Municipal sewage sedimentation tank

Abstract

The utility model discloses a municipal sewage sedimentation tank which comprises a tank body, a sliding plate, a sludge scraping driving assembly, a limiting assembly and a fixing block, a water inlet pipe is arranged on the left side of the upper end of the front side wall of the tank body, a sludge discharge pipe is arranged in the middle of the lower end of the rear side wall of the tank body, guide rods are symmetrically arranged between the front inner wall and the rear inner wall of the tank body, the interior of a sliding plate is slidably connected with the outer arc faces of the four guide rods, and scrapers are arranged on the outer edges of the front side face and the rear side face of the sliding plate; the scrapers are in sliding connection with the adjacent inner walls of the pool body, a connecting cylinder is arranged in the middle of the fixing block, a water pumping pipe is arranged at the upper end of the connecting cylinder, connecting rods are symmetrically arranged on the outer side wall of the fixing block, and floating barrels are arranged at the ends, away from the fixing block, of the connecting rods; according to the municipal sewage settling tank, the probability that settled sludge floats upwards again due to flowing of sewage is reduced, the sewage settling effect is improved, the sludge is automatically cleaned and scraped, and the settled sewage is cleaner.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a municipal sewage sedimentation tank. Background Technique

[0002] A large amount of impurities, sludge, etc. are contained in municipal sewage. Therefore, it is very necessary to treat the generated sewage and make it reusable. The sedimentation tank is one of the core facilities of municipal sewage treatment facilities. Its principle is a structure that uses sedimentation to remove suspended substances in water. The principle of the water purification equipment is to use the natural sedimentation or coagulation sedimentation of water to remove suspended substances in water. After long-term use, a large amount of sludge and garbage will adhere to the bottom of the sedimentation tank, resulting in a poor sedimentation effect of the sedimentation tank and affecting the sedimentation efficiency, seriously affecting the sewage sedimentation work. Moreover, generally, after the water in the sedimentation tank is settled, a water pump is needed to pump it away. Each time of pumping water, the water pipe needs to be put into the sedimentation tank, and the water pipe needs to be fixed at different heights according to the water quality purification situation. The work during pumping is cumbersome. In addition, large turbulences are easily formed during the water inlet and pumping processes of the existing municipal sewage sedimentation tank, causing the already settled sludge to be suspended in the sewage again, reducing the sedimentation effect. For this reason, we propose a municipal sewage sedimentation tank to solve the above problems. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide a municipal sewage sedimentation tank, reduce the probability of the settled sludge floating up again due to the sewage flow, improve the sewage sedimentation effect, automatically clean and scrape the sludge, and make the settled sewage cleaner, which can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A municipal sewage sedimentation tank, including a tank body, a sliding plate, a sludge scraping driving assembly, a limiting assembly and a fixing block;

[0005] Tank body: The upper left side of the front side wall is provided with a water inlet pipe, the middle part of the lower end of the rear side wall of the tank body is provided with a sludge discharge pipe, guide rods are symmetrically arranged between the front and rear inner walls of the tank body, the inner part of the sliding plate is slidably connected with the outer arc surfaces of the four guide rods respectively, scraping knives are arranged on the outer edges of the front and rear side surfaces of the sliding plate, the scraping knives are respectively slidably connected with the adjacent inner walls of the tank body, a connecting cylinder is arranged in the middle of the fixing block, a water extraction pipe is arranged at the upper end of the connecting cylinder, connecting rods are symmetrically arranged on the outer side wall of the fixing block, and floating cylinders are arranged at the ends of the connecting rods away from the fixing block;

[0006] Sludge scraping driving assembly: Rotationally connected to the side wall of the tank body, and fixedly connected to the lower end of the sliding plate;

[0007] Limit component: It is arranged between the left and right inner walls of the pool body. The limit component is fixedly connected to the upper surface of the floating cylinder respectively, reducing the water flow surge during water inlet and pumping, reducing the probability that the settled sludge floats up again due to the sewage flow, improving the sewage sedimentation effect, automatically cleaning and scraping the sludge, reducing the sludge adhesion, so that the settled sewage is cleaner.

[0008] Furthermore, both ends of the bottom plate of the pool body are inclined upward, and a downward groove is provided in the middle of the bottom plate of the pool body, so that the sludge converges to the middle of the bottom plate of the pool body, facilitating the discharge of the sludge.

