Full-water-surface slag scraper for primary sedimentation tank

Abstract

The utility model discloses a full-water-surface slag scraper for a primary sedimentation tank, relates to the technical field of sewage treatment, aims to solve the problem in the prior art that the cleaning of sewage surface dirt by slag scraping equipment is seriously influenced due to the up-and-down movement of the water level, and adopts the technical scheme that a slag scraping mechanism is arranged above the primary sedimentation tank; the slag scraping mechanism comprises a transmission shaft, the transmission shaft is connected with a driving mechanism, a transmission wheel is arranged on the transmission shaft, a slag scraping chain is meshed on the transmission wheel, the slag scraping chain is provided with a slag scraping plate, and a water collecting mechanism is arranged on the primary sedimentation tank on the left side of the slag scraping mechanism and comprises a water collecting tank; according to the utility model, an original civil engineering structure water collecting channel is replaced by the water collecting mechanism, and the water collecting mechanism is provided with the liquid level detection mechanism, so that the water outlet flow can be adjusted in real time according to the liquid level of the primary sedimentation tank, and the liquid level height of the primary sedimentation tank is ensured to be stable and unchanged.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a full-surface sludge scraper for primary sedimentation tanks. Background Technology

[0002] In the physical treatment process of wastewater, coarse screens and ultrafine screens mainly remove solid pollutants with a particle size greater than 1 mm, while solid pollutants with a particle size less than 1 mm, suspended solids, foam, and microorganisms are removed by equipment such as air flotation machines and primary sedimentation tanks. If the wastewater contains animal or vegetable oils, a primary sedimentation tank is generally used to remove small suspended solids while also removing most of the animal or vegetable oils.

[0003] Primary sedimentation tanks are typically equipped with sludge suction and scraping devices. To achieve better sludge suction and scraping effects, conventional sludge suction and scraping devices need to move back and forth along the length of the tank to scrape the scum on the water surface to the collection trough. At the same time, a submersible pump located in the sludge tank discharges the settled sludge from the bottom of the tank. Generally, this scraping device takes the form of: a track laid along the length of the tank, a truss structure as the main body, and the main body moving back and forth along the track to achieve sludge suction and scraping.

[0004] This type of slag scraping equipment has the following main disadvantages:

[0005] 1. The equipment has extremely high requirements for installation and maintenance. If it is not installed properly, it is very easy to run off track, wear on the rails, or even derailment.

[0006] 2. The up-and-down movement of the water level will seriously affect the cleaning of dirt on the surface of the sewage by the sludge scraping equipment. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the existing defects and provide a full-surface sludge scraper for primary sedimentation tanks, which can effectively solve the problems in the background art.

[0008] To achieve the above objectives, this utility model discloses a full-surface sludge scraper for a primary sedimentation tank. The technical solution includes a primary sedimentation tank. A sludge scraping mechanism is provided above the primary sedimentation tank. The sludge scraping mechanism includes a drive shaft, which is rotatably connected to the primary sedimentation tank. A drive mechanism is connected to the end of the drive shaft. The drive mechanism is fixedly connected to the surface of the primary sedimentation tank and mirror-mounted on the primary sedimentation tank. There are drive wheels on both sides of the drive shaft, and a sludge scraping chain meshes with the drive wheels. A sludge scraping plate is connected to the sludge scraping chain. A water collection mechanism is provided on the left side of the primary sedimentation tank of the sludge scraping mechanism. The water collection mechanism includes a water collection trough with a water collection hole. A liquid level detection mechanism is located above the water collection trough. An electric actuator is located to the right of the liquid level detection mechanism. A gate is located at the upper end of the output shaft of the electric actuator. A drain pipe is located at the bottom of the water collection trough to the right of the gate, and the other end of the drain pipe extends to the outside of the primary sedimentation tank.

[0009] As a preferred technical solution of this utility model, a groove is formed on the upper surface of the primary sedimentation tank, and a bearing seat is provided inside. The transmission shaft is rotatably connected to the primary sedimentation tank through the bearing seat, which is used to provide a fixed space for the bearing seat.

[0010] As a preferred embodiment of this utility model, the slag scraping chain is provided with a fixing pin, the fixing pin has a thread, the slag scraping plate passes through the fixing pin to the slag scraping chain and is fixed by a self-locking nut, and the end of the fixing pin has a cotter pin for fixing the slag scraping plate to the slag scraping chain.

