Heat exchanger convenient for cleaning internal dirt

Abstract

The invention relates to the field of heat exchangers, and discloses a heat exchanger convenient for cleaning internal dirt, which comprises a shell structure, the shell structure comprises a shell side, a hot water inlet pipe is arranged at one end of the top of the shell side, a hot water outlet pipe is arranged at one end of the bottom of the shell side, and a cold water inlet pipe is arranged at the top of the shell side. A shell pass is arranged at one end of the top of the inner water pipe, a cold water outlet pipe is arranged at the other end of the top of the shell pass, a baffle is arranged at the other end of the shell pass, the baffle is of a hollow interlayer design, and a hand wheel is arranged on one side of the baffle. And internal cleaning can be carried out under the condition that the machine is not stopped. A user only needs to rotate the hand wheel, the scraping plate can be driven to scrape the outer wall of the inner water pipe, and attached water scales are effectively removed. The cleaning efficiency and thoroughness are improved, the service life of the heat exchanger is prolonged, and meanwhile the stability of the heat exchange efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a heat exchanger that facilitates the cleaning of internal dirt. Background Technology

[0002] The patent application with publication number CN218238483U includes a second tube box and a cleaning assembly. A first tube box and a third tube box are respectively arranged on the left and right sides of the second tube box. A through groove is opened at the upper end of the second tube box. Several sets of heat exchange tubes are arranged inside the second tube box. A frame is fixedly connected to the surface of the second tube box at a position corresponding to the through groove. A chemical inlet is provided on the left side of the front end of the second tube box. The advantages are: the cleaning assembly, by starting the drive motor, causes the first brush to clean the inner wall of the second tube box and the second brush to clean the outer wall of the heat exchange tubes, preventing the heat exchanger from being clogged by dirt, thereby improving heat exchange efficiency, reducing energy consumption, and extending the life of the heat exchanger. Furthermore, the use of a fixing block, fixing column, rotating block, and slot facilitates the installation and disassembly of the first and third tube boxes by operators, meeting their needs.

[0003] In the aforementioned patents or prior art, the large amount of hard scale in the dead corners inside the pipe, the narrow internal space, the numerous dead corners of the baffles, and the structural limitations make it difficult to clean thoroughly even after disassembling the inner pipe. Summary of the Invention

[0004] The problem this invention aims to solve is that cleaning is incomplete due to structural limitations, and manual cleaning is difficult to achieve.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a heat exchanger that facilitates cleaning of internal dirt, comprising a shell structure, the shell structure comprising a shell side, a hot water inlet pipe provided at one end of the top of the shell side, a hot water outlet pipe provided at one end of the bottom of the shell side, a cold water inlet pipe provided at the top of the shell side, a cold water outlet pipe provided at the other end of the top of the shell side, and a baffle provided at the other end of the shell side, the baffle having a hollow sandwich design, and a handwheel provided on one side of the baffle.

[0006] Preferably, the shell side is provided with a plurality of internal water pipes, and one end of the plurality of internal water pipes is provided with a descaling structure, the descaling structure including: an inner wheel, and the inner arc surface of the inner wheel is provided with two scrapers.

[0007] Preferably, the outer arc surface of the inner wheel is provided with a plurality of main telescopic rods in a ring array, and one end of each main telescopic rod is provided with a rotating shaft, which is rotatably connected to the outer arc surface of the inner wheel.

[0008] Preferably, a secondary telescopic rod is provided at the other end of the main telescopic rod, and one end of the secondary telescopic rod is slidably connected to the other end of the main telescopic rod.

[0009] Preferably, the outer arc surface of the inner wheel is provided with four supports in a circular array, and the other end of the auxiliary telescopic rod is rotatably connected to the outer arc surface of the supports.

[0010] Preferably, the inner arc surface of the bracket is symmetrically provided with two scrapers, which are adapted to the outer arc surface of the inner water pipe.

[0011] Preferably, the outer arc surface of the inner wheel is provided with an outer wheel, and the outer arc surface of the outer wheel is provided with several supports in a circular array. Several main telescopic rods are rotatably connected to the outer arc surface of the outer wheel, and a secondary telescopic rod is provided at one end of each main telescopic rod, and a support is provided at one end of each secondary telescopic rod.

[0012] Preferably, four connecting plates are arranged in a circular array on one side of the outer wheel, and connecting rods are provided on the inner arc surfaces of the four connecting plates. One end of the four connecting rods is fixedly connected to the inner wheel.

[0013] Preferably, a sealing plate is provided on one side of the connecting plate, and the sealing plate is adapted to the hollow interlayer of the baffle to achieve a sealing effect, and the top of the connecting plate is fixedly connected to the handwheel.

