CN218238527U

CN218238527U - Flange sealing structure for heat exchanger and liquid treatment equipment

Info

Publication number: CN218238527U
Application number: CN202221741975.6U
Authority: CN
Inventors: 常季; 李双江; 高帅宏
Original assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Current assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-01-06
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses a flange seal structure and liquid treatment facility for heat exchanger, including the ring flange and sealed the pad, the ring flange is used for fixed with the heat exchanger, the ring flange is equipped with the feed liquor chamber, the feed liquor chamber is used for communicating with each other and inputs heat transfer medium towards the heat exchanger in with the heat exchanger, the ring flange still is equipped with at least one first spacing portion, first spacing portion is located one side towards the heat exchanger of ring flange, sealed the pad is used for establishing between ring flange and heat exchanger, sealed pad be equipped with the first through-hole of feed liquor chamber assorted, so that feed liquor chamber communicates with each other with the heat exchanger, sealed pad is equipped with the spacing portion of at least one second, the spacing portion of second is established in sealed one side towards the ring flange of pad, the spacing portion of second and first spacing portion one-to-one and spacing cooperation. Utilize the spacing cooperation of the spacing portion of second and first spacing portion to mate the sealed pad to the ring flange in advance, then fix with the heat exchanger again to solve because of sealed pad is thin and soft and lead to the inconvenient problem of assembly.

Description

Flange sealing structure for heat exchanger and liquid treatment equipment

Technical Field

The utility model relates to a heat transfer technical field especially relates to a flange seal structure and liquid treatment facility for heat exchanger.

Background

In pharmaceutical, chemical and other industries, materials are generally treated by using a heat exchanger, and a heat exchange medium is introduced into the heat exchanger to exchange heat with the materials flowing through the heat exchanger. One end of the heat exchanger, which is used for the inlet and the outlet of the cleaning medium, is called a cleaning end, and in the actual production process, the requirements on the sealing and the sanitation of the cleaning end are high.

The clean end of the heat exchanger is connected with a pipeline of heat exchange medium by using a flange plate so as to lead the heat exchange medium to enter and flow out, and a sealing gasket is arranged between the flange plate and the heat exchanger for ensuring sealing. However, the gasket is generally a thin and flexible member, and installation and maintenance are inconvenient.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a flange sealing structure for a heat exchanger and a liquid processing apparatus; the flange sealing structure for the heat exchanger is very convenient to install and maintain.

The technical scheme is as follows:

one embodiment provides a flange sealing structure for a heat exchanger, including:

the flange plate is used for being fixed with a heat exchanger, a liquid inlet cavity is formed in the flange plate, the liquid inlet cavity is used for being communicated with the heat exchanger and inputting heat exchange media into the heat exchanger, at least one first limiting part is further arranged on the flange plate, and the first limiting part is located on one side, facing the heat exchanger, of the flange plate;

sealed the pad, sealed pad be used for establishing the ring flange with between the heat exchanger, sealed pad be equipped with the first through-hole of feed liquor chamber assorted, so that the feed liquor chamber with the heat exchanger communicates with each other, sealed pad is equipped with at least one spacing portion of second, the spacing portion of second is established sealed orientation of filling up one side of ring flange, the spacing portion of second with first spacing portion one-to-one and spacing cooperation.

According to the flange sealing structure for the heat exchanger, the heat exchange medium enters the heat exchanger through the liquid inlet cavity through the first through hole, and the sealing gasket is pressed between the flange plate and the heat exchanger so as to meet the sealing requirement between the flange plate and the heat exchanger; because the ring flange is equipped with first spacing portion, sealed the pad and be equipped with the spacing portion of second, utilize the spacing cooperation of the spacing portion of second and first spacing portion to seal the pad and cooperate in advance to the ring flange, then fix with the heat exchanger to solve because of sealed thin and soft problem that leads to the assembly inconvenience of filling up.

