Material crushing device for chemical analysis

Abstract

The invention relates to the technical field of material crushing, in particular to a material crushing device for chemical analysis, which comprises a base, one end of the base is fixedly connected with a support plate, one end of the support plate is provided with a fixing frame, and the fixing frame is provided with a crushing and conveying structure. The crushing and conveying structure comprises a crushing block capable of moving up and down and a crushing box capable of correspondingly sliding left and right, the crushing box can correspondingly convey materials and reset along with up-down extrusion of the crushing block, and a filtering structure matched with the crushing and conveying structure is arranged at the lower end of the fixing frame; the filtering structure comprises a filtering disc arranged on the inner end face of the smashing box, a first filtering plate and a second filtering plate are symmetrically arranged at the two ends of the filtering disc correspondingly, and a discharging structure matched with the filtering structure is arranged on the filtering disc. The problems that in the prior art, due to the fact that materials cannot be smashed and collected at the same time, the working efficiency is low, and safety influence exists in material filtering are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of material crushing, and in particular to a material crushing device for chemical analysis. Background Art

[0002] Chemical engineering is the abbreviation of chemical engineering. Any technology that uses chemical methods to change the composition and structure of substances or synthesize new substances belongs to chemical production technology, that is, chemical process. The resulting products are called chemicals or chemical products. During chemical analysis, chemical products need to be crushed and sampled for analysis.

[0003] Existing material crushing equipment usually directly uses a crushing wheel to crush the material, and then screens the crushed material for collection, sampling and analysis. This crushing and collection method has the following shortcomings: 1. Crushing and collection usually cannot be carried out at the same time, and the filter cannot be replaced in time according to the needs of material particle size analysis and testing, which affects work efficiency; 2. Since chemical materials are usually harmful to the human body, the use of screening methods can easily cause the powder of the crushed materials to float away, which can be inhaled by the human body and cause safety accidents. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a material crushing device for chemical analysis, which effectively solves the problems in the prior art that the material cannot be crushed and collected at the same time, resulting in low work efficiency and safety impact of material filtration.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A material crushing device for chemical analysis comprises a base, one end of the base is fixedly connected to a support plate, one end of the support plate is provided with a fixing frame, a crushing and feeding structure is provided on the fixing frame, the crushing and feeding structure comprises a crushing block which can be displaced up and down and a crushing box which can slide left and right accordingly, and the crushing box can feed and reset accordingly with the up and down squeezing of the crushing block, a filtering structure matched with the crushing and feeding structure is provided at the lower end of the fixing frame, the filtering structure comprises a filter disc arranged on the inner end surface of the crushing box, a first filter plate and a second filter plate are symmetrically arranged at both ends of the filter disc, a discharge structure matched with the filter structure is provided on the filter disc, and the discharge structure comprises a first rotating baffle plate and a second rotating baffle plate which are respectively arranged at the positions of the first filter plate and the second filter plate.

[0006] The cam is provided with a first end fixedly connected to the drive frame, and the second end of the first end is provided with a second end fixedly connected to the drive frame, and the cam is provided with a second end fixedly connected to the drive frame.

[0007] Preferably, a pair of limit blocks are respectively provided at the upper end of the base, the crushing box is provided between the limit blocks, and first sliding pins slidably connected to the inner walls of the limit blocks are respectively provided at both ends of the crushing box, one end of the crushing box is open, and a loading plate fixedly connected to the crushing box is provided at the lower end at the open position, and a splicing box is integrally provided at the other end of the crushing box, the interior of the splicing box is in the shape of an inclined groove, and the bottom of the inclined groove is connected to the inner wall of the crushing box.

[0008] Preferably, a storage box detachably connected to the base is provided at the lower end of the pulverizing box, and the storage box corresponds to the loading plate in the initial position.

[0009] Preferably, the filtering structure also includes a fixed plate arranged at the lower end of the fixed frame, the filter disc is rotatably arranged on the fixed plate, the filter disc is coaxially fixedly connected with a worm gear, the worm gear is engaged with a worm rotatably connected to the fixed plate, the first filter plate and the second filter plate are centrally symmetrically arranged and a plurality of filter holes are evenly opened on both, the filter holes on the first filter plate are larger than the filter holes on the second filter plate and the arc-shaped ends of the first filter plate and the second filter plate are respectively fitted with the crushing box.

