Liquid sampling device
By designing a liquid sampling device and controlling the relative position of the through hole and the outlet, the water sample is automatically dripped, which solves the problems of inconsistent sampling and low efficiency in water quality testing, and ensures the accuracy and efficiency of the test results.
Patent Information
- Application Number
- CN202423160438.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In water quality testing, manual sampling makes it difficult to guarantee the size and consistency of the water sampled each time, resulting in inaccurate test results and low efficiency.
Design a liquid sampling device, including a main body, a water delivery device and a driving component. By controlling the relative position of the through hole and the water outlet, the water sample is automatically dripped onto the indicator carrier, ensuring the consistency of the sample volume and compliance with testing requirements for each sampling.
It achieves consistency in water volume and accuracy in test results for each sample, improves testing efficiency, reduces manpower consumption, and facilitates multiple consecutive samplings.
Smart Images
Figure CN223808346U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sampling devices, in particular to a liquid sampling device. BACKGROUND
[0002] In the process of water quality detection, it is usually necessary to sample the sample to be tested and drop the sampled sample into an indicator carrier (test paper) with an indicator for analysis. The indicator in the indicator carrier will react with the water sample and produce a color change. By analyzing the color of the indicator carrier, the index condition of the water quality can be determined. In addition, in order to avoid the influence of individual abnormal values on the detection result, it is generally necessary to detect the same sample to be tested multiple times to ensure the accuracy and reliability of the detection result.
[0003] However, the amount of sample that the indicator carrier can carry is limited, and the appropriate carrying water amount is usually in the order of microliters. If the sample water amount is too large, the indicator carrier will be damaged or the detection accuracy will be reduced. If only manual operation by the detection personnel is relied on, it is difficult to ensure the size of the water amount sampled each time, and it is also difficult to ensure the consistency of the water amount sampled each time. Moreover, such repeated manual sampling operation also leads to low detection efficiency. CONTENT OF THE UTILITY MODEL
[0004] To solve at least one of the above technical problems, the present application provides a liquid sampling device which can ensure that the water amount sampled each time is consistent and meets the detection amount requirement. The technical solution adopted is as follows.
[0005] The liquid sampling device provided by the present application comprises a main body, a water delivery device, and a driving member. The main body forms an inner cavity and is also provided with a through hole communicating with the inner cavity. The water delivery device comprises a water outlet for inputting water sample into the main body. The main body is provided with an indicator carrier on the side away from the water outlet along the gravity direction. The driving member is connected to the main body and is used to drive the main body to rotate to a position where the through hole corresponds to the water outlet, so that the water sample drops from the through hole to the indicator carrier. The driving member is also used to drive the main body to rotate to a position where the through hole is out of position with the water outlet, so that the water sample drops into the inner cavity.
[0006] In some embodiments of the present application, the side wall surface of the inner cavity comprises an inclined surface which is inclinedly arranged towards the rotation axis of the main body, and the through hole is arranged on the inclined surface.
[0007] In some embodiments of the present application, the side wall surface of the inner cavity is arranged as a conical surface, and the rotation axis of the main body is coaxially arranged with the axis of the conical surface.
[0008] In some embodiments of the present application, the liquid sampling device comprises a water recovery component arranged at the bottom of the inner cavity.
[0009] In some embodiments of the present application, the water recovery component comprises a drain pipe communicating with the bottom of the inner cavity.
[0010] In some embodiments of the present application, the liquid sampling device comprises a transmission member, which comprises at least two gears capable of engaging with each other, one of which is connected to the output shaft of the driving member, and the other is arranged at the bottom of the main body and fixed coaxially with the main body.
[0011] In some embodiments of the present application, the gear connected with the main body is provided with a hollow structure corresponding to the through hole, and the indicator carrier is arranged corresponding to the hollow structure so as to expose the indicator carrier from the hollow structure. When the main body is rotated to correspond to the through hole and the water outlet, the water sample can be dripped from the through hole and fall through the hollow structure to the indicator carrier.
