Dust screen with quick release structure for heat exchanger
Patent Information
- Application Number
- CN202522129510.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-09
AI Technical Summary
首先，在安装和拆卸方面，大多采用焊接、铆接或者复杂的螺栓连接等方式，安装拆卸过程繁琐，耗费大量的时间和人力，不便于对防尘网进行及时的清洗和更换
（一）、该具有快拆结构的换热器用防尘网，通过在对过滤网进行拆卸时，工作人员反向转动连接板上的螺母，使其与管箱的螺纹连接松开，然后将防尘过滤件沿着定位槽滑出，即可完成拆卸。通过卡条与定位槽的滑动适配以及连接板与管箱的螺纹连接，实现了防尘过滤件的快速安装与拆卸，便于对防尘网进行清洗、更换等维护操作，节省了维护时间和人力成本。
Smart Images
Figure CN224905859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchanger technology, specifically to a dustproof screen for heat exchangers with a quick-release structure. Background Technology
[0002] During the operation of a heat exchanger, fluids (such as air and coolant) often carry dust and impurities into the heat exchanger. If these dust and impurities accumulate over time, they can clog the flow channels, reducing heat exchange efficiency, and cause wear on internal components, shortening the heat exchanger's lifespan. Therefore, to ensure the normal operation and efficient heat exchange of the heat exchanger, dust filters are typically installed in areas such as the tube box to filter the incoming fluid.
[0003] However, traditional heat exchanger dust filters have several problems. First, in terms of installation and disassembly, they mostly use welding, riveting, or complex bolt connections, making the process cumbersome, time-consuming, and labor-intensive, and hindering timely cleaning and replacement. Second, regarding cleaning and maintenance, traditional dust filters lack effective automatic cleaning mechanisms. When a large amount of dust and impurities accumulate on the surface of the filter, it needs to be manually removed for cleaning, which is not only troublesome but may also damage the filter during the cleaning process, affecting the continuous operation of the heat exchanger. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a dustproof screen for heat exchangers with a quick-release structure, including a tube box, a positioning groove on the inner wall of the tube box, a guide pipe fixedly installed on the outer surface of the tube box, a dustproof filter element set inside the tube box through the positioning groove, and the dustproof filter element threadedly installed on the outer surface of the tube box, a cleaning component rotatably installed inside the dustproof filter element, and a drain pipe fixedly installed on the outer surface of the dustproof filter element; when installing the dustproof filter element, the operator aligns the retaining strip of the dustproof filter element with the positioning groove on the inner wall of the tube box, slides it along the positioning groove to initially position the dustproof filter element, and then installs the connecting plate on the outer surface of the tube box through the thread to complete the installation of the dustproof filter element.
[0005] The cleaning component includes a motor, a connecting shaft is fixedly installed at the output end of the motor, blades are rotatably installed on the outer surface of the connecting shaft, a rotating shaft is rotatably installed at the center of the connecting shaft, and a brush screen is sleeved on the outer surface of the rotating shaft.
[0006] Preferably, the motor is fixedly installed at the center of the outer surface of the dust filter element. The output end of the motor drives the connecting shaft, blades, rotating shaft, and brush screen to rotate inside the dust filter element, and the brush screen is frictionally fitted with the dust filter element. Impurities filtered in the fluid will adhere to the surface of the filter screen. At this time, the operator starts the motor, and the output end of the motor drives the connecting shaft to rotate. The connecting shaft drives the blades to rotate, and the rotation of the blades can guide and stir the fluid to improve the fluidity and ensure that the fluid comes into full contact with the filter screen.
