Freeze-dried ball screening equipment and method

Abstract

The invention relates to the technical field of automatic production equipment, and discloses freeze-drying ball screening equipment and a freeze-drying ball screening method. The freeze-drying ball screening equipment comprises an equipment main body, a first blocking piece, a second blocking piece, a detection mechanism and a material pushing mechanism, and the equipment main body is provided with a cache channel, a qualified channel and a disqualified channel. And the first blocking piece is provided with a first position for separating the qualified channel from the cache channel and a second position for communicating the qualified channel with the cache channel. And the second blocking piece is provided with a third position for separating the unqualified channel from the cache channel and a fourth position for communicating the unqualified channel with the cache channel. The detection mechanism is used for detecting the number of the freeze-drying balls in the cache channel, and when the number of the freeze-drying balls is larger than 1, the material pushing mechanism sends at least part of the freeze-drying balls in the cache channel into the unqualified channel, it is guaranteed that only one freeze-drying ball enters the storage container each time, and it is guaranteed that the split charging dosage is accurate; the freeze-drying balls are located in the closed environment of the cache channel, the qualified channel or the unqualified channel in the whole process, and pollution to the freeze-drying balls can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automated production equipment, and in particular to a freeze-dried ball screening device and method. Background Art

[0002] Freeze-dried balls are small solid balls that are quickly frozen into shape at extremely low temperatures by being pumped into liquid nitrogen through a professional precision micro pump. Freeze-dried balls are mainly used in the fields of medical diagnosis, beauty and skin care. In the production process of freeze-dried ball products, the freeze-dried balls need to be quickly packaged into containers for sealed storage after being formed, or the freeze-dried balls need to be packaged into reaction disks for subsequent biochemical reactions or tests.

[0003] In the prior art, when the freeze-dried balls are packaged, due to the influence of static electricity, sometimes multiple (two or more) freeze-dried balls fall into the container or reaction disk at a time, resulting in unqualified dosage of freeze-dried balls in a single container, or causing the number of balls implanted in a single acupuncture point of the reaction disk to increase and the reagent volume to exceed the required range, causing the reaction disk to be scrapped.

[0004] Therefore, there is an urgent need for a freeze-dried ball screening device and method to solve the above problems. Summary of the invention

[0005] Based on the above problems, the object of the present invention is to provide a freeze-dried ball screening device and method, which can accurately control the packaging quantity of the freeze-dried balls and ensure the accuracy of the packaging dosage of the freeze-dried balls.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] On the one hand, a freeze-dried ball screening device is provided, comprising:

[0008] A device body, on which a cache channel, a qualified channel and an unqualified channel are arranged, and the cache channel can selectively communicate with the qualified channel or the unqualified channel;

[0009] a first blocking member, movably disposed on the device body so as to be switchable between a first position and a second position, wherein when the first blocking member is located at the first position, the qualified channel is separated from the cache channel, and when the first blocking member is located at the second position, the qualified channel is connected to the cache channel;

[0010] a second blocking member, movably disposed on the device body so as to be switchable between a third position and a fourth position, wherein when the second blocking member is located at the third position, the non-qualified channel is separated from the cache channel, and when the second blocking member is located at the fourth position, the non-qualified channel is connected to the cache channel;

[0011] a detection mechanism, used for detecting the number of freeze-dried balls in the cache channel, and when the number of freeze-dried balls in the cache channel is 1, the first blocking member is switched to the second position to allow the freeze-dried balls in the cache channel to enter the qualified channel;

[0012] The pushing mechanism is arranged on the device body. When the number of freeze-dried balls in the cache channel is greater than 1, the second blocking member is switched to the fourth position, and the pushing mechanism sends at least part of the freeze-dried balls in the cache channel into the unqualified channel.

[0013] As an optional solution of the freeze-dried ball screening device of the present invention, the cache channel has a plurality of freeze-dried ball cache positions arranged sequentially from bottom to top, and each of the freeze-dried ball cache positions can only accommodate a single freeze-dried ball;

[0014] The detection mechanism includes a first detection member and a second detection member, and the first detection member and the second detection member are respectively used to detect whether there are freeze-dried balls in the two adjacent freeze-dried ball cache positions at the bottom in the cache channel; or, the detection mechanism includes a third detection member, and the third detection member is used to detect whether there are freeze-dried balls in the second freeze-dried ball cache position from bottom to top in the cache channel.

[0015] As an optional solution of the freeze-dried ball screening device of the present invention, the freeze-dried ball screening device also includes a first driving member and a first movable seat, the output end of the first driving member is connected to the first movable seat, a first guide hole connected to the qualified channel is provided on the device body, one end of the first blocking member is fixedly connected to the first movable seat, and the other end is movably inserted into the first guide hole, and when in the first position, the first blocking member passes through the first guide hole and extends into the qualified channel.

[0016] As an optional solution of the freeze-dried ball screening device of the present invention, the freeze-dried ball screening device also includes a second driving member and a second movable seat, the output end of the second driving member is connected to the second movable seat, a second guide hole connected to the unqualified channel is provided on the device body, one end of the second blocking member is fixedly connected to the second movable seat, and the other end is movably inserted into the second guide hole, and when in the third position, the second blocking member passes through the second guide hole and extends into the unqualified channel.

[0017] As an optional solution of the freeze-dried ball screening device of the present invention, the pushing mechanism includes a blowing device, an air intake space is provided on the device body, an air outlet end of the blowing device is connected to the air intake space, the air intake space has a blowing port extending obliquely toward the unqualified channel, and the blowing device can blow the freeze-dried balls in the cache channel into the unqualified channel;

[0018] Alternatively, the pushing mechanism includes a push rod movably disposed on the device body, and the push rod can push the freeze-dried balls in the cache channel to move to the unqualified channel.

[0019] As an optional solution of the freeze-dried ball screening device of the present invention, the qualified channel extends in the vertical direction and is located directly below the cache channel; the unqualified channel includes a first channel and a second channel connected by a bend, the first channel is selectively connected to the cache channel, and the entrance of the first channel is located above the entrance of the qualified channel, and the second channel extends downward in a direction away from the first channel.

[0020] As an optional solution of the freeze-dried ball screening device of the present invention, the freeze-dried ball screening device also includes a socket arranged on the device body, the socket is configured to be connected to the discharge port of the freeze-dried ball distribution device, and a feed channel is arranged on the socket, and the discharge port is connected to the cache channel through the feed channel.

