Telescopic manual sample loading device

Abstract

The utility model relates to the technical field of cytometers, and discloses a telescopic manual sample loading device which comprises a sample loading mechanism and a cleaning mechanism which are mounted on a bottom plate, the sample loading mechanism comprises a liftable sample loading needle, the cleaning mechanism comprises a cleaning arm and a cleaning block, and a manual sample loading mechanism is arranged below the cleaning mechanism; the manual sample loading mechanism comprises a telescopic assembly, the output end of the telescopic assembly is connected with a sliding frame body, the front end of the sliding frame body is further provided with a test tube clamp used for clamping a test tube, and the lower end of the sample loading needle can penetrate through a needle hole formed in the cleaning block to extend into the test tube. The sliding frame body can move along the cleaning arm under the driving of the telescopic assembly, so that the test tube clamp can be quickly switched between a preparation position and a working position, the mutual switching time from manual sample loading to automatic sample loading is greatly saved, and the problems that manual tool taking operation is carried out for mounting and dismounting operation, and material storage is dismounted are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cytometers, in particular to a retractable manual sample loading device. Background Art

[0002] Currently, the switching methods between the manual loading device and the automatic loading device of the flow cytometer are divided into the following types:

[0003] 1. The manual sample loader and the automatic sample loader are independent systems with complementary mechanical structures, but the liquid path system needs to be switched and connected to the same fluid focusing assembly; it has two sets of sample loading needle devices, such as Beckman DxFlex; 2. The manual sample loader needs to be removed before the automatic sample loader is installed, such as Agilent NovoCyte; 3. The manual sample loader requires manual adjustment of the mechanical structure before the automatic sample loader can be installed, such as BD FACSCanto II.

[0004] The three switching methods for manual and automatic loading devices mentioned above each have their own advantages and disadvantages, but all require varying degrees of human intervention to implement. First, the mechanical structures of Method 1 are independent of each other and do not require any manual operation, but the switching of pipelines is often more complicated and accompanied by risks, making customers less willing to perform this operation; second, Method 2 is the switching method used by most flow cytometers. It only requires simple disassembly and fixation to achieve, but this still requires customers to use tools to operate, which is less risky than Method 1 and has higher repeatability reliability; finally, Method 3 has also become the main structure used by current flow cytometer products, but this structure must be equipped with a safety structure to prevent mutual interference between the two.

[0005] Currently, manual loading devices are indispensable for flow cytometers. They can effectively solve temporary loading requirements when automatic loading fails. However, when switching to automatic loading mode, manual operations need to be performed under the guidance of the supplier. These often hide risks in biosafety and mechanical safety, and operators also want to avoid these risks.

[0006] For the switching methods between manual loading and automatic loading of the current mainstream flow cytometers in the market, most of them require manual intervention. The installation of the automatic loading device inevitably requires manual connection or disassembly because it needs to refer to the positioning of manual loading. However, the manual loading structure mostly adopts a purely mechanical structure, and therefore needs to be manually installed or disassembled, resulting in the following defects: manual intervention, the need to pay attention to the safety structure when switching the structure, and the risks of operation. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a retractable manual loading device. When manual loading is switched to automatic loading, manual disassembly or movement of the manual loading mechanism is avoided, so that the automatic loading device can be installed smoothly. The process of switching from automatic loading to manual loading is reversible, and the biological risks of switching pipelines that may be required and the mechanical safety risks caused by disassembling the device are avoided.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A retractable manual loading device comprises a loading mechanism and a cleaning mechanism mounted on a base plate, the loading mechanism comprising a lifting and lowering loading needle, the cleaning mechanism comprising a cleaning arm mounted on the base plate, a cleaning block mounted on one end of the cleaning arm, and a manual loading mechanism provided below the cleaning mechanism; the manual loading mechanism comprises a telescopic assembly, the output end of the telescopic assembly is connected to a sliding frame, the upper part of the sliding frame is slidably sleeved on the outer side of the cleaning arm, the front end of the sliding frame is further provided with a test tube clamp for clamping a test tube, and the lower end of the loading needle can extend into the test tube through a pinhole provided on the cleaning block.

[0010] Optionally, the sliding frame includes a slider and a bracket that are integrally formed and connected, the slider is located on the upper part of the bracket, and the slider adopts a U-shaped structure and is slidably mounted on the outer side of the cleaning arm.

