Rice polishing device
By combining a negative pressure fan and a cleaning device, the problem of inconvenient cleaning caused by bran powder adhesion in traditional rice polishing devices is solved, realizing the self-cleaning and continuous filtration capabilities of the rice polishing device, and ensuring the continuity and efficiency of production.
Patent Information
- Application Number
- CN202520957287.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-05-15
AI Technical Summary
In traditional rice polishing devices, when separating rice grains from bran powder, the bran powder tends to adhere to the surface of the separating device, making cleaning inconvenient and affecting the separation effect and equipment operating efficiency.
Design a self-cleaning rice polishing device. Use a negative pressure fan to capture the dust generated during polishing. The cleaning device moves axially along the separation device, and in conjunction with the rotation of the separation device, the device can achieve self-cleaning and maintain the effective filtration capacity of the screen.
It achieves continuous and effective dust particle discharge and self-cleaning of the separation device without disassembling the machine, ensuring the continuity and efficiency of production.
Smart Images
Figure CN223945731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rice polishing device. Background Technology
[0002] Polishing is a crucial step in existing rice processing, aiming to remove bran and powder from the surface of rice grains and improve their gloss and quality. However, traditional rice polishing equipment suffers from the following technical problems during operation:
[0003] Cleaning the separation device is inconvenient: After polishing, rice grains and bran powder need to be separated by a separation device (such as a screen or spiral separator). However, bran powder easily adheres to the surface of the separation device, and long-term accumulation will affect the separation effect and even increase the operating resistance of the equipment. Most existing equipment uses manual cleaning after shutdown, which is not only inefficient but also affects the continuity of production.
[0004] Based on the above problems, we designed a rice polishing device that can achieve self-cleaning and maintain continuous and effective filtration capabilities without disassembling the machine. Utility Model Content
[0005] The purpose of this invention is to provide a rice polishing device that can achieve self-cleaning and maintain continuous and effective filtration capabilities without disassembling the machine.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A rice polishing device includes a housing with a powder collection tank welded to its bottom. A negative pressure fan is installed at the rear end of the collection tank, and a dust collection bag is installed at the outlet of the negative pressure fan. The operation of the negative pressure fan creates a negative pressure inside the housing, capturing the dust generated during rice polishing. A separation device is rotatably installed inside the housing, with a polishing roller assembly coaxially mounted at its axis. A feeding hopper is installed at the right end of the housing, conveying rice towards the separation device. A discharge hopper is installed at the left end of the housing, with the end of the separation device inserted into it. A cleaning device is installed through the housing, acting on the separation device and displacing axially along the separation device.
[0008] Preferably, a base plate is provided below the outer casing, which is fixed to the ground. The base plate is rotatably engaged with the collection groove. An electric push rod is rotatably installed between the base plate and the collection groove, and the outer casing is driven to rotate by the extension and retraction of the electric push rod.
[0009] Preferably, the separating device comprises a separating cylinder, a discharge cover is welded to the left end of the separating cylinder, a feeding pipe is welded to the right end of the separating cylinder, bearings and shaft seals are matched between the discharge cover and the feeding pipe and the shell, the shaft seals are sealed to the inner side of the bearings, a screen is arranged on the surface of the separating cylinder, the discharge cover is inserted into the discharge hopper, first bearings and first shaft seals are matched between the discharge cover and the discharge hopper, the first shaft seals are sealed to the inner side of the first bearings, a bend pipe is welded to the bottom of the feeding hopper, the lower end of the bend pipe is inserted into the feeding pipe, a sealing ring is clamped on the outer wall of the bend pipe, and the sealing ring forms a seal with the feeding pipe; the cleaning device acts on the outer surface of the separating cylinder, the polishing roller assembly is installed in the separating cylinder, a first motor is installed at the bottom of the shell, and a first belt transmission mechanism is matched between the first motor and the discharge cover.
[0010] Preferably, the polishing roller assembly comprises a rotating shaft, the rotating shaft passes through the shaft center of the separating cylinder, the rotating shaft is provided with first spiral fins at positions corresponding to the discharge cover, the rotating shaft is provided with second spiral fins at positions corresponding to the feeding pipe, and polishing rollers are fixed to the rotating shaft at positions corresponding to the separating cylinder, the polishing rollers have outer conical surfaces with diameters gradually increasing towards the left side, the rotating shaft passes through the bend pipe, second bearings and second shaft seals are matched between the rotating shaft and the bend pipe, and the second shaft seals are sealed to the inner side of the second bearings; a second motor is installed at the bottom of the shell, and a second belt transmission mechanism is matched between the second motor and the rotating shaft.
