Sample preparation pulverizer
By fixing the screw with a limiting mechanism, the stability problem of the mortar caused by screw loosening is solved, thus improving the stability of the crushing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBI JINGZHONG TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
The screw of the existing sample pulverizer is prone to loosening under vibration and long-term operation, which leads to a decrease in the clamping force of the mortar and affects the stability of the pulverizing process.
The screw is fixed by a limiting mechanism, which includes a polygonal structure design of limiting post and limiting ring. The screw is prevented from loosening by the cooperation of the slot and the block, and the friction is increased by the rubber pad to ensure a tight fit between the screw and the limiting ring.
It improves the stability of the grinding process in the mortar, prevents the screw from loosening during vibration, ensures the stability of the clamping force, and enhances the grinding effect.
Smart Images
Figure CN224142417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sample preparation and pulverizing machine technology, specifically to a sample preparation and pulverizing machine. Background Technology
[0002] A sample pulverizer is a mechanical device used to pulverize various materials into specific particle sizes to meet the needs of testing and analysis. In many fields such as scientific research, geological exploration, metallurgy, and chemical industry, it is often necessary to pulverize various samples to meet the needs of subsequent analysis and testing, so sample pulverizers are frequently used.
[0003] Currently, many existing sample crushers use a screw clamping mechanism to compress the mortar, but lack measures to limit the movement of the internal screw. With the continuous vibration of the mortar and screw, the screw is very prone to loosening under continuous vibration, impact, and long-term operation. Once the screw loosens, the clamping force of the mortar will decrease, making the mortar prone to displacement and shaking during vibration, resulting in reduced stability during the crushing process and certain limitations. Utility Model Content
[0004] In view of this, the present invention provides a sample preparation pulverizer that can limit and fix the screw after the mortar is compressed, so as to prevent the screw from loosening during operation and thus improve the stability of the mortar pulverizing process.
[0005] To solve the above-mentioned technical problems, this utility model provides a sample pulverizer, including a housing and a material bowl installed inside the housing. The housing is provided with a pressure plate for pressing down and fixing the material bowl, and also with a driving component for driving the pressure plate to descend. The driving component for driving the pressure plate to descend can be a structure such as a linear slide table commonly used in the prior art. A screw is installed on the upper part of the pressure plate, which drives the pressure plate to descend by rotation. The material bowl is pressed by the screw in the screw clamping mechanism. A limiting mechanism is provided on the upper part of the screw for fixing the position of the screw. It can limit and fix the screw after pressing the material bowl, preventing the screw from loosening during operation, thereby improving the stability of the material bowl pulverization process.
[0006] The chamber contains a vibrating plate and a drive unit that drives the vibrating plate. The drive unit is a common vibrating motor or similar device. The material bowl is installed at the upper center of the vibrating plate. A fixed column with an L-shaped cross-section is installed on one side of the upper part of the vibrating plate. A clamping frame is installed at the end of the fixed column. The screw is rotatably located inside the clamping frame. The pressure plate is located on the lower outside of the clamping frame. A rocker arm is rotatably installed at the upper end of the clamping frame. The lower end of the rocker arm penetrates the upper wall of the clamping frame and is connected to the upper part of the screw. A limiting mechanism is located at the upper part of the clamping frame. The rocker arm can be limited and fixed by the limiting mechanism, thereby limiting and fixing the screw.
[0007] The limiting mechanism includes a connecting block fixedly connected to the rocker arm, a limiting post sleeved on the surface of the connecting block (but not fixedly connected to the connecting block), a through groove in the center of the limiting post, and the limiting post fitting onto the connecting block through the through groove. The inner wall of the through groove of the limiting post has several slots, which are densely distributed. The surface of the connecting block has several locking blocks that fit into the slots, and these locking blocks engage within the slots. The outer surface of the limiting post is fitted with a corresponding limiting ring. The lower part is fixed to the upper wall of the clamping frame. The cross-section of the outer ring of the limiting post is a polygonal structure. The cross-section of the inner ring of the limiting ring matches the cross-section of the outer wall of the limiting post. When the limiting post is inserted into the limiting ring, the limiting post is fixed together with the limiting ring. Since the locking block of the connecting block is located in the locking groove of the limiting post, the connecting block cannot rotate, thus limiting the position of the rocker arm and fixing the screw, preventing the screw from rotating. This prevents the screw from loosening during the vibration of the mortar and improves the stability of the mortar crushing process.
