Horizontal polishing machine for rice processing and using method thereof

Abstract

The invention discloses a horizontal polishing machine for rice processing, which comprises a rack, a polishing cavity is arranged on the rack, a polishing roller is arranged in the polishing cavity, one end of the polishing roller is in transmission connection with a driving motor, the horizontal polishing machine for rice processing further comprises a spraying mechanism, and the spraying mechanism comprises a spraying adjusting device. A rotating speed signal of the polishing roller is converted into displacement of the valve element through the centrifugal mass part, the elastic element and the transmission mechanism, and the rotating speed of the polishing roller and the conveying speed of rice are in positive correlation. Positive correlation adjustment of the opening number of the spraying holes and the rice conveying speed is achieved, namely, the spraying amount is reduced when the conveying speed is low, the spraying amount is increased when the conveying speed is high, the humidification amount is accurately matched with the rice grain retention time, and the polishing effect is remarkably improved. The technical problem that in the prior art, the spraying amount cannot be automatically adjusted according to changes of the rice conveying speed is solved.

Description

Technical Field

[0001] This invention relates to the field of rice processing equipment technology, and in particular to a horizontal polishing machine for rice processing and its usage method. Background Technology

[0002] In the rice refining process, polishing is a crucial step in improving the surface gloss of rice grains and removing surface bran powder. A horizontal polishing machine uses rotating polishing rollers to create friction between the rice grains and the rollers, as well as between the rice grains themselves, combined with an appropriate amount of atomized water, to make the rice grain surface smooth.

[0003] In the prior art, various spray control schemes for rice polishing machines have been proposed. For example, Chinese patent CN201720182072.1 discloses a horizontal polishing machine that uses a sprayer composed of several nozzles set on the side of the polishing machine, with each nozzle working independently, to achieve uniform water application to the rice. Although this scheme improves the uniformity of water application by setting multiple nozzles, its spray volume is still fixed and cannot be dynamically adjusted according to the actual working state of the polishing roller.

[0004] Furthermore, Chinese patent CN201110155768.2 discloses an automatic control method for a rice polishing machine, which mainly includes automatic control of water tank temperature and automatic control of spray flow rate, adjusting the temperature and flow rate of the water supply system through a control system. However, this type of control scheme, which uses electronic sensors in conjunction with solenoid valves, is susceptible to contamination and corrosion in high-humidity, high-dust polishing environments, leading to problems such as sensor malfunction and solenoid valve jamming. This results in poor equipment reliability and high maintenance costs.

[0005] In actual polishing processes, the rotational speed of the polishing roller is closely related to the conveying speed and residence time of the rice within the polishing chamber. When the polishing roller operates at low speed, the rice is conveyed slowly, and the rice grains remain in the polishing chamber for a longer time. If the spray volume is too large at this time, the surface of the rice grains is easily over-wetted, causing the rice grains to stick together, turn white, or even become moldy. When the polishing roller operates at high speed, the rice is conveyed quickly, and the rice grains remain in the polishing chamber for a shorter time. If the spray volume is insufficient at this time, the bran powder cannot be effectively removed, resulting in an unsatisfactory polishing effect. However, existing equipment cannot synchronously adjust the spray volume according to changes in rotational speed, making it difficult to maintain an ideal polishing effect under different processing conditions.

[0006] Therefore, there is an urgent need for a horizontal polishing machine that can automatically adjust the spray volume according to the speed of the polishing roller and has a simple and reliable structure, so as to achieve precise matching between the humidification amount, the rice grain conveying speed and the friction intensity, and ensure that a stable and high-quality polishing effect can be obtained under different processing conditions. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a horizontal polishing machine for rice processing and its usage method, thereby solving the technical problem in the prior art that the spray volume cannot be automatically adjusted according to changes in the rice conveying speed, resulting in unsatisfactory polishing effect.

[0008] To achieve the above-mentioned technical objectives, in a first aspect, the present invention provides a horizontal polishing machine for rice processing, including a frame, a polishing chamber on the frame, a polishing roller inside the polishing chamber, one end of the polishing roller being connected to a drive motor, and a spraying mechanism. The spraying mechanism includes a spraying adjustment device, which has a mounting plate that rotates with the polishing roller. The mounting plate has a water inlet and a spraying part, and an adjustment valve is provided between the water inlet and the spraying part. The adjustment valve adjusts the degree of connection between the water inlet and the spraying part according to the rotation speed of the mounting plate. Since the rotation speed of the mounting plate is related to the rice conveying speed, the spray volume is adaptively adjusted according to the rice conveying speed.

