A vacuum device for preparing medical polymer materials

Abstract

The present invention relates to the technical field of vacuum devices, and discloses a vacuum device for preparing medical polymer materials, comprising a vacuum chamber, an air inlet is provided at the bottom of the vacuum chamber, an air inlet pipe is fixedly installed in the air inlet, a control valve is arranged on the air inlet pipe and is located below the vacuum chamber, the top of the air inlet pipe extends into the vacuum chamber and is fixedly installed with a sputtering chamber, an air extraction port is provided at the top of the vacuum chamber, an air extraction pipe is fixedly installed in the air extraction port, and the bottom of the air extraction pipe extends into the vacuum chamber and is fixedly installed with a mounting pipe. The vacuum device for preparing medical polymer materials has strong practicality, and is convenient for gas to enter the sputtering chamber uniformly by setting a plurality of fixed pipes, and the air extraction pipe and the connecting pipe are sealed by a sealing plate and a sliding plate, thereby improving the sealing of the vacuum chamber, preventing gas from entering the vacuum chamber due to poor sealing, ensuring absolute vacuum in the vacuum chamber, and meeting the needs of use.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum devices, in particular to a vacuum device for preparing medical polymer materials. Background Art

[0002] Medical polymer materials currently used, such as wound dressings, burn dressings, band-aid dressings, surgical gowns, patient clothing, and medical polymer interventional devices, are all made of polyester polymers, polyolefin polymers, polysaccharide polymers, polyurethane polymers, cellulose polymers, etc. In actual use, these materials come into contact with wounds, scalded skin, and body tissues, but they often cause infection or inflammation of wounds or tissues because they have no anti-infection properties and poor biocompatibility, further making wound healing and tissue regeneration difficult.

[0003] For example, wound patches are made of polyethylene non-woven fabric. In addition to protecting the wound from external influences during use, they are also required to be able to kill or inhibit infectious bacteria near the wound, and have excellent biocompatibility to create a good regeneration microenvironment for wound cells or tissues. Magnetron sputtering technology is a surface coating technology based on metal, glass, and ceramics. The membrane prepared by it has the advantages of uniform and dense film structure, excellent performance, high adhesion between the film and the base material, fast deposition speed, easy sputtering of any substance, no change in the properties of the substrate, and no environmental pollution.

[0004] At present, it has been more and more widely used in the fields of machinery, electronics and ceramics. As a major branch of materials, polymer materials have fewer related patents because the softness of their substrates increases the difficulty of magnetron sputtering surface coating.

[0005] However, traditional magnetron sputtering technology has low efficiency and complex operation, and cannot perform quantitative processing according to the situation. In addition, due to poor sealing after evacuation, it is easy for gas to enter the vacuum chamber and absolute vacuum cannot be guaranteed, so it cannot meet the needs of use. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the present invention provides a vacuum device for preparing medical polymer materials, which has the advantages of improving the sealing of the vacuum chamber, preventing gas from entering the vacuum chamber due to poor sealing, and ensuring absolute vacuum in the vacuum chamber. It solves the problems of low efficiency, complicated operation, and inability to perform quantitative processing according to the situation in traditional magnetron sputtering technology, and poor sealing after evacuation, which easily causes gas to enter the vacuum chamber, and absolute vacuum cannot be guaranteed, so it cannot meet the needs of use.

[0008] (II) Technical solution

[0009] The present invention provides the following technical scheme: a vacuum device for preparing medical polymer materials, comprising a vacuum chamber, wherein an air inlet is provided at the bottom of the vacuum chamber, an air inlet pipe is fixedly installed in the air inlet, a control valve is arranged on the air inlet pipe and is located below the vacuum chamber, the top end of the air inlet pipe extends into the vacuum chamber and is fixedly installed with a sputtering chamber, an air extraction port is provided at the top of the vacuum chamber, an air extraction pipe is fixedly installed in the air extraction port, the bottom end of the air extraction pipe extends into the vacuum chamber and is fixedly installed with a mounting pipe, two positioning pipes are fixedly installed at the bottom of the mounting pipe, a fixing pipe is fixedly installed on one side of the two positioning pipes close to each other, and ends of the two fixing pipes close to each other extend into the sputtering chamber, a connecting pipe is fixedly installed at the top of the air extraction pipe, a sealing block is fixedly installed on the top of the connecting pipe, a sealing groove is provided at the bottom of the sealing block, a sealing plate is slidably installed on the connecting pipe, a fixing plate is fixedly installed on the bottom of the connecting pipe, a sliding groove is provided on the side of the fixing plate close to the air extraction pipe, and the sealing plate and the sealing groove are clamped to seal the connecting pipe;

