An apparatus for separating and recovering solvent from printing and dyeing

Abstract

The application discloses a device for separating and recovering solvent from printing and dyeing, which comprises an operation box for condensation, heating boxes and recovery boxes arranged on both sides of the operation box, and the heating boxes and the recovery boxes are communicated with the operation box, two groups of liquid storage cylinders are arranged in the operation box, liquid changing pipes are fixed outside the liquid storage cylinders for liquid changing, and spiral conveying pipes one and two for heat exchange are respectively fixed in the two groups of liquid storage cylinders. Through the function of the through holes in the inner stirring plate, the through holes on the inner stirring plate allow the steam to pass, the steam flows freely on both sides of the inner stirring plate through the through holes, the exchange and mixing of the steam are realized, the steam enters into the spiral conveying pipe two on one side, the steam in different parts contacts the spiral conveying pipe two, the steam is more easily condensed, the outer stirring plate accelerates the movement of the cold source outside the contact unit, the cold source is more easily transferred into the connecting cylinder, and the condensation effect is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing and dyeing recovery, in particular to a device for separating and recovering solvent from printing and dyeing. BACKGROUND

[0002] The printing and dyeing operation process is a complex and delicate system engineering. First, pretreatment is performed. The purpose of pretreatment is to remove various impurities on the fabric under the condition that the base cloth is slightly damaged, so that the fabric becomes a white, soft and good wetting performance dyeing and printing semi-product. Then, dyeing is performed. Dyeing is a process of dyeing fiber materials. It is by means of physical and chemical or chemical combination of dye and fiber, or by chemical method to generate dye on the fiber to make the entire textile become a colored object. In the dyeing process, the dye first diffuses to the surface of the fiber, and then gradually transfers from the solution to the inside of the fiber until the dye concentration of each part of the fiber tends to be consistent. Fixation is the process of dye combination with fiber, which determines the fastness and color of dyeing.

[0003] The separation and recovery of printing and dyeing solvent is an important environmental protection and energy saving link. In patent No. CN202410246590.X, distillation method is used for recovery. Distillation method is to evaporate the solvent into steam by heating, and then condense it into liquid, so as to realize the separation and recovery of the solvent. This method is suitable for recovering solvents with low boiling point. In the distillation process, the heating temperature and condensation conditions need to be strictly controlled to ensure the purity and recovery rate of the solvent. However, in the process of condensing steam into liquid, it needs to contact the cold source to condense. The steam that has not been completely cooled will move outward as gas, which will have an impact on the environment. Therefore, it is necessary to completely condense the steam into liquid and recover the liquid. SUMMARY

[0004] The purpose of the present application is to provide a device for separating and recovering solvent from printing and dyeing to solve the problems in the background art.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a device for separating and recovering solvent from printing and dyeing, comprising an operation box for condensation, heating box and recovery box are respectively arranged on both sides of the operation box, the heating box and the recovery box are communicated with the operation box, two groups of liquid storage cylinders are installed in the operation box, liquid exchange pipes are fixed outside the liquid storage cylinders for liquid exchange, spiral conveying pipes one and two for heat exchange are respectively fixed in the two groups of liquid storage cylinders, the spiral conveying pipes one and two are communicated, and the two are respectively communicated with the recovery box and the heating box.

[0006] Supporting frame is arranged on the spiral conveying pipe two, vertical grid blocking frame is slidably arranged on the supporting frame, the spiral conveying pipe two is divided into two halves by the grid blocking frame, and the contact unit for connecting the two halves of the spiral conveying pipe two is arranged in the grid blocking frame, and the contact unit is used for stirring the steam.

[0007] Further, the spiral conveying pipe one and the spiral conveying pipe two are spirally extended from top to bottom, and the lower ends of the two are connected, so that the steam moves downward through the spiral conveying pipe two and then moves upward through the spiral conveying pipe one, the inside of the spiral conveying pipe one is closed, and a plurality of conveying holes distributed along the spiral are arranged in the inside of the spiral conveying pipe one, for conveying the generated liquid.

[0008] Further, the two halves of the spiral conveying pipe two penetrate the supporting frame, and the supporting frame is used for limiting the two halves of the spiral conveying pipe two, and the supporting frame is a metal sheet.

[0009] Further, a plurality of connecting holes are arranged outside the grid blocking frame, the connecting holes are used for connecting the two halves of the spiral conveying pipe two, and a connecting barrel is further fixed in the inside of the grid blocking frame, the connecting barrel is coaxial with the connecting hole, a slit is arranged in the middle of the connecting barrel to divide the connecting barrel into two halves, the contact unit is arranged in the slit, and the inside and outside of the contact unit are in contact with the connecting barrel and the outside, respectively, when the contact unit rotates, the inside and outside are stirred.

