A high-efficiency grinding machine with adjustable grinding gap

Abstract

The utility model discloses a high -efficient grinding machine of adjustable's grinding gap, including frame, the top of frame is provided with feeding device, and the middle part is provided with grinding device, and the lower part is provided with with drive arrangement and gap adjusting device, and drive arrangement is connected with grinding device transmission, and gap adjusting device is connected with grinding device to adjust its grinding gap, and the below of grinding device is provided with guide device, advantage is: effectively solve the inconvenient gap adjustment of existing grinding machine, poor precision, poor adaptability, the problem of low grinding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of material grinding equipment technology, and in particular to a high-efficiency grinding machine with adjustable grinding gap. Background Technology

[0002] As a core piece of equipment for deep processing of materials, the grinding mill applies shearing, extrusion, and grinding forces to the material through the relative movement of its grinding components, crushing the material to the target fineness. Currently, grinding mills on the market are mainly divided into two types: fixed-gap and manually adjustable-gap. However, many problems exist in practical applications: Firstly, the fixed-gap grinding mill has a fixed spacing between its grinding components, which can only be used to grind materials with a single fineness requirement. If the grinding fineness needs to be changed, the entire grinding component needs to be replaced, which is not only cumbersome and time-consuming, but also increases the cost of equipment purchase and maintenance, making it difficult to meet the processing needs of multiple varieties and specifications of materials. Secondly, although the grinding gap of a manually adjustable grinding mill can be adjusted by bolts, shims and other components, the adjustment process requires stopping the machine and relies on the operator's experience to judge the size of the gap, which cannot achieve precise quantitative adjustment. This can easily lead to uneven grinding fineness of the same batch of materials. At the same time, the manual adjustment structure is prone to gap shift due to vibration after long-term use, requiring frequent re-inspection and adjustment, which increases labor costs. Moreover, the shifted gap may cause the grinding components to collide directly, causing equipment damage. Third, existing grinding machines have poor material conveying and grinding coordination. Most equipment uses a single feed port for direct feeding, which makes it easy for materials to accumulate at the edge of the grinding components, resulting in insufficient grinding. Some materials are discharged without being effectively ground, causing material waste and low grinding efficiency.

[0003] In summary, current grinding machines suffer from problems such as inconvenient gap adjustment, low precision, poor adaptability, and difficulty in balancing grinding efficiency and quality. There is an urgent need for a high-efficiency grinding machine with precise and convenient gap adjustment, which can improve grinding efficiency and quality, adapt to the grinding needs of various industries and materials of various specifications, reduce production costs, and ensure processing stability. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of inconvenient gap adjustment, poor precision, poor adaptability, and low grinding efficiency of existing grinding machines, and to provide a high-efficiency grinding machine with adjustable grinding gap.

[0005] This utility model achieves the above objectives through the following technical solutions: A high-efficiency grinding machine with adjustable grinding gap includes a frame, a feeding device at the top of the frame, a grinding device in the middle, a driving device and a gap adjustment device at the bottom, the driving device being connected to the grinding device for transmission, the gap adjustment device being connected to the grinding device to adjust its grinding gap, and a guiding device being provided below the grinding device.

[0006] Furthermore, a support plate is provided on the upper part of the lower part of the frame and is fixedly connected by support columns, and cover plates are provided on all four sides of the frame.

[0007] Furthermore, the feeding device includes a feeding hopper, a feeding box, auger blades, and a first motor. The feeding hopper is installed on the feeding port of the feeding box. The auger blades are rotatably connected to both ends of the inner cavity of the feeding box. The first motor is installed on the outer side of one end of the feeding box, and its output end is connected to the auger blades. The feeding box has a discharge port on the opposite side of the feeding port, located above the grinding device.

[0008] Furthermore, the grinding device includes a fixed grinding disc and a movable grinding disc. The fixed grinding disc is connected to the frame via several supports. The movable grinding disc is positioned directly below the fixed grinding disc and is connected to the driving device. The fixed grinding disc has an annular retaining ring on its outer circumference on its upper surface, a central hole at its center, a conical upper surface extending downward to the central hole, and radially distributed first grinding teeth on its lower surface. The movable grinding disc has radially distributed second grinding teeth on its upper surface, which mesh with the first grinding teeth, and a connecting block at the center of its lower surface.