[0010] A slider is fixedly installed on the side of the sealing plate away from the exhaust pipe, and the slider is slidably connected to the slide groove. A limit hole is provided on the slider, and a limit rod is slidably installed in the limit hole, and the top and bottom ends of the limit rod are respectively fixedly connected to the top inner wall and the bottom inner wall of the corresponding slide groove. A limit spring sleeved on the outside of the limit rod is fixedly installed at the bottom of the slider, and the bottom end of the limit spring is fixedly connected to the bottom inner wall of the slide groove. A fixed groove is provided on the inner wall of one side of the exhaust port, and the limit spring plays a role of limiting and resetting;

[0011] A sliding groove is provided on the inner wall of the other side of the air extraction port, a sliding plate is slidably installed in the sliding groove, one end of the sliding plate is sealed with the fixed groove, a positioning groove is provided on the other end of the sliding plate, a positioning rod is slidably installed in the positioning groove, one end of the positioning rod extends to the outside of the sliding plate and is fixedly connected to the inner wall of one side of the sliding groove, and the sliding plate and the fixed groove are clamped to seal the air extraction pipe;

[0012] A connecting groove is provided on the top of the vacuum chamber, the connecting groove is connected with the sliding groove, a connecting rod is slidably installed in the connecting groove, the bottom end of the connecting rod extends into the sliding groove and is fixedly connected to the top of the sliding plate, and a return spring sleeved on the outside of the positioning rod is fixedly installed on the other end of the sliding plate, and one end of the return spring away from the sliding plate is fixedly connected to the inner wall of one side of the sliding groove, and the return spring plays the role of limiting and resetting;

[0013] A rotating wheel is rotatably installed on the top of the vacuum chamber, a steel rope is wound around the rotating wheel, one end of the steel rope is fixedly connected to the bottom end of the sealing plate, and the other end of the steel rope is fixedly connected to the connecting rod, and the movement of the steel rope drives the sealing plate to move.

[0014] Preferably, a reset hole is provided on the connecting rod, a reset rod is slidably installed in the reset hole, and both ends of the reset rod are respectively fixedly connected to the inner wall of one side of the corresponding connecting groove, and the reset rod limits the connecting rod.

[0015] Preferably, there are multiple fixed tubes, and the multiple fixed tubes are distributed on the positioning tube at equal distances in the vertical direction. The multiple fixed tubes facilitate the gas to enter the sputtering chamber evenly.

[0016] Three beneficial effects

[0017] Compared with the prior art, the present invention provides a vacuum device for preparing medical polymer materials, which has the following beneficial effects:

[0018] 1. The vacuum device for preparing medical polymer materials opens the control valve and enters the sputtering chamber through the air inlet pipe. When the sputtering chamber is supplied with air, the connecting rod is pulled, and the connecting rod drives the sliding plate to move. The sliding plate compresses the reset spring, and the reset spring absorbs energy to move the sliding plate out of the fixed groove. The steel rope drives the sealing plate to move, and the sealing plate drives the slider to move. The slider compresses the limit spring, and the limit spring absorbs energy to move the sealing plate out of the sealing groove, and the air extraction pipe and the connecting pipe are opened.

[0019] 2. The vacuum device for preparing medical polymer materials has an air outlet pipe sleeve of the blower arranged on the connecting pipe, and the gas enters the installation pipe through the connecting pipe and the exhaust pipe, and enters the two positioning pipes through the installation pipe. After the inflation is completed, the connecting rod is loosened, and the sealing plate is inserted into the sealing groove and the sliding plate is inserted into the fixing groove under the spring rebound force of the limit spring and the return spring. The exhaust pipe and the connecting pipe are sealed by the sealing plate and the sliding plate, thereby improving the sealing performance of the vacuum chamber.

