Sealing gasket of plate heat exchanger with novel hanging claw structure and plate heat exchanger

Abstract

The utility model relates to a sealing gasket of a plate heat exchanger with a novel hanging claw structure and the plate heat exchanger. Comprising a gasket body and hanging claw structures, the multiple hanging claw structures are arranged on the gasket body, the gasket body and the hanging claw structures are of an integrated structure, each hanging claw structure comprises an extending part, a connecting part and a hook part, the hanging claw structures extend outwards from the gasket body to form the extending parts, and the extending parts and the hook parts are arranged up and down. The outer ends of the extending part and the hook part are connected through the connecting part, the outer end of the extending part is thicker than the inner end, the inner end of the hook part is thicker than the outer end, and the overall width of the hanging claw structure is consistent. Due to the adoption of the structure, the sealing gasket is applied to the plate heat exchanger, so that the sealing gasket can be firmly and accurately embedded in a sealing groove of a plate.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment, and in particular to a sealing gasket and a plate heat exchanger with a novel claw structure. Background Technology

[0002] Plate heat exchangers are highly efficient and compact heat exchange devices, possessing numerous advantages such as high heat transfer coefficient, low pressure loss, compact structure, and convenient maintenance. Furthermore, with improvements in structure and manufacturing technology, the application of plate heat exchangers is receiving increasing attention. The heat exchange plates of a plate heat exchanger are typically sealed using rubber strips as gaskets. These gaskets are installed within the sealing grooves of the plates, generating a sealing force under the compression of adjacent plates.

[0003] There are two ways to fix the gaskets of a plate heat exchanger to the plate. One way is to directly glue the gasket to the sealing groove of the plate with adhesive. The other way is to fix it to the plate through the fixing connector on the gasket. This type of gasket is also called a non-adhesive gasket. Using non-adhesive gaskets can make the inspection and maintenance of plate heat exchangers faster, and the gasket replacement is convenient and quick, reducing maintenance costs.

[0004] Currently, there are generally two types of non-adhesive gasket structures. One type uses a snap-on design, but this requires a punching die or laser cutting equipment to make holes at the corresponding positions on the heat exchange plate, resulting in a large production investment and poor economic efficiency. The other type uses hanging claws, which hang on the edge of the plate. The hanging claw structure generally has two types: "U" shaped and "T" shaped. These two types of hanging claw structures are simple in structure, but the fixing effect is poor, and the gasket is prone to displacement. If it deviates significantly from the sealing groove, it will affect the performance of the entire heat exchanger.

[0005] With the advancement of production technology, rubber injection molding technology has been applied to the field of gaskets, enabling the production of more complex claw structures. Utility Model Content

[0006] The purpose of this utility model is to provide a sealing gasket and a plate heat exchanger with a novel claw structure. The sealing gasket is provided with a novel claw structure, which can securely fix the sealing gasket on the heat exchange plate and prevent it from falling off.

[0007] The technical solution of this utility model is:

[0008] A sealing gasket for a plate heat exchanger with a novel claw structure includes a gasket body and claw structures. The gasket body is provided with multiple claw structures, and the gasket body and claw structures are an integral structure. Each claw structure is divided into an extension, a connecting part, and a hook part. The claw structure extends outward from the gasket body to form the extension. The extension and the hook parts are arranged vertically. The connecting part connects the outer ends of the extension and the hook parts. The outer end of the extension is thicker than the inner end, and the inner end of the hook part is thicker than the outer end. The overall width of the claw structure is consistent.

[0009] The beneficial effects of this utility model are:

[0010] 1. Due to the above-mentioned structure, the sealing gasket of this application, when applied to a plate heat exchanger, enables the sealing gasket to be firmly and accurately embedded in the sealing groove of the plate.

[0011] 2. The sealing gasket of this application has a hook-shaped claw structure, which strengthens the connection between the gasket body and the plate, improves the positioning accuracy of the gasket, and ensures that the sealing gasket of the plate heat exchanger can perform normally. It also allows for the gasket to be reused multiple times during the maintenance of the plate heat exchanger, thereby reducing the maintenance cost of the plate heat exchanger. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the sealing gasket in this application.

[0014] Figure 2 For this application Figure 1 A magnified view of section I.

[0015] Figure 3 For this application Figure 2 Schematic diagram of section AA in the diagram

[0016] Figure 4 This is a partial enlarged cross-sectional view of the sealing gasket of this application mounted on the plate.

[0017] Figure 5 This is a partial enlarged cross-sectional view of the plate used in conjunction with the sealing gasket of this application.

[0018] Figure label:

[0019] Sealing gasket 1; Gasket body 11; Hanging claw structure 12; Protrusion 121; Connecting part 122; Hook part 123; Barb structure 124; Plate 2; Recessed sealing groove 21; Upper boss surface 22; Recessed folded edge 23; Gap 125. Detailed Implementation

[0020] To address the problems in the background art, this application presents a sealing gasket and a plate heat exchanger with a novel hanging claw structure, which can better fix the sealing gasket to the plate, preventing the sealing gasket from falling off and causing leakage accidents.

