Cleaning device of heat exchanger

Abstract

The utility model relates to the technical field of heat exchanger cleaning, and provides a heat exchanger cleaning device which is characterized in that a cleaning assembly is arranged above a bearing disc in a cleaning tank cavity, when a heat exchanger to be cleaned is placed at the top of the bearing disc, the heat exchanger placed at the top of the bearing disc is showered through a water tank and a spray head, and the heat exchanger is cleaned. Meanwhile, a motor can be started to enable the output end of the motor to drive a first rotating shaft and a first conical tooth to synchronously rotate, at the moment, a second conical tooth meshed with one side of the first conical tooth synchronously rotates along with the first conical tooth and drives a second rotating shaft and an L-shaped rod to rotate, and at the moment, the L-shaped rod located on the outer side of the heat exchanger to be cleaned and a cleaning and scraping rubber strip do surrounding motion; through the design, the problem that sanitation dead angles occur when the heat exchanger is cleaned can be avoided, and then the cleaning degree is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger cleaning, and specifically, to a cleaning device for a heat exchanger. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers play an important role in many industrial productions such as chemical industry, petroleum, power, food and others. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used. And during the long-term use of heat exchangers, phased cleaning work needs to be carried out on them. Therefore, how to ensure the cleaning efficiency of heat exchangers is an urgent problem to be solved at present.

[0003] After retrieval, the cleaning device for a heat exchanger with the publication number of CN219977218U is disclosed, belonging to the technical field of heat exchanger cleaning. The device includes: a housing; a cleaning component, which is arranged and connected to the inner top of the housing for cleaning the heat exchanger; a controller, which is connected to the outer wall of the housing; a cleaning table, which is arranged at the inner bottom of the housing for placing the heat exchanger; and a pair of fixing components, which are symmetrically arranged and connected to the cleaning table for fixing the heat exchanger placed on the cleaning table. By combining multiple groups of long hair brushes and high-pressure nozzles, the cleaning degree of the surface of the heat exchanger can be improved; and by setting fixing components with adjustable spacing, heat exchangers of different sizes can be clamped, making the cleaning device more widely applicable. Moreover, the device has a simple structure, low manufacturing cost and strong practicability.

[0004] The above-mentioned cleaning device for a heat exchanger completes the cleaning work of the heat exchanger by lightly brushing the outside of the heat exchanger to be cleaned with long hair brushes in the housing. However, in this design, the long hair brushes can only lightly brush the upper surface of the heat exchanger and cannot lightly brush the side surface of the heat exchanger in a circular shape, which easily leads to ineffective cleaning of the sanitary dead corners on the surface of the heat exchanger. At the same time, the cleaning water in this design is directly discharged after being combined with the light brushing, which will result in a large amount of waste of cleaning water resources. Summary of the Utility Model

[0005] The utility model provides a cleaning device for a heat exchanger, which solves the problems in the prior art that when cleaning a heat exchanger with long hair brushes, it is easy to have ineffective cleaning of sanitary dead corners and a large amount of waste of cleaning water resources.

[0006] The technical solution of the present utility model is as follows: A cleaning device for a heat exchanger includes a cleaning tank and an opening and closing valve provided on the side of the cleaning tank. A flushing component is provided at the upper part of the cleaning tank. The flushing component includes a water tank. An inlet is fixedly connected to the top of the water tank. The water tank is fixedly connected to the top of the cleaning tank. A cleaning component is provided at the top of the cleaning tank. The cleaning component includes a motor for driving rotation. The cleaning component further includes an L-shaped rod. The L-shaped rod rotates and scrapes inside the cleaning tank cavity under the drive of the motor. A filtering component is provided inside the cleaning tank cavity. The filtering component includes an internal support ring. The internal support ring is fixedly connected to the inner wall of the cleaning tank cavity. A bearing tray for supporting the object to be cleaned is provided at the top of the internal support ring. A filter basket that is convenient for disassembly and assembly is threadedly connected to the bottom of the internal support ring.

[0007] Preferably, a first rotating shaft is fixedly connected to the output end of the motor. A first conical gear is fixedly connected to the end of the first rotating shaft far from the motor.

[0008] Preferably, the cleaning component further includes a second rotating shaft. A second conical gear is fixedly connected to the top of the second rotating shaft. The second conical gear is meshed with the first conical gear.

