Automatic cleaning device for tubular heat exchanger

Abstract

The utility model relates to an automatic cleaning device for a tube type heat exchanger, relates to the technical field of tube type heat exchanger cleaning, and aims to solve the problem that the labor intensity is high when a high-pressure water gun is manually operated for cleaning, the automatic cleaning device comprises a trolley, a liquid storage tank used for storing chemicals is arranged on the trolley, and a conveying pump is arranged at the top of the liquid storage tank; a suction pipe is arranged at the water inlet end of the conveying pump, the end, away from the conveying pump, of the suction pipe is communicated with the interior of the liquid storage tank, a flushing nozzle is arranged at the water outlet end of the conveying pump, and a transverse moving mechanism and a lifting mechanism which are used for controlling the flushing nozzle to move transversely and longitudinally are arranged on the trolley. The cleaning device has the advantages that the cleaning automation degree is improved, operation is easy and convenient, manual operation complexity and labor intensity are reduced, the cleaning efficiency is high, and the cleaning time can be remarkably shortened.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cleaning of a shell-and-tube heat exchanger, and particularly relates to an automatic cleaning device for a shell-and-tube heat exchanger. BACKGROUND

[0002] As an indispensable device in the chemical industry, the shell-and-tube heat exchanger plays an important role in various process flows due to its high heat exchange capacity. The heat exchanger realizes heat transfer through densely arranged heat exchange tubes inside a shell, and a tube sheet, a head and a baffle plate and the like components jointly constitute a stable structure frame. In actual operation, due to various minerals and impurities contained in the medium, a layer of scale that is difficult to remove is gradually deposited on the inner wall of the heat exchange tube after long-term circulation. The scale not only reduces the heat exchange efficiency and increases the energy consumption, but also causes pipe blockage and affects the continuous and stable operation of the production line in a serious case.

[0003] In the prior art, the traditional cleaning method mainly relies on manual operation of a high-pressure water gun for flushing. The high-pressure water gun brings a great impact to the hand of a person during flushing, and long-time use is very laborious. Moreover, the high-pressure water flow is easy to splash on the body of the person. Therefore, in view of the above status, it is urgent to develop an automatic cleaning device for a shell-and-tube heat exchanger which is convenient to operate, can clean and remove scale of the shell-and-tube heat exchanger and save labor, so as to overcome the deficiencies in the current actual application and meet the current demand. CONTENT OF THE INVENTION

[0004] In order to solve the problem of high labor intensity of manual operation of a high-pressure water gun for cleaning, the application provides an automatic cleaning device for a shell-and-tube heat exchanger.

[0005] The application provides an automatic cleaning device for a shell-and-tube heat exchanger which adopts the following technical scheme:

[0006] The automatic cleaning device for the shell-and-tube heat exchanger comprises a trolley, a liquid storage tank for storing a medicament is arranged on the trolley, a delivery pump is arranged on the top of the liquid storage tank, a suction pipe is arranged at the water inlet end of the delivery pump, the end of the suction pipe away from the delivery pump is communicated to the inside of the liquid storage tank, a flushing nozzle is arranged at the water outlet end of the delivery pump, and a transverse moving mechanism and a lifting mechanism for controlling the transverse and vertical movement of the flushing nozzle are arranged on the trolley.

[0007] The traditional cleaning method mainly relies on manual operation of a high-pressure water gun for flushing. The high-pressure water gun brings a great impact to the hand of a person during flushing, and long-time use is very laborious. Moreover, the high-pressure water flow is easy to splash on the body of the person. Through the above technical scheme, the liquid storage tank is installed on the trolley, the medicament in the liquid storage tank is sucked out and delivered to the flushing nozzle through the suction pipe, and the transverse moving mechanism and the lifting mechanism are installed on the trolley.

[0008] When the column tube heat exchanger is cleaned, first, the trolley is pushed to the column tube heat exchanger, and then the flushing nozzle is inserted into the pipe to be cleaned. This step is usually achieved by manually pushing the trolley back and forth so that the flushing nozzle can accurately enter and be fixed inside the pipe. The delivery pump is started, which draws the acid agent from the liquid storage tank through the suction pipe. The acid agent is delivered to the flushing nozzle and is delivered to the inside of the pipe through the flushing nozzle. The acid agent reacts with the scale to effectively eliminate the scale. After cleaning one pipe, the flushing nozzle is removed from the pipe by the trolley, and the flushing nozzle is adjusted in the longitudinal position by the lifting mechanism, and the flushing nozzle is finally adjusted in the transverse position by the transverse movement mechanism, so that the flushing nozzle is accurately aimed at the next pipe to be cleaned. Repeat the above steps to insert the flushing nozzle into the next pipe and deliver the agent and clean again. By continuously adjusting the position of the flushing nozzle, multiple pipes can be continuously cleaned.

