A dyeing vat heating device and method

Abstract

This application relates to a dyeing vat heating device and method, belonging to the technical field of dyeing and printing equipment. The dyeing vat heating device includes a heat exchange tube, a heat exchange cylinder sleeved outside the heat exchange tube, a tube sheet disposed at the end of the heat exchange cylinder, and a dye liquor outlet pipe for communicating with the dyeing vat. Multiple dye liquor outlet pipes are connected to the heat exchange cylinder, and each dye liquor outlet pipe is connected to the dye liquor outlet pipe. A partition plate is slidably disposed between the heat exchange cylinder and the heat exchange tube, and the partition plate is slidably sleeved outside the heat exchange tube. A baffle plate is disposed on the side of the partition plate away from the tube sheet to block the opening of the dye liquor outlet pipe. The baffle plate abuts against the inner wall of the heat exchange cylinder, and an opening is provided on the baffle plate for communicating with the dye liquor outlet pipe. An adjusting element is disposed on the tube sheet for adjusting the sliding of the partition plate. This application has the effect of facilitating the adjustment of the dye liquor heating temperature.

Description

Technical Field

[0001] This application relates to the field of dyeing and printing equipment technology, and in particular to a dyeing vat heating device and method. Background Technology

[0002] Printing and dyeing refers to the physical and chemical treatment of textiles to add patterns and designs, and change the color of the textiles. The dye vat is an essential piece of equipment in the printing and dyeing process. During operation, the dyeing solution in the vat is usually heated to achieve rapid immersion.

[0003] In related technologies, the dyeing vat heating device includes a heating section and a heat exchange section connected to each other. The heating section includes a natural gas burner connected to a flue gas pipe. A dyeing liquid pipe is sleeved on the outside of the flue gas pipe and connected to an inlet pipe. The heat exchange section includes a heat exchange tube, a heat exchange cylinder sleeved on the outside of the heat exchange tube, an outlet pipe and a tube sheet. The outlet pipe has a dyeing liquid outlet, and the tube sheet has a flue gas outlet. The heat exchange cylinder and the dyeing liquid pipe are connected by a bend, and the heat exchange tube and the flue gas pipe are connected by a bend. The circulating dye liquor in the dyeing vat enters the dye liquor pipe through the inlet pipe. The heat generated by the combustion of natural gas and combustion air by the natural gas burner is carried into the flue gas pipe by the flue gas. The dye liquor flows between the dye liquor pipe and the flue gas pipe, exchanging heat with the flue gas in the flue gas pipe during the flow, and the temperature of the dye liquor rises. The dye liquor and flue gas enter the heat exchange section from the heating section through the bend pipe. The flue gas travels in the heat exchange tube, and the dye liquor travels in the interlayer between the heat exchange tube and the heat exchange cylinder. Heat exchange continues during the flow. Finally, the dye liquor enters the dyeing vat from the dye liquor outlet.

[0004] In the aforementioned related technologies, the lengths of the flue gas pipe, dye liquor pipe, heat exchange pipe, and heat exchange cylinder are fixed, which means that the heat exchange distance and time are fixed, making it inconvenient to adjust the heating temperature of the dye liquor as needed. Summary of the Invention

[0005] To facilitate the adjustment of the heating temperature of the dye bath, this application provides a dyeing vat heating device and method.

[0006] Firstly, the dyeing vat heating device provided in this application adopts the following technical solution: A dyeing vat heating device includes a heat exchange tube, a heat exchange cylinder sleeved outside the heat exchange tube, a tube sheet disposed at the end of the heat exchange cylinder, and a dye liquor outlet pipe for communicating with the dyeing vat. The heat exchange cylinder is connected to multiple dye liquor outlet pipes, which are spaced apart along the length of the heat exchange cylinder. Each dye liquor outlet pipe is connected to the dye liquor outlet pipe. A partition plate is slidably disposed between the heat exchange cylinder and the heat exchange tube. The partition plate is slidably sleeved outside the heat exchange tube and is used to block the flow of dye liquor toward the tube sheet. The sliding direction of the partition plate is parallel to the length direction of the heat exchange cylinder. A baffle plate is disposed on the side of the partition plate away from the tube sheet to block the opening of the dye liquor outlet pipe. The baffle plate abuts against the inner wall of the heat exchange cylinder. An opening is provided on the baffle plate for communicating with the dye liquor outlet pipe. The distance from the partition plate to the opening is less than the distance between adjacent dye liquor outlet pipes. An adjusting member is disposed on the tube sheet for adjusting the sliding of the partition plate.

[0007] By adopting the above technical solution, the partition plate is moved by the adjusting component, and the opening on the partition plate is aligned with the dye liquor outlet pipe at the desired position. At this time, the partition plate blocks the flow of dye liquor toward the tube plate, and the partition plate blocks the dye liquor outlet pipe on the side of the opening away from the tube plate. Thus, the dye liquor can only flow out from the dye liquor outlet pipe aligned with the opening, thereby adjusting the heat exchange path and heat exchange time of the dye liquor, which helps to adjust the heating temperature of the dye liquor as needed.

