Flying-dust-proof high-quality aggregate crushing device

By designing dustproof components and reciprocating components in the aggregate crushing device, the problem of dust and debris splashing during the aggregate crushing process is solved, and effective dustproof and improvement of crushing efficiency is achieved.

CN222428086UActive Publication Date: 2025-02-07ANHUI YAJIU ENVIRONMENTAL PROTECTION BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202420915783.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-29
Publication Date
2025-02-07
Estimated Expiration
2034-04-29

AI Technical Summary

Technical Problem

The prior art cannot effectively prevent dust and debris from splashing during the crushing process of aggregate, resulting in the inability to effectively prevent dust.

Method used

A fine aggregate crushing device for dust-proofing is designed, by setting up dust-proof components and reciprocating components. The dustproof assembly includes a rotating shaft, a baffle, a connecting shaft, a movable rod and a rotating shaft. Through the rotation and movement of these components, the baffle can effectively block the splash of dust and debris. The reciprocating assembly drives the movement of the rotating rod, rotating wheel and clamp by driving the motor, so that the filter can be reciprocated left and right, thereby screening the broken aggregate.

Benefits of technology

It effectively prevents dust and debris from splashing when the aggregate is crushed, improves the crushing efficiency, and improves the quality of the aggregate through the screening function.

✦ Generated by Eureka AI based on patent content.

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Abstract

The fine aggregate crushing device comprises a box body, a supporting plate and a collecting box, the surface of the side, close to the bottom, of the box body is fixedly connected with the supporting plate, and the box body is in sliding connection with the collecting box; a feeding port is formed in the surface of the other side, close to the top, of the box body, a servo motor is fixedly connected to the surface of the top of the supporting plate, an inclined plate is fixedly installed in the box body, and a reciprocating assembly is arranged on the surface of the side, penetrating through the box body, of the output end of the servo motor; a dustproof assembly is arranged in the box body; wherein the dustproof assembly comprises a rotating shaft rotationally connected with the box body, dust generated when aggregate is crushed is shielded by arranging the dustproof assembly, and meanwhile, a filter screen is driven to reciprocate by arranging a reciprocating assembly, so that the crushed aggregate can be screened by the filter screen; therefore, the crushing efficiency of the aggregate can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of crushing devices, in particular to a fine aggregate crushing device which can prevent dust. Background Art

[0002] Aggregate, also known as "aggregate", is a granular material that acts as a skeleton and filler in concrete and mortar. These aggregates are often irregular in shape. If they are directly bagged, it will take up a lot of space and will scratch the bag surface, causing waste to fall. Therefore, a crushing device is needed to break the aggregate into small pieces before loading.

[0003] Publication No. CN213726947U discloses a crushing device with a dust-proof structure. The water in the water tank is pumped into the water pipe through a water delivery pump and sprayed out at an atomizing nozzle, which is conducive to wetting the construction waste, thereby preventing dust from being raised when the construction waste is crushed. The water will wet the surface of the first crushing blade shaft after being sprayed out in an atomized form, thereby reducing the heat generated by friction between the first crushing blade shaft and the construction waste, and preventing the first crushing blade shaft from being softened by long-term heat. The water pipe passes through the first crushing blade shaft, thereby absorbing heat inside and outside the first crushing blade shaft at the same time, which is conducive to strengthening cooling. However, the patent still has the following problems in actual use:

[0004] The water in the water tank is pumped into the water pipe through a water delivery pump and sprayed out at the atomizing nozzle, which is helpful to wet the construction waste, thereby preventing dust from being raised when the construction waste is crushed. However, when the aggregate is crushed, the aggregate moves downward from the top of the crushing roller. In the process from top to bottom, the aggregate will be splashed and dust will be splashed, so that the debris or dust will go out through the feed port, and it is not very effective to play the role of dust prevention.

