A particle static elimination system for the production and processing of PCV film bags for blood transfusion and infusion systems

Abstract

The present invention relates to the field of medical technology, and discloses a system for eliminating static electricity of microparticles in the production and processing of PCV film bags for blood transfusion and infusion systems, comprising two groups of bag film conveying modules, a deviation correction module, a high-voltage discharge module, a negative pressure adsorption chassis and a bag film closing welding module installed on a bag film conveying path on an equipment frame. The present invention arranges a scraper in the negative pressure adsorption chassis, and the scraper is in contact with a side of the bag film that is away from the suction port of a vacuum negative pressure discharge component, so that microparticles intercepted by the away surface of the bag film are scraped off, and the scraped microparticles slide along a feeding path including the scraper, an elastic connecting film, a vibration plate and a supporting frame, and the vibration process of the vibration plate and the elastic connecting film in the feeding path avoids microparticle retention, ensures that the scraped microparticles are thoroughly sucked into the negative pressure zone and discharged, and realizes efficient removal of microparticles adsorbed on the bag film, thereby avoiding the problem of incomplete collection of microparticles due to interception by the away surface when the bag film passes through the negative pressure adsorption chassis.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a particle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems. Background Art

[0002] In blood transfusion or infusion systems, the control of particles and dust is a key link to ensure medical safety and patient health. Due to the characteristics of equipment materials, especially PVC bag films, static electricity is easily generated during processing and use, thereby adsorbing particles and dust in the air. Therefore, taking effective measures to eliminate static electricity and control particle adsorption is an important part of the design and operation of blood transfusion or infusion systems that cannot be ignored.

[0003] In the traditional PVC bag film static electricity elimination technology, the method of blowing ion wind is used to neutralize the static electricity on the surface of the bag film, thereby detaching the particles adsorbed thereon, and then collecting these scattered particles through a negative pressure adsorption device to achieve the cleaning of the PVC bag film. However, the negative pressure adsorption device has only one suction port, which means that the suction direction is fixed. When the PVC bag film passes through, one side of it will turn away from the suction port, which causes the side of the bag film away from the suction port to form a relative "blind spot". Even if there is no static electricity effect on this side, it cannot be effectively sucked into the negative pressure device, but is retained on the surface of the bag film. In particular, under the subsequent extrusion of the guide roller, the particles will be pressed back onto the bag film, resulting in incomplete collection of the particles, which still affects the cleanliness of the PVC bag film and the safety of subsequent use. Based on this, the present invention purposely provides a particle static electricity elimination system for producing and processing PCV film bags for blood transfusion and infusion systems, which can thoroughly collect the scattered particles on both sides of the bag film in the negative pressure device. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to provide a system for producing and processing microparticle static electricity elimination for PCV film bags used in blood transfusion and infusion systems, so as to solve the technical problem that the airflow direction in the negative pressure adsorption device is fixed, resulting in the bag film intercepting the scattered particles on the side facing away from the suction port, resulting in incomplete collection of the particles.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A microparticle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems, comprising two groups of bag film conveying modules, a deviation correction module, a high-voltage discharge module, a negative pressure adsorption chassis and a bag film closing welding module installed on the bag film conveying path on the equipment frame, the two groups of bag film conveying modules respectively convey a bag film to pass through the deviation correction module, the high-voltage discharge module, the negative pressure adsorption chassis and the bag film closing welding module in sequence, and the bag film closing welding module welds two bag films into a bag;

[0007] The negative pressure adsorption chassis is connected to the vacuum negative pressure discharge component, and its interior is divided into a front area and a back area by a bag film. There is a bag film between the back area and the suction port of the vacuum negative pressure discharge component, and there is a channel between the edge of the bag film and the inner wall of the negative pressure adsorption chassis. The back area is connected to the front area through the channel. A negative pressure area is provided in the back area, and the negative pressure area is connected to the vacuum negative pressure discharge component. The outlet end of the negative pressure adsorption chassis is rotatably installed with a first guide roller and a second guide roller for conveying the bag film. The first guide roller and the second guide roller are driven to rotate by a driving source, and both rotate In the opposite direction, a carrier frame is fixedly installed in the negative pressure adsorption chassis, the carrier frame is located in the departure area, the carrier frame is inclined, a scraper is provided at one end thereof, and the other end thereof is located in the negative pressure area, the horizontal height of the scraper is higher than the horizontal height of the negative pressure area, and the scraper is in contact with the bag film, a vibration plate is connected to the carrier frame through an elastic component, the edges of the vibration plate are connected to the carrier frame through an elastic connecting film, and it is driven to vibrate by the vibration component, the vibration component is connected to the second guide roller, the scraper, the carrier frame, the vibration plate and the elastic connecting film are all located on the same inclined plane.

