Heat exchanger of hot air dryer

Abstract

The utility model discloses a heat exchanger of a hot air dryer, which belongs to the technical field of dryers and comprises a heat exchanger body, the top of the heat exchanger body is fixedly connected with one end of a pipeline, the other end of the pipeline is fixedly connected with an outer shell, the inner wall of the outer shell is slidably connected with an inner shell, and the inner side of the inner shell is provided with a convex groove. A sliding block is slidably connected to the inner wall of the convex groove, a coarse filter screen is fixedly connected to the inner side of the sliding block, a fine filter screen is arranged on the inner side of the inner shell, and an insertion rod is inserted into the inner wall of the sliding block; a sealing cover is removed from the top of a shell, then a convex strip can be pulled to be taken out from the inner wall of a convex groove, meanwhile, an insertion rod can be taken out from the inner wall of the convex groove, and then a coarse filter screen and a fine filter screen can be taken out to the outside together, so that the coarse filter screen and the fine filter screen are conveniently detached and cleaned; therefore, the problems that the filter screen is blocked and water circulation is affected due to the fact that the filter screen is inconvenient to clean are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a heat exchanger of a hot air dryer. Background Art

[0002] A heat exchanger is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. Currently, it is mainly divided into cast iron, cylindrical, steel, water storage, plate and other types. It is very popular among the public due to its high efficiency and energy saving, compact structure, small footprint, light weight and easy installation.

[0003] In the patent document with the published announcement number CN215373430U, a heat exchanger for a dryer is provided, including a shell, the upper and lower surfaces of which are respectively fixedly mounted with an air inlet pipe and an air outlet pipe, and the front and rear walls of the shell are provided with grooves, the shell is movably mounted with sliders through the grooves, and the front and rear walls of the two sets of sliders are fixedly mounted with connecting rods, tube sheets are fixedly mounted between the positions of the two ends of the connecting rods that are close to each other and between the positions of the front and rear walls of the shell, and four sets of baffles are arranged between the positions of the outer walls of the two sets of tube sheets that are close to each other, and several sets of tube bundles are fixedly mounted between the positions of the outer walls of the two sets of tube sheets that are close to each other. The heat exchanger for a dryer described in the utility model can soften water before entering the tube bundle, thereby avoiding blockage of the internal pipes, thereby increasing its service life, and at the same time simplifying the operation steps during disassembly and cleaning, making the later maintenance work more convenient.

[0004] The above structure uses a filter to filter water, but the above device is not convenient for disassembling and cleaning the filter. Since the filter is set in the water for a long time to filter the water, a large amount of impurities will accumulate on the surface of the filter. It is not convenient to clean the filter, which will cause the filter to be blocked and affect the water circulation.

[0005] For this purpose we propose a heat exchanger for hot air dryer. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a heat exchanger for a hot air dryer, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a heat exchanger for a hot air dryer comprises a heat exchanger body, the top of the heat exchanger body is fixedly connected to one end of a pipe, the other end of the pipe is fixedly connected to an outer shell, the inner wall of the outer shell is slidably connected to an inner shell, a convex groove is provided on the inner side of the inner shell, a slider is slidably connected to the inner wall of the convex groove, a coarse filter is fixedly connected to the inner side of the slider, a fine filter is provided on the inner side of the inner shell, a plug rod is inserted into the inner wall of the slider, a convex strip is inserted into the outer edge of the plug rod, and a heating rod is fixedly assembled on the inner bottom of the outer shell.

[0008] As a preferred technical solution of the utility model, four pads 1 are fixedly assembled on the bottom of the heat exchanger body, and the four pads 1 are distributed in a ring shape on the outer edge of the heat exchanger body, and four pads 2 are fixedly assembled on the bottom of the outer shell, and the four pads 2 are symmetrically arranged at the bottom of the outer shell, and the bottoms of the pads 1 and 2 are in the same plane.

[0009] By adopting the above technical solution, the heat exchanger body and the shell can be stably placed on the ground to ensure that they will not shake or shift in position at will during operation, thereby ensuring their stability.

[0010] As a preferred technical solution of the utility model, a slider is also fixedly mounted on the outer side of the fine filter, and the slider is also arranged at the outer edge of the insertion rod, and the coarse filter is arranged below the fine filter.

[0011] By adopting the above technical solution, the coarse filter and the fine filter can be stably installed on the inner wall of the inner shell using a slider, so that the water discharged into the inner cavity of the inner shell can be easily filtered twice to ensure the purity of the water, thereby ensuring that impurities in the water will not settle at the inner bottom of the outer shell and contact the heating rod.

