Rice polishing machine with sieve plate cleaning function

Abstract

The utility model relates to the technical field of rice processing, in particular to a rice polishing machine with a sieve plate cleaning function, and aims to solve the technical problems that in the prior art, manual shutdown purging wastes time and labor, and production efficiency is reduced. The rice polishing machine specifically comprises a machine body, a feeding port is formed in one side of the top of the machine body, and a discharging port is formed in the side, away from the feeding port, of the machine body; a feeding port and a discharging port are formed in the machine body, a polishing assembly is arranged between the feeding port and the discharging port, a bran collecting assembly is arranged below the polishing assembly, the polishing assembly comprises a main shaft arranged on the upper portion of the machine body, a pushing section and a polishing section are arranged on the main shaft, the pushing section is correspondingly arranged below the feeding port, and the polishing section is arranged between the pushing section and the discharging port; through the arrangement of the purging assembly and the driving mechanism, the timing automatic cleaning function of the sieve plate is achieved, and the labor intensity of operators is greatly relieved; the purging assembly is arranged in the machine body, the side cover does not need to be opened manually in the purging process, the polishing machine can work continuously, and the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice polishing machine with a sieve plate cleaning function. Background Art

[0002] In the rice processing industry, rice polishing is an important link to improve the appearance gloss and quality of rice. Traditional rice polishing machines include a machine body, a polishing component, a bran suction component and a water spraying component. The polishing component includes a main shaft arranged at the top of the machine body, with a feed inlet and a discharge outlet provided at both ends of the main shaft. Along the direction of feed and discharge, a pusher rod and a polishing roller are successively arranged on the main shaft. A water delivery pipe connected to the water spraying component is arranged inside the polishing roller, and a plurality of nozzles connected to the water delivery pipe are arranged on the surface of the polishing roller. A sieve plate is fixedly arranged on the outer peripheral side of the polishing roller, and a polishing chamber for rice is formed between the sieve plate and the polishing roller. A bran suction chamber connected to the bran suction component is arranged below the polishing chamber. During use, rice is fed into the machine body from the feed inlet and enters the polishing chamber along the axis under the action of the pusher rod. The water spraying component is started, and water mist is sprayed on the surface of the polishing roller. The rice starts to be polished under the conditions of water, the polishing roller, the sieve plate, appropriate negative pressure and a certain outlet pressure. The polished rice is discharged from the discharge outlet and enters the next process, while the bran powder generated during polishing passes through the sieve plate and enters the bran suction chamber, and is sucked and collected by the bran suction component, thus completing the entire polishing process.

[0003] However, a large amount of bran powder generated during the above polishing process is easily adhered to the surface of the sieve plate, resulting in blockage of the sieve plate, which in turn affects the polishing effect and the normal operation of the equipment. Therefore, the sieve plate needs to be cleaned regularly. In the prior art, manual blowing is often adopted, which is not only time-consuming and laborious, but also the cleaning effect is greatly affected by human factors. At the same time, when manually blowing, in order to open the machine cover, the fan often needs to be turned off to reduce the negative pressure in the bin, and the rice cannot be polished when the fan is turned off, reducing the overall production efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a rice polishing machine with a sieve plate cleaning function, which can clean the sieve plate automatically at regular intervals without manual shutdown and blowing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A rice polishing machine with a sieve plate cleaning function includes a machine body. One side of the top of the machine body is provided with a feed inlet, and the other side of the machine body away from the feed inlet is provided with a discharge outlet. A polishing component is arranged between the feed inlet and the discharge outlet, and a bran collecting component is arranged below the polishing component. The characteristics are:

[0007] The polishing assembly includes a main shaft disposed at the upper part of the machine body. A material pushing section and a polishing section are provided on the main shaft. The material pushing section is correspondingly disposed below the feeding port, and the polishing section is disposed between the material pushing section and the discharging port.

[0008] A spiral pusher is coaxially provided on the material pushing section. A baffle plate fixedly connected to the machine frame is provided on the outer periphery of the spiral pusher. A feeding chamber for rice is formed between the spiral pusher and the baffle plate. A feeding pipe leading to the feeding chamber is downwardly provided at the bottom of the feeding port.

