Anti-clogging tubular heat exchanger

Abstract

The utility model belongs to the field of heat exchanger, specifically is a kind of anti -blocking tubular heat exchanger, including shell, the inside equidistance fixed connection of shell has heat exchange tube, the inside one side of shell is equipped with first filter plate, the outside one side fixed connection of first filter plate has second filter plate, the inside of shell is provided with filter assembly, and transmission assembly is provided in shell;Through first filter plate and the first filter screen and second filter screen in second filter plate to heat source carry out double filtration, improve the filtration effect of impurity in heat source, make the heat source that enter heat exchange tube keep pure, effectively avoid the problem that impurity is retained in heat exchange tube inside and prone to block after long-term use.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, specifically an anti-clogging tubular heat exchanger. Background Technology

[0002] A tubular heat exchanger is a common heat exchange device used to transfer heat between two fluids. It consists of a set of tubes, with one fluid flowing inside the tubes and the other flowing outside. Heat transfer is achieved through heat conduction and convection through the tube walls. The working principle of a tubular heat exchanger is to transfer heat through heat convection and heat conduction. The heat source (such as steam or hot water) flows inside the tubes, while the cooling medium (such as cold water or air) flows outside the tubes. Heat is conducted to the outside of the tubes through the tube walls, and at the same time, heat is transferred through convection by the fluid outside the tubes, so that the temperature difference between the two fluids gradually decreases, achieving heat transfer and balance.

[0003] During the process of inputting heat and cold sources into the heat exchanger, the heat and cold sources contain certain impurities. Existing heat exchangers typically do not have the function of filtering and cleaning impurities. After long-term use, impurities are prone to adhere to the inner walls of the heat exchange tubes and shell, leading to blockage. Cleaning impurities is also quite difficult, which greatly increases the maintenance cost of the heat exchanger and prolongs the downtime of related equipment.

[0004] Therefore, an anti-clogging tubular heat exchanger is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes an anti-clogging tubular heat exchanger.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The anti-clogging tubular heat exchanger of this utility model includes a shell, heat exchange tubes are fixedly connected at equal intervals inside the shell, a first filter plate is installed on one side inside the shell, a second filter plate is fixedly connected to the outer side of the first filter plate, a filter assembly is provided inside the shell, a transmission assembly is provided inside the shell, a first filter screen is provided inside the first filter plate, a second filter screen is provided at the connection between the second filter plate and multiple heat exchange tubes, a first brush plate is provided on the outer side of the first filter screen, a second brush plate is provided on the outer side of the second filter screen, and a scraper is slidably connected to the outside of the heat exchange tubes.

[0007] Preferably, the transmission assembly includes a reciprocating screw, which is rotatably connected to the inside of the housing. One end of the reciprocating screw extends to the outside of the first filter plate and is fixedly connected to the first brush plate. A rotating plate is fixedly connected to the outside of the reciprocating screw and located outside the second filter plate. The second brush plate is rotatably connected to the inside of the rotating plate via a rotating shaft. A motor is fixedly connected to the outside of the housing via a mounting bracket. The output end of the motor extends into the inside of the housing and is fixedly connected to the reciprocating screw.

[0008] Preferably, the transmission assembly further includes a gear, the second brush plate extends to the other side of the rotating plate via a rotating shaft and is fixedly connected to the gear, a gear ring is fixedly connected to the outer side of the second filter plate, the gear meshes with the gear ring, and the scraper is connected to the outside of the reciprocating screw via a screw-nut pair.

[0009] Preferably, a heat source inlet is fixedly connected to one side of the top of the housing, a cold source inlet is fixedly connected to the side of the top of the housing away from the heat source inlet, a cold source outlet is fixedly connected to one side of the bottom of the housing, and a heat source outlet is fixedly connected to the side of the bottom of the housing away from the cold source outlet.

[0010] Preferably, a collection groove is provided on one side of the bottom of both the first filter plate and the second filter plate, and a sealing cover plate connected to the collection groove is installed on the bottom of both the first filter plate and the second filter plate.