[0014] Preferably, the inner wall of the shell side is provided with a plurality of baffles, which are adapted to the inner water pipe.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The descaling structure operated by the handwheel can destroy the hard scale on the outer wall of the inner pipe. Due to its brittle texture, it will peel off in one piece under the action of the scraper, which makes it easier for the staff to clean. In particular, the dead corner formed by the water baffle and the inner water plate is difficult to remove completely by traditional cleaning methods. The handwheel is rotated back and forth, and multiple scrapers are driven to work at the same time under the action of the inner wheel, outer wheel and telescopic rod, which can complete the cleaning operation more conveniently. In addition, due to the pure mechanical design, the reliability is guaranteed. At the same time, the cost is relatively low compared with the automated cleaning mechanism. (2) The sealing plate and double baffle can effectively seal the machine, allowing the handwheel to be externally mounted. This makes it convenient for operators to effectively remove hard scale inside the machine without disassembling it. Since this design does not affect the normal heat exchange process, cleaning can be carried out without stopping the machine. If this cleaning step is incorporated into the daily process, scale will be difficult to accumulate, greatly extending the machine maintenance and descaling cycle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a side view of the descaling structure of the present invention; Figure 5 This is a schematic diagram of the descaling structure of the present invention; Figure 6 This is a schematic diagram of the tie rod structure of the present invention; Figure 7 This is a side view of the overall structure of the present invention; Figure 8 For the present invention Figure 3 A magnified view of a portion of point A shown.

[0017] In the diagram: 1. Outer shell structure; 101. Hot water inlet pipe; 102. Hot water outlet pipe; 103. Cold water inlet pipe; 104. Cold water outlet pipe; 105. Shell side; 106. Baffle; 2. Handwheel; 3. Water baffle plate; 4. Descaling structure; 401. Scraper; 402. Bracket; 403. Connecting rod; 404. Outer wheel; 405. Inner wheel; 406. Secondary telescopic rod; 407. Main telescopic rod; 408. Shaft; 409. Connecting plate; 410. Sealing plate; 5. Inner water pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0019] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0020] like Figures 1 to 8 As shown, the present invention provides a heat exchanger that facilitates cleaning of internal dirt, including a shell structure 1. The shell structure 1 includes a shell side 105. A hot water inlet pipe 101 is provided at one end of the top of the shell side 105, a hot water outlet pipe 102 is provided at one end of the bottom of the shell side 105, a cold water inlet pipe 103 is provided at the top of the shell side 105, a cold water outlet pipe 104 is provided at the other end of the top of the shell side 105, and a baffle 106 is provided at the other end of the shell side 105. The baffle 106 has a hollow sandwich design, and a handwheel 2 is provided on one side of the baffle 106.

[0021] The shell side 105 is provided with a number of internal water pipes 5. One end of each of the internal water pipes 5 is provided with a descaling structure 4. The descaling structure 4 includes an inner wheel 405, and the inner arc surface of the inner wheel 405 is provided with two scrapers 401.

[0022] The outer arc surface of the inner wheel 405 is provided with several main telescopic rods 407 in a ring array. One end of the main telescopic rod 407 is provided with a rotating shaft 408, which is rotatably connected to the outer arc surface of the inner wheel 405.

[0023] A secondary telescopic rod 406 is provided at the other end of the main telescopic rod 407, and one end of the secondary telescopic rod 406 is slidably connected to the other end of the main telescopic rod 407.

[0024] The outer arc surface of the inner wheel 405 is provided with four supports 402 in a ring array, and the other end of the auxiliary telescopic rod 406 is rotatably connected to the outer arc surface of the support 402.

[0025] The inner arc surface of the bracket 402 is symmetrically provided with two scrapers 401, which are adapted to the outer arc surface of the inner water pipe 5.

[0026] The outer arc surface of the inner wheel 405 is provided with an outer wheel 404. The outer arc surface of the outer wheel 404 is provided with several supports 402 in a ring array. Several main telescopic rods 407 are rotatably connected to the outer arc surface of the outer wheel 404. A secondary telescopic rod 406 is provided at one end of the main telescopic rod 407. A support 402 is provided at one end of the secondary telescopic rod 406.

[0027] Four connecting plates 409 are arranged in a circular array on one side of the outer wheel 404. Connecting rods 403 are provided on the inner arc surface of the four connecting plates 409. One end of the four connecting rods 403 is fixedly connected to the inner wheel 405.

[0028] A sealing plate 410 is provided on one side of the connecting plate 409. The sealing plate 410 is adapted to the hollow interlayer of the baffle 106 to achieve a sealing effect. The top of the connecting plate 409 is fixedly connected to the handwheel 2.

