Double-form spiral plate shell filtering device
By designing a dual-type spiral plate filter device, efficient filtration of heating water is achieved, solving the problems of dirt adhesion and plate heat exchanger blockage, improving heat exchange efficiency and equipment life, and reducing operating and maintenance costs.
Patent Information
- Application Number
- CN202423117981.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing coarse filtration devices cannot effectively solve the problems of dirt adhesion and plate heat exchanger blockage in heating water, resulting in decreased heat exchange efficiency, increased operating costs and maintenance difficulties.
A dual-type spiral plate filter device was designed, comprising a main chamber and a secondary chamber, with guide rails and a wire mesh woven core inside, to achieve two-stage filtration, removing large particles and tiny contaminants respectively, and separating and removing gases and impurities through an exhaust valve and a drain port.
It improves filtration accuracy, reduces pressure drop, extends equipment life, reduces maintenance frequency and costs, and ensures stable system operation.
Smart Images
Figure CN223586685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration device technology, specifically a dual-type spiral plate shell filtration device. Background Technology
[0002] Heating requires a large amount of water resources, so people reduce water consumption by recycling heating water. However, heating water produces a lot of scale and sediment after being heated in the heating tank. During transportation in the pipes, due to pipe aging and other factors such as contamination, a large amount of pollutants accumulate in the heating water. Rust in the pipes can also cause bacteria to multiply, leading to the growth of algae. Over time, this will not only block the heating device and affect its heating effect, but the large number of bacteria will also accelerate the corrosion of the heating equipment. Therefore, when using circulating water for heating, the circulating water needs to be treated to extend the service life of the heating equipment.
[0003] In the process of developing this utility model, the inventors discovered the following problems with existing technologies: Existing coarse filters can only remove large stones, debris, and larger particles, but this cannot truly solve the problems of fouling or clogging of plate heat exchangers. Data shows that when the fouling thickness reaches 1mm, the heat exchange efficiency of a plate heat exchanger decreases by 30%. To compensate for the heat loss caused by this decrease in efficiency, the inlet water temperature must be passively increased, which is a huge waste of energy and operating costs. Furthermore, increasing the supply water temperature may also have other potential impacts on the primary side equipment, adding further burdens to the system. In addition, severe clogging of plate heat exchangers not only reduces the heat exchange rate and increases costs during operation, but also makes the annual cleaning process very troublesome. Besides incurring considerable labor and cleaning chemical costs, the difficulty and long cleaning cycle are also significant issues. Currently, most heat exchange stations have relatively compact spaces, making plate heat exchanger maintenance extremely difficult, time-consuming, and labor-intensive. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a dual-type spiral plate and shell filter device. This solves the problem that existing coarse filters can only remove large stones, debris, and larger particles, but this does not truly solve the problems of fouling or clogging of plate heat exchangers. Data shows that when the fouling thickness reaches 1mm, the heat exchange efficiency of a plate heat exchanger decreases by 30%. To compensate for the heat loss caused by the decreased efficiency, the inlet water temperature must be passively increased, which is a huge waste of energy and operating costs. Furthermore, increasing the supply water temperature may also have other potential impacts on the primary side equipment, adding additional burdens to the system. In addition, severe clogging of the plate heat exchanger not only reduces the heat exchange rate and increases costs during operation, but also makes the annual maintenance cleaning work very troublesome. Besides incurring considerable labor and cleaning chemical costs, the difficulty and long cleaning cycle are also significant issues. Currently, most heat exchange stations have relatively compact spaces, making plate heat exchanger maintenance space very limited. Cleaning plate heat exchangers in such a confined space is extremely difficult, time-consuming, and labor-intensive.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-type spiral plate filter device, comprising a main box, two pairs of support legs on the lower wall of the main box, a secondary box connected to the side wall of the main box, an inlet flange on one side wall of the secondary box, an outlet flange on the other side wall of the main box, a sludge removal port on the side wall of the secondary box directly below the inlet flange, a first drain port at the bottom of the secondary box, a second drain port at the bottom of the main box, guide rails connecting the inner walls of the secondary box, filter plates installed in the guide rails, and several wire mesh woven cores connecting the upper and lower walls of the main box.
[0006] Preferably, the upper wall of the main box is provided with an exhaust valve.
[0007] Preferably, a maintenance flange is provided on one side wall of the outlet flange.
[0008] Preferably, both the first and second drain outlets are equipped with valves.
[0009] Preferably, the plurality of wire mesh braided cores are arranged alternately, and all of the plurality of wire mesh braided cores are vertical straight cylinders.
[0010] Beneficial effects
[0011] This invention provides a dual-form spiral plate filter device. The dual-form filtration structure achieves a dirt removal accuracy of 5 microns, completely solving problems such as scaling and clogging of plate heat exchangers, and related issues like cleaning and maintenance. It boasts the lowest pressure drop ratio among similar products, with a maximum pressure drop not exceeding 18 kPa. It effectively removes air bubbles and air masses from the circulation system, maintaining optimal heat transfer. This extends equipment lifespan, solves oxygen corrosion and pump cavitation problems, and ensures noiseless system operation. It significantly shortens the initial water filling time after system start-up without the need for venting or additional exhaust valves, preventing unnecessary system downtime. It is widely applicable to different pressures, temperatures, and materials, providing an optimal operating environment and ensuring the system and equipment perform at their best. The dual-function spiral exhaust and dirt collection device integrates exhaust and dirt collection functions, and can also discharge dirt during system operation. After system filling with water, it quickly exhausts and stabilizes pressure with minimal pressure loss. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a schematic diagram of the wire mesh braided core structure of this utility model.
