Sludge discharge device for sewage treatment

Abstract

The utility model discloses a sludge discharge device for sewage treatment, which comprises a treatment pond, the bottom of the treatment pond is connected with a sludge discharge hopper, the top of the treatment pond is arranged in a conical funnel shape, the lower part of the treatment pond is fixedly connected with a hanger plate, two groups of plugging devices are arranged on the hanger plate, and the plugging devices are arranged on the hanger plate. A support is fixedly connected to the side wall of the treatment tank and extends upwards to the position above the treatment tank, and a sludge scraping device is arranged on the support and used for scraping and falling off sludge at the bottom of the treatment tank. The utility model belongs to the technical field of sewage sludge discharge, and particularly relates to a sludge discharge device for sewage treatment, which is used for solving the problems of high energy consumption, quick part abrasion and high part replacement frequency in mechanical sludge discharge in the prior art.

Description

A sludge removal device for sewage treatment Technical Field

[0001] This utility model belongs to the field of sewage sludge discharge technology, specifically referring to a sludge discharge device for sewage treatment. Background Technology

[0002] In the wastewater treatment process, "sludge discharge" refers to the operation of periodically discharging the sludge (including suspended solids, microbial metabolites, organic matter and inorganic matter) that has settled and accumulated in the treatment system. The purpose is to maintain the efficient operation of the treatment equipment, prevent excessive sludge accumulation from affecting the treatment effect, and avoid anaerobic fermentation that produces odors or causes abnormal system operation.

[0003] The most common existing technology is mechanical sludge removal, which uses a chain to drive a scraper to scrape the sludge in the sewage tank into a sludge collection hopper before sludge discharge. However, this method has some drawbacks: mechanical sludge removal consumes a lot of energy; the chain, gears, bearings and other components are in long-term contact with sludge and are prone to severe wear; and the frequency of component replacement and maintenance is high. Therefore, improvements are needed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is that the existing technology of mechanical sludge removal has high energy consumption, rapid wear of parts, and high frequency of parts replacement.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: a sludge discharge device for sewage treatment includes a treatment tank, a sludge discharge hopper connected to the bottom of the treatment tank, a cone-shaped funnel at the top of the treatment tank, a hanging plate fixed to the lower part of the treatment tank, two sets of sealing devices provided on the hanging plate, a support fixed to the side wall of the treatment tank and extending upward to the top of the treatment tank, and a sludge scraping device provided on the support to scrape off the sludge at the bottom of the treatment tank.

[0006] Furthermore, the sealing device includes an electric push rod two, which is fixedly connected to the hanging plate. The output of the electric push rod two is fixedly connected to a sealing plate and inserted into the sludge discharge hopper. An end plate is fixedly connected to the end of the sealing plate. A sliding rod is fixedly connected to the hanging plate and passes through the end plate and is fixedly connected to the outer wall of the sludge discharge hopper. By setting two sets of sealing plates at the top and bottom, it can be ensured that when the upper sealing plate is sealed, the lower sealing plate opens to discharge sludge without affecting the downward flow of sewage in the treatment tank.

[0007] Furthermore, the sludge scraping device includes a motor, the output end of which is connected to a connecting plate one. An electric push rod one is fixedly connected to the lower end face of the connecting plate one. The output end of the electric push rod one is fixedly connected to a connecting plate two. Several sets of guide rods are arranged in a circular array on the upper end face of the connecting plate two and extend upward through the connecting plate one. A connecting shaft is fixedly connected to the lower end of the connecting shaft. A support rod is fixedly connected to the lower end of the support rod. A scraper is fixedly connected to the other end of the support rod. The scraper can scrape off the sludge at the bottom of the treatment tank. When the scraper rotates, the sludge flows down the slope at the bottom of the treatment tank into the sludge discharge hopper.

[0008] Furthermore, the scraper can completely conform to the conical surface of the bottom wall of the treatment tank during its descent to ensure thorough scraping.

[0009] Furthermore, the guide rod will not detach from the connecting disc when the scraper is attached to the bottom wall of the treatment tank.