[0008] Preferably, the vibration assembly includes a round rod, a movable plate and a transmission assembly, a plurality of round rods arranged at equal intervals are fixedly installed on the bottom surface of the vibration plate, the movable plate is slidably arranged in the negative pressure adsorption chassis, it is always parallel to the vibration plate, and a plurality of semicircular protrusions are fixedly installed on the side close to the vibration plate, the semicircular protrusions are abutted against the round rods, and there is a round rod between two adjacent semicircular protrusions, and the second guide roller drives the movable plate to reciprocate through the transmission assembly.

[0009] Preferably, the elastic component includes a longitudinal elastic connector and a transverse elastic connector, and multiple longitudinal elastic connectors and transverse elastic connectors are arranged at the connection between the vibration plate and the supporting frame. The moving direction of the active end of the longitudinal elastic connector is perpendicular to the inclined plane of the vibration plate, and the moving direction of the active end of the transverse elastic connector is parallel to the inclined plane of the vibration plate.

[0010] Preferably, the transmission assembly includes a connecting plate and a rotating wheel. The connecting plate is slidably installed on the inner wall of the negative pressure adsorption chassis. It is fixedly connected to the movable plate and is provided with a waist-shaped groove. The waist-shaped groove is perpendicular to the inclined plane of the movable plate. The rotating wheel is rotatably installed in the negative pressure adsorption chassis. It is transmission-connected to the second guide roller shaft through a synchronous belt, and a linkage block is eccentrically installed on it. The linkage block is slidably connected to the waist-shaped groove.

[0011] Preferably, an abutment wheel is rotatably installed in the negative pressure adsorption chassis, and the scraper abuts the bag film against the abutment wheel.

[0012] Preferably, the diameter of the rotating shaft of the abutment wheel is much smaller than the diameter of the abutment wheel, and its width is equal to the width of the bag film.

[0013] Preferably, both ends of the scraper are fixedly connected to the inner wall of the negative pressure adsorption chassis, and a buffer pad and an elastic connecting strip are provided at the connection with the supporting frame. The scraper, elastic connecting strip, supporting frame, vibration plate and elastic connecting membrane are all located on the same inclined plane.

[0014] Preferably, a guide wheel is provided between the negative pressure adsorption chassis and the bag film closing welding module, and the outer circumferential surface of the guide wheel is in contact with the side of the bag film away from the suction port of the vacuum negative pressure discharge component.

[0015] Beneficial effects of the present invention:

[0016] 1. In the present invention, a scraper is arranged in the negative pressure adsorption chassis, and the scraper is attached to the side of the bag film away from the suction port of the vacuum negative pressure discharge component, so that the particles intercepted by the away side of the bag film are scraped off, and the scraped particles slide along the material discharge path of the scraper, the elastic connecting film, the vibration plate, and the carrier frame, and the vibration process of the vibration plate and the elastic connecting film in the material discharge path prevents the particles from being retained, ensuring that the scraped particles are completely sucked into the negative pressure area and discharged, so as to achieve efficient removal of the adsorbed particles on the bag film, thereby avoiding the problem of incomplete collection of the particles due to interception by the away side when the bag film passes through the negative pressure adsorption chassis;

