CN212839234U - Screw assembly, screw equipment and transmission system - Google Patents

Abstract

The utility model provides a screw rod subassembly, screw rod equipment and transmission system. The screw assembly includes: a screw having a mounting cavity disposed along an axial direction thereof; the liquid passing pipeline is arranged in the mounting cavity in a penetrating mode, and a liquid passing gap is formed between the outer surface of the liquid passing pipeline and the wall of the mounting cavity; the end cover is connected with the screw rod and forms a liquid passing cavity with the first end of the screw rod, the end cover is provided with a first liquid passing part and a second liquid passing part which are independently arranged, the first liquid passing part is communicated with the inner cavity of the liquid passing pipeline, and the second liquid passing part is communicated with the liquid passing cavity and is communicated with the liquid passing gap through the liquid passing cavity; wherein, it predetermines the clearance to have between the one end of crossing the liquid pipeline and the chamber wall of installation cavity of keeping away from first liquid portion, crosses the inner chamber of liquid pipeline through predetermineeing the clearance and crossing liquid clearance intercommunication. The utility model discloses the problem of screw rod easy deformation in long-time rotation in-process among the prior art has been solved effectively.

Description

Screw assembly, screw equipment and transmission system

Technical Field

The utility model relates to a transmission technical field particularly, relates to a screw rod subassembly, screw rod equipment and transmission system.

Background

At present, the traditional screw is generally of a solid structure, so that transmission is realized through the mutual matching of the screw and the nut.

However, in the long-time rotation process of the screw, certain heat is generated due to friction between the screw and the nut, so that the screw is elongated and deformed due to thermal expansion of materials, and if the length of the screw is changed, the transmission precision of the screw is affected, and the operation precision is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a screw rod subassembly, screw rod equipment and transmission system to solve among the prior art screw rod and rotate the problem that the in-process easily takes place to warp for a long time.

In order to achieve the above object, according to an aspect of the present invention, there is provided a screw assembly including: a screw having a mounting cavity disposed along an axial direction thereof; the liquid passing pipeline is arranged in the mounting cavity in a penetrating mode, and a liquid passing gap is formed between the outer surface of the liquid passing pipeline and the wall of the mounting cavity; the end cover is connected with the screw rod and forms a liquid passing cavity with the first end of the screw rod, the end cover is provided with a first liquid passing part and a second liquid passing part which are independently arranged, the first liquid passing part is communicated with the inner cavity of the liquid passing pipeline, and the second liquid passing part is communicated with the liquid passing cavity and is communicated with the liquid passing gap through the liquid passing cavity; wherein, it predetermines the clearance to have between the one end of crossing the liquid pipeline and the chamber wall of installation cavity of keeping away from first liquid portion, crosses the inner chamber of liquid pipeline through predetermineeing the clearance and crossing liquid clearance intercommunication.

Further, the screw assembly further comprises: the supporting seat is provided with a mounting hole, the screw rod can be rotatably arranged in the mounting hole in a penetrating way, and the end cover is connected with the supporting seat; and the sealing structure is arranged between the hole wall of the mounting hole and the outer surface of the screw rod so as to seal the joint of the mounting hole and the screw rod.

Further, the screw assembly further comprises: the pipeline connects, and the one end and the first portion of leading to liquid of pipeline joint are connected, and the other end and the liquid pipeline that cross of pipeline joint are connected.

Further, the end cap includes: a cylindrical body having a first liquid passage portion and a second liquid passage portion; the flanging structure is arranged at one end of the cylindrical body, which faces the supporting seat, and is connected with the supporting seat; when the first liquid passing parts are multiple, the multiple first liquid passing parts are arranged at intervals around the circumferential direction of the cylindrical body; the second liquid passing part is one or more, and when the second liquid passing part is multiple, the multiple second liquid passing parts are arranged at intervals around the circumference of the cylindrical body.

