Modularized sewage treatment equipment convenient to maintain

Abstract

The utility model provides modular sewage treatment equipment convenient to maintain, which relates to the technical field of sewage pretreatment, and comprises a pretreatment box, a telescopic cylinder, a cover plate, a liquid inlet channel, a lower pressing rod, a mounting channel, a supporting block, a fine filtering grid, a supporting frame and a coarse filtering grid, according to the modularized sewage treatment equipment, when the filtering grids in the pretreatment module of the modularized sewage treatment equipment need to be maintained and repaired, the filtering grids can be conveniently taken out, the pretreatment box does not need to be disassembled, and meanwhile, the coarse filtering grid and the fine filtering grid are arranged to respectively filter impurities with different sizes in sewage; the two filter grids are convenient to take out and are accurate and stable in mounting position, so that position deviation is avoided in the whole sewage pretreatment process, the maintenance flow of the modular sewage treatment equipment is optimized, and the modular sewage treatment equipment is convenient to operate.

Description

A modular wastewater treatment equipment that is easy to maintain Technical Field

[0001] This utility model relates to the field of wastewater pretreatment technology, and more specifically, to a modular wastewater treatment device that is easy to maintain. Background Technology

[0002] Modular wastewater treatment equipment is an integrated system that breaks down traditional wastewater treatment processes into multiple independent functional units and achieves flexible combination through standardized interfaces. It features scalability, easy maintenance, and strong adaptability. It mainly includes a pretreatment module, a biochemical treatment module, an advanced treatment module, and an emergency treatment module.

[0003] In modular wastewater treatment equipment, the pretreatment stage often requires frequent maintenance. Filter screens are widely used in wastewater pretreatment modules to filter out larger suspended solids in the wastewater, preventing them from entering the next stage and hindering subsequent wastewater treatment. When using filter screens for wastewater filtration, high-viscosity impurities in the wastewater adhere to the surface of the filter screen. After prolonged filtration, these impurities can clog the gaps in the filter screen, and the screen may also be partially damaged, requiring disassembly and repair. However, currently, filter screens cannot be easily removed during maintenance; the pretreatment tank must be disassembled first. Therefore, the maintenance process for modular wastewater treatment equipment needs improvement. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a modular sewage treatment device that is easy to maintain.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A modular wastewater treatment device that is easy to maintain includes a pretreatment tank with an outlet at the bottom, a telescopic cylinder, a cover plate, an inlet channel, a pressure rod, an installation channel, a support block, a fine filter screen, a support frame, and a coarse filter screen.

[0007] The telescopic cylinders are symmetrically fixed on the pretreatment box and operate synchronously.

[0008] The cover is connected to a telescopic cylinder and the cover is matched with the pretreatment box with an open top.

[0009] The liquid inlet channel is fixed to the cover plate and connects to the inside of the pretreatment tank;

[0010] The pressure rods are symmetrically fixed to the cover plate;

[0011] An installation channel that fits against the inner wall of the pretreatment box is fixed inside the pretreatment box;

[0012] Two L-shaped support blocks are fixed diagonally at the bottom of the installation channel.

[0013] The fine filter grid contacts the support block and fits against the inner wall of the installation channel;

[0014] The support frame, which is attached to the inner wall of the installation channel, is fixed on the fine filter grid, and the support frame is in contact with the coarse filter grid so that when the cover plate comes into contact with the pretreatment box, the position of the two filter grids in the installation channel is firmly defined by the pressure rod and the support block.

[0015] Furthermore, the coarse filter grid includes several sub-filter grids, and adjacent sub-filter grids are connected by a connecting component.

[0016] Furthermore, the connecting assembly includes an ear plate and fixing bolts.

[0017] Two adjacent sub-filter grids are symmetrically fixed with oppositely distributed and fitted ear plates, and the ear plates on the two adjacent sub-filter grids are locked in sequence by fixing bolts.

[0018] Furthermore, a transparent observation window is provided on the cover plate.

[0019] Furthermore, a sealing plate is fixedly installed on the liquid inlet channel, and the sealing plate is connected to the sewage pump through a hose, which in turn connects to the inside of the pretreatment tank.

