Constant volume instrument and automatic constant volume system

Abstract

The utility model provides a constant volume instrument and an automatic constant volume system, and relates to the technical field of detection equipment. The constant volume instrument comprises a machine shell, a tray, a peristaltic pump, a liquid adding pipe and a controller, the machine shell is provided with an operation cavity and a plurality of reagent grooves, each reagent groove contains a reagent bottle, and reagents contained in the reagent bottles are different; a tray is installed in the operation cavity and used for containing a volumetric flask, the liquid inlet end of the liquid adding pipe is inserted into the reagent bottle, the liquid outlet end of the liquid adding pipe faces the tray so that reagents can be added into the volumetric flask, the peristaltic pump is installed on the liquid adding pipe, and the controller is electrically connected with the peristaltic pump. Volumetric flasks of different models can be placed in the operation cavity, a plurality of reagent grooves are formed in the machine shell, each reagent groove contains one reagent bottle, reagents contained in the reagent bottles are different, the controller controls operation of the peristaltic pump so as to control the liquid adding amount, constant volume operation of different detection items can be achieved, manual operation is not needed in the whole constant volume process, and the operation efficiency is improved. Personal errors can be reduced, and consistency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a volume setting instrument and an automatic volume setting system. Background Art

[0002] Volume determination is the process of using a volumetric flask to prepare a solution of accurate concentration. When the water is 1 to 2 cm away from the scale line, water is sucked into the volumetric flask with a rubber-tipped dropper, and the line of sight is level with the lowest point of the concave liquid surface, so that it reaches the scale line. In the traditional sample testing process, the method of volume determination is done manually, which is labor-intensive and cannot guarantee the consistency of each operation. Utility Model Content

[0003] The utility model provides a volume setting instrument and an automatic volume setting system, which are used to solve the defects of the prior art that volume setting depends on manual work and the operation consistency is poor.

[0004] In the first aspect, the utility model provides a volumetric instrument, comprising: a casing, a tray, a peristaltic pump, a liquid adding tube and a controller, the casing being provided with an operating chamber and a plurality of reagent slots, each of the reagent slots accommodating a reagent bottle, and the reagents contained in the plurality of reagent bottles being different; a tray being installed in the operating chamber, the tray being used to place a volumetric bottle, the liquid inlet end of the liquid adding tube being inserted into the reagent bottle, the liquid outlet end of the liquid adding tube being directed toward the tray so as to add reagent to the volumetric bottle, the peristaltic pump being installed on the liquid adding tube, and the controller being electrically connected to the peristaltic pump.

[0005] A volumetric flask provided by the utility model further includes a camera, which is installed on the side wall of the operating cavity and is used to take an image of the volumetric flask. The camera is electrically connected to the controller.

[0006] According to a volumetric instrument provided by the utility model, a first cover body is hinged on the casing, and the first cover body is arranged to cover the reagent tank.

[0007] According to a volumetric meter provided by the utility model, the housing is provided with a slot body with an opening facing upward, a plurality of reagent slots are arranged at the slot bottom of the slot body, and the first cover body is hinged to the slot wall of the slot body.

[0008] According to the volumetric meter provided by the utility model, the liquid adding tube is detachably installed in the casing.

[0009] According to a volumetric meter provided by the utility model, the casing is provided with a plurality of mounting grooves, the plurality of liquid adding tubes are clamped in the plurality of mounting grooves in a one-to-one correspondence, the casing is hinged to a second cover body, and the second cover body is covered in the mounting grooves.

[0010] According to a constant volume instrument provided by the utility model, the liquid outlet end of the liquid adding tube is in the shape of a dropper and is suspended above the tray.

[0011] In the second aspect, the utility model also provides an automatic volume determination system, which includes a robotic arm, a capping and decapping machine and a volume determination instrument as described in the first aspect, wherein the robotic arm has a mechanical claw for clamping a volumetric bottle, and the robotic arm is used to realize the movement of the volumetric bottle between the tray and the capping and decapping machine.

[0012] According to an automatic volume-fixing system provided by the utility model, a vibrator is installed in the tray.

