Tubular heat exchanger convenient to clean and filter

Abstract

The utility model relates to the technical field of automatic cleaning, and provides a tubular heat exchanger convenient to clean and filter, which comprises a filter bin, a heat exchange bin and a drainage bin, the outer wall of one side of the filter bin is connected with a cold fluid inlet pipe, the outer wall of the bottom end of the filter bin is provided with a blow-off pipe, the side wall of the blow-off pipe is provided with a first valve, and the first valve is connected with the heat exchange bin. A heat exchange bin is connected to the outer wall of the side, away from the cold fluid air inlet pipe, of the filtering bin, a hot fluid air inlet pipe and a hot fluid air outlet pipe are connected to the outer walls of the two sides of the heat exchange bin correspondingly, and a second valve and a third valve are installed on the outer walls of the hot fluid air inlet pipe and the hot fluid air outlet pipe correspondingly; a drainage bin is connected to the outer wall of the side, away from the filtering bin, of the heat exchange bin, a heat exchange air outlet pipe is connected to the outer wall of the drainage bin, a filtering layer is installed in the filtering bin, and a first limiting groove is formed in the inner wall of the filtering bin. Through the technical scheme, the problems that in the prior art, the interior of a heat exchanger is difficult to clean, and cooling liquid cannot be discharged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cleaning, and in particular to a tubular heat exchanger which is convenient for cleaning and filtering. Background Art

[0002] Heat exchangers are devices used to transfer heat between fluids. As a key heat exchange component, heat exchangers are widely used in multiple industries and applications, including chemical, energy, manufacturing, food and beverage, etc.

[0003] The patent specification with the publication number CN 105627634 B discloses a heat exchanger, which is provided with a first cavity and a second cavity, wherein the heat exchanger includes a connecting component, the connecting component at least includes a first branch pipe and a second branch pipe that are connected to each other, the first branch pipe and the second branch pipe are respectively inserted into the first cavity and the second cavity, and a plurality of micropores are respectively formed on the insertion parts of the first branch pipe and the second branch pipe, for making the first cavity and the second cavity mutually fluidly connected. In the present invention, since the two internal cavities of the heat exchanger are only fluidly connected through a single connecting component, the manufacturing cost of the heat exchanger is reduced and the sealing reliability of the heat exchanger is improved.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned tubular heat exchanger that is easy to clean and filter has the following problems: impurities inside the heat exchanger are difficult to clean, and liquid generated by fluid cooling cannot be discharged in time, affecting the use of subsequent heat exchangers. Utility Model Content

[0005] The utility model provides a tubular heat exchanger which is easy to clean and filter, and solves the problem in the related art that impurities inside the heat exchanger are difficult to clean.

[0006] The technical solution of the utility model is as follows:

[0007] The heat exchanger of claim 1, wherein the outer wall of the filter chamber is connected to a cold fluid inlet pipe, and the outer wall of the filter chamber at the bottom end of the filter chamber is provided with a drain pipe, and the side wall of the drain pipe is provided with a first valve, the outer wall of the filter chamber at a side away from the cold fluid inlet pipe is connected to the heat exchange chamber, the outer walls of the two sides of the heat exchange chamber are respectively connected to the hot fluid inlet pipe and the hot fluid outlet pipe, the outer walls of the hot fluid inlet pipe and the hot fluid outlet pipe are respectively provided with a second valve and a third valve, the outer wall of the heat exchange chamber at a side away from the filter chamber is connected to the drain chamber, the outer wall of the drain chamber is connected to the heat exchange outlet pipe, the interior of the filter chamber is provided with a filter layer, the inner wall of the filter chamber is provided with a first limiting groove, the outer wall of the first limiting groove is provided with a scraper, the middle position of the scraper is provided with a connecting shaft, and one end of the connecting shaft is connected to a fan.

[0008] The fan is fixedly connected to the scraper via a connecting shaft, and both sides of the scraper are movably mounted in the first limiting groove.

[0009] Preferably, the inner wall of the heat exchange bin is evenly installed with upper partitions and lower partitions, the outer walls of the upper partitions and lower partitions are evenly provided with circular holes, heat exchange tubes are installed in the circular holes, and the two ends of the heat exchange tubes respectively pass through the outer walls of one side of the filter bin and the drainage bin and are connected with them.

[0010] Preferably, a second limiting groove is provided inside the drainage bin, a baffle is provided inside the second limiting groove, the outer wall of the baffle is connected to a connecting block, the bottom end of the connecting block is connected to a slide plate, and a slide groove matching the connecting block is provided inside the drainage bin.

[0011] Preferably, the cold fluid air inlet pipe deviates from the center position of the filter bin, and one end of the cold fluid air inlet pipe faces the blades of the fan.