The technical solution is further explained as follows:

in one embodiment, the flange plate is further provided with a liquid outlet cavity, and the liquid outlet cavity is used for being communicated with the heat exchanger and outputting heat exchange media subjected to heat exchange in the heat exchanger; the sealing pad is also provided with a second through hole matched with the liquid outlet cavity so as to enable the liquid outlet cavity to be communicated with the heat exchanger;

at least one first spacing portion is arranged between the liquid inlet cavity and the liquid outlet cavity, and at least one second spacing portion is arranged between the first through hole and the second through hole.

In one embodiment, the flange plate is provided with a containing cavity, the opening of the containing cavity faces the heat exchanger, the containing cavity is provided with a separating rib, the separating rib separates the containing cavity into the liquid inlet cavity and the liquid outlet cavity, at least one first limiting part is arranged on the separating rib, and at least one first limiting part is positioned on the periphery of the containing cavity;

the sealed pad is cyclic annular setting, sealed fill up be equipped with separate muscle assorted splice bar, the splice bar will sealed hole that fills up is separated for first through-hole with the second through-hole, at least one the spacing portion of second is established on the splice bar, at least one the spacing portion of second is established sealed on the circumference of filling up.

In one embodiment, the arrangement position of the liquid inlet cavity is higher than that of the liquid outlet cavity;

the flange plate is also provided with a liquid inlet through hole and a liquid outlet through hole, the liquid inlet through hole is communicated with the flange plate and the liquid inlet cavity, and the liquid outlet through hole is communicated with the flange plate and the liquid outlet cavity.

In one embodiment, the partition rib is provided with a flow guide part, one end of the flow guide part is communicated with the liquid inlet cavity, and the other end of the flow guide part is communicated with the liquid outlet cavity, so that the liquid inlet cavity is communicated with the liquid outlet cavity.

In one embodiment, the flow guiding portion is a flow guiding groove, the flow guiding groove is arranged on one side of the separating rib facing the sealing gasket, one end of the flow guiding groove extends to the liquid inlet cavity, and the other end of the flow guiding groove extends to the liquid outlet cavity.

In one embodiment, the separating ribs on two opposite sides of the diversion trench are respectively a first rib and a second rib;

the first rib part is arranged in a gradually decreasing manner in the extending direction towards the diversion trench so as to enable the heat exchange medium to flow into the diversion trench; or/and the second rib part is arranged in a gradually-decreasing manner in the extending direction towards the diversion trench, so that the heat exchange medium flows into the diversion trench.

In one embodiment, the accommodating cavity is a circular cavity, the liquid outlet through hole is a circular hole, the liquid outlet through hole is communicated with the bottom of the accommodating cavity, and the contour of the hole wall of the liquid outlet through hole is tangential to the contour of the cavity wall of the accommodating cavity.

In one embodiment, the hole wall profile of the first through hole is coincident with the cavity wall profile of the liquid inlet cavity; the hole wall profile of the second through hole is superposed with the cavity wall profile of the liquid outlet cavity;

or/and the first limiting part is a limiting groove formed in the flange plate, and the second limiting part is a limiting column formed in the sealing gasket.

Another embodiment provides a liquid treatment apparatus comprising a flange seal arrangement for a heat exchanger as described in any one of the above claims.

Above-mentioned liquid treatment equipment adopts aforementioned a flange seal structure for the heat exchanger, when satisfying sealed requirement, also makes the assembly of sealed pad very convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Furthermore, the drawings are not drawn to scale with 1.

Fig. 1 is an assembly schematic diagram of a flange sealing structure for a heat exchanger and the heat exchanger in the embodiment of the present invention;

FIG. 2 is an exploded view of the flange, gasket, and heat exchanger of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the flange and gasket assembly of the embodiment of FIG. 1;

FIG. 4 is an exploded view of the flange and gasket of the embodiment of FIG. 3;

FIG. 5 is a schematic view of the overall structure of the flange plate in the embodiment of FIG. 3;

FIG. 6 is a schematic view showing the overall structure of the gasket in the embodiment of FIG. 3;

FIG. 7 is a side view of the overall structure of the gasket of the embodiment of FIG. 3.