[0011] Preferably, a support frame is fixedly connected to both sides of the outer shell, and a base is fixedly connected to the bottom of the support frame. The multiple heat exchange tubes are connected to the heat source outlet through an internal channel.

[0012] Preferably, a control panel is installed on the top side of the base, the motor is electrically connected to the control panel, and the scraper has through slots equidistantly spaced inside.

[0013] Preferably, a slot is provided at the top of the cold source inlet, and a filter frame is detachably connected inside the slot.

[0014] The beneficial effects of this utility model are as follows: 1. This utility model uses the first and second filter screens within the first and second filter plates to perform dual filtration of the heat source, improving the filtration effect on impurities in the heat source and keeping the heat source entering the heat exchange tube pure. This effectively avoids the problem of impurities accumulating inside the heat exchange tube after long-term use and causing blockage. Furthermore, the motor can drive the first and second brush plates to repeatedly clean the first and second filter screens, quickly brushing off the impurities attached to the first and second filter screens, thus preventing blockage after long-term use and ensuring the smooth flow of the heat source. At the same time, the reciprocating screw can drive the scraper to reciprocate and scrape the inner wall of the shell, removing the impurities and dirt attached to the inner wall of the shell, which are then discharged with the cold source, ensuring the cleanliness of the inner wall of the shell. 2. The support frame and base of this utility model can effectively improve the stability of the device during operation. The control panel allows the operator to quickly control the motor. The through groove inside the scraper facilitates the passage of cold source. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a perspective view of the first filter plate and the second filter plate in this utility model; Figure 4 This is a cross-sectional view of the heat exchange tube in this utility model; Figure 5 This is a bottom perspective view of the first filter plate and the second filter plate in this utility model; Figure 6 This is a cross-sectional view of the cold source inlet in this utility model.

[0017] In the diagram: 1. Shell; 2. Heat exchange tube; 3. Scraper; 4. First filter plate; 5. Second filter plate; 6. First filter screen; 7. Second filter screen; 8. Reciprocating screw; 9. First brush plate; 10. Rotating plate; 11. Second brush plate; 12. Motor; 13. Gear; 14. Gear ring; 15. Heat source inlet; 16. Cold source inlet; 17. Cold source outlet; 18. Heat source outlet; 19. Collection tank; 20. Sealing cover; 21. Base; 22. Control panel; 23. Support frame; 24. Slot; 25. Filter screen holder. Detailed Implementation

[0018] 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.

[0019] Example 1 Please see Figure 1-5 As shown, an anti-clogging tubular heat exchanger includes a shell 1. Heat exchange tubes 2 are fixedly connected at equal intervals inside the shell 1. A first filter plate 4 is installed on one side of the inside of the shell 1, and a second filter plate 5 is fixedly connected to the outer side of the first filter plate 4. A filter assembly is disposed inside the shell 1, and a transmission assembly is disposed inside the shell 1. A first filter screen 6 is disposed inside the first filter plate 4, and a second filter screen 7 is disposed at each connection point between the second filter plate 5 and the multiple heat exchange tubes 2. A first brush plate 9 is disposed on the outer side of the first filter screen 6, and a second brush plate 11 is disposed on the outer side of the second filter screen 7. A scraper 3 is slidably connected to the outside of the heat exchange tubes 2. The transmission assembly includes a reciprocating screw 8, which is rotatably connected inside the shell 1. One end of the first filter plate 4 extends to the outside of the first filter plate 4 and is fixedly connected to the first brush plate 9. A rotating plate 10 is fixedly connected to the outside of the reciprocating screw 8 and located on the outside of the second filter plate 5. The second brush plate 11 is rotatably connected to the inside of the rotating plate 10 via a rotating shaft. A motor 12 is fixedly connected to the outside of the housing 1 via a mounting bracket. The output end of the motor 12 extends to the inside of the housing 1 and is fixedly connected to the reciprocating screw 8. The transmission assembly also includes a gear 13. The second brush plate 11 extends to the other side of the rotating plate 10 via a rotating shaft and is fixedly connected to the gear 13. A gear ring 14 is fixedly connected to the outside of the second filter plate 5. The gear 13 and the gear ring 14 are meshed together. The scraper 3 is connected to the outside of the reciprocating screw 8 via a screw and nut pair.