[0021] As an optional solution of the freeze-dried ball screening device of the present invention, the device body is provided with a first discharge nozzle at the discharge end of the qualified channel, and the first discharge nozzle can be inserted into a storage container for storing freeze-dried balls;

[0022] And / or, the equipment body is provided with a second discharge nozzle at the discharge end of the unqualified channel, and the second discharge nozzle can be inserted into a collection container for collecting freeze-dried balls.

[0023] As an optional solution of the freeze-dried ball screening device of the present invention, the freeze-dried ball screening device also includes a loading plate arranged on the device body, the loading plate is located below the discharge end of the qualified channel, and is used to fix a storage container for storing the freeze-dried balls.

[0024] As an optional solution of the freeze-dried ball screening device of the present invention, the freeze-dried ball screening device also includes an observation window arranged on the device body, and the cache channel, the qualified channel and the unqualified channel are arranged on the side of the device body facing the observation window. The observation window is made of a transparent material, and the freeze-dried balls in the cache channel, the qualified channel and the unqualified channel can be observed through the observation window.

[0025] On the other hand, a freeze-dried ball screening method is provided, using the freeze-dried ball screening device as described above, and the freeze-dried ball screening method comprises the following steps:

[0026] S1, determining whether the number of freeze-dried balls in the cache channel is 1, if so, executing S2, if not, executing S3;

[0027] S2, controlling the first blocking member to switch to the second position, and controlling the second blocking member to remain at the third position, so that the freeze-dried balls enter the qualified channel;

[0028] S3, controlling the first blocking member to remain in the first position, controlling the second blocking member to switch to the fourth position, and controlling the pushing mechanism to move so as to send at least part of the freeze-dried balls in the buffer channel into the unqualified channel;

[0029] S4. Repeat step S1.

[0030] The beneficial effects of the present invention are:

[0031] In the freeze-dried ball screening device and method provided by the present invention, the upper end of the buffer channel is used for feeding. In the initial state, the first blocking member is in the first position and the second blocking member is in the third position, that is, the qualified channel and the unqualified channel are not connected to the buffer channel, the lower end of the buffer channel is closed, and the freeze-dried balls entering the buffer channel are temporarily stored in the buffer channel. The detection mechanism detects the number of freeze-dried balls in the buffer channel in real time. If the number of freeze-dried balls in the buffer channel is detected to be 1, it indicates that there are no excess freeze-dried balls in the buffer channel. At this time, the first blocking member can be controlled to switch to the second position to conduct the qualified channel and the buffer channel, so that the freeze-dried balls in the buffer channel flow out through the qualified channel to the storage container for storing the freeze-dried balls, completing the packaging of the freeze-dried balls. If the number of freeze-dried balls detected in the cache channel is greater than 1, it indicates that there are excess freeze-dried balls in the cache channel. At this time, the first blocking member is controlled to remain in the first position to prevent multiple freeze-dried balls from entering the storage container through the qualified channel. At the same time, the second blocking member is controlled to switch to the fourth position to connect the unqualified channel and the cache channel, and the pushing mechanism is controlled to move to send part or all of the freeze-dried balls in the cache channel into the unqualified channel. That is, the pushing mechanism can send the excess freeze-dried balls in the cache channel to the unqualified channel one by one until the number of freeze-dried balls in the cache channel is detected to be 1, the pushing mechanism is controlled to stop, and the second blocking member is controlled to switch to the third position, and the first blocking member is controlled to switch to the second position, so that the freeze-dried balls in the cache channel fall into the storage container; the pushing mechanism can also send all the freeze-dried balls in the cache channel to the unqualified channel at one time. At this time, the number of freeze-dried balls detected by the detection mechanism is 0, and the second blocking member is controlled to switch to the third position to enter the next freeze-dried ball screening cycle. That is to say, only when the number of freeze-dried balls is detected to be 1, the cache channel can be connected to the qualified channel, ensuring that only one freeze-dried ball can enter the storage container through the qualified channel at a time.

[0032] The freeze-dried ball screening device and method can send at least part of the freeze-dried balls in the cache channel into the unqualified channel during the freeze-dried ball packaging process, ensuring that only one freeze-dried ball enters the storage container from the qualified channel at a time, thereby accurately controlling the number of freeze-dried balls entering the storage container at a single time to 1, and ensuring the accuracy of the freeze-dried ball packaging dosage. At the same time, the setting of the detection mechanism can control the action of the first blocking member, the second blocking member and the pushing mechanism according to the number of freeze-dried balls in the cache channel, realize the full-automatic packaging and screening of the freeze-dried balls, and improve the efficiency of freeze-dried ball packaging. In addition, the freeze-dried balls are always in the closed environment of the cache channel, the qualified channel or the unqualified channel during the packaging process, which can isolate the external environment, avoid cross contamination caused by contact between the freeze-dried balls and foreign objects, and ensure the packaging quality of the freeze-dried balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0034] Figure 1 It is a first structural schematic diagram of a freeze-dried ball screening device provided in a specific embodiment of the present invention;

[0035] Figure 2 is a second structural schematic diagram of the freeze-dried ball screening device provided in a specific embodiment of the present invention;

[0036] Figure 3 is a first cross-sectional view of a freeze-dried ball screening device provided in a specific embodiment of the present invention;

[0037] Figure 4 is a second cross-sectional view of the freeze-dried ball screening device provided by a specific embodiment of the present invention;

[0038] Figure 5 is a third cross-sectional view of the freeze-dried ball screening device provided by a specific embodiment of the present invention;

[0039] Figure 6 It is a schematic diagram of the connection between the freeze-dried ball screening device and the freeze-dried ball dispensing device provided in a specific embodiment of the present invention;

[0040] Figure 7 is a first flow chart of the freeze-dried ball screening method provided by a specific embodiment of the present invention;

[0041] Figure 8 It is the second flow chart of the freeze-dried ball screening method provided in the specific embodiment of the present invention.

[0042] In the figure:

[0043] 1. Equipment body; 4. First detection part; 5. Second detection part; 6. Air blowing device; 7. Socket;

[0044] 8. Second discharge nozzle; 9. Loading plate; 10. Observation window;

[0045] 11. Cache channel; 12. Qualified channel; 13. Unqualified channel; 14. First guide hole; 15. Air intake space;

[0046] 131, first channel; 132, second channel; 151, air blowing port;

[0047] 21. first blocking member; 22. first driving member; 23. first moving seat; 221. first floating joint;

[0048] 31. second blocking member; 32. second driving member; 33. second moving seat; 321. second floating joint;

[0049] 71. Feed channel; 72. Seat body; 73. Plug connector;

[0050] 91, first plate; 92, second plate; 921, card slot;

[0051] 100. Freeze-dried balls; 200. Storage container; 300. Freeze-dried ball dispensing equipment;

[0052] 301, discharge port; 302, storage bin; 303, base; 304, material distribution channel. DETAILED DESCRIPTION

[0053] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] like Figures 1 to 6 As shown, this embodiment provides a freeze-dried ball screening device, which can accurately control the number of freeze-dried balls 100 to ensure the accuracy of the packaging dosage of the freeze-dried balls 100 and avoid the scrapping of the reaction disc. The freeze-dried ball screening device includes a device body 1, a first blocking member 21, a second blocking member 31, a detection mechanism and a pushing mechanism.