Reference is made to the accompanying drawings in which:

100. a flange plate; 110. a liquid inlet cavity; 120. a liquid outlet cavity; 130. a liquid inlet through hole; 140. a liquid outlet through hole; 150. separating ribs; 151. a first rib portion; 152. a second rib portion; 153. a flow guide part; 160. a first limiting part; 200. a gasket; 210. a first through hole; 220. a second through hole; 230. connecting ribs; 240. a second limiting part; 300. a heat exchanger; 310. an end flange.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

in order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

Referring to fig. 1 to 6, an embodiment provides a flange sealing structure for a heat exchanger 300, which includes a flange 100 and a gasket 200, where the gasket 200 is disposed between the flange 100 and the heat exchanger 300 to achieve a sealing fit between the flange 100 and the heat exchanger 300. Wherein:

as shown in fig. 1 to 3, the flange 100 is used for fixing with a heat exchanger 300, the flange 100 is provided with a liquid inlet chamber 110, the liquid inlet chamber 110 is used for communicating with the heat exchanger 300 and inputting a heat exchange medium into the heat exchanger 300, the flange 100 is further provided with at least one first limiting portion 160, and the first limiting portion 160 is located on one side of the flange 100 facing the heat exchanger 300.

In the embodiment shown in fig. 2, the clean end of the heat exchanger 300 has an end flange 310, the flange 100 is fixed to the end flange 310 by means of bolts, and the gasket 200 is interposed between the flange 100 and the end flange 310.

As shown in fig. 3 to 6, the gasket 200 is disposed between the flange plate 100 and the heat exchanger 300, the gasket 200 is provided with a first through hole 210 matching with the liquid inlet chamber 110, so that the liquid inlet chamber 110 is communicated with the heat exchanger 300, the gasket 200 is provided with at least one second limiting portion 240, the second limiting portion 240 is disposed on one side of the gasket 200 facing the flange plate 100, and the second limiting portions 240 correspond to the first limiting portions 160 one by one and are in limiting fit with the first limiting portions 160.

According to the flange sealing structure for the heat exchanger 300, a heat exchange medium enters the heat exchanger 300 through the liquid inlet cavity 110 via the first through hole 210, and the sealing gasket 200 is pressed between the flange plate 100 and the heat exchanger 300 so as to meet the sealing requirement between the flange plate 100 and the heat exchanger 300; because the flange plate 100 is provided with the first limiting part 160, the sealing gasket 200 is provided with the second limiting part 240, the sealing gasket 200 is matched on the flange plate 100 in advance by utilizing the limiting matching of the second limiting part 240 and the first limiting part 160, and then is fixed with the heat exchanger 300, so that the problem of inconvenient assembly caused by the thinness and softness of the sealing gasket 200 is solved.

As shown in fig. 3, the first through hole 210 of the sealing gasket 200 is adapted to the liquid inlet cavity 110 of the flange plate 100, so that the heat exchange medium in the liquid inlet cavity 110 can further flow into the heat exchanger 300 through the first through hole 210; as shown in fig. 5, the flange plate 100 is provided with a plurality of first limiting portions 160; as shown in fig. 6 and 7, the gasket 200 is provided with a plurality of second stoppers 240; when the sealing gasket 200 and the flange plate 100 are assembled, the sealing gasket 200 can be prepared to be installed on the flange plate 100 through the limiting matching of the second limiting part 240 and the first limiting part 160, on one hand, the sealing gasket 200 is convenient to be matched with the flange plate 100, so that the sealing gasket 200 and the flange plate 100 are prevented from being installed in a staggered mode, on the other hand, the sealing gasket 200 is not difficult to assemble due to the fact that the sealing gasket 200 is soft, and therefore the assembling operation is greatly facilitated.

In one embodiment, referring to fig. 4 to 6, the flange 100 is further provided with a liquid outlet cavity 120, and the liquid outlet cavity 120 is used for communicating with the heat exchanger 300 and outputting a heat exchange medium after heat exchange in the heat exchanger 300; the gasket 200 is further provided with a second through hole 220 matching with the liquid outlet cavity 120, so that the liquid outlet cavity 120 is communicated with the heat exchanger 300.