[0007] Preferably, the filter element includes a sleeve rod, a shaft plate is fixedly mounted on the outer surface of the sleeve rod, an mounting strip is fixedly mounted on the outer surface of the shaft plate, and a cleaning brush is fixedly mounted on the surface of the mounting strip. This cleaning assembly allows for automatic cleaning of the filter screen during fluid flow or when the motor is started independently. The rotation of the blades facilitates fluid flow and loosening of impurities. Simultaneously, the connecting shaft drives the blades to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft, in turn, drives the sleeve rod to rotate via the shaft plate and mounting strip. The cleaning brush rubs against the filter screen, sweeping away impurities from its surface. These swept-away impurities can be discharged through a drain pipe.
[0008] Preferably, the sleeve is fitted onto the outer surface of the rotating shaft, and the cleaning brush is configured with a bent structure, with the bent surface of the cleaning brush rubbing against the dust filter element. The cleaning brush is configured as a bent, elongated structure, and its bent surface can generate friction with the filter screen. The rotation of the cleaning brush cleans the filter screen. Furthermore, the bent part of the cleaning brush can contact the dead corners of the filter screen edges, achieving comprehensive cleaning of impurities on the filter screen surface, reducing the workload of manual cleaning, and enabling timely cleaning of the filter screen to prevent clogging due to excessive impurities, thus ensuring the continuity of the filtration effect.
[0009] Preferably, the dust filter includes a connecting plate, a filter screen is fixedly installed on one side of the outer surface of the connecting plate, a connecting ring is fixedly installed on the outer surface of the filter screen, and a retaining strip is fixedly installed on the surface of the connecting ring. During heat exchanger operation, fluid enters the tube box from the guide pipe. When passing through the dust filter, the filter screen filters out dust and other impurities in the fluid. The filtered fluid enters the tube box, while the impurities are intercepted on the surface of the filter screen. The filter screen effectively intercepts dust and other impurities in the fluid, ensuring the cleanliness of the fluid entering the heat exchanger tube box, reducing wear and blockage of internal components by impurities, thereby extending the service life of the heat exchanger and improving its heat exchange efficiency.
[0010] Preferably, the connecting plate is threaded onto the outer surface of the pipe box, and the retaining strip is slidably fitted with the positioning groove. When disassembling the filter screen, the operator rotates the nut on the connecting plate in the opposite direction to loosen its threaded connection with the pipe box, and then slides the dust filter element along the positioning groove to complete the disassembly. The sliding fit between the retaining strip and the positioning groove, along with the threaded connection between the connecting plate and the pipe box, enables rapid installation and disassembly of the dust filter element, facilitating cleaning, replacement, and other maintenance operations of the dust filter, thus saving maintenance time and labor costs.
[0011] This utility model provides a dust filter for heat exchangers with a quick-release structure. It has the following advantages: (i) The dust filter for the heat exchanger with a quick-release structure can be disassembled by the operator turning the nut on the connecting plate in the opposite direction to loosen its threaded connection with the tube box, and then sliding the dust filter out along the positioning groove. The sliding fit between the clip and the positioning groove, along with the threaded connection between the connecting plate and the tube box, enables quick installation and removal of the dust filter, facilitating cleaning, replacement, and other maintenance operations, thus saving maintenance time and labor costs.
[0012] (ii) The dust filter for the heat exchanger with quick-release structure helps the fluid flow and loosen impurities through the rotation of the blades. The rotation of the bent cleaning brush can contact the dead corners of the filter screen edge, directly cleaning the impurities on the filter screen surface, reducing the amount of manual cleaning work, and can clean the filter screen in time, avoiding the filter screen from being blocked due to excessive impurities, and ensuring the continuity of the filtration effect.
[0013] (III) The dust filter for the heat exchanger with a quick-release structure works as follows: When the heat exchanger is running, the fluid enters the tube box from the guide pipe. As it passes through the dust filter, the filter screen removes dust and other impurities from the fluid. The filtered fluid then enters the tube box, while the impurities are trapped on the surface of the filter screen. The filter screen effectively intercepts dust and other impurities in the fluid, ensuring the cleanliness of the fluid entering the heat exchanger tube box, reducing wear and blockage of internal components caused by impurities, thereby extending the service life of the heat exchanger and improving its heat exchange efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the disassembly structure of the dustproof filter and the tube box of this utility model; Figure 3 This is a schematic cross-sectional view of the guide tube of this utility model; Figure 4 This is a cross-sectional structural diagram of the dustproof filter element of this utility model; Figure 5This is a schematic diagram of the structure of the brushing component of this utility model; Figure 6 This is a schematic diagram showing the position and structure of the cleaning brush and filter screen of this utility model.