[0009] Furthermore, the drive device includes a second motor, a gearbox, a spline coupling, and a spline drive shaft; the second motor is connected to the gearbox and fixed to the lower part of the frame, the output end of the gearbox is connected to the spline coupling, the spline groove end of the spline coupling is connected to the spline end of the spline drive shaft, and the other end of the spline drive shaft is fixedly connected to the connecting block by bolts.

[0010] Furthermore, the gap adjustment device includes a third motor, a ball screw, a screw nut, a guide rod, and a support base. The third motor is fixed to the lower part of the frame. The ball screw is vertically arranged, with one end connected to the output end of the third motor via a coupling, and the other end rotatably connected to the support plate. The screw nut is sleeved on the ball screw and is fixedly connected to the support base. The guide rod is symmetrically arranged on both sides of the ball screw, with its two ends fixed to the support plate and the lower part of the frame, respectively. The support base is slidably connected to the guide rod via a linear bearing. The support base is rotatably connected to the spline drive shaft via a bearing, and the bearing is fixedly connected to the support base. A displacement sensor is provided on the support plate.

[0011] Furthermore, the material guiding device is fixedly connected to the lower part of the frame by bolts. The material guiding device has a concave ring structure, with the inner ring hollow to avoid the drive device and the grinding device. The material guiding device is provided with an annular inclined plate, and a discharge port is provided at the lowest point of the annular inclined plate. A vibration motor is provided on the inner ring surface of the material guiding device, and an annular top plate is slidably connected to the upper part of the inner ring wall. Several elastic elements are provided between the upper surface of the inner ring wall and the annular top plate to provide elastic force so that the annular top plate always abuts against the lower surface of the movable grinding disc. The outer ring wall of the material guiding device is higher than the grinding layer of the grinding device.

[0012] Furthermore, the grinding machine is externally connected to a control system, and the first motor, the second motor, the third motor, the displacement sensor, and the vibration motor are all electrically connected to the control system.

[0013] Beneficial effects: This utility model has the following beneficial effects: The ball screw is driven by a third motor, and the displacement sensor provides real-time feedback on the movement of the support seat, which drives the movable grinding disc to move vertically, realizing quantitative adjustment of the grinding gap. The spline drive and spline coupling ensure stable power transmission when the movable grinding disc moves, avoiding the problems of traditional manual adjustment that rely on experience and have low precision. It can adapt to the grinding needs of materials with different fineness, without the need to replace grinding components, reducing equipment costs and operational complexity. The conical surface design of the fixed grinding disc matches the central hole, guiding the material to slide down the conical surface into the grinding area and avoiding accumulation. The radially meshing first and second grinding teeth increase the material contact area and enhance the shearing and grinding effect. The annular baffle ring prevents the material from spilling from the edge of the grinding area, reducing waste. The gearbox of the drive device can adjust the speed of the movable grinding disc according to the hardness of the material, ensuring that hard materials are ground thoroughly and soft materials are ground efficiently, and ensuring that the fineness of the same batch of materials is uniform. The auger blades of the feeding device convey the material at a uniform speed, avoiding the accumulation problem of traditional direct-fall feeding and ensuring that the material enters the grinding area stably. The annular inclined plate of the guiding device guides the ground material to converge at the discharge port. The vibrating motor accelerates the material to slide down and prevents residue. The annular top plate always abuts against the movable grinding plate under the action of the elastic element, preventing the material from leaking out from the gap between the two, while not affecting the lifting of the movable grinding disc, thus solving the problems of leakage and residue in traditional guiding structures. The guide rod provides stable guidance for the movement of the support base, preventing the moving grinding disc from shifting during gap adjustment. The cover plate protects the internal components from dust contamination. The control system integrates various motors and sensors, allowing operators to achieve automated operation by setting parameters, eliminating the need for frequent manual intervention, reducing labor costs, and providing timely feedback in case of abnormalities, thus improving the stability and service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the frame structure of this utility model; Figure 3 This is a schematic diagram of the feeding device structure of this utility model; Figure 4 This is a schematic diagram of the grinding device of this utility model; Figure 5 This is a schematic diagram of the grinding device of this utility model from another perspective; Figure 6 This is a schematic diagram of the drive device structure of this utility model; Figure 7 This is a schematic diagram of the gap adjustment device of this utility model; Figure 8 This is a schematic diagram of the material guiding device of this utility model.

