Smoke temperature purification and latent heat and sensible heat recovery system of cloth setting machine in bleaching and dyeing industry

Abstract

The present invention provides a smoke temperature purification and latent heat and sensible heat recovery system for a cloth setting machine in the bleaching and dyeing industry, belonging to the technical field of setting machines. The smoke temperature purification and latent heat and sensible heat recovery system for a cloth setting machine in the bleaching and dyeing industry comprises a spray tower, a smoke inlet is opened on one side of the tower, an air inlet pipe is fixedly connected to the notch of the air inlet, the air inlet pipe is connected to the smoke exhaust port of the setting machine, a plurality of water curtain nozzles are arranged inside, and the plurality of nozzles are evenly distributed in the tower. The device can process the short flocs and grease of cloth in the smoke generated by bleaching and dyeing, and recycle the waste heat and filtered water, thereby reducing the use cost and preventing the waste of resources, and at the same time reducing the influence of the smoke temperature on the surrounding environment.

Description

Technical Field

[0001] The invention belongs to the technical field of cloth setting machines, and in particular relates to a smoke temperature purification system and a latent heat and sensible heat recovery system of a cloth setting machine in the bleaching and dyeing industry. Background Art

[0002] At present, with the rapid development of social economy, more and more people begin to pay attention to dressing up, and various kinds of clothing have entered our lives. The mass production of clothing also dooms the rapid development of the textile industry. Since the color of the cloth is relatively single, generally white, and the scope of use is limited, bleaching and dyeing are required. In the bleaching and dyeing device, in order to improve the coloring effect, a bubbling device is usually set in the dyeing tank to improve the coloring rate. The function of the setting machine is to transfer the dye in the color paste to the inside of the fiber through steaming to achieve the color fixing effect. Its effect directly affects the color and brightness after printing. The main process parameters that affect the effect of the setting machine are temperature, humidity and steaming time. They have certain changes with different fibers and dyes. The fabric looping in the steaming process is a safe and reliable guarantee for the steaming time, quality and process.

[0003] The shaping machine works by means of heat supplied by a heating device, wherein the heating devices in the prior art all heat the heat transfer oil by means of a coal-heated boiler, and indirectly heat the air through the high-temperature heat transfer oil in an oil pipe, a radiator or a coil, thereby achieving temperature rise for operation. However, if the waste flue gas temperature generated by the shaping machine is not processed, it will have an impact on the surrounding environment, affect the health of the staff, and cause unnecessary production expenses. Summary of the invention

[0004] The purpose of the present invention is to provide a smoke temperature purification system and a latent heat and sensible heat recovery system for a cloth setting machine in the bleaching and dyeing industry, aiming to solve the problem that the setting machine in the prior art works by means of heating by a heating device, wherein the heating devices in the prior art all heat the heat transfer oil by means of a coal heating boiler, and indirectly heat the air through the high-temperature heat transfer oil in an oil pipe, a radiator or a coil to achieve temperature increase for work, but the waste smoke temperature generated by the setting machine is not processed, which will affect the surrounding environment.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The utility model comprises a tower, wherein an air inlet is provided at the left end of the tower, a plurality of nozzles are fixedly connected between the left and right inner walls of the tower, a heat exchanger is fixedly connected to the upper part of the left and right inner walls of the tower, a second water supply pipe is fixedly installed at the lower part of the left end of the tower, two water spray pipes are fixedly connected between the plurality of nozzles, the other ends of the two water spray pipes penetrate the surface of the tower and are fixedly connected to a heat pump host, an evaporator is arranged on the upper side of the heat pump host, a condenser is installed on the heat pump host, the lower end of the condenser is fixed to the plate heat exchanger by a first connecting pipe, a filter tube is fixedly connected to the lower end of the tower, two filters are fixedly connected to the rear end of the filter tube, the two filters are fixedly connected to the plate heat exchanger by a second connecting pipe, and the plate heat exchanger is fixedly connected to the heat pump host by a third connecting pipe.

[0007] As a preferred solution of the present invention, a normally closed solenoid valve C is installed in the second water supply pipe, a first manual valve is fixedly installed in the filter pipe, and a first water pump B and a first water pump A are fixedly installed in the first connecting pipe and the third connecting pipe respectively.

[0008] As a preferred solution of the present invention, a liquid level sensor is fixedly connected to the lower inner wall of the tower, and a filter screen is fixedly connected between the front and rear inner walls of the tower.

