Modularized energy-saving shell and tube cooler capable of recovering heat

Abstract

The invention belongs to the technical field of coolers, and particularly relates to a modular heat-recoverable energy-saving tubular cooler which comprises a shell, and two tube plates are fixedly connected to the inner wall of the shell. In the working process of the tubular cooler, waste heat can be recycled, so that the energy utilization efficiency of the whole production system is improved, the energy consumption and the production cost are reduced, all parts of the tubular cooler are modularly designed, subsequent installation and maintenance are facilitated, and the production efficiency is improved. When it is detected that an internal pipeline of the tubular cooler is blocked due to scale, a chemical washing agent can be automatically conveyed into the pipeline for cleaning, in the cleaning process, the cleaning effect of the pipeline is guaranteed, meanwhile, a proper amount of chemical washing agent is conveyed according to the scale adhering degree in the pipeline, and the cleaning efficiency is improved. While the incrustation is ensured to be fully dissolved, the waste of the chemical washing agent is avoided, and the energy-saving property of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coolers, and in particular relates to a modular, heat-recoverable, energy-saving shell-and-tube cooler. Background Art

[0002] A shell-and-tube cooler is a common heat exchange device widely used in many industrial fields such as chemical industry, petroleum, electric power, and metallurgy. For example, a shell-and-tube double cooler is proposed in patent publication number CN105115325B.

[0003] During the operation of existing shell-and-tube coolers, the cooling water contains calcium, magnesium and other ions. As the water temperature rises or the water evaporates, the solubility of these salts changes, and they will precipitate from the water and form scale. When scale adheres to the inner wall of the pipe, it will greatly hinder heat transfer, resulting in a significant decrease in cooling effect. Moreover, as scale continues to accumulate, the inner diameter of the pipe gradually decreases, and in severe cases, it can even completely block the pipe. Therefore, when the cooling effect of the cooler is detected to be reduced, the scale in the pipe needs to be cleaned. Traditional cleaning methods generally use chemical detergents to clean the pipes. However, when using chemical detergents to clean the internal pipes of a shell-and-tube cooler, due to the large number of pipes inside the cooler, the flow rate in a single pipe tends to slow down after the chemical detergent is diverted. This not only makes it difficult to completely remove the scale in the pipes, affecting the cooling performance of the cooler, but also prolongs the cleaning time, increases labor costs and equipment downtime. In addition, since the specific content of scale in the pipes cannot be known in advance, when delivering chemical detergents, it is easy to use too much chemical detergent, resulting in waste, or too little chemical detergent, resulting in incomplete scale cleaning.

[0004] Therefore, a modular energy-saving shell-and-tube cooler with heat recovery is proposed to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a modular energy-saving shell-and-tube cooler with heat recovery in order to solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: a modular energy-saving shell-and-tube cooler with heat recovery, comprising a shell, wherein the inner wall of the shell is fixedly connected to two tube sheets, a plurality of cooling pipes are fixedly plugged between the two tube sheets, a plurality of baffles are fixedly connected to the upper and lower inner walls of the shell, and a plurality of cooling pipes pass through the plurality of baffles, the left and right sides of the shell are connected to a head, the side wall of the head is fixedly connected to a delivery pipe, a control valve is provided in each of the two delivery pipes, the lower side wall of the shell is fixedly connected to a liquid inlet pipe and a liquid outlet pipe, the shell, tube sheets, cooling pipes, heads, delivery pipes, liquid inlet pipes and liquid outlet pipes are all modularly designed, the front side wall of the shell is connected to a controller, and further comprising: A heat recovery component is provided at the right end of the right delivery pipe for heat recovery and reuse; A pumping assembly, disposed on the upper side wall of the housing, for delivering the chemical detergent; Two plug assemblies are arranged on the upper side wall of the shell and located on both sides of the pumping assembly, so that multiple delivery pipes can be cleaned one by one.