[0009] Furthermore, the sludge scraping drive component includes support rods, wire winding wheels, guide wheels and traction ropes. The support rods are respectively rotatably connected between the left and right side walls of the pool body and between the left and right ends of the bottom plate of the pool body. The wire winding wheels are respectively arranged in the middle of the outer arc surfaces of the two upper support rods. The guide wheels are respectively arranged in the middle of the outer arc surfaces of the two lower support rods. The two ends of the traction rope are respectively fixedly connected to the lower ends of the front and rear side walls of the sliding plate. The traction rope is respectively wound on the inner wall of the spiral groove arranged on the outer arc surface of the two upper wire winding wheels. The traction rope is respectively slidably connected to the lower outer arc surface of the two guide wheels. A second motor is provided on the right side surface of the pool body, and the output shaft of the second motor is fixedly connected to the right end of the front upper support rod, automatically pulling the sliding plate to move back and forth, so as to clean and scrape the sludge inside the pool body.

[0010] Furthermore, the limit component includes positioning plates, sleeves and sliding columns. The positioning plates are symmetrically arranged between the left and right inner walls of the pool body. Sleeves are provided at both the left and right ends of the positioning plates. The sliding columns are respectively arranged on the upper surface of the floating cylinder. The sliding columns are respectively slidably connected to the inner walls of the vertically corresponding sleeves, limiting the floating cylinder and preventing the reciprocating swing of the water suction pipe due to the sewage flow inside the water suction pipe.

[0011] Furthermore, it further includes a spiral pusher rod and a first motor. The spiral pusher rod is rotatably connected to the lower end of the front side wall of the pool body. The spiral pusher rod is located inside the groove in the middle of the bottom plate of the pool body. The first motor is arranged on the front side surface of the pool body, and the output shaft of the first motor is fixedly connected to the front end of the spiral pusher rod, pushing the sludge backward, facilitating the discharge from the sludge discharge pipe.

[0012] Furthermore, a diversion groove is provided at the upper end of the inner left wall surface of the pool body. There is a gap between the bottom plate of the diversion groove and the inner left wall surface of the pool body. The water inlet pipe passes through the front side plate of the diversion groove and extends into the inside of the diversion groove, so that the sewage entering the pool body flows downward along the inner wall of the pool body, reducing the water flow surge and preventing the settled sludge from floating up again under the action of the water flow.

[0013] Furthermore, the water suction pipe is a soft plastic pipe, which can adapt to the up and down floating of the connecting cylinder.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The municipal sewage sedimentation tank has the following advantages:

[0015] 1. The sewage to be sedimented is conveyed into the inside of the diversion trough through the water inlet pipe. The sewage flows downward along the inner left wall surface of the tank body through the gap between the bottom plate of the diversion trough and the inner left wall surface of the tank body. The external water pump is used to pump water out of the inside of the tank body from the surface of the sedimented sewage through the water extraction pipe. As the water level drops, the floating cylinder descends downward, and the sliding column slides downward inside the sleeve. The sleeve limits the sliding column to prevent the sewage inside the water extraction pipe from flowing and causing the floating cylinder and the water extraction pipe to swing back and forth. Thus, it is ensured that the lower end of the connecting cylinder always remains steadily submerged below a specified height under the water surface, reducing the water flow surging during water inlet and water extraction, and reducing the probability of the sedimented sludge floating up again due to the sewage flow, thereby improving the sewage sedimentation effect.

[0016] 2. Start the second motor. The output shaft of the second motor drives the support rod above the front side to rotate. Since the traction ropes are respectively wound around the inner walls of the spiral grooves provided on the outer arc surfaces of the two upper winding wheels, the support rod above the front side drives the front winding wheel to rotate. Then, through the friction between the winding wheel and the traction rope, the traction rope is driven to rotate under the guiding action of the winding wheel and the guiding wheel. The two ends of the traction rope drive the sliding plate to slide forward from back to front under the guiding action of the four guiding rods, thereby driving the front scraper to automatically scrape the sludge adhered to the left and right inner walls and the left and right sides of the bottom plate of the tank body, reducing the sludge adhesion, and thus making the sedimented sewage cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a top view structural diagram of the present utility model;

[0019] Figure 3 is a left view sectional structural diagram of the present utility model.