[0012] In some embodiments of the present application, the hollow structure is a through hole, which penetrates the upper and lower surfaces of the gear, and the indicator carrier is arranged on the side of the through hole away from the main body.
[0013] In some embodiments of the present application, the hollow structure is a notch, which penetrates the gear radially to the outer edge of the gear.
[0014] In some embodiments of the present application, the liquid sampling device further comprises a flow control valve, which is connected to the water delivery device and is used to control the water output of the water delivery device.
[0015] The embodiments of the present application have at least the following beneficial effects:
[0016] By arranging the through hole at the bottom of the main body, the water sample input from the water delivery device can be dripped through the through hole to the indicator carrier, so that the sample amount of each dripping can be limited by limiting the size of the through hole. Not only can the sample amount obtained each time meet the requirement of single detection amount, ensuring the accuracy of the detection result, but also the consistency of the sample amount obtained each time can be ensured, thereby ensuring the stability of the multiple detection results. In addition, since the falling path of the liquid is composed of the water outlet and the through hole, the relative position of the water outlet and the through hole can be controlled by driving the main body to rotate. Only when the through hole corresponds to the water outlet, the water sample can be dripped to the indicator carrier. When the through hole is misaligned with the water outlet, the water sample input by the water outlet is collected in the inner cavity. Thus, the sampling automation can be realized, not only saving manpower, but also controlling the frequency of obtaining water sample, facilitating multiple continuous sampling, and improving the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] The aspects and advantages of the embodiments described and / or illustrated in the present application will become apparent and easily understood from the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0018] Figure 1A first example structure schematic diagram of a liquid sampling device provided by an embodiment of the present application is shown in FIG. 1.
[0019] Figure 2 A top view of a main body of the liquid sampling device is shown in FIG. 2.
[0020] Figure 3 A second example structure schematic diagram of a liquid sampling device provided by an embodiment of the present application is shown in FIG. 3.
[0021] Figure 4 A third example structure schematic diagram of a liquid sampling device provided by an embodiment of the present application is shown in FIG. 4.
[0022] Reference signs: 100, liquid sampling device; 10, main body; 11, inner cavity; 12, through hole; 20, water delivery device; 21, water outlet; 30, indicator carrier; 40, driving member; 50, water recovery component; 60, transmission member; 61, empty structure. DETAILED DESCRIPTION
[0023] The embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. Figures 1 to 4 The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.
[0024] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0026] Please refer to Figure 1 and Figure 2 , the present application provides a liquid sampling device 100, comprising a main body 10, a water delivery device 20 and a driving member 40. Wherein, the main body 10 is formed with an inner cavity 11, and is also provided with a through hole 12 communicating with the inner cavity 11; the water delivery device 20 comprises a water outlet 21, which is used for inputting water sample to the main body 10, and the main body 10 is provided with an indicator carrier 30 on the side away from the water outlet 21 along the gravity direction; the driving member 40 is connected to the main body 10, and is used for driving the main body 10 to rotate to the position that the through hole 12 corresponds to the water outlet 21 (such as the A position shown in Figure 2 ), so that the water sample drops from the through hole 12 to the indicator carrier 30, and is also used for driving the main body 10 to rotate to the position that the through hole 12 is dislocated from the water outlet 21 (such as the B position shown in Figure 2 ), so that the water sample drops into the inner cavity 11. By arranging the through hole 12 at the bottom of the main body 10, the water sample input from the water delivery device 20 can drop through the through hole 12 to the indicator carrier 30, so that the sample amount of each drop can be limited by limiting the size of the through hole 12, which not only can ensure that the obtainable sample amount of each time meets the requirement of single detection amount, and ensures the accuracy of the detection result, but also can ensure the consistency of the obtainable sample amount of each time, and further ensures the stability of the multiple detection results. In addition, since the falling path of the liquid is composed of the water outlet 21 and the through hole 12, by driving the main body 10 to rotate, the relative position of the water outlet 21 and the through hole 12 can be controlled, only when the through hole 12 corresponds to the water outlet 21, the water sample can drop to the indicator carrier 30, and when the through hole 12 is dislocated from the water outlet 21, the water sample input by the water outlet 21 drops into the inner cavity 11 and is collected, which can realize automatic sampling, not only saving manpower, but also controlling the frequency of obtaining water sample, facilitating continuous sampling for multiple times, and improving the detection efficiency.
