Settling tank

Abstract

The utility model relates to the field of municipal water supply and drainage, in particular to a settling tank, which comprises a bottom ring, a settling basin fixed at the upper end of the bottom ring, and a desilting mechanism. When the device needs to conduct desilting, a driving structure in the desilting mechanism drives a rotating frame on a rotating shaft to rotate, at the moment, through mutual meshing of an inner gear ring and a gear, after the rotating frame rotates, a plurality of scraping plates on a rotating rod and a sliding sleeve can rotate, and therefore the scraping plates scrape off sludge on the inner wall of a sedimentation tank. The inner gear ring and the gear which drive the sliding sleeve to rotate do not make direct contact with sewage and sludge, so that the situation that hard gravel particles contained in the sludge can affect driving of the dredging structure can be avoided, in this way, dredging can be conducted on the inner wall of the sedimentation tank without additional driving equipment, and the dredging efficiency is improved. And therefore, the energy consumption for dredging is relatively low.

Description

Technical Field

[0001] The utility model relates to the field of municipal water supply and drainage, in particular to a sedimentation tank. Background Art

[0002] A sedimentation tank is a gravity sedimentation device for solid-liquid separation, also known as a thickener or clarifier, which is used to increase the concentration of the suspension and obtain a clarified liquid at the same time. When the main purpose of sedimentation separation is to obtain a clarified liquid, the device used is called a clarifier; if the separation purpose is to obtain a precipitate containing solid particles, the device used is a thickener.

[0003] After retrieving the patent document with the publication number of CN221155499U, this patent document discloses "a sedimentation tank for municipal water supply and drainage. This device is provided with a first motor, a second motor, a scraper, a scraping ring, and a conical slope. Sewage is sedimented, and the sludge falls onto the conical slope. Due to the conical design of the conical slope, the sludge precipitates towards the lowest point. Then, the first motor drives two scrapers to scrape, and the valve scraper is opened to push the sludge towards the through port. The sludge enters the sludge discharge pipe through the valve and is thus discharged from the sedimentation tank. And the scraping ring is driven by the second motor to move up and down. By using the up and down movement of the scraping ring, the sludge remaining on the inner wall of the sedimentation tank is scraped off, and the sludge in the sedimentation tank is cleaned comprehensively in cooperation with the scraper, thus avoiding the need for a large amount of manpower and material resources to clean the sedimentation tank and making the cleaning more convenient.";

[0004] However, when the above device is operating, since the sludge in the sewage contains a large amount of sand and some small-sized hard particles, and the threaded rod of the above device is located inside the sedimentation tank, the threaded rod is easily corroded and rusted when soaked in the sedimentation tank for a long time. Moreover, due to some hard sand particles, the driving effect of the threaded rod is easily affected. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a sedimentation tank to solve the above problems.

[0006] The present utility model realizes the above purpose through the following technical solutions:

[0007] A sedimentation tank includes a bottom ring, a sedimentation tank is fixed at the upper end of the bottom ring, and also includes a silt cleaning mechanism;

[0008] The silt cleaning mechanism includes a driving structure, which is installed at the upper end of the sedimentation tank. A rotating shaft is fixed to the output end of the driving structure. A rotating frame is fixed to the upper part of the rotating shaft. Rotating rods are rotatably connected to both ends of the rotating frame. An internal gear ring is fixed to the inner wall of the sedimentation tank. Gears are fixed to the outer ring of the rotating rods at the position of the internal gear ring, and the gears mesh with the internal gear ring. A sliding sleeve is slidably connected to the lower end of the rotating rod. A spring is arranged on the outer ring of the upper half of the rotating rod. The upper end of the spring is fixed to the rotating rod, and the lower end of the spring is fixed to the sliding sleeve. A plurality of scraping plates are fixed to the outer ring of the sliding sleeve.

[0009] Preferably: A reinforcing rib is fixed to the lower end of the rotating frame, and a round head is arranged at the lower end of the sliding sleeve.

[0010] Preferably: Protrusions are arranged at both ends of the rotating rod, and grooves are formed in the inner wall of the sliding sleeve corresponding to the protrusions at both ends of the rotating rod.

[0011] Preferably: The driving structure includes a fixing frame, which is fixed to the upper end of the sedimentation tank. A motor is installed in the middle of the fixing frame. The output end of the motor is fixed to the input end of the rotating shaft, and a dialing frame is fixed to the outer periphery of the lower part of the rotating shaft.

[0012] Preferably: A sewage discharge pipe is fixed to the lower end of the sedimentation tank. A valve body is installed in the middle of the sewage discharge pipe, and a convex block is fixed to the bottom of the sedimentation tank.

