Sludge screw pump feeding structure for sewage treatment high-density pool

Abstract

The utility model relates to a sludge screw pump feeding structure for a sewage treatment high-density pool, and belongs to the technical field of sludge screw pumps. Comprising a feeding pipe connected with the upper end of a sludge screw pump body and a lower tank body used for temporarily storing sludge, the lower tank body is fixed to the upper end of the feeding pipe through bolts, the upper ends of the front side and the rear side of the lower tank body are connected with the feeding pipe in a penetrating mode, the upper end of the lower tank body is fixedly connected with an upper tank body, and the inner side of the upper tank body is fixedly connected with an annular water outlet pipe through four sets of U-shaped buckles; a plurality of groups of nozzles are fixedly connected to the inner side of the annular water outlet pipe at equal intervals, and a water inlet pipe penetrates through one side of the annular water outlet pipe. According to the sludge screw pump, the lower tank body is additionally arranged above the feeding pipe, and in the lower tank body, the filter screen can filter large-particle silt and sundries in sludge and prevent the large-particle silt and sundries from entering the sludge screw pump body, so that the risk that the sludge screw pump body is abraded and damaged by large-particle substances is effectively reduced, and the service life of the sludge screw pump body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge screw pumps, in particular to a sludge screw pump feeding structure for a high-density tank in sewage treatment. Background Art

[0002] In sewage treatment, the sludge generated by the high-density tank will be subjected to sludge reflux or sludge discharge through a sludge screw pump.

[0003] When the existing sludge screw pump treats sludge, since the sludge contains large particles of sediment and sundries, these sediment and sundries will continuously impact the surfaces of the stator and the rotor, resulting in gradual wear of the stator and the rotor and shortening their service life. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a sludge screw pump feeding structure for a high-density tank in sewage treatment. The technical solution of the utility model is as follows:

[0005] A sludge screw pump feeding structure for a high-density tank in sewage treatment, comprising a feeding pipe connected to the upper end of a sludge screw pump body and a lower tank body for temporarily storing sludge. The lower tank body is fixed to the upper end of the feeding pipe by bolts. The upper ends of the front and rear sides of the lower tank body are both connected through with feeding pipes. The upper end of the lower tank body is fixedly connected with an upper tank body. The longitudinal section of the lower half of the upper tank body is trapezoidal. The diameter of the lower end opening of the upper tank body is consistent with the diameter of the upper end opening of the lower tank body. The diameter of the upper end opening of the upper tank body is larger than the diameter of the lower end opening of the upper tank body. The inner side of the upper tank body is fixedly connected with an annular water outlet pipe through four groups of U-shaped buckles. A plurality of spray heads are fixedly connected at equal intervals on the inner side of the annular water outlet pipe. One side of the annular water outlet pipe is connected through with a water inlet pipe. The water inlet pipe penetrates through the upper tank body and extends to the outside of the upper tank body and is connected to a water tank through a water pump. The upper end of the upper tank body is fixedly connected with a tank cover by bolts. A stirring shaft is rotatably connected inside the tank cover. A speed reduction motor is connected above the upper end of the stirring shaft and above the tank cover. Three stirring members are connected to the outer side of the stirring shaft and inside the lower tank body. Two filter meshes are rotatably connected to the outer side of the lower end of the stirring shaft. Through holes for supporting the rotation of the stirring shaft are respectively penetrated through the central positions of the surfaces of the two filter meshes. The two filter meshes are respectively arranged above and below the lowermost group of stirring members. A plurality of first filter holes are penetrated through the surface of the upper filter mesh located above. A plurality of second filter holes are penetrated through the surface of the other filter mesh located below. The diameter of the first filter holes is larger than the diameter of the second filter holes. Scraper members for scraping sundries on the upper surfaces of the filter meshes are connected to the upper surfaces of the two filter meshes on the outer side of the stirring shaft.

[0006] Optionally, the stirring member includes a first snap ring, the first snap ring is fixedly connected to the outside of the stirring shaft, and three stirring blades are fixedly connected to the outside of the first snap ring at equal intervals.

