Crushing grid

Abstract

The utility model discloses a crushing grid, which relates to the technical field of sewage treatment and is characterized in that a support is arranged above a base, a top seat is arranged on the base through the support, a driving crushing roller and a driven crushing roller which rotate oppositely and are used for crushing foreign matters are symmetrically arranged in the base, and a driving motor is arranged above the top seat. A planetary gear set used for driving the driving crushing roller and the driven crushing roller to rotate is arranged in the top base, the power output end of the driving motor is fixedly connected with the planetary gear set, two sets of rotary drums are further symmetrically arranged on the base, and the rotary drums are used for driving foreign matter to move to the position between the driving crushing roller and the driven crushing roller to be crushed. The rotary drum is further provided with a cleaning assembly used for cleaning foreign matter and chippings between the driving crushing roller and the driven crushing roller, and the base is further provided with an opening and closing plate for opening and closing, so that the garbage and chippings in tooth gaps cannot stay on the crushing rollers for too much time, the service life of the crushing rollers is prolonged, and the crushing efficiency of continuous garbage crushing is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a comminutor bar. Background Technology

[0002] The shredder is a type of underground sewage removal equipment introduced from abroad and used in municipal, water conservancy, and pumping station systems. This equipment can shred debris such as wood chips, empty bottles, and cloth pieces in the sewage pipe network to protect other equipment in the pumping station and ensure its normal operation.

[0003] Existing shredders use an electric motor to drive a planetary gear set, which in turn drives the crushing rollers and drum to rotate. When debris such as wood chips, empty bottles, and cloth pieces from the sewage enter the shredder, the drum rotates towards the crushing rollers. Small debris passes through the screen and the shredder, while larger debris is carried between the two sets of crushing rollers by the rotational force of the drum. The two sets of crushing rollers, rotating in opposite directions, crush the debris. The crushed debris is then discharged into the sewage by the water flow. However, in actual use, some of the crushed debris sticks to the gaps between the teeth of the crushing rollers. Debris that remains for a long time may reduce the service life of the crushing rollers.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a crushing grid. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a crushing grid.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crushing grid, comprising: a base, a support above the base, a top seat via the support, an active crushing roller and a driven crushing roller symmetrically arranged inside the base for crushing foreign objects, a drive motor above the top seat, a planetary gear set inside the top seat for driving the active and driven crushing rollers to rotate, the power output end of the drive motor being fixedly connected to the planetary gear set, two sets of rotating drums symmetrically arranged on the base, the rotating drums being used to move foreign objects between the active and driven crushing rollers for crushing, a cleaning component for cleaning foreign object debris between the active and driven crushing rollers on the rotating drums, and an opening and closing plate on the base.

[0007] Preferably, the drum includes a rotating shaft rotatably mounted on a base, the rotating shaft passing through a top seat and fixedly connected to a driven gear inside a planetary gear set inside the top seat, and four sets of vertical beams are provided around the circumference of the rotating shaft via connecting rods, with several mesh screens on the four sets of vertical beams, the mesh screens being arranged in a circular vertical array on the vertical beams.

[0008] Preferably, the cleaning component includes a mounting plate disposed on a vertical beam. The mounting plate and the interior of the vertical beam have a plurality of shrinkage grooves. A shrinkage block is slidably installed inside the shrinkage groove. A shrinkage spring is also disposed inside the shrinkage groove. One end of the shrinkage spring is connected to the inner wall of the shrinkage groove, and the other end is connected to one side of the shrinkage block.

[0009] Preferably, the two end faces of the shrink block are inclined surfaces, and the shrink block shrinks into the shrink groove through the inclined surfaces when squeezed by a hard object.

[0010] Preferably, the shrink block is further provided with a brush, and the brush is made of a hard material.

[0011] Preferably, the top seat and the base are both provided with a fixing plate, the opening and closing plate can move inside the fixing plate, the fixing plate is provided with a pushing groove inside, and the pushing groove is provided with an electric telescopic rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, when the drum rotates, the shrink block contacts the teeth and gaps on the active and driven crushing rollers. At the same time, the brush on the shrink block sweeps across the gaps, loosening the debris stuck in the gaps. Due to the different rotation speeds between the drum and the active and driven crushing rollers, the long-term rotation causes the brush to clean the gaps, making the debris in the gaps increasingly loose. Combined with the impact of the water flow, the debris is washed away from the gaps and discharged through the sewage flow, preventing the debris from staying on the crushing rollers for too long, thus improving the service life of the crushing rollers and the continuous crushing efficiency of the waste.

