CN218270353U - Flange structures for heat exchangers and liquid handling equipment - Google Patents

Abstract

The utility model discloses a flange structure and liquid processing equipment for heat exchangers, comprising a flange plate and a mounting assembly, the flange plate is provided with a liquid inlet through hole, and the mounting assembly includes a first connecting piece and a first sealing The first connecting piece is used to connect the liquid inlet pipeline. The first connecting piece is provided with a first through hole for communicating with the liquid inlet pipeline. The first connecting piece and the flange are detachably fixed and the first through hole It communicates with the liquid inlet through hole, so that the liquid inlet pipeline communicates with the liquid inlet through hole, and the first sealing member is arranged between the first connecting member and the flange. The first connecting piece and the flange are detachably fixed, and the liquid inlet pipeline is connected to the flange through the first connecting piece to realize the communication between the liquid inlet pipeline and the liquid inlet through hole; compared with the traditional welding fixing method, no Welding can realize the installation of the liquid inlet pipeline and the flange plate and make the liquid inlet pipeline communicate with the liquid inlet through hole, and the first sealing member ensures the sealing performance between the first connecting member and the flange plate, which meets the actual production needs.

Description

Flange structures for heat exchangers and liquid handling equipment

technical field

The utility model relates to the technical field of heat exchange, in particular to a flange structure for a heat exchanger and liquid processing equipment.

Background technique

In the pharmaceutical, chemical and other industries, the requirements for hygiene level are very high, and heat exchangers are usually used to exchange heat for materials, which puts forward higher requirements for the interface of heat exchangers.

The heat exchanger cools or heats the material through the flow of the heat exchange medium, and the end of the heat exchanger used for the entry and exit of the clean medium is called the clean end. In order to connect the pipeline of the heat exchange medium to the heat exchanger, flanges are usually used to connect the pipeline to the heat exchanger, and then the pipeline of the heat exchange medium is welded to the flange. However, the operation of welding the pipeline of the heat exchange medium to the flange will cause thermal deformation of the flange and the pipeline of the heat exchange medium due to welding on the one hand, which will affect the assembly accuracy, and on the other hand, the decline in assembly accuracy will affect the connection. The reliability, and then it is difficult to guarantee the reliability of the seal.

Utility model content

Based on this, it is necessary to provide a flange structure for heat exchangers and a liquid handling system; the flange structure for heat exchangers can be installed without welding, so that it will not be caused by welding heat deformation The assembly accuracy is reduced, and the sealing is relatively good at the same time.

Its technical scheme is as follows:

One embodiment provides a flange structure for a heat exchanger, comprising:

A flange plate, the flange plate is provided with a liquid inlet through hole;

The installation assembly includes a first connecting piece and a first sealing piece, the first connecting piece is used to connect the liquid inlet pipeline, and the first connecting piece is provided with a hole for communicating with the liquid inlet pipeline. The first through hole, the first connecting piece is detachably fixed to the flange and communicates the first through hole with the liquid inlet through hole, so that the liquid inlet pipeline and the liquid inlet The through holes communicate with each other, and the first sealing member is arranged between the first connecting member and the flange.

In the above-mentioned flange structure for the heat exchanger, the flange plate is used to fix the clean end of the heat exchanger, the first connecting piece and the flange plate are detachably fixed, and the first through hole communicates with the liquid inlet through hole, and The liquid inlet pipeline is connected to the flange through the first connecting piece, so as to realize the communication between the liquid inlet pipeline and the liquid inlet through hole; compared with the traditional welding fixing method, the liquid inlet pipeline and the method can be realized without welding. The installation of the flange plate makes the liquid inlet pipeline communicate with the liquid inlet through hole, and the first sealing member ensures the sealing performance between the first connecting member and the flange plate, which meets actual production needs.

The technical scheme is further described below:

In one of the embodiments, the flange is also provided with a liquid outlet through hole, the liquid outlet through hole is spaced apart from the liquid inlet through hole, and the installation assembly also includes a second connecting piece and a second seal piece, the second connecting piece is used to connect the liquid outlet pipeline, the second connecting piece is provided with a second through hole for communicating with the liquid outlet pipeline, the second connecting piece and the flange The plate is detachably fixed and the second through hole communicates with the liquid outlet through hole, so that the liquid outlet pipeline communicates with the liquid outlet through hole, and the second seal is arranged on the second between the connector and the flange.

