KR102584593B1 - Apparatus for cleaning of heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger cleaning device, and more particularly, to a heat exchanger cleaning device capable of spraying high-pressure cleaning water to clean the tubes of a heat exchanger.
The heat exchanger cleaning device according to the present invention supplies washing water for cleaning the tube of the heat exchanger, a supply hose inserted into the tube and provided with a nozzle at the end for spraying the washing water into the tube, and washing water is sprayed from the supply hose. A gripping part installed on the supply hose so that the worker can hold it to support the supply hose while the worker is using the supply hose, a pump connected to the supply hose to supply cleaning water to the supply hose, and a pump that can supply or block the supply of cleaning water to the nozzle. a cleaning unit including a high-pressure valve installed on the supply hose; an operating unit capable of manipulating the operation of the pump or the high-pressure valve, wherein the operating unit is a gripping part provided in the gripping unit so that an operator can manipulate the operation of the pump or the high-pressure valve while supporting the supply hose. A switch driving unit provided with a switch and a switch block driven forward and backward by the holding switch, and a switch drive unit installed on the forward and backward path of the switch block to open the high pressure valve when pressed by the switch block and when the pressure is released, the high pressure valve is opened. It is equipped with a valve operation switch that adjusts the high pressure valve to close.

Description

Heat exchanger cleaning device {Apparatus for cleaning of heat exchanger}

The present invention relates to a heat exchanger cleaning device, and more particularly, to a heat exchanger cleaning device capable of spraying high-pressure cleaning water to clean the tubes of a heat exchanger.

Typically, heat exchangers are installed in various industrial sites, chemical plants, or air conditioning equipment to exchange heat between high-temperature fluids and low-temperature fluids. This heat exchanger is a tube bundle made up of a number of tubes through which fluid can flow, and a tube bundle that is wrapped on the outside to form a flow path through which other fluids can flow so that heat can be exchanged with the fluid flowing within the tubes. It consists of a shell.

However, scale is deposited on the tubes of the heat exchanger as the operation time elapses. If scale occurs in the heat exchanger, heat exchange efficiency is reduced, resulting in economic loss and reduced industrial productivity, so removing scale from the heat exchanger is very important.

In order to remove the scale of the heat exchanger, Korean Patent Publication No. 10-2003-0016942 discloses a multi-function device that allows the operator to control the operation of a drive motor to eject ozonated water or rotate a flexible wire by operating a foot switch with his or her foot. A pipe scale removal device is disclosed.

In addition, Republic of Korea Patent No. 10-1046308 discloses a customs machine that allows an operator to clean a pipe by pressing a work pedal connected to the main body to rotate a rotating brush mounted on the tip of a flexible cable.

However, in this heat exchanger cleaning device, the driving force for cleaning the piping of the heat exchanger is controlled by a separately connected foot switch. Washing water is sprayed while the worker presses the footswitch, and when the worker takes his or her foot off the footswitch, the washing water is sprayed. However, in order to maintain the spraying state of washing water for heat exchanger cleaning work, the worker must keep pressing the foot switch. In this case, the worker's posture becomes unstable and the worker may fall over due to the repulsive force transmitted through the supply hose. There is a risk.

For this reason, in the heat exchanger cleaning work, in addition to the worker who holds the supply hose and performs the cleaning, an operator who operates the foot switch is also used. In this case, excessive labor costs are required and work efficiency is reduced when communication between workers is poor. There is a problem that can arise.

Alternatively, a switch may be provided on a holding part for holding the supply hose through which washing water is sprayed, so that washing water is sprayed while the switch is pressed, and the washing water is blocked when the pressure of the spray switch is released. However, in this case, the operator must hold the switch while the washing water is sprayed, making it difficult for the worker to stably support the supply hose, and it is difficult to press the switch with a certain strength due to the repulsion force transmitted through the supply hose, so the washing water is not stable. There is a problem in that it does not spray properly.

Republic of Korea Patent Publication No. 10-2003-0016942: Multi-functional pipe scale removal device Republic of Korea Patent No. 10-1046308: Customs machine

The present invention is intended to solve the above problems, and the purpose of the present invention is to provide a heat exchanger cleaning device in which an operator holding a supply hose through which cleaning water is sprayed can control the supply of cleaning water.

