Leakage-proof plate heat exchanger

Abstract

The utility model provides a leakproof plate heat exchanger relates to plate heat exchanger field, including: plate heat exchanger body and heat exchange plate, plate heat exchanger body inner side is equipped with heat exchange plate, heat exchange plate front side face and back side face welding is equipped with the locating clamping lug, locating clamping lug left side end welding is equipped with the joining insert piece, the joining insert piece is equipped with the locating clamping lug right side end welding is equipped with the locating clamping lug right side end welding is equipped with the locating clamping lug right side end welding is equipped with the locating clamping lug right side end welding. An inserting groove is formed in the inner side of the positioning clamping lug, an anti-falling inserting plate is inserted into the inserting groove, a stop plate is welded to the front end of the anti-falling inserting plate through a fixing block, a clamping block is welded to the front surface of the stop plate, and a clamping bolt is clamped to the arc surface of the front side of the clamping block. The plate type heat exchanger solves the problems that in the prior art, liquid leakage is caused and the assembly efficiency of the plate type heat exchanger is affected due to the fact that a certain plate piece in the whole clamping process of a plurality of sets of heat exchange plate pieces is not fully pressed through a clamping bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a liquid leakage-proof plate heat exchanger. Background Art

[0002] A plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between the plates, and heat exchange is carried out through the plates. The plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, easy installation and cleaning, wide application, and long service life. After searching, the existing technology (Announcement No.: CN202420494878.4) is a leak-proof plate heat exchanger. The article records that "the utility model is to separate the front and rear ends of the heat exchange plate to prevent leakage. A sealing column and a sealing coupling groove are provided. Under the clamping action of the clamping bolts, the sealing column on the cold heat exchange plate is embedded in the sealing coupling groove on the back of the front hot heat exchange plate to form a seal. Since the sealing column and the sealing coupling groove are connected in a male-female coupling manner and a layer of rubber sealing gasket is affixed to the sealing coupling groove, it can effectively prevent the heat exchange liquid from leaking outward along the gap between the two heat exchange plates, reducing the waste of heat exchange liquid and improving the energy utilization rate of the heat exchanger. However, in the prior art, the clamping bolts do not fully press a certain plate in the overall clamping of multiple groups of heat exchange plates, which will cause leakage and affect the assembly efficiency of the plate heat exchanger. Utility Model Content

[0003] In order to overcome the defects of the existing technology, a leakage-proof plate heat exchanger is now provided to solve the problem in the existing technology that the clamping bolts in the overall clamping of multiple groups of heat exchange plates are not sufficiently tightened, resulting in leakage and affecting the assembly efficiency of the plate heat exchanger.

[0004] To achieve the above object, a plate heat exchanger with anti-leakage liquid is provided, comprising: a plate heat exchanger body and heat exchange plates, wherein the heat exchange plates are installed inside the plate heat exchanger body.

[0005] The front and rear sides of the heat exchange plate are welded with positioning ears, the left end of the positioning ear is welded with a connecting plug, the inner side of the positioning ear is provided with a plug-in slot, an anti-slip plug-in plate is inserted into the plug-in slot, a stop plate is welded with a fixing block at the front end of the anti-slip plug-in plate, a clamping block is welded with the front surface of the stop plate, and a clamping bolt is clamped with the arc surface on the front side of the clamping block.

[0006] Furthermore, a water inlet and a water outlet are provided on the side of the plate heat exchanger body; the water inlet is located at the upper end of the water outlet, and a convex sealing edge is provided on the right side of the heat exchange plate.

[0007] Furthermore, a sealing gasket is attached to the inner end surface of the sealing edge; and the sealing edge is plugged into the groove on the left side of the adjacent heat exchange plate.

[0008] Furthermore, the front and rear ends of the plate heat exchanger body are fixed with clamping bolts through fastening nuts; and the clamping bolts are distributed through the front and rear sides of the heat exchange plates.

[0009] Furthermore, a stop plate is attached to the front surface of the positioning clip ear, and a positioning groove is opened on the surface of the connecting plug; and the positioning groove corresponds to the shape of the anti-dropping plug plate.

[0010] Furthermore, a fixing block is welded to the rear side of the stop plate; and the fixing block passes through and is located inside the positioning clip ear.

[0011] Furthermore, a rubber pad is bonded to the front arc surface of the clamping block; and the rubber pad fits the cylindrical surface of the clamping bolt.

