Sampler and sample adding device including the same

Abstract

The present invention discloses a sampler and a sampler device including the same. The sampler includes a sampler structure and a rotating structure; wherein the sampler structure is used to send out the reagent in the container docked with the sampler; the rotating structure is at least partially sleeved on the outer peripheral side of the sampler structure and is transmission-connected with the sampler structure; and the sampler structure includes a power input shaft; the rotating structure is suitable for being driven externally to rotate, thereby driving the power input shaft to rotate to send the reagent from the container to the outside. The present invention drives the sampler structure to send the reagent from the inside of the container to the outside by rotating the rotating structure and based on the transmission connection between the rotating structure and the sampler structure, so that the sampler operation is more flexible and easy to control, thereby improving the convenience of operation of the sampler as well as the sampler accuracy and sampler speed, and at the same time, during the sampler loading process, there is no need to place the sampler in the driving device, thereby effectively avoiding cross contamination of the reagent.

Description

Technical Field

[0001] The invention relates to the technical field of sample addition and metering, and in particular to a sample adder and a sample adding device comprising the same. Background Art

[0002] As is known to all, in biochemical experiments, reagents, especially powder reagents, need to be weighed and sampled frequently. At present, weighing balances are commonly used in the prior art to weigh reagents. However, weighing balances have low accuracy and large errors due to the need for manual operation. At the same time, due to manual operation, sampling is done by human sense each time, and it may be difficult to achieve the ideal weighing and sampling effect after multiple operations. Moreover, due to manual operation, reagents may fall or scatter during the movement of sampling, which not only leads to reagent waste, but also may cause reagent contamination.

[0003] Therefore, automated sample loading equipment has received extensive attention from experimenters in recent years, such as an automated powder loading device, which can deliver powder reagents from the interior of a container to a reagent outlet of the loading device. Typically, the powder loading device includes a rotatable screw that penetrates the container and is suitable for delivering the powder reagent outward when rotating.

[0004] However, currently, when the sampler is in use, it needs to be placed in a device that can provide a screw rotation drive. There are problems such as large equipment size, inconvenient use, difficult to control the sample addition speed and sample addition accuracy, and the built-in sampler device leads to a complex structure and easy to cause cross contamination, especially for the use scenario of small-dose discharging. Summary of the invention

[0005] The object of the present invention is to provide a sample injector and a sample injecting device including the same, so as to solve the defects in the prior art such as the sample injector being inconvenient to use, the sample injecting speed and the sample injecting accuracy being difficult to control, the sample injector being built-in resulting in a large device size and prone to reagent cross contamination.

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

[0007] A sample injector comprises a sample injector structure and a rotating structure; the sample injector structure is used to send out a reagent in a container docked with the sample injector; the rotating structure is at least partially sleeved on the outer circumference of the sample injector structure and is transmission-connected to the sample injector structure; and the sample injector structure comprises a power input shaft; the rotating structure is suitable for being driven externally to rotate, thereby driving the power input shaft to rotate to send the reagent out of the container.

[0008] By adopting this technical solution, the user can hold the sample injector and rotate the rotating structure. Based on the transmission connection between the rotating structure and the sample injector, the rotation of the rotating structure is used as power to drive the sample injector to rotate and send the reagent from the inside of the container to the outside. This makes the sample injector operation more flexible and easy to control, thereby improving the operating convenience of the sample injector and the sample injector accuracy and speed. At the same time, there is no need to place the sample injector in the driving device during the sample injecting process, which effectively avoids cross contamination of reagents.

[0009] Preferably, the outer surface of the rotating structure has external teeth.

[0010] This technical solution, on the one hand, increases the friction between the user's fingers and the outer surface of the rotating structure by setting external teeth on the outer surface of the rotating structure, thereby reducing the difficulty of manual rotation. On the other hand, the rotating structure can not only rotate through the contact of the user's fingers, but also can rotate by meshing with the gears of other external power sources, so as to further expand the use scenarios of the sampler and make the driving scheme of the sampler more diverse.

[0011] Preferably, the rotating structure includes a first rotating wheel and a second rotating wheel which are connected to each other and arranged coaxially, the first rotating wheel is sleeved on the outer peripheral side of the sample loading structure, the second rotating wheel is transmission-connected to the power input shaft, and the diameter of the first rotating wheel is greater than the diameter of the second rotating wheel.

[0012] By adopting this technical solution, the external driving force can be transmitted as power input to the sample loading structure through the coaxially arranged first rotating wheel and the second rotating wheel to drive its power input shaft to rotate, thereby realizing reagent delivery. For example, the user acts on the outer peripheral side of the first rotating wheel through finger movement to rotate the first rotating wheel, and the second rotating wheel is connected to the first rotating wheel and rotates synchronously with the first rotating wheel. The second rotating wheel drives the power input shaft of the sample loading structure to rotate to realize reagent delivery. In addition, since the diameter of the first rotating wheel is larger than the diameter of the second rotating wheel, the external dimensions of the second rotating wheel can be prevented from affecting the user's holding of the sample loading device and rotating the first rotating wheel. At the same time, the diameter of the first rotating wheel is larger than the diameter of the second rotating wheel, which can also make the process of pushing the rotation more labor-saving.

