Heat exchanger convenient to maintain

Abstract

The heat exchanger convenient to maintain comprises a shell and arc-shaped covers, the arc-shaped covers are connected to the left side and the right side of the shell in a screwed mode, an installation frame is connected between the front side and the rear side of an inner cavity of the shell in a sliding mode, and heat exchange pipes are connected between the left side wall and the right side wall of an inner cavity of the installation frame in an inserted mode. And the heat exchange pipes are evenly distributed, the two ends of the heat exchange pipes penetrate through the mounting frame and the arc-shaped covers and extend to inner cavities of the arc-shaped covers on the left side and the right side, a mounting bin is fixedly connected to the upper side of the outer side wall of the shell, and a pressing plate is slidably connected between the left side wall and the right side wall of an inner cavity of the mounting bin. The structure design is reasonable, the heat exchange tube located in the shell can be rapidly taken out to be cleaned, the heat exchange tube can be conveniently maintained, impurities in water entering the heat exchange tube can be filtered, and the maintenance frequency of the heat exchange tube is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger which is easy to maintain. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. It is widely used in chemical, petroleum, power, food and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers.

[0003] The heat exchange tubes inside the existing heat exchanger are connected to the water baffles inside the shell by welding. When the scale in the heat exchange tubes needs to be cleaned after long-term use, it is inconvenient to disassemble and maintain the heat exchange tubes. In addition, the existing heat exchangers lack filtering means for the water flow entering the heat exchange tubes. After the water flow directly enters the heat exchange tubes, impurities in the water will adhere to the inner wall of the heat exchange tubes, resulting in the need to frequently clean the heat exchange tubes. For this reason, we propose a heat exchanger that is easy to maintain. Utility Model Content

[0004] The purpose of the utility model is to provide a heat exchanger that is easy to maintain, so as to solve the problem proposed in the above background technology that the heat exchange tubes inside the existing heat exchanger are connected to the water baffles in the outer shell by welding. When the scale in the heat exchange tubes needs to be cleaned after long-term use, it is inconvenient to disassemble and maintain the heat exchange tubes. The heat exchanger lacks filtering means for the water flow entering the heat exchange tubes. After the water flow directly enters the heat exchange tubes, impurities in the water will adhere to the inner wall of the heat exchange tubes, resulting in the need to frequently clean the heat exchange tubes.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat exchanger that is easy to maintain, comprising a shell and an arc-shaped cover, the arc-shaped cover is screwed on the left and right sides of the shell, a mounting frame is slidably connected between the front and rear sides of the inner cavity of the shell, a heat exchange tube is inserted between the left and right side walls of the inner cavity of the mounting frame, and the heat exchange tube is evenly distributed, the two ends of the heat exchange tube pass through the mounting frame and the arc-shaped cover and extend to the inner cavity of the arc-shaped cover on the left and right sides, a mounting bin is fixedly connected to the upper side of the outer wall of the shell, and the left and right sides of the inner cavity of the mounting bin are A pressure plate is slidably connected between the walls, and a fixing tenon is fixedly connected to the bottom of the pressure plate, and the fixing tenons are arranged in sequence from left to right, and the bottom end of the fixing tenon penetrates the outer shell and extends to the interior of the mounting frame, and a threaded connecting rod is screwed on the top of the mounting bin, and the bottom end of the threaded connecting rod penetrates the mounting bin and extends to the inner cavity of the mounting bin, and the bottom end of the threaded connecting rod is rotatably connected to the pressure plate, and a return spring is sleeved on the outer side wall of the threaded connecting rod, and a filter is screwed between the upper and lower sides of the inner cavity of the arc-shaped cover on the left and right sides.

[0006] As a further description of the above technical solution:

[0007] A cold water inlet is fixedly connected to the left side of the upper side of the outer side wall of the shell, and a cold water outlet is fixedly connected to the right side of the lower side of the outer side wall of the shell.

[0008] As a further description of the above technical solution:

[0009] A motor is fixedly connected to the left side wall of the arc-shaped cover on the left side, and a driving rod is fixedly connected to the right end of the power output shaft of the motor.

[0010] As a further description of the above technical solution:

[0011] The right end of the driving rod passes through the arc-shaped cover and the filter screen and extends to the right side wall of the filter screen, and the left and right sides of the outer side wall of the driving rod are fixedly connected with mounting rings.

