Water treatment secondary sedimentation tank cleaning device and mud scraper

Abstract

The water treatment secondary sedimentation tank cleaning device comprises a middle dirt scraping device, the middle dirt scraping device comprises a first slag scraping box, one end of the first slag scraping box is fixedly connected with a first collecting hopper, the first collecting hopper is connected with a first dirt suction pipe opening, and the other end of the first slag scraping box is open; first scraping plates are respectively mounted at the end parts of the two side walls, extend outwards in an inclined manner, and are used for scraping dirt and enabling the dirt to enter a first dirt collecting cavity in the first slag scraping box. The first residue scraping box collects attachments or dirt through a first dirt collecting cavity in the first residue scraping box, the first collecting hopper is used for guiding the attachments or the dirt in the first residue scraping box to a first dirt suction pipe opening, and the first scraping plate abuts against the toothed plate and is used for scraping away the attachments or the dirt on the inner side face of the toothed plate. And the bottom wall of the open end of the first slag scraping box is used for scraping attachments or dirt at the bottom of the triangular weir.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment equipment, in particular to a cleaning device and a sludge scraper for a secondary sedimentation tank of water treatment. Background Art

[0002] Currently, scraping of secondary sedimentation tanks is performed on the water surface within the circular triangular weir. Because the weir is formed by toothed plates on both sides, dirt and moss can accumulate on both sides of the plates and at the bottom of the weir. These deposits not only hinder drainage from the weir, but also become bulky when they fall off, disrupting subsequent processes.

[0003] Chinese patent document CN213132043U, published (announcement) date: 2021.05.07, discloses a circular pool automatic cleaner, including a circular pool body, a triangular weir plate coaxially fixed to the upper edge of the pool body, an overflow ring pool covering the triangular weir plate coaxially opened on the upper edge of the pool body, a stirring rack is arranged on the circular pool body along its center, and a spray assembly is fixed on the stirring rack for cleaning the triangular weir plate and the pool wall of the overflow ring pool close to the triangular weir plate. Its characteristics are: this patent document solves the problem in the traditional technology that impurities are easily attached to the triangular weir plate during the overflow of sewage, resulting in uneven water discharge from the triangular weir; and after the sewage overflows from the triangular weir, it flows slowly through the pool wall, causing sludge to be easily deposited on the pool wall, affecting the sewage treatment efficiency; its disadvantage is that: when the impurities are scraped off by the side hanging plate, the hanging impurities only fall directly into the water, thereby increasing the impact on subsequent processes.

[0004] In addition, Chinese patent document CN219722021U, published (announced) date: 2023.09.22, discloses a sewage cleaning device for a secondary sedimentation tank, including a sedimentation outlet trough, a bridge and a sludge scraping mechanism. A plurality of linearly arranged triangular weirs are provided at both ends of the top of the sedimentation outlet trough, and the bridge is provided at the top of the sedimentation outlet trough, and the scraping mechanism is provided at the bottom of the bridge. An adjustment mechanism for adjusting the height of the sludge scraping mechanism is provided in the bridge, and a buffer mechanism is provided in the sludge scraping mechanism. Its characteristics are: the rotation of the sludge scraping mechanism drives the rubber rake teeth to rake up the silt and moss at the bottom of the outlet trough. Through long-term operation, it can effectively remove the silt and blue algae deposited at the bottom of the sedimentation outlet trough, making the water quality of the sedimentation outlet trough clear. Its disadvantage is: it is impossible to collect the silt and moss at the same time when scraping them. Summary of the Invention

[0005] The object of the present invention is to provide a water treatment secondary sedimentation tank cleaning device and a sludge scraper, which can collect the attached matter while scraping off the attached matter in the triangular weir area.

[0006] To achieve the above-mentioned objectives, the present invention provides a water treatment secondary sedimentation tank cleaning device, including an intermediate scraping device, wherein the intermediate scraping device includes a first scraping box, one end of the first scraping box is fixedly connected to a first collecting bucket, the first collecting bucket is connected to a first suction pipe opening, the other end of the first scraping box is open, and first scrapers are respectively installed at the end positions of the two side walls, the first scrapers extend obliquely outward, and the first scrapers are used to scrape off dirt and allow the dirt to enter the first dirt collecting chamber inside the first scraping box.

