Mud scraping device for sewage treatment

Abstract

According to the technical scheme, the sludge scraping device for sewage treatment is characterized in that the sludge scraping device comprises a rotating arm installed in a pool body, and a sludge scraping assembly is arranged on the lower portion of the rotating arm and used for scraping sludge at the bottom of the pool body; the mud scraping assembly comprises a mounting base, a first scraping plate and a second scraping plate, the mounting base is mounted on the lower portion of the rotating arm, and the first scraping plate and the second scraping plate are both mounted on the mounting base; and the lower ends of the scraper I and the scraper II are propped against the bottom of the tank body. The mud scraping device can stably abut against the bottom of a pool, and the stable and reliable mud scraping effect is kept.

Description

Technical Field

[0001] The utility model relates to sewage treatment equipment, and more specifically, to a sludge scraping device for sewage treatment. Background Art

[0002] A sludge scraper is a device for removing sludge from sewage. During sewage treatment, the sewage is discharged into a large-diameter circular sedimentation tank. The sludge impurities in the sewage will settle to the bottom of the tank body, forming a sludge layer at the bottom layer. Through the operation of the sludge scraping device, the scraping arm drives the sludge scraping assembly to rotate. The scraper at the lower part of the sludge scraping assembly will press against the bottom of the tank body. Then, through gradual rotation, the scraper can converge the sludge at the bottom of the tank body towards the middle, thereby playing the role of scraping sludge.

[0003] During the sludge scraping process, the lower part of the scraper will maintain a state of pressing against the bottom of the tank, and can scrape the sludge at the bottom of the tank. Due to the certain frictional effect between the lower part of the scraper and the bottom of the tank, the bottom of the scraper will be worn to a certain extent. As the sludge scraper continues to work, the contact and fitting effect between the bottom of the scraper and the surface of the bottom of the tank will gradually deteriorate, resulting in the inability to fully fit with the bottom of the tank, and thus the sludge scraping effect is unstable.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above problems and provide a sludge scraping device for sewage treatment, which can stably abut against the bottom of the tank and maintain a stable and reliable sludge scraping effect.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A sludge scraping device for sewage treatment includes a rotating arm installed in the tank body. A sludge scraping assembly is arranged at the lower part of the rotating arm, and the sludge scraping assembly is used for scraping sludge at the bottom of the tank body; the sludge scraping assembly includes a mounting seat, a first scraper and a second scraper. The mounting seat is installed at the lower part of the rotating arm, and both the first scraper and the second scraper are installed on the mounting seat; the first scraper and the second scraper are installed in parallel at intervals, and the lower ends thereof abut against the bottom of the tank body.

[0007] The utility model is further arranged such that a first installation groove is formed at the lower part of the mounting seat, the upper part of the first scraper is installed in the first installation groove, and the lower part extends out of the first installation groove.

[0008] The utility model is further arranged such that a screw rod is fixedly connected to the upper part of the first scraper. The screw rod passes through the side wall of the first installation groove and is fixed by a nut.

[0009] The present utility model is further configured such that a through groove is formed in the side wall of the first mounting groove, and the screw rod extends through the through groove; the through groove runs vertically, has a width adapted to the screw rod, and can slide up and down relative to the screw rod for adjustment.

[0010] The present utility model is further configured such that a second mounting groove is formed in the lower part of the mounting base, the upper part of the second scraper is mounted in the second mounting groove, and the lower part extends out of the second mounting groove; the second scraper can be elastically adjusted up and down relative to the mounting base.

[0011] The present utility model is further configured such that a vertically running sliding groove is formed in the second mounting groove, a sliding seat is fixedly connected to the upper part of the second scraper, and the sliding seat is slidably engaged with the sliding groove for guiding the up and down sliding of the second scraper.

[0012] The present utility model is further configured such that a spring is arranged in the second mounting groove, and the spring elastically presses against the upper part of the sliding seat for applying a downward elastic force to the second scraper.

