Freezing grinding device
By introducing hydraulic cylinders and liquid nitrogen introduction tubes into the refrigerated grinding device, adjusting the pitch of the grinding rollers and low-temperature grinding is achieved, which solves the problem of fixing the pitch of the grinding rollers in the existing device, and improves the grinding effect and sample fineness.
Patent Information
- Application Number
- CN202420641122.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-30
AI Technical Summary
In the existing freezing grinding device, the spacing of the grinding rollers is fixed, making it difficult to adjust according to the grinding needs, resulting in poor grinding effect.
A freezing grinding device is designed to drive the support horizontal movement through the hydraulic cylinder to realize the adjustment of the pitch of the grinding rollers. The device also uses a liquid nitrogen introduction tube to introduce liquid nitrogen into the housing, keeping the sample and grinding device in a low temperature state.
By adjusting the pitch of the grinding rollers, it can be optimized according to the grinding needs of different samples to improve the grinding effect; at the same time, grinding at low temperatures can better crush the sample and obtain experimental samples with small particle sizes.
Smart Images
Figure CN222624643U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding devices, in particular to a freezing grinding device. Background Art
[0002] In the experiment, the sample needs to be crushed and ground to prepare experimental samples with fine particle size or even nanometer level. Generally speaking, the harder and more brittle the material is, the easier it is to grind and crush. Usually, a freezing grinding device is used to grind the sample. When the freezing grinding device is used, the spacing between the two grinding rollers is generally fixed, which makes it inconvenient to adjust the spacing between the two grinding rollers according to the grinding needs. Therefore, a freezing grinding device is proposed to facilitate the adjustment of the spacing between the grinding rollers. Utility Model Content
[0003] In view of the problems in the prior art, the utility model provides a freezing and grinding device.
[0004] The technical solution adopted by the utility model to solve its technical problems is a freezing grinding device, including a box body, a first motor is fixed on one side of the box body, the output shaft of the first motor is connected to the first grinding roller arranged in the box body through a coupling, a second grinding roller and a support are provided on one side of the first grinding roller, a support plate is fixed on one side of the support, a second motor is fixed on the support plate, the output shaft of the second motor is connected to one end of the second grinding roller through a coupling, the other end of the second grinding roller is rotatably connected to the support, and a water supply for the support plate and the output shaft of the second motor is provided on the box body. A horizontally movable through groove, a hydraulic cylinder is fixed on the outer wall of the box body, the piston rod of the hydraulic cylinder is connected to the support, a feed port is provided at the top of the box body, a cover plate is provided in the feed port, a hopper and a shell are provided below the cover plate, the top of the hopper is connected to the box body, the shell is connected to the hopper, the bottom end of the hopper passes through the shell, a collecting box and a baffle are provided below the hopper, splints are provided on both sides of the baffle, the two splints are connected to the box body, one end of the baffle extends outside the box body, a liquid nitrogen inlet pipe is fixed to one side of the shell, a valve is fixed to the other side of the shell, the valve and the liquid nitrogen inlet pipe both extend outside the box body.
[0005] By adopting the above technical solution, liquid nitrogen is introduced into the shell through the liquid nitrogen inlet tube, and the sample to be ground is put into the hopper and then the cover plate is closed. The liquid nitrogen in the shell can keep the sample in the hopper and the inside of the box in a low temperature state. The output shaft of the first motor drives the first grinding roller to rotate, and the output shaft of the second motor drives the second grinding roller to rotate. The piston rod of the hydraulic cylinder drives the support to move horizontally, so that the distance between the first grinding roller and the second grinding roller can be adjusted according to needs. The baffle is pulled, and the sample in the hopper falls, and the rotating first grinding roller and second grinding roller grind the sample. The ground sample falls into the collection box, which is convenient for sample collection.
[0006] Specifically, an observation window is provided on a side of the box body away from the first motor, a vacuum glass is provided in the observation window, and one side of the vacuum glass is connected to the box body through a hinge.
[0007] By adopting the above technical solution, the situation inside the box can be easily observed through the observation window and the vacuum glass.
[0008] Specifically, two cross bars are fixed to a side of the support away from the first grinding roller, and ends of the two cross bars away from the support are both sleeved, and the two sleeves are connected to the box body.
[0009] By adopting the above technical solution and the arrangement of the cross bar and the sleeve, the stability of the support can be improved.
[0010] Specifically, a first scraper is provided under the first grinding roller, and the side of the first scraper close to the first motor is connected to the box body. A second scraper is provided under the second grinding roller, and two connecting rods are fixed on the side of the second scraper away from the first scraper, and the ends of the two connecting rods away from the second scraper are connected to the support.
[0011] By adopting the above technical solution, the first scraper can clean the sample attached to the first grinding roller, and the second scraper can clean the sample attached to the second grinding roller.
[0012] Specifically, thermal insulation cotton is fixed to the bottom end of the cover plate and the inner wall of the box body.
[0013] By adopting the above technical solution and setting the thermal insulation cotton, the thermal insulation effect can be improved.