[0017] 2. In the present invention, a longitudinal elastic connector and a transverse elastic connector are fixedly installed in different directions in the carrier, and the moving direction of the movable end of the longitudinal elastic connector is perpendicular to the inclined plane of the vibration plate, thereby ensuring that the vibration plate has a movable space in the direction perpendicular to the material discharge path, and the moving direction of the movable end of the transverse elastic connector is parallel to the inclined plane of the vibration plate, thereby ensuring that the vibration plate also has a movable space in the direction parallel to the material discharge path. Such an arrangement makes the vibration rebound of the vibration plate not limited to a single direction, making it more difficult for the scraped particles on it to adhere to the surface of the vibration plate, thereby being completely discharged into the negative pressure area;

[0018] 3. In the present invention, the upper and lower pieces of bag film are guided to the bag film closing welding module for welding through the guiding effect of the guide wheel, and the guide wheel is arranged at the side close to the bag film away from the suction port of the vacuum negative pressure discharge component, so that the side of the bag film close to the suction port of the vacuum negative pressure discharge component can be used as the inner surface of the bag, and the side of the bag film away from the suction port can be used as the outside of the bag. In this way, even if the particles on the side of the bag film away from the suction port are not completely removed, it is convenient to perform a secondary electrostatic removal operation on the outside of the bag in the subsequent processing of the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2It is a structural schematic diagram of the negative pressure adsorption chassis in the present invention;

[0022] Figure 3 It is a schematic diagram of the airflow direction in the negative pressure adsorption chassis of the present invention;

[0023] Figure 4 The present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0024] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a negative pressure adsorption chassis in the present invention;

[0025] Figure 6 It is a structural schematic diagram of the carrier frame in the present invention;

[0026] Figure 7 It is a schematic diagram of the connection structure between the support frame and the vibration plate in the present invention;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the vibration plate and the moving plate in the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the movable plate in the present invention;

[0029] Fig.10 It is a structural schematic diagram of the rotating wheel in the present invention.

[0030] In the figure: 1. bag film conveying module; 2. deviation correction module; 3. high-voltage discharge module; 4. negative pressure adsorption chassis; 401. front area; 402. departure area; 403. negative pressure area; 5. vacuum negative pressure discharge component; 6. bag film closing welding module; 7. guide wheel; 8. first guide roller; 9. second guide roller; 10. scraper; 1001. buffer pad; 11. carrier frame; 12. longitudinal elastic connector; 13. transverse elastic connector; 14. vibration plate; 1401. round rod; 15. moving plate; 1501. semicircular protrusion; 16. connecting plate; 1601. waist-shaped groove; 17. rotating wheel; 1701. linkage block; 18. elastic connecting strip; 19. elastic connecting film; 20. abutment wheel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0032] See also Figure 1-Figure 10As shown, the present invention is a system for eliminating static electricity of microparticles for producing and processing PCV film bags for blood transfusion and infusion systems, comprising two groups of bag film conveying modules 1, a deviation correction module 2, a high-voltage discharge module 3, a negative pressure adsorption chassis 4 and a bag film closing welding module 6 installed on the bag film conveying path on the equipment frame, the two groups of bag film conveying modules 1 respectively convey a bag film through the deviation correction module 2, the high-voltage discharge module 3, the negative pressure adsorption chassis 4 and the bag film closing welding module 6 in sequence, the bag film closing welding module 6 welds the two bag films into bags, the negative pressure adsorption chassis 4 is connected to the vacuum negative pressure discharge component 5, the interior of which is divided into a front area 401 and a departure area 402 by the bag film, the departure area 402 and the suction port of the vacuum negative pressure discharge component 5 are separated by a bag film, there is a channel between the edge of the bag film and the inner wall of the negative pressure adsorption chassis 4, the departure area 402 is connected to the front area 401 through the channel, a negative pressure area 403 is provided in the departure area 402, and the negative pressure area 403 is connected to the vacuum negative pressure discharge component 5, and the outlet end of the negative pressure adsorption chassis 4 is rotatably installed with a first guide roller 8 and a second guide roller 9 for conveying the bag film. The first guide roller 8 and the second guide roller 9 are driven to rotate by a driving source, and the rotation directions of the two are opposite. A carrier frame 11 is fixedly installed in the negative pressure adsorption chassis 4, and the carrier frame 11 is located in the departure area 402. The carrier frame 11 is arranged obliquely, and a scraper 10 is provided at one end thereof, and the other end thereof is located in the negative pressure area 403. The horizontal height of the scraper 10 is higher than the horizontal height of the negative pressure area 403, and the scraper 10 abuts against the bag film. A vibration plate 14 is connected to the carrier frame 11 through an elastic component, and the edges of the vibration plate 14 are connected to the carrier frame 11 through an elastic connecting membrane 19, and it is driven to vibrate by the vibration component, and the vibration component is connected to the second guide roller 9. The scraper 10, the carrier frame 11, the vibration plate 14 and the elastic connecting membrane 19 are all located on the same inclined plane.