[0009] Preferably, two groups of the L-shaped rods are symmetrically and fixedly connected to both sides of the second rotating shaft. Scraper rubber strips are distributed on the inner sides of the L-shaped rods.

[0010] Preferably, the flushing component further includes a spray head. The spray head is fixedly connected to the top of the inner wall of the cleaning tank cavity in an annular and inclined manner. The spray head is communicated with the water tank.

[0011] Preferably, the flushing component further includes a delivery pipe. One end of the delivery pipe is communicated with the water tank. The other end of the delivery pipe is communicated with the inside of the cleaning tank cavity.

[0012] Preferably, the flushing component further includes a water pump. The water pump is fixedly installed on the outside of the delivery pipe.

[0013] Preferably, the bearing tray is fixedly connected to the inner circle of the internal support ring. Through holes are annularly and penetratingly formed in the whole body of the bearing tray.

[0014] Preferably, threaded grooves are distributed in the annular groove at the bottom of the internal support ring.

[0015] Preferably, filter holes are penetratingly formed in the whole body of the bottom of the filter basket. A threaded ring is fixedly connected to the upper part outside the filter holes. The filter basket is threadedly connected to the threaded groove through the threaded ring.

[0016] The beneficial effects of the present utility model are:

[0017] 1. In the utility model, a cleaning component is arranged above the bearing tray in the cleaning tank cavity. When the heat exchanger to be cleaned is placed on the top of the bearing tray, the heat exchanger placed on the top of the bearing tray is rinsed through the water tank and the spray head. Meanwhile, the motor can be started to drive the first rotating shaft and the first conical gear to rotate synchronously at the output end of the motor. At this time, the second conical gear engaged on one side of the first conical gear rotates synchronously and drives the second rotating shaft and the L-shaped rod to rotate. At this time, the L-shaped rod and the scraping rubber strip located outside the heat exchanger to be cleaned make a circular motion, thereby completing the cleaning work on the top surface and the side surface of the heat exchanger. Through this design, the problem of sanitary dead corners during the cleaning of the heat exchanger can be avoided, and thus the cleaning cleanliness can be greatly improved.

[0018] 2. A filter basket is arranged at the bottom of the built-in retaining ring in the utility model. The filter basket can filter the cleaning water after spraying. This design can filter and intercept the impurities remaining in the cleaning water after spraying, and make the filtered cleaning water recycled back to the water tank under the action of the delivery pipe and the water pump for circular spraying. In particular, this design does not adopt a threaded installation method for both the filter basket and the built-in retaining ring. Therefore, when a certain amount of intercepted impurities accumulates in the filter basket, the filter basket can be unscrewed from the bottom of the built-in retaining ring, and the opening and closing valve can be opened to take out the filter basket to complete its separate cleaning work. Through this design, the waste of cleaning water resources can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0020] Figure 1 It is a front structural schematic diagram of the overall device proposed by the present utility model;

[0021] Figure 2 It is a sectional structural schematic diagram of the inside of the cleaning tank of the present utility model;

[0022] Figure 3 It is a structural schematic diagram of the cleaning component of the present utility model;

[0023] Figure 4 It is a separated view of the structure of the built-in retaining ring and the filter basket of the present utility model;

[0024] In the figure: 1. Cleaning tank; 11. Opening and closing valve; 2. Flushing component; 21. Water tank; 22. Water inlet; 23. Delivery pipe; 24. Water pump; 25. Spray head; 3. Cleaning component; 31. Motor; 32. First rotating shaft; 33. First conical gear; 34. Second conical gear; 35. Second rotating shaft; 36. L-shaped rod; 361. Scraping rubber strip; 4. Filter component; 41. Built-in retaining ring; 411. Threaded groove; 42. Bearing tray; 421. Through groove; 43. Filter basket; 431. Filter hole; 432. Threaded ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0026] Please refer to Figure 1 and Figure 2 , the present utility model provides a technical solution: a cleaning device for a heat exchanger, including a cleaning tank 1, an opening and closing valve 11 provided on the side of the cleaning tank 1, a flushing assembly 2 is provided on the upper part of the cleaning tank 1, the flushing assembly 2 includes a water tank 21, a water inlet 22 is fixedly connected to the top of the water tank 21, the water tank 21 is fixedly connected to the top of the cleaning tank 1, a cleaning assembly 3 is provided on the top of the cleaning tank 1, the cleaning assembly 3 includes a motor 31 for driving rotation, the cleaning assembly 3 further includes an L-shaped rod 36, and the L-shaped rod 36 rotates and scrapes in the cavity of the cleaning tank 1 under the drive of the motor 31. A filtering assembly 4 is arranged in the cavity of the cleaning tank 1. The filtering assembly 4 includes an internal support ring 41, the internal support ring 41 is fixedly connected to the inner wall of the cavity of the cleaning tank 1, a supporting tray 42 for supporting the object to be cleaned is arranged on the top of the internal support ring 41, and a filter basket 43 which is convenient for disassembly and assembly is threadedly connected to the bottom of the internal support ring 41. Through this design, the problems in the prior art that when cleaning the heat exchanger with a long hair brush, it is easy to have sanitary dead corners that cannot be effectively cleaned and a large amount of waste of cleaning water resources are solved.

