A dust recovery device for corn starch production

Abstract

The present invention provides a dust recovery device for corn starch production, which belongs to the technical field of corn starch dust recovery, and comprises a main shell assembly, an inner filter cartridge assembly, a positive and negative pressure switching component, a positive and negative pressure integrated component and a multi-mode switching component. The main shell is a triangular prism-shaped cavity structure, in which a filter cavity is formed by multiple groups of automatically rotating filter cartridges. The positive and negative pressure switching component is located between the arrays of filter cartridges. When the switching ring rotates to the point where the air suction guide bucket is connected to the inner cavity of the filter cartridge, the inner rotating cartridge is synchronously connected to the outer solid cartridge. When the switching ring rotates to the point where the air blowing connecting seat is connected to the inner cavity of the filter cartridge, the inner rotating cartridge synchronously closes the outer solid cartridge, thereby not only forming a negative pressure adsorption state, in which both the air intake micropores and the air intake connecting pipe are used as air intake ends, but also, with the cooperation of the multi-mode switching component, the air intake connecting pipe is used alone as air intake, or, in cooperation with the multi-mode switching component, the dust collection connection hole is connected to the air intake micropores to form a positive pressure blowing collection action.

Description

Technical Field

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

[0002] The corn starch processing process generates a significant amount of dust, much of which originates from the raw corn itself. Dust can be extremely harmful to both the process and the finished product. For operators, dust not only causes inconvenience but also affects their respiratory system, posing a health risk. Therefore, measures must be taken to control dust during production.

[0003] Existing corn starch dust recovery devices often rely on fixed filter elements. They utilize a centrifugal fan to generate negative pressure within the cavity connected to the filter element, drawing dust from the external environment into the filter element. While this system achieves dust recovery, the fixed nature of the filter element makes it prone to creating filtration dead zones, regardless of structural optimization. This results in the filter element not being fully utilized, leading to premature end-of-life of certain parts of the filter element. Furthermore, the filter element must be removed before proceeding to the next corn starch dust recovery process, making the process 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. In the unique triangular prism-shaped cavity structure formed by the main shell, an array of automatically rotating filter cartridges is arranged. 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 treatment 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 housing assembly, an inner filter cartridge assembly, a positive and negative pressure switching component, and a multi-mode switching assembly;

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

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

[0008] The outer fixed cylinder is fixedly connected to the middle part between the bottom partition of the filter cartridge and the top partition of the filter cartridge, the air intake 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 partition of the filter cartridge, and the top end of the top partition of the filter cartridge is screwed to a switching ring, and the main body of the switching ring is connected in pairs with an intake guide bucket and a blowing connection seat, the intake guide bucket is connected to negative pressure, and the 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, and the switching ring can automatically rotate to connect the intake guide bucket or the blowing connection seat with the air through hole alone, and when the intake guide bucket is connected to the air through hole alone, the inner rotating cylinder synchronously opens the outer fixed cylinder, and when the blowing connection seat is connected to the air through 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. The inner wall of the dust collecting hopper is provided with a dust collecting connection hole, which can form three states: all the air intake micropores are opened, all are closed, and the dust collecting connection hole is connected to the air intake micropores.

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

[0011] In the negative pressure starch dust adsorption working state, 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 open state, and 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 an external pipeline to absorb starch dust in a 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 upwards 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 blowing connection seat is connected to the air hole, the suction guide hopper 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 on 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 the position where the dust collecting connection hole is connected to the air inlet micropore, and the top opening of the dust collecting hopper is just in contact 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 is to arrange three sets of filter cartridges in its inner cavity, thereby saving space as much as possible and improving the space utilization efficiency of the main housing;

[0020] (2) The present invention sets the filter cartridge located between the bottom baffle plate and the top baffle plate of the filter cartridge to a state in which it can rotate automatically, 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 and 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 in and matched between the bottom partition of the filter cartridge and the top partition of the filter cartridge. When the switching ring is rotated to the position where the air inlet 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 pipe 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, forming 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 usage 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 connection 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

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

[0025] Figure 2 Schematic diagram of the structure of the main housing assembly of the present invention;