[0020] In the figure: 1 tank body, 2 water inlet pipe, 3 sludge discharge pipe, 4 guiding rod, 5 sliding plate, 6 scraper, 7 diversion trough, 8 sludge scraping driving assembly, 81 support rod, 82 winding wheel, 83 guiding wheel, 84 traction rope, 9 limiting assembly, 91 positioning plate, 92 sleeve, 93 sliding column, 10 spiral feeding rod, 11 first motor, 12 fixing block, 13 connecting rod, 14 floating cylinder, 15 connecting cylinder, 16 water extraction pipe, 17 second motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0022] Please refer to Figures 1-3 , this embodiment provides a technical solution: a municipal sewage sedimentation tank, including a tank body 1, a sliding plate 5, a sludge scraping drive assembly 8, a limiting assembly 9 and a fixing block 12;

[0023] Tank body 1: The upper left side of the front side wall is provided with a water inlet pipe 2. The upper end of the inner left wall surface of the tank body 1 is provided with a diversion groove 7. There is a gap between the bottom plate of the diversion groove 7 and the inner left wall surface of the tank body 1. The water inlet pipe 2 passes through the front side plate of the diversion groove 7 and extends into the inside of the diversion groove 7. The sewage to be sedimented is transported into the inside of the diversion groove 7 through the water inlet pipe 2. The sewage flows downward along the inner left wall surface of the tank body 1 through the gap between the bottom plate of the diversion groove 7 and the inner left wall surface of the tank body 1, reducing the water flow surging and preventing the already sedimented sludge from floating up again under the action of the water flow. The middle part of the lower end of the rear side wall of the tank body 1 is provided with a sludge discharge pipe 3. Guide rods 4 are symmetrically arranged between the front and rear inner walls of the tank body 1. The inner parts of the sliding plates 5 are respectively slidably connected to the outer arc surfaces of the four guide rods 4. Scrapers 6 are arranged on the outer edges of the front and rear side surfaces of the sliding plates 5. The scrapers 6 are respectively slidably connected to the adjacent inner walls of the tank body 1. The middle part of the fixing block 12 is provided with a connecting cylinder 15. The upper end of the connecting cylinder 15 is provided with a water extraction pipe 16. The water extraction pipe 16 is a soft plastic pipe, which can adapt to the up and down floating of the connecting cylinder 15. Connecting rods 13 are symmetrically arranged on the outer side wall of the fixing block 12. The ends of the connecting rods 13 away from the fixing block 12 are both provided with floating cylinders 14. The left and right ends of the bottom plate of the tank body 1 are both inclined upward, and the middle part of the bottom plate of the tank body 1 is provided with a downward groove, so that the sludge converges towards the middle part of the bottom plate of the tank body 1, facilitating the discharge of the sludge.

[0024] Scraping mud drive assembly 8: Rotationally connected to the side wall of the tank body 1, the scraping mud drive assembly 8 is fixedly connected to the lower end of the sliding plate 5. The scraping mud drive assembly 8 includes a support rod 81, a wire winding wheel 82, a guide wheel 83, and a traction rope 84. The support rod 81 is rotationally connected between the left and right side walls of the tank body 1 and between the left and right ends of the bottom plate of the tank body 1 respectively. The wire winding wheels 82 are respectively arranged in the middle of the outer arc surfaces of the two upper support rods 81. The guide wheels 83 are respectively arranged in the middle of the outer arc surfaces of the two lower support rods 81. The two ends of the traction rope 84 are fixedly connected to the lower ends of the front and rear side walls of the sliding plate 5 respectively. The traction rope 84 is respectively wound around the inner walls of the spiral grooves arranged on the outer arc surfaces of the two upper wire winding wheels 82. The traction rope 84 is respectively slidably connected to the lower outer arc surfaces of the two guide wheels 83. A second motor 17 is provided on the right side surface of the tank body 1. The output shaft of the second motor 17 is fixedly connected to the right end of the upper front support rod 81. The output shaft of the second motor 17 drives the upper front support rod 81 to rotate. Since the traction rope 84 is respectively wound around the inner walls of the spiral grooves arranged on the outer arc surfaces of the two upper wire winding wheels 82, the upper front support rod 81 drives the front wire winding wheel 82 to rotate, and then drives the traction rope 84 to rotate under the guiding action of the wire winding wheel 82 and the guide wheel 83 through the friction between the wire winding wheel 82 and the traction rope 84. The two ends of the traction rope 84 drive the sliding plate 5 to slide forward from back under the guiding action of the four guide rods 4, so as to drive the front scraper 6 to scrape the sludge adhered to the left and right inner walls and the left and right sides of the bottom plate of the tank body 1, reduce the adhesion of the sludge, and make the precipitated sewage cleaner.