[0007] A shovel plate is installed on the bottom wall of the other end of the first scraper box.

[0008] The ends of the side walls on both sides of the first scraper box are respectively provided with first mounting parts, the outer side of the first mounting part is provided with a first inclined groove, the inside of the first inclined groove is provided with a first spring, the first scraper is slidably inserted into the first inclined groove and abuts against the first spring.

[0009] At least one first through hole is provided on the inner side of the first mounting portion at a position corresponding to the first inclined groove. After the first limiting rod slides through the first through hole, it is connected and fixed to the first scraper. The first spring is sleeved on the first limiting rod.

[0010] The machine further comprises two outer scraping devices, which are symmetrically arranged on both sides of the middle scraping device. The middle scraping device and the outer scraping devices on both sides are connected to form a whole through a connecting piece. A gap for the tooth plate to pass through is provided between the middle scraping device and the outer scraping devices on both sides. The outer scraping device includes a second scraping box, one end of the second scraping box is fixedly connected to a second collecting bucket, the second collecting bucket is connected to a second suction pipe opening, the other end of the second scraping box is open, and a second scraper is installed on the side wall of one side, the second scraper extends obliquely toward one side of the tooth plate, and the second scraper is used to scrape off the dirt and allow the dirt to enter the second dirt collecting chamber inside the second scraping box.

[0011] The second scraper box is provided with a second mounting portion on the side wall opposite to the second scraper, and the second mounting portion is provided with two second through holes. After the second limiting rod slides into the second through hole, it is connected to the second scraper, and a second spring is mounted on the second limiting rod. One end of the second spring abuts against the second mounting portion, and the other end abuts against the second scraper.

[0012] The two second limiting rods are respectively close to the top wall and the bottom wall of the second scraper box.

[0013] The connecting member includes a support plate, and support blocks are fixedly connected to the lower sides of both ends of the support plate. The support blocks are provided with mounting holes. The middle part of the lower side of the support plate is connected and fixed to the first scraping box of the intermediate scraping device. The second suction pipe port on the second scraping box is inserted into the mounting hole and connected and fixed to the support block.

[0014] A sludge scraper comprises a sludge scraper body. The sludge scraper body is located at a triangular weir and is equipped with a water treatment secondary sedimentation tank cleaning device via a connecting rod.

[0015] Three self-priming sludge pumps and a filter box are installed on the scraper body. The water inlets of the three self-priming sludge pumps are connected to the first suction pipe port on the middle scraping device and the second suction pipe port on the outer scraping device through pipes. The water outlets of the three self-priming sludge pumps are connected to the upper layer of the filter box through pipes. A filter screen is provided in the middle of the filter box, and a drain pipe is provided at the lower layer of the filter box.

[0016] Compared with the prior art, the present invention has the following technical effects: 1. The first scraper box of the present invention collects attachments or dirt through the first internal dirt collecting chamber. The first collecting bucket is used to guide the attachments or dirt in the first scraper box to the first dirt suction pipe port, so that the attachments or dirt collected in the first dirt collecting chamber can be sucked out by the sludge pump. The first scraper is in contact with the tooth plate and is used to scrape off attachments or dirt on the inner side of the tooth plate. The bottom wall of the open end of the first scraper box is used to scrape off attachments or dirt at the bottom of the triangular weir. The scraped attachments or dirt enter the first dirt collecting chamber through the guidance of the first scraper and the bottom wall. The intermediate scraping device is installed in the triangular weir, and the inner sides of the tooth plates on both sides of the triangular weir are cleaned by the first scrapers on both sides, and the bottom wall of the first scraper box cleans the bottom of the triangular weir.

[0017] 2. The present invention also includes two outer scraping devices, symmetrically arranged on either side of the central scraping device. The central scraping device and the outer scraping devices on both sides are connected to form a whole by connectors. A gap is provided between the central scraping device and the outer scraping devices on both sides for the tooth plates to pass through. The central scraping device and the two outer scraping devices can remove and collect debris or dirt attached to the bottom of the triangular weir, the inner side of the tooth plates, and the outer side of the tooth plates.

