Total recovery equipment for spandex waste liquid

Abstract

The utility model discloses full recovery equipment for spandex waste liquid, and relates to the technical field of spandex production equipment. The device comprises a treatment tank, a stirring assembly is installed in the treatment tank and in the center of the tank cover, a cleaning assembly is further installed on the bottom side wall of the tank cover and comprises a circular ring embedded in the bottom side wall of the tank cover, an electric rod is installed on the upper side wall of the circular ring, a scraper plate is installed on the bottom side wall of the circular ring, a pulling-away hole is formed in the tank cover, and a pulling-away assembly is erected on the pulling-away hole; the extraction assembly comprises side frames fixed to the extraction hole, and an extraction pipe is further arranged between the side frames. According to the utility model, stubborn stains on the inner wall of the tank body can be scraped off through the cleaning assembly when the treatment tank is shut down, and a mixed solution in the treatment tank can be sampled through the extraction assembly after the mixing and stirring work is completed, so that whether the solution in the treatment tank is completely treated or not can be judged.

Description

Technical Field

[0001] This utility model belongs to the technical field of spandex production equipment, and in particular relates to a full recovery equipment for spandex waste liquid. Background Technology

[0002] In order to ensure stable production during the production of spandex, equipment needs to be replaced or repaired regularly. During this period, a large amount of waste is generated. The main types of waste are: a large amount of prepolymer waste liquid generated from the replacement of the prepolymer reactor in solution polymerization; a large amount of final polymer waste liquid generated from the repair or replacement of the second reactor; and polymer waste liquid generated from the switching of spinning filters and the discharge of yarn from the components. Recycling and secondary treatment of this waste liquid can yield spandex fibers again, thereby achieving the effects of environmental protection and reducing production costs.

[0003] However, none of the three types of spandex waste liquids mentioned above can be directly used for spinning because their molecular chains have not been stretched. Currently, the main method for treating prepolymer waste liquid is to recover it into a refining tower, and then feed it into a treatment tank for further processing. Dimethylacetamide in the prepolymer waste liquid is recovered by distillation, and the remaining solid prepolymer is discharged as hazardous waste and treated as final polymer waste liquid generated from the secondary reaction. However, the refining process easily generates secondary environmental pollution, resulting in a small quantity of the final target product and the formation of new unusable waste during secondary pollution. This is detrimental to environmental protection and increases the consumption of production resources.

[0004] Existing treatment tanks for spandex wastewater recovery mainly consist of four parts: the tank body, a stirring assembly, a feeding assembly, and a power assembly. The power assembly provides power to the stirring assembly, which agitates the wastewater and treatment liquid entering the tank from the feeding assembly. Because the tank is a closed structure, the lid cannot be opened during treatment. Determining whether the wastewater has been completely treated relies on the usual processing time, leading to significant errors. Furthermore, the cylindrical tank with a lid typically relies on rinsing with water, which cannot guarantee thorough cleaning of the tank's inner walls, leaving some stubborn stains adhering. Therefore, we provide a complete spandex wastewater recovery device to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a complete recycling device for spandex waste liquid. The cleaning component can scrape off stubborn stains on the inner wall of the tank when the treatment tank is shut down. The extraction component can sample the mixed solution in the treatment tank after the mixing and stirring work is completed to determine whether the solution in the treatment tank has been completely treated. This solves the problems of existing treatment tanks for the recycling of spandex waste liquid.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a device for the complete recycling of spandex waste liquid, comprising a treatment tank, an output pipe installed at the bottom of the side wall of the treatment tank, and a tank cover at the top of the treatment tank; an agitation assembly is installed inside the treatment tank and at the center of the tank cover, the agitation assembly includes an agitator rod rotatably connected to the center of the tank cover, and an agitator plate is installed on the side wall of the agitator rod; a power assembly is installed on the upper side wall of the tank cover, the power assembly includes a drive motor fixed to the tank cover and a gear disk sleeved on the shaft end of the drive motor, the gear disk meshing with the toothed groove on the top side wall of the agitator rod; a cleaning assembly is also installed on the bottom side wall of the tank cover, the cleaning assembly includes a ring embedded in the bottom side wall of the tank cover, an electric rod is installed on the upper side wall of the ring, and a scraper plate is installed on the bottom side wall of the ring; an extraction hole is opened on the tank cover, and an extraction assembly is mounted on the extraction hole, the extraction assembly includes a side frame fixed to the extraction hole, and an extraction pipe is also provided between the side frames.