[0013] According to an automatic volume determination system provided by the utility model, it also includes a mixing device, the mixing device has a receiving groove, and the mechanical arm can place the volumetric flask in the receiving groove.

[0014] The utility model provides a volumetric meter and an automatic volumetric system, wherein the operating chamber can hold volumetric bottles of different types, a plurality of reagent slots are arranged in the casing, each reagent slot holds a reagent bottle, and the reagents contained in the plurality of reagent bottles are different, and a controller controls the operation of the peristaltic pump and thus controls the amount of liquid added, thereby enabling volumetric operations for different detection items to be realized with the aid of a volumetric meter, and the entire process does not require manual operation, can reduce human errors, and has high consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 The utility model is a top view of the volume fixer provided by the utility model when the first cover is in an open state.

[0017] Figure 2 It is a front view of the volume fixer provided by the utility model.

[0018] Figure 3 It is a side view of the volume fixer provided by the utility model.

[0019] Figure 4 It is a top view of the volume fixer provided by the utility model.

[0020] Reference numerals:

[0021] 10. Casing; 11. Operating chamber; 12. Reagent tank; 13. Tank body; 20. Tray; 30. Camera; 40. First cover body; 50. Second cover body. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Combine the following Figure 1-Figure 4 The utility model is described.

[0027] The utility model provides a volume setting instrument, such as Figures 1 to 4 As shown, it includes a housing 10, a tray 20, a peristaltic pump, a liquid adding tube and a controller. Figure 1 and Figure 2As shown, the housing 10 is provided with an operating chamber 11 and a plurality of reagent tanks 12, each reagent tank 12 containing a reagent bottle, and each reagent bottle contains a different reagent. Figure 1 As shown, a tray 20 is installed in the operating chamber 11, and the tray 20 is used to place a volumetric bottle. The liquid inlet end of the liquid adding tube is inserted into the reagent bottle, and the liquid outlet end of the liquid adding tube faces the tray 20 so as to add reagent to the volumetric bottle. The peristaltic pump is installed on the liquid adding tube, and the controller is electrically connected to the peristaltic pump.

[0028] like Figure 2 As shown, the operating chamber 11 is an open chamber, and the open end of the operating chamber 11 is located at the side of the housing 10, and a volumetric flask can enter the operating chamber 11 from the side of the housing 10. A plurality of reagent tanks 12 are provided, and the size of the reagent tanks 12 can be the same or different. Each reagent tank 12 can be clamped with a reagent bottle, and each reagent bottle contains different reagents. The liquid adding pipe is a hose, which is inserted into the reagent bottle and inserted to the bottom of the reagent bottle. The bottle mouth of the reagent bottle is sealed to prevent the reagent from volatilizing or being polluted by dust in the air. The liquid adding pipe passes through the bottle mouth sealing cover and is inserted into the reagent bottle. The other end of the liquid adding pipe is dropper-shaped, has a certain hardness, is conveniently fixed on the housing 10, and is suspended above the tray 20. Of course, both ends of the liquid adding pipe can be dropper-shaped, as long as the reagent in the reagent bottle can be transported and added to the volumetric flask placed on the tray 20.

[0029] In one embodiment, the notch of the reagent tank 12 faces upward, and the reagent bottle is directly inserted into the reagent tank 12. As a result, the bottle mouth of the reagent bottle faces upward, and in this case, the liquid adding tube is inserted into the bottom of the reagent bottle. In another embodiment, a test tube rack is fixedly provided on the rack, and each jack on the test tube rack serves as the reagent tank 12 for placing the reagent bottle, and the bottle mouth of the reagent bottle is inserted downward on the jack of the test tube rack. The liquid adding tube is inserted into the reagent bottle and communicated with the inside of the reagent bottle.

[0030] It can be understood that each reagent bottle is provided with a liquid adding tube, and each liquid adding tube is provided with a peristaltic pump to prevent the reagents between the reagent bottles from crossing and to prevent the liquid adding tube from being contaminated by other reagents.

[0031] When the volumetric flask is placed on the tray 20, the operation key on the housing 10 is pressed, and the controller determines the required reagent type according to the user's operation, and controls the corresponding peristaltic pump to start, and the reagent in the reagent bottle corresponding to the reagent type is added to the volumetric flask through the liquid adding tube. During the liquid adding process, the controller can effectively control the amount of reagent added to the volumetric flask by controlling the power of the peristaltic pump.

