A sliding type cleaning air sieve and its clogging clearing structure

Abstract

The present invention relates to the technical field of air flow sieves, and discloses a sliding cleaning air flow sieve and its clogging clearing structure, which includes a sieve cage, a stirring assembly and a blowing assembly. The stirring assembly is arranged inside the sieve cage, and the blowing assembly is arranged at one end of the sieve cage; the sieve cage includes a fixed frame, and a sieve mesh is arranged on the fixed frame; the blowing assembly includes an air storage tank, the air storage tank is arranged above the fixed frame, a bracket is arranged below the air storage tank, a pulse valve is arranged above the air storage tank, a shunt pipe joint is arranged at the end of the pulse valve away from the air storage tank, and a plurality of air pipes are arranged on the shunt pipe joint; through the coordinated work of the stirring assembly and the blowing assembly, the present invention realizes the organic combination of screening and clogging clearing. The air flow generated by the wind wheel blades during the screening process can reduce the accumulation of materials, and the blowing assembly performs efficient clogging clearing when necessary to ensure that the sieve mesh maintains good permeability.

Description

Technical Field

[0001] The invention belongs to the technical field of air flow sieves, and specifically relates to a sliding cleaning air flow sieve and its clogging clearing structure. Background Art

[0002] The sliding cleaning air flow sieve mainly realizes the classification and screening of materials through the action of centrifugal force and air flow, and is widely used in industrial production for screening materials. It usually includes a screening cylinder body with rotating blades installed inside. Centrifugal force is generated by the rotation of the blades, enabling the materials to be screened on the sieve mesh.

[0003] Chinese Patent with Application No. 2021214889401 discloses a cantilever horizontal air flow sieve reverse blowing and screen cleaning device, which includes a cantilever horizontal air flow sieve screen body, an air storage tank, a pulse valve, and a straight-through threaded pipe. A fixed support is welded on the side of the cantilever horizontal air flow sieve screen body, the air storage tank is installed on the fixed support, the pulse valve is installed on the air storage tank, a shunt pipe joint is installed on the pulse valve, the straight-through threaded pipe is welded on the surface of the cantilever horizontal air flow sieve screen body, one end of the straight-through threaded pipe penetrates into the inside of the cantilever horizontal air flow sieve screen body, a nozzle is connected to the end of the straight-through threaded pipe that penetrates into the inside of the cantilever horizontal air flow sieve screen body, a trachea joint is connected to the other end of the straight-through threaded pipe, and a trachea is connected between the trachea joint and the shunt pipe joint; High-pressure gas reverse blowing is used to transfer force to the sieve mesh. Affected by the reverse blowing air flow, the sieve mesh is convenient for cleaning the sticky materials adhering to the sieve mesh, reducing mesh clogging, but it is impossible to effectively clean the sieve mesh in a timely manner according to the clogging situation of the sieve mesh.

[0004] Based on the above scheme, the specification of the sieve mesh is selected according to the particle size of the material to be screened. If the particle size of the material to be screened is smaller, the aperture of the corresponding sieve mesh is smaller. During screening, the resistance of the material passing through the sieve mesh increases, thereby reducing the material penetration rate and affecting the screening effect; When the material particle size is close to the sieve mesh aperture, the material particles are more likely to embed in the mesh holes of the sieve mesh, resulting in sieve mesh clogging; And when material particles similar to the sieve mesh aperture embed in the mesh holes of the sieve mesh, it will accelerate the clogging degree of the sieve mesh, so it is impossible to effectively clean the sieve mesh in a timely manner according to the clogging situation of the sieve mesh. Summary of the Invention

[0005] In view of the above problems, the present invention provides a sliding cleaning air flow sieve and its clogging clearing structure to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A clogging clearing structure for a sliding cleaning air flow sieve, including a sieve cage, a stirring assembly, and a blowing assembly. The stirring assembly is arranged inside the sieve cage, and the blowing assembly is arranged at one end of the sieve cage;

[0007] The sieve cage includes a fixed frame, and a sieve mesh is arranged on the fixed frame;

[0008] The injection assembly includes a gas storage tank, the gas storage tank is arranged above the fixed frame, a bracket is arranged below the gas storage tank, a pulse valve is arranged above the gas storage tank, a shunt pipe joint is arranged at one end of the pulse valve away from the gas storage tank, a plurality of air pipes are arranged on the shunt pipe joint, and a spray head is arranged at one end of the air pipe away from the shunt pipe joint;

[0009] A fixing seat is arranged on the surface of the spray head, movable rods are arranged at both ends of the fixing seat, a mounting frame is arranged at one end of the movable rod away from the fixing seat, and fan blades are arranged on the mounting frame.

