Crusher capable of preventing splashing during crushing

Abstract

The invention relates to the technical field of building materials, and discloses a crushing and splashing preventing crusher which comprises an opening and closing assembly, an opening and closing piece, a pull rod, a hinge block, a fixing block, a fixing plate and a door body. The stone conveying device has the beneficial effects that when stone is conveyed, the conveying speed of the conveying belt can be adjusted according to the size of the stone, the protection plates are arranged on the two sides of the conveying belt, the stone can be protected and prevented from splashing in the conveying process, the protection plates are arranged on the two sides of the conveying belt, the splashing stone can be effectively blocked and prevented from hitting an operator, and the conveying efficiency is improved. The conveying speed of the conveying belt is adjusted according to the sizes of the stones, so that the stones can be more stably conveyed on the conveying belt, the splashing phenomenon caused by too high speed is reduced, a stable production process can be maintained, equipment faults and production interruption caused by splashing of the stones are avoided, efficient ore conveying links are guaranteed, and the ore conveying efficiency is improved. Therefore, the production efficiency of whole ore extraction and processing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building materials, and particularly to a crusher that prevents fragmentation and splashing. Background Art

[0002] In ore mining operations, most of the ore mined from the mine is in large chunks. Stone crushers play a crucial role in this process. They can break these large chunks of ore into smaller sizes, creating conditions for subsequent operations such as ore dressing. After the ore is crushed, a belt conveyor is usually used to transport it to facilitate subsequent transportation work. The belt conveyor mainly consists of multiple components such as a conveyor belt, a driving device, rollers, and idlers. Among them, the driving device provides power for the entire transportation system. It drives the rollers to rotate, and the rollers drive the conveyor belt to run by relying on the friction force with the conveyor belt. The idlers are of great significance. They are used to support the weight of the conveyor belt and the materials, thereby ensuring that the conveyor belt can maintain a stable shape and guaranteeing the smoothness of the transportation process. When the crushed stones are placed on the conveyor belt, the continuous movement of the conveyor belt will drive the stones forward. The belt conveyor has a wide range of conveying capacities and can meet the needs of different production volumes. However, there is a problem in its use, that is, it cannot effectively protect the crushed stones. This situation will cause the stones to splash during transportation due to the excessive speed of the belt conveyor. These splashing stones often have high kinetic energy. Once they hit the operators who are monitoring equipment, performing maintenance, or other operations near the belt conveyor in places such as a stone processing plant or a mine, it is very likely to cause serious personal injuries, such as severe head injuries, fractures, and even minor abrasions, which pose a direct threat to their lives. Summary of the Invention

[0003] In view of the above problems existing in the existing crushers that prevent fragmentation and splashing, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is that the existing crushers cannot protect the crushed stones.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A crusher that prevents fragmentation and splashing, which includes an opening and closing assembly, including an opening and closing member, including a pulling rod, a hinge block, a fixed block, a fixing plate, and a door body. The hinge block is hinged inside the pulling rod. The pulling rod is sleeved outside the hinge block and hinged. The fixed block is sleeved outside the hinge block and hinged. The fixing plate is fixed to the bottom of the fixed block. The door body is arranged at the bottom of the fixing plate.

[0006] The driving component is arranged on one side of the door body and includes a driving part, which includes a connecting shaft, a placing disc, connecting blocks, sliding wheels and supporting plates. The placing disc is sleeved outside the connecting shaft, the connecting shaft is arranged on the inner wall of the placing disc. The number of the connecting blocks is three, and they are all hinged on the inner wall of the placing disc. The number of the sliding wheels is three, and they are all arranged on the inner walls of the connecting blocks. The number of the supporting plates is three, and they are all arranged on the inner walls of the sliding wheels. The sliding wheels slide on the supporting plates.

[0007] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: A support frame is further sleeved outside the pulling rod, a clamping groove is formed on the inner wall of the pulling rod, and a limiting rod is arranged on one side of the clamping groove.

