CN215491294U - Descaling equipment - Google Patents

Abstract

The application relates to descaling equipment, which is used for descaling a plate heat exchanger and comprises an ultrasonic vibration device and a descaling device; the ultrasonic vibration device is suitable for being fixedly arranged on the plate heat exchanger; the descaling device comprises a circulating water tank, a flushing pump and a controller; a liquid outlet and a backflow port are formed in the circulating water tank, the liquid outlet is communicated with a water inlet of the flushing pump, a water outlet of the flushing pump is suitable for being communicated with a water inlet of the plate heat exchanger, and the backflow port is suitable for being communicated with a water outlet of the plate heat exchanger; the controller is fixedly arranged on the circulating water tank and is electrically connected with the flushing pump for controlling the opening or closing of the flushing pump. The mode of manual work removing scale one by one after looking down the heat exchanger fin of plate heat exchanger one by one at equipment has been avoided to it, labour saving and time saving, and avoided a lot of dismouting fragile and heat exchanger fin matched with sealing washer to cause bad influence such as cluster water that leaks.

Description

Descaling equipment

Technical Field

The application relates to the field of industrial equipment, in particular to descaling equipment.

Background

The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production and is widely applied. However, the heat exchanger has serious hidden trouble in operation, namely the scaling problem. In recent decades, plate heat exchangers have been developed rapidly, and the types of the plate heat exchangers are more and more, and the application range is wider and wider. The structure of the plate heat exchanger mainly comprises a heat exchange plate group, wherein a fixed pressing plate and a movable pressing plate are arranged on the left side and the right side of the heat exchange plate group, the fixed pressing plate and the movable pressing plate are connected through pressing bolts, the pressing bolts only press the two sides of the heat exchange plate group, and the two sides of the heat exchange plate group are uniformly stressed in the state of being pressed, so that medium in the heat exchange plate group is not smoothly circulated, and the heat exchange effect between the media is influenced. In addition, the heat exchanger needs to be regularly descaled, and when the scale of the plate heat exchanger is removed every time, workers with corresponding working experience need to enter the site, and the workers are disassembled and assembled through tools such as a monkey wrench, a box ruler and a fastening machine and then washed by corresponding acid solution.

The traditional descaling mode is that the heat exchange plates of the plate heat exchanger are manually detached one by one and then descaled one by one, and the assembly is one by one, so that time and labor are wasted, and the sealing rings matched with the heat exchange plates are easily damaged by repeated detachment and installation, which causes water leakage and water leakage.

Disclosure of Invention

In view of this, the application provides a scale removal equipment, and it has avoided the manual work to look for down the heat exchanger fin of plate heat exchanger one by one after the scale removal one by one at the mode of assembling one by one, labour saving and time saving, and avoided many times dismouting easy damage and heat exchanger fin matched with sealing washer to cause bad influence such as the cluster of leaking.

According to an aspect of the application, a descaling device is provided, which is used for descaling a plate heat exchanger and comprises an ultrasonic vibration device and a descaling device;

the ultrasonic vibration device is suitable for being fixedly arranged on the plate heat exchanger;

the descaling device comprises a circulating water tank, a flushing pump and a controller;

a liquid outlet and a backflow port are formed in the circulating water tank, the liquid outlet is communicated with a water inlet of the flushing pump, a water outlet of the flushing pump is suitable for being communicated with a water inlet of the plate heat exchanger, and the backflow port is suitable for being communicated with a water outlet of the plate heat exchanger;

the controller is fixedly arranged on the circulating water tank and is electrically connected with the flushing pump for controlling the opening or closing of the flushing pump.

In one possible implementation manner, the ultrasonic vibration device comprises an ultrasonic vibration rod, an ultrasonic generator, a fixing device and a control cabinet;

the control cabinet is provided with a power supply input end and a control output end, the power supply input end of the control cabinet is suitable for being electrically connected with a power supply, the control output end of the control cabinet is electrically connected with the input end of the ultrasonic generator, and the ultrasonic vibration rod is electrically connected with the output end of the ultrasonic generator;

the fixing device is suitable for being fixedly installed on the plate heat exchanger, the ultrasonic vibration stick is fixedly installed on the fixing device, and the head of the ultrasonic vibration stick is suitable for being abutted to the plate heat exchanger.

