Automatic adjusting device for pH value of dye and dyeing machine

Abstract

The utility model is applicable to the technical field of dyeing machines, and discloses a dye pH value automatic adjusting device and a dyeing machine, which comprise a dye cylinder, a transition barrel, a pH value monitoring component, a heat exchanger, a liquid return header pipe, a discharge pipe, an acid liquor storage barrel and an acid-resistant pump. The liquid return header pipe is connected with the liquid return branch pipe with the inner diameter smaller than that of the liquid return header pipe, and the heat exchanger is arranged on the liquid return branch pipe, so that the temperature of the dye to be monitored can be controlled without completely cooling the dye through the heat exchanger, and partial heat loss can be reduced; when the dye in the dye vat is conveyed back to the heat exchanger matched with the dyeing machine, the energy consumption required by the heat exchanger matched with the dyeing machine can be reduced. The automatic adjusting device for the pH value of the dye further comprises an alkali liquor storage barrel and an alkali-resisting pump, and when the pH value monitoring assembly monitors that the pH value of the dye is low, the pH value of the dye can be made to be high in the mode that alkali liquor is pumped into the dye cylinder.

Description

Technical Field

[0001] This utility model relates to the field of dyeing machine technology, and in particular to an automatic pH adjustment device for dyes and a dyeing machine. Background Technology

[0002] A dyeing machine is a piece of equipment used in the textile industry, primarily for dyeing textiles. For example... Figure 1 As shown, existing dyeing machines typically include a dyeing machine body 1, a heat exchanger 2 located on one side of the dyeing machine body 1, and a dye tank 3 for storing dye. During operation, the dye in the dye tank 3 is transported through pipes to the heat exchanger 2 for heating, and then transported through pipes to the nozzles inside the dyeing machine body 1. The dye in the dyeing machine body 1 is then circulated back into the dye tank 3 through pipes. During the dyeing process, the concentration of auxiliaries in the dye may change, leading to unstable pH values. Therefore, to ensure stable pH values ​​during the dyeing process, it is necessary to monitor the pH value of the dye and adjust it promptly when instability occurs.

[0003] To this end, Chinese patent document CN109355848B discloses an automatic pH control system for a high-temperature dyeing machine, including a monitoring device and an acid tracking device. The monitoring device includes multiple pipelines, a cooling device, a temperature sensing rod, a storage tank, a pH monitoring probe, and a circulating liquid tank. The cooling device can cool the dye / liquid to ensure the dye temperature does not exceed 25°C, thereby controlling the dye temperature during monitoring. After flowing through the cooling device, the dye is then transported to the storage tank and the circulating liquid tank.

[0004] However, the dyes transported to the circulating liquid tank need to be kept at a certain high temperature when they are reinjected into the dyeing machine. If the dyes transported to the circulating liquid tank are cooled down at the same time, heat energy will inevitably be wasted. In addition, the pH automatic acid control system of the disclosed high-temperature dyeing machine can only perform acid replenishment operation. When the pH value of the dye is too low, it cannot adjust the pH value of the dye to a higher level.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] The present invention provides an automatic pH adjustment device for dyes and a dyeing machine, which aims to solve the problem that the existing automatic pH control system of high-temperature dyeing machines can only perform acid-addition operation and will cause heat energy waste.

[0007] To achieve the above objectives, the solution provided by this utility model is as follows:

[0008] The application discloses a dye pH automatic adjusting device, which comprises a dye vat, a transition barrel fixed above the dye vat, a pH monitoring assembly arranged in the transition barrel, a heat exchanger connected with the transition barrel, a liquid return main pipe connected with a discharge port of a dyeing machine body, a discharge pipe arranged at the bottom of the transition barrel and communicated with the inside of the dye vat, an acid liquid storage barrel connected with the dye vat, and an acid-resistant pump for pumping the acid liquid from the acid liquid storage barrel to the dye vat.

[0009] The liquid return branch pipe is connected with the liquid return main pipe, and the inner diameter of the liquid return branch pipe is smaller than that of the liquid return main pipe; the liquid return branch pipe penetrates through the heat exchanger and is connected with the transition barrel.

[0010] The alkali liquid storage barrel is connected with the dye vat.