[0010] Preferably, a limiting groove adapted to the movable rod is formed inside the fixing seat, and a spring is arranged inside the limiting groove. One end of the movable rod away from the mounting frame is fixedly connected to the spring.

[0011] Preferably, a plurality of ventilation grooves are formed on the surface of the mounting frame, a diversion pipe is arranged at one end of the spray head close to the mounting frame, and a movable card slot adapted to the diversion pipe is formed inside the spray head.

[0012] Preferably, a plurality of cleaning components are arranged at intervals on the outer side of the fixed frame, and each cleaning component includes a plurality of spray heads. The plurality of spray heads are arranged at intervals along the length direction of the fixed frame, and the spraying direction of the spray heads is perpendicular to the screen.

[0013] Preferably, a rotating seat is arranged on the surface of the mounting frame, and a rotating groove is formed at the position where the mounting frame is connected to the rotating seat;

[0014] The number of the fan blades is multiple, and the multiple fan blades are fixedly arranged in a ring on the rotating seat.

[0015] Preferably, the stirring assembly includes a rotating rod, an adjusting assembly is arranged on the surface of the rotating rod, and the adjusting assembly includes wind wheel blades. Hinge seats are hinged at both ends of the wind wheel blades, and an electric telescopic rod is arranged at one end of the hinge seat close to the rotating rod. One end of the electric telescopic rod away from the hinge seat is fixedly arranged on the rotating rod.

[0016] Preferably, the number of the adjusting assemblies is multiple, and the multiple adjusting assemblies are evenly distributed along the circumferential direction of the rotating rod at equal intervals.

[0017] The present invention also provides a sliding type cleaning air flow sieve, which includes a machine body assembly and the plugging removal structure described above. The machine body assembly includes a screening bin, a feeding bin is arranged at one end of the screening bin, a sealing cover is arranged at the other end of the screening bin away from the feeding bin, one end of the sealing cover close to the screening bin is fixedly connected to the fixed frame, the bracket is fixedly arranged at one end of the screening bin close to the sealing cover, and a positioning groove adapted to the fixing seat is formed on the surface of the screening bin.

[0018] Preferably, an observation window is provided on the surface of the screening bin, a feed inlet is provided above the feed bin, a main shaft is provided inside the feed bin, spiral blades are provided on the surface of the main shaft, one end of the main shaft is fixedly connected to a rotating rod, and a driving mechanism is provided at the end of the main shaft away from the rotating rod.

[0019] Preferably, a frame is provided below the screening bin, a fine material discharge port and a coarse material discharge port are provided at one end of the screening bin close to the frame, sliding blocks are provided on both sides of the frame, and a sliding rod is provided inside the sliding block, and one end of the sliding rod is fixedly connected to a sealing cover.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By setting up structures such as a spray head, a fixed seat, a movable rod, a mounting frame and a fan blade in cooperation, when spraying, the high-pressure gas pushes the diversion pipe to extend, shortening the distance between the spray head and the screen, increasing the cleaning and blocking force of fixed-point spraying. At the same time, the high-pressure gas drives the fan blade to rotate to generate a rotating air flow, further enhancing the cleaning and blocking effect, and effectively removing the attached materials on the screen.

[0022] 2. By assembling a gravity sensor inside the screen cage, the present invention can monitor the change of material weight in real time, accurately judge the blockage condition of the screen. When the screen is blocked, by adjusting the inclination angle of the wind wheel blade and the gap between the wind wheel blade and the screen, and using the scraping action of the wind wheel blade and the high-pressure gas pulse spraying of the spraying assembly, the effective cleaning of the screen is realized, and the further blockage of the screen aperture by the accumulation of material particles is avoided.