In addition, the purpose of the present invention is to provide a heat exchanger cleaning device that can stably support the supply hose by allowing an operator supporting the supply hose for cleaning the piping of the heat exchanger to easily control the supply of cleaning water. .

The heat exchanger cleaning device according to the present invention to solve the above problems includes a supply hose that supplies washing water for cleaning the tube of the heat exchanger and is inserted into the tube and has a nozzle at the end for spraying the washing water into the tube; A gripping part installed on the supply hose so that an operator can hold the supply hose to support it while the washing water is sprayed from the supply hose, a pump connected to the supply hose to supply washing water to the supply hose, and the washing water a cleaning unit including a high-pressure valve installed on the supply hose to supply or block supply to the nozzle; an operating unit capable of manipulating the operation of the pump or the high-pressure valve, wherein the operating unit is a gripping part provided in the gripping unit so that an operator can manipulate the operation of the pump or the high-pressure valve while supporting the supply hose. A switch driving unit provided with a switch and a switch block driven forward and backward by the holding switch, and a switch drive unit installed on the forward and backward path of the switch block to open the high pressure valve when pressed by the switch block and when the pressure is released, the high pressure valve is opened. It is equipped with a valve operation switch that adjusts the high pressure valve to close.

The switch driving unit includes a frame having a forward and backward space in which the switch block can advance and retreat in the direction of pressing or releasing the valve operation switch disposed at the bottom, and an actuator mounted on the top of the frame so that the drive shaft faces the forward and backward space. and a screw shaft connected to the drive shaft within the advance and retreat space and screwed to the switch block to raise and lower the switch block according to a rotation direction, one side of which is fixed to the frame to guide the elevation and lowering of the switch block, and the switch A guide is provided that extends parallel to the screw axis so as to penetrate the block.

The valve operation switch has a pressing portion that moves or rotates by being pressed by the lowering switch block or is restored to its position when the switch block rises and is released, and is provided on the lifting path of the switch block, and is moved by the switch block. A first measurement sensor capable of measuring at least one of the lifting position, rotation angle, and pressure of the pressed pressing part, and a first measuring value measured from the first measuring sensor until it reaches the input value of the holding part switch. It further includes a control unit that drives the actuator to adjust the pressure of the pressing portion by the switch block.

The valve operation switch is provided on the lifting path of the switch block with a pressing portion that moves or rotates by being pressed by the lowering switch block or is restored to its position when the switch block rises and is released, and the high pressure valve is opened. As a result, a second measurement sensor capable of measuring the pressure of the washing water supplied to the nozzle, and the high pressure valve are operated until the second measurement value measured from the second measurement sensor reaches the input value of the grip switch. It is further provided with a control unit that drives the actuator so that the pressure of the pressing part by the switch block is controlled.

It is further provided with a second measurement sensor capable of measuring the pressure of the washing water supplied to the nozzle as the high pressure valve is opened, and the control unit sets a pressure value of the washing water in the supply hose proportional to the first measurement value. If the second measurement value of the pressure of the washing water delivered from the second measurement sensor is higher or lower than the set pressure value, the pressing portion is pressed or pressed until the second measurement value reaches the set pressure value. The actuator is driven so that the switch block is lifted and released.

The control unit stops operation of the pump when the pressing portion is released, or stops the pump when the pressure of the washing water is detected from the second measurement sensor for a predetermined time while the pump is operating and the high pressure valve is closed. stops the operation of

The valve operation switch includes a switch body disposed below the switch block, and a switch body on the lifting path of the switch block so that it is pressed and rotated as the switch block descends or restored when pressed as the switch block rises. It has a pressing portion hinged to the switch body, and the switch driving unit includes a ground block hinged to the end of the switch block so that the direction of the pressing force transmitted to the pressing portion changes as the switch block descends, and the ground block. It further includes an elastic member installed at a hinge joint between the ground block and the switch block to exert a restoring force in line with the moving path of the switch block, and the elastic member is disposed on the ground block from one side facing the switch block. It is made of a coil spring with a diameter that increases as it progresses toward the other side, and the ground block includes a rotary connection portion that is hinged to the end of the switch block and a ground portion that extends to a larger width from the bottom of the rotation connection portion.

