Heat exchanger with convenient replacement of heat exchange tubes

Abstract

The present invention provides a heat exchanger that is easy to replace heat exchange tubes, belongs to the technical field of heat exchangers, and comprises an object body, a cover body, a leak-proof unit and a connecting unit; the object body and the cover body are embedded to achieve the purpose of preliminary connection; a groove extending around direction A is reserved on the outer peripheral surface of the object body, and the positioning port is located on the side of the cover body near the end of the groove connected thereto; the connecting unit is screwed onto the outer wall surface of the cover body and is constrained by the cover body to move toward direction A, and a leak-proof storage cavity with a variable storage space is arranged between the connecting unit and the cover body. The present invention solves the problem that existing heat exchangers that are easy to replace heat exchange tubes achieve rapid replacement of internal heat exchange tubes through the cooperation of threaded rods and nuts, are relatively cumbersome to use, and no leak-proof component is installed between the outer shell and the clamping ring, which cannot ensure the leak-proof performance of the heat exchanger and is not conducive to the normal operation of the heat exchanger.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and in particular relates to a heat exchanger with convenient heat exchange tube replacement. Background Art

[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, allowing the fluid temperature to reach the specified indicators of the process to meet the needs of process conditions. It is also one of the main devices for improving energy utilization.

[0003] Prior art CN221630466U discloses a heat exchanger that is easy to replace heat exchange tubes, including an object body, one side of the object body is fixedly connected to a clamping ring, one end of the object body is movably clamped and provided with a shell, one side of the object body is fixedly connected to a pipe group, the outer surface of the shell is fixedly connected to an inlet and outlet assembly, the bottom surface of the shell is fixedly connected to a support rod, one side of the object body is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to a nut, one side of the nut is movably connected to a threaded rod, and one side of the shell is fixedly connected to a limit block. The heat exchanger realizes the rapid replacement of its internal heat exchange tubes through the cooperation of the threaded rod and the nut. During the assembly and disassembly process, the staff need to repeatedly twist the threaded rod or nut to perform assembly or disassembly, which is relatively cumbersome to use. In addition, there is no leak-proof component installed between the shell and the clamping ring. Therefore, the leak-proof performance of the heat exchanger cannot be guaranteed, which may not only cause heat loss, but also cause internal material to overflow, which is not conducive to the normal operation of the heat exchanger. Summary of the Invention

[0004] The present invention provides a heat exchanger that is easy to replace heat exchange tubes. The purpose of the present invention is to solve the problem that the existing heat exchanger that is easy to replace heat exchange tubes realizes the rapid replacement of its internal heat exchange tubes through the cooperation of threaded rods and nuts. During the assembly and disassembly process, the staff need to repeatedly twist the threaded rods or nuts to perform assembly or disassembly, which is cumbersome to use, and no leak-proof component is installed between the outer shell and the clamping ring. Therefore, the leak-proof performance of the heat exchanger cannot be guaranteed, which may not only cause heat loss, but also cause overflow of internal materials, which is not conducive to the normal operation of the heat exchanger.

[0005] An embodiment of the present invention provides a heat exchanger that facilitates the replacement of heat exchange tubes, comprising an object body, a cover body, a leak-proof unit, and a connecting unit;

[0006] The object body and the cover body are engaged with each other to achieve the purpose of preliminary connection. The direction of the engagement between the object body and the cover body is set as direction A. The cover body and the object body cooperate with each other and cannot rotate.

[0007] A groove extending in a direction A is reserved on the outer peripheral surface of the object body, the groove being arc-shaped, one end of the groove being connected to the end of the object body close to the cover, and the other end of the groove being connected to a positioning opening reserved on the outer surface of the object body, the positioning opening being located on the side of the cover close to the end of the groove connected thereto;

[0008] The connecting unit is screwed onto the outer wall of the cover and is constrained by the cover to move in direction A. A positioning post is installed in the connecting unit to cooperate with the channel. A storage cavity with a leak-proof and variable storage space is installed between the connecting unit and the cover.