[0014] Figure 3 This is a schematic diagram of the arrangement of the wire mesh braided core of this utility model.
[0015] In the diagram: 1. Outlet flange; 2. Inlet flange; 3. Main tank; 4. Auxiliary tank; 5. Air vent valve; 6. Support leg; 7. First drain outlet; 8. Second drain outlet; 9. Sludge removal port; 10. Filter plate; 11. Guide rail; 12. Wire mesh braided core; 13. Maintenance flange. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: a dual-type spiral plate shell filter device, including a main box 3, the lower wall of the main box 3 is provided with two pairs of support legs 6, the side wall of the main box 3 is connected to a secondary box 4, one side wall of the secondary box 4 is provided with an inlet flange 2, the other side wall of the main box 3 is provided with an outlet flange 1, the side wall of the secondary box 4 and directly below the inlet flange 2 is provided with a sludge removal port 9, the lower part of the secondary box 4 is provided with a first sewage outlet 7, the lower end of the main box 3 is provided with a second sewage outlet 8, the inner walls of the secondary box 4 are connected by a guide rail 11, a filter plate 10 is installed in the guide rail 11, and a plurality of wire mesh woven cores 12 are connected between the upper and lower walls of the main box 3.
[0018] In this embodiment, the upper wall of the main box 3 is provided with an exhaust valve 5.
[0019] In this embodiment, a maintenance flange 13 is provided on one side wall of the outlet flange 1.
[0020] In this embodiment, both the first drain outlet 7 and the second drain outlet 8 are equipped with valves.
[0021] In this embodiment, the plurality of wire mesh braided cores 12 are arranged in an alternating manner, and each of the plurality of wire mesh braided cores 12 is a vertical straight cylinder.
[0022] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.
[0023] Example: This device is used in the connection of HVAC water pipes. The water pipe is connected to the inlet flange 2. The water flows from the inlet flange 2 into the auxiliary box 4. It is filtered by the filter plate 10 to form the first filtration, which is coarse filtration. The mud, sand and stones in the water flow are filtered out. It can be cleaned periodically through the first drain port 7 and the slag removal port 9. After the first filtration, the water flows through the main box 3 and comes into contact with multiple wire mesh braided cores 12. The water flow will be spiral for the second filtration. The gas is discharged from the exhaust valve 5, and the impurities will fall to the bottom of the main box 3. The impurities can be cleaned periodically through the second drain port 8. After the second filtration, the water flows out from the outlet flange 1. The maintenance flange 13 can be opened periodically to inspect or repair the multiple wire mesh braided cores 12.
[0024] The size of the water passage section inside the main tank 3 is much larger than the pipe between the main tank 3 and the auxiliary tank 4. This significantly reduces the flow velocity of the heat exchange medium, water, or mixture, creating turbulence within the main tank 3. Tiny air bubbles carried in the flowing liquid are captured by a specially designed woven mesh core 12. These bubbles coalesce and, under buoyancy, rise to the air collection cavity at the top of the main tank 3, from where they are discharged into the surrounding atmosphere through the exhaust valve 5. Meanwhile, tiny particles of contaminants in the system water are carried to the bottom of the main tank 3 by the fluid. These particles decrease in velocity within the large-diameter cavity and are separated by the specially designed woven mesh core 12. Under gravity, they descend to the collection area at the bottom of the main tank 3. This collection area can be conveniently emptied periodically through the second drain port 8. Furthermore, the collection area has a large capacity, eliminating the need for frequent emptying.
[0025] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A dual-type spiral plate filter device, comprising a main housing (3), characterized in that, The main box (3) has two pairs of support legs (6) on its lower wall. The main box (3) is connected to a secondary box (4) on its side wall. The secondary box (4) has an inlet flange (2) on one side wall and an outlet flange (1) on the other side wall. The secondary box (4) has a sludge removal port (9) on its side wall directly below the inlet flange (2). The secondary box (4) has a first drain outlet (7) at its lower part and a second drain outlet (8) at the lower end of the main box (3). The inner walls of the secondary box (4) are connected by a guide rail (11). A filter plate (10) is installed in the guide rail (11). The main box (3) contains several bundles of alloy wire mesh woven cores (12).
2. The dual-type spiral plate filter device according to claim 1, characterized in that, The upper wall of the main box (3) is provided with an exhaust valve (5).
3. The dual-type spiral plate filter device according to claim 1, characterized in that, A maintenance flange (13) is provided on one side wall of the outlet flange (1).
4. The dual-type spiral plate filter device according to claim 1, characterized in that, Both the first drain outlet (7) and the second drain outlet (8) are equipped with valves.
5. A dual-type spiral plate filter device according to claim 1, characterized in that, The bundled alloy wire mesh braided cores (12) are arranged in an alternating manner, and all bundled alloy wire mesh braided cores (12) are vertical straight cylinders.