[0012] As a preferred technical solution of the utility model, an insertion hole is provided at the inner bottom of the convex groove, and the bottom end of the insertion rod is inserted into the inner wall position of the insertion hole.

[0013] By adopting the above technical solution, the insertion rod can be positioned to ensure that the insertion rod is positioned on the inner wall of the convex groove and will not tip over or shift at will, thereby ensuring the stability of the insertion rod in positioning the coarse filter and the fine filter.

[0014] As a preferred technical solution of the utility model, the outer side of the convex strip fits with the inner wall of the convex groove, and the bottom of the convex strip abuts against the top position of the fine filter.

[0015] By adopting the above technical solution, the fine filter can be abutted to ensure that the fine filter will not be arbitrarily shifted when it is arranged on the inner wall of the inner shell, so that the water can be fully filtered.

[0016] As a preferred technical solution of the utility model, a sealing cover is provided on the top of the outer shell, a positioning frame is provided on the bottom of the sealing cover, and the positioning frame is arranged on the inner wall of the inner shell and fits with the inner side of the inner shell, and a handle is fixedly installed on the top of the sealing cover.

[0017] By adopting the above technical solution, the sealing cover can be stably set at the top position of the outer shell, thereby sealing the inner shell, ensuring that the gas heated in the inner cavity of the inner shell will not be discharged to the outside at will, and heat exchange can only be carried out by relying on the pipeline to discharge the inner cavity of the heat exchanger body.

[0018] Beneficial effects of the utility model:

[0019] 1. By removing the sealing cover from the top position of the shell, the convex bar can be pulled to be taken out from the inner wall position of the convex groove, and the insertion rod can be taken out from the inner wall position of the convex groove, and then the coarse filter and the fine filter can be taken out to the outside together, so that the coarse filter and the fine filter can be disassembled and cleaned conveniently, thereby solving the problem that the filter is blocked due to the inconvenience of cleaning the filter, thus affecting the water circulation.

[0020] 2. The water can be filtered twice through the coarse filter and the fine filter to ensure the effect of water filtration, thereby ensuring that impurities in the water will not settle to the inner bottom of the shell and contact the heating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0023] Figure 3 This is a schematic diagram of the sealing cover structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the expanded structure of the utility model.

[0025] In the figure: 1. heat exchanger body; 2. gasket one; 3. pipeline; 4. outer shell; 5. gasket two; 6. sealing cover; 7. inner shell; 8. convex groove; 9. slider; 10. coarse filter; 11. fine filter; 12. plug rod; 13. convex strip; 14. heating rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in 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 in 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.

[0027] See also Figure 1-Figure 4 The heat exchanger of the hot air dryer includes a heat exchanger body 1, one end of a pipe 3 is fixedly connected to the top of the heat exchanger body 1, the other end of the pipe 3 is fixedly connected to an outer shell 4, the inner wall of the outer shell 4 is slidably connected to an inner shell 7, a convex groove 8 is provided on the inner side of the inner shell 7, a slider 9 is slidably connected to the inner wall of the convex groove 8, a coarse filter 10 is fixedly connected to the inner side of the slider 9, a fine filter 11 is provided on the inner side of the inner shell 7, a plug rod 12 is inserted into the inner wall of the slider 9, a convex strip 13 is inserted into the outer edge of the plug rod 12, and a heating rod 14 is fixedly assembled on the inner bottom of the outer shell 4.

[0028] See also Figure 1 The bottom of the heat exchanger body 1 is fixedly equipped with four pads 2, and the four pads 2 are distributed in a ring shape at the outer edge of the heat exchanger body 1. The bottom of the shell 4 is fixedly equipped with four pads 2 5, and the four pads 2 5 are symmetrically arranged at the bottom of the shell 4. The bottoms of the pads 1 2 and the pads 2 5 are in the same plane, so that the heat exchanger body 1 and the shell 4 can be stably placed on the ground to ensure that they will not shake or shift in position at will during operation, thereby ensuring their stability.

[0029] See also Figure 4 The outer side of the fine filter 11 is also fixedly equipped with a slider 9, and the slider 9 is also set at the outer edge of the insertion rod 12. The coarse filter 10 is set below the fine filter 11, so that the slider 9 can be used to stably install the coarse filter 10 and the fine filter 11 on the inner wall of the inner shell 7, so as to facilitate the secondary filtration of the water discharged into the inner cavity of the inner shell 7, thereby ensuring the purity of the water and preventing impurities in the water from settling at the inner bottom of the outer shell 4 and contacting the heating rod 14.

