A closed single-injection device with mixing function for a blood cell analyzer

Abstract

The utility model discloses a blood cell analyzer closed single sampling device with mixing function, including base and being located in the turnover seat of base, the turnover seat lower extreme portion is equipped with turnover half gear, both sides outer walls of turnover seat lower extreme are equipped with first bearing, and the first bearing is equipped with turnover shaft on the sleeve, and the base one side board outer wall is equipped with motor, and the motor output shaft end portion is equipped with turnover gear, and turnover gear is engaged with turnover half gear, and this side board outer wall is equipped with electromagnet and first travel switch still, and first travel switch is inserted into the base, and the inside wall of this side board is equipped with second travel switch and photoelectric coupling, and the turnover seat upper abuts with the turnover seat outer veneer support of turnover shaft connection, and the turnover seat outer veneer support is equipped with second bearing, and the base is equipped with the limit board with circular arc opening still. This device contains vacuum blood collection tube's sample mixing and closed sampling function, and the safety is high, and the automation degree of equipment has been improved, reduces the test difference that manual sample mixing brought, reduces the labor intensity of user.

Description

Technical Field

[0001] This utility model relates to auxiliary equipment for a blood cell analyzer, specifically a closed single-injection device for a blood cell analyzer with a mixing function. Background Technology

[0002] Because blood is a suspension, blood cells will separate from serum and precipitate at the bottom of the test tube after prolonged standing. Direct sampling will cause inaccurate counting by the blood cell analyzer. Therefore, thorough mixing is generally required before sampling and counting. Large fully automated sample injection systems are usually equipped with a dedicated homogenizing robotic arm to homogenize the routine samples arranged in rows on the test tube rack. However, the emergency sampling station of large fully automated sample injection systems, due to its lower usage frequency, previously lacked automatic mixing functions. Operators had to manually mix the blood sample in the vacuum blood collection tube before placing it into the emergency sampling station for analysis. Small, non-fully automated sample injection systems, due to space, cost, and usage frequency constraints, also lack an in-machine mixing structure. Operators must manually mix the sample before placing it into the instrument for testing.

[0003] Whether manual mixing can achieve thorough mixing depends entirely on the operator's skill and the time spent. With increasing laboratory quality control requirements and operators' expectations for improved equipment automation to reduce labor intensity, the integration of mixing mechanisms for single-injection samples into instruments is becoming a trend.

[0004] Large instruments, due to ample space, typically include a mixing station. A robotic arm transfers emergency samples from the sampling station to the mixing station for mixing before returning to the sampling station. Alternatively, the mixing structure can be integrated into the robotic arm to lift the emergency sample from the injection station for mixing. However, both of these approaches require additional mixing and transfer structures, placing significant demands on the instrument's cost, space, and complexity. Smaller instruments, due to space and cost constraints, find it difficult to achieve in-machine mixing using these methods.

[0005] Some existing patents employ mixing devices, such as CN202410376544.1, a clamping test tube shaking mixing structure device. However, this device can only mix samples arranged in rows on a test tube rack, and requires a robotic arm to separate the vacuum blood collection tube from the test tube rack for mixing elsewhere. It cannot mix vacuum blood collection tubes in emergency sample injection positions. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by proposing a closed single-sample device for a blood cell analyzer with a mixing function. This device includes sample mixing and closed sampling functions for vacuum blood collection tubes. While ensuring user safety, it improves the automation level of the equipment, reduces test variations caused by manual sample mixing, and lowers the user's workload.