[0018] 3. The present invention also discloses a sludge scraper, comprising a sludge scraper body, the sludge scraper body being located at a triangular weir and having a water treatment secondary sedimentation tank cleaning device mounted thereon via a connecting rod. By mounting the water treatment secondary sedimentation tank cleaning device of the present application on the sludge scraper body, the triangular weir is cleaned as the sludge scraper body rotates.

[0019] 4. The self-priming sludge pump of the present invention is used to suck out the attachments or dirt removed from the first sewage collecting chamber and the second sewage collecting chamber. The attachments or dirt together with part of the water are discharged into the filter box through the self-priming sludge pump, filtered through the filter mesh in the filter box, and the filtered water enters the lower layer of the filter box and is finally discharged from the drain pipe to the annular ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0021] Figure 1 This is a schematic diagram of the main structure of a water treatment secondary sedimentation tank cleaning device in use.

[0022] Figure 2 The diagram is a top view of the structure of a water treatment secondary sedimentation tank cleaning device in use according to the present invention.

[0023] Figure 3 for Figure 2 Schematic diagram of the AA cross-section structure.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the intermediate scraping device of the present invention.

[0025] Figure 5 for Figure 4 Schematic diagram of the BB cross-section structure.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the outer scraping device of the present invention.

[0027] Figure 7 for Figure 6 Schematic diagram of the CC cross-section structure.

[0028] Figure 8 The present invention is a schematic cross-sectional structural diagram of a water treatment secondary sedimentation tank cleaning device in use.

[0029] Figure 9 Schematic diagram of the structure of the connecting piece of the present invention.

[0030] Figure 10 The figure is a schematic structural diagram of a mud scraper according to the present invention.

[0031] Reference numerals: Triangular weir 10, tooth plate 11, annular ditch 20; Intermediate scraping device 100, first scraping box 110, first collecting chamber 111, first mounting portion 112, first chute 113, first limiting rod 114, first spring 115, first through hole 116, first collecting bucket 120, first suction pipe opening 121, first scraper 130, shovel plate 140, fastener 141; The outer scraping device 200, the second scraping box 210, the second sewage collecting chamber 211, the second mounting portion 212, the second through hole 213, the second limiting rod 214, the second spring 215, the second collecting bucket 220, the second sewage suction pipe 221, and the second scraper 230; Connecting member 300, supporting plate 301, supporting block 302, mounting hole 303, connecting rod 304; Scraper body 400; Self-priming sludge pump 500, filter box 600, filter screen 610, drain pipe 620. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] Example 1: See also Figure 1-5 A water treatment secondary sedimentation tank cleaning device includes an intermediate scraping device 100, which includes a first scraping box 110. One end of the first scraping box 110 is fixedly connected to a first collecting bucket 120, and the first collecting bucket 120 is connected to a first sewage suction pipe port 121. The other end of the first scraping box 110 is open, and first scrapers 130 are respectively installed at the end positions of the two side walls. The first scrapers 130 extend obliquely outward. The first scrapers 130 are used to scrape off dirt and allow the dirt to enter the first sewage collecting chamber 111 inside the first scraping box 110.

[0034] The first scraper box 110 collects debris or dirt through the internal first dirt collection chamber 111. The first collection hopper 120 is used to guide the debris or dirt within the first scraper box 110 to the first dirt suction pipe 121, facilitating suction of the debris or dirt collected in the first dirt collection chamber 111 by a sludge pump. The first scraper 130 abuts against the tooth plate 11 and is used to scrape debris or dirt from the inner side of the tooth plate 11. The bottom wall of the open end of the first scraper box 110 is used to scrape debris or dirt from the bottom of the triangular weir 10. The scraped debris or dirt enters the first dirt collection chamber 111 through the guidance of the first scraper 130 and the bottom wall.

[0035] When using, see Figure 2 、 8 The intermediate scraping device 100 is installed in the triangular weir 10, and the inner sides of the tooth plates 11 on both sides of the triangular weir 10 are cleaned by the first scrapers 130 on both sides, and the bottom wall of the first scraper box 110 cleans the bottom of the triangular weir 10.