[0032] The volumetric meter provided by the embodiment of the utility model has an operating chamber 11 capable of placing volumetric flasks of different types, and a plurality of reagent slots 12 are arranged in the casing 10, each reagent slot 12 accommodating a reagent bottle, and the reagents contained in the plurality of reagent bottles are different. The controller controls the operation of the peristaltic pump and thus controls the amount of liquid added, thereby enabling the volumetric operation of different detection items to be realized with the aid of a volumetric meter, and the entire process does not require manual operation, can reduce human errors, and has high consistency.

[0033] like Figure 2 As shown, the volumetric instrument further includes a camera 30, which is mounted on the side wall of the operating chamber 11 and is used to capture an image of the volumetric bottle. The camera 30 is electrically connected to the controller.

[0034] There are scale lines on the volumetric flask. After the volumetric flask is placed on the tray 20 and the reagent is added, the camera 30 captures an image of the volumetric flask. The controller determines whether the liquid level in the volumetric flask is flush with the scale lines based on the image captured by the camera 30.

[0035] For example, first add the sample and medicine into the volumetric flask and mix them evenly, then dilute to 3 / 4 of the volumetric flask, at which point there is a gap between the liquid level and the scale line. To accurately determine the volume, place the volumetric flask on the tray 20 of the volumetric instrument, and control the peristaltic pump to keep the liquid level at the scale line. Among them, in order to ensure the capacity of the liquid in the constant volume flask, after the peristaltic pump stops, let the volumetric flask on the tray 20 stand for 1 minute. After the liquid level stabilizes, use the camera 30 to re-check whether the liquid level is flush with the scale line to improve the accuracy of the constant volume and avoid deviations in the constant volume due to liquid level fluctuations.

[0036] like Figure 4 As shown, a first cover body 40 is hingedly connected to the housing 10 , and the first cover body 40 covers the reagent tank 12 .

[0037] The housing 10 is provided with a slot body 13 with an opening facing upward, and a plurality of reagent slots 12 are arranged at the bottom of the slot body 13. A first cover body 40 is hinged to the slot wall of the slot body 13. Usually, the first cover body 40 is in a closed state to prevent external dust from being deposited on the reagent bottle. When the reagent in the reagent bottle is used up and needs to be replaced or the reagent type needs to be adjusted due to the requirements of the test project, the first cover body 40 is opened to facilitate the operator to take the reagent bottle out of the reagent slot 12.

[0038] After multiple uses, the reagent is easily deposited in the liquid adding tube. For the convenience of replacing or cleaning the liquid adding tube, the liquid adding tube is detachably mounted in the housing 10. Alternatively, the reagent bottle is replaced with a cleaning bottle filled with clean water, and the liquid adding tube is rinsed by repeatedly delivering clean water.

[0039] In a specific embodiment, the housing 10 is provided with a plurality of mounting grooves, and the plurality of liquid adding tubes are clamped in the plurality of mounting grooves one by one. The housing 10 is hinged to the second cover 50, and the second cover 50 is covered on the mounting grooves. By providing the mounting grooves, the arrangement of the liquid adding tubes is regularized. When the liquid adding tubes need to be removed, the second cover 50 is opened and the liquid adding tubes are pulled out of the mounting grooves. Specifically, the second cover 50 is connected to the groove wall of the mounting groove by a hinge.

[0040] To accommodate volumetric bottles of different heights and sizes, the tray 20 can be installed on the housing 10 in a lifting manner. For example, a lifting motor is installed in the housing 10, and the motor shaft of the lifting motor is in driving connection with the tray 20. Driven by the lifting motor, the tray 20 can be lifted up and down, so that the field of view of the camera 30 is directed toward the volumetric bottle, so as to avoid the volumetric bottle being too small or too large to affect the judgment accuracy.

[0041] An automatic volume determination system provided by an embodiment of the utility model comprises a robotic arm, a capping and decapping machine and the above-mentioned volume determination instrument, wherein the robotic arm has a mechanical claw for clamping a volumetric bottle, and the robotic arm is used to move the volumetric bottle between a tray 20 and the capping and decapping machine.