[0010] Preferably, the discharging structure also includes a sliding column fixedly connected to the center position of the filter disc, a central block is slidably connected to the sliding column, two ends of the central block are respectively rotatably connected to the first support rod and the second support rod, one end of the first support rod is rotatably connected to the first turn baffle plate, and one end of the second support rod is rotatably connected to the second turn baffle plate, a spring connected to the sliding column sleeve is provided between the central block and the filter disc, and two ends of the spring are respectively fixedly connected to the central block and the filter disc, a support rod is fixedly connected to the central block, and a block is fixedly connected to the crushing box, and an adapter groove corresponding to the support rod is opened on the block.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with a crushing and feeding structure and a filtering structure. During the process of transporting the material in the crushing box to one end, under the filtering action of the first filter plate or the second filter plate, the material that meets the particle size required for analysis passes through the first filter plate or the second filter plate, and the material that does not meet the particle size is squeezed down to the end of the initial position of the crushing box by the first filter plate or the second filter plate, and is squeezed and crushed again by the crushing block, so that crushing and discharging are carried out simultaneously. The combination of extrusion crushing and horizontal filtering of the filter disc not only effectively improves the work efficiency, but also reduces the dispersion of chemical material dust compared to the traditional filter screen drop, and avoids personnel from inhaling chemical particles and causing harm.

[0012] 2. By setting a discharging structure, when the material passes through the first filter plate or the second filter plate and stays in the crushing box, when the crushing box resets and moves backward, since a spring is arranged between the central connecting block and the filter plate, the spring resets the first baffle plate and the second baffle plate under the action of elastic force, and the first baffle plate and the second baffle plate can block the filter holes in the first filter plate and the second filter plate correspondingly. As the crushing box continues to move backward, the first baffle plate or the second baffle plate discharges the crushed material in the crushing box into the storage box, thereby realizing the collection of the crushed material and facilitating the detection and analysis of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a first axonometric view of the present invention; Figure 2 is a second axonometric view of the present invention; Figure 3 It is a structural schematic diagram of the slider of the present invention; Figure 4 It is a structural schematic diagram of the L-shaped rod of the present invention; Figure 5 It is a schematic diagram of the structure of the splicing box and the crushing box of the present invention; Figure 6 It is a first structural schematic diagram of the filtering structure of the present invention; Figure 7 It is a second structural schematic diagram of the filtering structure of the present invention; Figure 8 It is a first structural schematic diagram of the discharge structure of the present invention; Fig. 9 It is a second structural schematic diagram of the discharge structure of the present invention; Fig.10 For the present invention Figure 5 A partial enlarged view of area A; In the figure: 1, base, 2, support plate, 3, limit block, 4, storage box, 5, crushing box, 6, fixing frame, 7, support rod, 8, filter plate, 9, splicing box, 10, first sliding pin, 11, driving rod, 12, crushing block, 13, motor, 14, turntable, 15, splicing rod, 16, first rotating rod, 17, slider, 18, second rotating rod, 19, limit slide rod, 20, slot rod, 21, L-shaped rod, 22, push pin, 23 , fixing column, 24, first filter plate, 25, second filter plate, 26, filter hole, 27, fixing plate, 28, rotating handle, 29, worm, 30, worm wheel, 31, second rotating baffle plate, 32, middle connecting block, 33, second support rod, 34, sliding column, 35, support rod, 36, spring, 37, stopper, 38, adapter groove, 39, first rotating baffle plate, 40, first support rod, 41, loading plate, 42, bracket, 43, second sliding pin. DETAILED DESCRIPTION