[0015] In the diagram: 1. Guide pipe; 2. Pipe box; 3. Dust filter; 31. Connecting plate; 32. Filter screen; 33. Clip; 34. Connecting ring; 4. Sewage pipe; 5. Cleaning assembly; 51. Blade; 52. Brush; 521. Cleaning brush; 522. Sleeve; 523. Mounting strip; 524. Shaft plate; 53. Rotating shaft; 54. Connecting shaft; 55. Motor; 6. Positioning groove. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1-6 This utility model provides a technical solution: a dustproof screen for a heat exchanger with a quick-release structure, including a tube box 2. The inner wall of the tube box 2 is provided with a positioning groove 6. A guide pipe 1 is fixedly installed on the outer surface of the tube box 2. A dustproof filter element 3 is provided inside the tube box 2 through the positioning groove 6, and the dustproof filter element 3 is threadedly installed on the outer surface of the tube box 2. A cleaning component 5 is rotatably installed inside the dustproof filter element 3. A drain pipe 4 is fixedly installed on the outer surface of the dustproof filter element 3. When installing the dustproof filter element 3, the worker aligns the retaining strip 33 of the dustproof filter element 3 with the positioning groove 6 on the inner wall of the tube box 2, slides it along the positioning groove 6 to initially position the dustproof filter element 3, and then installs the connecting plate 31 on the outer surface of the tube box 2 through the thread to complete the installation of the dustproof filter element 3.
[0018] The cleaning component 5 includes a motor 55, a connecting shaft 54 is fixedly installed at the output end of the motor 55, a blade 51 is rotatably installed on the outer surface of the connecting shaft 54, a rotating shaft 53 is rotatably installed at the axis of the connecting shaft 54, and a brush mesh 52 is sleeved on the outer surface of the rotating shaft 53.
[0019] The motor 55 is fixedly installed at the center of the outer surface of the dust filter element 3. The output end of the motor 55 drives the connecting shaft 54, blades 51, rotating shaft 53, and brush screen 52 to rotate inside the dust filter element 3. The brush screen 52 is frictionally fitted with the dust filter element 3. Impurities filtered in the fluid will adhere to the surface of the filter screen 32. At this time, the operator starts the motor 55. The output end of the motor 55 drives the connecting shaft 54 to rotate. The connecting shaft 54 drives the blades 51 to rotate. The rotation of the blades 51 can guide and stir the fluid to improve the fluidity and make the fluid fully contact the filter screen 32.
[0020] The brush assembly 52 includes a sleeve rod 522, on the outer surface of which a shaft plate 524 is fixedly mounted. An mounting strip 523 is fixedly mounted on the outer surface of the shaft plate 524, and a cleaning brush 521 is fixedly mounted on the surface of the mounting strip 523. The cleaning assembly 5 allows for automatic cleaning of the filter screen 32 during fluid flow or when the motor 55 is started independently. The rotation of the blades 51 facilitates fluid flow and loosens impurities. Simultaneously, the connecting shaft 54 drives the blades 51 to rotate, which in turn drives the rotating shaft 53 to rotate. The rotating shaft 53 then drives the sleeve rod 522 to rotate. The sleeve rod 522, through the shaft plate 524 and the mounting strip 523, drives the cleaning brush 521 to rotate. The cleaning brush 521 rubs against the filter screen 32, sweeping away impurities from its surface. These swept-away impurities can be discharged through the drain pipe 4.
