Sludge reflux device capable of keeping sludge activity

Abstract

The utility model discloses a sludge reflux device capable of keeping sludge activity, and relates to the technical field of sludge reflux. The device comprises a reflux pump, one end of the reflux pump is connected with an output pipe, and one end of the output pipe is fixedly connected with a filtering device. The reflux pump is connected with the filtering device through the output pipe, so that when sludge needs to be subjected to reflux treatment, suction force is generated through the reflux pump and then is output into the filtering device; the driving device is matched to drive the spinning assembly to rotate, so that water in the sludge is separated into the filtering device after centrifugal force is generated by the internal sludge, and the pushing assembly is matched to intermittently push the elastic sealing assembly to intermittently open the air inlet in the process of rotating for a circle; oxygen enters the filtering device and is mixed with the sludge along with rotary stirring of the spinning assembly, so that water can be filtered in the sludge backflow process, and the activity of the sludge can be kept after oxygen is added and mixed.

Description

Technical Field

[0001] This utility model belongs to the field of sludge recirculation technology, and more specifically, it relates to a sludge recirculation device that maintains the activity of sludge. Background Technology

[0002] In the field of wastewater treatment, sludge treatment is a crucial link, and its effective management directly affects the overall operational efficiency and treatment effect of wastewater treatment plants. Sludge return is a core process in the activated sludge process, aiming to maintain the balance of microbial communities within the system, enhance biological treatment capacity, and promote the degradation of pollutants by returning a portion of the treated sludge to the aeration tank or the front end of the reactor.

[0003] In the prior art, a search of Chinese patent number CN202311318132.4 discloses a sludge thickening and reflux separation device and a wastewater treatment system, comprising: a separation cylinder having a first end and a second end opposite to each other along the axial direction of the separation cylinder, and an inner cavity inside the separation cylinder. An impeller is disposed in the inner cavity, and the impeller includes a first fixed part, a second fixed part, and a plurality of blades. The outer edge of the blades has a radial distance from the inner wall surface of the separation cylinder on a first surface. The blades include blades fixedly connected between the first fixed part and the second fixed part. A feed pipe is located at the first end of the separation cylinder.

[0004] When treating sludge, a return pump is usually used. However, since the sludge still contains some water after treatment, and the lack of oxygen during the return process can cause the sludge to lose its activity and decompose, a large amount of sludge is prone to clogging during the return process, which reduces the return rate.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a sludge return device to maintain the activity of sludge, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a sludge recirculation device for maintaining sludge activity, comprising a recirculation pump, one end of which is connected to an output pipe, and one end of which is fixedly connected to a filter device. The filter device has an outlet on its inner wall, an oxygen inlet pipe is inserted into the top of the filter device, a drive device is provided on the top of the filter device, a spinning assembly is fixedly installed at the output end of the drive device, a push assembly is fixedly connected to the output end of the drive device, an air inlet is provided on the top of the filter device, and an elastic sealing assembly is fixedly connected to the top inside the filter device.

[0009] Furthermore, the filtration device includes a filter cylinder, the inner wall of which is provided with a filter plate, and a mud outlet pipe is fixedly connected to the outer surface of the filter cylinder. The spinning assembly extends into the interior of the filter cylinder.

[0010] Furthermore, the driving device includes a drive motor, the output end of which is fixedly connected to an output shaft, and the output shaft is fixedly connected to a spinning assembly.

[0011] Furthermore, the spinning assembly includes a rotating cylinder, a spinning plate fixedly connected to the outer surface of the rotating cylinder, and a swirl plate fixedly connected to the outer surface of the rotating cylinder, the swirl plate being evenly distributed on the outer surface of the rotating cylinder.

[0012] Furthermore, the push assembly includes a push rod, one end of which is fixedly connected to a push column, and the bottom of the filter cartridge is fixedly connected to a guide pipe.

[0013] Furthermore, the elastic sealing assembly includes a sealing plug, and spring posts are fixedly connected to both sides of the sealing plug, with the spring posts being fixedly connected to the top inside the filter cartridge.

