Solid-liquid separation device for domestic sewage treatment

Abstract

The utility model relates to the technical field of domestic sewage treatment, and discloses a solid-liquid separation device for domestic sewage treatment, which comprises a sewage pool and a separation component, a water inlet pipe is arranged at one end of the sewage pool, the separation component is arranged at one end of the sewage pool close to the water inlet pipe, and a material collecting auxiliary roller is arranged on the left side of the separation component. A plurality of mounting seats are distributed on the material collecting auxiliary roller along the circumference, a plurality of mounting positions are arranged on the plurality of mounting seats, and material collecting claws are mounted on the plurality of mounting positions; a material collecting conveying belt is arranged below the material collecting auxiliary roller, and a water return groove is formed below the material collecting conveying belt and communicated with the sewage pool. A water outlet pipe is arranged at one end of the sewage pool away from the water inlet pipe; a secondary filtering device is arranged on the inner side wall of one end of the sewage pool close to the water outlet pipe; according to the utility model, solids which are not easy to fall off on the separation device can be automatically collected, the separation effect of the separation device is kept, the labor cost and time cost for manually cleaning the separation device are reduced, and the separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of domestic sewage treatment, in particular to a solid-liquid separation device for domestic sewage treatment. Background Art

[0002] Domestic sewage refers to sewage generated in daily life, including wastewater discharged from households, schools, hospitals, commercial facilities and other places. In addition to contaminated liquids, domestic sewage may contain larger solids such as food residues, grease, paper fragments, toilet paper, sanitary napkins, cotton swabs and clothing fibers. In order to save water resources and prevent water pollution, disease transmission and ecosystem damage caused by the direct discharge of untreated sewage, we need to treat domestic sewage harmlessly. The primary treatment of domestic sewage requires separating larger solids in domestic sewage, which requires a solid-liquid separation device for domestic sewage treatment.

[0003] For example, patent document CN213680063U discloses an initial solid-liquid separation system for domestic sewage, comprising an upstream flow channel and a downstream flow channel interconnected for sewage circulation, the upstream flow channel having a slope structure connected to the downstream flow channel, and a circulating separation device for filtering and removing solid waste in sewage is installed on the slope structure; the lower end of the circulating separation device is close to the bottom of the slope structure, and the upper end of the circulating separation device is higher than the downstream flow channel by a vertical distance of not less than two meters; a garbage conveying device for collecting solid waste removed after filtration by the circulating separation device is provided directly below the upper end of the circulating separation device; however, this prior art still has many shortcomings, for example: the hooks on the circulating separation device that are conducive to solid-liquid separation are difficult to fall off the separated solids, and if it is operated for a long time, the circulating separation device will weaken or even lose its separation effect. Utility Model Content

[0004] The purpose of the utility model is to provide a solid-liquid separation device for domestic sewage treatment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid-liquid separation device for domestic sewage treatment, comprising a sewage tank and a separation component, wherein a water inlet pipe is provided at one end of the sewage tank, the separation component is provided at the end of the sewage tank close to the water inlet pipe, an aggregate auxiliary roller is provided on the left side of the separation component, a plurality of mounting seats are distributed along the circumference of the aggregate auxiliary roller, a plurality of mounting seats are provided with a plurality of mounting positions, and a plurality of mounting positions are provided with aggregate claws; a aggregate conveyor belt is provided below the aggregate conveyor belt, a return water trough is provided below the aggregate conveyor belt, and the return water trough is connected to the sewage tank; a water outlet pipe is provided at the end of the sewage tank away from the water inlet pipe; a secondary filtering device is provided on the inner side wall of the sewage tank close to the end of the outlet pipe.

[0006] As a further improvement to the above solution, the mounting position includes several mounting plates, several mounting plates are provided with mounting holes, several mounting holes are commonly sleeved with fixed shafts, and a limit plate is provided between two adjacent mounting plates.

[0007] As a further improvement to the above solution, a through hole cooperating with a fixed shaft is provided at the tail end of the material collecting claw, and a vibration block is slidably installed in the internal cavity of the material collecting claw.

[0008] As a further improvement to the above solution, the separation assembly includes a first active roller and a first driven roller, and the first active roller and the first driven roller are jointly sleeved with a separation grid, and the separation grid includes a thorn plate and a hinge shaft.

