Sampling device for detecting brominated flame retardant in food
By designing a sampling device for detecting brominated flame retardants in food, a sliding control rod and clamping arm structure are used to clamp and cut samples, solving the problems of high consumable consumption and sample contamination, and realizing a low-consumption and pollution-free sampling process.
Patent Information
- Application Number
- CN202511650908.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-02-10
AI Technical Summary
In the detection of brominated flame retardants in food, existing technologies require frequent replacement of sampling tools, resulting in high consumption of consumables and easy contamination of samples.
Design a sampling device that includes an operating end and a sample bag. Utilize a sliding control lever and clamping arm structure to achieve sample clamping and cutting functions, avoid sample adhesion, and protect the sample from contamination through the sample bag.
It effectively reduces the consumption of consumables during batch sampling, ensures the independence of samples, avoids sample contamination, and meets the needs of preliminary observation and judgment.
Smart Images
Figure CN121499136A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of food testing technology, and more specifically, to a sampling device for detecting brominated flame retardants in food. Background Technology
[0002] Food may contain brominated flame retardants, primarily originating from migration during plastic packaging materials and processing. Brominated flame retardants (such as tetrabromobisphenol A and hexabromocyclododecane) are widely used in plastic products (such as packaging materials and containers), electronic components, and textiles. These substances may migrate into food at high temperatures or upon contact with food, leading to food contamination.
[0003] Therefore, the testing of brominated flame retardants is also an important part of food safety testing.
[0004] Currently, food sampling typically involves a large number of samples. To prevent contamination or cross-contamination, clean sampling tools are required for each sampling session. In practice, frequent changes of gloves and gripping tools result in significant waste of sampling materials. Summary of the Invention
[0005] The purpose of this application is to provide a sampling device for detecting brominated flame retardants in food, which can effectively reduce the consumption of consumables during batch sampling, while ensuring the independence of samples and avoiding sample contamination.
[0006] The embodiments of this application are implemented as follows: A sampling device for detecting brominated flame retardants in food includes: an operating end and a sample bag.
[0007] The operating end includes: cylinder, control rod, first clamping arm and second clamping arm.
[0008] The control rod is located inside the cylinder, and is slidably fitted into the cylinder along its axial direction. The control rod is driven by a drive component.
[0009] The first clamping arm and the second clamping arm are both mounted on one end of the control lever. One end of the first clamping arm is hinged to one end of the second clamping arm. A first groove is formed on the side of the first clamping arm near the second clamping arm, and a second groove is formed on the side of the second clamping arm near the first clamping arm.
[0010] The first clamping arm and the second clamping arm constitute the first clamp.
[0011] The hinged ends of the first clamping arm and the second clamping arm are fitted with a first elastic element, so that in the natural state, the first elastic element drives the free ends of the first clamping arm and the second clamping arm to separate from each other.
[0012] The control lever has a first stop point and a second end point.
[0013] When the control lever is at the first movement stop point, the control lever extends completely through the cylinder, the first clamp is outside the cylinder, and the first clamping arm and the second clamping arm are separated from each other.
[0014] When the control lever is at the second movement stop point, the end of the control lever is inside the cylinder, the first clamp is inside the cylinder, and the first clamping arm and the second clamping arm are close to each other.
[0015] The sample bag consists of: the bag body, the third clamping arm, and the fourth clamping arm.
[0016] One end of the third clamping arm is connected to one end of the fourth clamping arm. A third groove is formed on the side of the third clamping arm near the fourth clamping arm, and a fourth groove is formed on the side of the fourth clamping arm near the third clamping arm. A second elastic element is fitted at the connection end of the third and fourth clamping arms. In the natural state, the second elastic element drives the free ends of the third and fourth clamping arms to separate from each other.
[0017] The third and fourth clamping arms constitute the fourth clamp. The fourth clamp is located inside the bag body, and the hinged ends of the third and fourth clamping arms are connected to the bottom of the bag body.
[0018] The surface of the third clamping arm away from the fourth clamping arm is adapted to the groove wall of the first groove, and the surface of the fourth clamping arm away from the third clamping arm is adapted to the groove wall of the second groove.
[0019] Both the third and fourth grooves have flanges on their edges, and the top of the flanges has a blade.