[0012] Preferably, limit blocks are provided at both ends of the scraper, and convex brushes are evenly provided at the middle position of one side of the scraper.

[0013] Preferably, the scraper is provided with a side wall of a convex brush which fits with the outer wall of one side of the filter layer, and the outer wall of the filter layer is evenly provided with filter holes.

[0014] Preferably, a circular through hole is provided on one side of the filter bin and the drainage bin, and both ends of the heat exchange tube are sealed and connected to the through hole.

[0015] Preferably, water outlet holes are evenly arranged at the bottom end of the drainage bin, the baffle plate matches the second limiting groove, and the baffle plate is installed inside the second limiting groove and fits the bottom water outlet hole.

[0016] Preferably, the outer wall of one side of the slide plate fits the outer wall of the drainage bin, and the outer wall of the other side of the slide plate is evenly provided with prisms.

[0017] The working principle and beneficial effects of the utility model are:

[0018] 1. In the utility model, by providing a fan, a connecting shaft and a scraper, when the cold air flow enters the interior of the filter bin from the cold fluid inlet pipe, when the fluid contacts the fan blades, the fan is driven to rotate, and the connecting shaft is driven to rotate by the fan rotation, and the scraper is driven to rotate by the connecting shaft, and the outer wall of the filter layer is scraped by the convex brush provided on the side wall of the scraper to clean the impurities filtered out when the cold fluid passes through the filter layer, and the filtered cold fluid is circulated to the interior of the heat exchange bin for heat exchange, and when it is necessary to clean the impurities inside the filter bin, the first valve is opened to discharge the impurities from the bottom of the filter bin through the drain pipe, so as to ensure that the gas circulation will not be blocked, improve the fluid circulation efficiency, and facilitate the cleaning of impurities inside the heat exchanger.

[0019] 2. In the utility model, by setting the slide groove, baffle plate and slide plate, after the cold fluid exchanges heat through the internal device of the heat exchange bin, it flows through the heat exchange pipe to the inside of the drainage bin and then is discharged through the heat exchange outlet pipe. When the heat exchanger stops working, the internal gas remains too much and condenses into liquid, so that the slide plate slides along the side wall of the slide groove to the top, driving the baffle plate to slide inside the second limit groove, so that the baffle plate leaves the bottom of the slide groove, and the condensed water is discharged from the water outlet hole at the bottom of the slide groove. The second limit groove set in this structure can play a role in heat insulation and heat preservation to prevent heat energy loss, and can also discharge the internal condensed water in time to avoid affecting the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a schematic diagram of the main three-dimensional structure proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the main cutaway structure proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the heat exchange tube structure proposed by the utility model;

[0024] Figure 4 This is a schematic diagram of the filter layer structure proposed by the utility model;

[0025] Figure 5 This is a schematic diagram of the scraper structure proposed by the utility model;

[0026] Figure 6 This is a schematic diagram of the baffle structure proposed by the utility model.

[0027] In the figure: 1. filter chamber; 2. cold fluid inlet pipe; 3. drain pipe; 4. first valve; 5. heat exchange chamber; 6. hot fluid inlet pipe; 7. second valve; 8. third valve; 9. hot fluid outlet pipe; 10. drain chamber; 11. heat exchange outlet pipe; 12. slide; 13. fan; 14. connecting shaft; 15. scraper; 16. first limit groove; 17. filter layer; 18. heat exchange tube; 19. upper partition; 20. lower partition; 21. baffle; 22. second limit groove; 23. connecting block; 24. slide plate. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1: Figure 1 to Figure 6 As shown, it includes a filter chamber 1, a heat exchange chamber 5 and a drainage chamber 10. The outer wall of one side of the filter chamber 1 is connected to a cold fluid inlet pipe 2, the outer wall of the bottom end of the filter chamber 1 is installed with a drain pipe 3, and the side wall of the drain pipe 3 is installed with a first valve 4. The outer wall of the filter chamber 1 on the side away from the cold fluid inlet pipe 2 is connected to the heat exchange chamber 5, the outer walls on both sides of the heat exchange chamber 5 are respectively connected to a hot fluid inlet pipe 6 and a hot fluid outlet pipe 9, and the outer walls of the hot fluid inlet pipe 6 and the hot fluid outlet pipe 9 are respectively installed with a second valve 7 and a third valve 8, the outer wall of the heat exchange chamber 5 on the side away from the filter chamber 1 is connected to a drainage chamber 10, and the outer wall of the drainage chamber 10 is connected to a heat exchange outlet pipe 11, a filter layer 17 is installed inside the filter chamber 1, the inner wall of the filter chamber 1 is provided with a first limiting groove 16, the outer wall of the first limiting groove 16 is installed with a scraper 15, a connecting shaft 14 is installed in the middle position of the scraper 15, and a fan 13 is connected to one end of the connecting shaft 14.