[0015] In the diagram: 1-frame, 2-feeding device, 3-grinding device, 4-drive device, 5-gap adjustment device, 6-material guiding device; 101-Support plate, 102-Support column, 103-Cover plate, 201-Feed hopper, 202-Feed box, 203-Auger blade, 204-First motor, 301-Fixed grinding disc, 302-Modible grinding disc, 303-Between, 304-Annular retaining ring, 305-Center hole, 306-First grinding tooth, 307-Second grinding tooth, 308-Connecting block, 401-Second motor, 402-Reduction gearbox, 403-Spline coupling, 404-Spline drive shaft, 501-Third motor, 502-Ball screw, 503-Screw nut, 504-Guide rod, 505-Support seat, 506-Displacement sensor, 601-Annular inclined plate, 602-Discharge port, 603-Vibration motor, 604-Annular top plate, 605-Elastic element. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Combination Figures 1 to 8 The high-efficiency grinding machine with adjustable grinding gap shown includes a frame 1, a feeding device 2 at the top of the frame 1, a grinding device 3 in the middle, a drive device 4 and a gap adjustment device 5 at the bottom. The drive device 4 is connected to the grinding device 3 for transmission, and the gap adjustment device 5 is connected to the grinding device 3 to adjust its grinding gap. A guide device 6 is provided below the grinding device 3.

[0018] A support plate 101 is provided on the upper part of the lower part of the frame 1 and is fixedly connected to the support column 102 to form a stable middle support structure, providing installation points for the ball bearing rod 502 and guide rod 504 of the gap adjustment device 5. Cover plates 103 are provided on all four sides of the frame 1, which can effectively cover the internal components of the equipment, prevent dust and debris generated during the grinding process from overflowing and polluting the environment, and also prevent external debris from entering the equipment and affecting the operational stability of the transmission and grinding components, thus extending the service life of the equipment.

[0019] The feeding device 2 includes a feeding hopper 201, a feeding box 202, an auger blade 203, and a first motor 204. The feeding hopper 201 is installed on the inlet of the feeding box 202. The auger blade 203 is rotatably connected to both ends of the inner cavity of the feeding box 202. The first motor 204 is installed on the outer side of one end of the feeding box 202, and its output end is connected to the auger blade 203. The other end of the feeding box 202 opposite to the inlet has an outlet, which is located above the grinding device 3. The spiral structure of the auger blade 203 smoothly conveys the material from the inlet to the outlet, accurately controls the feeding rate, and solves the problem of material accumulation caused by uneven feeding rate in traditional direct-fall feeding.

[0020] The grinding device 3 includes a fixed grinding disc 301 and a movable grinding disc 302. The fixed grinding disc 301 is connected to the frame 1 through several supports 303. The movable grinding disc 302 is located directly below the fixed grinding disc 301 and is connected to the drive device 4. The upper surface of the fixed grinding disc 301 is provided with an annular baffle ring 304 to prevent material from falling from the outer ring of the fixed grinding disc 301 and reduce waste. A central hole 305 is provided in the center. The upper surface is conical and extends downward to the central hole 305. This structural design can guide the material to slide down the inclined surface to the central hole 305 and then enter the grinding gap, preventing the material from accumulating on the disc surface and causing insufficient grinding. The lower surface is provided with radially distributed first grinding teeth 306. The upper surface of the movable grinding disc 302 is provided with radially distributed second grinding teeth 307, which mesh with the first grinding teeth 306. The radially meshing grinding teeth increase the contact area between the material and the tooth surface, enhance the shearing and extrusion grinding force, and ensure that the material is crushed evenly. A connecting block 308 is provided at the center of the lower surface to provide a stable connection point between the movable grinding disc 302 and the splined drive shaft 404 of the drive device 4, ensuring stable power transmission.