[0013] The present utility model is further configured such that an adjustment groove running vertically is formed in the outer wall of the second mounting groove, and a guiding block is slidably connected in the adjustment groove; one end of the guiding block extends into the mounting groove and is fixedly connected to the second scraper.

[0014] The present utility model is further configured such that the pool body has a circular structure, and a sludge discharge port is arranged in the middle of the bottom of the pool body.

[0015] The present utility model is further configured such that the middle of the rotating arm is rotatably connected to the middle position of the pool body through a rotating shaft, and the two ends of the rotating arm extend towards both sides of the pool body; a plurality of groups of sludge scraping assemblies are arranged on the lower parts of both sides of the rotating arm; the sludge scraping assemblies are all inclined for scraping sludge from the outer peripheral direction of the pool body towards the middle.

[0016] In summary, the present utility model has the following beneficial effects:

[0017] Two scrapers, namely the first scraper and the second scraper, are arranged at the lower part of the sludge scraping assembly, and two close sludge scraping structures can be formed at the bottom of the pool. Through mutual cooperation and compensation, the stability of the sludge scraping effect can be ensured; by adopting the second scraper that can be elastically lifted and lowered, under the action of the spring, the second scraper can elastically extend downward to ensure that the second scraper can always be in contact with the bottom of the pool; as the lower end of the second scraper wears, the second scraper can gradually extend upward under the action of the spring to compensate for the wear amount, thereby ensuring the stability of the sludge scraping contact between the scraper and the bottom of the pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a sludge scraping device for sewage treatment according to the present utility model;

[0019] Figure 2This is a schematic structural diagram of the sludge scraping assembly of the present utility model.

[0020] Reference numerals: 1, pool body; 100, pool bottom; 2, sludge discharge port; 3, rotating arm; 4, sludge scraping assembly; 5, mounting seat; 6, first mounting groove; 7, first scraper; 8, through groove; 9, screw; 10, nut; 11, second mounting groove; 12, second scraper; 13, sliding seat; 14, sliding groove; 15, spring; 16, adjustment groove; 17, guide block. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] This embodiment also discloses a sludge scraping device for sewage treatment, as Figure 1-2 shown, which includes a rotating arm 3 installed in the pool body 1, and a sludge scraping assembly 4 is installed at the lower part of the rotating arm 3; the rotating arm 3 is driven by a motor to rotate, and the sludge scraping assembly 4 at the lower part of the rotating arm 3 abuts against the bottom of the pool body 1, so that the sludge sediment deposited at the bottom of the pool body 1 can be scraped by the sludge scraping assembly 4.

[0023] As Figure 1 shown, the pool body 1 has a circular structure, and a sludge discharge port 2 is provided in the middle of the bottom of the pool body 1. The middle of the rotating arm 3 is rotationally connected to the middle position of the pool body 1 through a rotating shaft, and both ends of the rotating arm 3 extend to both sides of the pool body 1. A plurality of groups of sludge scraping assemblies 4 are provided on both sides of the lower part of the rotating arm 3, and the sludge scraping assemblies 4 are all inclined. During the rotation of the rotating arm 3, the sludge scraping assemblies 4 can scrape the sludge from the outer circumference direction of the pool body 1 towards the middle, push the sludge in the outer circumference direction towards the middle direction, and through the cooperation of multiple groups of sludge scraping assemblies 4, the sludge scraping treatment can be realized, and the sediment sludge in the pool body 1 can be effectively separated.

[0024] As Figure 2 shown, the sludge scraping assembly 4 includes a mounting seat 5, a first scraper 7 and a second scraper 12. Among them, the mounting seat 5 plays a supporting role and is installed at the lower part of the rotating arm 3. The first scraper 7 and the second scraper 12 are both installed on the mounting seat 5, and the lower ends of the first scraper 7 and the second scraper 12 abut against the pool bottom 100 of the pool body 1, playing a role in scraping the pool bottom 100. Moreover, in the same group of sludge scraping assemblies 4, the first scraper 7 and the second scraper 12 are installed in parallel at intervals, and can form a two-way sludge scraping structure during the sludge scraping process, so as to achieve a double sludge scraping effect.

