Feeding device for vat dye
By employing a dual dye tank system and an inert gas protection design, the problems of oxidation and unevenness of vat dyes during the dyeing process are solved, enabling uninterrupted dyeing and uniform dye supply, thus ensuring the uniformity of fabric color.
Patent Information
- Application Number
- CN202423309875.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing technologies, vat dyes are easily oxidized and discolored during the dyeing process, resulting in uneven color in the same batch of fabric and requiring machine stoppage for re-addition, leading to discontinuous dyeing.
The system employs a dual dye tank design, which utilizes nitrogen protection and pressure-reducing pipelines, combined with a pneumatic diaphragm pump and premixing system to achieve uninterrupted material supply. Inert nitrogen gas is introduced into the dye tanks to prevent oxidation, and pressure-reducing pipelines are used to prevent sedimentation and agitation, ensuring uniform dye delivery.
This enables an uninterrupted dyeing process, avoids the oxidation of vat dyes, ensures the uniformity and continuity of color in the same batch of fabric, and improves dyeing quality.
Smart Images
Figure CN223674935U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to dyeing equipment technical field, concretely relates to a kind of feeding device of vat dye. BACKGROUND
[0002] The dyeing of cloth is by dyeing warp yarn, warp yarn is continuous several yarns on loom, but the dye in dye tank needs to be stopped when it is used up, re-adding dye and then re-starting, but this will lead to uneven dyeing at warp yarn stop-restart, and some vat dyes are easily oxidized, and the vat dye after oxidation will change color, which leads to large color difference of vat dye in the same dyeing tank from starting dyeing to ending dyeing, resulting in color inconsistency of the same batch of cloth. SUMMARY
[0003] The utility model aims at overcoming the insufficient of prior art, provide a kind of feeding device of vat dye, can provide dye for dyeing machine without interruption, while can guarantee that dye is not oxidized and changed color.
[0004] To achieve the above object, the technical scheme of the utility model is as follows: a kind of feeding device of vat dye, including first dye tank and second dye tank, first dye tank and second dye tank are connected with nitrogen pipeline, pressure regulating valve is arranged on nitrogen pipeline, the discharge port of first dye tank and second dye tank is connected with dyeing machine by feeding pipeline, feeding valve is arranged at the discharge port of first dye tank and second dye tank, feeding pump is arranged on feeding pipeline.
[0005] Preferably, a pressure gauge is provided on the nitrogen pipeline.
[0006] Preferably, the feeding pump is a pneumatic diaphragm pump, and a pneumatic valve is provided on the gas circuit of the pneumatic diaphragm pump.
[0007] Preferably, a flow meter and a proportional valve are sequentially provided between the feeding pump and the dyeing machine, and the flow meter is arranged close to the feeding pump.
[0008] Preferably, it further includes a pressure reducing pipeline, one end of the pressure reducing pipeline is connected to the first dye tank and the second dye tank respectively, a pressure reducing pipeline valve is arranged on the pressure reducing pipeline, the other end of the pressure reducing pipeline is connected to the feeding pipeline, and the other end of the pressure reducing pipeline is connected to the side close to the dyeing machine of the feeding pump.
[0009] Preferably, one end of the pressure reducing pipeline is connected to the lower part of the first dye tank and the second dye tank respectively.
[0010] Preferably, the nitrogen pipeline is connected to the upper side of the first dye tank and the second dye tank.
[0011] Preferably, the first and second dye tanks are connected with a premixing system.
[0012] Preferably, the premixing system comprises a premixing tank and a feeding pipeline, a stirring device is arranged in the premixing tank, and the feeding pipeline is connected between the premixing tank and the first and second dye tanks, and a feeding pump is arranged on the feeding pipeline.
[0013] Preferably, the premixing tank is connected with a circulating pipeline, the feeding pipeline is connected to the lower side of the premixing tank, one end of the circulating pipeline is connected to the feeding pipeline, the circulating pipeline is connected to the side of the feeding pump away from the premixing tank, and the other end of the circulating pipeline is connected to the premixing tank.
[0014] Preferably, an air blowing pipeline is connected to the side of the feeding pump close to the premixing tank, and an air blowing valve is arranged on the air blowing pipeline.
[0015] Preferably, a blow-off pipeline is connected to the side of the feeding pump close to the premixing tank, and a blow-off valve is arranged on the blow-off pipeline.
[0016] Preferably, the premixing tank is connected with a nitrogen gas inlet pipeline.