[0008] The present invention is further configured such that a valve is installed on the output pipe, a sealing plug is provided on the extraction hole, and the stirring rod extends through the tank cover into the interior of the processing tank.

[0009] The present invention is further provided that a rod groove is provided on the side wall of the stirring rod, and a round hole is provided in the upper and lower side walls of the rod groove.

[0010] The present invention is further configured such that cylinders are welded to both the upper and lower ends of one side of the stirring plate, and a groove is formed on the outer wall of the other end. Spring rods are installed at equal intervals in the groove, and the inner wall of the groove is connected to the combing plate through the spring rods. The cylinder at the bottom of the stirring plate is inserted into the round hole at the bottom of the rod groove.

[0011] The present invention is further configured such that the cylinder at the top of the stirring plate abuts against the upper inner wall of the rod groove through an abutting member. The abutting member includes an abutting plate, and a top column inserted into a circular hole at the upper end of the rod groove is welded to the upper side wall of the abutting plate. A spring is also provided above the top column and inside the circular hole. A pull plate is also welded to the side wall of the abutting plate.

[0012] The present invention is further configured such that a frame is fixedly installed on the outer end of the drive motor, and the frame is fixed to the upper side wall of the tank cover by bolts, and a toothed groove is provided in the upper side wall of the stirring rod.

[0013] The present invention is further configured such that the circular ring is embedded in the bottom side wall of the can lid, the electric rod is fixed to the can lid by a lifting frame, and the electric rod extends through the can lid into the interior of the processing tank, and the telescopic end of the electric rod is connected to the upper side wall of the circular ring through a connecting sleeve.

[0014] The present invention is further configured such that tube grooves are provided on the outer walls of both sides of the extraction tube, and a sealing plug is provided at the end of the extraction tube. The side frame is mounted on both sides of the extraction hole, and a rotating shaft is rotatably connected inside the side frame. The end of the rotating shaft also passes through the tube groove and is slidably connected to the tube groove.

[0015] This utility model has the following beneficial effects:

[0016] This invention features a cleaning component, including a ring embedded in the bottom side wall of the tank lid. An electric rod is also embedded in the tank lid. A scraper is fixedly installed on the bottom side wall of the ring, with its blade connected to the inner wall of the treatment tank. During use, after the treatment tank has finished processing the spandex waste liquid, and when cleaning is required, the electric rod operates, its shaft extending to detach the ring from the tank lid and continuously move it downwards. As the ring moves downwards, the scraper at its bottom constantly scrapes against the inner wall of the treatment tank, thereby removing stubborn stains from the inner wall.

[0017] This invention features a extraction assembly with an extraction hole on the can lid. The extraction assembly includes side frames mounted on both sides of the extraction hole. The side frames are slidably connected to the side wall of the extraction tube via a rotating shaft. A sealing plug one and a sealing plug two are respectively inserted into the extraction hole and the end of the extraction tube. In use, sealing plug one is pulled out of the extraction hole, then the end of the extraction tube is held and sealing plug two is pulled out. At this point, the end of the extraction tube is pushed and rotated until it is directly above the extraction hole. Then... Apply downward pressure to insert the extraction tube into the extraction hole and continue lowering it until the extraction tube can no longer be lowered. Then, insert the second sealing plug into the outer end of the extraction tube and pull the extraction tube upward. At this point, because one end of the extraction tube is sealed, the mixed waste liquid inside the tube cannot flow out. Then, return the extraction tube to its initial horizontal downward position and slowly pull out the second sealing plug to remove the mixed waste liquid inside the tube. Send it for testing to determine whether the mixed waste liquid in the treatment tank has been completely treated. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the processing tank.

