Shielding device for sampling, sampling device, sample container and centrifugal device
By designing a shield with a shading piece and adjustable sampling port depth, the problem of the sampling head being difficult to avoid contact with the upper product is solved, and pure sampling of the middle and lower products is achieved, ensuring the purity and sampling efficiency of the sample.
Patent Information
- Application Number
- CN202420590415.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-26
AI Technical Summary
During the sampling process, it is difficult for the sampling head to avoid contact with the upper product, resulting in the inability to collect pure middle and lower products. For example, the fat layer formed after centrifugation of the milk sample is mixed with the middle and lower liquid middle and lower liquid, affecting the purity of the sample.
A shield is designed, including a shielding body, a shading member and a cover body, forming a sampling channel and an operating port in the shielding body. The shading member can be opened or closed at a predetermined sampling depth to ensure that the sampling head does not contact the upper product. In case of direct sampling. The shading member can be a semi-permeable membrane or a breakable material, such as a thin film or tin foil, and the shielding body and the outer content form a sample storage space, and the sampling port depth is adjustable.
It realizes direct sampling without contacting the upper layer product, ensuring that the sampling parts can collect pure middle and lower layer products, and improves the purity and sampling efficiency of the sample.
Smart Images
Figure CN222258827U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sampling, in particular to a shielding device, a sampling device, a sample container and a centrifugal device used for sampling. Background Art
[0002] At present, when sampling the middle and lower layers of a multi-layered sample, the operator often needs to pierce the upper layer with the sampling head of the sampling component and extend it into the middle and lower layers. In this way, the sampling head can collect and absorb the middle and lower layer products. However, this method will inevitably cause the sampling head to contain the upper layer products, which will cause the sampling component to be unable to sample pure middle and lower layer products. For example, after centrifugation of a milk sample, a fat layer and a middle and lower layer of liquid located below the fat layer will be formed. When it is necessary to sample the middle and lower layer of liquid, the tip of the liquid suction gun is directly pierced through the fat layer and the tip of the gun is brought into the middle and lower layer of liquid. In this way, the tip of the gun can absorb and collect the middle and lower layer of liquid of the centrifuged milk sample. However, this method causes the liquid absorbed by the tip of the liquid suction gun to contain the upper layer of fat, and the liquid suction gun cannot absorb pure middle and lower layer liquid. Utility Model Content
[0003] One advantage of the utility model is that it provides a shield, a sampling device, a sample container and a centrifugal device for sampling, so that the sampling head can directly sample the middle and lower layer products without contacting the upper layer products, which is conducive to the sampling component sampling pure middle and lower layer products.
[0004] In order to achieve at least one of the above advantages of the utility model, a shielding device for sampling includes: a shielding body, a sampling channel is formed in the shielding body, the shielding body is formed with a sampling port and an operating port connected to the sampling channel, the sampling port is located below the operating port and can have a predetermined sampling depth; and a shielding member, the shielding member is arranged at the sampling port; and when the sampling port is not at the predetermined sampling depth, the shielding member isolates the sampling channel from the external sampling environment, and when the sampling port is at the predetermined sampling depth, the shielding member no longer isolates the sampling channel, and the sampling channel is connected to the external sampling environment.
[0005] According to an embodiment of the utility model, the cover is a semi-permeable membrane, and the semi-permeable membrane is only suitable for a predetermined sampling layer located at a predetermined sampling depth in the external sampling environment to pass through.
[0006] According to an embodiment of the utility model, the covering member is made of a breakable material, and when the sampling port is not at a predetermined sampling depth, the breakable material is in an unbroken state, and when the sampling port is at a predetermined sampling depth, the breakable material is in a broken state.
[0007] According to an embodiment of the present invention, the breakable material is a film or tin foil.
[0008] According to an embodiment of the utility model, a cover body is further included, wherein the cover body is connected to the operation port and is used to cover the operation port.
