Trash blocking device for water environment protection

By designing a combined structure of the folding shaft and the buffer spring in the dust blocking device, the impact force is buffered, and the problem of easy damage to the dust blocking device under the rapids of the river is solved, which extends the service life and reduces the maintenance frequency. At the same time, the planting seat and the driving motor are used. Improves stability and operational ease.

CN119287845APending Publication Date: 2025-01-10YANGTZE ECOLOGY & ENVIRONMENT CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411424321.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-12
Publication Date
2025-01-10

AI Technical Summary

Technical Problem

In rivers with rapid water flow, the sewage blocking device is easily damaged and deformed due to long-term impact, which affects the service life and maintenance frequency.

Method used

A dirt blocking device including a load bearing mechanism and a buffering mechanism is designed. When the movable plate on the dirt blocking assembly rotates through the folding shaft when impacted, the rotating rod squeezes the moving slider, the slider slides in the sliding groove, and the buffering spring is applied. Resilience force, thereby buffering the impact force, extending the device life and reducing maintenance.

Benefits of technology

It effectively extends the service life of the dirty-blocking device, reduces maintenance frequency, and improves the stability and operation convenience of the device through planting seats and drive motors.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119287845A_ABST
    Figure CN119287845A_ABST
Patent Text Reader

Abstract

A trash holding device for water environment protection comprises a bearing mechanism and a buffering mechanism. The bearing mechanism comprises a base and a side mounting base, a gate plate body is mounted on the side mounting base, a slot is formed in the front surface of the gate plate body and penetrates through the gate plate body, a top mounting groove is formed in the upper surface of the gate plate body and communicates with the slot, and a built-in grid plate is mounted in the top mounting groove; the built-in grid plate is in sliding fit with the top mounting groove, and a plurality of grid mesh holes are formed in one surface of the built-in grid plate. The buffering mechanism comprises an extension plate arranged on the gate plate body and a buffering rail plate fixedly installed on the extension plate. According to the trash holding device, impact force borne by the trash holding assembly can be reduced, so that the service life of the trash holding device can be prolonged, and the maintenance frequency is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the field of pollution-blocking equipment, and in particular relates to a pollution-blocking device for water environment protection. Background Art

[0002] Water environment protection refers to the protection and improvement of water bodies and their ecosystems to ensure the sustainable use of water resources and the health of the ecosystem. The significance of water environment protection is very important. Water bodies are habitats for many organisms, including fish, plants and other aquatic organisms. Protecting the water environment helps maintain biodiversity and the balance of the ecosystem. Water resources are essential for economic activities such as agriculture, industry and tourism. A good water environment can promote the sustainable development of these industries, and clean water bodies are important places for people to relax and have fun, such as swimming, fishing and boating. Protecting the water environment can improve people's quality of life. By implementing effective water environment management measures, such as pollution control, ecological restoration, rational allocation of water resources and public education, the water environment can be effectively protected and improved; When treating sewage in rivers, it is generally practiced to lay grids to block polluted garbage. In rivers with fast-flowing water, some large pieces of garbage will come into direct contact with the pollution-blocking device along with the water flow. Long-term impact can easily cause damage and deformation of the pollution-blocking device, thus affecting its normal use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pollution-blocking device for water environment protection. When the first movable plate and the second movable plate on the pollution-blocking assembly are hit, they will rotate at a certain angle due to the folding axis. When the first movable plate and the second movable plate rotate, the movable slider will be pressed inward through the rotating rod. At this time, the movable slider will slide in the sliding groove, and the buffer spring can apply a rebound force to the movable slider, thereby reducing the impact force on the pollution-blocking assembly, thereby extending the service life of the pollution-blocking device and reducing the frequency of maintenance.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A pollution intercepting device for water environment protection, comprising a bearing mechanism and a buffer mechanism; The bearing mechanism includes a base and a side mounting seat, a gate body is mounted on the side mounting seat, a groove is provided on the front surface of the gate body, the groove runs through the gate body, a top mounting groove is provided on the upper surface of the gate body, the top mounting groove is connected to the groove, a built-in grid plate is installed in the top mounting groove, the built-in grid plate is slidably matched with the top mounting groove, and a surface of the built-in grid plate is provided with a plurality of grid holes.