[0009] As a preferred solution of the present invention, a first water supply pipe is fixedly installed at the lower end of the tower, a high-temperature pipe is fixedly connected to the left end of the heat pump main unit, the high-temperature pipe and the first water supply pipe are connected, a normally closed solenoid valve B and a normally open solenoid valve A are fixedly installed in the first water supply pipe and the high-temperature pipe respectively, and a second manual valve is fixedly connected to the left part of the high-temperature pipe.

[0010] As a preferred solution of the present invention, a PLC controller is arranged on the left side of the tower, and a signal connection is established between the PLC controller and the liquid level sensor.

[0011] As a preferred solution of the present invention, a fin-tube surface cooler is fixedly connected to the upper end of the tower, and the fin-tube surface cooler is signal-connected to the heat pump host and the PLC controller.

[0012] As a preferred solution of the present invention, the lower part of the circumferential surface of the tower is fixedly connected to a sewage pump via a sewage suction pipe.

[0013] As a preferred solution of the present invention, the sewage suction port of the sewage suction pipe is located on the upper side of the filter screen.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this scheme, the system starts, the first water pump A, the normally open battery valve A is closed and the normally closed solenoid valve B is opened. When the liquid level below the spray tower reaches the set value (adjustable), the normally closed solenoid valve B is closed, the first water pump A is stopped, the first water pump B is started, and the tower starts spraying. When the temperature reaches the set value (adjustable), the first water pump A is started, and the heat pump host is started after a delay of 10 seconds, and the fin tube surface cooler is started. After the 100℃ flue gas in the setting machine enters the tower, it first passes through the water curtain spray to block 90% of grease and short flocs. The water temperature after spraying is 40-50℃ and forms an oil / water interface at the bottom of the tower. The sewage pump is started regularly to discharge short flocs and grease. The cleaner 50℃ water body passes through the filter and exchanges heat with the 30℃ heat exchanger water in the plate heat exchanger, then drops to 38℃ and enters the evaporator. After heat exchange with the refrigerant, it drops to 30-35℃ and enters the tower again for spraying and heat absorption. The 20℃ normal temperature water exchanges heat with the residual temperature gas after spraying in the heat exchanger at the top of the tower, and the temperature rises by 5℃ while further purifying the flue gas. After the heat pump host absorbs the sensible heat of the spray water in the evaporator, it uses the compressor to make a high-pressure medium to heat the 38℃ medium-temperature water exchanged by the plate heat exchanger to 50-60℃ medium-temperature water for use in the bleaching tank.

[0016] 2. In this scheme, the system will run once every 48 hours at 12:00 noon (the cleaning time can be freely set according to the actual operating conditions). The sewage pump will start, and the normally closed solenoid valve C will open to pass compressed air for 15 seconds and then close. When the liquid level in the tower drops to the set value, the normally closed solenoid valve B will start the water replenishment mode, and the sewage pump will stop after starting for 30 seconds.

[0017] 3. When the temperature is lower than the set value (adjustable), the heat pump host and the first water pump A will stop / the finned tube cooler will stop. On the contrary, when it is higher than the set value, the finned tube cooler and the host will start after the water pump A starts for 5 seconds. To avoid frequent start and stop, the temperature setting value needs to be considered with a wide range, such as 45℃±2℃------35℃±2℃. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a flow chart of the present invention;

[0020] Figure 2 It is a structural diagram of the tower in the present invention;

[0021] Figure 3 is a plan view of the tower in the present invention;

[0022] Figure 4 It is a system flow chart of the present invention.

[0023] In the figure: 1. heat pump main unit; 2. first water pump A; 3. first water pump B; 4. first manual valve; 5. normally closed solenoid valve C; 6. finned tube cooler; 7. liquid level sensor; 8. first water supply pipe; 9. sewage pump; 10. second manual valve; 11. normally open solenoid valve A; 12. normally closed solenoid valve B; 13. evaporator; 23. heat exchanger; 24. air inlet; 25. second water supply pipe; 31. filter; 32. plate heat exchanger; 34. tower. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1-4 , the present invention provides the following technical solutions:

[0027] The smoke temperature purification and latent heat and sensible heat recovery system of cloth setting machine in bleaching and dyeing industry,

[0028] It includes a tower 34, an air inlet 24 is opened at the left end of the tower 34, a plurality of nozzles are fixedly connected between the left and right inner walls of the tower 34, a heat exchanger 23 is fixedly connected to the upper part of the left and right inner walls of the tower 34, a second water supply pipe 25 is fixedly installed at the lower part of the left end of the tower 34, two water spray pipes are fixedly connected between the plurality of nozzles, the other ends of the two water spray pipes penetrate the surface of the tower 34 and are fixedly connected to the heat pump host 1, an evaporator 13 is arranged on the upper side of the heat pump host 1, a condenser is installed on the heat pump host 1, the lower end of the condenser is fixed to the plate heat exchanger 32 through a first connecting pipe, a filter tube is fixedly connected to the lower end of the tower 34, two filters 31 are fixedly connected to the rear end of the filter tube, the two filters 31 are fixedly connected to the plate heat exchanger 32 through a second connecting pipe, and the plate heat exchanger 32 is fixedly connected to the heat pump host 1 through a third connecting pipe.

