Cotton and chemical fiber pure spinning blended yarn desizing equipment and process thereof

Abstract

The invention discloses cotton and chemical fiber pure spinning blended yarn desizing equipment and a process thereof.The cotton and chemical fiber pure spinning blended yarn desizing equipment comprises a tank, a turnover bearing plate is arranged on the tank, the upper portion of the bearing plate is used for containing desizing liquid, a lifting device is arranged on the tank and used for driving the bearing plate to move up and down in the tank, and a filtering device is arranged on the bearing plate; wherein the bearing plate is turned over to guide the desizing liquid below the bearing plate. The invention provides cotton and chemical fiber pure spinning blended yarn desizing equipment and a process thereof, which can automatically filter out a pH value solution in wastewater, identify the pH value and the volume of filtrate, further match a solution with corresponding volume and concentration, and guide the solution and enzyme bacteria into the filtrate, so that the working requirement of desizing liquid is met, wastewater discharge is reduced, and the desizing efficiency is improved. Meanwhile, pH value neutralization raw material loss is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of desizing wastewater treatment, in particular to desizing equipment and a process for cotton and chemical fiber pure-spun blended yarns. Background Art

[0002] Usually, desizing operations are performed by a desizing machine. For example, the desizing machine described in publication number CN115262128B includes a water tank and a padder. After the fabric is soaked in the water tank, it is rolled dry by the padder and then output to the next process. The current desizing method is generally enzyme desizing with low water consumption.

[0003] The optimal working pH value for enzyme desizing of different types of fabrics is different, generally between 5-9, acidic or alkaline. At the same time, the wastewater contains a large amount of organic matter such as starch, PVA, etc., as well as residual enzymes, so a large number of wastewater treatment processes are required before it can be discharged.

[0004] In the process of treating enzyme desizing wastewater, a large area is required and a large amount of energy is consumed. Therefore, a device and process that can use a smaller area for desizing water treatment is needed. Summary of the invention

[0005] The present invention aims at the deficiencies in the prior art and provides a desizing device and process for cotton and chemical fiber pure spinning and blending yarns. The desizing wastewater is filtered to remove organic matter and particulate matter, the pH value solution in the desizing wastewater is recovered, and the filtrate is re-proportioned to be used for desizing again.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions: cotton and chemical fiber pure blended yarn desizing equipment, including a tank, a reversible carrying plate is arranged on the tank, the top of the carrying plate is used to place desizing liquid, the tank is equipped with a lifting device, the lifting device is used to drive the carrying plate to move up and down in the tank, the carrying plate is provided with a filtering device, wherein the carrying plate is flipped to introduce the desizing liquid to the bottom of the carrying plate, the carrying plate descends, the desizing liquid is filtered through the filtering device to filter organic matter below the carrying plate, and the solution is filtered to the top of the carrying plate, the tank is provided with a detection device for identifying the pH value and volume of the filtrate, and the tank is also provided with a mixing device, the mixing device adds enzyme bacteria and a pH supplement solution to the filtrate according to the pH value and volume of the filtrate, so as to make the added filtrate meet the requirements of pH value, enzyme bacteria concentration and filtrate volume.

[0007] Its beneficial effect is that the pH solution in the wastewater can be automatically filtered out in the tank, and the solution of corresponding volume and concentration is proportioned according to the identified pH and volume of the filtrate, and the solution and enzyme bacteria are introduced into the filtrate to make it meet the working requirements of the desizing liquid, reduce wastewater discharge, and at the same time reduce the loss of pH neutralization raw materials and reduce production costs.

[0008] In the above scheme, preferably, a plurality of slots are arranged on the supporting plate, and a filtering device is arranged in each slot, wherein the filtering device comprises an MBR membrane layer arranged on the upper and lower ports of the slot for filtering, a mesh layer arranged on the inner wall of the slot and located between two layers of MBR membrane layers for supporting the mesh layer, and a sealing plate which is laterally slidably arranged on the mesh layer and used to seal the slot.