[0007] The technical solution to achieve the purpose of this utility model is: A closed single-injection device for a blood cell analyzer with mixing function includes a hollow base with an opening on the side and a tilting seat disposed within the base. A top plate is provided on the top of the base. An embedded tilting half-gear is provided at the lower end of the tilting seat. First bearings are provided on both outer walls of the lower end of the tilting seat. A tilting shaft is mounted on each of the first bearings. The tilting shaft passes through the first bearings, the tilting seat, and the center of the tilting half-gear, allowing the tilting seat to disengage or be pushed into the base through the side opening. The two ends of the tilting shaft are connected to the two side plates of the base, respectively. A motor with a motor bracket is provided on the outer wall of one side plate of the base. A tilting gear is provided at the end of the motor output shaft that passes through the side plate. The tilting gear is located below and meshes with the tilting half-gear. The outer wall of the side plate also provides an electromagnet with an electromagnet bracket and a first limit switch with a first limit switch bracket. The first limit switch... The switch extends into the base through a slot provided in the side plate. The inner wall of the side plate is provided with a second limit switch with a second limit switch bracket and an optocoupler with an optocoupler bracket. The second limit switch and the optocoupler are located at the lower end of the inner wall of the side plate. The flip seat facing the side opening of the base is abutted against a flip seat outer trim bracket connected to the flip shaft. The flip seat outer trim bracket is provided with a support column, a locking hole and a limit switch pressure plate. The flip seat is provided with a vacuum blood collection tube hole, a magnet, an optocoupler baffle and a detection hole. The vacuum blood collection tube hole and the detection hole are connected. The support column is magnetically connected to the magnet. The locking hole is close to the electromagnet. The limit switch pressure plate is close to the first limit switch. The optocoupler baffle and the detection hole are on the same side and located on the opposite side of the magnet on the flip seat. The base is also provided with a limiting plate with an arc-shaped opening that limits the sliding out of the vacuum blood collection tube in the vacuum blood collection tube hole. The motor, optocoupler, electromagnet, first limit switch, and second limit switch are all externally connected to the control system of the blood cell analyzer.

[0008] The outer trim bracket of the flip seat includes a vertical plate in the same direction as the flip seat, a horizontal plate at the lower end of the vertical plate that is perpendicular to the vertical plate and faces the flip seat, a limit switch pressure plate at the upper end of the horizontal plate away from the vertical plate that faces the first limit switch, a second bearing on the horizontal plate, a flip shaft passing through the second bearing, and the second bearing being used to limit the rotation of the outer trim bracket of the flip seat around the flip shaft.

[0009] When the support column is attracted to the magnet, and the flip seat along with the outer trim bracket of the flip seat is pushed into the base without a vacuum blood collection tube being inserted into the vacuum blood collection tube hole, the limit switch pressure plate triggers the first limit switch. The slide rod of the electromagnet extends into the locking hole to lock the outer trim bracket of the flip seat. Then, the control system controls the motor to reverse, and the flip gear drives the flip half gear and the flip seat to flip backward. The magnet on the flip seat separates from the support column, and the flip seat continues to flip backward to the limit position. The optocoupler baffle triggers the optocoupler, and the control system controls the motor to stop rotating. Because no vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the second limit switch enters the flip seat from the detection hole. However, since there is no vacuum blood collection tube in the flip seat, the second limit switch cannot be pressed down, so the second limit switch is not triggered. The control system controls the motor to rotate forward, and the flip gear drives the flip half gear and the flip seat to rotate backward, ending this sample injection.

[0010] When the support column is attracted to the magnet, and the flip seat, along with its outer decorative panel bracket, is pushed into the base and a vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the limit switch pressure plate triggers the first limit switch. The electromagnet's slide rod extends into the locking hole to lock the flip seat's outer decorative panel bracket. Then, the control system controls the motor to reverse, and the flip gear drives the flip half gear and the flip seat to flip backward. The magnet on the flip seat separates from the support column, and the flip seat continues to flip backward to its limit position. The optocoupler baffle triggers the optocoupler, and the control system controls the motor to stop rotating. Because a vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the second limit switch enters the flip seat from the detection hole. The presence of a vacuum blood collection tube inside the flip seat presses down the second limit switch, causing the second limit switch to activate. When the switch is triggered, the control system controls the motor to rotate. The flip gear drives the flip half gear and the flip seat to rotate back and forth until the sample in the vacuum blood collection tube is inverted and mixed. The control system then controls the motor to rotate forward, and the flip gear drives the flip half gear and the flip seat to rotate backward. The magnet attracts the support column, and the external sampling needle is inserted into the vacuum blood collection tube through the opening in the top plate to collect the sample. After the external sampling needle finishes sampling and is withdrawn, the control system controls the electromagnet to be energized. The electromagnet's slide rod exits the locking hole, releasing the outer trim bracket of the flip seat. At the same time, the control system controls the motor to rotate forward, and the flip seat and the outer trim bracket of the flip seat detach from the side opening of the base, removing the vacuum blood collection tube and ending the current sample injection.