[0008] Preferably, the adjusting component includes a first screw threaded through the tube sheet, the rotation axis of the first screw being parallel to the sliding direction of the partition plate, and the first screw and the side of the partition plate away from the baffle plate being rotatably connected.

[0009] By adopting the above technical solution, the first screw is rotated and moves towards or away from the heat exchange cylinder. The first screw drives the partition plate and the baffle plate to move synchronously, thereby adjusting the position of the partition plate. This helps to adjust the heat exchange path of the dye liquor as needed, extend or shorten the heat exchange time of the dye liquor, and thus adjust the heating temperature of the dye liquor.

[0010] Preferably, a heat insulation plate is slidably disposed on the side of the partition plate near the heat exchange tube. The heat insulation plate is slidably sleeved on the outside of the heat exchange tube, and the heat insulation plate abuts against the outer wall of the heat exchange tube. The sliding direction of the heat insulation plate is parallel to the sliding direction of the partition plate. A driving mechanism for driving the heat insulation plate to slide is provided on the partition plate.

[0011] By adopting the above technical solution, the heat insulation plate is driven by the driving mechanism to slide towards or away from the tube sheet, which helps to adjust the contact area between the dye liquor and the outer wall of the heat exchange tube, thereby facilitating further adjustment of the heating temperature of the dye liquor and expanding the adjustment range to a certain extent.

[0012] Preferably, the driving mechanism includes a second screw rotatably disposed on the side of the partition plate away from the shield plate and a transmission assembly disposed on the partition plate. The rotation axis of the second screw is parallel to the sliding direction of the heat insulation plate. The heat insulation plate is threadedly connected to the second screw, and the transmission assembly is used to drive the second screw to rotate.

[0013] By adopting the above technical solution, the second screw is driven to rotate by the transmission component, and the second screw drives the heat insulation plate to slide in the direction of approaching or moving away from the tube plate, which helps to adjust the contact area between the dye liquor and the outer wall of the heat exchange tube, thereby further adjusting the heating temperature of the dye liquor and expanding the adjustment range.

[0014] Preferably, the transmission assembly includes a first gear sleeved on a first screw, a second gear sleeved on a second screw, a mounting block slidably disposed on a partition plate, a pull rope disposed on the mounting block, and a pulling member disposed on the partition plate. The mounting block is located on the side of the partition plate away from the shield plate, and the mounting block slides toward or away from the first screw. The second screw is rotatably disposed on the mounting block. The first gear meshes with the second gear. The pull rope moves from the end of the first screw near the partition plate through the end of the first screw away from the partition plate. A first plate body is disposed on the heat insulation plate, and a second plate body is slidably disposed on the first plate body. The sliding direction of the second plate body is parallel to the sliding direction of the mounting block. The second plate body is threadedly connected to the second screw. The pulling member is used to pull the mounting block to slide away from the first screw.

[0015] By adopting the above technical solution, pulling the pull rope causes the mounting block to slide towards the first screw, making the second gear mesh with the first gear. At this time, rotating the first screw causes the first gear to drive the second gear to rotate, thus realizing the rotation of the second screw. The second screw, through the first and second plates, facilitates the adjustment of the position of the heat insulation plate, which helps to adjust the contact area between the dye liquor and the outer wall of the heat exchange tube. Releasing the pull rope causes the pulling element to pull the mounting block away from the first screw, disengaging the first gear and the second gear, thereby facilitating the relative fixation of the heat insulation plate and the partition plate.

[0016] Preferably, the pulling member includes a tension spring for pulling the mounting block to slide away from the first screw, one end of the tension spring being disposed on the partition plate and the other end being disposed on the mounting block.

[0017] By adopting the above technical solution, the mounting block is pulled by the tension spring to slide away from the first screw, so that the first gear and the second gear are disengaged, thereby achieving relative fixation of the heat insulation plate and the partition plate.

[0018] Preferably, a hanging ring is provided at the end of the pull rope away from the mounting block, and a hook is provided on the side of the first screw away from the partition plate. When the hanging ring and the hook are engaged, the first gear and the second gear mesh.

[0019] By adopting the above technical solution, the hook and the hanging ring are connected and engaged, so that the first gear is engaged with the second gear, which facilitates the adjustment of the position of the partition plate. The worker does not need to pull the rope while turning the first screw, which provides convenience for the worker's operation.

[0020] Preferably, a filter screen is provided on the side of the shield away from the partition plate, and the filter screen is slidably sleeved on the outside of the heat exchange tube. The filter screen is used to filter impurity particles in the dye liquor.

[0021] By adopting the above technical solution, the filter screen helps to filter impurity particles in the circulating dye liquor, thereby improving the dyeing effect of the circulating dye liquor.

[0022] Preferably, a toothed ring is rotatably provided on the side of the filter screen away from the baffle plate, the rotation axis of the toothed ring is parallel to the sliding direction of the partition plate, the toothed ring and the heat exchange tube are coaxially arranged, a cleaning brush is provided on the toothed ring, the cleaning brush abuts against the filter screen, an impeller is rotatably arranged on the filter screen, the rotation axis of the impeller is parallel to the sliding direction of the partition plate, a transmission gear is coaxially connected to the impeller, and the transmission gear meshes with the toothed ring.