[0011] Optionally, hanging grooves are provided on both sides of the washing arm, and protrusions corresponding to the positions of the hanging grooves are provided on the inner side of the sliding block, and the protrusions are slidably embedded in the hanging grooves.

[0012] Optionally, a plurality of positioning holes arranged in a line are provided below the hanging slot, and two adjacent positioning holes are connected by a sliding slot; a first mounting hole corresponding to the position of the positioning hole is provided on the sliding block, a positioning rod is provided in the first mounting hole, and the end of the positioning rod can be embedded in one of the positioning holes.

[0013] Optionally, second mounting holes are provided on both sides of the test tube clamp, positioning columns are provided in the second mounting holes, one end of the positioning columns extends into the groove of the test tube clamp, and a support assembly for supporting the test tube is also provided below the test tube clamp.

[0014] Optionally, the support assembly includes a support plate, an embossed handle and a gasket, the support plate is fixedly connected to the bracket, the gasket is located above the support plate, and one end of the embossed handle is screwed from bottom to top through the support plate and connected to the gasket.

[0015] Optionally, the loading mechanism further includes a sliding component, the front end of the sliding component is connected to an assembly component for mounting the loading needle, and a driving component for driving the sliding component to rise and fall is provided on the base plate.

[0016] Optionally, the sliding assembly includes a guide rail fixedly mounted on the base plate, a slide is slidably connected to the guide rail, the side end of the slide is connected to the driving assembly, a mounting block is fixedly connected to the bottom of the slide, and the mounting block is connected to the assembly assembly.

[0017] Optionally, the assembly component includes a fixing seat connected to the mounting block, a boss is provided at the front end of the fixing seat, a fixing plate with an inverted L-shaped structure is installed at the front end of the boss, and a through hole is provided on the boss; the upper part of the sampling needle is provided with a positioning portion protruding outward, the positioning portion is located between the boss and the fixing plate and can be embedded in the through hole, a spring is provided between the top side of the fixing plate and the positioning portion, and the spring is sleeved on the sampling needle.

[0018] Optionally, the drive assembly includes a drive motor installed on the base plate, the output end of the drive motor is connected to a driving wheel, a driven wheel is provided above the driving wheel and is rotatably connected to the base plate, a synchronous belt is provided on the outer sides of the driving wheel and the driven wheel, and the synchronous belt is fixedly connected to the mounting block near an edge of the guide rail.

[0019] Beneficial effects

[0020] Driven by the telescopic assembly, the sliding frame can move along the cleaning arm, allowing the test tube clamp to quickly switch between the preparation position and the working position, greatly saving the switching time between manual and automatic loading, and avoiding the problem of manual operation with tools for installation, disassembly and storage of disassembled materials;

[0021] (2) The function of sliding the frame along the cleaning arm is realized by using the cooperation of the hanging groove and the protrusion. This structure is not only reliable but also convenient for the assembly of the manual loading mechanism; one end is open

[0022] (3) By using the cooperation between the positioning rod and the positioning hole, the position of the sliding frame can be automatically locked according to whether the loading mechanism is connected and whether the turntable is in the working position; it can be operated flexibly and conveniently through the corresponding software;

[0023] (4) The support assembly and the test tube clamp can ensure that the test tube is stably clamped, and the gasket of the support assembly can be adjusted in height by rotating the embossed handle to accommodate test tubes of various lengths, greatly improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a sample loading device according to an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of the manual loading mechanism in the embodiment of the present utility model in the preparation position;

[0026] Figure 3 This is a structural diagram of the manual loading mechanism in an embodiment of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of the cleaning mechanism in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic structural diagram of a sliding assembly in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic structural diagram of an assembly assembly in an embodiment of the present utility model;

[0030] Among them, 1. bottom plate; 2. sample loading mechanism;

[0031] 21. Sliding assembly; 211. Guide rail; 212. Slide plate; 213. Mounting block; 214. Backing plate; 215. Pressing plate; 216. Upper limit screw; 217. Lower limit screw; 218. First stopper; 219. Zero position optical coupler;

[0032] 22. Assembly component; 221. Fixing seat; 222. Support plate; 223. Boss; 224. Fixing plate; 225. Through hole; 226. Slot; 227. Second baffle; 228. Protective optocoupler;