[0057] Among them, see Figure 1 , Figure 2 and Figure 3 The device body 1 is provided with a cache channel 11, a qualified channel 12 and an unqualified channel 13, and the cache channel 11 is selectively connected to the qualified channel 12 or the unqualified channel 13. The first blocking member 21 is movably provided on the device body 1 so as to be switchable between a first position and a second position. When the first blocking member 21 is located at the first position, the qualified channel 12 is separated from the cache channel 11, and when the first blocking member 21 is located at the second position, the qualified channel 12 is connected to the cache channel 11. The second blocking member 31 is movably provided on the device body 1 so as to be switchable between a third position and a fourth position. When the second blocking member 31 is located at the third position, the unqualified channel 13 is separated from the cache channel 11, and when the second blocking member 31 is located at the fourth position, the unqualified channel 13 is connected to the cache channel 11.

[0058] The detection mechanism is used to detect the number of freeze-dried balls in the cache channel 11, and the pushing mechanism is arranged on the equipment body 1. When the detection mechanism detects that the number of freeze-dried balls in the cache channel 11 is 1, the first blocking member 21 switches to the second position to allow the freeze-dried balls 100 in the cache channel 11 to enter the qualified channel 12; when the detection mechanism detects that the number of freeze-dried balls in the cache channel 11 is greater than 1, the second blocking member 31 switches to the fourth position, and the pushing mechanism sends at least part of the freeze-dried balls 100 in the cache channel 11 into the unqualified channel 13.

[0059] like Figure 3 As shown, the upper end of the buffer channel 11 is used for feeding. In the initial state, the first blocking member 21 is in the first position and the second blocking member 31 is in the third position, that is, the qualified channel 12 and the unqualified channel 13 are not connected to the buffer channel 11, and the lower end of the buffer channel 11 is closed. The freeze-dried balls 100 entering the buffer channel 11 are temporarily stored in the buffer channel. The detection mechanism detects the number of freeze-dried balls in the buffer channel 11 in real time. If the number of freeze-dried balls in the buffer channel 11 is detected to be 1, it indicates that there are no excess freeze-dried balls 100 in the buffer channel 11. At this time, the first blocking member 21 can be controlled to switch to the second position (such as Figure 5 As shown), the qualified channel 12 and the cache channel 11 are connected, so that the freeze-dried balls 100 in the cache channel 11 flow out through the qualified channel 12 to the storage container 200 for storing the freeze-dried balls 100, thereby completing the packaging of the freeze-dried balls 100.

[0060] If the number of freeze-dried balls detected in the buffer channel 11 is greater than 1, it indicates that there are excess freeze-dried balls 100 in the buffer channel 11. At this time, the first blocking member 21 is controlled to remain in the first position to prevent multiple freeze-dried balls 100 from entering the storage container 200 through the qualified channel 12. At the same time, the second blocking member 31 is controlled to be switched to the fourth position (such as Figure 4As shown), the non-qualified channel 13 and the buffer channel 11 are connected, and the pushing mechanism is controlled to move to send part of the freeze-dried balls 100 or all the freeze-dried balls 100 in the buffer channel 11 into the non-qualified channel 13. That is, the pushing mechanism can send the excess freeze-dried balls 100 in the buffer channel 11 into the non-qualified channel 13 one by one, until the number of freeze-dried balls in the buffer channel 11 is detected to be 1, the pushing mechanism is controlled to stop moving, and the second blocking member 31 is controlled to switch to the third position, and the first blocking member 21 is controlled to switch to the second position, so that the freeze-dried balls 100 in the buffer channel 11 fall into the storage container 200; the pushing mechanism can also send all the freeze-dried balls 100 in the buffer channel 11 into the non-qualified channel 13 at one time, at which time the number of freeze-dried balls detected by the detection mechanism is 0, and the second blocking member 31 is controlled to switch to the third position to enter the next freeze-dried ball screening cycle. That is to say, only when the number of freeze-dried balls is detected to be 1, the cache channel 11 can be connected to the qualified channel 12, ensuring that only one freeze-dried ball 100 can enter the storage container 200 through the qualified channel 12 at a time.

[0061] The freeze-dried ball screening device can send at least part of the freeze-dried balls 100 in the cache channel 11 into the unqualified channel 13 during the freeze-dried ball 100 packaging process, ensuring that only one freeze-dried ball 100 enters the storage container 200 from the qualified channel 12 at a time, thereby accurately controlling the number of freeze-dried balls entering the storage container 200 at a single time to be 1, and ensuring the accuracy of the freeze-dried ball 100 packaging dose. At the same time, the setting of the detection mechanism can control the action of the first blocking member 21, the second blocking member 31 and the pushing mechanism according to the number of freeze-dried balls 100 in the cache channel 11, realize the full-automatic packaging and screening of the freeze-dried balls 100, and improve the packaging efficiency of the freeze-dried balls 100. In addition, the freeze-dried balls 100 are always in the closed environment of the cache channel 11, the qualified channel 12 or the unqualified channel 13 during the packaging process, which can isolate the external environment, avoid cross contamination caused by contact between the freeze-dried balls 100 and foreign objects, and ensure the packaging quality of the freeze-dried balls 100.

[0062] Optionally, the cache channel 11 has a plurality of freeze-dried ball cache positions arranged sequentially from bottom to top, and each freeze-dried ball cache position can only accommodate a single freeze-dried ball 100. That is, the freeze-dried ball 100 cache channel 11 can only stack multiple freeze-dried balls 100 sequentially from bottom to top, that is, the lateral space of the cache channel 11 only allows a single freeze-dried ball 100 to pass through, ensuring that only one freeze-dried ball 100 can enter the qualified channel 12 after the qualified channel 12 is connected to the cache channel 11, further ensuring the accuracy of the packaged dose of the freeze-dried ball 100.

