Vacuumizing equipment for medical vacuum blood collection tube

Abstract

The invention relates to the technical field of medical treatment, in particular to vacuumizing equipment for medical vacuum blood collection tubes, which comprises a rack, a driving motor is fixedly connected to the outer side of the rack, a lead screw is fixedly connected to the output end of the driving motor, and the two ends of the lead screw are rotatably connected to the outer side of the rack; the outer side of the bearing device is fixedly connected with the inner side of the rack; according to the device, after vacuumizing is finished, a telescopic air cylinder shrinks to drive a sliding plate to reset, at the moment, a cushion block slides upwards along with a sliding rod, a blood collection tube in a fixing cylinder is ejected out, an operator can take the blood collection tube more conveniently and rapidly, the operation is convenient, the labor intensity of the operator is reduced, and the labor intensity of the operator is reduced. And the vacuumizing needle does not need to be manually taken out from the fixing cylinder with great effort, the working efficiency is improved, and the vacuumizing needle is protected in an initial state by arranging the protective sleeve, so that the vacuumizing needle is prevented from being externally collided or damaged.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to a vacuum pumping device for a medical vacuum blood collection tube. Background Art

[0002] In the medical field, medical vacuum blood collection tubes are commonly used blood collection tools. In order to ensure the vacuum state in the blood collection tubes, special vacuum equipment is required to vacuum the blood collection tubes. However, the existing vacuum equipment has some problems during use.

[0003] In current medical vacuum blood collection tube vacuum pumping equipment, the vacuum pumping needle is usually directly exposed to the outside, and is easily affected by external collisions, dust pollution, etc. when not in use, resulting in damage to the vacuum pumping needle. This will not only affect the service life of the vacuum pumping equipment, but may also affect the vacuum pumping effect due to damage to the vacuum pumping needle during the vacuum pumping process, and may even cause contamination to the collected blood sample. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention solves the technical problems by adopting the following technical solutions: a vacuum extraction device for a medical vacuum blood collection tube, comprising: a frame, the outer side of the frame is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a screw rod, and the two ends of the screw rod are rotatably connected to the outer side of the frame; a bearing device, the outer side of the bearing device is fixedly connected to the inner side of the frame; an air extraction device, the bottom of the air extraction device is slidably connected to the two sides of the frame, the bottom of the air extraction device is threadedly connected to the outer wall of the screw rod, the air extraction device is located on the outer side of the bearing device, and the air extraction device comprises a movable frame, both sides of the movable frame A lifting cylinder is fixedly connected, a moving plate is fixedly connected to the bottom of the lifting cylinder, a vacuum tank is fixedly connected to the top of the moving frame, a vacuum pump is fixedly connected to the outside of the vacuum tank, a telescopic tube is fixedly connected to the bottom of the vacuum tank, a protective component is fixedly connected to the bottom end of the telescopic tube, a pressure regulating valve is fixedly connected to the outer wall of the bottom of the vacuum tank, and the lifting cylinder drives the moving plate to slide downward along the surface of the moving frame, at which time the telescopic tube is extended, and the protective component moves downward with the moving plate and presses on the top of the blood collection tube, then the vacuum pump is turned on to evacuate the vacuum tank, and then the pressure regulating valve is turned on, and the vacuum operation can be performed at this time; The protective assembly includes a protective shell, a vacuum needle is fixedly connected to the inner wall of the protective shell, a protective sleeve is slidably connected to the inner wall of the protective shell, a sealing component is fixedly connected to the outer side of the protective sleeve, and a tension spring is fixedly connected to the outer side of the protective sleeve. The design of the protective sleeve can protect the vacuum needle in the initial state to prevent the vacuum needle from external collision or damage.

[0005] Preferably, the bottom of the movable frame is slidably connected to both sides of the frame, the inner wall of the movable frame is threadedly connected to the outer wall of the screw rod, the inner side of the movable frame is slidably connected to the outer wall of the movable plate, the inner side of the movable plate is fixedly connected to the outer side of the protective component, and the protective component is pressed on the top of the blood collection tube to form a stable connection between the vacuum extraction device and the blood collection tube to prevent loosening or leakage during the vacuum extraction process.