[0020] Figure 2 This is a structural cross-sectional view of the treatment tank.

[0021] Figure 3 This is a structural disassembly diagram of the treatment tank.

[0022] Figure 4 This is a structural disassembly diagram of the stirring assembly and the power assembly.

[0023] Figure 5 This is a structural disassembly diagram of the cleaning component.

[0024] Figure 6 This is a structural disassembly diagram of the extracted component.

[0025] Figure 7 This is a schematic diagram of a device for the complete recycling of spandex waste liquid.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Processing tank, 2-Output pipe, 201-Valve, 3-Tank cover, 301-Extraction hole, 301a-Sealing plug one, 4-Agitator assembly, 401-Agitator rod, 401a-Toothed groove, 401b-Rod groove, 401c-Round hole, 402-Agitator plate, 402a-Cylinder, 402b-Plate groove, 402c-Spring rod, 402d-Comb plate, 403-Abutting part, 403a-Abutting plate, 403b- 403c-Top column, 403d-Spring, 5-Power assembly, 501-Drive motor, 502-Frame, 503-Gear disk, 6-Cleaning assembly, 601-Ring, 601a-Scraper blade, 602-Electric rod, 602a-Lifting frame, 602b-Connecting sleeve, 7-Extraction assembly, 701-Extraction pipe, 701a-Pipe groove, 702-Side frame, 702a-Shaft, 703-Sealing plug II. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0029] Please see Figure 1-4 This utility model is a full recycling device for spandex waste liquid, including a treatment tank 1, a stirring component 4 and a power component 5. The power component 5 can provide power support for the stirring component 4, thereby enabling the stirring component 4 to stir the spandex waste liquid and the treatment liquid entering the treatment tank 1 to make them fully mixed.

[0030] Specifically, an output pipe 2 is installed on the bottom side wall of the processing tank 1, and a valve 201 is installed on the output pipe 2. A tank cover 3 is installed on the top of the processing tank 1, and a stirring assembly 4 is installed at the center of the tank cover 3. A power assembly 5 is provided on the side of the top of the stirring assembly 4. The stirring assembly 4 includes a stirring rod 401 that passes through the tank cover 3 and extends into the processing tank 1. A stirring plate 402 is installed on the outer wall of the stirring rod 401. The power assembly 5 includes a drive motor 501 fixed in the upper side wall of the tank cover 3. The drive motor 501 meshes with the toothed groove 401a at the top of the stirring rod 401 through a gear disk 503.

[0031] Furthermore, the top of the outer wall of the stirring rod 401 is provided with a toothed groove 401a, and the side wall of the stirring rod 401 is provided with a rod groove 401b. Circular holes 401c are provided in the upper and lower side walls of the rod groove 401b. A cylinder 402a is welded to the upper and lower outer walls of one end of the stirring plate 402, and a plate groove 402b is provided on the outer wall of the other end. A spring rod 402c is installed in the plate groove 402b, and the stirring plate 402 is connected to the combing plate 402d through the spring rod 402c. The upper end of the stirring plate 402 is also provided with an abutment 403. The abutment 403 includes a spring 403d placed in the round hole 401c and a top post 403c abutting the lower end of the spring 403d. An abutment plate 403a is welded to the bottom side wall of the top post 403c, and a pull plate 403b is welded to the side wall of the abutment plate 403a. The lower side wall of the abutment plate 403a abuts against the upper side wall of the stirring plate 402, and the upper side wall of the abutment plate 403a abuts against the upper inner wall of the plate groove 402b.