[0014] 2. In this utility model, the operation is started by an electric telescopic rod, which moves the opening and closing plate towards the middle of the active crushing roller and the driven crushing roller, leaving only the opening and closing space between the crushing rollers. At this time, when the sewage enters the screen, the attached garbage will be directly crushed by the active crushing roller and the driven crushing roller, without the need for the rotating drum to guide the flow. This allows the screen to be accurately crushed even when the drum's flow guiding effect is insufficient, thus improving the practicality of the device. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the planetary gear set in this utility model;

[0018] Figure 3 for Figure 2 Enlarged diagram of point A in the diagram;

[0019] Figure 4 This is a partial structural schematic diagram of the present invention;

[0020] Figure 5 for Figure 4 Enlarged diagram of point B in the image;

[0021] Figure 6 This is a schematic diagram of the cleaning component structure in this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the fixed plate and the opening / closing plate in this utility model.

[0023] 1. Base; 2. Bracket; 3. Top seat; 4. Drive motor; 5. Planetary gear set; 6. Active crushing roller; 7. Driven crushing roller; 8. Drum; 9. Rotating shaft; 10. Screen; 11. Vertical beam; 12. Cleaning assembly; 1201. Mounting plate; 1202. Shrink block; 1203. Brush; 1204. Shrink groove; 1205. Shrink spring; 13. Fixing plate; 14. Opening and closing plate; 15. Pushing groove; 16. Electric telescopic rod. Detailed Implementation

[0024] like Figure 1-7 As shown, this utility model provides a crushing grid, including: a base 1, a support 2 above the base 1, a top seat 3 on the base 1 via the support 2, an active crushing roller 6 and a driven crushing roller 7 rotating in opposite directions inside the base 1 for crushing foreign objects, a drive motor 4 above the top seat 3, a planetary gear set 5 inside the top seat 3 for driving the active crushing roller 6 and the driven crushing roller 7 to rotate, the power output end of the drive motor 4 is fixedly connected to the planetary gear set 5, two sets of rotating drums 8 are also symmetrically arranged on the base 1, the rotating drums 8 are used to move foreign objects between the active crushing roller 6 and the driven crushing roller 7 for crushing, the rotating drum 8 includes a rotating shaft 9 rotatably arranged on the base 1, the rotating shaft 9 passes through the top seat 3 and is fixedly connected to the driven gear inside the planetary gear set 5 inside the top seat 3, four sets of vertical beams 11 are arranged around the circumference of the rotating shaft 9 via a connecting rod, and several screens 10 are arranged on the four sets of vertical beams 11 in a circular vertical array on the vertical beams 11;

[0025] It should be noted that the drive motor 4 drives the planetary gear set 5 to rotate. The driving and driven gears inside the planetary gear set 5 drive the driving crushing roller 6, the driven crushing roller 7, and the two drums 8 to rotate. The driving crushing roller 6 and the driven crushing roller 7 rotate in opposite directions. The single drum 8 rotates in opposite directions with both the driving crushing roller 6 and the driven crushing roller 7. This allows debris such as wood chips, empty bottles, and cloth pieces in the sewage to be driven into the space between the driving crushing roller 6 and the driven crushing roller 7 for crushing when they come into contact with the drum 8. The rotation speeds of the drum 8 and the driving crushing roller 6 and the driven crushing roller 7 are different.

[0026] The drum 8 is also equipped with a cleaning component 12 for cleaning foreign objects and debris between the active crushing roller 6 and the driven crushing roller 7. The cleaning component 12 includes a mounting plate 1201 set on the vertical beam 11. The mounting plate 1201 and the vertical beam 11 have several shrinkage grooves 1204 inside. A shrinkage block 1202 is slidably installed inside the shrinkage groove 1204. A shrinkage spring 1205 is also provided inside the shrinkage groove 1204. One end of the shrinkage spring 1205 is connected to the inner wall of the shrinkage groove 1204, and the other end is connected to one side of the shrinkage block 1202. The two end faces of the shrinkage block 1202 are inclined. When the shrinkage block 1202 is squeezed by a hard object, it shrinks into the shrinkage groove 1204 through the inclined surface. A brush 1203 is also provided on the shrinkage block 1202. The brush 1203 is made of a hard material.