In one of the embodiments, the setting position of the liquid inlet through hole is higher than the setting position of the liquid outlet through hole, and the first connecting piece is used to connect with the first end of the liquid inlet pipeline, so The first connecting piece is arranged obliquely relative to the flange, so that the second end of the liquid inlet pipeline is higher than the first end.

In one of the embodiments, the flange is provided with a fitting groove, the contour of the fitting groove matches the contour of the first connecting piece, and the first connecting piece is connected to the flange through the fitting groove. The blue plate is fixed.

In one of the embodiments, the first connecting piece is arranged in a plate shape, the bottom surface of the matching groove is inclined relative to the surface of the flange, and the upper part of the bottom surface of the matching groove faces the flange. The flange is inclined in a direction away from the first connecting piece, so that the first connecting piece is inclined relative to the flange.

In one of the embodiments, the liquid inlet through hole is set through the bottom wall of the fitting groove, and the flange plate is also provided with a first installation groove, and the first installation groove is arranged at the bottom of the fitting groove on the wall and around the periphery of the liquid inlet hole; the first seal is a first seal ring matching the first installation groove, and the first seal ring is pressed against the first connection Between the component and the flange, a part of the first sealing ring is located in the first installation groove;

Or/and, the flange is also provided with a second installation groove, the second installation groove surrounds the outer circumference of the liquid outlet through hole, and the second seal is matched with the second installation groove The second sealing ring is pressed between the second connecting member and the flange, and a part of the second sealing ring is located in the second installation groove.

In one of the embodiments, the installation assembly further includes a first fixing part, and the first fixing part is used for detachably fixing the first connecting part to the flange;

Or/and, the installation assembly further includes a second fixing part, and the second fixing part is used for detachably fixing the second connecting part to the flange.

In one embodiment, the first connecting member is a regular polygonal plate; or/and, the second connecting member is a regular polygonal plate.

In one embodiment, the flange is a disc, and the flange is used for fixing with the heat exchanger; the liquid inlet through hole and the liquid outlet through hole are round holes.

Another embodiment provides a liquid treatment device, including the flange structure for a heat exchanger according to any one of the above technical solutions.

The above-mentioned liquid treatment equipment adopts the aforementioned flange structure for the heat exchanger, so that the first pipeline of the heat exchange medium and the flange are installed in a non-welding manner, and the requirements for assembly accuracy and sealing are met. Then cooperate with the heat exchanger to process the liquid.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

In addition, the drawings are not drawn in a 1:1 scale, and the relative sizes of the various elements are drawn in the drawings only as examples and not necessarily in true scale.

Fig. 1 is the flange structure used in the heat exchanger and the assembly structure diagram of the heat exchanger in the embodiment of the utility model;

Fig. 2 is the overall schematic view of the flange structure used in the heat exchanger in the embodiment of Fig. 1;

Fig. 3 is an exploded schematic diagram of a flange structure used in a heat exchanger in the embodiment of Fig. 2;

Fig. 4 is a schematic cross-sectional view of a flange structure for a heat exchanger in the embodiment of Fig. 2;

Fig. 5 is a side view of the flange structure used in the heat exchanger in the embodiment of Fig. 2;

Fig. 6 is the overall structure schematic diagram of the flange in Fig. 2 embodiment;

FIG. 7 is a schematic diagram of the overall structure of the first connecting member in the embodiment of FIG. 2 .

Notes on drawings:

100, flange; 110, liquid inlet through hole; 120, liquid outlet through hole; 130, matching groove; 140, first installation groove; 150, second installation groove; 210, first connector; 211, first A through hole; 220, a second connecting piece; 221, a second through hole; 300, a heat exchanger.

detailed description

Embodiment of the utility model is described in detail below in conjunction with accompanying drawing:

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below limit.