[0011] The support column and the magnet were not attracted to each other. Only the flip seat was pushed into the base. The limit switch pressure plate did not trigger the first limit switch, thus ending the current sample injection.

[0012] After the outer trim bracket of the flip seat is dislodged from the opening on the side of the base, the limit switch pressure plate abuts against the slot of the side plate of the base to limit the dislodging of the outer trim bracket of the flip seat.

[0013] The center point of the opening in the top plate is located on the vertical axis of the vacuum blood collection tube hole of the flip seat.

[0014] The center of the arc-shaped opening of the limiting plate is located on the axis of the flipping shaft.

[0015] The support column is made of ferromagnetic material.

[0016] The outer trim bracket of the flip seat is rotatably connected to the flip shaft.

[0017] The outer walls of the two side plates at the lower end of the flip seat are provided with first bearing holes. The first bearing is installed in the first bearing hole. The horizontal plate of the outer trim panel bracket of the flip seat is provided with second bearing holes. The second bearing is fitted on the second bearing hole. The flip shaft passes through the second bearing, the first bearing on one side of the flip seat, the flip seat, the flip half gear and the first bearing on the other side of the flip seat in sequence. The two ends of the flip shaft are then connected to the two side plates of the base respectively.

[0018] Workflow: a. The control system energizes the electromagnet to release the locking state of the outer trim bracket of the flip seat. The motor rotates forward a certain number of steps, driving the flip half gear to rotate through the flip gear, thereby causing the flip seat to flip forward and open. At this time, the outer trim bracket of the flip seat is attracted to the magnet on the front side of the flip seat by the support, and flips forward and opens together with the flip seat. When the designated position is reached, the motor stops and maintains the semi-locked state to ensure that the flip seat is in the open position; b. After inserting the vacuum blood collection tube into the vacuum blood collection tube hole of the flip seat, the control system controls the motor to reverse, and drives the flip seat to flip back to the closed state through the flip gear and the flip half gear. The outer panel bracket of the flip seat is attracted to the magnet through the support column and flips back to the closed state together with the flip seat. c. When the flip seat reaches the fully upright closed state, the flip seat outer trim bracket is also fully upright. At this time, the locking hole is aligned with the electromagnet's slide rod. The slide rod enters the locking hole under the action of its own spring, locking the flip seat outer trim bracket in the closed state. At the same time, the limit switch pressure plate presses down the first limit switch, and the control system enters the next operation. If the flip seat outer trim bracket does not return to the upright position with the flip seat for any reason, and the first limit switch is not pressed down to trigger, the process terminates, and the control system issues a warning requiring the user to manually close the flip seat outer trim bracket. d. After the control system detects that the outer panel support of the flip seat is closed, it issues a mixing command. The motor reverses, and the flip seat, carrying the vacuum blood collection tube, continues to flip backward. The flipping torque of the flip seat exceeds the attraction force of the magnet and separates from the outer panel support. Due to the limit of the electromagnet, the outer panel support of the flip seat remains upright. The flip seat swings backward to its rear limit position. At this time, the optocoupler baffle installed on the flip seat triggers the optocoupler, informing the control system that the flip seat has reached its rear limit position. The motor stops, and at the same time, the vacuum blood collection tube inside the flip seat is pressed down and triggers the second limit switch entering the detection hole, informing the control system that there is a vacuum blood collection tube inside the flip seat. If there is no vacuum blood collection tube inside the flip seat at this time, the second limit switch is not triggered, and the process terminates after the flip seat returns to the upright position. e. The control system detects that there is indeed a vacuum blood collection tube inside the flipping seat, issues a command to continue mixing, and controls the motor to rotate forward to drive the flipping seat to rotate forward at a certain angle and then reverse to the rear limit position. This action is repeated multiple times to ensure that the sample in the vacuum blood collection tube inside the flipping seat is fully inverted and mixed. After the sample is mixed, the motor drives the flipping seat to rotate to a vertical position. The motor locks the position of the flipping seat through a semi-flow lock, and the sampling needle of the blood cell analyzer can be inserted into the vacuum blood collection tube through the opening in the top plate to collect samples. f. After sampling is completed and the sampling needle is withdrawn, the top plate prevents the vacuum blood collection tube from being pulled out by the sampling needle. The control system issues an opening command, the electromagnet is energized to release the locking state of the outer panel bracket of the flipping seat, and the motor rotates forward, driving the flipping seat forward. At this time, the outer panel bracket of the flipping seat is attracted to the magnet on the front side of the flipping seat through the support, and flips forward and opens together with the flipping seat. When it reaches the designated position, the flipping seat completes one action cycle. At this time, the operator can take out the test vacuum blood collection tube, and repeat step af for the next sampling and mixing.