In the heat exchanger cleaning device according to the present invention, the worker holding the supply hose can operate the high-pressure valve by pressing the valve operation switch for controlling the high-pressure valve or releasing the pressurized state by operating the holding switch to raise and lower the switch block. This can save labor costs and improve work efficiency.

In addition, in the heat exchanger cleaning device according to the present invention, when the operator operates the grip switch, the switch block maintains the lowered position to continuously press the valve operation switch, so that the operator presses the grip switch while the washing water is sprayed. There is no need to maintain the supply hose, so the supply hose can be held stably.

1 is an explanatory diagram illustrating a heat exchanger cleaning device according to a first embodiment of the present invention;
Figure 2 is a front cross-sectional view of the switch driving unit of Figure 1;
Figure 3 is a block diagram for explaining the control unit of the heat exchanger cleaning device of Figure 1;
Figure 4 is a front cross-sectional view of the switch driving unit of the heat exchanger cleaning device according to the second embodiment of the present invention.

Hereinafter, the heat exchanger cleaning device according to the present invention will be described in detail with reference to the attached drawings.

1 to 3 show a heat exchanger cleaning device according to a first embodiment of the present invention. Referring to the drawing, the heat exchanger cleaning device according to the first embodiment of the present invention includes a cleaning unit 10 capable of spraying washing water for cleaning the tube 2 of the heat exchanger 1, and an operator using the cleaning unit ( 10) It is equipped with a control panel to control the washing water supplied from the machine.

In addition, the heat exchanger cleaning device according to the first embodiment of the present invention includes a first measurement sensor 85 to detect the pressed state of the pressing portion 82, which will be described later, and a first measurement sensor 85 to measure the pressure of the washing water in the supply hose 12. It further includes a second measurement sensor 19 for controlling the operation of the operating unit and a control unit 100 for controlling the operation of the operating unit.

The washing unit 10 supplies washing water to clean the tube 2 of the heat exchanger 1, and is inserted into the tube 2 and has a nozzle 11 at the end for spraying the washing water into the tube 2. A hose 12, a gripper 13 installed on the supply hose so that the worker can hold it to support the supply hose 12 while the cleaning water is sprayed from the supply hose 12, and a supply hose ( It includes a pump 14 connected to the supply hose 12 to supply to the nozzle 12) and a high pressure valve 16 installed on the supply hose 12 to supply or block the supply of washing water to the nozzle 11.

The supply hose 12 is divided into a first section 12b of a length area connected to the nozzle 11 based on the high pressure valve 16, and a second section 12c connected to the pump 14. The supply hose 12 is a high-pressure hose that can withstand the high pressure of the washing water supplied from the pump 14. In addition, the supply hose 12 further includes a bypass part 18 that connects the first section 12b and the second section 12c without passing through the high pressure valve 16. The bypass unit 18 is equipped with a manual valve 17 that can be operated manually, allowing the operator to manually control the supply of washing water in an emergency when the high pressure valve 16 is broken.

The high pressure valve 16 is connected to the valve operation switch 80, which will be described later, and is supplied from the second section 12c to the first section 12b according to the signal value or driving force received from the valve operation switch 80. A flow control valve is applied to control the flow rate of washing water.

As an example, the high pressure valve 16 may be a flow control valve of a power steering system disclosed in Republic of Korea Registered Publication No. 20-0357691.

Differently, the high pressure valve 16 is mechanically connected to the rotation shaft 83 of the valve operation switch 80 and a gearbox (not shown), and operates at high pressure according to the rotation of the rotation shaft 83 of the valve operation switch 80. A configuration that opens and closes a disc, ball, or plug that blocks the flow path of washing water within the valve 16 may be applied.

A gun body 15 is installed in the first section 12b of the supply hose 12. A gripping portion 13 extending in a direction intersecting the supply hose 12 is formed on the gun body 15 so that an operator can grip it. The gun body (15) is capable of relative movement along the longitudinal direction of the supply hose (12) so that the operator can insert or withdraw the supply hose (12) into the tube (2) while holding the grip part (13). It is installed properly.

