Isomeric vc acid mother liquor screw conveying filter device

Abstract

The utility model relates to the technical field of mother liquor conveying filtration, especially a kind of hetero VC acid mother liquor screw conveying filtration device, it recovers hetero liquid in the screw conveying, filtration and solid-liquid separation process of hetero VC acid mother liquor, reduces hetero VC acid mother liquor loss, and practicality is good;Including feed pipe and spiral blade one;Still include outer tube, spiral blade two, filter hole one, mounting bracket and drive mechanism, outer tube is installed on mounting bracket, feed pipe is rotatably installed in the inside of outer tube, the lower end of feed pipe projects below outer tube, the upper end of feed pipe projects above outer tube, spiral blade two is installed on the outer wall of feed pipe, spiral blade two is located in the inside of outer tube, spiral blade two and spiral blade one are contrary in rotation direction, multiple filter hole one is set on the outer wall of feed pipe, multiple filter hole one is located in the inside of outer tube, drive mechanism is installed on mounting bracket, and drive mechanism drives spiral blade one and feed pipe reverse rotation.

Description

Technical Field

[0001] This utility model relates to the technical field of mother liquor conveying and filtration, and in particular to a spiral conveying and filtration device for iso-VC acid mother liquor. Background Technology

[0002] Iso-VC acid mother liquor is typically transported using a screw conveyor, and filtration and purification are performed during the transport process to separate large particles of impurities. Chinese utility model patent CN212703025U discloses a screw conveyor with a filtration device. This device includes a main body with an outlet at one end and an inlet at the top. An internal conveying chamber is located within the main body, and a motor is installed at one end of the chamber, with its output connected to a screw rod. A filter frame is located above the conveying chamber inside the main body, containing a filter screen. A water pump is located above the filter frame and connected to a water pipe. Three sets of nozzles are located at the bottom of the water pipe. A second motor is located on the outside of the main body. By using a water pump and nozzles, residual material adhering to the inner wall of the conveying chamber after prolonged use can be cleaned by connecting an external water source and pumping water through the pipes to the nozzles, thus increasing the equipment's lifespan and reducing operating costs.

[0003] However, the above-mentioned conveying and filtering device separates the conveying and filtering processes. When the conveyed material is iso-VC acid mother liquor, the iso-VC acid mother liquor will fall into the collection box through the conveyor belt with filtering function, resulting in the loss of iso-VC acid mother liquor. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a spiral conveying and filtering device for iso-VC acid mother liquor that recovers the iso-VC acid liquid during the spiral conveying, filtration and solid-liquid separation process, reduces the loss of iso-VC acid mother liquor, and has good practicality.

[0005] This utility model discloses a spiral conveying and filtering device for isocyanate mother liquor, comprising a conveying pipe and a spiral blade 1, the spiral blade 1 being rotatably installed inside the conveying pipe; it also includes an outer pipe, a spiral blade 2, filter holes 1, a mounting frame, and a drive mechanism. The outer pipe is mounted on the mounting frame, with a discharge port 1 at its upper end. The conveying pipe is rotatably installed inside the outer pipe, with its lower end extending below the outer pipe and its upper end extending above the outer pipe, and a discharge port 2 at its upper end. The spiral blade 2 is installed on the outer wall of the conveying pipe, located inside the outer pipe, and rotates in the opposite direction to the spiral blade 1. Multiple filter holes 1 are provided on the outer wall of the conveying pipe, located inside the outer pipe. The drive mechanism is mounted on the mounting frame and drives the spiral blade 1 and the conveying pipe to rotate in opposite directions. During operation, the lower end of the conveying pipe extends into the isocyanate mother liquor, and the drive mechanism drives the conveying pipe and the spiral blade 1 to rotate in reverse. The spiral blades rotate inside the conveying pipe, lifting and conveying the isocyanate mother liquor upwards. As the isocyanate mother liquor passes through multiple filter holes, the pitch of the spiral blades gradually decreases, causing the liquid to be gradually squeezed out during the upward conveying process. This allows the mother liquor and its small particles to enter the space between the conveying pipe and the outer pipe through the multiple filter holes. As the conveying pipe and the spiral blades rotate in the outer pipe, the isocyanate mother liquor filtered through the multiple filter holes is conveyed upwards along the space between the conveying pipe and the outer pipe. The filtered isocyanate mother liquor is discharged through the outlet of the outer pipe, while the residue with most of the liquid squeezed out is conveyed along the conveying pipe and discharged through the outlet. This process achieves spiral conveying, filtration, and solid-liquid separation of the isocyanate mother liquor, while recovering as much isocyanate mother liquor liquid as possible and reducing isocyanate mother liquor loss, making it highly practical.

