Dust recovery device for corn starch production

Abstract

The invention provides a dust recovery device for corn starch production, and belongs to the technical field of corn starch dust recovery, the dust recovery device comprises a main shell assembly, an inner filter cartridge assembly, a positive and negative pressure switching component, a positive and negative pressure integration assembly and a multi-mode switching assembly, the main shell is of a triangular prism-shaped cavity structure, and a filter cavity is formed by a plurality of groups of automatically rotating filter cartridges in the main shell; the positive and negative pressure switching component is located among the multiple sets of filter cartridges, the inner rotating cylinder can be synchronously communicated with the outer fixing cylinder when the switching ring rotates till the air suction flow guide hopper is communicated with the inner cavities of the filter cartridges, and the inner rotating cylinder synchronously closes the outer fixing cylinder when the switching ring rotates till the air blowing connecting base is communicated with the inner cavities of the filter cartridges. Therefore, not only can the air inlet micropores and the air inlet connecting pipe be used as air inlet ends in a negative pressure adsorption state, but also the air inlet connecting pipe is independently used as air inlet under the cooperation of the multi-mode switching assembly, or the air inlet connecting pipe is communicated with the air inlet micropores in cooperation with the multi-mode switching assembly and the dust collection connecting hole to form a positive pressure air blowing and collecting action.

Description

Technical Field

[0001] The invention relates to the technical field of corn starch dust recovery, and in particular to a dust recovery device for corn starch production. Background Art

[0002] In the process of corn starch processing, a lot of dust will be generated, which mostly comes from the raw corn itself. For corn starch processing machinery and processed products, dust will cause great harm to the processing process and processed products. For operators, dust not only causes inconvenience to operators of corn starch processing machinery, but also affects the respiratory system of operators and threatens human health. Therefore, we need to take measures to control it in production.

[0003] Existing corn starch dust recovery devices are mostly based on fixed-position filter elements, using centrifugal fans to generate negative pressure in the cavity connected to the filter element to absorb dust from the external environment into the filter element; although the purpose of adsorbing and recovering dust can be achieved, since the filter element is in a fixed state, no matter how the structure is optimized, it is easy to form a filtration dead angle, resulting in the filter element being unable to be fully used, resulting in the current situation where a part of the filter element's life ends first. On the other hand, the filter element needs to be disassembled and removed before the next step of corn starch dust recovery can be carried out, which is cumbersome and inefficient. Summary of the invention

[0004] The purpose of the present invention is to provide a dust recovery device for corn starch production. An array of automatically rotatable filter cartridges is arranged in the unique triangular prism-shaped cavity structure formed by the main shell. Combined with the use of positive and negative pressure switching components and multi-mode switching components, multi-channel negative pressure adsorption and positive pressure collection and processing of starch dust can be formed.

[0005] The object of the present invention is achieved through such a technical solution, a dust recovery device for corn starch production, comprising a main shell assembly, an inner filter cartridge assembly, a positive and negative pressure switching component and a multi-mode switching component;

[0006] The main shell assembly includes a main shell and a surrounding sleeve, the inner filter cartridge assembly includes a filter cartridge bottom baffle, a filter cartridge top baffle and a filter cartridge, the positive and negative pressure switching component includes an outer solid cylinder, an air intake connecting pipe and an inner rotating cylinder, and the multi-mode switching component includes a switching sliding sleeve and a dust collecting hopper;

[0007] The main shell is a triangular prism-shaped cavity structure, the surrounding sleeve is fixedly connected to the lower end of the outer wall of the main shell, and the lower end of the outer wall of the main shell is also provided with air inlet micropores. The bottom baffle plate and the top baffle plate of the filter cartridge are fixedly installed in the inner cavity of the main shell, and the filter cartridge is arranged in a circular array between the bottom baffle plate and the top baffle plate of the filter cartridge. The main body of the top baffle plate of the filter cartridge is provided with air holes at a position directly opposite to the filter cartridge.

[0008] The outer fixed cylinder is fixedly connected to the middle part between the bottom baffle plate of the filter cartridge and the top baffle plate of the filter cartridge, the air inlet connecting pipe is connected to the inner lower end of the outer fixed cylinder, the inner rotating cylinder is screwed into the outer fixed cylinder, and the top end of the main body is screwed to the top baffle plate of the filter cartridge, and the top end of the top baffle plate of the filter cartridge is screwed with a switching ring, and the main body of the switching ring is connected in pairs with an air suction guide bucket and an air blowing connection seat, the air suction guide bucket is connected to negative pressure, the air blowing connection seat is connected to positive pressure, and the outer top end of the inner rotating cylinder is fixedly connected to the switching ring, the switching ring can automatically rotate to connect the air suction guide bucket or the air blowing connection seat to the air hole alone, and when the air suction guide bucket is connected to the air hole alone, the inner rotating cylinder synchronously opens the outer fixed cylinder, and when the air blowing connection seat is connected to the air hole alone, the inner rotating cylinder synchronously closes the outer fixed cylinder;

[0009] The annular structure composed of the switching sleeve and the dust collecting hopper is slidably connected to the outer lower side of the main shell, and the inner wall of the dust collecting hopper is provided with dust collecting connection holes, which can form three states: all the air inlet micropores are opened, all are closed, and the dust collecting connection holes are connected with the air inlet micropores.

