CN218429323U

CN218429323U - Special inner screw rod of double-screw reactor for producing TPU (thermoplastic polyurethane)

Info

Publication number: CN218429323U
Application number: CN202222500096.0U
Authority: CN
Inventors: 王战平; 王德岗; 宋挺挺; 席敏杰
Original assignee: Luoyang Haihui New Material Co ltd
Current assignee: Luoyang Haihui New Material Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-02-03
Anticipated expiration: 2032-09-21

Abstract

The application discloses a special inner screw for a double-screw reactor for producing TPU (thermoplastic polyurethane), which comprises a connecting end, an inner screw body and an adjusting structure; a clamping groove is formed in the inner end of the connecting end, a clamping head is fixedly connected to one end of the inner screw rod body, and the clamping head is clamped in the clamping groove; the clamping head and the inner screw rod body are both provided with through holes, the other end of the inner screw rod body is provided with an end groove, the inner wall of the clamping groove is fixedly connected with a connecting pipe, the connecting pipe penetrates through the through holes and is connected to the inner part of the end groove, and the tail end of the connecting pipe is in threaded connection with a first nut. This application has adopted the integrated configuration of link and interior screw rod body, through twisting the distance between the adjustable link of the second nut on screw thread post surface and the interior screw rod body, further adjusts the engaged position between two interior screw rod bodies, has solved the problem of twin-screw dislocation among the conventional art.

Description

Special inner screw rod of double-screw reactor for producing TPU (thermoplastic polyurethane)

Technical Field

The application relates to the technical field of production of novel special resin materials, in particular to a special inner screw for a double-screw reactor for producing TPU.

Background

The TPU is named as thermoplastic polyurethane elastomer rubber, has wide hardness range, wear resistance, oil resistance, transparency and good elasticity, and is widely applied to the fields of daily necessities, sports goods, toys, decorative materials and the like. The current production methods of TPU mainly comprise a double-screw method and a conveyor belt method; the twin-screw method comprises the following steps of metering and mixing the raw materials, and pouring into a twin-screw reactor: under the conditions of high temperature (140-250 ℃) and extrusion pressure of 4-7 MPa), continuously granulating underwater, and curing to obtain a finished product; the conveying belt method comprises the steps of measuring and mixing raw materials, pouring the raw materials onto a conveying belt with a heating system, curing the raw materials through a drying tunnel, crushing the cured raw materials, and granulating the cured raw materials to obtain a finished product; the two methods can form flow operation and carry out continuous polymerization, are suitable for mass production, and generally adopt a double-screw method for mass production at present.

In the prior art, a novel special resin material is generally produced by a double-screw method, after the double-screw reactor is used for a long time, two inner screw rods which are mutually meshed are easy to dislocate, so that the production effect of the double-screw reactor is influenced, and the conventional inner screw rods are of an integrated structure and are not beneficial to adjusting the positions of the inner screw rods. Therefore, the special inner screw for producing the double-screw reactor for the TPU is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough among the background art, the utility model discloses a special interior screw rod of double screw reactor for production TPU has adopted the integrated configuration of link and interior screw rod body, through twisting the distance between the adjustable link of second nut on screw thread post surface and the interior screw rod body, further adjusts the meshing position between two interior screw rod bodies, has solved the problem of double screw dislocation in the conventional art.

In order to realize the purpose, the utility model adopts the following technical scheme:

a special inner screw for a double-screw reactor for producing TPU comprises a connecting end, an inner screw body and an adjusting structure; a clamping groove is formed in the inner end of the connecting end, a clamping head is fixedly connected to one end of the inner screw rod body, and the clamping head is clamped in the clamping groove; through holes are formed in the chuck and the inner screw rod body, an end groove is formed in the other end of the inner screw rod body, a connecting pipe is fixedly connected to the inner wall of the clamping groove, the connecting pipe penetrates through the through holes and is connected to the inner part of the end groove, and a first nut is connected to the tail end of the connecting pipe in a threaded mode; the adjusting structure comprises a mounting groove and a threaded column, a movable cavity is arranged on the inner side of the mounting groove, a movable plate is arranged in the movable cavity, one end of the threaded column is fixedly connected with one end of the inner screw rod body, and the other end of the threaded column penetrates through the movable cavity and is fixedly connected with the movable plate; the mounting groove is internally provided with a second nut, and the second nut is in threaded connection with the threaded column.