[0023] By adopting the above technical solution, when the dye liquor passes through the heat exchange cylinder and heat exchange tube jacket, it drives the impeller to rotate. The impeller drives the transmission gear to rotate, which in turn drives the gear ring to rotate. This allows the gear ring to drive the cleaning brush to slide circumferentially along the filter screen, cleaning the impurity particles on the filter screen and making it less likely for the impurity particles to clog the filter screen.

[0024] Secondly, the dyeing vat heating method provided in this application adopts the following technical solution: A method for heating a dyeing vat, using the aforementioned dyeing vat heating device, further includes the following steps: Step 1: Adjust the partition plate and the baffle plate to the desired position using the adjusting components, so that the opening on the baffle plate is aligned with the dye liquor outlet pipe at the desired position. The partition plate blocks the flow of dye liquor toward the tube sheet, and the baffle plate closes the dye liquor outlet pipe on the side away from the tube sheet, thereby achieving the adjustment of the dye liquor heat exchange path. Step 2: The heat generated by the combustion of natural gas and combustion air by the natural gas burner is carried into the flue gas pipe through the flue gas. Step 3: The dye liquor circulating in the dyeing vat enters the dye liquor pipe through the inlet pipe. The dye liquor flows between the dye liquor pipe and the flue gas pipe. During the flow, it exchanges heat with the flue gas, which raises the temperature of the dye liquor and lowers the temperature of the flue gas. Step 4: The flue gas enters the heat exchange tube through the bend, and the dye liquor circulating in the dyeing vat enters the heat exchange tube and the heat exchange cylinder jacket through the bend, where heat exchange continues during the flow process. Step 5: After heat exchange, the flue gas is discharged from the heat exchange tube and then enters the external air heat exchanger to heat the combustion air, further utilizing the waste heat of the flue gas. The flue gas can be centrally discharged to the outside through pipelines. Step 6: After being heated, the dye liquor flows into the dye liquor outlet pipe through the opening and then into the dyeing vat, thereby heating the materials in the dyeing vat.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The partition plate is moved by the adjusting component, and the baffle plate is aligned with the dye liquor outlet pipe at the desired position. At this time, the partition plate blocks the flow of dye liquor toward the tube plate, and the baffle plate blocks the dye liquor outlet pipe on the side of the opening away from the tube plate. Thus, the dye liquor can only flow out from the dye liquor outlet pipe aligned with the opening, thereby adjusting the heat exchange path and heat exchange time of the dye liquor, which helps to adjust the heating temperature of the dye liquor as needed. Pulling the pull rope causes the mounting block to slide closer to the first screw, making the second gear mesh with the first gear. At this time, rotating the first screw causes the first gear to drive the second gear to rotate, thus rotating the second screw. The second screw, through the first and second plates, facilitates the adjustment of the position of the heat insulation plate, which helps to adjust the contact area between the dye liquor and the outer wall of the heat exchange tube, thereby further adjusting the heating temperature of the dye liquor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a partial structural cross-sectional view of an embodiment of this application.

[0028] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0029] Figure 4 yes Figure 2 Enlarged view of section B.

[0030] Figure 5 yes Figure 2 Enlarged view of section C.

[0031] Explanation of reference numerals in the attached drawings: 1. Heat exchange tube; 2. Heat exchange cylinder; 3. Tube sheet; 4. Dye liquor outlet pipe; 5. Dye liquor outlet pipe; 6. Divider plate; 7. Baffle plate; 8. Opening; 9. First screw; 10. Heat insulation plate; 11. Drive mechanism; 111. Second screw; 112. Transmission assembly; 1121. First gear; 1122. Second gear; 1123. Mounting block; 1124. Pull rope; 1125. Pulling component; 11251. Tension spring; 12. First plate; 13. Second plate; 14. Hanging ring; 15. Hook; 16. Filter screen; 17. Gear ring; 18. Cleaning brush; 19. Impeller; 20. Transmission gear; 21. Rubber pad; 22. Valve; 23. Temperature display; 24. Guide block; 25. Guide groove; 26. Support rod. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a dye vat heating device. (Refer to...) Figure 1 and Figure 2 The dyeing vat heating device includes a heat exchange tube 1, a heat exchange cylinder 2 sleeved outside the heat exchange tube 1, a tube sheet 3 located at the end of the heat exchange cylinder 2 away from the dye liquor pipe, and a dye liquor outlet pipe 4 for communicating with the dyeing vat. The heat exchange tube 1 is connected to the flue gas pipe via a bend, the heat exchange cylinder 2 is connected to the dye liquor pipe via a bend, and the tube sheet 3 is used to seal the end of the heat exchange cylinder 2 away from the dye liquor pipe. The tube sheet 3 and the heat exchange cylinder 2 are detachably connected by bolts. A rubber gasket 21 is adhered to the side of the tube sheet 3 near the heat exchange tube 1, and the rubber gasket 21 abuts against the outer wall of the heat exchange tube 1 to improve sealing. Multiple dye liquor outlet pipes are connected to the heat exchange cylinder 2. In this embodiment, three dye liquor outlet pipes 5 are provided. In other embodiments, the number of dye liquor outlet pipes 5 can be set as needed. The three dye liquor outlet pipes 5 are arranged at intervals along the length of the heat exchange cylinder 2. The end of each dye liquor outlet pipe 5 away from the heat exchange cylinder 2 is connected to the dye liquor outflow pipe 4. A valve 22 is fixedly installed at the end of each dye liquor outlet pipe 5 near the dye liquor outflow pipe 4. A temperature measuring instrument (not shown in the figure) for measuring the temperature of the dye liquor is provided in the dye liquor outflow pipe 4. A temperature display 23 connected to the temperature measuring instrument is provided on the dye liquor outflow pipe 4.