[0021] The sleeve 522 is fitted onto the outer surface of the rotating shaft 53. The cleaning brush 521 is configured with a bent structure, and the bent surface of the cleaning brush 521 is frictionally adapted to the dust filter 3. The cleaning brush 521 is configured as a bent elongated structure, and its bent surface can generate friction with the filter screen 32. The rotation of the cleaning brush 521 cleans the filter screen 32. In addition, the bent part of the cleaning brush 521 can contact the dead corner of the edge of the filter screen 32, achieving all-round cleaning of impurities on the surface of the filter screen 32, reducing the workload of manual cleaning, and cleaning the filter screen 32 in a timely manner, preventing the filter screen 32 from being clogged due to excessive impurities, and ensuring the continuity of the filtration effect.
[0022] The dust filter element 3 includes a connecting plate 31. A filter screen 32 is fixedly installed on one side of the outer surface of the connecting plate 31. A connecting ring 34 is fixedly installed on the outer surface of the filter screen 32, and a retaining strip 33 is fixedly installed on the surface of the connecting ring 34. During heat exchanger operation, fluid enters the tube box 2 from the guide pipe 1. When passing through the dust filter element 3, the filter screen 32 filters dust and other impurities in the fluid. The filtered fluid enters the tube box 2, while the impurities are intercepted on the surface of the filter screen 32. The filter screen 32 effectively intercepts dust and other impurities in the fluid, ensuring the cleanliness of the fluid entering the heat exchanger tube box 2, reducing wear and blockage of internal components by impurities, thereby extending the service life of the heat exchanger and improving its heat exchange efficiency.
[0023] The connecting plate 31 is threaded onto the outer surface of the pipe box 2, and the retaining strip 33 is slidably fitted with the positioning groove 6. When disassembling the filter screen, the operator rotates the nut on the connecting plate 31 in the opposite direction to loosen its threaded connection with the pipe box 2, and then slides the dust filter element 3 along the positioning groove 6 to complete the disassembly. Through the sliding fit between the retaining strip 33 and the positioning groove 6, and the threaded connection between the connecting plate 31 and the pipe box 2, the dust filter element 3 can be quickly installed and disassembled, facilitating cleaning, replacement, and other maintenance operations of the dust filter, saving maintenance time and labor costs.
[0024] When using the dust filter 3, the operator aligns the clip 33 of the dust filter 3 with the positioning groove 6 on the inner wall of the pipe box 2, slides it along the positioning groove 6 to initially position the dust filter 3, and then installs the connecting plate 31 on the outer surface of the pipe box 2 by thread to complete the installation of the dust filter 3.
[0025] Impurities filtered from the fluid will adhere to the surface of the filter screen 32. At this time, the operator starts the motor 55. The output end of the motor 55 drives the connecting shaft 54 to rotate. The connecting shaft 54 drives the blades 51 to rotate. The rotation of the blades 51 can play a certain role in guiding and stirring the fluid, so as to improve the fluidity of the fluid and make the fluid fully contact the filter screen 32.
[0026] The cleaning component 5 is designed to automatically clean the filter screen 32 during fluid flow or when the motor 55 is started independently. The rotation of the blades 51 facilitates fluid flow and loosens impurities. Simultaneously, the connecting shaft 54 drives the blades 51 to rotate, which in turn drives the rotating shaft 53 to rotate. The rotating shaft 53 then drives the sleeve rod 522 to rotate. The sleeve rod 522, through the shaft plate 524 and the mounting strip 523, drives the cleaning brush 521 to rotate. The cleaning brush 521 rubs against the filter screen 32, sweeping away impurities from its surface. These swept-away impurities can be discharged through the drain pipe 4.
[0027] The cleaning brush 521 is designed with a bent strip structure. Its bent surface can generate friction with the filter screen 32. The rotation of the cleaning brush 521 cleans the filter screen 32. In addition, the bent part of the cleaning brush 521 can contact the dead corner of the edge of the filter screen 32, so as to clean the impurities on the surface of the filter screen 32 in all directions, reduce the workload of manual cleaning, and clean the filter screen 32 in time, so as to prevent the filter screen 32 from being blocked due to excessive impurities and ensure the continuity of the filtration effect.