[0006] Preferably, the drive mechanism includes a motor, bevel gear one, bevel gear two, and bevel gear three. The motor is mounted on a mounting frame, and the output shaft of the motor is connected to the spiral blade one for transmission. Bevel gear one is concentrically mounted on the output shaft of the motor, bevel gear two is concentrically mounted on the conveying pipe, and bevel gear three is rotatably mounted on the mounting frame. Bevel gear three meshes with bevel gear one and bevel gear two. The motor drives the spiral blade one to rotate while simultaneously driving the bevel gear one to rotate. Bevel gear one meshes with bevel gear three to rotate, and bevel gear three meshes with bevel gear two to rotate. The conveying pipe drives the spiral blade one to rotate, thereby causing the conveying pipe and the spiral blade one to rotate in opposite directions, resulting in a good driving effect.

[0007] Preferably, it also includes a hopper and a guide pipe. The hopper is installed on the mounting frame and is sleeved on the upper outer wall of the conveying pipe. The guide pipe is installed on the second outlet of the conveying pipe and the output end of the guide pipe extends into the hopper. The slag conveyed in the conveying pipe is discharged into the hopper through the second outlet and the guide pipe, and is discharged into the recycling system through the hopper.

[0008] Preferably, it also includes multiple scrapers, which are installed on the upper outer wall of the conveying pipe and extend into the hopper; the multiple scrapers rotate with the conveying pipe, so that the multiple scrapers scrape and brush the slag in the hopper to discharge, thereby improving the discharge efficiency.

[0009] Preferably, it also includes a filter plate, which is installed inside the outer pipe and located above the second spiral blade; the diameter of the second filter hole of the filter plate is smaller than the diameter of the first filter hole, so that the filter plate performs secondary filtration of the iso-VC acid mother liquor transported between the feed pipe and the outer pipe, thereby improving the filtration and separation effect.

[0010] Preferably, it also includes a slide table and a push cylinder. The mounting frame is slidably mounted on the slide table, the fixed end of the push cylinder is mounted on the slide table, and the piston rod of the push cylinder is connected to the mounting frame. The extension or retraction of the piston rod of the push cylinder drives the mounting frame to move up and down along the slide table, thereby adjusting the height of the conveying pipe and the depth of the conveying pipe into the iso-VC acid mother liquor, and improving the conveying effect.

[0011] Preferably, it also includes a crossbeam, a slide rail, a lead screw, and a second motor. The slide rail is horizontally mounted on the crossbeam, the slide table is slidably mounted on the slide rail, the lead screw is horizontally rotatably mounted on the crossbeam, and the lead screw and the slide table are connected by a lead screw nut. The second motor is mounted on the crossbeam, and the output shaft of the second motor is connected to the lead screw. The second motor drives the lead screw to rotate, and the lead screw drives the slide table to move horizontally along the slide rail through the lead screw nut, thereby adjusting the position of the conveying pipe and improving the conveying effect.

[0012] Compared with the prior art, the advantages of this utility model are: it can realize the spiral conveying, filtration and solid-liquid separation of iso-VC acid mother liquor, and recover as much iso-VC acid mother liquor liquid as possible, reduce the loss of iso-VC acid mother liquor, and has good practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side sectional view of the present invention; Figure 3 This is a front sectional view of the present invention; Figure 4 This is a schematic diagram of the isometric structure of this utility model; Figure 5 This is a structural schematic diagram of the present invention in its disassembled state; Figure 6 It is a structural diagram of the slide table, push cylinder, cross frame, slide rail, lead screw and motor.