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

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

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

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

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

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

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

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

[0034] Figure 11 It is a schematic structural diagram of the exhaust channel portion of the present invention;

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

[0036] Figure 13 This is a schematic structural diagram of the multi-mode switching component of the present invention from a second perspective;

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

[0038] Reference numerals:

[0039] 1. Main housing assembly; 2. Inner filter cartridge assembly; 3. Positive and negative pressure switching member; 4. Positive and negative pressure integrated assembly; 5. Multi-mode switching assembly; 101. Main housing; 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, 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 scoop; 310, air blowing connection seat; 311, electric cylinder fixed rotary seat; 312, telescopic electric cylinder; 313, electric cylinder movable rotary seat; 401, integrated partition; 402, centrifugal fan; 403, fan interface; 404, flared air guide cover; 405, air blowing integrated pipe seat; 406, connecting hose; 407, air blowing integrated pipe; 408, exhaust duct; 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 inclined 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] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall 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," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-14 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 further provided with an air intake micropore 108, and the air intake micropore 108 is located below the surrounding sleeve 107. The filter cartridge bottom partition 201 and the filter cartridge top partition 202 are both fixedly installed in the inner cavity of the main shell 101, and the filter cartridge top partition 202 is located above the filter cartridge bottom partition 201. The filter cartridge 203 is arranged in a circular array between the filter cartridge bottom partition 201 and the filter cartridge top partition 202 and can rotate automatically. The main body of the filter cartridge top partition 202 is provided with an air hole 204 at a position directly opposite the filter cartridge 203;

[0043] The outer solid cylinder 301 is fixedly connected to the middle part between the bottom partition plate 201 of the filter cartridge and the top partition 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 partition plate 202 of the filter cartridge, the top of the top partition plate 202 of the filter cartridge is screwed with a switching ring 307, the main body of the switching ring 307 is connected in pairs with an air suction guide hopper 309 and a blowing connection seat 310, the air suction guide hopper 309 is connected to the negative pressure, and the blowing connection The connection seat 310 is connected to the positive pressure, and the outer top end 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. 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 intake micropores 108 are all opened, the air intake micropores 108 are all closed, and the dust collecting connection hole 507 and the air intake micropores 108 are connected.

[0045] Here’s how it works:

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

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

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

[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, and the air blowing connection seat 310 is disconnected from the air hole 204. The negative pressure is connected to the inner cavity of the filter cartridge 203, which can form an adsorption and filtration function of the filter cartridge 203 from the outside to the inside.

[0050] Since the inner rotating cylinder 304 is now connected to the outer fixed cylinder 301, the external starch dust can enter the inner cavity of the main shell 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 suction guide 309 is not connected to the air hole 204, and the positive pressure is connected to the inner cavity of the filter cartridge 203, so that 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 is just in contact 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 shell component 1 and the inner filter cartridge component 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 at a position opposite to the air hole 204. The top of the filter cartridge 203 is fixed with an upper socket 206, which is rotatably connected to 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 partition 201, and a center gear 211 is rotatably connected to the outside of the center seat 216. The air intake 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. The top surface of the bottom cover 105 is fixed with a rotating seat 208 in a circumferential array. Each group of rotating seats 208 is rotatably connected to a rotating shaft 209. The rotating gear 210 is plugged and fixed to the outside of the rotating shaft 209 and is engaged with the center gear 211. The top surface of the bottom cover 105 is also installed with a rotating motor 212. A drive gear 213 is plugged and fixed in the rotating shaft of the rotating motor 212, and the drive gear 213 is engaged 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 bottom partition 201 of the filter cartridge.

[0061] The rotating motor 212 is electrically connected to the main control board 106. When the rotating motor 212 is started, the driving gear 213 is driven to rotate. The driving gear 213 rotates in conjunction with the central gear 211, thereby driving the rotating gear 210 to rotate. In turn, the rotating shaft 209 drives the filter cartridge 203 to rotate through the plug-in engagement formed by the hexagonal head 214 and the hexagonal socket 215.

