Novel peripheral inlet and peripheral outlet scum discharge gate for secondary sedimentation tank

Abstract

The utility model discloses a novel peripheral-in peripheral-out scum discharging gate for a secondary sedimentation tank. The novel peripheral-in peripheral-out scum discharging gate comprises a hoist, a transmission screw, a base, a gate groove, a fixed baffle, a gate frame, a gate plate and the like. Frame type design is adopted for the gate, the flashboard is installed in the gate frame in a sliding mode, the gate frame is installed in the gate groove, the gate groove is installed in an installation groove reserved in the canal wall, the hoist drives the transmission screw to achieve ascending and descending of the flashboard, the slag blocking problem of a traditional downward opening type gate in the slag discharging process is effectively avoided, and the whole gate is made of stainless steel materials. The gate has the advantages of being high in corrosion resistance, stable in structure, convenient to install, safe and stable to use and the like, is suitable for occasions such as municipal sewage treatment plants where scum needs to be discharged, and can remarkably improve the scum discharging efficiency and the operation stability of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a novel slag discharge gate for a secondary sedimentation tank with a circular inlet and outlet. Background Art

[0002] With the rapid development of cities, sewage treatment plants have become an indispensable infrastructure in urban development and construction. At a time when urban land is becoming increasingly scarce, saving land resources is undoubtedly a practical issue that every construction unit must consider. The sedimentation tank is the main component of activated sludge sewage treatment technology. It is generally used to settle suspended matter or activated sludge in sewage to achieve the purpose of clarifying water quality. The most commonly used is the weekly secondary sedimentation tank. The weekly secondary sedimentation tank has a high sludge load and can obtain greater benefits with less land occupation. It is now being used more and more.

[0003] During the treatment process in the biochemical pool of a municipal sewage treatment plant, a large amount of scum is produced and enters the next treatment process - the secondary sedimentation tank with weekly inflow and outflow. The scum at the end of the inlet channel floats on the water surface and slowly gathers and accumulates to form a thick scum layer or even compaction. If it is not discharged in time, it will lead to uneven water distribution in the inlet channel, affecting the mud-water separation effect of the secondary sedimentation tank and causing the effluent from the secondary sedimentation tank to fail to meet the standards.

[0004] The existing conventional slag weir gate directly adopts a bottom-opening gate fixed in the water inlet channel. When the gate is opened, the gate frames on both sides and the middle screw block the flow of slag, resulting in poor slag discharge. Regular manual intervention is required for smooth slag discharge, which is very inconvenient and affects the operation of the equipment.

[0005] In summary, in view of the defects existing in the prior art, a new type of secondary sedimentation tank slag discharge device is particularly needed to solve the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a new type of circumferential inlet and outlet secondary sedimentation tank slag discharge gate, comprising:

[0007] The gate hoist, transmission screw and base, the gate hoist is installed on the base, the base is installed on the door slot through the fixed base plate, the transmission screw is matched with the gate hoist, the lower part of the transmission screw passes through the fixed base plate and is connected to the lifting lug, and the lifting lug is fixedly installed in the middle position of the top of the gate plate;

[0008] The gate plate and gate frame, the gate plate is slidably installed in the gate frame, and the gate frame is fixedly installed in the gate groove;

[0009] The door slot is embedded in the installation groove reserved on the channel wall;

[0010] Fixed baffle, which is installed at the bottom of the door groove.

[0011] As a preferred solution of the present invention, the door slot uses stainless steel as the overall frame, and the joints are sealed with rubber sealing strips to prevent leakage.

[0012] As a preferred solution of the present invention, the gate frame and gate plate are made of 304 stainless steel.

[0013] As a preferred solution of the present invention, the material of the transmission screw is 2Cr13.

[0014] As a preferred solution of the present invention, the fixed baffle is made of stainless steel 304 and has a height of 300-400 mm.

[0015] As a preferred solution of the present invention, two supporting cross bars are installed in the middle of the gate frame to enhance the stability of the gate frame.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] The utility model adopts a frame design, the gate plate is slidably installed in the gate frame, the gate frame is installed in the gate groove, and the gate groove is installed in the installation groove reserved on the channel wall. The gate plate is raised and lowered by the gate opening machine driving the transmission screw, which effectively avoids the problem of the traditional bottom-opening gate blocking the flow of slag due to the gate frame and the lead screw during the slag discharge process, ensuring the smooth discharge of slag. The main components of the gate, including the gate frame, gate plate, gate groove and fixed baffle, are made of metal material with high strength, capable of withstanding large water pressure and slag impact force, with excellent corrosion resistance, able to adapt to the complex chemical environment of the sewage treatment plant, and extending the service life of the equipment. A supporting cross bar is provided in the gate frame to enhance the stability of the gate frame. At the same time, the gate groove adopts stainless steel as the overall skeleton, and the joints are sealed with rubber sealing strips, which effectively prevent leakage problems and ensure the normal operation of the gate. The overall design of the gate is reasonable and the structure is compact, which is easy to install and maintain, reducing the construction difficulty and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation groove of the slag discharge gate of the present invention.