[0020] The present invention has strong practicality. By arranging a plurality of fixed pipes, it is convenient for gas to enter the sputtering chamber evenly. The exhaust pipe and the connecting pipe are sealed by a sealing plate and a sliding plate, thereby improving the sealing of the vacuum chamber, preventing gas from entering the vacuum chamber due to poor sealing, ensuring absolute vacuum in the vacuum chamber, and meeting the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a vacuum device for preparing medical polymer materials proposed by the present invention;

[0022] Figure 2 A vacuum device for preparing medical polymer materials proposed by the present invention Figure 1 A magnified view of the local structure of the middle A part;

[0023] Figure 3 A vacuum device for preparing medical polymer materials proposed by the present invention Figure 1 A magnified view of the local structure of the middle B part;

[0024] Figure 4 A vacuum device for preparing medical polymer materials proposed by the present invention Figure 1 Enlarged view of the local structure of part C in the middle.

[0025] In the figure: 1 vacuum chamber, 2 air inlet, 3 air inlet pipe, 4 control valve, 5 sputtering chamber, 6 exhaust port, 7 exhaust pipe, 8 mounting pipe, 9 positioning pipe, 10 fixed pipe, 11 connecting pipe, 12 sealing block, 13 sealing groove, 14 sealing plate, 15 fixed plate, 16 slide groove, 17 slider, 18 limiting hole, 19 limiting rod, 20 limiting spring, 21 fixed groove, 22 sliding groove, 23 sliding plate, 24 positioning groove, 25 positioning rod, 26 connecting groove, 27 connecting rod, 28 return spring, 29 rotating wheel, 30 steel rope. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-4 A vacuum device for preparing medical polymer materials comprises a vacuum chamber 1, an air inlet 2 is provided at the bottom of the vacuum chamber 1, an air inlet pipe 3 is fixedly installed in the air inlet 2, a control valve 4 is arranged on the air inlet pipe 3 and is located below the vacuum chamber 1, a sputtering chamber 5 is fixedly installed on the top of the air inlet pipe 3, an air extraction port 6 is provided at the top of the vacuum chamber 1, an air extraction pipe 7 is fixedly installed in the air extraction port 6, a bottom end of the air extraction pipe 7 extends into the vacuum chamber 1 and is fixedly installed with a mounting pipe 8, two positioning pipes 9 are fixedly installed at the bottom of the mounting pipe 8, and the two positioning pipes 9 are fixedly installed at the bottom of the mounting pipe 8. A fixing tube 10 is fixedly installed on one side where the position tubes 9 are close to each other, and one end of the two fixing tubes 10 close to each other extends into the sputtering chamber 5, a connecting tube 11 is fixedly installed on the top of the exhaust pipe 7, a sealing block 12 is fixedly installed on the top of the connecting tube 11, a sealing groove 13 is provided at the bottom of the sealing block 12, a sealing plate 14 is slidably installed on the connecting tube 11, a fixing plate 15 is fixedly installed on the bottom of the connecting tube 11, a sliding groove 16 is provided on the side of the fixing plate 15 close to the exhaust pipe 7, and the sealing plate 14 is clamped in the sealing groove 13 to seal the connecting tube 11.

[0028] In the present invention, a slider 17 is fixedly installed on the side of the sealing plate 14 away from the exhaust pipe 7, and the slider 17 is slidably connected to the slide groove 16. A limiting hole 18 is provided on the slider 17, and a limiting rod 19 is slidably installed in the limiting hole 18, and the top and bottom ends of the limiting rod 19 are respectively fixedly connected to the top inner wall and the bottom inner wall of the corresponding slide groove 16. A limiting spring 20 is fixedly installed on the bottom of the slider 17 and is sleeved on the outside of the limiting rod 19. The bottom end of the limiting spring 20 is fixedly connected to the bottom inner wall of the slide groove 16. A fixing groove 21 is provided on the inner wall of one side of the exhaust port 6, and the limiting spring 20 plays a role of limiting and resetting.