[0063] In this embodiment, the width of the buffer channel 11 is 0.1 mm to 0.5 mm larger than the diameter of the freeze-dried ball 100, which can prevent the freeze-dried ball 100 from getting stuck in the buffer channel 11 while ensuring that only a single freeze-dried ball 100 is allowed to pass through the buffer channel 11. For example, the width of the buffer channel 11 is 0.2 mm larger than the diameter of the freeze-dried ball 100.

[0064] In an alternative embodiment, see Figure 2 The detection mechanism includes a first detection member 4 and a second detection member 5, and the first detection member 4 and the second detection member 5 are respectively used to detect whether there are freeze-dried balls 100 in the two adjacent freeze-dried ball buffer positions at the bottom of the buffer channel 11. Figure 3 When the first detection member 4 and the second detection member 5 both detect the presence of freeze-dried balls 100, it indicates that the first and second freeze-dried ball cache positions from the bottom to the top in the cache channel 11 both have freeze-dried balls 100, that is, there are at least two freeze-dried balls 100 in the cache channel 11, and the number of freeze-dried balls is greater than 1. At this time, the second blocking member 31 is controlled to be switched to the fourth position to connect the cache channel 11 and the unqualified channel 13, such as Figure 4 Then, the pushing mechanism is controlled to move, and at least part of the freeze-dried balls 100 in the cache channel 11 are sent to the unqualified channel 13. When the first detection member 4 detects the presence of freeze-dried balls 100, and the second detection member 5 detects the absence of freeze-dried balls 100, it indicates that there is only one freeze-dried ball 100 in the cache channel 11. At this time, the second blocking member 31 is controlled to switch to the third position, and the first blocking member 21 is controlled to switch to the second position, and the freeze-dried balls 100 can fall into the qualified channel 12 and enter the storage container 200, completing the packaging of the freeze-dried balls 100.

[0065] For example, see Figure 3 The buffer channel 11 extends in the vertical direction, which enables the freeze-dried balls 100 in the buffer channel 11 to move more smoothly. The first detection member 4 and the second detection member 5 are arranged at intervals in the extending direction of the buffer channel 11 to respectively detect whether there are freeze-dried balls 100 in two adjacent freeze-dried ball buffer positions.

[0066] In another optional embodiment, the detection mechanism may also only include a third detection member, which is used to detect whether there are freeze-dried balls 100 in the second freeze-dried ball cache position from bottom to top in the cache channel 11. Specifically, when the third detection member detects the presence of freeze-dried balls 100, it indicates that the first and second freeze-dried ball cache positions from bottom to top in the cache channel 11 both have freeze-dried balls 100, that is, there are at least two freeze-dried balls 100 in the cache channel 11, and the number of freeze-dried balls is greater than 1. At this time, the second blocking member 31 is controlled to switch to the fourth position to connect the cache channel 11 and the unqualified channel 13. Then, the pushing mechanism is controlled to operate to send at least part of the freeze-dried balls 100 in the cache channel 11 into the unqualified channel 13. Until the third detection member detects the absence of the freeze-dried ball 100 for the first time, it indicates that there is only one freeze-dried ball 100 in the cache channel 11. At this time, the second blocking member 31 is controlled to switch to the third position, and the first blocking member 21 is controlled to switch to the second position. The freeze-dried ball 100 can fall into the qualified channel 12 and enter the storage container 200, completing the packaging of the freeze-dried ball 100.

[0067] Optionally, the first detection member 4, the second detection member 5 and the third detection member all include optical fiber detection elements, which can detect whether there are freeze-dried balls 100 in the freeze-dried ball cache position. That is, the freeze-dried ball cache position is detected by optical fiber detection, and then the number of freeze-dried balls in the cache channel 11 is determined to be 1, which has high detection efficiency and accurate detection.

[0068] For example, the optical fiber detection element is an optical fiber sensor, whose working principle is to send the incident light beam from the light source into the modulator through the optical fiber, and interact with the external measured parameters in the modulator to change the optical properties of the light, such as the intensity, wavelength, frequency, phase, polarization state, etc., to become a modulated optical signal, which is then sent to the optoelectronic device through the optical fiber and obtained after the demodulator. The optical fiber sensor has high detection sensitivity and good reliability.

[0069] In other embodiments, the first detection element 4, the second detection element 5, and the third detection element may also be infrared sensors, etc., to detect whether there are freeze-dried balls 100 in the freeze-dried ball buffer position through the infrared sensors.

[0070] Optionally, see Figure 3 and Figure 4 The qualified channel 12 extends in the vertical direction and is located directly below the cache channel 11. When the first blocking member 21 is switched to the second position, the freeze-dried balls 100 automatically fall into the qualified channel 12 under their own gravity and enter the storage container 200, which can improve the packaging efficiency.

[0071] Further, the unqualified channel 13 includes a first channel 131 and a second channel 132 connected in a bent manner, the first channel 131 is selectively connected to the cache channel 11, and the entrance of the first channel 131 is located above the entrance of the qualified channel 12, and the second channel 132 extends downward in a direction away from the first channel 131. Figure 3 As shown, in the third position, the second blocking member 31 extends into the first channel 131 to separate the cache channel 11 and the non-qualified channel 13, as shown in FIG. Figure 4 As shown, when the second blocking member 31 is in the fourth position, the first channel 131 is connected to the cache channel 11, and the entrance of the first channel 131 is located above the entrance of the qualified channel 12. Under the action of the pushing mechanism, the freeze-dried balls 100 in the cache channel 11 first enter the first channel 131, and then roll down to the second channel 132 through the first channel 131, and finally the freeze-dried balls 100 fall into the collection container for collecting the freeze-dried balls 100.

[0072] The entrance of the first channel 131 is designed to be higher than the entrance of the qualified channel 12, so that the freeze-dried balls 100 in the buffer channel 11 can smoothly enter the first channel 131, and the freeze-dried balls 100 in the buffer channel 11 can be discharged in time. Since the second channel 132 extends downward, the freeze-dried balls 100 can fall into the collection container under the action of their own gravity, thereby improving the packaging efficiency.

[0073] In this embodiment, the width of the unqualified channel 13 is slightly larger than the diameter of the freeze-dried ball 100, and only a single freeze-dried ball 100 is allowed to pass through, and the first channel 131 extends approximately horizontally and is connected to the side opening of the cache channel 11, and the side opening corresponds to the freeze-dried ball cache position at the bottom of the cache channel 11, so that the pusher mechanism drives the freeze-dried ball 100 at the bottom of the cache channel 11 into the first channel 131 each time it moves, until only one freeze-dried ball 100 is left in the cache channel 11. The above structural design allows freeze-dried balls 100 of different diameters to enter the unqualified channel 13 from the bottom of the cache channel 11, meeting the packaging requirements of freeze-dried balls 100 of different sizes and improving the versatility of the freeze-dried ball screening device.