[0010] Further, the contact unit comprises an embedded layer clamped in the slit, an annular frame is integrally arranged outside the embedded layer, the annular frame is arranged outside the connecting barrel, and is used for blocking the slit, a plurality of circumferentially distributed inner stirring plates are fixed on the inner wall of the embedded layer, and the inner stirring plates are used for stirring the steam in the connecting barrel.

[0011] Further, the inner stirring plates are metal sheets, a plurality of through holes are arranged on the outer wall of the inner stirring plates, and the through holes are used for stirring the steam.

[0012] Further, the outer stirring plates are fixed at the two ends of the annular frame, the outer stirring plates are in contact with the connecting barrel, and the outer stirring plates are also metal sheets.

[0013] Further, a gear is fixed at one end of the outer stirring plate on one side, the gear is coaxial with the connecting barrel, a chain is engaged with the outside of the gear, a waterproof motor is arranged outside the grid blocking frame, the output end of the waterproof motor is engaged with the chain, and the waterproof motor is used for driving the chain transmission.

[0014] Further, sealing rings are fixed at the two sides of the embedded layer, and the sealing rings are extruded outside the slit.

[0015] Further, the upper end of the heating box is fixed with an air pump, and the air pump is used for blowing air into the heating box.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. Since the spiral conveying pipe two and the spiral conveying pipe one form a U shape as a whole, the steam will condense and be located at the lowermost end of the spiral conveying pipe two and the spiral conveying pipe one, blocking the conveying orifices, realizing the discharge of the condensed liquid between the spiral conveying pipe two and the spiral conveying pipe one, making the steam contact the cold source for a longer time, and improving the condensation efficiency.

[0018] 2. Under the action of the through holes on the inner stirring plate, the through holes on the inner stirring plate allow the steam to pass through, and the steam passing through the through holes flows freely on both sides of the inner stirring plate, realizing the exchange and mixing of the steam, the steam entering into the spiral conveying pipe two, and the steam in different parts contacting the spiral conveying pipe two, so that the steam is more easily condensed, the outer stirring plate accelerates the movement of the cold source outside the contact unit, and the cold source is more easily transferred into the connecting cylinder, further improving the condensation effect.

[0019] 3. The inner stirring plate and the outer stirring plate on both sides of the contact unit can increase the contact area for heat transfer, further improve the condensation effect, and maximize the avoidance of the outward movement of the steam, thereby avoiding the damage to the environment. DETAILED DESCRIPTION

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 is a schematic diagram of the half-section structure of the operation box of the present application;

[0023] Figure 3 is a schematic diagram of the half-section structure of the liquid storage cylinder of the present application;

[0024] Figure 4 is a schematic diagram of the local structure of the spiral conveying pipe one of the present application;

[0025] Figure 5 is a schematic diagram of the structure of the spiral conveying pipe two of the present application;

[0026] Figure 6 is a schematic diagram of the local structure of the blocking frame of the present application;

[0027] Figure 7 is a schematic diagram of the separation structure of the contact unit and the blocking frame of the present application;

[0028] Figure 8 is a schematic diagram of the structure of the contact unit of the present application;

[0029] Figure 9 is a schematic diagram of the planar structure of the contact unit of the present application.

[0030] In the figure: 1, operation box; 2, heating box; 3, recovery box; 4, liquid storage cylinder; 41, liquid replacement pipe; 5, spiral conveying pipe I; 51, conveying hole; 6, spiral conveying pipe II; 7, support frame; 8, blocking frame; 81, connecting hole; 82, connecting cylinder; 83, slit; 9, contact unit; 91, annular frame; 92, embedded layer; 93, sealing ring; 94, inner stirring plate; 95, through hole; 96, outer stirring plate; 97, gear; 10, chain; 11, waterproof motor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying 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 of ordinary skill in the art without creative work fall within the scope of the present application.