[0008] The outer ring of the limiting post has a hexagonal cross-section, which allows for a better fit between the limiting post and the limiting ring.
[0009] The upper two sides of the limit post are equipped with levers, and the surface of the levers is equipped with anti-slip protrusions. The anti-slip protrusions improve the anti-slip performance of the levers and prevent the hands from slipping. Pulling the levers will release the limit on the rocker arm and screw, so that the operator can turn the rocker arm and screw again to drive the pressure plate to rise.
[0010] Rubber pads are provided on the surfaces where the limiting post and the limiting ring fit together, and the surface of the rubber pads is covered with raised strips, which can increase the friction between the limiting post and the limiting ring. Furthermore, the raised strips of the rubber pads between the limiting post and the limiting ring can interlock with each other, thereby making the limiting post and the limiting ring fit together more tightly, so that the limiting post will not detach from the limiting ring when the device vibrates.
[0011] The upper center of the vibrating plate is equipped with an installation ring, and an installation groove is opened in the installation ring. The bottom of the material bowl is equipped with a retaining ring, which is inserted into the installation groove. The worker inserts the retaining ring at the bottom of the material bowl into the installation groove to limit the position of the material bowl and improve its stability.
[0012] The clamping frame has a movable block that slides up and down inside, and the movable block is threaded to the surface of the screw. The movable block has sliders on both sides. The clamping frame has grooves on both sides that fit the sliders. The sliders slide in the grooves. The sliders have fixed plates at their ends, and pressure plates are located on the lower end of the fixed plates. When the screw rotates, it drives the movable block and sliders to descend. The movable block drives the fixed plate and pressure plates to descend, thereby fixing the material bowl with the pressure plates.
[0013] A rubber pad is provided on the lower end face of the pressure plate. The rubber pad can prevent the pressure plate from damaging the material bowl. At the same time, the elasticity of the rubber pad can increase the distance that the pressure plate can press down. The rocker arm can be rotated or rotated in the opposite direction to synchronize the positioning post with the connecting block and the positioning ring. The elasticity of the rubber pad can make the pressure plate stably fix the material bowl.
[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0015] 1. When using this utility model, the screw can be limited and fixed after the mortar is tightened to prevent the screw from loosening during operation, thereby improving the stability of the mortar crushing process.
[0016] 2. When using this utility model, the position of the rocker arm can be limited, thereby limiting and fixing the screw, preventing the screw from rotating. This prevents the screw from loosening during the vibration of the mortar and improves the stability of the mortar crushing process.
[0017] 3. When this utility model is used, it can increase the friction between the limiting post and the limiting ring, and the protrusions of the rubber pad between the limiting post and the limiting ring can be interlocked with each other, so that the limiting post and the limiting ring fit more tightly, and the limiting post will not detach from the limiting ring when the device vibrates.
[0018] 4. When using this utility model, the elasticity of the rubber pad allows the pressure plate to press down a greater distance. The rocker arm can be rotated or rotated in the opposite direction to achieve synchronous alignment between the limiting post, the connecting block, and the limiting ring. The elasticity of the rubber pad allows the pressure plate to stably fix the material bowl. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0020] Figure 2 This is a cross-sectional view of the internal structure of the clamping frame of this utility model and a schematic diagram of the structure after the limiting block is pulled out.
[0021] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0022] Figure 4 This is a schematic diagram of the structure of the material bowl after it is removed from the present invention;
[0023] Figure 5 This is a schematic diagram of the bottom structure of the material bowl of this utility model.