[0034] Reference Figure 2 and Figure 3A partition plate 6 is slidably disposed between the heat exchange cylinder 2 and the heat exchange tube 1. The partition plate 6 is slidably sleeved outside the heat exchange tube 1. The sliding direction of the partition plate 6 is parallel to the length direction of the heat exchange cylinder 2. One side of the partition plate 6 abuts against the inner wall of the heat exchange cylinder 2, and the other side abuts against the outer wall of the heat exchange tube 1. The partition plate 6 is used to block the flow of dye liquor toward the tube sheet 3. A baffle plate 7 is fixedly connected to the side of the partition plate 6 near the inner wall of the heat exchange cylinder 2 to block the opening of the dye liquor outlet pipe 5. The baffle plate 7 abuts against the inner wall of the heat exchange cylinder 2. The baffle plate 7 is located on the side of the partition plate 6 away from the tube sheet 3. An opening 8 is opened on the baffle plate 7 to communicate with the dye liquor outlet pipe 5. The distance from the partition plate 6 to the opening 8 is less than the distance between adjacent dye liquor outlet pipes 5. The length of the baffle plate 7 is greater than the distance between the two ends of the dye liquor outlet pipes 5. An adjusting component is provided on the tube sheet 3 to adjust the sliding of the partition plate 6.

[0035] Reference Figure 2 and Figure 3 To facilitate the adjustment of the sliding of the partition plate 6, the adjusting component includes a first screw 9 threaded through the tube plate 3. The rotation axis of the first screw 9 is parallel to the sliding direction of the partition plate 6. The first screw 9 and the side of the partition plate 6 away from the shield plate 7 are rotatably connected. Red marking lines are painted on the first screw 9 at intervals. The marking lines correspond one-to-one with the dye liquor outlet pipe 5. When the marking lines on the first screw 9 move to the tube plate 3, the opening 8 is aligned with the corresponding dye liquor outlet pipe 5, so as to adjust the position of the partition plate 6 and align the opening 8 on the shield plate 7 with the dye liquor outlet pipe 5 at the desired position.

[0036] When it is necessary to lower the heating temperature of the dye liquor, the first screw 9 is rotated, and the first screw 9 slides towards the heat exchange cylinder 2. The first screw 9 drives the partition plate 6 and the baffle plate 7 to slide synchronously. As needed, the mark line on the first screw 9 is moved to the tube sheet 3. At this time, the opening 8 is connected to the dye liquor outlet pipe 5 at the corresponding required position. Then, the valve 22 on the dye liquor outlet pipe 5 that is not connected to the opening 8 is closed to further prevent the dye liquor from flowing back. The partition plate 6 blocks the dye liquor from flowing to one side of the tube sheet 3, and the baffle plate 7 closes the dye liquor outlet pipe 5 on the side of the opening 8 away from the tube sheet 3. The natural gas burner... The heat generated by the combustion of natural gas and combustion air is carried into the flue gas pipe by the flue gas. The dye liquor circulating in the dyeing vat enters the dye liquor pipe through the inlet pipe. The dye liquor flows between the dye liquor pipe and the flue gas pipe, exchanging heat with the flue gas during the flow. Then the flue gas enters the heat exchange pipe 1 through the bend pipe. The dye liquor circulating in the dyeing vat enters the interlayer between the heat exchange pipe 1 and the heat exchange cylinder 2 through the bend pipe, and continues to exchange heat during the flow. The heated dye liquor can only flow through the corresponding dye liquor outlet pipe 5 to the dye liquor outlet pipe 4, and then enter the dyeing vat. Because the heat exchange path of the dye liquor is shortened, the heat exchange time of the dye liquor is shortened.

[0037] When it is necessary to increase the heating temperature of the dye liquor, the first screw 9 is rotated and slides away from the heat exchange cylinder 2. The first screw 9 drives the partition plate 6 and the baffle plate 7 to slide synchronously. As needed, the mark line on the first screw 9 at the appropriate position is moved to the tube plate 3. At this time, the opening 8 is connected to the dye liquor outlet pipe 5 at the corresponding required position, thereby extending the heat exchange path of the dye liquor and increasing the heat exchange time of the dye liquor. At the same time, by observing the temperature display 23 on the dye liquor outlet pipe 4, it is helpful to adjust the heating temperature of the dye liquor as needed.

