Double-sealing snap fastener gasket of plate heat exchanger

Abstract

The utility model belongs to the technical field of plate heat exchangers, and particularly relates to a double-seal snap fastener gasket of a plate heat exchanger, which comprises a gasket main body. The clamping hole matched with the connecting part in shape is formed in the heat exchange plate, the clamping grooves are formed in the inner walls of the two sides of the clamping hole, the gasket body is placed on a sealing groove of the heat exchange plate, the pressing rod is pushed through an external tool to drive the movable block to move, and the movable block can move in the sealing groove. When the connecting part is inserted into the corresponding clamping hole, the force on the pressing rod is released, the first spring in the compressed state is reset, the first spring drives the corresponding clamping pin to be clamped with the clamping groove in the clamping hole, and the clamping pin is clamped in the clamping groove in the clamping hole. By means of the sealing gasket with double sealing and excellent performance, the high matching strength of the sealing gasket is achieved, and the sealing performance and the pressure bearing capacity of the plate heat exchanger are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a double-sealing snap-on gasket for a plate heat exchanger. Background Art

[0002] The plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. It is mainly composed of plates, sealing gaskets and supporting frames. The sealing gaskets in the plate heat exchanger are components of the sealed heat exchanger embedded in the plate heat exchanger, which seal the fluid channel and guide the cold and hot fluids to flow alternately into their respective channels. The plate heat exchanger uses rubber gaskets, and the general working pressure is less than 2.5MPa and the working temperature is less than 170℃. There are three ways to fix the sealing gasket of the plate heat exchanger on the plate. One is to use an adhesive to directly stick the sealing gasket in the sealing groove of the plate. This sealing gasket is called a sticky gasket. The second is to set a hook structure around the sealing gasket, and fix the sealing gasket in the sealing groove of the plate through the cooperation of the hook and the periphery of the plate. This sealing gasket is called a hanging gasket. The third is to set a snap button structure on or around the sealing gasket, and fix the sealing gasket in the sealing groove of the plate by pressing. This sealing gasket is called a snap button. The use of snap-on sealing gaskets can make the maintenance of the plate heat exchanger faster, and the replacement of gaskets is convenient and quick, which increases the service life of the gaskets and reduces maintenance costs;

[0003] Currently, the existing sealing gaskets are all single-sealing structures, with only two seals set at the corner holes. Because the single-sealed structure has low assembly strength, it is easy for the sealing gasket to deviate from the sealing groove under high pressure, which will reduce the sealing function and cause fluid leakage, affecting the performance of the plate heat exchanger. Therefore, we propose a double-sealing snap gasket for a plate heat exchanger to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a double-sealing snap-on gasket for a plate heat exchanger, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A double-seal snap-on gasket for a plate heat exchanger comprises a gasket body, wherein the gasket body is provided with a first seal and a second seal, a plurality of connecting ribs are fixedly connected between the first seal and the second seal, the bottom of the connecting rib is fixedly connected with a connecting part, a cavity is opened on the connecting part, a fixing block is fixedly connected to the bottom inner wall of the cavity, fixing rods are welded on both sides of the fixing block, a bayonet is slidably connected on the fixing rod, a first spring is welded between the end of the bayonet and one side of the corresponding fixing block, the first spring is movably sleeved on the corresponding fixing rod, the top of the bayonet is rotatably connected with an obliquely arranged hinged rod, a pressing rod is provided on the connecting rib, the end of the pressing rod extends into the corresponding cavity and is fixedly connected with a moving block, and the bottom of the moving block is hinged to the ends of the corresponding two hinged rods.

[0009] Furthermore, a second spring is welded between the top of the moving block and the top inner wall of the corresponding cavity, and the second spring is movably sleeved on the corresponding pressing rod.

[0010] Furthermore, a through hole is provided on the connecting rib, and the connecting rib is slidably connected to the corresponding pressing rod through the through hole.

[0011] Furthermore, guide holes are provided on inner walls on both sides of the cavity, and the guide holes are slidably connected to corresponding bayonet pins.