[0009] A polishing roller is coaxially provided on the polishing section. A sieve plate fixedly connected to the machine frame is provided on the outer periphery of the polishing roller. A polishing chamber communicating with the feeding chamber is formed between the polishing roller and the sieve plate. The discharging port is communicated with the end of the polishing chamber.

[0010] A purging assembly is provided between the machine body and the sieve plate. The purging assembly includes a slide rail fixedly provided on at least one side of the sieve plate and parallel to the main shaft. A slider is correspondingly provided on the slide rail. A blowing frame is fixedly provided above the slider. A plurality of sector nozzles connected to a gas source are arranged on the blowing frame. The nozzles of the sector nozzles are arranged facing the sieve plate.

[0011] A driving mechanism is provided on the slide rail. The driving mechanism is used to drive the slider to move, so as to drive the sector nozzles to reciprocate along the direction of the main shaft, realizing the blowing and bran removal of the surface of the sieve plate along the way.

[0012] The technical problem to be solved by the present utility model can be further realized by the following steps. The blowing frame is semi-circular arc-shaped. The sector nozzles are evenly and equidistantly arranged on the blowing frame. The nozzle of each sector nozzle is directly opposite to the central axis of the sieve plate.

[0013] The technical problem to be solved by the present utility model can be further realized by the following steps. The cross section of the blowing frame is concentric with the cross section of the main shaft. There are four sector nozzles in total. For the uppermost and lowermost sector nozzles, the connection line of their nozzles penetrates through the sieve plate.

[0014] The technical problem to be solved by the present utility model can be further realized by the following steps. An air compressor is provided on one side at the bottom of the machine frame. An air supply main pipe is provided at the air outlet of the air compressor. The other end of the air supply main pipe is connected to the air inlet of each sector nozzle through a first branch pipe. An air supply cut-off valve is provided on the air supply main pipe.

[0015] The technical problem to be solved by the present utility model can also be further realized through the following steps. The driving mechanism is a rodless driving cylinder. The slide rail is arranged on the upper surface of the driving cylinder. The slider is fixedly connected to the output end of the driving cylinder. A second branch pipe is provided on the air supply main pipe. The other end of the second branch pipe is connected with a reversing valve. The left air port and the right air port of the driving cylinder are respectively connected to the two valve ports of the reversing valve through pipelines.

[0016] The technical problem to be solved by the present utility model can also be further realized through the following steps. A partition plate fixedly connected to the frame is vertically arranged in the middle of the polishing section. There are two blowing and sweeping assemblies, which are respectively arranged on both sides of the partition plate.

[0017] The technical problem to be solved by the present utility model can also be further realized through the following steps. The main shaft further includes a driving section, which is arranged between the end of the main shaft far from the discharge port and the pushing section. A driven belt pulley is coaxially sleeved on the driving section. A driving motor is arranged on the other side of the bottom of the machine body. A driving belt pulley is fixedly arranged at the output end of the driving motor. The driving belt pulley and the driven belt pulley are connected and driven by a belt.

[0018] The technical problem to be solved by the present utility model can also be further realized through the following steps. The bran collecting assembly includes a bran collecting hopper arranged below the sieve plate. The bottom of the bran collecting hopper is provided with a bran discharging pipe downward. The other end of the bran discharging pipe extends to the surface of the machine body and is provided with a wind net interface, and the wind net interface is used for connecting an external dust collecting pipeline.

[0019] The technical problem to be solved by the present utility model can also be further realized through the following steps. The top of the feeding pipe passes through the feeding port upward and extends out. A feeder is fixedly installed on the extending end. The feeder is an impeller feeder driven by a motor.