Further, the first liquid passing part is a first channel, and the first channel comprises a first sub-channel and a second sub-channel which are communicated with each other; the first sub-channel extends along the axis direction of the cylindrical body, one end of the pipeline joint extends into the first sub-channel and then is connected with the first sub-channel, and one end of the second sub-channel, which is far away from the first sub-channel, is connected with the liquid supply device through a first pipeline; wherein, a first included angle is formed between the first sub-channel and the second sub-channel.

Further, the second liquid through part is a second channel, and the second channel comprises a third sub-channel and a fourth sub-channel which are communicated with each other; the third sub-channel extends along the axis direction of the cylindrical body and is communicated with the liquid passing cavity, and one end, far away from the third sub-channel, of the fourth sub-channel is connected with the liquid supply device through a second pipeline; and a second included angle is formed between the third sub-channel and the fourth sub-channel.

Further, a passage port of the second sub-passage on the cylindrical body is positioned on the outer peripheral surface of the cylindrical body; and/or the passage opening of the fourth sub-passage on the cylindrical body is positioned on the outer peripheral surface of the cylindrical body.

Further, the screw includes: the screw rod body is provided with a central through hole; the plugging piece is arranged in the central through hole so as to plug one end of the central through hole, which is far away from the end cover; wherein, the pore wall of central through-hole forms the installation cavity with the shutoff piece, and central through-hole sets up with the screw rod body is coaxial.

Furthermore, one end of the central through hole close to the end cover is a flaring; and/or the end of the liquid pipeline facing the plugging piece is a flared end.

According to another aspect of the present invention, there is provided a screw apparatus, comprising a driving device drivingly connected to a second end of a screw assembly to drive rotation of the screw; wherein, the screw rod component is the screw rod component.

According to another aspect of the present invention, a transmission system is provided, which includes a screw rod device, a first pipeline, a second pipeline and a liquid supply device, wherein one end of the first pipeline is connected to a first liquid passing portion of the screw rod device, the other end of the first pipeline is connected to the liquid supply device, one end of the second pipeline is connected to a second liquid passing portion of the screw rod device, and the other end of the second pipeline is connected to the liquid supply device; wherein the screw equipment is the screw equipment.

Use the technical scheme of the utility model, cross the liquid pipeline and wear to establish in the installation cavity of screw rod, cross and form the liquid clearance between the surface of liquid pipeline and the chamber wall of installation cavity. In the operation process of the screw, cooling medium can enter the liquid passing pipeline through the first liquid passing part and flow in the inner cavity of the liquid passing pipeline so as to cool the screw. And then, the cooling medium flowing out of the liquid passing pipeline enters the preset gap, sequentially enters the liquid passing gap and the liquid passing cavity through the preset gap, and finally flows out of the screw assembly through the second liquid passing part. Like this, coolant flows in liquid pipeline and liquid clearance to take away the heat that produces on the screw rod, prevent that the screw rod from taking place the extension deformation because surface temperature is too high, and then solved among the prior art screw rod and easily taken place the problem of deformation at long-time rotation in-process, promoted screw rod set's transmission precision.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of an embodiment of a screw assembly according to the present invention; and

FIG. 2 shows an enlarged schematic view at A of the screw assembly of FIG. 1;

FIG. 3 shows a perspective view of an end cap of the screw assembly of FIG. 1;

FIG. 4 shows a front view of the end cap of FIG. 3;

FIG. 5 shows a cross-sectional view B-B of the end cap of FIG. 4;

FIG. 6 shows a cross-sectional view C-C of the end cap of FIG. 4;

FIG. 7 shows a cross-sectional view of the end cap of FIG. 4 taken along line D-D; and

fig. 8 shows a schematic perspective view of an embodiment of the transmission system according to the present invention.