[0005] The buffer mechanism comprises an extension plate arranged on the gate plate body and a buffer rail plate fixedly installed on the extension plate.

[0006] Preferably, there are two extension plates, which are fixedly mounted at both ends of the gate body respectively. A sliding groove is provided on one surface of the buffer rail plate, in which a movable slider is installed, and the movable slider is slidably matched with the sliding groove.

[0007] Preferably, a movable component is provided on the movable slider, a dirt-blocking component is provided at one end of the movable component, the number of the dirt-blocking components is two, and a plurality of connecting rods are fixedly connected between the two dirt-blocking components.

[0008] Preferably, the dirt-blocking assembly comprises a first movable plate and a second movable plate, and a plurality of filter holes are formed on the first movable plate and the second movable plate, and the filter holes penetrate through the first movable plate and the second movable plate.

[0009] Preferably, the sliding groove is a convex groove structure, and the movable slider is an I-shaped plate structure.

[0010] Preferably, the movable assembly comprises a second hinge seat arranged on the movable slider, a rotating rod is hinged on the second hinge seat, and an end of the rotating rod away from the second hinge seat is hinged to the first hinge seat.

[0011] Preferably, there are two first hinge seats and two rotating rods, and the two first hinge seats are connected to the first movable plate and the second movable plate respectively.

[0012] Preferably, a folding axis is provided at the connection between the first movable plate and the second movable plate, and the first movable plate is rotatably matched with the second movable plate via the folding axis.

[0013] Preferably, buffer springs are fixedly installed on both side surfaces inside the sliding groove, and one end of the buffer spring is fixedly connected to the movable sliding block.

[0014] Preferably, a positioning assembly is provided on one side of the side mounting seat, and the positioning assembly includes a planting seat fixedly connected to the side mounting seat, and a plurality of planting slots are opened on the planting seat, and the planting slots pass through the planting seat.

[0015] Preferably, both side surfaces of the gate body are fixedly connected with the gate shaft, a driving bin and a placement seat are fixedly provided on one side of the side mounting seat, the driving bin is located in the placement seat, a driving motor is fixedly installed on the upper surface of the driving bin, a first gear is fixedly connected to the output end of the driving motor, a second gear is fixedly connected to the side surface at one end of the gate shaft, and the first gear is meshed with the second gear.

[0016] Preferably, a reinforcement assembly is provided on the side mounting seat, and the reinforcement assembly includes a longitudinal reinforcement rib plate fixedly connected to two side surfaces of the side mounting seat, and one end of the longitudinal reinforcement rib plate is fixedly connected to a transverse reinforcement rib plate.

[0017] A method for intercepting pollution of a pollution intercepting device for water environment protection comprises the following steps: By setting a gate body with built-in grid plates and pollution-blocking components, when it is necessary to treat the water environment on the riverbed, the pollution-blocking device is placed on the river channel with more pollutants; When sludge and some polluted garbage are transported to the position of the gate body with the water flow, large pieces of pollutants will first come into contact with the pollution blocking component. When the first movable plate and the second movable plate on the pollution blocking component are hit, they will rotate at a certain angle due to the folding axis. Then, when the first movable plate and the second movable plate rotate, the movable slider will be squeezed inward through the rotating rod. At this time, the movable slider will slide in the sliding groove, and the buffer spring can exert a rebound force on the movable slider, thereby reducing the impact force on the pollution blocking component, thereby extending the service life of the pollution blocking device and reducing the frequency of maintenance.