[0024] Explanation of reference numerals in the attached drawings: 100, housing; 200, vibrating plate; 201, mounting ring; 202, mounting groove; 300, fixing post; 400, clamping frame; 401, rocker arm; 402, screw; 403, movable block; 404, slider; 405, fixing plate; 406, sliding groove; 500, pressure plate; 600, feed bowl; 601, retaining ring; 700, limiting ring; 701, limiting post; 702, connecting block; 703, retaining groove; 704, retaining block; 705, actuating block. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0026] According to one embodiment of the present invention, as shown in the figure... Figure 1 , Figure 2 and Figure 3 As shown: This embodiment provides a sample preparation pulverizer, including a housing 100 and a material bowl 600 installed inside the housing 100. The housing 100 is provided with a pressure plate 500 for pressing down and fixing the material bowl 600, and is also provided with a driving component for driving the pressure plate 500 to descend. The driving component for driving the pressure plate 500 to descend can be a structure such as a linear slide table commonly used in the prior art. A screw 402 is installed on the upper part of the pressure plate 500 to drive the pressure plate 500 to descend by rotation. The material bowl 600 is pressed by the screw 402 in the screw clamping mechanism. A limiting mechanism for fixing the position of the screw 402 is provided on the upper part of the screw 402.
[0027] The operator rotates the screw 402 to lower the pressure plate 500. After the pressure plate 500 presses down and fixes the mortar 600, the screw 402 is limited by the limiting mechanism, preventing it from rotating further. This limits and fixes the screw 402 after pressing the mortar 600, preventing it from loosening during operation and improving the stability of the mortar 600 during the crushing process.
[0028] according to Figure 1 and Figure 3As shown, a vibrating plate 200 is installed inside the box 100. The box 100 also has a driving component that drives the vibrating plate 200 to vibrate. The driving component is a common vibrating motor or other equipment on the market. The material bowl 600 is installed at the upper center of the vibrating plate 200. A fixing column 300 is installed on one side of the upper part of the vibrating plate 200. The cross-section of the fixing column 300 is L-shaped. A clamping frame 400 is installed at the end of the fixing column 300. The screw 402 is rotatably installed inside the clamping frame 400. The pressure plate 500 is located outside and below the clamping frame 400. A rocker arm 401 is rotatably installed at the upper end of the clamping frame 400. The lower end of the rocker arm 401 penetrates the upper wall of the clamping frame 400 and is connected to the upper part of the screw 402. The limiting mechanism is located at the upper part of the clamping frame 400.
[0029] Since the rocker arm 401 and the screw 402 are connected to each other, the rocker arm 401 can be limited and fixed by the limiting mechanism, thereby limiting and fixing the screw 402.
[0030] according to Figure 3 As shown, the limiting mechanism includes a connecting block 702 disposed on the surface of the rocker arm 401. The connecting block 702 is fixedly connected to the rocker arm 401. A limiting post 701 is sleeved on the surface of the connecting block 702, but the limiting post 701 is not fixedly connected to the connecting block 702. A through groove is formed in the center of the limiting post 701, and the limiting post 701 is sleeved on the connecting block 702 through the through groove. Several slots 703 are formed on the inner wall of the through groove of the limiting post 701. The number of slots 703 is multiple. The distribution of each slot 703 is relatively dense. The surface of the connecting block 702 is provided with several slot blocks 704 that are adapted to the slot 703. The slot blocks 704 are snapped into the slot 703. The outer surface of the limiting post 701 is fitted with a limiting ring 700 that is adapted to it. The lower part of the limiting ring 700 is fixed to the upper wall of the clamping frame 400. The cross-section of the outer ring of the limiting post 701 is a polygonal structure. The cross-section of the inner ring of the limiting ring 700 is adapted to the cross-section of the outer wall of the limiting post 701.