[0009] The leak-proof unit includes a silicone ring, an inner ring, and a circular ring that are hoop-connected to the outer peripheral surface of the cover and connected in sequence along direction A. The silicone ring is located on the side of the inner ring close to the object body and is used to tightly adhere to the wall surface of the object body. In the beginning, the wall surface of the silicone ring farther from the inner ring is a vertical surface. The circular ring is used to tightly adhere to the connecting unit and rotate along with the connecting unit. The inner ring has a plurality of concave surfaces and arched surfaces arranged at intervals along direction A. A plurality of rubber blocks that are not connected to each other are installed in the circular ring. The rubber blocks are hollow inside. Each of the rubber blocks is designed to allow a portion of the inner ring corresponding to it to arch toward the side close to the silicone ring. Each of the rubber blocks is connected to the storage cavity.

[0010] Before the object body and the cover body are embedded, the storage cavity between the connecting unit and the cover body is expanded to discharge the air in the rubber block into the storage cavity, so that the rubber block shrinks, and then the wall thickness of the inner ring in the direction A becomes smaller. After the object body and the cover body are connected, the storage space of the storage cavity between the connecting unit and the cover body is reduced, and the air in the storage cavity flows into the rubber block, so that the wall thickness of the inner ring in the direction A becomes larger again.

[0011] Furthermore, the connecting unit includes a rotating sleeve 1 and a rotating sleeve 2, the centers of the rotating sleeve 1 and the rotating sleeve 2 are collinear and are both arranged along the direction A, the rotating sleeve 1 and the rotating sleeve 2 can rotate together around the cover body and can move relatively along the direction A, the rotating sleeve 1 is located on the side of the rotating sleeve 2 close to the object body, and the positioning column is fixedly connected to the inside of the rotating sleeve 1.

[0012] Furthermore, the object body comprises an inner shell, a blocking plate and a pipe group, the groove and the positioning port are reserved on the outer peripheral wall of the inner shell, the blocking plate is fixedly connected to the inner side of the inner shell, and the pipe group is fixedly connected to the blocking plate;

[0013] The cover body includes an outer shell and a ring-shaped shell. The ring-shaped shell is fixedly connected to one end inside the outer shell. The outer side of the outer shell, which is farther away from the object body, is fixedly connected to a pair of air outlet components in a mirror-image manner. The outer side of the outer shell is also fixedly connected to the inlet and outlet components, and the inlet and outlet components are located between the pair of air outlet components.

[0014] Furthermore, one end of the annular shell close to the sealing plate extends out of the outer shell; when the object body and the cover body are embedded, the inner shell is clamped to the outside of the annular shell, is in the rotating sleeve, and is pressed tightly with the leak-proof unit clamped on the outer shell.

[0015] Furthermore, a circular groove is reserved on the outer circumferential surface of the outer shell, and a barrier sleeve is installed on the inner circumferential surface of the rotating sleeve 1 to cooperate with the rotation of the circular groove. The circular groove constrains the rotating sleeve 1 to move along the direction A; the leakage-proof unit is connected to the outer circumferential surface of the outer shell and is located on the side of the circular groove close to the object body, and each is pressed tightly against the barrier sleeve and the wall of the inner shell.

[0016] Furthermore, a plurality of escape openings are reserved on the outer side of the outer shell and on the peripheral wall corresponding to the circular ring on the leak-proof unit, and the escape openings are used to receive the expanded rubber blocks.

[0017] Furthermore, each of the rubber blocks is connected to a channel, and each of the channels penetrates the barrier sleeve and is connected to the storage cavity.

[0018] Furthermore, the inner shell and the ring-shaped shell cooperate via the socket along direction A to restrict the inner shell and the ring-shaped shell from rotating with each other.

[0019] Furthermore, the rotating sleeve 1 and the rotating sleeve 2 cooperate with each other via the socket along the direction A, so that the rotating sleeve 1 and the rotating sleeve 2 can rotate together and move along the direction A.