[0074] In other embodiments, the side opening may be set at the second freeze-dried ball cache position of the cache channel 11 from the bottom to the top, and the first channel 131 may be connected to the side opening of the cache channel 11, so that the excess freeze-dried balls 100 of the cache channel 11 can be discharged to the unqualified channel 13.

[0075] Optionally, see Figure 4The second channel 132 is connected to the first channel 131 in an arc transition, which can reduce the resistance of the freeze-dried ball 100 moving from the first channel 131 to the second channel 132, prevent the freeze-dried ball 100 from getting stuck, and improve the ball dropping efficiency. At the same time, the arc-shaped transition between the first channel 131 and the second channel 132 can prevent the freeze-dried ball 100 from being scratched and damaged.

[0076] In other embodiments, the unqualified channel 13 may also be a straight channel extending at an angle, and the entrance of the inclined straight channel is directly connected to the side opening of the cache channel 11 .

[0077] Optionally, see Figure 1 , Figure 2 and Figure 3 The freeze-dried ball screening device also includes a first driving member 22 and a first moving seat 23. The device body 1 is provided with a first guide hole 14 connected to the qualified channel 12. One end of the first blocking member 21 is fixedly connected to the first moving seat 23, and the other end is movably arranged in the first guide hole 14. The output end of the first driving member 22 is connected to the first moving seat 23, and is used to drive the first moving seat 23 to drive the first blocking member 21 to switch between the first position and the second position. In the first position, the first blocking member 21 passes through the first guide hole 14 and extends into the qualified channel 12 to separate the qualified channel 12 from the cache channel 11. In the second position, the first blocking member 21 retracts into the first guide hole 14 to avoid the qualified channel 12, so that the qualified channel 12 is connected to the cache channel 11. The first guide hole 14 can limit the moving direction of the first blocking member 21 and improve the moving stability of the first blocking member 21. The way in which the first driving member 22 drives the first blocking member 21 to move linearly is simple to control and easy to implement.

[0078] In this embodiment, the first blocking member 21 is a cantilever disposed on the first movable seat 23. The cross-sectional dimensions of the first blocking member 21 are substantially the same as the cross-sectional dimensions of the qualified channel 12, and can effectively separate the qualified channel 12 from the cache channel 11. Furthermore, the first blocking member 21 and the first movable seat 23 are integrally formed, the connection is reliable, and the processing is convenient. In other embodiments, the first blocking member 21 can also be designed to be detachably connected to the first movable seat 23, for example, by fastening with screws.

[0079] Optionally, see Figure 2 The output end of the first driving member 22 is provided with a first floating joint 221, and the first floating joint 221 is connected to the first moving seat 23. The first floating joint 221 can eliminate the error caused by eccentricity or insufficient parallelism between the first driving member 22 and the first moving seat 23, improve the moving accuracy of the first moving seat 23, and ensure that the first blocking member 21 can accurately switch between the first position and the second position.

[0080] Optionally, see Figure 1 , Figure 2 , Figure 3 and Figure 4 , the freeze-dried ball screening device also includes a second driving member 32 and a second moving seat 33, a second guide hole (not shown) connected to the unqualified channel 13 is provided on the device body 1, one end of the second blocking member 31 is fixedly connected to the second moving seat 33, and the other end is movably arranged in the second guide hole, and the output end of the second driving member 32 is connected to the second moving seat 33, which is used to drive the second moving seat 33 to drive the second blocking member 31 to switch between the third position and the fourth position. In the third position, the second blocking member 31 passes through the second guide hole and extends into the unqualified channel 13 to separate the unqualified channel 13 from the cache channel 11. In the fourth position, the second blocking member 31 retracts into the second guide hole to avoid the unqualified channel 13, so that the unqualified channel 13 is connected to the cache channel 11. The setting of the second guide hole can guide the movement of the second blocking member 31 and improve the movement stability of the second blocking member 31.

[0081] In this embodiment, the second blocking member 31 is a cantilever disposed on the second movable seat 33, and the cross-sectional dimension of the second blocking member 31 is substantially the same as the cross-sectional dimension of the non-qualified channel 13, which can effectively separate the non-qualified channel 13 from the cache channel 11. Furthermore, the second blocking member 31 and the second movable seat 33 are integrally formed, the connection is reliable, and the processing is convenient.

[0082] Optionally, see Figure 1 The output end of the second driving member 32 is provided with a second floating joint 321, and the second floating joint 321 is connected to the second moving seat 33. The second floating joint 321 can eliminate the error caused by eccentricity or insufficient parallelism between the second driving member 32 and the second moving seat 33, improve the moving accuracy of the second moving seat 33, and ensure that the second blocking member 31 can accurately switch between the third position and the fourth position.

[0083] In this embodiment, the freeze-dried ball screening device also includes a control module, and the detection mechanism, the first drive member 22, the second drive member 32 and the pusher mechanism are all connected to the control module in communication, and the control module can control the opening and closing of the first drive member 22, the second drive member 32 and the pusher mechanism according to the information detected by the detection mechanism, so as to realize automatic control of the packaging and screening of the freeze-dried balls 100. Exemplarily, the first drive member 22 and the second drive member 32 are linear drive mechanisms such as a cylinder and an electric cylinder.

[0084] In other embodiments, the first blocking member 21 may also be switched between the first position and the second position by rotation, and the second blocking member 31 may also be switched between the third position and the fourth position by rotation.

[0085] Optionally, see Figure 2 and Figure 3The pushing mechanism includes a blowing device 6, an air inlet space 15 is provided on the equipment body 1, an air outlet end of the blowing device 6 is connected to the air inlet space 15, and the air inlet space 15 has an air blowing port 151 extending obliquely toward the non-qualified channel 13, and the air blowing device 6 can blow the freeze-dried balls 100 in the cache channel 11 into the non-qualified channel 13. After the airflow generated by the blowing device 6 enters the air inlet space 15, it can be blown toward the freeze-dried balls 100 in the cache channel 11 through the air blowing port 151, so that the freeze-dried balls 100 are moved into the non-qualified channel 13 under the driving action of the airflow. Since the air blowing port 151 extends obliquely toward the non-qualified channel 13, the airflow can always flow in the direction of the non-qualified channel 13, so as to drive the freeze-dried balls 100 to smoothly enter the non-qualified channel 13 from the cache channel 11, thereby improving the packing efficiency of the freeze-dried balls 100.