[0012] As a further description of the above technical solution:

[0013] Brush plates are fixedly connected to the upper and lower sides of the outer side walls of the mounting rings on the left and right sides, and the inner side walls of the brush plates on the left and right sides are in contact with the filter screen.

[0014] As a further description of the above technical solution:

[0015] A hot water inlet is fixedly connected to the upper side of the outer side wall of the arc-shaped cover on the left side, and a hot water outlet is fixedly connected to the lower side of the outer side wall of the arc-shaped cover on the right side.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The heat exchanger which is easy to maintain, when the heat exchange tube needs to be cleaned, the right arc cover is removed from the shell, and then the threaded connecting rod is rotated to cancel the threaded connection between the threaded connecting rod and the mounting chamber, and then the threaded connecting rod is pulled up, so that the threaded connecting rod drives the pressure plate to squeeze the reset spring, so that the fixing tenon at the bottom of the pressure plate leaves the mounting frame and resets it into the mounting chamber so that the fixing tenon cancels the fixation of the mounting frame, and then the mounting frame together with the heat exchange tube is taken out from the shell, and the heat exchange tube is cleaned and maintained. After the cleaning is completed, the mounting frame is reinserted into the shell, and after being inserted into place, the threaded connecting rod is loosened to reset the reset spring to push the pressure plate down, so that the fixing tenon is inserted into the mounting frame to fix the mounting frame, so that the heat exchange tube inside the shell can be quickly taken out for cleaning, which is convenient for maintenance of the heat exchange tube.

[0018] 2. The heat exchanger which is easy to maintain, after hot water is injected into the arc-shaped cover on the left side through the hot water inlet, the impurities in the hot water are filtered through the filter screen, and the impurities in the hot water are adsorbed on the surface of the filter screen. Then, the driving rod is driven to rotate by the starting motor, so that the brush plates installed on both sides of the driving rod rotate along with the rotation of the driving rod, so that the brush plates on both sides clean the impurities on the filter screen to prevent the impurities from clogging the filter holes of the filter screen, thereby filtering the impurities in the water entering the heat exchange tube and reducing the maintenance frequency of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a heat exchanger that is easy to maintain proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of a front cross-sectional structure of a heat exchanger that is easy to maintain proposed by the utility model;

[0021] Figure 3 This is a right side cross-sectional structural schematic diagram of a heat exchanger that is easy to maintain proposed by the utility model;

[0022] Figure 4 A heat exchanger that is easy to maintain is proposed by the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0023] In the figure: 100, shell; 110, mounting frame; 111, heat exchange tube; 120, mounting compartment; 121, pressure plate; 122, fixing tenon; 130, threaded connecting rod; 131, return spring; 140, cold water inlet; 150, cold water outlet; 200, arc cover; 210, filter screen; 220, motor; 230, drive rod; 231, mounting ring; 240, brush plate; 250, hot water inlet; 260, hot water outlet. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a heat exchanger that is easy to maintain. The heat exchange tubes inside the shell can be quickly taken out for cleaning, which is convenient for maintenance of the heat exchange tubes. Impurities in the water entering the heat exchange tubes can be filtered, reducing the maintenance frequency of the heat exchange tubes. Please refer to Figure 1-4 , comprising a housing 100 and a curved cover 200;