[0030] See also Figure 4 A plug hole is provided at the inner bottom of the convex groove 8, and the bottom end of the plug rod 12 is inserted into the inner wall of the plug hole, so that the plug rod 12 can be positioned to ensure that the plug rod 12 is positioned on the inner wall of the convex groove 8 and will not fall or shift at will, thereby ensuring the stability of the positioning of the coarse filter screen 10 and the fine filter screen 11 by the plug rod 12.

[0031] See also Figure 4The outer side of the convex strip 13 fits with the inner wall of the convex groove 8, and the bottom of the convex strip 13 abuts against the top position of the fine filter 11, so that the fine filter 11 can be abutted against and ensure that the fine filter 11 will not be arbitrarily shifted when it is set on the inner wall of the inner shell 7, so that the water can be fully filtered.

[0032] See also Figure 3 A sealing cover 6 is provided on the top of the outer shell 4, and a positioning frame is provided on the bottom of the sealing cover 6. The positioning frame is arranged on the inner wall of the inner shell 7 and fits with the inner side of the inner shell 7. A handle is fixedly installed on the top of the sealing cover 6, so that the sealing cover 6 can be stably set at the top position of the outer shell 4, thereby sealing the inner shell 7, ensuring that the gas heated in the inner cavity of the inner shell 7 will not be discharged to the outside at will, but can only rely on the pipe 3 to discharge the inner cavity of the heat exchanger body 1 for heat exchange.

[0033] Working principle: When using the device, the heating rod 14 can be driven to perform heating operations, so that the water in the inner cavity of the inner shell 7 can be heated. The hot air generated during heating can be discharged through the pipe 3 to the inner cavity position of the heat exchanger body 1 for heat exchange. First, when the fine filter 11 and the coarse filter 10 need to be removed for cleaning and maintenance, the sealing cover 6 can be first removed from the top position of the outer shell 4, and then the convex bar 13 can be pulled to remove it from the inner wall position of the convex groove 8, and the insertion rod 12 can be removed from the inner wall position of the convex groove 8 at the same time, and then the coarse filter 10 and the fine filter 11 can be taken out to the outside together, so as to facilitate the disassembly and cleaning of the coarse filter 10 and the fine filter 11.

[0034] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat exchanger for a hot air dryer, comprising a heat exchanger body (1), characterized in that: The top of the heat exchanger body (1) is fixedly connected to one end of a pipe (3), the other end of the pipe (3) is fixedly connected to an outer shell (4), the inner wall of the outer shell (4) is slidably connected to an inner shell (7), a convex groove (8) is provided on the inner side of the inner shell (7), a slider (9) is slidably connected to the inner wall of the convex groove (8), a coarse filter (10) is fixedly connected to the inner side of the slider (9), a fine filter (11) is provided on the inner side of the inner shell (7), an insertion rod (12) is inserted into the inner wall of the slider (9), a convex strip (13) is inserted into the outer edge of the insertion rod (12), and a heating rod (14) is fixedly mounted on the inner bottom of the outer shell (4).

2. The heat exchanger of the hot air dryer according to claim 1, characterized in that: The bottom of the heat exchanger body (1) is fixedly equipped with four pads (2), and the four pads (2) are distributed in a ring shape at the outer edge of the heat exchanger body (1). The bottom of the shell (4) is fixedly equipped with four pads (5), and the four pads (5) are symmetrically arranged at the bottom of the shell (4), and the bottoms of the pads (2) and the pads (5) are in the same plane.

3. The heat exchanger of the hot air dryer according to claim 1, characterized in that: The outer side of the fine filter (11) is also fixedly equipped with a slider (9), and the slider (9) is also arranged at the outer edge of the insertion rod (12). The coarse filter (10) is arranged at a position below the fine filter (11).

4. The heat exchanger of the hot air dryer according to claim 1, characterized in that: The inner bottom of the convex groove (8) is provided with an insertion hole, and the bottom end of the insertion rod (12) is inserted into the inner wall of the insertion hole.

5. The heat exchanger of the hot air dryer according to claim 1, characterized in that: The outer side of the convex strip (13) fits with the inner wall of the convex groove (8), and the bottom of the convex strip (13) abuts against the top position of the fine filter screen (11).

6. The heat exchanger of the hot air dryer according to claim 1, characterized in that: A sealing cover (6) is provided on the top of the outer shell (4), a positioning frame is provided on the bottom of the sealing cover (6), and the positioning frame is arranged on the inner wall of the inner shell (7) and fits with the inner side of the inner shell (7), and a handle is fixedly mounted on the top of the sealing cover (6).

Images