[0011] The alkali-resistant pump is used for pumping the alkali liquid from the alkali liquid storage barrel to the dye vat.

[0012] Preferably, the pH monitoring assembly comprises:

[0013] The flow cell is vertically arranged in the transition barrel, and a flow channel is vertically arranged in the flow cell.

[0014] The pH monitoring electrode is vertically inserted into the flow channel.

[0015] The liquid inlet pipe is communicated with the flow channel, and the liquid inlet pipe is detachably connected with the liquid return branch pipe.

[0016] The liquid outlet pipe is communicated with the flow channel, and the liquid outlet pipe is higher than the liquid inlet pipe.

[0017] Preferably, two temperature sensors are arranged on the liquid return branch pipe, and the two temperature sensors are respectively arranged on the two sides of the heat exchanger.

[0018] Preferably, a stirring assembly is arranged in the dye vat.

[0019] Preferably, the acid liquid storage barrel and the alkali liquid storage barrel are of the same structure, the acid liquid storage barrel comprises a barrel body, a frame body for supporting the barrel body, a weight sensor arranged on the frame body and fixedly connected with the outer wall of the barrel body, a liquid discharge pipe connected with the bottom of the barrel body, and an electric valve arranged on the liquid discharge pipe; the liquid discharge pipe is communicated with the dye vat.

[0020] Preferably, an observation window is arranged on the lower side of the barrel body.

[0021] Preferably, the dye pH automatic adjusting device further comprises:

[0022] The input end and the output end of the first circulating pump are both connected with the liquid return main pipe, and the first circulating pump is located upstream of the liquid return branch pipe and the liquid return main pipe.

[0023] Preferably, the liquid inlet pipe and the liquid return branch pipe are connected through flanges.

[0024] The utility model also provides a dyeing machine which comprises the pH value automatic adjusting device of dye.

[0025] Beneficial effects:

[0026] The utility model provides a pH value automatic adjusting device of dye and dyeing machine, through with the smaller liquid return branch pipe of inner diameter of liquid return main pipe connection, and make heat exchanger set up on liquid return branch pipe, can make dye need not all through heat exchanger cooling, can control the temperature of dye to be monitored, therefore can reduce partial heat loss, make dye still can carry higher heat in dye vat and deliver to the heat exchanger of dyeing machine matching, when dye in dye vat is transported back to the heat exchanger of dyeing machine matching again, the energy consumption of heat exchanger of dyeing machine matching can reduce.

[0027] In addition, the pH value automatic adjusting device of dye provided by the utility model further comprises an alkali storage cylinder and an alkali-resistant pump, when the pH value monitoring assembly monitors that the pH value of the dye is low, the pH value of the dye can be made to be high by pumping alkali into the dye vat. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structure schematic diagram of existing dyeing machine.

[0029] Figure 2 It is the structure schematic diagram of the pH value automatic adjusting device of dye provided by the utility model.

[0030] Figure 3 It is Figure 2 The enlarged view of part A in Fig.

[0031] Figure 4 It is Figure 2 The enlarged view of part B in Fig.

[0032] EXPLANATION OF REFERENCE NUMBERS:

[0033] 1-dyeing machine body; 2-heat exchanger; 3-dye vat;

[0034] 4-transition bucket; 41-discharge pipe;

[0035] 5-pH value monitoring assembly; 51-flow cell; 52-flow channel; 53-pH value monitoring electrode; 54-liquid inlet pipe; 55-liquid outlet pipe;

[0036] 6-heat exchanger; 7-liquid return main pipe;

[0037] 8-acid liquid storage barrel; 81-barrel body; 82-frame; 83-weight sensor; 84-drain pipe; 85-electric valve; 86-observation window;

[0038] 9-liquid return branch pipe; 10-alkali liquid storage barrel; 11-acid-proof pump; 12-alkali-proof pump; 13-second circulating pump; 14-temperature sensor; 15-stirring assembly; 16-first circulating pump; 17-flange plate; 18-liquid injection pipe. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0041] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element.