[0028] Please refer again Figure 1-3The housing 100 is used to install the main structure. A mounting frame 110 is slidably connected between the front and rear sides of the inner cavity of the housing 100. The mounting frame 110 is used to install heat exchange tubes 111. The heat exchange tubes 111 are inserted between the left and right side walls of the inner cavity of the mounting frame 110, and the heat exchange tubes 111 are evenly distributed. The two ends of the heat exchange tubes 111 pass through the mounting frame 110 and the arc cover 200 and extend to the inner cavities of the arc covers 200 on the left and right sides. The upper side of the outer wall of the housing 100 is fixedly connected with a mounting bin 120. The mounting bin 120 is used to install the main structure. The mounting bin 120 slides between the left and right side walls of the inner cavity. A pressing plate 121 is connected, and the pressing plate 121 is used to install a fixing tenon 122. The bottom of the pressing plate 121 is fixedly connected with a fixing tenon 122, and the fixing tenon 122 is used to fix the mounting frame 110, and the fixing tenons 122 are arranged from left to right, and the bottom end of the fixing tenon 122 passes through the housing 100 and extends to the inside of the mounting frame 110. The top of the mounting chamber 120 is screwed with a threaded connecting rod 130, and the threaded connecting rod 130 is used to connect the pressing plate 121. The bottom end of the threaded connecting rod 130 passes through the mounting chamber 120 and extends to the inner cavity of the mounting chamber 120, and the bottom end of the threaded connecting rod 130 is connected to the inner cavity of the mounting chamber 120. The pressure plate 121 is rotatably connected, and the outer wall of the threaded connecting rod 130 is sleeved with a return spring 131. The upper left side of the outer wall of the shell 100 is fixedly connected with a cold water inlet 140, and the lower right side of the outer wall of the shell 100 is fixedly connected with a cold water outlet 150. When the heat exchange tube 111 needs to be cleaned, the right arc cover 200 is removed from the shell 100, and then the threaded connecting rod 130 is rotated to cancel the threaded connection relationship between the threaded connecting rod 130 and the installation chamber 120, and then the threaded connecting rod 130 is pulled up, so that the threaded connecting rod 130 drives the pressure plate 121 to squeeze After the reset spring 131, the fixing tenon 122 at the bottom of the pressing plate 121 leaves the mounting frame 110 and resets into the mounting chamber 120 so that the fixing tenon 122 cancels the fixation of the mounting frame 110. Then, the mounting frame 110 and the heat exchange tube 111 are taken out of the housing 100, and the heat exchange tube 111 is cleaned and maintained. After the cleaning is completed, the mounting frame 110 is reinserted into the housing 100. After the insertion is in place, the threaded connecting rod 130 is loosened to reset the reset spring 131 and push the pressing plate 121 downward, so that the fixing tenon 122 is inserted into the mounting frame 110 to fix the mounting frame 110.

[0029] In summary, the heat exchange tube 111 inside the housing 100 can be quickly taken out for cleaning, which facilitates maintenance of the heat exchange tube 111;

[0030] Please refer again Figure 1-4The arc cover 200 is screwed on the left and right sides of the shell 100, and a filter screen 210 is screwed between the upper and lower sides of the inner cavity of the left and right arc covers 200. The filter screen 210 is used to filter impurities in the water. The left side wall of the left arc cover 200 is fixedly connected with a motor 220, and the motor 220 is used to drive the driving rod 230. The right end of the power output shaft of the motor 220 is fixedly connected with the driving rod 230, and the driving rod 230 is used to install the driving brush plate 240. The right end of the driving rod 230 penetrates the arc cover 200 and the filter screen 210 and extends to the right side wall of the filter screen 210, and the outer side wall of the driving rod 230 is fixedly connected with a mounting ring 231 on the left and right sides. The mounting ring 231 is used to install the brush plate 240, and the outer side walls of the mounting rings 231 on the left and right sides are fixedly connected with the brush plate 240 on the upper and lower sides. The brush plates 240 are used to clean the filter 210. The inner side walls of the left and right brush plates 240 are in contact with the filter 210. The upper side of the outer side wall of the left arc cover 200 is fixedly connected with a hot water inlet 250, and the lower side of the outer side wall of the right arc cover 200 is fixedly connected with a hot water outlet 260. After hot water is injected into the left arc cover 200 through the hot water inlet 250, impurities in the hot water are filtered through the filter 210, and the impurities in the hot water are adsorbed on the surface of the filter 210. Then, the driving rod 230 is driven to rotate by starting the motor 220, so that the brush plates 240 installed on both sides of the driving rod 230 rotate with the rotation of the driving rod 230, so that the brush plates 240 on both sides clean the impurities on the filter 210 to prevent the impurities from clogging the filter holes of the filter 210;

[0031] In summary, impurities in the water entering the heat exchange tube 111 can be filtered, reducing the maintenance frequency of the heat exchange tube 111;