[0038] Reference Figure 2 and Figure 3 A heat insulation plate 10 is slidably disposed on the side of the partition plate 6 near the heat exchange tube 1. The heat insulation plate 10 is slidably sleeved on the outer wall of the heat exchange tube 1, and the heat insulation plate 10 abuts against the outer wall of the heat exchange tube 1. The side of the partition plate 6 near the heat exchange tube 1 abuts against the heat insulation plate 10, so that the partition plate 6 abuts against the outer wall of the heat exchange tube 1 through the heat insulation plate 10. The sliding direction of the heat insulation plate 10 is parallel to the sliding direction of the partition plate 6. A driving mechanism 11 for driving the heat insulation plate 10 to slide is provided on the partition plate 6.

[0039] Reference Figure 2 and Figure 3To facilitate the sliding of the heat insulation plate 10, the driving mechanism 11 includes a second screw 111 rotatably disposed on the side of the partition plate 6 away from the shield plate 7 and a transmission assembly 112 disposed on the partition plate 6. The rotation axis of the second screw 111 is parallel to the sliding direction of the heat insulation plate 10. A second plate body 13 is disposed on the side of the heat insulation plate 10 near the tube sheet 3. The second plate body 13 is threadedly connected to the second screw 111. The transmission assembly 112 is used to drive the second screw 111 to rotate. The transmission assembly 112 includes a first gear 1121 fixedly sleeved on the first screw 9 and a second gear 1121 fixedly sleeved on the second screw 111. The assembly comprises a gear 1122, a mounting block 1123 slidably mounted on the partition plate 6, a pull rope 1124 mounted on the mounting block 1123, and a pull member 1125 mounted on the partition plate 6. The mounting block 1123 is located on the side of the partition plate 6 closest to the tube sheet 3. The mounting block 1123 slides towards or away from the first screw 9. The sliding direction of the mounting block 1123 is perpendicular to the rotation axis of the first screw 9 and perpendicular to the sliding direction of the heat insulation plate 10. A guide block 24 is fixed on the side of the mounting block 1123 closest to the partition plate 6. The guide block 24 has a T-shaped cross-section. A guide groove 25 is provided on the side of the partition plate 6 near the tube plate 3, which slides with the guide block 24 to improve the sliding effect of the mounting block 1123. The second screw 111 is rotatably mounted on the mounting block 1123. The heat insulation plate 10 is fixed with a first plate 12 on the side near the tube plate 3. The second plate 13 is slidably sleeved on the first plate 12. The sliding direction of the second plate 13 is parallel to the sliding direction of the mounting block 1123. The first gear 1121 is used to mesh with the second gear 1122. The pull rope 1124 moves from the end of the first screw 9 near the partition plate 6, passes through the first screw 9, and moves away from the partition plate 6. One end of plate 6 protrudes, and a through hole (not shown in the figure) is provided on the first screw 9 for the pull rope 1124 to pass through. The pulling member 1125 is used to pull the mounting block 1123 to slide away from the first screw 9. The pulling member 1125 includes a tension spring 11251 for pulling the mounting block 1123 to slide away from the first screw 9. The extension direction of the tension spring 11251 is parallel to the sliding direction of the mounting block 1123. One end of the tension spring 11251 is fixedly connected to the side wall of the guide groove 25 away from the first screw 9, and the other end is fixedly connected to the guide block 24 away from the first screw 9.

[0040] Reference Figure 3 and Figure 4 The end of the pull rope 1124 away from the mounting block 1123 is fixedly connected to a hanging ring 14, and the first screw 9 away from the partition plate 6 is fixedly connected to a hook 15. When the hook 15 and the hanging ring 14 are engaged, the first gear 1121 and the second gear 1122 mesh.

[0041] When it is necessary to further reduce the heating temperature of the dye liquor, pull the rope 1124 to move it away from the first screw 9, causing the mounting block 1123 to drive the second screw 111 to move closer to the first screw 9. The hanging ring 14 on the rope 1124 is then hooked onto the hook 15 on the first screw 9, keeping the first gear 1121 and the second gear 1122 engaged. The mounting block 1123 and the partition plate 6 are relatively fixed. When the first gear 1121 and the second gear 1122 cannot engage, the position of the first gear 1121 can be adjusted by rotating the first screw 9. To solve the problem, the first screw 9 is rotated, causing the partition plate 6 to slide towards the heat exchange cylinder 2, shortening the heat exchange path of the dye liquor. At the same time, the first gear 1121 drives the second gear 1122 to rotate, causing the second gear 1122 to drive the second screw 111 to rotate. The second screw 111 drives the second plate 13 to slide the heat insulation plate 10 away from the tube sheet 3, so that the heat insulation plate 10 blocks the outer wall of the heat exchange tube 1 on the side of the partition plate 6 away from the tube sheet 3, further reducing the heat exchange area and path, thereby reducing the heating temperature of the dye liquor.