[0020] Furthermore, a number of the grooves and positioning openings are reserved on the outer peripheral wall of the inner shell, and a number of positioning posts are correspondingly provided on the rotating sleeve.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention installs a rubber block in the circular ring on the leak-proof unit. Before the object body and the cover body are embedded, the rubber block is made to shrink, and the wall thickness of the leak-proof unit in the direction A becomes smaller, thereby reducing the obstruction between the object body and the leak-proof unit. In addition, the leak-proof unit cannot bring a significant obstruction to the movement of the positioning column in the groove, which in a certain aspect weakens the damage of the positioning column to the groove. After the object body and the cover body are successfully connected, the rubber block is then allowed to expand, and then the wall surface of the leak-proof unit in the direction A has a momentum to expand, thereby enhancing the close contact between the object body and the connection unit, thereby ensuring the connection between the object body and the cover body; the object body and During the approach of the cover body, the space formed by the inner shell, the sealing plate and the annular shell gradually becomes smaller, and the air in the compression space flows through the gap between the inner shell and the annular shell, passes through the area where the inner shell and the leak-proof unit are pressed, and then leaks out from the gap between the inner shell and the rotating sleeve, and cleans out the debris at the contact point between the leak-proof unit and the inner shell, to avoid the weakening of the leak-proof function caused by the debris; the installation of the avoidance port can provide a storage area for the rubber block in the direction of the circular radius, and the rubber block embedded in the avoidance port can further restrain the connection unit from rotating around the outer shell, further strengthening the reliability of the connection between the object body and the cover body, and ensuring the leak-proof performance after the object body is assembled.

[0023] 2. When the heat exchange tube needs to be replaced, the positioning column is taken out from the positioning port, and the object body and the cover body can be disassembled. Then, the pipe group inside can be replaced, making the replacement of the heat exchange tube more convenient.

[0024] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 Schematic diagram of the rear structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the main three-dimensional structure of an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the side structure of an embodiment of the present invention;

[0030] Figure 5 For the embodiment of the present invention Figure 4 Schematic diagram of the cross-sectional structure in the MM direction;

[0031] Figure 6 Schematic diagram of the structure of the leakage prevention unit according to an embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the cross-sectional structure of the leakage prevention unit according to an embodiment of the present invention;

[0033] Figure 8 For the embodiment of the present invention Figure 4 Schematic diagram of the inner ring structure;

[0034] Figure numerals: 1. Object body; 11. Inner shell; 111. Groove; 112. Positioning port; 12. Sealing plate; 13. Pipe group; 2. Cover; 21. Outer shell; 211. Annular groove; 212. Escape port; 22. Annular shell; 3. Leak-proof unit; 31. Silicone ring; 32. Inner ring; 33. Circular ring; 331. Rubber block; 332. Channel; 4. Connecting unit; 41. Rotating sleeve 1; 411. Barrier sleeve; 42. Rotating sleeve 2; 43. Storage cavity; 44. Positioning column; 5. Air outlet assembly; 6. Material inlet and outlet assembly. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figures 1-8 An embodiment of the present invention provides a heat exchanger that is convenient for replacing heat exchange tubes, including an object body 1, a cover body 2, a leak-proof unit 3 and a connecting unit 4.

[0037] The object body 1 and the cover body 2 are embedded to achieve the purpose of preliminary connection. The embedding direction of the object body 1 and the cover body 2 is set as direction A; the cover body 2 and the object body 1 cooperate with each other and cannot rotate.

[0038] Reference Figure 3A groove 111 extending in the direction A is reserved on the outer peripheral surface of the object body 1. The groove 111 is arc-shaped. One end of the groove 111 is connected to the end of the object body 1 close to the cover body 2, and the other end of the groove 111 is connected to the positioning port 112 reserved on the outer surface of the object body 1; the positioning port 112 is located at the end of the groove 111 connected to it, close to the cover body 2.