[0029] In the present invention, a sliding groove 22 is provided on the inner wall on the other side of the exhaust port 6, and a sliding plate 23 is slidably installed in the sliding groove 22. One end of the sliding plate 23 is sealed with the fixed groove 21. A positioning groove 24 is provided on the other end of the sliding plate 23. A positioning rod 25 is slidably installed in the positioning groove 24. One end of the positioning rod 25 extends to the outside of the sliding plate 23 and is fixedly connected to the inner wall of one side of the sliding groove 22. The sliding plate 23 and the fixed groove 21 are clamped together to seal the exhaust pipe 7.

[0030] In the present invention, a connecting groove 26 is provided at the top of the vacuum chamber 1, and the connecting groove 26 is connected to the sliding groove 22. A connecting rod 27 is slidably installed in the connecting groove 26, and the bottom end of the connecting rod 27 extends into the sliding groove 22 and is fixedly connected to the top of the sliding plate 23. A reset spring 28 sleeved on the outside of the positioning rod 25 is fixedly installed on the other end of the sliding plate 23. The end of the reset spring 28 away from the sliding plate 23 is fixedly connected to the inner wall of one side of the sliding groove 22, and the reset spring 28 plays the role of limiting and resetting.

[0031] In the present invention, a rotating wheel 29 is rotatably installed on the top of the vacuum chamber 1, and a steel rope 30 is wound around the rotating wheel 29. One end of the steel rope 30 is fixedly connected to the bottom end of the sealing plate 14, and the other end of the steel rope 30 is fixedly connected to the connecting rod 27. The movement of the steel rope 30 drives the sealing plate 14 to move.

[0032] In the present invention, a reset hole is formed on the connecting rod 27 , a reset rod is slidably installed in the reset hole, and both ends of the reset rod are fixedly connected to the inner wall of one side of the corresponding connecting groove 26 , and the reset rod limits the connecting rod 27 .

[0033] In the present invention, there are multiple fixed tubes 10 , and the multiple fixed tubes 10 are distributed on the positioning tube 9 at equal distances in the vertical direction. The multiple fixed tubes 10 facilitate the gas to enter the sputtering chamber 5 evenly.

[0034] In summary, during use of the vacuum device for preparing medical polymer materials, the control valve 4 is opened, and the air enters the sputtering chamber 5 through the air inlet pipe 3. When air is introduced into the sputtering chamber 5, the connecting rod 27 is pulled, and the connecting rod 27 drives the sliding plate 23 to move, and the sliding plate 23 compresses the reset spring 28, and the reset spring 28 absorbs energy, so that the sliding plate 23 moves out of the fixed groove 21. At the same time, the connecting rod 27 drives the steel rope 30 to move, and the steel rope 30 drives the rotating wheel 29 to rotate. At the same time, the steel rope 30 drives the sealing plate 14 to move, and the sealing plate 14 drives the slider 17 to move, and the slider 17 compresses the limit spring 20, and the limit spring 20 absorbs energy, so that the sealing plate 14 moves out of the sealing groove 13, the exhaust pipe 7 and the connecting pipe 11 are opened, and then the air outlet pipe of the blower is set on the connecting pipe 11, and the gas enters the installation pipe 8 through the connecting pipe 11 and the exhaust pipe 7. The gas enters into two positioning tubes 9 through the installation tube 8, and then enters into multiple fixed tubes 11 through the two positioning tubes 9. Multiple fixed tubes 10 make it easy for gas to enter the sputtering chamber 5 evenly. After the inflation is completed, the connecting rod 27 is loosened, and the sealing plate 14 is inserted into the sealing groove 13 under the spring rebound force of the limit spring 20 and the return spring 28, and the sliding plate 23 is inserted into the fixing groove 21. The exhaust pipe 7 and the connecting pipe 11 are sealed by the sealing plate 14 and the sliding plate 23, thereby improving the sealing performance of the vacuum chamber 1. The present invention has strong practicality. By setting up multiple fixed tubes 10, it is easy for gas to enter into the sputtering chamber 5 evenly. The exhaust pipe 7 and the connecting pipe 11 are sealed by the sealing plate 14 and the sliding plate 23, thereby improving the sealing performance of the vacuum chamber 1, preventing gas from entering the vacuum chamber 1 due to poor sealing, ensuring the absolute vacuum in the vacuum chamber 1, and meeting the needs of use.