[0020] The technical problem to be solved by the present utility model can also be further realized through the following steps. The inside of the main shaft is hollow and is provided with a water spraying pipe. The surface of the main shaft is provided with water spraying ports matching the water spraying pipe; it includes a water application component. The water application component includes a water tank arranged at the bottom of the frame. The end of the water spraying pipe is communicated with the water tank through a water supply pipe, and a water pump is arranged on the water supply pipe.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: By setting the blowing and sweeping assembly and the driving mechanism, the function of automatically cleaning the sieve plate regularly is realized, which greatly reduces the labor intensity of the operators and also reduces the influence of human factors on the cleaning effect; Since the blowing and sweeping assembly is arranged inside the machine body, it is not necessary to manually open the side cover during the blowing and sweeping process, so there is no need to turn off the fan, enabling the polishing machine to continuously operate, improving the continuous operation ability of the equipment and the overall production efficiency. Description of the Drawings

[0022] Figure 1 is the front view of the present utility model;

[0023] Figure 2 is the internal structure diagram of the present utility model (the dotted line in the figure is the air pipe);

[0024] Figure 3 is the side view of the purging assembly and the polishing section of the present utility model;

[0025] Figure 4 is the front view of the purging assembly of the present utility model;

[0026] Figure 5 is the front view of the sector nozzle of the present utility model;

[0027] In the figure: 1 - machine body; 2 - feed inlet; 3 - discharge outlet; 4 - main shaft; 5 - screw feeder; 6 - baffle plate; 7 - feed pipe; 8 - polishing roller; 9 - sieve plate; 10 - slide rail; 11 - slider; 12 - spraying frame; 13 - sector nozzle; 14 - air compressor; 15 - main air supply pipe; 16 - air supply cut-off valve; 17 - reversing valve; 18 - partition plate; 19 - drive motor; 20 - bran collecting hopper; 21 - air network interface; 22 - feeder; 23 - water spraying port; 24 - water tank; 25 - throttle valve; 26 - control box; 27 - drive cylinder. Detailed implementation manners

[0028] The following further describes the specific technical solutions of the present utility model to enable those skilled in the art to further understand the present utility model without restricting its rights.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the utility model.

[0030] Please refer to Figure 1-2 , a rice polishing machine with sieve plate cleaning, comprising a machine body 1, a feed inlet 2 is provided on one side of the top of the machine body 1, a discharge outlet 3 is provided on the side of the machine body 1 away from the feed inlet 2, a polishing assembly is provided between the feed inlet 2 and the discharge outlet 3, and a bran collecting assembly is provided below the polishing assembly;

[0031] The polishing assembly includes a main shaft 4 provided in the upper part of the machine body 1, a feeding section and a polishing section are provided on the main shaft 4, the feeding section is correspondingly provided below the feed inlet 2, and the polishing section is provided between the feeding section and the discharge outlet 3;

[0032] A spiral pusher 5 is coaxially and fixedly provided on the pusher section. A baffle plate 6 fixedly connected to the frame is provided on the outer periphery of the spiral pusher 5. A feeding chamber for rice is formed between the spiral pusher 5 and the baffle plate 6. A feeding pipe 7 leading to the feeding chamber is provided downward at the bottom of the feeding port 2. The feeding pipe 7 is used to feed rice into the feeding chamber. The baffle plate 6 plays a role in preventing rice from scattering during the pushing process, ensuring that the rice can smoothly enter the polishing chamber;

[0033] A polishing roller 8 is coaxially and fixedly provided on the polishing section. A sieve plate 9 fixedly connected to the frame is provided on the outer periphery of the polishing roller 8. A polishing chamber for rice is formed between the polishing roller 8 and the sieve plate 9. One end of the polishing chamber is communicated with the feeding chamber for the rice to enter for polishing. The other end of the polishing chamber is communicated with the discharge port 3 for the polished rice to be discharged. A suction fan (not shown in the figure) for reducing the air pressure in the polishing chamber is provided on one side of the discharge port 3;

[0034] Please refer to Figure 2-5 , a purging assembly is provided between the machine body 1 and the sieve plate 9. The purging assembly includes a slide rail 10 parallel to the main shaft 4. The slide rail 10 can be fixedly provided on one side or both sides of the slide rail 10. A slider 11 is correspondingly provided on the slide rail 10. A blowing frame 12 is provided above the slider 11. The blowing frame 12 and the slider 11 are fixed by a vertically arranged connecting rod. A plurality of sector nozzles 13 connected to a gas source are arranged on the blowing frame 12. The central connection line of the sector nozzles 13 is an arc concave toward the main shaft 4 side (please refer to Figure 3 ). The nozzles of the sector nozzles 13 are arranged facing the sieve plate 9 for spraying air flow to clean the bran powder on the sieve plate 9;

[0035] A driving mechanism is provided on the slide rail 10. The driving mechanism is used to drive the slider 11 to move, so as to drive the sector nozzles 13 to reciprocate along the direction of the main shaft 4, realizing the blowing and bran removal on the surface of the sieve plate 9 along the way.