Please refer to Fig. 1 to Fig. 3, Fig. 6 and Fig. 7, one embodiment provides a flange structure for heat exchanger 300, including flange plate 100 and installation assembly, flange plate 100 is used for heat exchange The device 300 is connected, and the installation assembly is used to install the pipeline of the heat exchange medium, so that the pipeline of the heat exchange medium communicates with the heat exchanger 300 .

in:

As shown in FIG. 3 and FIG. 6 , the flange 100 is provided with a liquid inlet through hole 110 .

As shown in FIG. 1 , the heat exchanger 300 is roughly arranged in a strip shape, and the clean end of the heat exchanger 300 is used to enter and flow out the heat exchange medium to exchange heat with the material to be exchanged flowing through the heat exchanger 300 .

For example, the left end of the heat exchanger 300 viewed from the perspective of FIG. 1 is a clean end, and the heat exchange medium enters and flows out of the heat exchanger 300 through the left end.

As shown in FIG. 3 and FIG. 6 , the flange 100 is provided with a liquid inlet hole 110 , so that the heat exchange medium enters the heat exchanger 300 and exchanges heat with the material to be exchanged in the heat exchanger 300 .

As shown in Figure 2, Figure 3 and Figure 7, the installation assembly includes a first connector 210 and a first seal (not shown in the figure), the first connector 210 is used to connect the liquid inlet pipeline, the first connector 210 is provided with a first through hole 211 for communicating with the liquid inlet pipeline, the first connecting piece 210 is detachably fixed with the flange 100 and makes the first through hole 211 communicate with the liquid inlet through hole 110, so that the liquid inlet pipe The passage communicates with the liquid inlet hole 110 , and the first sealing member is arranged between the first connecting member 210 and the flange 100 .

The flange structure for the heat exchanger 300, the flange 100 is used to fix the clean end of the heat exchanger 300, the first connecting piece 210 and the flange 100 are detachably fixed, and the first through hole 211 is connected to the inlet The liquid through hole 110 is connected, and the liquid inlet pipeline is connected with the flange 100 through the first connecting piece 210, so as to realize the communication between the liquid inlet pipeline and the liquid inlet through hole 110; Welding can realize the installation of the liquid inlet pipe and the flange 100 and make the liquid inlet pipe communicate with the liquid inlet through hole 110, and the first sealing member ensures the sealing performance between the first connecting member 210 and the flange 100 , to meet the actual production needs.

As shown in Figure 7, the first connecting piece 210 is provided with a first through hole 211, after the liquid inlet pipeline is connected with the first connecting piece 210, the lumen of the liquid inlet pipeline communicates with the first through hole 211, because the second A connecting piece 210 is fixed to the flange 100 and the first through hole 211 communicates with the liquid inlet through hole 110 . Therefore, the liquid inlet pipeline also communicates with the liquid inlet through hole 110 through the first through hole 211 . During operation, the heat exchange medium enters from the liquid inlet pipe and enters the heat exchanger 300 through the first through hole 211 and the liquid inlet through hole 110 .

It is understandable that:

The first connecting piece 210 is equivalent to an intermediate piece, so as to realize the connection between the liquid inlet pipeline and the flange 100 and allow the liquid inlet pipeline to input the heat exchange medium through the liquid inlet through hole 110 on the flange 100 . However, the first connecting member 210 and the flange 100 are detachably fixed. Therefore, compared with the traditional welding fixing method, there will be no thermal deformation caused by welding, which will deteriorate the installation accuracy.

In one embodiment, please refer to FIG. 2 to FIG. 4 and FIG. 6, the flange 100 is also provided with a liquid outlet through hole 120, the liquid outlet through hole 120 is spaced apart from the liquid inlet through hole 110, and the mounting assembly also includes a second A connecting piece 220 and a second sealing piece (not shown in the figure), the second connecting piece 220 is used to connect the liquid outlet pipeline, the second connecting piece 220 is provided with a second through hole 221 for communicating with the liquid outlet pipeline, The second connecting piece 220 is detachably fixed to the flange 100 and makes the second through hole 221 communicate with the liquid outlet through hole 120, so that the liquid outlet pipeline communicates with the liquid outlet through hole 120, and the second seal is arranged on the second Between the connecting piece 220 and the flange 100 .