[0020] During operation, the heat source is injected into the heat exchange tube 2 through the heat source inlet 15. The heat source undergoes preliminary filtration through the first filter screen 6 in the first filter plate 4. As the heat source enters the heat exchange tube 2, the second filter screen 7 in the second filter plate 5 performs secondary filtration, thereby improving the filtration effect on impurities in the heat source and keeping the heat source entering the heat exchange tube 2 pure. This prevents impurities from accumulating inside the heat exchange tube 2 and causing blockages after long-term use. When the heat exchanger is not in use, the motor 12 is started via the control panel 22, driving the reciprocating screw 8 to rotate. The reciprocating screw 8 then drives the first brush plate 9 and the rotating plate 10 to rotate, causing the first brush plate 9 to clean the first filter screen 6. The moving plate 10 drives the second brush plate 11 to clean the second filter screen 7. When the second filter screen 7 rotates around the center point of the second filter plate 5 with the rotating plate 10, the second brush plate 11 can rotate through the meshing relationship between the gear 13 and the gear ring 14, thereby improving the cleaning effect of the second filter screen 7. It can quickly brush off the impurities attached to the first filter screen 6 and the second filter screen 7, thereby avoiding clogging after long-term use. In addition, during the rotation of the reciprocating screw 8, it can simultaneously drive the scraper 3 to reciprocate through the screw nut pair, so that the scraper 3 reciprocates to scrape the inner wall of the housing 1, scraping off the impurities and dirt attached to the inner wall of the housing 1, which can be discharged with the cold source in the later stage.

[0021] This device performs dual filtration of the heat source through the first filter plate 4 and the first filter screen 6 and the second filter screen 7 within the second filter plate 5, improving the filtration effect on impurities in the heat source and keeping the heat source entering the heat exchange tube 2 pure. This effectively avoids the problem of impurities accumulating inside the heat exchange tube 2 after long-term use and causing blockages. Furthermore, the starting motor 12 drives the first brush plate 9 and the second brush plate 11 to repeatedly clean the first filter screen 6 and the second filter screen 7, quickly brushing off the impurities attached to the first filter screen 6 and the second filter screen 7, thereby preventing blockages after long-term use and ensuring the smooth flow of the heat source. At the same time, the reciprocating screw 8 can drive the scraper 3 to reciprocate and scrape the inner wall of the housing 1, removing the impurities and dirt attached to the inner wall of the housing 1, which are then discharged with the cold source, ensuring the cleanliness of the inner wall of the housing 1.

[0022] A heat source inlet 15 is fixedly connected to one side of the top of the housing 1, a cold source inlet 16 is fixedly connected to the side of the top of the housing 1 away from the heat source inlet 15, a cold source outlet 17 is fixedly connected to one side of the bottom of the housing 1, and a heat source outlet 18 is fixedly connected to the side of the bottom of the housing 1 away from the cold source outlet 17. A collection groove 19 is provided on one side of the bottom of the first filter plate 4 and the second filter plate 5. A sealing cover plate 20 communicating with the collection groove 19 is installed on the bottom of the first filter plate 4 and the second filter plate 5.

[0023] Through the above technical solution, the impurities that are brushed off can enter the corresponding collection tank 19 for collection. After brushing is completed, the sealing cover 20 at the bottom of the first filter plate 4 and the second filter plate 5 can be opened to discharge the impurities.

[0024] The outer sides of the shell 1 are fixedly connected to support frames 23, the bottom of the support frames 23 is fixedly connected to a base 21, multiple heat exchange tubes 2 are connected to the heat source outlet 18 through internal channels, a control panel 22 is installed on the top side of the base 21, the motor 12 is electrically connected to the control panel 22, and the scraper 3 has through slots opened at equal intervals inside.

[0025] Through the above technical solution, the stability of the device during operation can be effectively improved by the support frame 23 and the base 21. The control panel 22 allows the staff to quickly control the motor 12. The through groove opened inside the scraper 3 facilitates the passage of the cold source.