[0086] By driving the freeze-dried balls 100 from the buffer channel 11 to the unqualified channel 13 by blowing air, foreign objects can be prevented from directly contacting the freeze-dried balls 100, thereby preventing the freeze-dried balls 100 from being contaminated. At the same time, the airflow driving method is relatively gentle, which can prevent the freeze-dried balls 100 from being damaged or falling off, thereby ensuring the quality of the freeze-dried balls 100.

[0087] In this embodiment, refer to Figure 3 and Figure 4 Two blowing ports 151 are arranged at intervals in the stacking direction of the freeze-dried balls 100, one of which is close to the bottom of the buffer channel 11. The airflow output by the blowing port 151 can effectively act on the freeze-dried balls 100 at the bottom of the buffer channel 11, so that the freeze-dried balls 100 quickly enter the unqualified channel 13, and improve the efficiency of the freeze-dried balls 100 being discharged from the buffer channel 11. The airflow output by the other blowing port 151 can act on the freeze-dried balls 100 from above, blocking the freeze-dried balls 100, preventing the freeze-dried balls 100 from moving upward along the buffer channel 11, and further ensuring that the freeze-dried balls 100 at the bottom of the buffer channel 11 can smoothly enter the unqualified channel 13.

[0088] Optionally, the interval between the two blowing ports 151 may be greater than twice the diameter of the freeze-dried ball 100 , so that the airflow output by the upper blowing port 151 can fully prevent the lower freeze-dried ball 100 from moving upward.

[0089] Exemplarily, the blowing device 6 may be an air pump or the like, as long as it can generate a stable airflow.

[0090] In other optional embodiments, the pushing mechanism may also be a push rod movably arranged on the device body 1, and the push rod can push the freeze-dried balls 100 in the cache channel 11 to move to the unqualified channel 13. Specifically, the push rod may be a push rod of a push rod motor, or the push rod may be an output rod of a cylinder. When the detection mechanism detects that the number of freeze-dried balls in the cache channel 11 is greater than 1, the push rod is controlled to move into the cache channel 11 to push the freeze-dried balls 100 into the unqualified channel 13, so that the freeze-dried balls 100 can be discharged from the cache channel 11.

[0091] Optionally, see Figure 1 , Figure 2 , Figure 3 and Figure 6 The freeze-dried ball screening device also includes a socket 7 disposed on the device body 1, and the socket 7 is configured to be connected to the discharge port 301 of the freeze-dried ball dispensing device 300. The socket 7 is provided with a feed channel 71, and the discharge port 301 is connected to the cache channel 11 through the feed channel 71. When the device is assembled, the socket 7 is connected to the discharge port 301 of the freeze-dried ball dispensing device 300, and the freeze-dried balls 100 distributed by the freeze-dried ball dispensing device 300 fall into the cache channel 11 from the feed channel 71, and then the freeze-dried balls 100 are screened by the freeze-dried ball screening device. By performing two-stage packaging screening on the freeze-dried balls 100, it can be ensured that the number of freeze-dried balls that finally enter the storage container 200 is 1, and the packaging quantity of the freeze-dried balls 100 is accurately controlled to ensure that the dosage of the freeze-dried balls 100 in each storage container 200 is accurate.

[0092] Optionally, the socket 7 includes a seat body 72 and a plug connector 73 protruding from the seat body 72. The seat body 72 is fixedly connected to the device body 1 (for example, fixed by screws). The plug connector 73 can be inserted into the discharge port 301 of the freeze-dried ball dispensing device 300. The device is assembled by plugging, and the disassembly and assembly operations are simple and the assembly efficiency is high.

[0093] Exemplarily, the socket 7 is made of SUS316B stainless steel, and the inner wall of the feed channel 71 is mirror-polished to prevent the freeze-dried balls 100 from being scratched.

[0094] Optionally, the freeze-dried ball dispensing device 300 includes a storage bin 302 and a base 303 disposed below the storage bin 302. The storage bin 302 stores freeze-dried balls to be packaged. The base 303 is provided with a dispensing channel 304. One end of the dispensing channel 304 is connected to the storage bin 302, and the other end is connected to the cache channel 11 through the discharge port 301 and the feed channel 71. The freeze-dried balls in the storage bin 302 fall into the cache channel 11 after completing the primary dispensing in the dispensing channel 304, and then the secondary dispensing of the freeze-dried balls is completed through the cooperation of the first blocking member 21, the second blocking member 31, the detection mechanism and the pushing mechanism, ensuring that the dispensing dosage of the freeze-dried balls is accurate.

[0095] Optionally, the device body 1 is provided with a first discharge nozzle (not shown) at the discharge end of the qualified channel 12, and the first discharge nozzle can be inserted into the storage container 200 storing the freeze-dried balls 100. The first discharge nozzle can separate the freeze-dried balls 100 from the outside world, so that the freeze-dried balls 100 in the qualified channel 12 do not contact with foreign objects during the process of entering the storage container 200, further preventing the freeze-dried balls 100 from being contaminated. At the same time, the first discharge nozzle can also guide the freeze-dried balls 100 to fall accurately into the storage container 200, thereby improving the packaging efficiency of the freeze-dried balls 100.

[0096] Optionally, see Figure 1 and Figure 3 The equipment body 1 is provided with a second discharge nozzle 8 at the discharge end of the non-qualified channel 13, and the second discharge nozzle 8 can be inserted into the collection container for collecting the freeze-dried balls 100. The second discharge nozzle 8 can separate the freeze-dried balls 100 from the outside world, so that the freeze-dried balls 100 in the non-qualified channel 13 do not contact with foreign objects during the process of entering the collection container, prevent the freeze-dried balls 100 from being contaminated, and ensure that the collected freeze-dried balls 100 can still be used normally. At the same time, the second discharge nozzle 8 can also guide the freeze-dried balls 100 to fall accurately into the collection container, thereby improving the collection efficiency of the freeze-dried balls 100.

[0097] Optionally, see Figure 1 and Figure 2 The freeze-dried ball screening device further includes a loading plate 9 disposed on the device body 1, the loading plate 9 being located below the discharge end of the qualified channel 12 and being used to fix the storage container 200 storing the freeze-dried balls 100. The loading plate 9 provides a mounting base for the storage container 200, so that the storage container 200 can always face the discharge end of the qualified channel 12, ensuring that the dosage of the freeze-dried balls 100 in each storage container 200 is accurate, ensuring the consistency of product quality, and improving production efficiency.

