A scale removal device for plate heat exchangers

Abstract

This utility model discloses a scale removal device for plate heat exchangers, relating to the technical field of plate heat exchangers. It includes a fixed clamping plate, a fixed guide rod fixedly connected to the lower right side of the clamping plate, several plates slidably connected to the upper side of the guide rod, and fixed plates fixedly connected to the upper and lower right ends of the plates. Telescopic rods are fixedly connected to the inner sides of both fixed plates, and lifting plates are fixedly connected to the ends of the two telescopic rods. Springs are sleeved on the surfaces of the telescopic rods. Scrapers are fixedly connected to the middle positions of both sides of the lifting plate, and trapezoidal frames are fixedly connected to the upper and lower ends of both sides of the lifting plate. A fixed brush is fixedly connected to the outer end of the trapezoidal frame away from the lifting plate. This utility model, by incorporating a fixed plate, telescopic rods, lifting plate, springs, scrapers, a fixed pipe, a second solenoid valve, a fixed brush, and a pressurizing pipe, avoids disassembling the plates, effectively reducing workload, and simultaneously effectively removing deposited scale.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, specifically to a scale removal device for plate heat exchangers. Background Technology

[0002] Plate heat exchangers are highly efficient heat exchange devices widely used in industries such as chemical, refrigeration, power, food processing, and petrochemicals. They consist of a series of sealed metal plates with channels between them through which heat is transferred. Compared to traditional shell-and-tube heat exchangers, plate heat exchangers have advantages such as small size, high heat transfer efficiency, and convenient installation and maintenance. The design of plate heat exchangers allows them to occupy less space, making them suitable for locations with limited space. The number of plates can be flexibly increased or decreased as needed to adapt to different heat exchange requirements. Plate heat exchangers are easy to disassemble and clean, effectively reducing scale buildup and corrosion. They can operate under different pressure and temperature conditions, demonstrating strong adaptability. Plate heat exchangers separate two fluids at different temperatures through a set of parallel metal plates, and heat exchange occurs through the channels between the plates.

[0003] After prolonged operation, plate heat exchangers tend to accumulate a significant amount of scale on their plates. Conventional scale removal devices require disassembling the plates and then treating the scale, which is labor-intensive and time-consuming, leading to increased equipment downtime and significantly reducing work efficiency. Some scale removal devices that do not require plate disassembly have poor scale removal effects and are difficult to remove deposited scale. Long-term scale buildup on the plate surface can reduce heat exchange efficiency, increase energy consumption, and increase operating costs. To address these issues, a scale removal device for plate heat exchangers is proposed. Utility Model Content

[0004] To address the aforementioned technical problems, a scale removal device for plate heat exchangers is provided. This device solves the problem that, after long-term operation, the surface of the plates in plate heat exchangers easily accumulates a large amount of scale. Conventional scale removal devices require disassembling the plates and then treating the surface scale, which is labor-intensive and time-consuming, leading to increased equipment downtime and significantly reducing work efficiency. Some scale removal devices that do not require disassembling the plates have poor scale removal effects and are not easy to remove the deposited scale. Long-term scale adhesion on the plate surface can reduce heat exchange efficiency, increase energy consumption, and increase operating costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a scale removal device for plate heat exchangers, comprising a fixed clamping plate, a fixed guide rod fixedly connected to the lower right side of the fixed clamping plate, a movable clamping plate slidably connected to the right end of the surface of the fixed guide rod, water supply pipes fixedly connected to the four corners of the left side of the fixed clamping plate, a pressure pipe fixedly connected to the upper side of the water supply pipe, a first solenoid valve fixedly installed on the pressure pipe, several plates slidably connected to the upper side of the fixed guide rod, fixed plates fixedly connected to the upper and lower ends of the right side of the plates, telescopic rods fixedly connected to the inner sides of the two fixed plates, lifting plates fixedly connected to the ends of the two telescopic rods, springs sleeved on the surface of the telescopic rods, several fixed pipes fixedly connected to the front and rear ends of the upper side of the lifting plate, a second solenoid valve fixedly installed on the fixed pipes, scrapers fixedly connected to the middle of the left and right sides of the lifting plate, trapezoidal frames fixedly connected to the upper and lower ends of the left and right sides of the lifting plate, and a fixed brush fixedly connected to the outer end of the trapezoidal frame away from the lifting plate.

[0006] Preferably, the lower end of the fixing tube passes through the upper side of the lifting plate and extends to the lower side of the lifting plate.