[0020] The second clamp is used to assemble into the first clamp so that the third clamping arm engages with the first groove and the fourth clamping arm engages with the second groove.
[0021] When the control lever is at the first stop point, the third and fourth clamping arms separate from each other.
[0022] When the control lever is at the second movement stop point, the third and fourth clamping arms move closer to each other, and the flanges at the third and fourth grooves engage with each other.
[0023] Furthermore, the first elastic element includes a torsion spring. The second elastic element includes a natural rubber elastomer.
[0024] Furthermore, the first clamping arm has a first notch, which is formed by the end face of the hinge end of the first clamping arm being recessed inward.
[0025] The second clamping arm has a second notch, which is formed by the end face of the hinge end of the second clamping arm being recessed inward.
[0026] The first gap and the second gap are set accordingly, and the first gap and the second gap constitute a matching gap.
[0027] The second clamp is connected to an elastic post, which is connected to the hinge end of both the third and fourth clamping arms and is located on the side away from the opening of the second clamp.
[0028] When the control lever is at the first movement stop point, the outer diameter of the elastic column matches the inner diameter of the mating notch, and the elastic column can be damped and mated in the mating notch.
[0029] When the control lever moves from the first motion stop point to the second motion stop point, the first clamping arm and the second clamping arm elastically compress the elastic column.
[0030] Furthermore, the elastic column is made of natural rubber.
[0031] Furthermore, the second clamp is connected to the bottom of the bag body via an elastic post.
[0032] The beneficial effects of the technical solutions in this application include: The entire sampling process only requires the operation end and the sample bag to work together, and the second clamp can perform the functions of gripping and cutting the sample to avoid sample adhesion. During the operation, the bag body is turned outward to wrap around the cylinder. Even if the outside of the cylinder accidentally touches the sample during the sampling process, the bag body will block it (the actual contact is with the inside of the bag body), and will not contaminate the outside of the cylinder. Therefore, the operation end is unlikely to become a contamination transmission route.
[0033] After sampling, the sample is mainly located at the bottom of the bag body and in the second clamp. If it is necessary to cut and observe the sample, the second clamp can be operated directly through the bag body to cut the sample using the flange, so as to meet the needs of preliminary observation and judgment of whether the sample is qualified.
[0034] Overall, the sampling device for detecting brominated flame retardants in food provided in this application can effectively reduce the consumption of consumables during batch sampling, while ensuring the independence of samples and avoiding sample contamination. Attached Figure Description
[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1A schematic diagram of the operating end of the sampling device provided in the embodiment of this application (the control lever is at the first motion stop point); Figure 2 This is a schematic diagram of the structure of the first fixture; Figure 3 This is a schematic diagram of the operating end of the sampling device (the control lever is at the second motion stop point). Figure 4 This is a schematic diagram of the sample bag structure; Figure 5 This is a schematic diagram showing the state of the sample bag when it is installed in the first fixture. Figure 6 This is a schematic diagram showing the sample bag installed at the operating end. Figure 7 This is a schematic diagram showing the state of the operating end during the movement of the control lever from the first motion stop point to the second motion stop point. Figure 8 for Figure 7 A schematic diagram of the state of the first fixture.
[0037] Explanation of reference numerals in the attached figures: Cylinder body 100; sealing plate 110; control rod 200; first clamping arm 210; first groove 211; first notch 212; second clamping arm 220; second groove 221; second notch 222; bag body 300; third clamping arm 400; third groove 410; fourth clamping arm 500; fourth groove 510; flange 600; elastic column 700. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] The terms “first,” “second,” “third,” “fourth,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0042] Furthermore, the terms "vertical" and "parallel" do not mean that the parts must be absolutely vertical or parallel, but can be slightly tilted.
[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0044] The technical solutions of this application will be described by way of example through some embodiments below.
[0045] See Figures 1-3 This application provides a sampling device for detecting brominated flame retardants in food, which includes an operating end and a sample bag.
[0046] The operating end includes: cylinder 100, control rod 200, first clamping arm 210 and second clamping arm 220.
[0047] The control lever 200 is located inside the cylinder 100, and is axially arranged along the cylinder 100 and slidably fitted into the cylinder 100. The control lever 200 is driven by a drive component. The drive component can be a manual drive component (e.g., a manual push-pull lever) or an electric drive component (e.g., a linear actuator).