[0011] As a preferred technical solution of this utility model, there is a first support below the scraper chain. There are two first supports, which are mirror images of the two sides of the scraper chain. The first supports are fixed to the inside of the primary sedimentation tank to support the scraper chain and prevent the scraper chain from jumping up and down and affecting the water surface fluctuation.

[0012] As a preferred embodiment of this utility model, the water collection trough is fixed to the primary sedimentation tank by a second bracket and is linearly arrayed on the primary sedimentation tank to fix and support the water collection trough.

[0013] As a preferred embodiment of this utility model, a third support is provided on the water collection tank, and a liquid level detection mechanism, which is an ultrasonic level gauge, is provided on the third support. A fourth support is provided on the water collection tank between the drain pipe and the liquid level detection mechanism, and an electric actuator is provided on the fourth support. A gate is provided at the end of the output shaft of the electric actuator. The electric actuator is a quasi-hyperboloid gear reducer motor. The water output can be adjusted by adjusting the gate through the electric actuator, thereby controlling the liquid level in the primary sedimentation tank and preventing the sludge scraping effect of the scraping mechanism from deteriorating due to changes in liquid level.

[0014] As a preferred technical solution of this utility model, the water collection tank is provided with guide grooves on both sides, and the gate is slidably connected to the inside of the guide grooves to guide the gate and make the up-and-down sliding more stable.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model replaces the original civil engineering structure water collection channel with the water collection mechanism. The water collection mechanism is equipped with the liquid level detection mechanism, which can adjust the outflow rate in real time according to the liquid level of the primary sedimentation tank, thereby ensuring that the liquid level in the primary sedimentation tank remains stable and preventing the sludge scraping effect from deteriorating due to changes in liquid level. Through the design of simple structure, reliable function and convenient maintenance, and the fact that the whole equipment is installed on the upper part of the tank, all inspection and maintenance operations can be carried out without cleaning the tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0017] Figure 2 This is an enlarged view of point A of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the slag scraping mechanism of this utility model;

[0020] Figure 5 This is an enlarged view of section B of the present invention;

[0021] Figure 6 This is a schematic diagram of the water collection mechanism of this utility model.

[0022] In the diagram: 1. Primary sedimentation tank; 101. Groove; 2. Sludge scraping mechanism; 201. Drive shaft; 202. Drive wheel; 203. Bearing seat; 204. Sludge scraping chain; 205. First support; 206. Sludge scraping plate; 2061. Fixing pin; 2062. Self-locking nut; 2063. Cotter pin; 3. Water collection mechanism; 301. Water collection trough; 302. Water collection hole; 303. Second support; 304. Third support; 305. Liquid level detection mechanism; 306. Fourth support; 307. Electric actuator; 308. Guide groove; 309. Gate; 4. Drive mechanism; 5. Drainage pipe. Detailed Implementation

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] like Figures 1 to 6 As shown, this utility model discloses a full-surface sludge scraper for a primary sedimentation tank. The technical solution includes a primary sedimentation tank 1, with four grooves 101 formed on the tank 1, mirror-imagely arranged on both sides. Bearing seats 203 are fixed within the grooves 101. A sludge scraping mechanism 2 is fixed to the primary sedimentation tank 1. The sludge scraping mechanism 2 includes a drive shaft 201, which rotates within the bearing seats 203. Drive wheels 202 are located on both sides of the drive shaft 201, and sludge scraping chains 204 mesh on the drive wheels 202. The scraper chain 204 has a scraper plate 206, and a fixing pin 2061 is provided on the scraper chain 204. The fixing pin 2061 has threads on its surface. The scraper plate 206 passes through the fixing pin 2061 and is fixed with a self-locking nut 2062. A cotter pin 2063 passes through the end of the fixing pin 2061. The primary sedimentation tank 1 has a drive mechanism 4, which is a drive motor. The output shaft of the drive motor is connected to the transmission shaft 201 through a chain and a sprocket. A first bracket 205 is provided between the scraper chains 204. The first bracket 205 gently drags the scraper chain 204. The first end of the first bracket 205 is fixed to the primary sedimentation tank 1. A water collection mechanism 3 is located on the left side of the scraper mechanism 2. The water collection mechanism 3 includes a water collection trough 301, which is fixed to the primary sedimentation tank 1 via a second bracket 303. The water collection trough 301 has a water collection hole 302. A drain pipe 5 is located on the leftmost side of the water collection trough 301, with the other end extending to the outside of the primary sedimentation tank 1. A third bracket 304 is located on the water collection trough 301, and a liquid level indicator is provided on the third bracket 304. The detection mechanism 305 is an ultrasonic level gauge. A fourth bracket 306 is provided between the level detection mechanism 305 and the drain pipe 5. An electric actuator 307 is provided on the fourth bracket 306. The electric actuator 307 is a hypoid gear reducer motor. The output shaft of the electric actuator 307 is connected to a gate 309. Guide grooves 308 are provided on both sides inside the water collection tank 301. The guide grooves 308 extend to the bottom of the water collection tank 301. The gate 309 is slidably connected to the inside of the guide grooves 308.