[0010] The use process of the technical solution of the present invention is as follows:

[0011] In the working state of negative pressure starch dust adsorption, both the air inlet micropores and the air inlet connecting pipe can be used as the inlet of starch dust. The air inlet micropores are in the default fully opened state. The starch dust in the environment can be widely adsorbed through the air inlet micropores. The inlet of the air inlet connecting pipe can be connected to the external pipeline to absorb the starch dust in the local position.

[0012] At this time, the switching ring is rotated to the position where the air suction guide bucket is connected to the air hole, the air blowing connection seat is not connected to the air hole, and the negative pressure is connected to the inner cavity of the filter cartridge, which can form the adsorption and filtration function of the filter cartridge from the outside to the inside;

[0013] The inner rotating cylinder is connected to the outer fixed cylinder, and the external starch dust can enter the inner cavity of the main shell through the air inlet micropores and the air inlet connecting pipe, and be adsorbed by the filter cylinder;

[0014] If the air intake connecting pipe needs to be used alone, the annular structure composed of the sliding sleeve and the dust collecting hopper can be switched upward so that the air intake micropores are completely closed, thereby improving the adsorption capacity of the air intake connecting pipe when used alone.

[0015] In the working state of positive pressure starch dust collection, the switching ring needs to be rotated to the position where the air blowing connection seat is connected to the air hole, the air suction guide bucket is not connected to the air hole, the positive pressure is connected to the inner cavity of the filter cartridge, and the positive pressure blowing operation can be performed to the inner cavity of the filter cartridge;

[0016] And it is necessary to move the annular structure composed of the switching sleeve and the dust collecting hopper to a position where the dust collecting connection hole is connected to the air inlet micropore, and the top opening of the dust collecting hopper just fits with the bottom surface of the surrounding sleeve;

[0017] When the air blowing connection seat is connected to the air hole, the inner rotating cylinder closes the outer fixed cylinder, and the air intake pipe is cut off from the filter cavity of the filter cylinder. When positive pressure air is blown into the inner cavity of the filter cylinder, the starch dust adsorbed on the outer surface of the filter cylinder is connected to the outside only through the opposite air intake micropores and dust collecting holes. As the positive pressure blowing is operated, the starch dust will be collected in the dust collecting hopper.

[0018] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0019] (1) The purpose of designing the main housing into a triangular prism-shaped cavity structure in the present invention is to arrange three groups of filter cartridges in its inner cavity, save space as much as possible, and improve the space utilization efficiency of the main housing;

[0020] (2) The present invention sets the filter cartridge located between the bottom baffle plate of the filter cartridge and the top baffle plate of the filter cartridge to be automatically rotatable, so that all the outer surfaces of the filter cartridge can be evenly connected with the air inlet micropores and the through holes of the outer solid cartridge, thereby eliminating the dead angle of filtration adsorption and improving the adsorption efficiency and service life of the filter cartridge;

[0021] (3) The present invention not only has air inlet micropores in the side wall of the main shell, but also has an inner rotating cylinder and an outer fixed cylinder that are screwed and plugged in between the bottom baffle of the filter cartridge and the top baffle of the filter cartridge, so that when the switching ring is rotated to a position where the air suction guide bucket is connected to the air hole and the inner cavity of the filter cartridge, the inner rotating cylinder is just connected to the outer fixed cylinder, thereby forming a state in which the air inlet micropores and the air inlet connecting pipe connected to the inner bottom end of the outer fixed cylinder both serve as starch dust suction ports. The purpose is to cooperate with the multi-mode switching component to open and close the air inlet micropores, so as to form a working state in which the air inlet micropores and the air inlet connecting pipe are used together or the air inlet connecting pipe is used alone, which is suitable for different use environments;

[0022] (4) The switching ring of the present invention can also be rotated to a position where the air blowing connection seat is in direct connection with the air hole. Synchronously, the inner rotating cylinder closes the outer fixed cylinder, and cooperates with the multi-mode switching component to move the dust collecting hole to a position where it is in direct connection with the air inlet micropore. The inner cavity of the dust collecting hopper can be connected to the filter cavity formed by the filter cylinder in the main shell, thereby forming a positive pressure working state, and collecting the starch dust adsorbed on the outside of the filter cylinder into the dust collecting hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the main shell assembly of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the main housing part of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the inner filter cartridge assembly of the present invention from a first viewing angle;

[0028] Figure 5 It is a structural schematic diagram of the inner filter cartridge assembly of the present invention from a second viewing angle;

[0029] Figure 6 It is a structural schematic diagram of the positive and negative pressure switching component of the present invention from a first perspective;

