. is a three-dimensional schematic diagram of the dust suppression device of the bridge-type coal unloader of the present utility model from another angle.

[0014] Figure 3 FIG. is a three-dimensional schematic diagram of the dust suppression device of the bridge-type coal unloader of the present utility model from yet another angle (wherein the water storage tank is in a cut-away state).

[0015] Figure 4 is Figure 3 the enlarged schematic diagram at K in FIG. (partial cross-section of the position of the water pipe).

[0016] Wherein, 1 is the upper platform, 2 is the lower platform, 3 is the coal hopper, 4 is the conveyor belt, 5 is the water storage tank, 6 is the water pump, 7 is the first branch, 7A is the upper horizontal section, 8 is the second branch, 8A is the end horizontal section, 9 is the first sprayer, 10 is the baffle, 11 is the first end fixing plate, 12 is the second sprayer, 13 is the support vertical plate, 14 is the second end fixing plate, 15 is the water inlet pipe, 16 is the water pipe, 17 is the water flow pipe, 18 is the L-shaped rotating arm, 18A is the trigger ball, 18B is the floating ball, 19 is the rubber valve, 19A is the fixing column, 20 is the horizontal mounting plate, 21 is the hinge seat, 22 is the leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Figures 1-4 A specific embodiment of the dust suppression device of the bridge-type coal unloader of the present utility model is given. Among them, the bridge-type coal unloader includes an upper platform 1 and a lower platform 2. A coal hopper 3 is installed on the upper platform 1, and a conveyor belt 4 is provided on the lower platform 2. The above is the existing structure of the bridge-type coal unloader, which will not be described in detail here. The improvement of the present utility model mainly lies in the dust suppression device. Before specifically describing it, first explain that the starting end and the terminal end of the conveyor belt 4 are defined according to the driving direction of the conveyor belt, and this definition is only for the convenience of description.

[0018] As Figures 1-4 shown, the dust suppression device includes a water storage tank 5 and a water spray pipeline. The water storage tank 5 is arranged outside the starting end of the conveyor belt 4, and the water spray pipeline is connected to the water outlet of the water storage tank 5 through a water pump 6.

[0019] The water spray pipeline includes a first branch 7 and a second branch 8. The first branch 7 includes a vertical section and an upper horizontal section 7A connected to the upper end of the vertical section. The upper end of the vertical section passes through the upper layer platform 1 and extends to the upper edge of the coal hopper 3. The upper horizontal section 7A extends along the edge of the coal hopper 3, and first sprayers 9 facing the coal hopper 3 are evenly distributed on the upper horizontal section 7A. A baffle 10 is provided outside the upper horizontal section 7A, and a first end fixing plate 11 is provided on the baffle 10. The end of the upper horizontal section 7A is fixedly arranged through the first end fixing plate 11 to improve the structural stability. The second branch 8 includes a side horizontal section horizontally extending above the side of the conveyor belt 4 and an end horizontal section 8A horizontally extending above the terminal of the conveyor belt 4. Second sprayers 12 facing the conveyor belt are evenly distributed on the side horizontal section and the end horizontal section 8A. Support vertical plates 13 are symmetrically arranged on both sides of the terminal of the conveyor belt 4, and a second end fixing plate 14 is provided on the support vertical plates 13. Both ends of the end horizontal section 8A are fixedly arranged through the second end fixing plate 14 to improve the structural stability.

[0020] As Figure 4 Shown in the figure, a water inlet pipe 15, a water connection pipe 16, a water flow pipe 17 and an L-shaped rotating arm 18 are arranged in the water storage tank 5. The rear end of the water inlet pipe 15 passes through the rear end wall of the water storage tank 5 and is connected to the water inlet system. The water connection pipe 16 is connected to the front end of the water inlet pipe 15. The water flow pipe 17 is communicated below the water connection pipe 16. A rubber valve 19 is installed in the inner cavity of the water connection pipe 16. A plug matching the size of the water spraying port at the front end of the water connection pipe 16 is provided at the rear end of the rubber valve 19. A fixing column 19A is provided at the front end of the rubber valve 19. A trigger ball 18A is provided at one end of the L-shaped rotating arm 18 close to the fixing column 19A, and a floating ball 18B is fixedly connected to the other end, so as to realize the regulation of the water required in the dust reduction process. When the water entering the water storage tank 5 rises, it will drive the floating ball 18B to float, thereby driving the L-shaped rotating arm 18 to rotate. When the water level rises to a certain extent, the trigger ball 18A contacts and presses the rubber valve 19, so that the rubber ball blocks the water spraying hole inside the water connection pipe 16, and the pouring of water is stopped, thus achieving the purpose of saving water. A horizontal mounting plate 20 is connected to the inner wall of the water storage tank 5. The water flow pipe 17 is fixedly arranged through the horizontal mounting plate 20. A downward turning bending part is provided at the front end of the horizontal mounting plate 20. The L-shaped rotating arm 18 is hinged to a hinge seat 21 located on the front side of the downward turning bending part. The structure is simple, compact, stable and reliable.