[0032] The operation process of this embodiment is as follows: When in use, open the can lid 3 and input the spandex waste liquid and treatment liquid to be treated into the treatment tank 1, and then close the can lid 3. At this time, the stirring assembly 4 enters the treatment tank 1. Then, start the power assembly 5. The drive motor 501 in the power assembly 5 works and drives the gear disk 503 on its shaft end to rotate. When it rotates, it meshes with the tooth groove 401a at the top of the stirring rod 401, and the stirring rod 401 also rotates. As a result, the four stirring plates 402 on the outer wall of the stirring rod 401 also rotate, which can stir and mix the solution in the treatment tank 1. When the stirring plate 402 rotates, due to the presence of the spring rod 402c, the combing plate 402d can be thrown outward by centrifugal force, so that its end contacts the inner wall of the treatment tank 1. When the stirring plate 402 stops rotating, it is pulled back to the outer wall of the stirring plate 402 due to the presence of the spring rod 402c. Example 2

[0033] Please see Figure 5Based on embodiment 1, a cleaning component 6 is also provided. The cleaning component 6 is suspended and installed inside the side wall of the can lid 3. When the treatment can 1 is not in use, the cleaning component 6 can be attached to the inner wall of the treatment can 1 and moved down to achieve the effect of scraping away stubborn stains on the inner wall of the treatment can 1.

[0034] Specifically, a cleaning component 6 is installed on the bottom side wall of the can lid 3. The cleaning component 6 includes a ring 601 installed on the bottom side wall of the can lid 3, and an electric rod 602 is installed on the upper side wall of the ring 601. A scraper 601a is fixedly installed on the bottom side wall of the ring 601.

[0035] Furthermore, the ring 601 is embedded in the bottom side wall of the can lid 3, and a lifting frame 602a is fixedly installed on the upper side wall of the can lid 3. The electric rod 602 is fixedly installed in the lifting frame 602a. The electric rod 602 extends through the side wall of the can lid 3 and enters the interior of the processing tank 1. The end of the electric rod 602 located inside the processing tank 1 is connected to the ring 601 through the connecting sleeve 602b. The outer edge of the scraper 601a abuts against the inner wall of the processing tank 1.

[0036] The operation process of this embodiment is as follows: When the treatment tank 1 has finished treating the spandex waste liquid, that is, when the treatment tank 1 needs to be cleaned, the electric rod 602 works, and its shaft end extends to drive the ring 601 to detach from the tank cover 3 and continue to move downward. When the ring 601 moves downward, the scraper plate 601a at its bottom also scrapes the inner wall of the treatment tank 1 at all times, thereby scraping away stubborn stains from the inner wall of the treatment tank 1. After the scraping operation is completed, the electric rod 602 retracts, driving the ring 601 on the shaft end to move upward and retract into the bottom side of the tank cover 3. Example 3

[0037] Please see Figure 6 Based on Embodiments 1 and 2, an extraction component 7 is also provided. The extraction component 7 can extract the mixed solution in the processing tank 1 after the stirring work is completed, so as to achieve the effect of analyzing and processing it to check whether the mixture has been completely processed.

[0038] Specifically, the can lid 3 has a extraction hole 301, and a sealing plug 301a is provided in the extraction hole 301. An extraction assembly 7 is also mounted above the extraction hole 301. The extraction assembly 7 includes side frames 702 fixed on both sides of the extraction hole 301, and an extraction tube 701 is installed between the side frames 702.

[0039] Furthermore, tube grooves 701a are provided on the outer walls of both sides of the extraction tube 701, and a sealing plug 703 is provided at the end of the extraction tube 701. A rotating shaft 702a is rotatably connected in the side frame 702, and the other end of the rotating shaft 702a is inserted into the tube groove 701a and slidably connected with the tube groove 701a.