[0007] Preferably, a first double-ended threaded rod is slidably connected to the upper right side of the movable clamping plate, and a first fixing nut is threaded to both the left and right ends of the first double-ended threaded rod.

[0008] Preferably, the left front and rear ends of the fixed clamping plate are slidably connected with a plurality of second double-ended threaded rods, and the left and right ends of the second double-ended threaded rods are threadedly connected with second fixing nuts.

[0009] Preferably, a sealing gasket is provided between adjacent plates.

[0010] Preferably, the first solenoid valve has grooves on both its upper and lower sides.

[0011] Preferably, water inlet holes are provided at the four corners on the right side of the plate, and the water inlet holes are connected to the interior of the water pipe.

[0012] Compared with the prior art, the advantages of this utility model are as follows: By setting up a fixed plate, telescopic rod, lifting plate, spring, scraper, fixed pipe, second solenoid valve, scraper, fixed brush and pressure pipe, this utility model can avoid disassembling the plate, effectively reduce the workload, reduce the time spent on scale removal, effectively reduce equipment downtime, and greatly improve work efficiency. At the same time, it effectively removes the deposited scale, prevents scale from adhering to the plate surface for a long time and reducing heat exchange efficiency, avoids increasing energy consumption, and effectively reduces operating costs. Attached Figure Description

[0013] Figure 1This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the plate in this utility model.

[0015] The numbers on the map are:

[0016] 1. Fixed clamping plate; 2. Fixed guide rod; 3. Movable clamping plate; 4. First double-ended threaded rod; 5. First fixing nut; 6. Second double-ended threaded rod; 7. Second fixing nut; 8. Water supply pipe; 9. Pressurization pipe; 10. First solenoid valve; 11. Plate; 12. Sealing gasket; 13. Groove; 14. Water supply hole; 15. Fixed plate; 16. Telescopic rod; 17. Lifting plate; 18. Spring; 19. Fixed pipe; 20. Second solenoid valve; 21. Scraper; 22. Trapezoidal frame; 23. Fixed brush. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] Reference Figure 1-2 As shown, a scale removal device for a plate heat exchanger includes a fixed clamping plate 1. A fixed guide rod 2 is fixedly connected to the lower right side of the fixed clamping plate 1. A movable clamping plate 3 is slidably connected to the right side of the fixed guide rod 2. A first double-ended threaded rod 4 is slidably connected to the upper right side of the movable clamping plate 3. A first fixing nut 5 is threaded to both the left and right ends of the first double-ended threaded rod 4. The lower side of the first double-ended threaded rod 4 engages with the groove 13 at the upper end, effectively fixing the movable clamping plate 3 and the plate 11.

[0019] Specifically, several second double-ended threaded rods 6 are slidably connected to the front and rear ends of the left side of the fixed clamping plate 1. The left and right ends of the second double-ended threaded rods 6 are threaded with second fixing nuts 7 to apply a certain pressure and prevent gaps from forming between the plates 11. Water supply pipes 8 are fixedly connected to the four corners of the left side of the fixed clamping plate 1. A pressure pipe 9 is fixedly connected to the upper side of the water supply pipe 8. A first solenoid valve 10 is fixedly installed on the pressure pipe 9 to effectively control the pressure input. Several plates 11 are slidably connected to the upper side of the fixed guide rod 2. A sealing gasket 12 is provided between adjacent plates 11 to prevent gaps from forming between the plates 11. Grooves 13 are provided on both the upper and lower sides of the first solenoid valve 10. Water supply holes 14 are provided through the four corners of the right side of the plates 11. The water supply holes 14 are connected to the interior of the water supply pipes 8.

[0020] Specifically, fixed plates 15 are fixedly connected to the upper and lower ends of the right side of plate 11. Telescopic rods 16 are fixedly connected to the inner sides of the two fixed plates 15. Lifting plates 17 are fixedly connected to the ends of the two telescopic rods 16. Springs 18 are sleeved on the surface of the telescopic rods 16 to return the lifting plates 17 to the middle position. Several fixed pipes 19 are fixedly connected to the front and rear ends of the upper side of the lifting plates 17. The lower end of the fixed pipes 19 passes through the upper side of the lifting plates 17 and extends to the lower side of the lifting plates 17. A second solenoid valve 20 is fixedly installed on the fixed pipe 19 to control the water flow and ensure that high-pressure cleaning water can accumulate on one side of the lifting plates 17 to push the lifting plates 17 to slide. Scrapers 21 are fixedly connected to the middle positions of the left and right sides of the lifting plates 17 to effectively remove scale. Trapezoidal frames 22 are fixedly connected to the upper and lower ends of the left and right sides of the lifting plates 17. A fixed brush 23 is fixedly connected to the outer end of the trapezoidal frame 22 away from the lifting plates 17 to effectively remove scale.