[0008] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: A positioning frame is sleeved outside the limiting rod, a fixing frame is further sleeved outside the limiting rod, and a first spring is further sleeved outside the limiting rod. One end of the first spring is fixed to one end of the fixing frame, and the other end is fixed to one end of the limiting rod.

[0009] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: Second springs are arranged at one ends of the fixing plates, and the other ends of the second springs are fixed to one ends of the support frame.

[0010] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: Driving rods are arranged on one sides of the limiting rods, rollers are arranged at one ends of the driving rods, connecting plates are sleeved outside the rollers, sliding grooves are formed on the inner walls of the connecting plates, the rollers slide on the inner walls of the sliding grooves, and telescopic plates are arranged on one sides of the connecting plates.

[0011] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: An extrusion block is arranged on one side of the placing disc, an extrusion plate is arranged on one side of the extrusion block, and the other end of the extrusion plate is fixed to one side of the telescopic plate.

[0012] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: A positioning disc is arranged on one side of the supporting plate, the positioning disc is sleeved outside the connecting shaft, and a motor is arranged at one end of the positioning disc.

[0013] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: A third spring is further sleeved outside the connecting shaft, and the third spring is fixed to one end of the placing disc.

[0014] As a preferred solution of the crusher for preventing broken pieces from splashing of the present invention, wherein: A protective frame is sleeved outside the placing disc.

[0015] As a preferred embodiment of the crusher for preventing fragmentation and splashing according to the present invention, it further includes a main body assembly, which includes a screening machine, a supporting base, and a conveyor belt. The supporting base is disposed at the bottom of the screening machine, the screening machine is disposed on the top of the supporting base, the conveyor belt is disposed on the top of the supporting base, a door body is disposed on one side of the screening machine, and a telescopic plate is slidably disposed on the inner wall of the supporting base.

[0016] The beneficial effects of the present invention are as follows: When transporting stones, the transportation speed of the conveyor belt can be adjusted according to the size of the stones. Moreover, protective plates are provided on both sides of the conveyor belt, which can protect the stones during transportation to prevent them from splashing. The protective plates on both sides of the conveyor belt can effectively block the splashing stones and prevent them from hitting the operators. Adjusting the transportation speed of the conveyor belt according to the size of the stones can make the stones be transported more smoothly on the conveyor belt, reducing the splashing phenomenon caused by too fast speed. This helps to maintain a stable production process, avoid equipment failures and production interruptions caused by stone splashing, ensure the efficient progress of the ore transportation link, and thus improve the production efficiency of the entire ore mining and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0018] Figure 1 It is the overall structure diagram of the crusher for preventing fragmentation and splashing.

[0019] Figure 2 It is the structure diagram of the telescopic plate of the crusher for preventing fragmentation and splashing.

[0020] Figure 3 It is for the crusher for preventing fragmentation and splashing Figure 2 The partial enlarged structure diagram at position A.

[0021] Figure 4 It is the structure diagram of the hinge block of the crusher for preventing fragmentation and splashing.

[0022] Figure 5 It is the structure diagram of the placement tray of the crusher for preventing fragmentation and splashing.

[0023] Figure 6 It is the structure diagram of the support plate of the crusher for preventing fragmentation and splashing.

[0024] Figure 7 It is the structure diagram of the roller of the crusher for preventing fragmentation and splashing.

[0025] Figure 8 Structural diagram of the extrusion block of a crusher for preventing broken pieces from splashing Specific implementation manners

[0026] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings of the specification

[0027] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments

[0029] Embodiment 1

[0030] Referring to Figures 1-8 , which is the first embodiment of the present invention. This embodiment provides a crusher for preventing broken pieces from splashing. The crusher for preventing broken pieces from splashing includes a main body assembly 100, an opening and closing assembly 200, and a driving assembly 300. The three cooperate to adjust the transportation speed of the conveyor belt according to the size of the stones, preventing the stones from splashing