[0014] like Figure 1-10 As shown, a material crushing device for chemical analysis comprises a base 1, one end of which is fixedly connected to a support plate 2, one end of which is provided with a fixing frame 6, a crushing and feeding structure is provided on the fixing frame 6, the crushing and feeding structure comprises a crushing block 12 which can be displaced up and down and a crushing box 5 which can slide left and right correspondingly, and the crushing box 5 can feed and reset correspondingly with the up and down squeezing of the crushing block 12, a filtering structure matched with the crushing and feeding structure is provided at the lower end of the fixing frame 6, the filtering structure comprises a filter disc 8 arranged on the inner end surface of the crushing box 5, the two ends of the filter disc 8 are symmetrically provided with a first filter plate 24 and a second filter plate 25, the filter disc 8 is provided with a discharge structure matched with the filter structure, the discharge structure comprises a first rotating baffle plate 39 and a second rotating baffle plate 31 which are respectively arranged at the positions of the first filter plate 24 and the second filter plate 25.

[0015] When the present invention is in use, chemical materials are added into the crushing box 5, and according to the analysis needs, the filtering structure is controlled to work, the filter disc 8 is rotated, and the first filter plate 24 and the second filter plate 25 are replaced until they are slidably fitted with the bottom of the crushing box 5 to filter the chemical materials of a certain particle size, and the crushing and feeding structure is controlled to work. When the crushing box 5 moves to one side to the initial end, the crushing block 12 falls into the crushing box 5 and squeezes and crushes the chemical materials in the crushing box 5. During the upward movement of the crushing block 12, the crushing box 5 moves to the other side to transmit and feed the crushed chemical materials of a certain particle size. At the same time, the discharging structure works, and the first rotating baffle plate 39 and the second rotating baffle plate 31 at the positions of the first filter plate 24 and the second filter plate 25 are unfolded upwardly to ensure that the chemical materials pass through the first filter plate 24 or the second filter plate 25 smoothly. During the transportation of the materials in the crushing box 5 to one end, Under the filtering action of the first filter plate 24 or the second filter plate 25, materials that meet the particle size required for analysis pass through the first filter plate 24 or the second filter plate 25, and those that do not meet the particle size are squeezed out of the first filter plate 24 or the second filter plate 25 to the end of the initial position of the crushing box 5, and are squeezed and crushed again by the crushing block 12 to achieve simultaneous crushing and discharging. The combination of extrusion crushing and horizontal filtration of the filter plate 8 not only effectively improves work efficiency, but also reduces the dispersion of chemical material dust compared to the traditional filter drop, and prevents people from inhaling chemical particles and causing harm. When the material in the crushing box 5 that has been sieved by the first filter plate 24 is reset with the crushing box 5, the first baffle plate 39 and the second baffle plate 31 are reset to block the material that passes through the first filter plate 24 or the second filter plate 25 at the front end of the crushing box 5. When the crushed material is discharged from the crushing box 5, it is collected for chemical analysis.

[0016] The crushing and feeding structure also includes a bracket 42 fixedly connected to the fixed frame 6, a motor 13 is arranged on the bracket 42, a turntable 14 is fixedly connected to the output end of the motor 13, a splicing rod 15 is fixedly connected to the turntable 14, one end of the splicing rod 15 is rotatably connected to a first turntable 16, a slider 17 is arranged in the fixed frame 6, and second sliding pins 43 slidably connected to the inner wall of the fixed frame 6 are arranged at both ends of the slider 17, a driving rod 11 is fixedly connected to the lower end of the slider 17, and the crushing block 12 is fixedly connected to the driving rod 11. The side wall of the slider 17 is provided with a slide-limiting rod 19 slidably connected to the fixed frame 6, one end of the slide-limiting rod 19 is rotatably connected to the second rotating rod 18, a pair of fixed columns 23 are provided on the fixed frame 6, and the fixed columns 23 are fixedly provided on the support rod 7, the lower end of the support rod 7 is rotatably connected to the L-shaped rod 21, one arm of the L-shaped rod 21 is rotatably connected to the second rotating rod 18, one end of the crushing box 5 is fixedly connected to the groove rod 20, and the other arm of the L-shaped rod 21 is provided with a pin 22 slidably connected to the inner wall of the groove rod 20.

