Rice specific gravity stoning machine

Abstract

The utility model discloses a rice specific gravity stoning machine which comprises a machine frame, a circulating fan and a stoning machine body, the circulating fan is fixedly installed on the surface of the machine frame, the two ends of the circulating fan are provided with an air outlet hopper and a backflow pipe respectively, and the stoning machine body comprises a separation box, a sieve plate, a top cover and a vibrator fixed to the bottom face of the separation box. A clean grain outlet and an impurity outlet are formed in one end of the bottom face of the separation box, the impurity outlet is close to the end of the separation box, the sieve plate is fixedly installed on the inner side of the separation box, the top cover is detachably fixed to the top face of the separation box, and a feeding port is formed in the surface of the top cover. According to the utility model, screening and specific gravity float separation are integrated, the whole stone removing machine main body is driven by the vibrator to vibrate and move, rice grains jump at high frequency in the reciprocating motion of the sieve plate until the rice grains pass through sieve holes in the surface of the sieve plate, and large-specific-gravity impurities such as stones and the like gradually descend, slide and are separated under the action of the inclined surface of the sieve plate; by combining the double effects of screening and specific gravity float separation, the separation effect is improved, and rice grain waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice specific gravity stone removing machine. Background Art

[0002] The specific gravity stone remover is a kind of impurity removal equipment that utilizes the difference in density and suspension speed between granular materials (paddy, brown rice, rice, wheat, etc.) and minerals (mainly sidewalk stones, etc.), and uses mechanical wind power and a screen surface that reciprocates in a certain trajectory to separate minerals from granular materials. When the specific gravity stone remover is working, the material continuously enters the middle of the stone removal screen surface from the feed hopper. Due to the vibration of the screen surface and the airflow passing through the material layer, the porosity between the particles increases, the material is in a fluidized state, and the automatic classification is promoted. The heavy stones sink to the bottom layer and contact the screen surface, and the grains with small specific gravity float to the upper layer. Under the push of gravity, inertia and continuous feeding, they slide relative to the stone removal screen surface to the clean grain outlet; while the heavy stones are less affected by the inertia force of the screen surface vibration system and the airflow, and slide relative to the stone removal screen surface, and move to the selection area through the stone gathering area. Since the materials are all in contact on the upper layer of the screen surface, a large amount of rice grains will be mixed into the removed stones and exported together with the stones, causing great waste.

[0003] In view of this, research and improvement are carried out on the existing problems, and a rice specific gravity stone removing machine is provided to solve the current problems. The purpose is to solve the problems and improve the practical value through this technology. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a rice specific gravity stone removing machine, comprising: a frame, a circulating fan and a stone removing machine body, the circulating fan is fixedly installed on the surface of the frame and has an air outlet and a return pipe at both ends respectively, the stone removing machine body comprises a separation box, a sieve plate, a top cover and a vibrator fixed to the bottom surface of the separation box, one end of the bottom surface of the separation box is provided with a clean grain outlet and an impurity outlet, and the impurity outlet is close to the end of the separation box, the sieve plate is fixedly installed on the inner side of the separation box, the top cover is detachably fixed to the top surface of the separation box and has a feeding port on the surface, the end of the air outlet is provided with a corrugated connecting pipe connected to the bottom surface of the separation box, and the end of the return pipe is connected to one end of the separation box.

[0006] In a preferred example, the utility model can be further configured as follows: the separation box, the sieve plate and the top cover are arranged to be inclined upward, and the clean grain outlet and the feeding port are respectively located at the inclined lower end and upper end of the separation box.

[0007] In a preferred example, the utility model can be further configured as follows: a plurality of evenly distributed sieve holes are provided on the surface of the sieve plate for rice grains to pass through and to isolate impurities with larger diameters, and the sieve plate is arranged in parallel with the separation box.

[0008] In a preferred example, the utility model can be further configured as follows: a plurality of ventilation holes are provided on the bottom surface of the separation box for inputting airflow from the circulating fan, and the diameter of the ventilation holes is smaller than the size of rice grains to prevent rice grains from entering the interior of the air outlet hopper.