[0009] The beneficial effect is that MBR membrane layers are arranged above and below the slots, so that both sides of the carrier plate can be used for filtration.

[0010] In the above scheme, preferably, sliding grooves are opened on the front and rear end surfaces of the trough pool, and a sliding member is provided on the sliding groove for guiding sliding, and the sliding member is connected to the lifting device, which drives the sliding member to move up and down, and a rotating shaft is provided on both ends of the supporting plate, and a rotating member is provided in the sliding member, and the rotating member can drive the rotating member to rotate, thereby rotating the supporting plate.

[0011] In the above scheme, preferably, a locking pin is arranged in the sliding member, a locking hole is opened on the rotating shaft, and the axis of the locking hole is parallel to the supporting plate. The locking pin is electrically controlled to extend and retract. After the supporting plate rotates 180 degrees, the locking pin extends out and is inserted into the locking hole to lock the supporting plate.

[0012] In the above scheme, preferably, a first sealing plate and a second sealing plate are respectively provided on the upper and lower end surfaces of the sliding member, and both move up and down with the sliding member. The first sealing plate is used to seal the hole of the sliding groove above the supporting plate, and the height of the first sealing plate is higher than the liquid level of the initial desizing liquid. The second sealing plate is used to seal the hole of the sliding groove below the supporting plate.

[0013] In the above scheme, preferably, a cleaning device is slidably arranged at the bottom of the trough, and the cleaning device includes a cleaning frame guided and slidably arranged at the bottom of the trough. When the supporting plate moves downward and presses on the cleaning frame, the cleaning frame can move along the axial direction of the rotating shaft to scrape the bottom surface of the supporting plate.

[0014] In the above scheme, preferably, a water injection pipe is provided on the bottom of the tank, and a hydraulic pump is provided on the water injection pipe. When the supporting plate is pressed against the cleaning frame, a closed chamber is formed between the rear end face of the cleaning frame and the side wall of the tank. The hydraulic pump injects liquid into the closed chamber, pushing the cleaning frame to move toward the other side wall of the tank, thereby compressing the material between the supporting plate and the bottom of the tank.

[0015] In the above scheme, preferably, a water filter trough is opened in the horizontal direction of the cleaning frame, the rear end face of the water filter trough is connected with the upper port of the tank through a pipeline, an MBR membrane layer is arranged on the front end face of the water filter trough, and a mesh layer for support is arranged behind the MBR membrane layer. The cleaning frame simultaneously performs filter pressing operation on the material in front during the movement to remove moisture in the compressed material.

[0016] Wastewater recycling process using cotton and chemical fiber pure blended yarn desizing equipment: S1: The supporting plate is slowly rotated 180 degrees, so that the desizing liquid originally located above the supporting plate falls to the bottom of the tank, that is, between the bottom of the tank and the supporting plate.

[0017] S2: The central control unit controls the sealing plate in the bearing plate to open, and at the same time the lifting device drives the bearing plate to move downward. During the downward movement, the pH solution passes through the two layers of MBR membrane and enters above the sealing plate.

[0018] S3: The detection device identifies the volume and pH value of the solution, and the mixing device adds enzymes and bacteria and supplements acidic or alkaline solution to the filtrate above the supporting plate.

[0019] S4: The lifting device drives the carrying plate to move upward to the initial position.

[0020] In the above scheme, preferably, in S2, a cleaning step is added to scrape the carrier plate so that the carrier plate can be used repeatedly, and in S4, the carrier plate vibrates upward to evenly mix the desizing liquid with a new ratio.

[0021] The beneficial effects of the present invention are as follows: the present invention provides cotton and chemical fiber pure spinning blended yarn desizing equipment and a process thereof, which can automatically filter out the pH value solution in the wastewater, identify the pH and volume of the filtrate, and then proportion solutions of corresponding volumes and concentrations, introduce the solutions and enzymes into the filtrate to make it meet the working requirements of the desizing solution, reduce wastewater discharge, and at the same time reduce the loss of pH value and raw materials, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the present invention.