[0040] The operation process of this embodiment is as follows: When in use, pull out the sealing plug 301a from the extraction hole 301, then hold the end of the extraction tube 701 and pull out the sealing plug 703. At this time, push the end of the extraction tube 701 and rotate it until the extraction tube 701 is directly above the extraction hole 301. Then apply downward pressure to insert the extraction tube 701 into the extraction hole 301 and continue to lower it until the extraction tube 701 can no longer be lowered. Then insert the sealing plug 703 into the outer end of the extraction tube 701 and pull the extraction tube 701 upward. At this time, because one end of the extraction tube 701 is sealed, the mixed waste liquid inside the tube cannot flow out of the extraction tube 701. Then restore the extraction tube 701 to the initial horizontal downward state, and slowly pull out the sealing plug 703 to take out the mixed waste liquid inside the tube. Send it for testing to determine whether the mixed waste liquid in the treatment tank 1 has been completely treated. Example 4

[0041] like Figure 7 As shown, based on Examples 1, 2 and 3, a treatment method for the spandex waste liquid corresponding to the completed 8 treatment tanks is also provided.

[0042] Specifically, there are a total of 8 processing tanks, numbered T1 to T8.

[0043] Further, 1. The waste liquid from the solution polymerization reactor and the waste liquid discharged from the start-up waste tank are connected to the waste truck via the pipeline and transported to the prepolymerization waste liquid treatment area. It is then pumped to the prepolymerization primary reactor T1 via the P1 pneumatic pump. The reactor is cooled to 0℃ by introducing refrigerant. After thorough mixing, NCO is sampled and tested. An NCO content of not less than 1.1% is considered normal. An appropriate amount of mixed amine is then added based on calculations, and the reaction is stirred. The reaction is considered complete based on the mixed solution extracted by the extraction component 7. The mixture is then transferred to the T2 storage tank via the P2 gear pump. An appropriate amount of functional additives is added to the T2 storage tank to finally form the polymer stock solution. After thorough mixing in the T2 tank for 24 hours, it is then pumped to the T3 stock solution storage tank via the P3 gear pump for maturation.

[0044] 2. When repairing or replacing the waste liquid generated by the second reactor, strictly separate and store the dimethylacetamide and final polymer waste liquid used for rinsing the reactor in the early stage. After the second reactor is started, discharge the final polymer in the waste liquid tank into the final polymer recovery waste liquid truck, and then transfer it to the waste liquid recovery workshop. It is then transported to the T5 raw liquid storage tank through the P6 gear pump, where it is stirred and matured to ensure that the maturation time is more than 24 hours.

[0045] 3. The polymer raw liquid discharged from the spinning filters and components of each workshop every day is transferred to the recycling workshop via a dedicated polymer waste liquid truck. It is then transported to the T4 raw liquid storage tank by the P11 gear pump. When unloading the polymer waste liquid, the weight of the raw liquid in the waste liquid truck is calculated, and the P4 transfer pump is turned on at a ratio of 3:1 to transfer the raw liquid in the T3 tank to the T4 tank for stirring and mixing, ensuring that the mixing time is not less than 24 hours each time.

[0046] 4. After the mixing time of the stock solution in tank T4 reaches the required level, the viscosity of the stock solution in tanks T4 / T5 is tested and found to be above 3000p. At the same time, gear pumps P5 and P6 are turned on and transferred to tank T6 for mixing at the same frequency. After mixing in tank T6 for about 24 hours, samples are taken for testing. After the viscosity reaches above 4000p, the stock solution is transferred to tank T7 through gear pump P7.