The gun body 15 is provided with a display unit 120 that can display to the user the input value entered by the operator through the grip switch 110, the pressure value set in the control unit 100, and the first and second measurement values. do.

The operating unit moves forward and backward by the grip switch 110 provided in the grip part so that the operator can operate the pump or the high pressure valve 16 while supporting the supply hose 12, and the grip switch 110. A switch driving unit 30 equipped with a driven switch block 70 is installed on the advance and retreat path of the switch block 70, and when pressed by the switch block 70, the high pressure valve 16 is opened and the pressure is released. It is provided with a valve operation switch (80) that controls the high pressure valve (16) to be closed.

The grip switch 110 is installed on the gun body 15 so that the operator can easily operate it by hand while supporting the supply hose 12. The grip switch 110 is electrically connected to the control unit 100. The grip switch 110 may be connected to the control unit 100 by wire or wirelessly. The grip switch 110 may be a button-type switch or a dial-type switch that the operator can press to transmit a control signal using his or her finger. The user is configured to transmit an input value to the control unit 100, which will be described later, through the grip switch 110. The grip switch 110 may be composed of a plurality of input buttons and may be configured as a keyboard capable of entering a specific input value into the control unit 100.

The switch driving unit 30 includes a frame 40 having a forward and backward space 46 in which the switch block 70 can advance and retreat in the direction of pressing the valve operation switch 80 disposed at the bottom, and a drive shaft having a forward and backward space 46. The actuator 50, which is mounted on the top of the frame 40 so as to face the It is provided with a screw shaft 53 and a guide that is fixed on one side to the frame 40 and extends to penetrate the switch block 70 to guide the lifting and lowering of the switch block 70.

The frame 40 connects the lower plate 41, the upper plate 42 disposed above the lower plate 41 to be spaced apart from the lower plate 41 at a predetermined interval, and the sides of the lower plate 41 and the upper plate 42. Thus, it is provided with a side plate 43 that supports the upper plate 42 and the lower plate 41 at a predetermined height, and a guide bracket 45 provided on the side plate 43 to which a guide 50, which will be described later, is coupled.

The lower plate 41 and the upper plate 42 are formed in a rectangular plate shape with the same width and width. Between the lower plate 41 and the upper plate 42, a space 46 is provided through which the switch block 50, which will be described later, can advance and retreat.

A drive shaft insertion hole 47 through which the drive shaft (not shown) of the actuator 50 can be inserted is formed through the upper plate 42.

The guide bracket 45 is formed in a plate shape that protrudes into the advance/retract space 46 from one surface of the side plate 43 facing each other.

The actuator 50 is mounted on the top of the upper plate 42. The actuator 50 is electrically connected to the control unit 100. The actuator 50 uses a servo motor that can rotate the drive shaft at a predetermined angle according to the drive signal received from the control unit 100.

The actuator 50 is installed so that the drive shaft is disposed downward toward the advance/retract space 46. The actuator 50 is installed so that the drive shaft passes through the drive shaft insertion hole 47. The screw shaft 53 is formed in a tubular shape extending in the vertical direction. The screw shaft 53 is installed so that one side in the longitudinal direction is connected to the drive shaft and the other side is accommodated in the advance/retract space 46. The screw shaft 53 has a thread formed on its outer peripheral surface.

The guide 60 is formed in a tubular shape extending in the vertical direction. One end of the guide 60 in the longitudinal direction is fixed to the upper plate 42. The other end of the guide 60 in the longitudinal direction is fixed to the guide bracket 45.

The switch block 70 includes a plate-shaped lifting panel 71, a pressurizing member 73 mounted on the lower surface of the lifting panel 71, and a screw installed on the lifting panel 71 and screwed to the screw shaft 53. It consists of a coupling member 72 and a guide coupling member 76 installed on the lifting panel 71.