[0031] The operator can rotate the rocker arm 401 to drive the screw 402 to rotate. Simultaneously, the rocker arm 401 will drive the connecting block 702 to rotate synchronously. After the screw 402 drives the pressure plate 500 to press down and fix the material bowl 600, the operator aligns the limiting post 701 with the limiting ring 700 and inserts it into the locking block 704, so that the limiting post 701 is engaged within the limiting ring 700. At the same time, the locking block 704 on the surface of the connecting block 702 will engage with the locking groove 703 on the inner ring of the limiting post 701. Since the position of the limiting ring 700 is fixed, and the outer ring of the limiting post 701... Both the inner ring of the limiting ring 700 and the limiting ring 700 are mutually compatible polygonal structures. Therefore, when the limiting post 701 is inserted into the limiting ring 700, the limiting post 701 is fixed together with the limiting ring 700. Since the locking block 704 of the connecting block 702 is located in the locking groove 703 of the limiting post 701, the connecting block 702 cannot rotate, thereby limiting the position of the rocker arm 401 and fixing the screw 402, so that the screw 402 cannot rotate. This can prevent the screw 402 from loosening during the vibration of the mortar 600 and improve the stability of the mortar 600 during the crushing process.
[0032] according to Figure 3 As shown, the cross-section of the outer ring of the limiting post 701 is a hexagonal structure;
[0033] The hexagonal structure of the limiting post 701 allows for a better fit between it and the limiting ring 700.
[0034] according to Figure 3 As shown, the upper two sides of the limiting post 701 are provided with levers, and the surface of the levers is provided with anti-slip protrusions. The anti-slip protrusions are used to improve the anti-slip performance of the levers and prevent the hand from slipping.
[0035] When it is necessary to remove the limit on the material bowl 600, lift the lever upward, so that the lever moves the limit post 701 upward, thereby disengaging the limit post 701 from the limit ring 700. This causes the locking block 704 on the surface of the connecting block 702 to disengage from the locking groove 703 of the inner ring of the limit post 701, thereby removing the limit on the connecting block 702. In turn, the limit on the rocker arm 401 and the screw 402 is removed, allowing the operator to rotate the rocker arm 401 and the screw 402 again to drive the pressure plate 500 to rise.
[0036] according to Figure 3 As shown, rubber pads are provided on the surfaces where the limiting post 701 and the limiting ring 700 are in contact with each other, and the surface of the rubber pads is distributed with raised strips.
[0037] When the operator inserts the limiting post 701 into the limiting ring 700, the rubber pad on the outer ring of the limiting post 701 and the rubber pad on the inner ring of the limiting ring 700 fit together tightly. Because the rubber pad has a certain elasticity, it can increase the friction between the limiting post 701 and the limiting ring 700. Furthermore, the protrusions of the rubber pad between the limiting post 701 and the limiting ring 700 can interlock with each other, thereby making the fit between the limiting post 701 and the limiting ring 700 tighter and preventing the limiting post 701 from detaching from the limiting ring 700 when the device vibrates.
[0038] According to another embodiment of the present invention, such as Figure 4 As shown, a mounting ring 201 is provided at the upper center of the vibrating plate 200, and a mounting groove 202 is provided inside the mounting ring 201. A retaining ring 601 is provided at the bottom of the material bowl 600, and the retaining ring 601 is inserted into the mounting groove 202.
[0039] The staff inserts the retaining ring 601 at the bottom of the material bowl 600 into the mounting groove 202 to limit the position of the material bowl 600 and improve its stability.
[0040] according to Figure 5 As shown, a movable block 403 is slidably arranged inside the clamping frame 400, and the movable block 403 is threadedly connected to the surface of the screw 402. Slider blocks 404 are arranged on both sides of the movable block 403. Slide grooves 406 adapted to the sliders 404 are opened on both sides of the surface of the clamping frame 400. The sliders 404 are slidably arranged in the slide grooves 406. A fixing plate 405 is arranged at the end of the slider 404, and the pressure plate 500 is arranged on the lower end surface of the fixing plate 405.
[0041] When the operator turns the rocker arm 401 to drive the screw 402 to rotate, the sliding block 404 and the sliding groove 406 cooperate to limit the movable block 403, so that the movable block 403 can only move up and down. As a result, when the screw 402 rotates, it drives the movable block 403 and the sliding block 404 to descend. The movable block 403 drives the fixed plate 405 and the pressure plate 500 to descend, thereby fixing the material bowl 600 with the pressure plate 500.