[0042] In addition, the descriptions of "first", "second", etc. in the present application are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0043] Please refer to Figures 2 to 4 The present application provides a kind of pH value automatic regulating device of dye, including dye vat 3, transition bucket 4, pH value monitoring component 5, heat exchanger 6, liquid return main pipe 7, discharge pipe 41, and with dye vat 3 connection acid liquid storage barrel 8 and be used for the acid liquid from acid liquid storage barrel 8 pumping to dye vat 3 in acid-proof pump 11.

[0044] The dye cylinder 3 is not limited to one, and before starting the dyeing operation, the staff configures the dye required for dyeing the textile and fills the dye cylinder 3. Further, the dye cylinder 3 is provided with a liquid filling pipe 18 at the bottom, which is connected with the heat exchanger 62 matched with the dyeing machine, so that the dye can be transported to the heat exchanger 62 matched with the dyeing machine by the second circulating pump 13 to be heated, and the dye is filled into the nozzle of the dyeing machine body 1 after being heated.

[0045] The transition barrel 4 is fixed above the dye cylinder 3, the discharge pipe 41 is arranged at the bottom of the transition barrel 4 and communicates with the inside of the dye cylinder 3; the pH value monitoring assembly 5 is arranged in the transition barrel 4; the heat exchanger 6 is connected with the transition barrel 4; the liquid return main pipe 7 is connected with the discharge port of the dyeing machine body 1; the liquid return branch pipe 9 is connected with the liquid return main pipe 7, and the inner diameter of the liquid return branch pipe 9 is smaller than that of the liquid return main pipe 7, the liquid return branch pipe 9 penetrates through the heat exchanger 6 and is connected with the transition barrel 4. When the dye in the dyeing machine body 1 is recycled, the dye is discharged from the discharge port of the dyeing machine body 1 and enters the liquid return main pipe 7. Since the liquid return main pipe 7 is connected with the liquid return branch pipe 9, when the dye enters the liquid return main pipe 7, it will be divided into two paths, one path is transported to the dye cylinder 3 by the liquid return main pipe, and the other path is transported to the transition barrel 4 by the liquid return branch pipe 9 after being cooled by the heat exchanger 6, and is monitored by the pH value monitoring assembly 5. It can be seen that by arranging the heat exchanger 6 on the liquid return branch pipe 9, the dye does not need to be cooled by the heat exchanger 6, so that part of the heat loss can be reduced, and the dye in the dye cylinder 3 can still carry a high heat to the heat exchanger 6 matched with the dyeing machine, so that the energy consumption of the heat exchanger 6 matched with the dyeing machine can be reduced when the dye in the dye cylinder 3 is transported to the heat exchanger 6 matched with the dyeing machine again.

[0046] Further, in the utility model, the inner diameter of the liquid return branch pipe 9 is smaller than that of the liquid return main pipe 7, so that the amount of dye transported to the transition barrel 4 through the liquid return branch pipe 9 is small, thereby further reducing the heat damage.

[0047] In addition, the pH value automatic monitoring device for dye provided by the utility model further comprises a lye storage barrel and an alkali-resistant pump 12. The lye storage barrel 10 is connected with the dye cylinder 3, and sodium carbonate lye can be stored in the lye storage barrel 10; and the alkali-resistant pump 12 is used for pumping the lye from the lye storage barrel 10 to the dye cylinder 3, so that when the pH value monitoring assembly 5 monitors that the pH value of the dye is low, the pH value of the dye can be made to be high by pumping the lye into the dye cylinder 3.

[0048] Preferably, the pH monitoring assembly 5 comprises a flow cell 51, a pH monitoring electrode 53, an inlet pipe 54 and an outlet pipe 55. The flow cell 51 is vertically arranged in the transition barrel 4, and a flow channel 52 is vertically formed in the flow cell 51. The pH monitoring electrode 53 is vertically arranged in the flow channel 52, and the pH monitoring electrode 53 is electrically connected with a controller. The inlet pipe 54 is in communication with the flow channel 52, and the inlet pipe 54 is detachably connected with the liquid return branch pipe 9. In this way, the dye in the liquid return branch pipe 9 can be conveyed into the flow channel 52 through the inlet pipe 54, so as to be monitored by the pH monitoring electrode 53, and the connection between the inlet pipe 54 and the liquid return branch pipe 9 ensures that the pH monitoring assembly 5 is installed in the transition barrel 4.