[0032] Please refer to Figures 1-9 The present application provides a technical solution: the distillation method is to evaporate the solvent into steam by heating, and then condense it into liquid, so as to realize the separation and recovery of the solvent. In the process of distillation, the generated steam needs to be condensed. The present application provides a device for separating and recovering solvent from printing and dyeing, which comprises an operation box 1 for condensation, heating boxes 2 and recovery boxes 3 arranged on both sides of the operation box 1, and the heating boxes 2 and the recovery boxes 3 are communicated with the operation box 1. The heating boxes 2 are heated, and then the generated steam enters the operation box 1, and the subsequent condensation is recovered by the recovery boxes 3 to complete the recovery of the solvent. Two groups of liquid storage cylinders 4 are installed in the operation box 1. The liquid storage cylinders 4 are fixed with liquid replacement pipes 41 outside for liquid replacement. The liquid storage cylinders 4 are internally provided with salt water for cooling. The salt water can be used as a cooling medium. The cooling effect of the salt water is usually better than that of pure water, because it can lower the freezing point of water, so that it still remains in a liquid state at a lower temperature. The salt water is replaced through the liquid replacement pipe 41 to ensure that the temperature of the salt water in the liquid storage cylinder 4 is low for condensing the steam. The two groups of liquid storage cylinders 4 are respectively fixed with spiral conveying pipes I 5 and spiral conveying pipes II 6 for heat exchange. The spiral conveying pipes I 5 and the spiral conveying pipes II 6 are communicated, and the two groups are respectively communicated with the recovery boxes 3 and the heating boxes 2. The spiral conveying pipes I 5 and the spiral conveying pipes II 6 are used for conveying and condensing the steam.

[0033] As Figure 5As shown, the spiral conveying pipe two 6 is supported by a support frame 7, and a vertical blocking frame 8 is slidingly installed on the support frame 7, the blocking frame 8 divides the spiral conveying pipe two 6 into two halves, and a contact unit 9 for connecting the two halves of the spiral conveying pipe two 6 is installed in the blocking frame 8, the contact unit 9 is used to stir the steam, the support frame 7 supports the two halves of the spiral conveying pipe two 6, and the contact unit 9 is installed on the blocking frame 8, the contact unit 9 connects the two halves of the spiral conveying pipe two 6, and the contact unit 9 is needed when conveying steam.

[0034] As shown in Figure 3 , the spiral conveying pipe one 5 and the spiral conveying pipe two 6 extend spirally from top to bottom, the spiral shape makes the steam contact the cold source in a larger area, and the residence time in the spiral pipe is increased, which speeds up the condensation, and the lower ends of the two are connected, so that the spiral conveying pipe one 5 and the spiral conveying pipe two 6 are in the shape of U, when the steam passes through, the condensed liquid will accumulate inside the U-shaped, so that the steam moves downward through the spiral conveying pipe two 6, and then moves upward from the spiral conveying pipe one 5, the inside of the spiral conveying pipe one 5 is closed, and a plurality of conveying holes 51 distributed along the spiral are formed in the inside, for conveying the generated liquid, the conveying holes 51 are used to convey the steam, and when the steam condenses, the generated liquid can block the conveying holes 51, and in the case of increased air pressure, the generated liquid is pushed along the conveying holes 51.

[0035] As shown in Figure 5 , in order to erect the spiral conveying pipe two 6, the two halves of the spiral conveying pipe two 6 penetrate the support frame 7, and the support frame 7 is used to limit the two halves of the spiral conveying pipe two 6, the support frame 7 is a thin sheet of metal material, and the sheet shape is used to avoid increasing the range of blocking the spiral conveying pipe two 6, so that the spiral conveying pipe two 6 can be in contact with the brine to the maximum extent.

[0036] As shown in Figure 6 , a plurality of connecting holes 81 are penetrated on the outside of the blocking frame 8, the connecting holes 81 are used to connect the two halves of the spiral conveying pipe two 6, so that the steam can be conveyed through the two halves of the spiral conveying pipe two 6, and a connecting cylinder 82 is also fixed in the inside of the blocking frame 8, the connecting cylinder 82 is coaxial with the connecting holes 81, a slit 83 is formed in the middle of the connecting cylinder 82 to divide the connecting cylinder 82 into two, the slit 83 is used to install the contact unit 9, and the inside and outside of the contact unit 9 are respectively in contact with the connecting cylinder 82 and the outside, when the contact unit 9 rotates, the inside and outside are stirred, so that the steam contacts the contact unit 9 when passing through the connecting cylinder 82.

[0037] As shown in Figure 7 and Figure 8As shown, the inner and outer sides of the contact unit 9 are in contact with the steam and the salt water outside, respectively, and the steam is stirred while the salt water outside is also stirred, the contact unit 9 comprises an embedded layer 92 clamped in the slit 83, and an annular frame 91 is integrally arranged on the outer side of the embedded layer 92, the annular frame 91 is sleeved on the outer side of the connecting cylinder 82 and used for blocking the slit 83, and a plurality of inner stirring plates 94 are fixed on the inner wall of the embedded layer 92 and used for stirring the steam in the connecting cylinder 82.