[0007] Preferably, the heat recovery component includes a recovery box, which is fixedly connected to the right end of the right delivery pipe, and the right side wall of the recovery box is fixedly connected to a discharge pipe. A spiral tube is placed in the recovery box, and both ends of the spiral tube extend out of the recovery box.

[0008] Preferably, the pumping assembly includes a storage box fixedly connected to the upper side wall of the shell, the inner wall of the storage box is fixedly connected to a partition frame, the upper side wall of the shell is fixedly connected to two hollow plates, a plurality of connecting pipes are fixedly connected between the two hollow plates and the storage box, a magnetic control valve is provided in the connecting pipe, the upper side wall of the shell is fixedly connected to a pump, the liquid inlet end of the pump is connected to the left hollow plate, the liquid outlet end of the pump is fixedly connected to a first hose, and the right side wall of the hollow plate on the right is fixedly connected to a second hose.

[0009] Preferably, the plug assembly includes a mounting cover, the mounting cover is connected to the upper side wall of the shell, the side wall of the mounting cover away from the pumping assembly is connected to a screw linear module, the movable end of the screw linear module is fixedly connected to a bending rod, sliding openings are provided on the left and right sides of the mounting cover, the lower end of the bending rod passes through the mounting cover and is connected to a lifting frame, a storage cavity is provided inside the lifting frame, the ends of the first hose and the second hose away from each other are connected to the storage cavity, the inner wall of the lifting frame is fixedly connected to a movable plate through an electric push rod, a plurality of telescopic tubes are fixedly connected between the movable plate and the storage cavity, the end of the telescopic tube away from the storage cavity passes through the movable plate and is fixedly connected to an insertion head that matches the cooling pipe, and a regulating valve is provided in the insertion head.

[0010] Preferably, the upper side wall of the shell is fixedly connected to a bracket, the upper side wall of the bracket is fixedly connected to a waste liquid tank, the waste liquid tank and the second hose are fixedly connected by a same recovery pipe, a recovery valve is provided in the recovery pipe, a blocking valve is provided in the second hose, the lower side wall of the bracket is fixedly connected to a pH detector, and the detection end of the pH detector is located in the second hose.

[0011] Preferably, a sealing plate is fixedly connected to the lower side wall of the lifting frame, a sealing strip is fixedly connected to the upper side wall of the sealing plate, and a sealing groove matching the sealing strip is formed on the lower inner wall of the shell.

[0012] Preferably, a high-pressure air pump is fixedly connected to the upper side wall of the shell, the air outlet end of the high-pressure air pump is fixedly connected to the first hose, the air outlet end of the high-pressure air pump is provided with a switch valve, the first hose is provided with an on-off valve, the first hose is provided with a pressure sensor, and the pressure sensor and the controller are electrically connected.

[0013] Preferably, the front side wall of the shell is connected to a display panel, and a surface of the display panel is connected to a plurality of position lamp beads.

[0014] Compared with existing technologies, the advantages of a modular energy-saving shell-and-tube cooler with heat recovery are: By setting up a heat recovery component, the waste heat can be recovered and reused during the operation of the shell and tube cooler, thereby improving the energy utilization efficiency of the entire production system, reducing energy consumption and production costs, and reducing the emission of waste heat into the environment, reducing the degree of thermal pollution, which is beneficial to environmental protection. In addition, all components of the shell and tube cooler are modularly designed to facilitate subsequent installation and maintenance.

[0015] Through the provided pumping assembly and plug assembly, when it is detected that the internal pipes of the shell and tube cooler are blocked due to scale, chemical detergents can be automatically transported into the pipes for cleaning. In the cleaning process, multiple pipes are cleaned one by one to ensure the cleaning effect of the pipes. At the same time, an appropriate amount of chemical detergent is transported according to the degree of scale attached to the pipes. While ensuring that the scale is fully dissolved, the waste of chemical detergent is avoided, thereby improving the energy saving of the device.