[0009] Through the setting of the liquid storage tank, the delivery pump, the flushing nozzle, the transverse movement mechanism and the lifting mechanism, the flushing nozzle can be accurately controlled, the degree of automation of cleaning is improved, the operation is simple, the tediousness and labor intensity of manual operation are reduced, the cleaning efficiency is high, the cleaning time can be significantly shortened, and the flexibility is good. It can adapt to the cleaning needs of pipes at different positions and angles, and is widely used in the cleaning work of various column tube heat exchangers.

[0010] Optionally, a hose for connection is arranged between the water outlet of the delivery pump and the flushing nozzle, and the two ends of the hose are respectively communicated to the delivery pump and the flushing nozzle.

[0011] By adopting the above technical scheme, the delivery pump is communicated with the flushing nozzle through the hose. Through the setting of the hose, the design of the hose enables the flushing nozzle to move freely in a larger range without being limited by the fixed pipe, thereby increasing the flexibility of the cleaning device and facilitating installation and maintenance. The connection of the hose is relatively simple and does not require complex fixing and sealing measures.

[0012] Optionally, the lifting mechanism comprises a vertical plate, an electric telescopic rod, a support frame, a sliding rail and a sliding block. The vertical plate is vertically arranged on the trolley. The sliding rail is connected to the vertical plate and is arranged along the height direction of the vertical plate. The sliding block is slidingly connected to the sliding rail. The support frame is connected to the sliding block. The telescopic end of the electric telescopic rod is connected to the bottom of the support frame. The transverse movement mechanism is arranged on the support frame. The flushing nozzle is connected to the transverse movement mechanism.

[0013] By adopting the technical scheme, the lifting mechanism comprises a vertical plate, an electric telescopic rod, a support frame, a sliding rail and a sliding block; when the longitudinal position of the flushing nozzle is adjusted, the electric telescopic rod is started, and with the extension and retraction of the electric telescopic rod, the support frame slides up and down on the sliding rail through the sliding block, drives the support frame, the horizontal movement mechanism and the flushing nozzle to move longitudinally until the flushing nozzle moves to a suitable position; through the arrangement of the lifting mechanism, the design of the lifting mechanism enables the flushing nozzle to be adjusted at different heights, adapts to the cleaning requirements of different column-tube heat exchangers, improves the cleaning accuracy, and at the same time, the operator can complete the longitudinal position adjustment of the flushing nozzle without complex operation, reduces the operation difficulty and improves the work efficiency.

[0014] Optionally, the horizontal movement mechanism comprises a driving motor, a lead screw and a threaded sleeve, the driving motor and the lead screw are arranged on the support frame, the lead screw is rotationally connected to the support frame, the output end of the driving motor is connected to the end of the lead screw, the threaded sleeve is threadedly connected to the lead screw, and the threaded sleeve is slidably connected to the support frame, and the flushing nozzle is connected to the threaded sleeve.

[0015] By adopting the technical scheme, the horizontal movement mechanism comprises a driving motor, a lead screw and a threaded sleeve; when the horizontal position of the flushing nozzle is adjusted, the driving motor is started, the output end of the driving motor starts to rotate, drives the lead screw connected thereto to rotate, and with the rotation of the lead screw, the threaded sleeve can move horizontally along the support frame due to the sliding connection between the threaded sleeve and the support frame, thereby driving the flushing nozzle connected thereto to adjust the horizontal position; through the arrangement of the horizontal movement mechanism, the design of the horizontal movement mechanism enables the flushing nozzle to be adjusted at different horizontal positions, adapts to the cleaning requirements of different column-tube heat exchangers, has high automation degree, reduces the need for manual intervention, and improves the automation degree of the cleaning process.

