Heat exchanger convenient to clean

Abstract

The utility model relates to the field of heat exchangers, in particular to a heat exchanger convenient to clean, which comprises a first shell and a second shell which are symmetrically distributed, a plurality of heat exchange pieces are arranged between the first shell and the second shell, and a cleaning structure is arranged in front of the front heat exchange piece. The heat exchange piece comprises a plurality of straight pipes and connecting flanges fixedly connected to the two ends of the straight pipes, the heat exchange piece is detachably connected with the first shell and the second shell through the connecting flanges at the two ends, a traditional integral heat exchange pipe bundle is split into independent heat exchange pieces, and only flange bolts of target heat exchange pieces need to be loosened during cleaning, so that the heat exchange pieces can be cleaned. And the corresponding single heat exchange piece is pulled out for off-line cleaning, the whole structure does not need to be disassembled, and therefore deep cleaning or replacement can be conducted on the single heat exchange piece, and overall shutdown is not needed.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and specifically discloses a heat exchanger that is easy to clean. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] Chinese patent CN214470359U discloses a heat exchanger that is easy to clean, including a housing mounted on the heat exchanger. A solid plate is rotatably connected inside the housing, and serpentine pipes are fixedly connected to both ends of the solid plate. A cleaning mechanism is installed inside the housing. In this solution, a second motor is started, causing the rotating shaft to drive the serpentine pipes fixedly connected to both ends of the solid plate to rotate. Then, a first motor drives a reciprocating screw to rotate, which in turn causes the screw sleeve to drive a long rod to move up and down. A support rod fixedly connected to the long rod drives a brush to move on the serpentine pipes. At the same time, a high-pressure water gun is turned on to clean the dirt on the serpentine pipes, effectively ensuring the heat transfer effect of the heat exchanger, improving cleaning efficiency, and the two serpentine pipes are used alternately to effectively ensure the continuous operation of the heat exchanger, saving cleaning time and improving the working efficiency of the heat exchanger.

[0004] The aforementioned document discloses a heat exchanger that is easy to clean, but the cleaning brush assembly moves as a whole within the housing, making it impossible to selectively clean localized fouling areas, resulting in low cleaning efficiency. Furthermore, the cost of using two heat exchangers alternately is high. Therefore, a heat exchanger that is easy to clean is needed to solve this problem. Utility Model Content

[0005] This invention proposes a heat exchanger that is easy to clean, featuring isolated cleaning of individual heat exchange components, allowing for deep cleaning or replacement of a single heat exchange component without requiring a complete shutdown, and facilitating cleaning of the gaps between multiple adjacent straight pipes and the outer walls of the straight pipes.

[0006] This utility model is implemented as follows: a heat exchanger that is easy to clean includes a first shell and a second shell that are symmetrically distributed, a plurality of heat exchange elements are arranged between the first shell and the second shell, and a cleaning structure is arranged in front of the front heat exchange element.

[0007] The heat exchanger includes multiple straight pipes and connecting flanges fixedly connected to both ends of the straight pipes. The heat exchanger is detachably connected to the first shell and the second shell through the connecting flanges at both ends.

[0008] The cleaning structure includes a movable frame located in front of the heat exchanger, multiple U-shaped plates located on the outer side of the straight pipe on the outer wall of the movable frame, a cleaning brush located on the inner wall of the U-shaped plate, a mounting frame located on the upper end face of the first and second housings, an electric slide rail mounted on the inner wall of the mounting frame, and a slide frame slidably connected to the outer wall of the electric slide rail and fixedly connected to the movable frame.

[0009] As a preferred embodiment of the present invention, the heat exchanger is easy to clean, wherein the first housing has a plurality of mounting slots for mounting the heat exchanger on the side near the heat exchanger.

[0010] As a preferred embodiment of this utility model of an easy-to-clean heat exchanger, the inner wall of the straight tube is coated with a nano-ceramic coating.

[0011] As a preferred embodiment of this utility model of a heat exchanger that is easy to clean, the length of the U-shaped plate extends to the outer side of the rearmost heat exchange component.