[0009] In a preferred example, the utility model can be further configured as follows: one end of the separation box is fixedly connected to a filter cartridge for capturing dust, and the filter cartridge is sleeved inside the return pipe.

[0010] In a preferred example, the utility model can be further configured as follows: the clean grain outlet and the impurity outlet are arranged in parallel, a partition abutting against the bottom surface of the separation box is provided between the clean grain outlet and the impurity outlet, and the partition abuts against the bottom surface of the sieve plate.

[0011] The beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, by integrating screening with gravity flotation separation, a vibrator is used to drive the whole vibration movement of the stone remover body, so that the rice grains are made to jump at a high frequency during the reciprocating motion of the screen plate until they pass through the sieve holes on the surface of the screen plate, and the impurities with large specific gravity such as stones gradually slide down and separate under the action of the inclined surface of the screen plate, combining the dual effects of screening and gravity flotation separation, improving the separation effect and avoiding the waste of rice grains.

[0013] 2. In the utility model, by setting up a sieve plate structure, rice grains can be quickly sieved and separated, rather than staying on the sieve surface to cause material accumulation, thereby avoiding the weakening of the vibration effect due to a large amount of material accumulation and the incomplete separation caused by continuous supply of materials, and can effectively speed up the separation work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a stone removal machine according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the main body exploded structure of a stone removal machine according to one embodiment of the utility model;

[0017] Figure 4 The figure is a schematic diagram of the structure of a circulating fan according to an embodiment of the utility model.

[0018] Reference numerals:

[0019] 100, frame; 110, support spring;

[0020] 200, circulating fan; 210, air outlet hopper; 220, return pipe; 211, corrugated connecting pipe;

[0021] 300. De-stoner main body; 310. Separation box; 320. Screen plate; 330. Top cover; 340. Vibrator; 311. Clean grain outlet; 312. Impurity outlet; 313. Partition. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] A rice specific gravity stone removing machine provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0024] Combination Figure 1-4 As shown, the utility model provides a rice specific gravity stone removing machine, comprising: a frame 100, a circulating fan 200 and a stone removing machine body 300, the circulating fan 200 is fixedly installed on the surface of the frame 100 and is respectively provided with an air outlet 210 and a return pipe 220 at both ends, the stone removing machine body 300 comprises a separation box 310, a sieve plate 320, a top cover 330 and a vibrator 340 fixed to the bottom surface of the separation box 310, a clean grain outlet 311 and an impurity outlet 312 are provided at one end of the bottom surface of the separation box 310, and the impurity outlet 312 is close to the end of the separation box 310, the sieve plate 320 is fixedly installed on the inner side of the separation box 310, the top cover 330 is detachably fixed to the top surface of the separation box 310 and is provided with a feeding port on the surface, the end of the air outlet 210 is provided with a corrugated connecting pipe 211 connected to the bottom surface of the separation box 310, and the end of the return pipe 220 is connected to one end of the separation box 310.

[0025] In this embodiment, the separation box 310, the sieve plate 320 and the top cover 330 are arranged to be inclined upward, and the clean grain outlet 311 and the feeding port are respectively located at the inclined lower end and upper end of the separation box 310.

[0026] In this embodiment, a plurality of evenly distributed sieve holes are provided on the surface of the sieve plate 320 for rice grains to pass through and to isolate impurities with larger diameters. The sieve plate 320 is arranged in parallel with the separation box 310 .

[0027] Specifically, the rice grains are made to bounce at a high frequency during the reciprocating motion of the sieve plate 320 until they pass through the sieve holes on the surface of the sieve plate 320, and impurities with a large specific gravity such as stones gradually slide downward and separate under the action of the inclined surface of the sieve plate 320. The dual effects of screening and gravity flotation separation are combined to improve the separation effect and avoid waste of rice grains.

[0028] In this embodiment, a plurality of ventilation holes are provided on the bottom surface of the separation box 310 for the circulation fan 200 to input airflow, and the diameter of the ventilation holes is smaller than the size of rice grains to prevent rice grains from entering the interior of the air outlet hopper 210 .

