Lift pump for wastewater treatment

Abstract

The utility model provides a lift pump for wastewater treatment, which comprises a filter tank, a filter plate is horizontally and fixedly arranged in the filter tank, and a scraper is slidably arranged on the filter plate; a cylinder is fixedly mounted on the outer surface of the filter box, and a telescopic shaft of the cylinder slidably extends into the filter box and is fixedly connected with the scraper; an impurity discharge port is formed in one side of the filter box, a cover plate is hermetically arranged at the impurity discharge port, and an elastic transmission assembly for opening and closing the cover plate is arranged on the filter box; the scraping plate and the cover plate are oppositely arranged, the lower end of the side, facing the cover plate, of the scraping plate is in a smooth arc shape, and an elastic scraper is fixedly arranged on the side, facing the scraping plate, of the cover plate; the lower inclined end of the elastic scraper faces the arc-shaped position of the scraper blade, and the elastic scraper and the scraper blade are in contact type transmission fit. When the air cylinder telescopic rod continuously pushes the scraping plate, the elastic scraper can make contact with the scraping plate, impurities adhering to the arc-shaped position of the lower end of the scraping plate are scraped, residues of the impurities at the arc-shaped position of the lower end of the scraping plate are effectively reduced, and the overall impurity removing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lift pumps, and particularly relates to a lift pump for wastewater treatment. Background Technique

[0002] A wastewater lift pump is a pump product integrating a pump, a motor, a housing, and a control system. It plays a crucial role in the sewage treatment system and is mainly used to lift wastewater or sewage at a low place or far from the municipal pipe network to a high place for further treatment and discharge.

[0003] A patent with the publication number CN218011518U in the prior art relates to a wastewater lift pump, which includes an impurity removal box. A collection box is arranged below the impurity removal box. A filter screen is fixedly installed in the impurity removal box. A waste discharge port is opened on one side of the impurity removal box, and a switch component is also arranged at the waste discharge port. An impurity removal component is arranged in the impurity removal box. The impurity removal component includes an impurity removal block. Guide bars are fixedly arranged at the top and bottom of the impurity removal block. The impurity removal block is slidably connected with the impurity removal box and abuts against the filter screen. A cylinder is fixedly installed on the outer surface of the impurity removal box. The piston rod of the cylinder slidably extends into the impurity removal box and is fixedly connected with the impurity removal block.

[0004] In the above solution, the cylinder is started to push the impurity removal block to slide on the surface of the filter screen, so as to push the impurities accumulated on the surface of the filter screen out of the impurity removal box, so that the impurities fall into the collection box, and then the cleaning work of the impurities is completed. However, during the process of the impurity removal block pushing the impurities, the viscous impurities in the wastewater are easily adhered to the guide bars at the bottom of the impurity removal block, and the above solution cannot clean the viscous impurities adhered to the surface of the guide bars, thus affecting the impurity removal effect of the impurity removal component and reducing the overall impurity removal efficiency. Content of the Utility Model

[0005] To solve the problems in the background technique, the utility model provides a lift pump for wastewater treatment.

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

[0007] A lift pump for wastewater treatment includes a filter box. A filter plate is horizontally and fixedly arranged in the filter box. A scraper is slidably arranged on the filter plate. A cylinder is fixedly installed on the outer surface of the filter box. The telescopic shaft of the cylinder slidably extends into the filter box and is fixedly connected with the scraper. A waste discharge port is opened on one side of the filter box. A cover plate is hermetically arranged at the waste discharge port. An elastic transmission component for realizing the opening and closing of the cover plate is arranged on the filter box. The scraper and the cover plate are arranged opposite to each other. The lower end of the side of the scraper facing the cover plate is arranged in a smooth arc shape. An elastic scraper is fixedly arranged on the side of the cover plate facing the scraper. The elastic scraper is arranged obliquely. The lower inclined end of the elastic scraper faces the arc of the scraper, and the two are in contact transmission cooperation.

[0008] Further, a water inlet pipe and a first connecting pipe are fixedly arranged on the filtering box, and a second connecting pipe is communicated with the first connecting pipe through a connecting flange; a pump body is communicated with the pipe orifice of the second connecting pipe far away from the first connecting pipe, a water outlet pipe and a collecting box are respectively arranged on two sides of the pump body, and the collecting box is located below the impurity discharging port.