[0011] Preferably, the cleaning device comprises a cleaning ring and a third motor, the cleaning ring is sleeved on the outer wall of the separating cylinder, a rubber ring is clamped on the inner wall of the cleaning ring, brush hairs are implanted on the inner wall of the rubber ring, the brush hairs act on the outer wall of the separating cylinder, the third motor is fixed to the top of the shell, a narrow groove is transversely arranged on the top of the shell, a connecting plate is welded to the upper end of the cleaning ring, the connecting plate extends upward after passing through the narrow groove, a threaded pipe is welded to the upper end of the connecting plate, guide pipes are welded in parallel on both sides of the threaded pipe, two bases are arranged on the top of the shell, a guide rod is fixed between the two bases, the guide rod passes through the guide pipes, a screw rod is rotatably installed between the two bases, the screw rod is matched with the threaded pipe, and one end of the screw rod is connected with the third motor.
[0012] Compared with the prior art, the present application has the following beneficial effects:
[0013] The device realizes surface cleaning of the separating cylinder, guarantees effective passing performance of the screen, ensures continuous and effective discharge of dust particles, realizes self-cleaning of the equipment, and realizes collection of particulate matters through cooperation of negative pressure extraction.
[0014] The device has simple structure and low cost, and is suitable for popularization and use. DETAILED DESCRIPTION
[0015] Figure 1 is a sectional view of the device;
[0016] Figure 2 is a top view of the device;
[0017] Figure 3 is a left part schematic view of the device;
[0018] Figure 4 is a right part schematic view of the device. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] Please refer to Figure 1 and Figure 2 , the utility model discloses a rice polishing device, including the shell 1, the bottom welding of shell 1 has the gathering groove 2 of gathering powder material, the rear end of gathering groove 2 is installed with negative pressure fan 3, the air outlet end of negative pressure fan 3 is installed with dust bag 31, through the operation of negative pressure fan 3, form negative pressure in shell 1, capture the dust material generated by polishing rice, rotatingly be provided with separating device 4 in the inside of shell 1, the shaft center of separating device 4 is installed with polishing roller assembly 5 coaxially, the right end of shell 1 is installed with feeding hopper 6, feeding hopper 6 sends rice to separating device 4, the left end of shell 1 is installed with discharge hopper 7, the tail end of separating device 4 is inserted into discharge hopper 7, through the shell 1 is installed with cleaning device 8, cleaning device 8 acts on separating device 4, cleaning device 8 is along the axial displacement of separating device 4, discharge hopper 7 and feeding hopper 6 are all fixed with shell 1 through connecting rod 99, the bottom welding of discharge hopper 7 has discharge nozzle 771.
[0021] In the technical scheme, the friction polishing of rice is completed by cooperation of the separating device 4 and the polishing roller assembly 5, the dust generated in the polishing is dropped from the surface of the separating device 4 and captured by the negative pressure fan 3, and the dust adhered to the surface of the rotating device 4 is cleaned by the active displacement of the cleaning device 8 and the rotation of the separating device 4, so that the dust is captured by the negative pressure device 3 after being dropped, and the self-cleaning of the equipment is completed.
[0022] Referring to Figure 1 As shown, the bottom plate 121 is arranged below the shell 1 and fixed to the ground, the bottom plate 121 is rotationally matched with the collecting groove 2, and the electric push rod 131 is rotationally installed between the bottom plate 121 and the collecting groove 2, and the rotation of the shell 1 is driven by the extension of the electric push rod 131.
[0023] In the technical scheme, when the rice is polished, the shell 1 is rotated to 10-15 degrees by the jacking of the electric push rod 131, so that the rice particles are conveniently fed into the separating device.
[0024] The electric push rod 131 is matched with a corresponding controller.
[0025] Referring to Figure 3 and Figure 4 As shown, the separating device 4 comprises a separating cylinder 41, the left end of the separating cylinder 41 is welded with a discharge cover 42, the right end of the separating cylinder 41 is welded with a feeding pipe 43, the discharge cover 42 and the feeding pipe 43 are matched with bearings (not shown) and shaft seals (not shown) between the discharge cover 42 and the feeding pipe 43, the shaft seals are sealed to the inner side of the bearings, a screen 44 is arranged on the surface of the separating cylinder 41, the discharge cover 42 is inserted into the discharge hopper 7, the discharge cover 42 and the discharge hopper 7 are matched with first bearings (not shown) and first shaft seals (not shown) between the discharge cover 42 and the discharge hopper 7, the first shaft seals are sealed to the inner side of the first bearings, the bottom of the feeding hopper 6 is welded with a bend pipe 61, the lower end of the bend pipe 61 is inserted into the feeding pipe, a sealing ring 62 is clamped on the outer wall of the bend pipe 61, and the sealing ring 62 forms a seal with the feeding pipe 43; the cleaning device 8 acts on the outer surface of the separating cylinder 41, the polishing roller assembly 5 is installed in the separating cylinder 41, a first motor 45 is installed at the bottom of the shell 1, and the first motor 45 is matched with the discharge cover 42 through a first belt transmission mechanism 451.
