An easy-to-clean, clog-resistant marine heat exchanger

Abstract

This utility model relates to a heat exchanger, specifically, to an easy-to-clean, anti-clogging marine heat exchanger. It includes a heat exchanger housing, with two inlet pipes fixedly installed on the outer wall of the housing. A filter assembly is located at the other end of each inlet pipe. The filter assembly includes a housing, with a drain pipe fixedly installed on one side of the housing. The other end of the drain pipe is fixedly connected to the inlet pipes via a flange. A stopcock is threaded to the bottom of the housing. With this utility model, the operator can quickly unlock and open the cover by holding and rotating the wing nut with one hand. The return spring then automatically rebounds, pushing the top block upwards to lift the filter basket, breaking the static friction between the retaining ring and the positioning ring. This causes the filter basket to rise and disengage from its original clamping position, allowing personnel to easily remove it for washing and maintenance via the handle. This enables rapid disassembly and cleaning of the filter basket, improving maintenance efficiency and ensuring the long-term anti-clogging performance of the heat exchanger.

Description

Technical Field

[0001] This utility model relates to a heat exchanger, specifically, to a non-clogging marine heat exchanger that is easy to clean. Background Technology

[0002] A heat exchanger is a device that uses the heat exchange between cold and hot fluids to achieve a desired temperature. Marine heat exchangers often use filters installed on their inlet pipes to prevent clogging. One common type of filter is the basket filter, whose internal basket traps solid impurities in the water. However, with increased operating time, the trapped impurities accumulate inside the basket, leading to decreased filtration efficiency and increased water flow resistance. Therefore, the basket must be disassembled and cleaned regularly.

[0003] The following difficulties exist when disassembling and cleaning filter baskets: First, traditional filter covers are typically secured with multiple bolts, and their installation locations are often in extremely narrow areas such as the bottom of the machine compartment, pipe gaps, or behind equipment. Maintenance personnel often have to bend over, crouch, or even lie down to access the operating position. The working space is often barely large enough for a single person to enter. Due to the surrounding pipelines, valves, and equipment bases, coordinating both hands is extremely inconvenient. Often, only one hand can be used with a specially angled tool for long-term, physically demanding screwing operations, resulting in low disassembly efficiency and safety hazards. Second, even when the cover is opened, the long-term close contact between the filter basket and its mounting base under pressure can easily generate significant static friction, causing the filter basket to become "jammed" and difficult to remove directly. It usually requires manual shaking or prying with tools to disassemble, which not only results in a poor user experience but also easily damages the filter components. These problems make the cleaning and maintenance of filter baskets time-consuming and labor-intensive, increasing equipment downtime and affecting the continuous and stable operation of the heat exchange system. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-clean, clog-resistant marine heat exchanger to solve the problems mentioned in the background section.

[0005] The filter basket and its mounting base are in close contact under pressure for a long time, which can easily generate large static friction, causing the filter basket to get "stuck" and difficult to remove directly.

[0006] To address the above problems, the present invention aims to provide an easy-to-clean, anti-clogging marine heat exchanger, comprising a heat exchanger housing. Two water inlet pipes are fixedly installed on the outer wall of the heat exchanger housing. A filter assembly is installed at the other end of each water inlet pipe. The filter assembly includes a housing, a drain pipe is fixedly installed on one side of the housing, and the other end of the drain pipe is fixedly connected to the water inlet pipes via a flange. A stopcock is threaded to the bottom of the housing, and a sleeve is fixedly installed on the upper side wall of the stopcock. A top block is slidably installed inside the sleeve. A return spring is fixedly connected between the top block and the stopcock. The return spring is used to push the top block to move upward. A filter basket is vertically slidably installed inside the housing. A handle is fixedly installed on the top of the filter basket, and the lower side wall of the filter basket contacts the upper side wall of the top block. A first side ear is fixedly connected to the edge of the top of the housing. A cover plate is hinged to the top of the first side ear. A locking mechanism is provided on the side of the cover plate away from the hinge end. When the cover plate is rotated to a horizontal state, the locking mechanism fixes the position of the cover plate. At this time, the cover plate presses down on the handle, causing the return spring to be compressed and contracted.