[0009] Further, the elastic transmission assembly includes guide plates. Guide plates are arranged on both sides of the filtering box along the horizontal direction, and a second sliding groove is horizontally formed on the surface of each guide plate; limiting blocks are arranged on both sides of the cover plate, the number of the limiting blocks is equal to that of the second sliding grooves and they correspond to each other one by one, and each limiting block is slidably limited in the corresponding second sliding groove; in addition, a second spring is horizontally arranged in each second sliding groove, one end of the second spring is fixedly connected with the inner wall of the second sliding groove, and the other end is fixedly connected with the limiting block.

[0010] Further, a pushing block is fixedly arranged on one side of the scraping plate facing the cover plate, a matching block is horizontally and slidably penetrated through the cover plate on the side facing the scraping plate, and the pushing block and the matching block are arranged opposite to each other; a first sliding groove is horizontally formed in the cover plate, a disc is slidably limited in the first sliding groove, one end of the matching block far away from the scraping plate slides and extends into the first sliding groove and is fixedly connected with the disc; a first spring is arranged between the disc and the first sliding groove, one end of the first spring is fixedly connected with the disc, and the other end is fixedly connected with the inner wall of the first sliding groove.

[0011] The present application has the following beneficial effects:

[0012] As the air cylinder telescopic rod continuously pushes the scraping plate, the elastic scraper will contact with the scraping plate, so as to scrape off the impurities adhered to the arc-shaped part at the lower end of the scraping plate, effectively reducing the residue of impurities at the arc-shaped part at the lower end of the scraping plate and improving the overall impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By referring to the drawings and reading the detailed description below, the above and other purposes, features and advantages of the exemplary embodiments of the present utility model will become easy to understand. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0014] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is a sectional view of the present utility model;

[0016] Figure 3 is the present utility model Figure 2 partial enlarged schematic view at A in;

[0017] Figure 4This is a schematic structural diagram of the elastic scraper of the present utility model.

[0018] Explanation of reference numerals in the drawings:

[0019] 1. Filter box; 101. Water inlet pipe; 102. First connecting pipe; 2. Cylinder; 3. Cover plate; 301. First chute; 302. Fitting block; 4. Guide plate; 401. Second chute; 5. Pump body; 501. Water outlet pipe; 502. Second connecting pipe; 6. Collection box; 7. Connecting flange; 8. Second spring; 9. Filter plate; 10. Elastic scraper; 11. Pushing block; 12. Scraper; 13. First spring. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

[0021] As Figures 1-4 shown, the technical solution adopted by the present utility model is as follows: A lift pump for wastewater treatment includes a filter box 1 and a pump body 5. A water inlet pipe 101 is fixedly arranged at the top of the filter box 1, and a first connecting pipe 102 is fixedly arranged at the bottom of the filter box 1. A water outlet pipe 501 is fixedly arranged on one side of the pump body 5, and a collection box 6 is fixedly arranged on the other side of the pump body 5. A second connecting pipe 502 is fixedly arranged at the top of the pump body 5, and a connecting flange 7 is arranged in a communicating manner between the second connecting pipe 502 and the first connecting pipe 102.

[0022] A waste discharge port is opened on one side of the filter box 1. The waste discharge port is located above the collection box 6. A cover plate 3 is hermetically arranged at the waste discharge port of the filter box 1, and an elastic transmission assembly for realizing the opening and closing of the cover plate 3 is arranged on the outer surface of the filter box 1. A sealing block (not shown in the figure) is arranged at the part where the cover plate 3 contacts the filter box 1, and the sealing block is made of rubber material. When the cover plate 3 seals the waste discharge port, the sealing block abuts against the filter box 1 under the action of the elastic transmission assembly, thereby improving the sealing performance of the cover plate 3.

[0023] The elastic transmission component includes a guide plate 4. Guide plates 4 are fixedly arranged on both sides of the filter box 1 in the horizontal direction. The guide plates 4 are located above the collection box 6. A second chute 401 is horizontally opened on the surface of each guide plate 4. Limit blocks are provided on both sides of the cover plate 3. The number of limit blocks is equal to and corresponds one by one with the second chutes 401. Each limit block is slidably limited in the corresponding second chute 401. In addition, a second spring 8 is horizontally arranged in each second chute 401. One end of the second spring 8 is fixedly connected to the inner wall of the second chute 401, and the other end of the second spring 8 is fixedly connected to the end of the limit block away from the filter box 1.