[0098] In this embodiment, refer to Figure 1 The loading plate 9 includes a first plate 91 and a second plate 92 bent at a substantially right angle. The first plate 91 is fixedly connected to the device body 1 (for example, fixedly connected by screws). The second plate 92 is provided with a card slot 921. The storage container 200 is exemplarily a vial. The mouth of the vial can be carded in the card slot 921 to fix the vial. Furthermore, the opening of the card slot 921 is horn-shaped, so that the mouth of the vial can be smoothly carded into the card slot 921.

[0099] In other embodiments, the storage container 200 may also be a freeze-dried reaction disk, an 8-tube strip, a PCR tube, or other container.

[0100] Optionally, see Figure 1The freeze-dried ball screening device further includes an observation window 10 detachably arranged on the device body 1. The device body 1 is provided with a cache channel 11, a qualified channel 12, and a non-qualified channel 13 on one side facing the observation window 10. The observation window 10 is made of a transparent material, and the freeze-dried balls 100 in the cache channel 11, the qualified channel 12, and the non-qualified channel 13 can be observed through the observation window 10. With such an arrangement, the staff can observe the status of the freeze-dried balls 100 in real time, and can find faults in time and take corresponding measures.

[0101] Exemplarily, the observation window 10 is made of a transparent acrylic material, which has a good perspective effect, strong structural strength and a long service life.

[0102] Furthermore, the observation window 10 can be detachably mounted on the device body 1, so that the cache channel 11, the qualified channel 12 and the unqualified channel 13 can be cleaned after the observation window 10 is removed. In this embodiment, a magnetic attraction member (such as a magnet) is provided on the observation window 10, and the observation window 10 is magnetically fixed to the device body 1 by the magnetic attraction member, so that the disassembly and assembly operation is simple, and quick disassembly and assembly can be achieved, thereby improving the efficiency of cleaning and maintenance.

[0103] In other embodiments, the observation window 10 may also be fixed to the device body 1 by fasteners such as screws, and the observation window 10 may also be disassembled.

[0104] like Figure 7 As shown, this embodiment also provides a freeze-dried ball screening method, using the freeze-dried ball screening device as described above, the freeze-dried ball screening method includes the following steps:

[0105] S1, determine whether the number of freeze-dried balls in the cache channel 11 is 1, if so, execute S2, if not, execute S3;

[0106] S2, controlling the first blocking member 21 to switch to the second position, and controlling the second blocking member 31 to remain at the third position, so that the freeze-dried balls 100 enter the qualified channel 12;

[0107] S3, controlling the first blocking member 21 to remain in the first position, controlling the second blocking member 31 to switch to the fourth position, and controlling the pushing mechanism to move so as to send at least part of the freeze-dried balls 100 in the buffer channel 11 into the unqualified channel 13;

[0108] S4. Repeat step S1.

[0109] In step S1, the first detection member 4 and the second detection member 5 determine whether the number of freeze-dried balls in the cache channel 11 is 1. In steps S2 and S3, the first blocking member 21 is driven to switch between the first position and the second position by the first driving member 22, and the second blocking member 31 is driven to switch between the third position and the fourth position by the second driving member 32. The pushing mechanism can be a blowing device 6, which drives the freeze-dried balls 100 into the unqualified channel 13 by blowing.

[0110] Specifically, the first detection member 4 and the second detection member 5 are respectively used to detect whether there are freeze-dried balls 100 in the two adjacent freeze-dried ball cache positions at the bottom of the cache channel 11. When the first detection member 4 and the second detection member 5 both detect the presence of freeze-dried balls 100, the first blocking member 21 is maintained in the first position, or the first driving member 22 is controlled to operate to move the first blocking member 21 to the first position, and the second driving member 32 is controlled to operate to move the second blocking member 31 from the third position to the fourth position to connect the unqualified channel 13 and the cache channel 11. Then, the blowing device 6 is controlled to operate to send at least part of the freeze-dried balls 100 in the cache channel 11 into the unqualified channel 13.

[0111] Among them, the blowing device 6 can be controlled to operate intermittently, and each operation can blow a freeze-dried ball 100 at the bottom of the cache channel into the unqualified channel 13. When the first detection component 4 detects the presence of freeze-dried balls 100 and the second detection component 5 detects the absence of freeze-dried balls 100, the blowing device 6 is controlled to stop operating, the second blocking component 31 is controlled to switch to the third position, and then the first blocking component 21 is controlled to switch from the first position to the second position, so that the qualified channel 12 is connected to the cache channel 11. At this time, the freeze-dried balls 100 enter the qualified channel 12 under the action of their own gravity to complete the packaging.

[0112] Optionally, the first detection member 4 and the second detection member 5 both include optical fiber detection elements, that is, optical fiber detection is used to detect whether there are freeze-dried balls 100 in the freeze-dried ball cache position, and then to determine whether the number of freeze-dried balls in the cache channel 11 is 1, with high detection efficiency and accuracy.

[0113] Since the freeze-dried balls 100 stacked in the cache channel 11 may be adsorbed together due to electrostatic effects, the blowing device 6 may blow two or more freeze-dried balls 100 adsorbed together into the unqualified channel 13 at one time when blowing. At this time, the number of freeze-dried balls detected by the detection mechanism may be 0.

[0114] To prevent the freeze-dried ball screening device from working ineffectively, in this embodiment, optionally, refer to Figure 8 , before executing step S3, the following steps are also included:

[0115] S30, determining whether the number of freeze-dried balls in the cache channel 11 is 0, if so, entering the next freeze-dried ball screening cycle, if not, executing step S3.

[0116] That is, when it is determined that there are no freeze-dried balls 100 in the buffer channel 11, the equipment of the previous material distribution process is controlled to feed the buffer channel 11, and the next freeze-dried ball screening cycle is entered. Specifically in this embodiment, when the number of freeze-dried balls in the buffer channel 11 is 0, the freeze-dried ball distribution device 300 is controlled to operate, drop balls into the buffer channel 11, and then execute step S1, and the cycle is repeated to achieve the secondary distribution of freeze-dried balls, ensuring that the packaged dosage of freeze-dried balls is accurate.

[0117] Furthermore, an alarm device may be provided on the device body 1. When the detection mechanism fails to detect the presence of freeze-dried balls 100 in the buffer channel 11 for a long time, the alarm device sends an alarm signal to prompt the staff to check and clear the fault. For example, the alarm device may be an indicator light or a voice alarm module.