[0036] Please refer to Figure 3-5 , to further improve the blowing effect, the blowing frame 12 is semicircular arc-shaped, the sector nozzles 13 are evenly and equidistantly arranged on the blowing frame 12, and the nozzle of each sector nozzle 13 is directly opposite to the central axis of the sieve plate 9 to ensure the comprehensiveness and effectiveness of the spraying and sweeping.

[0037] In the above structure, the cross section of the blowing frame 12 is concentric with the cross section of the main shaft 4; there are four sector nozzles 13 in total, and for the uppermost and lowermost sector nozzles 13, the connection line of their nozzles penetrates through the sieve plate 9; thus, the blowing frame 12 can "wrap" the sieve plate 9 from the outside, further improving the blowing effect.

[0038] Please refer to Figure 2, on one side of the bottom of the frame, there is an air compressor 14. The air outlet of the air compressor 14 is provided with a main air supply pipe 15. The other end of the main air supply pipe 15 is connected to the air inlet of each sector nozzle 13 through a first branch pipe to provide sufficient air flow for the sector nozzle 13. A gas supply cut-off valve 16 is provided on the main air supply pipe 15 to control the on-off of the air flow. In the above structure, the driving mechanism is a rodless driving cylinder 27. The slide rail 10 is arranged on the upper surface of the driving cylinder 27. The slider 11 is fixedly connected to the output end of the driving cylinder 27. A second branch pipe is provided on the main air supply pipe 15. The other end of the second branch pipe is connected to a reversing valve 17. A throttle valve 25 is provided at one end of the second branch pipe close to the reversing valve 17. The reversing valve 17 is specifically a three-position five-way electromagnetic reversing valve 17, and its structure and control method are prior arts. The left air port and the right air port of the driving cylinder 27 are respectively connected to two valve ports of the reversing valve 17 through pipelines. The control box 26 is respectively communicatively connected to the driving cylinder 27 and the reversing valve 17. In addition, the driving mechanism can also be any linear motion mechanism in the prior art, such as a lead screw nut mechanism, a gear rack mechanism, a crank slider 11 mechanism, etc. In the above structure, a partition plate 18 fixedly connected to the frame is vertically arranged in the middle of the polishing section. There are two blowing and sweeping assemblies, which are respectively arranged on both sides of the partition plate 18. In this way, even if the length of the driving cylinder 27 is limited, the entire sieve plate 9 can be covered in the length direction through this "assembled" method. Obviously, the number of partition plates 18 can be set according to the length of the sieve plate 9 and the length of the driving cylinder 27, which will not be elaborated here.

[0039] Please refer to Figure 2 , as a preferred structure for realizing the rotation of the main shaft 4, the main shaft 4 further includes a driving section, which is arranged between the end of the main shaft 4 far from the discharge port 3 and the material pushing section. A driven belt pulley is coaxially sleeved on the driving section. On the other side of the bottom of the machine body 1, there is a driving motor 19. The output end of the driving motor 19 is fixedly provided with a driving belt pulley. The driving belt pulley and the driven belt pulley are connected and transmitted through a belt. Setting the driving motor 19 inside the machine body 1 can further reduce the space occupied by the polishing machine.

[0040] Please refer to Figure 2 , the bran collecting assembly includes a bran collecting hopper 20 arranged below the sieve plate 9. The bottom of the bran collecting hopper 20 is provided with a bran outlet pipe downward. The other end of the bran outlet pipe extends to the surface of the machine body 1 and is provided with a wind net interface 21. The wind net interface 21 is used to connect to an external dust collecting pipeline so as to send the collected bran powder into the dust collecting equipment for subsequent processing.