[0033] In one case of this embodiment, the driving source may be a servo motor, a servo motor or other components, or other mechanisms capable of realizing rotational motion. This embodiment is not specifically limited here. It should be noted that the bag film conveying module 1, the deviation correction module 2, the high-voltage discharge module 3, the vacuum negative pressure discharge component 5 and the bag film closing welding module 6 described in the present invention are all prior arts, and the present invention does not improve them. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, which does not affect the integrity of the present invention.

[0034] In actual application of this embodiment, the bag film is transported by the bag film conveying module 1 and passes through the correction module 2, the high-voltage discharge module 3, the negative pressure adsorption chassis 4 and the bag film closing welding module 6 in sequence, wherein the correction module 2 adjusts the position of the bag film, and the high-voltage discharge module 3 generates an electrostatic field, which eliminates the static electricity on the surface of the bag film when the bag film passes through, so that the particles adsorbed on the surface of the bag film are desorbed, and then the bag film enters the negative pressure adsorption chassis 4, and the desorbed particles are absorbed in the negative pressure adsorption chassis 4, and the particles are discharged through the vacuum negative pressure discharge component 5. Finally, the bag film after electrostatic dust removal is bonded through the bag film closing welding module 6 and welded to form a bag.

[0035] like Figure 3 As shown in the example, the first guide roller 8 and the second guide roller 9 convey the bag film at the outlet end, so as to maintain the tension of the bag film in the negative pressure adsorption chassis 4, and avoid the problem of the bag film being offset under the action of the suction of the vacuum negative pressure discharge component 5. The bag film that has just entered the negative pressure adsorption chassis 4 has one side facing the front area 401, that is, facing the suction port of the vacuum negative pressure discharge component 5, and the other side facing the departure area 402, that is, away from the suction port of the vacuum negative pressure discharge component 5. This will cause the particles floating in the front area 401 to be directly sucked away by the vacuum negative pressure discharge component 5, and a part of the particles in the departure area 402 can move to the front area 401 through the cavity, and another part will be intercepted by the bag film. The scraper 10 is in contact with the bag film. When the bag film moves downward, the particles intercepted by the bag film will be scraped off by the scraper 10, so that there is no particle adsorption on both sides of the bag film after being scraped by the scraper 10.

[0036] After the particles are scraped off by the scraper 10, they will slide onto the carrier 11, the vibration plate 14 and the elastic connecting membrane 19, and will eventually be sucked into the negative pressure area 403 and discharged into the vacuum negative pressure discharge component 5. When the second guide roller 9 rotates the conveying bag film, it will also drive the vibration plate 14 on the carrier 11 to vibrate through the vibration component. The main effect of the vibration here is to bounce the particles on the vibration plate 14 so that they can be captured by the wind sucked into the negative pressure area 403, preventing the particles from being retained on the vibration plate 14. When the vibration plate 14 vibrates, the characteristics of the elastic connecting membrane 19 will also expand and contract accordingly. On the one hand, it ensures that the particles can slide along the inclined plane. On the other hand, the rebound of the elastic connecting membrane 19 can also prevent the particles from being retained, thereby ensuring that the particles scraped off by the scraper 10 are completely sucked into the negative pressure area 403.

[0037] By arranging a scraper 10 in the negative pressure adsorption chassis 4, the scraper 10 is in contact with the side of the bag film facing away from the suction port of the vacuum negative pressure discharge component 5, so that the particles intercepted by the facing side of the bag film are scraped off, and the scraped particles slide along the discharge path of the scraper 10, the elastic connecting membrane 19, the vibration plate 14, and the supporting frame 11. The vibration process of the vibration plate 14 and the elastic connecting membrane 19 in the discharge path avoids the retention of particles, ensuring that the scraped particles are completely sucked into the negative pressure zone 403 and discharged, thereby achieving efficient removal of the adsorbed particles on the bag film, thereby avoiding the problem of incomplete collection of particles due to interception by the facing side when the bag film passes through the negative pressure adsorption chassis 4.