[0014] The following are labels in the attached diagram: 1. Feed pipe; 2. Spiral blade one; 3. Outer pipe; 4. Spiral blade two; 5. Filter hole one; 6. Mounting frame; 7. Motor; 8. Bevel gear one; 9. Bevel gear two; 10. Bevel gear three; 11. Hopper; 12. Guide pipe; 13. Scraper; 14. Filter plate; 15. Slide table; 16. Push cylinder; 17. Cross frame; 18. Slide rail; 19. Lead screw; 20. Motor two. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0016] like Figures 1 to 5 As shown, a spiral conveying and filtering device for isocyanate mother liquor includes a conveying pipe 1 and spiral blades 2, with the spiral blades 2 rotatably mounted inside the conveying pipe 1. It also includes an outer pipe 3, spiral blades 4, filter holes 5, a mounting frame 6, and a drive mechanism. The outer pipe 3 is mounted on the mounting frame 6, with a discharge port 1 at its upper end. The conveying pipe 1 is rotatably mounted inside the outer pipe 3, with its lower end extending below the outer pipe 3 and its upper end extending above it. A discharge port 2 is located at the upper end of the conveying pipe 1. Spiral blades 4 are mounted on the outer wall of the conveying pipe 1, located inside the outer pipe 3, and rotate in the opposite direction to spiral blades 2. Multiple filter holes 5 are provided on the outer wall of the conveying pipe 1, located inside the outer pipe 3. The drive mechanism is mounted on the mounting frame 6. The drive mechanism includes a motor 7, a bevel gear 8, a bevel gear 9, and a bevel gear 10. The motor 7 is mounted on a mounting frame 6, and the output shaft of the motor 7 is connected to the helical blade 2. The output shaft of the motor 7 is concentrically mounted with bevel gear 8, bevel gear 9 is concentrically mounted on the conveying pipe 1, and bevel gear 10 is rotatably mounted on the mounting frame 6. Bevel gear 10 meshes with bevel gear 8 and bevel gear 9. The mechanism also includes a hopper 11 and a guide pipe 12. The hopper 11 is mounted on the mounting frame 6 and is sleeved on the upper outer wall of the conveying pipe 1. The guide pipe 12 is mounted on the second outlet of the conveying pipe 1, and the output end of the guide pipe 12 extends into the hopper 11. The mechanism also includes a filter plate 14, which is installed inside the outer pipe 3 and is located above the helical blade 4.

[0017] During operation, the lower end of the conveying pipe 1 extends into the iso-VC acid mother liquor. The motor 7 drives the spiral blade 2 to rotate, simultaneously rotating the bevel gear 8. The bevel gear 8 meshes with the bevel gear 10, which in turn meshes with the bevel gear 9. The conveying pipe 1 drives the spiral blade 2 to rotate, causing the conveying pipe 1 and the spiral blade 2 to rotate in opposite directions. This allows the spiral blade 2 to rotate inside the conveying pipe 1, thus lifting and conveying the iso-VC acid mother liquor upwards through the conveying pipe 1. As the iso-VC acid mother liquor passes through multiple filter holes 5, the pitch of the spiral blade 2 gradually decreases, causing the liquid to be gradually squeezed out during the upward conveying process in the conveying pipe 1. This allows the mother liquor and its small particles to enter the space between the conveying pipe 1 and the outer pipe 3 through the multiple filter holes 5. Because the conveying pipe 1 and the spiral blade 4 rotate within the outer pipe 3, the iso-VC acid mother liquor... The iso-VC acid mother liquor filtered through multiple filter holes 5 is conveyed upwards along the space between the conveying pipe 1 and the outer pipe 3. The diameter of the filter hole 2 of the filter plate 14 is smaller than the diameter of the filter hole 5, so that the filter plate 14 performs secondary filtration on the iso-VC acid mother liquor conveyed between the conveying pipe 1 and the outer pipe 3. The filtered iso-VC acid mother liquor is discharged through the outlet 1 of the outer pipe 3, while the residue with most of the liquid is squeezed out is conveyed along the conveying pipe 1 and discharged into the hopper 11 through the guide pipe 12 on the outlet 2. Multiple scrapers 13 rotate with the conveying pipe 1, so that the multiple scrapers 13 scrape and brush the residue in the hopper 11 and discharge the residue through the recycling system discharged from the hopper 11. The iso-VC acid mother liquor is conveyed, filtered and separated into solid and liquid, and as much iso-VC acid mother liquor liquid is recovered as possible, reducing the loss of iso-VC acid mother liquor. It has good practicality. Example 2