Wherein the figures include the following reference numerals:

10. a screw; 11. a mounting cavity; 12. a screw body; 13. a blocking member; 20. a liquid flowing pipeline; 21. a liquid passing gap; 22. presetting a gap; 30. an end cap; 31. a first liquid passing part; 311. a first sub-channel; 312. a second sub-channel; 32. a second liquid passage part; 321. a third sub-channel; 322. a fourth sub-channel; 33. a liquid passing cavity; 34. a cylindrical body; 35. a flanging structure; 40. a supporting seat; 50. a sealing structure; 60. a pipe joint; 70. a drive device; 80. a first pipeline; 90. a liquid supply device; 100. a second pipeline.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, 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 application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the screw rod is easy to deform in the long-time rotating process in the prior art, the application provides a screw rod assembly, screw rod equipment and a transmission system.

As shown in fig. 1 to 8, the screw assembly includes a screw 10, a liquid passing pipe 20, and an end cap 30. The screw 10 has a mounting cavity 11 provided along its axial direction. The liquid passing pipe 20 is arranged in the installation cavity 11 in a penetrating way, and a liquid passing gap 21 is formed between the outer surface of the liquid passing pipe 20 and the wall of the installation cavity 11. The end cover 30 is connected with the screw 10 and forms a liquid passing cavity 33 with the first end of the screw 10, the end cover 30 is provided with a first liquid passing part 31 and a second liquid passing part 32 which are independently arranged, the first liquid passing part 31 is communicated with the inner cavity of the liquid passing pipeline 20, and the second liquid passing part 32 is communicated with the liquid passing cavity 33 and is communicated with the liquid passing gap 21 through the liquid passing cavity 33. Wherein, a preset gap 22 is formed between one end of the liquid passing pipe 20 far away from the first liquid passing part 31 and the wall of the mounting cavity 11, and the inner cavity of the liquid passing pipe 20 is communicated with the liquid passing gap 21 through the preset gap 22.

By applying the technical solution of this embodiment, the liquid passing pipe 20 is inserted into the installation cavity 11 of the screw 10, and a liquid passing gap 21 is formed between the outer surface of the liquid passing pipe 20 and the wall of the installation cavity 11. During the operation of the screw 10, the cooling medium can enter the liquid passing pipe 20 through the first liquid passing part 31 and flow in the inner cavity of the liquid passing pipe 20 to cool the screw 10. Then, the cooling medium flowing out from the liquid passing pipe 20 enters the preset gap 22, sequentially enters the liquid passing gap 21 and the liquid passing chamber 33 through the preset gap 22, and finally flows out of the screw assembly through the second liquid passing portion 32. Like this, coolant flows in liquid pipeline 20 and liquid clearance 21 of crossing to take away the heat that produces on the screw rod 10, prevent that the screw rod 10 from taking place the extension deformation because surface temperature is too high, and then solved screw rod 10 among the prior art and easily taken place the problem of warping at long-time rotation in-process, promoted screw rod set's transmission precision.

As shown in fig. 1, the screw assembly further includes a support seat 40 and a sealing structure 50. Wherein, the supporting seat 40 has a mounting hole, the screw rod 10 is rotatably arranged in the mounting hole in a penetrating way, and the end cover 30 is connected with the supporting seat 40. The sealing structure 50 is provided between the wall of the mounting hole and the outer surface of the screw 10 to seal the junction of the mounting hole and the screw 10. Specifically, the bearing sets up in supporting seat 40 to support screw rod 10, ensure that screw rod 10 can rotate, promoted screw rod assembly's operational reliability. Meanwhile, the sealing structure 50 can prevent the cooling medium from entering the supporting seat 40 and affecting the normal rotation of the screw 10, and further improves the operational reliability of the screw assembly.

Specifically, the number of the supporting seats 40 is two, one is supported at the first end of the screw 10, the other is supported at the second end of the screw 10, and the sealing structure 50 is arranged in the supporting seat 40 supporting the first end of the screw 10 to seal the joint between the screw 10 and the supporting seat 40, so as to prevent the cooling medium from entering the supporting seat 40 through the joint between the screw 10 and the supporting seat 40 to affect the normal rotation of the screw 10.