[0021] The drive unit 4 includes a second motor 401, a reduction gearbox 402, a spline coupling 403, and a spline drive shaft 404. The second motor 401 is connected to the reduction gearbox 402 and fixed to the lower part of the frame 1. The output end of the reduction gearbox 402 is connected to the spline coupling 403. The spline groove end of the spline coupling 403 is connected to the spline end of the spline drive shaft 404. The other end of the spline drive shaft 404 is fixedly connected to the connecting block 308 by bolts. The second motor 401 provides driving force. With the help of the reduction gearbox 402, the conveying speed can be adjusted according to the hardness of the material. The cooperation between the spline coupling 403 and the spline drive shaft 404 not only achieves stable power transmission, but also allows the spline drive shaft 404 to move vertically with the movable grinding disc 302, ensuring that the power is not interrupted during the gap adjustment process. This avoids the defect that traditional rigid couplings cannot adapt to axial movement and ensures the synchronous feasibility of grinding and adjustment.

[0022] The gap adjustment device 5 includes a third motor 501, a ball screw 502, a screw nut 503, a guide rod 504, and a support base 505. The third motor 501 is fixed to the lower part of the frame 1. The ball screw 502 is vertically arranged, with one end connected to the output end of the third motor 501 via a coupling, and the other end rotatably connected to the support plate 101. The screw nut 503 is sleeved on the ball screw 502 and is fixedly connected to the support base 505. The guide rod 504 is symmetrically arranged on both sides of the ball screw 502, with both ends fixed to the support plate 101 and the lower part of the frame 1, respectively. The support base 505 is slidably connected to the guide rod 504 via a linear bearing. The support base 505 is rotatably connected to the splined drive shaft 404 via a bearing, and the bearing is fixedly connected to the support base 505. A fixed connection is established to ensure that the spline drive shaft 404 does not drive the support base 505 to rotate synchronously when it rotates, while it can move up and down with the support base 505 to adjust the movable grinding disc 302. A displacement sensor 506 is installed on the support plate 101. The third motor 501 drives the ball screw 502 to rotate, and the rotational motion is converted into the vertical linear motion of the support base 505 through the screw nut 503. This causes the spline drive shaft 404 and the movable grinding disc 302 to rise and fall synchronously, thereby adjusting the grinding gap. The displacement sensor 506 detects the displacement of the support base 505 in real time and feeds the data back to the control system to achieve quantitative and precise adjustment of the gap.

[0023] The material guiding device 6 is fixedly connected to the lower part of the frame 1 by bolts. The material guiding device 6 has a concave ring structure, with the inner ring hollow to avoid the drive device 4 and the grinding device 3. The material guiding device 6 is provided with an annular inclined plate 601, and the discharge port 602 is provided at the lowest point of the annular inclined plate 601. The inner ring surface of the material guiding device 6 is provided with a vibration motor 603. The vibration generated accelerates the material to slide down the inclined plate and prevents the material from sticking and remaining. An annular top plate 604 is slidably connected to the upper part of the inner ring wall. Several elastic elements 605 are provided between the upper surface of the inner ring wall and the annular top plate 604 to provide elastic force so that the annular top plate 604 always abuts against the lower surface of the movable grinding disc 302, preventing the material from leaking out from the gap between the movable grinding disc 302 and the material guiding device 6. At the same time, the elastic elements 605 can adaptively extend and retract with the lifting and lowering of the movable grinding disc 302 without affecting the gap adjustment. The outer ring wall of the material guiding device 6 is higher than the grinding layer of the grinding device 3 to prevent the material from splashing outside the material guiding device 6 during the grinding process, further improving the material collection rate.

[0024] The grinding mill is externally connected to a control system. The first motor 204, the second motor 401, the third motor 501, the displacement sensor 506, and the vibration motor 603 are all electrically connected to the control system. The control system receives feedback data from the displacement sensor 506 and precisely controls the start, stop, and rotation angle of the third motor 501 to achieve automatic adjustment of the grinding gap. At the same time, it can control the speed of the first motor 204 to adjust the feeding rate, the speed of the second motor 401 to adapt to the material hardness, and the vibration intensity of the vibration motor 603 to optimize the discharge effect.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency grinding machine with adjustable grinding gap, characterized in that: The machine includes a frame (1), a feeding device (2) is provided at the top of the frame (1), a grinding device (3) is provided in the middle, and a driving device (4) and a gap adjustment device (5) are provided at the bottom. The driving device (4) is connected to the grinding device (3) for transmission, and the gap adjustment device (5) is connected to the grinding device (3) to adjust its grinding gap. A material guiding device (6) is provided below the grinding device (3).