[0012] As a preferred embodiment of this utility model of a heat exchanger that is easy to clean, the U-shaped plate and the movable frame are detachably connected by bolts.

[0013] As a preferred embodiment of this utility model of a heat exchanger that is easy to clean, the mounting bracket, the first housing, and the second housing are detachably connected by bolts.

[0014] The beneficial effects of this utility model are:

[0015] By disassembling the traditional integral heat exchanger tube bundle into independent heat exchanger components, cleaning only requires loosening the flange bolts of the target heat exchanger component and pulling out the corresponding individual heat exchanger component for offline cleaning. There is no need to disassemble the entire structure, so deep cleaning or replacement of a single heat exchanger component can be performed without shutting down the entire system.

[0016] By moving the movable frame left and right on the outer wall of the heat exchanger, the cleaning brush moves on the outer wall of the straight tube for simple cleaning, which facilitates cleaning of the gaps between multiple adjacent straight tubes and the outer wall of the straight tube. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of a heat exchanger that is easy to clean according to this utility model;

[0019] Figure 2 This is a side view of the mobile frame of this utility model;

[0020] Figure 3 This is a top view of a heat exchanger that is easy to clean according to this utility model.

[0021] The markings in the diagram are: 1. First housing; 101. Mounting groove; 2. Second housing; 3. Heat exchanger; 301. Connecting flange; 4. Mounting bracket; 401. Electric slide rail; 402. Slide carriage; 403. Moving frame; 404. U-shaped plate; 405. Cleaning brush. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-3 A heat exchanger that is easy to clean includes a first shell 1 and a second shell 2 that are symmetrically distributed. A plurality of heat exchange elements 3 are arranged between the first shell 1 and the second shell 2. A cleaning structure is provided in front of the heat exchange element 3.

[0024] The heat exchanger 3 includes multiple straight pipes and connecting flanges 301 fixedly connected to both ends of the straight pipes. The heat exchanger 3 is detachably connected to the first housing 1 and the second housing 2 through the connecting flanges 301 at both ends.

[0025] The cleaning structure includes a movable frame 403 located in front of the heat exchanger 3, multiple U-shaped plates 404 located on the outer side of the straight pipe on the outer wall of the movable frame 403, a cleaning brush 405 located on the inner wall of the U-shaped plate 404, a mounting bracket 4 located on the upper end face of the first housing 1 and the second housing 2, an electric slide rail 401 mounted on the inner wall of the mounting bracket 4, and a slide 402 slidably connected to the outer wall of the electric slide rail 401 and fixedly connected to the movable frame 403.

[0026] In this embodiment: by splitting the traditional integral heat exchanger tube bundle into independent heat exchanger components 3, each heat exchanger component 3 is connected to the first shell 1 and the second shell 2 through a standardized connecting flange 301. During cleaning, it is only necessary to loosen the flange bolts of the target heat exchanger component 3 and pull out the corresponding individual heat exchanger component 3 for offline cleaning. There is no need to disassemble the overall structure, so that a deep cleaning or replacement of a single heat exchanger component can be performed without shutting down the entire machine.

[0027] The electric slide rail 401 (Bosch Rexroth TS2 series, model: TS2-40-500-800) operates, causing the carriage 402 to drive the moving frame 403 to move left and right on the outer wall of the heat exchanger 3. This causes the U-shaped plate 404 to drive the cleaning brush 405 to move on the outer wall of the straight pipe for simple cleaning, thus facilitating the cleaning of the gaps between multiple adjacent straight pipes and the outer wall of the straight pipe.

[0028] As a technical optimization of this utility model, the first housing 1 has a plurality of mounting grooves 101 for mounting the heat exchanger 3 on the side near the heat exchanger 3.

[0029] In this embodiment, the heat exchanger 3 can be quickly inserted and removed through the mounting slot 101.

[0030] As a technical optimization of this utility model, the inner wall of the straight pipe is coated with a nano-ceramic coating.