[0014] Furthermore, an arc-shaped inner baffle is fixedly connected to the top of the filter plate, and the arc-shaped inner baffle is symmetrically arranged on the top of the filter plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model connects the return pump to the filter device through the output pipe. When sludge needs to be returned, the return pump generates suction force and outputs it into the filter device. The drive device drives the swirl assembly to rotate, causing the sludge inside to generate centrifugal force and separating the water into the filter device. In addition, the push assembly intermittently pushes the elastic sealing assembly during one revolution, causing it to intermittently open the air inlet, so that oxygen enters the filter device and mixes with the sludge along with the rotation and stirring of the swirl assembly. This allows the sludge to filter water and increase oxygen mixing during the return process, thus maintaining the activity of the sludge and preventing putrefaction.

[0017] 2. This utility model uses a drive motor and output shaft to rotate the spinning plate and sludge plate, which allows the sludge to move quickly after entering the filter cartridge, increasing the rate of water separation and oxygen mixing, thus maintaining its activity during the reflux process. The bottom of the sealing plug is wedge-shaped, and the top of the push column is also wedge-shaped. When the push column rotates to contact the bottom of the sealing plug, the oblique surface of the push column contacts the sealing plug, and the spring column is pushed and stretched in the opposite direction, so that the sealing plug is disengaged from below the air inlet. After the push column continues to rotate and disengages from the bottom of the sealing plug, the spring column rebounds and drives the sealing plug to reset, completing a single air intake action. This allows oxygen to enter the filter cartridge intermittently and mix with the sludge, keeping the sludge active.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, 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 the 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 three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the filter cartridge of this utility model;

[0023] Figure 4 This is a schematic diagram of the spinning plate structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the filter plate structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the sealing plug structure of this utility model;

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1. Return pump; 2. Output pipe; 3. Filter device; 4. Outlet; 5. Oxygen inlet pipe; 6. Drive device; 7. Spinning assembly; 8. Pushing assembly; 9. Air inlet; 10. Elastic sealing assembly; 301. Filter cylinder; 302. Filter plate; 303. Sludge outlet pipe; 601. Drive motor; 602. Output shaft; 701. Rotary drum; 702. Spinning plate; 703. Sludge swirl plate; 801. Pushing rod; 802. Pushing column; 304. Guide pipe; 1011. Sealing plug; 1012. Spring column; 305. Arc-shaped inner baffle. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-6 As shown, this utility model is a sludge recirculation device for maintaining sludge activity, including a recirculation pump 1. One end of the recirculation pump 1 is connected to an output pipe 2. One end of the output pipe 2 is fixedly connected to a filter device 3. The inner wall of the filter device 3 has an outlet 4. An oxygen inlet pipe 5 is inserted into the top of the filter device 3. A drive device 6 is provided on the top of the filter device 3. A spinning assembly 7 is fixedly installed on the output end of the drive device 6. A pushing assembly 8 is fixedly connected to the output end of the drive device 6. An air inlet 9 is provided on the top of the filter device 3. An elastic sealing assembly 10 is fixedly connected to the top inside the filter device 3.

[0031] When sludge needs to be returned, it is connected to the return pump 1 through the output pipe 2. After the return pump 1 is started, the internal suction force is generated to pump the treated sludge into the output pipe 2. The pressurized sludge is then output through the output pipe 2 to the front part of the filter device 3. At this time, the drive device 6 is started to drive the swirl assembly 7 to rotate, so as to drive the sludge inside to move. The continuous rotation of the swirl assembly 7 drives the sludge to generate centrifugal force. At the same time, the water contained in it is blocked inside the filter device 3 and flows downward, thus isolating the sludge from the water. At the same time, the push assembly 8 pushes the elastic sealing assembly 10 intermittently to open the air inlet 9 after the drive device 6 rotates, so that the oxygen inside the oxygen inlet pipe 5 is delivered to the inside of the filter device 3. The oxygen is then mixed with the sludge by the swirl assembly 7 and driven to flow out to the outlet 4.

[0032] This invention connects the return pump 1 to the filter device 3 via the output pipe 2. When sludge needs to be returned, the return pump 1 generates suction force and outputs the sludge into the filter device 3. The drive device 6 drives the spinning assembly 7 to rotate, causing centrifugal force to separate the water from the sludge and bring it into the filter device 3. During one revolution of the push assembly 8, the elastic sealing assembly 10 is intermittently pushed, causing the air inlet 9 to open intermittently, so that oxygen enters the filter device 3 and mixes with the sludge along with the rotation and stirring of the spinning assembly 7. This allows the sludge to filter water and increase oxygen mixing during the return process, thus maintaining the activity of the sludge and preventing putrefaction.

