Partition plate driving structure of three-plate extrusion device of blood separator

Abstract

The utility model relates to a partition plate driving structure of a three-plate extrusion device of a blood separator, which comprises a linear motor, a driving mechanism and a driving mechanism, the connecting block is used for connecting the partition plate and an output shaft of the linear motor; the pressure sensor is used for being connected with the partition plate to detect the pressure between the partition plate and the main pressing plate and is suitable for sending a signal to a control system for controlling the linear motor to move when the linear motor operates to drive the partition plate to move close to the main pressing plate and the pressure detected by the pressure sensor exceeds a set value; and the control system controls the linear motor to stop running. Pressure between the partition plate and the main pressing plate is detected through the pressure sensor, the linear motor is controlled to stop running when the pressure exceeds a set value, the moving distance of the partition plate is controlled according to the pressure between the partition plate and the main pressing plate, and it can be guaranteed that the blood bag is pressed on the main pressing plate through the partition plate, so that the blood bag is divided into two parts which are not communicated with each other.

Description

Technical Field

[0001] The utility model relates to the field of blood separation technology, and particularly relates to a partition plate driving structure of a three-plate extrusion device of a blood separator. Background Art

[0002] In a blood separator for separating the buffy coat in blood at present, the extrusion mechanism mainly consists of a main pressing plate, a secondary pressing plate, a partition plate, and a support wall on the separator body for supporting the blood bag. The secondary pressing plate, the partition plate, and the support wall are distributed in sequence from top to bottom in the vertical direction, and the main pressing plate is spaced from the support wall in the horizontal direction. The main pressing plate can move closer to or away from the support wall, and both the secondary pressing plate and the partition plate can move closer to or away from the main pressing plate. The specific operation method is as follows: The blood bag is placed between the main pressing plate and the support wall with the bag opening facing up. The main pressing plate moves closer to the support wall to squeeze the blood bag. When the buffy coat component in the blood bag is squeezed above the partition plate, the main pressing plate stops moving. Then the partition plate moves closer to the main pressing plate to press the blood bag against the main pressing plate, so that the two parts of the blood bag above and below the partition plate are not communicated with each other. At this time, all the buffy coat components are located in the part of the blood bag above the partition plate. Then, the secondary pressing plate moves closer to the main pressing plate to squeeze the part of the blood bag above the partition plate, and the buffy coat is squeezed out of the blood bag. In this way, the precise separation of the buffy coat component is realized.

[0003] In the actual operation process, for blood bags of different specifications or capacities, when the buffy coat component in the blood bag is squeezed above the partition plate, the degree of squeezing of the blood bag is different, and the distance between the main pressing plate and the support wall when the main pressing plate stops moving is different. Therefore, for blood bags of different specifications or capacities, the distance that the partition plate moves closer to the main pressing plate should be adjusted according to the distance between the main pressing plate and the support wall when the main pressing plate stops moving, so as to ensure that the partition plate presses the blood bag tightly against the main pressing plate and divides the blood bag into two non-communicating parts. And how to achieve this purpose is a technical problem that needs to be solved at present. Summary of the Utility Model

[0004] Based on the above description, the utility model provides a partition plate driving structure of a three-plate extrusion device of a blood separator, so as to realize that for blood bags of different specifications or capacities, the distance that the partition plate moves closer to the main pressing plate can ensure that the partition plate presses the blood bag tightly against the main pressing plate and divides the blood bag into two non-communicating parts.

[0005] The technical solution of the utility model to solve the above technical problem is as follows:

[0006] The present application provides a partition plate driving structure of a three-plate extrusion device of a blood separator, and the technical solution adopted is as follows:

[0007] A partition plate driving structure of a three-plate extrusion device of a blood separator includes:

[0008] A linear motor, the axis of its output shaft being parallel to the moving direction of the partition plate, and the linear motor is used to be fixed on the body of the separator;

[0009] A connecting block, which is used to connect the partition plate and the output shaft of the linear motor;

[0010] A pressure sensor, which is used to be connected to the partition plate to detect the pressure between the partition plate and the main pressing plate. When the linear motor operates to drive the partition plate to move closer to the main pressing plate, and when the pressure detected by the pressure sensor exceeds the set value, a signal is sent to the control system that controls the movement of the linear motor, so as to control the linear motor to stop operating through the control system.

[0011] Preferably, the output shaft of the linear motor is arranged towards the partition plate, the connecting block and the output shaft of the linear motor are arranged at intervals in the moving direction of the partition plate, and the pressure sensor is arranged between the connecting block and the output shaft of the linear motor to detect the pressure between the connecting block and the output shaft of the linear motor in the moving direction of the partition plate.

