Ammonium sulfate plate type heat exchange device

Abstract

An ammonium sulfate plate type heat exchange device relates to the field of heat exchange devices and comprises a base, an upper guide beam, a lower guide beam, a fixed clamping plate, a plate sheet, a movable clamping plate and a supporting column, a plate shifting mechanism is arranged on the top surface of the base and is a U-shaped plate shifting frame, a bottom beam of the U-shaped plate shifting frame is slidably arranged in the base and is perpendicular to the lower guide beam in the horizontal direction, and the supporting column is arranged on the bottom beam of the U-shaped plate shifting frame. The sliding direction of the bottom beam of the U-shaped shifting plate frame is consistent with the arrangement direction of the lower guide beam, and the vertical column of the U-shaped shifting plate frame is connected with the bottom beam of the U-shaped shifting plate frame through a T-shaped frame. The bottom of the T-shaped frame is fixedly connected with a U-shaped shifting plate frame bottom beam, the arrangement direction of a transverse rod on the top of the T-shaped frame is parallel to the U-shaped shifting plate frame bottom beam, a vertical column of the U-shaped shifting plate frame is connected with the transverse rod on the top of the T-shaped frame in a sliding mode, and an inserting short column is arranged at the position, right opposite to a prismatic gap between plates, of the inner side of the vertical column of the U-shaped shifting plate frame. The problem that an existing plate heat exchanger is prone to deformation is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plate heat exchangers, in particular to an ammonium sulfate plate heat exchanger. BACKGROUND

[0002] The plate heat exchanger is a commonly used heat exchanger, the core idea of which is to form a narrow flow channel through thin metal plates, so that cold and hot fluids flow on both sides of the plates, and sufficient heat exchange is carried out through a large plate surface area. The main structure includes plates, sealing gaskets, fixed compression plates, movable compression plates, compression studs and nuts, and the frame and auxiliary components include a frame, upper guide rods, lower guide rods and interfaces.

[0003] The existing plate heat exchanger structure is relatively mature, but we still find some problems in the use process. The main problem is that the plates are prone to deformation, which will lead to a decrease in heat exchange efficiency and an increase in pressure drop. Further, the deformation of the plates will also cause sealing failure, resulting in external leakage and internal liquid mixing problems. After research, it is found that the main problem causing this phenomenon is that the plates need to be cleaned regularly. When disassembling the plates, the existing technology is to directly use hands to take down the plates. Under normal circumstances, such operation is not a big problem, but the plate heat exchanger often has the problem of scale accumulation inside the plates. When the scale is accumulated, the plates need to be taken down directly with a certain force, and the hands often have the problem of uneven force. This is particularly prone to cause deformation of the plates. In order to solve the above problems, the existing plate heat exchanger structure needs to be improved. SUMMARY

[0004] The purpose of the present application is to provide an ammonium sulfate plate heat exchanger to solve the problem of easy deformation of the plates of the existing plate heat exchanger.

[0005] An ammonium sulfate plate heat exchanger includes a base, an upper guide beam, a lower guide beam, a fixed clamping plate, plates, a movable clamping plate, and a support column. The fixed clamping plate and the support column are respectively fixed to both ends of the top surface of the base. The upper guide beam is horizontally positioned across the top of the fixed clamping plate and the support column, and the lower guide beam is horizontally positioned across the bottom of the fixed clamping plate and the support column. The movable clamping plate is slidably positioned between the fixed clamping plate and the support column in a horizontal direction. The plates are positioned between the movable clamping plate and the fixed clamping plate. The top of the base is also provided with a lever mechanism, which is a U-shaped lever frame. The bottom beam of the U-shaped lever frame is horizontal. The base is set inside the base. The bottom beam of the "U"-shaped lever frame is perpendicular to the lower guide beam. The bottom beam of the "U"-shaped lever frame can slide along the direction of the lower guide beam. The vertical column of the "U"-shaped lever frame is connected to the bottom beam of the "U"-shaped lever frame through a "T"-shaped frame. The top crossbar of the "T"-shaped frame is located on the top surface of the base. The direction of the top crossbar of the "T"-shaped frame is parallel to the bottom beam of the "U"-shaped lever frame. The vertical column of the "U"-shaped lever frame is slidably connected to the top crossbar of the "T"-shaped frame. A short insertion column is provided on the inner side of the vertical column of the "U"-shaped lever frame at the position of the prismatic gap between the plates.

