Movable dust removal discharge hopper
By adopting a combined design of external bucket, internal bucket and dust shielding device in the mobile dust removal and unloading hopper, and using negative pressure and filtering devices, the problem of dust being difficult to effectively absorb in the prior art is solved, and efficient dust collection and Air purification ensures a green and environmentally friendly unloading process.
Patent Information
- Application Number
- CN202420324354.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-21
AI Technical Summary
The existing mobile dust removal device is difficult to effectively absorb dust in the hopper during the grain discharge process, resulting in excessive dust emissions and affecting air quality.
A mobile dust removal and unloading hopper is designed, adopting an external bucket and an internal bucket structure. A negative pressure device and a filter device are installed on the external bucket. The internal bucket is equipped with a dust shielding device. The negative pressure forms an airflow to drive the dust into the external bucket and pass through The filtering device is filtered, and the inclined side walls and dust shielding grooves of the outer bucket are designed to improve dust collection efficiency, and further improve dust removal effect using fans and bag dust collectors.
It effectively reduces dust emissions during unloading, improves dust removal efficiency, ensures improvement in air quality, and avoids the problem of reducing the total grain weight.
Smart Images
Figure CN222225444U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of dust removal hoppers, and in particular to a mobile dust removal unloading hopper. Background Art
[0002] In the grain transportation industry, when grain is transported to the destination by cargo ship or train, it is usually unloaded by a crane-driven claw in conjunction with a hopper. During the unloading process, grain directly enters the hopper from a high place, and the grain collides with the inner wall of the hopper, raising a large amount of dust. This dust will seriously affect the air quality when it enters the air. Therefore, a dust removal device is required to remove dust during the unloading process.
[0003] The dust removal device in the prior art is usually a mobile vacuum cleaner, and the suction port of the mobile vacuum cleaner is placed in the hopper to suck away the dust. In order to improve the dust removal effect, the power of the vacuum cleaner is usually increased, but excessive suction can easily suck away grain particles, resulting in a reduction in the total weight of the grain. Since the power of the vacuum cleaner in the hopper is limited, it is difficult for the vacuum cleaner to suck away all the dust in the open hopper, resulting in a large amount of dust emission, so there is room for improvement. Utility Model Content
[0004] In order to reduce dust emission during the unloading process, the present application provides a mobile dust removal unloading hopper.
[0005] The mobile dust removal and unloading hopper provided in this application adopts the following technical solution:
[0006] A mobile dust removal and unloading hopper includes a working frame, wherein an outer hopper is arranged on the working frame, the top end of the outer hopper is installed on the working frame, and the bottom end of the outer hopper is suspended in the air; an inner hopper is installed in the outer hopper, the inner hopper is installed at the top end of the outer hopper, and the bottom end of the inner hopper is suspended in the air; a dust removal air duct is formed between the outer hopper and the inner hopper, a negative pressure device is installed on the outer hopper, and the air suction port of the negative pressure device is arranged in the dust removal air duct; a filtering device is installed at the air suction port of the negative pressure device; and a dust shielding device is installed in the inner hopper.
[0007] By adopting the above technical solution, the operator pushes the work frame to move the work frame to the position where the goods need to be unloaded, and the bottom end of the outer bucket is aligned with the conveyor belt. The negative pressure device is started, and the negative pressure device forces the air in the dust removal duct to pass through the filter device and enter the air suction port of the negative pressure device and then be discharged to the outside of the outer bucket. The negative pressure formed in the dust removal duct forces the air in the inner bucket to pass through the dust shielding device into the outer bucket and then into the dust removal duct. The operator controls the claws to clamp the grain and then transfer it to the top of the inner bucket, and put the grain into the inner bucket; the grain passes through the dust shielding device and enters the outer bucket. The dust raised by the collision between the grain and the dust shielding device is driven by the airflow formed by the negative pressure device to pass through the dust shielding device and enter the outer bucket, while the dust in the outer bucket is difficult to pass through the dust shielding device into the inner bucket, causing the dust to escape into the air in the opposite direction. The dust entering the outer hopper and the dust raised by the collision of grain with the inner wall of the outer hopper are driven into the dust removal duct by the airflow formed by the negative pressure device. The airflow drives the dust through the filter device, which leaves the dust at the air inlet of the filter device. The dust then slides down along the inner wall of the outer hopper and flows out from the outlet of the outer hopper along with the grain. The clean air passes through the filter device and enters the negative pressure device, which is discharged into the outside air. This reduces dust emission during unloading and is environmentally friendly.