[0030] Figure 7 It is a structural schematic diagram of the positive and negative pressure switching component of the present invention from a second viewing angle;

[0031] Figure 8 It is a schematic diagram of the explosion structure of the switching ring part of the present invention;

[0032] Fig. 9 It is a schematic diagram of the explosion structure of the positive and negative pressure integrated component of the present invention;

[0033] Fig.10 It is a structural schematic diagram of the fan interface and the flared air guide cover of the present invention;

[0034] Fig.11 It is a schematic structural diagram of the exhaust channel part of the present invention;

[0035] Fig.12 This is a schematic diagram of the structure of the multi-mode switching component of the present invention from a first perspective;

[0036] Fig.13 This is a structural schematic diagram of the multi-mode switching component of the present invention from a second viewing angle;

[0037] Fig.14 It is a structural schematic diagram of the dust collecting hopper part of the present invention.

[0038] Reference numerals:

[0039] 1. Main shell assembly; 2. Inner filter cartridge assembly; 3. Positive and negative pressure switching component; 4. Positive and negative pressure integrated assembly; 5. Multi-mode switching assembly; 101. Main shell; 102. Base frame; 103. Casters; 104. Top cover; 105. Bottom cover; 106. Main control panel; 107. Sleeve; 108. Air inlet micropores; 201. Filter cartridge bottom baffle; 202. Filter cartridge top baffle; 203. Filter cartridge; 204. Air hole; 205 , upper sleeve; 206, upper socket; 207, thrust bearing; 208, rotating seat; 209, rotating shaft; 210, rotating gear; 211, central gear; 212, rotating motor; 213, driving gear; 214, hexagonal head; 215, hexagonal socket; 216, central seat; 301, outer fixed cylinder; 302, air intake connecting pipe; 303, inner cylinder rotating seat; 304, inner rotating cylinder; 305, inner cylinder rotating shaft; 306, Switching slot; 307, switching ring; 308, Y-shaped frame; 309, air suction guide bucket; 310, air blowing connection seat; 311, electric cylinder fixed rotary seat; 312, telescopic electric cylinder; 313, electric cylinder dynamic rotary seat; 401, integrated partition; 402, centrifugal fan; 403, fan interface; 404, expanded guide cover; 405, air blowing integrated pipe seat; 406, connecting hose; 407, air blowing integrated pipe; 408, exhaust channel; 409, side cover; 410, exhaust port filter; 501, switching sleeve; 502, screw top seat; 503, screw base; 504, switching screw; 505, screw slider; 506, dust hopper; 507, dust collection connection hole; 508, external oblique pipe; 509, transmission toothed belt pulley; 510, transmission toothed belt; 511, servo motor; 512, driving toothed belt pulley; 513, rotating toothed belt pulley; 514, connecting toothed belt. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] like Figure 1-Figure 14 A dust recovery device for corn starch production is shown; the main shell 101 in the main shell assembly 1 is a triangular prism-shaped cavity structure, the surrounding sleeve 107 is fixedly connected to the lower end of the outer wall of the main shell 101, and the lower end of the outer wall of the main shell 101 is also provided with an air intake micropore 108, and the air intake micropore 108 is located below the surrounding sleeve 107, the filter cartridge bottom baffle 201 and the filter cartridge top baffle 202 are both fixedly installed in the inner cavity of the main shell 101, and the filter cartridge top baffle 202 is located above the filter cartridge bottom baffle 201, the filter cartridge 203 is arranged in a circular array between the filter cartridge bottom baffle 201 and the filter cartridge top baffle 202, and can rotate automatically, and the filter cartridge top baffle 202 has an air hole 204 in the main body of the filter cartridge top baffle 202 at a position directly opposite to the filter cartridge 203;

[0043] The outer solid cylinder 301 is fixedly connected to the middle part between the bottom baffle plate 201 of the filter cartridge and the top baffle plate 202 of the filter cartridge, the air inlet connecting pipe 302 is connected to the inner lower end of the outer solid cylinder 301, the inner rotating cylinder 304 is screwed into the outer solid cylinder 301, and the top of the main body is screwed to the top baffle plate 202 of the filter cartridge, and the top of the top baffle plate 202 of the filter cartridge is screwed with a switching ring 307, and the main body of the switching ring 307 is connected in pairs with an air suction guide hopper 309 and an air blowing connection seat 310, the air suction guide hopper 309 is connected to the negative pressure, and the air blowing connection The connection seat 310 is connected to the positive pressure, and the outer top of the inner rotating cylinder 304 is fixedly connected to the switching ring 307. The switching ring 307 can rotate automatically to connect the air suction guide hopper 309 or the air blowing connection seat 310 to the air hole 204 alone. When the air suction guide hopper 309 is connected to the air hole 204 alone, the inner rotating cylinder 304 synchronously opens the outer fixed cylinder 301. When the air blowing connection seat 310 is connected to the air hole 204 alone, the inner rotating cylinder 304 synchronously closes the outer fixed cylinder 301.