As shown in fig. 1 to 3, the inlet and outlet of the heat exchange medium are located at the same end, i.e., clean end, of the heat exchanger 300. As shown in fig. 5, the liquid inlet chamber 110 and the liquid outlet chamber 120 are both disposed on the flange 100, and a space is provided between the liquid inlet chamber 110 and the liquid outlet chamber 120; correspondingly, as shown in fig. 6, the gasket 200 is provided with a first through hole 210 and a second through hole 220, the first through hole 210 is matched with the liquid inlet cavity 110, and the second through hole 220 is matched with the liquid outlet cavity 120.

In one embodiment, referring to fig. 5 and 6, at least one first position-limiting portion 160 is disposed between the inlet chamber 110 and the outlet chamber 120, and at least one second position-limiting portion 240 is disposed between the first through hole 210 and the second through hole 220.

As shown in fig. 5, two first limiting portions 160 are disposed between the liquid inlet chamber 110 and the liquid outlet chamber 120, and the two first limiting portions 160 are disposed at intervals; as shown in fig. 6, two second position-limiting portions 240 are disposed between the first through hole 210 and the second through hole 220 to correspond to the first position-limiting portions 160 one by one.

In one embodiment, referring to fig. 4, the flange plate 100 is provided with a containing cavity, an opening of the containing cavity faces the heat exchanger 300, the containing cavity is provided with a separating rib 150, the containing cavity is separated into the liquid inlet cavity 110 and the liquid outlet cavity 120 by the separating rib 150, at least one first limiting portion 160 is arranged on the separating rib 150, and at least one first limiting portion 160 is located at the periphery of the containing cavity.

As shown in fig. 4, a containing cavity is disposed on a side of the flange 100 facing the heat exchanger 300 (or a side facing the gasket 200), a partition rib 150 is disposed in a middle portion of the containing cavity, and the partition rib 150 partitions a space of the containing cavity into two parts, one part is the liquid inlet cavity 110 and the other part is the liquid outlet cavity 120. As shown in fig. 5, two first limiting portions 160 are disposed on the partition rib 150, and two first limiting portions 160 are disposed on the periphery of the accommodating cavity.

As shown in fig. 6, the sealing gasket 200 is annularly disposed, a connecting rib 230 matching with the separating rib 150 is disposed in the sealing gasket 200, the connecting rib 230 separates the inner hole of the sealing gasket 200 into a first through hole 210 and a second through hole 220, at least one second limiting portion 240 is disposed on the connecting rib 230, and at least one second limiting portion 240 is disposed on the circumference of the sealing gasket 200.

As shown in fig. 4 and 6, the sealing gasket 200 is a substantially circular ring-shaped sealing ring, a connecting rib 230 is disposed in the middle of the sealing ring, the connecting rib 230 divides an inner hole of the sealing ring into a first through hole 210 and a second through hole 220, the first through hole 210 is adapted to the liquid inlet cavity 110, and the second through hole 220 is adapted to the liquid outlet cavity 120. As shown in fig. 6, two second limiting portions 240 are disposed on the connecting rib 230 to correspond to the two first limiting portions 160 on the separating rib 150 one by one; meanwhile, two second limiting parts 240 are further arranged on the circumference of the sealing ring, so that the two second limiting parts 240 on the periphery of the accommodating cavity correspond to one another.

In one embodiment, referring to fig. 5, the liquid inlet chamber 110 is disposed at a position higher than the liquid outlet chamber 120.

As shown in fig. 5, the liquid inlet chamber 110 is located at the upper portion of the flange plate 100, and the liquid outlet chamber 120 is located at the lower portion of the flange plate 100, so that the heat exchange medium enters the heat exchanger 300 from the upper portion, and the heat exchange medium flows out of the heat exchanger 300 from the lower portion.

In one embodiment, referring to fig. 4 and 5, the flange 100 further has a liquid inlet hole 130 and a liquid outlet hole 140, the liquid inlet hole 130 is disposed through the flange 100 and communicated with the liquid inlet chamber 110, and the liquid outlet hole 140 is disposed through the flange 100 and communicated with the liquid outlet chamber 120.

