A device for prolonging the running period of plate heat exchanger

Abstract

The utility model provides a device of prolonging plate heat exchanger operation cycle. The device of prolonging plate heat exchanger operation cycle includes: support chassis, filter, the filter is installed in the position of support chassis's top near one side, the top of filter is installed with top cover, the top of top cover is installed with elbow, the other end of elbow is installed with water inlet valve, the other end of water inlet valve is installed with four -way head, one import of four -way head is installed with anti -water valve through the entering pipe, one export of four -way head is installed with subline pipeline, the other end of subline pipeline is installed with subline valve, the inside of filter is installed with intercepting disc. The device of prolonging plate heat exchanger operation cycle provided by the utility model, through the design investment cost is low, can effectively prolong plate heat exchanger service life, give full play to the use value of equipment, avoid the equipment early scrap, reduce enterprise operating cost.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, and in particular to a device for extending the operating cycle of a plate heat exchanger. Background Technology

[0002] A plate heat exchanger is a high-efficiency heat exchanger consisting of a series of metal plates with a certain corrugated shape stacked together. Thin rectangular channels are formed between the various plates, and heat exchange occurs through the plates. Plate heat exchangers are ideal equipment for liquid-liquid and liquid-vapor heat exchange.

[0003] Plate heat exchangers are widely used in chemical, petroleum and natural gas, pharmaceutical, and food processing industries due to their advantages such as high heat exchange efficiency, low heat loss, compact structure, and small footprint. However, because of the narrow channels between the plates, when the heat exchange medium contains large particles or fibrous materials, it is very easy to cause blockage of the channels between the plates, affecting the flow of the medium and thus affecting the heat exchange effect.

[0004] Cleaning plate heat exchangers is also quite difficult. Simple hydraulic backwashing is unlikely to remove debris; chemical cleaning can easily damage the plates and sealing strips, leading to leaks, and the cleaning effect is poor; disassembly and cleaning involves a large amount of work and can easily damage the sealing strips, resulting in leaks.

[0005] Therefore, it is necessary to provide a device for extending the operating cycle of plate heat exchangers to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a device for extending the operating cycle of a plate heat exchanger, solving the problems of difficult cleaning of plate heat exchangers, poor effect of simple hydraulic backwashing, and easy damage to plates and sealing strips leading to leakage.

[0007] To solve the above-mentioned technical problems, the device for extending the operating cycle of a plate heat exchanger provided by this utility model includes: a support base; The filter is installed on the top of a support frame near one side. A top cover is installed on the top of the filter, and a bend is installed on the top of the top cover. An inlet valve is installed at the other end of the bend, and a four-way connector is installed at the other end of the inlet valve. A backflow valve is installed through an inlet pipe at one inlet of the four-way connector, and a secondary pipeline is installed through one outlet of the four-way connector. A secondary valve is installed at the other end of the secondary pipeline. An interceptor plate is installed inside the filter, and an outlet pipe is installed on one side of the filter through an outlet valve. A fixing pipe is installed at the other end of the outlet pipe through a three-way connector. A filter assembly is installed on the top of a support frame. A connecting pipe is installed on the other side of the filter assembly. A plate heat exchanger is installed on the top of the support frame near the other side. The outlet of the plate heat exchanger is connected to a discharge pipe via a return water valve. The other inlet of the four-way connector is equipped with a water inlet pipe. If needed, a valve can also be installed on this pipe. The other end of the auxiliary valve is connected to one side of the filter assembly, the other end of the fixed pipe is connected to the inlet of the plate heat exchanger, and the other end of the connecting pipe is connected to one of the inlets of the three-way connector.

[0008] Preferably, a control box with a door is installed on the top of the support frame, and an operation screen is installed on one side of the control box; The door and control box are rotatably connected. The door is equipped with a lock. The control box contains a power switch and a controller for controlling the operation of the equipment. The operation panel can be used to set the equipment operating parameters.

[0009] Preferably, the filter assembly includes a filter box, an interceptor component, and a sealing cover, wherein the filter box is used to install the interceptor component for filtering impurities.

[0010] Preferably, the support frame includes a base plate, a mounting structure, and an adjustment structure, wherein the mounting structure is used to mount the adjustment structure on the bottom of the base plate.