[0006] This solution incorporates a U-shaped pry bar frame. This frame ensures even force distribution on the board during removal, preventing uneven force distribution that occurs when removing boards by hand. The steps for removing boards using the U-shaped pry bar frame are as follows: First, move the movable clamp to release the board. Then, push the U-shaped pry bar frame between the outermost board and its adjacent board, aligning the short insert on the inner side of the vertical column of the U-shaped pry bar with the diamond-shaped gap between the outermost board and its adjacent board. At this point, the operator needs to push the vertical column of the U-shaped pry bar towards the center, ensuring the vertical column of the U-shaped pry bar... Insert the short insert post into the prismatic gap between the outermost plate and its adjacent plate. Then push the "U"-shaped lever frame towards one end of the movable plate to separate the outermost plate. The separated plate can then be removed for cleaning. Repeat the above steps when removing subsequent plates. Since the prismatic gap between the plates is evenly distributed from top to bottom, the plates are subjected to uniform force when using the short insert post to remove the plates, and are less prone to deformation due to uneven force. The bottom beam of the "U"-shaped lever frame slides inside the base, so it is not affected by other structural components and will not affect other structural components.

[0007] As a further preferred embodiment of the present invention, the edge of the plate is provided with an edge-sealing structure.

[0008] This prevents the plate from cutting the operator.

[0009] As a further preferred embodiment of the present application, two sliding openings parallel to the lower guide beam are formed on both sides of the top surface of the base, the sliding openings are opposite to the vertical rods of the 'T' shaped frame, the width of the sliding openings is adapted to the width of the vertical rods of the 'T' shaped frame, and the top surface and the bottom surface of the base beam sliding compartment inside the base are uniformly clamped with the ball bearings.

[0010] The ball bearings clamped on the top surface and the bottom surface of the base beam sliding compartment inside the base can make the 'U' shaped plate frame slide more smoothly, and the operator can use it more easily.

[0011] As a further preferred embodiment of the present application, the inner side of the sliding opening on the top surface of the base is further provided with an upwardly inclined slope slag baffle towards the sliding opening, and the top of the slope slag baffle is close to the lower part of the inner side of the vertical column of the 'U' shaped plate frame.

[0012] Because the surface of the plate is scaled, when the plate is taken out, the scale will fall off, and if it enters the sliding opening on the top surface of the base, it will be difficult to clean it, which will affect the sliding of the 'U' shaped plate frame in the future. Therefore, the slope slag baffle is provided to prevent the falling scale from entering the sliding opening on the top surface of the base.

[0013] As a further preferred embodiment of the present application, the outer side of the vertical column of the 'U' shaped plate frame is further provided with a 'U' shaped plate frame control handle for controlling the advance and retreat and opening and closing of the 'U' shaped plate frame.

[0014] The operator can conveniently and quickly control the advance, retreat and opening and closing of the 'U' shaped plate frame through the 'U' shaped plate frame control handle.

[0015] As a further preferred embodiment of the present application, the 'U' shaped plate frame control handle is slidingly connected with the vertical column of the 'U' shaped plate frame, and the 'U' shaped plate frame control handle can slide in the vertical direction.

[0016] The height of the 'U' shaped plate frame control handle can be adjusted, and after the height is adjusted in place, the position can be fixed through the screw rod penetrating in the middle thereof and cooperating with the nut, so that the operation height can be adjusted according to the height of the operator.

[0017] As a further preferred embodiment of the present application, the length of the inserted short column is longer than the depth of the prismatic gap between the plates, and the end of the inserted short column opposite to the prismatic gap is further provided with a buffer and sound insulation rubber pad.

[0018] The buffer and sound insulation rubber pad prevents the inner side of the vertical column of the 'U' shaped plate frame from contacting the outer side of the plate, so as to affect the separation between the plates, and plays a role of flexible contact and sound insulation.

