A shell and tube cooler

Abstract

The utility model discloses a column tube type cooler belongs to heat exchange equipment technical field. The column tube type cooler includes column tube type cooler main part, the water inlet pipe of connecting main body water inlet end and the water outlet pipe of connecting water outlet end, is provided with filter assembly on the water inlet pipe, is provided with protection subassembly on the water outlet pipe, and the motor is fixed through the support, and the motor drives rotating column, and rotating column drives the scraper, and the scraper is attached to the water face of filter screen. Protection subassembly includes the drainage frame, and the sealing plate that sets up in the drainage frame, sliding column, fixed column, spacing plate and spring, and the drainage frame is equipped with the water inlet, and the sealing plate sets up in the inside of water inlet, and the sealing plate is connected sliding column. The utility model discloses through setting up filter assembly, has realized the automatic scraping of filter screen and clean, has effectively prevented the blockage of impurity, has guaranteed the heat exchange efficiency, through setting up protection subassembly, utilizes the water pressure and spring reset and realizes the automatic sealing, effectively avoided the problem of water body backflow when cooler stops working, and the operation is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, and in particular to a shell-and-tube cooler. Background Technology

[0002] Shell and tube coolers are a type of heat exchange equipment widely used in industrial production. They achieve cooling by allowing cooling water to flow in the tube side or shell side and exchange heat with high-temperature fluids.

[0003] However, in actual operation, the water source used for cooling (such as river water, circulating water, etc.) often carries various impurities, such as silt, aquatic plants, suspended solids, etc.

[0004] These impurities easily accumulate at the inlet of the heat exchange tubes or in narrow internal channels as they flow through the cooler, gradually forming blockages. Blockages severely deteriorate heat exchange performance, leading to a significant decrease in heat exchange efficiency; at the same time, blockages also increase water flow resistance and pump energy consumption.

[0005] To address the clogging issue, current practices typically involve installing a separate filter at the front end of the cooler. However, these external filters also suffer from clogging, requiring periodic shutdowns for manual cleaning or replacement of the filter screen. This is not only cumbersome and disruptive to production but also significantly increases maintenance workload and operating costs. Currently, there is a lack of an effective structure that can be integrated into the cooler system and achieve automatic cleaning.

[0006] Therefore, this utility model proposes a shell-and-tube cooler to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a shell-and-tube cooler, which aims to improve the problems of existing shell-and-tube coolers, such as easy blockage of internal pipes due to water impurities, cumbersome cleaning and maintenance, and easy backflow of water in the outlet pipe when the machine is stopped.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a tubular cooler, comprising: a tubular cooler body, wherein the inlet end of the tubular cooler body is connected to an inlet pipe, and the outlet end of the tubular cooler body is connected to an outlet pipe; and a filter assembly and a protection assembly.

[0009] One end of the water inlet pipe is connected to the filter assembly, and one end of the water outlet pipe is connected to the protective assembly. The filter assembly includes a filter screen disposed inside the water inlet pipe; the filter assembly also includes a motor, which is fixed inside the water inlet pipe by a bracket, and the output shaft of the motor drives a rotating column through a rotatable connection. A scraper is fixedly connected to the lower end of the rotating column, and the bottom of the scraper is in contact with the water-facing surface of the filter screen.

[0010] The protective assembly includes a drainage frame with an inlet and an outlet inside. The protective assembly also includes a sealing plate located inside the inlet. A sliding column is slidably connected to one side of the sealing plate and slides against the inner wall of a fixed column. A limit plate is fixedly connected to the other end of the sliding column and contacts one end of a spring. The other end of the spring is fixed to the inner wall of the drainage frame.

[0011] Preferably, the filter screen is cylindrical, and the motor and the rotating column are located at the central axis of the filter screen.

[0012] Preferably, the bottom of the scraper is arc-shaped, and the arc shape matches the curved surface of the filter screen.

[0013] Preferably, the fixed column is vertically disposed inside the drainage frame, and the sliding column slides along the axial direction of the fixed column.

[0014] Preferably, the water inlet is a circular hole, and the shape of the sealing plate matches the shape of the water inlet.

[0015] Preferably, the spring is a compression spring, and the extension / retraction direction of the spring is parallel to the sliding direction of the sliding column.

