A pre-filtering device for industrial plate heat exchangers
By using stainless steel filter screens and a specific structure in the pre-filter of plate heat exchangers, the problems of poor heat exchange effect and frequent cleaning of plate heat exchangers in chemical production have been solved, achieving efficient filtration and simplifying equipment maintenance, thereby improving production efficiency and product quality.
Patent Information
- Application Number
- CN202522028648.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-22
AI Technical Summary
In chemical production, plate heat exchangers suffer from poor heat exchange efficiency, impurity accumulation, frequent cleaning, equipment damage, and difficulty in cleaning during the cooling process of high-temperature solutions and water circulation, which affects product quality and production efficiency.
An industrial plate heat exchanger pre-filter device was designed, which uses a stainless steel filter screen and a filter cylinder with a specific structure. It is connected by a T-shaped pipe and a quick-opening flange cover to achieve efficient filtration and convenient cleaning, reducing the frequency of disassembly and cleaning.
It improves heat exchange efficiency, reduces the frequency of disassembly and cleaning of plate heat exchangers, extends equipment life, reduces cleaning difficulty, and improves product quality and production efficiency.
Smart Images
Figure CN224672258U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of chemical industry circulation equipment, specifically relating to a pre-filter device for an industrial plate heat exchanger. Background Technology
[0002] In the chemical production field, pre-filtration devices are essential for cooling high-temperature solutions and circulating water. Due to production process requirements, industrial plate heat exchangers often experience poor heat exchange efficiency when using open-type cooling towers in northern regions. This is compounded by the presence of particulate impurities between the plates, particularly at the inlet, and the presence of granular impurities within the plates. Furthermore, disassembling and cleaning plate heat exchangers is time-consuming, resulting in significant plate damage during the cleaning and reassembly process. This leads to frequent maintenance, difficult cleaning operations, and a substantial impact on product quality, as well as a poor working environment. Therefore, improving product quality, reducing maintenance frequency, and achieving high-efficiency production are crucial needs for the chemical industry. Utility Model Content
[0003] This utility model provides a pre-filter device for industrial plate heat exchangers, which aims to solve the problems existing in the rapid cooling process of high-temperature solutions and water circulation.
[0004] Therefore, the present invention adopts the following technical solution: A pre-filter device for an industrial plate heat exchanger, characterized in that: a plate heat exchanger connecting pipe, inlet and outlet water pipes, a filter cylinder, a stainless steel filter screen, a flange cover, a flange, a valve, and fasteners.
[0005] The filter cartridge includes an inlet pipe at one end and an outlet pipe at the other end. The diameter of the inlet and outlet pipes is 1 / 2 to 1 / 3 times the diameter of the filter cartridge. The filter cartridge and the inlet and outlet pipes form a T-shape, and flanges are connected to both ends of the pipes. A valve is installed at the bottom of the filter cartridge to drain water through pressure relief.
[0006] The upper end of the filter cylinder is formed by welding a flange to create a sealing body with the flange cover. The flange cover and the filter cylinder are connected and disassembled using a quick-release connection. A 45° angle stainless steel filter screen is placed in the middle of the filter cylinder to form the inlet and outlet slopes, ensuring the filtration effect.
[0007] The flanges at both ends of the inlet and outlet water pipes are connected to the two ends of the valves. When the valves are closed, it is convenient to drain the filter cartridge or clean the stainless steel filter screen. The water flow rate is controlled by adjusting the valve opening degree to ensure the required temperature for production.
[0008] The beneficial effects of this utility model are as follows: by optimizing the filtration device, it improves the heat exchange effect of industrial plate heat exchangers, reduces the frequency of disassembly and cleaning, reduces damage to plate heat exchanger spare parts, extends service life, and reduces cleaning difficulty. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural front view of the present invention; Figure 3 This is a structural cross-sectional view of the present invention; Figure 4 This is a top view of the structure of this utility model; In the diagram: 1—Plate heat exchanger connecting pipe; 2—Inlet and outlet water pipes; 3—Filter cylinder; 4—Stainless steel filter screen; 5—Flange cover; 6—Flange; 7—Valve and fasteners; 8—Drain valve. Detailed Implementation
[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figure 1 As shown, an industrial plate heat exchanger pre-filter device includes: 1, plate heat exchanger connecting pipe 2, inlet and outlet water pipes 3, filter cylinder 4, stainless steel filter screen 5, flange cover 6, flange 7, valves, and fasteners. The filter cylinder 3 is connected to the filter cylinder 3 by inlet and outlet water pipes 2 at both ends. The diameter of the inlet and outlet water pipes is 1 / 2 to 1 / 3 times the diameter of the filter cylinder. The filter cylinder 3 and the inlet and outlet water pipes 2 form a T-shape. The inlet and outlet water pipes 2 are connected to flanges 6 at both ends. A drain valve 8 is installed at the bottom of the filter cylinder for pressure relief and drainage.
[0011] The upper end of the filter cylinder is welded with a flange to form a sealing body with the flange cover 5. The flange cover 5 and the filter cylinder are connected by quick-release fasteners 7 to facilitate disassembly and operation. A 45° angle stainless steel filter screen 4 is placed in the middle of the filter cylinder body 3 to form the inlet and outlet slopes, ensuring the filtration effect.
[0012] The flanges at both ends of the inlet and outlet water pipes 2 are connected to both ends of valve 7. When the valves are closed, it is convenient to drain the filter cartridge or clean the stainless steel filter screen 5. The opening and closing degree of the valves is adjusted to control the water flow and ensure the solution circulation temperature required for production.
Claims
1. A pre-filter device for an industrial plate heat exchanger, characterized in that, Includes plate heat exchanger connecting pipe (1), inlet and outlet water pipes (2), filter cylinder (3), stainless steel filter screen (4), flange cover (5), flange, valve and fastener (7); The plate heat exchanger connecting pipe (1) and the inlet and outlet water pipes (2) are connected to both ends of the filter cylinder (3) and form a T-shape, with the two pipes facing each other; the diameter of the filter cylinder (3) is 2-3 times the diameter of the pipe, and flanges (6) are connected to both ends of the pipe; a drain valve (8) is installed at the bottom of the filter cylinder. A stainless steel filter screen (4) with an inlet and outlet slope forming a 45° angle is placed in the middle of the filter cylinder (3). The upper end is sealed with a flange cover (5). The flange cover (5) and the filter cylinder are connected and disassembled by quick opening.