Anti-eccentricity device of center rotating mud scraper

Abstract

The utility model discloses an anti-eccentricity device of a center rotating mud scraper, which relates to the technical field of mud scrapers and comprises a plurality of mud buckets arranged at the bottom of a sedimentation tank and a bridge frame welded on the outer wall of the top of the sedimentation tank, a transmission mechanism and center rotating mud scrapers are arranged in the sedimentation tank, and the center rotating mud scrapers are distributed at equal intervals and matched with the mud buckets. And a gear motor is fixedly mounted on the outer wall of the top center of the bridge. According to the center transmission mud scraper, the bottom of each center transmission mud scraper is provided with the anti-deviation wheel structure, the reinforcing ribs are fixed in the circular mud bucket around the center of the main shaft, and when the center transmission mud scraper rotates, the anti-deviation wheel structures rotate in the mud bucket along the inner wall of the center transmission mud scraper, so that the center transmission mud scraper is prevented from being eccentric during rotation; the center transmission mud scraper is more stable in operation and more uniform in mud scraping; and the transmission mechanism is arranged, so that when a plurality of center transmission mud scrapers are used, one speed reducing motor can be shared, and the purchase cost and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mud scrapers, in particular to an anti-eccentricity device for a centrally rotating mud scraper. Background Art

[0002] The center drive scraper is a kind of mechanical equipment commonly used in water plants or sewage treatment plants to scrape and remove sludge in sedimentation tanks through hydrostatic pressure and other working methods. It is mainly composed of drive mechanism, main shaft, steel beam, scraper plate and underwater bearing and other parts, and has the advantages of corrosion resistance and long service life. However, the existing center drive scraper has the following problems:

[0003] First, the existing central transmission scraper has the disadvantage that the bottom of the scraper is easily eccentric, resulting in uneven scraping.

[0004] Secondly, the existing central transmission scrapers generally need to be equipped with multiple scrapers when the sedimentation tank is rectangular, so each scraper needs to be equipped with a reduction motor separately, which increases the purchase cost and maintenance cost. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an anti-eccentricity device for a central rotating mud scraper.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A central rotating scraper anti-eccentricity device comprises a plurality of mud buckets arranged at the bottom of a sedimentation tank and a bridge frame welded to the top outer wall of the sedimentation tank, wherein a transmission mechanism and central rotating scrapers equidistantly distributed and adapted to the mud buckets are arranged in the sedimentation tank, and a reduction motor is fixedly installed on the top center outer wall of the bridge frame;

[0008] The central rotating shaft scraper includes a main shaft, four annularly distributed scraper arms fixedly connected to the lower part of the main shaft, an anti-deviation wheel structure and a bearing seat fixedly installed on the inner wall of the bottom of the mud bucket. The outer ends of the four scraper arms are connected in sequence by four cables, and the output shaft of the reduction motor passes through the bridge and is coaxially fixedly connected to the top end of the main shaft in the middle through a coupling.

[0009] As a preferred technical solution, the scraper arm is fixedly connected with scrapers distributed at equal distances, and the bottom end of the main shaft is connected to the inner wall of the bearing seat through a bearing.

[0010] As a preferred technical solution, the anti-wheel deviation structure includes four annularly distributed reinforcing ribs welded to the lower outer wall of the main shaft and four rollers sequentially installed on the outer ends of the four reinforcing ribs, and the four rollers all form a rolling fit with the circumferential inner wall of the mud bucket.

[0011] As a preferred technical solution, the transmission mechanism includes a first transmission assembly, a second transmission assembly, and bevel gear 1, bevel gear 2, and bevel gear 3 which are fixedly connected to the upper part of the main shaft from left to right.

[0012] As a preferred technical solution, the first transmission assembly includes two fixed blocks symmetrically welded to the outer wall of the bottom of the bridge frame, a transmission shaft 1 connected to the inner walls of the two fixed blocks through two bearings, and a bevel gear 4 and a bevel gear 5 fixedly connected to the two ends of the transmission shaft 1 in sequence.

[0013] As a preferred technical solution, the second transmission assembly includes two fixed seats symmetrically welded to the outer wall of the bottom of the bridge frame, a transmission shaft 2 connected to the inner walls of the two fixed seats through two bearings, and a bevel gear 6 and a bevel gear 7 fixedly connected to the two ends of the transmission shaft 2 in sequence.