[0033] 23. Drive assembly; 231. Driven pulley; 232. Driving pulley; 233. Synchronous belt; 234. Drive motor;

[0034] 3. Manual loading mechanism;

[0035] 31. Telescopic assembly; 32. Slider; 321. First mounting hole; 322. Positioning rod;

[0036] 33. Bracket; 34. Test tube clamp; 341. Groove; 342. Second mounting hole; 343. Positioning column;

[0037] 35. Support plate; 36. Embossed handle; 37. Gasket;

[0038] 4. Cleaning mechanism; 41. Cleaning arm; 42. Cleaning block; 43. Pinhole; 44. Hanging slot; 45. Slide slot; 46. Positioning hole;

[0039] 5. Sample adding needle; 51. Positioning part; 52. Spring. DETAILED DESCRIPTION

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0041] Example 1

[0042] like Figure 1 As shown, a retractable manual loading device includes a loading mechanism 2, a manual loading mechanism 3 and a cleaning mechanism 4. The loading mechanism 2 and the cleaning mechanism 4 are both mounted on a base plate 1, and the manual loading mechanism 3 is arranged below the cleaning mechanism 4; and when the manual loading mechanism 3 is in the ready position (such as Figure 2 As shown), the sample loading mechanism 2 can cooperate with the existing automatic sample loading mechanism to complete the corresponding work, such as a turntable; when the manual sample loading mechanism 3 is in the working position, the flow tube can be manually loaded with samples, and then the sample loading mechanism 2 performs the corresponding work.

[0043] Specifically, the sample loading needle 5 of the sample loading mechanism 2 can be raised and lowered and penetrates the cleaning mechanism 4. The test tube clamp 34 of the manual sample loading mechanism 3 can automatically extend and retract to switch between a standby position and a retracted position. When switched to the standby position, the sample loading mechanism 2 cooperates with the corresponding turntable to load the sample. When switched to the working position, the flow tube can be manually loaded into the test tube clamp 34 for manual loading. This device significantly reduces the switching time between manual and automatic loading, and eliminates the need for manual tool manipulation for installation and removal operations and storage of disassembled materials.

[0044] like Figure 1 、 Figure 5 、 Figure 6 As shown, the loading mechanism 2 includes a sliding component 21, an assembly component 22, a driving component 23 and a loading needle 5; the assembly component 22 is arranged at the front end of the sliding component 21 and is used to install the loading needle 5, and the driving component 23 is arranged on the base plate 1 and is used to drive the sliding component 21 to move up and down, thereby driving the loading needle 5 to complete the lifting action. As the loading needle 5 moves up and down, its end can be embedded in or out of the flow tube.

[0045] As mentioned above, the sliding assembly 21 includes a guide rail 211 fixedly mounted on the base plate 1, a slide 212 is slidably connected to the guide rail 211, the side end of the slide 212 is connected to the driving assembly 23, the bottom of the slide 212 is fixedly connected to a mounting block 213, and the mounting block 213 is connected to the assembly assembly 22.

[0046] A slide is slidably mounted on the guide rail 211, and the slide plate 212 is fixedly connected to the slide plate. Driven by the driving component 23, the slide plate 212 can drive the assembly component 22 to move up and down along the guide rail 211 through the mounting block 213. Its function is to ensure the stability of the up and down movement of the sample injection needle 5 and avoid deviation in the movement trajectory of the sample injection needle 5.

[0047] The assembly component 22 includes a fixing base 221 connected to the mounting block 213, a boss 223 is provided at the front end of the fixing base 221, a fixing plate 224 with an inverted L-shaped structure is installed at the front end of the boss 223, and a through hole 225 is opened on the boss 223; the upper part of the sampling needle 5 is provided with a positioning portion 51 protruding outward, the positioning portion 51 is located between the boss 223 and the fixing plate 224 and can be embedded in the through hole 225, a spring 52 is provided between the top side of the fixing plate 224 and the positioning portion 51, and the spring 52 is sleeved on the sampling needle 5.

[0048] Under the constraints of the through hole 225, the positioning portion 51 and the fixing plate 224, when the tip of the sample adding needle 5 touches the bottom or is blocked during the downward movement, the positioning portion 51 disengages from the through hole 225 and moves upward, and together with the fixing plate 224 compresses the spring 52 to achieve the effect of shock absorption and energy absorption, thereby avoiding collision between the sample adding needle 5 and the test tube or other parts, which may cause damage to parts.