[0023] Figure 2 It is a top view of the present invention.

[0024] Figure 3 It is a cross-sectional view of the cleaning device of the present invention.

[0025] Figure 4 It is a transverse cross-sectional view of the present invention.

[0026] Figure 5 It is a schematic diagram of the internal bearing plate of the present invention.

[0027] Figure 6 It is a schematic diagram of the cooperation between the carrying plate and the sliding member of the present invention.

[0028] Figure 7 For the present invention Figure 4 A partial enlarged view is shown at C in the middle.

[0029] Figure 8 For the present invention Figure 4 A in the middle shows a local enlarged view.

[0030] Fig. 9 For the present invention Figure 4 A partial enlarged view is shown at B in the middle. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Embodiment 1:

[0032] See also Figure 1-Figure 7 , cotton and chemical fiber pure blended yarn desizing equipment, including a tank 1, a carrying plate 2, a lifting device 3 and a mixing device 4, sliding grooves 11 for the carrying plate 2 to move up and down are opened on both sides of the tank 1, and a sliding member 12 is provided in the sliding groove 11 for guiding sliding. The sliding member 12 is provided with a first blocking plate 122 and a second blocking plate 123, and the first blocking plate 122 and the second blocking plate 123 are vertical plate-shaped for covering the sliding groove 11, and the carrying plate 2 is rotatably arranged on the sliding member 12.

[0033] The sliding member 12 is guided and slidably arranged in the sliding groove 11. When the sliding member 12 is at the highest point, the first sealing plate 122 completely blocks the sliding groove 11 above the supporting plate 2, so that the tank 1 above the supporting plate 2 has only an opening above the tank 1, and the height of the upper end of the first sealing plate 122 is higher than the liquid level of the desizing liquid, and the second sealing plate 123 extends to the lower bottom surface of the tank 1, thereby forming a sealed cavity in the space below the supporting plate 2.

[0034] The sliding member 12 is provided with a rotating member 13 for driving the carrier plate 2 to rotate. The rotating member 13 is a two-station separator equipped with a rotating motor or a large torque reduction motor. The left and right ends of the carrier plate 2 are provided with rotating shafts 23, which rotate with the rotating member 13 through the rotating shafts 23. The rotating member 13 is used to rotate the carrier plate 2 180 degrees each time, that is, flip. The peripheral wall of the carrier plate 2 is wrapped with an elastic sealing layer, which is used for the carrier plate 2 to elastically press against the peripheral wall of the tank 1 after flipping, so that the carrier plate 2 can seal and separate the tank 1. When the supporting plate 2 is in a horizontal state, the tank 1 is divided into upper and lower parts. The desizing liquid at the upper end will not enter the sealed cavity below the supporting plate 2 under the separation of the supporting plate 2. A locking hole 231 is opened on the rotating shaft 23. An electrically controlled locking pin 121 is arranged in the sliding member 12. The extension and retraction of the locking pin 121 can be controlled by the central control unit. The lifting device 3 is arranged on the outer end surfaces at the left and right ends of the tank 1, and its telescopic rod is connected to the sliding block 12. The lifting device 3 is extended and retracted to control the sliding block 12 to move up and down.

[0035] In the initial state, the lifting device 3 is in a retracted state, that is, the supporting plate 2 is located in the middle position of the tank 1, dividing the tank 1 into two upper and lower cavities, and the cavity above the supporting plate 2 is provided with an enzyme desizing liquid for desizing cotton and chemical fiber pure blended yarns. The pH value of the desizing liquid is acidic or alkaline. After the desizing liquid above the supporting plate 2 has been used for a period of time, part of the desizing liquid is taken away by the cotton and chemical fiber pure blended yarns, and the overall volume of the desizing liquid decreases. At the same time, the organic matter in the desizing liquid increases, namely starch, PVA, etc., thereby reducing the working efficiency of the desizing liquid. At this time, it is necessary to replace the desizing liquid.