[0012] Preferably, a driving block is connected to the end of the output shaft of the linear motor, a mounting block is connected to the connecting block, the mounting block and the driving block are distributed at intervals in the axial direction of the output shaft of the linear motor, and the pressure sensor is arranged between the mounting block and the driving block.

[0013] Preferably, it further includes a guiding track, which is arranged along the moving direction of the partition plate and is used to be fixed on the body of the separator. A slider adapted to it is assembled on the guiding track, and the slider is used to be fixed to the partition plate.

[0014] Preferably, it further includes a first guiding wheel and a second guiding wheel. The axes of the first guiding wheel and the second guiding wheel are both parallel to the plate surface of the partition plate and perpendicular to the moving direction of the partition plate. The first guiding wheel and the second guiding wheel are both used to be rotatably connected to the body of the separator, and the first guiding wheel and the second guiding wheel are respectively arranged on both sides of the partition plate and in contact with the partition plate, so as to limit the movement of the partition plate relative to the body of the separator in the direction perpendicular to its plate surface through the first guiding wheel and the second guiding wheel.

[0015] Preferably, a photoelectric switch is connected to the linear motor, and a triggering member for triggering the photoelectric switch is connected to the partition plate. When the linear motor operates to drive the partition plate to move away from the main pressing plate from the state of squeezing the blood bag, the partition plate can move to the position where the triggering member triggers the photoelectric switch. When the photoelectric switch is triggered, a signal is sent to the control system, so as to control the linear motor to stop operating through the control system.

[0016] Preferably, the triggering member includes a triggering piece or a triggering rod.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0018] 1. In the present application, through the linear motor and the connecting block, the linear motor is fixed on the body of the separator, the connecting block connects the partition plate and the output shaft of the linear motor. When the linear motor operates, the output shaft moves along the moving direction of the partition plate, and drives the partition plate to move through the connecting block, realizing the function of driving the partition plate to move; and by setting a pressure sensor to detect the pressure between the partition plate and the main pressing plate, when the partition plate presses the blood bag against the main pressing plate, the pressure value detected by the pressure sensor gradually increases as the partition plate continues to move closer to the main pressing plate. When the pressure exceeds the set value, it indicates that there is sufficient pressure between the partition plates. The pressure sensor is connected to the drive system that controls the operation of the linear motor, and when the pressure exceeds the set value, it controls the linear motor to stop operating. When designing, the blood bag is separated into two non - communicating parts at the set pressure value, thus ensuring the separation effect of the partition plate; the moving distance of the partition plate is controlled according to the pressure between the partition plate and the main pressing plate. For blood bags of different specifications or capacities, with different distances between the main pressing plate and the support wall when the main pressing plate stops moving, the distance that the partition plate moves closer to the main pressing plate can be automatically adapted, so as to ensure that the partition plate presses the blood bag against the main pressing plate and the blood bag is separated into two non - communicating parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the partition plate drive structure of the three - plate extrusion device of the blood separator provided by the embodiment of the present utility model;

[0020] Figure 2 It is a schematic diagram of another perspective of the partition plate drive structure of the three - plate extrusion device of the blood separator provided by the embodiment of the present utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Main pressing plate; 2. Support wall; 3. Partition plate; 4. Linear motor; 5. Connecting block; 6. Pressure sensor; 7. Driving block; 8. Mounting block; 9. Guide rail; 10. Slide block; 11. First guide wheel; 12. Second guide wheel; 13. Photoelectric switch; 14. Triggering member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the drawing is flipped, an element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device may also include other orientations (such as rotating 90 degrees or other orientations), and the spatial descriptors used herein are accordingly interpreted.

[0026] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0027] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprise / include" or "have" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0028] Referring to Figure 1-2 As shown, the embodiment of the present application provides a partition driving structure of a three-plate extrusion device of a blood separator, including a linear motor 4, a connecting block 5 and a pressure sensor 6. The axis of the output shaft of the linear motor 4 is parallel to the moving direction of the partition 3. The linear motor 4 is used to be fixed on the separator body. The connecting block 5 is used to connect the partition 3 and the output shaft of the linear motor 4. The pressure sensor 6 is used to be connected to the partition 3 to detect the pressure between the partition 3 and the main pressing plate 1. When the linear motor 4 operates to drive the partition 3 to move closer to the main pressing plate 1, and when the pressure detected by the pressure sensor 6 exceeds the set value, a signal is sent to the control system that controls the movement of the linear motor 4, so as to control the linear motor 4 to stop operating through the control system.

