Plate heat exchanger

Abstract

The plate heat exchanger is an efficient heat exchanger formed by stacking metal sheets, thin rectangular channels are formed among various sheets, and the sheets are used as heat exchange media for heat exchange. However, according to a traditional plate heat exchanger, limiting rods are arranged at the upper ends and the lower ends of heat exchange plates in a sleeving mode, a certain heat exchange plate in the middle needs to be replaced after a clamping rear plate is detached from the rear end, and rapid replacement cannot be conducted; according to the plate heat exchanger, a heat exchange plate set is arranged between a front fixed plate and a rear movable plate; the upper end and the lower end of the heat exchange plate set are connected with the two limiting rods in a clamped mode. An upper limiting block is arranged on the upper side of the heat exchange plate set, an upper movable groove is formed in the upper side of the heat exchange plate set, an upper movable column is arranged in the upper movable groove in an up-down sliding mode, and the upper end of the upper movable column penetrates out of the upper movable groove to be connected with the lower side of the upper limiting block. The outer wall of the upper movable column is sleeved with a first spring between the upper limiting block and the heat exchange plate set, and the upper side of the upper limiting block is concavely provided with an upper limiting groove matched with the limiting rod.

Description

Technical Field

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

[0002] A plate heat exchanger is a high-efficiency heat exchanger made up of a series of stacked corrugated metal sheets. Thin rectangular channels are formed between the various plates, and heat exchange is carried out through the heat exchange plates as a medium. The front and rear ends of the stacked heat exchange plates are clamped and fixed using front and rear plates. The plate heat exchanger is used to cool the liquid, and the number of heat exchange plates will be increased or decreased according to different cooling requirements.

[0003] However, since traditional plate heat exchangers are equipped with limit rods on the upper and lower ends of the heat exchange plates, if a middle heat exchange plate is to be replaced, it is necessary to remove the clamped rear plate from the rear end, pull the heat exchange plate out of the rear end of the limit rod, then put the new heat exchange plate back onto the limit rod, and finally reinstall the rear plate and press it tightly. The process of replacing the plates is very cumbersome and time-consuming, and the plates cannot be replaced quickly. Utility Model Content

[0004] The purpose of the utility model is to provide a plate heat exchanger to solve the problem of rapid replacement of plates.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A plate heat exchanger comprises a front fixed plate and a rear movable plate placed vertically, with two limit rods arranged parallel to each other above and below between the front fixed plate and the rear movable plate; a heat exchange plate group is arranged between the front fixed plate and the rear movable plate; the upper and lower ends of the heat exchange plate group are respectively connected with the two limit rods; an upper limit block is arranged on the upper side of the heat exchange plate group, an upper movable groove is arranged on the upper side of the heat exchange plate group, an upper movable column is arranged to slide up and down in the upper movable groove, the upper end of the upper movable column passes through the upper movable groove and is connected to the lower side of the upper limit block; a first spring is sleeved on the outer wall of the upper movable column between the upper limit block and the heat exchange plate group, and an upper limit groove matching the limit rod is recessed on the upper side of the upper limit block.

[0007] A further technical solution is that a lower limit block is also provided on the lower side of the heat exchange plate group; a lower movable groove is provided on the lower side of the heat exchange plate group, and a lower movable column is provided in the lower movable groove for sliding up and down, and the lower end of the lower movable column passes through the movable groove and is connected to the upper side of the lower limit block; a second spring is provided on the outer wall of the lower movable column between the lower limit block and the heat exchange plate group, and a lower limit groove matching the limit rod is provided in the recessed position on the lower side of the lower limit block.

[0008] A further technical solution is that an upper inclined surface sloping from bottom to top is provided on one side of the upper limit block, and the top end of the upper inclined surface is close to the notch of the upper limit slot.

[0009] A further technical solution is that a lower inclined surface sloping from top to bottom is provided on one side of the lower limit block, and the bottom end of the lower inclined surface is close to the notch of the lower limit slot; the upper inclined surface and the lower inclined surface face opposite directions.

[0010] A further technical solution is that an upper limit ring is provided around the notch of the upper movable groove; and a first stop block cooperating with the upper limit ring is provided at the bottom end of the upper movable column.

[0011] A further technical solution is that a lower limiting ring is provided around the notch of the lower movable groove; and a second stop block cooperating with the lower limiting ring is provided at the top end of the lower movable column.

[0012] A further technical solution is that a first limiting hole is provided on the front fixed plate, a second limiting hole is provided on the rear movable plate corresponding to the first limiting hole, the front end of the limiting rod is fixedly connected to the first limiting hole, and the rear end of the limiting rod is slidably connected to the second limiting hole.