[0036] At this time, the locking pin 121 retracts, allowing the rotating shaft 23 to rotate. After the rotating member 13 drives the carrying plate 2 to rotate 180 degrees, the locking pin 121 extends to lock the carrying plate 2 again. During the rotation process, the desizing liquid originally located above the carrying plate 2 pours downward into the lower cavity. After the carrying plate 2 rotates 180 degrees, the lower part of the carrying plate 2 is in a sealed state again, and the supporting plate 2 that originally served as the bottom surface of the desizing liquid faces downward.

[0037] A plurality of slots 22 are evenly provided on the support plate 2, and a filter device 21 is provided in each slot 22, wherein the filter device comprises an MBR membrane layer 211, a mesh layer 212 and a blocking plate 213, and a single-layer MBR membrane layer 211 is provided on the upper and lower end surfaces of the slot 22, and the mesh layer 212 is fixedly provided on the peripheral wall of the slot 22, and the upper and lower layers of the MBR membrane layer 211 are laid on the upper and lower end surfaces of the mesh layer 212, and the mesh layer 212 is provided with dense mesh holes for allowing the solution to pass through, and a sliding cavity is provided in a horizontal connection between the support plate 2 and the mesh layer 212, and a blocking plate 213 is slidably provided in the sliding cavity, and the blocking plate 213 has an electric push rod to control its movement in the sliding cavity.

[0038] When the blocking plate 213 is not in the slot 22, the upper and lower parts of the mesh layer 212 are in a connected state, so that the fluids above and below the support plate 2 can communicate with each other after passing through the MBR membrane layer 211. When the blocking plate 213 is located in the mesh layer 212, the upper and lower parts of the mesh layer 212 are blocked, so that the upper and lower parts of the support plate 2 are no longer connected with each other.

[0039] In the initial state, the blocking plate 213 is located in the mesh layer 212, blocking the upper and lower connections of the mesh layer 212, so that the upper and lower parts of the supporting plate 2 cannot communicate with each other, and the desizing liquid is located above the supporting plate 2 under the obstruction of the supporting plate 2. After the supporting plate 2 rotates 180 degrees, the blocking plate 213 is in an open state, the MBR membrane layer 211 can allow air and solution to pass through, and particulate matter and organic matter cannot pass through the MBR membrane layer 211, so that the supporting plate 2 can perform filtering operations.

[0040] The filtering process is as follows: the lifting device drives the supporting plate 2 to move downward. During the descent, the air above the desizing liquid directly flows out to the top of the supporting plate 2 through the MBR membrane layer 211. After the supporting plate 2 presses on the desizing liquid below, the supporting plate 2 continues to move downward under the action of the lifting device 3. The desizing liquid begins to perform a filter press operation under the action of pressure. The solution passes through the MBR membrane layer 211 and enters the top of the supporting plate 2, while the solid particles and organic matter are left under the supporting plate 2. During the entire descent, the filtration operation of the desizing liquid is completed, so that the pH solution flows back to the top of the supporting plate 2 after filtration. At this time, the enzymes and organic matter in the desizing liquid are located below the supporting plate 2.

[0041] Its working principle or usage is as follows: When it is necessary to replace the desizing liquid, the locking pin 121 is retracted, and after the rotating member 13 drives the carrying plate 2 to rotate 180 degrees, the locking pin 121 is extended to lock the carrying plate 2 again. During the rotation process, the desizing liquid originally located above the carrying plate 2 pours downward into the lower cavity. After the carrying plate 2 rotates 180 degrees, the lower part of the carrying plate 2 is in a sealed state again, and the supporting plate 2 that originally served as the bottom surface of the desizing liquid faces downward.

[0042] After the supporting plate 2 rotates 180 degrees, the blocking plate 213 is in an open state, and the lifting device drives the supporting plate 2 to move downward. During the descent, the air above the desizing liquid directly flows out to the top of the supporting plate 2 through the MBR membrane layer 211. After the supporting plate 2 presses on the desizing liquid below, the supporting plate 2 continues to move downward under the action of the lifting device 3. The desizing liquid begins to perform a filter press operation under the action of pressure. The solution passes through the MBR membrane layer 211 and enters the top of the supporting plate 2, while the solid particles and organic matter are left under the supporting plate 2. During the entire descent, the filtration operation of the desizing liquid is completed, so that the solution with a pH value flows back to the top of the supporting plate 2 after filtration. At this time, the enzymes and organic matter in the desizing liquid are both located below the supporting plate 2.