[0042] When it is necessary to raise the heating temperature of the dye liquor, pull the rope 1124 to engage the hook 15 and the hanging ring 14, rotate the first screw 9, and the first screw 9 drives the partition plate 6 to move towards the tube plate 3. At this time, the first gear 1121 drives the second gear 1122 to rotate, the second gear 1122 drives the second screw 111 to rotate, and the second screw 111 drives the heat insulation plate 10 to slide towards the tube plate 3, thereby expanding the heat exchange area and path of the dye liquor, realizing the increase of the heating temperature of the dye liquor, and expanding the adjustable range of the dye liquor temperature to a certain extent.

[0043] Reference Figure 2 and Figure 5 A filter screen 16 is fixedly connected to the side of the baffle plate 7 away from the partition plate 6. The filter screen 16 is used to filter impurity particles in the dye liquor. The filter screen 16 is slidably sleeved on the outer wall of the heat exchange tube 1, and the filter screen 16 abuts against the outer wall of the heat exchange tube 1. A toothed ring 17 is rotatably provided on the side of the filter screen 16 away from the baffle plate 7. The rotation axis of the toothed ring 17 is parallel to the sliding direction of the partition plate 6. The toothed ring 17 and the heat exchange cylinder 2 are coaxially arranged. A cleaning brush 18 is fixedly connected to the toothed ring 17. The cleaning brush 18 and the filter screen 16 abut against each other. A support rod 26 is fixed on the side of the filter screen 16 away from the baffle plate 7. The longitudinal section of the support rod 26 is L-shaped. An impeller 19 is rotatably mounted on the support rod 26. The impeller 19 is located on the side of the gear ring 17 away from the filter screen 16. The rotation axis of the impeller 19 is parallel to the sliding direction of the partition plate 6. A transmission gear 20 is coaxially fixed on the impeller 19. The transmission gear 20 is located inside the gear ring 17 and meshes with the gear ring 17.

[0044] When the dye liquor in the heat exchange cylinder 2 and heat exchange tube 1 passes through the filter screen 16, the filter screen 16 filters out impurity particles in the dye liquor, improving the quality of the circulating dye liquor. Simultaneously, when the dye liquor passes through the impeller 19, it drives the impeller 19 to rotate, causing the transmission gear 20 to drive the gear ring 17 to rotate. The gear ring 17 drives the cleaning brush 18 to slide circumferentially along the filter screen 16, preventing impurity particles from adhering to and clogging the filter screen 16. After heat exchange is complete, when it is necessary to clean the filter screen 16, the tube sheet 3 is removed from the heat exchange cylinder 2, and the filter screen 16 can be removed from the heat exchange cylinder 2 by pulling the partition plate 6, making it easy and convenient to clean the impurities on the filter screen 16.

[0045] The implementation principle of this application embodiment is as follows: When it is necessary to reduce the heating temperature of the dye liquor, the first screw 9 is rotated and slides towards the heat exchange cylinder 2, thereby driving the partition plate 6 and the baffle plate 7 to slide. As needed, the marking line at the appropriate position on the first screw 9 is moved to the tube plate 3. At this time, the opening 8 is connected to the corresponding dye liquor outlet pipe 5. The heat generated by the natural gas burner after mixing and burning natural gas and combustion air is carried into the flue gas pipe through the flue gas. The dye liquor circulating in the dyeing tank enters the dye liquor pipe through the inlet pipe. The dye liquor flows between the dye liquor pipe and the flue gas pipe and exchanges heat with the flue gas. Then the flue gas enters the heat exchange tube 1 through the bend pipe. The dye liquor circulating in the dyeing tank enters the interlayer between the heat exchange tube 1 and the heat exchange cylinder 2 through the bend pipe. During the flow, heat exchange continues. The dye liquor after heating can only flow through the corresponding dye liquor outlet pipe 5 to the dye liquor outlet pipe 4 and then enter the dyeing tank. Since the heat exchange path and time of the dye liquor are shortened, the heat exchange time of the dye liquor is reduced.

[0046] When it is necessary to further reduce the heating temperature of the dye liquor, pull the rope 1124 to move away from the first screw 9, causing the mounting block 1123 to drive the second screw 111 to move closer to the first screw 9. The hanging ring 14 on the rope 1124 is hooked onto the upper hook 15 on the first screw 9, so that the first gear 1121 and the second gear 1122 mesh, and the mounting block 1123 and the partition plate 6 are relatively fixed. At this time, rotate the first screw 9, and the first screw 9 drives the partition plate 6 to slide away from the tube plate 3, shortening the heat exchange path of the dye liquor. At the same time, the first gear 1121 drives the second gear 1122 to rotate, so that the second gear 1122 drives the second screw 111 to rotate. The second screw 111 drives the heat insulation plate 10 to slide away from the tube plate 3, so that the heat insulation plate 10 blocks part of the outer wall of the heat exchange tube 1 on the side of the partition plate 6 away from the tube plate 3, further reducing the heat exchange area, thereby achieving a further reduction in the heating temperature of the dye liquor.

