Plate heat exchanger capable of preventing inner leakage

Abstract

The utility model discloses a plate heat exchanger capable of preventing inner leakage, which belongs to the technical field of heat exchange equipment and comprises a rear end plate and a front end plate, a plurality of heat exchange plates are arranged between the rear end plate and the front end plate, a sealing ring is arranged between every two adjacent heat exchange plates, four fastening bolts are fixedly mounted on the front side of the rear end plate, and the fastening bolts are fixedly mounted on the front side of the rear end plate. The front end of the outer side of the fastening bolt is in threaded connection with a fastening nut, the fastening nut movably abuts against the front side of the front end plate, and a positioning mechanism used for fixing the fastening nut is arranged on the front side of the front end plate. And the positioning mechanism comprises a rotating frame and two transverse plates, positioning frames are fixedly installed at the two ends of each transverse plate, the positioning frames are movably connected to the outer sides of the corresponding fastening nuts in a sleeving mode, and arc-shaped connecting rods are rotationally installed on the front sides of the transverse plates. By means of the fastening nut, the fastening bolt and the positioning mechanism, stable sealing of the plate heat exchanger can be achieved, internal leakage is avoided, and the plate heat exchanger is convenient to disassemble and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange equipment technical field especially relates to a prevent internal leakage's plate heat exchanger. BACKGROUND

[0002] The heat exchanger is the equipment that the partial heat of hot fluid is delivered to cold fluid, and its purpose is to make the temperature of hot fluid can reach the corresponding index, thereby satisfying the need of various process conditions, is widely used in chemical industry and food and many other industrial production fields, and the plate heat exchanger is one of the multiple kinds of heat exchangers, compared with other types of heat exchangers, it has the advantages of high heat efficiency, small heat loss and compact structure, and is one of the main equipment to improve energy utilization rate.

[0003] The conventional plate heat exchanger is limited due to the structure design, the sealing gasket is not connected closely between each other, there is the risk of internal leakage, which not only affects the heat exchange efficiency, but also can cause production interruption and environmental pollution, therefore we propose a kind of prevent internal leakage's plate heat exchanger to solve this problem. UTILITY MODEL CONTENT

[0004] The utility model is to provide a kind of prevent internal leakage's plate heat exchanger to solve the problems raised in the above background.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of prevent internal leakage's plate heat exchanger, it include: rear end plate and front end plate, be provided with multiple heat exchange plates between the rear end plate and front end plate, be provided with sealing ring between the two adjacent heat exchange plates, the front side of the rear end plate is fixedly installed with four fastening bolts, the outside front end of the fastening bolt is threadedly connected with fastening nut, the fastening nut is movably abutted on the front side of front end plate, the front side of the front end plate is provided with the positioning mechanism for fixing fastening nut;

[0007] The positioning mechanism includes: rotating frame and two cross plates, the both ends of the cross plate are fixedly installed with positioning frame, the positioning frame is movably sleeved on the outside of corresponding fastening nut, the front side of the cross plate is rotatably installed with arc link, the other end of the arc link is rotatably connected with rotating frame.

[0008] Preferably, the front side of the front end plate is fixedly installed with fixed shaft and guide rail, the rotating frame is rotatably sleeved on the outside of the fixed shaft, and the cross plate is slidably sleeved on the outside of the guide rail.

[0009] Preferably, the front side of the rotating frame is threadedly connected with positioning bolt, and the front side of the front end plate is provided with slot, and the positioning bolt is movably inserted into the slot.

[0010] Preferably, the front side of the rotating frame is fixedly provided with two round rods, two arc-shaped connecting rods are rotatably arranged on the outer sides of the corresponding round rods, one side of the rotating frame is fixedly provided with a connecting spring, the other end of the connecting spring is fixedly provided with a baffle, and the baffle is fixedly arranged on the front side of the front end plate.

[0011] Preferably, the front side of the front end plate is communicated with a hot water inlet pipe, a hot water outlet pipe, a cold water inlet pipe and a cold water outlet pipe, and flanges are arranged on the outer sides of the hot water inlet pipe, the hot water outlet pipe, the cold water inlet pipe and the cold water outlet pipe.

[0012] Preferably, the front side of the rear end plate is fixedly provided with an upper guide plate and a lower guide plate, and the front end plate and the plurality of heat exchange plates are slidably sleeved on the outer sides of the upper guide plate and the lower guide plate.

[0013] Preferably, the front side of the rear end plate is fixedly provided with two side frames, and the front end plate and the plurality of heat exchange plates are slidably sleeved on the outer sides of the side frames.

[0014] In the utility model, the one side of rotating positioning bolt is rotated and moves forward, and is separated from the slot, then the rotating frame is rotated clockwise to drive the two round rods to make circular motion and stretch the connecting spring, the round rods drive the two horizontal plates to approach each other and drive the corresponding positioning frames to separate from the outer side of the fastening nut, then the fastening nut is separated from the fastening bolt, then the front end plate and the heat exchange plate are fixed, so that the heat exchange plate is disassembled conveniently.