[0020] In the figure: 1. Gate hoist; 2. Base; 3. Fixed base plate; 4. Drive screw; 5. Door slot; 6. Lifting lug; 7. Gate plate; 8. Gate frame; 9. Fixed baffle; 10. Mounting groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1

[0023] like Figure 1 、 Figure 2 As shown, a specific embodiment of a novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate of the utility model includes:

[0024] The gate hoist 1, the transmission screw 4 and the base 2, the gate hoist 1 is installed on the base 2, the base 2 is installed on the gate groove 5 through the fixed base plate 3, the transmission screw 4 is matched with the gate hoist 1, the lower part of the transmission screw 4 passes through the fixed base plate 3 and is connected to the lifting lug 6, and the lifting lug 6 is fixedly installed in the middle position of the top of the gate plate 7; the total height of the gate hoist 1 and the base 2 is 800mm, ensuring that the gate has sufficient stability and stroke during operation;

[0025] The gate plate 7 and the gate frame 8, the gate plate 7 is slidably installed in the gate frame 8, and the gate frame 8 is fixedly installed in the door groove 5;

[0026] The door slot 5 is mounted in a mounting groove 10 reserved on the channel wall. The size of the mounting groove 10 is 50mmX100mm.

[0027] A fixed baffle 9 is installed at the bottom of the door groove 5 .

[0028] Two supporting cross bars are installed in the middle of the gate frame 8 to enhance the stability of the gate frame 8.

[0029] The door slot 5 uses stainless steel 304 as the overall skeleton, and its joints are sealed with rubber sealing strips to prevent leakage; the gate frame 8 and gate plate 7 are made of stainless steel 304, the material of the transmission screw 4 is 2Cr13, and the fixed baffle 9 is made of stainless steel 304. The height is 400mm, and other suitable heights can be selected according to the site conditions.

[0030] The gate adopts a frame design and is embedded in the pool wall, which avoids the problem of slag being blocked by the middle screw rod and the surrounding door frame when the valve plate opens downward, making it easier for the slag to be discharged.

[0031] The working principle of the utility model is as follows: when it is necessary to discharge scum, the transmission screw 4 is driven to rotate by a manual or electric hoist 1, so that the lifting lug 6 below the transmission screw 4 drives the gate plate 7 to slide up and down in the gate frame 8. When the gate plate 7 slides upward, the scum can be discharged smoothly from under the gate; when the gate plate 7 slides downward, the gate is closed to prevent water and scum from entering.

[0032] The gate frame 8 is installed in the gate groove 5, and the gate groove 5 is installed in the installation groove 10 reserved on the channel wall. The inlaid design of the gate avoids the problem of the traditional bottom-opening gate blocking the flow of slag due to the gate frame 8 and the screw during the slag discharge process. At the same time, the support cross bar in the gate frame 8 and the rubber sealing strip design of the gate groove 5 enhance the stability and sealing of the gate, ensuring the normal operation of the equipment.

[0033] The components in this article are all universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0034] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A new type of circumferential inlet and outlet secondary sedimentation tank slag discharge gate, characterized by: include: A gate hoist (1), a transmission screw (4) and a base (2), wherein the gate hoist (1) is mounted on the base (2), the base (2) is mounted on the door slot (5) via a fixed base plate (3), the transmission screw (4) is matched with the gate hoist (1), the lower portion of the transmission screw (4) passes through the fixed base plate (3) and is connected to a lifting lug (6), and the lifting lug (6) is fixedly mounted at the top middle position of the gate plate (7); A gate plate (7) and a gate frame (8), wherein the gate plate (7) is slidably mounted in the gate frame (8), and the gate frame (8) is fixedly mounted in the door groove (5); A door slot (5) is mounted in a mounting groove (10) reserved on the channel wall; A fixed baffle (9) is installed at the bottom of the door slot (5).

2. The novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate according to claim 1 is characterized by: The door slot (5) uses stainless steel as the overall frame, and its joints are sealed with rubber sealing strips to prevent leakage.

3. The novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate according to claim 1 is characterized by: The gate frame (8) and the gate plate (7) are made of 304 stainless steel.

4. The novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate according to claim 1 is characterized by: The material of the transmission screw (4) is 2Cr13.

5. The novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate according to claim 1 is characterized by: The fixed baffle (9) is made of stainless steel 304 and has a height of 300-400 mm.

6. The novel circumferential inlet and outlet secondary sedimentation tank slag discharge gate according to claim 1 is characterized by: Two supporting cross bars are installed in the middle of the gate frame (8) to enhance the stability of the gate frame (8).

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