In a possible implementation manner, the plurality of ultrasonic vibration rods are fixedly installed on the fixing device, and the plurality of ultrasonic vibration rods are electrically connected with the output end of the ultrasonic generator.

In one possible implementation, a plurality of the ultrasonic vibrator wands are fixedly mounted side by side on the fixing device.

In one possible implementation, the descaling device further comprises a chemical descaling assembly which is arranged beside the circulating water tank;

one end of the chemical descaling component is provided with an adjusting water outlet pipe, and the other end of the adjusting water outlet pipe is communicated with the inner cavity of the circulating water tank;

the chemical descaling assembly is electrically connected with the controller, so that the controller controls the chemical descaling assembly to throw chemical descaling substances into the circulating water tank.

In one possible implementation, the chemical descaling assembly includes an acid adding barrel, an alkali adding barrel, an acid adding pump and an alkali adding pump;

the acid adding barrel and the alkali adding barrel are both arranged beside the circulating water tank;

the acid adding pump is arranged beside the acid adding barrel and is electrically connected with the controller, an acid adding port is arranged on one side of the acid adding barrel and is communicated with a water inlet of the acid adding pump, and a water outlet of the acid adding pump is communicated with the adjusting water outlet pipe;

the alkali adding pump is arranged beside the alkali adding barrel, the alkali adding pump is in point linkage with the controller, an alkali adding port is arranged on one side of the alkali adding barrel, the alkali adding port is communicated with a water inlet of the acid adding pump, and a water outlet of the alkali adding pump is communicated with the adjusting water outlet pipe.

In one possible implementation mode, the controller comprises a flushing controller and an acid-base controller, and a control switch and an acid-base measuring meter are installed on the circulating water tank;

the flushing controller is electrically connected with one end of the control switch, and the other end of the control switch is electrically connected with the flushing pump;

the other end of the control switch is also electrically connected with the input end of the pH value measuring meter, and the output end of the pH value measuring meter is electrically connected with the input end of the pH controller;

the acid-base controller is provided with an acid adding output end and an alkali adding output end, the acid adding output end is electrically connected with a first contact switch, and the other end of the first contact switch is electrically connected with the acid adding pump;

and the alkali adding output end is electrically connected with a second contact switch, and the other end of the second contact switch is electrically connected with the alkali adding pump.

In a possible implementation manner, a first liquid outlet pipe is arranged at the liquid outlet, one end of the first liquid outlet pipe is communicated with the inner cavity of the circulating water tank, and the other end of the first liquid outlet pipe is communicated with the water inlet of the flushing pump;

the other end of the flushing pump is provided with a second liquid outlet pipe, and one side, which is not connected with the flushing pump, of the second liquid outlet pipe is suitable for being connected with a water inlet of the plate heat exchanger;

and a first switch valve is arranged on the second liquid outlet pipe.

In a possible implementation manner, the first liquid outlet pipe extends into the internal cavity of the circulating water tank, and a filtering device is arranged on one side of the first liquid outlet pipe extending into the circulating water tank.

In a possible implementation manner, a liquid change port is arranged on the circulating water tank, a liquid change pipe is installed at the liquid change port, and a second switch valve is installed on the liquid change pipe;

the side of the liquid change pipe which is not connected with the circulating water tank is suitable for being connected with a water source.