[0013] Preferably, the inner surface of the second rotating wheel has internal teeth, and the second rotating wheel is meshed with the sample loading structure via the internal teeth.

[0014] Preferably, the outer surface of the second rotating wheel has external teeth, and the second rotating wheel is meshed with the sample adding structure via the external teeth.

[0015] The second rotating wheel is meshed with the sample loading structure through external teeth, which reduces the difficulty of installing and processing the second rotating wheel compared to the solution of internal tooth meshing of the second rotating wheel, and is easy to process with metal, thereby increasing the service life of the rotating structure.

[0016] Preferably, the sample adder also includes an outer cover shell, which is arranged on the outer peripheral side of the sample adding structure and the rotating structure, and a rotating opening passing through the outer cover shell is provided on the surface of the outer cover shell corresponding to the setting position of the rotating structure; the rotating structure is suitable for being rotated by external drive through the rotating opening.

[0017] With this technical solution, the sample loading structure and the rotating structure are covered by an outer cover to protect the sample loading structure and the rotating structure. At the same time, a rotating opening is provided on the surface of the outer cover corresponding to the position of the rotating structure so that the rotating structure can be rotated by external drive, thereby preventing the setting of the outer cover from affecting the rotation of the rotating structure by external power (such as user's fingers, other rotating drive devices, etc.).

[0018] The present invention also provides a sample adding device, which includes a device base and the sample adder as described above; the device base includes a base body and a power source, and the sample adder is detachably connected to the base body; when the sample adder is connected to the base body, the power source is transmission-connected to the outer peripheral side of the rotating structure and is suitable for driving the rotating structure to rotate.

[0019] By adopting this technical solution and providing the sample adding device, when the sample adder is connected to the base body, the power source of the base body can be used to drive the rotating structure of the sample adder to rotate, so that the reagent is sent from the inside of the container to the outside, which improves the convenience of operation; and because the power source is connected to the outer peripheral side of the rotating structure instead of being connected to the end of the sample adding structure, it avoids the obstruction of the sample adding operation. At the same time, the base body can be disassembled relative to the sample adder, so that the sample adding operation of the sample adder can be flexibly switched between manual drive and drive by the power source located in the base body, meeting different sample adding requirements.

[0020] Preferably, the power source includes a motor and a driving wheel; the driving wheel is at least partially exposed to the outer surface of the base body so as to be suitable for transmission connection with the rotating structure; the motor is suitable for driving the driving wheel to rotate; when the sampler is connected to the base body, the driving wheel is suitable for rotating under the drive of the motor, thereby driving the rotating structure to rotate.

[0021] With this technical solution, the power source includes a motor and a driving wheel, and the motor drives the driving wheel to rotate, and the driving wheel drives the rotating structure to rotate to achieve power input. Among them, at least part of the driving wheel is exposed to the outer surface of the base body, so that during the process of connecting the sample injector to the base body, the contact relationship between the driving wheel and the rotating structure is ensured, thereby ensuring reliable power input.

[0022] Preferably, the sample adder also includes an outer cover shell and at least two container cover shells, the outer cover shell is sleeved on the outer peripheral side of the sample adding structure and the rotating structure, the two container cover shells are respectively hinged at the rear end of the outer cover shell and are suitable for flipping relative to the outer cover shell to switch between an open state and a closed state; when the two container cover shells are switched to the closed state, the two container cover shells jointly enclose to form a accommodating space to accommodate the containers; when the two container cover shells are switched to the open state, the accommodating space is opened to the outside.

[0023] By adopting this technical solution, by providing two container covers that can be flipped open and closed relative to the outer cover, the container can be protected from the influence of the external environment without affecting the difficulty of disassembling and assembling the container relative to the sampler.

[0024] Preferably, the surface of the base body has a recessed portion, and the recessed portion has a structure that matches the outer surface of the container cover; when the sample adder is connected to the base body, the recessed portion is used to receive at least part of the outer surface of the two container covers.

[0025] By adopting this technical solution, a recessed portion is provided on the surface of the base body to receive at least part of the two container covers of the sampler when the base body is connected to the sampler, so that a fool-proof design can be achieved, ensuring that the two container covers can only be installed on the base body and used in a closed state. Specifically, when the two container covers are in a flipped open state, the recessed portion on the surface of the base body and the container covers in the open state do not match each other in appearance, so that the recessed portion cannot receive part of the outer surface of the two container covers, resulting in the sampler and the base body being unable to be connected in place. This situation will also remind the user to close the two container covers before installing them on the base body, achieving the purpose of fool-proofing and effectively avoiding the situation where the two container covers are used when they are not closed.

[0026] Preferably, the device base further comprises a clamping piece extending outward from the surface of the base body, and the clamping piece is used to clamp the outer surface of the injector so that the injector can be detachably connected to the base body.

[0027] By adopting this technical solution, the detachable connection of the sampler relative to the base body is achieved by snap-fitting. Compared with other connection solutions, it has a simpler structure, is quicker to assemble and disassemble, and is more convenient to use.

[0028] Preferably, the device base also includes a switch button; the switch button is located at the rear end of the device base and is connected to the power source signal, which is used to control the start and stop of the power source, and the switch button is located at the rear end of the device base.