[0009] As a further improvement to the above solution, the collecting conveyor belt includes a second active roller and a second driven roller, and a mesh belt is commonly sleeved on the second active roller and the second driven roller, and baffles are provided on both sides of the mesh belt.

[0010] As a further improvement to the above solution, the secondary filtering device includes a plurality of filter screens and a plurality of mounting frames, and each of the plurality of mounting frames is provided with two mounting slots.

[0011] As a further improvement to the above solution, the water inlet of the outlet pipe is arranged downward, the water inlet of the outlet pipe is close to the bottom of the sewage pool, and a filter is installed at the water inlet of the outlet pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model sets a collection auxiliary roller on the left side of the separation component, and a plurality of mounting seats are distributed along the circumference of the collection auxiliary roller. A plurality of mounting seats are provided with a plurality of mounting positions, and the mounting positions include a plurality of mounting plates. A mounting position is formed between two adjacent mounting plates. A collection claw is installed on a plurality of mounting positions. A plurality of collection claws on a mounting seat jointly form a collection comb that cooperates with the thorn plate. A through hole that cooperates with the fixed shaft is opened at the tail end of the collection claw. A plurality of mounting plates are provided with mounting holes. A fixed shaft is jointly sleeved in the plurality of mounting holes and the plurality of through holes. The shape and size of the solids in the water are adjusted to control the installation quantity and installation density of the aggregate claws. A limit plate is provided between two adjacent installation plates and the limit plate is installed at the lower end of the aggregate claw. When the separation component is performing separation work, the aggregate auxiliary roller and the first active roller shaft rotate in the same direction. Under the action of the limit plate, the aggregate claw can aggregate the solids on the separation component when it is close to the separation component, and naturally droops when it rotates away from one end of the separation component, which is convenient for throwing out the solids, and can keep the aggregate claw in a vertical downward state for a longer time, which is convenient for solid shedding and self-cleaning.

[0014] 2. The utility model opens a cavity inside the aggregate claw and slides a vibration block in the cavity. When the aggregate auxiliary roller drives the aggregate claw to rotate and picks up the solids on the separation component, it continues to rotate upward. The vibration block slides toward the root of the aggregate claw under the action of gravity, and the aggregate auxiliary roller continues to rotate. When the aggregate claw passes the highest point of the aggregate auxiliary roller, it swings downward rapidly under the influence of gravity. At the same time, the vibration block slides rapidly and collides with the inner wall of the aggregate claw head to generate vibration, further expanding the swinging and falling effect of the aggregate claw, making it easier for the solids on the aggregate claw to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the separation component in the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation of the thorn plate of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the aggregate auxiliary roller in the utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting base in the present utility model;

[0022] Figure 7 It is a cross-sectional view of the aggregate claw in the utility model;

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the aggregate conveyor belt in the utility model;

[0024] Figure 9 This is a partial enlarged view of the secondary filtering device in the utility model.

[0025] In the figure: 1. Sewage tank; 2. Separation assembly; 21. First active roller; 22. First driven roller; 23. Separation grid; 231. Barbed plate; 232. Articulated shaft; 3. Water inlet pipe; 4. Auxiliary roller for aggregate; 41. Mounting seat; 42. Mounting position; 421. Mounting plate; 422. Mounting hole; 423. Fixed shaft; 43. Aggregate claw; 431. Through hole; 432. Vibrating block; 44. Limiting plate; 5. Aggregate conveyor belt; 51. Return water trough; 52. Second active roller; 53. Second driven roller; 54. Screen belt; 55. Baffle; 6. Outlet pipe; 7. Secondary filtration device; 71. Filter screen; 72. Mounting frame. DETAILED DESCRIPTION

[0026] 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. Example 1

[0027] A solid-liquid separation device for domestic sewage treatment, such as Figures 1 to 4 As shown, it includes a sewage pool 1 and a separation component 2. A water inlet pipe 3 is provided at one end of the sewage pool 1. The water inlet pipe 3 is connected to a water pump to extract domestic sewage to be treated. A separation component 2 is provided at one end of the sewage pool 1 close to the water inlet pipe 3. The separation component 2 includes a first active roller 21 and a first driven roller 22. A pulley is connected to one end of the first active roller 21, and the pulley is connected to the power device through a belt. A separation grid 23 is jointly provided on the first active roller 21 and the first driven roller 22. The separation grid 23 includes a barbed plate 231 and a hinge shaft 232. The hinge shaft 232 of different lengths can be replaced according to separation needs, or a flat plate without barbs can be used to control the density of the barbed plates.