[0019] As a further preferred embodiment of the present application, the plate pieces include common plate pieces and support plate pieces, the support plate pieces are arranged between the common plate pieces, one support plate piece is arranged every 15-20 common plate pieces, both sides of the support plate piece are provided with side-limiting fixed short columns, both sides of the plate piece between the fixed clamping plate and the movable clamping plate are provided with support plate piece limiting fixed rods, one end of the support plate piece limiting fixed rod penetrates through the fixed clamping plate and is threadedly connected with the fixed clamping plate, the other end of the support plate piece limiting fixed rod is inserted with the movable clamping plate, the side of the support plate piece limiting fixed rod is provided with a side rotary insertion positioning short column opposite to the position of the side-limiting fixed short column, the side rotary insertion positioning short column penetrates through the support plate piece limiting fixed rod and is threadedly connected with the support plate piece limiting fixed rod, and the inner end surface of the side rotary insertion positioning short column is provided with an insertion limiting groove matched with the side-limiting fixed short column.

[0020] Another reason for the deformation of the plate piece is the liquid pressure, therefore, in the middle part of the medium-sized plate heat exchanger with a total of 150-200 plate pieces, every 10-15 plate pieces, a special "support plate" is inserted, that is, a support plate piece, the support plate piece is fixed with the support plate piece limiting fixed rod through the side-limiting fixed short column and the side rotary insertion positioning short column, so that an internal "skeleton" is provided for the whole plate piece package, the separation force generated by part of the fluid pressure is borne, the burden of the plate piece and the bolt is greatly reduced, the probability of deformation is reduced, and it is more suitable for super-high pressure working conditions with a pressure exceeding 4.0 MPa.

[0021] As a further preferred embodiment of the present application, the thickness of the support plate piece is 1.5 times the thickness of the common plate piece.

[0022] Since the support plate piece needs to bear more pressure, the thickness thereof is increased, and the heat exchange efficiency of the support plate piece is sacrificed to improve the pressure bearing capacity.

[0023] As a further preferred embodiment of the present application, the inclination angle of the corrugation of the plate piece is 75°-80°.

[0024] Here, the inclination angle refers to the angle with the plane of the plate piece, compared with the common corrugation inclination angle of 60°-70°, the corrugation in the present application is more "steep", and the high-inclination-angle corrugation can more effectively decompose the load into tensile / compressive stress in the plane of the plate piece, rather than bending stress. The tensile strength of the material is much higher than the bending capacity, thereby significantly improving the overall stiffness and pressure bearing limit of the plate piece.

[0025] Compared with the prior art, the present application can at least achieve one of the following beneficial effects: 1、In this scheme is provided with "U" type push plate frame, through "U" type push plate frame can be in the plate piece uniform stress when taking, so as to avoid the plate piece stress uneven situation occurs when taking by hand, through "U" type push plate frame taking steps as follows: first move the movable clamping plate, release the clamping of the plate piece, then push "U" type push plate frame to the outermost plate piece and its adjacent plate piece between, make the insertion of "U" type push plate frame vertical column inside short column opposite the outermost plate piece and its adjacent plate piece between the edge gap position, at this time the operator needs to push "U" type push plate frame vertical column to make the insertion of "U" type push plate frame vertical column inside short column insert the outermost plate piece and its adjacent plate piece between the edge gap position, then push "U" type push plate frame to the movable plate piece one end movement can be separated out the outermost plate piece, then take the separated out plate piece can be cleaned, take the subsequent plate piece according to the above steps can be repeated, because the edge gap between the plate piece is evenly distributed from top to bottom, so when taking the plate piece by insertion of short column, the plate piece stress is uniform, not easy to appear the problem of deformation due to uneven stress, the bottom beam of "U" type push plate frame is sliding in the inside of the base, so it is not affected by other structural parts, and will not affect other structural parts.

[0026] 2、The top surface and bottom surface clamping ball of the bottom beam sliding chamber inside the base can make the "U" type push plate frame slide more smoothly, and the operator can use it more easily.

[0027] 3、Because the surface of the plate piece is scaled, the scale will fall when taking the plate piece, if it enters the top surface sliding opening of the base, it will be difficult to clean, and it will affect the sliding of the "U" type push plate frame, therefore, the inclined plane slag baffle is provided to prevent the falling scale from entering the top surface sliding opening of the base.