[0006] Preferably, the outer wall of the protective shell is fixedly connected to the inner wall of the movable plate, the top of the vacuum needle is fixedly connected to the bottom end of the telescopic tube, the protective sleeve is located on the outside of the vacuum needle, the bottom end of the tension spring is fixedly connected to the bottom of the inner wall of the protective shell, and the lifting cylinder drives the movable plate to slide downward along the surface of the movable frame. At this time, the telescopic tube is extended, and the extension of the telescopic tube can adapt to blood collection tubes of different heights to ensure the tightness of the connection.

[0007] Preferably, the sealing component includes a shell, the inner wall of the shell is fixedly connected to a limiting guide rail, the outer wall of the limiting guide rail is slidably connected to a sealing plate, the top of the sealing plate is rotatably connected to a movable rod, the top of the movable rod is rotatably connected to a fixing ring, and the bottom of the fixing ring is fixedly connected to a compression spring. When the sealing component in the protective assembly contacts the top of the blood collection tube, the protective sleeve slides into the protective shell, and at this time the bottom end of the vacuum needle approaches the bottom of the protective sleeve and forces the tension spring to be stretched.

[0008] Preferably, the bottom end of the compression spring is fixedly connected to the top of the shell, the top of the shell is fixedly connected to the bottom of the protective sleeve, the outer side of the sealing plate is slidably connected to the inner wall of the shell, and the inner side of the fixing ring is slidably connected to the outer wall of the protective sleeve. When the bottom of the protective shell contacts the surface of the fixing ring, the protective shell presses the fixing ring downward, so that the compression spring is compressed. At this time, the top end of the movable rod moves downward with the fixing ring, and its bottom end drives the two sealing plates in the shell to slide along the surface of the limiting guide rail to the side away from each other.

[0009] Preferably, the carrying device includes a placement box, the inner wall of the placement box is fixedly connected with a fixing component, and the fixing component is linearly arranged along the central axis of the placement box, the inner side of the placement box is fixedly connected with a telescopic cylinder, the bottom of the telescopic cylinder is fixedly connected with a sliding plate, the telescopic cylinder is extended to make the sliding plate move downward, and its top end drives the displacement plate to slide along the surface of the fixed frame, at the same time, the elastic force of the compressed return spring is gradually released, which assists in pushing the displacement plate and the lateral splints to approach each other, so as to fix the blood collection tube.

[0010] Preferably, the outer side of the placement box is fixedly connected to the inner side of the frame, the inner wall of the placement box is slidably connected to the side wall of the sliding plate, and the top of the sliding plate is fixedly connected to the bottom of the fixed assembly. Through the extension and retraction of the telescopic cylinder, the movement of the sliding rod and the elastic action of the return spring, blood collection tubes of different diameters can be fixed.

[0011] Preferably, the fixing assembly includes a fixing cylinder, a sliding rod is slidably connected to the bottom of the inner wall of the fixing cylinder, a cushion block is fixedly connected to the top of the sliding rod, the inner wall of the fixing cylinder is fixedly connected to a fixing frame, the outer wall of the fixing frame is slidably connected to a displacement plate, the top of the displacement plate is fixedly connected to a lateral clamping plate, the bottom end of the displacement plate is rotatably connected to a connecting rod, and the outer side of the displacement plate is fixedly connected to a return spring. The blood collection tube is fixed by placing the fixing assembly in the box and the blood collection tube is placed in the fixing cylinder. At this time, the bottom of the blood collection tube is in contact with the cushion block.

[0012] Preferably, the outer side of the fixed cylinder is fixedly connected to the inner wall of the placement box, the bottom end of the sliding rod is fixedly connected to the top of the sliding plate, the bottom end of the connecting rod is rotatably connected to the outer wall of the sliding rod, and the end of the reset spring away from the displacement plate is fixedly connected to the outer side of the fixed frame. After the vacuum is completed, the telescopic cylinder contracts to drive the sliding plate to reset. At this time, the cushion block slides upward with the sliding rod and pushes out the blood collection tube in the fixed cylinder.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention arranges a fixing assembly, and fixes the blood collection tube by placing the fixing assembly in the box. The blood collection tube is placed in the fixing cylinder. At this time, the bottom of the blood collection tube contacts the cushion block, and then the telescopic cylinder extends, so that the sliding plate moves downward. When the sliding plate moves downward, the sliding rod pulls the cushion block to move downward, and at the same time, the bottom end of the connecting rod slides downward with the sliding rod, and its top end drives the displacement plate to slide along the surface of the fixing frame. At the same time, the elastic force of the compressed return spring is gradually released, which assists in pushing the displacement plate and the lateral clamping plates to approach each other, thereby fixing the blood collection tube, so that it always maintains a vertical state during the vacuum operation, thereby ensuring the vacuum effect and accuracy.