[0044] The annular structure composed of the switching sleeve 501 and the dust collecting hopper 506 is slidably connected to the outer lower side of the main shell 101 and can slide automatically. The inner wall of the dust collecting hopper 506 is provided with a dust collecting connection hole 507, which can form three states: the air inlet micropores 108 are all opened, the air inlet micropores 108 are all closed, and the dust collecting connection hole 507 is connected with the air inlet micropores 108.

[0045] Here’s how it works:

[0046] The device can form negative pressure starch dust adsorption and positive pressure starch dust collection functions;

[0047] The filter cartridge 203 is a functional body for absorbing starch dust. The filter material of the filter cartridge 203 is a folded structure, which can increase the absorption efficiency per unit area.

[0048] In the working state of negative pressure starch dust adsorption, the air inlet micropores 108 and the air inlet connecting pipe 302 can both be used as the inlet of starch dust. The air inlet micropores 108 are in the default fully opened state. The starch dust in the environment can be widely adsorbed through the air inlet micropores 108. The inlet of the air inlet connecting pipe 302 can be connected to an external pipeline to absorb starch dust at a local position.

[0049] At this time, the switching ring 307 is rotated to the position where the air suction guide 309 is connected to the air hole 204, the air blowing connection seat 310 is not connected to the air hole 204, and the negative pressure is connected to the inner cavity of the filter cartridge 203, so that the filter cartridge 203 can form an adsorption and filtration function from the outside to the inside;

[0050] Since the inner rotating cylinder 304 is connected to the outer fixed cylinder 301 at this moment, the external starch dust can enter the inner cavity of the main housing 101 through the air inlet micropores 108 and the air inlet connecting pipe 302, and be adsorbed by the filter cylinder 203;

[0051] When the air intake connecting pipe 302 needs to be used alone to increase the adsorption capacity of the air intake connecting pipe 302, the annular structure composed of the sliding sleeve 501 and the dust collecting hopper 506 can be switched upward so that the air intake micropores 108 are completely closed, thereby improving the adsorption capacity of the air intake connecting pipe 302 when used alone;

[0052] In the working state of positive pressure starch dust collection, the switching ring 307 needs to be rotated to the position where the blowing connection seat 310 is connected to the air hole 204, the air suction guide 309 is not connected to the air hole 204, the positive pressure is connected to the inner cavity of the filter cartridge 203, and the positive pressure blowing operation can be performed on the inner cavity of the filter cartridge 203;

[0053] At this time, the annular structure composed of the switching sleeve 501 and the dust collecting hopper 506 needs to be moved to a position where the dust collecting connection hole 507 is connected to the air inlet micropore 108, and the top opening of the dust collecting hopper 506 just fits with the bottom surface of the surrounding sleeve 107;

[0054] When the air blowing connection seat 310 is connected to the air hole 204, the inner rotating cylinder 304 closes the outer fixed cylinder 301, and the air intake pipe 302 is cut off from the filter cavity of the filter cylinder 203, so that when positive pressure air is blown into the inner cavity of the filter cylinder 203, the starch dust adsorbed on the outer surface of the filter cylinder 203 is connected to the outside only through the opposite air intake micropores 108 and the dust collecting hole 507. As the positive pressure blowing is operated, the starch dust will be collected in the dust collecting hopper 506.

[0055] The specific structure of the main housing assembly 1 and the inner filter cartridge assembly 2 is as follows: Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a top cover 104 is fixedly connected to the top opening of the main housing 101, and a bottom cover 105 is fixedly connected to the bottom opening;

[0056] The base frame 102 is fixedly connected to the corner of the bottom end of the main housing 101, and the casters 103 are installed and fixed to the bottom end of the base frame 102, which can facilitate the movement of the main housing 101;

[0057] A main control board 106 is also mounted on the top surface of the bottom cover 105;

[0058] The upper plug sleeve 205 is fixedly connected to the bottom surface of the filter cartridge top partition 202 and the position directly opposite to the air hole 204. The top of the filter cartridge 203 is fixed with an upper socket 206, and the upper socket 206 is rotatably connected in the upper plug sleeve 205 through a thrust bearing 207.

[0059] A center seat 216 is fixed to the middle of the bottom end of the filter cartridge bottom baffle 201, and a center gear 211 is rotatably connected to the outside of the center seat 216. The air intake connecting pipe 302 passes through the middle of the main body of the main control board 106 and is fixed to the inner hole of the center seat 216 to form a connection with the inside of the outer solid cylinder 301. A rotating seat 208 is fixed to the top surface of the bottom cover 105 in a circumferential array. A rotating shaft 209 is rotatably connected in each group of rotating seats 208. The rotating gear 210 is plugged and fixed to the outside of the rotating shaft 209 and meshes with the center gear 211. A rotating motor 212 is also installed and fixed to the top surface of the bottom cover 105. A driving gear 213 is plugged and fixed in the rotating shaft of the rotating motor 212, and the driving gear 213 meshes with the center gear 211.

