Rice mill with crushing structure

Abstract

The present invention relates to the technical field of rice milling and crushing equipment, and specifically to a rice milling machine with a crushing structure, which aims to solve the problems of low efficiency and high equipment investment cost in traditional rice milling machines when processing byproduct rice husks. The rice milling machine integrates the functions of rice husking and rice husk crushing, and includes a rice milling bin and a crushing bin. A plurality of integrated transmission and rice milling units are arranged in the rice milling bin, and efficient rice milling is achieved through a spiral convex body section; a rice husk separation mechanism is arranged below the discharge port, and the rice husk is introduced into the crushing bin by wind force. The crushing bin has a built-in sieve plate and a crushing wheel, and uniform crushing is achieved through the cooperation of first and second crushing teeth. The entire system adopts a compact design, optimizes the spatial layout, reduces material transportation losses, improves production efficiency, simplifies the production process, and reduces costs.

Description

Technical Field

[0001] The invention relates to the technical field of rice milling and crushing equipment, and in particular to a rice milling machine with a crushing structure. Background Art

[0002] The information disclosed in the background of the invention is only intended to enhance the understanding of the overall background of the invention and should not be necessarily regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Rice mills are mainly used for rice hulling. Although this type of equipment can meet basic rice milling needs, it has some limitations in practical applications. First, traditional rice mills have limited processing capabilities for the byproduct rice husks, and often require additional crushing equipment, which not only increases the equipment investment cost, but also prolongs the production process and reduces overall efficiency. Secondly, the existing rice mills do not crush the byproduct rice husks uniformly; moreover, due to the lack of an integrated design, the material is easily damaged and contaminated when it is transported between different processes. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a rice milling machine with a crushing structure, aiming to realize the integrated operation of rice husking and crushing the by-product rice husk, simplify the production process, improve production efficiency and reduce production costs.

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

[0006] A rice milling machine with a crushing structure comprises a frame and a shell, wherein a rice milling bin is arranged at the top of the shell, and a crushing bin is arranged at the bottom; a feed inlet is arranged at one end of the rice milling bin, and a discharge outlet is arranged at the other end;

[0007] A plurality of integrated transmission and rice-milling units are arranged in the rice-milling bin;

[0008] A rice husk separation mechanism is provided below the discharge port;

[0009] The rice husk separation mechanism comprises a rice discharge channel, a separation port communicating with the crushing bin is provided at the top of the rice discharge channel, an air duct communicating with the rice discharge channel is provided on the side opposite to the separation port, and each of the air ducts corresponds to a transmission and rice milling integrated unit;

[0010] A downwardly inclined sieve plate is provided at the lower side of the separation port in the crushing bin, an air outlet is provided at the top of the side of the crushing bin opposite to the separation port, a pressure reduction chamber is provided outside the air outlet, and an air outlet is provided at the top of the pressure reduction chamber;

[0011] A crushed material outlet is arranged below the sieve plate, the sieve plate is provided with a plurality of sieve holes, the sieve plate comprises a plane sieve plate section, and a curved sieve plate section is arranged at the bottom end of the plane sieve plate section;

[0012] The upper side of the curved screen plate section is provided with a plurality of first crushing teeth arranged in an array, the sieve holes of the curved screen plate section are arranged in the gaps between the first crushing teeth, a crushing wheel is arranged concentrically above the curved screen plate section, and the crushing wheel is provided with a plurality of second crushing teeth arranged in an array and cooperating with the first crushing teeth;

[0013] The transmission and rice-milling integrated unit comprises a rice-milling cylinder, both ends of which are provided with mounting shafts, an outer wall of the rice-milling cylinder is provided with a rice-milling spiral, the rice-milling spiral is provided with a plurality of spiral convex body segments, and the rice-milling cylinder, the rice-milling spiral and the spiral convex body segments are all provided with a plurality of rice-milling protrusions;

[0014] The bottom of the rice milling bin is provided with a lining plate, and the upper side of the lining plate is provided with a plurality of cambered lining tracks adapted to the integrated transmission and rice milling unit.

[0015] Preferably, each transmission and rice milling integrated unit is provided with a corresponding associated transmission and air blowing mechanism, each of which comprises a driving wheel and a driving gear plate installed at the end of the mounting shaft, a transmission shaft is provided below the driving gear plate, a first transmission gear matched with the driving gear plate is installed at one end of the transmission shaft, and a second transmission gear is installed at the other end;

[0016] A corresponding fan blade is rotatably installed in each of the air ducts via a rotating shaft, and a third transmission gear that cooperates with the second transmission gear is installed at the end of the rotating shaft.