[0011] Preferably, a drive assembly is installed on the top of the top cover, and two sets of cleaning racks are installed at the output end of the drive assembly via a rotating shaft. The drive assembly includes a protective shell, a drive component, and an angle sensor. The drive unit provides rotational driving force for the shaft, and the angle sensor, together with the drive unit controller, can precisely control the rotation speed and rotation angle.

[0012] Preferably, the filter has a conical interception structure installed inside, and a drain pipe with a drain valve is installed at the bottom of the conical interception structure; The cone-shaped interception structure is located below the interception disk.

[0013] Compared with related technologies, the device for extending the operating cycle of a plate heat exchanger provided by this utility model has the following beneficial effects: This utility model provides a device for extending the operating cycle of a plate heat exchanger. To extend the operating cycle of the plate heat exchanger, a filter with an interception disc is installed at the inlet of the plate heat exchanger through an outlet valve. This filter can filter the liquid entering the plate heat exchanger. At the same time, an inlet valve is installed at the inlet of the filter. The auxiliary pipeline, auxiliary valve, filter assembly, and connecting pipe are connected through four-way and three-way connectors. This design has low investment costs, can effectively extend the service life of the plate heat exchanger, fully utilize the value of the equipment, avoid premature scrapping of the equipment, and reduce the operating costs of the enterprise. Attached Figure Description

[0014] Figure 1 A schematic diagram of the first embodiment of the device for extending the operating cycle of a plate heat exchanger provided by this utility model; Figure 2 A schematic diagram of the interceptor disc is provided for this utility model; Figure 3 A structural schematic diagram of the interception component is provided for this utility model; Figure 4 A schematic diagram of the second embodiment of the device for extending the operating cycle of a plate heat exchanger provided by this utility model; Figure 5 A schematic diagram of the drive component is provided for this utility model.

[0015] The diagram labels are as follows: 1. Support frame; 101. Base plate; 102. Mounting structure; 103. Adjustment structure; 2. Filter assembly; 201. Filter box; 202. Interception component; 203. Sealing cover; 3. Connecting pipe; 4. Fixing pipe; 5. Discharge pipe; 6. Return water valve; 7. Plate heat exchanger; 8. Tee; 9. Outlet pipe; 10. Sub-line valve; 11. Filter; 12. Top cover; 13. Bend. 4. Inlet valve; 15. Four-way connector; 16. Backflow valve; 17. Inlet pipe; 18. Sub-line pipe; 19. Operation panel; 20. Control box; 21. Box door; 22. Outlet valve; 23. Interception plate; 24. Drive assembly; 241. Protective shell; 242. Drive component; 243. Angle sensor; 25. Cleaning rack; 26. Rotary shaft; 27. Conical interception structure; 28. Drain pipe; 29. ​​Drain valve. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0017] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the first embodiment of the device for extending the operating cycle of a plate heat exchanger provided by this utility model; Figure 2 A schematic diagram of the interceptor disc is provided for this utility model; Figure 3 A structural schematic diagram of the interception component is provided for this utility model. The device for extending the operating cycle of the plate heat exchanger includes: a support base 1; A filter 11 is installed on the top of the support frame 1 near one side. A top cover 12 is installed on the top of the filter 11. A bend 13 is installed on the top of the top cover 12. An inlet valve 14 is installed at the other end of the bend 13. A four-way connector 15 is installed at the other end of the inlet valve 14. A backflow valve 16 is installed through an inlet pipe 17 at one inlet of the four-way connector 15. A secondary pipeline 18 is installed through one outlet of the four-way connector 15. A secondary valve 10 is installed at the other end of the secondary pipeline 18. An interceptor plate 23 is installed inside the filter 11. An outlet pipe 9 is installed on one side of the filter 11 through an outlet valve 22. A fixing pipe 4 is installed at the other end of the outlet pipe 9 through a three-way connector 8. The filter assembly 2 is installed on the top of the support base 1. A connecting pipe 3 is installed on the other side of the filter assembly 2. A plate heat exchanger 7 is installed on the top of the support base 1 near the other side. A discharge pipe 5 is installed at the outlet of the plate heat exchanger 7 through a return water valve 6. The other inlet of the four-way connector 15 is equipped with a water inlet pipe. If needed, a valve can also be installed on this pipe. The other end of the auxiliary valve 10 is connected to one side of the filter assembly 2, the other end of the fixed pipe 4 is connected to the inlet of the plate heat exchanger 7, and the other end of the connecting pipe 3 is connected to one of the inlets of the three-way connector 8. Before entering the plate heat exchanger, the circulating cooling water is divided into two lines: a main line and a secondary line. A backwash valve, a filter, and an outlet valve are sequentially installed after the main line inlet valve, and then connected to the plate heat exchanger. The other circulating cooling water enters the plate heat exchanger after passing through the secondary line valve. The main and secondary lines merge before entering the plate heat exchanger. The purpose of installing the filter is to effectively prevent large particles or fibrous materials in the cooling water from entering the plate heat exchanger, clogging the channels, and reducing the heat exchange effect. The backwash valve, during the operation of the plate heat exchanger, can be opened by closing the inlet valve to flush out the blockages in the filter, ensuring sufficient cooling water flow and maintaining the cooling effect of the plate heat exchanger. The secondary line is mainly considered to ensure the normal operation of the plate heat exchanger when the filter blockage cannot be discharged through backwashing and needs to be temporarily shut off for maintenance.