[0020] Furthermore, the bottom end of the pressure rod and the surface of the support block are both provided with flexible pads, and the flexible pads are corrosion resistant.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Compared to existing technologies, this application allows for convenient removal of the filter screen in the pretreatment module of the modular wastewater treatment equipment when maintenance or repair is required, without disassembling the pretreatment box. Furthermore, the inclusion of both coarse and fine filter screens allows for the separate filtration of impurities of different sizes in the wastewater. The two filter screens are easy to remove while maintaining accurate and stable installation positions, preventing positional shifts during the entire wastewater pretreatment process. This optimizes the maintenance process of the modular wastewater treatment equipment and makes it easier to operate. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 is a schematic diagram of the support block installation;

[0025] Figure 3 is a schematic diagram of the placement of the fine filter grid;

[0026] Figure 4 is a schematic diagram of the support frame;

[0027] Figure 5 is a schematic diagram of the installation of the connecting components;

[0028] Figure 6 is a magnified view of part labeled A in Figure 5;

[0029] Figure 7 is a schematic diagram of the sealing plate installation;

[0030] Figure label:

[0031] 1. Pretreatment box; 101. Liquid outlet; 2. Telescopic cylinder; 3. Cover plate; 4. Liquid inlet channel; 5. Press rod; 6. Installation channel; 7. Support block; 8. Fine filter screen; 9. Support frame; 10. Coarse filter screen; 11. Sub-filter screen; 12. Ear plate; 13. Fixing bolt; 14. Sealing plate; 15. Hoses. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0033] As shown in Figures 1 to 4, a modular wastewater treatment device that is easy to maintain includes a pretreatment tank 1, with an outlet 101 at the bottom of the pretreatment tank 1, and also includes a telescopic cylinder 2, a cover plate 3, an inlet channel 4, a pressure rod 5, an installation channel 6, a support block 7, a fine filter screen 8, a support frame 9, and a coarse filter screen 10.

[0034] The telescopic cylinders 2 are symmetrically fixed on the pretreatment box 1 and operate synchronously.

[0035] The cover plate 3 is connected to the telescopic cylinder 2 and the cover plate 3 cooperates with the pretreatment box 1 with the top open;

[0036] The liquid inlet channel 4 is fixed on the cover plate 3 and connects to the inside of the pretreatment tank 1;

[0037] The pressure rods 5 are symmetrically fixed on the cover plate 3;

[0038] The installation channel 6, which fits against the inner wall of the pretreatment box 1, is fixed inside the pretreatment box 1;

[0039] Two L-shaped support blocks 7 are fixed diagonally at the bottom of the mounting channel 6;

[0040] The fine filter grid 8 contacts the support block 7 and fits against the inner wall of the installation channel 6;

[0041] The support frame 9, which is attached to the inner wall of the installation channel 6, is fixed on the fine filter grid 8, and the support frame 9 is in contact with the coarse filter grid 10 so that when the cover plate 3 comes into contact with the pretreatment box 1, the position of the two filter grids in the installation channel 6 is firmly defined by the pressure rod 5 and the support block 7.

[0042] To avoid the situation where the coarse filter screen 10 is damaged in some areas and needs to be replaced as a whole, the above embodiment is further refined as shown in Figures 5 and 6. The coarse filter screen 10 includes several sub-filter screens 11. Two adjacent sub-filter screens 11 are symmetrically fixed with ear plates 12 that are distributed opposite each other and fit together. The ear plates 12 on two adjacent sub-filter screens 11 are locked in sequence by fixing bolts 13.

[0043] To facilitate timely inspection of the surface of the coarse filter grid 10 from outside the pretreatment box 1 for clogging and damage, and to enable timely repair or replacement, a further optimization of the above embodiment is provided: a transparent observation window is provided on the cover plate 3, which is not shown in the figure.

[0044] In order to reduce the wear of the pressure rod 5 and the support block 7 when they come into contact with the coarse filter grid 10 and the fine filter grid 8 respectively, the above embodiment is further optimized by providing a flexible pad at the bottom of the pressure rod 5 and the surface of the support block 7, and the flexible pad is corrosion resistant.

[0045] It should be noted that the telescopic cylinder 2 is electrically connected to the controller. The controller is not shown in the figure and can be installed on the pretreatment box 1. The synchronization of the two telescopic cylinders 2 is pre-adjusted so that the cover plate 3 can be driven to move up and down synchronously.

[0046] The working process of this utility model is as follows:

[0047] First, wastewater is fed into the pretreatment tank 1 through the inlet channel 4. The wastewater then passes through the coarse filter screen 10 to filter out large floating objects and large hard materials. Next, it passes through the fine filter screen 8 to filter out fine fibers and tiny sand particles. Finally, the pretreated wastewater flows out from the outlet 101 for further processing.