[0016] Preferably, the outlet end of the water outlet pipe is inserted into and fitted to the inlet end of the protective component.

[0017] Preferably, the outlet end of the water inlet pipe is inserted into the water inlet interface of the tubular cooler body.

[0018] This utility model has the following beneficial effects: 1. In this utility model, a filter assembly with a motor, a rotating column and a scraper is first set up. When impurities are attached to the surface of the filter screen, the motor drives the scraper to rotate to automatically remove the impurities. This solves the problem in the prior art that impurities in the cooling water can easily clog the internal pipes of the shell and tube cooler, resulting in a decrease in heat transfer efficiency and the need for frequent manual cleaning. It achieves the technical effects of automatically removing impurities online, preventing blockage, maintaining high heat exchange efficiency of the cooler and reducing manual maintenance costs.

[0019] 2. In this utility model, by setting up a protective component driven by water pressure and reset by a spring, the water pressure pushes the sealing plate, sliding column and limiting plate to move to compress the spring and open the drainage channel. When the water pressure disappears, the spring rebounds and pushes the sealing plate to reset and block the water inlet. This solves the problem in the prior art that when the cooler stops running, the water in the outlet pipe is prone to backflow, which will pollute or damage the cooler body. It achieves the technical effect of automatically preventing water backflow and improving the safety and reliability of equipment operation. Attached Figure Description

[0020] Figure 1 This is a perspective view of a shell-and-tube cooler proposed in this utility model; Figure 2 This is a schematic diagram of the water inlet pipe of a tubular cooler proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the water outlet pipe of a shell-and-tube cooler proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0021] Legend: 1. Shell and tube cooler body; 2. Filter assembly; 201. Support; 202. Motor; 203. Rotating column; 204. Scraper; 205. Filter screen; 3. Protective assembly; 301. Drainage rack; 302. Water inlet; 303. Water outlet; 304. Fixed column; 305. Sliding column; 306. Sealing plate; 307. Limiting plate; 308. Spring; 4. Water inlet pipe; 5. Water outlet pipe. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-5 The present invention provides an embodiment of a shell-and-tube cooler, which aims to solve the problems in existing shell-and-tube coolers where impurities in the cooling water can easily clog the internal pipes of the cooler, leading to a decrease in heat transfer efficiency, and the risk of backflow of water in the outlet pipe when the cooler stops operating.

[0024] The shell-and-tube cooler includes a shell-and-tube cooler body 1, with an inlet pipe 4 fixedly connected to the inlet end of the shell-and-tube cooler body 1, a filter assembly 2 fixedly connected to one end of the inlet pipe 4, an outlet pipe 5 fixedly connected to the outlet end of the shell-and-tube cooler body 1, and a protective assembly 3 fixedly connected to one end of the outlet pipe 5. The shell-and-tube cooler body 1 serves as a heat exchange component for heat exchange between high-temperature fluid and cooling water.

[0025] The filter assembly 2 is fixedly connected to one end of the water inlet pipe 4 and is used to filter the cooling water entering the shell-and-tube cooler body 1. The filter assembly 2 includes a filter screen 205, a motor 202, a bracket 201, a rotating column 203, and a scraper 204. The filter screen 205 is disposed inside the water inlet pipe 4 and is used to intercept impurities in the cooling water. The motor 202 is fixed inside the water inlet pipe 4 via the bracket 201. Specifically, the motor 202 and the bracket 201 are fixed on the water inlet side of the filter screen 205. The output shaft of the motor 202 drives the rotating column 203 through a rotatable connection. The lower end of the rotating column 203 is fixedly connected to the scraper 204. The bottom of the scraper 204 is in contact with the water-facing surface of the filter screen 205 to ensure that the scraper 204 can effectively scrape off impurities attached to the surface of the filter screen 205 when rotating. The rotation of the rotating column 203 drives the scraper 204 to rotate synchronously, thereby achieving online automatic cleaning of the filter screen 205 and ensuring smooth water flow.