[0017] Compared with the prior art, the above technical solution has the following beneficial effects:
[0018] 1. The utility model discloses two dye tanks, respectively first dye tank and second dye tank, and the discharge port of two dye tanks is connected with a dyeing machine through a feeding pipeline. When dyeing cloth, the feeding valve of the discharge port of one of the dye tanks is opened first, and the dye is fed into the dyeing machine. When the dye in the dye tank is almost used up, the feeding valve of the other dye tank is opened. After the dye is stably fed, the feeding valve of the first dye tank is closed and the dye is added. The process is repeated to continuously feed the dye without stopping the dyeing process. The cloth can be continuously dyed until the dyeing is completed. Nitrogen gas is introduced into the dye tank to prevent the reduction dye from being oxidized by air, ensure the color uniformity of the same batch of cloth, and improve the uniformity of dyeing.
[0019] 2. The pressure of the pneumatic diaphragm pump is large. A pneumatic valve is arranged on the gas path of the pneumatic diaphragm pump to reduce the pressure of the pneumatic diaphragm pump. However, the pressure of the feeding pipeline is still large, which can easily damage the pneumatic diaphragm pump. Therefore, a pressure reducing pipeline is arranged to reduce the pressure of the dye in the output end of the pneumatic diaphragm pump and improve the service life of the pneumatic diaphragm pump.
[0020] 3. After the pressure-reducing pipeline is diverted, the dye is transported back to the dyeing tank. Since some vat dyes are prone to precipitation, the pressure-reducing pipeline transports the dye back to the dyeing tank from the bottom, which stirs the dye solution in the dyeing tank and prevents the dye from settling. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model.
[0022] Figure 2 This is a schematic diagram of the premixed feed system.
[0023] The components include: 1. First dye tank; 2. Second dye tank; 3. Nitrogen pipeline; 4. Pressure gauge; 5. Pressure regulating valve; 6. Pressure reducing pipeline; 7. Pressure reducing pipeline valve; 8. Feeding pipeline; 9. Feeding valve; 10. Pneumatic diaphragm pump; 11. Flow meter; 12. Proportional valve; 13. Dyeing machine; 14. Premix tank; 15. Stirring device; 16. Nitrogen inlet pipe; 17. Water inlet pipe; 18. Air outlet; 19. Feeding port; 20. Conveying pipeline; 21. Circulation pipeline; 22. Conveying valve; 23. Circulation valve; 24. Conveying pump; 25. Air blowing valve; 26. Air blowing pipeline; 27. Drain valve; 28. Drain pipe. Detailed Implementation
[0024] Figures 1-2 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-2 The present invention will be further described below.
[0025] like Figure 1 As shown, this utility model discloses a feeding device for a vat dye, comprising a first dye tank 1 and a second dye tank 2. In this embodiment, indigo dye is used as an example. Indigo dye is used for dyeing denim warp yarns. Indigo dye is easily oxidized. The outlets of both the first dye tank 1 and the second dye tank 2 are connected to a dyeing machine 13 via feeding pipes 8. Feeding valves 9 are installed at the outlets of both the first dye tank 1 and the second dye tank 2. A feeding pump is installed on the feeding pipes 8, which transports the liquid indigo from the dye tanks to the dyeing machine for dyeing. When dyeing denim fabric, the feeding valve 9 at the outlet of the first dye tank 1 is opened first, and indigo is fed into the dyeing machine 13. When the dye in the first dye tank 1 is almost used up, the feeding valve 9 of the second dye tank 2 is opened. After the indigo is stably fed, the feeding valve 9 of the first dye tank 1 is closed, and indigo is fed into the first dye tank 1. When the dye in the second dye tank 2 is almost used up, the feeding valve 9 of the second dye tank 2 is closed again, and indigo is fed from the first dye tank 1 to the second dye tank 2. This cycle is repeated to achieve uninterrupted feeding.
[0026] The first dye tank 1 and the second dye tank 2 in the embodiment are connected with nitrogen pipelines 3, nitrogen is used to prevent the indigo dye from being oxidized by air, a pressure gauge 4 and a pressure regulating valve 5 are arranged on the nitrogen pipelines 3, the pressure of the nitrogen pipelines 3 is adjusted through the pressure regulating valve 5, the pressure in the first dye tank 1 and the second dye tank 2 is kept stable, and the nitrogen pipelines 3 are connected to the upper sides of the first dye tank 1 and the second dye tank 2.
[0027] A flow meter 11 and a proportional valve 12 are arranged between the feeding pump and the dyeing machine 13 in sequence, the flow meter 11 is arranged close to the feeding pump, the flow meter 11 is used to monitor the flow of the feeding pipeline 8, the pressure of the feeding pipeline 8 is adjusted through the proportional valve 12, and the flow rate of the feeding pipeline 8 when feeding the dyeing machine 13 is ensured to be stable.