[0005] A fine aggregate crushing device with dust prevention is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a fine aggregate crushing device with dust prevention, so as to solve the problem proposed in the above background technology that the water in the water storage tank is currently pumped into the water pipe by a conveying water pump and sprayed out at the atomizing nozzle, which is conducive to wetting the construction waste, thereby preventing the construction waste from raising dust when the construction waste is crushed. However, when the aggregate is crushed, the aggregate moves downward from the top of the crushing roller. In the process from top to bottom, the aggregate will be splashed and dust will be splashed, so that the debris or dust will go out through the feed port, thereby failing to effectively play the role of dust prevention.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a dust-proof fine aggregate crushing device, comprising a box body, a support plate and a collection box, wherein a side surface of the box body close to the bottom is fixedly connected to the support plate, and the box body is slidably connected to the collection box;

[0008] A feed port is provided on the other side surface of the box body near the top, a servo motor is fixedly connected to the top surface of the support plate, an inclined plate is fixedly installed inside the box body, and a reciprocating assembly is provided on the side surface of the box body through which the output end of the servo motor passes;

[0009] Also includes:

[0010] A dustproof component is arranged inside the box;

[0011] The dustproof component includes a rotating shaft rotatably connected to the box body, a baffle is fixedly connected to the bottom surface of the rotating shaft, and a connecting shaft is fixedly connected to a side surface of the baffle close to the bottom;

[0012] Wherein, a side surface of the connecting shaft away from the baffle is rotatably connected to a movable rod, and a side surface of the movable rod away from the connecting shaft is rotatably connected to a rotating shaft.

[0013] Preferably, a sliding block is fixedly connected to a surface of a side of the rotating shaft away from the movable rod, a connecting plate is fixedly connected to one side of the top surface of the box body, a sliding bar is penetrated and connected to a surface of the connecting plate close to the top, a first spring is sleeved on the surface of the sliding bar, one side surface of the first spring is fixedly connected to the box body, the other side surface of the first spring is fixedly connected to the connecting plate, a sliding groove is provided on a surface of the connecting plate away from the first spring, the sliding groove is slidably connected to the sliding block, a second spring is fixedly installed inside the sliding groove, and a bottom surface of the second spring is fixedly connected to the sliding block.

[0014] Preferably, a moving groove is provided in the middle of the bottom surface of the box body.

[0015] Preferably, the reciprocating component includes a rotating rod fixedly connected to the driving motor, limiting sleeves are slidably connected to both sides of the surface of the rotating rod, a rotating wheel is fixedly installed in the middle of the surface of the rotating rod, a sliding groove is opened in the middle of the surface of the rotating wheel, and a card block is slidably connected inside the sliding groove.

[0016] Preferably, a protective box is fixedly connected to the back surface of the box body, a stabilizing plate is fixedly connected to one side of the top surface of the protective box, a driving motor is fixedly connected to the surface of the stabilizing plate, an output end of the driving motor passes through one side surface of the protective box and is fixedly connected to a main gear, a first rotating rod is connected through the middle of the interior of the main gear, a crushing roller is fixedly connected to the surface of the first rotating rod, the bottom surface of the first rotating rod is rotatably connected to the box body, a slave gear is meshingly connected to one side surface of the main gear, a second rotating rod is connected through the middle of the interior of the slave gear, the second rotating rod is fixedly connected to the crushing roller, the top surface of the second rotating rod is rotatably connected to the protective box, and the bottom surface of the second rotating rod is rotatably connected to the box body.

[0017] Preferably, locking blocks are symmetrically installed on both sides near the bottom end of the box body, and a third spring is symmetrically installed on the surface of the locking block away from the box body. A filter screen is fit-connected to the surface of the third spring away from the locking block, and a blocking plate is fixedly connected to one side of the top surface of the filter screen. Limiting grooves are symmetrically provided on both sides of the filter screen, and the limiting grooves are locked and connected with the locking blocks. The limiting grooves are fit-connected to the third spring, and one side of the top surface of the filter screen is fixedly connected to the locking block.