[0048] The first clamping arm 210 and the second clamping arm 220 are both installed at one end of the control lever 200.
[0049] One end of the first clamping arm 210 is hinged to one end of the second clamping arm 220 and simultaneously engages with the end of the control lever 200.
[0050] The first clamping arm 210 and the second clamping arm 220 constitute the first clamp.
[0051] A first groove 211 is formed on the side of the first clamping arm 210 near the second clamping arm 220, and a second groove 221 is formed on the side of the second clamping arm 220 near the first clamping arm 210. The first groove 211 and the second groove 221 are correspondingly arranged. When the free ends of the first clamping arm 210 and the second clamping arm 220 approach each other and are in contact with each other, the side of the first clamping arm 210 near the second clamping arm 220 and the side of the second clamping arm 220 near the first clamping arm 210 can be in contact with each other, and the first groove 211 and the second groove 221 together form the internal space of the first clamp.
[0052] The hinged ends of the first clamping arm 210 and the second clamping arm 220 are fitted with a first elastic element (not shown in the figure). In the natural state, the first elastic element drives the free ends of the first clamping arm 210 and the second clamping arm 220 to separate from each other, thereby opening the first clamp.
[0053] When the control rod 200 moves along the axial direction of the cylinder 100, the control rod 200 has a first movement stop point and a second movement end point.
[0054] When the control lever 200 is at the first movement stop point, the control lever 200 extends completely through the cylinder 100, that is, the control lever 200, carrying the first clamp, passes through the cylinder 100, so that the first clamp is outside the cylinder 100. At this time, the first clamping arm 210 and the second clamping arm 220 separate from each other, as... Figure 1 As shown.
[0055] When the control lever 200 is at the second movement stop point, the end of the control lever 200 is located inside the cylinder 100. The first clamp is pulled back into the cylinder 100 by the control lever 200. Due to the restraining effect of the cylinder 100, the side wall of the cylinder 100 pushes the first clamping arm 210 and the second clamping arm 220 closer together. Figure 3 As shown, the width of the first clamp when it is open is greater than the inner diameter of the cylinder 100. When the first clamp is inside the cylinder 100, the first clamping arm 210 and the second clamping arm 220 move closer to each other.
[0056] In this embodiment, one end of the cylinder 100 is closed by the sealing plate 110, the control rod 200 passes through the sealing plate 110 and extends into the cylinder 100, and the first clamp is located on the side of the sealing plate 110 close to the cylinder 100.
[0057] In this embodiment, the side of the first clamping arm 210 away from the second clamping arm 220 and the side of the second clamping arm 220 away from the first clamping arm 210 are both smoothed, and the inner wall of the cylinder 100 is also smoothed.
[0058] Please combine Figure 4 The sample bag includes: bag body 300, third clamping arm 400 and fourth clamping arm 500.
[0059] One end of the third clamping arm 400 is connected to one end of the fourth clamping arm 500. The third clamping arm 400 and the fourth clamping arm 500 are flexibly connected. The free ends of the third clamping arm 400 and the fourth clamping arm 500 can approach and separate from each other. The third clamping arm 400 and the fourth clamping arm 500 constitute the fourth clamp.
[0060] A third groove 410 is provided on the side of the third clamping arm 400 near the fourth clamping arm 500, and a fourth groove 510 is provided on the side of the fourth clamping arm 500 near the third clamping arm 400.
[0061] The connection ends of the third clamping arm 400 and the fourth clamping arm 500 are fitted with a second elastic element (not shown in the figure). In the natural state, the second elastic element drives the free ends of the third clamping arm 400 and the fourth clamping arm 500 to separate from each other.
[0062] The fourth clamp is located inside the bag body 300 and is set at the bottom of the bag body 300. The hinge ends of the third clamp arm 400 and the fourth clamp arm 500 are connected to the bottom of the bag body 300.
[0063] The surface of the third clamping arm 400 away from the fourth clamping arm 500 is adapted to the groove wall of the first groove 211 so that the side of the third clamping arm 400 away from the fourth clamping arm 500 can fit into the first groove 211, thereby allowing the third clamping arm 400 to be assembled into the first clamping arm 210.