Optionally, the sealing structure 50 is a sealing ring, and the sealing ring is sleeved outside the screw rod 10.

Optionally, the sealing ring is made of rubber or silicone.

As shown in fig. 1, the screw assembly further includes a pipe joint 60. One end of the pipe joint 60 is connected to the first liquid passing part 31, and the other end of the pipe joint 60 is connected to the liquid passing pipe 20. Thus, the first liquid passing part 31 and the liquid passing pipeline 20 are more easily and conveniently assembled and disassembled, and the assembling and disassembling difficulty is reduced.

Specifically, first portion 31 that leads to liquid is the through-hole, and the one end of pipe joint 60 stretches into in the through-hole and is connected with the pore wall of through-hole, and the other end and the liquid pipeline 20 threaded connection of crossing of pipe joint 60 to make the dismouting of crossing liquid pipeline 20 and first portion 31 that leads to liquid easier, simple and convenient, reduced the dismouting degree of difficulty.

As shown in fig. 1, 4 and 5, the end cap 30 includes a cylindrical body 34 and a flange structure 35. The cylindrical body 34 has a first liquid passage portion 31 and a second liquid passage portion 32. The flanging structure 35 is arranged at one end of the cylindrical body 34 facing the supporting seat 40, and the flanging structure 35 is connected with the supporting seat 40. Thus, the end cover 30 is simpler in structure, easy to process and implement, and the processing cost of the end cover 30 is reduced. Meanwhile, the arrangement makes the disassembly and assembly of the end cover 30 and the supporting seat 40 easier and more convenient, and reduces the labor intensity of workers. Wherein, the pipe joint 60 is positioned in the cylindrical body 34, so that the internal structural layout of the screw assembly is more reasonable and compact.

Alternatively, the number of the first liquid passing portions 31 is one or more, and when the number of the first liquid passing portions 31 is plural, the plural first liquid passing portions 31 are provided at intervals around the circumferential direction of the cylindrical body 34. As shown in fig. 4 and 7, the end cap 30 has a simple structure and is easy to process and implement, and the processing difficulty is reduced by using one first liquid passing part 31.

Alternatively, the number of the second liquid-passing portions 32 is one or more, and when the number of the second liquid-passing portions 32 is plural, the plural second liquid-passing portions 32 are provided at intervals around the circumferential direction of the cylindrical body 34. As shown in fig. 4 to 7, there are three second liquid passing portions 32, and the three second liquid passing portions 32 are arranged at intervals around the cylindrical body 34 in the circumferential direction, so that the cooling medium can be smoothly discharged from the second liquid passing portions 32 to the outside of the screw assembly, and the smoothness of the cooling medium in the screw assembly is improved.

The number of the second liquid passing portions 32 is not limited to this. Alternatively, the second liquid passing portion 32 is two, or four, or five, or six, or seven.

As shown in fig. 4 to 6, the first liquid passing part 31 is a first channel including a first sub-channel 311 and a second sub-channel 312 communicating with each other. The first sub-channel 311 extends along the axial direction of the cylindrical body 34, one end of the pipe joint 60 extends into the first sub-channel 311 and then is connected with the first sub-channel 311, and one end of the second sub-channel 312, which is far away from the first sub-channel 311, is connected with the liquid supply device 90 through the first pipeline 80. The first sub-channel 311 and the second sub-channel 312 form a first included angle therebetween. Thus, on one hand, the arrangement makes the connection between the first liquid passing part 31 and the first pipeline 80 easier and simpler, and reduces the connection difficulty; on the other hand, the structure of the first liquid passing part 31 is simpler, the processing is easy, and the processing cost is reduced. Meanwhile, the arrangement makes the cooling medium more easily enter the liquid passing pipeline 20 to cool the screw 10, so as to prevent the screw 10 from being elongated and deformed due to high temperature.