[0027] Exemplarily, the indicator carrier 30 is a test paper.
[0028] In some embodiments, the side wall surface of the inner cavity 11 comprises an inclined surface, the inclined surface is arranged to be inclined to the rotation axis of the main body 10, and the through hole 12 is arranged on the inclined surface. By arranging the inclined surface on the side wall surface of the inner cavity 11 and arranging the through hole 12 on the inclined surface, the water sample input from the water outlet 21 can directly drip through the through hole 12, avoiding the water sample collected at the bottom of the inner cavity 11 from seeping out when the through hole 12 is arranged at the bottom of the inner cavity 11. In addition, part of the water sample ejected to the side wall surface during the dripping process can slide down the inclined surface to the bottom of the inner cavity 11 and be collected, thereby avoiding the water sample adhering to the side wall surface of the inner cavity 11, and further maintaining the cleanliness of the inner cavity 11.
[0029] Optionally, the side wall surface of the inner cavity 11 can comprise a plurality of inclined surfaces, and the through hole 12 can be arranged on any one of the inclined surfaces, or a plurality of through holes 12 can be arranged on the plurality of inclined surfaces according to actual sampling requirements.
[0030] In some embodiments, the side wall surface of the inner cavity 11 is arranged as a conical surface, and the rotation axis of the main body 10 is coaxially arranged with the axis of the conical surface. By arranging the side wall surface of the inner cavity 11 as a conical surface and coaxially arranging the rotation axis of the main body 10 with the axis of the conical surface, not only can the processing difficulty of the structure of the main body 10 be reduced, and the volume of the entire liquid sampling device 100 be reduced, but also the water sample can slide down the side wall surface to the bottom of the inner cavity 11 when dripping at different positions, thereby avoiding the water sample remaining in the joint of the two inclined surfaces when falling into the joint of the two inclined surfaces.
[0031] In some embodiments, the liquid sampling device 100 comprises a water recovery component 50 arranged at the bottom of the inner cavity 11. By arranging the water recovery component 50 at the bottom of the inner cavity 11, the water sample remaining at the bottom of the inner cavity 11 can be collected, avoiding the water sample being dispersed at the bottom of the inner cavity 11 to form a damp environment and breed bacteria, maintaining the relative dryness of the inner cavity 11, and also facilitating the centralized treatment of the remaining water sample when cleaning the main body 10.
[0032] Optionally, the water recovery component 50 is provided with a water absorption component to directly absorb the water sample dripping into the inner cavity 11.
[0033] Optionally, the water recovery component 50 is arranged as a groove at the bottom of the inner cavity 11, and a partition component can be further arranged above the groove to avoid the water sample collected in the groove from evaporating and returning to the inner cavity 11.
[0034] In some embodiments, the water recovery component 50 comprises a drain pipe in communication with the bottom of the inner cavity 11. By arranging the water recovery component 50 as a drain pipe, the remaining water sample in the inner cavity 11 can be discharged in time, further ensuring the dry environment and cleanliness in the inner cavity 11.
[0035] Optionally, the drain pipe can also be connected with the water delivery device 20, so that the water sample dropped into the inner cavity 11 is recycled to the water delivery device 20, and the process of dropping the sample is repeated through the water outlet 21, thereby forming a recycling path of the water sample. The recycling path can avoid waste of the water sample and ensure that there is enough water sample for multiple detections.