[0049] The driving assembly 23 includes a driving motor 234 installed on the base plate 1, and the output end of the driving motor 234 is connected to the driving wheel 232. A driven wheel 231 is provided above the driving wheel 232 and is rotatably connected to the base plate 1. The outer sides of the driving wheel 232 and the driven wheel 231 are matched with a synchronous belt 233, and the synchronous belt 233 is fixedly connected to the mounting block 213 near one edge of the guide rail 211.

[0050] Both sides of the synchronous belt 233 are parallel to the guide rail 211. The driving motor 234 is preferably a servo motor. Under its drive, the synchronous belt 233 rotates around the driving wheel 232 and the driven wheel 231, and its two sides rise or move down in opposite directions respectively. The side close to the guide rail 211 can drive the mounting block 213 to move along the length direction of the guide rail 211.

[0051] The synchronous belt 233 is a transmission component that enables the sample adding needle 5 to move up and down, so that the sample adding needle 5 can move up and down quickly and accurately, and the stroke can also be defined according to the length of the sample adding needle 5.

[0052] like Figure 3-Figure 4As shown, the cleaning mechanism 4 includes a cleaning arm 41 mounted on the base plate 1. A cleaning block 42 is mounted at one end of the cleaning arm 41, and a pinhole 43 is formed in the cleaning block 42. The cleaning mechanism 4 utilizes existing technology to clean the outer and inner walls of the sample injection needle 5. It comprises the cleaning block 42 and the cleaning arm 41. These components are fixed structures, and the sample injection needle 5 needs to pass through the pinhole 43. This cleaning mechanism primarily cleans the lower end needle tip and outer wall of the sample injection needle 5. Simultaneously, the inner wall of the sample injection needle 5 is backwashed with cleaning fluid, and a diaphragm pump then aspirates the waste liquid.

[0053] like Figure 1-Figure 3 As shown, the manual loading mechanism 3 includes a telescopic component 31, the output end of the telescopic component 31 is connected to a sliding frame, the upper part of the sliding frame is slidably sleeved on the outside of the cleaning arm 41, and the front end of the sliding frame is also provided with a test tube clamp 34 for clamping the test tube, and the lower end of the sample addition needle 5 can pass through the pinhole 43 provided on the cleaning block 42 and extend into the test tube.

[0054] The telescopic assembly 31 uses a micro electro-hydraulic push rod. When its output end is extended, the sliding frame slides along the cleaning arm 41 toward the working position until it reaches the working position, that is, the test tube on the test tube clamp 34 is directly below the pinhole 43, and manual loading begins; when its output end is retracted, the sliding frame slides along the cleaning arm 41 toward the preparation position, at which time it can be switched to automatic loading.

[0055] As mentioned above, the sliding frame includes a slider 32 and a bracket 33 that are integrally formed and connected. The slider 32 is located on the upper part of the bracket 33, and the slider 32 adopts a U-shaped structure and is slidably mounted on the outside of the cleaning arm 41; hanging grooves 44 are provided on both sides of the cleaning arm 41, and a protrusion corresponding to the position of the hanging groove 44 is provided on the inner side of the slider 32, and the protrusion is slidably embedded in the hanging groove 44.

[0056] One end of the hanging groove 44 is open and the other end is closed; the open end is to facilitate the U-shaped slider 32 to be put on the cleaning arm 41 so that its protrusion is embedded in the hanging groove 44, and the closed end can play a role of limiting. Before assembling the cleaning block 42, the slider 32 is installed from the front end hanging groove 44 of the cleaning arm 41, and then the cleaning block 42 and other parts are installed.

[0057] Furthermore, a plurality of positioning holes 46 arranged in a line are provided below the hanging groove 44, and two adjacent positioning holes 46 are connected by a slide groove 45; a first mounting hole 321 corresponding to the position of the positioning hole 46 is provided on the slider 32, and a positioning rod 322 is provided in the first mounting hole 321, and the end of the positioning rod 322 can be embedded in one of the positioning holes 46.

