An electric stone mill for grinding green wheat kernels
By introducing a screen tank design that combines a vibrating motor and springs into the electric stone mill, the problem of needing to stop the machine for cleaning during screening has been solved, achieving uninterrupted screening and efficient grinding, and improving the operational stability and ease of use of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU ZHUTUN RICE NOODLES FOOD CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-31
AI Technical Summary
Existing electric stone mills require machine shutdown and disassembly for cleaning after impurities are trapped in the screening structure, which affects grinding efficiency and causes inconvenience.
A screen trough with a vibrating motor and vibrating spring is designed to achieve stable vibrating screening. The guide slots and insert plates ensure smooth operation. The screen trough is detachable for easy and quick cleaning. The vibration can be quickly stopped by the combination of a stop block and a stop plate. Two processing boxes are used alternately for uninterrupted screening.
It enables continuous screening without stopping the machine, improving screening efficiency and equipment stability, avoiding efficiency losses caused by downtime for cleaning, and enhancing ease of use and safety.
Smart Images

Figure CN224573815U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stone mill technology, and specifically relates to an electric stone mill for grinding green wheat kernels. Background Technology
[0002] During the processing of green barley kernels, an electric stone mill is needed to grind them.
[0003] While existing electric stone mills can meet the basic requirements for grinding barley kernels and can use a screening structure to screen the ground material and remove large particles of impurities that are not fully ground, after a period of operation, a lot of impurities often remain on the screening structure. At this time, the device needs to be stopped and the screening structure needs to be disassembled, cleaned and reinstalled before it can continue to screen the ground material. Therefore, it not only affects the overall efficiency of grinding barley kernels, but also causes great inconvenience to users. Utility Model Content
[0004] In view of this, this utility model addresses the shortcomings of the existing technology by providing an electric stone mill for grinding green wheat kernels. It not only meets the basic requirements for grinding green wheat kernels and screening the ground material, but also eliminates the need for users to stop the device to wait for the screening structure to be disassembled and cleaned, thus more fully meeting people's usage needs.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an electric stone mill for grinding green wheat kernels, including a base, a frame on the base, a lower fixed grinding disc and an upper rotating grinding disc on the frame, a discharge chute on the side of the lower fixed grinding disc, two discharge pipes at the lower end of the discharge chute, control valves on the two discharge scrapers, and a processing box corresponding to the two discharge pipes vibrating on the base, a feeding pipe at the bottom of the processing box, and a detachable sieve tank on the processing box.
[0006] As a further improvement of this utility model, a vibration spring is provided on the base, and a mounting frame connected to the vibration spring is provided at the bottom of the processing box. A vibration motor is also provided on the processing box. Through the synergistic action of the vibration motor and the vibration spring, the screening tank generates stable vibration, thereby improving screening efficiency and the accuracy of material separation.
[0007] As a further improvement of this utility model, a guide slot is also provided on the base, and a guide plate that plugs into the guide slot is provided on the mounting frame. The cooperative design of the guide slot and the guide plate ensures that the processing box runs smoothly during vibration, avoids deviation or shaking, improves the safety and stability of equipment operation, and prevents the vibration spring from being easily damaged by deformation.
[0008] As a further improvement of this utility model, a support frame is provided on the inner wall of the processing box, and a retaining frame is provided on the side end of the screening tank to engage with the support frame. The retaining frame is provided with a hand-tightening bolt for connecting to the support frame, and the support frame is provided with a threaded connection hole for connecting to the hand-tightening bolt. The screening tank adopts a detachable design, connected by the retaining frame, support frame, and hand-tightening bolt, making operation simple and convenient for users to quickly replace or clean the screen, thus improving the ease of use of the equipment.
[0009] As a further improvement of this utility model, a handle is also provided on the card holder frame.
[0010] As a further improvement of this utility model, a fixing plate is also provided on the side of the frame, a linear slide is provided on the fixing plate, a braking block is provided on the slide seat of the linear slide, and braking pads are provided on both sides of the braking block for abutting and braking against the corresponding guide plate.
[0011] As a further improvement of this utility model, a U-shaped support frame is also provided on the fixed plate, and a guide sleeve that is slidably connected to the support frame is also provided on the slide block of the linear slide table.
[0012] As a further improvement of this utility model, a rotating shaft is vertically and rotatably mounted on the lower fixed grinding disc, and the upper rotating grinding disc is connected to the rotating shaft. A reduction drive motor is also mounted on the lower fixed grinding disc, and a gear transmission assembly is provided between the output shaft of the reduction drive motor and the rotating shaft. The cooperation between the reduction drive motor and the gear transmission assembly provides stable power to the upper rotating grinding disc, ensuring the uniformity and efficiency of the grinding process.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] Firstly, through the cooperation of two discharge pipes, two control valves, two vibrating processing boxes, two feeding pipes and a screening tank, the ground materials can be screened alternately without having to stop the machine or pause the grinding of green wheat kernels in order to clean the screening structure, thus effectively avoiding affecting the overall work efficiency.