[0017] like Figure 1-4 As shown, the bracket 42 supports the motor 13 and controls the motor 13 to work. The output end of the motor 13 drives the turntable 14 to rotate, the turntable 14 drives the splicing rod 15 to rotate in a circle, and the splicing rod 15 drives the first rotating rod 16 to rotate. Since one end of the first rotating rod 16 is rotatably arranged on the slider 17, the first rotating rod 16 drives the slider 17 to slide up and down under the limit of the second sliding pin 43, and the slider 17 drives the sliding limit rod 19 to slide. During the sliding process, the sliding limit rod 19 drives the second rotating rod 18 to move eccentrically. During the deflection of the second rotating rod 18, it is connected to one arm of the L-shaped rod 21 through rotation, thereby driving the L-shaped rod 21 to deflect at the axial connection with the support rod 7. During the deflection of the L-shaped rod 21, the other arm is driven to deflect. The pin 22 on the other arm of the L-shaped rod 21 drives the crushing box 5 to slide through the groove rod 20. By setting the splicing rod 15, the range of the outer circumference of the turntable 14 can be increased, thereby indirectly increasing the up and down sliding distance of the slider 17, thereby increasing the sliding distance of the crushing box 5. A pair of limit blocks 3 are respectively provided at the upper end of the base 1, and the pulverizing box 5 is provided between the limit blocks 3. Both ends of the pulverizing box 5 are respectively provided with first sliding pins 10 slidably connected to the inner walls of the limit blocks 3. One end of the pulverizing box 5 is open, and a loading plate 41 fixedly connected to the pulverizing box 5 is provided at the lower end of the open position. A splicing box 9 is integrally provided at the other end of the pulverizing box 5. The interior of the splicing box 9 is in the shape of an inclined groove, and the bottom of the inclined groove is connected to the inner wall of the pulverizing box 5.

[0018] like Figure 2 and 4 As shown, the crushing box 5 can slide along the limit block 3 under the limitation of the first sliding pin 10, and the limit block 3 plays a role of limiting the sliding of the crushing box 5, and the crushing box 5 is driven to slide under the action of the pin 22. Since the crushing box 5 and the splicing box 9 are arranged as a whole, the crushing box 5 drives the splicing box 9 to slide to the filter disc 8, ensuring that the crushed particles in the crushing box 5 meet the requirements of the material can pass through the first filter plate 24 or the second filter plate 25 as much as possible and slide down through the supporting plate 41, and the larger particles will slide into the splicing box 9. Since the interior of the splicing box 9 is in the shape of an inclined groove and the bottom of the inclined groove is connected with the inner wall of the crushing box 5, it is ensured that the unsatisfied particles in the splicing box 9 slide down along the inclined groove when the crushing box 5 is reset, and the crushing block 12 is used again to crush the unsatisfied material particles.

[0019] A storage box 4 detachably connected to the base 1 is disposed at the lower end of the crushing box 5 , and the storage box 4 corresponds to the loading plate 41 in the initial position.

[0020] like Figure 1As shown, when the crushing box 5 is reset, the first baffle plate 39 or the second baffle plate 31 will squeeze the chemical material particles passing through the first filter plate 24 or the second filter plate 25 into the storage box 4, and the storage box 4 will be used to collect the materials for chemical analysis.

[0021] The filtering structure also includes a fixing plate 27 arranged at the lower end of the fixing frame 6, the filter disc 8 is rotatably arranged on the fixing plate 27, the filter disc 8 is coaxially fixedly connected with a worm gear 30, the worm gear 30 is meshed with a worm 29 rotatably connected to the fixing plate 27, the first filter plate 24 and the second filter plate 25 are centrally symmetrically arranged and a plurality of filter holes 26 are evenly opened on both, the filter holes 26 on the first filter plate 24 are larger than the filter holes 26 on the second filter plate 25, and the arc ends of the first filter plate 24 and the second filter plate 25 are respectively in contact with the crushing box 5.

[0022] like Figure 6 and 7 As shown, a handle 28 is provided at one end of the worm 29, and the handle 28 drives the worm 29 to rotate, the worm 29 drives the worm wheel 30 to rotate, and the worm wheel 30 drives the filter disc 8 to rotate. The filter disc 8 rotates half a circle to replace the first filter plate 24 and the second filter plate 25. Since the filter holes 26 on the first filter plate 24 and the second filter plate 25 are different, the material particles can be screened according to different analysis needs.