[0032] During specific use, when the technical personnel in this field need to clean the heat exchange tube 111, they remove the right arc cover 200 from the shell 100, and then rotate the threaded connecting rod 130 to cancel the threaded connection relationship between the threaded connecting rod 130 and the mounting chamber 120, and then pull up the threaded connecting rod 130 to make the threaded connecting rod 130 drive the pressure plate 121 to squeeze the return spring 131, so that the fixing tenon 122 at the bottom of the pressure plate 121 leaves the mounting frame 110 and returns to the mounting chamber 120 so that the fixing tenon 122 cancels the fixation of the mounting frame 110, and then takes the mounting frame 110 out of the shell 100 together with the heat exchange tube 111, cleans and maintains the heat exchange tube 111, and after the cleaning is completed, reinserts the mounting frame 110 into the shell 100, loosens the threaded connecting rod 130 after being inserted into place, and releases the return spring 131. 1 is reset to push the pressing plate 121 downward, so that the fixing tenon 122 is inserted into the mounting frame 110 to fix the mounting frame 110. After hot water is injected into the arc-shaped cover 200 on the left side through the hot water inlet 250, impurities in the hot water are filtered through the filter screen 210, and the impurities in the hot water are adsorbed on the surface of the filter screen 210. Then, the filtered hot water enters the heat exchange tube 111 and undergoes heat exchange reaction with the cold water entering the housing from the cold water inlet 140. After the reaction is completed, it is discharged through the hot water outlet 260 and the cold water outlet 150. The driving rod 230 is driven to rotate by starting the motor 220, so that the brush plates 240 installed on both sides of the driving rod 230 rotate along with the rotation of the driving rod 230, so that the brush plates 240 on both sides clean the impurities on the filter screen 210 to prevent the impurities from clogging the filter holes of the filter screen 210.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat exchanger that is easy to maintain, characterized in that: The invention comprises a shell (100) and an arc-shaped cover (200), wherein the arc-shaped cover (200) is screwed on the left and right sides of the shell (100), a mounting frame (110) is slidably connected between the front and rear sides of the inner cavity of the shell (100), a heat exchange tube (111) is inserted between the left and right side walls of the inner cavity of the mounting frame (110), and the heat exchange tube (111) is evenly distributed, and both ends of the heat exchange tube (111) pass through the mounting frame (110) and the arc-shaped cover (200) and extend to the inner cavity of the arc-shaped cover (200) on the left and right sides, a mounting bin (120) is fixedly connected to the upper side of the outer wall of the shell (100), a pressure plate (121) is slidably connected between the left and right side walls of the inner cavity of the mounting bin (120), and the pressure plate (121) The bottom of the mounting chamber (121) is fixedly connected with a fixing tenon (122), and the fixing tenons (122) are arranged in sequence from left to right, the bottom end of the fixing tenon (122) passes through the housing (100) and extends to the interior of the mounting frame (110), the top of the mounting chamber (120) is screwed with a threaded connecting rod (130), the bottom end of the threaded connecting rod (130) passes through the mounting chamber (120) and extends to the inner cavity of the mounting chamber (120), and the bottom end of the threaded connecting rod (130) is rotatably connected to the pressure plate (121), the outer side wall of the threaded connecting rod (130) is sleeved with a return spring (131), and a filter screen (210) is screwed between the upper and lower sides of the inner cavity of the arc-shaped cover (200) on the left and right sides.

2. A heat exchanger easy to maintain according to claim 1, characterized in that: A cold water inlet (140) is fixedly connected to the left upper side of the outer wall of the shell (100), and a cold water outlet (150) is fixedly connected to the right lower side of the outer wall of the shell (100).

3. The heat exchanger easy to maintain according to claim 1, characterized in that: A motor (220) is fixedly connected to the left side wall of the arc-shaped cover (200) on the left side, and a driving rod (230) is fixedly connected to the right end of the power output shaft of the motor (220).

4. The heat exchanger easy to maintain according to claim 3, characterized in that: The right end of the driving rod (230) passes through the arc-shaped cover (200) and the filter screen (210) and extends to the right side wall of the filter screen (210), and mounting rings (231) are fixedly connected to the left and right sides of the outer side wall of the driving rod (230).

5. The heat exchanger easy to maintain according to claim 4, characterized in that: Brush plates (240) are fixedly connected to the upper and lower sides of the outer side walls of the installation rings (231) on the left and right sides, and the inner side walls of the brush plates (240) on the left and right sides are in contact with the filter screen (210).

6. The heat exchanger easy to maintain according to claim 1, characterized in that: A hot water inlet (250) is fixedly connected to the upper side of the outer wall of the left arc-shaped cover (200), and a hot water outlet (260) is fixedly connected to the lower side of the outer wall of the right arc-shaped cover (200).

Images