[0015] Secondly, through the cooperation of the linear slide, brake block and brake pad, the guide plate can be quickly stopped and fixed, so that the processing box and screen tank that need to stop vibrating can quickly stop vibrating. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the rotating shaft, bearing, speed reduction drive motor and gear transmission assembly of this utility model;
[0019] Figure 3 This is a structural schematic diagram of the fixing plate, linear slide, braking block, and braking pad of this utility model;
[0020] Figure 4 This is a structural schematic diagram of the support frame and guide sleeve of this utility model.
[0021] In the diagram: 101, base; 102, frame; 103, lower fixed grinding disc; 104, upper rotating grinding disc; 105, discharge chute; 106, discharge pipe; 107, control valve; 108, processing box; 109, discharge pipe; 110, screening tank; 111, vibration spring; 112, mounting frame; 113, vibration motor; 114, guide slot; 115, guide plate; 116, rotating shaft; 117, bearing; 118, geared drive motor; 119, gear transmission assembly; 120, feed inlet; 201, support frame; 202, clamping frame; 203, hand-tightening bolt; 204, handle; 301, fixing plate; 302, linear slide; 303, brake block; 304, brake pad; 305, support frame; 306, guide sleeve. Detailed Implementation
[0022] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.
[0023] like Figure 1 As shown, an electric stone mill for grinding green wheat kernels includes a base 101, a frame 102 mounted on the base 101, a lower fixed grinding disc 103 and an upper rotating grinding disc 104 mounted on the frame 102, a discharge chute 105 mounted on the side end of the lower fixed grinding disc 103, two discharge pipes 106 mounted on the lower end of the discharge chute 105, control valves 107 mounted on the two discharge scrapers respectively, a processing box 108 vibrating on the base 101 corresponding to the two discharge pipes 106 respectively, a discharge pipe 109 mounted on the bottom of the processing box 108, and a detachable sieve 110 mounted on the processing box 108.
[0024] like Figure 1As shown, a vibration spring 111 is provided on the base 101, and a mounting frame 112 connected to the vibration spring 111 is provided at the bottom of the processing box 108. A vibration motor 113 is also provided on the processing box 108. Through the synergistic action of the vibration motor 113 and the vibration spring 111, the screen tank 110 generates stable vibration, which improves the screening efficiency and the accuracy of material separation.
[0025] like Figure 1 As shown, a guide slot 114 is also provided on the base 101, and a guide plate 115 that plugs into the guide slot 114 is provided on the mounting frame 112. The cooperative design of the guide slot 114 and the guide plate 115 ensures that the processing box 108 runs smoothly during vibration, avoids deviation or shaking, improves the safety and stability of equipment operation, and prevents the vibration spring 111 from being easily damaged by deformation.
[0026] like Figure 3 , 4 As shown, a support frame 201 is provided on the inner wall of the processing box 108, and a retaining frame 202 is provided on the side end of the screening tank 110 to engage with the support frame 201. The retaining frame 202 is provided with a hand-tightening bolt 203 for connecting with the support frame 201, and the support frame 201 is provided with a threaded connection hole for connecting with the hand-tightening bolt 203. By simply engaging the retaining frame 202 with the support frame 201 and then threading the hand-tightening bolt 203 through the threaded connection hole on the side wall of the retaining frame 202, flexible installation of the retaining frame 202 and the screening tank 110 can be achieved. Conversely, by separating the hand-tightening bolt 203 from the threaded connection hole and releasing the connection between the retaining frame 202 and the support frame 201, the retaining frame 202 and the screening tank 110 can be removed, facilitating quick replacement or cleaning of the screen and improving the ease of use of the equipment.
[0027] like Figure 1 , 2 As shown, a rotating shaft 116 is vertically and rotatably mounted on the lower fixed grinding disc 103. The lower fixed grinding disc 103 is rotatably connected to the rotating shaft 116 via a bearing 117. The upper rotating grinding disc 104 is connected to the rotating shaft 116. A reduction drive motor 118 is also mounted on the lower fixed grinding disc 103. A gear transmission assembly 119 is provided between the output shaft of the reduction drive motor 118 and the rotating shaft 116. The cooperation between the reduction drive motor 118 and the gear transmission assembly 119 provides stable power to the upper rotating grinding disc 104, ensuring the uniformity and efficiency of the grinding process.
[0028] Turn on the geared drive motor 118, which drives the rotating shaft 116 to rotate through the gear transmission assembly 119. This drives the relative rotation between the upper rotating grinding disc 104 and the lower fixed grinding disc 103. The green wheat kernels enter the gap between the upper rotating grinding disc 104 and the lower fixed grinding disc 103 through the feed port 120 on the upper rotating grinding disc 104. Through the squeezing, shearing and friction of the two grinding discs, they are finally ground into powder or granular material.
[0029] The ground material is collected by the discharge chute 105 at the side of the lower fixed grinding disc 103 and guided by a discharge pipe 106 to the processing box 108 and the screening tank 110 below for screening. At the same time, the corresponding vibration motor 113 can be started, which drives the processing box 108 and the screening tank 110 inside to generate stable vibration through the mounting frame 112 and the vibration spring 111, ensuring screening efficiency. The guide plate 115 cooperates with the guide slot 114 on the base 101 to constrain the vibration direction of the processing box 108 and prevent deviation or tilting.