[0009] According to one embodiment of the utility model, the cover body includes: a covering portion, used to cover the operating port; an inserting ring, which surrounds the outer periphery of the covering portion and extends in a direction perpendicular to the covering portion, and is used to be inserted into the operating port; and a pulling portion, which extends from the outer periphery of the covering portion in a direction away from the inserting ring.
[0010] The utility model also provides a sample container, comprising: a shield for sampling as described above; and an outer body, wherein the outer body is formed with a accommodating cavity; the shielding body is arranged in the accommodating cavity to form a sample storage space between the outer wall of the shielding body and the inner wall of the outer body.
[0011] According to an embodiment of the utility model, the sampling port of the shielding body is arranged in the accommodating cavity with an adjustable depth.
[0012] The utility model also provides a centrifugal device, comprising: a sample container as described above; and a centrifuge, wherein the centrifuge is used for centrifuging the sample container.
[0013] The utility model also provides a sampling device, comprising: a shielding device for sampling as described above; and a sampling component, wherein the sampling component has a sampling head, and the sampling head is suitable for passing through the operation port and extending into the sampling channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic structural diagram of a shielding device for sampling according to an embodiment of the utility model.
[0015] Figure 2 It is a cross-sectional schematic diagram of a shielding device for sampling according to an embodiment of the utility model.
[0016] Figure 3 It is a schematic structural diagram of a sample container according to an embodiment of the utility model.
[0017] Figure 4 It is an exploded schematic diagram of a sample container according to an embodiment of the utility model.
[0018] Figure 5 It is a cross-sectional view of a sample container according to an embodiment of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 10. Shielding body; 101. Sampling channel; 102. Operation port; 103. Sampling port; 11. Large pipe section; 111. First thread; 12. Small pipe section; 13. Conical pipe section;
[0021] 20. Mouth covering;
[0022] 30. Cover body; 31. Covering part; 32. Inserting ring; 33. Pulling part;
[0023] 40. Bendable connecting strip;
[0024] 50, outer container; 501, accommodating chamber; 502, external opening; 503, sample storage space; 51, straight tube portion; 511, second thread; 52, ball portion;
[0025] 800, sample; 81, predetermined sampling layer; 82, remaining sampling layers;
[0026] 900. Sampling component; 91. Sampling head. DETAILED DESCRIPTION
[0027] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0028] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.
[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] See also Figure 1 to Figure 2 The shield for sampling includes a shielding body 10 and a cover 20. A sampling channel 101 is formed in the shielding body 10, and the shielding body 10 is formed with a sampling port 103 and an operation port 102 connected to the sampling channel 101. The sampling port 103 is located below the operation port 102 and may have a predetermined sampling depth. The external sampling environment of the predetermined sampling depth has a predetermined sampling layer 81, such as a middle and lower layer product of milk or chemical products that is divided into multiple layers after centrifugation.
[0032] Optionally, the shielding body 10 is a straight tube body extending in a straight line. The operation port 102 and the sampling port 103 are respectively arranged at the top and bottom of the straight tube body. Specifically, the shielding body 10 includes a large tube section 11, a small tube section 12 and a conical tube section 13. The operation port 102 is formed at the top of the large tube section 11. The small tube section 12 is arranged below the large tube section 11, the tube diameter of the small tube section 12 is smaller than that of the large tube section 11, and the sampling port 103 is arranged on the bottom wall of the small tube section 12. The conical tube section 13 is connected between the large tube section 11 and the small tube section 12.
[0033] Optionally, the shielding body 10 may also be a curved and extended bent tube body or a combined tube body formed by combining a straight tube body and a curved tube body, and the operation port 102 and the sampling port 103 are respectively formed at two different height positions of the combined tube body or the curved tube body.
[0034] In this way, when sampling the predetermined sampling layer 81 located in the middle and lower layers, the shielding body 10 can be directly inserted downward into the sample 800 until the sampling port 103 reaches the predetermined sampling layer 81 at the predetermined sampling depth.