As shown in fig. 4 and 5, the liquid inlet through hole 130 is located at the upper portion of the flange 100 and is disposed through the flange 100, and the liquid inlet through hole 130 is located in the area of the liquid inlet cavity 110, so that the liquid inlet through hole 130 is communicated with the liquid inlet cavity 110; the liquid outlet hole 140 is located at the lower part of the flange plate 100 and arranged to penetrate through the flange plate 100, and the position of the liquid outlet hole 140 is located in the area of the liquid outlet cavity 120.

In one embodiment, referring to fig. 4 and 5, the partition rib 150 is provided with a flow guiding portion 153, one end of the flow guiding portion 153 is communicated with the liquid inlet cavity 110, and the other end of the flow guiding portion 153 is communicated with the liquid outlet cavity 120, so that the liquid inlet cavity 110 is communicated with the liquid outlet cavity 120.

As shown in fig. 4 and 5, a flow guide portion 153 is disposed in the middle of the partition rib 150, and the flow guide portion 153 is used for allowing the heat exchange medium in the liquid inlet cavity 110 to flow into the liquid outlet cavity 120. Because of the setting position that the setting of feed liquor chamber 110 is located to be higher than play liquid chamber 120, consequently, feed liquor chamber 110 is located the top of going out liquid chamber 120, when shutting down the maintenance, the heat transfer medium in feed liquor chamber 110 can further get into out in the liquid chamber 120 through water conservancy diversion portion 153 and discharge, avoids being detained heat transfer medium in feed liquor chamber 110 and leads to the bacterial growing scheduling problem, ensures the cleanliness factor of system.

For example, in the embodiment shown in fig. 4 and fig. 5, the liquid inlet chamber 110 is located right above the liquid outlet chamber 120, and the flow guiding portion 153 is longitudinally arranged and communicated with the liquid inlet chamber 110 and the liquid outlet chamber 120, so that the heat exchange medium in the liquid inlet chamber 110 can spontaneously flow into the liquid outlet chamber 120 at the lower part.

It can be understood that:

in the working process, almost all the heat exchange medium in the liquid inlet cavity 110 enters the heat exchanger 300 for heat exchange, and only a small part of the heat exchange medium enters the liquid outlet cavity 120 through the flow guide part 153, so that the heat exchange capacity of the heat exchanger 300 is not influenced; in the process of shutdown maintenance, no new heat exchange medium enters the liquid inlet cavity 110, so that the heat exchange medium retained in the liquid inlet cavity 110 enters the liquid outlet cavity 120 through the flow guide portion 153, so as to evacuate the heat exchange medium in the liquid inlet cavity 110, which is not described again.

In one embodiment, referring to fig. 4 and 5, the flow guiding portion 153 is a flow guiding groove, the flow guiding groove is disposed on a side of the partition rib 150 facing the gasket 200, one end of the flow guiding groove extends to the liquid inlet cavity 110, and the other end of the flow guiding groove extends to the liquid outlet cavity 120.

As shown in fig. 5, the guiding groove is disposed on one side of the separating rib 150 facing the gasket 200, the guiding groove extends vertically, and the opening of the guiding groove faces the gasket 200. When the gasket 200 is engaged with the flange plate 100, the walls of the channels engage the surface of the gasket 200 to form channels.

As shown in fig. 5, the partition ribs 150 are substantially horizontally disposed, so that the heat exchange medium in the liquid inlet chamber 110 can be substantially completely discharged through the guiding grooves.

In other embodiments, the flow guiding portion 153 may also be a flow guiding cavity penetrating through the partition rib 150, so as to communicate the liquid inlet cavity 110 with the liquid outlet cavity 120, which is not described herein again.

In one embodiment, referring to fig. 4 and 5, the separating ribs 150 on two opposite sides of the flow guide groove are a first rib 151 and a second rib 152, respectively.