[0025] Limit component 9: Arranged between the left and right inner walls of the tank body 1, the limit component 9 is fixedly connected to the upper surface of the floating cylinder 14 respectively. The limit component 9 includes a positioning plate 91, a sleeve 92, and a sliding column 93. The positioning plates 91 are symmetrically arranged between the left and right inner walls of the tank body 1. Sleeves 92 are provided at both the left and right ends of the positioning plate 91. The sliding columns 93 are respectively arranged on the upper surface of the floating cylinder 14. The sliding columns 93 are respectively slidably connected to the inner walls of the vertically corresponding sleeves 92. The floating cylinder 14 floats on the water surface. The lower end of the connecting cylinder 15 is submerged below the water surface. After the precipitation is completed, an external water pump is used to pump the water out of the inside of the tank body 1 from the surface of the precipitated sewage through the water suction pipe 16. As the water level drops, the floating cylinder 14 descends downward, and the sliding columns 93 slide downward inside the sleeves 92. The sleeves 92 limit the sliding columns 93 to prevent the floating cylinder 14 and the water suction pipe 16 from swinging back and forth due to the flow of sewage inside the water suction pipe 16, so as to ensure that the lower end of the connecting cylinder 15 is always smoothly submerged below the water surface at a specified height, reduce the water flow surge during pumping, and reduce the probability of the precipitated sludge floating up again due to the flow of sewage.

[0026] Among them: It also includes a spiral feeding rod 10 and a first motor 11. The spiral feeding rod 10 is rotatably connected to the lower end of the front side wall of the pool body 1. The spiral feeding rod 10 is located inside the groove in the middle of the bottom plate of the pool body 1. The first motor 11 is arranged on the front side of the pool body 1. The output shaft of the first motor 11 is fixedly connected to the front end of the spiral feeding rod 10. The output shaft of the first motor 11 drives the spiral feeding rod 10 to rotate. The spiral blades of the spiral feeding rod 10 cooperate with the inner wall of the groove in the middle of the bottom plate of the pool body 1 to convey the precipitated sludge to the rear side of the pool body 1, avoiding the phenomenon that the sludge is overly dispersed and cannot be completely discharged from the pool body 1.

[0027] The working principle of a municipal sewage sedimentation tank provided by the present utility model is as follows:

[0028] The sewage to be sedimented is conveyed into the inside of the diversion groove 7 through the water inlet pipe 2. The sewage flows downward along the inner left wall surface of the pool body 1 through the gap between the bottom plate of the diversion groove 7 and the inner left wall surface of the pool body 1, reducing the water flow surging and avoiding the re-floating of the already precipitated sludge under the action of the water flow. After the inside of the pool body 1 is filled with sewage, a flocculant is added to the inside of the pool body 1 and left standing. The sludge in the sewage is flocculated and precipitated. At this time, the floating cylinder 14 floats on the water surface, and the lower end of the connecting cylinder 15 is immersed below the water surface. After the precipitation is completed, an external water pump is used to pump out the water from the surface of the precipitated sewage through the water extraction pipe 16 from the inside of the pool body 1. As the water level drops, the floating cylinder 14 descends downward, and the sliding column 93 slides downward inside the sleeve 92. The sleeve 92 limits the sliding column 93 to prevent the sewage inside the water extraction pipe 16 from flowing and causing the floating cylinder 14 and the water extraction pipe 16 to swing back and forth, so as to ensure that the lower end of the connecting cylinder 15 is always smoothly immersed below the water surface at a specified height, reducing the water flow surging during pumping, and reducing the probability of the precipitated sludge floating up again due to the sewage flow. The second motor 17 is started. The output shaft of the second motor 17 drives the support rod 81 above the front side to rotate. Since the traction ropes 84 are respectively wound around the inner walls of the spiral grooves provided on the outer arc surfaces of the two upper winding wheels 82, the support rod 81 above the front side drives the front winding wheel 82 to rotate. Then, through the friction between the winding wheel 82 and the traction rope 84, the traction rope 84 is driven to rotate under the guiding action of the winding wheel 82 and the guiding wheel 83. The two ends of the traction rope 84 drive the sliding plate 5 to slide from the rear to the front under the guiding action of the four guiding rods 4, thereby driving the front scraper 6 to scrape the sludge adhered to the left and right inner walls and the left and right sides of the bottom plate of the pool body 1, reducing the sludge adhesion, and making the precipitated sewage cleaner. The first motor 11 is started. The output shaft of the first motor 11 drives the spiral feeding rod 10 to rotate. The spiral blades of the spiral feeding rod 10 cooperate with the inner wall of the groove in the middle of the bottom plate of the pool body 1 to convey the precipitated sludge to the rear side of the pool body 1. Then, an external sludge pump is used to pump out the sludge through the sludge discharge pipe 3.