[0033] In one embodiment, the above-mentioned filtration device 3 includes a filter cylinder 301, a filter plate 302 is provided on the inner wall of the filter cylinder 301, a mud outlet pipe 303 is fixedly connected to the outer surface of the filter cylinder 301, and the spinning assembly 7 extends into the interior of the filter cylinder 301.

[0034] By setting a filter plate 302 at the bottom of the filter cylinder 301, when the sludge enters the filter cylinder 301, it flows onto the filter plate 302. With the rotation of the swirl assembly 7, the sludge moves on the filter plate 302. As the sludge is pushed by the swirl assembly 7, the water in it is squeezed out and gradually filtered out through the filter plate 302. Finally, the active sludge is discharged through the sludge outlet pipe 303.

[0035] In one embodiment, the driving device 6 includes a drive motor 601, the output end of which is fixedly connected to an output shaft 602, and the output shaft 602 is fixedly connected to the spinning assembly 7.

[0036] When the drive motor 601 is started, it drives the output shaft 602 to rotate, thereby causing the output shaft 602 to drive the spinning assembly 7 to rotate. At the same time, the top push assembly 8 is driven to rotate as well, thus providing it with operating driving force.

[0037] In one embodiment, the spinning assembly 7 includes a rotating cylinder 701, a spinning plate 702 fixedly connected to the outer surface of the rotating cylinder 701, and a swirl plate 703 fixedly connected to the outer surface of the rotating cylinder 701, the swirl plate 703 being evenly distributed on the outer surface of the rotating cylinder 701.

[0038] When the drive motor 601 starts, it works with the output shaft 602 to drive the rotating drum 701 to rotate, thereby driving the swirl plate 702 to rotate on the top of the filter plate 302. When the sludge enters, it is driven by the swirl plate 702 to rotate on the top of the filter plate 302, generating centrifugal force and mixing with the oxygen entering from the top. At the same time, the sludge swirl plate 703 at the upper position stirs and disperses the sludge to accelerate the loss and separation of water.

[0039] The drive motor 601, in conjunction with the output shaft 602, drives the swirl plate 702 and the sludge swirl plate 703 to rotate. This allows the sludge to move quickly after entering the filter cartridge 301, increasing the rate of water separation and oxygen mixing, thus maintaining its activity during the reflux process.

[0040] In one embodiment, the push assembly 8 includes a push rod 801, one end of which is fixedly connected to a push column 802, and the bottom of the filter cylinder 301 is fixedly connected to a guide pipe 304.

[0041] The push column 802 and the sealing position of the elastic sealing assembly 10 are on the same circumference. When the output shaft 602 drives the push rod 801 to rotate, the push rod 801 drives the push column 802 to rotate, so that the push column 802 pushes the elastic sealing assembly 10 to rotate elastically and open the air inlet 9. When the push column 802 continues to rotate, its top end disengages from the elastic sealing assembly 10. According to its own elasticity, the elastic sealing assembly 10 automatically resets to the sealing position, so that oxygen intermittently enters the interior of the filter cartridge 301 to mix with the sludge and prevents excessive consumption of oxygen resources.

[0042] In one embodiment, the elastic sealing assembly 10 includes a sealing plug 1011, and spring posts 1012 are fixedly connected to both sides of the sealing plug 1011. The spring posts 1012 are fixedly connected to the top inside the filter cartridge 301.

[0043] The bottom of the sealing plug 1011 is wedge-shaped, and the top of the pusher 802 is also wedge-shaped. When the pusher 802 rotates to contact the bottom of the sealing plug 1011, after their oblique surfaces contact, the sealing plug 1011 is pushed and the spring column 1012 is pulled in the opposite direction, so that the sealing plug 1011 is removed from below the air inlet 9. Until the pusher 802 continues to rotate and removes from the bottom of the sealing plug 1011, the spring column 1012 rebounds and drives the sealing plug 1011 to reset, thus completing a single air intake action. This allows oxygen to intermittently enter the filter cartridge 301 and mix with the sludge, keeping the sludge active.

[0044] In one embodiment, for the filter plate 302, an arc-shaped inner baffle 305 is fixedly connected to the top of the filter plate 302, and the arc-shaped inner baffle 305 is symmetrically arranged on the top of the filter plate 302.

[0045] By setting an arc-shaped inner baffle 305 at the top of the filter plate 302, the flow space at the bottom inside the filter cylinder 301 is reduced, and the inner wall of the arc-shaped inner baffle 305 is provided with filter holes, which can increase the flow channel of water in the sludge and make the sludge dewatering effect better.