[0023] 3. According to the particle size of the material, the present invention adjusts the gap between the wind wheel blade and the inner wall of the screen through the electric telescopic rod, so that the air flow generated by the wind wheel blade acts more directly on the surface of the screen, further improving the passing rate of the material through the screen and the screening efficiency. According to the particle size of the material and the blockage condition of the screen, the gap and inclination angle between the wind wheel blade and the inner wall of the screen are adjusted through the electric telescopic rod to optimize the air flow distribution and reduce the possibility of material accumulation and screen blockage. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention from the first perspective and without the observation window;

[0025] Figure 2 It is a schematic diagram of the second perspective of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the body assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the state where the screen cage is separated from the screening bin of the present invention;

[0028] Figure 5 Schematic partial sectional view of the screening bin structure of the present invention;

[0029] Figure 6 In the present invention Figure 5 Enlarged view of part A;

[0030] Figure 7 Schematic diagram of the stirring component structure of the present invention;

[0031] Figure 8 Schematic diagram of the nozzle structure of the present invention;

[0032] Figure 9 Schematic diagram of the assembly structure of the nozzle and the fixed seat of the present invention;

[0033] Figure 10 Schematic partial sectional view of the diversion pipe structure of the present invention.

[0034] In the figure: 1. Body assembly; 101. Screening bin; 1011. Observation window; 102. Feed bin; 1021. Feed inlet; 1022. Spiral blade; 1023. Main shaft; 103. Sealing cover; 104. Frame; 105. Fine material discharge port; 106. Coarse material discharge port; 107. Slide bar; 108. Slide block; 2. Screen cage; 201. Fixed frame; 202. Screen mesh; 3. Stirring component; 301. Rotating rod; 302. Electric telescopic rod; 303. Hinge seat; 304. Wind wheel blade; 4. Blowing component; 401. Gas storage tank; 402. Pulse valve; 403. Shunt pipe joint; 404. Air pipe; 405. Nozzle; 4051. Diversion pipe; 406. Fixed seat; 407. Moving rod; 408. Mounting bracket; 4081. Ventilation groove; 409. Fan blade; 410. Bracket. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] As Figures 1 to 3 shown, a clogging removal structure of the present invention for slidingly cleaning an air flow sieve includes a screen cage 2, a stirring component 3, and a blowing component 4. The stirring component 3 is arranged inside the screen cage 2, and the blowing component 4 is arranged at one end of the screen cage 2;

[0037] As Figures 4 to 6 shown, the screen cage 2 includes a fixed frame 201, and a screen mesh 202 is arranged on the fixed frame 201;

[0038] The injection assembly 4 includes a gas storage tank 401 for storing high-pressure gas. The capacity and pressure of the gas storage tank 401 are designed to meet the requirements of the injection system, ensuring sufficient gas flow during pulse injection. The gas storage tank 401 is arranged above the fixed frame 201. A support 410 is provided below the gas storage tank 401, and a pulse valve 402 is provided above the gas storage tank 401. The pulse valve 402 is periodically opened and closed according to a preset time interval and injection time. Usually, an electromagnetic pulse valve is used for the pulse valve 402, and the movement of the valve core is controlled by the energization and de-energization of the electromagnetic coil to achieve rapid gas release. A shunt pipe joint 403 is provided at one end of the pulse valve 402 away from the gas storage tank 401. The shunt pipe joint 403 evenly distributes the high-pressure gas released by the pulse valve 402 to a plurality of air pipes 404. The design of the shunt pipe joint 403 needs to ensure the uniformity of gas distribution, avoiding affecting the blockage clearing effect due to excessive or insufficient local gas flow. A plurality of air pipes 404 are provided on the shunt pipe joint 403, and a nozzle 405 is provided at one end of the air pipe 404 away from the shunt pipe joint 403.

[0039] A plurality of cleaning assemblies are spaced apart on the outside of the fixed frame 201. The cleaning assembly includes a plurality of nozzles 405. The plurality of nozzles 405 are spaced apart along the length direction of the fixed frame 201, and the spraying direction of the nozzles 405 is perpendicular to the screen 202.

[0040] As Figure 7 shown, the stirring assembly 3 includes a rotating rod 301. An adjusting assembly is provided on the surface of the rotating rod 301. The adjusting assembly includes wind wheel blades 304. Hinge seats 303 are hinged at both ends of the wind wheel blades 304. An electric telescopic rod 302 is provided at one end of the hinge seat 303 close to the rotating rod 301, and the end of the electric telescopic rod 302 away from the hinge seat 303 is fixedly arranged on the rotating rod 301. The number of adjusting assemblies is multiple, and the multiple adjusting assemblies are evenly distributed along the circumferential direction of the rotating rod 301 at equal intervals.

[0041] The present invention also provides a sliding cleaning air flow sieve, which includes a body assembly 1 and the above-mentioned blockage clearing structure.