[0008] Optionally, the angle between the inclined side wall of the outer bucket and the horizontal direction is 50 degrees, and the inclined side wall of the inner bucket is parallel to the inclined side wall of the outer bucket.
[0009] By adopting the above technical solution, the 50-degree angle of the inclined side wall of the outer bucket can quickly guide the grain to leave the outer bucket under the action of gravity compared to the obtuse angle, and also reduce the possibility of grain impacting the inner wall of the outer bucket with a gentle slope, causing the grain to be dispersed and raise a large amount of dust. The airflow at the edge of the inner bucket moves along the inclined inner wall of the inner bucket away from the dust shielding device, and the airflow at the center of the inner bucket moves vertically downward. The negative pressure device controls the airflow to rotate in the direction close to the negative pressure device, and moves along the inclined outer wall of the inner bucket and the inclined inner wall of the outer bucket in the direction close to the negative pressure device. The airflow at the edge and the center forms a swirling airflow between the inner bucket and the outer bucket, and the swirling airflow drives all the dust into the dust removal air duct. Improve the efficiency of guiding dust.
[0010] Optionally, the dust shielding device includes a dust shielding plate, the peripheral wall of the dust shielding plate is connected to the inner wall of the inner bucket; a plurality of dust shielding grooves are opened on the dust shielding plate, and the dust shielding grooves pass through the top wall and the bottom wall of the dust shielding plate; the inner walls of the dust shielding grooves are inclined, and the inner walls of the dust shielding grooves are inclined downward and inward.
[0011] Optionally, the side length of the dust shielding groove near the center of the dust shielding plate is greater than the side length of the dust shielding groove near the edge of the dust shielding plate.
[0012] By adopting the above technical solution, when the material claw releases the grain, the grain is piled up in the center of the dust shielding plate. The dust shielding groove in the center of the dust shielding plate is covered by the grain and difficult to ventilate, but the dust shielding groove at the edge of the dust shielding plate is exposed, and the airflow can enter the outer bucket from the dust shielding groove at the edge of the dust shielding plate, and the dust raised by the collision of the grain and the dust shielding plate is sucked away, thereby reducing the amount of dust entering the air. The side length of the dust shielding groove near the center of the grain pile is greater than the side length of the dust shielding groove at the edge. The rate at which the grain at the center and the edge of the grain pile passes through the dust shielding plate through the dust shielding groove is uniform, and the dust shielding plate allows the grain pile to enter the outer bucket in a dispersed manner. During the dispersed falling process, the airflow generated by the negative pressure device will draw the raised dust into the dust removal air duct. Since the side length of the bottom of the dust shielding groove is smaller than the side length of the top, the dust raised in the outer bucket is difficult to enter the inner bucket through the dust shielding groove.
[0013] Optionally, the negative pressure device includes a plurality of fans, wherein the fans are installed in a dust removal air duct, the air suction ports of the fans are connected to a filtering device, and the air outlets of the fans are connected to the outside air.
[0014] Optionally, the filtering device includes a bag dust collector, a solenoid valve and an air compressor, the bag dust collector is installed in the dust removal air duct, one side of the bag dust collector is connected to the outer bucket, and the other side is connected to the inner bucket; the air suction port of the fan is connected to the air outlet of the bag dust collector; the solenoid valve is installed on the outer bucket, the solenoid valve is connected to the bag dust collector, and the air compressor is installed at one end of the solenoid valve away from the bag dust collector, and the solenoid valve controls the output of the air compressor.
