Dust collecting system of broken stone conveying device
By arranging dust collecting branch pipes and side branch pipes in the gravel conveying device, dust is collected close to the dropping point, which solves the problem of poor dust collecting effect in the prior art and achieves efficient dust collection and environmental protection.
Patent Information
- Application Number
- CN202520149271.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In the existing dust collection system of the gravel conveying device, the dust collection pipeline design is unreasonable, resulting in poor dust collection effect, difficulty in timely extraction of dust, and easy dust accumulation in the pipeline, affecting the environment and dust collection efficiency.
A dust collection branch pipe and a dust collection side branch pipe are set on the closed belt conveyor, close to the dropping point of the gravel buffer dropping channel. Combined with the induced draft fan and dust collector, an efficient dust collection path is formed to reduce dust diffusion and fallback.
It improves the dust collection efficiency, reduces the diffusion and fall of dust in the conveying channel, reduces the dust during gravel unloading, and improves the environmental quality.
Smart Images
Figure CN223444760U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dust treatment technical field, specifically is a kind of crushed stone conveying device dust collection system. BACKGROUND
[0002] Large stone is crushed into small crushed stone by crusher, and dust is generated in the crushing process of stone, to avoid dust pollution, crushed stone is dropped on belt conveyor after being discharged from crusher through closed buffer drop channel, and two or more buffer drop channels are usually provided, and the belt conveyor sends crushed stone to crushed stone site, to avoid dust flying, the conveying channel of belt conveyor is also closed, and dust collection is carried out on the conveying channel of belt conveyor, and the collected dust gas is sent into dust collector for treatment. The existing crushed stone conveying device dust collection system is generally composed of induced draft fan, dust collector and dust-containing gas collection pipeline, the collection pipeline includes a horizontal main pipe located above the belt conveyor, the horizontal main pipe is connected to the top of the closed conveying channel of the belt conveyor through dust collection branch pipe, and the horizontal main pipe is connected to the dust collector through connecting pipeline. Dust-containing gas in the conveying channel of the belt conveyor enters the dust collector for dust removal treatment after passing through the dust collection branch pipe, the horizontal main pipe and the connecting pipeline, and the purified air after treatment is discharged after being induced by the induced draft fan. The arrangement of the existing dust collection branch pipe is as follows: a dust collection branch pipe is arranged between two adjacent buffer drop channels, the dust collection branch pipe is located at the middle position of the two buffer drop channels, and the dust collection branch pipe is inclined downward and connected to the top of the closed conveying channel of the belt conveyor. The position where crushed stone falls on the conveying belt of the belt conveyor from the buffer drop channel is the main dust generation point, and the dust spreads upward and to both sides after being raised, and part of the dust falls on the crushed stone during the dust spreading process. The existing dust collection pipeline has the following problems: the dust collection point of the dust collection branch pipe is far away from the buffer drop channel, and the dust generated when the crushed stone falls on the conveying belt cannot be removed in time, and it is difficult to remove the dust particles when the dust falls on the crushed stone. When the crushed stone is conveyed to the crushed stone site from the belt conveyor, the dust particles on the crushed stone are raised again, which affects the air environment of the crushed stone site. Dust is easily accumulated in the horizontal main pipe of the dust collection pipeline, and long-term operation will cause the pipeline resistance to increase, affecting the dust collection effect. SUMMARY
[0003] The utility model discloses to solve the problem that the existing crushed stone conveying device dust collection pipeline is designed unreasonably and causes poor dust collection effect, and provides a kind of crushed stone conveying device dust collection system that can improve dust collection effect.