[0025] During the sludge scraping process, the first scraper 7 and the second scraper 12 successively pass through the bottom of the tank body 1, which can form the function of two consecutive sludge scraping processes. The two scrapers compensate and cooperate with each other, so as to maintain a stable sludge scraping effect during the sludge scraping process.

[0026] A first installation groove 6 is provided at the lower part of the mounting seat 5. The width dimension of the first installation groove 6 is mutually adapted to the first scraper 7. The upper part of the first scraper 7 is installed in the first installation groove 6, and the lower part of the first scraper 7 extends out of the first installation groove 6. During operation, the lower part of the first scraper 7 abuts against the bottom of the tank body 1 to play a role in scraping sludge.

[0027] A screw rod 9 is fixedly connected to the upper part of the first scraper 7. The screw rod 9 is arranged horizontally, passes through the side wall of the first installation groove 6, and is tightened and fixed by a nut 10.

[0028] Specifically, a through groove 8 can be provided in the side wall of the first installation groove 6. The through groove 8 is a waist-shaped groove extending in the up and down direction, and its width is adapted to the screw rod 9. During installation, the screw rod 9 passes through the through groove 8 and extends outside the mounting seat 5, and then is tightened and fixed by a bolt. During adjustment, the overall height of the first scraper 7 can be adjusted by adjusting the first scraper 7 upwards, so as to be mutually adapted to the bottom surface of the tank body 1. The cooperation between the screw rod 9 and the through groove 8 can guide and adapt the position of the first scraper 7 to maintain the adjustment stability of the first scraper 7.

[0029] Furthermore, a second installation groove 11 is also provided at the lower part of the mounting seat 5. The upper part of the second scraper 12 is installed in the second installation groove 11. The lower part of the second scraper 12 extends out of the second installation groove 11, faces downwards and abuts against the bottom of the pool 100. The second scraper 12 can be adjusted up and down relative to the mounting seat 5. Through the elastic pressure of the spring 15, a large pressing force can be maintained between the second scraper 12 and the tank body 1, and it can adapt to the position of the bottom of the pool 100 for self-adaptive adjustment to ensure that a stable fitting state is always maintained between the second scraper 12 and the bottom of the pool 100.

[0030] Specifically, a sliding groove 14 is provided on the inner wall of the second installation groove 11. The sliding groove 14 extends in the up and down direction; a sliding seat 13 is fixedly connected to the upper part of the second scraper 12. The sliding seat 13 faces the side of the sliding groove 14, and a convex structure adapted to the sliding groove 14 is provided on the sliding seat 13, so that a sliding connection structure is formed between the sliding groove 14 and the sliding seat 13. Through the mutual sliding adaptation between the sliding seat 13 and the sliding groove 14, the up and down sliding of the second scraper 12 can be guided to keep the second scraper 12 moving smoothly up and down.

[0031] A spring 15 is installed in the second installation groove 11. The spring 15 is located at the upper position of the sliding seat 13, and its upper and lower ends respectively press against the inner wall of the upper side of the second installation groove 11 and the upper surface of the sliding seat 13. Through the spring 15, it can elastically press against the upper part of the sliding seat 13, and can apply a downward elastic force to the second scraper 12, so that the second scraper 12 can abut against the bottom of the pool 100 downward, and keep the lower edge of the second scraper 12 in a stable and fitting state with the bottom of the pool 100.