[0042] As Figures 3 - 5 shown, the body assembly 1 includes a screening bin 101. A feed bin 102 is provided at one end of the screening bin 101, and a sealing cover 103 is provided at the end of the screening bin 101 away from the feed bin 102. One end of the sealing cover 103 close to the screening bin 101 is fixedly connected to the fixed frame 201. The support 410 is fixedly arranged at the end of the screening bin 101 close to the sealing cover 103. A fixing seat 406 is provided on the surface of the nozzle 405, and a positioning groove adapted to the fixing seat 406 is formed on the surface of the screening bin 101.

[0043] An observation window 1011 is provided on the surface of the screening bin 101. A feed inlet 1021 is provided above the feed bin 102. A main shaft 1023 is provided inside the feed bin 102. A spiral blade 1022 is provided on the surface of the main shaft 1023. One end of the main shaft 1023 is fixedly connected to a rotating rod 301. A driving mechanism is provided at the end of the main shaft 1023 away from the rotating rod 301.

[0044] A frame 104 is provided below the screening bin 101. A fine material discharge port 105 and a coarse material discharge port 106 are provided at one end of the screening bin 101 close to the frame 104. Sliders 108 are provided on both sides of the frame 104. A sliding rod 107 is provided inside the slider 108. One end of the sliding rod 107 is fixedly connected to a sealing cover 103.

[0045] It should be noted that the driving mechanism includes a motor and a belt drive mechanism. Specifically, when the motor is turned on, the motor drives the belt drive mechanism to move. Under the combined action of the motor and the belt drive mechanism, the main shaft 1023 rotates, and the spiral blade 1022 rotates with the main shaft 1023, thereby realizing the transportation of materials. During this process, the main shaft 1023 drives the stirring assembly 3 to rotate together, so that the wind wheel blades 304 on the stirring assembly 3 rotate to generate air flow.

[0046] During use, first select and replace the sieve mesh 202 with a suitable specification according to the type and particle size requirements of the material. When replacing the sieve mesh 202, first open the sealing cover 103 and separate the sealing cover 103 from the screening bin 101, and then manually pull the sealing cover 103 in a direction away from the screening bin 101. The sealing cover 103 drives the fixing frame 201 to move together. During this process, the sealing cover 103 drives the sliding rod 107 to move together, so that the sliding rod 107 passes through the slider 108 and moves in a direction away from the screening bin 101, and the fixing frame 201 and the sieve mesh 202 are removed from the screening bin 101, as Figure 4 shown in the state, which is convenient for replacing the sieve mesh 202 and cleaning. Through the cooperation of the sliding rod 107 and the slider 108, the stability during movement is improved, and at the same time, it is convenient for disassembly and assembly, labor-saving, and can be easily operated by one person. After the sieve-changing operation is completed, the sealing cover 103 can be pushed to drive the sliding rod 107 to move in a direction close to the screening bin 101, so that the fixing frame 201 and the sieve mesh 202 are assembled into the screening bin 101.

[0047] Start the drive mechanism. The drive mechanism includes a motor and a belt drive mechanism. Specifically, turn on the motor, and the motor drives the belt drive mechanism to make it move. Under the combined action of the motor and the belt drive mechanism, the main shaft 1023 rotates, and the spiral blade 1022 rotates together with the main shaft 1023, thereby realizing the transportation of materials. Through the cooperation of the main shaft 1023 and the spiral blade 1022, the materials are transported and preliminarily stirred. During this process, the main shaft 1023 drives the stirring assembly 3 to rotate together, so that the wind wheel blades 304 on the stirring assembly 3 rotate to generate an air flow. At the same time, the materials to be screened enter from the feed port 1021. Under the action of the spiral blade 1022, the materials enter the inside of the screening cage 2. Under the action of the wind wheel blades 304, the materials are simultaneously affected by centrifugal force and cyclone propulsion force, so that the materials are ejected onto the screen 202 of the fixed frame 201. The smaller particulate materials will pass through the screen 202 and be discharged from the fine material discharge port 105, while the larger particulate materials are discharged from the coarse material discharge port 106.

[0048] During the above process, since the rotation of the wind wheel blades 304 generates centrifugal wind force, under the action of the centrifugal wind force, the materials are sprayed onto the screen 202. During this process, some materials will adhere to the screen 202, which is likely to cause blockage and affect the screening efficiency over time. At this time, the screen 202 is cleaned by the spraying assembly 4. Specifically, the controller controls the pulse valve 402 to open, and releases the high-pressure gas in the gas storage tank 401 in the form of pulses. After being distributed to each nozzle 405 through the shunt pipe joint 403 and the air pipe 404, finally the high-pressure gas is sprayed onto the surface of the screen 202 through the nozzle 405. The instantaneous impact force can blow away the materials blocking the pores of the screen 202 and restore the permeability of the screen 202. This process is intermittent, aiming to efficiently remove blockages and avoid excessive impact on the screen 202.