[0004] The utility model discloses a dust catcher, the purification gas export of dust catcher is connected with the air draught fan through pipeline, the dust gas import of dust catcher is communicated with the conveying passageway of the closed belt conveyor for conveying the crushed stone through the dust collection pipeline, the closed belt conveyor is connected with at least two crushed stone buffer blanking passageway, the crushed stone buffer blanking passageway is arranged along the conveying direction of crushed stone, the dust collection pipeline includes the horizontal dust collection main pipe of being located closed belt conveyor top, the horizontal dust collection main pipe is connected with the dust gas import of dust catcher through the connecting pipeline, the horizontal dust collection main pipe is connected with at least one root dust collection branch pipe that is obliquely downward, the dust collection branch pipe is located between the adjacent two crushed stone buffer blanking passageway, and its structural features are: the bottom end of dust collection branch pipe is closed, both sides of the lower part of dust collection branch pipe are connected with a dust collection branch pipe, the dust collection branch pipe is obliquely downward and is connected with the shell top of closed belt conveyor, and the dust collection branch pipe is oblique to the crushed stone buffer blanking passageway, and the connecting position of dust collection branch pipe and shell is close to the blanking point of crushed stone buffer blanking passageway.
[0005] After the above structure is adopted, the air draught fan is opened, the crushed stone falls on the closed belt conveyor through the crushed stone buffer blanking passageway, and then is conveyed to the designated place through the closed belt conveyor, when the crushed stone slides from the crushed stone buffer blanking passageway to the closed belt conveyor, the tiny dust particle can be raised and form dust gas, the dust gas diffuses upwards and to both sides, since the connecting position of dust collection branch pipe and shell of closed belt conveyor is close to the blanking point of crushed stone buffer blanking passageway, the connecting position is also the position of dust gas formation and high dust concentration, under the suction of the air draught fan, the formed dust gas is sucked into the dust collection branch pipe, then is sequentially sucked into the dust collection branch pipe, the horizontal dust collection main pipe, the connecting pipeline and the dust catcher, and the purified air after the dust catcher is sucked and discharged by the air draught fan. Since the dust suction point of dust collection branch pipe is the position of dust gas formation, most of the dust gas after formation is sucked into the dust collection branch pipe, the amount of dust gas diffusion upwards and to both sides is greatly reduced, the dust collection efficiency in the conveying passageway of closed belt conveyor is improved, the amount of dust particle falling on the crushed stone when the dust gas diffuses is reduced, and then the dust raising when the crushed stone is unloaded is reduced.
[0006] The height of the horizontal dust collection main pipe is higher than the dust catcher, the horizontal dust collection main pipe is provided with a slope towards the dust catcher, and the slope is 1-1.5%.
[0007] The outer side of the crushed stone buffer blanking passageway at both ends is provided with a dust collection side branch pipe connected with the horizontal dust collection main pipe, the dust collection side branch pipe is obliquely downward, the bottom of the dust collection side branch pipe is connected with a dust collection side branch pipe, the dust collection side branch pipe is connected to the top of the shell, the dust collection side branch pipe is oblique to the crushed stone buffer blanking passageway, and the connecting position of the dust collection side branch pipe and the shell is close to the blanking point of the crushed stone buffer blanking passageway.
[0008] The horizontal dust collection main pipe is provided with a plurality of butterfly plate valves for controlling dust collection of the dust collection branch pipes and the dust collection side branch pipes.
[0009] The horizontal dust collection main pipe is connected with a blast pipe for blowing and cleaning dust accumulated in the horizontal dust collection main pipe.