[0032] Furthermore, an adjustment groove 16 running up and down can be opened on the outer wall of the second installation groove 11, and a guide block 17 is slidably connected in the adjustment groove 16. One end of the guide block 17 extends into the installation groove and is fixedly connected to the second scraper 12. A sliding guiding effect can be formed between the adjustment groove 16 and the guide block 17, so as to keep the smooth and stable lifting movement of the second scraper 12. Moreover, through the mutual adaptation of the guide block 17 and the adjustment groove 16, the up and down sliding formation of the second scraper 12 can also be limited, so as to prevent the second scraper 12 from completely disengaging from the second installation groove 11 and keep the stability of the installation structure.

[0033] Specifically, the sliding seat 13 and the guide block 17 are respectively arranged on both sides of the second scraper 12, so as to form a sliding guiding structure on both the front and back sides of the second scraper 12, and then maintain the smoothness of the lifting movement of the second scraper 12.

[0034] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A sludge scraper device for sewage treatment, characterized in that: The invention comprises a rotating arm (3) installed in a pool body (1), a scraper assembly (4) is arranged at the lower part of the rotating arm (3), and the scraper assembly (4) is used to scrape the mud from the bottom of the pool body (1); the scraper assembly (4) comprises a mounting seat (5), a scraper blade 1 (7) and a scraper blade 2 (12); the mounting seat (5) is installed at the lower part of the rotating arm (3), and the scraper blade 1 (7) and the scraper blade 2 (12) are both installed on the mounting seat (5); the scraper blade 1 (7) and the scraper blade 2 (12) are installed in parallel and at intervals, and the lower ends thereof are against the pool bottom (100) of the pool body (1); The lower part of the mounting seat (5) is provided with a mounting groove (6), the upper part of the scraper (7) is mounted in the mounting groove (6), and the lower part extends out of the mounting groove (6); The lower part of the mounting seat (5) is provided with a second mounting groove (11), the upper part of the second scraper (12) is mounted in the second mounting groove (11), and the lower part extends out of the second mounting groove (11); the second scraper (12) can be elastically adjusted up and down relative to the mounting seat (5); The second installation groove (11) is provided with a sliding groove (14) extending upward and downward, and the upper part of the second scraper (12) is fixedly connected with a sliding seat (13), and the sliding seat (13) is slidably matched with the sliding groove (14) to guide the second scraper (12) to slide upward and downward; A spring (15) is arranged in the second installation groove (11), and the spring (15) elastically presses against the upper part of the slide seat (13) to apply a downward elastic force to the second scraper (12).

2. A sludge scraper device for sewage treatment according to claim 1, characterized in that: The upper part of the scraper plate 1 (7) is fixedly connected with a screw rod (9), which passes through the side wall of the mounting groove 1 (6) and is fixed by a nut (10).

3. A sludge scraper device for sewage treatment according to claim 2, characterized in that: The side wall of the first installation groove (6) is provided with a through groove (8) for the screw rod (9) to extend out of. The through groove (8) extends upward and downward, has a width matching that of the screw rod (9), and can be slidably adjusted upward and downward relative to the screw rod (9).

4. A sludge scraper device for sewage treatment according to claim 1, characterized in that: The outer wall of the second installation groove (11) is provided with an adjustment groove (16) extending upward and downward, and a guide block (17) is slidably connected in the adjustment groove (16); one end of the guide block (17) extends into the installation groove and is fixedly connected to the second scraper (12).

5. A sludge scraper device for sewage treatment according to claim 1, characterized in that: The pool body (1) is of a circular structure, and a mud discharge port (2) is provided in the middle of the bottom of the pool body (1).

6. A sludge scraper device for sewage treatment according to claim 5, characterized in that: The middle of the rotating arm (3) is rotatably connected to the middle position of the pool body (1) via a rotating shaft, and both ends of the rotating arm (3) extend to both sides of the pool body (1); a plurality of groups of mud scraping assemblies (4) are arranged at the lower part of both sides of the rotating arm (3); the mud scraping assemblies (4) are arranged in an inclined manner and are used to scrape mud from the peripheral direction of the pool body (1) to the middle.

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