[0023] The discharge structure also includes a sliding column 34 fixedly connected to the center position of the filter disc 8, and a central link block 32 is slidably connected to the sliding column 34. The two ends of the central link block 32 are rotatably connected to the first support rod 40 and the second support rod 33, respectively. One end of the first support rod 40 is rotatably connected to the first rotating baffle plate 39, and one end of the second support rod 33 is rotatably connected to the second rotating baffle plate 31. A spring 36 sleeved and connected to the sliding column 34 is provided between the central link block 32 and the filter disc 8, and the two ends of the spring 36 are respectively fixedly connected to the central link block 32 and the filter disc 8. A support rod 35 is fixedly connected to the central link block 32, and a stopper 37 is fixedly connected to the crushing box 5. The stopper 37 is provided with an adaptation groove 38 corresponding to the support rod 35.

[0024] like Figure 8 and 9As shown in Figure 10, when the crushing box 5 drives the crushed material to pass through the first filter plate 24 or the second filter plate 25 on the filter disc 8, since the position of the filter disc 8 is fixed, when the crushing box 5 drives the stopper 37 to move, when the adapting groove 38 on the stopper 37 contacts and squeezes the support rod 35, the support rod 35 drives the middle link block 32 to slide along the slide column 34, and the middle link block 32 drives the first support rod 40 and the second support rod 33 at both ends to deflect respectively, and the first support rod 40 and the second support rod 33 drive the first rotating baffle plate 39 and the second rotating baffle plate 31 to deflect outwardly toward each other, so as to prevent the first rotating baffle plate 39 or the second rotating baffle plate 31 from correspondingly blocking the first filter plate 24 and The second filter plate 25, when the material passes through the first filter plate 24 or the second filter plate 25 and stops in the crushing box 5, when the crushing box 5 resets and moves backward, since a spring 36 is arranged between the middle connecting block 32 and the filter plate, the spring 36 resets the first baffle plate 39 and the second baffle plate 31 under the action of elastic force, and the first baffle plate 39 and the second baffle plate 31 can block the filter holes 26 in the first filter plate 24 and the second filter plate 25 correspondingly. As the crushing box 5 continues to move backward, the first baffle plate 39 or the second baffle plate 31 discharges the crushed material in the crushing box 5 into the storage box 4, thereby realizing the collection of the crushed material and facilitating the detection and analysis of the material.

[0025] The working process of the present invention is as follows: when the present invention is in use, chemical materials are added into the crushing box 5. According to the analysis requirements, the rotating handle 28 drives the worm 29 to rotate, the worm 29 drives the worm wheel 30 to rotate, and the worm wheel 30 drives the filter disc 8 to rotate. The filter disc 8 rotates half a circle to replace the first filter plate 24 and the second filter plate 25. Since the filter holes 26 on the first filter plate 24 and the second filter plate 25 are different, the material particles can be screened according to different analysis requirements.

[0026] The control motor 13 works, the output end of the motor 13 drives the turntable 14 to rotate, the turntable 14 drives the splicing rod 15 to rotate in a circle, the splicing rod 15 drives the first rotating rod 16 to rotate, the first rotating rod 16 drives the slider 17 to slide up and down under the limit of the second sliding pin 43, the slider 17 drives the sliding limit rod 19 to slide, the sliding limit rod 19 drives the second rotating rod 18 to deflect during the sliding process, the second rotating rod 18 is connected to the rotation of one arm of the L-shaped rod 21 during the deflection process, and then drives the L-shaped rod 21 to deflect at the axial connection with the support rod 7, the L-shaped rod 21 drives the other arm to deflect during the deflection process, the pin 22 on the other arm of the L-shaped rod 21 drives the crushing box 5 to slide by the toggle slot rod 20, and the splicing rod 15 is provided to increase the range of the outer circumferential rotation of the turntable 14, thereby Then, the distance that the slider 17 slides up and down is increased, thereby increasing the sliding distance of the crushing box 5. The crushing box 5 can slide along the limit block 3 under the limit of the first sliding pin 10. The limit block 3 plays a role of limiting the sliding of the crushing box 5, and the crushing box 5 is driven to slide under the action of the pin 22. Since the crushing box 5 and the splicing box 9 are arranged as one body, the crushing box 5 drives the splicing box 9 to slide to the filter disc 8, ensuring that the materials that meet the crushed particles in the crushing box 5 can pass through the first filter plate 24 or the second filter plate 25 as much as possible, and the larger particles will slide into the splicing box 9. Since the interior of the splicing box 9 is in the shape of an inclined groove and the bottom of the inclined groove is connected with the inner wall of the crushing box 5, it is ensured that the unsatisfied particles in the splicing box 9 slide down along the inclined groove when the crushing box 5 is reset, and the crushing block 12 is used to crush the unsatisfied material particles again.