[0010] In the dust collection system of the gravel conveying device, the dust collection points of the dust collection branch pipes and the dust collection side branch pipes are close to the discharging points of the gravel buffer discharging channels, and the dust raised during discharging is quickly sucked into the dust collection branch pipes and the dust collection side branch pipes, so that the upward and lateral diffusion of the dust-containing gas is reduced, the dust particles falling on the gravel when the dust-containing gas diffuses laterally are reduced, the dust collection efficiency is improved, and the dust raised when the gravel is discharged from the gravel conveying device is reduced; the upper ends of the dust collection branch pipes are connected with the dust collection branch pipes, the upper ends of the dust collection side branch pipes are connected with the dust collection side branch pipes, the dust collection branch pipes and the dust collection side branch pipes are inclined to the direction of the gravel buffer discharging channels when they extend downward, the resistance at the connection between the dust collection branch pipes and the dust collection branch pipes and the resistance at the connection between the dust collection side branch pipes and the dust collection side branch pipes are small, which is beneficial to the extraction of the dust-containing gas in the conveying channel of the closed belt conveyor; the horizontal dust collection main pipe is provided with a slope towards the dust collector, the blast pipe blows air into the horizontal dust collection main pipe, and dust deposition at the bottom of the horizontal dust collection main pipe is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 FIG. 1 is a schematic view of a dust collection system of a gravel conveying device according to the present application, in which a dust collection branch pipe is arranged between two adjacent gravel buffer discharging channels;
[0012] Figure 2 FIG. 2 is a schematic view of another dust collection system of a gravel conveying device according to the present application, in which dust collection branch pipes are arranged between two adjacent gravel buffer discharging channels and outside the gravel buffer discharging channels at both ends, and a blast pipe of a horizontal dust collection main pipe is also arranged;
[0013] Figure 3 FIG. 3 is an A-A cross-sectional view of the dust collection system of the gravel conveying device according to the present application; Figure 2
[0014] Figure 4 FIG. 4 is a schematic view of the dust collection system of the gravel conveying device according to the present application during operation; Figure 2
[0015] Figure 5 FIG. 5 is a schematic view of a dust collection system of a conventional gravel conveying device;
[0016] In the figure: 1, dust collector; 2, induced draft fan; 3, horizontal dust collection main pipe; 31, butterfly valve; 4, dust collection branch pipe; 41, dust collection sub-branch pipe; 5, air blower; 6, air supply pipe; 61, control valve; 7, dust collection side branch pipe; 71, dust collection side sub-branch pipe; 100, closed belt conveyor; 101, conveying belt; 102, outer shell; 200, crushed stone buffer and discharging passage. DETAILED DESCRIPTION
[0017] Figure 5The dust collecting system of the existing stone conveying device in the prior art comprises a dust remover 1, an induced draft fan 2 arranged at the rear end of the dust remover 1, a purification gas outlet of the dust remover 1 connected with the induced draft fan 2 through a pipeline, a dust-containing gas inlet of the dust remover 1 communicated with a conveying channel of a closed belt conveyor 100 for conveying stones through a dust collecting pipeline, and the dust remover 1 can be a bag-type dust remover or the like. The closed belt conveyor 100 is provided with an outer shell 102 for preventing dust in the conveying channel from spreading to the surrounding environment. The closed belt conveyor 100 is connected with at least two stone buffer discharge channels 200, which are closed to prevent dust from affecting the surrounding environment. As shown in the figure, three stone buffer discharge channels 200 are arranged along the conveying direction of the stones. The stones are slid into the closed belt conveyor 100 through the stone buffer discharge channels 200 and then conveyed to a stone site. The dust collecting pipeline comprises a horizontal dust collecting main pipeline 3 arranged above the closed belt conveyor 100 and having a height higher than the dust remover 1. The dust-containing gas inlet of the dust remover 1 is connected with the horizontal dust collecting main pipeline 3 through a connecting pipeline. The horizontal dust collecting main pipeline 3 is connected with two dust collecting branch pipelines 4 arranged between adjacent two stone buffer discharge channels 200. The dust collecting branch pipelines 4 are inclined downward and connected with the outer shell 102 of the closed belt conveyor 100 at bottom ends. The connection position of the dust collecting branch pipelines 4 with the outer shell 102 is located between adjacent two stone buffer discharge channels 200. The existing system has the following problems: the dust raising points in the conveying channel mainly concentrate on the positions where the stones fall from the stone buffer discharge channels to the closed belt conveyor 100, i.e. the stone discharge points. The dust raised after the stones fall onto the closed belt conveyor 100 spreads upward along the stone buffer discharge channels 200 and spreads to both sides along the conveying channel of the closed belt conveyor 100. During the spreading process of the dust to both sides, part of the dust particles fall back onto the stones. The dust particles falling onto the stones are difficult to be sucked away by the dust collecting branch pipelines 4. Since the connection position of the dust collecting branch pipelines 4 with the outer shell 102 is located between adjacent two stone buffer discharge channels 200, the distance between the dust collecting point and the stone discharge point is large. The dust collecting branch pipelines 4 can only suck away the dust spreading to the vicinity of the dust collecting point. The dust particles falling back onto the stones during the spreading process of the dust cannot be sucked away, and the dust collecting efficiency is low. When the stones are discharged to the stone site, the dust falling onto the stones is raised again, which affects the environment of the stone site. After the system runs for a period of time, dust accumulation will be formed in the horizontal dust collecting main pipeline 3. If the dust accumulation is not removed after long-term operation, the pipeline resistance will be increased, and the dust suction effect will be affected.