[0039] Reference Figure 2 and Figure 3 The connecting unit 4 is screwed onto the outer wall of the cover body 2 and is constrained by the cover body 2 to move in direction A. A positioning column 44 is installed in the connecting unit 4 to cooperate with the groove 111; a leak-proof storage cavity 43 with a variable accommodating space is installed between the connecting unit 4 and the cover body 2.

[0040] Reference Figure 5-Figure 8 The leak-proof unit 3 includes a silicone ring 31, an inner ring 32 and a circular ring 33 which are hoop-connected to the outer circumference of the cover body 2 and connected in sequence along direction A; the silicone ring 31 is located on the side of the inner ring 32 close to the object body 1, and is used to fit tightly against the wall surface of the object body 1, and at the beginning, the wall surface of the silicone ring 31 farther from the inner ring 32 is a vertical surface; the circular ring 33 is used to fit tightly against the connecting unit 4 and rotate with the connecting unit 4, and the circular ring 33 is made of TPE material; the inner ring 32 has a plurality of concave surfaces and arched surfaces arranged at intervals along direction A, and a plurality of rubber blocks 331 which are not connected to each other are installed in the circular ring 33. The rubber blocks 331 are hollow inside, and each rubber block 331 is designed to allow a portion of the corresponding inner ring 32 to arch toward the side close to the silicone ring 31; each rubber block 331 is connected to the storage cavity 43. The concave and convex surfaces of the inner ring 32 along direction A create several concave surfaces on the side of the inner ring 32 closest to the circular ring 33. Rubber blocks 331 are placed on the circular ring 33 on the concave surfaces corresponding to the inner ring 32. As the rubber blocks 331 expand, the wall thickness of this concave area of ​​the inner ring 32 along direction A increases again. As the rubber blocks 331 contract, the connection between the circular ring 33 and the inner ring 32 causes the wall thickness of this concave area of ​​the inner ring 32 along direction A to decrease again. Furthermore, a storage space is reserved within the circular ring 33 to replace the rubber blocks 331. By expanding and contracting the reserved storage space on the circular ring 33, the same function as the rubber blocks 331 is achieved.

[0041] Before the object body 1 and the cover body 2 are engaged, the storage cavity 43 between the connecting unit 4 and the cover body 2 is expanded, and the air in the rubber block 331 is discharged into the storage cavity 43, causing the rubber block 331 to shrink, and then the wall thickness of the inner ring 32 in the direction A becomes smaller. Moreover, because the inner ring 32 is connected to the silicone ring 31, the shape of the inner ring 32 changes again, and the wall surface of the silicone ring 31 farther from the inner ring 32 becomes a wall surface with alternating concave and arched surfaces. Then, the connecting unit 4 is rotated while the object body 1 and the cover body 2 are approaching each other, so that the positioning post 44 and the groove 111 cooperate with each other. During the rotation of the connecting unit 4, the positioning post 44 cooperates with the groove 111 to allow the object body 1 to approach the cover body 2. Before the positioning post 44 moves to the positioning opening 112, the object body 1 and the leak-proof unit 3 are in close contact. As the leak-proof unit 3 rotates along with the connecting unit 4, the concave and arched surfaces of the silicone ring 31 on the leak-proof unit 3 clean the wall surface of the object body 1. The object body 1 then approaches the cover body 2, causing the leak-proof unit 3 to be compressed and changed in shape. When the positioning post 44 then moves to the positioning opening 112, the leak-proof unit 3 has been compressed and deformed by the object body 1. When the positioning post 44 and the groove 111 are disassembled, the leak-proof unit 3, under the cooperation of its own deformation force, causes the object body 1 to move a short distance toward the side farther from the cover body 2, thereby allowing the positioning post 44 and the positioning opening 112 to cooperate. Because the positioning opening 112 is located at the end of the groove 111 connected to it, close to the cover body 2, the positioning post 44 cannot easily cooperate with the groove 111 under the obstruction of the leak-proof unit 3, thereby allowing the object body 1 and the cover body 2 to be connected. The storage space 43 between the connecting unit 4 and the cover body 2 is then reduced and restored to its original appearance. The air in the storage cavity 43 flows into the rubber block 331, causing the wall thickness of the inner ring 32 in the direction A to increase again, thereby pressing the object body 1 and the connecting unit 4 tighter, and the connection between the object body 1 and the cover body 2 is more secure.