[0031] The opening and closing assembly 200 includes an opening and closing member 201, which includes a pulling rod 201a, a hinge block 201b, a fixing block 201c, a fixing plate 201d, and a door body 201e. The hinge block 201b is hinged inside the pulling rod 201a, the pulling rod 201a is sleeved outside the hinge block 201b and hinged, the fixing block 201c is sleeved outside the hinge block 201b and hinged, the fixing plate 201d is fixed to the bottom of the fixing block 201c, and the door body 201e is arranged at the bottom of the fixing plate 201d

[0032] When it is necessary to open the door body 201e, by pulling the pulling rod 201a, the movement of the pulling rod 201a drives the movement of the hinge block 201b, the movement of the hinge block 201b drives the movement of the fixing block 201c, the movement of the fixing block 201c drives the movement of the fixing plate 201d, and the movement of the fixing plate 201d can drive the movement of the door body 201e to open the door body 201e

[0033] The driving assembly 300 is disposed on one side of the door body 201e and includes a driving member 301, which includes a connecting shaft 301a, a placing disc 301b, a connecting block 301c, a sliding wheel 301d, and a supporting plate 301e. The placing disc 301b is disposed on one side of the connecting shaft 301a, and the connecting shaft 301a is disposed on one side of the placing disc 301b. The number of connecting blocks 301c is three, all of which are hinged to the inner wall of the placing disc 301b. The number of sliding wheels 301d is three, all of which are disposed on the inner wall of the connecting block 301c. The number of supporting plates 301e is three, all of which are disposed on the inner wall of the sliding wheel 301d. The sliding wheel 301d slides on the supporting plate 301e.

[0034] A rotating shaft is inserted into the inner wall of the placing disc 301b, and the other end of the rotating shaft is inserted into the inner wall of the conveyor belt 103.

[0035] As the door body 201e opens, the transmission speed of the conveyor belt 103 will also slow down. The rotation of the connecting shaft 301a drives the positioning disc 302c to rotate. The rotation of the positioning disc 302c drives the supporting plate 301e to rotate. The rotation of the supporting plate 301e drives the sliding wheel 301d to rotate, so that the sliding wheel 301d moves to the top of the supporting plate 301e. The movement of the sliding wheel 301d drives the connecting block 301c to move. The movement of the connecting block 301c drives the placing disc 301b to rotate. The rotation of the placing disc 301b drives the rotating shaft to rotate, and the rotating shaft drives the conveyor belt 103 to move. When the sliding wheel 301d moves to the top of the supporting plate 301e, the speed of the conveyor belt 103 will increase. When the speed of the conveyor belt 103 needs to be gentle, by squeezing the placing disc 301b, the movement of the placing disc 301b drives the connecting block 301c to move. The movement of the connecting block 301c drives the sliding wheel 301d to slide on the supporting plate 301e. When the sliding wheel 301d slides to the bottom of the supporting plate 301e, the conveying speed of the conveyor belt 103 will be gentle.

[0036] Embodiment 2

[0037] Refer to Figures 1-8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0038] Specifically, a support frame 202a is further sleeved on the outer side of the pulling rod 201a. A clamping groove 201a-1 is formed in the inner wall of the pulling rod 201a, and a limiting rod 202b is disposed on one side of the clamping groove 201a-1.

[0039] The support frame 202a is used to support the pulling rod 201a.

[0040] When it is necessary to open the door body 201e, it is necessary to release the limit first. By pulling the limit rod 202b, the limit rod 202b is separated from the card slot 201a-1, and then the pull rod 201a is pulled to open the door body 201e. After opening to the required position, by releasing the limit rod 202b, the limit rod 202b is re-engaged with the card slot 201a-1, thereby completing the limit of the door body 201e.

[0041] Specifically, a positioning frame 202c is sleeved outside the limit rod 202b, a fixing frame 202d is also sleeved outside the limit rod 202b, and a first spring 202e is also sleeved outside the limit rod 202b. One end of the first spring 202e is fixed to one end of the fixing frame 202d, and the other end is fixed to one end of the limit rod 202b.