[0062] The purpose of providing the 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 partition 202, and the inner cylinder rotary shaft 305 is fixed to the middle of the outer top of the inner cylinder 304. The inner cylinder rotary shaft 305 is rotatably connected to 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 partition 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 partition 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. 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 solid cylinder 301 and the inner rotating cylinder 304. As the inner rotating cylinder 304 rotates, the through holes of the inner rotating cylinder 304 align with the through holes of the outer solid cylinder 301, or close to each other, thereby forming an opening and closing effect of the inner rotating cylinder 304 on the outer solid 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 rotary seat 313 of the electric cylinder, and the rotational connection formed by the main body of the telescopic electric cylinder 312 and the fixed rotary 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 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 Figure 9 、 Figure 10 and Figure 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. The middle top surface of the integrated partition 401 is fixed with a fan interface 403, and the middle bottom surface is fixed with a flared air guide cover 404. The fan interface 403 is connected to the flared air guide cover 404, and the fan interface 403 extends into the air inlet of the centrifugal fan 402 to guide the centrifugal fan 402. The flared air guide cover 404 with the flared structure improves the effect of negative pressure adsorption.

[0069] An air blowing integrated pipe seat 405 is fixedly mounted in a circumferential array in the main body of the integrated partition 401. One end of a 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 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 an external positive pressure air supply device. When the positive pressure starch dust collection is in operation, 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 duct 408 is fixedly connected to the upper end of the outer wall of the main housing 101. The air outlet of the centrifugal fan 402 is connected to the inner end of the exhaust duct 408. The exhaust filter element 410 is placed in the exhaust duct 408. The side cover 409 covers the outer end opening of the exhaust duct 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 air guide cover 404 to the fan interface 403, thereby providing negative pressure to the inner cavity of the filter cartridge 203 through the air intake guide 309 that is directly 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 Figure 12 、 Figure 13 and Figure 14 As shown, the screw top seats 502 are fixedly installed in a circular array on the top of the main body of the surrounding sleeve 107. A 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 screw top seats 502. 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 installed and fixed on the outer side of the switching sleeve 501 and is cooperatively connected to the switching screw 504.

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

[0076] The servo motor 511 is electrically connected to the main control board 106. When the servo motor 511 is started to drive the driving toothed belt pulley 512 to rotate, the driving toothed belt pulley 512 can drive the rotation of the rotating toothed belt pulley 513 through the connecting toothed belt 514. Thus, the rotating transmission mechanism composed of the transmission toothed belt pulley 509 and the transmission toothed belt 510 can drive the array switching screws 504 to rotate synchronously and in the same direction. Through the transmission cooperation formed by each switching screw 504 and the screw slider 505, the annular structure composed of the switching sleeve 501 and the dust collecting hopper 506 can be driven to move stably.

[0077] The row spacing of the air inlet micropores 108 formed on the side wall of the main housing 101 is equal to the row spacing of the dust collection connection holes 507 formed on the inner wall of the dust hopper 506. After being aligned at the same height, they are connected one by one and face each other. In addition, the row spacing between each row of air inlet micropores 108 is greater than the aperture of the air inlet micropores 108, and the row spacing between each row of dust collection connection holes 507 is greater than the aperture of the dust collection connection holes 507, so as to form a partition surface of sufficient size, so that the switching sleeve 501 and the dust hopper 506 can move the dust collection connection holes 507 to a position where they are sealed from 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. This not only ensures that 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, the dust hopper 506 and the surrounding sleeve 107 are sealed, 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 downward-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 entered into the fabric bag connected to the external inclined tube 508 using 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above 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 shell assembly (1) includes a main shell (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 shell (101), and the inner filter cartridge assembly (2) includes a filter cartridge bottom partition (201), a filter cartridge top partition (202) and a filter cartridge (203), wherein the filter cartridge bottom partition (201) and the filter cartridge top partition (202) are both fixedly installed in the inner cavity of the main shell (101), and the filter cartridge (203) is arranged in a circumferential array on the filter cartridge bottom partition (201). ) and the top baffle (202) of the filter cartridge, the positive and negative pressure switching component (3) comprises an outer solid cylinder (301), an air intake connecting pipe (302) and an inner rotating cylinder (304), the outer solid cylinder (301) is fixedly connected to the middle portion between the bottom baffle (201) and the top baffle (202) of the filter cartridge, the air intake 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 end of the main body is screwed to the top baffle (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 partition (202) at a position directly opposite to the filter cartridge (203). The top end of the filter cartridge top partition (202) 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 a negative pressure, and the air blowing connection seat (310) is connected to a positive pressure, and the inner rotating cylinder ( The outer top of the switch ring (307) 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) includes a switching sleeve (501) and a dust collecting hopper (506). The switching sleeve (501) and the dust collecting hopper (506) form an annular structure that 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). 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 collection connection holes (507) opened on the inner wall of the dust collection hopper (506), and they are connected one by one after being equal in 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 collection connection holes (507) is greater than the aperture of the dust collection connection holes (507).