[0026] The protective component 3 is fixedly connected to one end of the outlet pipe 5 to prevent backflow of external water when the cooling water stops flowing. The protective component 3 includes a drain frame 301, an inlet 302, an outlet 303, a sealing plate 306, a sliding column 305, a fixed column 304, a limiting plate 307, and a spring 308. The drain frame 301 serves as the overall frame of the protective component 3, and the inlet 302 and outlet 303 are provided inside the drain frame 301. A sealing plate 306 is located inside the water inlet 302. A sliding column 305 is slidably connected to one side of the sealing plate 306. The sliding column 305 is slidably fitted to the inner wall of the fixed column 304. This sliding fit provides a stable and precise guide for the sliding column 305. A limiting plate 307 is fixedly connected to the other end of the sliding column 305. The limiting plate 307 is in contact with one end of the spring 308. The other end of the spring 308 is fixed to the inner wall of the drain frame 301. The sealing plate 306 is moved by water pressure, which compresses the spring 308 to open the drainage channel. When the water pressure disappears, the rebound force of the spring 308 pushes the entire mechanism to reset, thus achieving a seal.

[0027] In this embodiment, the filter screen 205 is preferably a cylindrical structure. This cylindrical structure facilitates water flow from the outside to the inside or from the inside to the outside and provides a good working surface for the rotating cleaning of the scraper 204. To achieve stable and efficient cleaning, the motor 202 and the rotating column 203 are preferably located at the central axis of the cylindrical filter screen 205. This coaxial arrangement ensures the smooth rotation of the rotating column 203 and allows the scraper 204, which is fixedly connected to the rotating column 203, to evenly cover the entire water-facing surface of the filter screen 205.

[0028] Meanwhile, to achieve optimal cleaning results, the bottom of the scraper 204 is curved, matching the curved surface of the cylindrical filter screen 205. In the assembled state, the curved bottom of the scraper 204 remains in contact with the water-facing surface of the filter screen 205, ensuring that when the motor 202 drives the rotating column 203 to rotate the scraper 204, the scraper 204 can apply a uniform and continuous scraping force to the surface of the filter screen 205, efficiently removing attached impurities without leaving any cleaning dead zones on the surface of the filter screen 205. This also avoids poor cleaning results or filter damage due to gaps that are too large or too small.

[0029] For the specific model, power or control method of motor 202, those skilled in the art can make conventional selections based on the actual pipe diameter, water flow pressure and impurity type. Its internal circuit control and start-stop logic are well-known technologies in the field and will not be described in detail here.

[0030] The fixed column 304 is vertically installed inside the drainage frame 301, while the sliding column 305 slides along the axial direction of the fixed column 304. This vertically guided structure effectively prevents the sliding column 305 from deflecting or getting stuck during reciprocating motion. The inlet 302 is a circular hole, and the sealing plate 306 is also a circular plate structure that matches the circular shape of the inlet 302. When the sealing plate 306 is reset, the matching shape ensures that the sealing plate 306 and the edge of the inlet 302 form a uniform contact, thereby achieving a tight seal. The spring 308 is preferably a compression spring, and the extension direction of the spring 308 is parallel to the sliding direction of the sliding column 305. This parallel arrangement allows the rebound force generated by the spring 308 to directly act on the limiting plate 307 and the sliding column 305, ensuring that the sealing plate 306 can be reset quickly and reliably.

[0031] The outlet end of the water outlet pipe 5 is connected to the inlet end of the protective component 3 by an insertion fit. This connection method is simple in structure and easy to install, disassemble and maintain. The outlet end of the water inlet pipe 4 is also connected to the inlet interface of the shell and tube cooler body 1 by an insertion fit, which enables quick installation and positioning.

[0032] Working principle: Cooling water is transported to the filter assembly 2 through the inlet pipe 4. Inside the filter assembly 2, the cooling water is first filtered through the filter screen 205. Impurities in the water are intercepted by the water-facing surface of the filter screen 205, and the filtered clean water then enters the main body 1 of the shell-and-tube cooler. When too many impurities are attached to the water-facing surface of the filter screen 205, the motor 202 is started. The motor 202 is fixed inside the inlet pipe 4 by the bracket 201. The output shaft of the motor 202 drives the rotating column 203 to rotate clockwise through the rotating connection. The rotation of the rotating column 203 drives the fixed scraper 204 to rotate synchronously. The bottom of the scraper 204 is always in contact with the water-facing surface of the filter screen 205. The rotation of the scraper 204 scrapes off the impurities attached to the water-facing surface of the filter screen 205. The scraped-off impurities are discharged with the water flow, keeping the filter screen 205 unobstructed.