[0018] Figures 1-4The utility model discloses a gravel conveying device dust collecting system, including dust remover 1 and the rear fan 2 of leading, the purification gas export of dust remover 1 is connected with the rear fan 2 through pipeline, and the dust gas import of dust remover 1 is communicated with the conveying passageway of closed belt conveyor 100 through dust collecting pipeline, and the gravel is conveyed to the gravel site through closed belt conveyor 100, and the utility model discloses setting dust gas from front to back flow, and the gravel is conveyed from front to back in closed belt conveyor 100, and the closed belt conveyor 100 can reduce the influence of dust on surrounding environment in the conveying process of gravel, and the closed belt conveyor 100 includes conveyer belt 101, and the outside of conveyer belt 101 is equipped with shell 102, and shell 102 surrounds conveyer belt 101 and forms the closed conveying passageway, and the structure and principle of conveyer belt 101 are prior art, and do not describe in detail here, and the closed belt conveyor 100 is connected with at least two gravel buffer discharge passageway 200, in order to avoid the influence of dust on surrounding environment, and the gravel buffer discharge passageway 200 is closed, and the bottom of gravel buffer discharge passageway 200 is connected with the top of shell 102, and the gravel buffer discharge passageway 200 is inclined, can slow down the falling speed of gravel, prevents the gravel from falling directly on conveyer belt 101, reduces the impact force produced when the gravel falls on conveyer belt 101, and three gravel buffer discharge passageways 200 are arranged in the drawing, and the gravel buffer discharge passageway 200 is arranged along the conveying direction of gravel, and the dust collecting pipeline includes horizontal dust collecting main pipe 3, and the horizontal dust collecting main pipe 3 is connected with the dust gas import of dust remover 1 through connecting pipeline, and the horizontal dust collecting main pipe 3 is located above the closed belt conveyor 100, and the horizontal dust collecting main pipe 3 is connected with at least one dust collecting branch pipe 4, and the dust collecting branch pipe 4 is located between the two adjacent gravel buffer discharge passageways 200, and two dust collecting branch pipes 4 are arranged in the drawing, and the dust collecting branch pipe 4 extends obliquely downward, and the bottom of dust collecting branch pipe 4 is closed, and the lower part of dust collecting branch pipe 4 is connected with a dust collecting branch pipe 41 on both sides, and the dust collecting branch pipe 41 extends obliquely downward to the direction of gravel buffer discharge passageway 200, and the dust collecting branch pipe 41 is connected to the top of shell 102, and the connection position of dust collecting branch pipe 41 and the shell 102 of closed belt conveyor 100 is close to the discharge point of gravel buffer discharge passageway 200.
[0019] Referring to Figures 1-4, a dust collecting side branch pipe 7 is provided on the outside of the gravel buffer dropping channel 200 at both ends, and the upper end of the dust collecting side branch pipe 7 is connected to the horizontal dust collecting main pipe 3. The outside mentioned here means not located between the gravel buffer dropping channel 200. The bottom of the dust collecting side branch pipe 7 is connected to a dust collecting side branch pipe 71, and the dust collecting side branch pipe 71 extends downwardly and obliquely toward the gravel buffer dropping channel 200. The dust collecting side branch pipe 71 is connected to the top of the shell 102. The connection position of the dust collecting side branch pipe 71 and the shell 102 of the closed belt conveyor 100 is close to the dropping point of the gravel buffer dropping channel 200. The dust collecting side branch pipe 71 can collect the dust generated by the dust-containing gas at the dropping point of the gravel buffer dropping channel 200 at both ends and diffused to the outside, thereby improving the dust collection effect of the conveying channel of the closed belt conveyor 100. The diameter of the horizontal dust collecting main pipe 3 increases with the increase of the air flow in the pipe, such as Figure 1 、 2 As shown in Figures 4 and 5, along the flow direction of air in the pipe, the diameter of the horizontal dust collecting main pipe 3 increases as the number of connected dust collecting branch pipes 4 increases. The change in diameter can make the wind speed and resistance of each section of the horizontal dust collecting main pipe 3 equivalent, thereby preventing the wind speed and resistance of the local section from being too large or too small, thereby affecting the suction force of the dust collecting branch pipe 4 and thus affecting the dust collection effect; a plurality of butterfly valves 31 are provided on the horizontal dust collecting main pipe 3, and the butterfly valve 31 is arranged near the diameter-changing part of the horizontal dust collecting main pipe 3. The dust collecting branch pipe 4 and the dust collecting side branch pipe 7 are controlled by the butterfly valve 31. When the butterfly valve 31 is opened, the dust collecting branch pipe 4 and the dust collecting side branch pipe 7 in front of the butterfly valve 31 can collect dust. When the butterfly valve 31 is closed, the dust collecting branch pipe 4 and the dust collecting side branch pipe 7 in front of the butterfly valve 31 cannot collect dust.