[0013] A further technical solution is that the heat exchange plate group includes two upper and lower parallel cluster plates, a number of tightly fitted heat exchange plates are arranged between the two cluster plates, and a cooling cavity and a heat exchange cavity are formed in sequence between the two adjacent heat exchange plates; the two cluster plates are respectively arranged as an upper cluster plate and a lower cluster plate, the upper movable groove is recessed on the upper side of the upper cluster plate; the lower movable groove is recessed on the lower side of the lower cluster plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) Through the heat exchange plate group, the heat exchange plates are managed or inspected in groups. By modularizing the heat exchange plates into heat exchange plate groups, when adjusting the heat exchange capacity of the entire plate heat exchanger, multiple heat exchange plates can be quickly added or removed by adding or removing a heat exchange plate group, thereby adjusting the heat exchange capacity of the plate heat exchanger.

[0016] (2) When installing the heat exchange plate group, through the upper movable column and upper movable groove on the lower side of the upper limit block and the first spring, during the process of replacing the heat exchange plate group, the upper limit block is pressed down to reduce the upper and lower heights of the heat exchange plate group, and the heat exchange plate group can enter the space between the two limit rods from the side of the limit rod. At the same time, the first spring makes the upper limit block return to its position upward, and the upper limit block matches and abuts the limit rod, completing the rapid positioning and installation of the heat exchange plate group.

[0017] (3) When disassembling the heat exchange plate group, the upper and lower heights of the heat exchange plate group are reduced by pressing down the upper limit block. The heat exchange plate group can be removed from the side of the limit rod to leave the space between the two limit rods, thereby completing the rapid disassembly of the heat exchange plate group. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a front and side view of a plate heat exchanger of the present utility model.

[0019] Figure 2 This is a cross-sectional view of a plate heat exchanger of the present utility model.

[0020] Figure 3 This is a front and side view of a heat exchange plate group of a plate heat exchanger of the utility model.

[0021] Figure 4 This is a cross-sectional view of a heat exchange plate group of a plate heat exchanger of the utility model.

[0022] Icon: 1-front fixed plate, 2-rear movable plate, 3-heat exchange plate group, 4-limit rod, 5-upper limit block, 6-upper inclined surface, 7-clustering plate, 8-upper movable column, 9-upper movable groove, 10-first spring, 11-second spring, 12-upper limit ring, 13-first stop block, 14-second stop block, 15-lower limit block, 16-lower inclined surface, 17-lower movable column, 18-lower movable groove, 19-lower limit ring, 20-first limit hole, 21-second limit hole, 22-upper limit groove, 23-lower limit groove, 24-heat exchange plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Example 1:

[0025] When the cam 1 is in the upright position, the upper limit stop 5 of the cam 1 is set, and the upper limit stop 5 of the cam 1 is set to the right of the support 5. When the cam 1 is in the upright position, the upper limit stop 5 of the cam 1 is set to the right of the support 5. When the cam 1 is in the upright position, the upper limit stop 5 of the cam 1 is set to the right of the support 5. When the cam 1 is in the upright position, the upper limit stop 5 of the cam 1 is set to the right of the support 5.

[0026] Example 2:

[0027] The lower side of the heat exchange plate group 3 is also provided with a lower limit block 15; the lower side of the heat exchange plate group 3 is provided with a lower movable groove 18, and a lower movable column 17 is provided in the lower movable groove 18 for sliding up and down, and the lower end of the lower movable column 17 passes through the movable groove and is connected to the upper side of the lower limit block 15; the outer wall of the lower movable column 17 is sleeved with a second spring 11 between the lower limit block 15 and the heat exchange plate group 3, and the lower side of the lower limit block 15 is recessed and provided with a lower limit groove 23 matching the lower limit rod 4; the lower limit rod 4 is matched with the lower limit block 15, and the heat exchange plate group 3 is abutted against the upper limit rod 4 and the lower limit block 15 at the upper and lower ends through the upper limit block 5 and the lower limit block 15. The vertical position of the heat exchange plate group 3 is limited at the upper and lower ends, so that the adjacent heat exchange plate groups 3 are aligned and kept vertically parallel to the front fixed plate 1 to avoid misalignment during installation.

[0028] Example 3:

[0029] One side of the upper limit block 5 is provided with an upper inclined surface 6 inclined from bottom to top, and the top of the upper inclined surface 6 is close to the notch of the limit groove 22; when installing the heat exchange plate group, the upper inclined surface 6 first abuts against the limit rod 4 on the upper side, and the upper limit block 5 moves downward due to the pressure of the limit rod 4 at the upper inclined surface 6, and moves toward the top of the upper inclined surface 6 relative to the limit rod 4 guided by the inclined surface; after reaching the top, continue to push inward until the limit rod 4 enters the upper limit groove 22.