[0018] The present invention can achieve the following beneficial effects: 1. The present invention provides a gate body with a built-in grid plate and a pollution-blocking component. When it is necessary to treat the water environment on the riverbed, the device can be placed on a river channel with more pollutants. When sludge and some polluted garbage are transported to the position of the gate body with the water flow, large pieces of pollutants will first contact the pollution-blocking component. When the first movable plate and the second movable plate on the pollution-blocking component are hit, they will rotate at a certain angle due to the folding axis. Then, when the first movable plate and the second movable plate rotate, the movable slider will be squeezed inwardly through the rotating rod. At this time, the movable slider will slide in the sliding groove, and the buffer spring can apply a rebound force to the movable slider, thereby reducing the impact force on the pollution-blocking component, thereby extending the service life of the pollution-blocking device and reducing the frequency of maintenance.

[0019] 2. The present invention installs a positioning assembly with a planting seat and a planting groove on the side mounting seat. The planting seat is located at both ends of the riverbed. Trees can be planted in the planting grooves, and the root system of the trees can be used to stabilize the water and soil, thereby improving the stability of the installation of the device. By providing a driving compartment with a driving motor, the driving motor can be started to drive the first gear to engage with the second gear, thereby driving the gate plate shaft to rotate, thereby adjusting the inclination angle of the gate plate body. When large-area sewage discharge operations are required, the gate plate body can be directly opened without disassembling the entire sewage intercepting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention (front view); Figure 2 This is a schematic diagram of the specific structure of the pollution blocking assembly of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention (rear view); Figure 4A schematic diagram of the internal structure of the drive compartment of the present invention; Figure 5 It is a right side view of the present invention; Figure 6 It is a front view of the present invention.

[0021] In the figure: 1-base; 2-side mounting seat; 3-gate body; 4-slot; 5-built-in grid; 6-grid mesh hole; 7-mounting screw hole; 8-mounting screw; 9-top mounting slot; 10-positioning component; 11-planting slot; 12-trash blocking component; 13-first movable plate; 14-second movable plate; 15-connecting rod; 16-driving compartment; 17-reinforcement component; 18-filter mesh hole; 19-first hinge seat; 20-rotating rod; 21-second hinge seat; 22-movable slider; 23-sliding slot; 24-buffer spring; 25-buffer rail plate; 26-folding shaft; 27-extension plate; 28-drive motor; 29-mounting seat; 30-first gear; 31-second gear; 32-gate rotating shaft; 33-longitudinal reinforcing rib plate; 34-transverse reinforcing rib plate; 35-planting seat. DETAILED DESCRIPTION

[0022] Embodiment 1: See also Figure 1-Figure 6 As shown, a pollution intercepting device for water environment protection comprises: The bearing mechanism includes a base 1 and a side mounting seat 2. The number of the side mounting seats 2 is two. The two side mounting seats 2 are fixedly mounted at both ends of the base 1 respectively. A gate body 3 is mounted between the two side mounting seats 2. The gate body 3 is a rectangular plate structure. A slot 4 is provided on the front surface of the gate body 3. The slot 4 runs through the gate body 3. A top mounting slot 9 is provided on the upper surface of the gate body 3. The top mounting slot 9 is connected to the slot 4. A built-in grid plate 5 is installed in the top mounting slot 9. The built-in grid plate 5 is slidably matched with the top mounting slot 9. A surface of the built-in grid plate 5 is provided with a plurality of grid mesh holes 6. The grid mesh holes 6 are a rectangular slot structure. The grid mesh holes 6 run through the built-in grid plate 5. The buffer mechanism includes an extension plate 27 arranged on the gate body 3 and a buffer rail plate 25 fixedly installed on the extension plate 27. There are two extension plates 27, which are respectively fixedly installed at both ends of the gate body 3. A sliding groove 23 is provided on one surface of the buffer rail plate 25. A movable slider 22 is installed in the sliding groove 23. The movable slider 22 slides with the sliding groove 23. There are two movable sliders 22. Both movable sliders 22 are provided with movable components. A dirt blocking component 12 is provided at one end of the movable component. There are two dirt blocking components 12. A plurality of connecting rods 15 are fixedly connected between the two dirt blocking components 12. The dirt blocking components 12 include a first movable plate 13 and a second movable plate 14. A plurality of filter holes 18 are provided on the first movable plate 13 and the second movable plate 14. The filter holes 18 penetrate the first movable plate 13 and the second movable plate 14.