[0029] By adopting this technical solution, a switch button is set at the rear end of the device base, which makes it easier for the user to hold the entire sample adding device and press the switch button with the thumb to control the start and stop of the power source, thereby further improving the comfort of handheld operation and facilitating stability during the sample adding process.

[0030] Preferably, the device base further comprises a reversing button; the reversing button is arranged on the side of the device base close to the switch button and is connected to the power source signal, and is used to control the rotation direction of the power source.

[0031] By adopting this technical solution, a reversing button is arranged on the base of the device, so that the forward and reverse switching of the power source can be realized. The reversing button is arranged close to the switch button, but the orientation is different, so that the reversing button and the switch button can be operated by the thumb at the same time, and the situation that the two buttons are too close to each other and cause accidental pressing can be avoided.

[0032] Preferably, when the sample injector is connected to the base body, the reagent outlet of the sample injector relatively protrudes from the front end of the base body.

[0033] In the present technical solution, when the sample adder is connected to the device base, the reagent outlet of the sample adder protrudes relatively from the front end of the base body, which can prevent the front end of the base body of the device base from protruding too much and hindering the delivery of the reagent at the reagent outlet, thereby avoiding affecting the sample addition operation.

[0034] Compared with the prior art, the present invention has at least the following technical effects:

[0035] For example, with the present invention, the user can hold the sample injector and rotate the rotating structure, based on the transmission connection between the rotating structure and the sample injector structure, use the rotation of the rotating structure as a power input shaft to drive the sample injector structure to send the reagent out from the inside of the container, so that the sample injector operation is more flexible and easy to control, thereby improving the convenience of operation of the sample injector and the sample injector accuracy and speed. At the same time, the sample injector does not need to be placed in the driving device during the sample injector process, which not only simplifies the structural design, but also effectively avoids cross contamination.

[0036] For another example, by providing a sample adding device, when the sample adder is connected to the base body, the power source of the base body can be used to drive the rotating structure of the sample adder to rotate, so that the reagent is sent from the inside of the container to the outside, which improves the convenience of operation. At the same time, the base body can be disassembled relative to the sample adder, so that the sample adding operation of the sample adder can be flexibly switched between manual drive and drive by the base body. In addition, since the power source of the base body is connected to the outer peripheral side of the rotating structure instead of being connected to the end of the sample adding structure, it avoids interference with the sample adding operation during handheld use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the internal structure of the sample adder of Example 1 of the present invention.

[0038] Figure 2 This is a schematic diagram of the main structure of the sample adder of Example 1 of the present invention.

[0039] Figure 3 It is a schematic diagram of the longitudinal section structure of the sample injector according to Example 1 of the present invention, wherein the first channel, the second channel, the connecting channel and the outer cover shell of the sample injector are hidden.

[0040] Figure 4 It is a schematic cross-sectional structure diagram of the sample injector according to Embodiment 1 of the present invention, wherein the outer cover shell of the sample injector is hidden.

[0041] Figure 5 It is a schematic diagram showing the longitudinal section structure of the outer cover shell of the sample adder according to Example 1 of the present invention.

[0042] Figure 6 This is a schematic structural diagram of the rear end of the first rotating wheel in Example 1 of the present invention.

[0043] Figure 7 Schematic diagram of the structure of the front end of the first rotating wheel in Example 1 of the present invention.

[0044] Figure 8 This is a schematic diagram of the overall structure of the sample adder of Example 1 of the present invention (I).

[0045] Fig. 9 This is a schematic diagram of the overall structure of the sample adder of Example 1 of the present invention (II).

[0046] Fig.10 This is a schematic diagram of the structure of the equipment base of Example 3 of the present invention.

[0047] Fig.11 This is a structural schematic diagram of the process in which the sample injector of Example 3 of the present invention is about to be connected to the device base.

[0048] Fig.12It is a side view structural schematic diagram of the sample injector of Example 3 of the present invention when it is about to be connected to the equipment base.

[0049] Fig.13 It is a schematic diagram of the longitudinal section structure when the sample adder of Example 3 of the present invention is connected to the equipment base.

[0050] Fig.14 This is a schematic diagram of the cross-sectional structure of the sample injector of Example 3 of the present invention when it is connected to the equipment base.

[0051] Description of reference numerals:

[0052] Sampler 1

[0053] Container 11

[0054] Opening 111

[0055] Tail 112

[0056] End cap 113

[0057] Sample loading structure 12

[0058] Outer cover 121

[0059] Container cover 122

[0060] Reagent outlet 123

[0061] First screw rod 124, first transmission gear 1241

[0062] Second screw 125, second transmission gear 1251

[0063] Transmission rod 126, third transmission gear 1261, fourth transmission gear 1262

[0064] Rotating structure 13, external teeth 13a

[0065] The first rotating wheel 131

[0066] The second rotating wheel 132

[0067] Rotating opening 141

[0068] Protective case 15

[0069] Stabilizing gear 16

[0070] First channel 161, reagent inlet 1611

[0071] Second channel 162

[0072] Connection channel 163

[0073] Equipment base 2

[0074] Base body 21

[0075] The first recessed portion 211

[0076] Card connector 212

[0077] The second recessed portion 213

[0078] Power Source 22

[0079] First driving wheel 221

[0080] Second driving wheel 222

[0081] Motor 223

[0082] Battery 224

[0083] Switch button 23

[0084] Reversing button 24

[0085] Switch spring 25 DETAILED DESCRIPTION

[0086] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0087] Example 1

[0088] like Figure 1-Figure 9 As shown, this embodiment provides a sample injector 1 having a reagent outlet 123 for sending out the reagent. The side of each component in the sample injector 1 facing the reagent outlet 123 is defined as the front end, and the side away from the reagent outlet 123 is defined as the rear end. Figure 5 In the figure, the left side is the front end, and the right side is the back end. Figure 8 In the figure, the upper left side is the front end, and the lower right side is the rear end.

