A purification device for power plant wastewater treatment

Abstract

The utility model relates to a kind of purification device of power plant wastewater treatment, including: outer tube, its inside both ends are provided with guide sleeve, the outer peripheral wall of two guide sleeves is collectively provided with filter cylinder that can slide along its axial direction, the outer peripheral wall of filter cylinder is provided with separation net, the top of filter cylinder is provided with support spring, the top of support spring is fixedly connected with the inner top wall of outer tube.The utility model relates to the technical field of power plant wastewater treatment equipment.A kind of purification device of power plant wastewater treatment, realizes basic filtration by the difference between inside and outside static pressure of filter cylinder, and high-pressure air is pumped by inlet pump and shunt cavity, when air pressure reaches threshold value, filter cylinder is lifted, high-pressure airflow is released instantaneously, can effectively increase filtration pressure difference, improve instantaneous filtration efficiency, while strongly agitate sewage, prevent sludge settlement, ensure that filter cylinder periphery load is uniform, prevent the formation of local blockage from dynamic level, to realize the purpose of improving filtration effect and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of power plant wastewater treatment equipment, and in particular to a purification device for power plant wastewater treatment. Background Technology

[0002] Power plants generate a large amount of wastewater during the production process. This wastewater contains high concentrations of solid sludge, ash and other impurities. Therefore, filtration is one of the key steps in power plant wastewater treatment, and its core purpose is to separate the solid suspended matter in the wastewater.

[0003] Currently, most common filtration devices use fixed filter screens or filter cartridges. When wastewater passes through the filter screen, solid impurities are trapped, while clean water passes through, achieving separation. However, in actual operation, solid sludge quickly adheres to and clogs the filter pores on the filter screen surface, causing a sharp increase in filtration resistance and a significant decrease in treatment efficiency. To avoid complete clogging of the filter screen, the filtration process must be frequently interrupted for backwashing or disassembly and cleaning. This not only increases energy consumption and operational complexity but also reduces the continuous operation capability of the equipment, affecting the efficiency of the entire water treatment system. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a purification device for power plant wastewater treatment, so as to solve the technical problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A purification device for power plant wastewater treatment includes:

[0007] The outer cylinder has guide sleeves at both ends inside. The outer peripheral walls of the two guide sleeves are fitted with a filter cylinder that can slide along its axial direction. The outer peripheral wall of the filter cylinder is equipped with a separation screen. The top of the filter cylinder is equipped with a support spring, and the top of the support spring is fixedly connected to the inner top wall of the outer cylinder.

[0008] The bottom of the filter cartridge is provided with several pressure plates arranged in a ring array. The end of the pressure plate is provided with a sealing plug. The bottom of the outer cylinder is provided with several air inlet pipes corresponding to the positions of the sealing plugs. Under normal conditions, the support spring presses down on the filter cartridge to make the sealing plugs seal the top of the air inlet pipes.

[0009] The bottom of the air inlet pipe is connected to a flow divider chamber, which is connected to an air inlet pump. A drain pipe connected to the inside of the filter cylinder is located at the center of the top of the outer cylinder, and a water inlet pipe is located on the side wall of the top of the outer cylinder.

[0010] Furthermore, the separation network includes:

[0011] A connecting ring is fixed to the inner top wall of the outer cylinder. The bottom end of the connecting ring is connected to multiple cleaning rings via several connecting rods. The cleaning rings are sleeved on the outside of the filter cylinder and located between two adjacent filter holes.

[0012] Furthermore, the filter cylinder and the inner wall of the outer cylinder are kept apart to form an annular cavity, and the position of the annular cavity corresponds to the position of the water inlet pipe.

[0013] Furthermore, the sum of the elastic force of the support spring and the weight of the filter cartridge and its accessories is greater than the upward force exerted by the gas in the diversion chamber on the sealing plug under normal conditions.

[0014] Furthermore, the number of the air intake pipes is the same as the number of the pressure plates and the sealing plugs.

[0015] Furthermore, the bottom end of the sealing plug is tapered and made of corrosion-resistant rubber.