[0013] Preferably: A landslide inclined towards one end of the sewage discharge pipe is arranged at the bottom of the sedimentation tank, and the inclination angle of the landslide is set at 5°.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] When the device needs to clean the silt, driven by the driving structure in the silt cleaning mechanism, the rotating frame on the rotating shaft rotates. At this time, through the mutual meshing of the internal gear ring and the gear, when the rotating frame rotates, the rotating rods and the plurality of scraping plates on the sliding sleeve can rotate, so that the scraping plates scrape off the silt on the inner wall of the sedimentation tank. In this way, the internal gear ring and the gear that drive the sliding sleeve to rotate do not directly contact the sewage and silt, which can avoid the situation that the hard sand and gravel particles contained in the silt will affect the driving of the silt cleaning structure. And in this way, when cleaning the inner wall of the sedimentation tank, no additional driving equipment is required, so that the energy consumption of silt cleaning is small. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a settling tank described in the present utility model;

[0018] Figure 2 It is a main sectional view of the sedimentation tank in a settling tank described in the present utility model;

[0019] Figure 3 It is a schematic structural diagram of a dredging mechanism in a settling tank described in the present utility model;

[0020] Figure 4 It is a rear sectional view of the dredging mechanism in a settling tank described in the present utility model.

[0021] The description of the reference numerals is as follows:

[0022] 1, bottom ring; 11, support frame; 12, fixing bolt; 2, sedimentation tank; 21, sewage pipe; 22, valve body; 23, convex block; 3, fixing frame; 31, motor; 32, rotating shaft; 33, dialing frame; 34, rotating frame; 35, rotating rod; 36, internal gear ring; 37, gear; 38, sliding sleeve; 39, spring; 310, scraping plate. Detailed implementation manners

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0025] The present utility model will be further described below in conjunction with the accompanying drawings:

[0026] As Figures 1-4 shown, a sedimentation tank includes a bottom ring 1, a sedimentation pond 2 is fixed to the upper end of the bottom ring 1, and a silt cleaning mechanism is further included.

[0027] A support frame 11 is fixed to the upper end of the bottom ring 1, and a plurality of fixing bolts 12 are arranged on the outer circle of the support frame 11; the device can be fixed to the support frame 11 through the fixing bolts 12, so that the sedimentation pond 2 and the support frame 11 are fixed.

[0028] A sewage discharge pipe 21 is fixed to the lower end of the sedimentation pond 2, a landslide inclined towards one end of the sewage discharge pipe 21 is arranged at the bottom of the sedimentation pond 2, and the inclination angle of the landslide is set at 5°, a valve body 22 is installed in the middle of the sewage discharge pipe 21, and a convex block 23 is fixed to the bottom of the sedimentation pond 2; through the inclined setting at the bottom of the sedimentation pond 2 and the convex block 23, the silt can slide towards the sewage discharge pipe 21 by its own weight, and the silt can be discharged through the sewage discharge pipe 21 after the valve body 22 is opened.

[0029] The dredging mechanism includes a driving structure. The driving structure is installed at the upper end of the sedimentation tank 2. The output end of the driving structure is fixed with a rotating shaft 32. The driving structure includes a fixing frame 3. The fixing frame 3 is fixed at the upper end of the sedimentation tank 2. A motor 31 is installed in the middle of the fixing frame 3. The output end of the motor 31 is fixed to the input end of the rotating shaft 32. An adjusting frame 33 is fixed to the outer periphery of the lower part of the rotating shaft 32. A rotating frame 34 is fixed to the upper part of the rotating shaft 32. A reinforcing rib is fixed to the lower end of the rotating frame 34. Rotating rods 35 are rotatably connected to both ends of the rotating frame 34. An internal gear ring 36 is fixed to the inner wall of the sedimentation tank 2. A gear 37 is fixed to the outer ring of the rotating rod 35 at the position of the internal gear ring 36. The gear 37 meshes with the internal gear ring 36. The lower end of the rotating rod 35 is slidably connected with a sliding sleeve 38. A round head is arranged at the lower end of the sliding sleeve 38. Protrusions are arranged at both ends of the rotating rod 35. Grooves are formed in the inner wall of the sliding sleeve 38 corresponding to the protrusions at both ends of the rotating rod 35. A spring 39 is arranged on the outer ring of the upper half of the rotating rod 35. The upper end of the spring 39 is fixed to the rotating rod 35. The lower end of the spring 39 is fixed to the sliding sleeve 38. A plurality of scraping plates 310 are fixed to the outer ring of the sliding sleeve 38. When the device needs to carry out dredging, driven by the driving structure in the dredging mechanism, the rotating frame 34 on the rotating shaft 32 rotates. At this time, through the mutual meshing of the internal gear ring 36 and the gear 37, when the rotating frame 34 rotates, the rotating rods 35 and the plurality of scraping plates 310 on the sliding sleeve 38 can be rotated, so that the scraping plates 310 scrape off the silt on the inner wall of the sedimentation tank 2. In this way, the internal gear ring 36 and the gear 37 that drive the sliding sleeve 38 to rotate do not directly contact the sewage and silt, so that the hard sand and gravel particles contained in the silt can be prevented from affecting the driving of the dredging structure. And in this way, when dredging the inner wall of the sedimentation tank 2, no additional driving equipment is required, so that the energy consumption of dredging is small.

