Vacuum anti-overflow valve structure of suction-type sewer scavenger

Abstract

The utility model relates to the technical field of sewage suction trucks, and discloses a vacuum anti-overflow valve structure of a sewage suction truck, which comprises an outer shell, a top cover is arranged at the top of the outer shell, a partition plate is fixedly assembled on the inner wall of the outer shell, a circulating pipe is fixedly assembled at the bottom of the partition plate, and a filter cartridge is arranged at the top of the circulating pipe. A limiting cylinder is fixedly assembled at the bottom of the filtering cylinder, a movable pipe is fixedly assembled on the inner wall of the limiting cylinder, a transverse hole is formed in the outer edge of the movable pipe, an anti-falling block is fixedly assembled on the outer edge of the movable pipe, and an air bag is installed at the bottom of the movable pipe. Through the arrangement of the air bag, the air bag can be filled with air, the size of the air bag can be controlled, meanwhile, the air bag can float on the water surface, the air bag can be changed into a strip shape from a round shape during cleaning, and the strip-shaped air bag can be taken out from the circulation pipe to be cleaned; therefore, the problem that a hollow iron ball in an anti-overflow valve on an existing sewage suction truck is inconvenient to take out for cleaning is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage suction vehicles, in particular to a vacuum anti-overflow valve structure of a sewage suction vehicle. Background Art

[0002] The sewage suction truck is a new type of sanitation vehicle that collects, transfers, cleans and transports sludge and sewage to avoid secondary pollution. The sewage suction truck can self-prime and self-discharge, has a fast working speed, large capacity, and convenient transportation. It is suitable for collecting and transporting liquid substances such as feces, mud, crude oil, etc.

[0003] The hollow iron ball in the anti-overflow valve on the existing sewage suction truck will cause scaling on the surface after long-term use. The surface of the scaling hollow iron ball will appear uneven. The hollow iron ball in this state cannot better seal the pipe mouth, and the hollow iron ball is not easy to remove for cleaning. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a vacuum anti-overflow valve structure for a sewage suction truck, which has the advantages of easy cleaning of the airbag and good sealing, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a vacuum anti-overflow valve structure of a sewage suction truck, comprising an outer shell, a top cover is provided on the top of the outer shell, a partition is fixedly assembled on the inner wall of the outer shell, a circulation pipe is fixedly assembled on the bottom of the partition, a filter cartridge is provided on the top of the circulation pipe, a limiting cartridge is fixedly assembled on the bottom of the filter cartridge, a movable tube is fixedly assembled on the inner wall of the limiting cartridge, a transverse hole is opened on the outer edge of the movable tube, an anti-falling block is fixedly assembled on the outer edge of the movable tube, and an air bag is installed on the bottom of the movable tube.

[0006] As an optimal technical solution of the present invention, the inner wall of the top of the movable tube is fixedly equipped with a sealing sleeve, the inner wall of the sealing sleeve is fixedly equipped with a orifice plate, the inner wall of the orifice plate is slidably connected to a sealing rod, and the outer edge of the sealing rod is movably sleeved with a support spring.

[0007] As a preferred technical solution of the present invention, a mounting bracket is fixedly mounted on the top of the filter cartridge, a threaded hole is provided on the outer edge of the left end of the mounting bracket, and a long screw is threadedly connected to the inner wall of the threaded hole.

[0008] As an optimal technical solution of the present invention, the outer edge of the left end of the mounting bracket is fixedly assembled with a limiting ring, the outer edge of the limiting ring is movably sleeved with a hexagonal bolt, the hexagonal bolt is threadedly connected to the long screw, and mounting brackets are provided on both sides of the transverse hole.

[0009] As a preferred technical solution of the present invention, a square hole is provided on the outer edge of the right end of the mounting bracket, and a square column is provided on the end of the long screw away from the movable tube, and the square column is slidably connected to the square hole.