As shown in Figure 1, the flange 100 is fixed on the clean end of the heat exchanger 300; as shown in Figure 2, Figure 4 and Figure 6, the flange 100 is provided with a liquid inlet through hole 110 and a liquid outlet through hole 120, The liquid inlet through hole 110 is used for entering the heat exchange medium, and the liquid outlet through hole 120 is used for the outflow of the heat exchange medium after exchanging heat with the material.

As shown in Figure 2, the position of the liquid inlet through hole 110 is correspondingly provided with a first connector 210 for connecting the liquid inlet pipeline, and the position of the liquid outlet through hole 120 is correspondingly provided with a second connector 220 for connecting the outlet liquid line. The heat exchange medium enters the heat exchanger 300 through the liquid inlet pipe through the liquid inlet through hole 110 , and the heat exchange medium after heat exchange flows out through the liquid outlet through hole 120 through the liquid outlet pipe.

In one embodiment, please refer to FIG. 1 to FIG. 6 , the setting position of the liquid inlet through hole 110 is higher than the setting position of the liquid outlet through hole 120 , and the first connecting piece 210 is used to connect with the first end of the liquid inlet pipeline. , the first connecting member 210 is inclined relative to the flange 100 so that the second end of the liquid inlet pipeline is higher than the first end.

As shown in FIGS. 4 and 5 , the liquid inlet through hole 110 is located on the upper part of the flange 100 , and the liquid outlet through hole 120 is located on the lower part of the flange 100 ; correspondingly, the first connector 210 is located on the upper part of the flange 100 , and the second connecting member 220 is located at the lower part of the flange 100 . The heat exchange medium enters the heat exchanger 300 from the upper part, and the heat exchange medium flows out from the lower part after heat exchange.

From the perspective shown in Figure 4 and Figure 5, the first connecting piece 210 is inclined relative to the flange 100, and the upper side of the first connecting piece 210 is inclined toward one side of the flange 100, so that the first connection The liquid inlet pipeline connected to the part 210 is inclined, so that the heat exchange medium in the liquid inlet pipeline can flow spontaneously from high to low, so as to ensure that the heat exchange medium in the liquid inlet pipeline will not be stagnant and ensure Improve the cleanliness of the system and reduce the problem of bacterial growth caused by stagnant water in the heat transfer medium.

In one embodiment, please refer to FIG. 2 , FIG. 3 and FIG. 6 , the flange 100 is provided with a fitting groove 130 , the contour of the fitting groove 130 matches the contour of the first connector 210 , and the first connector 210 is matched The slot 130 is fixed to the flange 100 .

As shown in FIG. 2 , FIG. 3 and FIG. 6 , the matching groove 130 is arranged in a roughly triangular shape, and the first connecting member 210 is also arranged in a roughly triangular shape, so that the first connecting member 210 is detachably fixed to the flange 100 through the matching groove 130 .

In one embodiment, please refer to FIG. 3 to FIG. 5 , the first connecting member 210 is arranged in a plate shape, the groove bottom surface of the matching groove 130 is inclined relative to the disk surface of the flange 100 , and the upper part of the groove bottom surface of the matching groove 130 faces The flange 100 is inclined in a direction away from the first connecting member 210 , so that the first connecting member 210 is disposed obliquely relative to the flange 100 .

From the perspective shown in Figure 4, the upper part of the matching groove 130 is inclined to the right, so that the first connecting piece 210 that is adapted to the bottom surface of the matching groove 130 is inclined relative to the flange 100, so as to make the The liquid inlet pipeline connected to the first connecting piece 210 is arranged obliquely. As shown in FIG. The outer surface is inclined relative to the disk surface of the flange 100 .

In one embodiment, please refer to FIG. 4 and FIG. 6 , the liquid inlet through hole 110 is provided through the bottom wall of the matching groove 130, and the flange 100 is also provided with a first installation groove 140, and the first installation groove 140 is located in the matching groove. 130 on the bottom wall and around the periphery of the liquid inlet hole 110; the first seal is a first seal ring that matches the first installation groove 140, and the first seal ring is pressed against the first connector 210 and the flange Between the discs 100 , a part of the first sealing ring is located in the first installation groove 140 .