[0007] Optionally, the scraping member includes a second snap ring, the second snap ring is fixedly connected to the outside of the stirring shaft, and a set of scrapers are fixedly connected to the outside of the second snap ring at equal intervals, and the lower surface of the scraper is attached to the upper surface of the filter screen.

[0008] Optionally, an upper support ring is fixedly connected to the outside of the upper set of filter screens, and a lower support ring is fixedly connected to the outside of the lower set of filter screens. The inner wall of the lower end of the lower tank body is fixedly connected with a lower fixing ring, and a limiting groove for placing the lower support ring is opened on the inner side of the upper surface of the lower fixing ring. The inner wall of the lower end of the lower tank body and above the lower fixing ring is fixedly connected with an upper fixing ring. The upper support ring is movably placed on the upper surface of the upper fixing ring, and the outer diameter of the lower support ring is smaller than the inner diameter of the upper fixing ring.

[0009] Optionally, a star-shaped support frame is fixedly connected to the inner sides of the upper support ring and the lower support ring and below the filter screen.

[0010] Optionally, side holes are penetrated through the outer wall of the lower tank body and above the two sets of filter screens. A side cover is rotatably connected to the inside of the side hole, and a sealing gasket is bonded between the side cover and the side hole.

[0011] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not elaborate on the structures after the combinations one by one.

[0012] By means of the above solutions, the beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model effectively pre-treats the sludge inside the lower tank body by installing the lower tank body above the feed pipe, thereby preventing large-particle sediment and debris in the sludge from entering the sludge screw pump body. First, the sludge is transported from the feed pipe to the inside of the lower tank body, and then the stirring member mixes and dilutes the sludge and water in the lower tank body to make the sludge convenient for subsequent filtration. The diluted sludge will pass through the upper filter screen of the first filter hole and the lower filter screen of the second filter hole in sequence. These two filter screens can filter large-particle sediment and debris in the sludge to prevent them from entering the sludge screw pump body, effectively reducing the risk of wear and damage of the sludge screw pump body by large-particle substances, thereby prolonging its service life.

[0014] 2. The diameter of the first filter hole is larger than that of the second filter hole, enabling the two filter screens to classify and filter sediment and debris of different particle sizes, resulting in better filtration efficiency.

[0015] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and be able to implement it according to the content of the description, the following takes the preferred embodiment of the present utility model and combines with the attached drawings to describe in detail as follows. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the sludge screw pump feeding structure for the high-density sedimentation tank of sewage treatment provided by the present utility model from one perspective;

[0017] Figure 2 It is a schematic diagram of the overall appearance structure of the sludge screw pump feeding structure for the high-density sedimentation tank of sewage treatment provided by the present utility model from another perspective;

[0018] Figure 3 It is a right-view sectional view of the sludge screw pump feeding structure for the high-density sedimentation tank of sewage treatment provided by the present utility model;

[0019] Figure 4 Is Figure 3 An enlarged schematic diagram of part A in

[0020] Figure 5 It is a schematic diagram of the cooperation structure of the lower tank body, upper tank body, annular water outlet pipe, tank cover, stirring shaft and filter screen in the present utility model;

[0021] Figure 6 It is a front-view sectional view of the lower tank body and the upper tank body in the present utility model;

[0022] Figure 7 It is a schematic diagram of the cooperation structure of the stirring shaft, stirring parts and scraping parts in the present utility model;

[0023] Figure 8 It is an exploded schematic diagram of the filter screen, upper support ring and lower support ring in the present utility model.

[0024] Reference numerals in the drawings: 1, sludge screw pump body; 2, feed pipe; 3, lower tank body; 31, feed pipe; 32, lower fixing ring; 321, limit groove; 33, upper fixing ring; 34, side hole; 4, upper tank body; 5, annular water outlet pipe; 51, nozzle; 52, water inlet pipe; 53, U-shaped buckle; 6, tank cover; 7, stirring shaft; 71, reduction motor; 72, stirring parts; 721, ring buckle one; 722, stirring blades; 73, scraping parts; 731, ring buckle two; 732, scraping plate; 8, filter screen; 81, first filter hole; 82, second filter hole; 83, through hole; 84, upper support ring; 841, star-shaped support frame; 85, lower support ring; 9, side cover. Detailed Implementation Modes