[0089] Specifically, the sample injector 1 comprises a sample injector structure 12 and a rotating structure 13. The sample injector structure 12 is used to deliver the reagent in the container 11 connected to the sample injector 1, and the rotating structure 13 is at least partially sleeved on the outer peripheral side of the sample injector structure 12 and is in transmission connection with the sample injector structure 12.

[0090] In a specific implementation, the sample loading structure 12 includes a power input shaft. The rotating structure 13 is in driving connection with the power input shaft of the sample loading structure 12. Moreover, the rotating structure 13 is adapted to be driven externally to rotate, so as to drive the power input shaft of the sample loading structure 12 to rotate and deliver the reagent in the container 11 out of the container 11.

[0091] The container 11 has an opening 111 and a tail 112 which are arranged opposite to each other, and the opening 111 is located at the front end of the container 11. The outer surface of the opening 111 is connected to the rotating structure 13; the rear end of the sample loading structure 12 extends into the interior of the container 11 through the opening 111, and is used to deliver the reagent in the container 11 from the inside to the outside through the opening 111.

[0092] In some examples, the reagent may be a powdered reagent.

[0093] In some examples, threads are provided on the outer surface of the opening 111 of the container 11 , so that the container 11 can be assembled and disassembled relative to the rotating structure 13 by screwing.

[0094] The tail portion 112 of the container 11 should be closed to prevent leakage of reagents during use. At the same time, in order to facilitate adding reagents without removing the container 11 from the sample injector 1, in some examples, the tail portion 112 of the container 11 is designed to be twisted to open, and the reagent can be added to the container 11 from the tail portion 112 by twisting and removing the end cap 113 located at the tail portion 112 of the container 11.

[0095] In some examples, the container 11 and the sample loading structure 12 are both nested inside the rotating structure 13, and the sample loading structure 12 partially extends into the container 11 to receive the reagent, making the layout of the container 11, the sample loading structure 12 and the rotating structure 13 more compact.

[0096] See also Figure 3-Figure 5 In this embodiment, the sample loading structure 12 includes a first channel 161 connected to the container 11, a first screw 124 disposed in the first channel 161, a second channel 162 staggeredly connected to the first channel 161, and a second screw 125 disposed in the second channel 162. The first channel 161 is provided with a reagent inlet 1611 connected to the container 11 to receive the reagent from the container 11, the second channel 162 is provided with a reagent outlet 123 to output the reagent from the second channel 162 to the outside, the first screw 124 is suitable for rotating to transport the reagent in the first channel 161 to the second channel 162, and the second screw 125 is also suitable for rotating to output the reagent in the second channel 162 to the outside through the reagent outlet 123.

[0097] As described above, in some examples, the container 11 and the sample loading structure 12 are both nested inside the rotating structure 13, and the sample loading structure 12 partially extends into the container 11 to receive the reagent. In a specific implementation, the first channel 161 of the sample loading structure 12 partially extends into the container 11, and the reagent inlet 1611 of the first channel 161 is completely exposed in the container 11 to receive the reagent, so that the reagent can enter the first channel 161 through the reagent inlet 1611 and be transported by the first screw 124 in the first channel 161.

[0098] In some examples, the first channel 161 and the second channel 162 are disposed parallel to each other. Accordingly, the first screw 124 and the second screw 125 are also disposed parallel to each other.

[0099] In some examples, the first channel 161 and the second channel 162 are staggeredly connected via the connecting channel 163 , and the reagent falls from the first channel 161 into the second channel 162 via the connecting channel 163 and is transported by the second screw 125 in the second channel 162 .

[0100] To facilitate reagent delivery, the connecting channel 163 is adapted to connect between the rear end of the first channel 161 and the front end of the second channel 162 .

[0101] In order to achieve the purpose of continuous reagent delivery, the first screw 124 and the second screw 125 rotate simultaneously to continuously deliver the reagent to the outside through the reagent outlet 123 along the path of the container 11, the first channel 161, the connecting channel 163 and the second channel 162.

[0102] In the present invention, the sample injector 1 drives the sample injecting structure 12 to transport the reagent through the rotating structure 13 .

[0103] As mentioned above, the rotating structure 13 is at least partially sleeved on the outer circumference of the sample loading structure 12 and is drivingly connected to the power input shaft of the sample loading structure 12. In addition, the rotating structure 13 is adapted to be driven externally to rotate, so as to drive the power input shaft of the sample loading structure 12 to rotate and deliver the reagent in the container 11 from the container 11 to the outside.

[0104] In a specific implementation, the power input shaft of the sample loading structure 12 includes a first screw 124 and a second screw 125 , and the purpose of conveying is achieved by driving the first screw 124 and the second screw 125 to rotate.