[0038] like Figure 5-Figure 8 As shown, as a preferred embodiment of the present invention, the vibration component includes a round rod 1401, a movable plate 15 and a transmission component, a plurality of round rods 1401 arranged at equal intervals are fixedly installed on the bottom surface of the vibration plate 14, the movable plate 15 is slidably arranged in the negative pressure adsorption chassis 4, it is always parallel to the vibration plate 14, and a plurality of semicircular protrusions 1501 are fixedly installed on one side close to the vibration plate 14, the semicircular protrusions 1501 are abutted and matched with the round rod 1401, and there is a round rod 1401 between two adjacent semicircular protrusions 1501, and the second guide roller 9 drives the movable plate 15 to reciprocate through the transmission assembly.

[0039] In actual application of this embodiment, when the second guide roller 9 rotates, it drives the moving plate 15 to reciprocate through the transmission assembly, and the moving plate 15 is always parallel to the vibration plate 14, which means that the moving direction of the moving plate 15 is to reciprocate along its inclined plane, and during the movement of the moving plate 15, the contact position of the semicircular protrusion 1501 thereon and the round rod 1401 will continuously change, such as Figure 8 Taking the shown example, from the cross-section, there is an angle between the line connecting the center of the semicircular protrusion 1501 and the center of the round rod 1401 and the inclined plane of the movable plate 15. When the movable plate 15 moves, from the cross-section, there is a moment when the line connecting the center of the semicircular protrusion 1501 and the center of the round rod 1401 is perpendicular to the inclined plane of the movable plate 15. The reciprocating movement of the movable plate 15 causes the above two situations to switch continuously, so that the vibration plate 14 reciprocates slightly in a direction perpendicular to the discharge path, thereby realizing the vibration of the vibration plate 14 in the discharge path.

[0040] like Figure 6-Figure 7 As shown, as a preferred embodiment of the present invention, the elastic component includes a longitudinal elastic connector 12 and a transverse elastic connector 13, and a plurality of longitudinal elastic connectors 12 and transverse elastic connectors 13 are arranged at the connection between the vibration plate 14 and the carrier frame 11. The moving direction of the active end of the longitudinal elastic connector 12 is perpendicular to the inclined plane of the vibration plate 14, and the moving direction of the active end of the transverse elastic connector 13 is parallel to the inclined plane of the vibration plate 14.

[0041] In one case of this embodiment, the longitudinal elastic connector 12 and the transverse elastic connector 13 may both be springs, telescopic rods with springs and the like, which are not specifically limited in this embodiment.

[0042] In actual application, the present embodiment is provided with a longitudinal elastic connector 12 and a transverse elastic connector 13 fixedly installed in different directions in the carrier frame 11, and the moving direction of the movable end of the longitudinal elastic connector 12 is perpendicular to the inclined plane of the vibration plate 14, thereby ensuring that the vibration plate 14 has a movable space in a direction perpendicular to the material discharge path, and the moving direction of the movable end of the transverse elastic connector 13 is parallel to the inclined plane of the vibration plate 14, thereby ensuring that the vibration plate 14 also has a movable space in a direction parallel to the material discharge path, that is, when the movable plate 15 moves back and forth, the semicircular protrusion 1501 and the extruded round rod 1401 cause the round rod 1401 to move in parallel to the material discharge path. Such an arrangement makes the vibration rebound of the vibration plate 14 not limited to a single direction, so that the particles scraped off it are more difficult to adhere to the surface of the vibration plate 14, thereby being completely discharged into the negative pressure zone 403.