[0026] Example 2 Please see Figure 6 As shown in the first embodiment, as another implementation of this utility model, the top of the cold source inlet 16 is provided with a slot 24, and a filter frame 25 is detachably connected inside the slot 24.

[0027] During operation, when the cold source is injected into the housing 1, impurities in the cold source can be filtered through the filter frame 25 in the cold source inlet 16. The filtered impurities can be cleaned by disassembling the filter frame 25 to avoid clogging the filter frame 25, thereby effectively ensuring the purity of the cold source inside the housing 1.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] 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 illustrative of the 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.

Claims

1. A clog-resistant tubular heat exchanger, comprising a shell (1), wherein heat exchange tubes (2) are fixedly connected at equal intervals inside the shell (1), a first filter plate (4) is installed on one side inside the shell (1), a second filter plate (5) is fixedly connected on one side outside the first filter plate (4), a filter assembly is provided inside the shell (1), and a transmission assembly is provided inside the shell (1); Its features are: The first filter plate (4) is provided with a first filter screen (6) inside, and the second filter plate (5) is provided with a second filter screen (7) at the connection between it and the multiple heat exchange tubes (2). The first filter screen (6) is provided with a first brush plate (9) on the outside, and the second filter screen (7) is provided with a second brush plate (11) on the outside. The heat exchange tubes (2) are slidably connected with scrapers (3).

2. The anti-clogging tubular heat exchanger according to claim 1, characterized in that: The transmission assembly includes a reciprocating screw (8), which is rotatably connected to the inside of the housing (1). One end of the reciprocating screw (8) extends to the outside of the first filter plate (4) and is fixedly connected to the first brush plate (9). A rotating plate (10) is fixedly connected to the outside of the reciprocating screw (8) and the outside of the second filter plate (5). The second brush plate (11) is rotatably connected to the inside of the rotating plate (10) via a rotating shaft. A motor (12) is fixedly connected to the outside of the housing (1) via a mounting bracket. The output end of the motor (12) extends to the inside of the housing (1) and is fixedly connected to the reciprocating screw (8).

3. The anti-clogging tubular heat exchanger according to claim 2, characterized in that: The transmission assembly also includes a gear (13), the second brush plate (11) extends through a rotating shaft to the other side of the rotating plate (10) and is fixedly connected to the gear (13), the outer side of the second filter plate (5) is fixedly connected to a gear ring (14), the gear (13) meshes with the gear ring (14), and the scraper (3) is connected to the outside of the reciprocating screw (8) through a screw nut pair.

4. The anti-clogging tubular heat exchanger according to claim 2, characterized in that: A heat source inlet (15) is fixedly connected to one side of the top of the housing (1), a cold source inlet (16) is fixedly connected to the side of the top of the housing (1) away from the heat source inlet (15), a cold source outlet (17) is fixedly connected to one side of the bottom of the housing (1), and a heat source outlet (18) is fixedly connected to the side of the bottom of the housing (1) away from the cold source outlet (17).

5. The anti-clogging tubular heat exchanger according to claim 4, characterized in that: The first filter plate (4) and the second filter plate (5) are provided with a collection groove (19) on one side of the bottom. The bottom of the first filter plate (4) and the second filter plate (5) are provided with a sealing cover plate (20) that is connected to the collection groove (19).

6. The anti-clogging tubular heat exchanger according to claim 2, characterized in that: Both sides of the outer shell (1) are fixedly connected to support frames (23), and the bottom of the support frame (23) is fixedly connected to a base (21). The multiple heat exchange tubes (2) are connected to the heat source outlet (18) through an internal channel.

7. The anti-clogging tubular heat exchanger according to claim 6, characterized in that: A control panel (22) is installed on one side of the top of the base (21). The motor (12) is electrically connected to the control panel (22). The scraper (3) has through slots equidistantly spaced inside.

8. The anti-clogging tubular heat exchanger according to claim 4, characterized in that: The top of the cold source inlet (16) is provided with a slot (24), and a filter frame (25) is detachably connected inside the slot (24).

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