[0009] Furthermore, the regulating valve includes a movable valve core and a centrifugal drive assembly. The valve core is used to change the effective conduction area between the water inlet section and the spray section. The centrifugal drive assembly generates a centrifugal force related to the rotational speed when the mounting plate rotates. The centrifugal drive assembly is driven in conjunction with the valve core to drive the valve core to move.

[0010] Furthermore, the regulating valve also includes an elastic element that acts on the valve core or the centrifugal drive assembly, and the direction of the elastic force generated by the elastic element is opposite to the direction of the centrifugal force generated by the centrifugal drive assembly.

[0011] Furthermore, the centrifugal drive assembly is connected to the valve core via a transmission mechanism, which includes a first rack and a second rack that mesh with each other, and gears that mesh with the first rack and the second rack respectively. The first rack is connected to the valve core, and the second rack is connected to the centrifugal drive assembly.

[0012] Furthermore, the centrifugal drive assembly includes a centrifugal mass component, which is movably mounted on the mounting plate and can move radially along the mounting plate under the action of centrifugal force.

[0013] Furthermore, the degree of conduction refers to the number of spray holes in a conducting state between the water inlet section and the spray section. The regulating valve adjusts the spray volume by selectively opening or closing the spray holes at different positions in the spray section.

[0014] Furthermore, the water inlet includes multiple water inlet holes that are evenly distributed around the circumference of the mounting plate. The spray section is also multiple and corresponds to each water inlet hole in the circumference. Each spray section includes multiple spray holes arranged in the radial direction of the mounting plate.

[0015] Furthermore, the spray mechanism also includes a water supply component, which is connected to the water inlet on the mounting plate via a rotary joint to continuously supply water while the mounting plate is rotating.

[0016] Furthermore, the valve core is slidably disposed inside the mounting plate, and the valve core is provided with a shielding component, which is used to gradually shield or release different numbers of spray holes as the valve core moves.

[0017] Secondly, the technical solution of the present invention provides a spray application method for a horizontal polishing machine for rice processing, comprising the following steps:

[0018] The drive motor drives the polishing roller and the mounting plate to rotate synchronously. The centrifugal drive assembly generates a centrifugal force related to the rotational speed as the mounting plate rotates; The centrifugal force and the elastic force generated by the elastic element work together on the transmission mechanism to form a force balance adjustment. When the rotational speed of the mounting plate changes, the balance between centrifugal force and elastic force is broken, driving the valve core to move to a new equilibrium position. During the movement of the valve core, the shielding parts on the valve core gradually shield or release different numbers of spray holes, changing the degree of conductivity between the water inlet and the spray section; The spray volume increases with the increase of the polishing roller speed and decreases with the decrease of the polishing roller speed. Since the polishing roller speed is related to the rice conveying speed, the spray volume is adaptively adjusted according to the rice conveying speed.

[0019] The beneficial effects of this invention include: 1. This invention converts the rotational speed signal of the polishing roller into the displacement of the valve core through a centrifugal mass component, an elastic element, and a transmission mechanism. Since the rotational speed of the polishing roller is positively correlated with the rice conveying speed, the number of spray holes opened is positively correlated with the rice conveying speed. That is, the spray volume is reduced when the conveying speed is slow and increased when the conveying speed is fast, so that the humidification amount is precisely matched with the residence time of the rice grains, significantly improving the polishing effect. This solves the technical problem in the prior art that the spray volume cannot be automatically adjusted according to the changes in the rice conveying speed.

[0020] 2. This invention uses a purely mechanical structure to achieve adaptive speed adjustment, thereby achieving adaptive conveying speed adjustment. It requires no electronic components, has high reliability, and is suitable for processing environments with high humidity and high dust. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a horizontal polishing machine for rice processing according to an embodiment of the present invention; Figure 2This is a partial structural schematic diagram of a horizontal polishing machine for rice processing according to an embodiment of the present invention; Figure 3 yes Figure 2 A sectional view; Figure 4 yes Figure 3 Enlarged view of point A; In the diagram: 1. Frame; 2. Polishing chamber; 3. Polishing roller; 4. Drive motor; 5. Spray mechanism; 6. Spray adjustment device; 7. Mounting plate; 8. Water inlet; 81. Water inlet hole; 9. Spray section; 91. Spray hole; 10. Adjusting valve; 11. Valve core; 111. Shielding component; 112. Sealing component; 12. Centrifugal drive assembly; 121. Centrifugal mass component; 13. Elastic element; 14. Transmission mechanism; 141. First rack; 142. Second rack; 143. Gear; 15. Rotary joint. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] like Figure 1 As shown, this embodiment of the invention provides a horizontal polishing machine for rice processing, including a frame 1, a polishing chamber 2 on the frame 1, a polishing roller 3 inside the polishing chamber 2, and one end of the polishing roller 3 being connected to a drive motor 4. The horizontal polishing machine also includes a spraying mechanism 5.