[0058] There are three positioning holes 46 on each side, corresponding to the preparation position, working position, and intermediate position of the manual loading mechanism 3. The end of the positioning rod 322 includes a positioning bead that can retract when subjected to axial force. When the slider 32 moves to the corresponding position, the positioning bead at the end of the positioning rod 322 extends and embeds into the positioning hole 46, achieving the purpose of position locking. When the slider 32 moves, it is squeezed inward by the end surface of the slide 45, causing the positioning rod 322 to move along the slide 45. In addition to the inherent stroke of the electro-hydraulic push rod, the positioning bead structure is also added to make the working position and preparation position more accurate.

[0059] In addition, second mounting holes 342 are provided on both sides of the test tube clamp 34, and positioning columns 343 are provided in the second mounting holes 342. One end of the positioning columns 343 extends into the groove 341 of the test tube clamp 34, and a support component for supporting the test tube is also provided below the test tube clamp 34.

[0060] The positioning column 343 has the same structure as the positioning rod 322, and both have retractable positioning beads at the end. There are two positioning columns 343 arranged opposite to each other, and are set at a position slightly larger than the radius of the test tube. The extended distance between the two positioning beads is less than the diameter of the test tube, and the retracted distance is greater than the diameter of the test tube, so that the test tube is restricted from sliding out after entering the groove 341.

[0061] Among them, the supporting assembly includes a support plate 35, an embossed handle 36 and a gasket 37. The support plate 35 is fixedly connected to the bracket 33. The gasket 37 is located above the support plate 35. One end of the embossed handle 36 is screwed from bottom to top and passes through the support plate 35 to connect with the gasket 37.

[0062] The support assembly and the test tube clamp 34 can ensure that the test tube is stably clamped, and the gasket 37 of the support assembly can be adjusted in height by rotating the embossed handle 36 to accommodate test tubes of various lengths, greatly improving the applicability of the device.

[0063] Working principle:

[0064] Install the manual loading device on the external rack, fix the sliding frame in the ready position, fix the micro electro-hydraulic push rod in the unextended state, and debug whether the push-out and zeroing states of the micro electro-hydraulic push rod are at the positioning point; finally, switch between manual loading and automatic loading, and repeatedly test the switching operation to ensure the reliability of the function.

[0065] Driven by the telescopic component 31, the slider 32 drives the bracket 33 to slide along the length direction of the hanging groove 44. When the test tube clamp 34 on one side of the bracket 33 moves to the working position, manual loading is switched. At this time, the sample adding needle 5 moves up and down, and its end can be inserted into the test tube on the test tube clamp 34; when the test tube clamp 34 moves to the preparation position, automatic loading is switched. At this time, the automatic loading mechanism provides the test tube to the sample adding mechanism 2, such as a turntable; driven by the drive motor 234, the synchronous belt 233 rotates, and drives the assembly component 22 to move along the guide rail 211 through the slide plate 212 and the mounting block 213, thereby realizing the up and down movement of the sample adding needle 5.

[0066] Example 2

[0067] On the basis of the first embodiment, the present invention further proposes a connection structure between each sliding component 21 and the assembly component 22 and the driving component 23 .

[0068] like Figure 5-Figure 6 As shown, to connect the sliding assembly 21 and the assembly assembly 22, two supporting plates 222 are disposed opposite each other at the rear end of the fixing base 221. The mounting block 213 is located between and connected to the two supporting plates 222. The supporting plates 222 have elongated holes through which screws pass to securely connect the mounting block 213 and the supporting plates 222.

[0069] Since the sample adding needle 5 must remain coaxial with the pinhole 43 of the cleaning block 42, the vertical accuracy of the sample adding needle 5 can be guaranteed and accurate sample addition can be achieved; therefore, the length direction of the long waist hole is perpendicular to the bottom plate 1, so that the position of the sample adding needle 5 can be adjusted in the horizontal direction, thereby ensuring that the sample adding needle 5 and the pinhole 43 remain coaxial.

[0070] like Figure 5 As shown, for the connection between the sliding assembly 21 and the driving assembly 23, a pad 214 and a pressure plate 215 parallel to the synchronous belt 233 are provided on the side of the fixed seat 221. The pad 214 is fixedly connected to the fixed seat 221. One side of the synchronous belt 233 passes between the pad 214 and the pressure plate 215, and the pressure plate 215 is fixedly installed on the pad 214 by screws to fix the synchronous belt 233 and the fixed seat 221 together.