[0035] The mouth shield 20 is arranged at the sampling port 103, and when the sampling port 103 is not at a predetermined sampling depth, the mouth shield 20 isolates the sampling channel 101 from the external sampling environment. When the sampling port 103 is at a predetermined sampling depth, the mouth shield 20 no longer isolates, and the sampling channel 101 is connected to the external sampling environment.
[0036] In some examples, the cover 20 is a semi-permeable membrane, and the semi-permeable membrane is only suitable for the predetermined sampling layer 81 located at the predetermined sampling depth in the external sampling environment to pass through. In this way, before the sampling port 103 of the shielding body 10 is inserted into the predetermined sampling layer 81, since the semi-permeable membrane will not pass through the remaining sampling layers 82, the semi-permeable membrane separates the sampling channel 101 from the remaining sampling layers 82, and the remaining sampling layers 82 cannot enter the sampling channel 101, and the sampling channel 101 is in a cut-off state from the external sampling environment. When the sampling port 103 of the shielding body 10 reaches the predetermined sampling layer 81, the predetermined sampling layer 81 can enter the sampling channel 101 by virtue of the semi-permeable membrane being able to pass through the predetermined sampling layer 81, so that the external sampling environment and the sampling channel 101 are in a conductive state.
[0037] In other examples, the cover 20 is made of a breakable material, and when the sampling port 103 is not at the predetermined sampling depth, the breakable material is in an unbroken state, thereby isolating the sampling channel 101 from the external sampling environment, so that the remaining sampling layers 82 in the external sampling environment cannot enter the sampling channel 101. When the sampling port 103 is at the predetermined sampling depth, the breakable material is in a broken state, so that the sampling channel 101 is connected to the external sampling environment. In this way, the predetermined sampling layer 81 at the predetermined sampling depth can come into the sampling channel 101.
[0038] In this way, when the sampling head 91 of the sampling component 900 enters the sampling channel 101 through the operation port 102, since the predetermined sampling layer 81 has entered the sampling channel 101, the sampling head 91 of the sampling component 900 can directly sample the predetermined sampling layer 81 at the predetermined sampling depth without contacting the remaining sampling layers 82, thereby obtaining a pure middle and lower layer product. Of course, the operator can also directly use the sampling head 91 to pierce the breakable material after inserting the sampling head 91 of the sampling component 900 into the sampling channel 101, and sample the predetermined sampling layer 81 at the predetermined sampling depth.
[0039] In order to ensure that the breakable material will not be damaged before breaking, the breakable material is preferably a film or tin foil. When the sampling port 103 is not at the predetermined sampling depth, the film or tin foil can effectively isolate the sampling channel 101 from the outside, and the film or tin foil is soft and can be broken smoothly.
[0040] Preferably, see Figure 2The shield for sampling further includes a cover 30. The cover 30 is connected to the operation port 102 and is used to cover the operation port 102. In this way, when sampling is not performed, the cover 30 can close the operation port 102, thereby preventing dust and other impurities from falling into the sampling channel 101 and preventing the sampling channel 101 from being contaminated.
[0041] In some examples, the cover body 30 includes a covering portion 31, an inserting ring 32, and a pulling portion 33. The covering portion 31 is used to cover the operation port 102. The inserting ring 32 surrounds the outer periphery of the covering portion 31 and extends in a direction perpendicular to the covering portion 31, and is used to be inserted into the operation port 102. The pulling portion 33 extends from the outer periphery of the covering portion 31 in a direction away from the inserting ring 32.
[0042] Thus, when the operation opening 102 needs to be closed, the covering portion 31 covers the operation opening 102, and the inserting ring 32 is inserted into the operation opening 102, so that the operation opening 102 is firmly closed. When the operation opening 102 needs to be opened, the pulling portion 33 is pulled upward, and the inserting ring 32 is separated from the operation opening 102, so that the operation opening 102 can be easily opened in a relatively labor-saving manner.