[0017] Preferably, the transmission between the driving gear plate and the third transmission gear is a speed increasing transmission;

[0018] The transmission shaft is installed on the top of the air duct through a support.

[0019] Preferably, a cleaning nozzle is installed at the end of each of the arc-surface linings for cleaning after each rice milling.

[0020] Preferably, the shell of the depressurization chamber is detachably mounted on the side wall of the rice milling bin, and the shell of the depressurization chamber is provided with a pipe inlet hole for matching the installation of the air inlet pipe of the cleaning nozzle.

[0021] Preferably, the air outlet and the gas outlet are both provided with corresponding filter screens; and the feed inlet is provided with a hopper.

[0022] The present invention has at least the following beneficial effects:

[0023] The present invention simplifies the production process by integrating rice hulling and byproduct rice husk crushing into the same equipment. This integrated design reduces the need for additional crushing equipment and reduces the initial investment cost. At the same time, since the material transfer process between different processes is reduced, it not only saves time, but also reduces the loss and pollution risk caused by material transfer. This directly improves the overall production efficiency.

[0024] The crushing bin of the present invention combines the screening and crushing functions, and can process the by-product rice husk more evenly, and produce crushed materials with more consistent particle sizes.

[0025] The transmission and rice milling integrated unit of the present invention has an efficient rice milling process. By setting a rice milling spiral with a spiral convex body section, continuous intermittent extrusion rice milling is realized. This design can ensure that the rice is subjected to uniform and effective pressure, thereby improving the efficiency and quality of husking. Moreover, by optimizing the movement mode of materials during the rice milling process, unnecessary energy loss is reduced, which helps to reduce energy consumption.

[0026] The crushing structure of the present invention adopts a combination of a sieve plate and a crushing wheel, which not only realizes the screening of rice husks, but also effectively crushes the coarse rice husks into fine particles through the cooperation between the first crushing teeth and the second crushing teeth, thereby improving the crushing efficiency. In addition, the design of the flat sieve plate and the curved sieve plate allows materials of different particle sizes to be separated, and fine powder is directly discharged through the sieve holes, while larger particles are further crushed, so that a finer product can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the internal structure of the present invention in the front direction as a whole;

[0028] Figure 2 It is a schematic diagram of the internal structure of the present invention in the overall side direction;

[0029] Figure 3 It is a structural schematic diagram of the integrated rice milling unit;

[0030] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0031] The reference numerals are as follows:

[0032] 1. Feed inlet; 11. Hopper; 2. Rice milling bin; 21. Liner; 211. Arc lining; 22. Cleaning nozzle; 3. Transmission and rice milling integrated unit; 31. Rice milling cylinder; 32. Rice milling spiral; 33. Spiral convex body section; 34. Rice milling protrusion; 4. Mounting shaft; 41. Driving wheel; 42. Driving gear plate; 421. Transmission shaft; 422. Second transmission gear; 423. Third transmission gear; 424. Rotating shaft; 5. Fan blade; 51. Air duct; 6. Rice outlet; 7. Crushing bin; 71. Crushing material outlet; 72. Flat screen plate; 73. Arc screen plate; 731. First crushing tooth; 732. Sieve hole; 74. Pressure reduction chamber; 741. Air outlet; 75. Separation port; 8. Crushing wheel; 81. Second crushing tooth; 9. Frame. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0034] Figures 1 to 4 A rice milling machine with a crushing structure is shown, comprising a frame 9 and a shell, wherein a rice milling bin 2 is disposed at the top of the shell, and a crushing bin 7 is disposed at the bottom; a feed port 1 is disposed at one end of the rice milling bin 2, and a discharge port is disposed at the other end;

[0035] The rice milling bin 2 is provided with a plurality of integrated rice milling transmission units 3;

[0036] A rice husk separation mechanism is provided below the discharge port;

[0037] The rice husk separation mechanism comprises a rice discharge channel 6, a separation port 75 communicating with the crushing bin 7 is provided at the top of the rice discharge channel 6, and an air duct 51 communicating with the rice discharge channel 6 is provided on a side opposite to the separation port 75;

[0038] A downwardly inclined sieve plate is provided at the lower side of the separation opening 75 in the crushing bin 7, an air outlet is provided at the top of the side of the crushing bin 7 opposite to the separation opening 75, a pressure reducing chamber 74 is provided outside the air outlet, and an air outlet 741 is provided at the top of the pressure reducing chamber 74;

[0039] A crushed material outlet 71 is provided below the sieve plate, and the sieve plate is provided with a plurality of sieve holes 732. The sieve plate includes a flat sieve plate 72 section, and a curved sieve plate 73 section is provided at the bottom end of the flat sieve plate 72 section.