[0016] Through the set high-pressure air pump, switch valve, on-off valve, pressure sensor, display panel, and position light beads, when the internal pipes of the shell and tube cooler are found to be damaged, the specific pipe that is damaged can be detected among the many pipes, which facilitates the operator to carry out subsequent repairs and shortens the time for the operator to find the damaged pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a modular, heat-recoverable, energy-saving tube-and-tube cooler provided by the present invention; Figure 2 This is a schematic diagram of the positional relationship between the shell and the heat recovery component in a modular energy-saving shell-and-tube cooler with heat recovery provided by the present invention; Figure 3 This is a schematic diagram of the positional relationship between the high-pressure air pump and the pump unit in a modular energy-saving shell-and-tube cooler with heat recovery provided by the present invention; Figure 4 This is a schematic diagram of the internal structure of a lifting frame in a modular, heat-recoverable, energy-saving shell-and-tube cooler provided by the present invention; Figure 5 This is a schematic structural diagram of a tube plate in a modular, heat-recoverable, energy-saving tube-in-tube cooler provided by the present invention; Figure 6 This is a schematic diagram of the positional relationship between the sealing plate and the sealing strip in a modular, heat-recoverable, energy-saving shell-and-tube cooler provided by the present invention; Figure 7 This is a schematic diagram of the surface structure of a bracket in a modular, heat-recoverable, energy-saving tube-in-tube cooler provided by the present invention; Figure 8 The present invention provides a schematic structural diagram of a pumping assembly in a modular, heat-recoverable, energy-saving shell-and-tube cooler.