[0018] Preferably, a limit box is fixedly installed on one side of the interior of the box body, the bottom surface of the limit box is connected with the card block, the limit box is fixedly connected with the limit sleeve, and a sliding block is fixedly connected in the middle of the bottom surface of the collection box, and the sliding block is slidably connected with the movable groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the dust-proof fine aggregate crushing device, by setting a dust-proof component, can shield the dust generated when the aggregate is crushed, and by setting a reciprocating component, can drive the filter screen to reciprocate, so that the filter screen can screen the crushed aggregate, thereby improving the crushing efficiency of the aggregate, and its specific contents are as follows:

[0020] 1. By setting a dustproof component, when the aggregate is pushed into the box through the feed port, the baffle plate will be lifted up, so that the baffle plate rotates with the rotating shaft as the center point. At the same time, when the baffle plate rotates, the connecting shaft will be driven to rotate, and the rotation of the connecting shaft will drive the movement of the movable rod. The movement of the movable rod will push the rotating shaft, so that the rotating shaft moves. At the same time, when the rotating shaft moves, it will drive the connecting plate to slide on the sliding rod. At the same time, after the aggregate is completely entered into the box, the first spring will squeeze the connecting plate, so that the connecting plate returns to its original position. As the connecting plate returns to its original position, the baffle plate can be driven to return to its original position, so that the baffle plate can fit with the box, thereby achieving the dustproof effect;

[0021] 2. By setting up a reciprocating component and starting the driving motor, the rotating rod can be driven to rotate, thereby driving the rotating wheel to rotate. Through the rotation of the rotating wheel, the irregular sliding groove on the rotating wheel drives the movement of the card block. At the same time, the bottom of the card block is fixedly connected to the filter net, so that the movement of the card block can drive the movement of the filter net, thereby realizing the left and right reciprocating motion of the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall operation structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the top view structure of the crushing roller in the utility model;

[0025] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0026] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure of area B in the middle.

[0027] In the figure: 1, box body; 2, feed port; 3, support plate; 4, servo motor; 5, dustproof component; 501, rotating shaft; 502, baffle; 503, connecting shaft; 504, movable rod; 505, rotating shaft; 506, slider; 507, connecting plate; 508, slide bar; 509, first spring; 510, slide groove; 511, second spring; 6, inclined plate; 7, moving groove; 8, collection box; 9, reciprocating component; 901 , rotating rod; 902, limiting sleeve; 903, rotating wheel; 904, sliding groove; 905, clamping block; 10, protective box; 11, stabilizing plate; 12, driving motor; 13, main gear; 14, first rotating rod; 15, crushing roller; 16, slave gear; 17, second rotating rod; 18, locking block; 19, third spring; 20, filter screen; 21, blocking plate; 22, limiting groove; 23, limiting box; 24, sliding block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a fine aggregate crushing device for preventing dust, comprising a box body 1, a support plate 3 and a collecting box 8, wherein a side surface of the box body 1 close to the bottom is fixedly connected to the support plate 3, and the box body 1 is slidably connected to the collecting box 8; a feed port 2 is provided on the other side surface of the box body 1 close to the top, a servo motor 4 is fixedly connected to the top surface of the support plate 3, an inclined plate 6 is fixedly installed inside the box body 1, and a reciprocating component 9 is arranged on the output end of the servo motor 4 passing through a side surface of the box body 1; further comprising: a dustproof component 5 is arranged inside the box body 1; wherein the dustproof component 5 comprises a rotating shaft 501 rotatably connected to the box body 1, a baffle 502 is fixedly connected to the bottom surface of the rotating shaft 501, and a connecting shaft 503 is fixedly connected to the side surface of the baffle 502 close to the bottom; wherein a movable rod 504 is rotatably connected to a side surface of the connecting shaft 503 away from the baffle 502, and a rotating shaft 505 is rotatably connected to a side surface of the movable rod 504 away from the connecting shaft 503, such as Figure 1 , 2 As shown, by providing the dustproof component 5, the dust and splashed debris generated when the aggregate is crushed can be shielded, thereby achieving a dustproof effect.