[0046] Through the above technical solution, 1. The return pump 1 is connected to the filter device 3 through the output pipe 2. When sludge needs to be returned, the return pump 1 generates suction force and outputs it into the filter device 3. The drive device 6 drives the swirl assembly 7 to rotate, causing the sludge inside to generate centrifugal force and separating the water into the filter device 3. In addition, the push assembly 8 intermittently pushes the elastic sealing assembly 10 during one revolution, causing it to intermittently open the air inlet 9, so that oxygen enters the filter device 3 and mixes with the sludge along with the rotation and stirring of the swirl assembly 7. This allows the sludge to filter water and increase oxygen mixing during the return process, so that the sludge can maintain its activity and prevent putrefaction; 2. The drive motor 601 and the output shaft 602 work together to drive the swirl plate 702 and the sludge swirl plate 70 3. The filter cartridge 301 is rotated so that the sludge can be moved quickly after entering the filter cartridge 301, thereby increasing the rate of water separation and oxygen mixing, and thus maintaining its activity during the reflux process. The bottom of the sealing plug 1011 is wedge-shaped, and the top of the push column 802 is also wedge-shaped. When the push column 802 rotates to contact the bottom of the sealing plug 1011, the oblique surfaces of the two surfaces make contact, and the sealing plug 1011 is pushed and the spring column 1012 is pulled in the opposite direction, so that the sealing plug 1011 is disengaged from the bottom of the air inlet 9. After the push column 802 continues to rotate and disengage from the bottom of the sealing plug 1011, the spring column 1012 rebounds and drives the sealing plug 1011 to reset, thus completing a single air intake action. This allows oxygen to enter the filter cartridge 301 intermittently and mix with the sludge, keeping the sludge active.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sludge recirculation device for maintaining sludge activity, comprising a recirculation pump (1), characterized in that: One end of the reflux pump (1) is connected to an output pipe (2), and one end of the output pipe (2) is fixedly connected to a filter device (3). The inner wall of the filter device (3) is provided with an outlet (4). An oxygen inlet pipe (5) is inserted into the top of the filter device (3). A drive device (6) is provided on the top of the filter device (3). A spinning assembly (7) is fixedly installed at the output end of the drive device (6). A push assembly (8) is fixedly connected to the output end of the drive device (6). An air inlet (9) is provided on the top of the filter device (3). An elastic sealing assembly (10) is fixedly connected to the top inside the filter device (3).

2. The sludge recirculation device for maintaining sludge activity according to claim 1, characterized in that, The filtration device (3) includes a filter cylinder (301), the inner wall of the filter cylinder (301) is provided with a filter plate (302), the outer surface of the filter cylinder (301) is fixedly connected with a mud outlet pipe (303), and the spinning assembly (7) extends into the interior of the filter cylinder (301).

3. The sludge recirculation device for maintaining sludge activity according to claim 1, characterized in that, The driving device (6) includes a drive motor (601), and the output end of the drive motor (601) is fixedly connected to an output shaft (602), which is fixedly connected to the spinning assembly (7).

4. The sludge recirculation device for maintaining sludge activity according to claim 3, characterized in that, The spinning assembly (7) includes a rotating cylinder (701), a spinning plate (702) is fixedly connected to the outer surface of the rotating cylinder (701), and a swirl plate (703) is fixedly connected to the outer surface of the rotating cylinder (701). The swirl plate (703) is evenly distributed on the outer surface of the rotating cylinder (701).

5. A sludge recirculation device for maintaining sludge activity according to claim 2, characterized in that, The push assembly (8) includes a push rod (801), one end of which is fixedly connected to a push column (802), and the bottom of the filter cylinder (301) is fixedly connected to a guide pipe (304).

6. A sludge recirculation device for maintaining sludge activity according to claim 1, characterized in that, The elastic sealing assembly (10) includes a sealing plug (1011), and spring posts (1012) are fixedly connected to both sides of the sealing plug (1011). The spring posts (1012) are fixedly connected to the top inside the filter cartridge (301).

7. A sludge recirculation device for maintaining sludge activity according to claim 2, characterized in that, An arc-shaped inner baffle (305) is fixedly connected to the top of the filter plate (302), and the arc-shaped inner baffle (305) is symmetrically arranged on the top of the filter plate (302).

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