[0105] In this way, the user can hold the sample injector 1, and through the transmission connection between the rotating structure 13 and the sample injecting structure 12, the user's fingers rotate the rotating structure 13 as power to drive the power input shaft (i.e., the first screw 124 and the second screw 125) of the sample injecting structure 12 to rotate, thereby sending the reagent from the inside of the container 11 to the outside.

[0106] The above technical solution can make the sample addition operation more flexible and easy to control, thereby improving the operating convenience, sample addition accuracy and sample addition speed of the sample adder 1. At the same time, during the sample addition process, there is no need to place the sample adder 1 in a driving device, which effectively avoids cross contamination of reagents.

[0107] In order to reduce the difficulty for the user to rotate the rotating structure 13 with fingers, a concave-convex structure can be provided on the outer surface of the rotating structure 13 to increase the friction of the rotating structure 13 relative to the user's fingers, making it easier for the user to rotate the rotating structure 13 with fingers.

[0108] In some examples, the concavo-convex structure on the outer surface of the rotating structure 13 is an outer tooth 13a. On the one hand, the outer tooth 13a can be provided to increase the friction between the user's finger and the outer surface of the rotating structure 13, thereby reducing the difficulty of manual rotation. On the other hand, the rotating structure 13 can not only rotate through the contact of the user's finger, but also mesh with the gears of other external power sources to rotate, so as to further expand the use scenarios of the injector 1 and make the driving scheme of the injector 1 more diverse.

[0109] In this embodiment, the rotating structure 13 includes a first rotating wheel 131 and a second rotating wheel 132 which are connected to each other and arranged coaxially. The first rotating wheel 131 is sleeved on the outer peripheral side of the sample loading structure 12, and the second rotating wheel 132 is transmission-connected to the power input shaft of the sample loading structure 12, i.e., the first screw 124 and the second screw 125, so as to transmit external power to the first screw 124 and the second screw 125, so that the first screw 124 and the second screw 125 rotate simultaneously.

[0110] In some examples, the coaxially arranged first rotating wheel 131 and second rotating wheel 132 can realize the purpose of using the movement of the user's finger as power to input into the sample loading structure 12. Specifically, the user acts on the outer peripheral side of the first rotating wheel 131 through the movement of the finger, so that the first rotating wheel 131 rotates, and the second rotating wheel 132 is connected to the first rotating wheel 131 and rotates synchronously with the first rotating wheel 131. The power input shaft of the sample loading structure 12, i.e., the first screw 124 and the second screw 125, is driven to rotate through the second rotating wheel 132, so that the reagent is sent from the inside of the container 11 to the outside.

[0111] In this case, the rotating structure 13 can be relatively simple in structure and can be partially sleeved on the outer circumference of the sample loading structure 12 to facilitate the user's finger contact with it, and can be inwardly connected with the sample loading structure 12 to achieve transmission connection.

[0112] Reference Figure 3In this embodiment, the second rotating wheel 132 is fixedly engaged with the end of the first rotating wheel 131. Of course, in other embodiments, the first rotating wheel 131 and the second rotating wheel 132 can also be connected by other transmission methods, such as welding, bonding, meshing connection, etc.

[0113] like Figure 1 As shown, in some examples, the outer surface of the second rotating wheel 132 has external teeth, and the second rotating wheel 132 is meshed with the power input shaft of the sample loading structure 12, namely the first screw 124 and the second screw 125, through the external teeth to achieve transmission.

[0114] In order to enable the rotation of the second rotating wheel 132 to simultaneously drive the first screw 124 and the second screw 125 to rotate, a first transmission gear 1241 is sleeved on the front end of the first screw 124, and a second transmission gear 1251 is sleeved on the rear end of the second screw 125. At the same time, a transmission rod 126 is provided which is arranged relatively parallel to the first screw 124 and the second screw 125, and a third transmission gear 1261 is sleeved on the rear end of the transmission rod 126, and a fourth transmission gear 1262 is sleeved on the front end of the transmission rod 126.

[0115] Specifically, the outer teeth of the second rotating wheel 132 are meshed with the second transmission gear 1251 provided on the second screw 125 to drive the second screw 125 to rotate. At the same time, the outer teeth of the second rotating wheel 132 are also meshed with the third transmission gear 1261 provided on the transmission rod 126 to drive the transmission rod 126 to rotate. The transmission rod 126 is also meshed with the first transmission gear 1241 on the first screw 124 through the fourth transmission gear 1262 to drive the first screw 124 to rotate. In this way, the first screw 124 and the second screw 125 can be driven to rotate synchronously by the second rotating wheel 132.

[0116] Compared with other embodiments in which internal teeth are provided on the inner surface of the second rotating wheel 132 to achieve transmission with the transmission rod 126, the first screw 124 and the second screw 125, this embodiment realizes transmission by providing external teeth on the outer surface of the second rotating wheel 132, which can reduce the difficulty of installing and processing the second rotating wheel 132, so that the second rotating wheel 132 can be implemented with metal material, thereby increasing the service life of the rotating structure 13.

[0117] like Figure 3 As shown, in this embodiment, the diameter of the first rotating wheel 131 is D1, the diameter of the second rotating wheel 132 is D2, and D1>D2. In this way, the external dimensions of the second rotating wheel 132 can be prevented from affecting the user's holding of the sample injector 1 and rotating the first rotating wheel 131. At the same time, since D1>D2, the process of pushing and rotating is more labor-saving.