[0030] Working principle: When the device needs to carry out dredging, start the motor 31. The motor 31 will drive the adjusting frame 33 and the rotating frame 34 to rotate. The rotating adjusting frame 33 and the landslide at the bottom of the sedimentation tank 2 will cause the silt to slide from the upper end of the convex block 23 to the input end of the sewage discharge pipe 21. At the same time, the rotating frame 34 will also rotate accordingly. Through the mutual meshing of the internal gear ring 36 and the gear 37, when the rotating frame 34 rotates, the rotating rods 35 and the plurality of scraping plates 310 on the sliding sleeve 38 can be rotated, so that the scraping plates 310 scrape off the silt on the inner wall of the sedimentation tank 2. In this way, the internal gear ring 36 and the gear 37 that drive the sliding sleeve 38 to rotate do not directly contact the sewage and silt, so that the hard sand and gravel particles contained in the silt can be prevented from affecting the driving of the dredging structure. And in this way, when dredging the inner wall of the sedimentation tank 2, no additional driving equipment is required, so that the energy consumption of dredging is small. Due to the sliding connection between the rotating rod 35 and the sliding sleeve 38 and the elasticity of the spring 39, the two rotating rods 35 can rotate around the inner wall of the sedimentation tank 2 without being affected by the slope at the bottom of the sedimentation tank 2.

[0031] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A sedimentation tank, comprising a bottom ring (1), a sedimentation tank (2) being fixed to the upper end of the bottom ring (1), characterized in that: It also includes desilting agencies; The dredging mechanism comprises a driving structure, which is mounted on the upper end of the sedimentation tank (2). A rotating shaft (32) is fixed to the output end of the driving structure. A rotating frame (34) is fixed to the upper end of the rotating shaft (32). Both ends of the rotating frame (34) are rotatably connected to a rotating rod (35). An inner gear ring (36) is fixed to the inner wall of the sedimentation tank (2). A gear (37) is fixed to the outer ring of the rotating rod (35) and is located at the position of the inner gear ring (36). The gear (37) and the inner gear ring (36) are meshed with each other. A sliding sleeve (38) is slidably connected to the lower end of the rotating rod (35). A spring (39) is arranged on the outer ring of the upper half of the rotating rod (35). The upper end of the spring (39) is fixed to the rotating rod (35), and the lower end of the spring (39) is fixed to the sliding sleeve (38). A plurality of scrapers (310) are fixed to the outer ring of the sliding sleeve (38).

2. A sedimentation tank according to claim 1, characterized in that: A reinforcing rib is fixed to the lower end of the rotating frame (34), and a round head is provided at the lower end of the sliding sleeve (38).

3. A sedimentation tank according to claim 1, characterized in that: The two ends of the rotating rod (35) are provided with convex strips, and the inner wall of the sliding sleeve (38) is provided with grooves corresponding to the convex strips at the two ends of the rotating rod (35).

4. A sedimentation tank according to claim 1, characterized in that: The driving structure comprises a fixed frame (3), the fixed frame (3) being fixed to the upper end of the sedimentation tank (2), a motor (31) being installed in the middle of the fixed frame (3), an output end of the motor (31) being fixed to an input end of the rotating shaft (32), and a shifting frame (33) being fixed to the periphery of the rotating shaft (32) near the lower end.

5. A sedimentation tank according to claim 1, characterized in that: A sewage pipe (21) is fixed at the lower end of the sedimentation tank (2), a valve body (22) is installed in the middle of the sewage pipe (21), and a convex block (23) is fixed at the bottom of the sedimentation tank (2).

6. A sedimentation tank according to claim 5, characterized in that: The bottom of the sedimentation tank (2) is provided with a landslide inclined toward one end of the sewage discharge pipe (21), and the inclination angle of the landslide is set at 5°.

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