[0016] Optionally, the horizontal movement mechanism further comprises a limiting rod, the limiting rod is connected to the bottom of the threaded sleeve, and a limiting sliding groove is formed in the support frame, and the limiting rod is slidably connected in the limiting sliding groove.

[0017] By adopting the technical scheme, the horizontal movement mechanism further comprises a limiting rod, and the limiting rod is slidably connected in the limiting sliding groove; through the arrangement of the limiting rod and the limiting sliding groove, the accuracy and stability of the flushing nozzle during the horizontal movement are ensured, and the possibility of inaccurate cleaning or equipment damage of the flushing nozzle due to excessive movement or deviation from the predetermined path is effectively reduced.

[0018] Optionally, a mobile power supply for supplying power to the pump, the electric telescopic rod and the driving motor is arranged on the trolley.

[0019] By adopting the technical scheme, the mobile power supply is installed on the trolley; through the setting of the mobile power supply, the whole cleaning device is more portable, and an operator can easily push the trolley to different work sites to perform cleaning work on the tube-type heat exchanger, without relying on fixed power sockets, thereby improving the flexibility of the cleaning work.

[0020] Optionally, a port for supplementing the medicament is arranged at the top of the liquid storage tank, and a end cover is detachably arranged on the port.

[0021] By adopting the technical scheme, the port is formed on the liquid storage tank, and the end cover is installed on the port; through the setting of the end cover, the medicament required for cleaning can be conveniently supplemented, the situation that the work is interrupted due to insufficient medicament in the cleaning process is reduced, the work efficiency is improved, dust, dirt or other impurities are prevented from entering the inside of the liquid storage tank, the cleanliness of the liquid storage tank is helped to be maintained, and the quality of the cleaning medicament is ensured.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] Through the setting of the liquid storage tank, the delivery pump, the flushing nozzle, the horizontal moving mechanism and the lifting mechanism, the flushing nozzle can be accurately controlled, the automation degree of cleaning is improved, the operation is simple, the tediousness and labor intensity of manual operation are reduced, the cleaning efficiency is high, the cleaning time can be significantly shortened, the flexibility is good, the cleaning demand of the pipeline at different positions and angles can be adapted, and the present application is widely applied to cleaning work of various tube-type heat exchangers;

[0024] Through the setting of the hose, the design of the hose enables the flushing nozzle to freely move in a larger range and is not limited by fixed pipelines, the flexibility of the cleaning device is increased, and the hose is relatively simple to connect, without complex fixing and sealing measures;

[0025] The mobile power supply is installed on the trolley; through the setting of the mobile power supply, the whole cleaning device is more portable, and an operator can easily push the trolley to different work sites to perform cleaning work on the tube-type heat exchanger, without relying on fixed power sockets, thereby improving the flexibility of the cleaning work. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of an automatic cleaning device for a tube-type heat exchanger in an embodiment of the present application.

[0027] Figure 2 is a partial enlarged view of the lifting mechanism and the horizontal moving mechanism in an embodiment of the present application.

[0028] Explanation of reference signs: 1, trolley; 2, liquid storage tank; 201, end cover; 3, delivery pump; 301, suction pipe; 4, hose; 5, flushing nozzle; 6, lifting mechanism; 601, vertical plate; 602, electric telescopic rod; 603, support frame; 6031, limiting sliding groove; 604, sliding rail; 605, sliding block; 7, transverse moving mechanism; 701, driving motor; 702, lead screw; 703, threaded sleeve; 704, limiting rod; 8, mobile power supply. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying drawings Figures 1-2 The application is further described in detail.

[0030] The embodiment of the application discloses a tubular heat exchanger automatic cleaning device. Figure 1 The tubular heat exchanger automatic cleaning device comprises a trolley 1, and the trolley 1 is equipped with a handle convenient for operation and a flexible pulley system in the embodiment, so that an operator can easily push and control the whole cleaning device.

[0031] Referring to Figure 1 The trolley 1 is provided with a liquid storage tank 2, and the liquid storage tank 2 stores acid reagent in the embodiment, the acid reagent reacts with scale to effectively eliminate the scale, a port is formed at the top of the liquid storage tank 2, the port can be used for supplementing the reagent, and the end cover 201 is detachably installed on the port.