[0060] The hexagonal head 214 is fixedly connected to the top of the rotating shaft 209, and the hexagonal socket 215 is fixedly connected to the outer bottom end of the filter cartridge 203. The hexagonal socket 215 can be inserted into the hexagonal head 214 after passing through the filter cartridge bottom partition 201;

[0061] The rotating motor 212 is electrically connected to the main control board 106. The rotating motor 212 is started to drive the driving gear 213 to rotate, so that the driving gear 213 can drive the rotating gear 210 to rotate through the matching rotation formed with the central gear 211, so that the rotating shaft 209 drives the filter cartridge 203 to rotate through the plug-in matching formed by the hexagonal head 214 and the hexagonal socket 215;

[0062] The purpose of providing a hexagonal socket 215 at the bottom end of the filter cartridge 203 for plugging and matching with the hexagonal head 214 is to facilitate the disassembly and assembly of the filter cartridge 203 after the service life ends.

[0063] The specific structure of the positive and negative pressure switching component 3 is as follows: Figure 6 , Figure 7 and Figure 8 As shown, the inner cylinder rotary seat 303 is fixedly installed in the middle of the main body of the filter cartridge top baffle 202, the inner cylinder rotary shaft 305 is fixed in the middle of the outer top of the inner rotary cylinder 304, the inner cylinder rotary shaft 305 is rotatably connected in the inner cylinder rotary seat 303, the middle of the main body of the Y-shaped frame 308 is fixedly connected to the inner cylinder rotary shaft 305, and the outer end of the main body is fixedly connected to the top surface of the switching ring 307;

[0064] The top surface of the filter cartridge top baffle 202 is fixedly connected with a switching groove 306, and the switching ring 307 is rotatably connected in the switching groove 306, and the bottom surface of the switching ring 307 is in contact with the top surface of the filter cartridge top baffle 202;

[0065] An electric cylinder fixed rotating seat 311 is also fixed to one side of the top surface of the filter cartridge top partition 202, the rear end of the main body of the telescopic electric cylinder 312 is rotatably connected to the electric cylinder fixed rotating seat 311, the electric cylinder movable rotating seat 313 is fixedly connected to the outer end of the Y-shaped frame 308, and the front end of the telescopic rod of the telescopic electric cylinder 312 is rotatably connected to the electric cylinder movable rotating seat 313;

[0066] Through holes are provided in the walls of the outer fixed cylinder 301 and the inner rotating cylinder 304, so that as the inner rotating cylinder 304 rotates, the through holes of the inner rotating cylinder 304 are aligned with the through holes of the outer fixed cylinder 301, or are closed to each other, so that the inner rotating cylinder 304 can open and close the outer fixed cylinder 301;

[0067] The telescopic electric cylinder 312 is electrically connected to the main control board 106. Through the movement of the telescopic rod of the telescopic electric cylinder 312, the rotational connection formed by the telescopic rod of the telescopic electric cylinder 312 and the movable rotating seat 313 of the electric cylinder, and the rotational connection formed by the main body of the telescopic electric cylinder 312 and the fixed rotating seat 311 of the electric cylinder, the switching ring 307 and the inner rotating cylinder 304 connected to the switching ring 307 through the Y-shaped frame 308 can be rotated within a certain range, so that after the switching ring 307 is rotated to the position where the air suction guide bucket 309 is connected to the air hole 204, the inner rotating cylinder 304 is synchronously connected to the outer fixed cylinder 301 and opened. Conversely, after the switching ring 307 is rotated to the position where the air blowing connecting seat 310 is connected to the air hole 204, the inner rotating cylinder 304 synchronously closes the outer fixed cylinder 301.

[0068] The specific structure of the positive and negative pressure integrated component 4 is as follows Fig. 9 , Fig.10 and Fig.11 As shown, the integrated partition 401 is fixedly connected to the upper end of the inner cavity of the main shell 101 and is located above the top partition 202 of the filter cartridge. The centrifugal fan 402 is fixedly installed on the bottom surface of the top cover 104. A fan interface 403 is fixed to the middle top surface of the integrated partition 401, and a flared air guide hood 404 is fixed to the middle bottom surface. The fan interface 403 is connected to the flared air guide hood 404, and the fan interface 403 extends into the air inlet of the centrifugal fan 402 to guide the centrifugal fan 402, and the flared air guide hood 404 with the flared structure improves the effect of negative pressure adsorption.