[0024] A filter plate 9 is fixedly installed in the filter box 1 in the horizontal direction. A scraper 12 is slidably arranged on the top of the filter plate 9. The scraper 12 is arranged facing the cover plate 3. A cylinder 2 is fixedly installed on one side of the filter box 1 away from the cover plate 3. The telescopic shaft of the cylinder 2 slidably extends into the interior of the filter box 1 and is fixedly connected to the scraper 12.

[0025] As Figure 2 shown, the lower end of the side of the scraper 12 facing the cover plate 3 is set to be a smooth arc. The bottom of the scraper 12 is attached to the top of the filter plate 9, which is convenient for cleaning the impurities on the filter plate 9. An elastic scraper 10 is provided on the side of the cover plate 3 facing the scraper 12. The elastic scraper 10 can be made of materials such as polyurethane and spring steel. The elastic scraper 10 is inclined. The lower inclined end of the elastic scraper 10 faces the arc at the lower end of the scraper 12. The elastic scraper 10 is in contact transmission cooperation with the scraper 12.

[0026] As the scraper 12 continuously slides, the elastic scraper 10 bends and scrapes from top to bottom at the arc of the scraper 12, so as to remove impurities at the arc of the scraper 12, and further effectively reduce the impurities remaining at the arc of the scraper 12, improving the overall impurity removal effect.

[0027] As Figures 2-3 shown, a push block 11 is fixedly arranged on the side of the scraper 12 facing the cover plate 3. A matching block 302 is slidably penetrated through the side of the cover plate 3 facing the scraper 12 in the horizontal direction. The opposite sides of the push block 11 and the matching block 302 are in contact transmission cooperation. A first chute 301 is horizontally opened in the cover plate 3. A disc is slidably limited in the first chute 301. The end of the matching block 302 away from the scraper 12 slidably extends into the first chute 301 and is fixedly connected to the disc. The disc is used to limit the sliding of the matching block 302. A sealing ring (not shown in the figure) is fixedly sleeved on the outer surface of the matching block 302. The sealing ring is made of rubber. By abutting the sealing ring against the cover plate 3, the sealing cooperation between the matching block 302 and the cover plate 3 is realized.

[0028] A first spring 13 is provided between the disc and the first chute 301. One end of the first spring 13 is fixedly connected to the disc, and the other end of the first spring 13 is fixedly connected to the inner wall of the first chute 301. In addition, the elastic force of the first spring 13 is greater than the elastic force of the second spring 8, which is used to ensure that the elastic scraper 10 scrapes the impurities at the arc of the scraper 12 after the cover plate 3 is opened, so as to avoid the elastic scraper 10 scraping the arc of the scraper 12 prematurely. Premature scraping will cause the sticky impurities to re-adhere to the arc of the scraper 12.

[0029] Working principle: The waste water is introduced into the filter tank 1 from the water inlet pipe 101. The filter plate 9 will filter the waste water. After the filtered waste water flows through the first connecting pipe 102 and the second connecting pipe 502, it is discharged from the water outlet pipe 501 of the pump body 5, thus completing the treatment of the waste water.

[0030] When the waste water passes through the filter plate 9, impurities will remain on the surface of the filter plate 9. When it is necessary to clean the impurities, the cylinder 2 is started. The telescopic shaft of the cylinder 2 pushes the scraper 12 to slide on the surface of the filter plate 9 in the direction close to the cover plate 3, so as to push the impurities on the surface of the filter plate 9 to the impurity discharge port.

[0031] During the sliding process of the scraper 12, the pushing block 11 will contact the matching block 302 first. Since the force required for the first spring 13 to deform is greater than the force required for the second spring 8 to deform, the scraper 12 will push the cover plate 3 to slide along the direction of compression of the second spring 8 under the limitation of the second chute 401, thereby releasing the seal of the cover plate 3 on the filter tank 1, so that the impurities pushed by the scraper 12 fall into the collection box 6 from the impurity discharge port.

[0032] Moreover, during the sliding process of the cover plate 3, the compression deformation amount of the second spring 8 gradually increases. When the second spring 8 is compressed to the limit state and no longer deforms, the pushing block 11 starts to push the matching block 302 to slide in the first chute 301 in the direction of compression of the first spring 13, so that the scraper 12 continuously approaches the cover plate 3. [[ID=,]]

[0033] After the elastic scraper 10 contacts the arc of the scraper 12, as the telescopic shaft of the cylinder 2 continuously extends, the elastic scraper 10 starts to bend and scrape from top to bottom at the arc of the scraper 12, so as to remove impurities at the arc of the scraper 12, thereby effectively reducing the impurities remaining at the arc of the scraper 12 and improving the overall impurity removal effect.