[0014] 2. The present invention fixes blood collection tubes of different diameters by means of the telescopic cylinder, the movement of the sliding rod and the elastic action of the reset spring. When blood collection tubes of different specifications are placed, the system can automatically adjust the position and clamping force of the lateral clamp to adapt to blood collection tubes of different sizes, thereby improving the versatility of the device. After the vacuum is exhausted, the telescopic cylinder contracts, driving the sliding plate to reset. At this time, the cushion block slides upward with the sliding rod and pushes the blood collection tube in the fixed tube out. The operator can take the blood collection tube more conveniently and quickly without having to manually take it out from the fixed tube, thereby improving work efficiency.

[0015] 3. The present invention provides a protection that after the vacuuming is completed, the telescopic cylinder contracts to drive the sliding plate to reset. At this time, the cushion block slides upward with the sliding rod and pushes the blood collection tube in the fixed cylinder out. The operator can take the blood collection tube more conveniently and quickly without having to manually take it out from the fixed cylinder, thereby improving work efficiency.

[0016] 4. The present invention provides a protective cover to protect the vacuum needle in the initial state, thereby preventing the vacuum needle from being hit or damaged externally. When the protective component contacts the blood collection tube, the protective cover slides into the protective shell, so that the vacuum needle gradually approaches the blood collection tube, thereby preventing the vacuum needle from being exposed to the outside and damaged when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the air extraction device of the present invention; Figure 4 It is a schematic diagram of the structure of the protection component of the present invention; Figure 5 It is a schematic structural diagram of the sealing component of the present invention; Figure 6 It is a structural schematic diagram of the carrying device of the present invention; Figure 7 It is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 8 It is a structural schematic diagram of the fixing frame of the present invention.