[0069] An air blowing integrated pipe seat 405 is fixedly installed in a circumferential array in the main body of the integrated partition 401. One end of the connecting hose 406 is connected to the air blowing connecting seat 310, and the other end is connected to the air blowing integrated pipe seat 405. The top of the integrated partition 401 is also provided with an air blowing integrated pipe 407 with a one-inlet and multiple-outlet structure. The inlet of the air blowing integrated pipe 407 passes through the side wall of the main shell 101 and is connected to the external positive pressure air supply device. In the working state of positive pressure starch dust collection, the air blowing integrated pipe 407 can be provided with dried positive pressure air;

[0070] The outlets of the air blowing integrated pipe 407 are respectively connected to the air blowing integrated pipe seats 405 at different positions;

[0071] Since the connecting hose 406 is made of soft material, it will not interfere with the rotation of the switching ring 307 within a certain range;

[0072] An exhaust passage 408 is also fixedly connected to the upper end of the outer wall of the main housing 101, an air outlet of the centrifugal fan 402 is connected to the inner end of the exhaust passage 408, an exhaust port filter 410 is placed in the exhaust passage 408, and a side cover plate 409 is covered at the outer end opening of the exhaust passage 408;

[0073] The centrifugal fan 402 is electrically connected to the main control board 106, and can be started to form a negative pressure that flows through the expanded guide cover 404 to the fan interface 403, thereby providing negative pressure to the inner cavity of the filter cartridge 203 through the air suction guide 309 that is positively connected to each group of air holes 204, thereby forming a filtering and adsorption effect of the filter cartridge 203.

[0074] The specific structure of the multi-mode switching component 5 is as follows: Fig.12 , Fig.13 and Fig.14 As shown, the lead screw top seats 502 are fixedly installed in a circular array at the top of the main body of the surrounding sleeve 107, and the lead screw base 503 is fixed at the lower end of the outer wall of the main housing 101 and at a position directly opposite to each group of lead screw top seats 502. The top end of the switching lead screw 504 is rotatably connected to the lead screw top seat 502, and the bottom end is rotatably connected to the lead screw base 503. The lead screw slider 505 is installed and fixed on the outer side of the switching sleeve 501, and is matched and connected to the switching lead screw 504.

[0075] The bottom ends of adjacent switching lead screws 504 are connected in sequence through a rotating transmission mechanism formed by a transmission toothed belt 509 and a transmission toothed belt 510, so that when one set of switching lead screws 504 rotates, the other switching lead screws 504 can rotate synchronously and in the same direction. A rotating toothed belt wheel 513 is also fixed to the bottom end of one set of switching lead screws 504. A servo motor 511 is fixedly mounted on the outer bottom surface of the bottom cover 105. A driving toothed belt wheel 512 is inserted and fixed in the rotating shaft of the servo motor 511. A connecting toothed belt 514 is sleeved and installed between the driving toothed belt wheel 512 and the rotating toothed belt wheel 513.

[0076] The servo motor 511 is electrically connected to the main control board 106. After the servo motor 511 is started to drive the driving toothed belt wheel 512 to rotate, the driving toothed belt wheel 512 can drive the rotation of the rotating toothed belt wheel 513 through the connecting toothed belt 514, so that the rotating transmission mechanism composed of the transmission toothed belt wheel 509 and the transmission toothed belt 510 can drive the array switching lead screw 504 to rotate synchronously and in the same direction, and the transmission cooperation formed by each switching lead screw 504 and the lead screw slider 505 can drive the ring structure composed of the switching sleeve 501 and the dust collecting bucket 506 to move stably;

[0077] The row spacing of the air inlet micropores 108 opened on the side wall of the main shell 101 is equal to the row spacing of the dust collecting connection holes 507 opened on the inner side wall of the dust collecting hopper 506, and they are connected one by one and face each other after being equal in height, and the row spacing between each row of air inlet micropores 108 is larger than the aperture of the air inlet micropores 108, and the row spacing between each row of dust collecting connection holes 507 is larger than the aperture of the dust collecting connection holes 507, so as to form a partition wall surface of sufficient size, so that the switching sleeve 501 and the dust collecting hopper 506 can move the dust collecting connection holes 507 and the air inlet micropores 108 to a position where they are closed to each other;

[0078] The dust hopper 506 is a top opening structure, and a sealing gasket facing the dust hopper 506 is installed on the bottom surface of the surrounding sleeve 107, which not only seals the dust hopper 506 and the surrounding sleeve 107 when the dust hopper 506 is moved to a position where the dust collection connection hole 507 is connected to the air inlet micropore 108, but also facilitates the operator to clean the starch dust through the top opening of the dust hopper 506 after the starch dust is collected in the dust hopper 506.