[0036] Furthermore, in order to improve the scraping effect of the bottom wall of the first scraper box 110 and prevent the bottom wall of the first scraper box 110 from being worn, a scraping plate 140 is installed on the bottom wall of the open end of the first scraper box 110. The thin scraping plate 140 facilitates the removal of attached matter or dirt, and the scraping plate 140 can be replaced after it is worn.

[0037] Specifically, see Figure 4 The shovel plate 140 is mounted on the end of the open end of the first scraper box 110 through a fastener 141. The shovel plate 140 is a trapezoidal structure that cooperates with the first scrapers 130 on both sides.

[0038] Example 2: On the basis of embodiment 1, the first scraper 130 can be elastically retracted and expanded, thereby being able to adapt to the width change between the tooth plates 11 on both sides.

[0039] For details, see Figure 5 The ends of the side walls of the first scraper box 110 are respectively provided with first mounting portions 112, and first inclined grooves 113 are provided on the outside of the first mounting portions 112. First springs 115 are installed inside the first inclined grooves 113. The first scraper 130 is slidably inserted into the first inclined grooves 113 and abuts against the first springs 115. With the above structure, the first scraper 130 can slide and elastically expand and contract in the first inclined grooves 113 via the first springs 115.

[0040] Furthermore, at least one first through-hole 116 is provided on the inner side of the first mounting portion 112 at a position corresponding to the first slanted groove 113. The first limiting rod 114 slides through the first through-hole 116 and is then fixedly connected to the first scraper 130. The first spring 115 is mounted on the first limiting rod 114. The first limiting rod 114 limits the first scraper 130 to prevent it from falling out of the first slanted groove 113.

[0041] Specifically, one end of the first limiting rod 114 is provided with an external thread, and the other end is provided with a limiting head with a diameter larger than the first inclined groove 113. After the external thread end of the first limiting rod 114 is inserted into the first through hole 116, it is screwed together with the first scraper 130 to be fixed.

[0042] Example 3: On the basis of Example 1 or Example 2, see Figure 2 、 3 , further comprising two outer scraping devices 200, which are symmetrically arranged on either side of the middle scraping device 100. The middle scraping device 100 and the outer scraping devices 200 on both sides are connected to form a whole via connectors 300. A gap is provided between the middle scraping device 100 and the outer scraping devices 200 on both sides for the tooth plates 11 to pass through. By using one middle scraping device 100 and two outer scraping devices 200, it is possible to scrape and collect attached matter or dirt on the bottom of the triangular weir 10, the inner side of the tooth plates 11, and the outer side of the tooth plates 11.

[0043] Specifically, see Figure 6 、 7The outer scraping device 200 includes a second scraping box 210, one end of the second scraping box 210 is fixedly connected to a second collecting bucket 220, the second collecting bucket 220 is connected to a second suction pipe opening 221, the other end of the second scraping box 210 is open, and a second scraper 230 is installed on the side wall of one side, the second scraper 230 extends obliquely toward the side of the tooth plate 11, and the second scraper 230 is used to scrape off the dirt on the outside of the tooth plate and allow the dirt to enter the second dirt collecting chamber 211 inside the second scraping box 210.

[0044] The functions of the second scraping box 210 , the second collecting hopper 220 and the second sewage suction pipe 221 are the same as those of the first scraping box 110 , the first collecting hopper 120 and the first sewage suction pipe 121 , respectively.

[0045] The second scraper 230 is used to remove the attachments or dirt on the outer side of the tooth plate 11 . Since the second scraper 230 extends obliquely outward, the attachments or dirt are guided by the second scraper 230 into the second dirt collecting chamber 211 .

[0046] Example 4: Based on Example 3, see Figure 7 The second scraper box 210 is provided with a second mounting portion 212 on the side wall opposite to the second scraper plate 230. The second mounting portion 212 is provided with two second through holes 213. A second limiting rod 214 slides through the second through holes 213 and is then connected to the second scraper plate 230. A second spring 215 is mounted on the second limiting rod 214. One end of the second spring 215 abuts against the second mounting portion 212, and the other end abuts against the second scraper plate 230. Through the above structure, the second scraper plate 230 can elastically expand and contract, thereby adapting to changes in the position of the tooth plate 11.