[0018] like Figure 1 , Figure 3 and Figure 6 As shown, based on Embodiment 1, it also includes a slide table 15 and a push cylinder 16. The mounting bracket 6 is slidably mounted on the slide table 15. The fixed end of the push cylinder 16 is mounted on the slide table 15, and the piston rod of the push cylinder 16 is connected to the mounting bracket 6. It also includes a cross frame 17, a slide rail 18, a lead screw 19, and a second motor 20. The slide rail 18 is horizontally mounted on the cross frame 17. The slide table 15 is slidably mounted on the slide rail 18. The lead screw 19 is horizontally rotatably mounted on the cross frame 17. The lead screw 19 and the slide table 15 are connected by a lead screw nut. The second motor 20 is mounted on the cross frame 17, and the output shaft of the second motor 20 is connected by a drive to the lead screw 19.

[0019] The piston rod of the push cylinder 16 extends or shortens, driving the mounting bracket 6 to rise and fall along the slide table 15, thereby adjusting the height of the conveying pipe 1 and the depth of the conveying pipe 1 into the iso-VC acid mother liquor. The motor 20 drives the lead screw 19 to rotate, and the lead screw 19 drives the slide table 15 to move horizontally along the slide rail 18 through the lead screw nut, thereby adjusting the position of the conveying pipe 1 and improving the conveying effect.

[0020] like Figures 1 to 6 As shown, this utility model discloses a spiral conveying and filtering device for iso-VC acid mother liquor. During operation, motor 20 first drives screw 19 to rotate. Screw 19, through screw nut, drives slide 15 to move horizontally along slide rail 18, thereby adjusting the position of conveying pipe 1. Push cylinder 16 drives mounting bracket 6 to rise and fall along slide 15, adjusting the depth of conveying pipe 1 into the iso-VC acid mother liquor. Then, the drive mechanism drives conveying pipe 1 and spiral blade 2 to rotate in reverse, causing spiral blade 2 to rotate inside conveying pipe 1, thus lifting and conveying the iso-VC acid mother liquor upwards through conveying pipe 1. Then, as the iso-VC acid mother liquor passes through multiple filter holes 5, the pitch of spiral blade 2 is gradually adjusted. The flow gradually decreases, causing the iso-VC acid mother liquor being transported in the conveying pipe 1 to be gradually squeezed out during the upward transport process. This allows the mother liquor and its small particles to enter the space between the conveying pipe 1 and the outer pipe 3 through multiple filter holes 5. As the conveying pipe 1 and the spiral blades 4 rotate in the outer pipe 3, the iso-VC acid mother liquor filtered through the multiple filter holes 5 is transported upward along the space between the conveying pipe 1 and the outer pipe 3. Finally, the filter plate 14 performs secondary filtration on the iso-VC acid mother liquor transported between the conveying pipe 1 and the outer pipe 3. The filtered iso-VC acid mother liquor is discharged through the outlet 1 of the outer pipe 3, while the residue from which most of the liquid has been squeezed out is transported along the conveying pipe 1 and discharged through the outlet 2.

[0021] The main functions achieved by this utility model are: 1. It can realize the spiral conveying, filtration and solid-liquid separation of iso-VC acid mother liquor, and recover as much iso-VC acid mother liquor liquid as possible and reduce the loss of iso-VC acid mother liquor, which is practical. 2. Improve the filtration and separation effect by performing secondary filtration on the isoVC acid mother liquor; 3. The height and position of the conveying pipe 1 can be adjusted, providing high flexibility.