As shown in Figure 6, the flange 100 is also provided with a first installation groove 140, and the first installation groove 140 is arranged around the periphery of the liquid inlet through hole 110 for installing the first sealing ring, so as to realize the connection between the flange 100 and the second A sealing fit between connectors 210 .

Optionally, as shown in Figure 6, the first installation groove 140 is a circular groove, the liquid inlet through hole 110 is a circular hole, the diameter of the first installation groove 140 is larger than the hole diameter of the liquid inlet through hole 110; and the first sealing The ring is a circular sealing ring suitable for the first installation groove 140 , for example, a circular rubber ring.

In one embodiment, please refer to FIG. 4 and FIG. 6 , the flange 100 is also provided with a second installation groove 150, the second installation groove 150 surrounds the outer circumference of the liquid outlet hole 120, and the second seal is connected with the second The second sealing ring matching the installation groove 150 is pressed between the second connecting member 220 and the flange 100 , and a part of the second sealing ring is located in the second installation groove 150 .

As shown in Figure 4 and Figure 6, the position of the liquid inlet through hole 110 is correspondingly provided with a matching groove 130 to install the first connecting piece 210; Make the surface of the first connecting piece 210 inclined relative to the surface of the flange 100, so that the heat exchange medium in the liquid inlet pipeline can spontaneously flow into the heat exchanger 300, and prevent the heat exchange medium from entering the liquid inlet pipeline. stay inside. However, the position of the liquid outlet through hole 120 is not provided with a groove for installing the second connecting piece 220 , and the second connecting piece 220 does not have to be fixed to the flange 100 through the groove.

As shown in Figure 6, the position of the liquid outlet hole 120 is correspondingly provided with a second installation groove 150, the second installation groove 150 surrounds the outer periphery of the liquid outlet hole 120, and the second sealing ring presses against the second installation groove 150 position, so as to realize the sealing fit between the second connecting member 220 and the flange 100 .

For example, in the embodiment shown in Figure 6, the liquid outlet through hole 120 is a circular hole, the second installation groove 150 is a circular groove, and the diameter of the second installation groove 150 is greater than the hole diameter of the liquid outlet through hole 120; The sealing ring is a circular sealing ring suitable for the second installation groove 150 .

Optionally, the cross section of the first mounting groove 140 and the groove cross section of the second mounting groove 150 can be semicircular or arc-shaped, so as to fit the first sealing ring and the second sealing ring respectively, and no longer repeat.

In one embodiment, the installation assembly further includes a first fixing part for detachably fixing the first connecting part 210 to the flange 100 .

In one embodiment, the installation assembly further includes a second fixing part for detachably fixing the second connecting part 220 to the flange 100 .

As shown in Figure 3, the first connecting member 210 is provided with a plurality of first fixing holes, and the flange 100 is provided with first matching holes corresponding to the first fixing holes one by one, and the first fixing member may be a screw to pass through The first fixing hole and the first matching hole detachably fix the first connecting member 210 to the flange 100 .

Similarly, as shown in FIG. 3 , the second connecting member 220 is provided with a plurality of second fixing holes, and the flange 100 is provided with second matching holes corresponding to the second fixing holes one by one, and the second fixing member can be a screw , so as to detachably fix the second connecting member 220 to the flange 100 through the second fixing hole and the second fitting hole.

In one embodiment, please refer to FIG. 3 and FIG. 7 , the first connecting member 210 is a regular polygonal plate.

In one embodiment, please refer to FIG. 3 , the second connecting member 220 is a regular polygonal plate.

Optionally, the first connecting part 210 and the second connecting part 220 have the same structure, and both the first connecting part 210 and the second connecting part 220 are equilateral triangular plates. With such a setting, there is no need to calibrate and check the front and back as well as the position during installation, the installation is more convenient and convenient, and it is not easy to make installation mistakes.

In one embodiment, please refer to FIG. 2 and FIG. 3 , the flange 100 is a disc, and the flange 100 is used to fix the heat exchanger 300; the liquid inlet through hole 110 and the liquid outlet through hole 120 are round holes .

Another embodiment provides a liquid treatment device, including the flange structure for the heat exchanger 300 described in any one of the above embodiments.