[0042] By installing a rubber block 331 in the ring 33 of the leak-proof unit 3, the rubber block 331 is allowed to shrink before the main body 1 and the cover 2 are engaged, reducing the wall thickness of the leak-proof unit 3 along the direction A. This reduces the obstruction between the main body 1 and the leak-proof unit 3, and prevents the leak-proof unit 3 from significantly obstructing the movement of the positioning post 44 in the channel 111, thereby reducing the damage caused by the positioning post 44 to the channel 111. After the main body 1 and the cover 2 are successfully engaged, the rubber block 331 is then allowed to expand, which in turn increases the wall surface of the leak-proof unit 3 along the direction A, enhancing the close fit between the main body 1 and the engagement unit 4, and thus ensuring the engagement between the main body 1 and the cover 2.

[0043] Reference Figure 1-Figure 3 and Figure 5The connecting unit 4 includes a rotating sleeve 1 41 and a rotating sleeve 2 42 . The centers of the rotating sleeves 1 41 and 2 42 are collinear and arranged along a direction A. The rotating sleeves 1 41 and 2 42 can rotate together around the housing 2 and can move relative to each other along the direction A. The rotating sleeve 1 41 is located on the side of the rotating sleeve 2 42 closest to the object body 1 , and a positioning post 44 is fixedly connected to the inside of the rotating sleeve 1 41 . A storage cavity 43 is reserved between the rotating sleeves 1 41 and 2 42 and the housing 2 . When the rotating sleeves 1 41 and 2 42 move away from each other, the storage cavity 43 expands, drawing air out of the rubber block 331 . When the rotating sleeves 1 41 and 2 42 move toward each other, the storage cavity 43 contracts, forcing air into the rubber block 331 . The outer walls of the first and second rotating sleeves 41, 42 are each provided with opposing slopes. Pressing the first and second rotating sleeves 41, 42 against each other along these slopes compresses and pushes them away from each other. When the compressive force on the first and second rotating sleeves 41, 42 is released, the rubber block 331 recovers and expands, removing air from the storage chamber 43. Furthermore, a spiral beryllium copper wire can be installed between the first and second rotating sleeves 41, 42. After the main body 1 and the cover 2 are successfully connected, the first and second rotating sleeves 41, 42 can be brought closer together, allowing the rubber block 331 to recover and expand. Among them, leak-proof rings are installed between the rotating sleeve 1 41, the rotating sleeve 2 42 and the cover body 2. The rotating sleeve 1 41 and the rotating sleeve 2 42 can be connected via a telescopic tube to ensure that the storage chamber 43 remains closed when they are separated from each other.

[0044] Reference Figure 1 and Figure 5 The main body 1 includes an inner shell 11, a sealing plate 12, and a pipe assembly 13. A channel 111 and a positioning port 112 are reserved on the outer peripheral wall of the inner shell 11. The sealing plate 12 is fixedly connected to the inside of the inner shell 11, and the pipe assembly 13 is fixedly connected to the sealing plate 12. The cover 2 includes an outer shell 21 and a ring-shaped shell 22. The ring-shaped shell 22 is fixedly connected to one end of the inner side of the outer shell 21.