[0030] A sliding block 506 is fixedly connected to the surface of the rotating shaft 505 on one side away from the movable rod 504, a connecting plate 507 is fixedly connected to one side of the top surface of the box body 1, a sliding bar 508 is penetrated and connected to the surface of the connecting plate 507 close to the top, a first spring 509 is sleeved on the surface of the sliding bar 508, one side surface of the first spring 509 is fixedly connected to the box body 1, the other side surface of the first spring 509 is fixedly connected to the connecting plate 507, a sliding groove 510 is provided on the surface of the connecting plate 507 on one side away from the first spring 509, the sliding groove 510 is slidably connected to the sliding block 506, a second spring 511 is fixedly installed inside the sliding groove 510, and the bottom surface of the second spring 511 is fixedly connected to the sliding block 506, as shown in FIG. Figure 2 As shown, the baffle 502 rotates with the rotating shaft 501 as the center point, and the first spring 509, through the action of the sliding rod 508, ensures that when the first spring 509 returns to its original position, the swing amplitude will not be too large. At the same time, when the rotating shaft 505 returns to its original position, the second spring 511 will limit the rotating shaft 505, so that the baffle 502 will not fall due to gravity inertia when not pushed by external force, so that the baffle 502 is always tightly fitted with the box body 1.

[0031] A moving groove 7 is provided in the middle of the bottom surface of the box body 1, and the reciprocating assembly 9 includes a rotating rod 901 fixedly connected to the driving motor 12, and the surface of the rotating rod 901 is slidably connected to the limiting sleeves 902 on both sides, and a rotating wheel 903 is fixedly installed in the middle of the surface of the rotating rod 901, and a sliding groove 904 is provided in the middle of the surface of the rotating wheel 903, and a block 905 is slidably connected inside the sliding groove 904, such as Figure 5 As shown, by starting the drive motor 12, the drive motor 12 can drive the rotation of the rotating rod 901, and through the rotation of the rotating rod 901, the rotating wheel 903 can be driven to rotate, and through the rotation of the rotating wheel 903, the irregular sliding groove 904 on the rotating wheel 903 drives the movement of the block 905, and at the same time, the bottom of the block 905 is fixedly connected to the filter screen 20, so that the movement of the block 905 can drive the movement of the filter screen 20, thereby realizing the left and right reciprocating motion of the filter screen 20.

[0032] A protective box 10 is fixedly connected to the back surface of the box body 1, a stabilizing plate 11 is fixedly connected to one side of the top surface of the protective box 10, a driving motor 12 is fixedly connected to the surface of the stabilizing plate 11, an output end of the driving motor 12 passes through one side surface of the protective box 10 and is fixedly connected to a main gear 13, a first rotating rod 14 is connected through the inner middle of the main gear 13, a crushing roller 15 is fixedly connected to the surface of the first rotating rod 14, a bottom surface of the first rotating rod 14 is rotatably connected to the box body 1, a slave gear 16 is meshingly connected to one side surface of the main gear 13, a second rotating rod 17 is connected through the inner middle of the slave gear 16, the second rotating rod 17 is fixedly connected to the crushing roller 15, a top surface of the second rotating rod 17 is rotatably connected to the protective box 10, and a bottom surface of the second rotating rod 17 is rotatably connected to the box body 1, as shown in FIG. Figure 3 As shown, through the meshing between the main gear 13 and the slave gear 16, the two crushing rollers 15 rotate in opposite directions, so that the aggregate can be crushed.

[0033] The inside of the box body 1 is symmetrically provided with snap-fit ​​blocks 18 on both sides near the bottom, and a third spring 19 is symmetrically provided with a surface of the snap-fit ​​block 18 away from the box body 1, and a filter screen 20 is fitted and connected to the surface of the third spring 19 away from the snap-fit ​​block 18, and a blocking plate 21 is fixedly connected to one side of the top surface of the filter screen 20, and limiting grooves 22 are symmetrically provided on both sides of the filter screen 20, and the limiting grooves 22 are snap-fitted and connected with the snap-fit ​​block 18, and the limiting grooves 22 are fitted and connected with the third spring 19, and one side of the top surface of the filter screen 20 is fixedly connected with the snap-fit ​​block 905, as shown in FIG. Figure 4As shown, through the action of the third spring 19, the filter screen 20 plays a protective role when it rebounds in reciprocating motion. At the same time, the baffle plate 21 is long and the distance between it and the crushing roller 15 is close, so that the crushed aggregate can fall directly on the filter screen 20 without causing the aggregate to fall from the side. At the same time, both sides of the filter screen 20 are tightly connected to the box.