[0049] In addition, the outlet pipe 55 is in communication with the flow channel 52, and the outlet pipe 55 is higher than the inlet pipe 54. Optionally, the outlet pipe 55 is in the shape of inverted L, and the outlet of the outlet pipe 55 is located in the transition barrel 4. During actual monitoring, after the dye enters the flow channel 52 from the inlet pipe 54, the dye can slowly flow upward, be monitored by the pH monitoring electrode 53, and then be discharged into the transition barrel 4 through the outlet pipe 55. The arrangement that the outlet pipe 55 is higher than the inlet pipe 54 ensures that the flow rate of the dye in the flow channel 52 is not too fast, so as to ensure the accuracy of the pH monitoring of the dye by the pH monitoring electrode 53.

[0050] In order to realize the detachable connection between the inlet pipe 54 and the liquid return branch pipe 9, and to facilitate the disassembly and assembly of the pH monitoring assembly 5 and the maintenance of the pH monitoring assembly 5, in a preferred embodiment, the inlet pipe 54 and the liquid return branch pipe 9 are connected through two flanges 17, the two flanges 17 are fixedly sleeved on the inlet pipe 54 and the liquid return branch pipe 9 respectively, and the two flanges 17 are connected through a threaded connecting piece. When the pH monitoring assembly 5 needs to be disassembled, the threaded connecting piece is only needed to be unscrewed, so that the pH monitoring assembly 5 can be separated from the liquid return branch pipe 9.

[0051] Preferably, two temperature sensors 14 are arranged on the liquid return branch pipe 9, and the two temperature sensors 14 are arranged on the two sides of the heat exchanger 6 respectively. The temperature sensors 14 are electrically connected with the controller, and the two temperature sensors 14 are respectively used for monitoring the temperature of the dye before entering the heat exchanger 6 and the temperature of the dye after being cooled by the heat exchanger 6. Specifically, the temperature of the dye before entering the heat exchanger 6 is monitored by the temperature sensor 14, so as to control the working state of the heat exchanger 6, such as whether to start the heat exchanger 6 or not; and the temperature of the dye after being cooled by the heat exchanger 6 is monitored by the temperature sensor 14, so as to facilitate the adjustment of the flow rate or flow of the cooling water entering the heat exchanger 6.

[0052] Preferably, the dye vat 3 is provided with a stirring assembly 15. The stirring assembly 15 comprises a driving electrode, a stirring rod and blades arranged on the stirring rod. When the stirring assembly 15 is started, it can accelerate the mixing of the dye with the acid or alkali in the dye vat 3, so that the pH value of the dye can be quickly changed.

[0053] Preferably, the acid storage barrel 8 and the alkali storage barrel 10 are identical in structure, and each comprises a barrel body 81, a frame body 82 for supporting the barrel body 81, a weight sensor 83 arranged on the frame body 82 and fixedly connected with the outer wall of the barrel body 81, a liquid outlet pipe 84 connected with the bottom of the barrel body 81, and an electric valve 85 arranged on the liquid outlet pipe 84 and electrically connected with the controller. The liquid outlet pipe 84 is communicated with the dye vat 3, the acid-resistant pump 11 and the alkali-resistant pump 12 are electrically connected with the controller, and the input end and the output end of the acid-resistant pump 11 and the alkali-resistant pump 12 are connected with the liquid outlet pipe 84, so that the acid and the alkali in the acid storage barrel 8 and the alkali storage barrel 10 can be respectively pumped into the dye vat 3 through the liquid outlet pipe 84.

[0054] The weight sensor 83 is provided with a plurality of weight sensors 83, which are also electrically connected with the controller. Through the weight sensor 83 arranged on the frame body 82 and fixedly connected with the outer wall of the barrel body 81, the total weight of the barrel body 81 and the acid or alkali in the barrel body 81 can be monitored, and the monitoring result can be fed back to the controller.

[0055] When the pH value monitoring assembly 5 monitors that the pH value of the dye deviates from the pH value range required by the dyeing process, the controller (which can be a PLC controller) compares the monitored pH value of the dye with the pH value required by the dyeing process, and judges whether to add acid or alkali to the dye vat through the program. Through the monitoring of the weight sensor 83, the weight of the added alkali or acid when the pH value of the dye returns to the pH value range required by the dyeing process can be obtained, so that the production can be guided, so as to automatically control the addition amount of the acid or alkali by the program.