[0023] Specifically, the sliding groove 23 is a convex groove structure, and the movable slider 22 is an I-shaped plate structure.

[0024] Specifically, the movable component includes a second hinge seat 21 disposed on a movable slider 22 , a rotating rod 20 is hingedly connected to the second hinge seat 21 , and an end of the rotating rod 20 away from the second hinge seat 21 is hingedly connected to the first hinge seat 19 .

[0025] Specifically, there are two first hinge seats 19 and two rotating rods 20 , and the two first hinge seats 19 are connected to the first movable plate 13 and the second movable plate 14 respectively.

[0026] Specifically, a folding shaft 26 is provided at the connection between the first movable plate 13 and the second movable plate 14 , and the first movable plate 13 is rotatably matched with the second movable plate 14 via the folding shaft 26 .

[0027] Specifically, buffer springs 24 are fixedly installed on both side surfaces inside the sliding groove 23 , and one end of the buffer spring 24 is fixedly connected to the movable slider 22 .

[0028] As can be seen from the above, the present device is provided with a gate body 3 with a built-in grid plate 5 and a pollution-blocking component 12. When it is necessary to treat the water environment on the riverbed, the present device can be placed on a river channel with more pollutants. When the sludge and some polluted garbage are transported to the position of the gate body 3 with the water flow, large pieces of pollutants will first contact the pollution-blocking component 12. When the first movable plate 13 and the second movable plate 14 on the pollution-blocking component 12 are hit, they will rotate a certain angle due to the folding axis 26. Then, when the first movable plate 13 and the second movable plate 14 rotate, the movable slider 22 will be squeezed inwardly through the rotating rod 20. At this time, the movable slider 22 will slide in the sliding groove 23, and the buffer spring 24 can apply a rebound force to the movable slider 22, thereby reducing the impact force on the pollution-blocking component 12, thereby extending the service life of the pollution-blocking device and reducing the frequency of maintenance.

[0029] Embodiment 2: The bearing mechanism includes a base 1 and a side mounting seat 2. The number of the side mounting seats 2 is two. The two side mounting seats 2 are fixedly mounted at both ends of the base 1 respectively. A gate body 3 is mounted between the two side mounting seats 2. The gate body 3 is a rectangular plate structure. A slot 4 is provided on the front surface of the gate body 3. The slot 4 runs through the gate body 3. A top mounting slot 9 is provided on the upper surface of the gate body 3. The top mounting slot 9 is connected to the slot 4. A built-in grid plate 5 is installed in the top mounting slot 9. The built-in grid plate 5 is slidably matched with the top mounting slot 9. A surface of the built-in grid plate 5 is provided with a plurality of grid mesh holes 6. The grid mesh holes 6 are a rectangular slot structure. The grid mesh holes 6 run through the built-in grid plate 5. The buffer mechanism includes an extension plate 27 arranged on the gate body 3 and a buffer rail plate 25 fixedly installed on the extension plate 27. There are two extension plates 27, which are respectively fixedly installed at both ends of the gate body 3. A sliding groove 23 is provided on one surface of the buffer rail plate 25. A movable slider 22 is installed in the sliding groove 23. The movable slider 22 slides with the sliding groove 23. There are two movable sliders 22. Both movable sliders 22 are provided with movable components. A dirt blocking component 12 is provided at one end of the movable component. There are two dirt blocking components 12. A plurality of connecting rods 15 are fixedly connected between the two dirt blocking components 12. The dirt blocking components 12 include a first movable plate 13 and a second movable plate 14. A plurality of filter holes 18 are provided on the first movable plate 13 and the second movable plate 14. The filter holes 18 penetrate the first movable plate 13 and the second movable plate 14.