[0034] A limit box 23 is fixedly installed on one side of the inner part of the box body 1, and the bottom surface of the limit box 23 is connected with the clamping block 905 through and through, and the limit box 23 is fixedly connected with the limit sleeve 902. A sliding block 24 is fixedly connected in the middle of the bottom surface of the collection box 8, and the sliding block 24 is slidably connected with the moving groove 7, such as Figure 2 As shown, the top of the limit box 23 is an inclined surface, so that aggregates will not accumulate above the limit box 23. The limit box 23 can protect the reciprocating assembly 9.

[0035] Working principle: Before using this dust-proof fine aggregate crushing device, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 5 As shown, firstly, by setting the dustproof component 5, when the aggregate is pushed into the box body 1 through the feed port 2, the baffle 502 will be lifted up, so that the baffle 502 rotates with the rotating shaft 501 as the center point, and when the baffle 502 rotates, the connecting shaft 503 will be driven to rotate, and the rotation of the connecting shaft 503 will drive the movement of the movable rod 504, and the movement of the movable rod 504 will push the rotating shaft 505, so that the rotating shaft 505 moves, and when the rotating shaft 505 moves, it will drive the connecting plate 507 to slide on the sliding rod 508, and then After the aggregate completely enters the box body 1, the first spring 509 squeezes the connecting plate 507, so that the connecting plate 507 returns to its original position. As the connecting plate 507 returns to its original position, the baffle 502 can be driven to return to its original position, so that the baffle 502 can fit with the box body 1, thereby achieving a dust-proof effect. At the same time, when the rotating shaft 505 returns to its original position, the second spring 511 limits the rotating shaft 505, so that the baffle 502 will not fall due to gravity inertia when not pushed by external force, so that the baffle 502 is always tightly fitted with the box body 1.

[0036] Secondly, by setting the reciprocating component 9 and starting the driving motor 12, the driving motor 12 can drive the rotation of the rotating rod 901, and the rotation of the rotating rod 901 can drive the rotation of the rotating wheel 903, and the rotation of the rotating wheel 903 makes the irregular sliding groove 904 on the rotating wheel 903 drive the movement of the block 905, and at the same time, the bottom of the block 905 is fixedly connected to the filter screen 20, so that the movement of the block 905 can drive the movement of the filter screen 20, so that the left and right reciprocating motion of the filter screen 20 can be realized, so that the crushed and incompletely crushed aggregates can be separated, so that it is convenient for the subsequent staff to take out the incompletely crushed aggregates and perform secondary crushing, so that the crushing efficiency of the aggregates can be improved.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust-proof fine aggregate crushing device, comprising a box body (1), a support plate (3) and a collection box (8), wherein a side surface of the box body (1) close to the bottom is fixedly connected to the support plate (3), and the box body (1) is slidably connected to the collection box (8); The other side surface of the box body (1) close to the top is provided with a feed port (2); the top surface of the support plate (3) is fixedly connected to a servo motor (4); an inclined plate (6) is fixedly installed inside the box body (1); and a reciprocating assembly (9) is provided on one side surface of the box body (1) through which the output end of the servo motor (4) passes; It is characterized in that Also includes: A dustproof component (5) is arranged inside the box (1); The dustproof component (5) comprises a rotating shaft (501) rotatably connected to the housing (1); a baffle (502) is fixedly connected to the bottom surface of the rotating shaft (501); and a connecting shaft (503) is fixedly connected to a side surface of the baffle (502) close to the bottom. A movable rod (504) is rotatably connected to a surface of one side of the connecting shaft (503) away from the baffle (502), and a rotating shaft (505) is rotatably connected to a surface of one side of the movable rod (504) away from the connecting shaft (503).