[0042] The positioning frame 202c is fixed to one end of the support frame 202a, and an extrusion disc is sleeved outside the limit rod 202b.

[0043] The positioning frame 202c is used to support the limit rod 202b, and the fixing frame 202d is used to support the first spring 202e. By pulling the limit rod 202b, the movement of the limit rod 202b drives the extrusion disc to squeeze the first spring 202e. Then, after adjusting the opening and closing degree of the door body 201e, the limit rod 202b is released, and through the elastic force of the first spring 202e rebounding, the limit rod 202b is re-engaged with the next card slot 201a-1 of the pull rod 201a, thereby completing the limit of the door body 201e.

[0044] Specifically, a second spring 202f is provided at one end of the fixing plate 201d, and the other end of the second spring 202f is fixed to one end of the support frame 202a.

[0045] By pulling the pull rod 201a, the movement of the pull rod 201a drives the hinge block 201b to move, the movement of the hinge block 201b drives the fixed block 201c to move, and the movement of the fixed block 201c can drive the door body 201e to move. The movement of the fixing plate 201d will squeeze the second spring 202f, and then the door body 201e is opened. When closing the door body 201e, through the elastic force of the second spring 202f rebounding, the door body 201e can return to its original position.

[0046] Specifically, a drive rod 202g is provided on one side of the limit rod 202b, a roller 202h is provided at one end of the drive rod 202g, a connecting plate 202i is sleeved outside the roller 202h, a chute 202i-1 is opened on the inner wall of the connecting plate 202i, and the roller 202h is located on the inner wall of the chute 202i-1 and slides, and a telescopic plate 202j is provided on one side of the connecting plate 202i.

[0047] By pulling the pull rod 201a, the movement of the pull rod 201a will also drive the movement of the drive rod 202g. The movement of the drive rod 202g drives the roller 202h to slide on the inner wall of the chute 202i-1. The movement of the roller 202h will squeeze the connecting plate 202i, causing the connecting plate 202i to rise. The movement of the connecting plate 202i will drive the telescopic plate 202j to rise. By the movement of the telescopic plate 202j, the splashing of the crushed material can be prevented.

[0048] Specifically, an extrusion block 302a is provided on one side of the placement plate 301b. An extrusion plate 302b is provided on one side of the extrusion block 302a. The other end of the extrusion plate 302b is fixed to one side of the telescopic plate 202j.

[0049] A positioning disk is provided at one end of the extrusion block 302a. The positioning disk is rotatably connected to the placement plate 301b through a bearing.

[0050] The movement of the telescopic plate 202j drives the movement of the extrusion plate 302b. The movement of the extrusion plate 302b squeezes the extrusion block 302a. The movement of the extrusion block 302a drives the movement of the placement plate 301b. By the movement of the placement plate 301b, the speed of the conveyor belt 103 can be reduced.

[0051] Embodiment 3

[0052] Refer to Figures 7-8 , which is the third embodiment of the present invention. This embodiment is based on the first two embodiments.

[0053] Specifically, a positioning disk 302c is provided on one side of the support plate 301e. The positioning disk 302c is sleeved outside the connecting shaft 301a. A motor 302d is provided at one end of the positioning disk 302c.

[0054] The power of the motor 302d drives the rotation of the connecting shaft 301a. The connecting shaft 301a drives the rotation of the positioning disk 302c.

[0055] Specifically, a third spring 302e is also sleeved outside the connecting shaft 301a. The third spring 302e is fixed to one end of the placement plate 301b.

[0056] The other end of the third spring 302e is fixed to one side of the support base 102.

[0057] The movement of the extrusion plate 302b squeezes the extrusion block 302a. The movement of the extrusion block 302a drives the movement of the placement plate 301b. The movement of the placement plate 301b pulls the third spring 302e. When the rotation speed of the placement plate 301b is too fast, the third spring 302e will be pulled.

[0058] Specifically, a protective frame 302f is sleeved outside the placement plate 301b.

[0059] The protective frame 302f is fixed to one side of the support base 102, and the protective frame 302f is used to protect the placement tray 301b.