[0027] At the same time, when the crushing box 5 drives the crushed material to pass through the first filter plate 24 or the second filter plate 25 on the filter disc 8, since the position of the filter disc 8 is fixed, the crushing box 5 drives the stopper 37 to move, and when the adapter groove 38 on the stopper 37 contacts and squeezes the support rod 35, the support rod 35 drives the middle link block 32 to slide along the slide column 34, and the middle link block 32 drives the first support rod 40 and the second support rod 33 at both ends to deflect, and the first support rod 40 and the second support rod 33 drive the first rotating baffle plate 39 and the second rotating baffle plate 33 to rotate respectively. 1 deflects outwardly to prevent the first baffle plate 39 or the second baffle plate 31 from correspondingly blocking the first filter plate 24 or the second filter plate 25. When the material passes through the first filter plate 24 or the second filter plate 25 and stops in the crushing box 5, when the crushing box 5 is reset and moved backward, since a spring 36 is arranged between the middle link block 32 and the filter plate, the spring 36 resets the first baffle plate 39 and the second baffle plate 31 under the action of elastic force, and the first baffle plate 39 and the second baffle plate 31 can block the filter holes 26 in the first filter plate 24 and the second filter plate 25 accordingly. As the crushing box 5 continues to move backward, the first baffle plate 39 or the second baffle plate 31 discharges the crushed materials in the crushing box 5 into the storage box 4 to collect the crushed materials. Since the elastic force of the spring 36 is gradually released, the first baffle plate 39 or the second baffle plate 31 is gradually turned down to block. Therefore, the materials that meet the particle size can be further subdivided to meet different chemical analysis experiments. Therefore, during the transportation of the materials in the crushing box 5 to one end, under the filtering action of the first filter plate 24 or the second filter plate 25, the materials that meet the particle size required for analysis pass through the first filter plate 24 or the second filter plate 25, and the materials that do not meet the particle size are squeezed down to the end of the initial position of the crushing box 5 by the first filter plate 24 or the second filter plate 25, and are squeezed and crushed again by the crushing block 12, so that crushing and discharging are carried out simultaneously. The combination of extrusion crushing and horizontal filtration of the filter plate 8 not only effectively improves the work efficiency, but also reduces the dispersion of chemical material dust compared to the traditional filter screen drop, and avoids personnel from inhaling chemical particles and causing harm.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material crushing device for chemical analysis, comprising a base (1), characterized in that: One end of the base (1) is fixedly connected to a support plate (2), one end of the support plate (2) is provided with a fixing frame (6), a crushing and feeding structure is provided on the fixing frame (6), the crushing and feeding structure comprises a crushing block (12) which can move up and down and a crushing box (5) which can slide left and right correspondingly, and the crushing box (5) can carry out material feeding and resetting and pressing in correspondence with the up and down movement of the crushing block (12), a filtering structure matched with the crushing and feeding structure is provided at the lower end of the fixing frame (6), the filtering structure comprises a filter plate (8) arranged on the inner end surface of the crushing box (5), a first filter plate (24) and a second filter plate (25) are symmetrically arranged at both ends of the filter plate (8), a discharge structure matched with the filter structure is provided on the filter plate (8), the discharge structure comprises a first rotating baffle plate (39) and a second rotating baffle plate (31) which are respectively arranged at the positions of the first filter plate (24) and the second filter plate (25).