[0042] according to Figure 3 As shown, a rubber pad is provided on the lower end face of the pressure plate 500. The rubber pad can prevent the pressure plate 500 from damaging the mortar 600, and the elasticity of the rubber pad can increase the distance that the pressure plate 500 can press down.
[0043] When the operator has difficulty aligning the limiting post 701 with the connecting block 702 and the limiting ring 700 synchronously, the rocker arm 401 can be rotated or rotated in the opposite direction to achieve synchronous alignment between the limiting post 701, the connecting block 702 and the limiting ring 700. The elasticity of the rubber pad allows the pressure plate 500 to stably fix the mortar 600.
[0044] The above description is the preferred embodiment 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. A sample preparation pulverizer comprising a housing (100) and a mortar (600) installed inside the housing (100), characterized by: The housing (100) is provided with a pressure plate (500) for pressing down and fixing the material bowl (600). A screw (402) is installed on the upper part of the pressure plate (500) to drive the pressure plate (500) to descend by rotation. A limiting mechanism for fixing the position of the screw (402) is provided on the upper part of the screw (402).
2. A sample preparation mill as claimed in claim 1, characterized in that: The box (100) is equipped with a vibrating plate (200) inside. The feed bowl (600) is installed at the upper center of the vibrating plate (200). A fixing column (300) is provided on one side of the upper part of the vibrating plate (200). A clamping frame (400) is provided at the end of the fixing column (300). The screw (402) is rotatably disposed inside the clamping frame (400). A rocker arm (401) is rotatably disposed at the upper end of the clamping frame (400). The lower end of the rocker arm (401) is connected to the upper part of the screw (402). The limiting mechanism is located at the upper part of the clamping frame (400).
3. A sample preparation mill as claimed in claim 1 or 2, characterised in that: The limiting mechanism includes a connecting block (702) disposed on the surface of the rocker arm (401). A limiting post (701) is sleeved on the surface of the connecting block (702). The inner wall of the limiting post (701) is provided with a plurality of slots (703). A plurality of locking blocks (704) adapted to the slots (703) are disposed on the surface of the connecting block (702), and the locking blocks (704) are locked in the slots (703). A limiting ring (700) adapted to the limiting post (701) is sleeved on the outer surface of the limiting post (701). The lower part of the limiting ring (700) is fixed to the upper wall of the clamping frame (400). The cross-section of the outer ring of the limiting post (701) is a polygonal structure. The cross-section of the inner ring of the limiting ring (700) is adapted to the cross-section of the outer wall of the limiting post (701).
4. A sample preparation mill as claimed in claim 3, characterised in that: The outer ring of the limiting post (701) has a hexagonal cross-section.
5. A sample preparation mill as claimed in claim 3, characterized in that: The upper two sides of the limiting post (701) are provided with levers.
6. A sample preparation mill as claimed in claim 3, characterized in that: The surfaces of the limiting post (701) and the limiting ring (700) that are in contact with each other are provided with rubber pads, and the surface of the rubber pads is distributed with raised strips.
7. A sample preparation mill as claimed in claim 2, characterized in that: The upper center of the vibrating plate (200) is provided with an installation ring (201), and an installation groove (202) is provided in the installation ring (201). The bottom of the material bowl (600) is provided with a retaining ring (601), and the retaining ring (601) is inserted into the installation groove (202).
8. A sample preparation mill as claimed in claim 2, characterized in that: The clamping frame (400) has a movable block (403) that slides up and down inside, and the movable block (403) is threaded to the surface of the screw (402). The movable block (403) has sliders (404) on both sides. The clamping frame (400) has grooves (406) on both sides that are adapted to the sliders (404). The sliders (404) are slidably disposed in the grooves (406). The end of the sliders (404) is provided with a fixing plate (405), and the pressure plate (500) is disposed on the lower end face of the fixing plate (405).
9. A sample preparation mill as claimed in claim 1, characterized in that: A rubber pad is provided on the lower end face of the pressure plate (500).