[0024] like Figure 2 As shown, the spray mechanism 5 includes a spray adjustment device 6, which has a mounting plate 7 that rotates with the polishing roller 3. The mounting plate 7 is fixedly connected to the end of the polishing roller 3 and is coaxially arranged with the polishing roller 3, rotating synchronously with the polishing roller 3. Since the rotation speed of the polishing roller 3 directly determines the conveying speed of rice in the polishing chamber 2, the rotation speed of the mounting plate 7 is positively correlated with the conveying speed of rice.

[0025] The mounting plate 7 is provided with a water inlet 8 and a spray section 9. The water inlet 8 is located on the back of the mounting plate 7 and includes multiple water inlet holes 81, which are evenly distributed along the circumference of the mounting plate 7. In this embodiment, there are 8 water inlet holes 81, which are arranged at 45-degree intervals along the circumference.

[0026] Figure 3-4As shown, a spray section 9 is disposed on the front side of the mounting plate 7. There are multiple spray sections 9, each corresponding to a water inlet 81 in the circumferential direction. In this embodiment, the number of spray sections 9 is also 8. Each spray section 9 includes five spray holes 91 disposed along the radial direction of the mounting plate 7, and these five spray holes 91 are disposed on one side edge of the mounting plate 7. From the outer circumference of the mounting plate 7 towards the center, the five spray holes 91 are sequentially designated as the first spray hole, the second spray hole, the third spray hole, the fourth spray hole, and the fifth spray hole.

[0027] A regulating valve 10 is provided between the water inlet section 8 and the spray section 9. The regulating valve 10 adjusts the degree of conductivity between the water inlet section 8 and the spray section 9 according to the rotation speed of the mounting plate 7. Since the rotation speed of the mounting plate 7 is related to the rice conveying speed, the regulating valve 10 essentially achieves adaptive adjustment of the spray volume according to the rice conveying speed. Specifically, the regulating valve 10 achieves five-level adjustment of the spray volume by selectively opening or closing the spray holes 91 at different positions in the same spray section 9.

[0028] The regulating valve 10 includes a movable valve core 11 and a centrifugal drive assembly 12. A communicating cavity is provided inside the mounting plate 7 between the water inlet hole 81 and a corresponding set of spray holes 91, extending radially along the mounting plate 7. The valve core 11 is slidably disposed inside the communicating cavity. The valve core 11 is used to change the effective conduction area between the water inlet section 8 and the spray section 9. By moving the valve core 11, spray holes 91 at different radial positions can be gradually blocked or released.

[0029] When the centrifugal drive assembly 12 rotates with the mounting plate 7, it generates a centrifugal force that is positively correlated with the rotation speed. The centrifugal drive assembly 12 is in transmission cooperation with the valve core 11 to drive the valve core 11 to move.

[0030] The centrifugal drive assembly 12 includes a centrifugal mass component 121. In this embodiment, the centrifugal mass component 121 is a centrifugal ball made of high-density alloy material. The centrifugal mass component 121 is movably disposed in a guide hole provided on the mounting plate 7. The guide hole extends in the radial direction of the mounting plate 7, and the centrifugal mass component 121 can slide freely along the guide hole under the action of centrifugal force.

[0031] The regulating valve 10 also includes an elastic element 13, which in this embodiment is a compression spring. The elastic element 13 is disposed between the centrifugal drive assembly 12 and the mounting plate 7. One end of the elastic element 13 abuts against the inner bottom of the guide hole, and the other end abuts against the inner end face of the centrifugal mass 121. The elastic force generated by the elastic element 13 points towards the central axis of the mounting plate 7, and is opposite to the direction of the centrifugal force generated by the centrifugal drive assembly 12.

[0032] The centrifugal drive assembly 12 is connected to the valve core 11 via a transmission mechanism 14. In this embodiment, the transmission mechanism 14 includes a first rack 141 and a second rack 142 that mesh with each other, and a gear 143 that meshes with the first rack 141 and the second rack 142 respectively. The first rack 141 is fixedly connected to the valve core 11, and the second rack 142 is fixedly connected to the centrifugal mass component 121. The first rack 141 moves in the radial direction of the mounting plate 7, and the second rack 142 also moves in the radial direction of the mounting plate 7, but they are located on opposite sides of the gear 143 and move in opposite directions.

[0033] The valve core 11 is provided with a shielding element 111 and a sealing element 112.