[0071] Example 3

[0072] On the basis of the first and second embodiments, the present invention further proposes a structure for protecting equipment from collision damage.

[0073] like Figure 5As shown, a zero position optical coupler 219 is also fixedly installed on the top of the base plate 1, and a first baffle 218 is installed on the slide 212 at a position corresponding to the zero position optical coupler 219. When the slide 212 moves to the top starting position, the first baffle 218 interacts with the zero position optical coupler 219; the zero position optical coupler 219 and the first baffle 218 are set zero position sensors for detecting the position of the sliding component 21 in the device.

[0074] An upper limit screw 216 and a lower limit screw 217 are fixedly installed on the base plate 1. The two screws are respectively close to the two ends of the guide rail 211. When the slide 212 moves to the limit position, the slide installed on the guide rail 211 contacts the corresponding screws, thereby achieving limitation.

[0075] In addition to the optocoupler at the starting position, two M3 screws are also set on the side of the guide rail 211 to provide mechanical protection for the travel limit; the upper limit protects the mechanical impact between the slide 212 and the driven wheel 231; the lower limit protects the mechanical impact of the bottom of the sampling needle 5.

[0076] First, assemble the driven wheel 231, the driving wheel 232, the synchronous belt 233 and the driving motor 234 on the base plate 1 to form a driving assembly 23 with a transmission structure; then assemble a linear guide rail 211, set the upper limit screw 216 and the lower limit screw 217 to limit the slide plate 212 from sliding out and perform upper and lower mechanical limits on the actual stroke; the mounting block 213 is used to connect the assembly component 22, the pad 214 and the pressure plate 215 are used to connect the synchronous belt 233 to make the movement of the slide plate 212 consistent with the synchronous belt 233, and the zero position optical coupler 219 and the first baffle 218 are set as zero position sensors.

[0077] like Figure 1 、 Figure 6 As shown, the fixing base 221 is an L-shaped structure, which is an integrally formed structure with the support plate 222 and the boss 223. A slot 226 is provided on the fixing base 221, and a second blocking piece 227 is inserted into the slot 226. A protective optical coupler 228 corresponding to the second blocking piece 227 is also provided on the side of the fixing base 221 close to the support plate 222, and one end of the second blocking piece 227 is connected to the protective optical coupler 228, and the other end protrudes from the slot 226 and is connected to the positioning portion 51.

[0078] The sample needle 5 is installed on the boss 223 of the fixing seat 221. The sample needle 5 has a positioning part 51, a spring 52 and a second baffle 227. When the fixing plate 224 is installed, the sample needle 5 is pressed downward by the spring 52. If the needle tip hits, the sample needle 5 can bounce upward and at the same time, the second baffle 227 is turned to disengage the protective optical coupler 228, and the equipment will immediately alarm and shut down, which can effectively protect the sample needle 5. The rear end of the fixing seat 221 is a long waist hole, which can realize the front and rear position adjustment of the sample needle 5.

[0079] In summary, the advantages of this utility model are: 1. It has a relatively streamlined structure. Switching between manual and automatic loading requires only the extension and retraction of the micro-electro-hydraulic push rod. Furthermore, the position of the slide holder can be automatically locked based on whether the automatic loading device is engaged and whether the turntable is in the working position. This is a flexible and convenient software operation. 2. After the automatic loading turntable is removed, the slide holder can be pushed back to the working position for temporary manual loading, facilitating user operations in special circumstances.

[0080] It not only greatly saves the switching time between manual loading and automatic loading, avoids the problem of manual operation with tools for installation, disassembly and storage of disassembled materials; it also improves the flexibility of manual loading operation. In addition to the above-mentioned switching occasions, when a staff member uses the manual loading device alone, moving the manual loading sliding frame to the preparation position can also prevent other people's misoperation and improve the safety of equipment use. In addition, when the automatic turntable loading fails, the turntable can be removed and the manual loading sliding frame can be moved to the working position, so that manual loading can be used temporarily.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0082] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0083] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A retractable manual loading device, comprising a loading mechanism (2) and a cleaning mechanism (4) mounted on a base plate (1), wherein the loading mechanism (2) comprises a loading needle (5) capable of being raised and lowered, and the cleaning mechanism (4) comprises a cleaning arm (41) mounted on the base plate (1), wherein a cleaning block (42) is mounted at one end of the cleaning arm (41), characterized in that: A manual loading mechanism (3) is provided below the cleaning mechanism (4); The manual loading mechanism (3) includes a telescopic component (31), the output end of the telescopic component (31) is connected to a sliding frame, the upper portion of the sliding frame is slidably sleeved on the outer side of the cleaning arm (41), and the front end of the sliding frame is also provided with a test tube clamp (34) for clamping the test tube, and the lower end of the sample injection needle (5) can pass through a pinhole (43) provided on the cleaning block (42) and extend into the test tube.