[0015] By adopting the above technical solution, before unloading, all fans are turned on first, and the fans suck the air in the dust removal duct into the fans through the bag dust collector, and then discharge it out of the outer bucket; at this time, the solenoid valve is closed. When the hopper is unloading, the airflow generated by the fan drives the dust raised in the inner and outer buckets to the air suction port of the bag dust collector. A part of the coarse and dense dust particles in the airflow settle in the outer bucket under the action of gravity; the fine and low-density dust is deposited on the surface of the filter bag. When the bag dust collector works for a specified time and needs to clean the dust on the surface of the filter bag, the controller controls the solenoid valve to open so that the compressed air in the air compressor ejects the induced airflow through the solenoid valve, and forms an induced airflow into the filter bag of the bag dust collector. The filter bag has an instantaneous positive pressure and expands rapidly, causing the dust deposited on the outside of the filter bag to fall off, and leave the outer bucket along the inner wall of the outer bucket under the action of gravity. Reduce the occurrence of a large amount of dust adhering to the bag dust collector, resulting in a reduction in the total weight of grain.
[0016] Optionally, a plurality of air holes are provided on the side wall of the inner bucket, and the air holes are arranged higher than the dust shielding device; a baffle is provided on the outer wall of the inner bucket, and the baffle is slidably cooperated with the inner bucket, and the baffle can cover the end of the air hole close to the outer bucket; a movable frame is installed on the inner bucket, and the movable frame is movably arranged at the top of the inner bucket, and an elastic member is provided between the movable frame and the inner bucket; the top wall of the movable frame can be abutted against the material claws used for moving materials; the movable frame is connected to the baffle, and the movable frame drives the baffle to reciprocate in the vertical direction.
[0017] Optionally, the baffle plate away from the bottom end of the movable frame can protrude from the vertical side wall of the inner bucket and block part of the dust removal air duct.
[0018] By adopting the above technical solution, when unloading, the material claw moves to the top of the inner bucket and descends. During the descent of the material claw, the bottom of the material claw contacts the top wall of the movable frame and drives the movable frame to move downward. The movable frame moves downward and drives the baffle to move downward through the rod until the baffle exposes the air hole, and the bottom of the baffle blocks part of the dust removal air duct. The negative pressure generated by the fan draws air from the air hole into the dust removal air duct. The airflow draws the dust raised by the collision of the grain and the dust shielding plate into the dust removal air duct through the air hole and is filtered by the bag dust collector. The bottom end of the baffle blocks the upper half of the dust removal air duct, and the cross-sectional area of the dust removal air duct is reduced, so as to avoid the reduction of the air flow pressure in the outer bucket due to the opening of the air hole, which affects the collection effect of the dust in the outer bucket.
[0019] In summary, the present application includes at least one of the following beneficial technical effects:
[0020] 1. The operator pushes the work frame to move it to the position where unloading is required, and the bottom end of the outer bucket is aligned with the conveyor belt. The negative pressure device is started, and the negative pressure device forces the air in the dust removal duct to pass through the filter device and enter the air suction port of the negative pressure device and then be discharged to the outside of the outer bucket. The negative pressure formed in the dust removal duct forces the air in the inner bucket to pass through the dust shielding device into the outer bucket and then into the dust removal duct. The operator controls the claws to grab the grain and transfer it to the top of the inner bucket, and put the grain into the inner bucket; the grain passes through the dust shielding device and enters the outer bucket. The dust raised by the collision of the grain and the dust shielding device is driven by the airflow formed by the negative pressure device to pass through the dust shielding device and enter the outer bucket, while the dust in the outer bucket is difficult to pass through the dust shielding device into the inner bucket, causing the dust to escape into the air in the opposite direction. The dust entering the outer hopper and the dust raised by the collision of grain with the inner wall of the outer hopper are driven into the dust removal duct by the airflow formed by the negative pressure device. The airflow drives the dust through the filter device, which leaves the dust at the air intake of the filter device. The dust then slides down along the inner wall of the outer hopper and flows out from the outlet of the outer hopper along with the grain. The clean air passes through the filter device and enters the negative pressure device, which is discharged into the outside air. This reduces dust emissions during unloading, which is green and environmentally friendly.