[0043] The pH value of the filtrate after filtration is retained. By adding a solution of corresponding volume and pH value to the filtrate and adding new enzyme bacteria, a new desizing solution can be prepared. First, the discharge of the solution is reduced, the pressure of water treatment is reduced, and the solution is reused to reduce the consumption of pH neutralizing materials, thereby reducing production costs.

[0044] Embodiment 2:

[0045] This embodiment makes the following further improvements on the basis of embodiment 1: Figure 1-Figure 9The bottom of the tank 1 is provided with a cleaning device 5 for sliding guidance. The cleaning device 5 includes a guide member 52 and a cleaning frame 51. The guide member 52 is arranged at the angles on both sides of the bottom of the tank 1 and is parallel to the rotating shaft 23. The guide member 52 is provided with an upper inclined surface 521. The upper inclined surface 521 is used for automatically dropping materials downward, and the materials will not accumulate on the guide member 51. The cleaning frame 51 is slidingly arranged on the guide member 51, and the cleaning frame 51 is slidingly arranged on the bottom surface of the tank 1. A water filter trough 511 is opened on the cleaning frame 51, and an MBR membrane layer 211 is arranged on the port of the water filter trough 511, and a mesh layer 212 for supporting the MBR membrane layer 211 is arranged below the MBR membrane layer 211. One end of a pipeline is connected to the rear end surface of the water filter trough 511, and the other end of the pipeline is connected to the top of the tank 1. The solution filtered by the water filter trough 511 can flow back to the top of the supporting plate 2.

[0046] When the carrying plate 2 moves downward and presses against the cleaning frame 51 , the lifting device 3 stops extending, and the blocking plate 213 in the carrying plate 2 blocks the slot 22 , so that the upper and lower planes of the carrying plate 2 can no longer communicate with each other.

[0047] A water injection pipe 14 is provided on the side wall at one end of the bottom of the tank 1 and is located behind the cleaning frame 51. A hydraulic pump is provided on the water injection pipe 14. When the supporting plate 2 is pressed against the cleaning frame 51, the space behind the cleaning frame 51 forms a closed space. At this time, the hydraulic pump 141 starts to work and injects high-pressure water into the space behind the cleaning frame 51, thereby moving the cleaning frame 51 forward. The upper and lower end walls of the cleaning frame 51 scrape the lower end surface of the supporting plate 2 and the bottom surface of the tank 1. At the same time, in the process of moving forward, the filtrate in front of the cleaning frame 51 is filtered again, so that the volume of the filtrate is reduced again, and the filtered solution also enters the top of the supporting plate 2.

[0048] A material drop chute 15 is provided on the bottom surface of the trough 1 below the side wall at the other end, and a switch plate 151 is provided on the material drop chute 15. A flow sensor is provided in the pipe connected to the rear end of the filter trough 511. When the flow value detected by the flow sensor is less than the set value during the continuous movement of the cleaning frame 51, that is, the moisture content in the filtrate drops to the set value, the switch plate 151 is controlled to open, and the cleaning frame 51 continues to move forward to complete the scraping of the end surface below the supporting plate 2 and the bottom surface of the trough 1, and the filtrate is squeezed and discharged downward from the material drop chute 15.

[0049] After the hydraulic pump pumps a set amount of water into the tank, it stops rotating. At this time, the cleaning frame 51 has just completed cleaning the lower end surface of the supporting plate 2. At this time, the hydraulic pump rotates in the opposite direction to extract the liquid behind the cleaning frame 51, thereby resetting the cleaning frame 51.