[0028] 4、Prevent the inside of the vertical column of the "U" type push plate frame from contacting the outside of the plate piece, so as to affect the separation between the plate pieces, the flexible contact and sound insulation effect of the buffer sound insulation rubber pad layer.

[0029] 5、The present application prevents the plate piece from deforming by setting the supporting plate piece, increasing the thickness of the supporting plate piece, adjusting the inclination angle of the corrugated structure, and setting a special plate piece dismounting mechanism, greatly prolongs the service life of the plate piece, and reduces the frequency of replacing the plate piece. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structural diagram of the present application.

[0031] Figure 2 The sectional view of the plate piece. Figure 1

[0032] Figure 3 ​The connecting structure profile view of the "U" type plate frame and the base of the present application.

[0033] Figure 4 The structure schematic view of the support plate of the present application.

[0034] 1-base, 2-upper guide beam, 3-lower guide beam, 4-fixing clamp plate, 5-plate, 51-ordinary plate, 52-support plate, 6-movable clamp plate, 7-support column, 8-"U" type plate frame, 81-bottom beam, 82-vertical column, 9-"T" type frame, 10-insertion short column, 11-rolling ball, 12-inclined plane slag dam, 13-"U" type plate frame control handle, 14-lateral limiting type fixing short column, 15-support plate limiting fixing rod, 16-lateral rotary insertion positioning short column. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. The components of the embodiments of the present application described herein can be arranged and designed in various different configurations.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "join" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. Specific embodiment 1:

[0039] Figure 1 , Figure 2 , Figure 3 , Figure 4An ammonium sulfate plate heat exchanger is shown, comprising a base 1, an upper guide beam 2, a lower guide beam 3, a fixed clamping plate 4, a plate 5, a movable clamping plate 6 and a support 7, the fixed clamping plate 4 and the support 7 are fixed at the two ends of the top surface of the base 1 respectively, the upper guide beam 2 is transversely arranged on the top of the fixed clamping plate 4 and the support 7, the lower guide beam 3 is transversely arranged on the bottom of the fixed clamping plate 4 and the support 7, the movable clamping plate 6 is slidably arranged between the fixed clamping plate 4 and the support 7, and the plate 5 is arranged between the movable clamping plate 6 and the fixed clamping plate 4, the top of the base 1 is further provided with a push plate mechanism, the push plate mechanism is a "U"-shaped push plate frame 8, the bottom beam 81 of the "U"-shaped push plate frame 8 is horizontally arranged in the base 1, the direction in which the bottom beam 81 of the "U"-shaped push plate frame 8 is arranged is perpendicular to the lower guide beam 3, the bottom beam 81 of the "U"-shaped push plate frame 8 can slide along the direction in which the lower guide beam 3 is arranged, the vertical column 82 of the "U"-shaped push plate frame 8 is connected with the bottom beam 81 of the "U"-shaped push plate frame 8 through a "T"-shaped frame 9, the top horizontal rod of the "T"-shaped frame 9 is located on the top surface of the base, the direction in which the top horizontal rod of the "T"-shaped frame 9 is arranged is parallel to the bottom beam 81 of the "U"-shaped push plate frame 8, the vertical column 82 of the "U"-shaped push plate frame 8 is slidably connected with the top horizontal rod of the "T"-shaped frame 9, and a short column 10 is arranged at a position of a prismatic gap between the inner side of the vertical column 82 of the "U"-shaped push plate frame 8 and the plate 5. Specific embodiment 2:

[0041] This embodiment is a further description of the plate 5 based on specific embodiment 1, the plate edge of the plate 5 is provided with a edge covering structure. Specific embodiment 3:

[0043] This embodiment is a further description of the base 1 based on specific embodiment 1, two sides of the top surface of the base 1 are provided with sliding openings parallel to the lower guide beam 3, the sliding openings are opposite to the vertical rods of the "T"-shaped frame 9, the width of the sliding openings is matched with the width of the vertical rods of the "T"-shaped frame 9, and the top surface and the bottom surface of the bottom beam sliding cavity inside the base 1 are uniformly clamped with balls 11. Specific embodiment 4:

[0045] This embodiment is a further description of the base 1 based on specific embodiment 3, the inner side of the sliding opening of the top surface of the base 1 is further provided with an inclined upward inclined surface slag dam 12 facing the sliding opening, and the top of the inclined surface slag dam 12 is close to the lower part of the inner side surface of the vertical column 82 of the "U"-shaped push plate frame 8. Specific embodiment 5:

[0047] This embodiment is a further description of the "U" type push plate frame 8 based on specific embodiment 1. The outer side of the vertical column 82 of the "U" type push plate frame 8 is also provided with a "U" type push plate frame control handle 13 for controlling the advance and retreat and opening and closing of the "U" type push plate frame 8. Specific embodiment 6:

[0049] This embodiment is a further description of the "U" type push plate frame 8 based on specific embodiment 5. The "U" type push plate frame control handle 13 is slidingly connected with the vertical column 82 of the "U" type push plate frame 8, and the "U" type push plate frame control handle 13 can slide in the vertical direction. Specific embodiment 7:

[0051] This embodiment is a further description of the inserted short column 10 based on specific embodiment 1. The length of the inserted short column 10 is longer than the depth of the prismatic gap between the plate pieces 5, and the end of the inserted short column 10 opposite to the prismatic gap is also provided with a buffer and sound-absorbing rubber pad. Specific embodiment 8:

[0053] This embodiment is a further description of the plate piece 5 based on specific embodiment 1. The plate piece 5 includes ordinary plate pieces 51 and support plate pieces 52. The support plate pieces 52 are arranged between the ordinary plate pieces 51, and one support plate piece 52 is arranged every 15-20 ordinary plate pieces 51. The two sides of the support plate piece 52 are provided with side limiting type fixed short columns 14. The two sides of the plate piece 5 between the fixed clamping plate 4 and the movable clamping plate 6 are provided with support plate piece limiting and fixing rods 15. One end of the support plate piece limiting and fixing rod 15 penetrates the fixed clamping plate 4 and is threadedly connected with the fixed clamping plate 4. The other end of the support plate piece limiting and fixing rod 15 is inserted with the movable clamping plate 6. The inner side of the support plate piece limiting and fixing rod 15 is provided with a side rotating insertion positioning short column 16 opposite to the position of the side limiting type fixed short column 14. The side rotating insertion positioning short column 16 penetrates the support plate piece limiting and fixing rod 15 and is threadedly connected with the support plate piece limiting and fixing rod 15. The inner end surface of the side rotating insertion positioning short column 16 is provided with an insertion limiting groove matched with the side limiting type fixed short column 14. Specific embodiment 9:

[0055] This embodiment is a further description of the support plate piece 52 based on specific embodiment 8. The thickness of the support plate piece 52 is 1.5 times the thickness of the ordinary plate piece 51. Specific embodiment 10: This embodiment is a further description of the plate piece 5 based on specific embodiment 1. The inclination angle of the corrugation of the plate piece 5 is 75°-80°.

[0057] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ammonium sulfate plate heat exchanger, comprising a base (1), an upper guide beam (2), a lower guide beam (3), a fixed clamping plate (4), a plate (5), a movable clamping plate (6) and a support column (7), the fixed clamping plate (4) and the support column (7) are respectively fixed at both ends of the top surface of the base (1), the upper guide beam (2) is horizontally arranged on the top of the fixed clamping plate (4) and the support column (7), the lower guide beam (3) is horizontally arranged on the bottom of the fixed clamping plate (4) and the support column (7), the movable clamping plate (6) is horizontally arranged between the fixed clamping plate (4) and the support column (7), and the plate (5) is arranged between the movable clamping plate (6) and the fixed clamping plate (4), characterized in that: The top of the base (1) is also provided with a push plate mechanism, which is a "U"-shaped push plate frame (8), the bottom beam (81) of the "U"-shaped push plate frame (8) is horizontally arranged in the base (1), the direction in which the bottom beam (81) of the "U"-shaped push plate frame (8) is arranged is perpendicular to the lower guide beam (3), the bottom beam (81) of the "U"-shaped push plate frame (8) can slide along the direction in which the lower guide beam (3) is arranged, the vertical column (82) of the "U"-shaped push plate frame (8) is connected with the bottom beam (81) of the "U"-shaped push plate frame (8) through a "T"-shaped frame (9), the top horizontal rod of the "T"-shaped frame (9) is located on the top surface of the base, the direction in which the top horizontal rod of the "T"-shaped frame (9) is arranged is parallel to the bottom beam (81) of the "U"-shaped push plate frame (8), the vertical column (82) of the "U"-shaped push plate frame (8) is in sliding connection with the top horizontal rod of the "T"-shaped frame (9), and a short inserting column (10) is arranged at a position opposite to the edge-shaped gap between the board pieces (5) on the inner side of the vertical column (82) of the "U"-shaped push plate frame (8).