[0047] 5. The raw liquid in tank T7 is continuously fed to spinning tank T8 by gear pump P8, and finally sent to spinning mill for dry spinning by gear pump P9 to obtain qualified products.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A full recovery device for spandex waste liquid, comprising a treatment tank (1), an output pipe (2) is mounted on the side wall bottom of the treatment tank (1), and a tank cover (3) is arranged on the top end cover of the treatment tank (1); characterized in that: A stirring assembly (4) is installed inside the processing tank (1) and at the center of the tank cover (3). The stirring assembly (4) includes a stirring rod (401) rotatably connected to the center of the tank cover (3), and a stirring plate (402) is installed on the side wall of the stirring rod (401). A power assembly (5) is installed on the upper side wall of the tank cover (3). The power assembly (5) includes a drive motor (501) fixed on the tank cover (3) and a gear disk (503) sleeved on the shaft end of the drive motor (501). The gear disk (503) has a toothed groove (401a) on the top side wall of the stirring rod (401). The can lid (3) is engaged with a cleaning component (6) installed on the bottom side wall. The cleaning component (6) includes a ring (601) embedded in the bottom side wall of the can lid (3), and an electric rod (602) is installed on the upper side wall of the ring (601). A scraper plate (601a) is installed on the bottom side wall of the ring (601). The can lid (3) is provided with a extraction hole (301), and an extraction component (7) is mounted on the extraction hole (301). The extraction component (7) includes a side frame (702) fixed on the extraction hole (301), and an extraction tube (701) is provided between the side frames (702).

2. The full recovery apparatus for waste Spandex solution according to claim 1, wherein A valve (201) is installed on the output pipe (2), a sealing plug (301a) is provided on the extraction hole (301), and the stirring rod (401) extends through the tank cover (3) into the interior of the processing tank (1).

3. The full recovery apparatus for waste Spandex solution according to claim 1, wherein The stirring rod (401) has a rod groove (401b) on its side wall, and a round hole (401c) is provided in both the upper and lower side walls of the rod groove (401b).

4. The full recovery apparatus for waste Spandex solution according to claim 3, wherein The stirring plate (402) has cylinders (402a) welded to both the upper and lower ends on one side, and a plate groove (402b) is opened on the outer wall of the other end. Spring rods (402c) are installed at equal intervals in the plate groove (402b), and the inner wall of the plate groove (402b) is connected to the combing plate (402d) through the spring rods (402c). The cylinders (402a) at the bottom of the stirring plate (402) are inserted into the round holes (401c) at the bottom of the rod groove (401b).

5. The full recovery apparatus for waste Spandex solution according to claim 4, wherein The cylinder (402a) at the top of the stirring plate (402) abuts against the upper inner wall of the rod groove (401b) through the abutting member (403). The abutting member (403) includes an abutting plate (403a), and a top column (403c) inserted into the circular hole (401c) at the upper end of the rod groove (401b) is welded to the upper side wall of the abutting plate (403a). A spring (403d) is also provided above the top column (403c) and inside the circular hole (401c). A pull plate (403b) is also welded to the side wall of the abutting plate (403a).

6. The full recovery apparatus for waste Spandex solution according to claim 1, wherein The outer end of the drive motor (501) is fixedly mounted with a frame (502), and the frame (502) is fixed to the upper side wall of the tank cover (3) by bolts. The upper side wall of the stirring rod (401) is provided with a toothed groove (401a).

7. The full recovery apparatus for waste Spandex solution according to claim 1, wherein The ring (601) is embedded in the bottom side wall of the can cover (3). The electric rod (602) is fixed to the can cover (3) by the lifting frame (602a). The electric rod (602) extends through the can cover (3) into the interior of the processing tank (1). The telescopic end of the electric rod (602) is connected to the upper side wall of the ring (601) through the connecting sleeve (602b).

8. The full recovery apparatus for waste Spandex solution according to claim 1, wherein The extraction tube (701) has tube grooves (701a) on both outer walls, and a sealing plug (703) is provided at the end of the extraction tube (701). The side frame (702) is mounted on both sides of the extraction hole (301), and a rotating shaft (702a) is rotatably connected inside the side frame (702). The end of the rotating shaft (702a) also passes into the tube groove (701a) and is slidably connected to the tube groove (701a).

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