[0007] As a further improvement to this technical solution, the locking mechanism includes a bolt hinged to the cover plate, a wing nut threaded onto the bolt, and a second side lug fixedly connected to the top of the housing at the position corresponding to the bolt, with a groove provided on the side of the second side lug away from the housing.

[0008] As a further improvement to this technical solution, when the cover plate is rotated to a horizontal position, the bolt rotates into the inside of the groove, and the wing nut is located below the second side ear.

[0009] As a further improvement to this technical solution, a positioning ring is fixedly installed on the inner wall of the housing, and the positioning ring is slidably sleeved on the outer side of the filter basket.

[0010] As a further improvement to this technical solution, a retaining ring is fixedly installed on the top of the filter basket. When the cover plate presses down on the handle, the lower side wall of the retaining ring is in close contact with the upper side wall of the positioning ring.

[0011] As a further improvement to this technical solution, a water supply pipe is fixedly connected to the side of the housing away from the drain pipe. The connection between the water supply pipe and the housing is located above the positioning ring, and the connection between the drain pipe and the housing is located below the positioning ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This easy-to-clean, anti-clogging marine heat exchanger allows operators to quickly unlock and open the cover by holding and rotating the wing nut with one hand. The return spring then automatically rebounds, pushing the top block upward to lift the filter basket, breaking the static friction between the retaining ring and the positioning ring. This causes the filter basket to rise and move out of its original clamping position, making it easy for personnel to remove the filter basket for washing and maintenance using the handle. This enables quick disassembly and cleaning of the filter basket, improving maintenance efficiency and ensuring the long-term anti-clogging performance of the heat exchanger. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the filter assembly of this utility model;

[0016] Figure 3 This is a cross-sectional view of the filter assembly of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 For the present utility model Figure 3 Enlarged view of the structure at point B;

[0019] Figure 6 This is a schematic diagram of the cover plate of this utility model when it is in the open state.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Heat exchanger casing; 11. Water inlet pipe;

[0022] 2. Filter assembly; 21. Housing; 211. Water supply pipe; 212. Drain pipe; 213. Positioning ring;

[0023] 22. First side ear; 221. Baffle; 23. Cover plate;

[0024] 24. Locking mechanism; 241. Bolt; 242. Wing nut; 243. Second side lug; 244. Groove;

[0025] 25. Filter basket; 251. Handle; 252. Retaining ring;

[0026] 26. Plug; 27. Sleeve; 28. Top block; 29. ​​Return spring. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] Please see Figure 1 As shown, the purpose of this embodiment is to provide an easy-to-clean, anti-clogging marine heat exchanger, including a heat exchanger housing 1. Two water inlet pipes 11 are fixedly installed on the outer wall of the heat exchanger housing 1. A filter assembly 2 is provided at the other end of the water inlet pipes 11. The filter assembly 2 is used to filter out solid impurities contained in the water entering the heat exchanger, thereby preventing impurities from clogging the tube bundles inside the heat exchanger.

[0030] The structure of filter assembly 2 is described in detail below, referring to... Figures 2-5 The filter assembly 2 includes a housing 21 with a top opening. A drain pipe 212 is fixedly installed on the top of the housing 21. The other end of the drain pipe 212 is fixedly connected to the inlet pipe 11 via a flange. A stopcock 26 is threadedly connected to the bottom of the housing 21. A sleeve 27 is fixedly installed on the upper side wall of the stopcock 26. A top block 28 is slidably installed inside the sleeve 27. A return spring 29 made of stainless steel is fixedly connected between the top block 28 and the stopcock 26. The return spring 29 is used to push the top block 28 to move upward.

[0031] Inside the housing 21, a filter basket 25 with a top opening is vertically slidably installed. The side wall of the filter basket 25 has several filter holes. The size of the filter holes is specially designed to block common solid impurities in the water, such as aquatic plants, shell fragments, plastic microparticles, wood chips, and clumps of mud and sand. To further enhance the filtration effect, a layer of mesh with fine mesh can be added to the inner wall of the filter basket 25.