[0060] Specifically, it further includes a main body component 100, which includes a screening machine 101, a support base 102, and a conveyor belt 103. The support base 102 is arranged at the bottom of the screening machine 101, the screening machine 101 is arranged on top of the support base 102, the conveyor belt 103 is arranged on top of the support base 102, the door body 201e is arranged on one side of the screening machine 101, and the telescopic plate 202j slides on the inner wall of the support base 102.

[0061] A screen is provided on the screening machine 101.

[0062] The screening machine 101 is a device used to separate solid materials according to particle size. When the materials are placed on the screen, through movement methods such as vibration, shaking, or rotation, the materials with smaller particles can fall through the mesh holes of the screen, while the materials with larger particles remain on the screen, thereby achieving the purpose of separating materials with different particle sizes. One of the main functions of the support base 102 is to disperse the pressure generated by the weight of the materials carried by the conveyor belt 103, and it can provide a stable support force to keep the conveyor belt 103 at a certain height and shape, ensuring that the materials can be transported smoothly on the conveyor belt. The conveyor belt 103 is used to transport the processed materials from one location to another.

[0063] When in use, it is necessary to open the door body 201e. First, release the limit of the door body 201e. By pulling the limit rod 202b, the movement of the limit rod 202b drives the extrusion disc to squeeze the first spring 202e. The movement of the limit rod 202b causes it to separate from the card slot 201a-1. Then, pull the pull rod 201a. The movement of the pull rod 201a drives the movement of the hinge block 201b. The movement of the hinge block 201b drives the movement of the fixed block 201c. The movement of the fixed block 201c drives the movement of the fixed plate 201d. The movement of the fixed plate 201d will squeeze the second spring 202f. By moving the fixed plate 201d, the door body 201e can be opened. When pulling the pull rod 201a, it will also drive the movement of the drive rod 202g. The movement of the drive rod 202g drives the roller 202h to slide on the inner wall of the chute 202i-1. The movement of the roller 202h will squeeze the connecting plate 202i, causing the connecting plate 202i to rise. The movement of the connecting plate 202i will drive the telescopic plate 202j to rise. By moving the telescopic plate 202j, the splashing of broken materials can be prevented. After opening the door body 201e to the required opening size, then release the limit rod 202b, so that the limit rod 202b engages with the next card slot 201a-1 of the pull rod 201a, thus completing the limit of the door body 201e. When the telescopic plate 202j rises, it will drive the movement of the extrusion plate 302b. The movement of the extrusion plate 302b squeezes the extrusion block 302a. The movement of the extrusion block 302a drives the movement of the placement plate 301b. Then start the motor 302d. The rotation of the motor 302d drives the rotation of the connecting shaft 301a. The rotation of the connecting shaft 301a drives the rotation of the positioning disc 302c. The rotation of the positioning disc 302c drives the rotation of the support plate 301e. The rotation of the support plate 301e drives the rotation of the sliding wheel 301d. The movement of the sliding wheel 301d drives the movement of the connecting block 301c. The movement of the connecting block 301c drives the rotation of the placement plate 301b. The rotation of the placement plate 301b drives the rotation of the rotating shaft. The rotation of the rotating shaft can drive the movement of the conveyor belt 103. By squeezing the placement plate 301b, the sliding wheel 301d will slide to the bottom of the support plate 301e. At this time, the conveyor belt 103 will reduce its speed. After the work is completed and the door body 201e is closed, the door body 201e can cause the telescopic plate 202j to descend. The telescopic plate 202j separates the extrusion plate 302b from the extrusion block 302a. At this time, through the rebound of the third spring 302e, the placement plate 301b can return to its original position.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A crusher that prevents fragmentation and splashing, characterized in that: including a opening and closing assembly (200), comprising an opening and closing member (201), which includes a pulling rod (201a), a hinge block (201b), a fixing block (201c), a fixing plate (201d) and a door body (201e), wherein the hinge block (201b) is hinged to the inner wall of the pulling rod (201a), the pulling rod (201a) is sleeved outside the hinge block (201b) and hinged thereto, the fixing block (201c) is sleeved outside the hinge block (201b) and hinged thereto, the fixing plate (201d) is fixed to the bottom of the fixing block (201c), and the door body (201e) is arranged at the bottom of the fixing plate (201d); a driving assembly (300), arranged on one side of the door body (201e), comprising a driving member (301), which includes a connecting shaft (301a), a placing disc (301b), a connecting block (301c), a sliding wheel (301d) and a supporting plate (301e), wherein the placing disc (301b) is sleeved outside the connecting shaft (301a), the connecting shaft (301a) is arranged on the inner wall of the placing disc (301b), the number of the connecting blocks (301c) is three, and all of them are hinged to the inner wall of the placing disc (301b), the number of the sliding wheels (301d) is three, and all of them are arranged on the inner wall of the connecting block (301c), the number of the supporting plates (301e) is three, and all of them are arranged on the inner wall of the sliding wheel (301d), and the sliding wheel (301d) slides on the supporting plate (301e).