2. The material crushing device for chemical analysis according to claim 1, characterized in that: The crushing and feeding structure further comprises a bracket (42) fixedly connected to the fixed frame (6); a motor (13) is arranged on the bracket (42); an output end of the motor (13) is fixedly connected to a turntable (14); a splicing rod (15) is fixedly connected to the turntable (14); one end of the splicing rod (15) is rotatably connected to a first turntable (16); a slider (17) is arranged in the fixed frame (6); two ends of the slider (17) are provided with second sliding pins (43) slidably connected to the inner wall of the fixed frame (6); a lower end of the slider (17) is fixedly connected to a driving rod (11); and the crushing block (12) is fixedly connected to the driving rod (11). The side wall of the slider (17) is provided with a slide-limiting rod (19) slidably connected to the fixed frame (6); one end of the slide-limiting rod (19) is rotatably connected to the second rotating rod (18); a pair of fixed columns (23) are provided on the fixed frame (6); the fixed columns (23) are fixedly provided on the support rod (7); the lower end of the support rod (7) is rotatably connected to an L-shaped rod (21); one arm of the L-shaped rod (21) is rotatably connected to the second rotating rod (18); one end of the crushing box (5) is fixedly connected to a groove rod (20); the other arm of the L-shaped rod (21) is provided with a pin (22) slidably connected to the inner wall of the groove rod (20).

3. The material crushing device for chemical analysis according to claim 2, characterized in that: A pair of limit blocks (3) are respectively provided at the upper end of the base (1), the pulverizing box (5) is provided between the limit blocks (3), and first sliding pins (10) are respectively provided at both ends of the pulverizing box (5) and are slidably connected to the inner wall of the limit blocks (3). One end of the pulverizing box (5) is open, and a receiving plate (41) fixedly connected to the pulverizing box (5) is provided at the lower end of the open position. A splicing box (9) is integrally provided at the other end of the pulverizing box (5), and the interior of the splicing box (9) is in the shape of an inclined groove, and the bottom of the inclined groove is connected to the inner wall of the pulverizing box (5).

4. The material crushing device for chemical analysis according to claim 3, characterized in that: A storage box (4) detachably connected to the base (1) is provided at the lower end of the pulverizing box (5), and the storage box (4) corresponds to the receiving plate (41) in the initial position.

5. The material crushing device for chemical analysis according to claim 1, characterized in that: The filtering structure further comprises a fixing plate (27) arranged at the lower end of the fixing frame (6); the filter disc (8) is rotatably arranged on the fixing plate (27); the filter disc (8) is coaxially fixedly connected to a worm wheel (30); the worm wheel (30) is meshed with a worm (29) rotatably connected to the fixing plate (27); the first filter plate (24) and the second filter plate (25) are centrally symmetrically arranged and a plurality of filter holes (26) are evenly formed on both of them; the filter holes (26) on the first filter plate (24) are larger than the filter holes (26) on the second filter plate (25); and the arc-shaped ends of the first filter plate (24) and the second filter plate (25) are respectively in contact with the crushing box (5).

6. The material crushing device for chemical analysis according to claim 1, characterized in that: The discharge structure further comprises a slide post (34) fixedly connected to the center position of the filter disc (8), a central link block (32) being slidably connected to the slide post (34), a first support rod (40) and a second support rod (33) being rotatably connected at two ends of the central link block (32), one end of the first support rod (40) being rotatably connected to the first baffle plate (39), and one end of the second support rod (33) being rotatably connected to the second baffle plate (31), a spring (36) sleeved and connected to the slide post (34) being provided between the central link block (32) and the filter disc (8), and two ends of the spring (36) being fixedly connected to the central link block (32) and the filter disc (8), a support rod (35) being fixedly connected to the central link block (32), and a stopper (37) being fixedly connected to the pulverizing box (5), and an adapting groove (38) corresponding to the support rod (35) being provided on the stopper (37).

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