Floating head heat exchanger easy to clean

Abstract

The utility model relates to the technical field of heat exchangers, and discloses an easy-to-clean floating head heat exchanger, which comprises a spring with one end fixedly connected to the inner side wall of a cavity; the sliding rod is fixedly connected to the other end of the spring; the connecting ring is fixedly connected to the side wall, close to the heat exchanger body, of the floating head; the limiting rod is fixedly connected to the side wall, close to the connecting plate, of the connecting ring; and the limiting block is fixedly connected to the limiting rod. A worker pushes a push rod towards the inner side, the push rod drives a sliding rod to move, the sliding rod is separated from the middle area of a limiting rod and a limiting block, at the moment, the limiting rod is not limited by the sliding rod, the floating head can be moved towards the left side, and the floating head is detached from the heat exchanger body; a worker directly aligns the limiting rod on the floating head to the cavity, moves the floating head and inserts the limiting rod into the cavity, when the limiting rod is inserted, the sliding rod automatically moves to the position between the limiting rod and the limiting block, the floating head is limited and fixed through the sliding rod, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to an easy-to-clean floating head heat exchanger. Background Art

[0002] In a floating-head heat exchanger, only one end of the tubesheet is fixed to the shell, while the other end is free to move relative to the shell. This is called a floating head. The floating head consists of a floating tubesheet, a hook ring, and a floating head end cap. The connection is removable, allowing the tube bundle to be withdrawn from the shell. Thermal deformation of the tube bundle and the shell is independent of each other, thus preventing thermal stress.

[0003] After a heat exchanger has been used for a long time, scaling is likely to form on the inner wall of the tube shell, which reduces the heat exchange efficiency and affects the heat conduction effect and service life. Workers often remove the floating head first to facilitate cleaning of the scale on the internal tube wall. However, the existing technology uses a large number of bolts to fix the floating head, which increases the time for workers to disassemble and assemble the floating head, reduces the disassembly and assembly efficiency, and is inconvenient for subsequent cleaning. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides an easy-to-clean floating head heat exchanger with the advantage of convenient loading and unloading of the floating head. It solves the problem that when the existing heat exchanger tube wall needs to be cleaned, the floating head part is generally disassembled, but the existing heat exchanger uses a large number of bolts to fix the floating head, which reduces the disassembly and assembly efficiency of the staff, thereby affecting the subsequent tube wall cleaning.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an easily cleanable floating head heat exchanger, comprising a main body component, the main body component comprising:

[0008] The heat exchanger body has a floating head on its left side;

[0009] A floating head tube sheet is provided on the inner side wall of the heat exchanger body;

[0010] The heat exchanger body and the floating head are provided with a loading and unloading assembly, and the loading and unloading assembly includes:

[0011] A connecting plate is provided on the left side wall of the heat exchanger body;

[0012] a cavity, formed on the left side wall of the connecting plate;

[0013] a spring, one end of which is fixedly connected to the inner wall of the cavity;

[0014] a sliding rod, fixedly connected to the other end of the spring;

[0015] A push rod, one end fixedly connected to the outer side wall of the sliding rod, and the other end passing through the cavity and extending to the outside of the connecting plate;

[0016] A connecting ring, fixedly connected to one side wall of the floating head close to the heat exchanger body;

[0017] A limiting rod, fixedly connected to one side wall of the connecting ring close to the connecting plate;

[0018] A limiting block, fixedly connected to the limiting rod.

[0019] Preferably, a sealing ring is fixedly connected to one side of the connecting ring close to the connecting plate, and a through groove is provided on the sealing ring.

[0020] Preferably, except for the connecting plate, the connecting ring and the sealing ring in the loading and unloading assembly, the rest of the components are arranged in multiple groups in a circumferential symmetry, and at least four groups are provided, and the limiting rods correspond to the cavities one by one.

[0021] Preferably, the distance between the limiting block and the limiting rod is equal to the diameter of the sliding rod.

[0022] Preferably, sliding grooves are symmetrically provided on the inner side wall of the cavity, and both ends of the sliding rod extend and slide in the sliding grooves.

[0023] Preferably, a cleaning assembly is provided on the floating head and the floating head tube sheet, and the cleaning assembly includes:

[0024] A rotating shaft, rotatably connected to the inner wall of the floating head;

[0025] A rotating sleeve, fixedly connected to one side of the floating head tube sheet close to the floating head, and the right end of the rotating shaft is rotatably connected to the rotating sleeve;

[0026] Rotating plates, symmetrically arranged on the outer side wall of the rotating shaft;

[0027] A brush plate, fixedly connected to one end of the rotating shaft close to the floating head tube sheet.