[0118] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A freeze-dried ball screening device, characterized in that: include: A device body (1) is provided with a cache channel (11), a qualified channel (12) and an unqualified channel (13), wherein the cache channel (11) can selectively communicate with the qualified channel (12) or the unqualified channel (13); a first blocking member (21) movably disposed on the device body (1) so as to be switchable between a first position and a second position; when the first blocking member (21) is located at the first position, the qualified channel (12) is separated from the cache channel (11); and when the first blocking member (21) is located at the second position, the qualified channel (12) is connected to the cache channel (11); a second blocking member (31) movably disposed on the device body (1) so as to be switchable between a third position and a fourth position; when the second blocking member (31) is located at the third position, the non-qualified channel (13) is separated from the cache channel (11); and when the second blocking member (31) is located at the fourth position, the non-qualified channel (13) is connected to the cache channel (11); a detection mechanism, used for detecting the number of freeze-dried balls in the cache channel (11); when the number of freeze-dried balls in the cache channel (11) is 1, the first blocking member (21) is switched to the second position, so that the freeze-dried balls (100) in the cache channel (11) enter the qualified channel (12); A pushing mechanism is arranged on the device body (1), and when the number of freeze-dried balls in the cache channel (11) is greater than 1, the second blocking member (31) is switched to the fourth position, and the pushing mechanism sends at least part of the freeze-dried balls (100) in the cache channel (11) into the unqualified channel (13).

2. The freeze-dried ball screening device according to claim 1, characterized in that: The cache channel (11) has a plurality of freeze-dried ball cache positions arranged in sequence from bottom to top, and each of the freeze-dried ball cache positions can only accommodate a single freeze-dried ball (100); The detection mechanism comprises a first detection member (4) and a second detection member (5), wherein the first detection member (4) and the second detection member (5) are respectively used to detect whether freeze-dried balls (100) are present in two adjacent freeze-dried ball cache positions at the bottom in the cache channel (11); or, the detection mechanism comprises a third detection member, wherein the third detection member is used to detect whether freeze-dried balls (100) are present in the second freeze-dried ball cache position from the bottom to the top in the cache channel (11).

3. The freeze-dried ball screening device according to claim 1, characterized in that: The freeze-dried ball screening device also includes a first driving member (22) and a first movable seat (23), wherein the output end of the first driving member (22) is connected to the first movable seat (23), and a first guide hole (14) communicating with the qualified channel (12) is provided on the device body (1), one end of the first blocking member (21) is fixedly connected to the first movable seat (23), and the other end is movably arranged in the first guide hole (14), and when in the first position, the first blocking member (21) passes through the first guide hole (14) and extends into the qualified channel (12).

4. The freeze-dried ball screening device according to claim 1, characterized in that: The freeze-dried ball screening device also includes a second driving member (32) and a second movable seat (33), the output end of the second driving member (32) is connected to the second movable seat (33), a second guide hole connected to the unqualified channel (13) is provided on the device body (1), one end of the second blocking member (31) is fixedly connected to the second movable seat (33), and the other end is movably inserted into the second guide hole, and when in the third position, the second blocking member (31) passes through the second guide hole and extends into the unqualified channel (13).

5. The freeze-dried ball screening device according to claim 1, characterized in that: The pushing mechanism comprises an air blowing device (6), an air inlet space (15) is provided on the equipment body (1), an air outlet end of the air blowing device (6) is connected to the air inlet space (15), the air inlet space (15) has an air blowing port (151) extending obliquely toward the unqualified channel (13), and the air blowing device (6) can blow the freeze-dried balls (100) in the buffer channel (11) into the unqualified channel (13); Alternatively, the pushing mechanism comprises a push rod movably arranged on the device body (1), and the push rod is capable of pushing the freeze-dried balls (100) in the cache channel (11) to move to the unqualified channel (13).

6. The freeze-dried ball screening device according to any one of claims 1 to 5, characterized in that: The qualified channel (12) extends in a vertical direction and is located directly below the cache channel (11); the unqualified channel (13) comprises a first channel (131) and a second channel (132) connected in a bent manner, the first channel (131) is selectively connected to the cache channel (11), and the entrance of the first channel (131) is located above the entrance of the qualified channel (12), and the second channel (132) extends downward in a direction away from the first channel (131).

7. The freeze-dried ball screening device according to any one of claims 1 to 5, characterized in that: The freeze-dried ball screening device also includes a socket (7) arranged on the device body (1), and the socket (7) is configured to be connected to the discharge port (301) of the freeze-dried ball distribution device (300). A feed channel (71) is provided on the socket (7), and the discharge port (301) is connected to the cache channel (11) through the feed channel (71).

8. The freeze-dried ball screening device according to any one of claims 1 to 5, characterized in that: The equipment body (1) is provided with a first discharge nozzle at the discharge end of the qualified channel (12), and the first discharge nozzle can be inserted into a storage container (200) for storing freeze-dried balls (100); And / or, the device body (1) is provided with a second discharge nozzle (8) at the discharge end of the unqualified channel (13), and the second discharge nozzle (8) can be inserted into a collection container for collecting freeze-dried balls (100).

9. The freeze-dried ball screening device according to any one of claims 1 to 5, characterized in that: The freeze-dried ball screening device also includes a loading plate (9) arranged on the device body (1), and the loading plate (9) is located below the discharge end of the qualified channel (12) and is used to fix the storage container (200) for storing the freeze-dried balls (100).

10. The freeze-dried ball screening device according to any one of claims 1 to 5, characterized in that: The freeze-dried ball screening device further comprises an observation window (10) arranged on the device body (1); the cache channel (11), the qualified channel (12) and the unqualified channel (13) are arranged on a side of the device body (1) facing the observation window (10); the observation window (10) is made of a transparent material, and the freeze-dried balls (100) in the cache channel (11), the qualified channel (12) and the unqualified channel (13) can be observed through the observation window (10).

11. A method for screening freeze-dried balls, characterized in that: Using the freeze-dried ball screening device according to any one of claims 1 to 10, the freeze-dried ball screening method comprises the following steps: S1, determining whether the number of freeze-dried balls in the cache channel (11) is 1, if so, executing S2, if not, executing S3; S2, controlling the first blocking member (21) to switch to the second position, and controlling the second blocking member (31) to remain at the third position, so that the freeze-dried balls (100) enter the qualified channel (12); S3, controlling the first blocking member (21) to remain at the first position, controlling the second blocking member (31) to switch to the fourth position, and controlling the pushing mechanism to move so as to send at least part of the freeze-dried balls (100) in the buffer channel (11) into the unqualified channel (13); S4. Repeat step S1.

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