[0014] As a preferred technical solution, the bevel gear one is meshed with the bevel gear four, the bevel gear five and the bevel gear seven are both meshed with the bevel gear two, and the bevel gear three is meshed with the bevel gear six.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model provides an anti-deviation wheel structure at the bottom of each center-driven scraper, which is fixed in a circular mud bucket around the center of the main shaft through reinforcing ribs. When the center-driven scraper rotates, the anti-deviation wheel structure rotates along the inner wall of the mud bucket, preventing the center-driven scraper from rotating eccentrically, making the center-driven scraper run more stably and scraping mud more evenly.

[0017] 2. The utility model is provided with a transmission mechanism. When multiple center-drive scrapers are used, one reduction motor can be shared, thus reducing purchase and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall front structure of the central transmission scraper of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall top view of the central transmission scraper of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall top view of the anti-skew wheel structure of the utility model;

[0022] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A.

[0023] In the figure: 1. sedimentation tank; 2. mud bucket; 3. bridge; 4. reduction motor; 5. main shaft; 6. scraper arm; 7. scraper; 8. anti-wheel deviation structure; 9. bearing seat; 10. cable; 11. reinforcing rib; 12. roller; 13. bevel gear one; 14. bevel gear two; 15. bevel gear three; 16. transmission shaft one; 17. bevel gear four; 18. bevel gear five; 19. fixed seat; 20. transmission shaft two; 21. bevel gear six; 22. bevel gear seven; 23. fixed block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example

[0025] Reference Figure 1-5 , a central rotating scraper anti-eccentricity device, comprising a plurality of mud buckets 2 arranged at the bottom of a sedimentation tank 1 and a bridge 3 welded to the top outer wall of the sedimentation tank 1;

[0026] Furthermore, a transmission mechanism and a centrally rotating scraper equidistantly distributed and adapted to the mud bucket 2 are provided in the sedimentation tank 1, and a reduction motor 4 is fixedly installed on the top center outer wall of the bridge 3;

[0027] In this embodiment, the central shaft scraper includes a main shaft 5, four annularly distributed scraping arms 6 fixedly connected to the lower part of the main shaft 5, an anti-deviation wheel structure 8 and a bearing seat 9 fixedly installed on the inner wall of the bottom of the mud bucket 2. The outer ends of the four scraping arms 6 are connected in sequence by four cables 10. The output shaft of the reduction motor 4 passes through the bridge 3 and is coaxially fixedly connected to the top of the main shaft 5 located in the middle through a coupling.

[0028] In this embodiment, the scraper arm 6 is fixedly connected with scrapers 7 that are distributed at equal distances, and the bottom end of the main shaft 5 is connected to the inner wall of the bearing seat 9 through a bearing;

[0029] In this embodiment, the anti-skew wheel structure 8 includes four annularly distributed reinforcing ribs 11 welded to the outer wall of the lower part of the main shaft 5 and four rollers 12 sequentially installed on the outer ends of the four reinforcing ribs 11, and the four rollers 12 all form a rolling fit with the circumferential inner wall of the mud bucket 2;

[0030] In this embodiment, the transmission mechanism includes a first transmission assembly, a second transmission assembly, and a bevel gear 13, a bevel gear 2 14, and a bevel gear 3 15 which are fixedly connected to the upper part of the main shaft 5 from left to right in sequence;

[0031] In this embodiment, the first transmission assembly includes two fixed blocks 23 symmetrically welded to the outer wall of the bottom of the bridge 3, a transmission shaft 16 connected to the inner walls of the two fixed blocks 23 through two bearings, and a bevel gear 4 17 and a bevel gear 5 18 fixedly connected to both ends of the transmission shaft 16 in sequence;

[0032] In this embodiment, the second transmission assembly includes two fixing seats 19 symmetrically welded to the outer wall of the bottom of the bridge frame 3, a transmission shaft 20 connected to the inner walls of the two fixing seats 19 through two bearings, and a bevel gear 6 21 and a bevel gear 7 22 fixedly connected to both ends of the transmission shaft 2 20 in sequence;

[0033] In this embodiment, bevel gear one 13 meshes with bevel gear four 17 , bevel gear five 18 and bevel gear seven 22 both mesh with bevel gear two 14 , and bevel gear three 15 meshes with bevel gear six 21 .