[0021] 2. Compared with an obtuse angle, the 50-degree angle of the outer bucket side wall can quickly guide the grain to leave the outer bucket under the action of gravity, and also reduce the possibility of grain impacting the gently sloping inner wall of the outer bucket, causing the grain to be dispersed and raise a large amount of dust. The airflow at the edge of the inner bucket moves along the inclined inner wall of the inner bucket away from the dust shielding device, and the airflow at the center of the inner bucket moves vertically downward. The negative pressure device controls the airflow to rotate in the direction close to the negative pressure device, and moves along the inclined outer wall of the inner bucket and the inclined inner wall of the outer bucket towards the negative pressure device. The airflow at the edge and the center forms a swirling airflow between the inner bucket and the outer bucket, and the swirling airflow drives all the dust into the dust removal air duct. Improve the efficiency of guiding dust;
[0022] 3. When unloading, the claw moves to the top of the inner bucket and descends. During the descent of the claw, the bottom of the claw contacts the top wall of the movable frame and drives the movable frame to move downward. The movable frame moves downward and drives the baffle to move downward through the rod until the baffle exposes the air hole, and the bottom of the baffle blocks part of the dust removal air duct. The negative pressure generated by the fan draws air into the dust removal air duct from the air hole. The airflow draws the dust raised by the collision of the grain and the dust shielding plate into the dust removal air duct through the air hole and is filtered by the bag dust collector. The bottom end of the baffle blocks the upper part of the dust removal air duct, and the cross-sectional area of the dust removal air duct is reduced, so as to avoid the reduction of the air flow pressure in the outer bucket due to the opening of the air hole, which affects the collection effect of the dust in the outer bucket. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of the mobile dust removal and unloading hopper of Example 1 of the present application.
[0024] Figure 2 It is a cross-sectional view of the mobile dust removal and discharge hopper of Example 1 of the present application.
[0025] Figure 3 It is a schematic diagram of the structure of the mobile dust removal and unloading hopper of Example 2 of the present application.
[0026] Figure 4 It is a cross-sectional view of the mobile dust removal and discharge hopper of Example 2 of the present application.
[0027] Explanation of the reference numerals in the accompanying drawings: 1. working frame; 11. wheels; 2. outer bucket; 3. inner bucket; 31. air hole; 32. baffle; 33. movable frame; 34. elastic member; 4. negative pressure device; 41. fan; 5. filtering device; 51. bag dust collector; 52. solenoid valve; 53. air compressor; 6. dust shielding device; 61. dust shielding plate; 62. dust shielding groove; 7. dust removal air duct; 8. conveyor belt. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1-4 This application is described in further detail.
[0029] The embodiment of the present application discloses a mobile dust removal discharge hopper.
[0030] Example 1
[0031] Reference Figure 1 and Figure 2 The mobile dust removal unloading hopper includes a working frame 1, and a wheel 11 is arranged at the bottom end of the working frame 1, and the wheel 11 is rotatably connected to the bottom end of the working frame 1, so that the working frame 1 can move on the ground. An outer bucket 2 is arranged at the top of the working frame 1, and the vertical outer wall of the top end of the outer bucket 2 is connected to the inner wall of the top end of the working frame 1 by welding, and the top wall of the outer bucket 2 protrudes from the top wall of the working frame 1. The bottom end of the outer bucket 2 is suspended, and the bottom end of the outer bucket 2 can be aligned with the conveyor belt 8 for transporting the unloaded grain. An inner bucket 3 is arranged in the outer bucket 2, and the axis of the inner bucket 3 coincides with the axis of the outer bucket 2. The side length and height of the inner bucket 3 are both smaller than the outer bucket 2, and the inner bucket 3 is installed at the top end of the outer bucket 2 through a rod, and the top wall of the inner bucket 3 is higher than the top wall of the outer bucket 2. The bottom end of the inner bucket 3 is suspended, and a dust removal air duct 7 is formed between the inner wall of the outer bucket 2 and the outer wall of the inner bucket 3. A negative pressure device 4 is installed on the outer bucket 2, and the air suction port of the negative pressure device 4 passes through the outer bucket 2 and is arranged in the dust removal air duct 7. A filter device 5 is installed at the air suction port of the negative pressure device 4, and the filter device 5 can filter dust in the air. A dust shielding device 6 is installed in the inner bucket 3, and the grain passes through the dust shielding device 6 to enter the outer bucket 2, and the dust in the outer bucket 2 is difficult to return to the inner bucket 3 through the dust shielding device 6.