The descaling device of this application embodiment setting installation on plate heat exchanger ultrasonic wave vibrating device and with plate heat exchanger's water inlet, the descaling device of delivery port intercommunication, when carrying out plate heat exchanger's washing, utilize ultrasonic wave vibrating device to shake, it is not hard up or drop with the inside interior dirt vibrations of plate heat exchanger. And the controller in the descaling device controls the operation of the flushing pump, the flushing pump pumps the liquid in the circulating water tank, and the liquid flows into the plate heat exchanger through the liquid outlet of the circulating water tank to clean the inner scale in the plate heat exchanger. Liquid after clearing up plate heat exchanger inside can flow to circulation tank's backward flow mouth through plate heat exchanger's delivery port, gets into circulation tank's inside from this, and the inside liquid of circulation tank carries out the circulation to plate heat exchanger's inside and washs. To sum up, the descaling equipment of the embodiment of the application adopts the ultrasonic descaling device and the mode of cleaning the descaling device of the plate heat exchanger to clean the inside of the plate heat exchanger, and the ultrasonic vibration is utilized to loosen or drop the scale in the plate heat exchanger, and the cleanable descaling device of the plate heat exchanger injects cleaning liquid into the inside of the plate heat exchanger device to circularly take out the scale in the plate heat exchanger, so that the scale of the plate heat exchanger can be automatically clear. From this, wash plate heat exchanger's inside through foretell structure is automatic, avoided the manual work to look for plate heat exchanger's heat exchanger fin one by one after the descaling one by one at the mode of assembling one by one, labour saving and time saving, and avoided a lot of dismouting fragile and heat exchanger fin matched with sealing washer to cause bad influence such as the cluster water that leaks.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic structural diagram of a main body of an ultrasonic vibration device of a descaling apparatus according to an embodiment of the present application;

fig. 2 shows a configuration diagram of a descaling device main body of the descaling apparatus according to the embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing or simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

Fig. 1 is a schematic structural diagram of a main body of an ultrasonic vibration device of a descaling apparatus according to an embodiment of the present application. Fig. 2 shows a configuration diagram of a descaling device main body of the descaling apparatus according to the embodiment of the present application. As shown in fig. 1 or 2, the descaling apparatus includes: an ultrasonic vibration device 100 and a descaling device, wherein the ultrasonic vibration device 100 is fixedly installed on the plate heat exchanger 900. The descaling device comprises a circulating water tank, a flushing pump 300 and a controller, wherein a liquid outlet and a backflow port are formed in the circulating water tank, the liquid outlet is communicated with a water inlet of the flushing pump 300, a water outlet of the flushing pump 300 is communicated with a water inlet of the plate heat exchanger 900, and the backflow port is communicated with a water outlet of the plate heat exchanger 900. The controller is fixedly installed on the circulating water tank, and the controller is electrically connected with the flushing pump 300 and used for controlling the opening or closing of the flushing pump 300.

The descaling equipment of the embodiment of the application is provided with the ultrasonic vibration device 100 arranged on the plate heat exchanger 900 and the descaling device communicated with the water inlet and the water outlet of the plate heat exchanger 900, when the plate heat exchanger 900 is cleaned, the ultrasonic vibration device 100 is used for vibrating, and the inner scale inside the plate heat exchanger 900 is vibrated to be loose or fall off. And the controller in the descaling device controls the operation of the flushing pump 300, the flushing pump 300 pumps the liquid in the circulating water tank, and the liquid flows into the plate heat exchanger 900 through the liquid outlet of the circulating water tank, so as to clean the inner scale in the plate heat exchanger 900. The liquid cleaned inside the plate heat exchanger 900 flows to the return port of the circulation tank through the water outlet of the plate heat exchanger 900, and thus enters the inside of the circulation tank, and the liquid inside the circulation tank is cleaned by circulation inside the plate heat exchanger 900. To sum up, the descaling equipment in the embodiment of the present application adopts the ultrasonic descaling device and the mode of the cleanable plate heat exchanger 900 descaling device to clean the inside of the plate heat exchanger 900, and the ultrasonic vibration is utilized to loosen or drop the scale in the plate heat exchanger 900, and the cleanable plate heat exchanger 900 descaling device is adopted to inject the cleaning liquid into the inside of the plate heat exchanger 900 device, so as to circularly take out the scale in the plate heat exchanger 900, thereby realizing automatic cleaning of the scale in the plate heat exchanger 900. From this, wash plate heat exchanger 900's inside automatically through foretell structure, avoided the manual work to look into plate heat exchanger 900's heat exchanger fin one by one after the descaling one by one at the mode of assembling one by one, labour saving and time saving, and avoided dismouting fragile many times and heat exchanger fin matched with sealing washer to cause the harmful effects such as cluster water that leaks.

Here, it should be noted that the washing pump 300 is a circulation pump.