[0012] Furthermore, a limiting groove is provided on the bayonet, and the bayonet is slidably connected to the corresponding fixing rod through the limiting groove.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a double-sealing snap-on gasket for a plate heat exchanger, which has the following beneficial effects:

[0015] The utility model processes a card hole that matches the shape of the connecting part on the heat exchange plate, and opens card grooves on the inner walls on both sides of the card hole, and places the gasket body on the sealing groove of the heat exchange plate, and then pushes the pressing rod through an external tool to drive the moving block to move, and the moving block drives the corresponding card pin to slide on the fixed rod through the hinge rod and compress the first spring, and the card pin is stored in the corresponding cavity, and when the connecting part is inserted into the corresponding card hole, the force on the pressing rod is released, and the first spring in the compressed state is reset, and the first spring drives the corresponding card pin to be clamped with the card groove in the card hole, so that the gasket body is fixed on the heat exchange plate, and a sealing gasket with double sealing and superior performance is used to achieve high matching strength of the sealing gasket, thereby improving the sealing performance and pressure bearing capacity of the plate heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection ribs and the connection part of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting part of the utility model.

[0020] In the figure: 1. gasket body; 2. one seal; 3. second seal; 4. connecting rib; 5. connecting part; 6. cavity; 7. fixing block; 8. fixing rod; 9. bayonet; 10. first spring; 11. hinge rod; 12. pressing rod; 13. moving block; 14. second spring; 15. through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1-4As shown, a double-sealed snap-on gasket for a plate heat exchanger proposed in one embodiment of the utility model comprises a gasket body 1, on which a first seal 2 and a second seal 3 are provided, a plurality of connecting ribs 4 are fixedly connected between the first seal 2 and the second seal 3, a connecting portion 5 is fixedly connected to the bottom of the connecting rib 4, a cavity 6 is opened on the connecting portion 5, a fixing block 7 is fixedly connected to the bottom inner wall of the cavity 6, fixing rods 8 are welded to both sides of the fixing block 7, a bayonet 9 is slidably connected to the fixing rod 8, a first spring 10 is welded between the end of the bayonet 9 and one side of the corresponding fixing block 7, the first spring 10 is movably sleeved on the corresponding fixing rod 8, the top of the bayonet 9 is rotatably connected to an obliquely arranged hinged rod 11, a pressing rod 12 is provided on the connecting rib 4, the end of the pressing rod 12 extends into the corresponding cavity 6 and is fixedly connected to a moving block 13, the bottom of the moving block 13 is slidably connected to the corresponding The ends of the two hinged rods 11 are hinged, and a card hole that matches the shape of the connecting part 5 is processed on the heat exchange plate, and card grooves are opened on the inner walls on both sides of the card hole. The gasket body 1 is placed on the sealing groove of the heat exchange plate, and then the pressing rod 12 is pushed by an external tool to drive the moving block 13 to move. The moving block 13 drives the corresponding card pin 9 to slide on the fixed rod 8 through the hinged rod 11 and compresses the first spring 10 to store the card pin 9 into the corresponding cavity 6. When the connecting part 5 is inserted into the corresponding card hole, the force on the pressing rod 12 is released, and the first spring 10 in the compressed state is reset. The first spring 10 drives the corresponding card pin 9 to be clamped with the card groove in the card hole, thereby fixing the gasket body 1 on the heat exchange plate. Through the double-sealed and superior performance sealing gasket, the high matching strength of the sealing gasket is achieved, and the sealing performance and pressure bearing capacity of the plate heat exchanger are improved.

[0024] In some embodiments, a second spring 14 is welded between the top of the moving block 13 and the top inner wall of the corresponding cavity 6, and the second spring 14 is movably mounted on the corresponding pressing rod 12. The second spring 14 plays a resetting role.

[0025] In some embodiments, a through hole 15 is provided on the connecting rib 4, and the connecting rib 4 is slidably connected to the corresponding pressing rod 12 through the through hole 15. The provision of the through hole 15 plays a role of limiting.