[0038] The inner stirring plate 94 is a metal sheet, a plurality of through holes 95 are formed in the outer wall of the inner stirring plate 94 and used for stirring the steam, the metal inner stirring plate 94 is stirred, and the through holes 95 are formed on the outer wall of the metal inner stirring plate 94, so that the steam is mixed, that is, the steam at different positions is more easily in contact with the inner wall of the spiral conveying pipe two 6, and rapid condensation is realized.

[0039] As shown in the figure, Figure 8 Both ends of the annular frame 91 are fixed with outer stirring plates 96, the outer stirring plates 96 are in contact with the connecting cylinder 82, the outer stirring plates 96 are also metal sheets, the outer stirring plates 96 stir the salt water outside to make the salt water move, so that the local temperature rise of the salt water does not affect heat exchange, and it should be noted that the inner stirring plate 94 and the outer stirring plate 96 can increase the contact area, and are metal materials, the annular frame 91 and the embedded layer 92 are also metal materials, so that heat is transferred, not only the stirring effect is realized, but also the heat transfer effect is realized.

[0040] As shown in the figure, Figure 8 One end of one side of the outer stirring plate 96 is fixed with a gear 97, the gear 97 coincides with the axis of the connecting cylinder 82, the gear 97 is engaged with a chain 10 outside, a waterproof motor 11 is installed on the outer side of the blocking frame 8, the output end of the waterproof motor 11 is engaged with the chain 10, and the chain 10 is driven under the action of the waterproof motor 11, so that the contact units 9 at different positions are rotated.

[0041] As shown in the figure, Figure 1 In order to avoid steam leakage, the embedded layer 92 is fixed with sealing rings 93 on both sides, and the sealing rings 93 are extruded with the inner wall of the slit 83.

[0042] As shown in the figure, ​ As shown in the figure, the upper end of the heating box 2 is fixed with an air pump, the air pump is used for blowing air into the heating box 2, when the generated steam is difficult to push the liquid in the spiral conveying pipe two 6 and the spiral conveying pipe one 5, the air pump can increase the air pressure to push the generated liquid into the recovery box 3.

[0043] The working principle of the present application is that the printing and dyeing solution is contained in the heating box 2, the heating box 2 can heat the solution, then the condensed liquid is contained in the recovery box 3 through the condensation of the operation box 1, and the recovery of the solvent is completed.

[0044] The steam generated by heating moves to the spiral conveying pipe two 6, and condenses into liquid after contacting the cold source, and is discharged from the spiral conveying pipe one 5 into the recovery box 3. Since the spiral conveying pipe two 6 and the spiral conveying pipe one 5 form a U shape as a whole, the steam moving into the spiral conveying pipe two 6 will condense, and the liquid gradually increases at the lower end of the spiral conveying pipe two 6 and the spiral conveying pipe one 5, which will block the conveying orifice 51 of the spiral conveying pipe one 5, so that the steam cannot move outward. At this time, more steam remains between the spiral conveying pipe two 6 and the spiral conveying pipe one 5, and the steam is in contact with the cold source for a longer time, so that the condensation effect is optimal. In addition, as the steam gradually increases, the condensed liquid is pushed along the conveying orifice 51, so that the liquid is discharged into the recovery box 3. The subsequent condensed liquid is gradually accumulated, so that the condensed liquid is discharged from the interval between the spiral conveying pipe two 6 and the spiral conveying pipe one 5, so that the steam is in contact with the cold source for a longer time, thereby improving the condensation efficiency.

[0045] Secondly, in the working of the waterproof motor 11, the driving chain 10 rotates to rotate the contact unit 9, and the inner stirring plate 94 rotates. Under the action of the through hole 95 on the inner stirring plate 94, the through hole 95 on the inner stirring plate 94 allows the steam to pass through, which is the basis for the steam to flow during the stirring process. The steam flows freely on both sides of the inner stirring plate 94 through the through hole 95, so that the steam is exchanged and mixed, and the steam is stirred to enter the spiral conveying pipe two 6 on one side. Different parts of the steam contact the spiral conveying pipe two 6, so that the steam is more easily condensed.

[0046] The outer stirring plate 96 can also rotate to accelerate the movement of the cold source outside the contact unit 9, so that the cold source is more easily transferred into the connecting cylinder 82, thereby further improving the condensation effect.