[0030] The fan 13 is fixedly connected to the scraper 15 via the connecting shaft 14 , and both sides of the scraper 15 are movably installed in the first limiting groove 16 . This structure can use the power generated by the fluid to drive the scraper 15 to clean the impurities on the surface of the filter layer 17 .

[0031] The inner wall of the heat exchange chamber 5 is evenly installed with an upper partition 19 and a lower partition 20, and the outer walls of the upper partition 19 and the lower partition 20 are evenly provided with circular holes, and heat exchange tubes 18 are installed in the circular holes. The two ends of the heat exchange tubes 18 respectively penetrate the outer walls of the filter chamber 1 and the drainage chamber 10 on one side and are connected thereto. This structure can enable the hot fluid to better contact the heat exchange tubes 18 to efficiently exchange heat with the cold fluid inside.

[0032] The cold fluid inlet pipe 2 deviates from the center of the filter bin 1, and one end of the cold fluid inlet pipe 2 faces the blades of the fan 13. This structure can convert the wind force of the fluid into power for the scraper 15 to rotate and clean impurities.

[0033] Limiting blocks are arranged at both ends of the scraper 15 , and convex brushes are evenly arranged at the middle position of one side of the scraper 15 . This structure can limit the scraper 15 .

[0034] The scraper 15 is provided with a side wall of a convex brush which fits with the outer wall of one side of the filter layer 17 , and the outer wall of the filter layer 17 is evenly provided with filter holes.

[0035] A circular through hole is provided on one side of the filter chamber 1 and the drainage chamber 10, and both ends of the heat exchange tube 18 are sealedly connected to the through hole.

[0036] Specific as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, when this structure is used, the cold fluid is injected into the filter bin 1 through the cold fluid inlet pipe 2, the cold fluid is filtered through the filter layer 17, the fluid contacts the fan 13 to rotate, the fan 13 drives the scraper 15 to rotate, and the convex brush arranged on the side of the scraper 15 is used to scrape the surface of the filter layer 17 to clean the impurities generated by filtering on the surface of the filter layer 17.

[0037] Embodiment 2: A second limiting groove 22 is provided inside the drainage bin 10, a baffle 21 is provided inside the second limiting groove 22, the outer wall of the baffle 21 is connected with a connecting block 23, the bottom end of the connecting block 23 is connected with a slide plate 24, and a slide groove 12 matching the slide plate 24 is provided inside the drainage bin 10. This structure can insulate the fluid after heat exchange to prevent heat loss.

[0038] Water outlet holes are evenly arranged at the bottom of the drainage bin 10, the baffle 21 matches the second limiting groove 22, and the baffle 21 is installed inside the second limiting groove 22 and fits the bottom water outlet hole. This structure can discharge the liquid generated after the internal fluid condenses to ensure heat exchange efficiency.

[0039] The outer wall of one side of the slide plate 24 fits the outer wall of the drainage bin 10 , and the outer wall of the other side of the slide plate 24 is evenly provided with rhombuses. This structure can increase the friction force in contact with the slide plate 24 , making it easier for the slide plate 24 to slide.

[0040] Specific as Figure 2 , Figure 3 , Figure 6 As shown, when this structure is used, when the heat exchanger stops being used, the fluid inside the drainage bin 10 is easily cooled to produce liquid, which affects the next use of the heat exchanger. The slide plate 24 is manually slid to make the baffle 21 connected to the slide plate 24 through the connecting block 23 slide along the track of the slide groove 12 inside the second limiting groove 22 to the top of the drainage bin 10, so that the internal condensed water is discharged through the drain port set at the bottom end of the slide groove 12.