[0021] The bottom of the coal hopper 3 passes through the upper layer platform 1 and is fixed on the lower layer platform 2 by legs 22 arranged at the four corners to ensure the structural stability.

[0022] The dust suppression device of the bridge-type coal unloader in this embodiment can spray and suppress dust above the coal hopper 3 and the conveyor belt 4 simultaneously through the arranged water spray pipeline, effectively suppressing the dust dispersion during the coal unloading process and protecting the environment. The working principle is as follows: First, water enters the through-water pipe 16 through the water inlet pipe 15 and flows into the interior of the water storage tank 5 through the flowing water pipe 17. When the water level rises, the float ball 18B will rise, driving the L-shaped rotating arm 18 to rotate. During the rotation of the L-shaped rotating arm 18, the trigger ball will squeeze the rubber valve 19, driving the plug to block the water spray opening of the through-water pipe 16, thereby controlling the outflow of water. Start the water pump 6. The water pump 6 pumps water from the water storage tank 5 and transports it to the designated position through the water spray pipeline. When the water is transported to the designated position, the water is sprayed in the form of mist through the first sprayer 9 and the second sprayer 12. At this time, the water level inside the water storage tank 5 drops, the float ball 18B drops, and the L-shaped rotating arm 18 rotates in the opposite direction. At this time, the trigger ball releases the pressing on the rubber valve 19, and the water flows out naturally and enters the water storage tank 5 through the flowing water pipe 17.

[0023] In summary, the dust suppression device of the bridge-type coal unloader in this embodiment can effectively solve the problems of relatively limited dust removal positions and the inability to freely adjust the water required for dust removal.

[0024] The present utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the present utility model, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A dust suppression device for a bridge-type coal unloader, the bridge-type coal unloader comprising an upper platform and a lower platform, the upper platform being provided with a coal hopper and the lower platform being provided with a conveyor belt, characterized in that: The dust suppression device includes a water tank and a water spray pipe. The water tank is arranged on the outside of the starting end of the conveyor belt. The water spray pipe is connected to the water outlet of the water tank through a water pump. The water spray pipe includes a first branch and a second branch. The first branch includes a vertical section and an upper horizontal section connected to the upper end of the vertical section. The upper end of the vertical section passes through the upper platform and extends to the upper edge of the coal hopper. The upper horizontal section extends along the edge of the coal hopper. The upper horizontal section is evenly distributed with first sprayers facing the coal hopper. The second branch includes a side horizontal section extending horizontally above the side of the conveyor belt and an end horizontal section extending horizontally above the terminal end of the conveyor belt. The side horizontal section and the end horizontal section are evenly distributed with second sprayers facing the transmission belt.

2. The dust suppression device of the bridge type coal unloader according to claim 1, characterized in that: The water tank is provided with a water inlet pipe, a water flow pipe, a water pipe and an L-shaped rotating arm. The rear end of the water inlet pipe passes through the rear end wall of the water tank and is connected to the water inlet system. The water flow pipe is connected to the front end of the water inlet pipe. The water flow pipe is connected to the bottom of the water flow pipe. A rubber valve is installed in the inner cavity of the water flow pipe. The rear end of the rubber valve is provided with a plug that matches the size of the water outlet at the front end of the water flow pipe. A fixed column is provided at the front end of the rubber valve. A trigger ball is provided at one end of the L-shaped rotating arm close to the fixed column, and a float is fixedly connected to the other end.

3. The dust suppression device of the bridge type coal unloader according to claim 2, characterized in that: A horizontal mounting plate is connected to the inner wall of the water tank, the water pipe is passed through and fixed on the horizontal mounting plate, a downward-folding bend is provided at the front end of the horizontal mounting plate, and the L-shaped rotating arm is hinged on a hinge seat located in front of the downward-folding bend.

4. The dust suppression device of the bridge-type coal unloader according to claim 1, characterized in that: A baffle is provided on the outer side of the upper horizontal section, a first end fixing plate is provided on the baffle, and the end of the upper horizontal section is passed through and fixed on the first end fixing plate.

5. The dust suppression device of the bridge-type coal unloader according to claim 1, characterized in that: The conveyor belt terminal is symmetrically provided with supporting vertical plates on both sides, and the supporting vertical plates are provided with second end fixing plates. The two ends of the end horizontal section are passed through and fixed on the second end fixing plates.

6. The dust suppression device of the bridge-type coal unloader according to any one of claims 1-5, characterized in that: The bottom of the coal hopper passes through the upper platform and is fixed on the lower platform through supporting legs arranged at four corners.

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