As shown in fig. 5, the guiding groove is disposed in the middle of the partition rib 150, the partition rib 150 on the left side of the guiding groove is a first rib portion 151, and the partition rib 150 on the right side of the guiding groove is a second rib portion 152.

In one embodiment, referring to fig. 4 and 5, the first ribs 151 are gradually decreased in the extending direction of the guiding groove to allow the heat exchange medium to flow into the guiding groove.

In one embodiment, referring to fig. 4 and 5, the second rib 152 is gradually decreased toward the flow guiding groove, so that the heat exchange medium flows into the flow guiding groove.

In the embodiment shown in fig. 5, the lower surfaces of the first ribs 151 and the second ribs 152 extend horizontally; the upper surface of the first rib 151 gradually decreases and extends from left to right, for example, extends in an inclined plane, so that the first rib 151 is arranged in a high-right position, and the rightmost side is the position of the flow guide groove, and the heat exchange medium on the left side of the liquid inlet cavity 110 can flow along the first rib 151 toward the right and enter the flow guide groove; similarly, the upper surface of the second rib portion 152 gradually decreases and extends from right to left, for example, extends in an inclined plane, so that the second rib portion 152 is disposed in a high-right and low-left manner, and the leftmost side is the position of the diversion trench, and the heat exchange medium on the right side of the liquid inlet chamber 110 can flow along the second rib portion 152 spontaneously toward the left side and enter the diversion trench.

In one embodiment, referring to fig. 3 to 5, the accommodating cavity is a circular cavity, the liquid outlet hole 140 is a circular hole, the liquid outlet hole 140 is communicated with the bottom of the accommodating cavity, and the wall contour of the liquid outlet hole 140 is tangential to the wall contour of the accommodating cavity.

In the view shown in fig. 5, the accommodating cavity of the flange plate 100 is a circular cavity, and the partition rib 150 divides the circular cavity into an upper semicircular liquid inlet cavity 110 and a lower semicircular liquid outlet cavity 120.

Alternatively, as shown in fig. 5, the liquid inlet through hole 130 is a circular hole, the liquid inlet through hole 130 is opened at the upper part of the liquid inlet cavity 110, and the wall contour of the liquid inlet through hole 130 is tangential to the wall contour of the liquid inlet cavity 110.

Optionally, as shown in fig. 5, the liquid outlet hole 140 is a circular hole, the liquid outlet hole 140 is opened at the bottom of the liquid outlet cavity 120, and a hole wall profile of the liquid outlet hole 140 is tangent to a cavity wall profile of the liquid outlet cavity 120.

Since the liquid outlet cavity 120 is a lower semicircular cavity, the lower portion or the bottom of the liquid outlet cavity 120 is the lowest portion of the liquid outlet cavity 120, and the liquid outlet through hole 140 is formed in the lowest portion of the liquid outlet cavity 120, so that the heat exchange medium in the liquid outlet cavity 120 can be emptied, the heat exchange medium is prevented from remaining in the liquid outlet cavity 120, and the problems of bacteria breeding and the like are avoided.

In one embodiment, referring to fig. 3 and 4, the hole wall profile of the first through hole 210 coincides with the cavity wall profile of the liquid inlet cavity 110; the hole wall profile of the second through hole 220 coincides with the cavity wall profile of the liquid outlet cavity 120.

In the embodiment shown in fig. 3 and 4, the first through hole 210 and the second through hole 220 are formed in the gasket 200, the size of the first through hole 210 is completely the same as the size of the cross section of the liquid inlet cavity 110, and the size of the second through hole 220 is completely the same as the size of the cross section of the liquid outlet cavity 120, so that the hole wall contour of the gasket 200 is exactly overlapped with the cavity wall contour of the flange 100, and the problems of bacterial growth and the like caused by the residual heat exchange medium in the gap between the gasket 200 and the flange 100 in the inflow and outflow processes are avoided.

In one embodiment, referring to fig. 4 to 7, the first position-limiting portion 160 is a position-limiting groove formed on the flange 100, and the second position-limiting portion 240 is a position-limiting post formed on the gasket 200.