[0018] In the figure: 1 shell, 2 tube sheet, 3 cooling tube, 4 baffle, 5 head, 6 delivery pipe, 7 control valve, 8 liquid inlet pipe, 9 liquid outlet pipe, 10 controller, 11 heat recovery assembly, 111 recovery box, 112 discharge pipe, 12 spiral tube, 13 pumping assembly, 131 storage box, 132 partition frame, 14 hollow plate, 15 connecting pipe, 16 magnetic control valve, 17 pump, 18 first hose, 19 second hose, 20 plug assembly, 201 Mounting cover, 202 screw linear module, 21 bending rod, 22 lifting frame, 23 storage chamber, 24 moving plate, 25 telescopic tube, 26 insertion head, 27 regulating valve, 28 bracket, 29 waste liquid tank, 30 recovery pipe, 31 recovery valve, 32 blocking valve, 33 pH detector, 34 sealing plate, 35 sealing strip, 36 high-pressure air pump, 37 switching valve, 38 on-off valve, 39 pressure sensor, 40 display board, 41 position lamp beads, 42 electric push rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-8As shown, a modular energy-saving shell-and-tube cooler with heat recovery includes a shell 1, the inner wall of the shell 1 is fixedly connected to two tube sheets 2, a plurality of cooling tubes 3 are fixedly inserted between the two tube sheets 2, the upper and lower inner walls of the shell 1 are fixedly connected to a plurality of baffles 4, the plurality of cooling tubes 3 all pass through the plurality of baffles 4, the left and right sides of the shell 1 are connected to a head 5, the side wall of the head 5 is fixedly connected to a delivery pipe 6, the two delivery pipes 6 are each provided with a control valve 7, the lower side wall of the shell 1 is fixedly connected to a liquid inlet pipe 8 and a liquid outlet pipe 9, the shell 1, the tube sheet 2, the cooling tube 3, the head 5, the delivery pipe 6, the liquid inlet pipe 8 and the liquid outlet pipe 9 are all modularly designed, the front side wall of the shell 1 is connected to a controller 10, the front side wall of the shell 1 is connected to a display panel 40, the surface of the display panel 40 is connected to a plurality of position lamp beads 41, which can indicate the position of the damaged cooling tube 3, and also includes: A heat recovery assembly 11 is provided at the right end of the right delivery pipe 6 for heat recovery and reuse. The heat recovery assembly 11 includes a recovery box 111, which is fixedly connected to the right end of the right delivery pipe 6. A discharge pipe 112 is fixedly connected to the right side wall of the recovery box 111. A spiral tube 12 is placed in the recovery box 111, and both ends of the spiral tube 12 extend out of the recovery box 111. A pumping assembly 13 is provided on the upper side wall of the housing 1 and is used for conveying chemical detergent. The pumping assembly 13 includes a storage box 131 fixedly connected to the upper side wall of the housing 1. A partition frame 132 is fixedly connected to the inner wall of the storage box 131. Two hollow plates 14 are fixedly connected to the upper side wall of the housing 1. A plurality of connecting pipes 15 are fixedly connected between the two hollow plates 14 and the storage box 131. A magnetic control valve 16 is provided in the connecting pipe 15. A pump 17 is fixedly connected to the upper side wall of the housing 1. The liquid inlet end of the pump 17 is connected to the left hollow plate 14. The liquid outlet end of the pump 17 is fixedly connected to a first hose 18. A second hose 19 is fixedly connected to the right side wall of the right hollow plate 14, which can convey the chemical detergent to the cooling pipe 3 in batches. Two plug assemblies 20 are arranged on the upper side wall of the housing 1 and on both sides of the pumping assembly 13, so that multiple delivery pipes 6 can be cleaned one by one. The plug assembly 20 includes a mounting cover 201, which is connected to the upper side wall of the housing 1. The side wall of the mounting cover 201 away from the pumping assembly 13 is connected to a screw linear module 202. The movable end of the screw linear module 202 is fixedly connected to a bending rod 21. Sliding openings are provided on both sides of the mounting cover 201. The lower end of the bending rod 21 passes through the mounting cover 201 and is connected to a lifting mechanism. Frame 22, a storage chamber 23 is opened inside the lifting frame 22, and the ends of the first hose 18 and the second hose 19 away from each other are connected to the storage chamber 23. The inner wall of the lifting frame 22 is fixedly connected to the movable plate 24 through the electric push rod 42, and a plurality of telescopic tubes 25 are fixedly connected between the movable plate 24 and the storage chamber 23. The end of the telescopic tube 25 away from the storage chamber 23 passes through the movable plate 24 and is fixedly connected to an insertion head 26 that matches the cooling pipe 3. A regulating valve 27 is provided in the insertion head 26, which can clean the cooling pipe 3 in sequence.

[0021] A bracket 28 is fixedly connected to the upper side wall of the shell 1, and a waste liquid tank 29 is fixedly connected to the upper side wall of the bracket 28. The waste liquid tank 29 and the second hose 19 are fixedly connected by a same recovery pipe 30. A recovery valve 31 is provided in the recovery pipe 30, and a blocking valve 32 is provided in the second hose 19. A pH detector 33 is fixedly connected to the lower side wall of the bracket 28. The detection end of the pH detector 33 is located in the second hose 19, which can recycle the discarded chemical detergent.

[0022] The lower side wall of the lifting frame 22 is fixedly connected to a sealing plate 34 , the upper side wall of the sealing plate 34 is fixedly connected to a sealing strip 35 , and the lower inner wall of the shell 1 is provided with a sealing groove that matches the sealing strip 35 , ensuring the sealing of the shell 1 .

[0023] A high-pressure air pump 36 is fixedly connected to the upper side wall of the shell 1, and the air outlet end of the high-pressure air pump 36 is fixedly connected to the first hose 18. A switch valve 37 is provided at the air outlet end of the high-pressure air pump 36, and an on-off valve 38 is provided in the first hose 18. A pressure sensor 39 is provided in the first hose 18. The pressure sensor 39 is electrically connected to the controller 10, and can detect which cooling pipe 3 is damaged.