[0019] This device includes sample mixing and closed sampling functions for vacuum blood collection tubes. While ensuring the safety of users, it improves the automation level of the equipment, reduces test differences caused by manual sample mixing, and reduces the labor intensity of users. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of an embodiment; Figure 2 for Figure 1 Rear view; Figure 3 This is a structural diagram of the flip seat in the embodiment; Figure 4 This is a structural diagram without a base in the embodiment; Figure 5 This is a cross-sectional view of the flip seat and a structural diagram of the flip seat outer trim panel bracket in the embodiment; Figure 6 This is a structural diagram of the flip seat and the flip seat outer trim panel bracket extending from the base in the embodiment; Figure 7 This is a structural diagram of the flip seat and the flip seat outer trim bracket being pushed into the base in the embodiment.

[0021] In the diagram, 01 is the base; 02 is the top plate; 03 is the flipping seat; 031 is the vacuum blood collection tube hole; 032 is the detection hole; 04 is the flipping half gear; 05 is the flipping gear; 06 is the motor; 07 is the flipping shaft; 08 is the first bearing; 09 is the flipping seat outer trim bracket; 091 is the support column; 092 is the locking hole; 093 is the limit switch pressure plate; 10 is the magnet; 11 is the electromagnet; 111 is the slide rod; 12 is the first limit switch; 13 is the second limit switch; 14 is the limit plate; 15 is the motor bracket; 16 is the electromagnet bracket; 17 is the first limit switch bracket; 18 is the second limit switch bracket; 19 is the optocoupler; 20 is the optocoupler baffle; 21 is the optocoupler bracket; 22 is the vacuum blood collection tube; and 23 is the second bearing. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Example

[0023] Reference Figures 1-7A closed single-injection device for a blood cell analyzer with mixing function includes a hollow base 01 with an opening on the side and a flip seat 03 disposed within the base 01. A top plate 02 is provided on the top of the base 01. An embedded flip half-gear 04 is provided at the lower end of the flip seat 03. First bearings 08 are provided on both outer walls of the lower end of the flip seat 03. A flip shaft 07 is mounted on the first bearings 08, and the flip shaft 07 passes through the center of the first bearings 08, the flip seat 07, and the flip half-gear 04, allowing the flip seat 03 to pass through the side of the base 01. The opening can be disengaged or pushed into the base 01. The two ends of the flipping shaft 07 are connected to the two side plates of the base 01 respectively. A motor 06 with a motor bracket 15 is provided on the outer wall of one side plate of the base 01. The end of the motor 06 output shaft that passes through the side plate is provided with a flipping gear 05. The flipping gear 05 is located below the flipping half gear 04 and meshes with the flipping half gear 04. The outer wall of the side plate is also provided with an electromagnet 11 with an electromagnet bracket 16 and a first limit switch 12 with a first limit switch bracket 17. The first limit switch 12 passes through the side plate. The provided slot extends into the base 01. The inner wall of the side plate is provided with a second limit switch 13 with a second limit switch bracket 18 and an optocoupler 19 with an optocoupler bracket 21. The second limit switch 13 and optocoupler 19 are located at the lower end of the inner wall of the side plate. The flip base 03 facing the side opening of the base is abutted by a flip base outer trim bracket 09 connected to the flip shaft 07. The flip base outer trim bracket 09 is provided with a support column 091, a locking hole 092 and a limit switch pressure plate 093. The flip base 03 is provided with a vacuum blood collection tube hole 031. The base 01 includes a magnet 10, an optical coupler baffle 20, and a detection hole 032. The vacuum blood collection tube hole 031 is connected to the detection hole 032. The support column 091 is magnetically connected to the magnet 10. The locking hole 092 is close to the electromagnet 11. The limit switch pressure plate 093 is close to the first limit switch 12. The optical coupler baffle 20 and the detection hole 032 are on the same side and located on the opposite surface of the magnet 10 on the flip seat 03. The base 01 is also provided with a limiting plate 14 with an arc-shaped opening that limits the vacuum blood collection tube 22 in the vacuum blood collection tube hole 031 from sliding out. The motor 06, optocoupler 19, electromagnet 11, first limit switch 12 and second limit switch 13 are all externally connected to the control system of the blood cell analyzer.