[0036] In some embodiments, the liquid sampling device 100 comprises a transmission member 60, which comprises at least two gears that can be engaged with each other. One of the gears is connected to the output shaft of the driving member 40, and the other gear is arranged at the bottom of the main body 10 and fixedly connected with the main body 10 coaxially. By arranging the transmission member 60, the sampling device can be flexibly arranged, which is convenient for actual use and operation, and also facilitates the regulation of the rotation of the main body 10. The gears are common transmission members, one of the two gears is connected to the output shaft of the driving member 40, and the other gear is arranged at the bottom of the main body 10. This not only makes the structure of the liquid sampling device 100 more stable and compact, but also adjusts the speed of the rotation of the main body 10 by using the circumference relationship between the two gears under the condition of using the same driving member 40, so as to adjust the frequency of the water sample dropping into the indicator carrier 30, so as to meet different detection requirements.
[0037] Optionally, a plurality of gears can be arranged according to the layout requirements of the actual device, and the gears can also be arranged at the upper part, the middle part or the lower part of the main body 10 according to the actual shape of the main body 10, which is not limited here. In addition, under the condition of using the same driving member 40, a plurality of gears can be used to drive a plurality of main bodies 10 at the same time, so as to realize the simultaneous sampling of multiple samples and further improve the detection efficiency. For example, the driving member can be a motor, a pneumatic cylinder, etc.
[0038] In some embodiments, the gear connected with the main body 10 is provided with a void structure 61 corresponding to the through hole 12, and the indicator carrier 30 is arranged corresponding to the void structure 61, so that the indicator carrier 30 is exposed from the void structure 61. When the main body 10 is rotated to correspond to the through hole 12 and the water outlet 21, the water sample can be dropped from the through hole 12 and pass through the void structure 61 to drop into the indicator carrier 30. By arranging the void structure 61 corresponding to the through hole 12 on the gear, and arranging the indicator carrier 30 corresponding to the void structure 61, the gear can avoid hindering the dropping of the water sample. When the main body 10 is rotated to correspond to the through hole 12 and the water outlet 21, the water sample is dropped from the through hole 12, passes through the void structure 61 of the gear and is finally received by the indicator carrier 30.
[0039] It can be understood that the specific arrangement position of the indicator carrier 30 is determined according to the specific arrangement of the void structure 61 on the gear. The indicator carrier 30 can be arranged below the void structure 61 or outside the void structure 61. At the same time, please refer to Figure 3The gear can also be adjusted in size to avoid the gear obstructing the water sample from dripping out of the through hole 12 and directly into the indicator carrier 30.
[0040] In some embodiments, the avoidance structure 61 is a through hole that penetrates the upper and lower surfaces of the gear, and the indicator carrier 30 is arranged on the side of the through hole that faces away from the main body 10. Since the gear and the main body 10 are coaxially fixedly connected, the through hole corresponds to the through hole 12, i.e., the through hole is in the gravitational direction of the through hole 12, so that the through hole can remain relatively stationary with respect to the through hole 12 during rotation of the main body 10, and the water sample that drips out of the through hole 12 can also drip out of the through hole, i.e., regardless of the rotation speed and direction of the main body 10, the water sample that drips out of the through hole 12 can eventually drip into the indicator carrier 30.
[0041] Optionally, when multiple through holes 12 are arranged on the main body 10, multiple through holes can also be correspondingly arranged on the gear, and multiple indicator carriers 30 can also be correspondingly arranged.
[0042] Please refer to Figure 4 In some embodiments, the avoidance structure 61 is a notch that penetrates the outer edge of the gear in the radial direction of the gear. By arranging the avoidance structure 61 as a notch that penetrates the outer edge of the gear in the radial direction of the gear, i.e., the outer periphery of the gear is not complete, the control effect of the correspondence or misalignment of the water outlet 21 and the through hole 12 can be achieved by reciprocating the rotation of the main body 10, i.e., rotating a certain angle in one direction (e.g., the clockwise direction) and then rotating the same angle in the opposite direction to reset. By using this arrangement, the size of the notch of the gear can be used to adjust the time of a single rotation of the main body 10, i.e., to adjust the frequency of the correspondence of the through hole 12 and the water outlet 21, thereby adjusting the sampling frequency.