The special inner screw for producing the double-screw reactor for TPU is characterized in that the inner part of the inner screw body is of a hollow structure, and the surface of the inner screw body is provided with external threads.

The special inner screw rod for producing the double-screw reactor for TPU is characterized in that the cross sections of the clamping head and the clamping groove are regular hexagonal structures, the clamping head is matched with the clamping groove in size, and the through hole penetrates through the clamping head and the inner screw rod body.

The special inner screw for producing the double-screw reactor for TPU is characterized in that the inside of the connecting pipe is of a hollow structure, the surface of the tail end of the connecting pipe is provided with an external thread, and a water outlet is formed at the tail end of the connecting pipe.

The special inner screw rod for producing the double-screw reactor for TPU is characterized in that a water inlet is formed in the outer end face of the connecting end and is communicated with the inside of the connecting pipe, and the water inlet is communicated with the water outlet.

The special inner screw for producing the double-screw reactor for TPU is characterized in that the number of the mounting grooves is three, the three mounting grooves are annularly distributed on the inner end face of the connecting end, and threaded columns are arranged in the mounting grooves.

The special inner screw rod for producing the double-screw reactor for TPU is characterized in that the cross section of the movable plate and the cross section of the movable cavity are both of a circular structure, the movable plate is connected with the movable cavity in a sliding manner, and the threaded column is positioned on the outer side of the clamping head.

The special inner screw rod for producing the double-screw reactor for TPU is characterized in that the end groove and the through hole are both of circular structures, the diameter size of the end groove is larger than that of the through hole, and the first nut is clamped at the tail end of the through hole.

The special inner screw rod for the double-screw reactor for producing the TPU is characterized in that the number of the thread columns is three, and the three thread columns are annularly distributed between the connecting end and the inner screw rod body.

The special inner screw for producing the double-screw reactor for TPU is characterized in that a spring is arranged in the movable cavity and sleeved on the surface of the threaded column.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

the special inner screw rod of the double-screw reactor for producing the TPU adopts a combined structure of the connecting end and the inner screw rod body, the distance between the connecting end and the inner screw rod body can be adjusted by screwing the second nut on the surface of the threaded column, the meshing position between the two inner screw rod bodies is further adjusted, and the problem of double-screw dislocation in the traditional technology is solved; the utility model has the characteristics of rational in infrastructure, durable, excellent in use effect, market is used extensively.

Drawings

Fig. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

FIG. 3 is a connection diagram of the connection pipe and the connection end of the present invention;

fig. 4 is a cross-sectional view of the end face of the connection end of the present invention.

In the figure: 1. a connecting end; 2. an inner screw body; 3. an end slot; 4. a connecting pipe; 5. a water inlet; 6. a card slot; 7. clamping a head; 8. mounting grooves; 9. a through hole; 10. a first nut; 11. a movable plate; 12. a movable cavity; 13. a spring; 14. a second nut; 15. a threaded post.