[0050] Its working principle or usage is as follows: When the carrier plate 2 moves downward and presses against the cleaning frame 51, the lifting device 3 stops extending, and the blocking plate 213 in the carrier plate 2 blocks the slot 22, so that the upper and lower planes of the carrier plate 2 can no longer communicate with each other. At this time, the hydraulic pump starts to work, injecting high-pressure water into the space behind the cleaning frame 51, thereby moving the cleaning frame 51 forward. The upper and lower end walls of the cleaning frame 51 scrape the lower end surface of the supporting plate 2 and the bottom surface of the tank 1. At the same time, in the process of moving forward, the filtrate in front of the cleaning frame 51 is filtered again, so that the volume of the filtrate is reduced again, and the filtered solution also enters the top of the supporting plate 2.

[0051] A material drop chute 15 is provided on the bottom surface of the trough 1 below the side wall at the other end, and a switch plate is provided on the material drop chute 15. A flow sensor is provided in the pipe connected to the rear end of the filter trough 511. When the flow value detected by the flow sensor is less than the set value during the continuous movement of the cleaning frame 51, that is, the moisture content in the filtrate drops to the set value, the switch plate is controlled to open, and the cleaning frame 51 continues to move forward to complete the scraping of the end surface below the supporting plate 2 and the bottom surface of the trough 1, and the filtrate is squeezed and discharged downward from the material drop chute 15.

[0052] The liquid level height detector is used to detect the liquid level of the filtrate above the supporting plate 2 when the supporting plate 2 is pressed against the cleaning frame 51. The pH detector is used to detect the pH value of the filtrate above the supporting plate 2. The pH detector and the liquid level height detector transmit the detected values ​​to the central control unit. The central control unit controls the preparation of a solution of a certain concentration with a volume of T1. The mixing device 4 includes a solution addition port 41 and an enzyme addition port 42. The solution addition port 41 injects the prepared solution of a certain concentration with a volume of T1 into the tank 1, and the enzyme addition port 42 is used to add active enzyme to the tank 1. After the mixing device 4 injects the enzyme and the solution, the pH value of the filtrate, the solution volume and the number of enzyme bacteria are restored to the initial state.

[0053] At this time, the lifting device 3 drives the carrying plate 2 to move upward to the initial position, wherein a vibration device is arranged on the carrying plate 2 during the rising process, so that the desizing liquid is more uniform during the rising process of the carrying plate 2.

[0054] In addition to the vibration device, an ultrasonic device can also be used to obtain a more uniform mixed desizing liquid.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Desizing equipment for cotton and chemical fiber pure blended yarn, characterized by: The tank (1) comprises a tank (1), a reversible carrying plate (2) is arranged on the tank (1), a desizing liquid is placed on the carrying plate (2), and a lifting device (3) is arranged on the tank (1), and the lifting device (3) is used to drive the carrying plate (2) to move up and down in the tank (1); The carrier plate (2) is provided with a filtering device (21), wherein the carrier plate (2) is turned over to introduce the desizing liquid to the bottom of the carrier plate (2), and the carrier plate (2) is lowered, and the desizing liquid is filtered through the filtering device (21) to filter the organic matter below the carrier plate (2), and the solution is filtered to the top of the carrier plate (2); The tank (1) is provided with a detection device for identifying the pH value and volume of the filtrate; The tank (1) is also provided with a mixing device (4), and the mixing device (4) adds enzyme bacteria and a pH supplement solution to the filtrate according to the pH value and volume of the filtrate, so as to make the filtrate after addition meet the requirements of pH value, enzyme bacteria concentration and filtrate volume.

2. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 1, characterized in that: The bearing plate (2) is provided with a plurality of slots (22), each of which is provided with a filtering device (21), the filtering device (21) comprising an MBR membrane layer (211) provided on the upper and lower ports of the slot (22) for filtering, a mesh layer (212) provided on the inner wall of the slot (22) and located between two layers of the MBR membrane layer (211) for supporting the same, and a blocking plate (213) provided on the mesh layer (212) for transverse sliding and for blocking the slot (22).

3. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 1 or 2, characterized in that: The trough (1) is provided with a sliding groove (11) on the front and rear end surfaces, and a sliding member (12) is provided on the sliding groove (11) for guiding sliding. The sliding member (12) is connected to the lifting device (3) and is driven by the lifting device (3) to move the sliding member (12) up and down. Rotating shafts (23) are provided on both ends of the supporting plate (2), and a rotating member (13) is provided on the sliding member (12). The rotating member (13) can drive the rotating shaft (23) to rotate, thereby rotating the supporting plate (2).

4. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 3, characterized in that: A locking pin (121) is arranged in the sliding member (12), a locking hole (231) is provided on the rotating shaft (23), and the axis of the locking hole (231) is parallel to the supporting plate (2). The locking pin (121) is electrically controlled to extend and retract, and after the supporting plate (2) rotates 180 degrees, the locking pin (121) extends out and is inserted into the locking hole (231) to lock the supporting plate (2).

5. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 3, characterized in that: A first blocking plate (122) and a second blocking plate (123) are respectively arranged on the upper and lower end surfaces of the sliding member (12), and the two blocks move up and down with the sliding member (12); the first blocking plate (122) is used to block the hole of the sliding groove (11) located above the bearing plate (2), and the height of the first blocking plate (122) is higher than the liquid level of the initial desizing liquid; the second blocking plate (123) is used to block the hole of the sliding groove (11) located below the bearing plate (2).

6. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 3, characterized in that: A cleaning device (5) is slidably disposed at the bottom of the tank (1), the cleaning device (5) comprising a cleaning frame (51) which is slidably disposed at the bottom of the tank (1). When the support plate (2) moves downward and presses against the cleaning frame (51), the cleaning frame (51) can move along the axis of the rotating shaft (23) to scrape the bottom surface of the support plate (2).

7. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 6, characterized in that: The bottom of the tank (1) is provided with a water injection pipe (14), and a hydraulic pump is provided on the water injection pipe (14). When the support plate (2) is pressed against the cleaning frame (51), a closed chamber is formed between the rear end surface of the cleaning frame (51) and the side wall of the tank (1). The hydraulic pump injects liquid into the closed chamber, pushing the cleaning frame (51) to move toward the other side wall of the tank (1), thereby compressing the material between the support plate (2) and the bottom surface of the tank (1).

8. The desizing equipment for cotton and chemical fiber pure blended yarn according to claim 7, characterized in that: A water filter trough (511) is provided in the transverse direction of the cleaning frame (51), and the rear end surface of the water filter trough (511) is connected to the upper port of the tank (1) through a pipeline. An MBR membrane layer (211) is provided on the front end surface of the water filter trough (511), and a mesh layer (212) for support is provided behind the MBR membrane layer (211). The cleaning frame (51) simultaneously performs a filter pressing operation on the material in front during the movement to remove moisture in the compressed material.

9. A wastewater recycling process using the cotton and chemical fiber pure blended yarn desizing equipment as described in any one of claims 6 to 8, characterized in that: S1: the carrying plate (2) slowly rotates 180 degrees, so that the desizing liquid originally located above the carrying plate (2) falls to the bottom of the tank (1), that is, between the bottom of the tank (1) and the carrying plate (2); S2: The central control unit controls the blocking plate (213) in the support plate (2) to open, and at the same time the lifting device (3) drives the support plate (2) to move downward. During the downward movement, the pH solution passes through the two layers of MBR membrane (211) and enters above the blocking plate (213); S3: The detection device identifies the volume and pH value of the solution, and the mixing device (4) adds enzymes and bacteria and supplements acidic or alkaline solution to the filtrate above the carrier plate (2); S4: The lifting device (3) drives the carrying plate (2) to move upward to the initial position.

10. The wastewater recycling process according to claim 9, characterized in that: In S2, a cleaning step is added to scrape the carrying plate (2) so that the carrying plate (2) can be used repeatedly; In S4, the carrier plate (2) vibrates and rises upward to evenly mix the newly formulated desizing liquid.

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