The lifting panel 71 is formed in a rectangular plate shape parallel to the upper plate 41. The lifting panel 71 is disposed between the actuator 50 and the valve operating switch 80 within the advancing/retracting space 46. The screw coupling member 72 is installed on the lifting panel 71. The screw coupling member 72 is formed with a screw shaft coupling hole penetrating parallel to the screw axis 53. A thread groove corresponding to the thread line of the screw shaft 53 is formed on the inner peripheral surface of the screw shaft coupling hole. The screw coupling member 72 is screw-coupled with the screw shaft 53.

The guide coupling member 76 is installed on the lifting panel 71. A guide coupling hole is formed through the guide coupling member 76 parallel to the longitudinal direction of the guide 60.

The guide 60 penetrates the guide coupling hole of the guide coupling member 76, and the screw shaft 53 is screwed with the screw coupling member 72, so that the drive shaft of the actuator 50 rotates in the forward and reverse directions, thereby lifting the lifting panel. (71) is prevented from rotating together with the screw shaft (53) and is lifted up and down.

The pressing member 73 is installed on the lower surface of the lifting panel 71. The pressing member (73) is installed at a position on the axis of the screw shaft (53). The pressing member 73 protrudes downward from the lower surface of the lifting panel 71, and a screw shaft protruding space 75 in which the screw shaft 53 can be accommodated is provided between the lifting panel 71. As the pressing member 73 descends together with the lifting panel 71, it contacts the pressing portion 82 of the valve operation switch 80 and has a pressing protrusion (73) protruding downward from the bottom to press the pressing portion 82 downward. 74) is formed.

The valve operation switch 80 has a switch body 81 disposed below the switch block 70, and is pressed and rotated as the switch block 70 descends, or is released as the switch block 70 rises. Accordingly, a pressing portion 82 that is hinged to the switch body 81 is provided so that the rotational state is restored.

The switch body 81 is installed on the upper surface of the lower plate 41. The switch body 81 is electrically connected to the high pressure valve 16. The pressing portion 82 is provided on the upper part of the switch body 81. One side of the pressing portion 82 is hinged to the rotation shaft 83 provided on one upper side of the switch body 81. The pressing portion 82 is formed in a bent plate shape to cover the upper part of the switch body 81. The pressing portion 82 is installed at an angle so that the other side is located at a higher position than one side. When the pressing part 82 is released from being pressed downward by the pressing protrusion 74, a restoration spring (not shown) is installed between the pressing part 82 and the switch body 81 to restore the pressing part 82 to its position. ) is installed. The restoration spring is a coil spring. The switch body 81 is electrically connected to the high pressure valve 16. The switch body 81 has a foot switch that converts the angle change of the pressing part 82 into an electric signal as the pressing part 82 is pressed downward by the pressing protrusion 74 and transmits it to the high pressure valve 16. Applies.

The first measurement sensor 85 can measure at least one of the position, angle, and pressure of the pressing portion 82 pressed by the switch block 70. In the first embodiment of the present invention, the first measurement sensor 85 is configured to measure the angle of the pressing portion 82. The first measurement sensor 85 is installed in the switch body 81. The first measurement sensor 85 is provided with a detection axis (not shown) coupled to rotate with the rotation axis 83 on an axis line forming a straight line with the rotation axis 83. The first measurement sensor 85 is equipped with an encoder that detects and outputs the rotation of the sensing shaft as the rotation shaft 83 rotates. The first measurement sensor 85 may be a known rotary encoder switch unit. The first measurement sensor 85 is electrically connected to the control unit 100. The first measurement sensor 85 detects the angle of the pressing portion 82, converts it into a first measurement signal, and transmits it to the control unit 100.

The second measurement sensor 19 is installed in the first section 12b. The second measurement sensor 19 is a pressure gauge that can measure the pressure of the washing water supplied from the high pressure valve 16 to the first section 12b. The second measurement sensor 19 is electrically connected to the control unit 100. The second measurement sensor 19 detects the pressure of the washing water flowing within the first section 12b, converts it into a second measurement signal, and transmits it to the control unit 100.

The control unit 100 sets the pressure value of the washing water in the first section 12b of the supply hose 12 in proportion to the first measurement value.

