Grinding machine for laboratory
By using the extrusion grinding and screen shaking technology of the main grinding roller and secondary grinding roller in the laboratory grinder, the problem of not being completely ground in the coated sand is solved, effective separation of sand particles and slowing down equipment vibration is achieved, and the improvement of improvement of the The reliability of experimental operation and equipment life are achieved.
Patent Information
- Application Number
- CN202420241932.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-31
AI Technical Summary
When existing grinders grind the coated sand, it is difficult to separate the unfinished sand particles from the fully grounded sand particles, which affects subsequent experimental operations and simulations.
A laboratory grinder was designed, using the mutual extrusion of the main grinding roller and the secondary grinding roller for fine grinding, and shaking by driving the screen. The screen was used to intercept large-grained sand particles that were not completely ground, and at the same time, vibration reduction was used. The components buffer vibration and extend the life of the equipment.
Effectively separate unfinished sand particles from fully grounded sand particles, improve the fineness consistency of sand particles, avoid the impact of vibration on the experiment, and extend the service life of the equipment.
Smart Images
Figure CN222174193U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of grinders, and in particular to a grinder for laboratory use. Background Art
[0002] A grinder is a machine that uses a grinding tool coated with or embedded with abrasives to grind the surface of a workpiece. The main types of grinders include disc grinders, rotary shaft grinders and various special grinders.
[0003] Whether it is the coated sand production process or the lost foam casting process, there are strict requirements on the fineness of the sand. In the past, the sand needed to reach a certain required fineness, and generally a sand making machine or a sand grinder was needed to grind the coarse sand.
[0004] However, when using a grinder to grind the coated sand, a small amount of the coated sand will not be completely ground, resulting in the coated sand that is not completely ground being mixed with the coated sand that is successfully ground. The two cannot be separated and screened well, affecting subsequent experimental operations and simulations. For this reason, the present application provides a laboratory grinder. Utility Model Content
[0005] The purpose of the present application is to provide a laboratory grinder to solve the problem that coated sand that has not been completely ground is mixed with coated sand that has been successfully ground and cannot be screened.
[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:
[0007] A laboratory grinder comprises a support frame, a grinding box is fixedly connected to the top of the support frame, a feed inlet is provided at the top of the grinding box, a guide plate is fixedly connected to the bottom of the feed inlet, a main grinding roller is rotatably connected inside the grinding box, auxiliary grinding rollers are rotatably connected to both sides of the main grinding roller located on the grinding box, a screen is installed inside the grinding box, a screening assembly is installed at the bottom of the screen, a discharge port is provided at the bottom of the grinding box, a box door is installed on one side of the grinding box, and a vibration reduction assembly is installed at the bottom of the support frame.
[0008] By adopting the above technical solution, the coated sand is poured into the grinding box from the feed port, and the coated sand is finely ground through the mutual squeezing between the main grinding roller and the auxiliary grinding roller. At this time, the screening component is started to drive the screen to continuously shake to screen the coated sand on the top, and the large particles of coated sand that are not completely ground are intercepted by the screen, while the completely ground coated sand will be discharged and collected through the discharge port for subsequent experimental simulation. In addition, the vibration reduction component can be used to buffer and reduce vibration of the grinder, which greatly improves the service life of the equipment and also avoids affecting other people's experiments due to large vibration.
[0009] Furthermore, one end of the main grinding roller is fixedly connected to gear 1, and gear 1 is located on one side of the outer wall of the grinding box. One side of the grinding box is fixedly connected to motor 1, and the output end of motor 1 is fixedly connected to one end of the main grinding roller. One end of the two auxiliary grinding rollers is fixedly connected to gear 2, and gear 1 and gear 2 are meshingly connected.
[0010] By adopting the above technical solution, since gear one and gear two are meshed with each other, when gear one rotates, gear two on both sides will also be driven to rotate, thereby causing the main grinding roller and the auxiliary grinding roller to rotate relative to each other.
[0011] Furthermore, two material guide plates are symmetrically fixedly connected inside the grinding box, and the two material guide plates are inclined.
[0012] By adopting the above technical solution, the ground coated sand is guided by the inclined guide plates and can fall directly onto the screen to avoid being scattered randomly inside the grinding box.
[0013] Furthermore, the screening assembly includes a slide groove symmetrically opened inside the grinding box, a connecting plate is slidably arranged inside the slide groove, the screen is slidably connected inside the connecting plate, a rotating rod is rotatably connected inside the grinding box, a cam is symmetrically fixedly connected to the rotating rod, the cam is located at the bottom of the connecting plate, a motor 2 is fixedly connected to one side of the grinding box, and the output end of the motor 2 is fixedly connected to one end of the rotating rod.