[0029] Referring to Figure 1-2 As shown, specifically, to detect the pressure between the partition plate 3 and the main pressing plate 1, the output shaft of the linear motor 4 is arranged towards the partition plate 3. The connecting block 5 is arranged at an interval from the output shaft of the linear motor 4 in the moving direction of the partition plate 3. The pressure sensor 6 is arranged between the connecting block 5 and the output shaft of the linear motor 4 to detect the pressure between the connecting block 5 and the output shaft of the linear motor 4 in the moving direction of the partition plate 3. When the linear motor 4 operates to drive the partition plate 3 to move closer to the main pressing plate 1, the driving force is transmitted to the pressure sensor 6 through the output shaft and further transmitted to the connecting block 5, thereby driving the connecting block 5 and the partition plate 3 to move. At this time, the pressure sensor 6 detects the pressure between the drive shaft and the connecting block 5. When the partition plate 3 and the main pressing plate 1 are in contact, the movement of the partition plate 3 is blocked, and the pressure detected by the pressure sensor 6 increases, so that the pressure between the partition plate 3 and the main pressing plate 1 is indirectly detected through the pressure sensor 6. At the same time, the pressure sensor 6 is installed between the output shaft of the linear motor 4 and the connecting block 5, and the installation of the pressure sensor 6 is more convenient.

[0030] Referring to Figure 1-2 As shown, further, a driving block 7 is connected to the end of the output shaft of the linear motor 4, and a mounting block 8 is connected to the connecting block 5. The mounting block 8 and the driving block 7 are distributed at intervals in the axial direction of the output shaft of the linear motor 4. The pressure sensor 6 is arranged between the mounting block 8 and the driving block 7. The settings of the driving block 7 and the mounting block 8 facilitate the connection between the output shaft of the linear motor 4 and the connecting block 5, and at the same time facilitate the installation of the pressure sensor 6 and the transmission of power.

[0031] Referring to Figure 1-2 As shown, further, to improve the stability of the movement of the partition plate 3, a guiding track 9 is also provided. The guiding track 9 is arranged along the moving direction of the partition plate 3 and is used to be fixed on the separating machine body. A slider 10 adapted to it is assembled on the guiding track 9, and the slider 10 is used to be fixed to the partition plate 3. Specifically, in this embodiment, the horizontal state of the partition plate 3 is used for illustration and description. The connecting block 5 is located below the partition plate 3 and is fixed to the partition plate 3. There are two guiding tracks 9, and both are located below the partition plate 3. The two guiding tracks 9 are distributed at intervals in the horizontal direction perpendicular to the moving direction of the partition plate 3. The connecting block 5 is located between the two guiding tracks 9. Correspondingly, both guiding tracks 9 are connected with sliders 10, and both two sliders 10 are fixed to the partition plate 3. To play a guiding role in the movement of the partition plate 3 through the guiding track 9 and improve the stability of the movement of the guiding plate.

[0032] Referring to Figure 1-2As shown in the figure, further, to prevent the partition plate 3 from moving relative to the separator body in a direction perpendicular to its plate surface, a first guide wheel 11 and a second guide wheel 12 are provided. The axes of the first guide wheel 11 and the second guide wheel 12 are both parallel to the plate surface of the partition plate 3 and perpendicular to the moving direction of the partition plate 3. The first guide wheel 11 and the second guide wheel 12 are both rotatably connected to the separator body. The first guide wheel 11 and the second guide wheel 12 are respectively arranged above and below the partition plate 3 and are in contact with the partition plate 3 to limit the movement of the partition plate 3 relative to the separator body in a direction perpendicular to its plate surface through the first guide wheel 11 and the second guide wheel 12. Specifically, the first guide wheel 11 and the second guide wheel 12 form a limiting structure. The projections of the first guide wheel 11 and the second guide wheel 12 of the limiting structure coincide in the vertical direction, so that the first guide wheel 11 and the second guide wheel 12 of the limiting structure cooperate to clamp the partition plate 3. In this embodiment, two groups of limiting structures are respectively arranged on both sides of the moving direction of the partition plate 3. The two groups of limiting structures on one side of the partition plate 3 are arranged at intervals along the moving direction of the partition plate 3. In this way, the partition plate 3 can be stably limited by multiple groups of limiting structures, improving the stability of the movement of the partition plate 3.