[0024] The operating principle of the present invention is now explained as follows: when the shell and tube cooler is in use, the coolant is transported into the shell 1 through the delivery pipe 6 on the left, and is transported to the delivery pipe 6 on the right through multiple cooling pipes 3, and the coolant is discharged through the recovery box 111 and the discharge pipe 112. At the same time, the cooling medium is transported into the shell 1 through the liquid inlet pipe 8 and discharged through the liquid outlet pipe 9. The cooling medium is cooled by the cooling pipe 3, and the coolant in the cooling pipe 3 absorbs heat and transports the heat to the recovery box 111. External cold water is transported to the recovery box 111 through the spiral pipe 12, and the cold water in the spiral pipe 12 is heated by the heat in the coolant, so that the waste heat is immediately recovered and reused, thereby reducing the discharge of waste heat to the environment. In addition, the shell 1, tube sheet 2, cooling pipe 3, head 5, delivery pipe 6, liquid inlet pipe 8 and liquid outlet pipe 9 and other components are all modularly designed, which is convenient for the operator to replace and maintain later. When scale adheres to the inside of the cooling pipe 3, the scale will cause the heat conduction capacity of the cooling pipe 3 to become weak. Therefore, when the cooled medium enters the cooler, the temperature of the cooled medium drops slightly. After the controller 10 detects this through an external temperature sensor (not shown in the figure), after the cooler stops working (the remaining coolant inside the cooler will be completely discharged), the controller 10 will control the screw linear modules 202 on the left and right sides to work, and the screw linear modules 202 will drive the lifting frames 22 on the left and right sides to move downward to the specified position. Then the controller 10 controls the multiple electric push rods 42 on the left and right sides to work simultaneously, and the electric push rods 42 drive The movable plates 24 on both sides are moved toward the direction close to the tube sheet 2, and the multiple insertion heads 26 are respectively inserted into the multiple cooling tubes 3 on the surface of the tube sheet 2. Then the controller 10 controls the pump 17, the on-off valve 38, and the two magnetic control valves 16 on the upper front side to work simultaneously, and according to the set program, controls the two regulating valves 27 on the same straight line on the left and right sides to open (so that the chemical detergent delivered by the pump 17 is only delivered to one of the cooling tubes 3. By controlling different regulating valves 27 to open, the storage chamber 23 can be connected to different cooling tubes 3). The pump 17 will then release the chemical detergent in the upper front space of the storage box 131 (refer to Figure 8) is transported to the storage chamber 23 through the first hose 18, and the chemical detergent is transported to a designated cooling pipe 3 through the corresponding telescopic tube 25 and the insertion head 26 to clean the scale in the cooling pipe 3. The cleaned mixture will flow back to the storage box 131 through the right telescopic tube 25, the insertion head 26, the storage chamber 23 and the second hose 19, and continue to be transported by the pump 17 to circulate and flush in the cooling pipe 3. The chemical detergent is not diverted and a high flow rate is still maintained in the cooling pipe 3, which improves the effect of cleaning scale. When the scale in the cooling pipe 3 After being dissolved by the chemical detergent, the pH value of the chemical detergent will change. When the pH value of the chemical detergent no longer changes through the pH detector 33, it indicates that the scale in the cooling pipe 3 has been completely cleaned. The controller 10 will control the pump 17 to stop working and control the on-off valve 38 to close. Then the controller 10 controls the high-pressure air pump 36 and the switch valve 37 to work. Referring to the above working steps, the high-pressure air pump 36 conveys external gas into the cooling pipe 3 and re-transportes the remaining chemical detergent in the cooling pipe 3 to the corresponding position in the storage box 131 for storage (refer to Figure 8 The front side wall of the storage box 131 is connected to an exhaust pipe with a valve. By opening the valve in the exhaust pipe, the air pressure inside the storage box 131 can be