[0047] Further, see Figure 6 The two second limiting rods 214 are respectively close to the top wall and the bottom wall of the second scraper box 210 , thereby reducing the interference of attachments or dirt entering the second dirt collecting chamber 211 caused by the second limiting rods 214 .

[0048] See also Figure 9 The connecting member 300 includes a support plate 301. Support blocks 302 are fixed to the undersides of both ends of the support plate 301. The support blocks 302 are provided with mounting holes 303. The middle portion of the underside of the support plate 301 is welded to the first scraper box 110 of the intermediate scraper device 100. The second suction pipe opening 221 of the second scraper box 210 is inserted into the mounting holes 303 and then welded to the support blocks 302. This structure facilitates the integration of an intermediate scraper device 100 and two outer scraper devices 200.

[0049] Example 5: On the basis of Example 3 or Example 4, see Figure 10 A sludge scraper includes a sludge scraper body 400. The sludge scraper body 400 is located at the triangular weir 10 and is equipped with a water treatment secondary sedimentation tank cleaning device via a connecting rod 304. By installing the water treatment secondary sedimentation tank cleaning device of the present application on the sludge scraper body 400, the triangular weir 10 can be cleaned.

[0050] Furthermore, three self-priming sludge pumps 500 and a filter box 600 are installed on the scraper body 400. The water inlets of the three self-priming sludge pumps 500 are connected to the first suction pipe port 121 on the middle scraping device 100 and the second suction pipe port 221 on the outer scraping device 200 through pipes respectively. The water outlets of the three self-priming sludge pumps 500 are connected to the upper layer of the filter box 600 through pipes. A filter screen 610 is provided in the middle of the filter box 600, and a drain pipe 620 is provided at the lower layer of the filter box 600. The self-priming sludge pump 500 is used to suck out the attachments or dirt removed from the first sewage collecting chamber 111 and the second sewage collecting chamber 211. The attachments or dirt together with part of the water are discharged into the filter box 600 through the self-priming sludge pump 500, filtered through the filter mesh 610 in the filter box 600, and the filtered water enters the lower layer of the filter box 600 and is finally discharged from the drain pipe 620 to the annular ditch 20.

[0051] Working principle of the present invention: When installing, see Figure 1 、 2 10. Two outer scraping devices 200 are symmetrically arranged on either side of the central scraping device 100. The central scraping device 100 and the outer scraping devices 200 are connected to form a whole via connectors 300. A gap is provided between the central scraping device 100 and the outer scraping devices 200 on both sides for the tooth plate 11 to pass through. The scraper body 400 is fixedly connected to the support plate 301 on the connector 300 via a connecting rod 304.

[0052] As the scraper body 400 rotates, it drives the cleaning device to rotate around the annular triangular weir 10. The first scrapers 130 on either side of the central scraper 100 abut against the inner sides of the tooth plates 11 on either side, removing debris or dirt from the tooth plates 11 on the inner side of the triangular weir 10. The shovel plates 140 scrape debris or dirt from the bottom of the triangular weir 10. Two outer scrapers 200 are symmetrically mounted on either side of the central scraper 100. The second scrapers 230 on the outer scrapers 200 are used to scrape dirt from the outer sides of the tooth plates 11 and direct it into the second collection chamber 211 within the second scraper box 210.

[0053] During the shoveling process, three self-priming sludge pumps 500 are started, and the self-priming sludge pumps 500 suck out the attachments or dirt removed from the first sewage collecting chamber 111 and the second sewage collecting chamber 211. The attachments or dirt together with part of the water are discharged into the filter box 600 through the self-priming sludge pumps 500, and filtered through the filter mesh 610 in the filter box 600. The filtered water enters the lower layer of the filter box 600 and is finally discharged from the drain pipe 620 to the annular ditch 20.

Claims

1. A water treatment secondary sedimentation tank cleaning device, characterized by: The intermediate scraping device (100) includes a first scraping box (110), one end of the first scraping box (110) is fixedly connected to a first collecting bucket (120), the first collecting bucket (120) is connected to a first suction pipe (121), the other end of the first scraping box (110) is open, and first scrapers (130) are respectively installed at the end positions of two side walls, the first scrapers (130) extend obliquely outward, and the first scrapers (130) are used to scrape off dirt and allow the dirt to enter a first dirt collecting chamber (111) inside the first scraping box (110).