[0026] In some embodiments, guide holes are provided on the inner walls on both sides of the cavity 6, and the guide holes are slidably connected to the corresponding bayonet pins 9. The provision of the guide holes serves as a limit.

[0027] In some embodiments, a limiting groove is provided on the bayonet 9, and the bayonet 9 is slidably connected to the corresponding fixing rod 8 through the limiting groove. The setting of the bayonet 9 plays a fixing role.

[0028] Working principle or structural principle, when in use, a card hole that matches the shape of the connecting part 5 is processed on the heat exchange plate, and card grooves are opened on the inner walls on both sides of the card hole. The gasket body 1 is placed on the sealing groove of the heat exchange plate, and then the pressing rod 12 is pushed by an external tool. The pressing rod 12 drives the corresponding moving block 13 to move. The moving block 13 stretches the corresponding second spring 14 during the movement. The moving block 13 squeezes the corresponding hinged rod 11 during the movement. Under the action of the squeezing force, the hinged rod 11 moves and rotates, and the hinged rod 11 drives the corresponding The corresponding bayonet pin 9 slides on the fixing rod 8 and compresses the first spring 10, and the bayonet pin 9 is stored in the corresponding cavity 6. When the connecting part 5 is inserted into the corresponding clamping hole, the force on the pressing rod 12 is released, and the first spring 10 in the compressed state is reset. Under the action of the elastic force of the first spring 10 itself, the first spring 10 drives the corresponding bayonet pin 9 to be clamped with the clamping groove in the clamping hole, thereby fixing the gasket body 1 on the heat exchange plate. Through the double-sealed and superior performance sealing gasket, the high matching strength of the sealing gasket is achieved, and the sealing performance and pressure bearing capacity of the plate heat exchanger are improved.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-sealing snap-on gasket for a plate heat exchanger, comprising a gasket body (1), characterized in that: The gasket body (1) is provided with a first seal (2) and a second seal (3), a plurality of connecting ribs (4) are fixedly connected between the first seal (2) and the second seal (3), a connecting portion (5) is fixedly connected to the bottom of the connecting rib (4), a cavity (6) is provided on the connecting portion (5), a fixing block (7) is fixedly connected to the inner wall of the bottom of the cavity (6), fixing rods (8) are welded on both sides of the fixing block (7), a bayonet (9) is slidably connected to the fixing rod (8), and the bayonet (9) is fixedly connected to the fixing rod (8). A first spring (10) is welded between the end of the locking pin (9) and one side of the corresponding fixed block (7), the first spring (10) is movably sleeved on the corresponding fixed rod (8), the top of the locking pin (9) is rotatably connected to an inclined hinge rod (11), a pressing rod (12) is provided on the connecting rib (4), the end of the pressing rod (12) extends into the corresponding cavity (6) and is fixedly connected to a moving block (13), the bottom of the moving block (13) is hinged to the ends of the two corresponding hinge rods (11).

2. A double-sealing snap-on gasket for a plate heat exchanger according to claim 1, characterized in that: A second spring (14) is welded between the top of the moving block (13) and the top inner wall of the corresponding cavity (6), and the second spring (14) is movably sleeved on the corresponding pressing rod (12).

3. The double-sealing snap-on gasket for a plate heat exchanger according to claim 1, characterized in that: The connecting rib (4) is provided with a through hole (15), and the connecting rib (4) is slidably connected to the corresponding pressing rod (12) through the through hole (15).

4. A double-sealing snap-on gasket for a plate heat exchanger according to claim 1, characterized in that: Guide holes are provided on the inner walls on both sides of the cavity (6), and the guide holes are slidably connected to corresponding bayonet pins (9).

5. The double-sealing snap-on gasket for a plate heat exchanger according to claim 1, characterized in that: The bayonet (9) is provided with a limiting groove, and the bayonet (9) is slidably connected to the corresponding fixing rod (8) via the limiting groove.

Images