[0021] It should be noted that in the description of this application, terms such as "inner", "outer", "inside", "upper", and "lower" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] A plate heat exchanger includes a fixed clamping plate and a movable clamping plate, wherein plates are clamped between the fixed clamping plate and the movable clamping plate, and a sealing gasket is clamped between the plates, wherein the sealing gasket is the sealing gasket described below.

[0024] like Figure 1-3 As shown, 1. A sealing gasket 1 for a plate heat exchanger with a novel claw structure, characterized in that: it includes a gasket body 11 and claw structures 12, wherein the gasket body 11 is provided with multiple claw structures 12, and the gasket body 11 and the claw structures 12 are an integral structure. The claw structure 12 is divided into an extension portion 121, a connecting portion 122, and a hook portion 123. The extension portion 121 is the part of the claw structure 12 that extends outward from the gasket body. The extension portion 121 and the hook portion 123 are arranged vertically. The connecting portion 122 connects the outer ends of the extension portion and the hook portion. The outer end of the extension portion 121 is thicker than the inner end, and the inner end of the hook portion 123 is thicker than the outer end, forming a barb structure 124. The overall width of the claw structure 12 is uniform.

[0025] The outer ring of the sealing gasket body of this application is provided with multiple claw structures. The claw structure is formed into a fishhook shape by an extension, a connecting part and a hook part, and a barb structure 124 is formed at the end of the fishhook shape. It cooperates with the outer edge of the plate to better fix the sealing gasket and prevent displacement and falling off.

[0026] like Figure 4-5 As shown, the plate 2 of the aforementioned plate heat exchanger, from the inside out, consists of a recessed sealing groove 21, an upper raised surface 22, and a recessed folded edge 23. Specifically, the plate has a recessed sealing groove 21 around its perimeter, which extends outward to form an upper raised surface 22, and the upper raised surface 22 extends outward to form a recessed folded edge 23. The recessed sealing groove 21 is fitted into the gasket body 11 of the sealing gasket, and the upper raised surface 22 and the recessed folded edge 23 are positioned within the gap 125 formed between the protruding portion 121 and the hook portion 123 of the hanging claw structure.

[0027] The plate in this application is used in conjunction with a novel sealing gasket, and its structure has been modified accordingly. An upper raised platform and a lower concave folded edge are pressed out on the outer side of the original sealing groove around the plate. These, combined with the fishhook-shaped structure of the sealing gasket, provide better fixation of the gasket. This solves the problems of poor fixing effect and easy gasket displacement in existing "U"-shaped and "T"-shaped hook structures, which can significantly affect the performance of the entire heat exchanger when the gasket deviates severely from the sealing groove.

[0028] Gasket and plate assembly status:

[0029] The sealing gasket 1 is placed in the recessed sealing groove 21 of the plate 2. The sealing gasket body has multiple claw structures on its side. The cross-sectional shape of the claw structure 12 is approximately fishhook-shaped. The upper boss surface and the lower concave folded edge of the plate are fitted into the gap 125 between the protruding part and the hook part of the claw structure, which can clamp the plate and also play a fixing role. At the end of the claw structure 12, there is a barb structure 124 (i.e., the thicker part at the end of the hook part). The barb structure 124 cooperates with the upper boss surface 22 and the lower concave folded edge of the plate to strengthen the fixing role.

[0030] Note: In this application, "upper" and "lower" are relative to the appendix to the specification. Figure 3 , 4 As shown in Figure 5, "up" is upward and "down" is downward.

[0031] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art, inspired by this description, design similar structures and implementations to the above embodiments without departing from the technical essence of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sealing gasket for a plate heat exchanger with a novel claw structure, characterized in that: The device includes a gasket body and a claw structure. The gasket body is provided with multiple claw structures, and the gasket body and the claw structures are an integral structure. The claw structure is divided into an extension part, a connecting part, and a hook part. The claw structure extends outward from the gasket body to form the extension part. The extension part and the hook part are arranged vertically. The connecting part connects the outer ends of the extension part and the hook part. The outer end of the extension part is thicker than the inner end, and the inner end of the hook part is thicker than the outer end. The overall width of the claw structure is consistent.

2. A plate heat exchanger, comprising a fixed clamping plate and a movable clamping plate, wherein plates are clamped between the fixed clamping plate and the movable clamping plate, and a sealing gasket is clamped between the plates, wherein the sealing gasket is the sealing gasket as described in claim 1.

3. A plate heat exchanger according to claim 2, characterized in that: The plate is provided with a recessed sealing groove around its perimeter. The recessed sealing groove extends outward to form an upper convex surface, and the upper convex surface extends outward to form a recessed folded edge. The recessed sealing groove is fitted with the gasket body of the sealing gasket. The upper convex surface and the recessed folded edge are placed in the gap space formed by the protrusion of the claw structure and the hook part.

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