[0029] In this embodiment, one end of the separation box 310 is fixedly connected to a filter cartridge for capturing dust, and the filter cartridge is sleeved inside the return pipe 220 .

[0030] Specifically, a filter cartridge is provided at the return air end to capture small fine rice grains and dust to achieve a purification effect.

[0031] In this embodiment, the clean grain outlet 311 and the impurity outlet 312 are arranged in parallel, and a partition 313 abutting against the bottom surface of the separation box 310 is provided between the clean grain outlet 311 and the impurity outlet 312, and the partition 313 abuts against the bottom surface of the sieve plate 320.

[0032] Specifically, the partition plate 313 is used to isolate the clean grain outlet 311 and the impurity outlet 312 and to isolate the impurity outlet 312 from the space below the sieve plate 320 , so that all the rice grains are discharged from the clean grain outlet 311 after passing through the sieve plate 320 .

[0033] The working principle and use process of this utility model:

[0034] Driven by the vibration of the vibrator 340, the whole high-frequency vibration of the stone removal machine body 300 is realized. The impurities entering the separation box 310 jump on the surface of the sieve plate 320 and gradually fall through the sieve holes on the surface of the sieve plate 320 to the inside of the separation box 310 and are discharged through the clean grain outlet 311. However, large particle impurities such as stones are subjected to greater impact force during the vibration of the sieve plate 320 due to their larger specific gravity. It is difficult for them to pass through the through holes on the surface of the sieve plate 320, and they will gradually slide through the surface of the separation box 310 and be discharged through the impurity outlet 312. In addition, under the circulating airflow conveying of the circulating fan 200, airflow thrust is formed on the surface of rice grains and granular stones, further preventing stones from passing through the sieve holes on the surface of the sieve plate 320.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rice specific gravity stone removing machine, characterized in that: include: A frame (100), a circulating fan (200) and a stone removal machine body (300), wherein the circulating fan (200) is fixedly mounted on the surface of the frame (100) and is provided with an air outlet (210) and a return pipe (220) at both ends thereof, respectively; the stone removal machine body (300) comprises a separation box (310), a sieve plate (320), a top cover (330) and a vibrator (340) fixed to the bottom surface of the separation box (310); and a clean grain outlet (311) is provided at one end of the bottom surface of the separation box (310). ) and an impurity outlet (312), and the impurity outlet (312) is close to the end of the separation box (310), the sieve plate (320) is fixedly installed on the inner side of the separation box (310), the top cover (330) is detachably fixed to the top surface of the separation box (310) and has a feeding port on the surface, the end of the air outlet hopper (210) is provided with a corrugated connecting pipe (211) connected to the bottom surface of the separation box (310), and the end of the return pipe (220) is connected to one end of the separation box (310).

2. A rice specific gravity stone removing machine according to claim 1, characterized in that: The separation box (310), the sieve plate (320) and the top cover (330) are arranged in an inclined upward direction, and the clean grain outlet (311) and the feeding port are respectively located at the inclined lower end and upper end of the separation box (310).

3. A rice specific gravity stone removing machine according to claim 1, characterized in that: The surface of the sieve plate (320) is provided with a plurality of evenly distributed sieve holes for allowing rice grains to pass through and for isolating impurities with larger diameters. The sieve plate (320) is arranged in parallel with the separation box (310).

4. A rice specific gravity stone removing machine according to claim 1, characterized in that: The bottom surface of the separation box (310) is provided with a plurality of ventilation holes for the circulation fan (200) to input airflow, and the diameter of the ventilation holes is smaller than the size of rice grains to prevent rice grains from entering the interior of the air outlet hopper (210).

5. The rice specific gravity stone removing machine according to claim 1, characterized in that: One end of the separation box (310) is fixedly connected to a filter cartridge for capturing dust, and the filter cartridge is sleeved inside the return pipe (220).

6. The rice specific gravity stone removing machine according to claim 1, characterized in that: The clean grain outlet (311) and the impurity outlet (312) are arranged in parallel, and a partition (313) abutting against the bottom surface of the separation box (310) is provided between the clean grain outlet (311) and the impurity outlet (312), and the partition (313) abuts against the bottom surface of the sieve plate (320).

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