[0032] The operator pushes the work frame 1 to move the work frame 1 to the position where the goods need to be unloaded, and the bottom end of the outer bucket 2 is aligned with the conveyor belt 8. The negative pressure device 4 is started, and the negative pressure device 4 forces the air in the dust removal duct 7 to pass through the filter device 5 and enter the air suction port of the negative pressure device 4 and then be discharged to the outside of the outer bucket 2. The negative pressure formed in the dust removal duct 7 forces the air in the inner bucket 3 to pass through the dust shielding device 6 and enter the outer bucket 2 and then enter the dust removal duct 7. The operator controls the material claw to grasp the grain and then transfer it to the top of the inner bucket 3, and put the grain into the inner bucket 3; the grain passes through the dust shielding device 6 and enters the outer bucket 2. The dust raised by the collision between the grain and the dust shielding device 6 is driven by the airflow formed by the negative pressure device 4 to pass through the dust shielding device 6 and enter the outer bucket 2, while the dust in the outer bucket 2 is difficult to pass through the dust shielding device 6 and enter the inner bucket 3 and then escape into the air in the reverse direction. The dust entering the outer bucket 2 and the dust raised by the collision of the grain with the inner wall of the outer bucket 2 are driven by the airflow formed by the negative pressure device 4 into the dust removal duct 7. The airflow drives the dust to pass through the filter device 5, which blocks the dust outside the filter device 5, and then slides down along the inclined inner wall of the outer bucket 2 and flows out from the discharge port of the outer bucket 2 together with the grain; the clean air passes through the filter device 5 and enters the negative pressure device 4, and is discharged to the outside air by the negative pressure device 4. It reduces dust emission during unloading and is green and environmentally friendly.
[0033] Reference Figure 1 and Figure 2 , the angle between the inclined side wall of the outer bucket 2 and the horizontal direction is 50 degrees, and the inclined side wall of the inner bucket 3 is parallel to the inclined side wall of the outer bucket 2. Compared with an obtuse angle, the angle of 50 degrees can quickly guide the grain to leave the outer bucket 2 under the action of gravity, and also reduce the possibility of grain impacting the inner wall of the outer bucket 2 with a gentle slope, causing the grain to be scattered and raise a large amount of dust. The airflow at the edge of the inner bucket 3 moves along the inclined inner wall of the inner bucket 3 away from the dust shielding device 6. When this airflow protrudes from the bottom end of the side wall of the inner bucket 3, the negative pressure device 4 controls this airflow to turn in the direction close to the negative pressure device 4, and moves along the inclined outer wall of the inner bucket 3 to the direction close to the negative pressure device 4. The airflow at the center of the inner bucket 3 moves vertically downward. When this airflow protrudes from the bottom end of the side wall of the inner bucket 3, the negative pressure device 4 controls this airflow to turn in the direction close to the negative pressure device 4, and moves along the inclined inner wall of the outer bucket 2 to the direction close to the negative pressure device 4. The airflow at the edge and the center forms a swirling airflow between the inner bucket 3 and the outer bucket 2, and the swirling airflow drives all the dust into the dust removal air duct 7, thereby improving the efficiency and effect of guiding dust.
[0034] Reference Figure 2 The dust shielding device 6 includes a dust shielding plate 61, and the peripheral wall of the dust shielding plate 61 is connected to the inner wall of the inner bucket 3 by bolts. A plurality of dust shielding grooves 62 are provided on the dust shielding plate 61, and the dust shielding grooves 62 penetrate the top wall and the bottom wall of the dust shielding plate 61. The inner wall of the dust shielding groove 62 is inclined, and the inner wall of the dust shielding groove 62 is inclined downward and inward. The side length of the dust shielding groove 62 near the center of the dust shielding plate 61 is greater than the side length of the dust shielding groove 62 near the edge of the dust shielding plate 61.