[0029] The inner wall of the shell side 105 is provided with several water baffles 3, which are adapted to the inner water pipes 5.

[0030] The working principle and usage process of this invention are as follows: During use, it is divided into a normal operating stage and a descaling stage. During normal operating, hot water passes through the inner water pipe 5, and cold water passes through the shell side 105. Under the action of the baffle plate 3, the cold water fully contacts the thermally conductive inner water pipe 5 and absorbs its heat before being carried out. During this process, scale will form on the outer wall of the inner water pipe 5 and the baffle plate 3. When excessive scale reduces the water flow and affects the heat exchange efficiency, the external handwheel 2 can be rotated in a short-stroke reciprocating motion to drive the inner outer wheel 404 to rotate. When the outer wheel 404 rotates, it will drive the outermost support 402 to rotate via the telescopic rod. The inner arc scraper 401 rotates to destructively peel off the hard scale on the outer arc surface of the inner water pipe 5. Due to the brittle nature of the hard scale, when external force is applied, it will break into multiple hard scale blocks and detach from the water pipe surface as a whole. At the same time, the outer wheel 404 will drive the inner wheel 405 to rotate coaxially through the connecting rod 403. The inner wheel 405 will drive several supports on its outer arc surface to repeat the above descaling operation. Meanwhile, the inner arc scraper 401 performs the same descaling operation. In particular, the dead corners between the middle part of the inner water pipe 5 and the water baffle are difficult to clean manually. Finally, under the influence of water flow, the peeled scale will be carried out.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A heat exchanger facilitating cleaning of internal fouling, comprising a shell structure (1), characterized in that: The shell structure (1) includes a shell section (105), one end of the top of the shell section (105) is provided with a hot water inlet pipe (101), one end of the bottom of the shell section (105) is provided with a hot water outlet pipe (102), the top of the shell section (105) is provided with a cold water inlet pipe (103), the other end of the top of the shell section (105) is provided with a cold water outlet pipe (104), the other end of the shell section (105) is provided with a baffle (106), the baffle (106) is a hollow sandwich design, one side of the baffle (106) is provided with a hand wheel (2).

2. The heat exchanger of claim 1, wherein: The inside of the shell section (105) is provided with a plurality of inner water pipes (5), one end of the plurality of inner water pipes (5) is provided with a descaling structure (4), the descaling structure (4) comprises: an inner wheel (405), the inner arc surface of the inner wheel (405) is provided with two scrapers (401).

3. The heat exchanger of claim 2, wherein: The outer arc surface of the inner wheel (405) is provided with a plurality of main stretchable rods (407) in a ring array, one end of the main stretchable rod (407) is provided with a rotating shaft (408), and the rotating shaft (408) is rotatably connected with the outer arc surface of the inner wheel (405).

4. The heat exchanger of claim 3, wherein: The other end of the main stretchable rod (407) is provided with a secondary stretchable rod (406), and one end of the secondary stretchable rod (406) is slidably connected with the other end of the main stretchable rod (407).

5. The heat exchanger of claim 1, wherein: The outer arc surface of the inner wheel (405) is provided with four supports (402) in a ring array, and the other end of the secondary stretchable rod (406) is rotatably connected with the outer arc surface of the support (402).

6. The heat exchanger of claim 1, wherein: The inner arc surface of the support (402) is symmetrically provided with two scrapers (401), and the scraper (401) is matched with the outer arc surface of the inner water pipe (5).

7. The heat exchanger of claim 1, wherein: The outer arc surface of the inner wheel (405) is provided with an outer wheel (404), the outer arc surface of the outer wheel (404) is provided with a plurality of supports (402) in a ring array, the outer arc surface of the outer wheel (404) is rotatably connected with a plurality of main stretchable rods (407), one end of the main stretchable rod (407) is provided with a secondary stretchable rod (406), and one end of the secondary stretchable rod (406) is provided with a support (402).

8. The heat exchanger of claim 1, wherein: One side of the outer wheel (404) is provided with four connecting plates (409) in a ring array, the inner arc surface of the four connecting plates (409) is provided with a connecting rod (403), and one end of the four connecting rods (403) is fixedly connected with the inner wheel (405).

9. The heat exchanger of claim 1, wherein: One side of the connecting plate (409) is provided with a sealing plate (410), the sealing plate (410) is matched with the hollow sandwich of the baffle (106) to achieve sealing effect, and the top of the connecting plate (409) is fixedly connected with the hand wheel (2).

10. The heat exchanger of claim 1, wherein: The inner wall of the shell section (105) is provided with a plurality of water isolation plates (3), and the water isolation plate (3) is matched with the inner water pipe (5).

Images