In the embodiment shown in fig. 5, the first position-limiting portion 160 is a position-limiting groove formed on the flange 100, and the position-limiting groove may be a circular groove; in the embodiment shown in fig. 6 and 7, the second position-limiting portion 240 is a position-limiting post disposed on the sealing gasket 200, and the position-limiting post is protruded toward one side of the flange plate 100 to be in position-limiting fit with the position-limiting groove, so as to realize self-positioning and self-sealing for easy assembly and maintenance.

The gasket 200 is thin and has a positioning post disposed thereon to engage with the positioning groove of the flange 100. For example, the restraining posts may be integral with the gasket 200.

In one embodiment, the gasket 200 is made of teflon or expanded tetrafluoroethylene.

Another embodiment provides a liquid treatment apparatus comprising a flange seal arrangement for a heat exchanger 300 as described in any of the above embodiments.

The liquid treatment equipment adopts the flange sealing structure for the heat exchanger 300, and the sealing requirement is met, and meanwhile, the sealing gasket 200 is very convenient to assemble.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. 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 the like are for purposes of illustration only and do not denote a single embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A flange seal structure for a heat exchanger, comprising:

2. The flange sealing structure for the heat exchanger according to claim 1, wherein the flange plate is further provided with a liquid outlet cavity, and the liquid outlet cavity is used for being communicated with the heat exchanger and outputting a heat exchange medium after heat exchange in the heat exchanger; the sealing pad is also provided with a second through hole matched with the liquid outlet cavity so as to enable the liquid outlet cavity to be communicated with the heat exchanger;

3. The flange sealing structure for the heat exchanger according to claim 2, wherein the flange plate is provided with a containing cavity, the containing cavity is opened towards the heat exchanger, the containing cavity is provided with a separating rib, the separating rib separates the containing cavity into the liquid inlet cavity and the liquid outlet cavity, at least one first limiting part is arranged on the separating rib, and at least one first limiting part is positioned at the periphery of the containing cavity;

4. A flange sealing structure for a heat exchanger according to claim 3, wherein the liquid inlet chamber is arranged at a position higher than the liquid outlet chamber;

5. A flange sealing structure for a heat exchanger according to claim 4, wherein the partitioning ribs are provided with a flow guide portion, one end of the flow guide portion is communicated with the liquid inlet cavity, and the other end of the flow guide portion is communicated with the liquid outlet cavity, so that the liquid inlet cavity is communicated with the liquid outlet cavity.

6. A flange seal structure for a heat exchanger according to claim 5, characterized in that the flow guide portion is a flow guide groove, the flow guide groove is provided on a side of the partitioning rib facing the sealing gasket, one end of the flow guide groove extends to the liquid inlet cavity, and the other end of the flow guide groove extends to the liquid outlet cavity.

7. A flange sealing structure for a heat exchanger according to claim 6, wherein the partitioning ribs on opposite sides of the baffle groove are a first rib and a second rib, respectively;

the first rib part is arranged in a gradually-decreasing manner in the extending direction towards the flow guide groove so that the heat exchange medium flows into the flow guide groove; or/and the second rib part is arranged in a gradually-decreasing manner in the extending direction towards the diversion trench, so that the heat exchange medium flows into the diversion trench.

8. A flange sealing structure for a heat exchanger according to claim 4, characterized in that the accommodating cavity is a circular cavity, the liquid outlet hole is a circular hole, the liquid outlet hole is communicated with the bottom of the accommodating cavity, and the wall contour of the liquid outlet hole is tangential to the wall contour of the accommodating cavity.

9. The flange sealing structure for the heat exchanger according to any one of claims 2 to 8, wherein the hole wall profile of the first through hole coincides with the cavity wall profile of the liquid inlet cavity; the hole wall profile of the second through hole is superposed with the cavity wall profile of the liquid outlet cavity;

and/or, the first limiting part is a limiting groove formed in the flange plate, and the second limiting part is a limiting column formed in the sealing gasket.

10. A liquid treatment apparatus comprising a flange seal structure for a heat exchanger according to any one of claims 1 to 9.