[0034] After the impurity removal is completed, the telescopic shaft of the cylinder 2 is controlled to contract. The contraction of the telescopic shaft of the cylinder 2 will drive the scraper 12 to slide in the reverse direction for reset. Since the force required for the first spring 13 to deform is greater than the force required for the second spring 8 to deform, the cover plate 3 will not slide when the scraper 12 starts to slide. Therefore, the first spring 13 will first push the mating block 302 to slide for reset, thereby gradually releasing the contact between the elastic scraper 10 and the scraper 12, and then gradually completing the restoration of the elastic scraper 10.

[0035] After the mating block 302 is reset, the telescopic shaft of the cylinder 2 will drive the scraper 12 to continue sliding. At this time, the second spring 8 starts to push the cover plate 3 for reset until the second spring 8 pushes the cover plate 3 to re-seal the filter tank 1.

[0036] After the cover plate 3 seals the filter tank 1, the output end of the cylinder 2 will continue to drive the scraper 12 to slide until the scraper 12 is reset.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lift pump for wastewater treatment, characterized in that, It includes a filtration box (1), a filter plate (9) is horizontally and fixedly arranged inside the filtration box (1), and a scraper (12) is slidably arranged on the filter plate (9); a cylinder (2) is fixedly installed on the outer surface of the filtration box (1), and the telescopic shaft of the cylinder (2) slidably extends into the filtration box (1) and is fixedly connected to the scraper (12); a waste discharge port is opened on one side of the filtration box (1), a cover plate (3) is hermetically arranged at the waste discharge port, and an elastic transmission assembly for realizing the opening and closing of the cover plate (3) is arranged on the filtration box (1); the scraper (12) and the cover plate (3) are arranged facing each other, the lower end of the side of the scraper (12) facing the cover plate (3) is set to be a smooth arc, and an elastic scraper (10) is fixedly arranged on the side of the cover plate (3) facing the scraper (12); the elastic scraper (10) is obliquely arranged, the lower inclined end of the elastic scraper (10) faces the arc of the scraper (12), and the two are in contact transmission cooperation.

2. The lift pump for wastewater treatment according to claim 1, wherein A water inlet pipe (101) and a first connecting pipe (102) are fixedly arranged on the filtration box (1), and a second connecting pipe (502) is communicated with the first connecting pipe (102) through a connecting flange (7); a pump body (5) is communicated with the pipe orifice of the second connecting pipe (502) far from the first connecting pipe (102), a water outlet pipe (501) and a collection box (6) are respectively arranged on both sides of the pump body (5), and the collection box (6) is located below the waste discharge port.

3. The lift pump for wastewater treatment according to claim 1, characterized in that, The elastic transmission assembly includes guide plates (4), guide plates (4) are arranged horizontally on both sides of the filtration box (1), and a second chute (401) is opened on the surface of each guide plate (4) along the horizontal direction; limit blocks are arranged on both sides of the cover plate (3), the number of the limit blocks is equal to that of the second chutes (401) and they correspond one by one, and each limit block is slidably arranged in the corresponding second chute (401) in a limited way; in addition, a second spring (8) is arranged horizontally in each second chute (401), one end of the second spring (8) is fixedly connected with the inner wall of the second chute (401), and the other end is fixedly connected with the limit block.

4. The lift pump for wastewater treatment according to claim 1, characterized in that, A pushing block (11) is fixedly arranged on the side of the scraper (12) facing the cover plate (3), a matching block (302) is slidably arranged horizontally through the side of the cover plate (3) facing the scraper (12), and the pushing block (11) and the matching block (302) are arranged facing each other; a first chute (301) is opened horizontally in the cover plate (3), a disc is slidably arranged in the first chute (301) in a limited way, and the end of the matching block (302) far from the scraper (12) slidably extends into the first chute (301) and is fixedly connected with the disc; a first spring (13) is arranged between the disc and the first chute (301), one end of the first spring (13) is fixedly connected with the disc, and the other end is fixedly connected with the inner wall of the first chute (301).

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