[0028] During heat exchanger operation, fluid enters the tube box 2 from the guide pipe 1. As it passes through the dust filter 32, the filter screen 32 filters out dust and other impurities from the fluid. The filtered fluid then enters the tube box 2, while the impurities are trapped on the surface of the filter screen 32. The filter screen 32 effectively traps dust and other impurities in the fluid, ensuring the cleanliness of the fluid entering the heat exchanger tube box 2. This reduces wear and blockage of internal components caused by impurities, thereby extending the service life of the heat exchanger and improving its heat exchange efficiency.
[0029] When disassembling the filter screen, the operator rotates the nut on the connecting plate 31 in the opposite direction to loosen its threaded connection with the pipe box 2. Then, the dust filter element 3 slides out along the positioning groove 6 to complete the disassembly. The sliding fit between the locking strip 33 and the positioning groove 6, along with the threaded connection between the connecting plate 31 and the pipe box 2, enables quick installation and disassembly of the dust filter element 3. This facilitates cleaning, replacement, and other maintenance operations of the dust filter, saving maintenance time and labor costs.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dustproof screen for a heat exchanger with a quick-release structure, comprising a tube box (2), characterized in that: The inner wall of the pipe box (2) is provided with a positioning groove (6), and a guide pipe (1) is fixedly installed on the outer surface of the pipe box (2). A dust filter (3) is provided inside the pipe box (2) through the positioning groove (6), and the dust filter (3) is threadedly installed on the outer surface of the pipe box (2). A cleaning component (5) is rotatably installed inside the dust filter (3), and a sewage pipe (4) is fixedly installed on the outer surface of the dust filter (3). The cleaning component (5) includes a motor (55), a connecting shaft (54) is fixedly installed at the output end of the motor (55), a blade (51) is rotatably installed on the outer surface of the connecting shaft (54), a rotating shaft (53) is rotatably installed at the center of the connecting shaft (54), and a brush mesh (52) is sleeved on the outer surface of the rotating shaft (53).
2. A dustproof screen for a heat exchanger with a quick-release structure according to claim 1, characterized in that: The motor (55) is fixedly installed at the center of the outer surface of the dust filter (3). The output end of the motor (55) drives the connecting shaft (54), blade (51), rotating shaft (53) and brush (52) to rotate inside the dust filter (3). The brush (52) is frictionally adapted to the dust filter (3).
3. A dustproof screen for a heat exchanger with a quick-release structure according to claim 2, characterized in that: The brushing component (52) includes a sleeve (522), a shaft plate (524) is fixedly installed on the outer surface of the sleeve (522), an installation strip (523) is fixedly installed on the outer surface of the shaft plate (524), and a cleaning brush (521) is fixedly installed on the surface of the installation strip (523).
4. A dustproof screen for a heat exchanger with a quick-release structure according to claim 3, characterized in that: The sleeve (522) is sleeved on the outer surface of the rotating shaft (53), the cleaning brush (521) is configured as a bent structure, and the bent surface of the cleaning brush (521) is rubbed and adapted to the dust filter (3).
5. A dustproof screen for a heat exchanger with a quick-release structure according to claim 1, characterized in that: The dust filter (3) includes a connecting plate (31), a filter screen (32) is fixedly installed on one side of the outer surface of the connecting plate (31), a connecting ring (34) is fixedly installed on the outer surface of the filter screen (32), and a retaining strip (33) is fixedly installed on the surface of the connecting ring (34).
6. A dustproof screen for a heat exchanger with a quick-release structure according to claim 5, characterized in that: The connecting plate (31) is threaded onto the outer surface of the pipe box (2), and the clip (33) is slidably adapted to the positioning groove (6).