[0064] The surface of the fourth clamping arm 500 away from the third clamping arm 400 is adapted to fit the groove wall of the second groove 221, so that the side of the fourth clamping arm 500 away from the third clamping arm 400 can fit into the second groove 221, thereby allowing the fourth clamping arm 500 to be assembled into the second clamping arm 220. Figure 5 As shown.
[0065] In other words, the second clamp is used to assemble into the first clamp so that the third clamping arm 400 engages with the first groove 211 and the fourth clamping arm 500 engages with the second groove 221.
[0066] Both the third groove 410 and the fourth groove 510 have flanges 600 on their edges, and the top of the flanges 600 has a cutting edge.
[0067] After the second clamp is assembled into the first clamp: when the control lever 200 is at the first movement stop, the first clamping arm 210 and the second clamping arm 220 separate from each other, and therefore the third clamping arm 400 and the fourth clamping arm 500 also separate from each other. When the control lever 200 is at the second movement stop, the first clamping arm 210 and the second clamping arm 220 move closer together, thereby driving the third clamping arm 400 and the fourth clamping arm 500 to move closer together. After the third clamping arm 400 and the fourth clamping arm 500 move closer together, the flange 600 at the edge of the third groove 410 and the flange 600 at the edge of the fourth groove 510 engage with each other, thereby enabling the "cutting" function to be achieved using the cutting edge of the flange 600.
[0068] In actual use, the control lever 200 on the operating end is first driven to the first movement stop. At this time, the first clamping arm 210 and the second clamping arm 220 are separated from each other, and the first clamp is in the open state, such as... Figure 1 As shown.
[0069] At this point, the sample bag can be installed on the operating end. Specifically, the second clamp is installed into the first clamp through the bag body 300, so that the third clamping arm 400 fits into the first groove 211 of the first clamping arm 210, and the fourth clamping arm 500 fits into the second groove 221 of the second clamping arm 220. A layer of bag body 300 separates the third clamping arm 400 from the first clamping arm 210, and a layer of bag body 300 also separates the fourth clamping arm 500 from the second clamping arm 220. Figure 5 As shown.
[0070] Next, the bag body 300 is turned inside out from its opening, and the remaining part of the bag body 300 is then folded inside out and placed over the outer wall of the same body, as shown. Figure 6 As shown. Sampling can then begin.
[0071] During sampling, the second clamp is extended toward the sample. After the sample enters the second clamp, the drive control rod 200 moves from the first motion stop point to the second motion stop point. At this time, the first clamp will drive the second clamp to close, thereby "grabbing" the sample into the second clamp.
[0072] Furthermore, the control lever 200 can be driven to move to one end of the cylinder 100 near the sealing plate 110, so that the first clamp moves with the second clamp toward the end of the cylinder 100, so that the second clamp enters the inside of the cylinder 100. During this process, the second clamp pulls the bag body 300, and the bag body 300 is detached from the outside of the cylinder 100 and flipped back.
[0073] Finally, by re-driving the control lever 200 back to the first stop point, the entire sample bag can be removed from the first clamp. This completes one sampling operation.
[0074] With the above design, the entire sampling process only requires the operation end and the sample bag to work together, and the second clamp can perform the functions of gripping and cutting the sample, avoiding sample adhesion. During operation, the bag body 300 folds outward to wrap around the cylinder 100. Even if the outside of the cylinder 100 accidentally touches the sample during sampling, the bag body 300 will block it (the actual contact is with the inside of the bag body 300), and will not contaminate the outside of the cylinder 100. Therefore, the operation end is unlikely to become a contamination transmission route.
[0075] In addition, after sampling is completed, the sample is mainly located at the bottom of the bag body 300 and mainly in the second clamp. At this time, if it is necessary to cut and observe the sample, the second clamp can be operated directly through the bag body 300, and the flange 600 can be used to cut the sample to meet the needs of preliminary observation and judgment of whether the sample is qualified.
[0076] Overall, the sampling device for detecting brominated flame retardants in food provided in this application can effectively reduce the consumption of consumables during batch sampling, while ensuring the independence of samples and avoiding sample contamination.
[0077] In this embodiment, the first elastic element can be a torsion spring. The second elastic element can be a natural rubber elastomer. However, it is not limited to these examples.