[0030] After the material enters the processing box 108, it is classified by the screen of the screening tank 110. The qualified fine powder (meeting the particle size requirements) falls to the bottom of the box through the screen and is discharged to the collection container through the feed pipe 109. The large particles that do not meet the standards remain on the screening tank 110 and can be reprocessed (such as being returned to the grinding disc for re-grinding) or collected separately. The two processing boxes 108 work alternately: when one of the screening tanks 110 needs to be cleaned, its corresponding control valve 107 is closed to stop receiving materials, and the other processing box 108 continues to work to ensure that the grinding process is uninterrupted. After that, the first screening tank 110 can be disassembled and cleaned.
[0031] According to another embodiment of the present invention, such as Figure 1 , 3 As shown, a handle 204 is also provided on the clamping frame 202. The handle 204 allows for easy movement of the clamping frame 202 and the filter tank 110, easy disassembly and assembly of the filter tank 110, and easy cleaning of the impurities trapped in the filter tank 110.
[0032] According to another embodiment of the present invention, such as Figure 3 , 4As shown, a fixing plate 301 is also provided on the side of the frame 102. A linear slide 302 is provided on the fixing plate 301. A brake block 303 is provided on the slide of the linear slide 302. Brake pieces 304 are provided on both sides of the brake block 303 for braking against the corresponding guide plates. When a sieve tank 110 needs to be cleaned, after the corresponding vibration motor 113 is stopped, the slide of the linear slide 302 can move the brake block 303 toward a guide plate 115 near the sieve tank 110, causing the corresponding brake pieces 304 to come into contact with the guide plate 115, thus assisting in stopping the vibration of the corresponding processing box 108 and the sieve tank 110.
[0033] According to another embodiment of the present invention, such as Figure 4 As shown, a U-shaped support frame 305 is also provided on the fixed plate 301, and a guide sleeve 306 that is slidably connected to the support frame 305 is also provided on the slide of the linear slide table 302. Through the sliding cooperation between the support frame 305 and the guide sleeve 306, the slide of the linear slide table 302 can slide stably.
[0034] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. An electric stone mill for grinding green wheat kernels, comprising a base (101) and a frame (102) mounted on the base (101), characterized in that: The frame (102) is provided with a lower fixed grinding disc (103) and an upper rotating grinding disc (104). The lower fixed grinding disc (103) is provided with a discharge chute (105) at its side end. The lower end of the discharge chute (105) is provided with two discharge pipes (106). The two discharge scrapers are respectively provided with control valves (107). The base (101) is provided with a vibrating processing box (108) corresponding to the two discharge pipes (106). The bottom of the processing box (108) is provided with a discharge pipe (109). The processing box (108) is detachably provided with a screen tank (110).
2. The electric stone mill for grinding green wheat kernels as described in claim 1, characterized in that: A vibration spring (111) is provided on the base (101), and an installation frame (112) connected to the vibration spring (111) is provided at the bottom of the processing box (108). A vibration motor (113) is also provided on the processing box (108).
3. The electric stone mill for grinding green wheat kernels as described in claim 2, characterized in that: The base (101) is also provided with a guide slot (114), and the mounting frame (112) is provided with a guide plate (115) that is inserted into the guide slot (114).
4. The electric stone mill for grinding green wheat kernels as described in claim 3, characterized in that: A support frame (201) is provided on the inner wall of the processing box (108), and a retaining frame (202) is provided on the side end of the filter tank (110) to engage with the support frame (201). A hand-tightening bolt (203) is provided on the retaining frame (202) for connecting with the support frame (201), and a threaded connection hole is provided on the support frame (201) for connecting with the hand-tightening bolt (203).
5. The electric stone mill for grinding green wheat kernels as described in claim 4, characterized in that: The blocking frame (202) is also provided with a handle (204).
6. The electric stone mill for grinding green wheat kernels as described in claim 5, characterized in that: The frame (102) is also provided with a fixing plate (301) on the side. A linear slide (302) is provided on the fixing plate (301). A brake block (303) is provided on the slide of the linear slide (302). Brake pads (304) for abutting and braking against the corresponding guide plates (115) are provided on both sides of the brake block (303).
7. The electric stone mill for grinding green wheat kernels as described in claim 6, characterized in that: The fixed plate (301) is also provided with a U-shaped support frame (305), and the slide of the linear slide (302) is also provided with a guide sleeve (306) that is slidably connected to the support frame (305).
8. The electric stone mill for grinding green wheat kernels as described in claim 7, characterized in that: A rotating shaft (116) is vertically inserted and rotatably mounted on the lower fixed grinding disc (103). The upper rotating grinding disc (104) is connected to the rotating shaft (116). A reduction drive motor (118) is also mounted on the lower fixed grinding disc (103). A gear transmission assembly (119) is provided between the output shaft of the reduction drive motor (118) and the rotating shaft (116).