[0049] Since the rotation of the wind wheel blades 304 generates an air flow, the direction of the air flow is blowing towards the screen 202 inside the fixed frame 201, while the air flow of the nozzle 405 in the spraying assembly 4 is blowing towards the screen 202 from the outside of the fixed frame 201. The directions of the two air flows are exactly opposite, that is, by increasing the reaction air flow through external multi-point spraying, the effect of cleaning the screen 202 is improved, so as to clean the materials attached to the screen 202, thereby ensuring the screening accuracy and production capacity.

[0050] During use, select the specification of the screen mesh 202 according to the particle size of the material to be screened. If the particle size of the material to be screened is smaller, the aperture of the corresponding screen mesh 202 is smaller, and the resistance of the material passing through the screen mesh 202 during screening increases, resulting in a decrease in the screen penetration rate of the material and affecting the screening effect; when the particle size of the material is close to the aperture of the screen mesh 202, the material particles are more likely to be embedded in the mesh holes on the screen mesh 202, causing the screen mesh 202 to become blocked; and when the material particles similar to the aperture of the screen mesh 202 are embedded in the mesh holes of the screen mesh 202, the degree of blockage of the screen mesh 202 will be accelerated, and thus the screen mesh 202 cannot be effectively cleaned in a timely manner according to the blockage situation of the screen mesh 202.

[0051] To solve the above problems, the blockage clearing structure further includes:

[0052] As Figure 6 、 Figure 8 shown in the figure, movable rods 407 are provided at both ends of the fixed seat 406. An installation frame 408 is provided at the end of the movable rod 407 away from the fixed seat 406. A plurality of ventilation grooves 4081 are formed on the surface of the installation frame 408. A fan blade 409 is provided on the installation frame 408. A rotating seat is provided on the surface of the installation frame 408. A rotating groove is formed at the position where the installation frame 408 is connected to the rotating seat. The number of fan blades 409 is multiple, and the multiple fan blades 409 are fixedly arranged in a ring on the rotating seat.

[0053] A limiting groove adapted to the movable rod 407 is formed inside the fixed seat 406, and a spring is provided inside the limiting groove. The end of the movable rod 407 away from the installation frame 408 is fixedly connected to the spring.

[0054] As Figure 10 shown in the figure, a diversion pipe 4051 is provided at the end of the spray head 405 close to the installation frame 408. A movable card slot adapted to the diversion pipe 4051 is formed inside the spray head 405.

[0055] During use, in order to improve the screening effect and reduce the degree of blockage of the screen mesh 202, before screening, adjust the gap between the wind wheel blades 304 and the inner wall of the screen mesh 202 to adapt to the screening of materials with different particle sizes. If the particle size of the material is small, it indicates that the material has a small density and poor fluidity. At this time, it is necessary to simultaneously control the electric telescopic rods 302 at both ends of the wind wheel blades 304 to extend, so that the gap between the wind wheel blades 304 and the inner wall of the screen mesh 202 becomes smaller. Specifically, the controller controls the electric telescopic rods 302 to extend, and the electric telescopic rods 302 push the hinge seat 303 and the wind wheel blades 304 to move away from the rotating rod 301, so that the gap between the wind wheel blades 304 and the inner wall of the screen mesh 202 becomes smaller, ensuring that the material can be effectively screened during the rotation of the wind wheel blades 304, and at the same time reducing the accumulation of the material on the surface of the screen mesh 202 and avoiding the blockage of the screen mesh 202.

[0056] Meanwhile, during screening, the function of the wind wheel blades 304 is to help the material pass through the screen 202 through air flow disturbance and centrifugal force. By reducing the gap between the wind wheel blades 304 and the inner wall of the screen 202, the smaller gap can ensure that the air flow generated by the wind wheel blades 304 acts more directly on the surface of the screen 202, so that the air flow closer to the screen 202 can assist the material in passing through the screen. That is, by using the rotation of the wind wheel blades 304 and the action of the air flow, the accumulated material is timely dispersed or guided to pass through the screen 202, improving the passability of the material, reducing the accumulation phenomenon, and increasing the screen passing rate and screening efficiency of the material.