[0027] Please refer to Figure 3 , a first rotating shaft 32 is fixedly connected to the output end of the motor 31, a first bevel gear 33 is fixedly connected to the end of the first rotating shaft 32 far away from the motor 31, the cleaning assembly 3 further includes a second rotating shaft 35, a second bevel gear 34 is fixedly connected to the top of the second rotating shaft 35, the second bevel gear 34 is meshed with the first bevel gear 33, and two groups of L-shaped rods 36 are symmetrically fixedly connected to both sides of the second rotating shaft 35. Scraper rubber strips 361 are distributed on the inner sides of the L-shaped rods 36. Through this design, the L-shaped rods 36 and the scraper rubber strips 361 can be driven by the motor 31 to complete the work of gently brushing the heat exchanger in a surrounding manner.

[0028] Please refer to Figure 1 and Figure 2, the flushing assembly 2 further includes a spray head 25. The spray head 25 is fixedly connected obliquely in a ring shape to the top of the inner wall of the cleaning tank 1 cavity. The spray head 25 is communicated with the water tank 21. The flushing assembly 2 further includes a delivery pipe 23. One end of the delivery pipe 23 is communicated with the water tank 21, and the other end of the delivery pipe 23 is communicated with the inside of the cleaning tank 1 cavity. The flushing assembly 2 further includes a water pump 24. The water pump 24 is fixedly installed on the outer side of the delivery pipe 23. Through this design, the spraying and recycling of cleaning water can be completed.

[0029] Please refer to Figure 4 , the bearing tray 42 is fixedly connected to the inner ring of the built-in retaining ring 41. The bearing tray 42 is provided with through slots 421 throughout its circumference in a ring shape. Threaded grooves 411 are distributed in the annular groove at the bottom of the built-in retaining ring 41. Filter holes 431 are provided throughout the circumference at the bottom of the filter basket 43. A threaded ring 432 is fixedly connected to the upper part outside the filter holes 431. The filter basket 43 is threadedly connected to the threaded grooves 411 through the threaded ring 432. In this design, neither the filter basket 43 nor the built-in retaining ring 41 adopts a threaded installation method. Therefore, when a certain amount of intercepted impurities accumulate in the filter basket 43, the filter basket 43 can be unscrewed from the bottom of the built-in retaining ring 41, and the opening and closing valve 11 can be opened to take it out to complete its separate cleaning work. Through this design, the waste of cleaning water resources can be effectively reduced.

[0030] The working principle and usage process of the present utility model are as follows:

[0031] The staff first opens the opening and closing valve 11 and places the heat exchanger to be cleaned on the top of the bearing tray 42 inside the cleaning tank 1 cavity. Subsequently, the heat exchanger placed on the top of the bearing tray 42 is rinsed through the water tank 21 and the spray head 25. At the same time, the motor 31 can be started so that the output end of the motor 31 drives the first rotating shaft 32 and the first bevel gear 33 to rotate synchronously. At this time, the second bevel gear 34 engaged on one side of the first bevel gear 33 rotates synchronously and drives the second rotating shaft 35 and the L-shaped rod 36 to rotate. At this time, the L-shaped rod 36 and the scraping rubber strip 361 located outside the heat exchanger to be cleaned perform a circular motion, thereby completing the cleaning work on the top surface and side surface of the heat exchanger. Through this design, the problem of sanitary dead corners during the cleaning of the heat exchanger can be avoided, thereby greatly improving the cleaning cleanliness. And a filter basket 43 is provided at the bottom of the built-in retaining ring 41. The filter basket 43 can filter the cleaning water after spraying. This design can filter and intercept the impurities remaining in the cleaning water after spraying, and make the filtered cleaning water be recycled back to the water tank 21 under the action of the delivery pipe 23 and the water pump 24 for circular spraying. In particular, in this design, neither the filter basket 43 nor the built-in retaining ring 41 adopts a threaded installation method. Therefore, when a certain amount of intercepted impurities accumulate in the filter basket 43, the filter basket 43 can be unscrewed from the bottom of the built-in retaining ring 41, and the opening and closing valve 11 can be opened to take it out to complete its separate cleaning work. Through this design, the waste of cleaning water resources can be effectively reduced.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cleaning device for a heat exchanger, comprising a cleaning tank (1) and an on-off valve (11) arranged on the side of the cleaning tank (1), characterized in that: A flushing assembly (2) is arranged on the upper part of the cleaning tank (1), the flushing assembly (2) comprising a water tank (21), the top of the water tank (21) being fixedly connected to a water inlet (22), the water tank (21) being fixedly connected to the top of the cleaning tank (1), a cleaning assembly (3) being arranged on the top of the cleaning tank (1), the cleaning assembly (3) comprising a motor (31) for driving rotation, the cleaning assembly (3) also comprising an L-shaped rod (36), the L-shaped rod (36) being driven by the motor (31) to perform rotational scraping in the cavity of the cleaning tank (1), a filtering assembly (4) being arranged in the cavity of the cleaning tank (1), the filtering assembly (4) comprising an internal support ring (41), the internal support ring (41) being fixedly connected to the inner wall of the cavity of the cleaning tank (1), a supporting tray (42) for supporting an object to be cleaned being arranged on the top of the internal support ring (41), and a filter basket (43) which can be easily disassembled and assembled being threadedly connected to the bottom of the internal support ring (41).

2. A heat exchanger cleaning device according to claim 1, characterized in that: The output end of the motor (31) is fixedly connected to a first rotating shaft (32), and the first rotating shaft (32) is fixedly connected to a first conical tooth (33) at an end away from the motor (31).

3. The cleaning device for a heat exchanger according to claim 1, characterized in that: The cleaning assembly (3) further comprises a second rotating shaft (35), the top of which is fixedly connected with a second conical tooth (34), and the second conical tooth (34) is meshingly connected with the first conical tooth (33).

4. The cleaning device for a heat exchanger according to claim 1, characterized in that: The two groups of L-shaped rods (36) are symmetrically fixedly connected to the two sides of the second rotating shaft (35), and a cleaning rubber strip (361) is distributed inside the L-shaped rods (36).

5. The cleaning device for a heat exchanger according to claim 1, characterized in that: The flushing assembly (2) further comprises a spray head (25), which is annular and obliquely fixedly connected to the top of the inner wall of the cleaning tank (1), and the spray head (25) is connected to the water tank (21).

6. The cleaning device for a heat exchanger according to claim 1, characterized in that: The flushing assembly (2) further comprises a delivery pipe (23), one end of which is connected to the water tank (21), and the other end of which is connected to the cavity of the cleaning tank (1).

7. A heat exchanger cleaning device according to claim 1, characterized in that: The flushing assembly (2) further comprises a water pump (24), wherein the water pump (24) is fixedly mounted on the outside of the delivery pipe (23).

8. The cleaning device for a heat exchanger according to claim 1, characterized in that: The receiving tray (42) is fixedly connected to the inner ring of the built-in supporting ring (41), and a through groove (421) is formed in an annular shape and runs through the entire body of the receiving tray (42).

9. The cleaning device for a heat exchanger according to claim 1, characterized in that: Thread grooves (411) are distributed in the annular groove at the bottom of the built-in support ring (41).

10. The cleaning device for a heat exchanger according to claim 1, characterized in that: The bottom of the filter basket (43) is provided with filter holes (431) running through it, and the upper part of the outer side of the filter hole (431) is fixedly connected with a thread ring (432), and the filter basket (43) is threadedly connected to the thread groove (411) through the thread ring (432).

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