[0029] In the specific embodiment of the present invention, all pipes are galvanized or treated with other anti-corrosion and anti-rust treatments to extend the service life of the device. The filter 31 can filter the used water so that the water can be used again. It can be adjusted to run once at 12:00 noon every 48 hours. The sewage pump 9 automatically starts and enters the sewage discharge program. At this time, the liquid level in the tower 34 goes low, and the liquid level sensor 7 detects that the liquid level is lower than the set value, so the normally open solenoid valve A11 is closed and the normally closed solenoid valve B12 is opened. The clean water from the water source after heat exchange enters the tower 34 again, completing the liquid level replenishment and replenishment. After the water reaches the liquid level, the normally open solenoid valve A11 and the normally closed solenoid valve B12 are reset, and the hot water continues to be delivered to the bleaching and dyeing tanks for use. After the 100°C flue gas in the setting machine enters the tower 34, the first water pump B3 is started, and spraying begins in the tower 34. When the temperature reaches the set value, the first water pump A2 is started, and after a delay of 10 seconds, the heat pump host 1 is started, and the fin tube surface cooler 6 is started. First, 90% of the grease and short flocs are blocked by water curtain spraying. The water temperature after spraying is 40-50°C and an oil / water interface is formed at the bottom of the tower 34. The sewage pump 9 is started regularly to discharge the short flocs and grease. The relatively clean 50℃ water passes through the filter 31, and then exchanges heat with the 30℃ hot water in the heat exchanger 23 in the plate heat exchanger 32, and then drops to 38℃ and enters the evaporator 13. After heat exchange with the refrigerant, it drops to 30-35℃ and enters the tower 34 again for spraying and heat absorption. The 20℃ water source enters the finned tube cooler 6, and exchanges heat with the relatively clean 50℃ flue gas after spraying to become 40℃ warm water and enters the plate heat exchanger 32. At the same time, the 50℃ flue gas is condensed by the finned tube cooler 6. The water flows into the tower 34, and the remaining clean air is discharged into the atmosphere. The warm water enters the heat pump condenser after passing through the plate heat exchanger 32, where it exchanges heat with the high-temperature and high-pressure medium discharged from the compressor of the heat pump host 1 to become 60°C medium-temperature water. The solenoid valve A11 and the second manual valve 10 are often opened and then transported to the bleaching and dyeing tank through the pipeline. On the other hand, the water sprayed in the tower 34 absorbs the smoke temperature and suppresses the short flocs in the smoke and gathers at the bottom of the tower 34 at 40°C. We call it "medium water". ", the grey water passes through a 100-mesh filter and then enters the second filter 31 through a drop, and then enters the plate heat exchanger 32 and is pumped into the heat pump evaporator 13 by the first water pump B3, where it exchanges heat with the medium after throttling by the heat pump expansion valve and drops to 35°C before being pumped into the tower 34 for spraying and reabsorbing the waste heat of the flue gas temperature, and this cycle is repeated repeatedly. The device can process the flue gas temperature generated by bleaching and dyeing, and recycle the waste heat and filtered water, thereby reducing the cost of use and preventing waste of resources. At the same time, it prevents the flue gas temperature from affecting the surrounding environment and preventing the factory employees from being affected by long-term inhalation. It needs to be explained that the specific type of heat pump host 1, the first water pump A2, the sewage pump 9 and the PLC controller to be used shall be selected by the relevant technical personnel familiar with the field, and the above-mentioned heat pump host 1, the first water pump A2, the sewage pump 9 and the PLC controller are all prior art, and this scheme will not be repeated.

[0030] For details, please refer to Figure 1 A normally closed electromagnetic valve C5 is installed in the second water supply pipe 25, a first manual valve 4 is fixedly installed in the filter pipe, and a first water pump B3 and a first water pump A2 are fixedly installed in the first connecting pipe and the third connecting pipe respectively.

[0031] In this embodiment: the normally closed electromagnetic valve C5, the first manual valve 4, the first water pump B3 and the first water pump A2 make the device more controllable and convenient to use.