[0048] As wastewater flows in for an extended period, sticky substances and impurities will accumulate on the two filter screens, necessitating maintenance and cleaning. To achieve this, the controller first operates the telescopic cylinder 2, which in turn drives the cover plate 3 away from the pretreatment tank 1. Once the cover plate 3 reaches the preset height, the staff can then remove the coarse filter screen 10 and the fine filter screen 8 from above the pretreatment tank 1 for maintenance. The support block 7 limits the placement area of ​​the fine filter screen 8, and the support frame 9 limits the placement area of ​​the coarse filter screen 10.

[0049] Since the coarse filter screen 10 comes into contact with the sewage first and the sewage initially contains large hard substances, the surface of the coarse filter screen 10 is easily damaged. When it is found that a certain area of ​​the coarse filter screen 10 is severely damaged, the fixing bolts 13 connected to the damaged area can be removed and the area can be disassembled and separated. Then, a complete sub-filter screen 11 can be reinstalled. In this way, the entire coarse filter screen 10 will not be thrown away directly, and the remaining intact areas can be reused.

[0050] After the maintenance and repair of the two filter screens are completed, the fine filter screen 8 and the coarse filter screen 10 are then placed into the installation channel 6 and reset. Finally, the telescopic cylinder 2 is retracted by the controller, so that the cover plate 3 re-contacts the upper surface of the pretreatment box 1 to achieve sealing. At the same time as sealing, the pressure rod 5 will contact the coarse filter screen 10, and together with the support block 7, the position of the two filter screens can be limited to prevent movement during the sewage pretreatment process, thus ensuring the stability of the sewage pretreatment filtration process.

[0051] To reduce the probability of wastewater splashing outwards when it is fed into the pretreatment tank 1, the above embodiment is further optimized as shown in Figure 7. A sealing plate 14 is fixed on the liquid inlet channel 4. The sealing plate 14 is connected to a wastewater pump fixed in another area through a hose 15. The hose 15 is connected to the inside of the pretreatment tank 1. The wastewater pump is connected to the wastewater pool. Neither the wastewater pump nor the wastewater pool is shown in the figure.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular wastewater treatment device that is easy to maintain, comprising a pretreatment tank (1), wherein the bottom of the pretreatment tank (1) is provided with an outlet (101), characterized in that, It also includes a telescopic cylinder (2), a cover plate (3), an inlet channel (4), a pressure rod (5), an installation channel (6), a support block (7), a fine filter grid (8), a support frame (9), and a coarse filter grid (10). The telescopic cylinder (2) is symmetrically fixed on the pretreatment box (1) and operates synchronously; the cover plate (3) is connected to the telescopic cylinder (2) and the cover plate (3) cooperates with the pretreatment box (1) which is open at the top; the inlet channel (4) is fixed on the cover plate (3) and connects to the inside of the pretreatment box (1); the pressure rod (5) is symmetrically fixed on the cover plate (3); and the installation channel (6) is attached to the inner wall of the pretreatment box (1). The installation channel (6) is fixed inside the pretreatment box (1); two L-shaped support blocks (7) are fixed diagonally at the bottom of the installation channel (6); the fine filter grid (8) is in contact with the support block (7) and fits against the inner wall of the installation channel (6); the support frame (9) which fits against the inner wall of the installation channel (6) is fixed on the fine filter grid (8), and the support frame (9) is in contact with the coarse filter grid (10) so that when the cover plate (3) comes into contact with the pretreatment box (1), the position of the two filter grids in the installation channel (6) is firmly defined by the pressure rod (5) and the support block (7).

2. The modular sewage treatment equipment for easy maintenance according to claim 1, characterized in that, The coarse filter grid (10) includes several sub-filter grids (11), and two adjacent sub-filter grids (11) are connected by a connecting component.

3. The modular sewage treatment equipment for easy maintenance according to claim 2, characterized in that, The connecting assembly includes ear plates (12) and fixing bolts (13). Two adjacent sub-filter grids (11) are symmetrically fixed with ear plates (12) that are distributed opposite each other and fit together. The ear plates (12) on two adjacent sub-filter grids (11) are locked in sequence by fixing bolts (13).

4. The modular sewage treatment equipment for easy maintenance according to claim 1, characterized in that, A transparent observation window is provided on the cover plate (3).

5. A modular wastewater treatment device for easy maintenance according to claim 1, characterized in that, A sealing plate (14) is fixed on the liquid inlet channel (4). The sealing plate (14) is connected to the sewage pump through a hose (15), and the hose (15) is connected to the inside of the pretreatment tank (1).

6. The modular wastewater treatment equipment for easy maintenance according to claim 1, characterized in that, The bottom end of the pressure rod (5) and the surface of the support block (7) are both provided with flexible pads, and the flexible pads are corrosion resistant.

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