[0018] A control box 20 with a door 21 is installed on the top of the support frame 1, and an operation screen 19 is installed on one side of the control box 20. The door 21 and the control box 20 are rotatably connected. The door 21 is equipped with a lock. The control box 20 contains a power switch and a controller for controlling the operation of the equipment. The operation panel 19 can set the equipment operating parameters.

[0019] The filter assembly 2 includes a filter box 201, an interception component 202, and a sealing cover 203. The filter box 201 is used to install the interception component 202 for filtering impurities. The sealing cap 203 is used to seal the top of the filter box 201.

[0020] The support frame 1 includes a base plate 101, a mounting structure 102, and an adjustment structure 103. The mounting structure 102 is used to mount the adjustment structure 103 on the bottom of the base plate 101. The threaded connection between the adjustment structure 103 and the mounting structure 102 is used to adjust the stability of the base plate 101.

[0021] The working principle of the device for extending the operating cycle of a plate heat exchanger provided by this utility model is as follows: A filter 11 with an interceptor plate 23 is installed at the inlet of the plate heat exchanger 7 via an outlet valve 22 to filter the liquid entering the plate heat exchanger 7. An inlet valve 14 is also installed at the inlet of the filter 11. The secondary pipeline 18, secondary valve 10, filter assembly 2, and connecting pipe 3 are connected via a four-way connector 15 and a three-way connector 8. In actual use, the filter 11 filters out large particles and fibrous materials in the cooling water to prevent blockage of the fluid channels between the heat exchanger plates. An inlet valve 14 and a backwash valve 16 are sequentially installed upstream of the filter 11, and an outlet valve 22 is installed downstream of the filter 11. The filter 11 also has a secondary valve 10. A return valve 6 is installed at the outlet of the circulating cooling water of the plate heat exchanger 7. During normal operation, the circulating cooling water passes through the main filter 11. The coolant then enters the plate heat exchanger 7. At this time, the inlet valve 14, outlet valve 22, and return valve 6 are open, while the secondary line valve 10 and backwash valve 16 are closed. When the outlet temperature of the cooled medium in the plate heat exchanger 7 is found to rise, the filter 11 needs to be backwashed. At this time, the inlet valve 14 should be closed quickly, and the backwash valve 16 should be opened for backwashing. When the cooling water discharged from the backwash valve 16 becomes clean, the backwash valve 16 should be closed quickly, and the inlet valve 14 should be opened. The filter 11 can then be put into normal operation. If the outlet temperature of the cooled medium is still high after backwashing, the secondary line valve 10 should be opened, and the inlet valve 14 and outlet valve 22 of the filter 11 should be closed. The filter 11 should be disconnected, disassembled, and manually cleaned. During this process, the cooling water enters the plate heat exchanger 7 from the secondary line, which does not affect the normal operation of the heat exchanger.