[0012] The beneficial effect of the present invention is that the leakage-proof plate heat exchanger of the present invention utilizes the positioning ears and connecting plugs on the side of the heat exchange plate to plug and assemble multiple groups of plates, and the stop plate is pressed by the penetrating clamping bolts, so that the stop plate plugs the anti-detachment plug plate with the connecting plug in the positioning ear groove, which is convenient for preventing the adjacent plug-in assembled heat exchange plates from separating and moving, ensuring that the fluid channels between the heat exchange plates are tightly sealed, effectively preventing leakage between the plates of the plate heat exchanger, enhancing the plate clamping assembly tightness of the plate heat exchanger, and improving the leakage-proof performance of the plate heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front structural schematic diagram of a liquid leakage-proof plate heat exchanger according to an embodiment of the present utility model.

[0014] Figure 2 For the embodiment of the utility model Figure 1 Schematic diagram of the enlarged structure at point A.

[0015] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a heat exchange plate and a positioning clip according to an embodiment of the present utility model.

[0016] Figure 4 This is a side view schematic diagram of the connection structure of the positioning clip ear and the stop plate according to an embodiment of the present utility model.

[0017] In the figure: 1. Plate heat exchanger body; 11. Water inlet; 12. Water outlet; 2. Heat exchange plate; 21. Sealing edge; 22. Sealing gasket; 3. Clamping bolt; 31. Fastening nut; 4. Positioning clip ear; 41. Connecting plug; 42. Positioning groove; 43. Connecting groove; 5. Stop plate; 51. Snap-in block; 52. Anti-dropping plug; 53. Rubber pad; 54. Fixing block. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a plate heat exchanger that prevents liquid leakage, including: a plate heat exchanger body 1 and a heat exchange plate 2. The heat exchange plate 2 is installed inside the plate heat exchanger body 1.

[0019] The heat exchange plate 2 is welded with positioning ears 4 on the front and rear sides, and a connecting plug 41 is welded on the left end of the positioning ear 4. A plug-in groove 43 is provided on the inner side of the positioning ear 4, and an anti-slip plug 52 is inserted into the plug-in groove 43. A stop plate 5 is welded to the front end of the anti-slip plug 52 through a fixing block 54. A clamping block 51 is welded to the front surface of the stop plate 5, and a clamping bolt 3 is clamped on the arc surface of the front side of the clamping block 51.

[0020] The plate heat exchanger body 1 plugs and assembles multiple groups of plates through the positioning ears 4 and the connecting plugs 41 on the side of the heat exchange plates 2. At the same time, the penetrating clamping bolts 3 press the stop plate 5, so that the stop plate 5 plugs the anti-detachment plug plate 52 into the connecting plug 51 in the groove of the positioning ears 4, which is convenient for preventing the adjacent plug-in assembled heat exchange plates from separating and moving, ensuring that the fluid channels between the heat exchange plates are tightly sealed, effectively preventing leakage between the plates of the plate heat exchanger, enhancing the plate clamping assembly tightness of the plate heat exchanger, and improving the leakage-proof performance of the plate heat exchanger.

[0021] In this embodiment, the plate heat exchanger body 1 is provided with a water inlet 11 and a water outlet 12 on its side. The water inlet 11 is located above the water outlet 12. The heat exchange plates 2 are provided with a protruding sealing edge 21 on their right sides. A sealing gasket 22 is attached to the inner end of the sealing edge 21, which engages with the corresponding grooves on the left side of the adjacent heat exchange plate 2. Clamping bolts 3 are secured to the front and rear ends of the plate heat exchanger body 1 via fastening nuts 31. These clamping bolts 3 extend through the front and rear sides of the heat exchange plates 2.

[0022] As a preferred embodiment, the water inlet 11 and outlet 12 of the plate heat exchanger body 1 serve as conduits for the heat source and heated material. The heat exchange plates 2 engage adjacent heat exchange plates 2 via protruding sealing edges 21, preventing fluid from flowing out of the fluid channels between the plates. Clamping bolts 3 secure the two end plates of the plate heat exchanger body 1, ensuring that the plates do not move or misalign during operation. By applying an appropriate preload, they ensure a tight seal between the plates and prevent fluid leakage. They also hold the stop plate 5 in place, keeping the anti-slip insert 52 in place.

[0023] In this embodiment, the front surface of the positioning clip ear 4 is attached with a stop plate 5 , and the surface of the connecting insert 41 is provided with a positioning groove 42 ; and the positioning groove 42 corresponds to the shape of the anti-dropping insert 52 .