[0014] Specifically, a handle is fixed to the top of the cover plate and to a side of the collecting box away from the first motor.
[0015] By adopting the above technical solution, the cover plate and the collection box can be conveniently taken in and out by holding the handle.
[0016] Beneficial effects of the utility model:
[0017] (1) The utility model discloses a freezing and grinding device, in which liquid nitrogen is introduced into the outer shell through a liquid nitrogen inlet tube, and the sample to be ground is put into the hopper and then covered with a cover plate. The liquid nitrogen in the outer shell can keep the sample in the hopper and the inside of the box in a low-temperature state. The output shaft of the first motor drives the first grinding roller to rotate, and the output shaft of the second motor drives the second grinding roller to rotate. The piston rod of the hydraulic cylinder drives the support to move horizontally, so that the distance between the first grinding roller and the second grinding roller can be adjusted according to the needs. The baffle is pulled, and the sample in the hopper falls. The rotating first grinding roller and the second grinding roller grind the sample, and the ground sample falls into the collection box, which is convenient for sample collection.
[0018] (2) In the freezing and grinding device described in the utility model, the arrangement of the cross bar and the sleeve can improve the stability of the support, the first scraper can clean the sample attached to the first grinding roller, and the second scraper can clean the sample attached to the second grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0020] Figure 1 It is a schematic diagram of the structure of the utility model;
[0021] Figure 2 It is a cross-sectional view of the box body of the utility model;
[0022] Figure 3 It is a top view of the combination of the first motor, the second motor, the first grinding roller, the second grinding roller and the support of the utility model.
[0023] In the figure: 1. box body; 2. cover plate; 3. valve; 4. vacuum glass; 5. hopper; 6. liquid nitrogen inlet pipe; 7. thermal insulation cotton; 8. outer shell; 9. first grinding roller; 10. first scraper; 11. collecting box; 12. second grinding roller; 13. second scraper; 14. connecting rod; 15. support; 16. cross bar; 17. sleeve; 18. hydraulic cylinder; 19. clamping plate; 20. baffle; 21. first motor; 22. second motor; 23. support plate. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0025] In order to facilitate the adjustment of the distance between the first grinding roller 9 and the second grinding roller 12, as an embodiment of the present utility model, Figure 1 , Figure 2 , Figure 3As shown, a freezing grinding device described in the utility model includes a box body 1, one side of the box body 1 is fixed with a first motor 21 by bolts, the output shaft of the first motor 21 is connected to the first grinding roller 9 arranged in the box body 1 through a coupling, one side of the first grinding roller 9 is provided with a second grinding roller 12 and a support 15, one side of the support 15 is welded and fixed with a support plate 23, the support plate 23 is fixed with a second motor 22 by bolts, the output shaft of the second motor 22 is connected to one end of the second grinding roller 12 through a coupling, the other end of the second grinding roller 12 is rotatably connected to the support 15, the box body 1 is provided with a through groove for horizontal movement of the output shaft of the support plate 23 and the second motor 22, and the outer side of the box body 1 A hydraulic cylinder 18 is fixed to the wall by bolts, and the piston rod of the hydraulic cylinder 18 is connected to the support 15 by bolts. A feed port is provided at the top of the box body 1, and a cover plate 2 is provided in the feed port. A hopper 5 and an outer shell 8 are provided below the cover plate 2. The top of the hopper 5 is welded to the box body 1, and the outer shell 8 is welded to the hopper 5. The bottom end of the hopper 5 passes through the outer shell 8. A collecting box 11 and a baffle 20 are provided below the hopper 5. Clamps 19 are provided on both sides of the baffle 20. The two clamps 19 are welded to the box body 1, and one end of the baffle 20 extends to the outside of the box body 1. A liquid nitrogen inlet pipe 6 is welded and fixed to one side of the outer shell 8, and a valve 3 is welded and fixed to the other side of the outer shell 8. The valve 3 and the liquid nitrogen inlet pipe 6 extend to the outside of the box body 1.
[0026] When in use, the sample to be ground is put into the hopper 5 and then the cover plate 2 is closed. The liquid nitrogen in the outer shell 8 can keep the sample in the hopper 5 and the inside of the box 1 in a low-temperature state. The output shaft of the first motor 21 drives the first grinding roller 9 to rotate, and the output shaft of the second motor 22 drives the second grinding roller 12 to rotate. The piston rod of the hydraulic cylinder 18 drives the support 15 to move horizontally, so that the distance between the first grinding roller 9 and the second grinding roller 12 can be adjusted as needed. The baffle 20 is pulled, and the sample in the hopper 5 falls. The rotating first grinding roller 9 and the second grinding roller 12 grind the sample, and the ground sample falls into the collection box 11, which is convenient for sample collection.
[0027] In order to facilitate observation of the situation inside the box 1, for example, Figure 1 As shown, an observation window is provided on a side of the box body 1 away from the first motor 21 , and a vacuum glass 4 is provided in the observation window. One side of the vacuum glass 4 is connected to the box body 1 through a hinge.