[0024] like Figure 4 As shown, the outer trim bracket 09 of the flip seat includes a vertical plate in the same direction as the flip seat 03. The lower end of the vertical plate is provided with a horizontal plate perpendicular to the vertical plate and facing the flip seat 03. The upper end of the horizontal plate away from the vertical plate is provided with a limit switch pressure plate 093 facing the first limit switch 12. The horizontal plate is provided with a second bearing 23, and the flip shaft 07 passes through the second bearing 23.

[0025] When the support column 091 is attracted to the magnet 10, and the flip seat 03, together with the flip seat outer trim bracket 09, is pushed into the base 01 without the vacuum blood collection tube 22 inserted into the vacuum blood collection tube hole 031, the limit switch pressure plate 093 triggers the first limit switch 12. The slide rod 111 of the electromagnet 11 extends into the locking hole 092 to lock the flip seat outer trim bracket 09. Then, the control system controls the motor 06 to reverse, and the flip gear 05 drives the flip half gear 04 and the flip seat 03 to flip backward. The magnet 10 on the flip seat 03 separates from the support column 091, and the flip seat is turned. The seat 03 continues to rotate backward to its limit position. The optocoupler baffle 20 triggers the optocoupler 19, and the control system controls the motor 06 to stop rotating. Because no vacuum blood collection tube 22 is placed in the vacuum blood collection tube hole 031, the second limit switch 13 enters the rotating seat 03 from the detection hole 032. However, since there is no vacuum blood collection tube 22 in the rotating seat 03, the second limit switch 13 cannot be pressed down, so the second limit switch 13 is not triggered. The control system controls the motor 06 to rotate forward, and the rotating gear 05 drives the rotating half gear 04 and the rotating seat 03 to rotate back, ending this sample injection.

[0026] The support column 091 is attracted to the magnet 10. When the flip seat 03, together with the outer trim bracket 09 of the flip seat, is pushed into the base 01 and the vacuum blood collection tube 22 is placed in the vacuum blood collection tube hole 031, the limit switch pressure plate 093 triggers the first limit switch 12. The slide rod 111 of the electromagnet 11 extends into the locking hole 092 to lock the flip seat outer trim bracket 09. Then, the control system controls the motor 06 to reverse. The flip gear 05 drives the flip half gear 04 and the flip seat 03 to flip backward. The magnet 10 on the flip seat 03 separates from the support column 091. The flip seat 03 continues to flip backward to the limit position. The optocoupler baffle 20 triggers the optocoupler 19. The control system controls the motor 06 to stop rotating. Because the vacuum blood collection tube 22 is placed in the vacuum blood collection tube hole 031, the second limit switch 13 enters the flip seat 03 from the detection hole 032. The vacuum blood collection tube 22 is placed in the flip seat 03, which presses down the second limit switch. When switch 13 is closed, the second limit switch 13 is triggered, and the control system controls the motor 06 to rotate. The flip gear 05 drives the flip half gear 04 and the flip seat 03 to rotate back and forth until the sample in the vacuum blood collection tube 22 in the vacuum blood collection tube hole 031 is inverted and mixed. The control system controls the motor 06 to rotate forward, and the flip gear 05 drives the flip half gear 04 and the flip seat 03 to rotate backward. The magnet 10 is attracted to the support column 091, and the external sampling needle is inserted into the vacuum blood collection tube 22 through the opening set in the top plate 02 to collect samples. After the external sampling needle finishes sampling and is withdrawn, the control system controls the electromagnet 11 to be energized. The slide rod 111 of the electromagnet 11 exits the locking hole 092, so that the outer trim bracket 09 of the flip seat is unlocked. At the same time, the control system controls the motor 06 to rotate forward, and the flip seat 03 and the outer trim bracket 09 of the flip seat are disengaged from the side opening of the base 01. The vacuum blood collection tube 22 is taken out, and the current sample injection ends.