[0018] In the figure: 1. frame; 2. driving motor; 3. screw rod; 4. bearing device; 5. exhaust device; 51. moving frame; 52. vacuum tank; 53. vacuum pump; 54. pressure regulating valve; 55. telescopic tube; 56. protective component; 57. lifting cylinder; 58. moving plate; 561. protective shell; 562. vacuum needle; 563. protective sleeve; 564. sealing component; 565. tension spring; 641. shell; 642. limit guide rail; 643. sealing plate; 644. movable rod; 645. fixing ring; 646. compression spring; 41. placement box; 42. fixing component; 43. telescopic cylinder; 44. sliding plate; 421. fixing tube; 422. pad; 423. sliding rod; 424. fixing frame; 425. displacement plate; 426. connecting rod; 427. lateral clamp; 428. reset spring. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0020] Example: See Figure 1 - Figure 8 The present invention provides a technical solution: a vacuum pumping device for a medical vacuum blood collection tube, comprising: The frame 1 is fixedly connected to a driving motor 2 on the outside of the frame 1, and a screw rod 3 is fixedly connected to the output end of the driving motor 2, and both ends of the screw rod 3 are rotatably connected to the outside of the frame 1; a carrying device 4, the outside of the carrying device 4 is fixedly connected to the inside of the frame 1; an exhaust device 5, the bottom of the exhaust device 5 is slidably connected to the two sides of the frame 1, the bottom of the exhaust device 5 is threadedly connected to the outer wall of the screw rod 3, and the exhaust device 5 is located on the outside of the carrying device 4. The exhaust device 5 includes a moving frame 51, and the two sides of the moving frame 51 are fixedly connected to a lifting cylinder 57, and the bottom of the lifting cylinder 57 is fixedly connected to The moving plate 58 and the top of the moving frame 51 are fixedly connected with a vacuum tank 52, the outer side of the vacuum tank 52 is fixedly connected with a vacuum pump 53, the bottom of the vacuum tank 52 is fixedly connected with a telescopic tube 55, the bottom end of the telescopic tube 55 is fixedly connected with a protective component 56, and the outer wall of the bottom of the vacuum tank 52 is fixedly connected with a pressure regulating valve 54. The blood collection tube is fixed by the carrying device 4, and then the driving motor 2 installed on the outer side of the frame 1 drives the screw rod 3 to rotate, thereby driving the air extraction device 5 to move, thereby adjusting the position of the air extraction device 5 to extract the blood collection tube fixed in the carrying device 4; The protective assembly 56 includes a protective shell 561, the inner wall of the protective shell 561 is fixedly connected with a vacuum needle 562, the inner wall of the protective shell 561 is slidably connected with a protective sleeve 563, the outer side of the protective sleeve 563 is fixedly connected with a sealing component 564, the outer side of the protective sleeve 563 is fixedly connected with a tension spring 565, the bottom of the mobile frame 51 is slidably connected with both sides of the frame 1, the inner wall of the mobile frame 51 is threadedly connected with the outer wall of the screw rod 3, the inner side of the mobile frame 51 is slidably connected with the outer wall of the mobile plate 58, the inner side of the mobile plate 58 is fixedly connected with the outer side of the protective assembly 56, the outer wall of the protective shell 561 is fixedly connected with the inner wall of the mobile plate 58, the top of the vacuum needle 562 is fixed to the bottom end of the telescopic tube 55 The protective sleeve 563 is located on the outside of the vacuum needle 562, the bottom end of the tension spring 565 is fixedly connected to the bottom of the inner wall of the protective shell 561, the sealing component 564 includes a shell 641, the inner wall of the shell 641 is fixedly connected to the limiting guide rail 642, the outer wall of the limiting guide rail 642 is slidably connected to the sealing plate 643, the top of the sealing plate 643 is rotatably connected to the movable rod 644, the top of the movable rod 644 is rotatably connected to the fixing ring 645, the bottom of the fixing ring 645 is fixedly connected to the compression spring 646, the bottom end of the compression spring 646 is fixedly connected to the top of the shell 641, the top of the shell 641 is fixedly connected to the bottom of the protective sleeve 563, the outer side of the sealing plate 643 is connected to the shell 64 1 is slidably connected, and the inner side of the fixing ring 645 is slidably connected with the outer wall of the protective sleeve 563. When vacuuming, the lifting cylinder 57 drives the moving plate 58 to slide downward along the surface of the moving frame 51. At this time, the telescopic tube 55 is extended, and the protective component 56 moves downward with the moving plate 58 and presses on the top of the blood collection tube. Then, the vacuum pump 53 is turned on to evacuate the vacuum tank 52, and then the pressure regulating valve 54 is turned on, and the vacuuming operation can be performed. In this process, when the sealing component 564 in the protective component 56 contacts the top of the blood collection tube, the protective sleeve 563 slides into the protective shell 561, and the bottom end of the vacuum needle 562 approaches the bottom of the protective sleeve 563, and forces the pull The extension spring 565 is stretched, and then when the bottom of the protective shell 561 contacts the surface of the fixing ring 645, the protective shell 561 presses the fixing ring 645 downward, so that the compression spring 646 is compressed. At this time, the top of the movable rod 644 moves downward together with the fixing ring 645, and its bottom end drives the two sealing plates 643 in the shell 641 to slide along the surface of the limiting guide rail 642 to the side away from each other. At this time, the bottom end of the vacuum needle 562 can pass through the center of the shell 641 and be inserted into the rubber plug on the top of the blood collection tube; wherein, the protective component 56 is pressed on the top of the blood collection tube to form a stable connection between the vacuum device and the blood collection tube to prevent loosening or leakage during the vacuum process.The extension of the telescopic tube 55 can adapt to blood collection tubes of different heights to ensure the tightness of the connection. The design of the protective sleeve 563 can protect the vacuum needle 562 in the initial state to prevent the vacuum needle 562 from being hit or damaged by the outside. When the protective component 56 contacts the blood collection tube, the protective sleeve 563 slides into the protective shell 561, so that the vacuum needle 562 gradually approaches the blood collection tube, avoiding the vacuum needle 562 from being exposed to the outside and damaged when not in use.