[0029] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A municipal sewage sedimentation tank, characterized in that: It includes a pool body (1), a sliding plate (5), a sludge scraping drive assembly (8), a limiting assembly (9), and a fixing block (12); Pool body (1): At the upper left side of the front side wall of the pool body (1), a water inlet pipe (2) is provided. At the middle of the lower end of the rear side wall of the pool body (1), a sludge discharge pipe (3) is provided. Between the front and rear inner walls of the pool body (1), guide rods (4) are symmetrically provided. The inner part of the sliding plate (5) is slidably connected to the outer arc surfaces of the four guide rods (4). Scrapers (6) are provided along the outer edges of the front and rear side surfaces of the sliding plate (5). The scrapers (6) are respectively slidably connected to the inner walls of the adjacent pool body (1). In the middle of the fixing block (12), a connecting cylinder (15) is provided. At the upper end of the connecting cylinder (15), a water suction pipe (16) is provided. Connecting rods (13) are symmetrically provided on the outer side wall of the fixing block (12). At the ends of the connecting rods (13) away from the fixing block (12), floating cylinders (14) are provided; Sludge scraping drive assembly (8): It is rotatably connected to the side wall of the pool body (1), and the sludge scraping drive assembly (8) is fixedly connected to the lower end of the sliding plate (5); Limiting assembly (9): It is arranged between the left and right inner walls of the pool body (1), and the limiting assembly (9) is fixedly connected to the upper surfaces of the floating cylinders (14) respectively.

2. The municipal sewage sedimentation tank according to claim 1, characterized in that: Both the left and right ends of the bottom plate of the pool body (1) are inclined upward, and a downward groove is provided in the middle of the bottom plate of the pool body (1).

3. A municipal sewage sedimentation tank according to claim 2, characterized in that: The sludge scraping drive assembly (8) includes support rods (81), wire winding wheels (82), guide wheels (83), and a traction rope (84). The support rods (81) are respectively rotatably connected between the left and right side walls of the pool body (1) and between the left and right ends of the bottom plate of the pool body (1). The wire winding wheels (82) are respectively arranged in the middle of the outer arc surfaces of the two upper support rods (81). The guide wheels (83) are respectively arranged in the middle of the outer arc surfaces of the two lower support rods (81). The two ends of the traction rope (84) are respectively fixedly connected to the lower ends of the front and rear side walls of the sliding plate (5). The traction rope (84) is respectively wound around the inner walls of the spiral grooves provided on the outer arc surfaces of the two upper wire winding wheels (82). The traction rope (84) is respectively slidably connected to the lower outer arc surfaces of the two guide wheels (83). A second motor (17) is provided on the right side surface of the pool body (1). The output shaft of the second motor (17) is fixedly connected to the right end of the upper front support rod (81).

4. A municipal sewage sedimentation tank according to claim 1, characterized in that: The limiting assembly (9) includes positioning plates (91), sleeves (92), and sliding columns (93). The positioning plates (91) are symmetrically arranged between the left and right inner walls of the pool body (1). Sleeves (92) are provided at both the left and right ends of the positioning plates (91). The sliding columns (93) are respectively arranged on the upper surfaces of the floating cylinders (14). The sliding columns (93) are respectively slidably connected to the inner walls of the vertically corresponding sleeves (92).

5. A municipal sewage sedimentation tank according to claim 2, characterized in that: It further includes a spiral feed rod (10) and a first motor (11). The spiral feed rod (10) is rotatably connected to the lower end of the front side wall of the pool body (1). The spiral feed rod (10) is located inside a groove in the middle of the bottom plate of the pool body (1). The first motor (11) is arranged on the front side of the pool body (1), and the output shaft of the first motor (11) is fixedly connected to the front end of the spiral feed rod (10).

6. A municipal sewage sedimentation tank according to claim 1, characterized in that: At the upper end of the inner left wall surface of the pool body (1), a diversion groove (7) is provided. There is a gap between the bottom plate of the diversion groove (7) and the inner left wall surface of the pool body (1). The water inlet pipe (2) passes through the front side plate of the diversion groove (7) and extends into the interior of the diversion groove (7).

7. A municipal sewage sedimentation tank according to any one of claims 1-6, characterized in that: The water extraction pipe (16) is a soft plastic pipe.

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