[0057] It should be noted that a gravity sensor is assembled on the fixed frame 201. Through the gravity sensor, the weight change of the material inside the screening cage 2 can be monitored in real time. When the screen 202 is blocked, the material cannot pass through the aperture of the screen 202 smoothly, resulting in the accumulation of the material in the screening cage 2 and an increase in weight; when the screen 202 is unobstructed and the material can pass through the screen 202 smoothly, the weight of the material in the screening cage 2 remains at a relatively stable level. The blockage condition of the screen 202 is judged through the detection value of the gravity sensor, specifically as follows:

[0058] When the detection value of the gravity sensor is within the standard range, it indicates that the screen 202 is in a normal working state at this time, the material can pass through the screen 202 smoothly, and the screening condition of the screening cage 2 is good.

[0059] When the detection value of the gravity sensor exceeds the maximum threshold within the standard range, it indicates that the screen 202 is blocked at this time. When the material particle size is close to the aperture of the screen 202, the material particles are more likely to be embedded in the mesh holes on the screen 202, resulting in excessive material particles adhering to the surface of the screen 202. At this time, it is necessary to adjust the gap between one of the wind wheel blades 304 on the stirring assembly 3 and the screen 202. Specifically, the controller controls the electric telescopic rod 302 at both ends of the wind wheel blade 304 to extend. The electric telescopic rod 302 pushes the hinge seat 303 and the wind wheel blade 304 to move away from the rotating rod 301, so that the wind wheel blade 304 fits against the inner wall of the screen 202. Under the action of rotation, the wind wheel blade 304 scrapes the material particles adhering to the surface of the screen 202, so as to achieve the purpose of circular scraping of the screen 202, avoiding the accumulation of material particles on the surface of the screen 202 and further blocking the aperture of the screen 202, and reducing the screening efficiency.

[0060] Meanwhile, by changing the inclination angle of another wind wheel blade 304 on the stirring assembly 3, the airflow distribution in the sieve cage 2 is changed. Specifically, the controller controls the electric telescopic rod 302 on the wind wheel blade 304 close to the feed bin 102 to extend. During this process, the electric telescopic rod 302 pushes the hinge seat 303 and the wind wheel blade 304 to move away from the rotating rod 301, so that the gap between the position of the wind wheel blade 304 close to the feed bin 102 and the sieve mesh 202 becomes smaller. During this process, the wind wheel blade 304 tilts, and the gap between the end of the wind wheel blade 304 close to the feed bin 102 and the sieve mesh 202 is smaller than the gap between the end of the wind wheel blade 304 close to the coarse material discharge port 106 and the sieve mesh 202. That is, the tilt of the wind wheel blade 304 will cause the airflow to be unevenly distributed on the surface of the sieve mesh 202. The airflow speed at the end with a smaller gap is faster and the pressure is higher, which can more effectively blow and push the material through the sieve mesh 202, realizing the classification and passing through the mesh of finer particles, and avoiding the blockage of the material inside the sieve cage 2 at the end close to the feed bin 102, affecting normal feeding. At the end with a larger gap, the airflow speed is relatively slow, the pressure is low, and the movement of the material is relatively slow, which is suitable for processing materials with larger particles. That is, it avoids the coarse material that has not passed through the sieve mesh 202 in the sieve cage 2 from quickly discharging from the coarse material discharge port 106 along the sieve mesh 202, thereby prolonging the residence time of the coarse material in the sieve cage 2. Under the action of the wind wheel blade 304 in the stirring assembly 3, the coarse material is fully stirred and broken, avoiding waste of materials.

[0061] After the above operations, after a preset time, observe the change in the detection value of the gravity sensor. In this way, the blockage situation of the sieve mesh 202 and the next cleaning operation are judged through the detection value of the gravity sensor. If the detection value of the gravity sensor decreases and is within the standard range at this time, it indicates that the above operations are effective in clearing the blockage of the sieve mesh 202, thereby improving the screening ability of the sieve mesh 202. If the detection value of the gravity sensor decreases but the change in the value is not large at this time, it indicates that only by adjusting the wind wheel blade 304 to change the airflow in the sieve cage 2 and the scraping method of the wind wheel blade 304 cannot meet the cleaning requirements of the sieve mesh 202. At this time, control the blowing assembly 4 to work. Specifically:

[0062] The controller controls multiple pulse valves 402 to open, adjusts the pressure of the high-pressure gas in the gas storage tank 401 to a preset value, releases the high-pressure gas in the gas storage tank 401 in the form of pulses, and distributes it to each nozzle 405 through the shunt pipe joint 403 and the air pipe 404. The high-pressure gas in the nozzle 405 will push the diversion pipe 4051 to extend a preset distance. During this process, the moving distance of the mounting bracket 408 is equal to the moving distance of the diversion pipe 4051. The diversion pipe 4051 and the mounting bracket 408 are always in a combined state. The diversion pipe 4051 pushes the mounting bracket 408 to move away from the fixed seat 406. At this time, the spring is stretched, and the movable rod 407 moves along the limit groove inside the fixed seat 406 and together with the mounting bracket 408. Thus, the high-pressure gas inside the nozzle 405 passes through the diversion pipe 4051 and sprays onto the surface of the sieve mesh 202 from the central position of the mounting bracket 408. The impact force generated instantaneously can blow the materials blocked in the pore diameter of the sieve mesh 202 away. That is, by extending the diversion pipe 4051 a preset distance, the distance between the nozzle 405 and the sieve mesh 202 is shortened, thereby increasing the clogging removal force of the fixed-point spraying on the sieve mesh 202. And by performing fixed-point spraying on the sieve mesh 202, the sieve mesh 202 vibrates. Under the action of vibration, the materials attached to the surface of the sieve mesh 202 fall off, achieving the purpose of cleaning.

[0063] According to the clogging degree of the sieve mesh 202, the controller controls the pressure of the high-pressure gas in the gas storage tank 401, thereby changing the extension length of the diversion pipe 4051 inside the nozzle 405, thereby shortening the distance between the nozzle 405 and the sieve mesh 202, and thereby increasing the force of fixed-point spraying. That is, the clogging removal strategy is flexibly adjusted according to the clogging degree of the sieve mesh 202, further improving the clogging removal effect.

[0064] It should be noted that initially, under the action of the spring, the mounting bracket 408 supports the diversion pipe 4051 to prevent the diversion pipe 4051 from extending out of the inside of the nozzle 405. That is, the diversion pipe 4051 is inside the nozzle 405, and one end of the diversion pipe 4051 close to the mounting bracket 408 contacts the mounting bracket 408. At this time, the diversion pipe 4051 and the mounting bracket 408 are in a combined state.

[0065] After the above operations, in order to improve the cleaning effect on the screen 202, the controller controls multiple pulse valves 402 to open and increases the pressure of the high-pressure gas in the gas storage tank 401. Then, the high-pressure gas in the gas storage tank 401 is distributed to each nozzle 405 through the shunt pipe joint 403 and the air pipe 404. During this process, the high-pressure gas in the nozzle 405 pushes and fully extends the diversion pipe 4051. However, at this time, the thrust generated by the high-pressure gas is much greater than the acting force of the spring, and the spring is stretched. Under the action of the high-pressure gas, the mounting frame 408 is stressed and drives the movable rod 407 to move away from the fixed seat 406, that is, the moving distance of the mounting frame 408 is greater than the moving distance of the diversion pipe 4051. At this time, the diversion pipe 4051 and the mounting frame 408 are in a separated state, and the high-pressure gas in the nozzle 405 sprays out from the diversion pipe 4051. Part of the high-pressure gas blows towards the fan blade 409 through the ventilation slot 4081 on the mounting frame 408. Under the action of the high-pressure gas, the fan blade 409 is driven to rotate, that is, the rotating seat on the mounting frame 408 rotates along the rotating groove on the mounting frame 408. The rotation of the fan blade 409 generates a rotating air flow, which further enhances the disturbance effect of the gas and improves the clogging clearing efficiency. Moreover, the rotating air flow blows towards the screen 202. Through the rotating air flow, the energy of the high-pressure gas can be dispersed over a larger area, increasing the cleaning area of the screen 202, effectively removing the materials attached to the screen 202, and improving the permeability of the screen 202. At the same time, the rotating air flow can form an air flow curtain on the surface of the screen 202, which helps to prevent materials from adhering to the screen 202 and further improves the screening efficiency.