[0016] In summary, this utility model has at least one of the following beneficial technical effects:

[0017] 1. This purification device for power plant wastewater treatment achieves basic filtration through the static pressure difference between the inside and outside of the filter cartridge. High-pressure air is pumped in through the air inlet pump and the diversion chamber. When the air pressure reaches the threshold, it lifts the filter cartridge and releases the high-pressure airflow instantly, which can effectively increase the filtration pressure difference and improve the instantaneous filtration efficiency. At the same time, it strongly agitates the sewage, prevents sludge from settling, and ensures that the load around the filter cartridge is uniform. From a dynamic perspective, it prevents the formation of local blockage, thereby achieving the purpose of improving filtration effect and efficiency.

[0018] 2. This purification device for power plant wastewater treatment, when the filter cylinder moves up and down with changes in air pressure, the fixed cleaning ring scrapes against the outer wall of the moving filter cylinder, removing the sludge attached to the filter screen. This achieves a continuous, passive self-cleaning function, enabling simultaneous efficiency improvement and filter screen cleaning without interrupting the filtration process, significantly improving the continuous working capacity and maintenance convenience of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a purification device for treating power plant wastewater according to the present invention.

[0021] Figure 2This is a schematic diagram of the internal structure of a purification device for treating power plant wastewater according to the present invention.

[0022] Figure 3 This is a schematic diagram of the guide sleeve of a purification device for power plant wastewater treatment according to the present invention.

[0023] Figure 4 This is a schematic diagram of the separation screen structure of a purification device for power plant wastewater treatment according to this utility model.

[0024] Figure 5 This is a schematic diagram of the filter cylinder of a purification device for treating power plant wastewater according to the present invention.

[0025] In the diagram, 1 is the outer cylinder; 2 is the guide sleeve; 3 is the filter cylinder; 4 is the separation screen; 41 is the connecting ring; 42 is the cleaning ring; 5 is the support spring; 6 is the pressure plate; 7 is the sealing plug; 8 is the air inlet pipe; and 9 is the flow divider. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example:

[0028] Reference Figure 1 - Figure 5 The present invention discloses a purification device for treating power plant wastewater, comprising:

[0029] The outer cylinder 1 has guide sleeves 2 at both ends inside. The outer peripheral walls of the two guide sleeves 2 are fitted with a filter cylinder 3 that can slide along its axial direction. The outer peripheral wall of the filter cylinder 3 is provided with a separation screen 4. The top of the filter cylinder 3 is provided with a support spring 5. The top of the support spring 5 is fixedly connected to the inner top wall of the outer cylinder 1.

[0030] The bottom end of the filter cylinder 3 is provided with several pressure plates 6 arranged in a ring array. The end of the pressure plate 6 is provided with a sealing plug 7. The bottom end of the outer cylinder 1 is provided with several air inlet pipes 8 corresponding to the positions of the sealing plugs 7. Under normal conditions, the support spring 5 presses down on the filter cylinder 3 to make the sealing plugs 7 seal the top of the air inlet pipes 8.

[0031] The bottom end of the air inlet pipe 8 is connected to the diversion chamber 9, which is connected to the air inlet pump. The top center of the outer cylinder 1 is provided with a drain pipe that communicates with the inside of the filter cylinder 3, and the top side wall of the outer cylinder 1 is provided with a water inlet pipe.

[0032] In this embodiment, during operation, muddy wastewater is injected into the annular cavity between the outer cylinder 1 and the outer wall of the filter cylinder 3 through the inlet pipe. Under the action of static pressure difference, the water flows through the mesh of the filter cylinder 3 and enters its interior, while the solid sludge is trapped on the outer wall of the filter cylinder 3. The purified water is collected inside the filter cylinder 3 and discharged through the drain pipe at the top.