[0027] The support column 091 and the magnet 10 were not attracted to each other. Only the flip seat 03 was pushed into the base 01. The limit switch plate 093 did not trigger the first limit switch 12, thus ending the current sample injection.

[0028] After the flip seat outer trim bracket 09 is dislodged from the side opening of the base 01, the limit switch pressure plate 093 abuts against the slot of the base side plate to limit the dislodging of the flip seat outer trim bracket 09.

[0029] The center point of the opening in the top plate is located on the vertical axis of the vacuum blood collection tube hole of the flip seat.

[0030] The center of the arc-shaped opening of the limiting plate 14 is located on the axis of the flipping shaft 07.

[0031] The support column 091 is made of ferromagnetic material.

[0032] The outer trim bracket 09 of the flip seat is rotatably connected to the flip shaft 07.

[0033] The outer walls of the two side plates at the lower end of the flip seat 03 are provided with first bearing holes, and the first bearing 08 is installed in the first bearing hole. The horizontal plate of the outer trim bracket 09 of the flip seat is provided with second bearing holes, and the second bearing 23 is fitted on the second bearing hole. The flip shaft 07 passes through the second bearing 23, the first bearing 08 on one side of the flip seat 03, the flip seat 03, the flip half gear 04, and the first bearing 08 on the other side of the flip seat 03 in sequence. The two ends of the flip shaft 07 are then connected to the two side plates of the base 01 respectively.

[0034] Workflow: a. The control system energizes the electromagnet 11 to release the locking state of the outer trim bracket 09 of the flip seat. The motor 06 rotates forward a certain number of steps, driving the flip half gear 04 to rotate through the flip gear 05, thereby causing the flip seat 03 to flip forward and open. At this time, the outer trim bracket 09 of the flip seat is attracted to the magnet 10 on the front side of the flip seat 03 through the support column 091, and flips forward and opens together with the flip seat 03. When the designated position is reached, the motor 06 stops and remains in a semi-locked state, ensuring that the flip seat 03 is in the open position. b. After inserting the vacuum blood collection tube 22 into the vacuum blood collection tube hole 031 of the flipping seat 03, the control system controls the motor 06 to reverse, and drives the flipping seat 03 to flip backward and return to the closed state through the flipping gear 05 and the flipping half gear 04. The outer trim panel bracket 09 of the flipping seat is attracted to the magnet 10 through the support column 091, and flips backward together with the flipping seat 03 to return to the closed state. c. When the flip seat 03 reaches the fully upright closed state, the flip seat outer trim bracket 09 is also fully upright. At this time, the locking hole 092 is aligned with the electromagnet slide rod 111. The slide rod 111 enters the locking hole 092 under the action of its own spring, locking the flip seat outer trim bracket 09 in the closed state. At the same time, the limit switch plate 093 presses down the first limit switch 12, and the control system enters the next operation. If the flip seat outer trim bracket 09 does not return to the upright position with the flip seat 03 for some reason, and the first limit switch 12 is not pressed down to trigger, the process terminates, and the control system issues a warning requiring the user to manually close the flip seat outer trim bracket 09. d. After the control system detects that the outer panel bracket 09 of the flip seat is closed, it issues a mixing command. The motor 06 reverses, and the flip seat 03, carrying the vacuum blood collection tube 22, continues to flip backward. The flipping torque of the flip seat 03 exceeds the attraction force of the magnet 10 and separates from the outer panel bracket 09. The outer panel bracket 09 remains upright due to the limit of the electromagnet 11. The flip seat 03 swings backward to its rear limit position. At this time, the optocoupler baffle 20 installed on the flip seat 03 triggers the optocoupler 19, informing the control system that the flip seat 03 has reached its rear limit position. The motor 06 stops, and at the same time, the vacuum blood collection tube 22 inside the flip seat 03 is pressed down and triggers the second limit switch 13 entering the detection hole 032, informing the control system that there is a vacuum blood collection tube 22 inside the flip seat 03. If there is no vacuum blood collection tube 22 inside the flip seat 03 at this time, the second limit switch 13 is not triggered, and the process terminates after the flip seat 03 returns to the upright position. e. The control system detects that there is indeed a vacuum blood collection tube 22 inside the flip seat 03, issues a command to continue mixing, and controls the motor 06 to rotate forward to drive the flip seat 03 to flip forward at a certain angle and then reverse to the rear limit position. This action is repeated many times to ensure that the sample in the vacuum blood collection tube 22 inside the flip seat 03 is fully inverted and mixed. After the sample is mixed, the motor 06 drives the flip seat 03 to rotate to a vertical position. The motor 06 locks the position of the flip seat 03 through a semi-flow lock. The sampling needle of the blood cell analyzer can be inserted into the vacuum blood collection tube 22 through the opening of the top plate 02 to collect samples. f. After sampling is completed and the sampling needle is withdrawn, the top plate 02 prevents the vacuum blood collection tube 22 from being pulled out by the sampling needle. The control system issues an opening command, the electromagnet 11 is energized to release the locking state of the outer panel bracket 09 of the flipping seat, and the motor 06 rotates forward, driving the flipping seat 03 forward. At this time, the outer panel bracket 09 of the flipping seat is attracted to the magnet 10 on the front side of the flipping seat 03 through the support column 091, and flips forward and opens together with the flipping seat 03. When it reaches the designated position, the flipping seat 03 completes one action cycle. At this time, the operator can take out the test vacuum blood collection tube 22, and repeat step af for the next sampling and mixing.