Detailed Description

The present invention will be explained in more detail by the following examples, which are not intended to limit the invention, and the purpose of disclosing the invention is to protect all the changes and improvements that come within the scope of the invention;

the special inner screw for producing the double-screw reactor for TPU described in the attached figures 1 to 4 comprises a connecting end 1, an inner screw body 2 and an adjusting structure; a clamping groove 6 is formed in the inner end of the connecting end 1, a clamping head 7 is fixedly connected to one end of the inner screw rod body 2, and the clamping head 7 is clamped inside the clamping groove 6; the clamping head 7 and the inner part of the inner screw rod body 2 are both provided with through holes 9, the other end of the inner screw rod body 2 is provided with an end groove 3, the inner wall of the clamping groove 6 is fixedly connected with a connecting pipe 4, the connecting pipe 4 penetrates through the through holes 9 and is connected to the inner part of the end groove 3, and the tail end of the connecting pipe 4 is in threaded connection with a first nut 10; the adjusting structure comprises a mounting groove 8 and a threaded column 15, a movable cavity 12 is arranged on the inner side of the mounting groove 8, a movable plate 11 is arranged inside the movable cavity 12, one end of the threaded column 15 is fixedly connected with one end of the inner screw body 2, and the other end of the threaded column 15 penetrates through the inner part of the movable cavity 12 and is fixedly connected with the movable plate 11; a second nut 14 is arranged inside the mounting groove 8, and the second nut 14 is in threaded connection with the threaded column 15. The interior of the inner screw body 2 is of a hollow structure, and external threads are arranged on the surface of the inner screw body 2; the cross sections of the clamping head 7 and the clamping groove 6 are regular hexagonal structures, the clamping head 7 is matched with the clamping groove 6 in size, and the through hole 9 penetrates through the clamping head 7 and the inner screw body 2; the interior of the connecting pipe 4 is of a hollow structure, the surface of the tail end of the connecting pipe 4 is provided with external threads, and a water outlet is formed at the tail end of the connecting pipe 4; a water inlet 5 is formed in the outer end face of the connecting end 1, the water inlet 5 is communicated with the inside of the connecting pipe 4, and the water inlet 5 is communicated with a water outlet; the number of the mounting grooves 8 is three, the three mounting grooves 8 are annularly distributed on the inner end face of the connecting end 1, and threaded columns 15 are arranged in the mounting grooves 8; the cross sections of the movable plate 11 and the movable cavity 12 are both circular structures, the movable plate 11 is slidably connected with the movable cavity 12, and the threaded column 15 is located on the outer side of the chuck 7; the end groove 3 and the through hole 9 are both circular structures, the diameter size of the end groove 3 is larger than that of the through hole 9, and the first nut 10 is clamped at the tail end of the through hole 9; the number of the threaded columns 15 is three, and the three threaded columns 15 are annularly distributed between the connecting end 1 and the inner screw body 2; a spring 13 is arranged in the movable cavity 12, and the spring 13 is sleeved on the surface of the threaded column 15.

The special inner screw for producing the double-screw reactor for the TPU of the utility model is implemented by firstly respectively installing two inner screw bodies 2 in the double-screw reactor, and then connecting the connecting end 1 with a driving part of the double-screw reactor; then, the second nut 14 on the surface of the threaded column 15 is screwed, so that the distance between the connecting end 1 and the inner screw bodies 2 can be adjusted, and the meshing position between the two inner screw bodies 2 is further adjusted; then, the first nut 10 in the end groove 3 is screwed, and the first nut 10 is screwed with the external thread on the outer end surface of the connecting pipe 4, so that the connecting pipe 4 can be tensioned, and the connecting end 1 and the inner screw body 2 are fixed; and finally, conveying all groups of TPU stock solution to a pouring head through the accurate metering of a metering pump according to the formula requirement, uniformly and primarily mixing the TPU stock solution under high-speed stirring, conveying the TPU stock solution to the interior of a double-screw reaction extruder to further uniformly mix the TPU stock solution and the extruder for chemical reaction, and then carrying out grain cutting and screening.

The application has the advantages that:

1. the combined structure of the connecting end and the inner screw body is adopted, the distance between the connecting end and the inner screw body can be adjusted by screwing the second nut on the surface of the threaded column, the meshing position between the two inner screw bodies is further adjusted, and the problem of twin-screw dislocation in the prior art is solved;

2. this application is through screwing up the first nut of end inslot portion, and first nut can spiral shell with the external screw thread on connecting pipe outer end surface to can be taut with the connecting pipe, with this to fix link and interior screw rod body, the dismouting is simple, and is comparatively simple during the regulation.