[0024] As a preferred embodiment, the insertion groove 43 of the positioning clamp ear 4 is used to be plugged into the adjacent connecting plug 41, so that the two sets of adjacent heat exchange plates 2 are clamped and fit tightly, avoiding leakage due to loose clamping, and at the same time conveniently and quickly positioning and assembling the heat exchange plates 2, avoiding the need to disassemble and reassemble the heat exchange plates 2 due to loose clamping when installing, thereby reducing the time for reinstallation.

[0025] In this embodiment, a fixing block 54 is welded to the rear side of the stop plate 5 and is positioned inside the positioning clamping ear 4. A rubber pad 53 is bonded to the front arc surface of the clamping block 51 and is in contact with the cylindrical surface of the clamping bolt 3.

[0026] As a preferred embodiment, the stop plate 5 is clamped to the clamping bolt 3 through the clamping block 51, so that the stop plate 5 is pressed tightly against the front surface of the positioning clamp ear 4, so that the anti-slip plate 52 is inserted into the positioning groove 42 of the connecting insert 41, avoiding the adjacent inserted positioning clamp ears 4 and connecting inserts 41 from being separated or shifted, ensuring that the adjacent plates are clamped tightly.

[0027] The liquid-leakage-proof plate heat exchanger of the present invention can effectively solve the problem in the prior art that the clamping bolts do not fully tighten a certain plate in the overall clamping of multiple groups of heat exchange plates, which may cause leakage and affect the assembly efficiency of the plate heat exchanger. It is convenient to prevent the separation and movement of adjacent plug-in assembled heat exchange plates, ensure that the fluid channels between the heat exchange plates are tightly sealed, effectively prevent leakage between the plates of the plate heat exchanger, enhance the plate clamping assembly tightness of the plate heat exchanger, and improve the liquid-leakage-proof performance of the plate heat exchanger. It is suitable for liquid-leakage-proof plate heat exchangers.

Claims

1. A liquid-leakage-proof plate heat exchanger, comprising: A plate heat exchanger body (1) and a heat exchange plate (2), wherein the heat exchange plate (2) is installed inside the plate heat exchanger body (1), and is characterized in that: The front and rear sides of the heat exchange plate (2) are welded with positioning ears (4), the left end of the positioning ear (4) is welded with a connecting plug (41), the inner side of the positioning ear (4) is provided with a plug slot (43), an anti-slip plug plate (52) is inserted into the plug slot (43), the front end of the anti-slip plug plate (52) is welded with a stop plate (5) through a fixing block (54), the front surface of the stop plate (5) is welded with a clamping block (51), and the front arc surface of the clamping block (51) is clamped with a clamping bolt (3).

2. The liquid-leakage-proof plate heat exchanger according to claim 1, characterized in that: The plate heat exchanger body (1) is provided with a water inlet (11) and a water outlet (12) on its side; the water inlet (11) is located at the upper end of the water outlet (12); and the right side of the heat exchange plate (2) is provided with an outwardly convex sealing edge (21).

3. The liquid-leakage-proof plate heat exchanger according to claim 2, characterized in that: The inner end surface of the sealing edge (21) is fitted with a sealing gasket (22); and the sealing edge (21) is correspondingly plugged into the groove on the left side of the adjacent heat exchange plate (2).

4. The liquid-leakage-proof plate heat exchanger according to claim 1, characterized in that: The front and rear ends of the plate heat exchanger body (1) are fixed with clamping bolts (3) via fastening nuts (31); and the clamping bolts (3) are distributed through the front and rear sides of the heat exchange plates (2).

5. The liquid-leakage-proof plate heat exchanger according to claim 1, characterized in that: The front surface of the positioning clip ear (4) is fitted with a stop plate (5), and the surface of the connecting insert (41) is provided with a positioning groove (42); and the positioning groove (42) corresponds in shape to the anti-drop insert (52).

6. The liquid-leakage-proof plate heat exchanger according to claim 1, characterized in that: A fixing block (54) is welded to the rear side of the stop plate (5); and the fixing block (54) passes through and is located inside the positioning clamping ear (4).

7. The liquid-leakage-proof plate heat exchanger according to claim 1, characterized in that: A rubber pad (53) is bonded to the front arc surface of the clamping block (51); and the rubber pad (53) is in contact with the cylindrical surface of the clamping bolt (3).

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