The liquid processing equipment adopts the aforementioned flange structure for the heat exchanger 300, so that the first pipeline of the heat exchange medium and the flange plate 100 can be installed in a non-welding manner, and meet the requirements of assembly accuracy and sealing. , and further cooperate with the heat exchanger 300 to process the liquid.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; may be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediary, and may be an internal communication between two elements or an interactive relationship between two elements, unless otherwise stated Clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiment.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A flange structure for a heat exchanger, characterized in that it comprises: A flange plate, the flange plate is provided with a liquid inlet through hole; The installation assembly includes a first connecting piece and a first sealing piece, the first connecting piece is used to connect the liquid inlet pipeline, and the first connecting piece is provided with a hole for communicating with the liquid inlet pipeline. The first through hole, the first connecting piece is detachably fixed to the flange and communicates the first through hole with the liquid inlet through hole, so that the liquid inlet pipeline and the liquid inlet The through holes communicate with each other, and the first sealing member is arranged between the first connecting member and the flange. 2. The flange structure for heat exchanger according to claim 1, characterized in that, the flange plate is also provided with a liquid outlet through hole, and the liquid outlet through hole is spaced from the liquid inlet through hole Setting, the installation assembly also includes a second connecting piece and a second sealing piece, the second connecting piece is used to connect the liquid outlet pipeline, and the second connecting piece is provided with a seal for communicating with the liquid outlet pipeline The second through hole, the second connecting piece is detachably fixed to the flange and communicates the second through hole with the liquid outlet through hole, so that the liquid outlet pipeline and the liquid outlet The through holes communicate with each other, and the second sealing member is arranged between the second connecting member and the flange. 3. The flange structure for heat exchanger according to claim 2, characterized in that, the setting position of the liquid inlet through hole is higher than the setting position of the liquid outlet through hole, and the first connecting piece Used to connect with the first end of the liquid inlet pipeline, the first connecting piece is arranged obliquely relative to the flange, so that the second end of the liquid inlet pipeline is higher than the first end. 4. The flange structure for a heat exchanger according to claim 3, wherein the flange is provided with a fitting groove, and the contour of the fitting groove matches the contour of the first connecting piece , the first connecting piece is fixed to the flange through the fitting groove. 5. The flange structure for a heat exchanger according to claim 4, wherein the first connecting member is arranged in a plate shape, and the groove bottom surface of the matching groove is inclined relative to the surface of the flange plate The upper part of the groove bottom surface of the matching groove is inclined toward the direction away from the first connecting piece of the flange, so that the first connecting piece is inclined relative to the flange. 6. The flange structure for heat exchanger according to claim 4, characterized in that, the liquid inlet through hole is set through the bottom wall of the matching groove, and the flange plate is also provided with a first installation Groove, the first installation groove is set on the bottom wall of the matching groove and surrounds the outer circumference of the liquid inlet through hole; the first seal is a first seal that matches the first installation groove ring, the first sealing ring is pressed between the first connecting member and the flange, and a part of the first sealing ring is located in the first installation groove; Or/and, the flange is also provided with a second installation groove, the second installation groove surrounds the outer circumference of the liquid outlet through hole, and the second seal is matched with the second installation groove The second sealing ring is pressed between the second connecting member and the flange, and a part of the second sealing ring is located in the second installation groove. 7. The flange structure for a heat exchanger according to any one of claims 2-6, characterized in that, the mounting assembly further comprises a first fixing part, and the first fixing part is used to attach the the first connecting piece is detachably fixed to the flange; Or/and, the installation assembly further includes a second fixing part, and the second fixing part is used for detachably fixing the second connecting part to the flange. 8. The flange structure for heat exchanger according to any one of claims 2-6, characterized in that, the first connecting piece is a regular polygonal plate; or/and, the second connecting piece is regular polygon plate. 9. The flange structure for heat exchanger according to any one of claims 2-6, characterized in that, the flange is a disc, and the flange is used for fixing with the heat exchanger; Both the liquid inlet through hole and the liquid outlet through hole are round holes. 10. A liquid treatment device, characterized by comprising the flange structure for a heat exchanger according to any one of claims 1-9.

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