2. The high-efficiency grinding machine with adjustable grinding gap according to claim 1, characterized in that: A support plate (101) is provided on the upper part of the lower part of the frame (1) and is fixedly connected to it by a support column (102). Cover plates (103) are provided on all four sides of the frame (1).

3. The high-efficiency grinding machine with adjustable grinding gap according to claim 2, characterized in that: The feeding device (2) includes a feeding hopper (201), a feeding box (202), an auger blade (203), and a first motor (204). The feeding hopper (201) is installed on the feeding port of the feeding box (202). The auger blade (203) is rotatably connected to both ends of the inner cavity of the feeding box (202). The first motor (204) is installed on the outer side of one end of the feeding box (202), and its output end is connected to the auger blade (203). The feeding box (202) has a discharge port on the other side opposite to the feeding port, and is located above the grinding device (3).

4. The high-efficiency grinding machine with adjustable grinding gap according to claim 3, characterized in that: The grinding device (3) includes a fixed grinding disc (301) and a movable grinding disc (302). The fixed grinding disc (301) is connected to the frame (1) through several supports (303). The movable grinding disc (302) is located directly below the fixed grinding disc (301) and is connected to the driving device (4) in a transmission manner. The fixed grinding disc (301) has an annular baffle ring (304) on the outer ring of its upper surface and a central hole (305) at its center. The upper surface is conical and extends downward to the central hole (305). The lower surface has radially distributed first grinding teeth (306). The movable grinding disc (302) has radially distributed second grinding teeth (307) on its upper surface, which mesh with the first grinding teeth (306). The lower surface has a connecting block (308) at its center.

5. A high-efficiency grinding machine with adjustable grinding gap according to claim 4, characterized in that: The drive device (4) includes a second motor (401), a gearbox (402), a spline coupling (403), and a spline drive shaft (404); the second motor (401) is connected to the gearbox (402) and fixed to the lower part of the frame (1); the output end of the gearbox (402) is connected to the spline coupling (403); the spline groove end of the spline coupling (403) is connected to the spline end of the spline drive shaft (404); and the other end of the spline drive shaft (404) is fixedly connected to the connecting block (308) by bolts.

6. A high-efficiency grinding machine with adjustable grinding gap according to claim 5, characterized in that: The gap adjustment device (5) includes a third motor (501), a ball screw (502), a screw nut (503), a guide rod (504), and a support base (505); the third motor (501) is fixed to the lower part of the frame (1), the ball screw (502) is vertically arranged, one end of which is connected to the output end of the third motor (501) through a coupling, and the other end is rotatably connected to the support plate (101), the screw nut (503) is sleeved on the ball screw (502), and the screw nut (503) The guide rod (504) is symmetrically arranged on both sides of the ball screw (502), and its two ends are respectively fixed to the support plate (101) and the lower part of the frame (1). The support plate (505) and the guide rod (504) are slidably connected through a linear bearing. The support plate (505) and the spline drive shaft (404) are rotatably connected through a bearing, and the bearing is fixedly connected to the support plate (505). A displacement sensor (506) is provided on the support plate (101).

7. A high-efficiency grinding machine with adjustable grinding gap according to claim 6, characterized in that: The material guiding device (6) is fixedly connected to the lower part of the frame (1) by bolts. The material guiding device (6) has a concave ring structure. The inner ring is hollow to avoid the drive device (4) and the grinding device (3). The material guiding device (6) is provided with an annular inclined plate (601), and a discharge port (602) is provided at the lowest point of the annular inclined plate (601). The inner ring surface of the material guiding device (6) is provided with a vibration motor (603). An annular top plate (604) is slidably connected to the upper part of the inner ring wall. Several elastic elements (605) are provided between the upper surface of the inner ring wall and the annular top plate (604) to provide elastic force so that the annular top plate (604) always abuts against the lower surface of the movable grinding disc (302). The outer ring wall of the material guiding device (6) is higher than the grinding layer of the grinding device (3).

8. A high-efficiency grinding machine with adjustable grinding gap according to claim 7, characterized in that: The grinding machine is connected to an external control system. The first motor (204), the second motor (401), the third motor (501), the displacement sensor (506), and the vibration motor (603) are all electrically connected to the control system.

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