[0032] Referring to Figure 1 The liquid storage tank 2 is provided with a delivery pump 3 at the top, the water inlet end of the delivery pump 3 is provided with a suction pipe 301, the suction pipe 301 is communicated to the inside of the liquid storage tank 2, and the water outlet end of the delivery pump 3 is provided with a hose 4, one end of the hose 4 away from the delivery pump 3 is communicated with a flushing nozzle 5, and the flushing nozzle 5 is inserted into a pipeline to be cleaned.

[0033] Referring to Figure 1 and Figure 2The trolley 1 is also provided with a horizontal moving mechanism 7 and a lifting mechanism 6, and the horizontal moving mechanism 7 and the lifting mechanism 6 are used for adjusting the horizontal and vertical positions of the flushing nozzle in the embodiment; the lifting mechanism 6 comprises a vertical plate 601, an electric telescopic rod 602, a support frame 603, a sliding rail 604 and a sliding block 605, the vertical plate 601 is vertically arranged on the trolley 1, the sliding rail 604 is connected to one side of the vertical plate 601, the sliding rail 604 is arranged along the height direction of the vertical plate 601, the sliding block 605 is slidably connected to the sliding rail 604, and the support frame 603 is connected to the surface of the sliding block 605, and the electric telescopic rod 602 is located at the bottom of the vertical plate 601, and the telescopic end of the electric telescopic rod 602 is hingedly arranged at the bottom of the support frame 603.

[0034] With reference to Figure 1 And Figure 2 The horizontal moving mechanism 7 is arranged on the support frame 603, and the horizontal moving mechanism 7 comprises a driving motor 701, a lead screw 702, a threaded sleeve 703 and a limiting rod 704, the driving motor 701 and the lead screw 702 are arranged on the support frame 603, both ends of the lead screw 702 are rotatably arranged on the support frame 603 through bearings, the arrangement direction of the lead screw 702 is perpendicular to the arrangement direction of the sliding rail 604, and the output end of the driving motor 701 is connected to the end of the lead screw 702; in the embodiment, the driving motor 701 can realize forward and reverse rotation.

[0035] With reference to Figure 1 And Figure 2 The threaded sleeve 703 is threadedly connected to the lead screw 702, the flushing nozzle 5 is fixedly arranged on the threaded sleeve 703, and the limiting rod 704 is fixedly arranged at the bottom of the threaded sleeve 703; the support frame 603 is provided with a limiting sliding groove 6031, the limiting sliding groove 6031 is arranged along the length direction of the lead screw 702, and the limiting rod 704 is slidably connected to the limiting sliding groove 6031; the limiting rod 704 ensures the accuracy and stability of the flushing nozzle 5 during the horizontal movement, and effectively reduces the possibility of inaccurate cleaning or equipment damage caused by excessive movement or deviation of the flushing nozzle 5 from the predetermined path.

[0036] With reference to Figure 1 The trolley 1 is provided with a mobile power supply 8, and the mobile power supply 8 is used for supplying power to the conveying pump 3, the electric telescopic rod 602 and the driving motor 701 in the embodiment, and the conveying pump 3, the electric telescopic rod 602 and the driving motor 701 are electrically connected to the mobile power supply 8 through wires; so that the whole cleaning device is more portable, and the operator can easily push the trolley 1 to different working positions to perform the cleaning work of the tube-type heat exchanger, without relying on fixed power sockets, and the flexibility of the cleaning work is improved.

[0037] The implementation principle of the automatic cleaning device for the tube heat exchanger is as follows: when the tube heat exchanger is cleaned, first, the trolley 1 is pushed to the tube heat exchanger, and then the flushing nozzle 5 is inserted into the pipeline to be cleaned, which is usually achieved by manually pushing the trolley 1 back and forth to accurately enter and fix the flushing nozzle 5 in the pipeline, the delivery pump 3 is started, the pump draws the acid agent from the liquid storage tank 2 through the suction pipe 301, the acid agent is delivered into the flushing nozzle 5 through the hose 4, and the acid agent is delivered into the pipeline through the flushing nozzle 5, and the acid agent reacts with the scale to effectively eliminate the scale;