Specifically, the first sub-channel 311 extends along the axial direction of the cylindrical body 34, the first included angle is 90 °, the number of the second sub-channels 312 is three, and the three second sub-channels 312 extend along the radial direction of the cylindrical body 34 and are respectively connected with the three first pipelines 80, so that the plurality of first pipelines 80 can supply liquid simultaneously, and it is ensured that the cooling medium can sufficiently enter the liquid passing pipeline 20 to cool the screw 10.

As shown in fig. 5 and 6, the second liquid passage 32 is a second passage including a third sub-passage 321 and a fourth sub-passage 322 communicating with each other. The third sub-passage 321 extends along the axial direction of the cylindrical body 34 and is communicated with the liquid passing cavity 33, and one end of the fourth sub-passage 322, which is far away from the third sub-passage 321, is connected with the liquid supply device 90 through the second pipeline 100. The third sub-passage 321 and the fourth sub-passage 322 are disposed at a second included angle. Thus, on one hand, the arrangement makes the connection between the second liquid passing part 32 and the second pipeline 100 easier and simpler, and reduces the connection difficulty; on the other hand, the structure of the second liquid passing part 32 is simpler, the processing is easy, and the processing cost is reduced. Meanwhile, the cooling medium is more easily discharged from the screw 10 due to the arrangement, the circulating flow of the cooling medium in the screw 10 is realized, the cooling effect of the cooling medium is further improved, and the screw 10 is prevented from being elongated and deformed due to high temperature.

Specifically, the third sub-passage 321 extends in the axial direction of the cylindrical body 34, and is disposed at a distance from the first sub-passage 311. The second included angle is 90 degrees, the number of the fourth sub-channels 322 is three, and the three fourth sub-channels 322 extend along the radial direction of the cylindrical body 34 and are respectively connected with the three second pipelines 100, so that the plurality of second pipelines 100 can supply liquid simultaneously, the cooling medium can be fully discharged from the screw 10, and the circulating flow of the cooling medium is realized.

As shown in fig. 3, the passage opening of the second sub-passage 312 in the cylindrical body 34 is located on the outer peripheral surface of the cylindrical body 34. The passage opening of the fourth sub-passage 322 in the cylindrical body 34 is located on the outer peripheral surface of the cylindrical body 34. Specifically, the number of the second sub-passages 312 is three, and the three second sub-passages 312 are provided at intervals around the outer peripheral surface of the cylindrical body 34. The number of the fourth sub-passages 322 is three, and the three fourth sub-passages 322 are disposed at intervals around the outer circumferential surface of the cylindrical body 34, so that the layout of the second sub-passages 312 and the fourth sub-passages 322 on the cylindrical body 34 is more reasonable.

As shown in fig. 2, the screw 10 includes a screw body 12 and a closing member 13. Wherein the screw body 12 has a central through hole. A closure piece 13 is arranged in the central through hole to close off the end of the central through hole remote from the end cap 30. Wherein, the pore wall of central through-hole forms installation cavity 11 with shutoff piece 13, and central through-hole sets up with screw rod body 12 is coaxial. Thus, the arrangement makes the processing of the screw 10 easier and simpler, and reduces the processing difficulty.

Optionally, the end of the central through bore proximate the end cap 30 is flared. Thus, the arrangement makes the cooling medium flow out from the liquid passing gap 21 more easily, and improves the flow fluency of the cooling medium.

Optionally, the end of the liquid conduit 20 facing the closure 13 is flared. Thus, the arrangement makes it easier for the cooling medium to flow from the inner cavity of the liquid flowing pipe 20 into the preset gap 22, so as to improve the flowing fluency of the cooling medium.

In the present embodiment, the liquid conduit 20 is made of rubber or silicone. Thus, the above arrangement can reduce the friction between the liquid passing pipe 20 and the screw 10 during the rotation of the screw 10 to reduce the structural wear of the liquid passing pipe 20 and the screw 10.