[0041] Please refer to Figure 1-2 , the top of the feed pipe 7 passes upward through the feed port 2 and extends out. A feeder 22 is fixedly installed at the extending end. The feeder 22 is an impeller feeder driven by a motor and is used to control the feeding speed and flow rate of rice.

[0042] Please refer to Figure 2-3 , the inside of the main shaft 4 is hollow and is provided with a water spray pipe (not shown in the figure). The surface of the main shaft 4 is provided with a water spray port 23 that cooperates with the water spray pipe. The polishing machine of the present invention further includes a water application assembly. The water application assembly includes a water tank 24 provided at the bottom of the frame. The end of the water spray pipe is connected to the water tank 24 through a water delivery pipe, and a water pump is provided on the water delivery pipe.

[0043] Please refer to Figure 1-2 , a control box 26 is provided at the top of the machine body 1. The control box 26 is respectively in communication connection with the above-mentioned drive motor 19, drive cylinder 27, air compressor 14, air supply cut-off valve 16, reversing valve 17, feeder 22 and water pump. A control panel is provided on one side of the control box 26.

[0044] Working principle: For a rice polishing machine with sieve plate cleaning of the present invention, when in use, first connect the air network interface 21 to the dust collection pipeline, and set the interval time for regular cleaning (usually one hour) through the control panel. Then start the polishing machine. At this time, the drive motor 19 starts to operate, drives the main shaft 4 to rotate through the belt transmission mechanism; the suction and pressure fan starts, and a negative pressure is formed in the polishing chamber; the water pump starts, and the water in the water tank 24 is sent into the water spray pipe inside the main shaft 4 and atomized and sprayed out from the water spray port 23 to form a water mist. Then rice is input into the machine body 1 through the feeder 22. The rice to be polished enters the feeding chamber, is pushed into the polishing chamber by the spiral pusher 5, and is ground and polished under the interaction of the sieve plate 9 and the polishing roller 8. The polished rice is discharged from the discharge port 3 and collected into the material receiving device. The bran powder formed during polishing comes out from the holes on the sieve plate 9 under the action of wind force, enters the bran collecting hopper 20, and is sucked into the dust collection device of the air network system through the air network interface 21 of the bran discharge pipe.

[0045] After continuous polishing reaches the set time, the purging assembly starts to work according to the set start interval. At this time, the air compressor 14 starts, and the high-pressure air flow generated is delivered to the air inlet of each sector-shaped nozzle 13 through the air supply main pipe 15 and the first branch pipe; at the same time, under the action of the second branch pipe and the reversing valve 17, the drive cylinder 27 drives the spraying frame 12 and the sector-shaped nozzles 13 thereon to make a reciprocating movement along the direction of the main shaft 4 for ten seconds. The spray ports of the sector-shaped nozzles 13 face the sieve plate 9, and the sprayed sector-shaped high-pressure air flow directly acts on the surface of the sieve plate 9 to blow off the attached bran powder, ensuring the continuous stability of the polishing effect and production efficiency.