In one possible implementation, the ultrasonic vibration device 100 includes an ultrasonic vibration rod 130, an ultrasonic generator 120, a fixing device 140, and a control cabinet 110, wherein the control cabinet 110 is provided with a power input terminal and a control output terminal, the power input terminal of the control cabinet 110 is electrically connected to a power supply, the control output terminal of the control cabinet 110 is electrically connected to the input terminal of the ultrasonic generator 120, and the ultrasonic vibration rod 130 is electrically connected to the output terminal of the ultrasonic generator 120. The fixing device 140 is fixedly installed on the plate heat exchanger 900, and the ultrasonic vibrator 130 is fixedly installed on the fixing device 140. The fixing device 140 is fixedly mounted on the plate heat exchanger 900, the ultrasonic vibrator 130 is fixedly mounted on the fixing device 140, and the head of the ultrasonic vibrator 130 abuts against the plate heat exchanger 900. Wherein, the ultrasonic generator 120 can send a control signal to the ultrasonic vibration rod 130 fixed on the fixing device 140, and the ultrasonic vibration rod 130 receives the control signal of the ultrasonic generator 120 and controls the head of the ultrasonic vibration rod 130 to vibrate, thereby vibrating and loosening or falling off the scale inside the plate heat exchanger 900. Therefore, the structure of the embodiment of the application is further optimized.

Further, in a possible implementation manner, a plurality of ultrasonic vibrators 130 are provided, a plurality of ultrasonic vibrators 130 are fixedly mounted on the fixing device 140, and the plurality of ultrasonic vibrators 130 are electrically connected to the output end of the ultrasonic generator 120. Thus, the plate heat exchanger 900 can be cleaned more thoroughly and at a higher speed by providing the plurality of ultrasonic vibrator rods 130.

Further, in one possible implementation, a plurality of ultrasonic vibrator wands 130 are fixedly mounted side-by-side on the fixture 140.

Here, it should be noted that the control cabinet 110, the ultrasonic generator 120 and the ultrasonic vibrator 130 can be implemented by conventional techniques of those skilled in the art, and the detailed description thereof is omitted here.

Here, it should also be noted that in one possible implementation, the fixing device 140 is in the form of a "Z" frame, one side plate surface of the fixing device 140 is fixed on the plate heat exchanger 900, and the ultrasonic vibrator bar 130 is fixedly mounted on the side plate surface of the fixing device 140 facing the plate heat exchanger 900. Namely, the fixed mounting comprises a first plate, a second plate and a third plate which are sequentially connected in a Z shape, one side of the first plate departing from the third plate is fixed on the plate heat exchanger 900, the ultrasonic vibration rod 130 is fixedly mounted on one side of the third plate facing the first plate, the head of the ultrasonic vibration rod 130 is arranged facing the plate heat exchanger 900, and the head of the ultrasonic vibration rod 130 is abutted to the plate heat exchanger 900. Therefore, the structure of the embodiment of the application is further optimized.

Further, in a possible implementation, the descaling device further comprises a chemical descaling assembly 400, and the chemical descaling assembly 400 is arranged beside the circulating water tank. One end of the chemical descaling assembly 400 is provided with an adjusting water outlet pipe 410, and the other end of the adjusting water outlet pipe 410 is communicated with the internal cavity of the circulating water tank. The chemical descaling assembly 400 is electrically connected with the controller so that the controller controls the chemical descaling assembly 400 to throw chemical descaling substances into the circulating water tank. From this, can clear up the interior dirt of plate heat exchanger 900 through the mode of chemical descaling for the clearance to the interior dirt of plate heat exchanger 900 is more convenient.

Further, in one possible implementation, the chemical descaling assembly 400 includes an acid adding barrel 420, a base adding barrel 430, an acid adding pump and a base adding pump, and the acid adding barrel 420 and the base adding barrel 430 are disposed beside the circulation water tank. The acid adding pump is arranged beside the acid adding barrel 420 and is electrically connected with the controller, an acid adding port is arranged on one side of the acid adding barrel 420 and is communicated with a water inlet of the acid adding pump, and a water outlet of the acid adding pump is communicated with the adjusting water outlet pipe 410. The alkali adding pump is arranged beside the alkali adding barrel 430 and is in point linkage with the controller, one side of the alkali adding barrel 430 is provided with an alkali adding port which is communicated with a water inlet of the acid adding pump, and a water outlet of the alkali adding pump is communicated with the adjusting water outlet pipe 410. Therefore, the inside of the plate heat exchanger 900 can be descaled in an acid washing and alkali washing mode, and the descaling efficiency is further increased.