[0021] The carrying device 4 includes a placement box 41, the inner wall of the placement box 41 is fixedly connected with a fixing assembly 42, and the fixing assembly 42 is linearly arranged along the central axis of the placement box 41, the inner side of the placement box 41 is fixedly connected with a telescopic cylinder 43, the bottom of the telescopic cylinder 43 is fixedly connected with a sliding plate 44, the outer side of the placement box 41 is fixedly connected to the inner side of the frame 1, the inner wall of the placement box 41 is slidably connected to the side wall of the sliding plate 44, the top of the sliding plate 44 is fixedly connected to the bottom of the fixing assembly 42, and the fixing assembly 42 includes a fixing cylinder 421, and the fixing cylinder 42 The bottom of the inner wall of the fixed cylinder 421 is slidably connected to a sliding rod 423, the top of the sliding rod 423 is fixedly connected to a cushion block 422, the inner wall of the fixed cylinder 421 is fixedly connected to a fixing frame 424, the outer wall of the fixing frame 424 is slidably connected to a displacement plate 425, the top of the displacement plate 425 is fixedly connected to a lateral clamping plate 427, the bottom end of the displacement plate 425 is rotatably connected to a connecting rod 426, the outer side of the displacement plate 425 is fixedly connected to a return spring 428, the outer side of the fixed cylinder 421 is fixedly connected to the inner wall of the placement box 41, the bottom end of the sliding rod 423 is fixedly connected to the sliding plate 4 The bottom end of the connecting rod 426 is rotatably connected to the outer wall of the sliding rod 423, and the end of the return spring 428 away from the displacement plate 425 is fixedly connected to the outer side of the fixing frame 424. The blood collection tube is fixed by the fixing assembly 42 in the placement box 4, and the blood collection tube is placed in the fixing cylinder 421. At this time, the bottom of the blood collection tube contacts the cushion block 422, and then the telescopic cylinder 43 is extended to make the sliding plate 44 move downward. When the sliding plate 44 moves downward, the sliding rod 423 pulls the cushion block 422 to move downward, and at the same time, the connecting rod 426 is The bottom end slides downward with the sliding rod 423, and the top end drives the displacement plate 425 to slide along the surface of the fixed frame 424. At the same time, the elastic force of the compressed return spring 428 is gradually released, which assists in pushing the displacement plate 425 and the lateral clamping plate 427 to approach each other, fix the blood collection tube, and keep it in a vertical state during the vacuum operation, so as to ensure the effect and accuracy of vacuuming. Through the telescopic cylinder 43, the movement of the sliding rod 423 and the elastic action of the return spring 428, blood collection tubes of different diameters can be fixed. When blood collection tubes of different specifications are placed, the system can automatically adjust the position and clamping force of the lateral clamping plate 427 to adapt to blood collection tubes of different sizes, thereby improving the versatility of the equipment. After the vacuuming is completed, the telescopic cylinder 43 contracts, driving the sliding plate 44 to reset. At this time, the pad 422 slides upward with the sliding rod 423, and pushes the blood collection tube in the fixed cylinder 421 out. The operator can take the blood collection tube more conveniently and quickly without the need to manually take it out from the fixed cylinder 421, thereby improving the work efficiency.

[0022] Working principle: When in use, the blood collection tube is fixed by the carrying device 4, and then the driving motor 2 installed outside the frame 1 drives the screw rod 3 to rotate, thereby driving the air extraction device 5 to move, thereby adjusting the position of the air extraction device 5 to extract air from the blood collection tube fixed in the carrying device 4; When fixing, the blood collection tube is fixed by the fixing component 42 in the placement box 4, and the blood collection tube is placed in the fixing tube 421. At this time, the bottom of the blood collection tube contacts the cushion block 422, and then the telescopic cylinder 43 extends, so that the sliding plate 44 moves downward. At this time, the sliding rod 423 pulls the cushion block 422 to move downward, and at the same time, the bottom end of the connecting rod 426 slides downward with the sliding rod 423, and its top end drives the displacement plate 425 to slide along the surface of the fixing frame 424. At the same time, the elastic force of the compressed return spring 428 is gradually released, which assists in pushing the displacement plate 425 and the lateral clamping plate 427 closer to each other, and fixes the blood collection tube so that it always remains in a vertical state during the vacuum operation, thereby ensuring the vacuum effect and accuracy.