[0028] In the embodiment, the feeding pump is a pneumatic diaphragm pump 10, the pneumatic diaphragm pump 10 uses compressed air as a power source, and can be used to pump various corrosive liquids, liquids with particles, high-viscosity, volatile, flammable and toxic liquids, but the pressure of the pneumatic diaphragm pump 10 is relatively large, therefore, a pneumatic valve is arranged on the compressed air pipeline of the pneumatic diaphragm pump 10 to reduce the pressure of the pneumatic diaphragm pump 10, but only reducing the pressure of the pneumatic diaphragm pump 10 is not enough, the pressure of the feeding pipeline 8 is still relatively large, and the pneumatic diaphragm pump 10 is easy to be damaged, therefore, a pressure reducing pipeline 6 is arranged, the pressure reducing pipeline 6 can reduce the pressure of the indigo dye at the output end of the pneumatic diaphragm pump 10, and improve the service life of the pneumatic diaphragm pump 10.
[0029] Specifically, one end of the pressure reducing pipeline 6 is connected to the first dye tank 1 and the second dye tank 2 respectively, the other end of the pressure reducing pipeline 6 is connected to the feeding pipeline 8, the other end of the pressure reducing pipeline 6 is connected between the pneumatic diaphragm pump 10 and the flow meter 11, a pressure reducing pipeline valve 7 is arranged on the pressure reducing pipeline 6, and the pressure reducing pipeline valve 7 is used to control whether the pressure reducing pipeline 6 is opened or not; one end of the pressure reducing pipeline 6 is connected to the lower parts of the first dye tank 1 and the second dye tank 2 respectively, since the indigo is easy to precipitate, the indigo is transported back to the dyeing tank after being divided by the pressure reducing pipeline 6, the indigo is transported back to the dyeing tank from the lower part of the dyeing tank by the pressure reducing pipeline 6, the indigo in the dyeing tank is stirred, and the precipitation of the indigo is prevented.
[0030] As Figure 2As shown, the first dye tank 1 and the second dye tank 2 are also connected with a premixing system, the indigo raw material is premixed in the premixing system before being introduced into the dye tank, so that the indigo dye liquor is more uniform. The premixing system comprises a premixing tank 14 and a feeding pipeline 20, the premixing tank 14 is provided with a stirring device 15, the premixing tank 14 is provided with a feeding opening 19, and the premixing tank 14 is further connected with a water inlet pipe 17. The indigo raw material is added from the feeding opening 19, the indigo raw material is mixed with water, the stirring device 15 rotates to uniformly mix the indigo raw material with water, the feeding pipeline 20 is connected between the premixing tank 14 and the first dye tank 1 and the second dye tank 2, the feeding pipeline is provided with a feeding pump 24, and each of the first dye tank 1 and the second dye tank 2 is provided with a feeding valve 22. The indigo dye liquor premixed in the premixing tank 14 is fed to the first dye tank 1 and the second dye tank 2 through the feeding pump 24.
[0031] The premixing tank 14 in the embodiment is also connected with a nitrogen inlet pipe 16, nitrogen is introduced into the premixing tank 14, an air outlet 18 is formed on the upper side of the premixing tank 14, air in the tank is discharged from the air outlet 18, and nitrogen is in the upper space of the premixing tank 14 to prevent the indigo dye liquor from being oxidized by air.
[0032] The premixing tank 14 is connected with a circulating pipeline 21, the feeding pipeline 20 is connected to the lower side of the premixing tank 14, one end of the circulating pipeline 21 is connected to the feeding pipeline 20, the circulating pipeline 21 is connected to the side of the feeding pump 24 away from the premixing tank 14, and the other end of the circulating pipeline 21 is connected to the premixing tank 14. The circulating pipeline 21 is provided with a circulating valve 23. The indigo raw material is prone to deposit at the bottom of the tank. The circulation of the circulating pipeline 21 can make the indigo dye liquor more uniformly mixed. Before the indigo dye liquor is introduced into the first dye tank 1 and the second dye tank 2, the circulating valve 23 is opened, the indigo dye liquor is fully mixed and uniformly mixed through the stirring device 15 and the circulating pipeline 21, then the circulating valve 23 is closed and the feeding valve 22 of any dye tank is opened, and the indigo dye liquor is fed to the dye tank.
[0033] Since the indigo raw material is prone to deposit, the bottom of the feeding pipeline 20 or the premixing tank 14 can be blocked. Therefore, an air blowing pipeline 26 is connected to the side of the feeding pump 24 close to the premixing tank 14, the air blowing pipeline 26 is provided with an air blowing valve 25, the air blowing valve 25 is opened, and gas is introduced into the feeding pipeline 20 to blow away the blocked part. The side of the feeding pump 24 close to the premixing tank 14 is also connected with a blowdown pipe 28, the blowdown pipe 28 is provided with a blowdown valve 27, the blowdown valve 27 is opened, and the deposited impurities in the pipeline can be discharged.