2. The ammonium sulfate plate heat exchanger according to claim 1, characterized in that: The edges of the board pieces (5) are provided with a covering structure.

3. The ammonium sulfate plate heat exchanger according to claim 1, characterized in that: The two sides of the top surface of the base (1) are provided with sliding openings parallel to the lower guide beam (3), the sliding openings are opposite to the vertical rods of the "T"-shaped frame (9), the width of the sliding openings is matched with the width of the vertical rods of the "T"-shaped frame (9), and the top surface and the bottom surface of the bottom beam sliding cavity in the base (1) are uniformly clamped with balls (11).

4. The ammonium sulfate plate heat exchanger according to claim 3, characterized in that: The inner side of the sliding opening in the top surface of the base (1) is also provided with an upwardly inclined slope slag baffle (12) facing the sliding opening, and the top of the slope slag baffle (12) is close to the lower part of the inner side surface of the vertical column (82) of the "U"-shaped push plate frame (8).

5. The ammonium sulfate plate heat exchanger according to claim 1, characterized in that: The outer side surface of the vertical column (82) of the "U"-shaped push plate frame (8) is also provided with a "U"-shaped push plate frame control handle (13) for controlling the advance and retreat and opening and closing of the "U"-shaped push plate frame (8).

6. The ammonium sulfate plate heat exchanger according to claim 5, characterized in that: The "U"-shaped push plate frame control handle (13) is in sliding connection with the vertical column (82) of the "U"-shaped push plate frame (8), and the "U"-shaped push plate frame control handle (13) can slide in the vertical direction.

7. The ammonium sulfate plate heat exchanger according to claim 1, characterized in that: The length of the short inserting column (10) is longer than the depth of the edge-shaped gap between the board pieces (5), and one end of the short inserting column (10) opposite to the edge-shaped gap is also provided with a buffer and sound-absorbing rubber pad.

8. The ammonium sulfate plate heat exchanger according to claim 1, characterized in that: The plate piece (5) comprises common plate pieces (51) and support plate pieces (52), the support plate pieces (52) are arranged between the common plate pieces (51), one support plate piece (52) is arranged every 15-20 common plate pieces (51), side limiting type fixing short columns (14) are arranged on the two sides of the support plate piece (52), support plate piece limiting fixing rods (15) are arranged on the two sides of the plate piece (5) between the fixed clamping plate (4) and the movable clamping plate (6), one end of the support plate piece limiting fixing rod (15) penetrates the fixed clamping plate (4) and is screw-connected with the fixed clamping plate (4), the other end of the support plate piece limiting fixing rod (15) is inserted with the movable clamping plate (6), side rotating insertion positioning short columns (16) are arranged on the positions of the inner side of the support plate piece limiting fixing rod (15) opposite the side limiting type fixing short columns (14), the side rotating insertion positioning short column (16) penetrates the support plate piece limiting fixing rod (15) and is screw-connected with the support plate piece limiting fixing rod (15), the inner end face of the side rotating insertion positioning short column (16) is provided with an insertion limiting groove matched with the side limiting type fixing short column (14).

9. The ammonium sulfate plate heat exchanger according to claim 8, characterized in that: The thickness of the support plate piece (52) is 1.5 times the thickness of the common plate piece (51).

10. The ammonium sulfate plate heat exchanger of claim 1, wherein: The inclination angle of the corrugation of the plate piece (5) is 75-80°.

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