[0021] Working principle: When scale removal is required, close the second solenoid valve 20 and open the first solenoid valve 10 on the inlet water pipe 8. Pressure is applied to the inside of the water pipe 8 through the pressurization pipe 9. High-pressure cleaning water enters the upper or lower end of the sealing gasket 12 through the water inlet hole 14. Under high pressure, the lifting plate 17 slides up or down. During the sliding process of the lifting plate 17, the scraper 21 and the fixed brush 23 effectively remove scale from the surface of the plate 11. When the fixed brush 23 moves to the top or bottom, the second solenoid valve 20 opens, and under the elastic force of the spring 18... When the lifting plate 17 moves to the middle position, the scraper 21 and the fixed brush 23 remove the scale on the surface of the plate 11 for the second time. The scale flows into the water supply pipe 8 at the outlet end with the cleaning water and is discharged. Then, the second solenoid valve 20 is closed and the first solenoid valve 10 on the water supply pipe 8 at the outlet end is opened. High-pressure cleaning water is input through the pressurization pipe 9, causing the lifting plate 17 to slide in the opposite direction. The scraper 21 and the fixed brush 23 remove the scale at the other end of the plate 11, completing a comprehensive cleaning. Repeating the above cleaning steps several times can effectively remove the scale without disassembling the plate 11.

[0022] 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 embodiments and descriptions in the specification are merely 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 the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A scale removal device for plate heat exchangers, comprising a fixed clamp plate (1), characterised in that: A fixed guide rod (2) is fixedly connected to the lower right side of the fixed clamp (1). A movable clamp (3) is slidably connected to the right side of the surface of the fixed guide rod (2). Water pipes (8) are fixedly connected to the four corners on the left side of the fixed clamp (1). A pressurizing pipe (9) is fixedly connected to the upper side of the water pipe (8). A first solenoid valve (10) is fixedly installed on the pressurizing pipe (9). Several plates (11) are slidably connected to the upper side of the fixed guide rod (2). Fixed plates (15) are fixedly connected to the upper and lower right sides of the plates (11). Telescopic rods (15) are fixedly connected to the inner sides of the two fixed plates (15). 6) The ends of the two telescopic rods (16) are fixedly connected to a lifting plate (17). A spring (18) is sleeved on the surface of the telescopic rod (16). Several fixed tubes (19) are fixedly connected to the front and rear ends of the upper side of the lifting plate (17). A second electromagnetic valve (20) is fixedly installed on the fixed tube (19). Scrapers (21) are fixedly connected to the middle of the left and right sides of the lifting plate (17). Trapezoidal frames (22) are fixedly connected to the upper and lower ends of the left and right sides of the lifting plate (17). A fixed brush (23) is fixedly connected to the outer end of the trapezoidal frame (22) away from the lifting plate (17).

2. A scale removal device for a plate heat exchanger according to claim 1, characterized in that The lower end of the fixed tube (19) passes through the upper side of the lifting plate (17) and extends to the lower side of the lifting plate (17).

3. A scale removal device for a plate heat exchanger according to claim 1, characterized in that: The upper right side of the movable clamp (3) is slidably connected to a first double-ended threaded rod (4), and both the left and right ends of the first double-ended threaded rod (4) are threaded with a first fixing nut (5).

4. A scale removal device for a plate heat exchanger according to claim 1, characterized in that: The left front and rear ends of the fixed clamping plate (1) are slidably connected with several second double-ended threaded rods (6), and the left and right ends of the second double-ended threaded rods (6) are threadedly connected with second fixing nuts (7).

5. A scale removal device for a plate heat exchanger according to claim 1, characterized in that: A sealing gasket (12) is provided between adjacent plates (11).

6. A scale removal device for a plate heat exchanger according to claim 1, characterized in that: The first electromagnetic valve (10) has grooves (13) on both the upper and lower sides.

7. A scale removal device for a plate heat exchanger according to claim 1, characterized in that: Water inlets (14) are provided at the four corners on the right side of the plate (11), and the water inlets (14) are connected to the interior of the water pipe (8).

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