[0025] The specific implementation manners of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0026] Please refer to Figures 1-8 , the present utility model provides a sludge screw pump feeding structure for a sewage treatment high-density tank, including a feeding pipe 2 connected to the upper end of a sludge screw pump body 1 and a lower tank body 3 for temporarily storing sludge. The lower tank body 3 is fixed to the upper end of the feeding pipe 2 by bolts. Feed pipes 31 penetrate through the upper ends of the front and rear sides of the lower tank body 3. An upper tank body 4 is fixedly connected to the upper end of the lower tank body 3. The longitudinal section of the lower half of the upper tank body 4 is trapezoidal. The diameter of the lower end opening of the upper tank body 4 is the same as the diameter of the upper end opening of the lower tank body 3. The diameter of the upper end opening of the upper tank body 4 is larger than the diameter of the lower end opening of the upper tank body 4. An annular water outlet pipe 5 is fixedly connected to the inner side of the upper tank body 4 by four groups of U-shaped buckles 53. A plurality of spray heads 51 are fixedly connected to the inner side of the annular water outlet pipe 5 at equal intervals. A water inlet pipe 52 penetrates through one side of the annular water outlet pipe 5. The water inlet pipe 52 penetrates through the upper tank body 4 and extends to the outside of the upper tank body 4 and is connected to a water tank through a water pump. A tank cover 6 is fixedly connected to the upper end of the upper tank body 4 by bolts. A stirring shaft 7 is rotatably connected to the inside of the tank cover 6. A reduction motor 71 is connected above the tank cover 6 at the upper end of the stirring shaft 7. Three stirring members 72 are connected to the outside of the stirring shaft 7 and located inside the lower tank body 3. Two filter meshes 8 are rotatably connected to the outside of the lower end of the stirring shaft 7. Through holes 83 for supporting the rotation of the stirring shaft 7 are respectively penetrated through the central positions of the surfaces of the two filter meshes 8. The two filter meshes 8 are respectively arranged above and below the lowermost group of stirring members 72. A plurality of first filter holes 81 are penetrated through the surface of the upper filter mesh 8. A plurality of second filter holes 82 are penetrated through the surface of the other lower filter mesh 8. The diameter of the first filter holes 81 is larger than the diameter of the second filter holes 82. Scraper members 73 for scraping sundries on the upper surfaces of the filter meshes 8 are connected to the upper surfaces of the two filter meshes 8 on the outside of the stirring shaft 7.

[0027] In this utility model, a lower tank body 3 is installed above the feeding pipe 2, and sludge is conveyed from the feeding pipe 31 into the interior of the lower tank body 3. At this time, a water pump pumps water from the water tank, passes through the water inlet pipe 52 and the annular water outlet pipe 5, and finally sprays out from the nozzle 51. At the same time, the reduction motor 71 drives the stirring shaft 7 to drive the outer stirring member 72 to rotate, so as to mix and dilute the sludge and water in the lower tank body 3 (the purpose of doing this is to prevent the sludge from being too thick, so that the subsequent filtering step is more effective and the clogging of the filter screen 8 is prevented). The diluted sludge will successively pass through the first filter holes 81 and the second filter holes 82 (larger sediment and debris will be blocked on the upper surface of the filter screen 8 located above, and smaller sediment and debris will be blocked on the upper surface of the filter screen 8 located below), and finally enter the sludge screw pump body 1 through the feeding pipe 2. In addition, the stirring shaft 7 will also drive the scraping member 73 to rotate on the upper surfaces of the two layers of filter screens 8, scraping off the large particle sediment and debris attached to the upper surfaces of the filter screens 8, and keeping the first filter holes 81 and the second filter holes 82 unobstructed.

[0028] Specifically, the lowest set of stirring members 72 is used to stir the sludge between the two filter screens 8, avoid the sludge from accumulating between the two filter screens 8, and keep the filter screens 8 unobstructed.

[0029] Specifically, the upper end opening diameter of the upper tank body 4 is larger than the lower end opening diameter of the upper tank body 4. The purpose of this setting is that since the stirring member 72, the scraping member 73 and the filter screen 8 in this structure need to be taken out from the upper end opening of the upper tank body 4, enough installation space needs to be provided inside the upper tank body 4 for the annular water outlet pipe 5, and it will not affect the taking out of the stirring member 72, the scraping member 73 and the filter screen 8.