[0033] Refer to Figure 1-2 As shown in the figure, further, a photoelectric switch 13 is connected to the linear motor 4, and a trigger member 14 for triggering the photoelectric switch 13 is connected to the partition plate 3. When the linear motor 4 operates to drive the partition plate 3 to move away from the main pressing plate 1 from the state of squeezing the blood bag, the partition plate 3 can move to the position where the trigger member 14 triggers the photoelectric switch 13. When the photoelectric switch 13 is triggered, it sends a signal to the control system to control the linear motor 4 to stop running through the control system. Specifically, the trigger member 14 can be a trigger rod or a trigger piece, etc. In this embodiment, a trigger piece is used for illustration, and the trigger member 14 is connected to the driving block 7 and is indirectly connected to the partition plate 3 and moves close to or away from the linear motor 4 with the partition plate 3. In the design, when the partition plate 3 moves away from the main pressing plate 1 to the initial position, the trigger member 14 triggers the photoelectric switch 13, so that the partition plate 3 can be reset to the initial position after each separation work is completed, so as to perform the next separation work.

[0034] Through the above settings in this application, the moving distance of the partition plate 3 close to the main pressing plate 1 is controlled according to the pressure between the partition plate 3 and the main pressing plate 1. For blood bags of different specifications or capacities, with different distances between the main pressing plate 1 and the support wall 2 when the main pressing plate 1 stops moving, the moving distance of the partition plate 3 close to the main pressing plate 1 can be automatically adapted, so as to ensure that the partition plate 3 presses the blood bag against the main pressing plate 1 to divide the blood bag into two non-communicating parts, ensuring that the subsequent white film is completely extruded and avoiding residual basic components, and improving the accuracy of white film separation.

[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A partition plate driving structure of a three-plate extrusion device of a blood separator, characterized in that: include: A linear motor (4), the axis of the output shaft of which is parallel to the moving direction of the partition plate (3), and the linear motor (4) is used to be fixed on the separator body; A connecting block (5) used for connecting the partition plate (3) and the output shaft of the linear motor (4); A pressure sensor (6) is used to connect with the partition plate (3) to detect the pressure between the partition plate (3) and the main pressure plate (1), and is suitable for when the linear motor (4) drives the partition plate (3) to move close to the main pressure plate (1), when the pressure sensor (6) detects that the pressure exceeds a set value, sending a signal to the control system that controls the movement of the linear motor (4), so as to control the linear motor (4) to stop running through the control system.

2. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 1, characterized in that: The output shaft of the linear motor (4) is arranged toward the partition plate (3), the connecting block (5) and the output shaft of the linear motor (4) are arranged at intervals in the moving direction of the partition plate (3), and the pressure sensor (6) is arranged between the connecting block (5) and the output shaft of the linear motor (4) to detect the pressure between the connecting block (5) and the output shaft of the linear motor (4) in the moving direction of the partition plate (3).

3. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 2 is characterized in that: The end of the output shaft of the linear motor (4) is connected to a driving block (7), the connecting block (5) is connected to a mounting block (8), the mounting block (8) and the driving block (7) are spaced apart in the axial direction of the output shaft of the linear motor (4), and the pressure sensor (6) is arranged between the mounting block (8) and the driving block (7).

4. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 1, characterized in that: It also comprises a guide rail (9) which is arranged along the moving direction of the partition plate (3) and is used to be fixed on the separator body. The guide rail (9) is equipped with a sliding block (10) adapted thereto, and the sliding block (10) is used to be fixed to the partition plate (3).

5. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 1, characterized in that: It also includes a first guide wheel (11) and a second guide wheel (12), wherein the axes of the first guide wheel (11) and the second guide wheel (12) are parallel to the surface of the partition plate (3) and perpendicular to the moving direction of the partition plate (3), and the first guide wheel (11) and the second guide wheel (12) are used to be rotatably connected to the separator body, and the first guide wheel (11) and the second guide wheel (12) are respectively arranged on both sides of the partition plate (3) and in contact with the partition plate (3), so as to limit the movement of the partition plate (3) relative to the separator body in a direction perpendicular to its surface through the first guide wheel (11) and the second guide wheel (12).

6. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 1, characterized in that: The linear motor (4) is connected to a photoelectric switch (13), and the partition plate (3) is connected to a triggering member (14) for triggering the photoelectric switch (13). When the linear motor (4) drives the partition plate (3) to move away from the main pressure plate (1) from a state of squeezing a blood bag, the partition plate (3) can move to the triggering member (14) to trigger the photoelectric switch (13). When the photoelectric switch (13) is triggered, a signal is sent to the control system so that the linear motor (4) is controlled by the control system to stop running.

7. The partition plate driving structure of the three-plate extrusion device of the blood separator according to claim 6, characterized in that: The trigger member (14) comprises a trigger sheet or a trigger rod.

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