[0028] (III) Beneficial effects

[0029] Compared with the prior art, the present utility model provides a floating head heat exchanger that is easy to clean, and has the following beneficial effects:

[0030] This floating head heat exchanger has the advantage of being convenient for loading and unloading the floating head. When the staff pushes the push rod inward, the push rod drives the sliding rod to move. The sliding rod disengages from the middle area of the limiting rod and the limiting block. At this time, the limiting rod is not limited by the sliding rod and can move the floating head to the left to remove the floating head from the heat exchanger body. After the staff finishes cleaning the tube wall of the heat exchanger body, after the cleaning is completed, the staff directly aligns the limiting rod on the floating head with the cavity, moves the floating head, and inserts the limiting rod into the cavity. When the limiting rod is inserted, the sliding rod automatically moves between the limiting rod and the limiting block, and the sliding rod limits and fixes the floating head, making the operation relatively convenient. It solves the problem that when the tube wall of the existing heat exchanger needs to be cleaned, the floating head part is generally disassembled first, but the existing heat exchanger uses a large number of bolts to fix the floating head, which reduces the disassembly and assembly efficiency of the staff and thus affects the subsequent cleaning of the tube wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the present utility model;

[0032] Figure 2 is a schematic structural diagram of the floating head separation structure in the present utility model;

[0033] Figure 3 is a schematic cross-sectional structural diagram of the floating head and the heat exchanger body in the present utility model;

[0034] Figure 4 is a schematic enlarged structural diagram of part A in the present utility model;

[0035] Figure 5 is a schematic cross-sectional structural diagram of the cavity in the present utility model.

[0036] In the figure:

[0037] 1. Main body assembly; 11. Heat exchanger body; 12. Floating head; 13. Floating head tube sheet;

[0038] 2. Loading and unloading assembly; 21. Connecting plate; 211. Cavity; 22. Spring; 23. Sliding rod; 231. Push rod; 232. Chute; 24. Connecting ring; 25. Limiting rod; 26. Limiting block; 27. Sealing ring;

[0039] 3. Cleaning assembly; 31. Rotating shaft; 32. Rotating sleeve; 33. Rotating plate; 34. Brushing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0041] Embodiment 1

[0042] Refer to Figures 1-5 , an easy-to-clean floating head heat exchanger, including a main body assembly 1, and the main body assembly 1 includes: a heat exchanger body 11, with a floating head 12 provided on its left side; a floating head tube sheet 13, arranged on the inner side wall of the heat exchanger body 11; a loading and unloading assembly 2 is provided on the heat exchanger body 11 and the floating head 12, and the loading and unloading assembly 2 includes: a connecting plate 21, arranged on the left side wall of the heat exchanger body 11; a cavity 211, opened on the left side wall of the connecting plate 21; a spring 22, with one end fixedly connected to the inner side wall of the cavity 211; a sliding rod 23, fixedly connected to the other end of the spring 22; a push rod 231, with one end fixedly connected to the outer side wall of the sliding rod 23 and the other end passing through the cavity 211 and extending to the outside of the connecting plate 21; a connecting ring 24, fixedly connected to the side wall of the floating head 12 close to the heat exchanger body 11; a limiting rod 25, fixedly connected to the side wall of the connecting ring 24 close to the connecting plate 21; a limiting block 26, fixedly connected to the limiting rod 25. A sealing ring 27 is fixedly connected to the side of the connecting ring 24 close to the connecting plate 21, and a through groove is opened on the sealing ring 27. Except for the connecting plate 21, the connecting ring 24, and the sealing ring 27 in the loading and unloading assembly 2, the rest of the components are arranged in multiple groups in a circumferential symmetry, and at least four groups are provided, and the limiting rod 25 corresponds to the cavity 211 one by one.

[0043] During use, after the staff use the heat exchanger body 11 to cool and dissipate heat from the material, the heat exchanger body 11 is shut down. The staff use the loading and unloading component 2 to quickly load and unload the floating head 12, which is convenient for the staff to clean the inner wall of the heat exchanger body 11: The staff push the push rod 231 inward, and the push rod 231 drives the sliding rod 23 to move. The sliding rod 23 disengages from the middle area of the limiting rod 25 and the limiting block 26. At this time, the limiting rod 25 is not limited by the sliding rod 23 and can move the floating head 12 to the left to remove the floating head 12 from the heat exchanger body 11. After the staff finish cleaning the tube wall of the heat exchanger body 11, after cleaning, the staff directly align the limiting rod 25 on the floating head 12 with the cavity 211, move the floating head 12, and insert the limiting rod 25 into the cavity 211. When the limiting rod 25 is inserted, after the inclined surface contacts the sliding rod 23, the sliding rod 23 is pushed towards the spring 22 direction, and the spring 22 is compressed. When the sealing ring 27 on the floating head 12 fits with the connecting plate 21, at this time, the sliding rod 23, the limiting rod 25, and the middle area of the limiting block 26 are on the same horizontal line. The spring 22 pushes the sliding rod 23 to between the limiting rod 25 and the limiting block 26, and the sliding rod 23 limits and fixes the floating head 12, and the operation is relatively convenient. The sealing ring 27 seals the connection part between the connecting plate 21 and the connecting ring 24 to prevent liquid from leaking out and affecting the normal operation of the heat exchanger body 11. At least four groups of the cavity 211 and the limiting rod 25 are symmetrically arranged on the wall, so that at least four directions of the sliding rod 23 limit and fix the floating head 12, increasing the stability of the floating head 12 after being fixed. The heat exchange process of the above-mentioned heat exchanger body 11 is the prior art, and the specific structure will not be described again here.