2. A water treatment secondary sedimentation tank cleaning device according to claim 1, characterized in that: A shovel plate (140) is installed on the bottom wall of the other end of the first scraper box (110).

3. A water treatment secondary sedimentation tank cleaning device according to claim 1, characterized in that: The ends of the side walls on both sides of the first scraper box (110) are respectively provided with first mounting portions (112), a first inclined groove (113) is provided on the outside of the first mounting portion (112), a first spring (115) is installed inside the first inclined groove (113), and the first scraper (130) is slidably inserted into the first inclined groove (113) and abuts against the first spring (115).

4. A water treatment secondary sedimentation tank cleaning device according to claim 3, characterized in that: At least one first through hole (116) is provided on the inner side of the first mounting portion (112) at a position corresponding to the first inclined groove (113); the first limiting rod (114) slides through the first through hole (116) and is then connected and fixed to the first scraper (130); and the first spring (115) is sleeved on the first limiting rod (114).

5. A water treatment secondary sedimentation tank cleaning device according to any one of claims 1 to 4, characterized in that: It also includes two outer scraping devices (200), the two outer scraping devices (200) being symmetrically arranged on both sides of the middle scraping device (100), the middle scraping device (100) and the outer scraping devices (200) on both sides being connected to form a whole via a connecting piece (300), and a gap for the tooth plate (11) to pass through is provided between the middle scraping device (100) and the outer scraping devices (200) on both sides; The outer scraping device (200) comprises a second scraping box (210), one end of the second scraping box (210) is fixedly connected to a second collecting bucket (220), the second collecting bucket (220) is connected to a second dirt suction pipe opening (221), the other end of the second scraping box (210) is open, and a second scraper (230) is mounted on a side wall of one side, the second scraper (230) extends obliquely toward one side of the tooth plate (11), and the second scraper (230) is used to scrape off dirt and allow the dirt to enter the second dirt collecting chamber (211) inside the second scraping box (210).

6. A water treatment secondary sedimentation tank cleaning device according to claim 5, characterized in that: The second scraper box (210) is provided with a second mounting portion (212) on a side wall relative to the second scraper (230), and two second through holes (213) are provided on the second mounting portion (212). After the second limiting rod (214) slides through the second through holes (213), it is connected to the second scraper (230). A second spring (215) is mounted on the second limiting rod (214), and one end of the second spring (215) abuts against the second mounting portion (212), and the other end abuts against the second scraper (230).

7. A water treatment secondary sedimentation tank cleaning device according to claim 6, characterized in that: The two second limiting rods (214) are respectively close to the top wall and the bottom wall of the second scraper box (210).

8. The water treatment secondary sedimentation tank cleaning device according to claim 5, characterized in that: The connecting member (300) comprises a support plate (301), support blocks (302) are fixedly connected to the lower sides of both ends of the support plate (301), and a mounting hole (303) is provided on the support block (302). The middle portion of the lower side of the support plate (301) is connected and fixed to the first scraping box (110) of the intermediate scraping device (100), and the second suction pipe opening (221) on the second scraping box (210) is inserted into the mounting hole (303) and then connected and fixed to the support block (302).

9. A scraper, comprising a scraper body (400), characterized in that: The scraper body (400) is located at the triangular weir (10), and is equipped with a water treatment secondary sedimentation tank cleaning device according to any one of claims 5 to 8 via a connecting rod (304).

10. A mud scraper according to claim 9, characterized in that: Three self-priming sludge pumps (500) and a filter box (600) are installed on the scraper body (400). The water inlets of the three self-priming sludge pumps (500) are respectively connected to the first sewage suction pipe opening (121) on the middle sewage scraping device (100) and the second sewage suction pipe opening (221) on the outer sewage scraping device (200) through pipes. The water outlets of the three self-priming sludge pumps (500) are connected to the upper layer of the filter box (600) through pipes. A filter screen (610) is provided in the middle of the filter box (600), and a drainage pipe (620) is provided at the lower layer of the filter box (600).

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