[0010] The beneficial effects achieved by adopting the above-described structure are as follows:

[0011] 1. This utility model uses a sealing device to push the sealing plate through an electric push rod to seal the inside of the sludge discharge hopper. When the lower sealing plate is closed, the upper sealing plate is open, allowing sludge to accumulate. When the lower sealing plate is open, the upper sealing plate is closed, allowing the sludge in the sludge discharge hopper to be discharged downwards without affecting the large-scale flow of sewage in the treatment tank.

[0012] 2. This utility model, by setting up a sludge scraping device, pushes the connecting plate two with an electric push rod one, so that the scraper is attached to the treatment tank. Driven by the motor, the scraper scrapes off the sludge accumulated on the bottom wall of the treatment tank and flows into the sludge discharge hopper. The solution of this application has a simple structure, does not require frequent maintenance, and can also ensure the cleaning effect of sludge. Attached Figure Description

[0013] Figure 1 is an overall structural diagram of a sludge removal device for sewage treatment according to this utility model;

[0014] Figure 2 is a structural diagram of the internal structure of the treatment tank of a sludge removal device for sewage treatment according to this utility model.

[0015] Figure 3 is a cross-sectional view of the sludge discharge hopper of a sludge discharge device for sewage treatment according to this utility model;

[0016] Figure 4 is a magnified view of part A in Figure 3.

[0017] Among them, 1. Treatment tank, 2. Sludge discharge hopper, 3. Hanging plate, 4. Sealing device, 5. Support, 6. Sludge scraping device, 7. Electric push rod II, 8. Sealing plate, 9. End plate, 10. Sliding rod, 11. Motor, 12. Connecting plate I, 13. Electric push rod I, 14. Connecting plate II, 15. Guide rod, 16. Coupling shaft, 17. Support rod, 18. Scraper. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] As shown in Figures 1-4, this utility model discloses a sludge removal device for sewage treatment, including a treatment tank 1, a sludge removal hopper 2 connected to the bottom of the treatment tank 1, a cone-shaped funnel at the top of the treatment tank 1, a hanging plate 3 fixed to the lower part of the treatment tank 1, two sets of sealing devices 4 installed on the hanging plate 3, a support 5 fixed to the side wall of the treatment tank 1 and extending upward to the top of the treatment tank 1, and a sludge scraping device 6 installed on the support 5 to scrape off and remove the sludge at the bottom of the treatment tank 1.

[0021] As shown in Figures 1-4, the sealing device 4 includes an electric push rod 7, which is fixedly connected to the hanging plate 3. The output of the electric push rod 7 is fixedly connected to the sealing plate 8 and inserted into the sludge discharge hopper 2. The end of the sealing plate 8 is fixedly connected to the end plate 9. The hanging plate 3 is fixedly connected to the sliding rod 10, which passes through the end plate 9 and is fixedly connected to the outer wall of the sludge discharge hopper 2. By setting two sets of sealing plates 8 at the top and bottom, it can be ensured that when the upper sealing plate 8 is sealed, the lower sealing plate 8 opens to discharge sludge without affecting the downward flow of sewage in the treatment tank 1.

[0022] As shown in Figures 1-3, the sludge scraping device 6 includes a motor 11. The output end of the motor 11 is connected to a connecting plate 12. An electric push rod 13 is fixedly connected to the lower end face of the connecting plate 12. The output end of the electric push rod 13 is fixedly connected to a connecting plate 2 14. Several sets of guide rods 15 are arranged in a circular array on the upper end face of the connecting plate 2 14 and extend upward through the connecting plate 12. A connecting shaft 16 is fixedly connected to the lower end face of the connecting shaft 16. A support rod 17 is fixedly connected to the lower end of the support rod 17. A scraper 18 is fixedly connected to the other end of the support rod 17. The scraper 18 can completely fit the conical surface of the bottom wall of the treatment tank 1 during the descent process to ensure that the sludge is scraped clean. When the scraper 18 fits against the bottom wall of the treatment tank 1, the guide rods 15 will not detach from the connecting plate 12. When the scraper 18 rotates, the sludge flows along the inclined surface at the bottom of the treatment tank 1 into the sludge discharge hopper 2.