[0035] When the material claw releases the grain, the grain is piled up at the center of the dust shielding plate 61. The dust shielding groove 62 at the center of the dust shielding plate 61 is covered by the grain and difficult to ventilate, but the dust shielding groove 62 at the edge of the dust shielding plate 61 is exposed, and the airflow can enter the outer bucket 2 from the dust shielding groove 62 at the edge of the dust shielding plate 61, sucking away the dust raised by the collision between the grain and the dust shielding plate 61, reducing the amount of dust entering the air. The side length of the dust shielding groove 62 near the center of the grain pile is greater than the side length of the dust shielding groove 62 at the edge. The grain at the center and the edge of the grain pile passes through the dust shielding plate 61 at a uniform rate through the dust shielding groove 62, and the dust shielding plate 61 allows the grain pile to enter the outer bucket 2 in a dispersed manner. During the dispersed falling process, the airflow generated by the negative pressure device 4 rolls the raised dust into the dust removal air duct 7. Since the side length of the bottom of the dust shielding groove 62 is smaller than the side length of the top, the dust raised in the outer bucket 2 is difficult to enter the inner bucket 3 through the dust shielding groove 62.
[0036] Reference Figure 2, the negative pressure device 4 includes a plurality of fans 41. In this embodiment, four fans 41 are arranged according to the amount of dust, and the four fans 41 are respectively located at the four corners of the outer bucket 2. The outer shell of the fan 41 is connected to the side wall of the outer bucket 2 by bolts. The air suction ports of the four fans 41 are respectively connected to the filter device 5, and the air outlet of the fan 41 is connected to the outside air. The filter device 5 includes a bag dust collector 51. In this embodiment, four bag dust collectors 51 are arranged. The four bag dust collectors 51 are respectively arranged on the four sides of the outer bucket 2, and the dust removal range of the four bag dust collectors 51 covers the cross section of the entire dust removal air duct 7. The bag dust collector 51 is installed in the dust removal air duct 7, and one side of the outer shell of the bag dust collector 51 is connected to the outer bucket 2, and the other side is connected to the inner bucket 3. The air suction port of the fan 41 is connected to the air outlet of the bag dust collector 51, and the air suction port of the bag dust collector 51 is arranged toward the bottom end of the dust removal air duct 7.
[0037] Several filter bags of the bag filter 51 form a group, and each group of filter bags is connected to a solenoid valve 52. In this embodiment, a total of four solenoid valves 52 are provided, and the shell of the solenoid valve 52 is installed on the outer wall of the outer bucket 2 by bolts; the solenoid valve 52 is connected to the air outlet of the bag filter 51. An air compressor 53 is installed at one end of the solenoid valve 52 away from the bag filter 51, and the solenoid valve 52 controls the output of the air compressor 53. The four solenoid valves 52 are all controlled by a controller, and the controller controls the solenoid valve 52 to open once every specified time.
[0038] Before unloading, all fans 41 are turned on first, and the fans 41 suck the air in the dust removal air duct 7 into the fans 41 through the bag dust collector 51, and then discharge it out of the outer bucket 2; at this time, the solenoid valve 52 is closed. When the hopper is unloading, the airflow generated by the fans 41 drives the dust raised in the inner bucket 3 and the outer bucket 2 to the air intake of the bag dust collector 51. Due to the sudden increase in the cross-sectional area of the airflow, the flow rate is reduced, and a part of the coarse and dense dust particles in the airflow settle in the outer bucket 2 under the action of gravity; after the fine and low-density dust particles enter the bag dust collector 51, the dust is deposited on the surface of the filter bag through the combined effect of inertial collision and screening on the surface of the filter bag.