[0033] At the same time, after the air pump starts and pumps air into the diversion chamber 9, the air pressure in the chamber gradually increases. When the upward force generated by the air pressure on the sealing plug 7 is sufficient to overcome the elasticity of the support spring 5 and the weight of the filter cylinder 3 assembly, the sealing plug 7 is lifted up, and the filter cylinder 3 as a whole compresses the support spring 5 and slides upward. As the high-pressure gas rushes into the bottom of the outer cylinder 1, it not only increases the driving force in the filtration process and improves the filtration efficiency, but also generates a strong stirring effect on the sewage in the cylinder, preventing sludge from settling at the bottom, ensuring uniform pressure around the filter cylinder 3, and avoiding local blockage.

[0034] When the intake pump stops working intermittently, the air pressure in the diversion chamber 9 drops, the support spring 5 pushes the filter cylinder 3 to reset downwards, and the sealing plug 7 re-seals the intake pipe 8. As the filter cylinder 3 moves up and down, its outer wall scrapes against the cleaning ring 42, thereby automatically removing the sludge attached to the filter screen, keeping the filter channel unobstructed, achieving continuous and efficient self-cleaning filtration, and significantly reducing the maintenance frequency and operating costs.

[0035] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the separation net 4 includes:

[0036] A connecting ring 41 is fixed to the inner top wall of the outer cylinder 1. The bottom end of the connecting ring 41 is connected to a plurality of cleaning rings 42 by several connecting rods. The cleaning rings 42 are sleeved on the outside of the filter cylinder 3 and located between two adjacent filter holes.

[0037] In this embodiment, multiple cleaning rings 42 are fixedly connected to the connecting ring 41 by a connecting rod, and their positions correspond to the gap between the filter holes of the filter cylinder 3. When the filter cylinder 3 slides up and down under the action of air pressure and spring, its outer wall and the inner wall of these stationary cleaning rings 42 generate relative movement. The inner wall of the cleaning rings 42 is in contact with the outer wall of the filter cylinder 3. Therefore, during the movement of the filter cylinder 3, the sludge blocking the filter holes and adhering to the outer wall of the filter cylinder 3 can be effectively scraped off, and the permeability of the filter cylinder 3 can be continuously maintained.

[0038] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the filter cylinder 3 is spaced apart from the inner wall of the outer cylinder 1 to form an annular cavity, and the position of the annular cavity corresponds to the position of the water inlet pipe.

[0039] In this embodiment, the design of the annular cavity ensures the uniformity of water distribution. After the sewage is injected from the inlet pipe, it first enters this annular buffer space and evenly surrounds the filter cylinder 3. This allows the entire outer surface of the filter cylinder 3 to participate in the filtration process evenly, improving the effective utilization rate of the filtration area and avoiding the problems of local overload and premature clogging caused by uneven water intake. This improves the overall filtration efficiency and the working stability of the device.

[0040] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the sum of the elastic force of the support spring 5 and the weight of the filter cylinder 3 and its auxiliary components is greater than the upward force exerted by the gas in the diversion chamber 9 on the sealing plug 7 under normal conditions.

[0041] In this embodiment, the support spring 5 ensures that the sealing plug 7 can reliably seal the air inlet pipe 8 when the air pump is not started or the air pressure has not reached the set threshold, preventing backflow of unfiltered sewage or gas leakage, thus ensuring the sealing of the device and the normal operation of the initial filtration. After the air pump builds up sufficient air pressure, the filter cylinder 3 is lifted, causing the gas to form a high-pressure jet, which can effectively agitate the sludge and produce a better cleaning and anti-settling effect than continuous ventilation.

[0042] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the number of air intake pipes 8 is the same as the number of pressure plates 6 and sealing plugs 7.

[0043] In this embodiment, a symmetrical array arrangement of multiple air inlet pipes 8 and sealing plugs 7 is adopted, which is conducive to the balanced distribution of pressure. When the airflow bursts, multiple points simultaneously push the filter cylinder 3 upward, ensuring that the filter cylinder 3 is subjected to uniform force and moves smoothly without tilting or jamming. Furthermore, the multi-point air intake allows the compressed air to diffuse more quickly and evenly to the entire area at the bottom of the outer cylinder 1, thereby achieving all-round and dead-angle agitation of the sewage, further improving the anti-settling and filtration effects.

[0044] In a further preferred embodiment of this utility model, such as Figure 5 As shown, the bottom end of the sealing plug 7 is tapered and made of corrosion-resistant rubber.