maintained balanced. After the high-pressure air pump 36 has been working for ten seconds, the remaining chemical detergent inside the cooling pipe 3 will be completely cleaned. Then the controller 10 will repeat the above steps to flush the other cooling pipes 3 one by one. During the flushing process, the controller 10 detects through the pH detector 33 that the pH value of the chemical detergent has dropped to the usage standard (after the pH value of the chemical detergent exceeds 5), and the controller 10 will control the high-pressure air pump 36 to repeat the above steps to deliver the gas to the cooling pipe 3, and control the blocking valve 32 to close and the recovery valve 31 to open, so that the remaining substandard chemical detergent in the cooling pipe 3 can be delivered to the waste liquid tank 29 for storage. After the high-pressure air pump 36 has been working for ten seconds, the remaining substandard chemical detergent in the cooling pipe 3 will be completely discharged into the waste liquid tank 29. At this time, the controller 10 will control the pump 17 to repeat the above steps, but when controlling the two magnetic control valves 16 to open, it controls the other two magnetic control valves 16 to open, and deliver new chemical detergent to the cooling pipe 3 to clean the scale to ensure that the scale is completely removed. When the cooling pipe 3 is damaged during use, the coolant and the cooled medium in the cooling pipe 3 will mix. After the controller 10 detects this through an external water quality detector (not shown in the figure), it will control the cooler to stop working and promptly remind the operator through the internal buzzer module. After hearing the prompt, the operator needs to empty the cooler immediately and repeat the above steps to insert multiple insertion heads 26 into the two ends of multiple cooling pipes 3 respectively. Then the controller 10 controls the high-pressure air pump 36 to work, and controls the switch valve 37 to open, and controls the blocking valve 32 to close. The high-pressure air pump 36 will deliver external gas to the corresponding one. The cooling pipe 3 is inside and the set pressure is maintained inside the cooling pipe 3. When the pressure sensor 39 in the second hose 19 detects that the internal air pressure of the cooling pipe 3 reaches the set threshold value (2 standard atmospheric pressures), the controller 10 will control the high-pressure air pump 36 to stop working and maintain this state for five seconds. When the pressure sensor 39 detects that the internal air pressure of the cooling pipe 3 decreases within five seconds, it means that the cooling pipe 3 is damaged. The controller 10 will control the corresponding position light bead 41 on the display panel 40 to light up, so that the operator can quickly find the corresponding cooling pipe 3. When the internal air pressure of the cooling pipe 3 does not change within five seconds, the remaining cooling pipes 3 will be tested.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A modular heat-recoverable energy-saving shell-and-tube cooler, comprising a shell (1), wherein the inner wall of the shell (1) is fixedly connected to two tube sheets (2), a plurality of cooling tubes (3) are fixedly inserted between the two tube sheets (2), a plurality of baffles (4) are fixedly connected to the upper and lower inner walls of the shell (1), and a plurality of cooling tubes (3) pass through the plurality of baffles (4), a head (5) is connected to the left and right sides of the shell (1), a side wall of the head (5) is fixedly connected to a delivery pipe (6), a control valve (7) is provided in each of the two delivery pipes (6), a lower side wall of the shell (1) is fixedly connected to a liquid inlet pipe (8) and a liquid outlet pipe (9), the shell (1), the tube sheets (2), the cooling tubes (3), the head (5), the delivery pipe (6), the liquid inlet pipe (8) and the liquid outlet pipe (9) are all modularly designed, and a controller (10) is connected to the front side wall of the shell (1), characterized in that Also includes: A heat recovery component (11) is provided at the right end of the right delivery pipe (6) for recovering and reusing heat; A pumping assembly (13), arranged on the upper side wall of the housing (1), for conveying chemical detergent; Two plug assemblies (20) are arranged on the upper side wall of the housing (1) and located on both sides of the pumping assembly (13), and can clean multiple delivery pipes (6) one by one.