[0047] It should be noted that the inner stirring plate 94 and the outer stirring plate 96 on the inner and outer sides of the contact unit 9 can increase the contact area, can be used to transfer heat, can rapidly cool the temperature of the steam, further improves the condensation effect, and maximizes the avoidance of the outward movement of the steam, thereby avoiding the damage to the environment.

[0048] It should be noted that in this document, the terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0049] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for separating and recovering solvent from printing and dyeing, comprising an operation tank (1) for condensation, a heating tank (2) and a recovery tank (3) arranged on two sides of the operation tank (1) respectively, and the heating tank (2) and the recovery tank (3) are communicated with the operation tank (1), characterized in that: The operation box (1) is internally provided with two groups of liquid storage cylinders (4), the outer side of the liquid storage cylinders (4) is fixed with liquid changing pipes (41) for liquid changing, the inner side of the two groups of liquid storage cylinders (4) is respectively fixed with a spiral conveying pipe one (5) and a spiral conveying pipe two (6) for heat exchanging, the spiral conveying pipe one (5) and the spiral conveying pipe two (6) are communicated, and both are communicated with the recovery box (3) and the heating box (2); The spiral conveying pipe two (6) is supported by a support frame (7), a vertical baffle frame (8) is slidably installed on the support frame (7), the baffle frame (8) divides the spiral conveying pipe two (6) into two halves, a contact unit (9) for communicating the two halves of the spiral conveying pipe two (6) is installed in the baffle frame (8), and the contact unit (9) is used for stirring the steam; a plurality of connecting holes (81) are penetrated through the outer side of the baffle frame (8), the connecting holes (81) are used for communicating the two halves of the spiral conveying pipe two (6), and a connecting cylinder (82) is further fixed in the baffle frame (8), the axis of the connecting cylinder (82) coincides with that of the connecting hole (81), a slit (83) is formed in the middle of the connecting cylinder (82) to divide the connecting cylinder (82) into two halves, the contact unit (9) is installed in the slit (83), the inner and outer sides of the contact unit (9) are respectively in contact with the connecting cylinder (82) and the outside, and when the contact unit (9) rotates, the inner and outer sides are stirred; the contact unit (9) comprises an embedded layer (92) clamped in the slit (83), an annular frame (91) is integrally arranged on the outer side of the embedded layer (92), the annular frame (91) is arranged on the outer side of the connecting cylinder (82) and used for blocking the slit (83), a plurality of circumferentially distributed inner stirring plates (94) are fixed on the inner wall of the embedded layer (92) and used for stirring the steam in the connecting cylinder (82); outer stirring plates (96) are fixed at both ends of the annular frame (91) and in contact with the connecting cylinder (82), the outer stirring plates (96) are also metal sheets; one end of the outer stirring plate (96) is fixed with a gear (97), the axis of the gear (97) coincides with that of the connecting cylinder (82), a chain (10) is engaged with the outer side of the gear (97), a waterproof motor (11) is installed on the outer side of the baffle frame (8), the output end of the waterproof motor (11) is engaged with the chain (10) and used for driving the chain (10) to transmit power.

2. The apparatus for recovering solvent from printing and dyeing according to claim 1, characterized in that: The spiral conveying pipe one (5) and the spiral conveying pipe two (6) are spirally extended from top to bottom, the lower ends of the two are communicated, so that the steam moves downward through the spiral conveying pipe two (6) and then moves upward through the spiral conveying pipe one (5), the inner side of the spiral conveying pipe one (5) is closed, and a plurality of conveying holes (51) are formed in the inner side of the spiral conveying pipe one (5) and spirally distributed, which are used for conveying the generated liquid.

3. The apparatus for recovering solvent from printing and dyeing according to claim 1, characterized in that: The two halves of the spiral conveying pipe two (6) penetrate through the support frame (7), and the support frame (7) is used for limiting the two halves of the spiral conveying pipe two (6), and the support frame (7) is a metal sheet.

4. The apparatus for recovering the solvent from the printing and dyeing according to claim 1, characterized in that: The embedding layer (92) is fixed with sealing rings (93) on both sides, and the outer side of the sealing ring (93) is extruded with the inner wall of the slit (83).

5. The apparatus for recovering solvent from printing and dyeing according to claim 1, characterized in that: The inner stirring plate (94) is a metal sheet, and a plurality of through holes (95) are formed on the outer wall of the inner stirring plate (94), which are used for stirring steam.

6. The apparatus for recovering solvent from printing and dyeing according to claim 1, characterized in that: The upper end of the heating box (2) is fixed with an air pump, which is used for blowing air into the heating box (2).

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