2. A dust recovery device for corn starch production according to claim 1, characterized in that: The main shell assembly (1) further comprises 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 corners 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), wherein 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 end of the filter cartridge (203), and the upper socket (206) is rotatably connected to the inside of the upper sleeve (205) through the thrust bearing (207), a central seat (216) is fixed to the middle of the bottom end of the filter cartridge bottom baffle (201), and 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), and a bottom cover ( The top surface of the bottom cover (105) is fixed with rotating seats (208) in a circumferential array, and each group of rotating seats (208) is rotatably connected to 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 fixed 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 any one of claims 1 to 3, characterized in that: The positive and negative pressure switching member (3) further comprises an inner cylinder rotary seat (303), a Y-shaped frame (308), a telescopic electric cylinder (312) and an electric cylinder movable rotary seat (313), wherein the inner cylinder rotary seat (303) is fixedly mounted on the middle portion of the main body of the filter cartridge top partition (202), an inner cylinder rotary shaft (305) is fixed on the middle portion of the outer top end of the inner rotary cylinder (304), and the inner cylinder rotary shaft (305) is rotatably connected to the inner cylinder rotary seat (303), the middle portion 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 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), and an electric cylinder fixed rotating seat (311) is fixed to 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 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).

5. The 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 on the top of the main body of the sleeve (107) in a circumferential array. A screw base (503) is fixed at a position opposite to each set 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 mounted and fixed on the switching screw (504). The outer side surface of the switching sleeve (501) is matched and connected in the switching screw (504), and the bottom ends of adjacent switching screws (504) are connected in sequence through a rotating transmission mechanism formed by a transmission toothed belt (510) and a transmission toothed belt (510), wherein the bottom end of one group of switching screws (504) is also fixed with a rotating toothed belt (513), and a servo motor (511) is fixedly installed on the outer bottom surface of the bottom cover (105), and a driving toothed belt (512) is inserted and fixed in the rotating shaft of the servo motor (511), and a connecting toothed belt (514) is installed between the driving toothed belt (512) and the rotating toothed belt (513).

6. A dust recovery device for corn starch production according to any one of claims 1, 2, 3, and 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).

7. A dust recovery device for corn starch production according to any one of claims 1, 2, 3, and 5, characterized in that: The bottom end of the outer side surface of the dust collecting hopper (506) is connected to an external oblique tube (508).

8. A dust recovery device for corn starch production according to any one of claims 2, 3, and 5, characterized in that: The inner top of the main shell (101) is also equipped with a positive and negative pressure integrated component (4), which includes an integrated partition (401), a centrifugal fan (402), a connecting hose (406), a side cover (409) and an exhaust filter element (410). The integrated partition (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 on the middle top surface of the integrated partition (401), and a flared air guide cover (404) is fixed on the middle bottom surface. The fan interface (403) is connected to the flared air guide cover (404), and the fan interface (403) extends into the air inlet of the centrifugal fan (402). The main body of the integrated partition (401) is equipped with a circumferential array of fixed fans. 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 partition (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 the 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 to 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 filter (410) is placed in the exhaust channel (408), and the side cover (409) is covered at the outer end opening of the exhaust channel (408).

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