Heat exchanger of washing, dyeing and dewatering all-in-one machine

Abstract

The invention relates to the technical field of heat exchange, in particular to a heat exchanger of a washing, dyeing and dewatering all-in-one machine, which comprises an exchanger main body capable of heating dye liquor and positioned outside the washing, dyeing and dewatering all-in-one machine, the exchanger main body comprises two tube boxes communicated with the washing, dyeing and dewatering all-in-one machine, and a shell is detachably connected between the two tube boxes; the shell is detachably connected with a plurality of heat exchange tubes which are communicated with the tube box and are used for dye liquor to pass through, and the shell is communicated with two shell pass tubes which are used for steam to enter or be sent out, so that the exchanger main body does not need to be disassembled when maintenance is needed, and maintenance work is convenient to carry out.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger for a washing, dyeing and drying machine. Background Art

[0002] After weaving, the fabric needs to be dyed. During the dyeing process, especially in winter when the temperature is low, the dye solution needs to be heated to ensure that the fabric is not prone to insufficient and uneven dyeing quality problems. In addition, when washing the fabric, the water also needs to be heated to make the fabric cleaner.

[0003] For example, in an environmentally friendly and energy-saving loose wool dyeing and dehydrating integrated machine with publication number CN108978070A, a dye liquor heating system consisting of a heating coil is installed in the main cylinder body for placing fibers to heat the dye liquor sent into the main cylinder body.

[0004] With regard to the above-mentioned related technologies, when a problem occurs with the heating coil located in the main cylinder body, that is, in the washing, dyeing and drying machine, the washing, dyeing and drying machine needs to be disassembled to take out the heating coil for maintenance, which is very inconvenient. Summary of the invention

[0005] In order to facilitate more convenient maintenance of the heating system for cloth dyeing, the present application provides a heat exchanger for a washing, dyeing and drying machine.

[0006] The heat exchanger of a washing, dyeing and drying machine provided in the present application adopts the following technical solution.

[0007] A heat exchanger for a washing, dyeing and drying machine comprises an exchanger body which can heat dye liquor and is located outside the washing, dyeing and drying machine. The exchanger body comprises two pipe boxes which are both connected to the washing, dyeing and drying machine. A shell is detachably connected between the two pipe boxes. The shell is detachably connected to a plurality of heat exchange tubes which are connected to the pipe boxes for the dye liquor to pass through. The shell is connected to two shell-side tubes for steam to enter or be sent out.

[0008] By adopting the above technical solution, the dye liquid is transported to the exchanger body located outside the washing, dyeing and drying machine to exchange heat with steam, so that when the exchanger body needs to be maintained, there is no need to disassemble the washing, dyeing and drying machine, which is more convenient.

[0009] Optionally, the two shell-side tubes are located at two ends of the shell in a one-to-one correspondence, and the shell axis is located between the two shell-side tubes.

[0010] By adopting the above technical solution, the steam is allowed to pass through the entire interior of the shell as much as possible before being sent out from the shell, so as to ensure that the temperature at various locations in the shell is relatively consistent.

[0011] Optionally, two rows of baffles are installed in the shell, the two rows of baffles are arranged in a staggered manner, and there is an overlapping area between the projections of the two rows of baffles on the end surface of the shell.

[0012] By adopting the above technical solution, the steam can be retained in the shell for a longer time, so that the heat of the steam can be more fully exchanged into the dye solution in the heat exchange tube.

[0013] Optionally, a drain valve is connected to the bottom of the shell, and the two rows of baffles are spaced apart from the shell on both sides.

[0014] By adopting the above technical solution, condensed water formed by steam in the shell can be discharged, and the baffle is not likely to cause excessive obstruction to the flow of condensed water.

[0015] Optionally, the two shell-side tubes are located at the highest and lowest points of the shell in a one-to-one correspondence, the higher shell-side tube is for steam to enter and the lower shell-side tube is for steam to exit, and the shell-side tube is located on the side where there is a gap between the baffle and the inner wall of the shell.

[0016] By adopting the above technical solution, the condensed water at the bottom of the shell can flow smoothly, and only when the shell is filled with steam, the steam in the shell will be discharged from the shell-side tube with a low height.