[0014] By adopting the above technical solution, the intermittent collision between the cam and the bottom of the connecting plate drives the screen inside the connecting plate to move up and down, so as to screen the coated sand ground by the grinder.
[0015] Furthermore, a slider is symmetrically fixedly connected to one side of the connecting plate, the slider is slidably connected inside the slide groove, and springs are fixedly connected to both upper and lower ends of the slider.
[0016] By adopting the above technical solution, when the slider moves up and down, the springs 1 at the upper and lower ends will be squeezed to contract. Through the contraction and rebound of the two springs, the screen can be driven to shake again, which greatly improves the screening effect of the screen and prevents the coated sand from clogging the filter holes during screening.
[0017] Furthermore, two buckles are symmetrically rotatably connected to one side of the box door, and two clamping blocks are symmetrically fixedly connected to one side of the grinding box. The buckles are clamped with the clamping blocks, and an observation window is provided on the box door.
[0018] By adopting the above technical solution, the grinding condition of the internal coated sand can be directly observed through the observation window. When the grinding and screening are completed, the buckle can be removed from the block to release the connection between the buckle and the block. Then, the box door can be opened to take out the internal screen and take out the large-particle coated sand for secondary grinding.
[0019] Furthermore, the vibration reduction assembly includes a fixed plate fixedly connected to the bottom of the support frame, a connecting column fixedly connected to the bottom of the fixed plate, a fixed column slidably connected to the outer wall of the connecting column, a spring 2 fixedly connected to the bottom of the fixed plate, the bottom of the spring 2 is fixedly connected to the top of the fixed column, and the connecting column is located inside the spring 2.
[0020] By adopting the above technical solution, the support frame will squeeze the fixed plate after being vibrated. At this time, the bottom of the fixed plate will squeeze the spring 2 to shrink. Through the shrinkage and rebound of the spring 2, the vibration generated by the grinder can be initially buffered.
[0021] Furthermore, a sliding plate is fixedly connected to the bottom of the connecting column, the sliding plate is slidably connected inside the fixed column, a damper is symmetrically fixedly connected inside the fixed column, and the top of the damper is fixedly connected to the bottom of the sliding plate.
[0022] By adopting the above technical solution, when the connecting column descends, the sliding plate will be driven to descend, thereby squeezing the two dampers at the bottom. The two dampers can greatly reduce the vibration generated during the grinding process of the grinder, thereby improving the service life of the equipment and avoiding affecting other people's experiments due to large vibrations.
[0023] In summary, the present application includes at least one of the following beneficial effects:
[0024] 1. This application is provided with a screening assembly. After the grinding, the coated sand is guided by the guide plate and falls on the surface of the screen. The cam is driven to rotate by starting motor 2. The intermittent collision between the cam and the bottom of the connecting plate drives the screen inside the connecting plate to move up and down. The coated sand on the top is screened by shaking the screen, and the large particles of coated sand that are not completely ground are intercepted through the screen to prevent the large particles of coated sand from being mixed with the fine coated sand, which affects the subsequent experiments and simulations.
[0025] 2. The present application is provided with a vibration reduction assembly. When the grinder is grinding the coated sand, the equipment will vibrate. At this time, the support frame will squeeze the fixed plate after being vibrated, driving the connecting column to slide inside the fixed column, thereby squeezing the spring 2 and the two dampers. Through the cooperation of the spring 2 and the damper, the vibration generated during the grinding process of the grinder can be greatly reduced, thereby improving the service life of the equipment and avoiding affecting other people's experiments due to large vibrations. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.
[0027] Figure 2 It is a schematic diagram of the internal structure of the device body in this application.
[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the screening component in this application.
[0029] Figure 4 It is a three-dimensional structural schematic diagram of the vibration reduction assembly in this application.
[0030] Description of reference numerals:
[0031] 1. Support frame; 2. Grinding box; 3. Feeding port; 4. Guide plate; 5. Main grinding roller; 6. Auxiliary grinding roller; 7. Gear 1; 8. Motor 1; 9. Gear 2; 10. Guide plate; 11. Screen; 12. Screening assembly; 13. Discharging port; 14. Box door; 15. Buckle; 16. Block; 17. Observation window; 18. Vibration reduction assembly; 121. Slide; 122. Connecting plate; 123. Rotating rod; 124. Cam; 125. Motor 2; 126. Sliding block; 127. Spring 1; 181. Fixed plate; 182. Connecting column; 183. Fixed column; 184. Spring 2; 185. Sliding plate; 186. Damper. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-4 This application is described in further detail.