If the second measurement value of the pressure of the washing water delivered from the second measurement sensor 19 is higher or lower than the set pressure value, the control unit 100 presses the pressing part 82 until the second measurement value reaches the set pressure value. ) drives the switch block 70 actuator 50 so that it is pressed or released.

At this time, the control unit 100 determines that the high pressure valve 16 is worn or damaged and is configured to display the worn or damaged state of the high pressure valve 16 to the operator through the display unit 120.

In addition, the control unit 100 stops the operation of the pump 14 when the pressing portion 82 is released, or blocks the supply of washing water to the first section 12b while the pump 14 operates. Preferably, the operation of the pump 14 is stopped when the pressure of the washing water is detected from the second measurement sensor 19 for a predetermined period of time with the high pressure valve 16 closed.

The first and second measurement sensors 85, 19 and the control unit 100 of the first embodiment of the present invention are provided to control the switch driving unit 30 and, unlike the first embodiment of the present invention, are omitted or Individually provided configurations may also be applied.

As described above, the heat exchanger cleaning device according to the first embodiment of the present invention operates the grip switch 110 while the operator holds the grip part 13 and supports the supply hose 12. By raising and lowering the block 70, the valve operation switch 80 for controlling the high pressure valve 16 can be pressed or the pressurized state can be released, eliminating the need for an operator to individually operate the high pressure valve 16 and reducing labor costs. You can save money and improve work efficiency.

In addition, in the heat exchanger cleaning device according to the first embodiment of the present invention, when the grip switch 110 is operated, the switch block 70 is lowered to press the valve operation switch 80, so that the operator can spray the cleaning water. Since the operator does not need to keep pressing the grip switch 110, the operator can more stably support the supply hose 12, and has the advantage of stably spraying the washing water.

Figure 4 shows a switch driving unit of a heat exchanger cleaning device according to a second embodiment of the present invention. Since the heat exchanger cleaning device according to the second embodiment of the present invention has the same configuration as the first embodiment other than the ground block and the elastic member 98, redundant description will be omitted.

Referring to the drawing, the switch driving unit 30 includes a ground block 90 hinged to the end of the switch block 70 so that the direction of the pressing force transmitted to the pressing portion 82 changes as the switch block 70 descends. ) and an elastic member 98 installed at the hinge joint of the ground block 90 and the switch block.

The ground block 90 includes a rotary connection portion 91 that is hinged to the pressing protrusion 74 of the pressing member 73, and a ground portion 92 extending from the bottom of the rotation connection portion to a larger width.

An elastic member insertion groove 93 is formed on the upper surface of the ground portion 92 so that the other end of the elastic member is inserted to prevent the elastic member 98 from slipping. The elastic member insertion groove 93 is formed in an annular shape drawn from the upper surface of the ground portion 92 along the circumferential direction of the elastic member 90.

The elastic member 90 is made of a coil spring whose diameter increases as it progresses from one side facing the switch block 70 to the other side facing the ground block 90. The lower part of the elastic member 90 is installed to be accommodated in the elastic member inlet groove 93. As the switch block 70 descends, the ground block 90 and the ground portion 92 come into close contact with the pressing portion 82. At this time, as the pressing part 82 pressed by the grounding part 92 rotates, the elastic member 90 is in contact with the grounding part 92 so that the grounding part 92 is maintained in close contact with the pressing part 82. An elastic force is applied to restore the position of the branch 92 in a direction intersecting the pressing direction.

As described above, the heat exchanger cleaning device according to the second embodiment of the present invention uniformly transmits the pressing force transmitted through the pressing protrusion 74 of the switch block 70 to the upper surface of the pressing portion 82, thereby forming the pressing protrusion ( 74) to prevent the pressing part 82 from being worn or damaged, thereby preventing the phenomenon of an error occurring in the rotation angle of the pressing part 82 due to the lowering of the switch block 70 due to wear of the pressing part 82. It has the advantage of being preventable.