[0032] A positioning ring 213 is fixedly installed on the inner wall of the housing 21. The positioning ring 213 is slidably sleeved on the outside of the filter basket 25, restricting the filter basket 25 to move only in the vertical direction. A retaining ring 252 is fixedly installed on the top of the filter basket 25, and the retaining ring 252 is located above the positioning ring 213. At the same time, a steel handle 251 is fixedly installed on the top of the filter basket 25 to facilitate the operator to pick up and place the filter basket 25.

[0033] The lower side wall of the filter basket 25 contacts the upper side wall of the top block 28. A first side ear 22 is fixedly connected to the edge of the top of the housing 21. A cover plate 23 is hinged to the top of the first side ear 22. A locking mechanism 24 is provided on the side of the cover plate 23 away from the hinge end.

[0034] When the cover plate 23 rotates to a horizontal position, it can be fixed by the locking mechanism 24. At this time, the cover plate 23 blocks the top opening of the housing 21, and the lower side wall of the cover plate 23 contacts the top of the handle 251. In order to reduce the wear of the cover plate 23 and the handle 251, a rubber pad can be installed on the cover plate 23 at the position where it contacts the handle 251. The rubber pad reduces the wear between the cover plate 23 and the handle 251. When the cover plate 23 is closed, the cover plate 23 presses down on the handle 251. The downward movement of the handle 251 drives the filter basket 25 and the top block 28 to move down synchronously, causing the return spring 29 to be compressed and contracted. At the same time, when the filter basket 25 is compressed and moves down, the lower side wall of the retaining ring 252 comes into close contact with the upper side wall of the positioning ring 213, thereby fixing the position of the filter basket 25. The retaining ring 252 and the positioning ring 213 cooperate to divide the interior of the housing 21 into an upper space and a lower space. The upper space and the lower space are connected only through the filter holes of the filter basket 25.

[0035] A water supply pipe 211 is fixedly connected to the side of the housing 21 away from the drain pipe 212. The water supply pipe 211 is connected to an external pipeline. The connection between the water supply pipe 211 and the housing 21 is located above the positioning ring 213, that is, in the upper space. The connection between the drain pipe 212 and the housing 21 is located below the positioning ring 213, that is, in the lower space.

[0036] When water containing impurities is delivered into the upper space via the external pipeline through the water supply pipe 211, the water flows through the filter holes of the filter basket 25 into the lower space. During this process, solid impurities are trapped by the filter basket 25, achieving preliminary filtration of the water. The filtered water then enters the heat exchanger through the drain pipe 212, effectively preventing tube blockage.

[0037] The structure of the locking mechanism 24 is described in detail below. The locking mechanism 24 includes a bolt 241 hinged to the cover plate 23. A wing nut 242 is threaded onto the bolt 241. A second side ear 243 is fixedly connected to the top of the housing 21 at a position corresponding to the bolt 241. A groove 244 is provided on the side of the second side ear 243 away from the housing 21. The width of the groove 244 is greater than the outer diameter of the bolt 241, but smaller than the inner diameter of the wing nut 242.

[0038] After the cover plate 23 is rotated to the horizontal position, the operator first rotates the bolt 241 into the groove 244 so that the wing nut 242 is located below the second side ear 243. Then, the wing nut 242 is rotated so that it moves upward along the axis of the bolt 241 until the upper side wall of the wing nut 242 contacts the lower side wall of the second side ear 243. At this time, the cover plate 23 is pressed and fixed, and the rebound force of the return spring 29 cannot push the cover plate 23 open.

[0039] When it is necessary to clean solid impurities inside the filter basket 25, the operator first presses down on the cover plate 23, then rotates the wing nut 242 to move the wing nut 242 downward along the axis of the bolt 241. After a predetermined distance is created between the wing nut 242 and the bolt 241, the bolt 241 is turned out from inside the groove 244. At this time, the cover plate 23 can be loosened, and the bolt 241 is pulled to drive the cover plate 23 to rotate upward around the hinge axis, turning the cover plate 23 away from the opening of the housing 21. At this time, the cover plate 23 is in the open state. The entire operation can be completed by holding the wing nut 242 with one hand, thereby realizing the quick unlocking and opening of the cover plate 23.