2. The dust-proof fine aggregate crushing device according to claim 1 is characterized by: A sliding block (506) is fixedly connected to a surface of a side of the rotating shaft (505) away from the movable rod (504); a connecting plate (507) is fixedly connected to a side of the top surface of the box body (1); a sliding bar (508) is penetrated and connected to a surface of a side of the connecting plate (507) close to the top; a first spring (509) is sleeved on the surface of the sliding bar (508); a surface of a side of the first spring (509) is fixedly connected to the box body (1); a surface of the other side of the first spring (509) is fixedly connected to the connecting plate (507); a sliding groove (510) is provided on a surface of a side of the connecting plate (507) away from the first spring (509); the sliding groove (510) is slidably connected to the sliding block (506); a second spring (511) is fixedly installed inside the sliding groove (510); a bottom surface of the second spring (511) is fixedly connected to the sliding block (506).

3. The dust-proof fine aggregate crushing device according to claim 1 is characterized by: A moving groove (7) is provided in the middle of the bottom surface of the box body (1).

4. The dust-proof fine aggregate crushing device according to claim 1 is characterized in that: The reciprocating assembly (9) comprises a rotating rod (901) fixedly connected to the driving motor (12), the surface of the rotating rod (901) is slidably connected to limiting sleeves (902) on both sides, a rotating wheel (903) is fixedly installed in the middle of the surface of the rotating rod (901), a sliding groove (904) is provided in the middle of the surface of the rotating wheel (903), and a clamping block (905) is slidably connected inside the sliding groove (904).

5. The dust-proof fine aggregate crushing device according to claim 1 is characterized by: The back surface of the box body (1) is fixedly connected to a protective box (10), and one side of the top surface of the protective box (10) is fixedly connected to a stabilizing plate (11), and the surface of the stabilizing plate (11) is fixedly connected to a driving motor (12), and the output end of the driving motor (12) passes through a side surface of the protective box (10) and is fixedly connected to a main gear (13), and a first rotating rod (14) is connected through the middle of the interior of the main gear (13), and a crushing roller (15) is fixedly connected to the surface of the first rotating rod (14), and the bottom surface of the first rotating rod (14) is rotatably connected to the box body (1), and a side surface of the main gear (13) is meshingly connected to a slave gear (16), and a second rotating rod (17) is connected through the middle of the interior of the slave gear (16), and the second rotating rod (17) is fixedly connected to the crushing roller (15), and the top surface of the second rotating rod (17) is rotatably connected to the protective box (10), and the bottom surface of the second rotating rod (17) is rotatably connected to the box body (1).

6. The dust-proof fine aggregate crushing device according to claim 1 is characterized by: The box body (1) is symmetrically provided with locking blocks (18) on both sides near the bottom end, and the locking blocks (18) are symmetrically provided with a third spring (19) on a side surface away from the box body (1). The side surface of the third spring (19) away from the locking blocks (18) is fitted with a filter screen (20), and a blocking plate (21) is fixedly connected to one side of the top surface of the filter screen (20). The filter screen (20) is symmetrically provided with limiting grooves (22) on both sides, and the limiting grooves (22) are locked with the locking blocks (18). The limiting grooves (22) are fitted with the third spring (19), and one side of the top surface of the filter screen (20) is fixedly connected to the locking block (905).

7. The dust-proof fine aggregate crushing device according to claim 1 is characterized by: A limit box (23) is fixedly installed on one side of the interior of the box body (1); the bottom surface of the limit box (23) is connected to a clamping block (905) through the bottom surface; the limit box (23) is fixedly connected to a limit sleeve (902); a sliding block (24) is fixedly connected to the middle of the bottom surface of the collection box (8); and the sliding block (24) is slidably connected to the movable groove (7).

Citation Information

Patent Citations

  • Crushing device with dust raising prevention structure

    CN213726947U