[0038] After the cleaning of one pipeline is completed, the flushing nozzle 5 is removed from the pipeline by using the trolley 1, the electric telescopic rod 602 is started, and the support frame 603 slides up and down on the slide rail 604 through the sliding block 605, driving the longitudinal movement of the support frame 603, the horizontal movement mechanism 7 and the flushing nozzle 5 on the support frame 603, and the driving motor 701 is started, the output end of the driving motor 701 starts to rotate, driving the screw rod 702 connected thereto to rotate, and as the screw rod 702 rotates, the threaded sleeve 703 can move horizontally along the support frame 603 because of the sliding connection between the threaded sleeve 703 and the support frame 603, driving the horizontal position adjustment of the flushing nozzle 5 connected thereto, so as to accurately aim the flushing nozzle 5 at the next pipeline to be cleaned, and the above steps are repeated to insert the flushing nozzle 5 into the next pipeline and deliver the agent and clean again, and by continuously adjusting the position of the flushing nozzle 5, multiple pipelines can be continuously cleaned;

[0039] By arranging the liquid storage tank 2, the delivery pump 3, the flushing nozzle 5, the horizontal movement mechanism 7 and the lifting mechanism 6, the flushing nozzle 5 can be accurately controlled, the degree of automation of cleaning is improved, the operation is simple, the tediousness and labor intensity of manual operation are reduced, the cleaning efficiency is high, the cleaning time can be significantly shortened, the flexibility is good, the pipeline cleaning requirements of different positions and angles can be met, and the device is widely applied to the cleaning work of various tube heat exchangers.

[0040] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A device for automatic cleaning of a shell-and-tube heat exchanger, characterized in that: The utility model provides a kind of medicine cart, including small trolley (1), be provided with liquid storage tank (2) for storing medicament on the small trolley (1), the top of the liquid storage tank (2) is provided with delivery pump (3), the water inlet end of the delivery pump (3) is provided with suction pipe (301), the end of the suction pipe (301) away from delivery pump (3) is communicated to the inside of liquid storage tank (2), the water outlet end of the delivery pump (3) is provided with flush nozzle (5), the small trolley (1) is provided with horizontal moving mechanism (7) and lifting mechanism (6) for controlling the transverse and longitudinal movement of flush nozzle (5).

2. The automatic cleaning device for the heat exchanger according to claim 1, characterized in that: The water outlet end of the delivery pump (3) is provided with a hose (4) for connection between the flush nozzle (5), and the two ends of the hose (4) are respectively communicated to the delivery pump (3) and the flush nozzle (5).

3. The device according to claim 1, characterized in that: The lifting mechanism (6) includes a vertical plate (601), an electric telescopic rod (602), a support frame (603), a sliding rail (604), and a sliding block (605). The vertical plate (601) is vertically arranged on the small trolley (1). The sliding rail (604) is connected to the vertical plate (601). The sliding rail (604) is arranged along the height direction of the vertical plate (601). The sliding block (605) is slidingly connected to the sliding rail (604). The support frame (603) is connected to the sliding block (605). The telescopic end of the electric telescopic rod (602) is connected to the bottom of the support frame (603). The horizontal moving mechanism (7) is arranged on the support frame (603). The flush nozzle (5) is connected to the horizontal moving mechanism (7).

4. A device for automatic cleaning of a tubular heat exchanger according to claim 3, characterized in that: The horizontal moving mechanism (7) includes a drive motor (701), a lead screw (702), and a threaded sleeve (703). The drive motor (701) and the lead screw (702) are arranged on the support frame (603). The lead screw (702) is rotationally connected to the support frame (603). The output end of the drive motor (701) is connected to the end of the lead screw (702). The threaded sleeve (703) is threadedly connected to the lead screw (702). The threaded sleeve (703) is slidingly connected to the support frame (603). The flush nozzle (5) is connected to the threaded sleeve (703).

5. A device for automatic cleaning of a tubular heat exchanger according to claim 4, characterized in that: The horizontal moving mechanism (7) further includes a limiting rod (704) connected to the bottom of the threaded sleeve (703). A limiting sliding groove (6031) is formed in the support frame (603). The limiting rod (704) is slidingly connected in the limiting sliding groove (6031).

6. A device for automatic cleaning of a tubular heat exchanger according to claim 4, characterized in that: The small trolley (1) is provided with a mobile power supply (8) for powering the delivery pump (3), the electric telescopic rod (602), and the drive motor (701).

7. The device according to claim 1, characterized in that: The top of the liquid storage tank (2) is provided with a port for replenishing medicament. A cap (201) is detachably arranged on the port.

Images