[0043] Preferably, the shield for sampling further comprises a bendable connecting strip 40. The bendable connecting strip 40 is connected between the shielding body 10 and the cover body 30. In this way, when the cover body 30 is covered on the operation port 102 or separated from the operation port 102, the bendable connecting strip 40 can be flexibly bent, so that the closing or opening operation of the cover body 30 is not easily restricted, thereby making the closing or opening operation of the cover body 30 convenient.
[0044] Furthermore, the bendable connecting strip 40 is a rubber soft strip or a plastic soft strip. Therefore, the bendable connecting strip 40 has good bending performance, mature processing technology and low cost.
[0045] See also Figures 3 to 5 The utility model also provides a sample container, which includes the shielding device for sampling as described above and an outer container 50.
[0046] The outer body 50 is formed with a receiving cavity 501, and the outer body 50 is formed with an outer opening 502 communicating with the receiving cavity 501. The shielding body 10 is disposed in the receiving cavity 501 through the outer opening 502 to form a sample storage space 503 between the outer wall of the shielding body 10 and the inner wall of the outer body 50.
[0047] Optionally, the outer container 50 can be a test tube with an open top and a closed bottom. After the sample 800 is placed in the test tube, the shield for sampling is installed into the accommodating cavity 501 through the outer opening 502, and at the same time, it is ensured that the sampling port 103 of the shield for sampling is located at a predetermined sampling depth. Thus, the sample 800 is stored in the sample storage space 503. And when the sampling component 900 samples the predetermined sampling layer 81 located in the middle and lower layers of the sample, the sampling head 91 of the sampling component 900 extends through the operating port 102 into the sampling channel 101 to obtain pure middle and lower layer products.
[0048] Specifically, the outer volume 50 includes a straight tube portion 51 and a ball socket portion 52. The outer opening 502 is formed at the top of the straight tube portion 51. The ball socket portion 52 is disposed below the straight tube portion 51 and communicates with the straight tube portion 51.
[0049] Preferably, see Figure 2 and Figure 5 The sampling port 103 of the shielding body 10 is arranged in the accommodating cavity 501 with an adjustable depth. The depth of the predetermined sampling layer 81 of different products may be different, and the depth of different predetermined sampling layers 81 may also be different. When sampling predetermined sampling layers 81 of different depths, the operator adjusts the installation depth of the sampling port 103 so that the sampling component 900 can subsequently sample predetermined sampling layers 81 of different depths.
[0050] For specific examples, see Figure 4 and Figure 5 , the shielding body 10 is threadedly connected in the accommodating cavity 501, so that the depth of the shielding body 10 is adjustable. That is, the operator can adjust the depth of the shielding body 10 by tightening or loosening the thread of the shielding body 10. For example, when the thread is tightened, the depth of the shielding body 10 will be reduced, and when the thread is loosened, the depth of the shielding body 10 will be increased.
[0051] Specifically, the outer wall of the shielding body 10 is provided with a first thread 111. The inner wall of the outer body 50 is provided with a second thread 511. The shielding body 10 and the outer body 50 are threadedly connected by the cooperation of the first thread 111 and the second thread 511.
[0052] In addition, in order to facilitate observation of the depth adjustment of the shielding body 10 , the outer volume 50 and the shielding body 10 may both be made of transparent materials, such as transparent plastic material.
[0053] The utility model also provides a sampling device, see Figure 2The sampling device comprises the above-mentioned shield for sampling and a sampling component 900. The sampling component 900 has a sampling head 91, which is suitable for passing through the operation port 102 and extending into the sampling channel 101, so as to directly sample the predetermined sampling layer 81 of the sample 800.
[0054] Specifically, the sampling component 900 may be a syringe or a pipette, wherein the needle of the syringe or the tip of the pipette is suitable for penetrating into the sampling channel 101 to absorb the sample.