[0031] In this embodiment, a nano-ceramic coating is sprayed onto the inner wall of the straight pipe, thereby reducing the adhesion of dirt inside the straight pipe and extending its service life.

[0032] As a technical optimization of this utility model, the length of the U-shaped plate 404 extends to the outer side of the last heat exchanger 3.

[0033] In this embodiment: the length of the U-shaped plate 404 extends to the outer side of the last heat exchanger 3, and the cleaning brush 405 can be used to clean all the heat exchangers 3.

[0034] As a technical optimization of this utility model, the U-shaped plate 404 and the movable frame 403 are detachably connected by bolts.

[0035] In this embodiment, the U-shaped plate 404 can be removed by bolts to replace the cleaning brush 405.

[0036] As a technical optimization of this utility model, the mounting bracket 4, the first housing 1, and the second housing 2 are detachably connected by bolts.

[0037] In this embodiment, the mounting bracket 4 can be disassembled from the first housing 1 and the second housing 2 by means of bolts, thereby facilitating the maintenance of the heat exchange component 3.

[0038] The working principle and usage process of this utility model: The electric slide rail 401 is electrically connected to the external PLC controller, and the reciprocating cleaning cycle can be set. By disassembling the traditional integral heat exchange tube bundle into independent heat exchange components 3, each heat exchange component 3 is connected to the first housing 1 and the second housing 2 through a standardized connecting flange 301. During cleaning, it is only necessary to loosen the flange bolts of the target heat exchange component 3 and pull out the corresponding single heat exchange component 3 from the mounting groove 101 for offline cleaning. There is no need to disassemble the overall structure, so that a deep cleaning or replacement of a single heat exchange component can be performed without the need for overall shutdown.

[0039] The operation of the electric slide rail 401 causes the slide 402 to drive the moving frame 403 to move left and right on the outer wall of the heat exchanger 3, which in turn causes the U-shaped plate 404 to drive the cleaning brush 405 to move on the outer wall of the straight pipe for simple cleaning. This facilitates the cleaning of the gaps between multiple adjacent straight pipes and the outer wall of the straight pipe.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A heat exchanger facilitating cleaning, comprising a first housing (1) and a second housing (2) symmetrically distributed, characterized in that: A plurality of heat exchange pieces (3) are arranged between the first shell (1) and the second shell (2), and a cleaning structure is arranged in front of the front heat exchange piece (3); The heat exchange piece (3) comprises a plurality of straight pipes and connecting flanges (301) fixedly connected to two ends of the straight pipes, and the heat exchange piece (3) is detachably connected to the first shell (1) and the second shell (2) through the connecting flanges (301) at two ends; The cleaning structure comprises a moving frame (403) arranged in front of the heat exchange piece (3), a plurality of U-shaped plates (404) arranged on the outer wall of the moving frame (403) and located outside the straight pipes, cleaning brushes (405) arranged on the inner wall of the U-shaped plates (404), a mounting frame (4) arranged on the upper end face of the first shell (1) and the second shell (2), an electric sliding rail (401) mounted on the inner wall of the mounting frame (4), and a sliding frame (402) slidably connected to the outer wall of the electric sliding rail (401) and fixedly connected to the moving frame (403).

2. The heat exchanger of claim 1, wherein: A plurality of mounting grooves (101) for mounting the heat exchange pieces (3) are formed in the side of the first shell (1) close to the heat exchange pieces (3).

3. The heat exchanger of claim 1, wherein: The inner wall of the straight pipe is sprayed with a nano ceramic coating.

4. The heat exchanger of claim 1, wherein: The length of the U-shaped plate (404) extends to the outside of the last heat exchange piece (3) at the back.

5. The heat exchanger of claim 1, wherein: The U-shaped plate (404) and the moving frame (403) are detachably connected through bolts.

6. The heat exchanger of claim 1, wherein: The mounting frame (4) and the first shell (1) and the second shell (2) are detachably connected through bolts.

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