[0035] In this example, the electromagnet 11 is model number Zongtai SDO-0520S.

[0036] In this example, the first limit switch 12 and the second limit switch 13 have the same specifications, both being Omron SS-5GL2 models.

[0037] In this example, both the first and second bearings are model F105ZZ.

[0038] In this example, motor 06 is a 20-step motor.

Claims

1. A closed single-injection device for a blood cell analyzer with mixing function, comprising a hollow base with an opening on one side and a flip-up seat disposed within the base, the base having a top plate, characterized in that, The lower end of the tilting seat is equipped with an embedded tilting half gear. Both outer walls of the lower end of the tilting seat are provided with first bearings, on which a tilting shaft is mounted. The tilting shaft passes through the first bearings, the tilting seat, and the center of the tilting half gear, allowing the tilting seat to disengage from or be pushed into the base through a side opening. The two ends of the tilting shaft are connected to the two side plates of the base, respectively. A motor with a motor bracket is provided on the outer wall of one side plate of the base. A tilting gear is located at the end of the motor output shaft that passes through the side plate. The tilting gear is located below and meshes with the tilting half gear. The outer wall of the side plate also provides an electromagnet with an electromagnet bracket and a first limit switch with a first limit switch bracket. The first limit switch extends into the base through a slot in the side plate. The inner wall of the side plate is provided with a first limit switch bracket. The second limit switch and the optocoupler with the optocoupler bracket are located at the lower end of the inner wall of the side plate. The flip seat facing the side opening of the base is abutted by the outer decorative panel bracket of the flip seat connected to the flip shaft. The outer decorative panel bracket of the flip seat is provided with a support column, a locking hole and a limit switch pressure plate. The flip seat is provided with a vacuum blood collection tube hole, a magnet, an optocoupler baffle and a detection hole. The vacuum blood collection tube hole and the detection hole are connected. The support column is magnetically connected to the magnet. The locking hole is close to the electromagnet. The limit switch pressure plate is close to the first limit switch. The optocoupler baffle and the detection hole are on the same side and located on the opposite side of the magnet on the flip seat. The base is also provided with a limiting plate with an arc-shaped opening that limits the sliding out of the vacuum blood collection tube in the vacuum blood collection tube hole. The motor, optocoupler, electromagnet, first limit switch, and second limit switch are all externally connected to the control system of the blood cell analyzer.