[0045] Reference Figure 5The end of the annular shell 22 closest to the sealing plate 12 extends out of the outer shell 21. When the object body 1 and the cover body 2 are engaged, the inner shell 11 is clamped onto the outside of the annular shell 22 and positioned within the rotating sleeve 41. It is also compressed against the leak-proof unit 3 clamped onto the outer shell 21. A pair of air outlet assemblies 5 are fixedly connected to the outer end of the outer shell 21, mirroring the end farther from the object body 1. The outer side of the outer shell 21 is also fixedly connected to the inlet and outlet assembly 6, which is located between the pair of air outlet assemblies 5. Because the inner shell 11 and the annular shell 22, and the inner shell 11 and the rotating sleeve 41 are not completely sealed, when the object body 1 and the cover body 2 are close, the space formed by the inner shell 11, the sealing plate 12 and the annular shell 22 gradually becomes smaller, and the air in the compression space flows through the gap between the inner shell 11 and the annular shell 22, passes through the area where the inner shell 11 and the leak-proof unit 3 are pressed, and then leaks out from the gap between the inner shell 11 and the rotating sleeve 41, and cleans out the debris at the contact point between the leak-proof unit 3 and the inner shell 11, to avoid the weakening of the leak-proof function caused by the debris.

[0046] Reference Figure 2 and Figure 3 A circular groove 211 is reserved on the outer circumferential surface of the outer shell 21, and a barrier sleeve 411 is installed on the inner circumferential surface of the rotating sleeve 41 to cooperate with the circular groove 211 in rotation. The circular groove 211 constrains the rotating sleeve 41 to move along the direction A; the leakage-proof unit 3 is hoop-connected to the outer circumferential surface of the outer shell 21 and is located on the side of the circular groove 211 close to the object body 1, and each is pressed tightly against the barrier sleeve 411 and the wall of the inner shell 11.

[0047] Reference Figure 3 Several escape openings 212 are reserved on the outer side of the outer shell 21, corresponding to the circular ring 33 on the leak-proof unit 3. These escape openings 212 are used to accommodate the expanded rubber block 331. After the main body 1 and the cover 2 are successfully engaged, the storage cavity 43 recovers and shrinks, and the rubber block 331 recovers and expands. However, due to the constraints of the inner shell 11 and the barrier sleeve 411, the expansion range of the rubber block 331 along the direction A is limited. The installation of the escape openings 212 provides a storage area for the rubber block 331 along the radius of the circular ring 33. Furthermore, the rubber block 331 embedded in the escape openings 212 further restricts the connection unit 4 from rotating around the outer shell 21, further strengthening the connection between the main body 1 and the cover 2.

[0048] Reference Figure 6 and Figure 7 Each rubber block 331 is connected to a channel 332 , and each channel 332 penetrates the barrier sleeve 411 and is connected to the storage cavity 43 , allowing the leak-proof unit 3 to rotate along with the rotating sleeve 41 .

[0049] Reference Figure 3 and Figure 5The inner shell 11 and the ring shell 22 cooperate via the socket along the direction A to restrict the rotation between the inner shell 11 and the ring shell 22.

[0050] Reference Figure 5 The rotating sleeve 1 41 and the rotating sleeve 2 42 cooperate with each other through the socket along the direction A, so that the rotating sleeve 1 41 and the rotating sleeve 2 42 can rotate together and move along the direction A.

[0051] Reference Figure 3 A plurality of grooves 111 and positioning openings 112 are reserved on the outer peripheral wall of the inner shell 11, and a plurality of positioning posts 44 on the rotating sleeve 41 are correspondingly provided.

[0052] The embodiment is as follows: during use, when the object body 1 and the cover body 2 are assembled, the rotating sleeve 1 41 and the rotating sleeve 2 42 are pressed along a pair of facing slopes, causing the rotating sleeve 1 41 and the rotating sleeve 2 42 to move away from each other, thereby increasing the storage space of the storage cavity 43, sucking the air in the rubber block 331 into the storage cavity 43, causing the rubber block 331 to become smaller, and then reducing the wall thickness of the inner ring 32 in the direction A. The inner ring 32 further changes its shape, causing the side of the silicone ring 31 farther from the inner ring 32 to become a wall surface with a concave surface and an arched surface.

