Drinking water purification pretreatment equipment
By using a detachable semi-tank design and a multi-layer filter screen structure, the problems of difficult maintenance and uneven filtration in existing equipment are solved, enabling convenient maintenance and efficient filtration, and improving the equipment's sealing performance and service life.
Patent Information
- Application Number
- CN202520255835.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing drinking water purification pretreatment equipment has a fixed structure, which is inconvenient to disassemble and maintain, has high maintenance costs, and is difficult to effectively filter impurities of different sizes in layers.
It adopts a detachable half-tank design for conveying, and is equipped with multi-layer filter screens and sealing mechanisms. It is connected by fixing bolts and uses EPDM rubber sealing strips to ensure airtightness, achieving layered filtration and convenient maintenance.
This enables convenient disassembly and maintenance of the equipment, improves filtration efficiency and structural stability, and ensures the equipment's sealing performance and service life.
Smart Images

Figure CN223831887U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drinking water treatment technology, and in particular to a drinking water purification pretreatment device. Background Technology
[0002] Drinking water purification is a crucial step in ensuring safe drinking water for residents. Pretreatment, as the first and most important step in the entire purification process, plays a vital role. Pretreatment aims to remove large particulate impurities, suspended solids, and some colloids from the water, reducing the burden on subsequent deep purification treatments and improving overall purification efficiency and water quality.
[0003] Most drinking water purification pretreatment equipment currently on the market has a fixed structure, making it inconvenient to disassemble and maintain. Once internal components malfunction, repairs are difficult and costly. In addition, a single filtration structure is insufficient for effective stratified filtration of impurities of different sizes. Therefore, we propose a drinking water purification pretreatment equipment to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and to propose a drinking water purification pretreatment device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A drinking water purification pretreatment device includes two conveying half-tanks, which are detachably connected by a plurality of fixing bolts, and a pretreatment mechanism is provided inside each conveying half-tank.
[0007] The pretreatment mechanism includes multiple mounting semi-ring blocks fixedly installed on the inner side wall of the conveying semi-tank. The inner side wall of the mounting semi-ring blocks is provided with mounting semi-ring grooves. The same fixed ring block is slidably connected to the inner side wall of two mounting semi-ring grooves in the same layer. A filter screen is fixedly installed on the inner side wall of the fixed ring block. The filter pore diameter of the filter screen gradually decreases from top to bottom.
[0008] Preferably, two reinforcing frames are fixedly installed on the inner sidewall of the mounting semi-ring block, and the two reinforcing frames are symmetrically arranged on both sides of the mounting semi-ring groove.
[0009] Preferably, the vertical distance between the two mounting semi-ring blocks located on the same conveying semi-tank is the same.
[0010] Preferably, an extended semicircular block is fixedly installed at both the top and bottom of the conveying semi-tank.
[0011] Preferably, the two conveying half-tanks are connected by a sealing mechanism, which includes two sealing strips fixedly installed on the outer wall of one of the conveying half-tanks, and two sealing grooves opened on the outer wall of the other conveying half-tank, with the outer walls of the adjacent sealing strips and the inner walls of the sealing grooves slidably connected.
[0012] Preferably, the two sealing strips are symmetrically arranged on the outer wall of one of the conveying half-tanks, and the two sealing grooves are symmetrically arranged on the outer wall of the other conveying half-tank.
[0013] Preferably, the sealing strip is made of EPDM rubber.
[0014] The beneficial effects of this utility model are as follows:
[0015] Through the interaction of the conveying half-tank, fixing bolts, pretreatment mechanism, and sealing mechanism, the conveying half-tank can be detachably connected, facilitating equipment assembly, maintenance, and component replacement. The pretreatment mechanism uses multiple layers of filter screens with different pore sizes, which can filter impurities of different sizes in layers, greatly improving the pretreatment effect. The reinforcing frame and uniform spacing design of the mounting half-ring block enhance structural stability and filtration uniformity. The sealing strips and sealing grooves in the sealing mechanism ensure that the equipment maintains good sealing performance and extends its service life. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a drinking water purification pretreatment device proposed in this utility model;
[0017] Figure 2 This is a side view of the conveying half-tank in a drinking water purification pretreatment device proposed in this utility model;
[0018] Figure 3 This is a top view of the two conveying half-tanks after separation in a drinking water purification pretreatment device proposed in this utility model.