[0043] In some embodiments, the liquid sampling device 100 further comprises a flow control valve (not shown) that is connected to the water delivery device 20 and is used to control the water output of the water delivery device 20. By arranging the flow control valve for the water delivery device 20, the water output into the inner cavity 11 can be controlled to avoid the mismatch between the water output and the dripping speed of the water sample from the through hole 12, which can cause excessive water sample to remain in the inner cavity 11, thereby easily forming a damp environment that breeds bacteria and easily causing the water sample to overflow the through hole 12 due to excessive water sample in the inner cavity 11.
[0044] Optionally, the flow control valve can be controlled to implement that when the main body 10 is rotated to correspond to the through hole 12 and the water outlet 21, the water sample drips out of the water outlet 21, i.e., the water sample input into the inner cavity 11 from the water outlet 21 can drip out through the through hole 12, or the flow control valve can be controlled to implement that the water sample input from the water outlet 21 can drip out through the through hole 12 in an interval manner, and the relationship between the water output of the water delivery device 20 and the frequency of the dripping of the water sample from the through hole 12 is not limited here.
[0045] In the description of the application, if the description of the term "one embodiment", "some examples", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" appears, it means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0046] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art in the technical field without departing from the purpose of the application.
[0047] In the description of the application, if the patent name appears as "and", it means "and" relationship, not "or" relationship. For example, the patent name is "one A, B", which means that the content claimed by the application is: the technical solution of the subject name A and the technical solution of the subject name B.
Claims
1. A liquid sampling device, characterized by: The liquid sampling device comprises a body, a water feeding device, a driving member and a flow control valve. The body is formed with an inner cavity and a through hole communicating with the inner cavity. The water feeding device comprises a water outlet for inputting water sample into the body. The driving member is connected to the body and is used to drive the body to rotate to the position where the through hole corresponds to the water outlet, so that the water sample drops from the through hole to the indicator carrier.
2. The liquid sampling device of claim 1, wherein: The side wall surface of the inner cavity comprises an inclined surface which is inclined to the rotation axis of the body.
3. The liquid sampling device of claim 2, wherein: The through hole is arranged on the inclined surface.
4. The liquid sampling device of claim 1, wherein: The side wall surface of the inner cavity is arranged as a conical surface, and the rotation axis of the body is coaxially arranged with the axis of the conical surface.
5. The liquid sampling device of claim 4, wherein: The liquid sampling device comprises a water recovery component arranged at the bottom of the inner cavity.
6. The liquid sampling apparatus of claim 1, wherein: The water recovery component comprises a drain pipe which communicates with the bottom of the inner cavity.
7. The liquid sampling device of claim 6, wherein: The liquid sampling device comprises a transmission member which comprises at least two gears which can be engaged with each other.
8. The liquid sampling device of claim 7, wherein: One of the gears is connected to the output shaft of the driving member, and the other gear is arranged at the bottom of the body and is fixedly connected with the body coaxially.
9. The liquid sampling apparatus of claim 7, wherein: The gear connected with the body is provided with a void structure corresponding to the through hole.
10. The liquid sampling device of any one of claims 1 to 9, wherein: The indicator carrier is arranged corresponding to the void structure, so that the indicator carrier is exposed from the void structure. When the body rotates to the position where the through hole corresponds to the water outlet, the water sample can drop from the through hole and pass through the void structure to the indicator carrier. The void structure is a through hole which penetrates the upper and lower surfaces of the gear. The indicator carrier is arranged on the side of the through hole which is away from the body. The void structure is a notch which penetrates to the outer edge of the gear along the radial direction of the gear. The liquid sampling device further comprises a flow control valve which communicates with the water feeding device. The flow control valve is used to control the water output of the water feeding device.