[0032] For details, please refer to Figure 1 The lower inner wall of the tower 34 is fixedly connected with a liquid level sensor 7, and a filter screen is fixedly connected between the front and rear inner walls of the tower 34.

[0033] In this embodiment: the liquid level sensor 7 can measure the amount of water in the water tank, and can monitor and replenish the water in the water tank in time. The filter can filter out impurities to prevent impurities from entering the next process through the pipeline and causing damage to other components.

[0034] For details, please refer to Figure 1 A first water supply pipe 8 is fixedly installed at the lower end of the tower 34, and a high-temperature pipe is fixedly connected to the left end of the heat pump host 1. The high-temperature pipe and the first water supply pipe 8 are connected. A normally closed solenoid valve B12 and a normally open solenoid valve A11 are fixedly installed in the first water supply pipe 8 and the high-temperature pipe respectively, and a second manual valve 10 is fixedly connected to the left part of the high-temperature pipe.

[0035] In this embodiment: the first water supply pipe 8 is connected to the high temperature pipe and the floating tank 21, so that water can circulate.

[0036] For details, please refer to Figure 1 A PLC controller is provided on the left side of the tower 34 , and a signal connection is established between the PLC controller and the liquid level sensor 7 .

[0037] In this embodiment: the PLC controller makes the device easier to control, more convenient to use and more intelligent.

[0038] For details, please refer to Figure 3 The upper end of the tower 34 is fixedly connected with a fin-tube surface cooler 6, and the fin-tube surface cooler 6 is signal-connected to the heat pump host 1 and the PLC controller.

[0039] In this embodiment: the PLC controller controls the finned tube cooler 6 and the heat pump host 1 to start at an interval of ten seconds. When the temperature is lower than the adjustable set value, the heat pump host 1 and the first water pump A2 are shut down / the finned tube cooler 6 is shut down. On the contrary, when it is higher than the set value, the first water pump A2 is turned on for 5 seconds, and then the finned tube cooler 6 and the heat pump host 1 are turned on, and the device enters the sewage discharge stage. In order to avoid frequent start and stop, the temperature setting value needs to be considered to have a wide value, such as 45℃±2℃------35℃±2℃.

[0040] For details, please refer to Figure 4 The lower part of the circumferential surface of the tower 34 is fixedly connected with a sewage pump 9 through a sewage suction pipe.

[0041] In this embodiment: when the content of impurities and grease in the water reaches a certain value, the time control is automatically turned on to enter the sewage discharge program. At this time, the liquid level in the tower 34 decreases, and the liquid level sensor 7 detects that the liquid level is lower than the set value, so the normally open solenoid valve A11 is closed, and the normally closed solenoid valve B12 is opened, and the clean water from the water source after heat exchange enters the tower 34 again to complete the liquid level replenishment. After the replenishment reaches the liquid level, the normally open solenoid valve A11 and the normally closed solenoid valve B12 are reset, and the hot water continues to be delivered to the bleaching and dyeing tanks for use.

[0042] For details, please refer to Figure 1 The suction port of the suction pipe is located on the upper side of the filter screen.

[0043] In this embodiment, the sewage pump 9 cleans the dirt on the filter screen to prevent the filter screen from being blocked, affecting the next step, and prolonging the life of the device.