[0043] like Figure 9-10 As shown, as a preferred embodiment of the present invention, the transmission assembly includes a connecting plate 16 and a rotating wheel 17. The connecting plate 16 is slidably installed on the inner wall of the negative pressure adsorption chassis 4. It is fixedly connected to the movable plate 15, and a waist-shaped groove 1601 is opened on it. The waist-shaped groove 1601 is perpendicular to the inclined plane of the movable plate 15. The rotating wheel 17 is rotatably installed in the negative pressure adsorption chassis 4. It is connected to the rotating shaft of the second guide roller 9 through a synchronous belt, and a linkage block 1701 is eccentrically installed on it. The linkage block 1701 is slidably connected to the waist-shaped groove 1601.

[0044] In actual application of this embodiment, when the second guide roller 9 rotates, its rotating shaft drives the rotating wheel 17 to rotate synchronously through the synchronous belt, and the position of the linkage block 1701 in the waist-shaped groove 1601 will also change continuously, so that the connecting plate 16 can reciprocate along its sliding direction, and the connecting plate 16 can drive the movable plate 15 to move, so that the movable plate 15 can move back and forth, so that the vibration plate 14 vibrates, and the second guide roller 9 is in the state of conveying bag film when rotating, that is, it ensures that during the bag film conveying process, the vibration plate 14 is always in a vibrating state, so that the particles scraped off by the scraper 10 can be continuously discharged smoothly on the discharge path.

[0045] like Figure 3-Figure 5 As shown, as a preferred embodiment of the present invention, an abutment wheel 20 is rotatably installed in the negative pressure adsorption chassis 4 , and the scraper 10 abuts the bag film against the abutment wheel 20 .

[0046] In actual application of this embodiment, the scraper 10 can abut the bag film against the abutment wheel 20, and the abutment wheel 20 can play a supporting role to ensure that the scraper 10 is always in close contact with the bag film, avoiding the problem of lateral movement of the bag film due to larger particles, resulting in the particles being unable to be scraped off, and the abutment wheel 20 is a rotatable connection, and its contact with the bag film generates rolling friction, and its resistance is relatively small.

[0047] like Figure 4 As shown, as a preferred embodiment of the present invention, the diameter of the rotating shaft of the abutment wheel 20 is much smaller than the diameter of the abutment wheel 20, and its width is equal to the width of the bag film.

[0048] In actual application of this embodiment, since the abutting wheel 20 is in close contact with the bag film, that is, the gap between the abutting wheel 20 and the scraper 10 is extremely small, when the airflow carries the particles in the diverging area 402 to move toward the front area 401 in the connecting area between the front area 401 and the diverging area 402, it is easy for the airflow to flow back to the bottom of the scraper 10 when passing through the extremely small gap between the abutting wheel 20 and the scraper 10. Figure 4 As shown in the example, the preset width of the abutment wheel 20 is consistent with the width of the bag film, while the diameter of the rotating shaft of the abutment wheel 20 is much smaller than the diameter of the abutment wheel 20, ensuring that in the connecting area between the front area 401 and the back area 402, there is a large gap between the scraper 10 and the rotating shaft of the abutment wheel 20, so that the airflow carrying the particles flows as shown in the figure, avoiding backflow to the bottom of the scraper 10.

[0049] like Figure 4 As shown, as a preferred embodiment of the present invention, both ends of the scraper 10 are fixedly connected to the inner wall of the negative pressure adsorption chassis 4, and a buffer pad 1001 and an elastic connecting strip 18 are provided at the connection between the scraper 10 and the supporting frame 11, and the scraper 10, the elastic connecting strip 18, the supporting frame 11, the vibration plate 14 and the elastic connecting membrane 19 are all located on the same inclined plane.

[0050] In actual application of this embodiment, since the vibration plate 14 also vibrates and rebounds in parallel with the feeding path, the impact force of the vibration is transmitted to the supporting frame 11, which will cause the scraper 10 to be impacted. A buffer pad 1001 and an elastic connecting strip 18 are provided at the connection between the supporting frame 11 and the scraper 10, wherein the buffer pad 1001 can effectively absorb the impact and ensure that the scraper 10 is always tightly fitted with the bag film, and the elastic connecting strip 18 ensures that during the vibration process, the feeding path for the particles always exists.