Here, it should be noted that, in one possible implementation, an installation table is provided on one side of the outer wall of the circulation water tank, and the acid adding barrel 420 and the alkali adding barrel 430 are fixed side by side on the table surface of the installation table. And the top of the alkali adding barrel 430 is provided with a placing box, the acid adding pump and the alkali adding pump are both fixedly arranged in the placing box, the water inlet of the acid adding pump is provided with an acid adding pipe communicated with the acid adding barrel 420, and the water inlet of the alkali adding pump is provided with an alkali adding pipe communicated with the alkali adding barrel 430.

Further, in a possible implementation manner, the controller includes a flushing controller and an acid-base controller, a control switch and an acid-base meter are installed on the circulating water tank, the flushing controller is electrically connected with one end of the control switch, and the other end of the control switch is electrically connected with the flushing pump 300. The other end of the control switch is also electrically connected with the input end of the pH value measuring meter, and the output end of the pH value measuring meter is electrically connected with the input end of the pH controller. The acid-base controller is provided with an acid adding output end and an alkali adding output end, the acid adding output end is electrically connected with a first contact switch, and the other end of the first contact switch is electrically connected with the acid adding pump. The alkali adding output end is electrically connected with a second contact switch, and the other end of the second contact switch is electrically connected with the alkali adding pump. Therefore, the control structure of the embodiment of the application is further optimized.

Here, it should be noted that the flushing controller, the acid-base meter, the first contact switch and the second contact switch are conventional technical means of those skilled in the art, and are not described herein in detail.

In a possible implementation manner, a first liquid outlet pipe 500 is disposed at the liquid outlet, one end of the first liquid outlet pipe 500 is communicated with the internal cavity of the circulation water tank, and the other end of the first liquid outlet pipe 500 is communicated with the water inlet of the flush pump 300. The other end of the flush pump 300 is provided with a second liquid outlet pipe 600, one side of the second liquid outlet pipe 600, which is not connected with the flush pump 300, is suitable for connecting the water inlet of the plate heat exchanger 900, and the second liquid outlet pipe 600 is provided with a first switch valve. Therefore, the structure of the embodiment of the application is further optimized.

Further, in a possible implementation manner, the first liquid outlet pipe 500 extends into the inner cavity of the circulation water tank, and a filtering device 700 is disposed on a side of the first liquid outlet pipe 500 extending into the circulation water tank. Here, it should be noted that the filtering apparatus 700 is a conventional technique for those skilled in the art, and the detailed description thereof is omitted here.

In a possible implementation manner, a liquid change port is arranged on the circulating water tank, a liquid change pipe 800 is installed at the liquid change port, a second switch valve is installed on the liquid change pipe 800, and the side, which is not connected with the circulating water tank, of the liquid change pipe 800 is suitable for being connected with a water source. Therefore, the structure of the embodiment of the application is further optimized.

In a possible implementation mode, the water circulation device further comprises a moving vehicle, the moving vehicle comprises a mounting plate and moving wheels, the circulating water tank is fixedly mounted at the top of the moving plate, the moving wheels are provided with a plurality of moving wheels, and the moving wheels are fixedly mounted at the bottom of the mounting plate.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A descaling device is used for descaling a plate heat exchanger and is characterized by comprising an ultrasonic vibration device and a descaling device;

the ultrasonic vibration device is suitable for being fixedly arranged on the plate heat exchanger;

the descaling device comprises a circulating water tank, a flushing pump and a controller;

a liquid outlet and a backflow port are formed in the circulating water tank, the liquid outlet is communicated with a water inlet of the flushing pump, a water outlet of the flushing pump is suitable for being communicated with a water inlet of the plate heat exchanger, and the backflow port is suitable for being communicated with a water outlet of the plate heat exchanger;

the controller is fixedly arranged on the circulating water tank and is electrically connected with the flushing pump for controlling the opening or closing of the flushing pump.