The part of the utility model not detailed is prior art.

Claims

1. A special inner screw rod of a double-screw reactor for producing TPU is characterized in that: comprises a connecting end (1), an inner screw rod body (2) and an adjusting structure; a clamping groove (6) is formed in the inner end of the connecting end (1), a clamping head (7) is fixedly connected to one end of the inner screw rod body (2), and the clamping head (7) is clamped inside the clamping groove (6); through holes (9) are formed in the chuck (7) and the inner screw rod body (2), an end groove (3) is formed in the other end of the inner screw rod body (2), a connecting pipe (4) is fixedly connected to the inner wall of the clamping groove (6), the connecting pipe (4) penetrates through the through holes (9) and is connected to the inner portion of the end groove (3), and a first nut (10) is connected to the tail end of the connecting pipe (4) in a threaded mode; the adjusting structure comprises a mounting groove (8) and a threaded column (15), a movable cavity (12) is arranged on the inner side of the mounting groove (8), a movable plate (11) is arranged inside the movable cavity (12), one end of the threaded column (15) is fixedly connected with one end of the inner screw rod body (2), and the other end of the threaded column (15) penetrates through the inside of the movable cavity (12) and is fixedly connected with the movable plate (11); a second nut (14) is arranged inside the mounting groove (8), and the second nut (14) is in threaded connection with the threaded column (15).

2. The special inner screw of the twin-screw reactor for producing TPU of claim 1, wherein: the interior of the inner screw body (2) is of a hollow structure, and the surface of the inner screw body (2) is provided with external threads.

3. The special inner screw of the twin-screw reactor for producing TPU of claim 1, wherein: the cross section of dop (7) with draw-in groove (6) is regular hexagon structure, dop (7) with the size phase-match of draw-in groove (6), just through-hole (9) run through dop (7) with interior screw body (2).

4. The special inner screw of the twin-screw reactor for producing TPU as set forth in claim 1, wherein: the connecting pipe (4) is internally of a hollow structure, the surface of the tail end of the connecting pipe (4) is provided with an external thread, and a water outlet is formed at the tail end of the connecting pipe (4).

5. The special inner screw of the twin-screw reactor for producing TPU as set forth in claim 4, wherein: the outer end face of the connecting end (1) is provided with a water inlet (5), the water inlet (5) is communicated with the inside of the connecting pipe (4), and the water inlet (5) is communicated with the water outlet.

6. The special inner screw of the twin-screw reactor for producing TPU as set forth in claim 1, wherein: the number of the mounting grooves (8) is three, the mounting grooves (8) are annularly distributed on the inner end face of the connecting end (1), and threaded columns (15) are arranged inside the mounting grooves (8).

7. The special inner screw of the twin-screw reactor for producing TPU as set forth in claim 1, wherein: the cross section of the movable plate (11) and the movable cavity (12) is of a circular structure, the movable plate (11) is connected with the movable cavity (12) in a sliding mode, and the threaded column (15) is located on the outer side of the clamping head (7).

8. The special inner screw of the twin-screw reactor for producing TPU of claim 1, wherein: the end groove (3) and the through hole (9) are both of a circular structure, the diameter size of the end groove (3) is larger than that of the through hole (9), and the first nut (10) is clamped at the tail end of the through hole (9).

9. The special inner screw of the twin-screw reactor for producing TPU as set forth in claim 1, wherein: the number of the threaded columns (15) is three, and the three threaded columns (15) are annularly distributed between the connecting end (1) and the inner screw body (2).

10. The special inner screw of the twin-screw reactor for producing TPU of claim 1, wherein: a spring (13) is arranged inside the movable cavity (12), and the spring (13) is sleeved on the surface of the threaded column (15).