[0022] Compared with related technologies, the device for extending the operating cycle of a plate heat exchanger provided by this utility model has the following beneficial effects: To extend the operating cycle of the plate heat exchanger, a filter 11 with an interceptor plate 23 is installed at the inlet of the plate heat exchanger 7 via an outlet valve 22. This filter can filter the liquid entering the plate heat exchanger 7. At the same time, an inlet valve 14 is installed at the inlet of the filter 11. The secondary pipeline 18, secondary valve 10, filter assembly 2, and connecting pipe 3 are connected via a four-way connector 15 and a three-way connector 8. This design has low investment costs, can effectively extend the service life of the plate heat exchanger, fully utilize the value of the equipment, avoid premature scrapping of the equipment, and reduce the company's operating costs. Example

[0023] Please refer to the following: Figures 4-5 , Figure 4 A schematic diagram of the second embodiment of the device for extending the operating cycle of a plate heat exchanger provided by this utility model; Figure 5 This utility model provides a structural schematic diagram of the driving component. Based on the device for extending the operating cycle of a plate heat exchanger provided in the first embodiment of this application, the second embodiment of this application proposes another device for extending the operating cycle of a plate heat exchanger. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0024] Specifically, the device for extending the operating cycle of a plate heat exchanger provided in the second embodiment of this application is different in that a drive assembly 24 is installed on the top of the top cover 12, and two sets of cleaning racks 25 are installed at the output end of the drive assembly 24 via a rotating shaft 26. The drive assembly 24 includes a protective shell 241, a drive component 242, and an angle sensor 243. The drive component 242 provides rotational driving force for the rotating shaft 26. The angle sensor 243, together with the controller of the drive component 242, can accurately control the rotation speed and rotation angle. The two sets of cleaning racks 25 respectively contact the top of the intercepting disk 23 and the conical intercepting structure 27 to facilitate the cleaning of impurities and avoid blockage.

[0025] The filter 11 has a conical interception structure 27 installed inside, and a drain pipe 28 with a drain valve 29 is installed at the bottom of the conical interception structure 27. The conical interception structure 27 is located below the interception disc 23, and the drain valve 29 is located outside the filter 11.

[0026] Compared with related technologies, the device for extending the operating cycle of a plate heat exchanger provided by this utility model has the following beneficial effects: To improve the filtration efficiency and achieve self-cleaning of the filter 11, a conical interception structure 27 with a drain pipe 28 is installed inside the filter 11, positioned below the interception disc 23 to improve filtration accuracy. The drain pipe 28 allows filtered impurities to be discharged. Inside the filter 11, two sets of cleaning racks 25 are installed via a drive assembly 24 and a rotating shaft 26 to clean the interception disc 23 and the conical interception structure 27, preventing dirt blockage and ensuring smooth liquid flow. This design enables the filter 11 to prevent clogging, and the intercepted impurities can be discharged for easy cleaning, achieving self-cleaning and improving filtration stability.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for extending the operating cycle of a plate heat exchanger, characterized in that, include: Support frame; The filter is installed on the top of a support frame near one side. A top cover is installed on the top of the filter, and a bend is installed on the top of the top cover. An inlet valve is installed at the other end of the bend, and a four-way connector is installed at the other end of the inlet valve. A backflow valve is installed through an inlet pipe at one inlet of the four-way connector, and a secondary pipeline is installed through one outlet of the four-way connector. A secondary valve is installed at the other end of the secondary pipeline. An interceptor plate is installed inside the filter, and an outlet pipe is installed on one side of the filter through an outlet valve. A fixing pipe is installed at the other end of the outlet pipe through a three-way connector. A filter assembly is mounted on top of a support frame. A connecting pipe is installed on the other side of the filter assembly. A plate heat exchanger is installed on the top of the support frame near the other side. The outlet of the plate heat exchanger is connected to a discharge pipe via a return water valve.

2. The device for extending the operating cycle of a plate heat exchanger according to claim 1, characterized in that, A control box with a door is installed on the top of the support frame, and an operation panel is installed on one side of the control box.

3. The device for extending the operating cycle of a plate heat exchanger according to claim 1, characterized in that, The filter assembly includes a filter box, an interceptor component, and a sealing cover. The filter box is used to install the interceptor component for filtering impurities.

4. The device for extending the operating cycle of a plate heat exchanger according to claim 1, characterized in that, The support frame includes a base plate, a mounting structure, and an adjustment structure. The mounting structure is used to mount the adjustment structure on the bottom of the base plate.

5. The device for extending the operating cycle of a plate heat exchanger according to claim 1, characterized in that, A drive assembly is installed on the top of the top cover. Two cleaning racks are mounted on the output end of the drive assembly via a rotating shaft. The drive assembly includes a protective shell, a drive component, and an angle sensor.

6. The device for extending the operating cycle of a plate heat exchanger according to claim 1, characterized in that, The filter has a conical interception structure installed inside, and a drain pipe with a drain valve is installed at the bottom of the conical interception structure.

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