[0079] The bottom end of the outer side surface of the dust hopper 506 is connected to a downwardly inclined external inclined tube 508, and the external inclined tube 508 is connected to the inner cavity of the dust hopper 506. In the working state of positive pressure starch dust collection, the fabric bag for collecting starch dust can be tied to the outlet of the external inclined tube 508, so that the starch dust can be conveniently passed into the fabric bag connected to the external inclined tube 508 through the dust hopper 506 as a channel.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dust recovery device for corn starch production, comprising a main housing assembly (1), characterized in that: It also includes an inner filter cartridge assembly (2), a positive and negative pressure switching component (3) and a multi-mode switching assembly (5); The main housing assembly (1) comprises a main housing (101) and a surrounding sleeve (107), wherein the surrounding sleeve (107) is fixedly connected to the lower end of the outer wall of the main housing (101), and the inner filter cartridge assembly (2) comprises a filter cartridge bottom baffle (201), a filter cartridge top baffle (202) and a filter cartridge (203), wherein the filter cartridge bottom baffle (201) and the filter cartridge top baffle (202) are both fixedly installed in the inner cavity of the main housing (101), and the filter cartridge (203) is arranged in a circular array on the filter cartridge bottom baffle (201). ) and the top baffle plate (202) of the filter cartridge, the positive and negative pressure switching component (3) comprises an outer fixed cylinder (301), an air intake connecting pipe (302) and an inner rotating cylinder (304), the outer fixed cylinder (301) is fixedly connected to the middle part between the bottom baffle plate (201) of the filter cartridge and the top baffle plate (202) of the filter cartridge, the air intake connecting pipe (302) is connected to the inner lower end of the outer fixed cylinder (301), the inner rotating cylinder (304) is screwed into the outer fixed cylinder (301), and the top end of the main body is screwed to the top baffle plate (202) of the filter cartridge; The lower end of the outer wall of the main shell (101) is also provided with an air inlet micropore (108), and an air hole (204) is provided in the main body of the filter cartridge top baffle (202) at a position directly opposite to the filter cartridge (203). A switching ring (307) is screwed on the top of the filter cartridge top baffle (202), and a pair of suction guide hoppers (309) and blowing connection seats (310) are connected in the main body of the switching ring (307). The suction guide hopper (309) is connected to negative pressure, and the blowing connection seat (310) is connected to positive pressure. The inner rotating cylinder ( The outer top of the inner tube (304) is fixedly connected to the switching ring (307), and the switching ring (307) can rotate automatically to connect the air suction guide hopper (309) or the air blowing connection seat (310) to the air hole (204) alone, and when the air suction guide hopper (309) is connected to the air hole (204) alone, the inner rotating cylinder (304) synchronously opens the outer fixed cylinder (301), and when the air blowing connection seat (310) is connected to the air hole (204) alone, the inner rotating cylinder (304) synchronously closes the outer fixed cylinder (301); The multi-mode switching assembly (5) comprises a switching sleeve (501) and a dust collecting hopper (506). The switching sleeve (501) and the dust collecting hopper (506) form an annular structure which is slidably connected to the outer lower side of the main housing (101). The inner side wall of the dust collecting hopper (506) is provided with a dust collecting hole (507).

2. A dust recovery device for corn starch production according to claim 1, characterized in that: The main shell assembly (1) also includes a bottom frame (102); a top cover (104) is fixedly connected to the top opening of the main shell (101); a bottom cover (105) is fixedly connected to the bottom opening; and the bottom frame (102) is fixedly connected to the corner of the bottom end of the main shell (101).

3. A dust recovery device for corn starch production according to claim 2, characterized in that: The inner filter cartridge assembly (2) further comprises an upper sleeve (205), a thrust bearing (207), a rotating shaft (209), a rotating gear (210), a central gear (211), a hexagonal head (214) and a hexagonal socket (215); the upper sleeve (205) is fixedly connected to the bottom surface of the filter cartridge top baffle (202); an upper socket (206) is fixed to the top of the filter cartridge (203); the upper socket (206) is rotatably connected to the upper sleeve (205) via the thrust bearing (207); a central seat (216) is fixed to the middle of the bottom end of the filter cartridge bottom baffle (201); the central gear (211) is rotatably connected to the outside of the central seat (216); an air intake connecting pipe (302) passes through the middle of the main body of the main control board (106) and is fixed to the inner hole of the central seat (216); a bottom cover ( The top surface of the bottom cover (105) is fixed with rotating seats (208) in a circular array, each group of rotating seats (208) is rotatably connected with a rotating shaft (209), and the rotating gears (210) are plugged and fixed outside the rotating shaft (209) and meshed with the central gear (211). The top surface of the bottom cover (105) is also installed with a rotating motor (212), and a driving gear (213) is plugged and fixed in the rotating shaft of the rotating motor (212), and the driving gear (213) is meshed with the central gear (211). The hexagonal head (214) is fixedly connected to the top of the rotating shaft (209), and the hexagonal socket (215) is fixedly connected to the outer bottom end of the filter cartridge (203). The hexagonal socket (215) can be inserted into the hexagonal head (214) after passing through the bottom partition (201) of the filter cartridge.