[0041] Working principle: The cold fluid is injected into the filter bin 1 through the cold fluid inlet pipe 2, and the filter layer 17 is used to filter the incoming cold fluid. At the same time, the wind force generated by the cold fluid contacting the fan 13 drives the scraper 15 to rotate and scrape the surface of the filter layer 17, and the filtered fluid flows into the heat exchange tube 18. When the cold fluid enters the heat exchange tube 18, the second valve 7 and the third valve 8 are opened, and the hot fluid is injected into the heat exchange bin 5 through the hot fluid inlet pipe 6. Through the upper partition 19 and the lower partition 20, the hot fluid is refracted and flows up and down inside the heat exchange bin 5, and the cold fluid inside the heat exchange tube 18 is fully heat exchanged. The hot fluid cooled after heat exchange is discharged through the hot fluid outlet pipe 9 to speed up the heat exchange efficiency. The cold fluid after heat exchange flows to the inside of the drainage bin 10 through the heat exchange pipe 18. The fluid is insulated by the second limit groove 22 set in the drainage bin 10 to prevent heat loss. Then the fluid is discharged through the heat exchange outlet pipe 11 for use. When the scraper 15 cleans too many impurities in the filter layer 17, the inside of the filter bin 1 needs to be cleaned, the first valve 4 is opened, and the impurities inside the filter bin 1 are discharged through the drain pipe 3. This structure can ensure the smooth flow of the fluid inside the heat exchanger, clean the fluid inside the filter, and recycle the internal condensed water.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tubular heat exchanger that is easy to clean and filter, comprising a filter chamber (1), a heat exchange chamber (5) and a drainage chamber (10), wherein the outer wall of one side of the filter chamber (1) is connected to a cold fluid inlet pipe (2), the outer wall of the bottom end of the filter chamber (1) is installed with a sewage pipe (3), and the side wall of the sewage pipe (3) is installed with a first valve (4), the outer wall of the filter chamber (1) on the side away from the cold fluid inlet pipe (2) is connected to the heat exchange chamber (5), the outer walls on both sides of the heat exchange chamber (5) are respectively connected to a hot fluid inlet pipe (6) and a hot fluid outlet pipe (9), and the hot fluid inlet pipe (6) and the hot fluid outlet pipe (9) are connected to each other. The outer wall of the tube (9) is respectively installed with a second valve (7) and a third valve (8); the outer wall of the heat exchange chamber (5) away from the filter chamber (1) is connected to a drainage chamber (10); the outer wall of the drainage chamber (10) is connected to a heat exchange outlet pipe (11); a filter layer (17) is installed inside the filter chamber (1); the inner wall of the filter chamber (1) is provided with a first limiting groove (16); the outer wall of the first limiting groove (16) is installed with a scraper (15); a connecting shaft (14) is installed in the middle position of the scraper (15); one end of the connecting shaft (14) is connected to a fan (13).

2. A tubular heat exchanger that is easy to clean and filter according to claim 1, characterized in that: The fan (13) is fixedly connected to the scraper (15) via a connecting shaft (14), and both sides of the scraper (15) are movably mounted in the first limiting groove (16).

3. The tubular heat exchanger that is easy to clean and filter according to claim 1, characterized in that: The inner wall of the heat exchange chamber (5) is evenly provided with an upper partition (19) and a lower partition (20), and the outer walls of the upper partition (19) and the lower partition (20) are evenly provided with circular holes, and heat exchange tubes (18) are installed in the circular holes, and the two ends of the heat exchange tubes (18) respectively penetrate the outer walls of one side of the filter chamber (1) and the drainage chamber (10) and are in communication therewith.

4. The tubular heat exchanger that is easy to clean and filter according to claim 1, characterized in that: A second limiting groove (22) is arranged inside the drainage bin (10), a baffle (21) is arranged inside the second limiting groove (22), an outer wall of the baffle (21) is connected to a connecting block (23), a bottom end of the connecting block (23) is connected to a slide plate (24), and a slide groove (12) matching the slide plate (24) is arranged inside the drainage bin (10).

5. The tubular heat exchanger that is easy to clean and filter according to claim 1, characterized in that: The cold fluid air inlet pipe (2) is offset from the center position of the filter bin (1), and one end of the cold fluid air inlet pipe (2) faces the blades of the fan (13).

6. The tubular heat exchanger that is easy to clean and filter according to claim 2, characterized in that: Limiting blocks are arranged at both ends of the scraper (15), and convex brushes are evenly arranged at the middle position of one side of the scraper (15).

7. The tubular heat exchanger that is easy to clean and filter according to claim 6, characterized in that: The scraper (15) is provided with a side wall of a convex brush which fits the outer wall of one side of the filter layer (17), and the outer wall of the filter layer (17) is evenly provided with filter holes.

8. The tubular heat exchanger that is easy to clean and filter according to claim 3, characterized in that: A circular through hole is provided on one side of the filter bin (1) and the drainage bin (10), and both ends of the heat exchange tube (18) are sealedly connected to the through hole.

9. The tubular heat exchanger that is easy to clean and filter according to claim 4, characterized in that: The bottom end of the drainage bin (10) is evenly provided with water outlet holes, the baffle plate (21) matches the second limiting groove (22), and the baffle plate (21) is installed inside the second limiting groove (22) and fits the bottom water outlet holes.

10. The tubular heat exchanger that is easy to clean and filter according to claim 4, characterized in that: The outer wall of one side of the slide plate (24) fits the outer wall of the drainage bin (10), and the outer wall of the other side of the slide plate (24) is evenly provided with prisms.

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