[0023] Through the extension and retraction of the telescopic cylinder 43, the movement of the sliding rod 423 and the elastic action of the return spring 428, blood collection tubes of different diameters can be fixed. When blood collection tubes of different specifications are placed, the system can automatically adjust the position and clamping force of the lateral clamping plate 427 to adapt to blood collection tubes of different sizes, thereby improving the versatility of the device.

[0024] After the vacuuming is completed, the telescopic cylinder 43 contracts, driving the sliding plate 44 to reset. At this time, the cushion block 422 slides upward with the sliding rod 423 and pushes out the blood collection tube in the fixed tube 421. The operator can take the blood collection tube more conveniently and quickly without having to manually take it out from the fixed tube 421, thereby improving work efficiency.

[0025] When vacuuming, the lifting cylinder 57 drives the moving plate 58 to slide downward along the surface of the moving frame 51. At this time, the telescopic tube 55 is extended, and the protective component 56 moves downward with the moving plate 58 and presses on the top of the blood collection tube. Then, the vacuum pump 53 is turned on to vacuum the vacuum tank 52, and then the pressure regulating valve 54 is turned on, and the vacuuming operation can be carried out. During this process, when the sealing component 564 in the protective assembly 56 contacts the top of the blood collection tube, the protective sleeve 563 slides into the protective shell 561. At this time, the bottom end of the vacuum needle 562 approaches the bottom of the protective sleeve 563 and forces the tension spring 565 to be stretched. Then, when the bottom of the protective shell 561 contacts the surface of the fixing ring 645, the protective shell 561 presses the fixing ring 645 downward, so that the compression spring 646 is compressed. At this time, the top of the movable rod 644 moves downward together with the fixing ring 645, and its bottom end drives the two sealing plates 643 in the shell 641 to slide along the surface of the limiting guide rail 642 to the side away from each other. At this time, the bottom end of the vacuum needle 562 can pass through the center of the shell 641 and be inserted into the rubber plug at the top of the blood collection tube. The protective component 56 is pressed on the top of the blood collection tube to form a stable connection between the vacuum pumping device and the blood collection tube, preventing loosening or air leakage during the vacuum pumping process. The extension of the telescopic tube 55 can adapt to blood collection tubes of different heights to ensure the tightness of the connection.

[0026] The design of the protective sleeve 563 can protect the vacuum needle 562 in the initial state to prevent the vacuum needle 562 from being hit or damaged by the outside. When the protective assembly 56 contacts the blood collection tube, the protective sleeve 563 slides into the protective shell 561, so that the vacuum needle 562 gradually approaches the blood collection tube, thereby preventing the vacuum needle 562 from being exposed to the outside and damaged when not in use.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A vacuum pumping device for a medical vacuum blood collection tube, characterized in that: include: A frame (1), the outer side of the frame (1) being fixedly connected to a drive motor (2), the output end of the drive motor (2) being fixedly connected to a screw rod (3), and both ends of the screw rod (3) being rotatably connected to the outer side of the frame (1); A load-bearing device (4), the outer side of the load-bearing device (4) being fixedly connected to the inner side of the frame (1); An air extraction device (5), wherein the bottom of the air extraction device (5) is slidably connected to both sides of the frame (1), the bottom of the air extraction device (5) is threadedly connected to the outer wall of the screw rod (3), the air extraction device (5) is located outside the bearing device (4), the air extraction device (5) comprises a movable frame (51), both sides of the movable frame (51) are fixedly connected to lifting cylinders (57), the bottom of the lifting cylinder (57) is fixedly connected to a movable plate (58), the top of the movable frame (51) is fixedly connected to a vacuum tank (52), the outer side of the vacuum tank (52) is fixedly connected to a vacuum pump (53), the bottom of the vacuum tank (52) is fixedly connected to a telescopic tube (55), the bottom end of the telescopic tube (55) is fixedly connected to a protective component (56), and the outer wall of the bottom of the vacuum tank (52) is fixedly connected to a pressure regulating valve (54); The protective assembly (56) comprises a protective shell (561), a vacuum needle (562) is fixedly connected to the inner wall of the protective shell (561), a protective sleeve (563) is slidably connected to the inner wall of the protective shell (561), a sealing component (564) is fixedly connected to the outer side of the protective sleeve (563), and a tension spring (565) is fixedly connected to the outer side of the protective sleeve (563).