[0028] like Figures 3 to 7 As shown, an aggregate auxiliary roller 4 is provided on the left side of the separation component 2, and a plurality of mounting seats 41 are distributed along the circumference of the aggregate auxiliary roller 4, and a plurality of mounting seats 41 are provided with a plurality of mounting positions 42, and the mounting positions 42 include a plurality of mounting plates 421, and a mounting position 42 is formed between two adjacent mounting plates 421, and aggregate claws 43 are installed on a plurality of mounting positions 42, and a plurality of aggregate claws 43 on a mounting seat 41 jointly form an aggregate comb that cooperates with the barbed plate 231, and a through hole 431 that cooperates with the fixed shaft 423 is provided at the tail end of the aggregate claw 43, and a plurality of mounting plates 421 are provided with mounting holes 422, and a fixed shaft 423 is jointly sleeved in the plurality of mounting holes 422 and the plurality of through holes 431, which can be adjusted according to the shape and size of the solids in the sewage to control the installation quantity and installation density of the aggregate claws 43.

[0029] like Figures 1 to 9 As shown, a limit plate 44 is provided between two adjacent mounting plates 421, and the limit plate 44 is installed at the lower end of the collecting claw 43. When the separation component 2 performs separation work, the collecting auxiliary roller 4 rotates in the same direction as the first active roller shaft 21, and the collecting claw 43 collects the solids on the separation component 4 under the action of the limit plate 44; a collecting conveyor belt 5 is provided below the collecting auxiliary roller 4, and the collecting conveyor belt 5 includes a second active roller shaft 52 and a second driven roller shaft 53. One end of the second active roller shaft 52 is connected to a pulley, and the pulley is connected to the power device through a belt. The second active roller shaft 52 A mesh belt 54 is provided on the outside of the second driven roller 53. The mesh conveyor belt can further drain water when conveying the separated solids, thereby improving the solid-liquid separation effect. Baffles 55 are provided on both sides of the mesh conveyor belt 54. The baffles 55 prevent the separated solids from falling into the sewage, thereby increasing the workload of the secondary separation device and improving the work efficiency. A return water trough 51 is provided under the aggregate conveyor belt 5. The return water trough 51 is connected to the sewage pool 1. The mesh belt 54 re-enters the sewage pool 1 through the return water trough 51 from the sewage on the separated solids, thereby avoiding sewage leakage and pollution while avoiding sewage loss.

[0030] like Figure 1 、 Figure 2 and Figure 9 As shown, an outlet pipe 6 is provided at one end of the sewage pool 1 away from the water inlet pipe 3, and the water inlet of the outlet pipe 6 is set downward. The water inlet of the outlet pipe 6 is close to the bottom of the sewage pool 1, and directly absorbs the sewage at the bottom of the sewage pool to prevent some fine solids with a density greater than water from settling at the bottom of the pool and causing solid accumulation at the bottom of the pool, affecting the separation effect. A filter is installed at the water inlet of the outlet pipe 6, and the filter is set according to the requirements of subsequent treatment equipment to prevent some solids in the sewage from damaging the subsequent treatment equipment; a secondary separation device 7 is provided on the inner wall of the sewage pool 1 near one end of the outlet pipe 6, and the secondary separation device 7 includes a plurality of filter screens 71 and a plurality of mounting frames 72. The plurality of mounting frames 72 are provided with two mounting slots for replacing the filter screen. A new filter screen 71 can be inserted and then the old filter screen 71 can be taken out. The replacement process does not stop the machine, which saves time.