[0042] The mechanical arm is a two-dimensional mechanical motion platform or a three-dimensional mechanical motion arm. The capping and decapping machine is an existing device, and the utility model does not introduce it in detail. The capping and decapping machine can realize the capping and decapping of the volumetric bottle.

[0043] When in use, the robot arm places the volumetric flask on the tray 20, and the peristaltic pump is turned on to add the reagent in the reagent bottle to the volumetric flask. When the controller determines that the liquid level in the volumetric flask is flush with the scale line based on the image taken by the camera 30, the peristaltic pump is turned off. The volumetric flask is left to stand for 1 minute, and the image taken by the camera 30 is used to confirm whether the liquid level is flush with the scale line. After confirmation, the robot arm transfers the volumetric flask to the operating position of the capping and decapping machine, and the capping and decapping machine caps the volumetric flask, mixes it after the operation is completed, and caps and mixes it 2-3 times after opening the cap to release air, and then leaves it to stand for use.

[0044] In an optional embodiment, a vibrator is installed in the tray 20. After the volume is set, the volumetric flask is transferred by the robot arm to the capping and decapping machine for capping, and then moved back to the volumetric instrument by the robot arm, and vibrated and mixed by the vibrator in the tray 20. After mixing, the robot arm transfers the volumetric flask to the capping and decapping machine to open the cover and release the air, and then covers and mixes again 2-3 times, and leaves it to stand for use. In another optional embodiment, the automatic volume setting system also includes a mixing device, and the shaking device has a holding tank. The robot arm can place the volumetric flask in the holding tank and mix it by shaking the mixing device. Of course, the automatic volume setting system can also adopt other forms of mixing structures.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A volumetric apparatus, characterized in that: include: A casing, a tray, a peristaltic pump, a liquid adding tube and a controller, wherein the casing is provided with an operating chamber and a plurality of reagent slots, each of the reagent slots accommodating a reagent bottle, and the reagents contained in the plurality of reagent bottles are different; a tray is installed in the operating chamber, and the tray is used to place a volumetric bottle, the liquid inlet end of the liquid adding tube is inserted into the reagent bottle, and the liquid outlet end of the liquid adding tube faces the tray so as to add reagent to the volumetric bottle, the peristaltic pump is installed on the liquid adding tube, and the controller is electrically connected to the peristaltic pump.

2. The volumetric apparatus according to claim 1, characterized in that: It also includes a camera, which is installed on the side wall of the operating cavity and is used to take an image of the volumetric bottle. The camera is electrically connected to the controller.

3. The volume stabilizer according to claim 1, characterized in that: The housing is hinged with a first cover body, and the first cover body is arranged to cover the reagent tank.

4. The volume stabilizer according to claim 3, characterized in that: The housing is provided with a slot body with an opening upward, a plurality of reagent slots are arranged at the slot bottom of the slot body, and the first cover body is hinged to the slot wall of the slot body.

5. The volumetric apparatus according to claim 1, characterized in that: The liquid adding pipe is detachably installed in the casing.

6. The volume stabilizer according to claim 5, characterized in that: The housing is provided with a plurality of mounting grooves, and the plurality of liquid adding pipes are clamped in the plurality of mounting grooves in a one-to-one correspondence. The housing is hinged to a second cover body, and the second cover body is covered in the mounting grooves.

7. The volumetric apparatus according to claim 1, characterized in that: The liquid outlet end of the liquid adding pipe is in the shape of a dropper and is suspended above the tray.

8. An automatic volume setting system, characterized in that: It comprises a robotic arm, a capping and decapping machine and a volumetric instrument as claimed in any one of claims 1 to 7, wherein the robotic arm has a mechanical claw for clamping a volumetric flask, and the robotic arm is used to realize the movement of the volumetric flask between the tray and the capping and decapping machine.

9. The automatic volume setting system according to claim 8, characterized in that: A vibrator is installed in the tray.

10. The automatic volume setting system according to claim 8, characterized in that: It also includes a mixing device, which has a receiving tank, and the robotic arm can place the volumetric flask in the receiving tank.

Images