2. The crusher for preventing fragmentation and splashing according to claim 1, characterized in that: A support frame (202a) is further sleeved outside the pulling rod (201a), a clamping groove (201a-1) is formed in the inner wall of the pulling rod (201a), and a limiting rod (202b) is arranged on one side of the clamping groove (201a-1).

3. The crusher for preventing fragmentation and splashing according to claim 2, wherein: A positioning frame (202c) is sleeved outside the limiting rod (202b), a fixing frame (202d) is further sleeved outside the limiting rod (202b), a first spring (202e) is further sleeved outside the limiting rod (202b), one end of the first spring (202e) is fixed to one end of the fixing frame (202d), and the other end is fixed to one end of the limiting rod (202b).

4. The crusher for preventing fragmentation and splashing according to claim 3, wherein: A second spring (202f) is arranged at one end of each of the fixing plates (201d), and the other end of the second spring (202f) is fixed to one end of the support frame (202a).

5. The crusher for preventing fragmentation and splashing according to claim 4, wherein: A driving rod (202g) is arranged on one side of each of the limiting rods (202b), a roller (202h) is arranged at one end of each of the driving rods (202g), a connecting plate (202i) is sleeved outside each of the rollers (202h), a sliding groove (202i-1) is formed in the inner wall of the connecting plate (202i), the roller (202h) slides in the inner wall of the sliding groove (202i-1), and a telescopic plate (202j) is arranged on one side of each of the connecting plates (202i).

6. The crusher for preventing fragmentation and splashing according to claim 5, characterized in that: On one side of the placing tray (301b), there is a pressing block (302a). On one side of the pressing block (302a), there is a pressing plate (302b). The other end of the pressing plate (302b) is fixed to one side of the telescopic plate (202j).

7. The crusher for preventing fragmentation and splashing according to claim 6, characterized in that: On one side of the support plate (301e), there is a positioning disc (302c). The positioning disc (302c) is sleeved on the outer side of the connecting shaft (301a). One end of the positioning disc (302c) is provided with a motor (302d).

8. The crusher for preventing fragmentation and splashing according to claim 7, wherein: The outer side of the connecting shaft (301a) is also sleeved with a third spring (302e). The third spring (302e) is fixed to one end of the placing tray (301b).

9. The crusher for preventing fragmentation and splashing according to claim 8, wherein: The outer side of the placing tray (301b) is sleeved with a protective frame (302f).

10. The crusher for preventing fragmentation and splashing according to claim 9, characterized in that: It further includes a main body assembly (100), which includes a screening machine (101), a support base (102), and a conveyor belt (103). The support base (102) is arranged at the bottom of the screening machine (101). The screening machine (101) is arranged on the top of the support base (102). The conveyor belt (103) is arranged on the top of the support base (102). The door body (201e) is arranged on one side of the screening machine (101). The telescopic plate (202j) slides on the inner wall of the support base (102).

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