[0017] Optionally, there is a placement rack around the exchanger body, the placement rack is slidably connected to a height-adjusting rack whose height can be changed and is detachably connected to the exchanger body, the placement rack is detachably connected to a rack rack, the height-adjusting rack is rotatably connected to a rack gear meshing with the rack rack, and the height-adjusting rack is provided with a height-adjusting motor for driving the rack gear to rotate.

[0018] By adopting the above technical solution, when it is necessary to maintain the exchanger body, the frame is adjusted and moved downward to make the exchanger body close to the ground for easy maintenance.

[0019] Optionally, the rack gear is coaxially fixedly connected with a worm wheel rotatably connected to the height-adjusting rack, the worm wheel is meshed with a worm screw rotatably connected to the height-adjusting rack, and the worm screw is driven to rotate by the height-adjusting motor.

[0020] By adopting the above technical solution, the height-adjusting frame will not easily move down at will, thereby reducing the possibility of accidents.

[0021] Optionally, the shell-side inlet and outlet and the tube-side inlet and outlet of the exchanger body are both connected with a lower bend pipe, the bottom end of the lower bend pipe is close to the ground, and the circumferential outer wall of the bottom end of the lower bend pipe is connected with a drain valve.

[0022] By adopting the above technical solution, when it is necessary to lower the height of the exchanger body, the drain valve is first opened to release the fluid in the exchanger body, and the connection between the lower bend pipe and other corresponding medium pipelines is close to the ground, which is also convenient for disconnection, and there is no need to dismantle the corresponding pipelines at the shell side inlet and outlet and the tube side inlet and outlet of the exchanger body at a higher position.

[0023] Optionally, the lower bent pipe is divided into several sections in the vertical direction and is detachably connected.

[0024] By adopting the above technical solution, the lower bend pipe can be continuously split during the lowering process of the exchanger body, so that the lower bend pipe is not easy to affect the normal lowering of the exchanger body.

[0025] Optionally, the placement rack is detachably connected to an infrared sensor whose detection end is horizontal and facing the lower bend pipe, and the infrared sensor and the height adjustment motor are electrically connected to a controller.

[0026] By adopting the above technical solution, when the height of the exchanger body drops to the point where the bottom end of the lower bend pipe is directly opposite the infrared sensor, the height adjustment motor will stop running. At this time, the lower bend pipe can be removed to prevent the lower bend pipe from being too low and contacting the ground during the downward movement, thereby damaging the lower bend pipe or the exchanger body.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] When the exchanger body needs to be maintained, the frame is adjusted and moved down to make the exchanger body close to the ground for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a pipe connection diagram of the exchanger body of the present application arranged outside the washing, dyeing and drying machine; Figure 2 It is a structural schematic diagram of the exchanger body of the present application being installed in a corresponding washing, dyeing and drying machine; Figure 3 It is the main structure of the exchanger body, and a schematic diagram of the structure in which one end surface of the shell is partially cut away; Figure 4 It is a schematic diagram of the relevant structure of setting the exchanger body on the height adjustment frame; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 It is a structural schematic diagram of the mobile rack near one end of the placement rack; Figure 7 It is a partial control system block diagram of this application.

[0030] Explanation of the reference numerals: 1. exchanger body; 2. placement rack; 21. filter; 22. drain valve; 3. height adjustment rack; 31. vertical electric cylinder; 32. damper; 33. pipe box; 34. shell; 35. heat exchange tube; 36. shell-side tube; 37. baffle; 38. washing, dyeing and drying machine; 39. circulation pump; 4. rack rack; 41. rod gear; 42. moving rack; 43. bidirectional lead screw; 44. lead screw motor; 45. rod plate; 46. moving rack; 47. horizontal rotating rack; 48. horizontal rotating motor; 49. vertical rotating rack; 5. rack gear; 51. height adjustment motor; 52. worm gear; 53. worm; 54. lower bend pipe; 55. drain valve; 56. infrared sensor; 57. controller; 58. pressure rod; 59. inclined part. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] Embodiment 1: The present application discloses a heat exchanger for a washing, dyeing and drying machine, referring to Figure 1 and Figure 2 , including an exchanger body 1 that can be connected to a washing, dyeing and drying machine 38 to heat the dye liquid. A circulation pump 39 and a filter 21 are also connected between the exchanger body 1 and the washing, dyeing and drying machine 38 to continuously feed the dye liquid or cleaning water into the exchanger body 1 for heating. During this process, some sundries and impurities in the washing, dyeing and drying machine 38 are not easy to enter the exchanger body 1.