As shown in fig. 1 and 8, the present application also provides a screw apparatus including a driving device 70, the driving device 70 being in driving connection with the second end of the screw 10 of the screw assembly to drive the screw 10 to rotate. Wherein, the screw rod component is the screw rod component. In this way, the driving device 70 drives the screw 10 to rotate, so as to realize the transmission of the screw 10.

As shown in fig. 8, the present application further provides a transmission system, which includes a screw device, a first pipeline 80, a second pipeline 100, and a liquid supply device 90, wherein one end of the first pipeline 80 is connected to the first liquid passing portion 31 of the screw device, the other end of the first pipeline 80 is connected to the liquid supply device 90, one end of the second pipeline 100 is connected to the second liquid passing portion 32 of the screw device, and the other end of the second pipeline 100 is connected to the liquid supply device 90. Wherein the screw equipment is the screw equipment.

Specifically, the cooling medium in the liquid supply device 90 is connected to the end cover 30 through the first pipeline 80 to enter the liquid passing pipeline 20 through the first liquid passing part 31 to cool the screw 10. Then, the cooling medium in the liquid passing pipe 20 enters the preset gap 22, so as to sequentially enter the liquid passing gap 21 and the liquid passing cavity 33 through the preset gap 22, finally flows into the second pipe 100 through the second liquid passing part 32, and is discharged back to the liquid supply device 90 through the second pipe 100, so as to realize the circulating flow of the cooling medium.

Specifically, the liquid supply device 90 has a liquid level detection switch therein to monitor the residual amount of the cooling medium in real time, thereby ensuring smooth operation of the cooling circulation pipeline. The liquid supply device 90 is also internally provided with a variable-frequency temperature control structure, and the temperature control precision of the temperature control structure is within the range of +/-0.1 ℃, so that the implementation effect of the transmission system is ensured.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the liquid passing pipeline penetrates through the mounting cavity of the screw rod, and a liquid passing gap is formed between the outer surface of the liquid passing pipeline and the wall of the mounting cavity. In the operation process of the screw, cooling medium can enter the liquid passing pipeline through the first liquid passing part and flow in the inner cavity of the liquid passing pipeline so as to cool the screw. And then, the cooling medium flowing out of the liquid passing pipeline enters the preset gap, sequentially enters the liquid passing gap and the liquid passing cavity through the preset gap, and finally flows out of the screw assembly through the second liquid passing part. Like this, coolant flows in liquid pipeline and liquid clearance to take away the heat that produces on the screw rod, prevent that the screw rod from taking place the extension deformation because surface temperature is too high, and then solved among the prior art screw rod and easily taken place the problem of deformation at long-time rotation in-process, promoted screw rod set's transmission precision.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A screw assembly, comprising:

a screw (10) having a mounting cavity (11) provided along an axial direction thereof;

the liquid passing pipeline (20) is arranged in the installation cavity (11) in a penetrating mode, and a liquid passing gap (21) is formed between the outer surface of the liquid passing pipeline (20) and the wall of the installation cavity (11);

the end cover (30) is connected with the screw rod (10) and forms a liquid passing cavity (33) with the first end of the screw rod (10), the end cover (30) is provided with a first liquid passing part (31) and a second liquid passing part (32) which are independently arranged, the first liquid passing part (31) is communicated with the inner cavity of the liquid passing pipeline (20), and the second liquid passing part (32) is communicated with the liquid passing cavity (33) and is communicated with the liquid passing gap (21) through the liquid passing cavity (33);

a preset gap (22) is formed between one end, far away from the first liquid passing part (31), of the liquid passing pipeline (20) and the wall of the installation cavity (11), and the inner cavity of the liquid passing pipeline (20) is communicated with the liquid passing gap (21) through the preset gap (22).