[0030] Specifically, a liquid level sensor can be installed inside the lower tank body 3 to monitor the liquid level height inside the lower tank body 3 in real time and avoid its overflow into the upper tank body 4.

[0031] Furthermore, the stirring member 72 includes a first ring buckle 721, the first ring buckle 721 is fixedly connected to the outside of the stirring shaft 7, and three stirring blades 722 are fixedly connected to the outside of the first ring buckle 721 at equal intervals.

[0032] Specifically, the stirring blades 722 can effectively stir the sludge in the upper tank body 4, facilitating the full mixing of the sludge and water.

[0033] Furthermore, the scraping member 73 includes a second ring buckle 731, the second ring buckle 731 is fixedly connected to the outside of the stirring shaft 7, and a set of scraping plates 732 are fixedly connected to the outside of the second ring buckle 731 at equal intervals, and the lower surface of the scraping plates 732 is attached to the upper surface of the filter screen 8.

[0034] Specifically, the scraping plates 732 rotate with the stirring shaft 7, and can scrape off the sediment and debris attached to the upper surface of the filter screen 8, thereby ensuring that the first filter holes 81 and the second filter holes 82 are in an unobstructed state.

[0035] Further, an upper support ring 84 is fixedly connected to the outer side of the upper set of filter screens 8, and a lower support ring 85 is fixedly connected to the outer side of the other set of filter screens 8 located below. The inner wall of the lower end of the lower tank body 3 is fixedly connected with a lower fixing ring 32. A limiting groove 321 for placing the lower support ring 85 is formed in the inner side of the upper surface of the lower fixing ring 32. An upper fixing ring 33 is fixedly connected to the inner wall of the lower end of the lower tank body 3 and above the lower fixing ring 32. The upper support ring 84 is movably placed on the upper surface of the upper fixing ring 33, and the outer diameter of the lower support ring 85 is smaller than the inner diameter of the upper fixing ring 33.

[0036] Specifically, the upper filter screen 8 and the upper support ring 84 are supported by the upper fixing ring 33, and the lower filter screen 8 and the lower support ring 85 are supported by the lower fixing ring 32. The outer diameter of the lower support ring 85 is smaller than the inner diameter of the upper fixing ring 33. The purpose of this setting is that since the lower support ring 85 is located below the upper fixing ring 33, when disassembling and assembling the lower support ring 85, the lower support ring 85 needs to pass through the inside of the upper fixing ring 33. When the outer diameter of the lower support ring 85 is smaller than the inner diameter of the upper fixing ring 33, the upper fixing ring 33 will not interfere with the installation of the lower support ring 85.

[0037] Further, a star-shaped support frame 841 is fixedly connected to the inner sides of the upper support ring 84 and the lower support ring 85 and below the filter screen 8.

[0038] Specifically, the star-shaped support frame 841 provides additional support below the filter screen 8. This design helps to disperse the pressure. When dealing with sludge, such a support frame can reduce the concentrated force on the filter screen 8, extend its service life and improve the filtration efficiency.

[0039] Further, side holes 34 are formed through the outer wall of the lower tank body 3 and above the two sets of filter screens 8. A side cover 9 is rotatably connected to the inside of the side hole 34, and a sealing gasket is bonded between the side cover 9 and the side hole 34.

[0040] Specifically, the staff can regularly clean the two sets of filter screens 8 to prevent excessive accumulation of sediment and debris, which may affect the filtration effect. The two side covers 9 correspond to the two sets of filter screens 8 respectively. The staff can open the side covers 9 and then clean the sediment and debris on the upper surface of the filter screens 8 through the side holes 34.