[0118] In some examples, such as Figure 2 As shown, the sampler 1 further includes two stabilizing gears 16, which are symmetrically arranged on both sides of the second rotating wheel 132 and respectively meshed with the outer teeth of the second rotating wheel 132, thereby stabilizing the position of the second rotating wheel 132 during rotation, and preventing the second rotating wheel 132 from being displaced, causing structural extrusion or collision. Of course, in other embodiments, the number of stabilizing gears 16 can also be three or more, so that the rotation stability of the second rotating wheel 132 can be improved by setting a plurality of stabilizing gears 16 to mesh with the outer teeth of the second rotating wheel 132.

[0119] Reference Figure 5 , Figure 8 and Fig. 9 The sample injector 1 further includes an outer cover shell 121 , which is sleeved on the outer circumference of the sample injecting structure 12 and the rotating structure 13 to protect the sample injecting structure 12 and the rotating structure 13 .

[0120] A rotation opening 141 penetrating the outer casing 121 is provided on the surface of the outer casing 121 at a position corresponding to the first rotating wheel 131 of the rotating structure 13 , so that the first rotating wheel 131 of the rotating structure 13 can be driven externally through the rotation opening 141 to rotate.

[0121] In some examples, the size of the rotating opening 141 is set to enable the user's fingers to touch the first rotating wheel 131. In this way, the user can hold the outer shell 121 and push the outer circumference of the first rotating wheel 131 exposed in the rotating opening 141 with his fingers, further improving the comfort of hand-held operation and facilitating stability during the sample addition process.

[0122] In some examples, such as Figure 8 and Fig. 9 As shown, the sample injector 1 further includes two container covers 122. The two container covers 122 are respectively hinged to the rear ends of the outer cover 121 and are symmetrically arranged relative to the outer cover 121. In a specific implementation, both container covers 122 can be flipped to both sides relative to the outer cover 121 (in this embodiment, achieved by hinge connection) to switch between an open state and a closed state.

[0123] When the two container covers 122 are switched to the closed state, the two together enclose a storage space to accommodate the container 11. When the two container covers 122 are switched to the open state, the formed storage space is open to the outside, so that the container 11 as a whole or the end cover 113 of the container 11 can be disassembled. In this way, the container 11 can be further protected from the influence of the external environment without affecting the difficulty of disassembling the container 11 relative to the rotating structure 13 of the sample injector 1.

[0124] When the container cover 122 is flipped to the open state, the tail 112 of the container 11 is exposed to the outside, and the user can also conveniently hold the tail 112 of the container 11 and remove the container 11 from the rotating structure 13 by screwing, or screw and remove the end cap 113 of the container 11 to add reagents into the container 11.

[0125] Example 2

[0126] The present embodiment provides a sample adder, and its structure is roughly similar to that of the sample adder in Example 1. The difference is that the first rotating wheel and the second rotating wheel of the sample adder in this embodiment are integrally formed, and the inner surface of the second rotating wheel has internal teeth, and the second rotating wheel is connected to the power input shafts (first screw and second screw) of the sample adding structure through the internal teeth located on the inner surface. Since it is difficult to process internal gears made of metal, in this embodiment, the second rotating wheel is made of plastic or other materials that are easy to process. At the same time, since the second rotating wheel and the first rotating wheel are made of the same material (both are plastic in this embodiment), the two can be processed by integral molding without being separately provided.

[0127] Example 3

[0128] like Figure 10-Figure 14 As shown, this embodiment also provides a sample adding device, which includes a device base 2 and the sample adding device 1 provided in embodiment 1 or 2. Fig.10 As shown, the device base 2 includes a base body 21 and a power source 22 arranged in the base body 21 .

[0129] The sample injector 1 can be disassembled relative to the base body 21. When the sample injector 1 is installed on the base body 21, the power source 22 is connected to the outer peripheral side of the rotating structure 13 by transmission. In this case, the power source 22 of the equipment base 2 can be used to drive the rotating structure 13 of the sample injector 1 to rotate, so that the reagent is sent from the inside of the container 11 to the outside, which improves the convenience of operation. In addition, since the power source 22 is connected to the outer peripheral side of the rotating structure 13 by transmission, rather than connected to the end of the sample injector structure 12, interference with the sample injecting operation is avoided. At the same time, the base body 21 can be disassembled relative to the sample injector 1, so that the sample injecting operation of the sample injector 1 can be flexibly switched between manual drive and drive by the power source 22 located in the base body 21, meeting different drive requirements.

[0130] In this embodiment, the device base 2 further includes a switch button 23 , which is connected to the power source 22 by a signal and is used to control the start and stop of the power source 22 .

[0131] In some examples, the switch button 23 is at the rear end of the device base 2, which makes it convenient for the user to hold the entire sample adding device and use the thumb to press the switch button 23 at the rear end to control the start and stop of the power source 22, further improving the comfort of handheld operation and facilitating stability during the sample adding process.

[0132] In some examples, the switch button 23 is continuously pressed during the reagent delivery process to keep the power source 22 in a continuous working state and provide continuous power.