[0031] When Example 1 is working, sewage is pumped into the sewage pool 1 through the water inlet pipe 3, the power device is started to drive the first active roller 21 to rotate and the collection auxiliary roller 4 to rotate, and the collection conveyor belt 5 is started at the same time; the first active roller 21 drives the separation grid 23 to move upward continuously, the barbed plates 231 on the separation grid 23 hook the solids in the sewage and drive them to move upward, the collection auxiliary roller 4 rotates in the same direction as the first active roller 21, and when the solids in the sewage are brought to a high place by the barbed plates 231, the collection claws 43 on the collection auxiliary roller 4 remove the solids hooked on the barbed plates, and the collection auxiliary roller 4 drives the collection claws 43 to continue to rotate. When the collection claws 43 rotate to the side away from the separation component 2, they fall under the influence of gravity and throw the collected solids onto the collection conveyor belt 5. The collection conveyor belt 5 continues to drain the separated solids during the conveying process, and countless solids return to the sewage pool 1 through the reflux trough 51. The solids are collected and further processed to achieve preliminary solid-liquid separation of domestic sewage. Example 2

[0032] Example 2 is based on Example 1, as Figures 5 to 7 As shown, a vibration block 432 is slidably installed in the internal cavity of the aggregate claw 43. When the aggregate auxiliary roller 4 drives the aggregate claw 43 to collect the solid aggregates on the separation component 2, it continues to rotate upward. The vibration block 432 slides to the root of the aggregate claw under the action of gravity. The aggregate auxiliary roller 4 continues to rotate, and the aggregate claw 43 swings downward under the action of gravity. At the same time, the vibration block 432 slides to the head of the aggregate claw 43 to help the solids on the aggregate claw fall off.

[0033] When Example 2 is working, the aggregate claw 43 is restricted by the limiting plate 44 to a position close to the separation component 2 and remains horizontal. The aggregate claw 43 rotates upward with the aggregate auxiliary roller 4 to pick up the solids on the thorn plate, and the aggregate claw 43 continues to move upward. The vibration block 432 slides toward the root of the aggregate claw 43 under the action of gravity. After the aggregate claw 43 passes over the aggregate auxiliary roller, it loses the restriction of the limiting plate 44 and rotates downward. At the same time, the vibration block 432 slides toward the top of the aggregate claw 43, hits the inner wall of the top of the aggregate claw 43 to generate vibration, and throws out the solids attached to the aggregate claw 43.

[0034] 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 solid-liquid separation device for treating domestic sewage, comprising a sewage tank (1) and a separation component (2), characterized in that: A water inlet pipe (3) is provided at one end of the sewage pool (1); the separation assembly (2) is provided at one end of the sewage pool (1) close to the water inlet pipe (3); a collection auxiliary roller (4) is provided on the left side of the separation assembly (2); a plurality of mounting seats (41) are distributed along the circumference of the collection auxiliary roller (4); a plurality of mounting positions (42) are provided on each of the mounting seats (41); and a collection claw (43) is installed on each of the mounting positions (42); a collection conveyor belt (5) is provided below the collection conveyor belt (5); a return water trough (51) is provided below the collection conveyor belt (5); and the return water trough (51) is connected to the sewage pool (1); a water outlet pipe (6) is provided at one end of the sewage pool (1) away from the water inlet pipe (3); and a secondary filtering device (7) is provided on the inner side wall of the sewage pool (1) close to the end of the water outlet pipe (6).

2. A solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: The mounting position (42) includes a plurality of mounting plates (421), each of the plurality of mounting plates (421) is provided with a mounting hole (422), a fixed shaft (423) is commonly sleeved in the plurality of mounting holes (422), and a limiting plate (44) is provided between two adjacent mounting plates (421).

3. A solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: A through hole (431) cooperating with the fixed shaft (423) is provided at the tail end of the material collecting claw (43), and a vibration block (432) is slidably mounted in the internal cavity of the material collecting claw (43).

4. A solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: The separation assembly (2) comprises a first active roller shaft (21) and a first driven roller shaft (22); a separation grid (23) is sleeved on the first active roller shaft (21) and the first driven roller shaft (22); the separation grid (23) comprises a thorn plate (231) and a hinge shaft (232).

5. The solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: The collecting conveyor belt (5) comprises a second active roller (52) and a second driven roller (53); a mesh belt (54) is provided on the outside of the second active roller (52) and the second driven roller (53); baffles (55) are provided on both sides of the mesh belt (54).

6. A solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: The secondary filtering device (7) comprises a plurality of filter screens (71) and a plurality of mounting frames (72), and each of the plurality of mounting frames (72) is provided with two mounting slots.

7. The solid-liquid separation device for domestic sewage treatment according to claim 1, characterized in that: The water inlet of the water outlet pipe (6) is arranged downwards, the water inlet of the water outlet pipe (6) is close to the bottom surface of the sewage pool (1), and a filter is installed at the water inlet of the water outlet pipe (6).

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