[0015] In the utility model, the plurality of heat exchange plates are sequentially arranged on the front side of the rear end plate, the sealing rings are arranged between the adjacent two heat exchange plates, then the front end plate is arranged between the upper guide plate and the lower guide plate and is sleeved on the outer side of the fastening bolt, then the fastening nut is sleeved on the outer side of the fastening bolt and is tightened, so that the heat exchange plate is tightly abutted with the sealing ring through the extrusion of the front end plate and the rear end plate, the sealing is realized, then the rotating frame is reset under the elastic force of the connecting spring and drives the two horizontal plates and the four positioning frames to reset, the fastening nut is fixed, the fastening nut is prevented from loosening, then the positioning bolt is reversely rotated to be inserted into the slot, the rotating frame is fixed, so that the sealing property of the heat exchange plate is guaranteed.

[0016] The utility model discloses a structure design is reasonable, and through the fastening nut, the fastening bolt and the positioning mechanism that set up, can realize the stable sealing of the plate heat exchanger, avoids the internal leakage, and convenient disassembly and maintenance. ACCURACY OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the plate heat exchanger of the utility model;

[0018] Figure 2 A sectional view structure schematic diagram of the plate heat exchanger of the utility model for preventing internal leakage is provided.

[0019] Figure 3 A three-dimensional structure schematic diagram of the heat exchange plate and the sealing ring of the utility model is provided.

[0020] Figure 4 A three-dimensional structure schematic diagram of the positioning mechanism of the utility model is provided.

[0021] Figure 5 A Figure 4 partial enlarged view in the figure.

[0022] In the figure: 1, rear end plate; 101, upper guide plate; 102, lower guide plate; 103, side frame; 2, front end plate; 201, hot water inlet pipe; 202, hot water outlet pipe; 203, cold water inlet pipe; 204, cold water outlet pipe; 3, heat exchange plate; 4, sealing ring; 5, fastening bolt; 6, fastening nut; 7, positioning frame; 8, cross plate; 9, guide rail; 10, arc-shaped connecting rod; 11, round rod; 12, fixed shaft; 13, rotating frame; 14, positioning bolt; 15, connecting spring; 16, baffle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] Referring to Figures 1-5 , a plate heat exchanger for preventing internal leakage, comprising: a rear end plate 1 and a front end plate 2, a plurality of heat exchange plates 3 are arranged between the rear end plate 1 and the front end plate 2, a sealing ring 4 is arranged between two adjacent heat exchange plates 3, four fastening bolts 5 are fixedly installed on the front side of the rear end plate 1, fastening nuts 6 are threadedly connected to the outer side of the front end of the fastening bolts 5, the fastening nuts 6 are movably abutted on the front side of the front end plate 2, and a positioning mechanism for fixing the fastening nuts 6 is arranged on the front side of the front end plate 2;

[0025] The positioning mechanism comprises: a rotating frame 13 and two cross plates 8, the two ends of the cross plate 8 are fixedly installed with positioning frames 7, the positioning frames 7 are movably sleeved on the outer side of the corresponding fastening nuts 6, the front side of the cross plate 8 is rotatably installed with an arc-shaped connecting rod 10, and the other end of the arc-shaped connecting rod 10 is rotatably connected with the rotating frame 13.

[0026] In the embodiment, the front side of the front end plate 2 is fixedly installed with a fixed shaft 12 and a guide rail 9, the rotating frame 13 is rotatably sleeved on the outer side of the fixed shaft 12, and the cross plate 8 is slidably sleeved on the outer side of the guide rail 9.

[0027] The front side of the rotating frame 13 is threadedly connected with a positioning bolt 14, the front side of the front end plate 2 is provided with a slot, the positioning bolt 14 is movably inserted into the slot, the front side of the front end plate 2 is provided with four insertion holes, and the positioning bolt 14 is movably inserted into the corresponding insertion hole.

[0028] In the embodiment, the front side of the rotating frame 13 is fixedly installed with two round rods 11, the two arc-shaped connecting rods 10 are rotatably installed on the outer sides of the corresponding round rods 11, one side of the rotating frame 13 is fixedly installed with a connecting spring 15, the other end of the connecting spring 15 is fixedly installed with a baffle 16, and the baffle 16 is fixedly installed on the front side of the front end plate 2.

[0029] In the embodiment, the front side of the front end plate 2 is communicated with a hot water inlet pipe 201, a hot water outlet pipe 202, a cold water inlet pipe 203 and a cold water outlet pipe 204, and the outer sides of the hot water inlet pipe 201, the hot water outlet pipe 202, the cold water inlet pipe 203 and the cold water outlet pipe 204 are provided with flanges to facilitate pipe connection.

[0030] In the embodiment, the front side of the rear end plate 1 is fixedly installed with an upper guide plate 101 and a lower guide plate 102, the front end plate 2 and the plurality of heat exchange plates 3 are movably sleeved on the outer sides of the upper guide plate 101 and the lower guide plate 102, so as to guide the front end plate 2 and the plurality of heat exchange plates 3, the front side of the rear end plate 1 is fixedly installed with two side frames 103, and the front end plate 2 and the plurality of heat exchange plates 3 are movably sleeved on the outer sides of the side frames 103, so as to further guide the front end plate 2 and the plurality of heat exchange plates 3.