[0046] Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

Claims

1. A rice polishing machine with sieve plate cleaning, comprising a machine body. One side of the top of the machine body is provided with a feed inlet, and the other side of the machine body away from the feed inlet is provided with a discharge outlet. A polishing assembly is arranged between the feed inlet and the discharge outlet, and a bran collecting assembly is arranged below the polishing assembly. It is characterized in that: The polishing assembly includes a main shaft arranged at the upper part of the machine body. A material pushing section and a polishing section are arranged on the main shaft. The material pushing section is correspondingly arranged below the feed inlet, and the polishing section is arranged between the material pushing section and the discharge outlet; A spiral feeder is coaxially arranged on the material pushing section. A baffle plate fixedly connected to the machine frame is arranged on the outer periphery of the spiral feeder. A feeding chamber for rice is formed between the spiral feeder and the baffle plate. A feed pipe leading to the feeding chamber is arranged downward at the bottom of the feed inlet; A polishing roller is coaxially arranged on the polishing section. A sieve plate fixedly connected to the machine frame is arranged on the outer periphery of the polishing roller. A polishing chamber communicated with the feeding chamber is formed between the polishing roller and the sieve plate. The discharge outlet is communicated with the end of the polishing chamber; A blowing assembly is arranged between the machine body and the sieve plate. The blowing assembly includes a slide rail fixedly arranged on at least one side of the sieve plate and parallel to the main shaft. A slider is correspondingly arranged on the slide rail. A blowing frame is fixedly arranged above the slider. A plurality of sector nozzles connected to a gas source are arranged on the blowing frame. The nozzle of the sector nozzle is arranged towards the sieve plate; A driving mechanism is arranged on the slide rail. The driving mechanism is used to drive the slider to move, so as to drive the sector nozzles to reciprocate along the direction of the main shaft, realizing the blowing and bran removal on the surface of the sieve plate along the way.

2. The rice polishing machine with sieve plate cleaning according to claim 1, wherein: The blowing frame is semi-circular arc-shaped. The sector nozzles are evenly arranged on the blowing frame at equal intervals. The nozzle of each sector nozzle is directly opposite to the central axis of the sieve plate.

3. The rice polishing machine with sieve plate cleaning according to claim 2, characterized in that: The cross-section of the blowing frame is concentric with the cross-section of the main shaft; there are four sector nozzles in total. For the upper and lower sector nozzles, the connection line of their nozzles penetrates through the sieve plate.

4. The rice polishing machine with sieve plate cleaning according to claim 1, characterized in that: An air compressor is arranged on one side of the bottom of the machine frame. The air outlet of the air compressor is provided with a main air supply pipe. The other end of the main air supply pipe is connected to the air inlet of each sector nozzle through a first branch pipe. An air supply cut-off valve is arranged on the main air supply pipe.

5. The rice polishing machine with sieve plate cleaning according to claim 4, characterized in that: The driving mechanism is a rodless driving cylinder. The slide rail is arranged on the upper surface of the driving cylinder. The slider is fixedly connected to the output end of the driving cylinder. A second branch pipe is arranged on the main air supply pipe. The other end of the second branch pipe is connected with a reversing valve. The left air port and the right air port of the driving cylinder are respectively connected to the two valve ports of the reversing valve through pipelines.

6. The rice polishing machine with sieve plate cleaning according to claim 5, characterized in that: A partition plate fixedly connected to the machine frame is vertically arranged in the middle of the polishing section. There are two blowing assemblies, which are respectively arranged on both sides of the partition plate.

7. The rice polishing machine with sieve plate cleaning according to claim 1, characterized in that: The main shaft further includes a driving section, which is arranged between the end of the main shaft away from the discharge outlet and the material pushing section. A driven belt pulley is coaxially sleeved on the driving section. A driving motor is arranged on the other side of the bottom of the machine body. A driving belt pulley is fixedly arranged at the output end of the driving motor. The driving belt pulley and the driven belt pulley are connected and driven by a belt.

8. The rice polishing machine with sieve plate cleaning according to claim 1, wherein: The bran collecting assembly includes a bran collecting hopper disposed below the sieve plate. The bottom of the bran collecting hopper is provided with a bran outlet pipe extending downward, and the other end of the bran outlet pipe extends to the surface of the machine body and is provided with a wind screen interface for connecting an external dust collecting pipeline.

9. The rice polishing machine with sieve plate cleaning according to claim 1, characterized in that: The top of the feed pipe passes upward through the feed inlet and extends out. A feeder is fixedly installed at the extended end, and the feeder is an impeller feeder driven by a motor.

10. The rice polishing machine with sieve plate cleaning according to claim 1, characterized in that: The inside of the main shaft is hollow and provided with a water spraying pipe, and the surface of the main shaft is provided with water spraying ports matching the water spraying pipe. It includes a water adding assembly. The water adding assembly includes a water tank disposed at the bottom of the frame. The end of the water spraying pipe is communicated with the water tank through a water delivery pipe, and a water pump is provided on the water delivery pipe.

Images