[0035] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum device for preparing medical polymer materials, comprising a vacuum chamber (1), characterized in that: The bottom of the vacuum chamber (1) is provided with an air inlet (2), an air inlet pipe (3) is fixedly installed in the air inlet (2), a control valve (4) is arranged on the air inlet pipe (3) and is located below the vacuum chamber (1), the top end of the air inlet pipe (3) extends into the vacuum chamber (1) and is fixedly installed with a sputtering chamber (5), the top of the vacuum chamber (1) is provided with an air extraction port (6), an air extraction pipe (7) is fixedly installed in the air extraction port (6), the bottom end of the air extraction pipe (7) extends into the vacuum chamber (1) and is fixedly installed with a mounting pipe (8), and two positioning pipes (9) are fixedly installed at the bottom of the mounting pipe (8), and the two positioning pipes (9) are fixedly installed at the bottom of the mounting pipe (8). A fixing tube (10) is fixedly installed on the side of the two positioning tubes (9) close to each other, and the ends of the two fixing tubes (10) close to each other extend into the sputtering chamber (5); a connecting tube (11) is fixedly installed on the top of the exhaust pipe (7); a sealing block (12) is fixedly installed on the top of the connecting pipe (11); a sealing groove (13) is provided at the bottom of the sealing block (12); a sealing plate (14) is slidably installed on the connecting pipe (11); a fixing plate (15) is fixedly installed on the bottom of the connecting pipe (11); and a sliding groove (16) is provided on the side of the fixing plate (15) close to the exhaust pipe (7); A slider (17) is fixedly installed on the side of the sealing plate (14) away from the exhaust pipe (7), and the slider (17) is slidably connected to the slide groove (16). A limit hole (18) is provided on the slider (17), and a limit rod (19) is slidably installed in the limit hole (18), and the top and bottom ends of the limit rod (19) are respectively fixedly connected to the top inner wall and the bottom inner wall of the corresponding slide groove (16). A limit spring (20) sleeved on the outside of the limit rod (19) is fixedly installed at the bottom of the slider (17), and the bottom end of the limit spring (20) is fixedly connected to the bottom inner wall of the slide groove (16). A fixing groove (21) is provided on the inner wall of one side of the exhaust port (6); A sliding groove (22) is provided on the inner wall of the other side of the air extraction port (6), a sliding plate (23) is slidably installed in the sliding groove (22), one end of the sliding plate (23) is sealed with the fixed groove (21), a positioning groove (24) is provided on the other end of the sliding plate (23), a positioning rod (25) is slidably installed in the positioning groove (24), one end of the positioning rod (25) extends to the outer side of the sliding plate (23) and is fixedly connected to the inner wall of one side of the sliding groove (22); The top of the vacuum chamber (1) is provided with a connecting groove (26), the connecting groove (26) is connected with the sliding groove (22), a connecting rod (27) is slidably installed in the connecting groove (26), the bottom end of the connecting rod (27) extends into the sliding groove (22) and is fixedly connected to the top of the sliding plate (23), the other end of the sliding plate (23) is fixedly installed with a return spring (28) sleeved on the outside of the positioning rod (25), and one end of the return spring (28) away from the sliding plate (23) is fixedly connected to the inner wall of one side of the sliding groove (22); A rotating wheel (29) is rotatably mounted on the top of the vacuum chamber (1), a steel rope (30) is wound around the rotating wheel (29), one end of the steel rope (30) is fixedly connected to the bottom end of the sealing plate (14), and the other end of the steel rope (30) is fixedly connected to the connecting rod (27).

2. The vacuum device for preparing medical polymer materials according to claim 1, characterized in that: The connecting rod (27) is provided with a reset hole, in which a reset rod is slidably installed, and two ends of the reset rod are respectively fixedly connected to the inner wall of one side of the corresponding connecting groove (26).

3. The vacuum device for preparing medical polymer materials according to claim 1, characterized in that: The number of the fixing tubes (10) is multiple, and the multiple fixing tubes (10) are distributed on the positioning tube (9) at equal distances in the vertical direction.

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