[0041] It should be noted that the water pump and the reduction motor 71 mentioned above are both electrically connected to the control box and are controlled through the control box.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A sludge screw pump feeding structure for a high-density sewage treatment tank, characterized in that: It includes a feed pipe (2) connected to the upper end of the sludge screw pump body (1) and a lower tank body (3) for temporarily storing sludge. The lower tank body (3) is fixed to the upper end of the feed pipe (2) by bolts. The upper ends of the front and rear sides of the lower tank body (3) are both connected through feed pipes (31). The upper end of the lower tank body (3) is fixedly connected to an upper tank body (4). The lower half of the longitudinal section of the upper tank body (4) is trapezoidal. The diameter of the lower end opening of the upper tank body (4) is the same as that of the upper end opening of the lower tank body (3). The diameter of the upper end opening of the upper tank body (4) is larger than the diameter of the lower end opening of the upper tank body (4). An annular water outlet pipe (5) is fixedly connected to the inner side of the upper tank body (4) by four groups of U-shaped buckles (53). A plurality of spray nozzles (51) are fixedly connected to the inner side of the annular water outlet pipe (5) at equal intervals. One side of the annular water outlet pipe (5) is connected through a water inlet pipe (52). The water inlet pipe (52) penetrates through the upper tank body (4) and extends to the outside of the upper tank body (4) and is connected to a water tank through a water pump. The upper end of the upper tank body (4) is fixedly connected to a tank cover (6) by bolts. A stirring shaft (7) is rotatably connected to the inside of the tank cover (6). A speed reduction motor (71) is connected above the tank cover (6) at the upper end of the stirring shaft (7). Three stirring members (72) are connected to the outside of the stirring shaft (7) and inside the lower tank body (3). Two filter meshes (8) are rotatably connected to the outside of the lower end of the stirring shaft (7). Through holes (83) for supporting the rotation of the stirring shaft (7) are respectively formed through the central positions of the surfaces of the two filter meshes (8). The two filter meshes (8) are respectively arranged above and below the lowermost group of stirring members (72). A plurality of first filter holes (81) are formed through the surface of the upper filter mesh (8). A plurality of second filter holes (82) are formed through the surface of the lower filter mesh (8). The diameter of the first filter holes (81) is larger than the diameter of the second filter holes (82). Scraper members (73) for scraping sundries on the upper surface of the filter mesh (8) are connected to the upper surfaces of the two filter meshes (8) on the outside of the stirring shaft (7).

2. The sludge screw pump feeding structure for a high-density sedimentation tank for sewage treatment according to claim 1, wherein, The stirring member (72) includes a first loop buckle (721), and the first loop buckle (721) is fixedly connected to the outside of the stirring shaft (7). Three stirring blades (722) are fixedly connected to the outside of the first loop buckle (721) at equal intervals.

3. The sludge screw pump feeding structure for a high-density sedimentation tank for sewage treatment according to claim 1 or 2, characterized in that, The scraper member (73) includes a second loop buckle (731), and the second loop buckle (731) is fixedly connected to the outside of the stirring shaft (7). A group of scrapers (732) are fixedly connected to the outside of the second loop buckle (731) at equal intervals. The lower surface of the scraper (732) is attached to the upper surface of the filter mesh (8).

4. A sludge screw pump feeding structure for a high-density sewage treatment tank according to claim 1, characterized in that, A upper support ring (84) is fixedly connected to the outside of the upper group of the filter meshes (8), and a lower support ring (85) is fixedly connected to the outside of the other lower group of the filter meshes (8). The inner wall of the lower end of the lower tank body (3) is fixedly connected with a lower fixing ring (32). A limiting groove (321) for placing the lower support ring (85) is formed in the inner side of the upper surface of the lower fixing ring (32). An upper fixing ring (33) is fixedly connected to the inner wall of the lower end of the lower tank body (3) and above the lower fixing ring (32). The upper support ring (84) is movably placed on the upper surface of the upper fixing ring (33). The outer diameter of the lower support ring (85) is smaller than the inner diameter of the upper fixing ring (33).

5. A sludge screw pump feeding structure for a high-density sedimentation tank for sewage treatment according to claim 4, characterized in that, A star-shaped support frame (841) is fixedly connected to the inner sides of the upper support ring (84) and the lower support ring (85) and below the filter mesh (8).

6. The sludge screw pump feeding structure for a high-density sewage treatment tank according to claim 1, characterized in that, Side holes (34) are formed through the outer wall of the lower tank body (3) and above the two groups of filter meshes (8). A side cover (9) is rotatably connected to the inside of the side hole (34). A sealing gasket is adhesively bonded between the side cover (9) and the side hole (34).

Images