[0044] The working principle and use process of the present invention are as follows: after the flue gas at 100°C in the setting machine 26 enters the tower 34, the first water pump B3 is started, and spraying begins in the tower 34. When the temperature reaches the set value and is adjustable, the first water pump A2 is started, and after a delay of 10 seconds, the heat pump host 1 is started, and the fin tube surface cooler 6 is started. First, 90% of the grease and short flocs are blocked by water curtain spraying. The water temperature after spraying is 40-50°C and an oil / water interface is formed at the bottom of the tower 34. The sewage pump 9 is started regularly to discharge the short flocs and grease. The relatively clean 50℃ water passes through the filter 31, and then exchanges heat with the 30℃ heat exchanger 23 hot water in the plate heat exchanger 32, and then drops to 38℃ and enters the evaporator 13. After heat exchange with the refrigerant, it drops to 30-35℃ and enters the tower 34 for spraying and heat absorption. The 20℃ water source enters the finned tube cooler 6, and exchanges heat with the relatively clean 50℃ flue gas after spraying to become 40℃ warm water and enter the plate heat exchanger 32. At the same time, the 50℃ flue gas is condensed into water by the finned tube cooler 6 and flows into the tower 34. The remaining clean air is discharged into the atmosphere. The warm water enters the heat pump condenser after passing through the plate heat exchanger 32, and then exchanges heat with the high-temperature and high-pressure medium discharged from the compressor of the heat pump host 1 to become 60℃ medium-temperature water. The solenoid valve A11 and the second manual valve are often opened. 10, and then it is transported to the bleaching and dyeing tank by pipeline for use. On the other hand, the water after spraying in the tower 34 absorbs the smoke temperature and suppresses the short flocs in the smoke and gathers at the bottom of the tower 34 at 40°C. We call it "recycled water". The recycled water passes through a 100-mesh filter and then enters the second filter 31 through a drop, and then enters the plate heat exchanger 32 and is pumped into the heat pump evaporator 13 by the first water pump B3. Here, it exchanges heat with the medium after throttling by the heat pump expansion valve and drops to 35°C. It continues to be pumped into the tower 34 for spraying and reabsorbing the waste heat of the smoke temperature. This cycle is repeated continuously. The device can process the smoke temperature generated by bleaching and dyeing, and recycle the waste heat and filtered water, reducing the use cost and preventing resource waste, while reducing the impact of the smoke temperature on the surrounding environment.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The smoke temperature purification and latent heat and sensible heat recovery system of cloth setting machine in bleaching and dyeing industry is characterized by: The invention comprises a tower (34), wherein an air inlet (24) is provided at the left end of the tower (34), a plurality of nozzles are fixedly connected between the left and right inner walls of the tower (34), a heat exchanger (23) is fixedly connected to the upper part of the left and right inner walls of the tower (34), a second water supply pipe (25) is fixedly installed at the lower part of the left end of the tower (34), two water spray pipes are fixedly connected between the plurality of nozzles, the other ends of the two water spray pipes both penetrate the surface of the tower (34) and are fixedly connected to a heat pump host (1), an evaporator (13) is provided on the upper side of the heat pump host (1), a condenser is installed on the heat pump host (1), the lower end of the condenser is fixed to the plate heat exchanger (32) via a first connecting pipe, a filter tube is fixedly connected to the lower end of the tower (34), two filters (31) are fixedly connected to the rear end of the filter tube, and the two filters (31) are connected through The second connecting pipe is fixedly connected to a plate heat exchanger (32), and the plate heat exchanger (32) is fixedly connected to the heat pump main unit (1) via a third connecting pipe. A normally closed electromagnetic valve C (5) is installed in the second water supply pipe (25), and a first manual valve (4) is fixedly installed in the filter pipe. A first water pump B (3) and a first water pump A (2) are fixedly installed in the first connecting pipe and the third connecting pipe, respectively. A first water supply pipe (8) is fixedly installed at the lower end of the tower (34). A high-temperature pipe is fixedly connected to the left end of the heat pump main unit (1), and the high-temperature pipe and the first water supply pipe (8) are connected. A floating cylinder (21) is provided at the other end of the high-temperature pipe. A normally closed electromagnetic valve B (12) and a normally open electromagnetic valve A (11) are fixedly installed in the first water supply pipe (8) and the high-temperature pipe, respectively. A second manual valve (10) is fixedly connected to the left part of the high-temperature pipe.

2. The smoke temperature purification and latent heat and sensible heat recovery system of the cloth setting machine in the bleaching and dyeing industry according to claim 1 is characterized by: A liquid level sensor (7) is fixedly connected to the lower inner wall of the tower (34), and a filter screen is fixedly connected between the front and rear inner walls of the tower (34).

3. The smoke temperature purification and latent heat and sensible heat recovery system of the cloth setting machine in the bleaching and dyeing industry according to claim 1 is characterized by: A PLC controller is provided on the left side of the tower (34), and a signal connection is established between the PLC controller and the liquid level sensor (7).

4. The smoke temperature purification and latent heat and sensible heat recovery system of the cloth setting machine in the bleaching and dyeing industry according to claim 3 is characterized by: The upper end of the tower (34) is fixedly connected with a fin-tube surface cooler (6), and the fin-tube surface cooler (6) is signal-connected to the heat pump host (1) and the PLC controller.

5. The smoke temperature purification and latent heat and sensible heat recovery system of the cloth setting machine in the bleaching and dyeing industry according to claim 4 is characterized by: The lower part of the circumferential surface of the tower (34) is fixedly connected to a sewage pump (9) via a sewage suction pipe.

6. The smoke temperature purification and latent heat and sensible heat recovery system of the cloth setting machine in the bleaching and dyeing industry according to claim 5 is characterized by: The sewage suction port of the sewage suction pipe is located on the upper side of the filter screen.

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