[0033] Reference Figure 3 The exchanger body 1 includes two pipe boxes 33 both connected to the washing, dyeing and drying machine 38. The two pipe boxes 33 are flange-connected with the same shell 34. Several heat exchange tubes 35 are detachably connected inside the shell 34. The length direction of the heat exchange tubes 35 is consistent with the length direction of the shell 34. The two ends of the heat exchange tubes 35 are connected to the two pipe boxes 33 one by one, so that the dyeing liquid can enter the heat exchange tubes 35 through the pipe boxes 33. The outer walls of both ends of the shell 34 are connected with shell-side tubes 36. One shell-side tube 36 is located at the highest point of the shell 34 and the other shell-side tube 36 is located at the lowest point of the shell 34. The high shell-side tube 36 is used for steam to enter the shell 34 and the low shell-side tube 36 is used for steam in the shell 34 to be sent out.

[0034] Reference Figure 3Two rows of baffles 37 are installed in the shell 34. The two rows of baffles 37 are arranged in a staggered manner. The projections of the two rows of baffles 37 on the end surface of the shell 34 overlap, so that the steam stays in the shell 34 for a sufficiently long time. The lowest point of the bottom of the shell 34 is connected to the drain valve 22. There is a gap between the two rows of baffles 37 and the shell 34 on the side away from each other. Two shell-side tubes 36 are located one by one at the side away from the two rows of baffles 37, so that the condensed water accumulated at the bottom of the shell 34 can be discharged smoothly from the drain valve 22.

[0035] The shell 34 of this embodiment is made of 304L stainless steel, the heat exchange tube 35 is made of 316 stainless steel, the shell 34 has a nominal diameter of 219 mm, a nominal pressure of 2.5 MPa, a heat exchange tube 35 has a diameter of 19 mm, a wall thickness of 2 mm, a length of 1500 mm, and 76 heat exchange tubes 35. The length of the heat exchange tube 35 extending out of the tube sheet in the shell 34 is 3 mm, and the thickness of the tube sheet in the shell 34 is 50 mm. According to the heat exchange area calculation formula of the fixed tube sheet heat exchanger in GB / T 28712.2-2023:

[0036] It can be seen that the heat exchange area of ​​the exchanger body 1 of the present application is about 6.3m 2 , meeting the requirements of heat exchange efficiency.

[0037] The implementation principle of the heat exchanger of the laundry, dyeing and drying machine in the first embodiment of the present application is: when maintaining the exchanger body 1, there is no need to disassemble the laundry, dyeing and drying machine 38 to facilitate the maintenance of the exchanger body 1.

[0038] Embodiment 2:

[0039] The second embodiment of the present application discloses a heat exchanger for a washing, dyeing and drying machine, referring to Figure 4 , which is different from the first embodiment, is that a placement rack 2 is installed on the ground by bolts. In other implementations of this embodiment, the placement rack 2 can also be installed and fixed by bolts between the outer wall of the cylinder of the washing, dyeing and drying machine 38 where the cloth is placed for flipping. The placement rack 2 is slidably connected to the height adjustment rack 3 along its own height direction. The height adjustment rack 3 is installed and fixed to the exchanger body 1 so that the height of the height adjustment rack 3 can be lowered when the exchanger body 1 needs to be maintained.