[0053] Then, the positioning post 44 is made to cooperate with the groove 111, and the rotating sleeve 1 41 and the rotating sleeve 2 42 are rotated, so that the positioning post 44 pulls the object body 1 close to the cover body 2 under the cooperation with the groove 111. Before the positioning post 44 changes to the positioning port 112, the object body 1 and the silicone ring 31 on the leak-proof unit 3 are pressed tightly. When the leak-proof unit 3 rotates along with the connecting unit 4, the silicone ring 31 on the leak-proof unit 3 has a concave surface and an arched surface alternating with the wall surface of the object body 1 to perform decontamination, and the debris during the decontamination is discharged along with the air pressed out from the space formed by the inner shell 11, the sealing plate 12 and the ring shell 22, and the object body The body 1 then approaches the cover body 2, causing the leak-proof unit 3 to be compressed and changed in shape. When the positioning post 44 then moves to the positioning opening 112, the leak-proof unit 3 has been compressed and changed in shape by the object body 1. When the positioning post 44 and the groove 111 separate, the leak-proof unit 3 causes the object body 1 to move a short distance away from the cover body 2 under the action of its own deformation, thereby allowing the positioning post 44 and the positioning opening 112 to cooperate. Because the positioning opening 112 is located on the side of the cover body 2 at the end of the groove 111 connected to it, the positioning post 44 cannot easily cooperate with the groove 111 under the obstruction of the leak-proof unit 3, thereby allowing the object body 1 and the cover body 2 to be connected.

[0054] When the first and second rotating sleeves 41 and 42 are released, the storage cavity 43 has a tendency to shrink and return to its initial state, and the rubber block 331 has a tendency to recover and change its shape and expand. The space inside the storage cavity 43 flows into the rubber block 331, making the wall thickness of the inner ring 32 in the direction A increase again, so that the object body 1 and the connecting unit 4 can be pressed more firmly. However, due to the constraints of the inner shell 11 and the barrier sleeve 411, the expansion range of the rubber block 331 in the direction A is limited. The rubber block 331 increases in the direction of the radius of the ring 33 and cuts into the avoidance opening 212, thereby again restricting the connecting unit 4 from rotating outside the outer shell 21, and further strengthening the reliability of the connection between the object body 1 and the cover body 2.

[0055] When the heat exchange tube needs to be replaced, the positioning column 44 is removed from the positioning port 112, and the object body 1 and the cover body 2 can be disassembled. Then the internal pipe group 13 can be replaced, and finally the above steps can be followed to assemble it again, making the replacement of the heat exchange tube more convenient.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger that is easy to replace heat exchange tubes, characterized in that: It includes an object body, a cover body, a leak-proof unit and a connecting unit; The object body and the cover body are engaged with each other to achieve the purpose of preliminary connection. The direction of the engagement between the object body and the cover body is set as direction A. The cover body and the object body cooperate with each other and cannot rotate. A groove extending in a direction A is reserved on the outer peripheral surface of the object body, the groove being arc-shaped, one end of the groove being connected to the end of the object body close to the cover, and the other end of the groove being connected to a positioning opening reserved on the outer surface of the object body, the positioning opening being located on the side of the cover close to the end of the groove connected thereto; The connecting unit is screwed on the outer wall of the cover and is constrained by the cover to move in the direction A. A positioning column for cooperating with the channel is installed in the connecting unit. A leak-proof storage cavity with a variable storage space is installed between the connecting unit and the cover. The leak-proof unit includes a silicone ring, an inner ring, and a circular ring that are hoop-connected to the outer peripheral surface of the cover and connected in sequence along direction A. The silicone ring is located on the side of the inner ring close to the object body and is used to tightly adhere to the wall surface of the object body. In the beginning, the wall surface of the silicone ring farther from the inner ring is a vertical surface. The circular ring is used to tightly adhere to the connecting unit and rotate along with the connecting unit. The inner ring has a plurality of concave surfaces and arched surfaces arranged at intervals along direction A. A plurality of rubber blocks that are not connected to each other are installed in the circular ring. The rubber blocks are hollow inside. Each of the rubber blocks is designed to allow a portion of the inner ring corresponding to it to arch toward the side close to the silicone ring. Each of the rubber blocks is connected to the storage cavity. Before the object body and the cover body are embedded, the storage cavity between the connecting unit and the cover body is expanded to discharge the air in the rubber block into the storage cavity, so that the rubber block shrinks, and then the wall thickness of the inner ring in the direction A becomes smaller. After the object body and the cover body are connected, the storage space of the storage cavity between the connecting unit and the cover body is reduced, and the air in the storage cavity flows into the rubber block, so that the wall thickness of the inner ring in the direction A becomes larger again.