[0027] When the active crushing roller 6 and the driven crushing roller 7 crush debris, residual debris adheres to the gaps between the teeth of the crushing rollers. At this time, the impact of the water flow alone cannot wash all the debris away from the crushing rollers. When the drum 8 rotates, the shrink block 1202 will contact the teeth and gaps of the active crushing roller 6 and the driven crushing roller 7. At the same time, the brush 1203 on the shrink block 1202 will sweep across the gaps between the teeth, causing the debris stuck in the gaps to loosen. Since the rotation speed of the drum 8 is different from that of the active crushing roller 6 and the driven crushing roller 7, the long-term rotation will cause the brush 1203 to clean the gaps between the teeth, making the debris in the gaps between the teeth of the crushing rollers looser and looser. With the impact of the water flow, the debris will be washed away from the gaps between the teeth and discharged through the sewage flow, so that the debris in the gaps between the teeth will not stay on the crushing rollers for too long, improving the service life of the crushing rollers and the crushing efficiency of continuous waste crushing.

[0028] At the same time, when the shrink block 1202 touches the teeth, the end face of the teeth will contact the inclined surface of the shrink block 1202, squeezing the shrink block 1202 into the shrink groove 1204. However, the brush 1203 can still clean the teeth and the gaps between the teeth. When it is separated from the teeth, the shrink block 1202 will spring back to its original position under the action of the shrink spring 1205, so that it can be rotated and cleaned again.

[0029] The base 1 is also provided with an opening and closing plate 14. The top seat 3 and the base 1 are both provided with a fixing plate 13. The opening and closing plate 14 can move inside the fixing plate 13. The fixing plate 13 is provided with a pushing groove 15 inside. The pushing groove 15 is provided with an electric telescopic rod 16 inside.

[0030] It should be noted that when a small flow of sewage passes through the screen, the rotational drainage effect of the drum 8 is reduced. At this time, the electric telescopic rod 16 is activated, moving the opening and closing plate 14 towards the middle of the active crushing roller 6 and the driven crushing roller 7, leaving only the opening and closing space between the crushing rollers. When the sewage enters the screen, the attached garbage will be directly crushed by the active crushing roller 6 and the driven crushing roller 7, without the need for the drum 8 to rotate and drain. This allows the screen to accurately crush even when the drainage effect of the drum 8 is insufficient, improving the practicality of the device.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A crushing grid, characterized in that, include: A base (1) is provided with a support (2) above it. The base (1) is provided with a top seat (3) through the support (2). The base (1) is symmetrically provided with an active crushing roller (6) and a driven crushing roller (7) that rotate in opposite directions to crush foreign objects. A drive motor (4) is provided above the top seat (3). A planetary gear set (5) is provided inside the top seat (3) to drive the active crushing roller (6) and the driven crushing roller (7) to rotate. The power output end of the drive motor (4) is fixedly connected to the planetary gear set (5). Two sets of rotating drums (8) are also symmetrically provided on the base (1). The rotating drums (8) are used to move foreign objects between the active crushing roller (6) and the driven crushing roller (7) for crushing. A cleaning component (12) is also provided on the rotating drums (8) to clean the foreign object debris between the active crushing roller (6) and the driven crushing roller (7). An opening and closing plate (14) is also provided on the base (1).

2. The pulverizing grid according to claim 1, characterized in that: The drum (8) includes a rotating shaft (9) rotatably mounted on the base (1). The rotating shaft (9) passes through the top seat (3) and is fixedly connected to the driven gear inside the planetary gear set (5) inside the top seat (3). The circumference of the rotating shaft (9) is provided with four sets of vertical beams (11) via connecting rods. Several mesh screens (10) are mounted on the four sets of vertical beams (11). The mesh screens (10) are arranged in a circular vertical array on the vertical beams (11).

3. The pulverizing grid according to claim 1, characterized in that: The cleaning component (12) includes a mounting plate (1201) disposed on a vertical beam (11). The mounting plate (1201) and the vertical beam (11) have several shrinkage grooves (1204) inside. A shrinkage block (1202) is slidably installed inside the shrinkage groove (1204). A shrinkage spring (1205) is also disposed inside the shrinkage groove (1204). One end of the shrinkage spring (1205) is connected to the inner wall of the shrinkage groove (1204), and the other end is connected to one side of the shrinkage block (1202).

4. The pulverizing grid according to claim 3, characterized in that: The two end faces of the shrink block (1202) are inclined surfaces. When the shrink block (1202) is squeezed by a hard object, it shrinks into the shrink groove (1204) through the inclined surface.

5. The pulverizing grid according to claim 4, characterized in that: The shrink block (1202) is also provided with a brush (1203), and the brush (1203) is made of a hard material.

6. The pulverizing grid according to claim 1, characterized in that: The top seat (3) and the base (1) are both provided with a fixing plate (13). The opening and closing plate (14) can move inside the fixing plate (13). The fixing plate (13) is provided with a pushing groove (15). The pushing groove (15) is provided with an electric telescopic rod (16).

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