[0055] The utility model also provides a centrifugal device, comprising the sample container as described above and a centrifuge. The centrifuge is used for centrifuging the sample container.
[0056] That is to say, the sample container of the present invention can be used in the field of centrifugation to store the sample 800 before centrifugation and stratification, and to take out the sample 800 after centrifugation and stratification, so that the sampling component 900 can sample and obtain pure middle and lower layer products after centrifugation.
[0057] See also Figures 2 to 5 , below, taking the sampling of the lower and middle layers of the milk after centrifugation as an example, the milk sampling process is described in detail, which specifically includes the following steps:
[0058] S10: adding milk into the outer container 50 .
[0059] S20 : Screwing the shielding body 10 into the outer housing 50 by threading.
[0060] S30: According to the estimated depth of the middle and lower layers of liquid after centrifugation of the milk, the installation depth of the shielding body 10 is adjusted so that the sampling port 103 of the shielding body 10 can be located in the middle and lower layers of liquid after centrifugation.
[0061] S40: placing the sample container in the centrifuge, and starting the centrifuge to centrifuge the milk.
[0062] S50: After the centrifuged sample container is taken out, the sampling head 91 of the sampling component 900 passes through the shielding body 10 to pierce the breakable material, so that the sampling head 91 directly absorbs the middle and lower layer liquid, or absorbs the middle and lower layer liquid through the semi-permeable membrane.
[0063] In this way, the sampling component 900 can directly absorb the pure middle and lower layer products without contacting the upper layer products after centrifugation.
[0064] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. A shield for sampling, characterized in that: include: a shielding body, wherein a sampling channel is formed in the shielding body, and the shielding body is formed with a sampling port and an operation port connected with the sampling channel, wherein the sampling port is located below the operation port and may have a predetermined sampling depth; and A covering member is arranged at the sampling port; when the sampling port is not at a predetermined sampling depth, the covering member separates the sampling channel from an external sampling environment; when the sampling port is at a predetermined sampling depth, the covering member no longer separates the sampling channel, and the sampling channel is connected to the external sampling environment.
2. The shielding device for sampling according to claim 1, characterized in that: The cover is a semi-permeable membrane, and the semi-permeable membrane is only suitable for a predetermined sampling layer located at a predetermined sampling depth in the external sampling environment to pass through.
3. The shielding device for sampling according to claim 1, characterized in that: The covering member is made of a breakable material, and when the sampling port is not at a predetermined sampling depth, the breakable material is in an unbroken state, and when the sampling port is at a predetermined sampling depth, the breakable material is in a broken state.
4. The shielding device for sampling according to claim 3, characterized in that: The breakable material is a film or tin foil.
5. The shielding device for sampling according to claim 1, characterized in that: It also includes a cover body, which is connected to the operation port and is used to cover the operation port.
6. The shielding device for sampling according to claim 5, characterized in that: The cover body comprises: a covering portion, used for covering the operation port; an inserting ring, which surrounds the outer periphery of the covering portion and extends in a direction perpendicular to the covering portion, and is used for being inserted into the operating port; and A pulling portion extends from the outer periphery of the covering portion in a direction away from the inserting ring.
7. A sample container, characterized in that include: A shield for sampling as claimed in any one of claims 1 to 6; as well as An outer container is formed with a containing cavity; the shielding body is arranged in the containing cavity to form a sample storage space between the outer wall of the shielding body and the inner wall of the outer container.
8. The sample container according to claim 7, characterized in that: The sampling port of the shielding body is arranged in the accommodating cavity with an adjustable depth.
9. A centrifugal device, characterized in that include: A sample container as claimed in claim 7 or 8; as well as A centrifuge is provided, wherein the centrifuge is used to centrifuge the sample container.
10. A sampling device, characterized in that include: A shield for sampling as claimed in any one of claims 1 to 6; and A sampling component is provided with a sampling head, and the sampling head is suitable for passing through the operation port and extending into the sampling channel.