[0010] As a preferred technical solution of the present invention, a fixing bracket is fixedly mounted on the inner wall of the outer shell, and a fixing hole is provided on the outer edge of the top of the fixing bracket.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The vacuum anti-overflow valve structure of the sewage suction truck can be filled with gas through the setting of the airbag. The size of the airbag can be controlled and it can float on the water surface. During cleaning, the airbag can be changed from a round shape to a strip shape. The strip-shaped airbag can be taken out from the circulation pipe for cleaning, thereby solving the problem that the hollow iron ball in the anti-overflow valve on the existing sewage suction truck is difficult to take out for cleaning.

[0013] 2. The vacuum overflow prevention valve structure of the sewage suction truck drives the long screw to move by rotating the hexagonal bolt, the square column is disengaged from the fixed hole, and the long screw enters the horizontal hole on the movable tube. Then the filter cartridge is lifted up to bring out the air bag, so that the device can remove the air bag when removing the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A in the figure shows the enlarged structural diagram;

[0016] Figure 3 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the movable tube structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the fixed structure of the utility model.

[0020] In the figure: 1. outer shell; 2. top cover; 3. partition; 31. circulation pipe; 4. fixing bracket; 5. fixing hole; 6. mounting bracket; 61. square hole; 62. threaded hole; 63. square column; 64. long screw; 65. limiting ring; 66. hexagonal bolt; 7. filter cartridge; 8. limiting cylinder; 9. movable tube; 91. horizontal hole; 92. anti-falling block; 10. air bag; 11. sealing sleeve; 12. orifice plate; 13. sealing rod; 14. support spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 - Figure 6 The bottom of the filter bag 7 is fixed with a filter cartridge 7, and the bottom of the filter bag 7 is fixed with a limit cylinder 8. The inner wall of the limit cylinder 8 is fixed with a movable tube 9. The outer edge of the movable tube 9 is provided with a transverse hole 91. The outer edge of the movable tube 9 is fixed with an anti-falling block 92. The anti-falling block 92 is used to prevent the movable tube 9 from falling off when there is no sewage in the sewage storage tank. The anti-falling block 92 prevents the movable tube 9 from falling off, so that the movable tube 9 will not fall off from the limit cylinder 8, thereby improving the stability of the device. An air bag 10 is installed at the bottom of the movable tube 9. Through the setting of the air bag 10, the air bag 10 can float on the water, so that the air bag 10 can seal the circulation tube 31. At the same time, the air bag 10 can be changed from a spherical shape to a strip shape, so that the air bag 10 is easy to take out for cleaning.

[0023] In a preferred embodiment, the inner wall of the top of the movable tube 9 is fixedly equipped with a sealing sleeve 11, the inner wall of the sealing sleeve 11 is fixedly equipped with a perforated plate 12, the inner wall of the perforated plate 12 is slidably connected to a sealing rod 13, and the outer edge of the sealing rod 13 is movably sleeved with a support spring 14. When there is air in the airbag 10, the bottom of the sealing rod 13 will seal the bottom of the sealing sleeve 11, and the airbag 10 will not leak.

[0024] In a preferred embodiment, a mounting bracket 6 is fixedly mounted on the top of the filter cartridge 7, a threaded hole 62 is provided on the outer edge of the left end of the mounting bracket 6, and a long screw 64 is threadedly connected to the inner wall of the threaded hole 62. The long screw 64 is rotated so that the long screw 64 can enter the horizontal hole 91, so that the movable tube 9 and the air bag 10 can be removed when the filter cartridge 7 is taken out.

[0025] In a preferred embodiment, the outer edge of the left end of the mounting bracket 6 is fixedly assembled with a limit ring 65, and the outer edge of the limit ring 65 is movably sleeved with a hexagonal bolt 66, which is threadedly connected to the long screw 64. A mounting bracket 6 is provided on both sides of the transverse hole 91. By rotating the hexagonal bolt 66, the long screw 64 can be pushed to move left and right. When the long screw 64 moves to the left, it is used to remove the filter cartridge 7, and when the long screw 64 moves to the right, it is used to fix the filter cartridge 7.