The present invention described above has been described with reference to an example shown in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

1: heat exchanger 2: tube
10: cleaning unit 11: nozzle
12: supply hose 14: pump
30: switch driving unit 100: control unit

Claims (7)

delete Washing water for cleaning the tube of the heat exchanger is supplied, a supply hose is inserted into the tube and has a nozzle at the end for spraying the washing water into the tube, and an operator supports the supply hose while the washing water is sprayed from the supply hose. A gripping part installed on the supply hose so that it can be gripped, a pump connected to the supply hose to supply washing water to the supply hose, and a high pressure installed on the supply hose so that washing water can be supplied to or blocked from the nozzle. A cleaning unit including a valve;
Provided with a control unit capable of operating the pump or the high pressure valve,
The control unit
A switch driving unit provided with a holding switch provided in the holding portion so that an operator can operate the pump or the high pressure valve while supporting the supply hose, and a switch block driven forward and backward by the holding portion switch, and A valve operation switch is installed on the advance and retreat path of the switch block and opens the high pressure valve when pressed by the switch block, and closes the high pressure valve when the pressure is released,
The switch driving unit is
a frame having an advance/retract space in which the switch block can advance/retract in a direction for pressurizing or depressurizing the valve operation switch disposed at the lower portion;
an actuator mounted on the top of the frame so that the drive shaft faces the advance and retreat space;
a screw shaft connected to the drive shaft within the advance and retreat space and screwed to the switch block to raise and lower the switch block according to a rotation direction;
A heat exchanger cleaning device, characterized in that it has a guide fixed to the frame on one side to guide the lifting and lowering of the switch block and extending parallel to the screw shaft to penetrate the switch block. The method of claim 2, wherein the valve operation switch is
A pressing portion that is pressed by the descending switch block and moves or rotates or is restored to its position when the switch block rises and is released is provided on the lifting path of the switch block,
A first measurement sensor capable of measuring at least one of the lifting position, rotation angle, and pressure of the pressing part pressed by the switch block, and the first measurement value measured from the first measuring sensor is the input value of the holding part switch. A heat exchanger cleaning device further comprising a control unit that drives the actuator to adjust the pressure of the pressing portion by the switch block until it reaches . The method of claim 2, wherein the valve operation switch is
A pressing portion that is pressed by the descending switch block and moves or rotates or is restored to its position when the switch block rises and is released is provided on the lifting path of the switch block,
A second measurement sensor capable of measuring the pressure of the washing water supplied to the nozzle as the high pressure valve opens, and when the second measurement value measured from the second measurement sensor reaches the input value of the grip switch. A heat exchanger cleaning device further comprising a control unit that drives the actuator to control the pressure of the pressing portion by the switch block so that the high pressure valve is driven. According to clause 3,
Further comprising a second measurement sensor capable of measuring the pressure of the washing water supplied to the nozzle as the high pressure valve is opened,
The control unit sets a pressure value of the washing water in the supply hose that is proportional to the first measurement value, and when the second measurement value of the pressure of the washing water delivered from the second measurement sensor is higher or lower than the set pressure value, A heat exchanger cleaning device, characterized in that the actuator is driven to raise and lower the switch block so that the pressing portion is pressed or released until the second measured value reaches a set pressure value. According to clause 5,
The control unit stops operation of the pump when the pressing portion is released, or stops the pump when the pressure of the washing water is detected from the second measurement sensor for a predetermined time while the pump is operating and the high pressure valve is closed. A heat exchanger cleaning device characterized in that it stops the operation of. According to clause 2,
The valve operation switch includes a switch body disposed below the switch block, and a switch body on the lifting path of the switch block so that it is pressed and rotated as the switch block descends or restored when pressed as the switch block rises. It has a pressing portion hinged to the switch body,
The switch driving unit is aligned with a ground block hinged to the end of the switch block so that the direction of the pressing force transmitted to the pressing portion changes as the switch block descends, and the progress path of the switch block of the ground block is aligned. Further comprising an elastic member installed at the hinge joint of the ground block and the switch block to exert restoring force,
The elastic member is made of a coil spring whose diameter increases as it progresses from one side facing the switch block to the other side facing the ground block,
The ground block is a heat exchanger cleaning device characterized in that it has a rotation connection portion hinged to the end of the switch block, and a ground portion extending from the bottom of the rotation connection portion to a greater width.

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