[0040] The upper side surface of the arc surface screen plate 73 section is provided with a plurality of first crushing teeth 731 arranged in an array, the sieve holes 732 of the arc surface screen plate 73 section are arranged in the gaps between the first crushing teeth 731, and a concentrically arranged crushing wheel 8 is provided above the arc surface screen plate 73 section, and the crushing wheel 8 is provided with a plurality of second crushing teeth 81 arranged in an array and cooperating with the first crushing teeth 731.

[0041] The transmission and rice-milling integrated unit 3 comprises a rice-milling drum 31, both ends of which are provided with mounting shafts 4, a rice-milling spiral 32 is provided on the outer wall of the rice-milling drum 31, and a plurality of spiral convex sections 33 are provided on the rice-milling spiral 32, and the rice-milling drum 31, the rice-milling spiral 32 and the spiral convex sections 33 are all provided with a plurality of rice-milling protrusions 34;

[0042] A lining plate 21 is disposed at the bottom of the rice milling bin 2 , and a plurality of arc-surface lining tracks 211 adapted to the integrated rice milling transmission unit 3 are disposed on the upper side of the lining plate 21 .

[0043] Each transmission and rice milling integrated unit 3 is provided with a corresponding associated transmission and air blowing mechanism, each of which includes a driving wheel 41 and a driving gear plate 42 installed at the end of the installation shaft 4, a transmission shaft 421 is provided below the driving gear plate 42, one end of the transmission shaft 421 is provided with a first transmission gear that is in transmission with the driving gear plate 42, and the other end is provided with a second transmission gear 422;

[0044] A corresponding fan blade 5 is rotatably mounted in each of the air ducts 51 via a rotating shaft 424 , and a third transmission gear 423 that cooperates with the second transmission gear 422 is mounted at the end of the rotating shaft 424 .

[0045] In this way, each integrated transmission and rice-milling unit 3 cooperates with the corresponding associated transmission and air blowing mechanism to complete the rice milling and transmission as well as the separation of rice husk by air blowing.

[0046] Of course, the mounting shafts 4 of each integrated transmission and rice-milling unit 3 are also transmission-connected (not shown in the figure), and can be connected through corresponding transmission sprockets, so that integrated rotation can be easily achieved, and no further explanation will be given.

[0047] The principle of the present invention is that the rice milling spiral 32 of the transmission rice milling integrated unit 3 plays a role in transmitting the material through its spiral structure, and at the same time, the spiral convex body segment 33 on the rice milling spiral 32 plays the role of a cam, playing a major (stronger) rice milling effect there, and playing a secondary (weaker) rice milling effect between the two spiral convex body segments 33, so that each transmission rice milling integrated unit 3 produces a continuous intermittent extrusion rice milling, and after multiple intermittent extrusion rice milling, the material reaches the other end. The effect of efficient and good hulling has been achieved, thereby creating a good foundation for the subsequent rice hull crushing.

[0048] Under the action of the associated transmission blower mechanism, rice husks and poor quality rice grains are blown into the crushing bin 7 through the separation port 75, and fall onto the plane screen plate 72 under the action of gravity, and slide forward along the plane screen plate 72 under the action of residual wind and inertia. In this process, the by-products are screened, and the finer rice husk powder after screening falls and comes out through the crushed material outlet 71;

[0049] The coarse rice husks and poor quality rice grains enter the curved screen plate 73, and the coarse materials are crushed and refined by the first crushing teeth 731 on the curved screen plate 73 and the second crushing teeth 81 on the crushing wheel 8, and the second crushing teeth 81 and the screen holes 732. The refined crushed materials fall through the screen holes 732 and go out through the crushed material outlet 71. At this point, the classification and crushing of the by-products produced by rice milling are completed.

[0050] The transmission between the driving toothed disc 42 and the third transmission gear 423 is a speed increasing transmission; the transmission shaft 421 is installed on the top of the air duct 51 through a support. The space optimization layout is fully utilized, so that the function of separating the rice husk by the associated transmission air blowing mechanism is smoothly realized, and at the same time, the structure is more compact.

[0051] Each end of the arc lining 211 is provided with a cleaning nozzle 22. The arrangement of the arc lining 211 helps to play the role of rice milling and transmission of the integrated rice milling unit 3, and is also conducive to cleaning after each rice milling with the cleaning nozzle 22, wherein the cleaning nozzle 22 can be a pulse blowing nozzle.

[0052] The shell of the depressurization chamber 74 is detachably mounted on the side wall of the rice milling bin 2 to facilitate the installation of the rice milling integrated unit 3 and the cleaning nozzle 22 . The shell of the depressurization chamber 74 is provided with an inlet hole to cooperate with the installation of the air inlet pipe of the cleaning nozzle 22 .