[0051] like Figure 1 As shown, as a preferred embodiment of the present invention, a guide wheel 7 is arranged between the negative pressure adsorption chassis 4 and the bag film closing welding module 6, and the outer cylindrical surface of the guide wheel 7 is in contact with the side of the bag film away from the suction port of the vacuum negative pressure discharge component 5.

[0052] In actual application of this embodiment, the upper and lower pieces of bag film are guided to the bag film closing welding module 6 for welding through the guiding effect of the guide wheel 7, and the guide wheel 7 is arranged at the side close to the bag film away from the suction port of the vacuum negative pressure discharge component 5, so that the side of the bag film close to the suction port of the vacuum negative pressure discharge component 5 can be used as the inner surface of the bag, and the side of the bag film away from the suction port can be used as the outside of the bag. In this way, even if the particles on the side of the bag film away from the suction port are not completely removed, it is convenient to perform secondary electrostatic removal of particles on the outside of the bag in the subsequent processing of the bag.

[0053] Working principle of the present invention: The above embodiment of the present invention provides a system for eliminating static electricity of microparticles in the production and processing of PCV film bags for blood transfusion and infusion systems, wherein the bag film is transported by the bag film transporting module 1 and sequentially passes through the deviation correction module 2, the high-voltage discharge module 3, the negative pressure adsorption chassis 4 and the bag film closing welding module 6, wherein the deviation correction module 2 adjusts the position of the bag film, and the high-voltage discharge module 3 generates an electrostatic field, which eliminates the static electricity on the surface of the bag film when the bag film passes through, so that the microparticles adsorbed on the surface of the bag film are desorbed, and then the bag film enters the negative pressure adsorption chassis 4, and the desorbed microparticles are absorbed in the negative pressure adsorption chassis 4, and the microparticles are discharged through the vacuum negative pressure discharge component 5, and finally the bag film after electrostatic dust removal passes through the bag film closing welding module 6. The two parts are fitted and welded to form a bag, and the bag film that has just entered the negative pressure adsorption chassis 4 has one side facing the front area 401, that is, facing the suction port of the vacuum negative pressure discharge component 5, and the other side facing the departure area 402, that is, away from the suction port of the vacuum negative pressure discharge component 5. This will cause the particles floating in the front area 401 to be directly sucked away by the vacuum negative pressure discharge component 5, and a part of the particles in the departure area 402 can move to the front area 401 through the cavity, and a part of them will be intercepted by the bag film, and the scraper 10 is in contact with the bag film. When the bag film moves downward, the particles intercepted by the bag film will be scraped off by the scraper 10, so that there is no particle adsorption on both sides of the bag film after being scraped by the scraper 10.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A system for producing and processing microparticle static electricity elimination of PCV film bags for blood transfusion and infusion systems, characterized in that: The invention comprises two groups of bag film conveying modules (1), a deviation correction module (2), a high-voltage discharge module (3), a negative pressure adsorption chassis (4) and a bag film closing welding module (6) installed on a bag film conveying path on an equipment frame. The two groups of bag film conveying modules (1) respectively convey a piece of bag film to pass through the deviation correction module (2), the high-voltage discharge module (3), the negative pressure adsorption chassis (4) and the bag film closing welding module (6) in sequence. The bag film closing welding module (6) welds two pieces of bag film into a bag. The negative pressure adsorption chassis (4) is connected to the vacuum negative pressure discharge component (5), and its interior is divided into a front area (401) and a back area (402) by a bag film. The back area (402) and the suction port of the vacuum negative pressure discharge component (5) are separated by a bag film. A channel exists between the edge of the bag film and the inner wall of the negative pressure adsorption chassis (4). The back area (402) is connected to the front area (401) through the channel. A negative pressure area (403) is provided in the back area (402), and the negative pressure area (403) is connected to the vacuum negative pressure discharge component (5). The outlet end of the negative pressure adsorption chassis (4) is rotatably mounted with a first guide roller (8) and a second guide roller (9) for conveying the bag film. The first guide roller (8) and the second guide roller (9) are driven to rotate by a driving source, and the rotation directions of the first guide roller (8) and the second guide roller (9) are opposite. A support frame (11) is fixedly mounted in the negative pressure adsorption chassis (4). The support frame (11) is located in the departure area (402). The support frame (11) is arranged obliquely, and a scraper (10) is provided at one end thereof, and the other end thereof is located in the negative pressure area (403). The scraper (10) is located above the negative pressure zone (403), and the scraper (10) is in contact with the bag film. The support frame (11) is connected to a vibration plate (14) via an elastic component. The edges of the vibration plate (14) are connected to the support frame (11) via an elastic connection membrane (19), and the vibration plate (14) is driven to vibrate by the vibration component. The vibration component is connected to the second guide roller (9). The scraper (10), the support frame (11), the vibration plate (14) and the elastic connection membrane (19) are all located on the same inclined plane.