[0031] In the embodiment, in use, the positioning bolt 14 is rotated and moved forward at the same time, and is then pulled out of the slot, and then the rotating frame 13 is rotated clockwise to drive the two round rods 11 to perform circular motion and stretch the connecting spring 15, the round rods 11 drive the two cross plates 8 to move close to each other through the linkage rod, and drive the corresponding positioning frames 7 to be pulled out from the outer side of the fastening nut 6, and then the fastening nut 6 is rotated to be separated from the fastening bolt 5, so as to release the fixation of the front end plate 2 and the heat exchange plates 3, so as to facilitate the disassembly of the heat exchange plates 3, the plurality of heat exchange plates 3 are installed on the front side of the rear end plate 1 in sequence, the sealing rings 4 are installed between the adjacent two heat exchange plates 3, the front end plate 2 is installed between the upper guide plate 101 and the lower guide plate 102 and is sleeved on the outer side of the fastening bolt 5, the fastening nut 6 is sleeved on the outer side of the fastening bolt 5 and is tightened, so that the heat exchange plates 3 and the sealing rings 4 are tightly abutted through the extrusion of the front end plate 2 and the rear end plate 1, the sealing is realized, the rotating frame 13 is loosened to reset under the elastic force of the connecting spring 15, and the two cross plates 8 and the four positioning frames 7 are reset to fix the fastening nut 6 and avoid loosening, and then the positioning bolt 14 is reversely rotated to be inserted into the slot to fix the rotating frame 13, so as to ensure the sealing of the heat exchange plates 3.

[0032] The plate heat exchanger provided by the utility model is introduced in detail. The principle and implementation mode of the utility model are described by applying specific examples. The above example is only used for helping to understand the method and core idea of the utility model. It should be pointed out that the utility model can be improved and modified in several ways without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A plate heat exchanger against internal leakage, characterized in that Include: The rear end plate (1) and front end plate (2) are provided with a plurality of heat exchange plates (3) between the rear end plate (1) and front end plate (2), the sealing ring (4) is arranged between the two adjacent heat exchange plates (3), the front side of the rear end plate (1) is fixedly installed with four fastening bolts (5), the outer side of the fastening bolt (5) is threadedly connected with the fastening nut (6), the fastening nut (6) is movably abutted on the front side of the front end plate (2), the front side of the front end plate (2) is provided with a positioning mechanism for fixing the fastening nut (6); The positioning mechanism comprises: a rotating frame (13) and two cross plates (8), the two ends of the cross plate (8) are fixedly installed with a positioning frame (7), the positioning frame (7) is movably sleeved on the outer side of the corresponding fastening nut (6), the front side of the cross plate (8) is rotatably installed with an arc-shaped connecting rod (10), the other end of the arc-shaped connecting rod (10) is rotatably connected with the rotating frame (13).

2. A plate heat exchanger according to claim 1, characterized in that The front side of the front end plate (2) is fixedly installed with a fixed shaft (12) and a guide rail (9), the rotating frame (13) is rotatably sleeved on the outer side of the fixed shaft (12), and the cross plate (8) is slidably sleeved on the outer side of the guide rail (9).

3. A plate heat exchanger according to claim 1, c h a r a c t e r i s e d in that The front side of the rotating frame (13) is threadedly connected with a positioning bolt (14), and the front side of the front end plate (2) is provided with a slot, and the positioning bolt (14) is movably inserted into the slot.

4. A plate heat exchanger according to claim 1, c h a r a c t e r i s e d in that The front side of the rotating frame (13) is fixedly installed with two round rods (11), two arc-shaped connecting rods (10) are rotatably installed on the outer sides of the corresponding round rods (11), one side of the rotating frame (13) is fixedly installed with a connecting spring (15), the other end of the connecting spring (15) is fixedly installed with a baffle (16), and the baffle (16) is fixedly installed on the front side of the front end plate (2).

5. A plate heat exchanger according to claim 1, c h a r a c t e r i s e d in that The front side of the front end plate (2) is communicated with a hot water inlet pipe (201), a hot water outlet pipe (202), a cold water inlet pipe (203) and a cold water outlet pipe (204), and the outer sides of the hot water inlet pipe (201), the hot water outlet pipe (202), the cold water inlet pipe (203) and the cold water outlet pipe (204) are provided with flanges.

6. A plate heat exchanger according to claim 1, c h a r a c t e r i s e d in that The front side of the rear end plate (1) is fixedly installed with an upper guide plate (101) and a lower guide plate (102), and the front end plate (2) and the plurality of heat exchange plates (3) are slidably sleeved on the outer sides of the upper guide plate (101) and the lower guide plate (102).

7. A plate heat exchanger according to claim 1, c h a r a c t e r i s e d in that The front side of the rear end plate (1) is fixedly installed with two side frames (103), and the front end plate (2) and the plurality of heat exchange plates (3) are slidably sleeved on the outer sides of the side frames (103).

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