[0034] The utility model discloses a first dye tank 1 and second dye tank 2 are passed to in -premixing material system after even mixing indigo raw material, first dye tank 1 discharge port's feeding valve 9 is opened to the delivery indigo to dyeing machine 13, and the pressure reducing pipeline 6 is shunted to the indigo behind pneumatic diaphragm pump 10, when the dye in first dye tank 1 is almost used up, open second dye tank 2's feeding valve 9, after its stable delivery indigo, first dye tank 1's feeding valve 9 is closed, and is added to first dye tank 1, when the dye in second dye tank 2 is almost used up, close second dye tank 2's feeding valve 9 again, and indigo is delivered from first dye tank 1, and is added to second dye tank 2, and this cycle realizes the uninterrupted feed, and inert gas nitrogen is passed to in the dye tank, and nitrogen prevents indigo dye liquor from being oxidized by air, ensures the same batch of jeans cloth color uniformity, improves the evenness of dyeing.
[0035] The above is only the preferred embodiment of the utility model, and is not other forms of the limitation of the utility model, and any skilled person in the art can utilize the disclosed technical content to change or modify equivalent embodiments of equivalent changes. But, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model without departing from the technical scheme content of the utility model still belongs to the protection scope of the technical scheme of the utility model.
Claims
1. A dosing device for vat dyes, characterized in that: The application relates to a dye feeding system, which comprises a first dye tank (1) and a second dye tank (2), nitrogen pipelines (3) are connected to the first dye tank (1) and the second dye tank (2), pressure regulating valves (5) are arranged on the nitrogen pipelines (3), discharge outlets of the first dye tank (1) and the second dye tank (2) are connected to a dyeing machine (13) through feeding pipelines (8), feeding valves (9) are arranged at the discharge outlets of the first dye tank (1) and the second dye tank (2), and feeding pumps are arranged on the feeding pipelines (8).
2. A feeder device for vat dyes according to claim 1, characterised in that: The feeding pump is a pneumatic diaphragm pump (10), pneumatic valves are arranged on the gas paths of the pneumatic diaphragm pump (10).
3. A feeder device for vat dyes according to claim 1, characterised in that: Flow meters (11) and proportional valves (12) are sequentially arranged between the feeding pump and the dyeing machine (13), and the flow meters (11) are arranged close to the feeding pump.
4. A feeder device for vat dyes according to claim 1, characterised in that: The application further comprises a pressure reducing pipeline (6), a pressure reducing pipeline valve (7) is arranged on the pressure reducing pipeline (6), one end of the pressure reducing pipeline (6) is connected to the first dye tank (1) and the second dye tank (2), the other end of the pressure reducing pipeline (6) is connected to the feeding pipeline (8), and the other end of the pressure reducing pipeline (6) is connected to one side of the feeding pump close to the dyeing machine (13).
5. A reducing dye feeding device according to claim 4, characterized in that: One end of the pressure reducing pipeline (6) is connected to the lower portions of the first dye tank (1) and the second dye tank (2).
6. A feeder device for vat dyes according to claim 1, characterised in that: The nitrogen pipelines (3) are connected to the upper sides of the first dye tank (1) and the second dye tank (2).
7. A feeder device for vat dyes according to claim 1, characterised in that: The first dye tank (1) and the second dye tank (2) are connected with a premixing system.
8. A reducing dye feeding device according to claim 7, characterized in that: The premixing system comprises a premixing tank (14) and a feeding pipeline (20), a stirring device (15) is arranged in the premixing tank (14), the feeding pipeline (20) is connected between the premixing tank (14) and the first dye tank (1) and the second dye tank (2), and a feeding pump (24) is arranged on the feeding pipeline.
9. A reducing dye feeding device according to claim 8, characterized in that: The premixing tank (14) is connected with a circulating pipeline (21), the feeding pipeline (20) is connected to the lower side of the premixing tank (14), one end of the circulating pipeline (21) is connected to the feeding pipeline (20), the circulating pipeline (21) is connected to one side of the feeding pump (24) away from the premixing tank (14), and the other end of the circulating pipeline (21) is connected to the premixing tank (14).
10. A feeder device for vat dyes according to claim 8, characterised in that: An air blowing pipeline (26) is connected to one side of the feeding pump (24) close to the premixing tank (14), and an air blowing valve (25) is arranged on the air blowing pipeline (26).