[0026] In a preferred embodiment, a square hole 61 is provided on the outer edge of the right end of the mounting bracket 6, and a square column 63 is provided on the end of the long screw 64 away from the movable tube 9. The square column 63 is slidably connected to the square hole 61. By using the square column 63 and the square hole 61 in conjunction with each other, when the hexagonal bolt 66 rotates, it cannot drive the square column 63 and the long screw 64 to rotate. When the hexagonal bolt 66 rotates, it can only move the long screw 64, thereby improving the rationality of the device.

[0027] In a preferred embodiment, a fixing bracket 4 is fixedly assembled on the inner wall of the outer shell 1, and a fixing hole 5 is opened on the outer edge of the top of the fixing bracket 4. When the hexagonal bolt 66 rotates and drives the long screw 64 to move toward the fixing hole 5, the square column 63 on the long screw 64 gradually enters the fixing hole 5, and the filter cartridge 7 can be fixed at this time.

[0028] Working principle: when the tank is full of sewage, the airbag 10 and the movable tube 9 are pushed upward, and the airbag 10 blocks the circulation tube 31. When the dirt on the airbag 10 needs to be cleaned, the sealing rod 13 is pressed downward to change the bottom of the sealing sleeve 11 from a sealed state to a connected state. At this time, the gas in the airbag 10 can leak out from the sealing sleeve 11. At this time, there is no gas in the airbag 10. Then the hexagonal bolt 66 is rotated to rotate the hexagonal bolt 66 to drive the long screw 64 to move. Gradually, the square column 63 is detached from the fixing hole 5, and the long screw 64 enters the horizontal hole 91 on the movable tube 9. Then the filter cartridge 7 is lifted upward. At this time, the airbag 10 can be taken out for cleaning.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum anti-overflow valve structure for a sewage suction truck, comprising an outer shell (1), characterized in that: The top of the outer shell (1) is provided with a top cover (2), the inner wall of the outer shell (1) is fixedly equipped with a partition (3), the bottom of the partition (3) is fixedly equipped with a circulation tube (31), the top of the circulation tube (31) is provided with a filter cartridge (7), the bottom of the filter cartridge (7) is fixedly equipped with a limiting cartridge (8), the inner wall of the limiting cartridge (8) is fixedly equipped with a movable tube (9), the outer edge of the movable tube (9) is provided with a transverse hole (91), the outer edge of the movable tube (9) is fixedly equipped with an anti-dropping block (92), and the bottom of the movable tube (9) is installed with an air bag (10).

2. The vacuum anti-overflow valve structure of a sewage suction truck according to claim 1, characterized in that: The inner wall of the top of the movable tube (9) is fixedly equipped with a sealing sleeve (11), the inner wall of the sealing sleeve (11) is fixedly equipped with a perforated plate (12), the inner wall of the perforated plate (12) is slidably connected to a sealing rod (13), and the outer edge of the sealing rod (13) is movably sleeved with a support spring (14).

3. The vacuum anti-overflow valve structure of a sewage suction truck according to claim 1, characterized in that: A mounting bracket (6) is fixedly mounted on the top of the filter cartridge (7), a threaded hole (62) is provided on the outer edge of the left end of the mounting bracket (6), and a long screw (64) is threadedly connected to the inner wall of the threaded hole (62).

4. The vacuum anti-overflow valve structure of a sewage suction truck according to claim 3, characterized in that: The outer edge of the left end of the mounting bracket (6) is fixedly assembled with a limit ring (65), and the outer edge of the limit ring (65) is movably sleeved with a hexagonal bolt (66), and the hexagonal bolt (66) is threadedly connected to the long screw rod (64). Both sides of the transverse hole (91) are provided with mounting brackets (6).

5. The vacuum anti-overflow valve structure of a sewage suction truck according to claim 3, characterized in that: A square hole (61) is provided on the outer edge of the right end of the mounting bracket (6), and a square column (63) is provided on the end of the long screw (64) away from the movable tube (9), and the square column (63) is slidably connected to the square hole (61).

6. The vacuum anti-overflow valve structure of a sewage suction truck according to claim 1, characterized in that: A fixing bracket (4) is fixedly mounted on the inner wall of the outer shell (1), and a fixing hole (5) is provided on the outer edge of the top of the fixing bracket (4).

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