[0019] In the diagram: 1. Conveying half-tank; 2. Fixing bolts; 3. Installing semi-ring block; 4. Installing semi-ring groove; 5. Fixing ring block; 6. Filter screen; 7. Reinforcing frame; 8. Extending semi-circular block; 9. Sealing strip; 10. Sealing groove. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figure 3A drinking water purification pretreatment device includes two conveying half-tanks 1, which are detachably connected by multiple fixing bolts 2.
[0022] To further explain, the connection via fixing bolt 2 facilitates the assembly and disassembly of the equipment, and makes it convenient for the installation, maintenance, and replacement of components of the internal pretreatment mechanism.
[0023] like Figure 1 and Figure 2 As shown, a pretreatment mechanism is provided inside the conveying half-tank 1; the pretreatment mechanism includes multiple mounting half-ring blocks 3 fixedly installed on the inner side wall of the conveying half-tank 1, mounting half-ring grooves 4 are opened on the inner side wall of the mounting half-ring blocks 3, and the same fixed ring block 5 is slidably connected on the inner side wall of two mounting half-ring grooves 4 in the same layer, and a filter screen plate 6 is fixedly installed on the inner side wall of the fixed ring block 5, and the filter hole diameter of the filter screen plate 6 gradually decreases from top to bottom.
[0024] To further explain, this structural design enables layered filtration of drinking water, with filter screens 6 of different pore sizes intercepting impurities of different sizes in sequence, thus improving the pretreatment effect.
[0025] like Figure 3 As shown, two reinforcing frames 7 are fixedly installed on the inner wall of the mounting semi-ring block 3, and the two reinforcing frames 7 are symmetrically arranged on both sides of the mounting semi-ring groove 4.
[0026] To further explain, this design strengthens the structure of the installed semi-ring block 3, thereby improving the support stability of the fixed ring block 5 and the filter screen 6, making the entire pretreatment mechanism more stable during operation and less prone to loosening of components due to water flow impact or other reasons.
[0027] like Figure 1 As shown, the vertical distance between the two mounting semi-ring blocks 3 located on the same conveying semi-tank 1 is the same.
[0028] To further explain, this design ensures that the spacing between each layer of filter screen 6 is uniform, making the flow rate and filtration conditions of the water relatively stable when passing through each layer of filter screen 6, which helps to improve the uniformity and stability of filtration and further enhance the pretreatment effect.
[0029] like Figure 2 As shown, extended semicircular blocks 8 are fixedly installed on the top and bottom of the conveying semi-tank 1.
[0030] To elaborate further, this may increase the flexibility or adaptability of connecting the semi-tank 1 to other components. On the other hand, during the overall assembly of the equipment, extending the semi-circular block 8 may serve to position the components or strengthen the connection stability.
[0031] like Figure 2 and Figure 3 As shown, the two conveying half-tanks 1 are connected by a sealing mechanism. The sealing mechanism includes two sealing strips 9 fixedly installed on the outer wall of one of the conveying half-tanks 1, and two sealing grooves 10 are opened on the outer wall of the other conveying half-tank 1. The outer walls of adjacent sealing strips 9 and the inner walls of sealing grooves 10 are slidably connected.
[0032] To further explain, the cooperation between the sealing strip 9 and the sealing groove 10 can effectively prevent water from leaking from the connection between the two conveying half-tanks 1 during the drinking water pretreatment process, ensuring the sealing of the equipment and ensuring that the pretreatment work proceeds normally.
[0033] like Figure 2 and Figure 3 As shown, two sealing strips 9 are symmetrically arranged on the outer wall of one of the conveying half-tanks 1, and two sealing grooves 10 are symmetrically arranged on the outer wall of the other conveying half-tank 1.
[0034] To further explain, this symmetrical design makes the sealing structure more balanced, resulting in a better sealing effect and avoiding local leakage caused by uneven sealing.
[0035] like Figure 3 As shown, the sealing strip 9 is made of EPDM rubber.
[0036] To further explain, EPDM rubber has excellent aging resistance, water resistance, and chemical corrosion resistance, which enables it to maintain good sealing performance in the environment of drinking water pretreatment equipment for a long time, extend the service life of the sealing mechanism, and reduce the risk of leakage caused by problems such as aging of the sealing strip.
[0037] The functional principle of this utility model can be explained through the following operation methods:
[0038] Equipment installation and connection
[0039] Align the two conveying half-tanks 1 so that the sealing strip 9 on one of the conveying half-tanks 1 is aligned with the sealing groove 10 on the other conveying half-tank 1. Then push slowly to ensure that the sealing strip 9 slides completely into the sealing groove 10 to achieve a tight fit and ensure the sealing of the connection.