2. The retractable manual sample loading device according to claim 1, characterized in that: The sliding frame comprises a slider (32) and a bracket (33) that are integrally formed and connected. The slider (32) is located on the upper part of the bracket (33). The slider (32) adopts a U-shaped structure and is slidably sleeved on the outer side of the cleaning arm (41).

3. The retractable manual sample loading device according to claim 2, characterized in that: Hanging grooves (44) are provided on both sides of the cleaning arm (41), and protrusions corresponding to the positions of the hanging grooves (44) are provided on the inner side of the slider (32), and the protrusions are slidably embedded in the hanging grooves (44).

4. The retractable manual sample loading device according to claim 3, characterized in that: A plurality of positioning holes (46) arranged in a line are provided below the hanging groove (44), and two adjacent positioning holes (46) are connected via a sliding groove (45); The slider (32) is provided with a first mounting hole (321) corresponding to the position of the positioning hole (46). A positioning rod (322) is provided in the first mounting hole (321), and the end of the positioning rod (322) can be embedded in one of the positioning holes (46).

5. The retractable manual sample loading device according to claim 4, characterized in that: Second mounting holes (342) are provided on both sides of the test tube clamp (34), and positioning columns (343) are provided in the second mounting holes (342). One end of the positioning column (343) extends into the groove (341) of the test tube clamp (34), and a support assembly for supporting the test tube is also provided below the test tube clamp (34).

6. The retractable manual sample loading device according to claim 5, characterized in that: The support assembly includes a support plate (35), an embossed handle (36) and a gasket (37), wherein the support plate (35) is fixedly connected to the bracket (33), the gasket (37) is located above the support plate (35), and one end of the embossed handle (36) is screwed from bottom to top through the support plate (35) and connected to the gasket (37).

7. The retractable manual sample loading device according to any one of claims 1 to 6, characterized in that: The sample loading mechanism (2) further comprises a sliding assembly (21), the front end of the sliding assembly (21) being connected to an assembly assembly (22) for mounting the sample loading needle (5), and a driving assembly (23) for driving the sliding assembly (21) to rise and fall is provided on the base plate (1).

8. The retractable manual sample loading device according to claim 7, characterized in that: The sliding assembly (21) includes a guide rail (211) fixedly mounted on the base plate (1), a slide plate (212) slidably connected to the guide rail (211), a side end of the slide plate (212) being connected to the driving assembly (23), a mounting block (213) being fixedly connected to the bottom of the slide plate (212), and the mounting block (213) being connected to the assembly assembly (22).

9. The retractable manual sample loading device according to claim 8, characterized in that: The assembly component (22) includes a fixing seat (221) connected to the mounting block (213), a boss (223) is provided at the front end of the fixing seat (221), a fixing plate (224) in an inverted L-shaped structure is installed at the front end of the boss (223), and a through hole (225) is opened on the boss (223); The upper portion of the sample injection needle (5) is provided with a positioning portion (51) protruding outward, and the positioning portion (51) is located between the boss (223) and the fixing plate (224) and can be embedded in the through hole (225). A spring (52) is provided between the top side of the fixing plate (224) and the positioning portion (51), and the spring (52) is sleeved on the sample injection needle (5).

10. The retractable manual sample loading device according to claim 8, characterized in that: The driving assembly (23) includes a driving motor (234) mounted on the base plate (1), an output end of the driving motor (234) is connected to a driving wheel (232), a driven wheel (231) rotatably connected to the base plate (1) is provided above the driving wheel (232), a synchronous belt (233) is provided on the outer sides of the driving wheel (232) and the driven wheel (231), and the synchronous belt (233) is fixedly connected to the mounting block (213) near an edge of the guide rail (211).

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