[0033] The embodiment of the present application discloses a laboratory grinder.
[0034] Reference Figure 1 and Figure 2 A laboratory grinder comprises a support frame 1, a grinding box 2 is fixedly connected to the top of the support frame 1, a feeding port 3 is provided at the top of the grinding box 2, a guide plate 4 is fixedly connected to the bottom of the feeding port 3, a main grinding roller 5 is rotatably connected to the inside of the grinding box 2, and auxiliary grinding rollers 6 are rotatably connected to the main grinding roller 5 on both sides of the grinding box 2, a screen 11 is installed inside the grinding box 2, a screening component 12 is installed at the bottom of the screen 11, a discharge port 13 is provided at the bottom of the grinding box 2, a box door 14 is installed on one side of the grinding box 2, a vibration reduction component 18 is installed at the bottom of the support frame 1, one end of the main grinding roller 5 is fixedly connected to a gear 7, the gear 7 is located on one side of the outer wall of the grinding box 2, a motor 8 is fixedly connected to one side of the grinding box 2, the output end of the motor 8 is fixedly connected to one end of the main grinding roller 5, one end of the two auxiliary grinding rollers 6 are fixedly connected to a gear 2 9, the gear 7 and the gear 2 9 are meshed and connected, and two guide plates 10 are symmetrically fixedly connected to the inside of the grinding box 2, and the two guide plates 10 are inclined.
[0035] When in use, first start the cabinet motor 8 to drive the main grinding roller 5 to rotate. When the main grinding roller 5 rotates, it will drive the gear 7 on one end to rotate together. Because the gear 7 and the gear 2 9 are meshed with each other, when the gear 7 rotates, it will drive the gears 2 9 on both sides to rotate, so that the main grinding roller 5 and the auxiliary grinding roller 6 rotate with each other. At this time, the coated sand is poured into the grinding box 2 from the feed inlet 3, and falls on the main grinding roller 5 and the auxiliary grinding roller 6 through the guidance of the guide plate 4. The coated sand is finely ground by the mutual extrusion between the main grinding roller 5 and the auxiliary grinding roller 6. After the grinding, the coated sand passes through The material guide plate 10 guides the material and the material falls on the surface of the screen 11. At this time, the screening component 12 is started to drive the screen 11 to continue to shake. The coated sand on the top is screened by shaking the screen 11, and the large particles of coated sand that are not completely ground are intercepted by the screen 11, while the completely ground coated sand is discharged and collected through the discharge port 13 for subsequent experimental simulation. In addition, the grinder will vibrate during the grinding process. The vibration reduction component 18 at the bottom of the support frame 1 can buffer and reduce vibration of the grinder, which greatly improves the service life of the equipment and also avoids affecting other people's experiments due to large vibration.
[0036] Reference Figure 1 and Figure 3 The screening component 12 includes a slide groove 121 symmetrically opened inside the grinding box 2, a connecting plate 122 is slidably arranged inside the slide groove 121, the screen 11 is slidably connected inside the connecting plate 122, a rotating rod 123 is rotatably connected inside the grinding box 2, a cam 124 is symmetrically fixedly connected to the rotating rod 123, the cam 124 is located at the bottom of the connecting plate 122, a motor 2 125 is fixedly connected to one side of the grinding box 2, the output end of the motor 2 125 is fixedly connected to one end of the rotating rod 123, a slider 126 is symmetrically fixedly connected to one side of the connecting plate 122, the slider 126 is slidably connected inside the slide groove 121, and a spring 127 is fixedly connected to both the upper and lower ends of the slider 126.
[0037] When in use, first start the motor 2 125 to drive the rotating rod 123 to rotate. The continuous rotation of the rotating rod 123 will drive the cam 124 to rotate together. The intermittent collision between the cam 124 and the bottom of the connecting plate 122 makes the connecting plate 122 and the slider 126 slide up and down inside the slide groove 121, thereby driving the screen 11 inside the connecting plate 122 to move up and down together, so as to screen the coated sand after grinding by the grinder, and intercept the coated sand with large particles that are not completely ground on the screen 11. At the same time, when the slider 126 moves up and down, the springs 127 at the upper and lower ends will be squeezed to contract. Through the contraction and rebound of the two springs 127, the screen 11 can be driven to shake again, which greatly improves the screening effect of the screen 11 and prevents the coated sand from clogging the filter holes during screening.