[0056] Preferably, the lower side of the barrel body 81 is provided with an observation window 86, so as to facilitate the staff to observe whether the acid or alkali needs to be added to the inside of the barrel body 81.

[0057] Preferably, the pH value automatic adjusting device of the dye further comprises a first circulating pump 16. The input end and the output end of the first circulating pump 16 are connected with the liquid return main pipe 7, and the first circulating pump 16 is located upstream of the liquid return branch pipe 9 and the liquid return main pipe 7, so that when the first circulating pump 16 is started, the first circulating pump 16 can provide power for the dye to be transported into the liquid return main pipe 7 and the liquid return branch pipe 9.

[0058] The utility model also provides a dyeing machine which comprises the pH value automatic adjusting device of the dye.

[0059] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A dye pH automatic adjusting device, comprising a dye vat (3), a transition barrel (4) fixed above the dye vat (3), a pH monitoring assembly (5) arranged in the transition barrel (4), a heat exchanger (6) connected with the transition barrel (4), a back liquid main pipe (7) connected with an outlet of a dyeing machine body (1), a discharge pipe (41) arranged at the bottom of the transition barrel (4) and communicated with the inside of the dye vat (3), an acid liquid storage barrel (8) connected with the dye vat (3), and an acid-resistant pump (11) for pumping the acid liquid from the acid liquid storage barrel (8) into the dye vat (3); characterized in that, Also comprising: a liquid return branch pipe (9) connected with the liquid return main pipe (7), and the inner diameter of the liquid return branch pipe (9) is smaller than that of the liquid return main pipe (7), the liquid return branch pipe (9) penetrates through the heat exchanger (6) and is connected with the transition barrel (4); a lye storage barrel (10) connected with the dye vat (3); an alkali-resistant pump (12) for pumping lye from the lye storage barrel (10) to the dye vat (3).

2. The dye pH self-adjusting device according to claim 1, characterized by, The pH value monitoring assembly (5) comprises: a flow cell (51) vertically arranged in the transition barrel (4), and a flow channel (52) is vertically arranged in the flow cell (51); a pH value monitoring electrode (53) vertically inserted into the flow channel (52); a liquid inlet pipe (54) in communication with the flow channel (52), and the liquid inlet pipe (54) is detachably connected with the liquid return branch pipe (9); a liquid outlet pipe (55) in communication with the flow channel (52), and the liquid outlet pipe (55) is higher than the liquid inlet pipe (54).

3. The dye pH self-adjusting device according to claim 1, characterized by, Two temperature sensors (14) are arranged on the liquid return branch pipe (9), and the two temperature sensors (14) are respectively arranged on the two sides of the heat exchanger (6).

4. The dye pH self-adjusting device according to claim 1, characterized by, A stirring assembly (15) is arranged in the dye vat (3).

5. The dye pH self-adjusting device according to claim 1, wherein The lye storage barrel (10) and the acid liquid storage barrel (8) are the same structure, and the lye storage barrel (8) comprises a barrel body (81), a frame body (82) for supporting the barrel body (81), a weight sensor (83) arranged on the frame body (82) and fixedly connected with the outer wall of the barrel body (81), a liquid discharge pipe (84) connected with the bottom of the barrel body (81), and an electric valve (85) arranged on the liquid discharge pipe (84); the liquid discharge pipe (84) is in communication with the dye vat (3).

6. The dye pH self-adjusting device according to claim 5, wherein An observation window (86) is arranged on the lower side of the barrel body (81).

7. The dye pH self-adjusting device according to claim 1, wherein Also comprising: a first circulating pump (16) with its input end and output end connected with the liquid return main pipe (7), and the first circulating pump (16) is located upstream of the liquid return branch pipe (9) and the liquid return main pipe (7).

8. The dye pH self-adjusting device according to claim 2, wherein The liquid inlet pipe (54) and the liquid return branch pipe (9) are connected through a flange plate (17).

9. A dyeing machine, characterized in that The pH value automatic adjusting device of the dye comprises the dye of any one of claims 1-8.

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