[0047] When it is necessary to increase the heating temperature of the dye liquor, remove the hanging ring 14 on the pull rope 1124 from the hook 15. At this time, the tension spring 11251 pulls the mounting block 1123 to drive the second screw 111 away from the first screw 9, so that the first gear 1121 and the second gear 1122 are disengaged, and the heat insulation plate 10 and the partition plate 6 are kept relatively fixed. The heat insulation plate 10 blocks part of the outer wall of the heat exchange tube 1. At this time, the first screw 9 can be rotated so that the first screw 9 drives the partition plate 6 to slide towards the tube plate 3 until the opening 8 and the dye liquor outlet pipe 5 at the required position are aligned. This extends the heat exchange path to a certain extent and increases the heating temperature of the dye liquor.

[0048] When it is necessary to further increase the heating temperature of the dye liquor, pull the rope 1124 to engage the hook 15 and the hanging ring 14, rotate the first screw 9, and the first screw 9 drives the partition plate 6 to move towards the tube sheet 3, extending the heat exchange path; at this time, the first gear 1121 drives the second gear 1122 to rotate, the second gear 1122 drives the second screw 111 to rotate, and the second screw 111 drives the heat insulation plate 10 to slide towards the tube sheet 3, expanding the heat exchange area of ​​the dye liquor and achieving a further increase in the heating temperature of the dye liquor.

[0049] This application discloses a method for heating a dyeing vat. The method, using the aforementioned dyeing vat heating device, further includes the following steps: Step 1: Rotate the first screw 9 to move the partition plate 6 and the baffle plate 7 to the desired position according to the marking line on the first screw 9, so that the opening 8 on the baffle plate 7 is aligned with the dye liquor outlet pipe 5 at the desired position. The partition plate 6 blocks the dye liquor from flowing towards the tube sheet 3, and the baffle plate 7 closes the dye liquor outlet pipe 5 on the side of the opening 8 away from the tube sheet 3, thereby adjusting the heat exchange path of the dye liquor. Close the valve 22 on the dye liquor outlet pipe 5 that is not connected to the opening 8. Step 2: The heat generated by the combustion of natural gas and combustion air by the natural gas burner is carried into the flue gas pipe through the flue gas. Step 3: The dye liquor circulating in the dyeing vat enters the dye liquor pipe through the inlet pipe. The dye liquor flows between the dye liquor pipe and the flue gas pipe. During the flow, it exchanges heat with the flue gas, which raises the temperature of the dye liquor and lowers the temperature of the flue gas. Step 4: The flue gas enters the heat exchange tube 1 through the bend, and the dye liquor circulating in the dyeing vat enters the jacket between the heat exchange tube 1 and the heat exchange cylinder 2 through the bend, and continues to exchange heat during the flow process. Step 5: After heat exchange, the low-temperature flue gas is discharged from heat exchange tube 1 and then enters the external air heat exchanger to heat the combustion air, further utilizing the waste heat of the flue gas. The low-temperature flue gas can be centrally discharged to the outside through pipelines. Step 6: After being heated, the dye liquor flows into the dye liquor outlet pipe 4 through the opening 8 from the dye liquor outlet pipe 5 aligned with the opening 8, and then enters the dyeing vat to achieve the purpose of heating the materials in the dyeing vat.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dyeing vat heating device, comprising a heat exchange tube (1), a heat exchange cylinder (2) sleeved outside the heat exchange tube (1), a tube sheet (3) disposed at the end of the heat exchange cylinder (2), and a dye liquor outlet pipe (4) for communicating with the dyeing vat, characterized in that: Multiple dye liquor outlet pipes (5) are connected to the heat exchange cylinder (2). The multiple dye liquor outlet pipes (5) are arranged at intervals along the length of the heat exchange cylinder (2). Each dye liquor outlet pipe (5) is connected to a dye liquor outflow pipe (4). A partition plate (6) is slidably arranged between the heat exchange cylinder (2) and the heat exchange tube (1). The partition plate (6) is slidably sleeved on the outside of the heat exchange tube (1). The partition plate (6) is used to block the flow of dye liquor toward the tube plate (3). The sliding direction of the partition plate (6) is parallel to the length of the heat exchange cylinder (2). A shielding plate (7) is provided on the side of the partition plate (6) away from the tube plate (3) to block the opening of the dye liquor outlet pipe (5). The shielding plate (7) and the heat exchange cylinder (2) The inner wall of the partition plate (6) is in contact with the partition plate (7), and an opening (8) is provided on the partition plate (7). The opening (8) is used to communicate with the dye liquor outlet pipe (5). The distance from the partition plate (6) to the opening (8) is less than the distance between adjacent dye liquor outlet pipes (5). The tube plate (3) is provided with an adjusting member for adjusting the sliding of the partition plate (6). The adjusting member includes a first screw (9) threaded through the tube plate (3). The rotation axis of the first screw (9) is parallel to the sliding direction of the partition plate (6). The first screw (9) and the partition plate (6) are rotatably connected on the side away from the partition plate (7). A heat insulation plate (10) is slidably provided on the side of the partition plate (6) close to the heat exchange tube (1). The heat insulation plate (10) is slidably sleeved. The heat insulation plate (10) is located outside the heat exchange tube (1) and abuts against the outer wall of the heat exchange tube (1). The sliding direction of the heat insulation plate (10) is parallel to the sliding direction of the partition plate (6). The partition plate (6) is provided with a driving mechanism (11) for driving the heat insulation plate (10) to slide. The driving mechanism (11) includes a second screw (111) rotatably disposed on the side of the partition plate (6) away from the shield plate (7) and a transmission assembly (112) disposed on the partition plate (6). The rotation axis of the second screw (111) is parallel to the sliding direction of the heat insulation plate (10). The heat insulation plate (10) is threadedly connected to the second screw (111). The transmission assembly (112) is used to drive the second screw (111) to rotate. The transmission assembly (112) includes a first gear (1121) sleeved on a first screw (9), a second gear (1122) sleeved on a second screw (111), a mounting block (1123) slidably disposed on a partition plate (6), a pull rope (1124) disposed on the mounting block (1123), and a pull member (1125) disposed on the partition plate (6). The mounting block (1123) is located on the side of the partition plate (6) away from the shield plate (7). The mounting block (1123) slides toward or away from the first screw (9). The second screw (111) is rotatably disposed on the mounting block (1123). The first gear (1121) is used to mesh with the second gear (1122).The pull rope (1124) moves from one end of the first screw (9) near the partition plate (6) through the other end of the first screw (9) away from the partition plate (6). A first plate body (12) is provided on the heat insulation plate (10), and a second plate body (13) is slidably disposed on the first plate body (12). The sliding direction of the second plate body (13) is parallel to the sliding direction of the mounting block (1123). The second plate body (13) is threadedly connected to the second screw (111). The pulling member (1125) is used to pull the mounting block (1123) to slide away from the first screw (9).