[0040] Reference Figure 4The height adjustment frame 3 includes a mobile frame 46 slidably connected to the placement frame 2, and the upper part of the mobile frame 46 is rotatably connected to a horizontal rotating frame 47, and the direction of the rotation axis of the horizontal rotating frame 47 is consistent with the moving direction of the mobile frame 46. The mobile frame 46 is detachably connected to a horizontal rotating motor 48 whose output shaft is coaxially detachably connected to the rotation point of the horizontal rotating frame 47. The upper part of the horizontal rotating frame 47 is rotatably connected to a vertical rotating frame 49, and the exchanger body 1 is installed directly above the vertical rotating frame 49, and the rotation axis of the vertical rotating frame 49 is perpendicular to the rotation axis of the horizontal rotating frame 47. The rotation point of the vertical rotating frame 49 is located at the center of its own length direction. A vertical rotating electric cylinder 31 is hinged at one end of the vertical rotating frame 49 in the length direction, and the cylinder body of the vertical rotating electric cylinder 31 is hinged to the horizontal rotating frame 47, and the rotation axis directions of both ends of the vertical rotating electric cylinder 31 are consistent with the rotation axis directions of the vertical rotating frame 49. A damper 32 is hinged at one end of the vertical rotating frame 49 in the length direction away from the vertical rotating electric cylinder 31, and the bottom end of the damper 32 is hinged to the horizontal rotating frame 47, so that after the exchanger main body 1 is installed corresponding to the vertical rotating frame 49, the horizontal rotating frame 47 and the vertical rotating frame 49 can be adjusted at a small angle to allow the pipeline between the exchanger main body 1 and the washing, dyeing and drying machine 38 to be smoothly connected and installed.

[0041] Reference Figure 4 Two rows of inclined portions 59 are formed on the upper surface of the vertical rotating frame 49, and the adjacent surfaces of the two rows of inclined portions 59 are inclined, and the exchanger body 1 is placed between the inclined surfaces of the two rows of inclined portions 59. The vertical rotating frame 49 is rotatably connected with a set of two pressure rods 58, and the pressure rods 58 are fixedly connected with the rod plate 45 that is opposite to the adjacent inclined portions 59. The surfaces of the pressure rods 58 and the inclined portions 59 facing the exchanger body 1 can be bonded with a high temperature resistant rubber layer, so that the exchanger body 1 mainly bears the pressure between the rod plate 45 and the inclined portions 59 to achieve position fixation, thereby reducing the shear force borne by the exchanger body 1.

[0042] Reference Figure 4 and Figure 5 , the rod gear 41 is coaxially fixedly connected at the rotation point of the pressure rod 58, and the rod gear 41 is meshed with a movable rack 42 that is slidably connected to the vertical rotating frame 49. The movable rack 42 can be composed of a spur rack and a slider that are detachably connected by bolts. The sliding direction of the movable rack 42 is consistent with the direction of the rotation axis of the vertical rotating frame 49. The movable racks 42 corresponding to the two pressure rods 58 in the same group are threadedly connected to the same bidirectional lead screw 43. The thread directions on both sides of the center point of the bidirectional lead screw 43 are opposite. The two movable racks 42 in the same group are located at equidistant positions on both sides of the center point of the bidirectional lead screw 43. The vertical rotating frame 49 is detachably connected to a lead screw motor 44 whose output shaft is coaxially detachably connected to the bidirectional lead screw 43.

[0043] Reference Figure 6 and Figure 7The rack 2 is detachably connected with a rack rack 4 along its own height direction, the mobile rack 46 is rotatably connected with a rack gear 5 meshed with the rack rack 4, the mobile rack 46 is rotatably connected with a worm gear 52 coaxially fixedly connected to the rack gear 5, the worm gear 52 meshes with a worm 53 rotatably connected to the mobile rack 46, and the mobile rack 46 is detachably connected with a height adjustment motor 51 whose output shaft is coaxially detachably connected to the worm 53. At the same time, the pipe box 33, the shell-side pipe 36 and the drain valve 22 are all flange-connected with a lower bend pipe 54, and the lower bend pipe 54 is divided into several sections along the height direction of the rack 2, and the adjacent two sections of the lower bend pipe 54 are connected by flanges. A drain valve 55 is flange-connected to the pipe body of the lower bend pipe 54, and the rack 2 is detachably connected with an infrared sensor 56, and the infrared sensor 56 and the height adjustment motor 51 are electrically connected with a controller 57.