[0039] The resistance value of the bag filter 51 increases with the thickness of the dust layer on the filter bag surface. In order to prevent the resistance value from exceeding the specified value and being unable to continue filtering, the dust on the filter bag surface needs to be cleaned. After the bag filter 51 has worked for a specified time, the controller controls the solenoid valve 52 to open so that the compressed air in the air compressor 53 is ejected through the solenoid valve 52 to form an induced airflow into the filter bag of the bag filter 51. The filter bag experiences an instantaneous positive pressure and expands rapidly, causing the dust deposited on the outside of the filter bag to fall off and leave the outer bucket 2 along the inner wall of the outer bucket 2 under the action of gravity.
[0040] The implementation principle of Example 1 is as follows: the operator pushes the work frame 1 to the top of the conveyor belt 8 and turns on all fans 41. The material claws are controlled to unload, and the grains are accumulated on the dust shielding plate 61 and enter the outer bucket 2 through the dust shielding groove 62, and then fall on the conveyor belt 8 along the inclined inner wall of the outer bucket 2 to complete the unloading. The airflow generated by the fan 41 will roll the dust raised by the collision between the grain and the dust shielding plate 61 and the dust raised by the grain passing through the dust shielding plate 61 and dispersed and falling into the dust removal duct 7, and the air will leave the dust on the bag dust collector 51 through the bag dust collector 51, and the fan 41 will discharge the clean airflow out of the outer bucket 2, reducing the dust emission during the unloading process. In the gap of unloading, the dust adhering to the bag dust collector 51 is shaken off by the pulse airflow output by the air compressor 53 and the solenoid valve 52, and is transported away with the grain, reducing the occurrence of a large amount of dust adhering to the bag dust collector 51, which causes the total gram weight of the grain to be reduced.
[0041] Example 2
[0042] Reference Figure 3 and Figure 4 , because the grain pile easily blocks all the dust shielding grooves 62 on the dust shielding plate 61 during unloading, the airflow cannot send the dust raised by the collision between the grain and the dust shielding plate 61 into the outer bucket 2, and the dust will be directly dispersed in the air, affecting the air quality. In order to reduce the emission of this part of dust, a number of air holes 31 are opened on the side wall of the inner bucket 3. The air holes 31 are distributed on the vertical side walls around the inner bucket 3, and the air holes 31 are set higher than the dust shielding device 6. The air holes 31 connect the inner bucket 3 with the dust removal air duct 7. Baffles 32 are set on the outer walls around the inner bucket 3, and the baffles 32 are slidably matched with the inner bucket 3. The baffles 32 can cover the end of the air holes 31 close to the outer bucket 2. A movable frame 33 is installed on the inner bucket 3, and the movable frame 33 is movably set at the top of the inner bucket 3. An elastic member 34 is set between the movable frame 33 and the inner bucket 3. In this embodiment, the elastic member 34 is a spring. The top wall of the movable frame 33 can abut against the material claws used for material transfer. A rod is installed on the movable frame 33 by bolts, and the rod passes through the top wall of the outer bucket 2 and is connected to the baffle 32 by bolts. The movable frame 33 drives the baffle 32 to reciprocate in the vertical direction. The bottom end of the baffle 32 away from the movable frame 33 can protrude from the vertical side wall of the inner bucket 3 and block part of the dust removal air duct 7.
[0043] The implementation principle of Example 2 is as follows: when unloading, the material claw moves to the top of the inner bucket 3 and descends. During the descent of the material claw, the bottom of the material claw contacts the top wall of the movable frame 33 and drives the movable frame 33 to move downward. The movable frame 33 moves downward and drives the baffle 32 to move downward through the rod until the baffle 32 exposes the air hole 31, and the bottom of the baffle 32 blocks part of the dust removal air duct 7. The negative pressure generated by the fan 41 sucks air from the air hole 31 into the dust removal air duct 7, and the air flow sucks the dust raised by the collision of the grain and the dust shielding plate 61 into the dust removal air duct 7 through the air hole 31, and is filtered by the bag dust collector 51. The bottom end of the baffle 32 blocks the upper half of the dust removal air duct 7, and the cross-sectional area of the dust removal air duct 7 is reduced, so as to avoid the reduction of the air flow pressure in the outer bucket 2 due to the opening of the air hole 31, which affects the collection effect of the dust in the outer bucket 2.