[0025] The working principle of this utility model is as follows: First, the drive mechanism 4 is started, causing the drive motor to drive the scraper chain 204, which in turn drives the scraper plate 206 to rotate counterclockwise. Figure 3 As shown, when the sewage level in the primary sedimentation tank 1 comes into contact with the scraper plate 206, the scraper plate 206 scrapes the scum to the opposite position of the water collection mechanism 3. The sewage treated by the primary sedimentation flows into the water collection tank 301 through the water collection hole 302 and is discharged from the primary sedimentation tank 1 through the drain pipe 5. The liquid level detection mechanism 305 measures the sewage level and controls the electric actuator 307 and the gate 309 in real time to adjust the drainage volume so that the liquid level in the primary sedimentation tank 1 remains unchanged and the liquid level is always kept at the optimal working position of the scraper mechanism 2.

[0026] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0027] Components not described in detail in this article are existing technologies.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A full-surface sludge scraper for a primary sedimentation tank, comprising a primary sedimentation tank (1), characterized in that: A sludge scraping mechanism (2) is provided above the primary sedimentation tank (1). The sludge scraping mechanism (2) includes a drive shaft (201), which is rotatably connected to the primary sedimentation tank (1). The end of the drive shaft (201) is connected to a drive mechanism (4), which is fixedly connected to the surface of the primary sedimentation tank (1) and mirror-mounted on the primary sedimentation tank (1). There are drive wheels (202) on both sides of the drive shaft (201). A sludge scraping chain (204) meshes on the drive wheels (202), and a sludge scraping plate (206) is connected to the sludge scraping chain (204). The sludge scraping mechanism (2) A water collection mechanism (3) is provided on the primary sedimentation tank (1) on the left side. The water collection mechanism (3) includes a water collection trough (301). A water collection hole (302) is opened on the water collection trough (301). A liquid level detection mechanism (305) is provided above the water collection trough (301). An electric actuator (307) is provided on the right side of the liquid level detection mechanism (305). A gate (309) is provided at the upper end of the output shaft of the electric actuator (307). A drain pipe (5) is provided at the bottom of the water collection trough (301) on the right side of the gate (309). The other end of the drain pipe (5) extends to the outside of the primary sedimentation tank (1).

2. The full-surface sludge scraper for a primary sedimentation tank according to claim 1, characterized in that: The primary sedimentation tank (1) has a groove (101) on its upper surface and a bearing seat (203) inside. The drive shaft (201) is rotatably connected to the primary sedimentation tank (1) through the bearing seat (203).

3. A full-surface sludge scraper for a primary sedimentation tank according to claim 1, characterized in that: The scraper chain (204) is provided with a fixing pin (2061), the fixing pin (2061) has threads, the scraper plate (206) passes through the fixing pin (2061) to the scraper chain (204) and is fixed by a self-locking nut (2062), and the fixing pin (2061) has a cotter pin (2063) at the end.

4. A full-surface sludge scraper for a primary sedimentation tank according to claim 3, characterized in that: Below the scraper chain (204) is a first bracket (205). There are two first brackets (205), which are mirror images of the two sides of the scraper chain (204). The first brackets (205) are fixed to the inside of the primary sedimentation tank (1).

5. A full-surface sludge scraper for a primary sedimentation tank according to claim 1, characterized in that: The water collection tank (301) is fixed to the primary sedimentation tank (1) by the second bracket (303) and is linearly arrayed on the primary sedimentation tank (1).

6. A full-surface sludge scraper for a primary sedimentation tank according to claim 5, characterized in that: The water collection tank (301) is provided with a third support (304), the third support (304) is provided with a liquid level detection mechanism (305), the water collection tank (301) between the drain pipe (5) and the liquid level detection mechanism (305) is provided with a fourth support (306), the fourth support (306) is provided with an electric actuator (307), and the output shaft end of the electric actuator (307) is provided with a gate (309).

7. A full-surface sludge scraper for a primary sedimentation tank according to claim 6, characterized in that: The water collection tank (301) has guide grooves (308) on both sides inside, and the gate (309) is slidably connected to the inside of the guide grooves (308).

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