2. The screw assembly of claim 1, further comprising:

the supporting seat (40), the supporting seat (40) has a mounting hole, the screw (10) is rotatably arranged in the mounting hole in a penetrating way, and the end cover (30) is connected with the supporting seat (40);

a sealing structure (50), wherein the sealing structure (50) is arranged between the hole wall of the mounting hole and the outer surface of the screw rod (10) so as to seal the joint of the mounting hole and the screw rod (10).

3. The screw assembly of claim 2, further comprising:

and one end of the pipeline joint (60) is connected with the first liquid passing part (31), and the other end of the pipeline joint (60) is connected with the liquid passing pipeline (20).

4. The screw assembly of claim 3, wherein the end cap (30) comprises:

a cylindrical body (34) having the first liquid passage portion (31) and the second liquid passage portion (32);

the flanging structure (35) is arranged at one end, facing the supporting seat (40), of the cylindrical body (34), and the flanging structure (35) is connected with the supporting seat (40);

wherein, the number of the first liquid passing parts (31) is one or more, when the number of the first liquid passing parts (31) is multiple, the multiple first liquid passing parts (31) are arranged around the circumference of the cylindrical body (34) at intervals;

the number of the second liquid passing parts (32) is one or more, and when the number of the second liquid passing parts (32) is multiple, the multiple second liquid passing parts (32) are arranged at intervals around the circumference of the cylindrical body (34).

5. Screw assembly according to claim 4, wherein the first liquid passage (31) is a first channel comprising a first sub-channel (311) and a second sub-channel (312) communicating with each other; the first sub-channel (311) extends along the axis direction of the cylindrical body (34), one end of the pipeline joint (60) extends into the first sub-channel (311) and then is connected with the first sub-channel (311), and one end, far away from the first sub-channel (311), of the second sub-channel (312) is connected with a liquid supply device (90) through a first pipeline (80); the first sub-channel (311) and the second sub-channel (312) are arranged at a first included angle.

6. Screw assembly according to claim 5, wherein the second liquid passage (32) is a second channel comprising a third sub-channel (321) and a fourth sub-channel (322) communicating with each other; the third sub-channel (321) extends along the axial direction of the cylindrical body (34) and is communicated with the liquid passing cavity (33), and one end, away from the third sub-channel (321), of the fourth sub-channel (322) is connected with the liquid supply device (90) through a second pipeline (100); and a second included angle is formed between the third sub-channel (321) and the fourth sub-channel (322).

7. Screw assembly according to claim 6, wherein the passage mouth of the second sub-passage (312) on the cylindrical body (34) is located on the outer peripheral surface of the cylindrical body (34); and/or the passage opening of the fourth sub-passage (322) on the cylindrical body (34) is located on the outer peripheral surface of the cylindrical body (34).

8. Screw assembly according to claim 1, wherein the screw (10) comprises:

a screw body (12), the screw body (12) having a central through hole;

a blocking piece (13) arranged in the central through hole to block one end of the central through hole far away from the end cover (30); the hole wall of the central through hole and the plugging piece (13) form the installation cavity (11), and the central through hole and the screw rod body (12) are coaxially arranged.

9. The screw assembly of claim 8,

one end of the central through hole close to the end cover (30) is a flaring; and/or

The end of the liquid passing pipeline (20) facing the plugging piece (13) is a flaring end.

10. Screw apparatus, comprising a drive means (70), said drive means (70) being in driving connection with a second end of a screw (10) of said screw assembly for driving said screw (10) in rotation; wherein the screw assembly is as claimed in any one of claims 1 to 9.

11. A transmission system comprises a screw rod device, a first pipeline (80), a second pipeline (100) and a liquid supply device (90), wherein one end of the first pipeline (80) is connected with a first liquid passing part (31) of the screw rod device, the other end of the first pipeline (80) is connected with the liquid supply device (90), one end of the second pipeline (100) is connected with a second liquid passing part (32) of the screw rod device, and the other end of the second pipeline (100) is connected with the liquid supply device (90); wherein the screw apparatus is the screw apparatus of claim 10.

Images