[0066] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0067] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clogging removal structure for a sliding cleaning air sieve, characterized in that: It includes a screening cage, a stirring component and a blowing component. The stirring component is arranged inside the screening cage, and the blowing component is arranged at one end of the screening cage; the screening cage includes a fixed frame, and a screen is arranged on the fixed frame. The blowing component includes an air storage tank. The air storage tank is arranged above the fixed frame. A support is arranged below the air storage tank. A pulse valve is arranged above the air storage tank. A shunt pipe joint is arranged at the end of the pulse valve away from the air storage tank. A plurality of air pipes are arranged on the shunt pipe joint. Nozzles are arranged at the ends of the air pipes away from the shunt pipe joint; fixing seats are arranged on the surfaces of the nozzles. Movable rods are arranged at both ends of the fixing seats. Mounting frames are arranged at the ends of the movable rods away from the fixing seats. Fan blades are arranged on the mounting frames. The stirring component includes a rotating rod. Adjusting components are arranged on the surface of the rotating rod. The adjusting components include wind wheel blades. Hinge seats are hingedly arranged at both ends of the wind wheel blades. Electric telescopic rods are arranged at the ends of the hinge seats close to the rotating rod. The ends of the electric telescopic rods away from the hinge seats are fixedly arranged on the rotating rod. A gravity sensor is assembled on the fixed frame to detect values and judge the clogging condition of the screen; when the detected value of the gravity sensor exceeds the maximum threshold within the standard range, adjust the gap between one of the wind wheel blades on the stirring component and the screen. The controller controls the electric telescopic rods at both ends of the wind wheel blade to extend. The electric telescopic rod pushes the hinge seat and the wind wheel blade to move away from the rotating rod, so that the wind wheel blade fits against the inner wall of the screen. Under the action of rotation, the wind wheel blade scrapes the material particles attached to the surface of the screen. At the same time, change the inclination angle of another wind wheel blade on the stirring component. The controller controls the electric telescopic rod on the wind wheel blade close to the feed bin to extend. The gap between the position of the wind wheel blade close to the feed bin and the screen becomes smaller. The wind wheel blade tilts. The tilting of the wind wheel blade causes the airflow to be unevenly distributed on the surface of the screen, thereby blowing and pushing the material through the screen.

2. The clogging removal structure according to claim 1, wherein: A limiting groove adapted to the movable rod is opened inside the fixing seat. A spring is arranged inside the limiting groove. One end of the movable rod away from the mounting frame is fixedly connected to the spring.

3. The clogging removal structure according to claim 2, characterized in that: A plurality of ventilation grooves are opened on the surface of the mounting frame. A diversion pipe is arranged at one end of the nozzle close to the mounting frame. A movable card slot adapted to the diversion pipe is opened inside the nozzle.

4. The blockage clearing structure according to claim 3, wherein: A plurality of cleaning components are arranged at intervals on the outside of the fixed frame. The cleaning components include a plurality of nozzles. The plurality of nozzles are arranged at intervals along the length direction of the fixed frame. The spraying direction of the nozzles is perpendicular to the screen.

5. The blockage clearing structure according to claim 4, characterized in that: A rotating seat is arranged on the surface of the mounting frame. A rotating groove is opened at the position where the mounting frame is connected to the rotating seat; there are a plurality of fan blades, and the plurality of fan blades are fixedly arranged on the rotating seat in a ring shape.

6. The clogging clearing structure according to claim 5, characterized in that: The number of the adjusting components is multiple, and the multiple adjusting components are evenly distributed along the circumferential direction of the rotating rod at equal intervals.

7. A sliding type cleaning air sieve, characterized in that: It includes a body component and a clogging clearing structure as described in claim 6. The body component includes a screening bin. A feed bin is arranged at one end of the screening bin. A sealing cover is arranged at the end of the screening bin away from the feed bin. One end of the sealing cover close to the screening bin is fixedly connected to the fixed frame. The support is fixedly arranged at the end of the screening bin close to the sealing cover. Positioning grooves adapted to the fixing seats are opened on the surface of the screening bin.

8. A sliding type cleaning air sieve according to claim 7, characterized in that: An observation window is arranged on the surface of the screening bin, a feed inlet is arranged above the feed bin, a main shaft is arranged inside the feed bin, spiral blades are arranged on the surface of the main shaft, one end of the main shaft is fixedly connected with a rotating rod, and a driving mechanism is arranged at the end of the main shaft far away from the rotating rod.

9. The sliding air sieve for cleaning according to claim 8, wherein: A frame is arranged below the screening bin, a fine material discharge port and a coarse material discharge port are arranged at one end of the screening bin close to the frame, sliding blocks are arranged on both sides of the frame, a sliding rod is arranged inside the sliding block, and one end of the sliding rod is fixedly connected with a sealing cover.

Images