2. A dye vat heating apparatus according to claim 1, characterised in that: The pulling member (1125) includes a tension spring (11251) for pulling the mounting block (1123) to slide away from the first screw (9), one end of the tension spring (11251) is disposed on the partition plate (6) and the other end is disposed on the mounting block (1123).

3. A dye vat heating device according to claim 1, wherein: The end of the pull rope (1124) away from the mounting block (1123) is provided with a hanging ring (14), and the first screw (9) is provided with a hook (15) on the side away from the partition plate (6). When the hanging ring (14) and the hook (15) are engaged, the first gear (1121) and the second gear (1122) mesh.

4. A dye vat heating device according to claim 1, wherein: A filter screen (16) is provided on the side of the shielding plate (7) away from the partition plate (6). The filter screen (16) is slidably sleeved on the outside of the heat exchange tube (1). The filter screen (16) is used to filter impurity particles in the dyeing solution.

5. A beck heating device according to claim 4, characterised in that: A gear ring (17) is rotatably provided on the side of the filter screen (16) away from the baffle plate (7). The rotation axis of the gear ring (17) is parallel to the sliding direction of the partition plate (6). The gear ring (17) and the heat exchange tube (1) are coaxially arranged. A cleaning brush (18) is provided on the gear ring (17). The cleaning brush (18) abuts against the filter screen (16). An impeller (19) is rotatably provided on the filter screen (16). The rotation axis of the impeller (19) is parallel to the sliding direction of the partition plate (6). A transmission gear (20) is coaxially connected to the impeller (19). The transmission gear (20) meshes with the gear ring (17).

6. A dyeing bath heating method using the dyeing bath heating device according to any one of claims 1 to 5, characterized by, It also includes the following steps: Step 1: Adjust the partition plate (6) and the baffle plate (7) to the desired position by adjusting the adjustment components, so that the opening (8) on the baffle plate (7) is aligned with the dye liquor outlet pipe (5) at the desired position. The partition plate (6) blocks the dye liquor from flowing towards the tube sheet (3), and the baffle plate (7) closes the dye liquor outlet pipe (5) on the side away from the tube sheet (3) of the opening (8), thereby adjusting the dye liquor heat exchange path. Step 2: The heat generated by the combustion of natural gas and combustion air by the natural gas burner is carried into the flue gas pipe through the flue gas. Step 3: The dye liquor circulating in the dyeing vat enters the dye liquor pipe through the inlet pipe. The dye liquor flows between the dye liquor pipe and the flue gas pipe. During the flow, it exchanges heat with the flue gas, which raises the temperature of the dye liquor and lowers the temperature of the flue gas. Step 4: The flue gas enters the heat exchange tube (1) through the bend, and the dyeing liquid circulating in the dyeing tank enters the interlayer between the heat exchange tube (1) and the heat exchange cylinder (2) through the bend, and continues to exchange heat during the flow process; Step 5: After heat exchange, the flue gas is discharged from the heat exchange tube (1) and then enters the external air heat exchanger to heat the combustion air, further utilizing the waste heat of the flue gas. The flue gas can be centrally discharged to the outside through the pipeline. Step 6: After being heated, the dye liquor flows into the dye liquor outlet pipe (4) through the opening (8) and the dye liquor outlet pipe (5) aligned with the opening (8), and then enters the dyeing vat to achieve the purpose of heating the materials in the dyeing vat.

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