2. According to claim 1, a system for producing and processing microparticle static elimination of PCV film bags for blood transfusion and infusion systems, characterized in that: The vibration component comprises a round rod (1401), a movable plate (15) and a transmission component. A plurality of round rods (1401) arranged at equal intervals are fixedly mounted on the bottom surface of the vibration plate (14). The movable plate (15) is slidably arranged in the negative pressure adsorption chassis (4). The movable plate (15) is always parallel to the vibration plate (14), and a plurality of semicircular protrusions (1501) are fixedly mounted on a side close to the vibration plate (14). The semicircular protrusions (1501) are in abutment with the round rods (1401), and a round rod (1401) is located between two adjacent semicircular protrusions (1501). The second guide roller (9) drives the movable plate (15) to move back and forth through the transmission component.

3. According to claim 2, a system for producing and processing microparticle static elimination of PCV film bags for blood transfusion and infusion systems, characterized in that: The elastic component comprises a longitudinal elastic connector (12) and a transverse elastic connector (13). The plurality of longitudinal elastic connectors (12) and transverse elastic connectors (13) are arranged at the connection between the vibration plate (14) and the support frame (11). The moving direction of the active end of the longitudinal elastic connector (12) is perpendicular to the inclined plane of the vibration plate (14), and the moving direction of the active end of the transverse elastic connector (13) is parallel to the inclined plane of the vibration plate (14).

4. According to claim 2, a system for producing and processing microparticle static elimination of PCV film bags for blood transfusion and infusion systems, characterized in that: The transmission assembly comprises a connecting plate (16) and a rotating wheel (17). The connecting plate (16) is slidably mounted on the inner wall of the negative pressure adsorption chassis (4). The connecting plate (16) is fixedly connected to the movable plate (15) and is provided with a waist-shaped groove (1601). The waist-shaped groove (1601) is perpendicular to the inclined plane of the movable plate (15). The rotating wheel (17) is rotatably mounted in the negative pressure adsorption chassis (4). The rotating wheel (17) is transmission-connected to the rotating shaft of the second guide roller (9) via a synchronous belt and is eccentrically mounted with a linkage block (1701). The linkage block (1701) is slidably connected to the waist-shaped groove (1601).

5. The microparticle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems according to claim 1 is characterized in that: An abutment wheel (20) is rotatably mounted in the negative pressure adsorption chassis (4), and the scraper (10) abuts the bag film against the abutment wheel (20).

6. The microparticle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems according to claim 5 is characterized in that: The diameter of the rotating shaft of the abutment wheel (20) is smaller than the diameter of the abutment wheel (20), and its width is equal to the width of the bag film.

7. The microparticle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems according to claim 1 is characterized in that: The two ends of the scraper (10) are fixedly connected to the inner wall of the negative pressure adsorption chassis (4), and a buffer pad (1001) and an elastic connecting strip (18) are provided at the connection between the scraper (10) and the supporting frame (11). The scraper (10), the elastic connecting strip (18), the supporting frame (11), the vibration plate (14) and the elastic connecting membrane (19) are all located on the same inclined plane.

8. The microparticle static elimination system for producing and processing PCV film bags for blood transfusion and infusion systems according to claim 1 is characterized in that: A guide wheel (7) is provided between the negative pressure adsorption chassis (4) and the bag film closing welding module (6), and the outer circumferential surface of the guide wheel (7) is in contact with a side of the bag film away from the suction port of the vacuum negative pressure discharge assembly (5).

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