[0026] In the technical scheme, the screening of powder particles is completed by the screen 44 on the surface of the separating cylinder 41, the cleaning of the screen 44 is completed by the axial displacement of the cleaning device 8 along the separating cylinder 41, and the passing capacity of the screen 44 is restored.
[0027] Referring to Figure 3 and Figure 4As shown, the polishing roller assembly 5 comprises a rotating shaft 51 which passes through the axis of the separating cylinder 41, the rotating shaft 51 is provided with a first spiral piece 52 at the position corresponding to the discharge cover, the rotating shaft 51 is provided with a second spiral piece 53 at the position corresponding to the feeding pipe 43, the rotating shaft 51 is fixed with a polishing roller 54 at the position corresponding to the separating cylinder 41, the polishing roller 54 has an outer conical surface with gradually increasing diameter towards the left side, the polishing roller 51 adopts a conventional polishing roller special for rice, the rotating shaft 51 passes through the elbow pipe 61, the second bearing (not shown) and the second shaft seal (not shown) are matched between the rotating shaft 51 and the elbow pipe 61, the second shaft seal is sealed to the inside of the second bearing, the second motor 55 is installed at the bottom of the housing 1, the second belt transmission mechanism 551 is matched between the second motor 55 and the rotating shaft 51, the end of the rotating shaft 51 is inserted into the discharge hopper 7, and the third bearing (not shown) and the third shaft seal (not shown) are matched between the rotating shaft 51 and the discharge hopper 7, the third shaft seal is sealed to the inside of the third bearing.
[0028] In the above technical scheme, the rotation of the rotating shaft 51 makes the second spiral piece 53 rotate to complete the feeding towards the separating cylinder 41, and makes the first spiral piece 52 rotate to complete the discharging.
[0029] The rotating shaft 51 and the separating cylinder 41 rotate in the same direction, but there is a difference in rotating speed, the rotating speed of the separating cylinder 41 is 10-20 revolutions per minute, and the rotating speed of the rotating shaft 51 is 60-120 revolutions per minute.
[0030] Referring to Figure 2 and Figure 3As shown, the cleaning device 8 comprises a cleaning ring 81 and a third motor 82, the cleaning ring 81 is sleeved on the outer wall of the separation cylinder 41, a rubber ring 83 is clamped on the inner wall of the cleaning ring 81, brush 84 is implanted on the inner wall of the rubber ring 83, the brush 84 acts on the outer wall of the separation cylinder 41, the third motor 82 is fixed on the top of the shell 1, a narrow slot (not shown) is transversely arranged on the top of the shell 1, the slot width of the narrow slot is 5mm, two sealing rubber strips (not shown) are embedded on the inner wall of the narrow slot, the two sealing rubber strips are closed after contact, the upper end of the cleaning ring 81 is welded with a connecting plate 85, the connecting plate 85 extends upward after passing through the narrow slot 888, the connecting plate 85 pushes away the sealing rubber strips on both sides, the sealing rubber strips are only pushed away to a certain opening at the position close to the connecting plate 85, the dust emission rate is low, and there is no obvious dust leakage when the negative pressure is established in the shell 1, the upper end of the connecting plate 85 is welded with a threaded pipe 86, guide pipes 87 are welded in parallel on both sides of the threaded pipe 86, two bases 88 are arranged on the top of the shell 1, a guide rod 89 is fixed between the two bases 88, the guide rod 89 passes through the guide pipes 87, a screw rod 810 is rotatably installed between the two bases 88, the screw rod 810 cooperates with the threaded pipe 86, and one end of the third motor 82 is connected with the screw rod 810.
[0031] In the above technical scheme, the cleaning ring 81 reciprocates along the separation cylinder 41 under the rotation of the screw rod 810, the moving speed is 1m / min, the movement of the cleaning ring 81 makes the brush 84 contact the rotating separation cylinder 41, and the cleaning and dredging of the screen are completed.