[0053] The air outlet and the gas outlet 741 are both provided with corresponding filter screens to prevent coarse materials from entering the pressure reducing chamber 74 or entering the workshop through the pressure reducing chamber 74 to cause pollution.

[0054] The feed inlet 1 is provided with a hopper 11, and the bottoms of the crushed material outlet 71 and the rice outlet channel 6 are both funnel-shaped.

[0055] In summary, the rice milling machine integrates the functions of rice hulling and rice husk crushing, and includes a rice milling bin 2 and a crushing bin 7. A plurality of integrated transmission and rice milling units 3 are arranged in the rice milling bin 2, and efficient rice milling is achieved through the spiral convex body section 33; a rice husk separation mechanism is arranged below the discharge port, and the rice husk is introduced into the crushing bin 7 by wind force. The crushing bin 7 has a built-in sieve plate and a crushing wheel 8, and uniform crushing is achieved through the cooperation of the first crushing teeth 731 and the second crushing teeth 81. The entire system adopts a compact design, optimizes the spatial layout, reduces material transfer losses, improves production efficiency, simplifies the production process, and reduces costs.

[0056] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0057] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0058] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rice milling machine with a crushing structure, comprising a frame and a shell, wherein a rice milling bin is arranged at the top of the shell, and a crushing bin is arranged at the bottom; a feed port is arranged at one end of the rice milling bin, and a discharge port is arranged at the other end; the characteristics are: A plurality of integrated transmission and rice-milling units are arranged in the rice-milling bin; A rice husk separation mechanism is provided below the discharge port; The rice husk separation mechanism comprises a rice discharge channel, a separation port communicating with the crushing bin is provided at the top of the rice discharge channel, and a plurality of air ducts corresponding to the integrated transmission and rice milling units and communicating with the rice discharge channel are provided on the side opposite to the separation port; A downwardly inclined sieve plate is provided at the lower side of the separation port in the crushing bin, an air outlet is provided at the top of the side of the crushing bin opposite to the separation port, a pressure reduction chamber is provided outside the air outlet, and an air outlet is provided at the top of the pressure reduction chamber; A crushed material outlet is arranged below the sieve plate, the sieve plate is provided with a plurality of sieve holes, the sieve plate comprises a plane sieve plate section, and a curved sieve plate section is arranged at the bottom end of the plane sieve plate section; The upper side of the curved screen plate section is provided with a plurality of first crushing teeth arranged in an array, the sieve holes of the curved screen plate section are arranged in the gaps between the first crushing teeth, a crushing wheel is arranged concentrically above the curved screen plate section, and the crushing wheel is provided with a plurality of second crushing teeth arranged in an array and cooperating with the first crushing teeth; The transmission and rice-milling integrated unit comprises a rice-milling cylinder, both ends of which are provided with mounting shafts, an outer wall of the rice-milling cylinder is provided with a rice-milling spiral, the rice-milling spiral is provided with a plurality of spiral convex body segments, and the rice-milling cylinder, the rice-milling spiral and the spiral convex body segments are all provided with a plurality of rice-milling protrusions; The bottom of the rice milling bin is provided with a lining plate, and the upper side of the lining plate is provided with a plurality of cambered lining tracks adapted to the integrated transmission and rice milling unit.

2. The rice mill with a crushing structure as claimed in claim 1, characterized in that: Each transmission and rice milling integrated unit is provided with a corresponding associated transmission and air blowing mechanism, each of which comprises a driving wheel and a driving gear plate installed at the end of the installation shaft, a transmission shaft is provided below the driving gear plate, a first transmission gear matched with the driving gear plate is installed at one end of the transmission shaft, and a second transmission gear is installed at the other end; A corresponding fan blade is rotatably installed in each of the air ducts via a rotating shaft, and a third transmission gear that cooperates with the second transmission gear is installed at the end of the rotating shaft.

3. The rice mill with a crushing structure as claimed in claim 2, characterized in that: The transmission between the driving gear plate and the third transmission gear is a speed increasing transmission; The transmission shaft is installed on the top of the air duct through a support.

4. The rice mill with a crushing structure as claimed in claim 1, characterized in that: A cleaning nozzle is installed at the end of each arc surface lining road for cleaning after each rice milling.

5. The rice mill with a crushing structure as claimed in claim 4, characterized in that: The shell of the decompression chamber is detachably mounted on the side wall of the rice milling bin, and a pipe inlet hole is provided in the shell of the decompression chamber to match the installation of the air inlet pipe of the cleaning nozzle.

6. The rice milling machine with a crushing structure as claimed in any one of claims 1 to 5, characterized in that: The air outlet and the gas outlet are both provided with corresponding filter screens; the feed inlet is provided with a hopper.

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