[0022] The spiral conveying and filtering device for iso-VC acid mother liquor of this utility model has common mechanical installation, connection and setting methods. As long as it can achieve its beneficial effect, it can be implemented. The conveying pipe 1, spiral blade 1, outer pipe 3, spiral blade 2, motor 7, bevel gear 1, bevel gear 2, bevel gear 3, hopper 11, scraper 13, filter plate 14, slide table 15, push cylinder 16, cross frame 17, slide rail 18, lead screw 19, and motor 20 of the spiral conveying and filtering device for iso-VC acid mother liquor of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0023] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A spiral conveying and filtering device for isocyanate mother liquor, comprising a conveying pipe (1) and a spiral blade (2), wherein the spiral blade (2) is rotatably installed inside the conveying pipe (1); characterized in that, It also includes an outer tube (3), a second spiral blade (4), a first filter hole (5), a mounting bracket (6), and a drive mechanism. The outer tube (3) is mounted on the mounting bracket (6). The upper end of the outer tube (3) is provided with a discharge port. The conveying pipe (1) is rotatably mounted inside the outer tube (3). The lower end of the conveying pipe (1) extends below the outer tube (3). The upper end of the conveying pipe (1) extends above the outer tube (3). The upper end of the conveying pipe (1) is provided with a second discharge hole. The second spiral blade (4) is mounted on the outer wall of the conveying pipe (1). The second spiral blade (4) is located inside the outer tube (3). The second spiral blade (4) rotates in the opposite direction to the first spiral blade (2). Multiple first filter holes (5) are provided on the outer wall of the conveying pipe (1). Multiple first filter holes (5) are located inside the outer tube (3). The drive mechanism is mounted on the mounting bracket (6). The drive mechanism drives the first spiral blade (2) and the conveying pipe (1) to rotate in opposite directions.

2. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 1, characterized in that, The drive mechanism includes a motor (7), bevel gear one (8), bevel gear two (9) and bevel gear three (10). The motor (7) is mounted on the mounting bracket (6). The output shaft of the motor (7) is connected to the helical blade one (2) for transmission. The output shaft of the motor (7) is concentrically mounted with bevel gear one (8). Bevel gear two (9) is concentrically mounted on the conveying pipe (1). Bevel gear three (10) is rotatably mounted on the mounting bracket (6). Bevel gear three (10) meshes with bevel gear one (8) and bevel gear two (9).

3. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 1, characterized in that, It also includes a hopper (11) and a guide pipe (12). The hopper (11) is installed on the mounting frame (6) and is sleeved on the upper outer wall of the conveying pipe (1). The guide pipe (12) is installed on the second outlet of the conveying pipe (1) and the output end of the guide pipe (12) extends into the hopper (11).

4. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 3, characterized in that, It also includes multiple scrapers (13), which are installed on the upper outer wall of the conveying pipe (1) and extend into the hopper (11).

5. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 1, characterized in that, It also includes a filter plate (14), which is installed inside the outer tube (3) and is located above the spiral blade (4).

6. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 1, characterized in that, It also includes a slide (15) and a push cylinder (16). The mounting bracket (6) is slidably mounted on the slide (15), the fixed end of the push cylinder (16) is mounted on the slide (15), and the piston rod of the push cylinder (16) is connected to the mounting bracket (6).

7. The iso-VC acid mother liquor spiral conveying and filtering device as described in claim 6, characterized in that, It also includes a cross frame (17), a slide rail (18), a lead screw (19) and a second motor (20). The slide rail (18) is horizontally mounted on the cross frame (17), the slide table (15) is slidably mounted on the slide rail (18), the lead screw (19) is horizontally rotatably mounted on the cross frame (17), and the lead screw (19) and the slide table (15) are connected by a lead screw nut. The second motor (20) is mounted on the cross frame (17), and the output shaft of the second motor (20) is connected by a drive to the lead screw (19).

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