[0020] Reference Figures 1-4 The height of the horizontal dust collecting main pipe 3 is higher than the dust collector 1. The horizontal dust collecting main pipe 3 is provided with a slope toward the dust collector 1, and the slope is 1-1.5%. The horizontal dust collecting main pipe 3 is provided with a certain slope, which is conducive to the backward flow of dust particles and reduces the dust accumulation at the bottom of the horizontal dust collecting main pipe 3; the horizontal dust collecting main pipe 3 is connected to the air supply pipe 6 for supplying air to the horizontal dust collecting main pipe 3. The airflow entering the horizontal dust collecting main pipe 3 from the air supply pipe 6 blows away the dust accumulated in the horizontal dust collecting main pipe 3 to prevent dust particles from being deposited in the pipe. Figure 2 、 4 As shown, the horizontal dust collecting main pipe 3 and the air supply pipe 6 are connected through multiple air supply branches. The different diameter sections of the horizontal dust collecting main pipe 3 are all connected to the air supply branches. A control valve 61 is provided on the air supply branch. The control valve 61 can be a manual or electric valve, such as a butterfly valve. The air supply pipe 6 is connected to the air outlet of the blower 5.
[0021] It should be noted that the enclosed belt conveyor 100 and the gravel buffer drop channel 200 are existing equipment and do not fall within the scope of the present utility model.
[0022] Working process: open the induced draft fan 2, open the butterfly valve 31 on the horizontal dust collection main pipe 3, close the blower 5, control valve 61, after crushing by the crusher (such as jaw crusher, the crusher does not belong to the range of the utility model, not shown in the figure), the crushed stone obtained after crushing falls to the conveying belt 101 of the closed belt conveyor 100 through the crushed stone buffer feeding channel 200, and the feeding point is the main position of dust generation, when the crushed stone falls on the conveying belt 101, the dust concentration is the highest, the dust-containing gas diffuses upwards along the crushed stone buffer feeding channel 200, and diffuses to both sides along the conveying channel of the closed belt conveyor 100, the connection points of the dust collection branch pipe 41 and the dust collection side branch pipe 71 and the shell 102 are close to the feeding point of the crushed stone buffer feeding channel 200, which is also the position with the highest dust concentration, and the dust collection branch pipe 41 and the dust collection side branch pipe 71 are inclined downward after being separated from the dust collection branch pipe 4 and the dust collection side branch pipe 7, the gas in the pipe flows upwards, the airflow resistance of the connection between the branch pipe and the branch pipe is small, most of the dust raised is sucked into the dust collection branch pipe 41 and the dust collection side branch pipe 71, then enters the dust collector 1 for purification treatment through the dust branch pipe 4, the dust side branch pipe 7, the horizontal dust collection main pipe 3 and the connecting pipeline, the purified air is extracted and discharged by the induced draft fan 2, the dust collection efficiency is improved, the amount of dust diffusing upwards and to both sides is greatly reduced, the dust particles falling back to the crushed stone when diffusing to both sides are reduced, and then the influence of the dust raised when the crushed stone is unloaded on the surrounding environment is reduced. The horizontal dust collection main pipe 3 is provided with a slope towards the dust collector 1, which is beneficial to the flow of dust to the dust collector 1, the blower 5 and the control valve 61 are intermittently opened, and the dust at the bottom of the horizontal dust collection main pipe 3 is swept out, so that the dust is prevented from being accumulated.