[0044] The implementation principle of the heat exchanger of a washing, dyeing and drying machine in the second embodiment of the present application is as follows: when the exchanger body 1 needs to be maintained, the drain valve 55 is first opened to release the medium in the corresponding pipeline, and then the height adjustment motor 51 is operated to move the movable frame 46 downward. When the lowest part of the lower bend pipe 54 is opposite to the infrared sensor 56, the distance value detected by the infrared sensor 56 is less than the distance threshold in the controller 57, and the height adjustment motor 51 stops running until the lowest part of the lower bend pipe 54 is removed. Then the height adjustment motor 51 continues to run, and until the entire lower bend pipe 54 is removed and the encoder of the height adjustment motor 51 detects that the output shaft of the height adjustment motor 51 has rotated a predetermined number of times and reached a predetermined distance value, the height adjustment motor 51 stops running, and then the exchanger body 1 can be maintained.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat exchanger for a washing, dyeing and drying machine, characterized in that: The invention comprises an exchanger body (1) capable of heating dye liquor and located outside a washing, dyeing and drying machine (38). The exchanger body (1) comprises two pipe boxes (33) both connected to the washing, dyeing and drying machine (38). A shell (34) is detachably connected between the two pipe boxes (33). The shell (34) is detachably connected to a plurality of heat exchange tubes (35) connected to the pipe boxes (33) for the dye liquor to pass through. The shell (34) is connected to two shell-side tubes (36) for steam to enter or be sent out.

2. The heat exchanger for a washing, dyeing and drying machine according to claim 1, characterized in that: The two shell-side tubes (36) are located at two ends of the shell (34) in a one-to-one correspondence, and the axis of the shell (34) is located between the two shell-side tubes (36).

3. The heat exchanger for a washing, dyeing and drying machine according to claim 1, characterized in that: Two rows of baffles (37) are installed in the shell (34), the two rows of baffles (37) are arranged in a staggered manner, and projections of the two rows of baffles (37) on the end surface of the shell (34) have overlapping areas.

4. The heat exchanger for a washing, dyeing and drying machine according to claim 3, characterized in that: The bottom of the shell (34) is connected to a sewage valve (22), and the two rows of baffles (37) are spaced apart from the shell (34) on both sides.

5. The heat exchanger for the washing, dyeing and drying machine according to claim 4, characterized in that: The two shell-side tubes (36) are located at the highest point and the lowest point of the shell (34) in a one-to-one correspondence. The higher shell-side tube (36) is used for steam to enter, and the lower shell-side tube (36) is used for steam to exit. The shell-side tube (36) is located on one side where there is a gap between the baffle plate (37) and the inner wall of the shell (34).

6. The heat exchanger for a washing, dyeing and drying machine according to claim 1, characterized in that: A placement rack (2) is provided around the exchanger body (1); the placement rack (2) is slidably connected to a height-adjusting rack (3) whose height can be changed and to which the exchanger body (1) is detachably connected; the placement rack (2) is detachably connected to a rack rack (4); the height-adjusting rack (3) is rotatably connected to a rack gear (5) meshed with the rack rack (4); and the height-adjusting rack (3) is provided with a height-adjusting motor (51) for driving the rack gear (5) to rotate.

7. The heat exchanger for a washing, dyeing and drying machine according to claim 1, characterized in that: The rack gear (5) is coaxially fixedly connected with a worm wheel (52) rotatably connected to the height adjustment rack (3); the worm wheel (52) is meshed with a worm (53) rotatably connected to the height adjustment rack (3); the worm (53) is driven by the height adjustment motor (51) to rotate.

8. The heat exchanger for a washing, dyeing and drying machine according to claim 1, characterized in that: The shell-side inlet and outlet and the tube-side inlet and outlet of the exchanger body (1) are both connected to a lower bend pipe (54), the bottom end of the lower bend pipe (54) is close to the ground, and the outer wall of the circumference of the bottom end of the lower bend pipe (54) is connected to a drain valve (55).

9. The heat exchanger for the washing, dyeing and drying machine according to claim 8, characterized in that: The lower curved pipe (54) is divided into several sections in the vertical direction and is detachably connected.

10. The heat exchanger for the washing, dyeing and drying machine according to claim 9, characterized in that: The placement rack (2) is detachably connected to an infrared sensor (56) whose detection end is horizontal and facing the lower curved pipe (54); the infrared sensor (56) and the height adjustment motor (51) are electrically connected to a controller (57).

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