[0038] Reference Figure 1 and Figure 2 One side of the box door 14 is symmetrically rotatably connected with two buckles 15, one side of the grinding box 2 is symmetrically fixedly connected with two clamping blocks 16, the buckles 15 are clamped with the clamping blocks 16, and an observation window 17 is opened on the box door 14.
[0039] During use, the grinding condition of the internal coated sand can be directly observed through the observation window 17 during the grinding process. When the grinding and screening are completed, the buckle 15 can be rotated to remove the buckle 15 from the block 16, and the connection between the buckle 15 and the block 16 can be released. Then the box door 14 can be opened, and the internal screen 11 can be taken out to take out the large-particle coated sand for secondary grinding.
[0040] Reference Figure 1 and Figure 4 The vibration reduction assembly 18 includes a fixed plate 181 fixedly connected to the bottom of the support frame 1, a connecting column 182 is fixedly connected to the bottom of the fixed plate 181, a fixed column 183 is slidably connected to the outer wall of the connecting column 182, a spring 184 is fixedly connected to the bottom of the fixed plate 181, the bottom of the spring 184 is fixedly connected to the top of the fixed column 183, the connecting column 182 is located inside the spring 184, a sliding plate 185 is fixedly connected to the bottom of the connecting column 182, the sliding plate 185 is slidably connected inside the fixed column 183, a damper 186 is symmetrically fixedly connected inside the fixed column 183, and the top of the damper 186 is fixedly connected to the bottom of the sliding plate 185.
[0041] When in use, the grinder will vibrate when grinding the coated sand. At this time, the support frame 1 will squeeze the fixed plate 181 after being vibrated. When the fixed plate 181 is under pressure, it will drive the connecting column 182 to slide into the fixed column 183. At this time, the bottom of the fixed plate 181 will squeeze the spring 2 184 to shrink. The shrinkage and rebound of the spring 2 184 can initially buffer the vibration generated by the grinder. In addition, in the process of the connecting column 182 descending, the sliding plate 185 will be driven to descend inside the fixed column 183 to squeeze the two dampers 186 at the bottom. The cooperation of the spring 2 184 and the damper 186 can greatly reduce the vibration generated during the grinding process of the grinder, thereby improving the service life of the equipment and avoiding affecting other people's experiments due to large vibration.
[0042] The implementation principle of a laboratory grinder in this embodiment is as follows: when in use, first start the cabinet motor 18 to drive the main grinding roller 5 to rotate. When the main grinding roller 5 rotates, it will drive the gear 17 on one end to rotate together. Because the gear 17 and the gear 2 9 are meshed with each other, when the gear 17 rotates, it will drive the gear 2 9 on both sides to rotate as well, so that the main grinding roller 5 and the auxiliary grinding roller 6 rotate with each other. At this time, the coated sand is poured into the grinding box 2 from the feed inlet 3, and falls on the main grinding roller 5 and the auxiliary grinding roller 6 through the guidance of the guide plate 4. The coated sand is finely ground through the mutual extrusion between the main grinding roller 5 and the auxiliary grinding roller 6. After the grinding, the coated sand is guided by the guide plate 10 and falls on the surface of the screen 11. At this time, the motor 2 125 is started to drive the rotating rod 123 to rotate. The continuous rotation of 3 will drive the cam 124 to rotate together, and the intermittent collision between the cam 124 and the bottom of the connecting plate 122 will make the connecting plate 122 and the slider 126 slide up and down inside the slide groove 121, thereby driving the screen 11 inside the connecting plate 122 to move up and down together, so as to screen the coated sand after grinding by the grinder, and intercept the coated sand with large particles that are not completely ground on the screen 11. At the same time, when the slider 126 moves up and down, it will squeeze the springs 127 at the upper and lower ends to shrink. Through the shrinkage and rebound of the two springs 127, the screen 11 can be driven to shake again, which greatly improves the screening effect of the screen 11. While screening, it also prevents the coated sand from clogging the filter holes, and the completely ground coated sand will be discharged and collected through the discharge port 13 for subsequent experimental simulation;
[0043] In addition, when the grinder is grinding the coated sand, the equipment will vibrate. At this time, the support frame 1 will squeeze the fixed plate 181 after being vibrated. When the fixed plate 181 is under pressure, it will drive the connecting column 182 to slide into the fixed column 183. At this time, the bottom of the fixed plate 181 will squeeze the second spring 184 to shrink. Through the shrinkage and rebound of the second spring 184, the vibration generated by the grinder can be initially buffered. In addition, during the descent of the connecting column 182, the sliding plate 185 will be driven to descend inside the fixed column 183 to squeeze the two dampers 186 at the bottom. Through the cooperation of the second spring 184 and the damper 186, the shaking generated during the grinding process of the grinder can be greatly slowed down, thereby improving the service life of the equipment and avoiding the influence of large vibration on other people's experiments.