[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. Mobile dust removal discharge hopper, characterized by: The invention comprises a working frame (1), wherein an outer bucket (2) is arranged on the working frame (1), the top end of the outer bucket (2) is mounted on the working frame (1), and the bottom end of the outer bucket (2) is suspended in the air; an inner bucket (3) is mounted in the outer bucket (2), the inner bucket (3) is mounted on the top end of the outer bucket (2), and the bottom end of the inner bucket (3) is suspended in the air; a dust removal air duct (7) is formed between the outer bucket (2) and the inner bucket (3); a negative pressure device (4) is mounted on the outer bucket (2), and the air suction port of the negative pressure device (4) is arranged in the dust removal air duct (7); a filtering device (5) is mounted on the air suction port of the negative pressure device (4); and a dust shielding device (6) is mounted in the inner bucket (3).
2. The mobile dust removal and discharge hopper according to claim 1 is characterized in that: The angle between the inclined side wall of the outer bucket (2) and the horizontal direction is 50 degrees, and the inclined side wall of the inner bucket (3) is parallel to the inclined side wall of the outer bucket (2).
3. The mobile dust removal and discharge hopper according to claim 1 is characterized in that: The dust shielding device (6) comprises a dust shielding plate (61), the peripheral wall of which is connected to the inner wall of the inner bucket (3); a plurality of dust shielding grooves (62) are provided on the dust shielding plate (61), and the dust shielding grooves (62) penetrate the top wall and the bottom wall of the dust shielding plate (61); the inner walls of the dust shielding grooves (62) are arranged to be inclined, and the inner walls of the dust shielding grooves (62) are inclined downward and inward.
4. The mobile dust removal and discharge hopper according to claim 3 is characterized in that: The side length of the dust shielding groove (62) near the center of the dust shielding plate (61) is greater than the side length of the dust shielding groove (62) near the edge of the dust shielding plate (61).
5. The mobile dust removal and discharge hopper according to claim 1 is characterized in that: The negative pressure device (4) comprises a plurality of fans (41), wherein the fans (41) are installed in the dust removal air duct (7), the air intake of the fans (41) is connected to the filter device (5), and the air outlet of the fans (41) is connected to the outside air.
6. The mobile dust removal discharge hopper according to claim 5 is characterized in that: The filtering device (5) comprises a bag dust collector (51), a solenoid valve (52) and an air compressor (53); the bag dust collector (51) is installed in the dust removal air duct (7); one side of the bag dust collector (51) is connected to the outer bucket (2), and the other side is connected to the inner bucket (3); the air suction port of the fan (41) is connected to the air outlet of the bag dust collector (51); the solenoid valve (52) is installed on the outer bucket (2), the solenoid valve (52) is connected to the bag dust collector (51), and the air compressor (53) is installed at one end of the solenoid valve (52) away from the bag dust collector (51), and the solenoid valve (52) controls the output of the air compressor (53).
7. The mobile dust removal and discharge hopper according to claim 1 is characterized in that: A plurality of air holes (31) are provided on the side wall of the inner bucket (3), and the air holes (31) are arranged higher than the dust shielding device (6); a baffle (32) is provided on the outer wall of the inner bucket (3), and the baffle (32) is slidably matched with the inner bucket (3), and the baffle (32) can cover the end of the air hole (31) close to the outer bucket (2); a movable frame (33) is installed on the inner bucket (3), and the movable frame (33) is movably arranged at the top end of the inner bucket (3), and an elastic member (34) is provided between the movable frame (33) and the inner bucket (3); the top wall of the movable frame (33) can be abutted against a material claw for moving materials; the movable frame (33) is connected to the baffle (32), and the movable frame (33) drives the baffle (32) to move back and forth in the vertical direction.
8. The mobile dust removal and discharge hopper according to claim 7 is characterized in that: The bottom end of the baffle (32) away from the movable frame (33) can protrude from the vertical side wall of the inner bucket (3) and block a portion of the dust removal air duct (7).