2. The descaling apparatus according to claim 1, wherein the ultrasonic vibrator comprises an ultrasonic vibrator rod, an ultrasonic generator, a fixing device and a control cabinet;

the control cabinet is provided with a power supply input end and a control output end, the power supply input end of the control cabinet is suitable for being electrically connected with a power supply, the control output end of the control cabinet is electrically connected with the input end of the ultrasonic generator, and the ultrasonic vibration rod is electrically connected with the output end of the ultrasonic generator;

the fixing device is suitable for being fixedly installed on the plate heat exchanger, the ultrasonic vibration stick is fixedly installed on the fixing device, and the head of the ultrasonic vibration stick is suitable for being abutted to the plate heat exchanger.

3. The descaling apparatus according to claim 2, wherein a plurality of the ultrasonic vibrator rods are provided, and a plurality of the ultrasonic vibrator rods are fixedly mounted on the fixing device and electrically connected to the output end of the ultrasonic generator.

4. A descaling apparatus according to claim 3, wherein a plurality of the ultrasonic vibrator wands are fixedly mounted side by side on the fixture.

5. The descaling apparatus according to any one of claims 1 to 4, wherein the descaling device further comprises a chemical descaling assembly disposed aside the circulation tank;

one end of the chemical descaling component is provided with an adjusting water outlet pipe, and the other end of the adjusting water outlet pipe is communicated with the inner cavity of the circulating water tank;

the chemical descaling assembly is electrically connected with the controller, so that the controller controls the chemical descaling assembly to throw chemical descaling substances into the circulating water tank.

6. The descaling apparatus of claim 5, wherein the chemical descaling assembly comprises an acid addition barrel, a base addition barrel, an acid addition pump and a base addition pump;

the acid adding barrel and the alkali adding barrel are both arranged beside the circulating water tank;

the acid adding pump is arranged beside the acid adding barrel and is electrically connected with the controller, an acid adding port is arranged on one side of the acid adding barrel and is communicated with a water inlet of the acid adding pump, and a water outlet of the acid adding pump is communicated with the adjusting water outlet pipe;

the alkali adding pump is arranged beside the alkali adding barrel, the alkali adding pump is in point linkage with the controller, an alkali adding port is arranged on one side of the alkali adding barrel, the alkali adding port is communicated with a water inlet of the acid adding pump, and a water outlet of the alkali adding pump is communicated with the adjusting water outlet pipe.

7. The descaling device according to claim 6, wherein the controller comprises a flushing controller and an acid-base controller, and a control switch and an acid-base measuring meter are installed on the circulating water tank;

the flushing controller is electrically connected with one end of the control switch, and the other end of the control switch is electrically connected with the flushing pump;

the other end of the control switch is also electrically connected with the input end of the acid-base measuring meter, and the output end of the acid-base measuring meter is electrically connected with the input end of the acid-base controller;

the acid-base controller is provided with an acid adding output end and an alkali adding output end, the acid adding output end is electrically connected with a first contact switch, and the other end of the first contact switch is electrically connected with the acid adding pump;

and the alkali adding output end is electrically connected with a second contact switch, and the other end of the second contact switch is electrically connected with the alkali adding pump.

8. The descaling apparatus according to any one of claims 1 to 4, wherein a first liquid outlet pipe is arranged at the liquid outlet, one end of the first liquid outlet pipe is communicated with the internal cavity of the circulating water tank, and the other end of the first liquid outlet pipe is communicated with the water inlet of the washing pump;

the other end of the flushing pump is provided with a second liquid outlet pipe, and one side, which is not connected with the flushing pump, of the second liquid outlet pipe is suitable for being connected with a water inlet of the plate heat exchanger;

and a first switch valve is arranged on the second liquid outlet pipe.

9. The descaling apparatus according to claim 8, wherein the first liquid outlet pipe extends into the internal cavity of the circulating water tank, and a filtering device is disposed on a side of the first liquid outlet pipe extending into the circulating water tank.

10. The descaling apparatus according to any one of claims 1 to 4, wherein a liquid change port is provided on the circulation tank, a liquid change pipe is installed at the liquid change port, and a second switch valve is installed on the liquid change pipe;

the side of the liquid change pipe which is not connected with the circulating water tank is suitable for being connected with a water source.

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