[0044] Embodiment 2

[0045] On the basis of Embodiment 1, an auxiliary function is added.

[0046] Refer to Figures 1-5 , the distance between the limiting block 26 and the limiting rod 25 is equal to the diameter of the sliding rod 23. Symmetrically arranged sliding grooves 232 are formed on the inner side wall of the cavity 211, and both ends of the sliding rod 23 extend and slide in the sliding grooves 232. A cleaning component 3 is arranged on the floating head 12 and the floating head tube plate 13. The cleaning component 3 includes: a rotating shaft 31 rotatably connected to the inner wall of the floating head 12; a rotating sleeve 32 fixedly connected to one side of the floating head tube plate 13 close to the floating head 12, and the right end of the rotating shaft 31 is rotatably connected to the rotating sleeve 32; rotating plates 33 symmetrically arranged on the outer side wall of the rotating shaft 31; and a brush plate 34 fixedly connected to one end of the rotating shaft 31 close to the floating head tube plate 13.

[0047] The diameter of the sliding rod 23 is such that it cannot move freely after moving to the middle area between the limit rod 25 and the limit block 26, preventing it from affecting the stability after the floating head 12 is installed. When the sliding rod 23 moves, both ends slide in the chute 232. The chute 232 guides the movement of the sliding rod 23, preventing the sliding rod 23 from skewing during movement, and facilitating the quick and smooth entry or exit of the sliding rod 23 from the middle area between the limit rod 25 and the limit block 26. The cleaning assembly 3 cleans the floating head tube sheet 13 when the heat exchanger body 11 is operating: when the heat exchanger body 11 is operating, the cooled liquid enters the inside of the floating head 12 through the through holes above the floating head tube sheet 13. The liquid impacts the rotating plate 33 and then drives the rotating shaft 31 to rotate. The brush plate 34 on the rotating shaft 31 cleans the left side wall of the floating head tube sheet 13, facilitating the reduction of the subsequent cleaning pressure of the work.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating head heat exchanger that is easy to clean, comprising a main body assembly (1), and the main body assembly (1) includes: A heat exchanger body (11) with a floating head (12) provided on its left side; A floating head tube sheet (13) provided on the inner side wall of the heat exchanger body (11); It is characterized in that: an unloading and loading assembly (2) is provided on the heat exchanger body (11) and the floating head (12), and the unloading and loading assembly (2) includes: A connecting plate (21) provided on the left side wall of the heat exchanger body (11); A cavity (211) opened on the left side wall of the connecting plate (21); A spring (22) with one end fixedly connected to the inner side wall of the cavity (211); A sliding rod (23) fixedly connected to the other end of the spring (22); A push rod (231) with one end fixedly connected to the outer side wall of the sliding rod (23) and the other end passing through the cavity (211) and extending to the outside of the connecting plate (21); A connecting ring (24) fixedly connected to the side wall of the floating head (12) close to the heat exchanger body (11); A limiting rod (25) fixedly connected to the side wall of the connecting ring (24) close to the connecting plate (21); A limiting block (26) fixedly connected to the limiting rod (25).

2. The floating head heat exchanger that is easy to clean according to claim 1, wherein: A sealing ring (27) is fixedly connected to the side of the connecting ring (24) close to the connecting plate (21), and a through groove is opened on the sealing ring (27).

3. The floating head heat exchanger that is easy to clean according to claim 2, wherein: Except for the connecting plate (21), the connecting ring (24) and the sealing ring (27) in the unloading and loading assembly (2), the rest of the components are symmetrically arranged in multiple groups in a circumferential direction, and at least four groups are provided, and the limiting rods (25) correspond to the cavities (211) one by one.

4. The floating head heat exchanger according to claim 3, wherein: The distance between the limiting block (26) and the limiting rod (25) is equal to the diameter of the sliding rod (23).

5. The floating head heat exchanger that is easy to clean according to claim 4, wherein: Chute grooves (232) are symmetrically opened on the inner side wall of the cavity (211), and both ends of the sliding rod (23) extend and slide in the chute grooves (232).

6. The floating head heat exchanger that is easy to clean according to claim 5, wherein: A cleaning assembly (3) is provided on the floating head (12) and the floating head tube sheet (13), and the cleaning assembly (3) includes: A rotating shaft (31) rotatably connected to the inner wall of the floating head (12); A rotating sleeve (32) fixedly connected to the side of the floating head tube sheet (13) close to the floating head (12), and the right end of the rotating shaft (31) is rotatably connected to the rotating sleeve (32); Rotating plates (33) symmetrically arranged on the outer side wall of the rotating shaft (31); A brush plate (34) fixedly connected to one end of the rotating shaft (31) close to the floating head tube sheet (13).

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