[0040] Reference Figure 6 An inclined baffle 221 is fixedly installed on the side of the first ear 22 away from the housing 21. When the cover 23 is rotated away from the opening of the housing 21, the cover 23 will contact the baffle 221. The baffle 221 can restrict the cover 23 from continuing to rotate, thereby keeping the cover 23 in the open state for easy subsequent operation.

[0041] When the cover plate 23 rotates upward, the return spring 29 rebounds and pushes the top block 28 upward. The top block 28 simultaneously pushes up the filter basket 25, causing a small displacement between the filter basket 25 and the housing 21. This breaks the static friction caused by the pressure contact between the retaining ring 252 and the positioning ring 213. After the operator opens the cover plate 23, the filter basket 25 can be easily lifted out through the handle 251 for cleaning and maintenance. This enables quick disassembly and cleaning of the filter basket 25, improves maintenance efficiency, and ensures the long-term anti-clogging performance of the heat exchanger.

[0042] 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 preferred examples and are not intended to limit the 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 clog-resistant marine heat exchanger that is easy to clean, comprising a heat exchanger housing (1), wherein two water inlet pipes (11) are fixedly installed on the outer wall of the heat exchanger housing (1), and a filter assembly (2) is provided at the other end of the water inlet pipes (11), characterized in that: The filter assembly (2) includes a housing (21). A drain pipe (212) is fixedly installed on one side of the housing (21), and the other end of the drain pipe (212) is fixedly connected to the inlet pipe (11) via a flange. A stopcock (26) is threadedly connected to the bottom of the housing (21). A sleeve (27) is fixedly installed on the upper side wall of the stopcock (26). A top block (28) is slidably installed inside the sleeve (27). A return spring (29) is fixedly connected between the top block (28) and the stopcock (26). The return spring (29) is used to push the top block (28) to move upward. The interior of the housing (21) is vertically... A filter basket (25) is slidably installed. A handle (251) is fixedly installed on the top of the filter basket (25). The lower side wall of the filter basket (25) is in contact with the upper side wall of the top block (28). A first side ear (22) is fixedly connected to the edge of the top of the housing (21). A cover plate (23) is hinged to the top of the first side ear (22). A locking mechanism (24) is provided on the side of the cover plate (23) away from the hinge end. When the cover plate (23) is rotated to a horizontal state, the locking mechanism (24) fixes the position of the cover plate (23). At this time, the cover plate (23) presses down on the handle (251), causing the return spring (29) to be compressed and contracted.

2. The easy-to-clean, anti-clogging marine heat exchanger according to claim 1, characterized in that: The locking mechanism (24) includes a bolt (241) hinged to the cover plate (23), a wing nut (242) threaded onto the bolt (241), and a second side ear (243) fixedly connected to the top of the housing (21) at the position corresponding to the bolt (241). The second side ear (243) has a groove (244) on the side away from the housing (21).

3. The easy-to-clean, anti-clogging marine heat exchanger according to claim 2, characterized in that: When the cover plate (23) is rotated to a horizontal position, the bolt (241) rotates into the inside of the groove (244), and the wing nut (242) is located below the second side ear (243).

4. The easy-to-clean, anti-clogging marine heat exchanger according to claim 1, characterized in that: A positioning ring (213) is fixedly installed on the inner wall of the housing (21), and the positioning ring (213) is slidably sleeved on the outside of the filter basket (25).

5. The easy-to-clean, anti-clogging marine heat exchanger according to claim 4, characterized in that: A retaining ring (252) is fixedly installed on the top of the filter basket (25). When the cover plate (23) presses down on the handle (251), the lower side wall of the retaining ring (252) is in close contact with the upper side wall of the positioning ring (213).

6. The easy-to-clean, anti-clogging marine heat exchanger according to claim 4, characterized in that: A water supply pipe (211) is fixedly connected to the side of the housing (21) away from the drain pipe (212). The connection between the water supply pipe (211) and the housing (21) is located above the positioning ring (213), and the connection between the drain pipe (212) and the housing (21) is located below the positioning ring (213).

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