[0034] The working principle of this embodiment is as follows: first, the middle main shaft 5 and the bevel gear 2 14 thereon are driven to rotate by the reduction motor 4, and then the bevel gear 5 18 and the bevel gear 7 22 meshing with the bevel gear 2 14 will drive the transmission shaft 1 16 and the transmission shaft 2 20 to rotate, then the bevel gear 4 17 and the bevel gear 6 21 will rotate and drive the bevel gear 1 13 and the bevel gear 3 15 meshing therewith to rotate, so that the other two main shafts 5 will also rotate, and then when multiple center drive scrapers are used, one reduction motor 4 can be shared, which reduces the purchase cost and maintenance cost;

[0035] Secondly, each main shaft 5 will drive the scraper 7 thereon to rotate around the main shaft 5, scraping the remaining sludge at the bottom of the sedimentation tank 1 into the respective mud hoppers 2, and then discharge it through the external pump suction equipment;

[0036] Finally, an anti-deviation wheel structure 8 is provided at the bottom of each central drive scraper, which is fixed in the circular mud bucket 2 around the center of the main shaft 5 through reinforcing ribs 11. When the central drive scraper rotates, the anti-deviation wheel structure 8 rotates along the inner wall of the mud bucket 2, preventing the central drive scraper from rotating eccentrically, making the central drive scraper run more stably and scraping mud more evenly.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preventing eccentricity of a centrally rotating scraper, comprising a plurality of mud buckets (2) arranged at the bottom of a sedimentation tank (1) and a bridge frame (3) welded to the top outer wall of the sedimentation tank (1), It is characterized in that The sedimentation tank (1) is provided with a transmission mechanism and a centrally rotating mud scraper which is equidistantly distributed and matched with the mud bucket (2), and a reduction motor (4) is fixedly mounted on the top center outer wall of the bridge frame (3); The central rotating scraper comprises a main shaft (5), four scraper arms (6) arranged in an annular manner and fixedly connected to the lower part of the main shaft (5), an anti-deviation wheel structure (8), and a bearing seat (9) fixedly installed on the inner wall of the bottom of the mud bucket (2), the outer ends of the four scraper arms (6) are connected in sequence through four cables (10), and the output shaft of the reduction motor (4) passes through the bridge frame (3) and is coaxially fixedly connected to the top end of the main shaft (5) located in the middle through a coupling.

2. The anti-eccentricity device of the central rotating scraper according to claim 1, It is characterized in that The scraper arm (6) is fixedly connected to scraper plates (7) distributed at equal distances, and the bottom end of the main shaft (5) is connected to the inner wall of the bearing seat (9) via a bearing.

3. The anti-eccentricity device of the central rotating scraper according to claim 1, It is characterized in that The anti-wheel deviation structure (8) comprises four annularly distributed reinforcing ribs (11) welded to the lower outer wall of the main shaft (5) and four rollers (12) sequentially mounted on the outer ends of the four reinforcing ribs (11), and the four rollers (12) all form a rolling fit with the circumferential inner wall of the mud bucket (2).

4. The anti-eccentricity device of a central rotating scraper according to claim 1, It is characterized in that The transmission mechanism comprises a first transmission assembly, a second transmission assembly, and a bevel gear 1 (13), a bevel gear 2 (14), and a bevel gear 3 (15) which are fixedly connected to the upper part of the main shaft (5) in sequence from left to right.

5. The anti-eccentricity device of the central rotating scraper according to claim 4, It is characterized in that The first transmission assembly comprises two fixed blocks (23) symmetrically welded to the outer wall of the bottom of the bridge frame (3), a transmission shaft 1 (16) connected to the inner walls of the two fixed blocks (23) through two bearings, and a bevel gear 4 (17) and a bevel gear 5 (18) fixedly connected to the two ends of the transmission shaft 1 (16) in sequence.

6. The anti-eccentricity device of the central rotating scraper according to claim 4, It is characterized in that The second transmission assembly comprises two fixed seats (19) symmetrically welded to the outer wall of the bottom of the bridge frame (3), a transmission shaft 2 (20) connected to the inner walls of the two fixed seats (19) through two bearings, and a bevel gear 6 (21) and a bevel gear 7 (22) fixedly connected to the two ends of the transmission shaft 2 (20) in sequence.

7. The anti-eccentricity device of the central rotating scraper according to claim 4, It is characterized in that The bevel gear one (13) meshes with the bevel gear four (17), the bevel gear five (18) and the bevel gear seven (22) both mesh with the bevel gear two (14), and the bevel gear three (15) meshes with the bevel gear six (21).

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