[0034] A shielding member 111 is disposed on the side wall of the valve core 11 facing the spray section 9, and is used to selectively shield or release the spray holes 91 at different radial positions. A first mounting groove is formed on the side wall of the valve core 11 facing the spray section 9, extending along the length of the valve core 11. The shielding member 111 is embedded in the first mounting groove, the length of the shielding member 111 matching the length of the valve core 11, and the thickness of the shielding member 111 slightly exceeding the depth of the first mounting groove, causing the shielding member 111 to protrude from the side wall surface of the valve core 11, forming an elastic contact with the inner end face of the spray hole 91. The shielding member 111 is made of an elastic sealing material, in this embodiment silicone, which has good elasticity and wear resistance. The shielding member 111 has a long strip structure with a flat surface. The shielding member 111 moves with the valve core 11. When the shielding member 111 moves to the position of the spray hole 91, the shielding member 111 elastically abuts against the inner end face of the spray hole 91, thus shielding the spray hole 91. When the shielding member 111 leaves the position of the spray hole 91, the spray hole 91 is exposed, and the water can pass through smoothly.

[0035] A seal 112 is disposed on the side wall of the valve core 11 facing the water inlet 8, and is used to maintain a sealing contact with the inner wall of the communicating cavity during the movement of the valve core 11. A second mounting groove is formed on the side wall of the valve core 11 facing the water inlet 8, and the second mounting groove extends along the length of the valve core 11. The seal 112 is embedded in the second mounting groove, the length of the seal 112 matches the length of the valve core 11, and the thickness of the seal 112 is slightly greater than the depth of the second mounting groove, so that the seal 112 protrudes from the side wall surface of the valve core 11 to form an elastic sealing contact with the inner wall of the communicating cavity. The seal 112 is made of an elastic sealing material, which is silicone in this embodiment.

[0036] In this embodiment, the movement direction of the valve core 11 is opposite to that of the centrifugal mass component 121. Specifically, when the rotational speed of the mounting disc 7 increases, the centrifugal mass component 121 moves radially outward under the action of centrifugal force, driving the second rack 142 to move outward. The second rack 142 drives the first rack 141 and the valve core 11 to move radially inward through the gear 143, that is, to move towards the center of the mounting disc 7. When the rotational speed of the mounting disc 7 decreases, the centrifugal mass component 121 resets radially inward under the action of the elastic element 13, driving the valve core 11 to move radially outward, that is, to move towards the edge of the mounting disc 7.

[0037] As the valve core 11 moves, the shielding element 111 gradually shields or releases different numbers of spray holes 91. Specifically: When the valve core 11 is in the outermost position, the shielding member 111 shields the second to fifth spray holes, leaving only the first spray hole exposed, and the number of spray holes open is 1.

[0038] After the valve core 11 moves inward a first distance, the shielding member 111 shields the third to fifth spray holes, exposing the first and second spray holes, and the number of spray holes open is 2.

[0039] When the valve core 11 moves inward a second distance, the shielding member 111 shields the fourth and fifth spray holes, exposing the first to third spray holes, and the number of spray holes opened is 3.

[0040] When the valve core 11 moves inward a third distance, the shielding part 111 shields the fifth spray hole, exposing the first to fourth spray holes, and the number of spray holes open is 4.

[0041] When the valve core 11 moves to the innermost position, the shielding member 111 does not shield any spray holes, exposing all five spray holes, and the number of spray holes open is 5.

[0042] The seal 112 moves with the valve core 11. No matter where the valve core 11 moves, the seal 112 always maintains elastic contact with the inner wall of the communication cavity to prevent water from leaking from the gap between the valve core 11 and the inner wall of the communication cavity.

[0043] The spray mechanism 5 also includes a water supply assembly, which includes a water source, a water pump, a filter, and a water supply pipeline. The water supply pipeline is connected to the water inlet 8 on the mounting plate 7 via a rotary joint 15 to continuously supply water while the mounting plate 7 is rotating.

[0044] The working principle of the present invention will be described in detail below.

[0045] When the drive motor 4 drives the polishing roller 3 and the mounting plate 7 to rotate, the rotation speed of the mounting plate 7 is consistent with the real-time working speed of the polishing roller 3, and also consistent with the rice conveying speed.

[0046] In low-speed operation, the centrifugal mass component 121 experiences less centrifugal force, the elastic force of the elastic element 13 is greater than the centrifugal force, the centrifugal mass component 121 is located near the center of the mounting plate 7, the valve core 11 is located at the outermost position, the shielding component 111 shields the second to fifth spray holes, only the first spray hole is exposed, the spray volume is minimal, which matches the slower rice conveying speed.