2. The closed single sample inlet device for a blood cell analyzer with mixing function according to claim 1, wherein, The outer trim bracket of the flip seat includes a vertical plate in the same direction as the flip seat, a horizontal plate at the lower end of the vertical plate that is perpendicular to the vertical plate and faces the flip seat, a limit switch pressure plate at the upper end of the horizontal plate away from the vertical plate that faces the first limit switch, a second bearing on the horizontal plate, and the flip shaft passing through the second bearing.

3. The closed single-injection device for a blood cell analyzer with mixing function according to claim 1, characterized in that, When the support column is attracted to the magnet, and the flip seat along with the outer trim bracket of the flip seat is pushed into the base without a vacuum blood collection tube being inserted into the vacuum blood collection tube hole, the limit switch pressure plate triggers the first limit switch. The slide rod of the electromagnet extends into the locking hole to lock the outer trim bracket of the flip seat. Then, the control system controls the motor to reverse, and the flip gear drives the flip half gear and the flip seat to flip backward. The magnet on the flip seat separates from the support column, and the flip seat continues to flip backward to the limit position. The optocoupler baffle triggers the optocoupler, and the control system controls the motor to stop rotating. Because no vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the second limit switch enters the flip seat from the detection hole. However, since there is no vacuum blood collection tube in the flip seat, the second limit switch cannot be pressed down, so the second limit switch is not triggered. The control system controls the motor to rotate forward, and the flip gear drives the flip half gear and the flip seat to rotate backward, ending this sample injection.

4. A closed single-injection device for a blood cell analyzer with mixing function according to claim 1, characterized in that, When the support column is attracted to the magnet, and the flip seat, along with its outer decorative panel bracket, is pushed into the base and a vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the limit switch pressure plate triggers the first limit switch. The electromagnet's slide rod extends into the locking hole to lock the flip seat's outer decorative panel bracket. Then, the control system controls the motor to reverse, and the flip gear drives the flip half gear and the flip seat to flip backward. The magnet on the flip seat separates from the support column, and the flip seat continues to flip backward to its limit position. The optocoupler baffle triggers the optocoupler, and the control system controls the motor to stop rotating. Because a vacuum blood collection tube is inserted into the vacuum blood collection tube hole, the second limit switch enters the flip seat from the detection hole. The presence of a vacuum blood collection tube inside the flip seat presses down the second limit switch, causing the second limit switch to activate. When the switch is triggered, the control system controls the motor to rotate. The flip gear drives the flip half gear and the flip seat to rotate back and forth until the sample in the vacuum blood collection tube is inverted and mixed. The control system then controls the motor to rotate forward, and the flip gear drives the flip half gear and the flip seat to rotate backward. The magnet attracts the support column, and the external sampling needle is inserted into the vacuum blood collection tube through the opening in the top plate to collect the sample. After the external sampling needle finishes sampling and is withdrawn, the control system controls the electromagnet to be energized. The electromagnet's slide rod exits the locking hole, releasing the outer trim bracket of the flip seat. At the same time, the control system controls the motor to rotate forward, and the flip seat and the outer trim bracket of the flip seat detach from the side opening of the base, removing the vacuum blood collection tube and ending the current sample injection.

5. A closed single-injection device for a blood cell analyzer with mixing function according to claim 1, characterized in that, The support column and the magnet were not attracted to each other. Only the flip seat was pushed into the base. The limit switch pressure plate did not trigger the first limit switch, thus ending the current sample injection.

6. A closed single-injection device for a blood cell analyzer with mixing function according to claim 1, characterized in that, After the outer trim bracket of the flip seat is dislodged from the opening on the side of the base, the limit switch pressure plate abuts against the slot of the side plate of the base to limit the dislodging of the outer trim bracket of the flip seat.

7. The closed single sample inlet device for a blood cell analyzer with mixing function according to claim 1, wherein, The center point of the opening in the top plate is located on the vertical axis of the vacuum blood collection tube hole of the flip seat.

8. A closed single-injection device for a blood cell analyzer with mixing function according to claim 1, characterized in that, The center of the arc-shaped opening of the limiting plate is located on the axis of the flipping shaft.

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