4. A dust recovery device for corn starch production according to claim 1, 2 or 3, characterized in that: The positive and negative pressure switching member (3) further comprises an inner cylinder rotating seat (303), a Y-shaped frame (308), a telescopic electric cylinder (312) and an electric cylinder movable rotating seat (313); the inner cylinder rotating seat (303) is fixedly mounted on the middle part of the main body of the filter cartridge top baffle (202); an inner cylinder rotating shaft (305) is fixedly mounted on the middle part of the outer top of the inner rotating cylinder (304); the inner cylinder rotating shaft (305) is rotatably connected to the inner cylinder rotating seat (303); the middle part of the main body of the Y-shaped frame (308) is fixedly connected to the inner cylinder rotating shaft (305); the outer end of the main body is connected to the switching ring (307) The top surface of the filter cartridge top baffle (202) is fixedly connected, the top surface of the filter cartridge top baffle (202) is fixedly connected with a switching groove (306), the switching ring (307) is rotatably connected in the switching groove (306), an electric cylinder fixed rotating seat (311) is also fixed on one side of the top surface of the filter cartridge top baffle (202), the rear end of the main body of the telescopic electric cylinder (312) is rotatably connected in the electric cylinder fixed rotating seat (311), the electric cylinder movable rotating seat (313) is fixedly connected to the outer end of the Y-shaped frame (308), and the front end of the telescopic rod of the telescopic electric cylinder (312) is rotatably connected to the electric cylinder movable rotating seat (313).

5. A dust recovery device for corn starch production according to claim 3, characterized in that: The multi-mode switching assembly (5) further comprises a screw top seat (502), a switching screw (504), a screw slider (505), a transmission toothed belt pulley (509) and a transmission toothed belt (510). The screw top seat (502) is fixedly mounted in a circular array on the top of the main body of the surrounding sleeve (107). A screw base (503) is fixed at a position opposite to each group of screw top seats (502) at the lower end of the outer wall of the main housing (101). The top end of the switching screw (504) is rotatably connected to the screw top seat (502), and the bottom end is rotatably connected to the screw base (503). The screw slider (505) is fixedly mounted on the switching screw The outer side surface of the switching sleeve (501) is matched and connected in the switching lead screw (504), and the bottom ends of adjacent switching lead screws (504) are connected in sequence through a transmission toothed belt wheel (509) and a rotation transmission mechanism formed by a transmission toothed belt wheel (510), wherein a rotating toothed belt wheel (513) is also fixed to the bottom end of one group of switching lead screws (504), a servo motor (511) is installed and fixed on the outer bottom surface of the bottom cover (105), a driving toothed belt wheel (512) is inserted and fixed in the rotating shaft of the servo motor (511), and a connecting toothed belt (514) is installed and sleeved between the driving toothed belt wheel (512) and the rotating toothed belt wheel (513).

6. A dust recovery device for corn starch production according to claim 1, 2, 3 or 5, characterized in that: The row spacing of the air intake micropores (108) opened on the side wall of the main shell (101) is equal to the row spacing of the dust collecting connection holes (507) opened on the inner wall of the dust collecting hopper (506), and they are connected one by one and face each other after being at the same height, and the row spacing between each row of air intake micropores (108) is greater than the aperture of the air intake micropores (108), and the row spacing between each row of dust collecting connection holes (507) is greater than the aperture of the dust collecting connection holes (507).

7. A dust recovery device for corn starch production according to claim 1, 2, 3 or 5, characterized in that: The dust collecting hopper (506) is a top opening structure, and a sealing gasket is installed on the bottom surface of the surrounding sleeve (107).

8. A dust recovery device for corn starch production according to claim 1, 2, 3 or 5, characterized in that: The bottom end of the outer side surface of the dust collecting hopper (506) is connected to an externally connected inclined tube (508).

9. A dust recovery device for corn starch production according to claim 2, 3 or 5, characterized in that: A positive and negative pressure integrated component (4) is also installed at the inner top of the main shell (101), and the positive and negative pressure integrated component (4) includes an integrated baffle (401), a centrifugal fan (402), a connecting hose (406), a side cover (409) and an exhaust port filter element (410). The integrated baffle (401) is fixedly connected to the upper end of the inner cavity of the main shell (101), and the centrifugal fan (402) is fixedly installed on the bottom surface of the top cover (104). A fan interface (403) is fixed to the middle top surface of the integrated baffle (401), and an expanded air guide cover (404) is fixed to the middle bottom surface. The fan interface (403) is connected to the expanded air guide cover (404), and the fan interface (403) extends into the air inlet of the centrifugal fan (402). A blower is fixed in a circular array in the main body of the integrated baffle (401). An air integrated pipe seat (405) is provided, one end of the connecting hose (406) is connected to the air blowing connection seat (310), and the other end is connected to the air blowing integrated pipe seat (405). The top of the integrated baffle (401) is also provided with an air blowing integrated pipe (407). The inlet of the air blowing integrated pipe (407) passes through the side wall of the main shell (101) and is connected to an external positive pressure air supply device. The outlet of the air blowing integrated pipe (407) is respectively connected to the air blowing integrated pipe seats (405) at different positions. The upper end of the outer wall of the main shell (101) is also fixedly connected with an exhaust channel (408). The air outlet of the centrifugal fan (402) is connected to the inner end of the exhaust channel (408). The exhaust port filter (410) is placed in the exhaust channel (408), and the side cover plate (409) is covered at the outer end opening of the exhaust channel (408).

Images