[0033] Clean water filtered through filter screen 205 enters the body 1 of the tubular cooler, where it exchanges heat with the high-temperature fluid. The circulating water that has completed the heat exchange is discharged through the outlet pipe 5 and enters the protective component 3. When the circulating water is transported outward through the outlet pipe 5, the pressure of the water flow pushes the sealing plate 306 inside the protective component 3 to move. The sealing plate 306 drives the sliding column 305 through a sliding connection. The sliding column 305 slides on the inner wall of the fixed column 304. The sliding of the sliding column 305 drives the fixed connection limiting plate 307 to move synchronously. The movement of the limiting plate 307 compresses the contact spring 308. At this time, the water flow channel opens, and the water flows through the inlet 302 into the interior of the drain rack 301 and is finally discharged through the outlet 303.

[0034] When the main body 1 of the shell-and-tube cooler stops supplying circulating water and the water pressure in the outlet pipe 5 disappears, the compressed spring 308 immediately rebounds. The rebound force of the spring 308 pushes the limiting plate 307 to reset. The limiting plate 307 pushes the sealing plate 306 to reset through the sliding column 305. Finally, the sealing plate 306 is tightly fitted with the top of the inlet 302, sealing the inlet 302. Through this self-resetting sealing structure of the protective component 3, the backflow of external water into the interior of the main body 1 of the shell-and-tube cooler is effectively prevented.

Claims

1. A shell-and-tube cooler, characterized in that, include: The tubular cooler body (1) has an inlet pipe (4) connected to the inlet end of the tubular cooler body (1), a filter assembly (2) connected to one end of the inlet pipe (4), an outlet pipe (5) connected to the outlet end of the tubular cooler body (1), and a protective assembly (3) connected to one end of the outlet pipe (5). The filter assembly (2) includes a filter screen (205), which is disposed inside the water inlet pipe (4); the filter assembly (2) also includes a motor (202), which is fixed inside the water inlet pipe (4) by a bracket (201), and the output shaft of the motor (202) drives a rotating column (203) through a rotatable connection. A scraper (204) is fixedly connected to the lower end of the rotating column (203), and the bottom of the scraper (204) is in contact with the water-facing surface of the filter screen (205); The protective component (3) includes a drainage frame (301), which has an inlet (302) and an outlet (303) inside. The protective component (3) also includes a sealing plate (306), which is located inside the inlet (302). A sliding column (305) is slidably connected to one side of the sealing plate (306). The sliding column (305) is slidably fitted to the inner wall of the fixed column (304). A limiting plate (307) is fixedly connected to the other end of the sliding column (305). The limiting plate (307) is in contact with one end of a spring (308), and the other end of the spring (308) is fixed to the inner wall of the drainage frame (301).

2. The shell-and-tube cooler according to claim 1, wherein, The filter screen (205) is cylindrical, and the motor (202) and the rotating column (203) are located at the central axis of the filter screen (205).

3. The shell-and-tube cooler according to claim 1, wherein, The bottom of the scraper (204) is arc-shaped, and the arc matches the curved surface of the filter (205).

4. The shell-and-tube cooler according to claim 1, wherein, The fixed column (304) is vertically disposed inside the drainage frame (301), and the sliding column (305) slides along the axial direction of the fixed column (304).

5. The shell-and-tube cooler according to claim 1, wherein, The inlet (302) is a circular hole, and the shape of the sealing plate (306) matches the shape of the inlet (302).

6. The shell-and-tube cooler according to claim 1, wherein, The spring (308) is a compression spring, and the extension and retraction direction of the spring (308) is parallel to the sliding direction of the sliding column (305).

7. The shell-and-tube cooler according to claim 1, wherein, The outlet end of the water outlet pipe (5) is inserted into the inlet end of the protective component (3).

8. The shell-and-tube cooler according to claim 1, wherein, The outlet end of the water inlet pipe (4) is inserted into the water inlet interface of the tubular cooler body (1).

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