[0023] The crushed stone conveying device dust collection system of the utility model, including dust collector, induced draft fan and dust collection pipeline, the connection between the dust collection branch pipe and the dust collection side branch pipe and the closed belt conveyor is the dust collection point, the dust collection point is close to the feeding point of the crushed stone buffer feeding channel, the dust concentration of the dust collection point is high, the diffusion of dust in the crushed stone conveying channel and the amount of dust particles falling back to the crushed stone are reduced, the dust collection efficiency and the dust removal effect are improved; the horizontal dust collection main pipe is provided with a slope, and air is blown into the horizontal dust collection main pipe through the air supply pipe, so that the dust accumulation in the horizontal dust collection main pipe is prevented.
Claims
1. A dust collection system for a crushed stone conveying device, comprising a dust collector (1), wherein a purified gas outlet of the dust collector (1) is connected to an induced draft fan (2) through a pipeline, and a dust-laden gas inlet of the dust collector (1) is connected to a conveying channel of a closed belt conveyor (100) for conveying crushed stone through a dust collecting pipeline, wherein the closed belt conveyor (100) is connected to at least two crushed stone buffering drop channels (200), and the crushed stone buffering drop channels (200) are arranged along the conveying direction of the crushed stone, and the dust collecting pipeline comprises a horizontal dust collecting main pipe (3) located above the closed belt conveyor (100), wherein the horizontal dust collecting main pipe (3) is connected to the dust-laden gas inlet of the dust collector (1) through a connecting pipe, and wherein the horizontal dust collecting main pipe (3) is connected to at least one dust collecting branch pipe (4) inclined downward, and wherein the dust collecting branch pipe (4) is located between two adjacent crushed stone buffering drop channels (200). The dust collecting system is characterized in that: The bottom end of the dust collecting branch pipe (4) is closed, and both sides of the lower part of the dust collecting branch pipe (4) are connected to a dust collecting branch pipe (41). The dust collecting branch pipe (41) is tilted downward and connected to the top of the shell (102) of the closed belt conveyor (100), and the dust collecting branch pipe (41) is tilted toward the gravel buffer drop channel (200). The connection position of the dust collecting branch pipe (41) and the shell (102) of the closed belt conveyor (100) is close to the drop point of the gravel buffer drop channel (200).
2. The dust collection system for a crushed stone conveying device according to claim 1, characterized in that: The height of the horizontal dust collecting main pipe (3) is higher than the dust collector (1), and the horizontal dust collecting main pipe (3) is provided with a slope toward the dust collector (1), and the slope is 1-1.5%.
3. The dust collection system for a crushed stone conveying device according to claim 1, characterized in that: The outer sides of the gravel buffering drop channel (200) at both ends are each provided with a dust collecting side branch pipe (7) connected to the horizontal dust collecting main pipe (3), the dust collecting side branch pipe (7) is inclined downward, the bottom of the dust collecting side branch pipe (7) is connected to a dust collecting side branch pipe (71), the dust collecting side branch pipe (71) is connected to the top of the shell (102), the dust collecting side branch pipe (71) is inclined toward the gravel buffering drop channel (200), and the connection position of the dust collecting side branch pipe (71) and the shell (102) is close to the drop point of the gravel buffering drop channel (200).
4. The dust collection system for a crushed stone conveying device according to claim 3, characterized in that: The horizontal dust collecting main pipe (3) is provided with a plurality of butterfly valves (31) for controlling dust collection in the dust collecting branch pipe (4) and the dust collecting side branch pipe (7).
5. The dust collection system for a crushed stone conveying device according to claim 1, characterized in that: The horizontal dust collecting main pipe (3) is connected to an air supply pipe (6) for supplying air into the horizontal dust collecting main pipe (3) and for blowing away dust accumulated in the horizontal dust collecting main pipe (3).