[0133] In some examples, a switch spring 25 is further provided inside the switch button 23. When the switch button 23 is pressed, the switch spring 25 is compressed; when the switch button 23 is released from being pressed, the switch spring 25 recovers the compression and drives the switch button 23 to reset. When the switch button 23 is reset, the power source 22 stops working.

[0134] In some examples, the device base 2 also includes a reversing button 24, which is connected to the power source 22 signal and is used to control the rotation direction of the power source 22, so that the forward and reverse switching of the power source 22 can be achieved, thereby driving the power input shaft of the sample loading structure 12, namely the first screw 124 and the second screw 125 to rotate forward or reverse to meet different conveying requirements.

[0135] In some examples, the reversing button 24 is located on the side of the device base 2 and is close to the switch button 23, but the reversing button 24 and the switch button 23 are arranged in different directions. In this way, the reversing button 24 and the switch button 23 can be operated by the thumb respectively, while avoiding the situation where the two are too close to each other and cause accidental pressing.

[0136] In a specific implementation, the specific implementation of the switch button 23 and the reversing button 24 may refer to the prior art.

[0137] In this embodiment, Fig.13 As shown, when the sample injector 1 is connected to the device base 2, the reagent outlet 123 of the sample injector 1 relatively protrudes from the front end of the base body 21. This can prevent the front end of the device base 2 from being too protruding and hindering the sample injection operation.

[0138] In some examples, a protective shell 15 detachably connected to the front end of the outer cover shell 121 is further provided to protect the reagent outlet 123 .

[0139] In some examples, such as Fig.11As shown, the device base 2 also includes a pair of snap-fitting members 212 extending outward from the surface of the base body 21, which are used to cooperate with the outer surface of the sample injector 1 to achieve the purpose of snap-fitting, so that the sample injector 1 and the device base 2 can be detachably connected by mutual snap-fitting. Compared with other connection methods, snap-fitting can make the structure simpler and more convenient to use.

[0140] In some examples, the clips 212 are symmetrically arranged on the left and right sides of the base body 21, and the two clips 212 and the surface of the base body 21 together form a U-shaped structure to receive and support at least part of the sampler 1, thereby increasing the installation stability of the sampler 1 on the device base 2.

[0141] In this embodiment, the power source 22 specifically includes a motor 223, a first driving wheel 221 and a second driving wheel 222. Fig.14 As shown, the first driving wheel 221 is sleeved on the power output shaft at the front end of the motor 223, and rotates under the drive of the motor 223. The first driving wheel 221 transmits power outward by engaging with the second driving wheel 222. Among them, at least part of the second driving wheel 222 is exposed to the outer surface of the base body 21 (see Fig.11 ), and is suitable for meshing with the first rotating wheel 131 of the rotating structure 13, specifically meshing with the outer teeth 13a on the surface of the first rotating wheel 131, so as to realize the transmission of power to the rotating structure 13.

[0142] When the injector 1 is mounted on the base body 21, the second driving wheel 222 meshes with the first rotating wheel 131 of the rotating structure 13. In this way, after the injector 1 is mounted on the base body 21, the motor 223 sequentially drives the first driving wheel 221 and the second driving wheel 222 to rotate, thereby driving the first rotating wheel 131 to rotate through the rotation of the second driving wheel 222, so as to realize the operation of the injector 1 and send the reagent from the inside of the container 11 to the outside.

[0143] In some examples, the speed of the motor 223 can be controlled based on the degree of pressing the switch button 23, thereby controlling the speed of the rotating structure 13, and then controlling the speed of the reagent being delivered to the outside, so as to control the sample addition accuracy by the reagent delivery speed.

[0144] In some examples, the greater the degree of pressing the switch button 23 , that is, the greater the degree of compression of the switch spring 25 , the greater the rotation speed of the motor 223 .

[0145] It is understandable that in the embodiment of manually rotating the rotating structure 13, the speed of the rotating structure 13 can also be manually controlled to control the speed of the reagent being transported to the outside, so as to control the sample addition accuracy by the reagent transport speed.

[0146] In some examples, the motor 223 is signal-connected to the switch button 23 and the reversing button 24 , respectively, so that the operation of the motor 223 can be controlled by the switch button 23 and the reversing button 24 .

[0147] In some examples, the power source 22 further includes a battery 224. The battery 224 and the motor 223 are electrically connected to provide power to the motor 223.

[0148] In some examples, the motor 223 and the battery 224 are both built into the base body 21 to prevent the user from touching the motor 223 and the battery 224 during hand-held operation and causing danger.

[0149] like Fig.10 and Fig.13 As shown, the first driving wheel 221, the motor 223 and the battery 224 are arranged in sequence from far to near relative to the switch button 23, and such a structural arrangement has a high degree of integration. And because the motor 223 and the battery 223 are heavy, such a structural layout allows the motor 223 and the battery 224 to be held in the palm of the hand during use, and the holding effect is better.

[0150] In this embodiment, the clamping member 212 and the second driving wheel 222 are both arranged near the front end of the device base 2, which can improve the stability of the sample injector 1 when it is connected to the base body 21 and driven to rotate by the second driving wheel 222.