[0030] See also Figure 1-Figure 6 As shown, a plurality of mounting screw holes 7 are provided on one surface of the built-in grid plate 5 and the gate body 3 . The mounting screw holes 7 penetrate the built-in grid plate 5 and the gate body 3 , and mounting screws 8 are threaded into the mounting screw holes 7 .

[0031] Specifically, a positioning assembly 10 is disposed on one side of the side mounting seat 2 . The positioning assembly 10 includes a planting seat 35 fixedly connected to the side mounting seat 2 . A plurality of planting slots 11 are provided on the planting seat 35 . The planting slots 11 penetrate the planting seat 35 .

[0032] As can be seen from the above, the device installs a positioning component 10 with a planting seat 35 and a planting groove 11 on the side mounting seat 2. The planting seat 35 is located at both ends of the riverbed. Trees can be planted in the planting groove 11, and the root system of the trees can be used to stabilize the water and soil, thereby improving the stability of the installation of the device.

[0033] Embodiment 3: See also Figure 1-Figure 6 As shown, both side surfaces of the gate body 3 are fixedly connected with the gate shaft 32, and a driving bin 16 and a mounting seat 29 are fixedly provided on one side of the side mounting seat 2. The driving bin 16 is located in the mounting seat 29, and a driving motor 28 is fixedly installed on the upper surface of the driving bin 16. A first gear 30 is fixedly connected to the output end of the driving motor 28, and a second gear 31 is fixedly connected to the side surface at one end of the gate shaft 32, and the first gear 30 is meshed with the second gear 31.

[0034] Specifically, a reinforcement assembly 17 is provided on the side mounting seat 2 , and the reinforcement assembly 17 includes a longitudinal reinforcement rib plate 33 fixedly connected to two side surfaces of the side mounting seat 2 , and a transverse reinforcement rib plate 34 is fixedly connected to one end of the longitudinal reinforcement rib plate 33 .

[0035] As can be seen from the above, the device is provided with a driving chamber 16 with a driving motor 28, which can start the driving motor 28 to drive the first gear 30 to engage with the second gear 31, and then drive the gate shaft 32 to rotate, thereby adjusting the inclination angle of the gate body 3. When a large-area sewage discharge operation is required, the gate body 3 can be directly opened without disassembling the entire sewage intercepting device.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0038] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A pollution interception device for water environment protection, characterized in that: It includes a bearing mechanism and a buffer mechanism; The bearing mechanism comprises a base (1) and a side mounting seat (2), a gate body (3) is mounted on the side mounting seat (2), a slot (4) is provided on the front surface of the gate body (3), the slot (4) penetrates the gate body (3), a top mounting slot (9) is provided on the upper surface of the gate body (3), the top mounting slot (9) is connected to the slot (4), a built-in grid plate (5) is installed in the top mounting slot (9), the built-in grid plate (5) is slidably matched with the top mounting slot (9), and a surface of the built-in grid plate (5) is provided with a plurality of grid mesh holes (6); The buffer mechanism comprises an extension plate (27) arranged on the gate plate body (3) and a buffer rail plate (25) fixedly mounted on the extension plate (27).

2. The pollution intercepting device for water environment protection according to claim 1 is characterized by: There are two extension plates (27), which are respectively fixedly mounted on the two ends of the gate body (3). A sliding groove (23) is provided on one surface of the buffer rail plate (25), and a movable slider (22) is installed in the sliding groove (23). The movable slider (22) is slidably matched with the sliding groove (23).

3. The pollution intercepting device for water environment protection according to claim 2 is characterized by: A movable component is arranged on the movable slider (22), a dirt blocking component (12) is arranged at one end of the movable component, the number of the dirt blocking components (12) is two, and a plurality of connecting rods (15) are fixedly connected between the two dirt blocking components (12).