[0044] Secondly, during the grinding process, the grinding condition of the internal coated sand can be directly observed through the observation window 17. When the grinding and screening are completed, the buckle 15 can be rotated to remove the buckle 15 from the block 16, and the connection between the buckle 15 and the block 16 can be released. Then the box door 14 can be opened, and the internal screen 11 can be taken out to take out the large-particle coated sand for secondary grinding.
Claims
1. A laboratory grinding machine, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a grinding box (2), the top of the grinding box (2) is provided with a material inlet (3), the bottom of the material inlet (3) is fixedly connected to a guide plate (4), the inside of the grinding box (2) is rotatably connected to a main grinding roller (5), both sides of the main grinding roller (5) located on the grinding box (2) are rotatably connected to auxiliary grinding rollers (6), a screen (11) is installed inside the grinding box (2), a screening assembly (12) is installed at the bottom of the screen (11), a material outlet (13) is opened at the bottom of the grinding box (2), a box door (14) is installed on one side of the grinding box (2), and a vibration reduction assembly (18) is installed at the bottom of the support frame (1).
2. A laboratory grinding machine according to claim 1, characterized in that: One end of the main grinding roller (5) is fixedly connected to a gear 1 (7), and the gear 1 (7) is located on one side of the outer wall of the grinding box (2). One side of the grinding box (2) is fixedly connected to a motor 1 (8), and the output end of the motor 1 (8) is fixedly connected to one end of the main grinding roller (5). One end of the two auxiliary grinding rollers (6) is fixedly connected to a gear 2 (9), and the gear 1 (7) and the gear 2 (9) are meshingly connected.
3. A laboratory grinder according to claim 1, characterized in that: Two material guide plates (10) are symmetrically and fixedly connected inside the grinding box (2), and the two material guide plates (10) are inclined.
4. A laboratory grinding machine according to claim 1, characterized in that: The screening component (12) comprises a slide groove (121) symmetrically arranged inside the grinding box (2), a connecting plate (122) being slidably arranged inside the slide groove (121), the screen (11) being slidably connected inside the connecting plate (122), a rotating rod (123) being rotatably connected inside the grinding box (2), a cam (124) being symmetrically fixedly connected to the rotating rod (123), the cam (124) being located at the bottom of the connecting plate (122), a second motor (125) being fixedly connected to one side of the grinding box (2), and an output end of the second motor (125) being fixedly connected to one end of the rotating rod (123).
5. A laboratory grinder according to claim 4, characterized in that: A slider (126) is symmetrically fixedly connected to one side of the connecting plate (122), the slider (126) is slidably connected inside the slide groove (121), and a spring 1 (127) is fixedly connected to both upper and lower ends of the slider (126).
6. A laboratory grinder according to claim 1, characterized in that: One side of the box door (14) is symmetrically rotatably connected to two buckles (15), one side of the grinding box (2) is symmetrically fixedly connected to two clamping blocks (16), the buckles (15) are clamped to the clamping blocks (16), and an observation window (17) is provided on the box door (14).
7. A laboratory grinding machine according to claim 1, characterized in that: The vibration reduction assembly (18) comprises a fixing plate (181) fixedly connected to the bottom of the support frame (1); a connecting column (182) is fixedly connected to the bottom of the fixing plate (181); a fixing column (183) is slidably connected to the outer wall of the connecting column (182); a second spring (184) is fixedly connected to the bottom of the fixing plate (181); the bottom of the second spring (184) is fixedly connected to the top of the fixing column (183); and the connecting column (182) is located inside the second spring (184).
8. A laboratory grinder according to claim 7, characterized in that: A sliding plate (185) is fixedly connected to the bottom of the connecting column (182), the sliding plate (185) is slidably connected inside the fixed column (183), a damper (186) is symmetrically fixedly connected inside the fixed column (183), and the top of the damper (186) is fixedly connected to the bottom of the sliding plate (185).