[0023] In actual use, under normal circumstances, due to the sedimentation of sludge, a portion of the sludge will flow down the bottom wall of the treatment tank 1 in a funnel shape into the sludge discharge hopper 2. At this time, the upper sealing plate 8 is in the open state, and the lower sealing plate 8 is in the closed state.

[0024] When it is necessary to discharge sludge from treatment tank 1, by activating electric push rod 13, connecting plate 14 moves down, scraper 18 adheres to the bottom wall of treatment tank 1, guide rod 15 slides in connecting plate 12, and by activating motor 11, connecting plate 12 drives connecting plate 14 to rotate synchronously. The scraper 18 can scrape off the sludge on the bottom wall of treatment tank 1 and flow into sludge discharge hopper 2 along the bottom wall of treatment tank 1.

[0025] Then, by activating the upper electric push rod 27, the sealing plate 8 is used to seal the sludge discharge hopper 2. Then, the lower sealing plate 8 is opened by pulling the electric push rod 27, so that the sludge in the sludge discharge hopper 2 can be discharged, and the sewage in the treatment tank 1 will not flow out.

[0026] The proposed solution has a simple structure, requires no frequent maintenance, and has a good sludge removal effect, making it worthy of promotion.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sludge removal device for wastewater treatment, characterized in that: The treatment tank (1) is connected to a sludge discharge hopper (2) at its bottom. The top of the treatment tank (1) is set in a cone-shaped funnel. A hanging plate (3) is fixed to the lower part of the treatment tank (1). Two sets of sealing devices (4) are set on the hanging plate (3). A bracket (5) is fixed to the side wall of the treatment tank (1) and extends upward to the top of the treatment tank (1). A sludge scraping device (6) is set on the bracket (5). The sludge scraping device (6) is used to scrape the sludge at the bottom of the treatment tank (1).

2. The sludge removal device for wastewater treatment according to claim 1, characterized in that: The sealing device (4) includes an electric push rod (7), which is fixed to the hanging plate (3). Its output end is fixed to a sealing plate (8) and inserted into the mud discharge hopper (2). The end of the sealing plate (8) is fixed to an end plate (9), and a sliding rod (10) is fixed to the hanging plate (3). The sliding rod (10) passes through the end plate (9) and is fixed to the outer wall of the mud discharge hopper (2). The two sets of sealing plates (8) are arranged vertically and vertically for alternating sealing and opening of the mud discharge hopper (2).

3. The sludge removal device for wastewater treatment according to claim 1, characterized in that: The sludge scraping device (6) includes a motor (11), a connecting plate one (12), an electric push rod one (13), a connecting plate two (14), and a scraper (18); the output end of the motor (11) is connected to the connecting plate one (12), the lower end face of the connecting plate one (12) is fixed to the electric push rod one (13), the output end of the electric push rod one (13) is fixed to the connecting plate two (14), the upper end face of the connecting plate two (14) has a plurality of guide rods (15) arranged in a circular array, and the guide rods (15) pass through the connecting plate one (12); the lower end face of the connecting plate two (14) is fixed to the connecting shaft (16), the lower end of the connecting shaft (16) is fixed to the support rod (17), and the other end of the support rod (17) is fixed to the scraper (18).

4. A sludge removal device for wastewater treatment according to claim 3, characterized in that: The scraper (18) is fully attached to the conical wall at the bottom of the treatment tank (1) under the drive of the electric push rod (13).

5. A sludge removal device for wastewater treatment according to claim 3, characterized in that: The length of the guide rod (15) is set such that when the scraper (18) is in contact with the bottom wall of the treatment tank (1), the guide rod (15) does not detach from the connecting plate (12).

6. A sludge removal device for wastewater treatment according to claim 2, characterized in that: When the upper sealing plate (8) is sealed, the lower sealing plate (8) is opened to discharge sludge; when the lower sealing plate (8) is sealed, the upper sealing plate (8) is opened to accumulate sludge.

7. A sludge removal device for wastewater treatment according to any one of claims 1 and 6, characterized in that: The outlet shape of the mud discharge hopper (2) matches the cross-sectional shape of the sealing plate (8) to achieve sealing.

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