[0032] The contents not described in detail in the description belong to the prior art known by those skilled in the art.
[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A rice polishing apparatus comprising a housing, a collection tank for collecting powder materials being welded to the bottom of the housing, a negative pressure fan being installed at the rear end of the collection tank, a dust collection bag being installed at the air outlet end of the negative pressure fan, and a negative pressure being formed in the housing by the operation of the negative pressure fan to capture the dust materials generated by polishing the rice, characterized in that, The polishing roller assembly is installed coaxially at the center of the separating device, a feeding hopper is installed at the right end of the shell, the feeding hopper feeds rice to the separating device, a discharging hopper is installed at the left end of the shell, the end of the separating device is inserted into the discharging hopper, a cleaning device is installed on the shell and acts on the separating device, and the cleaning device is displaced along the axis of the separating device. 2. The rice polishing apparatus according to claim 1, wherein A bottom plate is arranged below the shell and fixed to the ground through the bottom plate, the bottom plate is rotationally connected with the collecting tank, and an electric push rod is rotationally installed between the bottom plate and the collecting tank to drive the shell to rotate through the extension and retraction of the electric push rod.
3. The rice polishing apparatus according to claim 1, wherein The separating device comprises a separating cylinder, a discharging cover is welded to the left end of the separating cylinder, and a feeding pipe is welded to the right end of the separating cylinder; bearings and shaft seals are arranged between the discharging cover and the shell, the shaft seals are sealed to the inner sides of the bearings; a screen is arranged on the surface of the separating cylinder; the discharging cover is inserted into the discharging hopper, first bearings and first shaft seals are arranged between the discharging cover and the discharging hopper, and the first shaft seals are sealed to the inner sides of the first bearings; a bent pipe is welded to the bottom of the feeding hopper, the lower end of the bent pipe is inserted into the feeding pipe, a sealing ring is arranged on the outer wall of the bent pipe, and the sealing ring is sealed with the feeding pipe; the cleaning device acts on the outer surface of the separating cylinder, the polishing roller assembly is installed in the separating cylinder, a first belt transmission mechanism is arranged between the first motor and the discharging cover.
4. The rice polishing apparatus according to claim 3, wherein The polishing roller assembly comprises a rotating shaft, the rotating shaft passes through the center of the separating cylinder, the rotating shaft is provided with first spiral pieces at positions corresponding to the discharging cover, the rotating shaft is provided with second spiral pieces at positions corresponding to the feeding pipe, and polishing rollers are fixed to the rotating shaft at positions corresponding to the separating cylinder; the polishing rollers have outer conical surfaces with diameters gradually increasing toward the left; the rotating shaft passes through the bent pipe, second bearings and second shaft seals are arranged between the rotating shaft and the bent pipe, and the second shaft seals are sealed to the inner sides of the second bearings; a second belt transmission mechanism is arranged between the second motor and the rotating shaft. The polishing roller assembly comprises a rotating shaft, the rotating shaft passes through the center of the separating cylinder, the rotating shaft is provided with first spiral pieces at positions corresponding to the discharging cover, the rotating shaft is provided with second spiral pieces at positions corresponding to the feeding pipe, and polishing rollers are fixed to the rotating shaft at positions corresponding to the separating cylinder; the polishing rollers have outer conical surfaces with diameters gradually increasing toward the left; the rotating shaft passes through the bent pipe, second bearings and second shaft seals are arranged between the rotating shaft and the bent pipe, and the second shaft seals are sealed to the inner sides of the second bearings; a second belt transmission mechanism is arranged between the second motor and the rotating shaft.
5. The rice polishing apparatus according to claim 3, wherein The cleaning device comprises a cleaning ring and a third motor, the cleaning ring is sleeved on the outer wall of the separation cylinder, a rubber ring is clamped on the inner wall of the cleaning ring, brush hairs are implanted on the inner wall of the rubber ring, the brush hairs act on the outer wall of the separation cylinder, the third motor is fixed on the top of the shell, a narrow slot is transversely arranged on the top of the shell, a connecting plate is welded on the upper end of the cleaning ring, the connecting plate extends upward after passing through the narrow slot, a threaded pipe is welded on the upper end of the connecting plate, guide pipes are welded on both sides of the threaded pipe in parallel, two bases are arranged on the top of the shell, a guide rod is fixed between the two bases, the guide rod passes through the guide pipes, a screw rod is rotatably installed between the two bases, the screw rod cooperates with the threaded pipe, and one end of the screw rod is connected with the third motor.