[0045] In this embodiment, the conical design of the sealing plug 7 makes it easier and more precise to introduce and seal the air inlet pipe 8, improving the reliability of the seal and the accuracy of the reset. The use of corrosion-resistant rubber, such as nitrile rubber and fluororubber, ensures the elasticity and sealing performance of the seal, and can effectively resist the erosion of chemicals, oils and other components that may be contained in the power plant wastewater, extending the service life of key sealing elements, ensuring the long-term sealing effectiveness of the device, and reducing maintenance costs.

[0046] The implementation principle of the above embodiment is as follows: basic filtration is achieved through the static pressure difference between the inside and outside of the filter cylinder 3, and high-pressure air is pumped in through the air inlet pump and the diversion chamber 9. When the air pressure reaches the threshold, the filter cylinder 3 is lifted, and the high-pressure airflow is released instantly, which can effectively increase the filtration pressure difference and improve the instantaneous filtration efficiency. At the same time, the sewage is strongly agitated to prevent sludge from settling and ensure that the load around the filter cylinder 3 is uniform. This prevents the formation of local blockage from a dynamic perspective. Furthermore, when the filter cylinder 3 moves up and down with the change of air pressure, the fixed cleaning ring 42 scrapes against the outer wall of the moving filter cylinder 3, removing the sludge attached to the filter screen. This achieves a continuous and passive self-cleaning function, enabling simultaneous efficiency improvement and filter screen cleaning without interrupting the filtration process. This significantly improves the continuous working capacity and maintenance convenience of the equipment.

[0047] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A purification device for treating power plant wastewater, characterized in that, Including: The outer cylinder (1) has guide sleeves (2) at both ends inside. The outer peripheral walls of the two guide sleeves (2) are fitted with a filter cylinder (3) that can slide along its axial direction. The outer peripheral wall of the filter cylinder (3) is fitted with a separation screen (4). The top of the filter cylinder (3) is fitted with a support spring (5). The top of the support spring (5) is fixedly connected to the inner top wall of the outer cylinder (1). The bottom end of the filter cylinder (3) is provided with several pressure plates (6) arranged in a ring array. The end of the pressure plate (6) is provided with a sealing plug (7). The bottom end of the outer cylinder (1) is provided with several air inlet pipes (8) corresponding to the position of the sealing plug (7). Under normal conditions, the support spring (5) presses down the filter cylinder (3) to make the sealing plug (7) seal the top of the air inlet pipe (8). The bottom end of the air inlet pipe (8) is connected to the diversion chamber (9), the diversion chamber (9) is connected to the air inlet pump, the top center of the outer cylinder (1) is provided with a drain pipe that communicates with the inside of the filter cylinder (3), and the top side wall of the outer cylinder (1) is provided with a water inlet pipe.

2. The purification device for power plant wastewater treatment according to claim 1, characterized in that, The separation network (4) includes: A connecting ring (41) is fixed to the inner top wall of the outer cylinder (1). The bottom end of the connecting ring (41) is connected to a number of cleaning rings (42) by several connecting rods. The cleaning rings (42) are sleeved on the outside of the filter cylinder (3) and located between two adjacent filter holes.

3. The purification device for power plant wastewater treatment according to claim 2, characterized in that, The filter cylinder (3) is spaced apart from the inner wall of the outer cylinder (1) to form an annular cavity, and the position of the annular cavity corresponds to the position of the water inlet pipe.

4. The purification device for power plant wastewater treatment according to claim 3, characterized in that, The sum of the elastic force of the support spring (5) and the weight of the filter cylinder (3) and its auxiliary components is greater than the upward force exerted by the gas in the diversion chamber (9) on the sealing plug (7) under normal conditions.

5. The purification device for power plant wastewater treatment according to claim 4, characterized in that, The number of intake pipes (8) is the same as the number of pressure plates (6) and sealing plugs (7).

6. The purification device for power plant wastewater treatment according to claim 5, characterized in that, The bottom end of the sealing plug (7) is tapered and made of corrosion-resistant rubber.

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