2. A modular heat-recoverable energy-saving shell-and-tube cooler according to claim 1, characterized in that: The heat recovery assembly (11) comprises a recovery box (111), the recovery box (111) being fixedly connected to the right end of the right delivery pipe (6), the right side wall of the recovery box (111) being fixedly connected to a discharge pipe (112), a spiral tube (12) being placed in the recovery box (111), and both ends of the spiral tube (12) extending out of the recovery box (111).

3. The modular heat-recoverable energy-saving shell-and-tube cooler according to claim 1, characterized in that: The pumping assembly (13) includes a storage box (131) fixedly connected to the upper side wall of the shell (1), the inner wall of the storage box (131) is fixedly connected to a partition frame (132), the upper side wall of the shell (1) is fixedly connected to two hollow plates (14), a plurality of connecting pipes (15) are fixedly connected between the two hollow plates (14) and the storage box (131), a magnetic control valve (16) is provided in the connecting pipe (15), the upper side wall of the shell (1) is fixedly connected to a pump (17), the liquid inlet end of the pump (17) is connected to the left hollow plate (14), the liquid outlet end of the pump (17) is fixedly connected to a first hose (18), and the right side wall of the hollow plate (14) on the right is fixedly connected to a second hose (19).

4. A modular heat-recoverable energy-saving shell-and-tube cooler according to claim 3, characterized in that: The plug assembly (20) includes a mounting cover (201), the mounting cover (201) is connected to the upper side wall of the housing (1), the side wall of the mounting cover (201) away from the pumping assembly (13) is connected to a screw linear module (202), the movable end of the screw linear module (202) is fixedly connected to a bending rod (21), the left and right sides of the mounting cover (201) are provided with sliding openings, the lower end of the bending rod (21) passes through the mounting cover (201) and is connected to a lifting frame (22), and the interior of the lifting frame (22) is provided with a storage cavity (23), the ends of the first hose (18) and the second hose (19) away from each other are both connected to the storage chamber (23), the inner wall of the lifting frame (22) is fixedly connected to the movable plate (24) through the electric push rod (42), and a plurality of telescopic tubes (25) are fixedly connected between the movable plate (24) and the storage chamber (23), and the ends of the telescopic tubes (25) away from the storage chamber (23) pass through the movable plate (24) and are fixedly connected to an insertion head (26) that matches the cooling pipe (3), and a regulating valve (27) is provided in the insertion head (26).

5. The modular heat-recoverable energy-saving shell-and-tube cooler according to claim 1, characterized in that: The upper side wall of the housing (1) is fixedly connected to a bracket (28), the upper side wall of the bracket (28) is fixedly connected to a waste liquid tank (29), the waste liquid tank (29) and the second hose (19) are fixedly connected to a same recovery pipe (30), a recovery valve (31) is provided in the recovery pipe (30), and a blocking valve (32) is provided in the second hose (19), and the lower side wall of the bracket (28) is fixedly connected to a pH detector (33), and the detection end of the pH detector (33) is located in the second hose (19).

6. A modular heat-recoverable energy-saving shell-and-tube cooler according to claim 4, characterized in that: The lower side wall of the lifting frame (22) is fixedly connected to a sealing plate (34), the upper side wall of the sealing plate (34) is fixedly connected to a sealing strip (35), and the lower inner wall of the shell (1) is provided with a sealing groove that matches the sealing strip (35).

7. The modular heat-recoverable energy-saving shell-and-tube cooler according to claim 1, characterized in that: A high-pressure air pump (36) is fixedly connected to the upper side wall of the shell (1), and the air outlet end of the high-pressure air pump (36) is fixedly connected to the first hose (18). A switch valve (37) is provided at the air outlet end of the high-pressure air pump (36), an on-off valve (38) is provided in the first hose (18), and a pressure sensor (39) is provided in the first hose (18). The pressure sensor (39) and the controller (10) are electrically connected.

8. The modular heat-recoverable energy-saving shell-and-tube cooler according to claim 1, characterized in that: The front side wall of the housing (1) is connected to a display panel (40), and a surface of the display panel (40) is connected to a plurality of position lamp beads (41).

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