[0047] As the rotation speed increases, the centrifugal force on the centrifugal mass component 121 increases, overcoming the elastic force of the elastic element 13 and moving outward. Through the transmission mechanism 14, the valve core 11 is driven to move inward, and the shielding component 111 gradually releases more spray holes, increasing the spray volume to match the faster rice conveying speed.

[0048] When the rotation speed decreases, the centrifugal force decreases, the elastic element 13 pushes the centrifugal mass element 121 to reset, the valve core 11 moves in the opposite direction, and the spray volume decreases accordingly.

[0049] The entire process is continuous and reversible, enabling adaptive adjustment of the spray volume according to the rice delivery speed.

[0050] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A horizontal polishing machine for rice processing, comprising a frame, a polishing chamber on the frame, a polishing roller inside the polishing chamber, one end of the polishing roller being connected to a drive motor, and the horizontal polishing machine for rice processing further comprising a spraying mechanism, characterized in that: The spraying mechanism includes a spraying adjustment device, which has a mounting plate that rotates with the polishing roller. The mounting plate is provided with a water inlet and a spraying part. An adjustment valve is provided between the water inlet and the spraying part. The adjustment valve adjusts the degree of conduction between the water inlet and the spraying part according to the rotation speed of the mounting plate. Since the rotation speed of the mounting plate is related to the rice conveying speed, the spray volume is adaptively adjusted according to the rice conveying speed.

2. The horizontal polishing machine for rice processing according to claim 1, characterized in that: The regulating valve includes a movable valve core and a centrifugal drive assembly. The valve core is used to change the effective conduction area between the water inlet and the spray section. The centrifugal drive assembly generates a centrifugal force related to the rotation speed when the mounting plate rotates. The centrifugal drive assembly is driven in conjunction with the valve core to drive the valve core to move.

3. The horizontal polishing machine for rice processing according to claim 2, characterized in that: The regulating valve also includes an elastic element that acts on the valve core or the centrifugal drive assembly. The direction of the elastic force generated by the elastic element is opposite to the direction of the centrifugal force generated by the centrifugal drive assembly.

4. The horizontal polishing machine for rice processing according to claim 2, characterized in that: The centrifugal drive assembly is connected to the valve core via a transmission mechanism. The transmission mechanism includes a first rack and a second rack that mesh with each other, and gears that mesh with the first rack and the second rack respectively. The first rack is connected to the valve core, and the second rack is connected to the centrifugal drive assembly.

5. The horizontal polishing machine for rice processing according to claim 2, characterized in that: The centrifugal drive assembly includes a centrifugal mass component, which is movably mounted on a mounting plate and can move radially along the mounting plate under the action of centrifugal force.

6. The horizontal polishing machine for rice processing according to claim 1, characterized in that: The degree of conduction refers to the number of spray holes that are in a conductive state between the water inlet section and the spray section. The regulating valve controls the selective opening or closing of spray holes at different positions in the spray section to adjust the spray volume.

7. The horizontal polishing machine for rice processing according to claim 1, characterized in that: The water inlet section includes multiple water inlet holes, which are evenly distributed along the circumference of the mounting plate. The spray section is also multiple and is arranged in a circumferential direction corresponding to each water inlet hole. Each spray section includes multiple spray holes arranged along the radial direction of the mounting plate.

8. The horizontal polishing machine for rice processing according to claim 1, characterized in that: The spray mechanism also includes a water supply component, which is connected to the water inlet on the mounting plate via a rotary joint to continuously supply water while the mounting plate is rotating.

9. The horizontal polishing machine for rice processing according to claim 2, characterized in that: The valve core is slidably disposed inside the mounting plate, and the valve core is provided with a shielding component, which is used to gradually shield or release different numbers of spray holes as the valve core moves.

10. A method of using a horizontal polishing machine for rice processing, characterized in that, Includes the following steps: The drive motor drives the polishing roller and the mounting plate to rotate synchronously. The centrifugal drive assembly generates a centrifugal force related to the rotational speed as the mounting plate rotates; The centrifugal force and the elastic force generated by the elastic element work together on the transmission mechanism to form a force balance adjustment. When the rotational speed of the mounting plate changes, the balance between centrifugal force and elastic force is broken, driving the valve core to move to a new equilibrium position. During the movement of the valve core, the shielding parts on the valve core gradually shield or release different numbers of spray holes, changing the degree of conductivity between the water inlet and the spray section; The spray volume increases with the increase of the polishing roller speed and decreases with the decrease of the polishing roller speed. Since the polishing roller speed is related to the rice conveying speed, the spray volume is adaptively adjusted according to the rice conveying speed.

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