[0040] Using multiple fixing bolts 2, pass them through the corresponding bolt holes on the two conveying half-tanks 1 in sequence, and use appropriate tools to gradually tighten the fixing bolts 2 in a diagonal crisscross manner to firmly connect the two conveying half-tanks 1 together.
[0041] Based on the actual layout of the drinking water pipeline, connect the extended semicircular blocks 8 at the top and bottom of the equipment to the corresponding pipe connection components, and use matching connectors (such as pipe joints, sealing rings, etc.) to ensure a firm and leak-proof connection, thus completing the connection between the equipment and the entire water supply system.
[0042] Water filtration
[0043] Open the inlet valve connected to the equipment to allow the drinking water to flow slowly into the equipment. The water first enters the conveying half-tank 1, which contains the pretreatment mechanism. Inside the conveying half-tank 1, the water flows from top to bottom, passing through filter plates 6 with different pore sizes in sequence. The uppermost filter plate 6 has relatively large pores, initially intercepting larger impurities in the water, such as silt and particulate matter. As the water continues to flow downwards, it gradually passes through filter plates 6 with progressively smaller pore sizes, further removing smaller impurities such as suspended solids and colloids, thus completing the pretreatment of the drinking water.
[0044] After pretreatment, the water flows out from the outlet at the bottom of the equipment and is transported to subsequent water treatment stages or directly to users through the connected outlet pipe.
[0045] Equipment maintenance and cleaning
[0046] Regularly check the equipment's operation. After the equipment has been running for a period of time, the filtration efficiency may decrease due to the large amount of impurities trapped by the filter screen 6. At this time, the equipment needs to be cleaned and maintained. Close the inlet and outlet water pipe valves, remove the fixing bolts 2, and separate the two conveying half-tanks 1.
[0047] Slide the retaining ring 5 along with the filter screen 6 out of the mounting semi-ring groove 4. Rinse the filter screen 6 with clean water to remove any attached impurities. For stubborn impurities that are difficult to clean, you can gently brush them with a soft brush, but be careful not to damage the filter screen 6.
[0048] After cleaning, reinstall the filter screen 6 and fixing ring block 5 back into the installation semi-ring groove 4 in the reverse order of disassembly, ensuring that the installation is secure and the position is accurate. Then reassemble the two conveying semi-tanks 1, connect the pipeline, and it can be put into use again.
[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A drinking water purification pretreatment device, comprising two conveying half-tanks (1), characterized in that, The two conveying half-tanks (1) are detachably connected by a plurality of fixing bolts (2), and a pretreatment mechanism is provided inside the conveying half-tank (1); The pretreatment mechanism includes multiple mounting semi-ring blocks (3) fixedly installed on the inner wall of the conveying semi-tank (1). The inner wall of the mounting semi-ring block (3) is provided with mounting semi-ring grooves (4). The inner walls of two mounting semi-ring grooves (4) in the same layer are slidably connected to the same fixed ring block (5). The inner wall of the fixed ring block (5) is fixedly installed with a filter screen plate (6). The filter hole diameter of the filter screen plate (6) gradually decreases from top to bottom.
2. The drinking water purification pretreatment equipment according to claim 1, characterized in that, Two reinforcing frames (7) are fixedly installed on the inner wall of the installation semi-ring block (3), and the two reinforcing frames (7) are symmetrically arranged on both sides of the installation semi-ring groove (4).
3. The drinking water purification pretreatment equipment according to claim 1, characterized in that, The vertical distance between the two mounting semi-ring blocks (3) located on the same conveying semi-tank (1) is the same.
4. The drinking water purification pretreatment equipment according to claim 1, characterized in that, The top and bottom of the conveying half-tank (1) are both fixedly installed with extended semicircular blocks (8).
5. The drinking water purification pretreatment equipment according to claim 1, characterized in that, The two conveying half-tanks (1) are connected by a sealing mechanism, which includes two sealing strips (9) fixedly installed on the outer wall of one of the conveying half-tanks (1) and two sealing grooves (10) opened on the outer wall of the other conveying half-tank (1). The outer walls of the adjacent sealing strips (9) and the inner walls of the sealing grooves (10) are slidably connected.
6. The drinking water purification pretreatment equipment according to claim 5, characterized in that, The two sealing strips (9) are symmetrically arranged on the outer wall of one of the conveying half tanks (1), and the two sealing grooves (10) are symmetrically arranged on the outer wall of the other conveying half tank (1).
7. The drinking water purification pretreatment equipment according to claim 5, characterized in that, The sealing strip (9) is made of EPDM rubber.