4. The pollution intercepting device for water environment protection according to claim 3 is characterized by: The dirt retaining assembly (12) comprises a first movable plate (13) and a second movable plate (14), wherein a plurality of filter holes (18) are provided on the first movable plate (13) and the second movable plate (14), and the filter holes (18) penetrate the first movable plate (13) and the second movable plate (14).

5. The pollution intercepting device for water environment protection according to claim 2 is characterized by: The sliding groove (23) is a convex groove structure, and the movable slider (22) is an I-shaped plate structure.

6. The pollution intercepting device for water environment protection according to claim 3 is characterized by: The movable assembly comprises a second hinge seat (21) arranged on a movable slider (22), a rotating rod (20) being hingedly connected to the second hinge seat (21), and an end of the rotating rod (20) away from the second hinge seat (21) being hingedly connected to the first hinge seat (19).

7. The pollution intercepting device for water environment protection according to claim 6 is characterized by: The number of the first hinge seats (19) and the number of the rotating rods (20) are both two, and the two first hinge seats (19) are respectively connected to the first movable plate (13) and the second movable plate (14).

8. The pollution intercepting device for water environment protection according to claim 7 is characterized by: A folding shaft (26) is provided at the connection between the first movable plate (13) and the second movable plate (14), and the first movable plate (13) is rotatably matched with the second movable plate (14) via the folding shaft (26).

9. The pollution intercepting device for water environment protection according to claim 7 is characterized by: Buffer springs (24) are fixedly mounted on both side surfaces inside the sliding groove (23), and one end of the buffer spring (24) is fixedly connected to the movable sliding block (22).

10. The pollution intercepting device for water environment protection according to claim 1, characterized in that: A positioning assembly (10) is provided on one side of the side mounting seat (2), and the positioning assembly (10) comprises a planting seat (35) fixedly connected to the side mounting seat (2), and a plurality of planting slots (11) are provided on the planting seat (35), and the planting slots (11) penetrate the planting seat (35).

11. The pollution intercepting device for water environment protection according to claim 1 is characterized by: Both side surfaces of the gate body (3) are fixedly connected to a gate rotating shaft (32); a driving chamber (16) and a mounting seat (29) are fixedly arranged on one side surface of the side mounting seat (2); the driving chamber (16) is located in the mounting seat (29); a driving motor (28) is fixedly mounted on the upper surface of the driving chamber (16); a first gear (30) is fixedly connected to the output end of the driving motor (28); a second gear (31) is fixedly connected to the side surface of one end of the gate rotating shaft (32); and the first gear (30) is meshed with the second gear (31).

12. The pollution intercepting device for water environment protection according to claim 11, characterized in that: A reinforcement assembly (17) is provided on the side mounting seat (2), and the reinforcement assembly (17) comprises a longitudinal reinforcement rib plate (33) fixedly connected to two side surfaces of the side mounting seat (2), and a transverse reinforcement rib plate (34) is fixedly connected to one end of the longitudinal reinforcement rib plate (33).

13. A method for intercepting pollution using a pollution intercepting device for water environment protection according to any one of claims 1 to 12, characterized in that The following steps are involved: By providing a gate body (3) with a built-in grid plate (5) and a pollution-blocking assembly (12), when it is necessary to treat the water environment on the riverbed, the pollution-blocking device is placed on a river channel with more pollutants; When the sludge and some polluted garbage are transported to the position of the gate body (3) by the water flow, the large pieces of pollutants will first contact the dirt blocking component (12). When the first movable plate (13) and the second movable plate (14) on the dirt blocking component (12) are impacted, they will rotate at a certain angle due to the folding shaft (26). Then, when the first movable plate (13) and the second movable plate (14) rotate, the movable slider (22) will be pressed inwardly through the rotating rod (20). At this time, the movable slider (22) will slide in the sliding groove (23), and the buffer spring (24) can apply a rebound force to the movable slider (22), thereby reducing the impact force on the dirt blocking component (12), thereby extending the service life of the dirt blocking device and reducing the frequency of maintenance.