2. A heat exchanger for facilitating heat exchange tube replacement according to claim 1, characterized in that: The connecting unit includes a rotating sleeve 1 and a rotating sleeve 2. The centers of the rotating sleeve 1 and the rotating sleeve 2 are collinear and are both arranged along the direction A. The rotating sleeve 1 and the rotating sleeve 2 can rotate together around the cover body and can move relative to each other along the direction A. The rotating sleeve 1 is located on the side of the rotating sleeve 2 close to the object body, and the positioning column is fixedly connected to the inside of the rotating sleeve 1.

3. The heat exchanger with easy heat exchange tube replacement according to claim 2, characterized in that: The object body includes an inner shell, a blocking plate and a pipe group, the groove and the positioning port are reserved on the outer peripheral wall of the inner shell, the blocking plate is fixedly connected to the inner side of the inner shell, and the pipe group is fixedly connected to the blocking plate; The cover body includes an outer shell and a ring-shaped shell. The ring-shaped shell is fixedly connected to one end inside the outer shell. The outer side of the outer shell, which is farther away from the object body, is fixedly connected to a pair of air outlet components in a mirror-image manner. The outer side of the outer shell is also fixedly connected to the inlet and outlet components, and the inlet and outlet components are located between the pair of air outlet components.

4. The heat exchanger with easy heat exchange tube replacement according to claim 3, characterized in that: The end of the ring-shaped shell close to the sealing plate extends out of the outer shell; when the object body and the cover body are embedded, the inner shell is clamped on the outside of the ring-shaped shell, is in the rotating sleeve, and is tightly pressed against the leak-proof unit clamped on the outer shell.

5. The heat exchanger with easy heat exchange tube replacement according to claim 4, characterized in that: A circular groove is reserved on the outer circumferential surface of the outer shell, and a barrier sleeve is installed on the inner circumferential surface of the rotating sleeve 1 to cooperate with the circular groove in rotation. The circular groove constrains the rotating sleeve 1 to move along the direction A; the leakage-proof unit is connected to the outer circumferential surface of the outer shell and is located on the side of the circular groove close to the object body, and each is pressed tightly against the barrier sleeve and the wall of the inner shell.

6. The heat exchanger with easy heat exchange tube replacement according to claim 5, characterized in that: A plurality of escape openings are reserved on the outer side of the outer shell and on the peripheral wall corresponding to the circular ring on the leak-proof unit. The escape openings are used to receive the expanded rubber blocks.

7. The heat exchanger with easy heat exchange tube replacement according to claim 6, characterized in that: Each of the rubber blocks is connected to a channel, and each of the channels penetrates the barrier sleeve and is connected to the storage cavity.

8. The heat exchanger with easy heat exchange tube replacement according to claim 7, characterized in that: The inner shell and the ring shell cooperate via the socket along the direction A to restrict the rotation between the inner shell and the ring shell.

9. The heat exchanger with easy heat exchange tube replacement according to claim 8, characterized in that: The rotating sleeve 1 and the rotating sleeve 2 cooperate with each other via the socket along the direction A, so that the rotating sleeve 1 and the rotating sleeve 2 can rotate together and move along the direction A.

10. The heat exchanger with easy heat exchange tube replacement according to claim 9, characterized in that: A plurality of grooves and positioning openings are reserved on the outer peripheral wall of the inner shell, and a plurality of positioning posts are correspondingly provided on the rotating sleeve.

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