[0028] In order to improve the stability of the support 15, for example, Figure 2 As shown, two cross bars 16 are welded and fixed to one side of the support 15 away from the first grinding roller 9 , and the ends of the two cross bars 16 away from the support 15 are both covered with sleeves 17 , and the two sleeves 17 are both welded and connected to the box body 1 .
[0029] In order to facilitate cleaning of the first grinding roller 9 and the second grinding roller 12, exemplary, as Figure 2 As shown, a first scraper 10 is provided below the first grinding roller 9, and the first scraper 10 is welded to the box body 1 on the side close to the first motor 21. A second scraper 13 is provided below the second grinding roller 12, and two connecting rods 14 are welded and fixed to the side of the second scraper 13 away from the first scraper 10, and the ends of the two connecting rods 14 away from the second scraper 13 are welded to the support 15.
[0030] In order to improve the heat preservation effect, for example, Figure 2 As shown, the bottom end of the cover plate 2 and the inner wall of the box body 1 are fixed with thermal insulation cotton 7 by adhesive.
[0031] In order to facilitate the taking and placing of the cover plate 2 and the collecting box 11, for example, Figure 1 As shown, handles are welded and fixed to the top of the cover plate 2 and the side of the collecting box 11 away from the first motor 21 .
[0032] When the utility model is used, liquid nitrogen is introduced into the housing 8 through the liquid nitrogen introduction tube 6, and the sample to be ground is put into the hopper 5 and then the cover plate 2 is covered. The liquid nitrogen in the housing 8 can keep the sample in the hopper 5 and the inside of the box 1 in a low temperature state;
[0033] The output shaft of the first motor 21 drives the first grinding roller 9 to rotate, the output shaft of the second motor 22 drives the second grinding roller 12 to rotate, and the piston rod of the hydraulic cylinder 18 drives the support 15 to move horizontally, so as to facilitate the adjustment of the distance between the first grinding roller 9 and the second grinding roller 12 as needed, and the baffle 20 is pulled, and the sample in the hopper 5 falls, and the rotating first grinding roller 9 and the second grinding roller 12 grind the sample, and the ground sample falls into the collecting box 11, which is convenient for sample collection.
[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.
Claims
1. A freezing and grinding device, characterized in that: The invention comprises a box body (1), a first motor (21) is fixed on one side of the box body (1), an output shaft of the first motor (21) is connected to a first grinding roller (9) arranged in the box body (1) through a coupling, a second grinding roller (12) and a support (15) are arranged on one side of the first grinding roller (9), a support plate (23) is fixed on one side of the support (15), a second motor (22) is fixed on the support plate (23), an output shaft of the second motor (22) is connected to one end of the second grinding roller (12) through a coupling, and the other end of the second grinding roller (12) is rotatably connected to the support (15), a through groove for horizontal movement of the support plate (23) and the output shaft of the second motor (22) is provided on the box body (1), and a hydraulic cylinder (18) is fixed on the outer wall of the box body (1), and the hydraulic cylinder The piston rod of (18) is connected to the support (15), the top of the box body (1) is provided with a feed port, a cover plate (2) is provided in the feed port, a hopper (5) and a shell (8) are provided below the cover plate (2), the top of the hopper (5) is connected to the box body (1), the shell (8) is connected to the hopper (5), the bottom end of the hopper (5) passes through the shell (8), a collecting box (11) and a baffle (20) are provided below the hopper (5), both sides of the baffle (20) are provided with clamping plates (19), the two clamping plates (19) are connected to the box body (1), one end of the baffle (20) extends to the outside of the box body (1), a liquid nitrogen inlet pipe (6) is fixed to one side of the shell (8), and a valve (3) is fixed to the other side of the shell (8), and the valve (3) and the liquid nitrogen inlet pipe (6) both extend to the outside of the box body (1).
2. A freezing and grinding device according to claim 1, characterized in that: An observation window is provided on a side of the box body (1) away from the first motor (21), a vacuum glass (4) is provided in the observation window, and one side of the vacuum glass (4) is connected to the box body (1) via a hinge.
3. A freezing and grinding device according to claim 1, characterized in that: Two cross bars (16) are fixed to the side of the support (15) away from the first grinding roller (9), and the ends of the two cross bars (16) away from the support (15) are both covered with sleeves (17), and the two sleeves (17) are both connected to the box body (1).
4. A freezing and grinding device according to claim 1, characterized in that: A first scraper (10) is provided below the first grinding roller (9), and the first scraper (10) is connected to the box body (1) at a side close to the first motor (21). A second scraper (13) is provided below the second grinding roller (12), and two connecting rods (14) are fixed to a side of the second scraper (13) away from the first scraper (10), and the ends of the two connecting rods (14) away from the second scraper (13) are connected to a support (15).
5. A freezing and grinding device according to claim 1, characterized in that: Thermal insulation cotton (7) is fixed to the bottom end of the cover plate (2) and the inner wall of the box body (1).
6. A freezing and grinding device according to claim 1, characterized in that: A handle is fixed to the top of the cover plate (2) and to the side of the collection box (11) away from the first motor (21).