[0151] In this embodiment, Fig.10 As shown, the surface of the base body 21 facing the injector 1 has a first recessed portion 211, and the first recessed portion 211 has a shape matching the outer shape of the container cover 122 of the injector 1, for example, an inwardly concave arc. When the injector 1 is connected to the base body 21, the first recessed portion 211 is used to receive part of the outer surface of the two container covers 122 of the injector 1, so that a foolproof design can be implemented, ensuring that the two container covers 122 must be in a closed state before the injector 1 can be installed on the base body 21 and used.

[0152] When the two container covers 122 are in the flipped open state, the shapes of the two container covers 122 cannot match the shape of the first recessed portion 211, resulting in the sampler 1 being unable to be installed on the device base 2. This situation will also remind the user to close the two container covers 122 before installing them on the base body 21, achieving the purpose of foolproofing and effectively avoiding the situation where the two container covers 122 are not closed and are used.

[0153] In some examples, such as Fig.11As shown, a second recessed portion 213 is further provided at the position of the base body 21 toward the rear end of the sample adder 1. The shape of the second recessed portion 213 is an inwardly concave ring, which matches the shape of the two container covers 122 at the rear end of the sample adder 1. Therefore, only when the container cover 122 is in a closed state can its rear end be received by the second recessed portion 213 of the base body 21, thereby realizing a fool-proof design.

[0154] In other embodiments, to achieve fool-proofing, the recessed portion may also be disposed at any other position of the base body 21 , so that the sample injector 1 can be installed relative to the device base 2 only when the two container covers 122 are in a closed state.

[0155] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A sample dispenser, characterized in that: include: A sample adding structure, the sample adding structure is used to deliver the reagent in the container connected to the sample adding device to the outside; A rotating structure, wherein the rotating structure is at least partially sleeved on the outer circumference of the sample loading structure and is transmission-connected to the sample loading structure; Wherein, the sample loading structure comprises a power input shaft; the rotating structure is suitable for being driven externally to rotate, thereby driving the power input shaft to rotate to deliver the reagent from the container to the outside.

2. The sample injector according to claim 1, characterized in that: The outer surface of the rotating structure has external teeth.

3. The sample injector according to claim 1, characterized in that: The rotating structure includes a first rotating wheel and a second rotating wheel which are connected to each other and arranged coaxially, the first rotating wheel is sleeved on the outer peripheral side of the sample loading structure, the second rotating wheel is transmission-connected to the power input shaft, and the diameter of the first rotating wheel is greater than the diameter of the second rotating wheel.

4. The sample injector according to claim 3, characterized in that: The outer surface of the second rotating wheel has external teeth, and the second rotating wheel is meshed with the power input shaft through the external teeth; Alternatively, the inner surface of the second rotating wheel has internal teeth, and the second rotating wheel is meshed with the power input shaft through the internal teeth.

5. The sample injector according to claim 1, characterized in that: The sample injector further comprises an outer cover shell, which is sleeved on the outer circumference of the sample injecting structure and the rotating structure, and a rotating opening penetrating the outer cover shell is provided at a position on the surface of the outer cover shell corresponding to the rotating structure; The rotating structure is suitable for being driven externally to rotate through the rotating opening.

6. A sample adding device, characterized in that: It comprises a device base and a sample injector as claimed in any one of claims 1 to 5; The equipment base comprises a base body and a power source, and the sample injector is detachably connected to the base body; When the sample injector is connected to the base body, the power source is transmission-connected to the outer peripheral side of the rotating structure and is suitable for driving the rotating structure to rotate.

7. The sample adding device according to claim 6, characterized in that: The power source includes a motor and a driving wheel; the driving wheel is at least partially exposed to the outer surface of the base body so as to be suitable for transmission connection with the rotating structure; the motor is suitable for driving the driving wheel to rotate; When the sample injector is connected to the base body, the driving wheel is suitable for rotating under the drive of the motor, thereby driving the rotating structure to rotate.

8. The sample adding device according to claim 6, characterized in that: The sample injector further comprises an outer cover shell and two container cover shells, wherein the outer cover shell is sleeved on the outer peripheral side of the sample injecting structure and the rotating structure, and the two container cover shells are respectively hinged to the rear end of the outer cover shell and are suitable for flipping relative to the outer cover shell to switch between an open state and a closed state; When the two container covers are switched to a closed state, the two container covers together enclose a receiving space to receive the container; When the two container covers are switched to an open state, the accommodating space is opened outwards; Preferably, the surface of the base body has a recessed portion, and the recessed portion has a structure that matches the outer surface of the container cover; when the sample adder is connected to the base body, the recessed portion is used to receive at least part of the outer surface of the two container covers.

9. The sample adding device according to claim 6, characterized in that: The device base also includes a clamping piece extending outward from the surface of the base body, and the clamping piece is used to clamp the outer surface of the injector so that the injector can be detachably connected to the base body.

10. The sample adding device according to claim 6, characterized in that: The device base also includes a switch button; the switch button is located at the rear end of the device base and is connected to the power source signal, and is used to control the start and stop of the power source; Preferably, the device base further comprises a reversing button; the reversing button is arranged on the side of the device base close to the switch button and is connected to the power source signal, and is used to control the rotation direction of the power source.

11. The sample adding device according to any one of claims 6 to 10, characterized in that: When the sample injector is connected to the base body, the reagent outlet of the sample injector relatively protrudes from the front end of the base body.

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