2. The vacuum pumping device for a medical vacuum blood collection tube according to claim 1, characterized in that: The bottom of the movable frame (51) is slidably connected to both sides of the frame (1), the inner wall of the movable frame (51) is threadedly connected to the outer wall of the screw rod (3), the inner side of the movable frame (51) is slidably connected to the outer wall of the movable plate (58), and the inner side of the movable plate (58) is fixedly connected to the outer side of the protective component (56).

3. The vacuum pumping device for a medical vacuum blood collection tube according to claim 1, characterized in that: The outer wall of the protective shell (561) is fixedly connected to the inner wall of the movable plate (58), the top end of the vacuum needle (562) is fixedly connected to the bottom end of the telescopic tube (55), the protective sleeve (563) is located outside the vacuum needle (562), and the bottom end of the tension spring (565) is fixedly connected to the bottom of the inner wall of the protective shell (561).

4. The vacuum pumping device for a medical vacuum blood collection tube according to claim 1, characterized in that: The sealing component (564) comprises a shell (641), the inner wall of the shell (641) is fixedly connected to a limiting guide rail (642), the outer wall of the limiting guide rail (642) is slidably connected to a sealing plate (643), the top of the sealing plate (643) is rotatably connected to a movable rod (644), the top of the movable rod (644) is rotatably connected to a fixing ring (645), and the bottom of the fixing ring (645) is fixedly connected to a compression spring (646).

5. The vacuum pumping device for a medical vacuum blood collection tube according to claim 4, characterized in that: The bottom end of the compression spring (646) is fixedly connected to the top of the shell (641), the top of the shell (641) is fixedly connected to the bottom of the protective sleeve (563), the outer side of the sealing plate (643) is slidably connected to the inner wall of the shell (641), and the inner side of the fixing ring (645) is slidably connected to the outer wall of the protective sleeve (563).

6. The vacuum pumping device for a medical vacuum blood collection tube according to claim 1, characterized in that: The carrying device (4) comprises a placement box (41), the inner wall of the placement box (41) is fixedly connected to a fixing assembly (42), and the fixing assembly (42) is linearly arranged along the central axis of the placement box (41), the inner side of the placement box (41) is fixedly connected to a telescopic cylinder (43), and the bottom of the telescopic cylinder (43) is fixedly connected to a sliding plate (44).

7. The vacuum pumping device for a medical vacuum blood collection tube according to claim 6, characterized in that: The outer side of the placement box (41) is fixedly connected to the inner side of the frame (1), the inner wall of the placement box (41) is slidably connected to the side wall of the sliding plate (44), and the top of the sliding plate (44) is fixedly connected to the bottom of the fixing assembly (42).

8. The vacuum pumping device for a medical vacuum blood collection tube according to claim 6, characterized in that: The fixing assembly (42) comprises a fixing cylinder (421), the bottom of the inner wall of the fixing cylinder (421) is slidably connected to a sliding rod (423), the top of the sliding rod (423) is fixedly connected to a cushion block (422), the inner wall of the fixing cylinder (421) is fixedly connected to a fixing frame (424), the outer wall of the fixing frame (424) is slidably connected to a displacement plate (425), the top of the displacement plate (425) is fixedly connected to a lateral clamping plate (427), the bottom end of the displacement plate (425) is rotatably connected to a connecting rod (426), and the outer side of the displacement plate (425) is fixedly connected to a return spring (428).

9. The vacuum pumping device for a medical vacuum blood collection tube according to claim 8, characterized in that: The outer side of the fixed cylinder (421) is fixedly connected to the inner wall of the placement box (41), the bottom end of the sliding rod (423) is fixedly connected to the top of the sliding plate (44), the bottom end of the connecting rod (426) is rotatably connected to the outer wall of the sliding rod (423), and one end of the return spring (428) away from the displacement plate (425) is fixedly connected to the outer side of the fixed frame (424).

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