[0030] Example 4:

[0031] A lower inclined surface 16 sloping from top to bottom is provided on one side of the lower limit block 15, and the bottom end of the lower inclined surface 16 is close to the notch of the lower limit groove 22; the upper inclined surface 6 and the lower inclined surface 16 face opposite directions; when installing the heat exchange plate group, the lower inclined surface 16 first abuts against the lower limit rod 4, and the lower limit block 15 moves upward due to the abutment against the lower limit rod 4 at the lower inclined surface 16, and the limit rod 4 on the relative lower side is guided by the inclined surface to move toward the bottom end of the lower inclined surface 16; after reaching the bottom end, it continues to push inward until the limit rod 4 enters the lower limit groove 23.

[0032] Example 5:

[0033] An upper limit ring 12 is provided around the groove of the upper movable groove 9; the bottom end of the upper movable column 8 is provided with a first stop block 13 that cooperates with the upper limit ring 12; the first stop block 13 and the upper limit ring 12 limit the maximum distance that the upper movable column 8 can move up and down, and the upper movable column 8 will not leave the upper movable groove 9.

[0034] Example 6:

[0035] A lower limit ring 19 is provided around the notch of the lower movable groove 18; a second stop block 14 cooperating with the lower limit ring 19 is provided at the top of the lower movable column 17; the second stop block 14 and the lower limit ring 19 limit the maximum distance of the upper and lower movements of the lower movable column 17, and the lower movable column 17 will not separate from the lower movable groove 18 when moving.

[0036] Example 6:

[0037] A first limiting hole 20 is provided on the front fixed plate 1, and a second limiting hole 21 is provided on the rear movable plate 2 corresponding to the first limiting hole 20. The front end of the limiting rod 4 is fixedly connected to the first limiting hole 20, and the rear end of the limiting rod 4 is slidably connected to the second limiting hole 21; the front fixed plate 1 and the rear movable plate 2 clamp the heat exchange plate group 3 in front and behind the limiting rod 4, further fixing the overall device and the heat exchange plate group 3.

[0038] Example 7:

[0039] Loosen the fixings between the front fixing plate 1 and the rear fixing plate 2 to slightly increase the distance between the two, place the heat exchange plate group 3 between the two limit rods 4, rotate the heat exchange plate group 3, make the upper limit block 5 and the lower limit block 15 simultaneously abut the limit rods 4 on the upper and lower sides, apply force to the geometric center of the heat exchange plate group 3 from two opposite directions, make the limit groove of the upper limit block 5 match the limit rod 4 on the upper side, and the limit groove of the lower limit block 15 match the limit rod 4 on the lower side, finally press the front fixing plate 1 and the rear fixing plate 2, and the adjacent heat exchange plate groups 3 are pressed tightly to complete the rapid positioning and installation of the heat exchange plate.

[0040] Example 8:

[0041] The heat exchange plate group 3 includes two upper and lower parallel cluster plates 7, and a number of tightly fitted heat exchange plates are arranged between the two cluster plates 7. The adjacent two heat exchange plates are sequentially matched to form a cooling cavity and a heat exchange cavity; the upper movable groove 9 is recessed on the upper side of the upper cluster plate; the lower movable groove 18 is recessed on the lower side of the lower cluster plate; through the cluster plate 7, multiple heat exchange plates 14 are grouped and planned, and the heat exchange plates 14 are modularly bundled into a heat exchange plate group 3, which is convenient for centralized inspection and positioning of the heat exchange plates 14, and easier to locate when disassembling or replacing the heat exchange plates 14.

[0042] Example 9:

[0043] The heat exchange plates 14 in each heat exchange plate group 3 can be arranged in the same manner as the heat exchange plates 14 in the plate heat exchanger in the prior art, so that the liquid to be cooled passes through the heat exchange cavity and the cooling liquid enters the cooling cavity, and isolated heat exchange is performed with the help of the heat exchange plates 14 . The edges between two adjacent heat exchange plates 14 are sealed by rubber rings to form a cooling cavity and a heat exchange cavity. The rubber ring is used to isolate the cooling cavity and the heat exchange cavity on the same side of the heat exchange plate 14; and the two adjacent heat exchange plates 14 are placed upside down, and the cooling cavities on both sides of the heat exchange plate 14 are aligned with the heat exchange cavities on the other side, and heat exchange is formed through the heat exchange plate 14; the front fixing plate 1 is provided with four holes running through both sides; the two holes on the left side are connected to the cooling cavity and are set as the coolant inlet and the coolant outlet; the two holes on the right side are connected to the heat exchange cavity and are set as the raw liquid inlet and the raw liquid outlet; the high-temperature raw liquid enters the heat exchange cavity from the right raw liquid inlet, and the coolant enters the cooling cavity from the left coolant inlet; and because the two adjacent heat exchange plates 14 are placed upside down, the heat exchange cavity on the right side is heat exchanged with the cooling cavity of the adjacent heat exchange plate 14; after heat exchange, the cooled raw liquid is discharged from the raw liquid outlet, and the coolant is discharged from the coolant outlet, completing the heat exchange process between the raw liquid and the coolant.

[0044] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, various variations and modifications may be made to the components and / or layout of the subject combination arrangement. In addition to variations and modifications to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A plate heat exchanger, comprising a front fixed plate (1) and a rear movable plate (2) placed vertically, wherein two limit rods (4) are arranged in parallel above and below between the front fixed plate (1) and the rear movable plate (2); a heat exchange plate group (3) is arranged between the front fixed plate (1) and the rear movable plate (2); the upper and lower ends of the heat exchange plate group (3) are respectively connected to the two limit rods (4) by clamping, and characterized in that: An upper limit block (5) is provided on the upper side of the heat exchange plate group (3), an upper movable groove (9) is provided on the upper side of the heat exchange plate group (3), an upper movable column (8) is provided in the upper movable groove (9) to slide up and down, the upper end of the upper movable column (8) passes through the upper movable groove (9) and is connected to the lower side of the upper limit block (5); the outer wall of the upper movable column (8) is provided with a first spring (10) between the upper limit block (5) and the heat exchange plate group (3), and the upper side of the upper limit block (5) is recessed and provided with an upper limit groove (22) matching the limit rod (4).

2. A plate heat exchanger according to claim 1, characterized in that: A lower limit block (15) is also provided on the lower side of the heat exchange plate group (3); a lower movable groove (18) is provided on the lower side of the heat exchange plate group (3), a lower movable column (17) is provided in the lower movable groove (18) for sliding up and down, the lower end of the lower movable column (17) passes through the movable groove and is connected to the upper side of the lower limit block (15); the outer wall of the lower movable column (17) is provided with a second spring (11) between the lower limit block (15) and the heat exchange plate group (3), and the lower side of the lower limit block (15) is recessed and provided with a lower limit groove (23) matching the limit rod (4).

3. The plate heat exchanger according to claim 2, characterized in that: An upper inclined surface (6) tilted from bottom to top is provided on one side of the upper limit block (5), and the top end of the upper inclined surface (6) is close to the notch of the upper limit slot (22).

4. The plate heat exchanger according to claim 3, characterized in that: A lower inclined surface (16) tilted from top to bottom is provided on one side of the lower limit block (15), and the bottom end of the lower inclined surface (16) is close to the notch of the lower limit slot (23); the upper inclined surface (6) and the lower inclined surface (16) face opposite directions.

5. The plate heat exchanger according to claim 1, characterized in that: An upper limit ring (12) is provided around the notch of the upper movable groove (9); and a first stop block (13) cooperating with the upper limit ring (12) is provided at the bottom end of the upper movable column (8).

6. The plate heat exchanger according to claim 2, characterized in that: A lower limiting ring (19) is provided around the notch of the lower movable groove (18); and a second stop block (14) cooperating with the lower limiting ring (19) is provided at the top end of the lower movable column (17).

7. The plate heat exchanger according to claim 1, characterized in that: The front fixed plate (1) is provided with a first limiting hole (20), the rear movable plate (2) is provided with a second limiting hole (21) corresponding to the first limiting hole (20), the front end of the limiting rod (4) is fixedly connected to the first limiting hole (20), and the rear end of the limiting rod (4) is slidably connected to the second limiting hole (21).

8. The plate heat exchanger according to claim 2, characterized in that: The heat exchange plate group (3) includes two upper and lower parallel cluster plates (7), a plurality of tightly fitted heat exchange plates (24) are arranged between the two cluster plates (7), and a cooling cavity and a heat exchange cavity are formed in sequence between two adjacent heat exchange plates (24); the two cluster plates (7) are respectively arranged as an upper cluster plate and a lower cluster plate, the upper movable groove (9) is recessed and arranged on the upper side of the upper cluster plate; the lower movable groove (18) is recessed and arranged on the lower side of the lower cluster plate.

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