[0078] Furthermore, the first clamping arm 210 has a first notch 212, which is formed by the indentation of the end face of the hinge end of the first clamping arm 210. The first notch 212 is located at the middle position of the end of the first clamping arm 210.
[0079] The second clamping arm 220 has a second notch 222, which is formed by a recess in the end face of the hinge end of the second clamping arm 220. The second notch 222 is located at the middle position of the end of the second clamping arm 220.
[0080] The first gap 212 and the second gap 222 are set accordingly, and the first gap 212 and the second gap 222 constitute a matching gap.
[0081] The second clamp is connected to an elastic post 700, which is connected to the hinge end of both the third clamp arm 400 and the fourth clamp arm 500 and located on the side away from the opening of the second clamp. The elastic post 700 is made of natural rubber, and the second clamp is connected to the bottom of the bag body 300 via the elastic post 700. Specifically, the elastic post 700 penetrates the bottom of the bag body 300 and is sealed to the bottom of the bag body 300.
[0082] When the control lever 200 is at the first movement stop, the first clamp is in the open state. At this time, the diameter of the mating notch reaches its maximum, such as... Figure 2 As shown. The outer diameter of the elastic column 700 is... Figure 2 The inner diameter of the mating notch is adapted to the mating notch, and the elastic column 700 can be damped and fitted into the mating notch.
[0083] When the sample bag is installed in the first clamp, the third clamping arm 400 is engaged in the first groove 211 of the first clamping arm 210, and the fourth clamping arm 500 is engaged in the second groove 221 of the second clamping arm 220, while the elastic post 700 is simultaneously inserted into the mating notch. Because there is damping between the elastic post 700 and the mating notch, the sample bag can be effectively prevented from accidentally detaching from the first clamp.
[0084] During sampling, as the control lever 200 moves from the first motion stop point to the second motion stop point, the first clamping arm 210 and the second clamping arm 220 begin to move closer together, as... Figure 7 and Figure 8 As shown, at this point, the diameter of the notch begins to decrease, causing the first clamp to elastically compress the elastic column 700, thereby further clamping the elastic column 700. When the first clamp pulls the second clamp into the cylinder 100, it effectively prevents the sample bag from accidentally coming out of the first clamp.
[0085] After sampling is completed, when the control lever 200 returns to the first motion stop point, the first clamp releases the elastic column 700 again, and the sample bag can be removed smoothly.
[0086] When taking multiple samples, only the sample bag needs to be changed.
[0087] In summary, the sampling device for detecting brominated flame retardants in food provided in this application can effectively reduce the consumption of consumables during batch sampling, while ensuring the independence of samples and avoiding sample contamination.
[0088] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A sampling device for detecting brominated flame retardants in food, characterized in that, include: Operating end and sample bag; The operating end includes: a cylinder, a control rod, a first clamping arm, and a second clamping arm; The control rod is disposed inside the cylinder, and the control rod is arranged along the axial direction of the cylinder and slidably engaged with the cylinder; the control rod is driven by a drive component. Both the first clamping arm and the second clamping arm are mounted on one end of the control rod; one end of the first clamping arm is hinged to one end of the second clamping arm, and a first groove is provided on the side of the first clamping arm near the second clamping arm, and a second groove is provided on the side of the second clamping arm near the first clamping arm. The first clamping arm and the second clamping arm constitute the first clamp; The hinge ends of the first clamping arm and the second clamping arm are fitted with a first elastic element so that, in the natural state, the first elastic element drives the free ends of the first clamping arm and the second clamping arm to separate from each other. The control lever has a first stop point and a second end point; When the control lever is at the first movement stop point, the control lever extends completely through the cylinder, the first clamp is located outside the cylinder, and the first clamping arm and the second clamping arm are separated from each other. When the control lever is at the second movement stop point, the end of the control lever is located inside the cylinder, the first clamp is located inside the cylinder, and the first clamping arm and the second clamping arm are close to each other; The sample bag includes: a bag body, a third clamping arm, and a fourth clamping arm; One end of the third clamping arm is connected to one end of the fourth clamping arm. A third groove is provided on the side of the third clamping arm near the fourth clamping arm, and a fourth groove is provided on the side of the fourth clamping arm near the third clamping arm. A second elastic element is fitted at the connection end of the third clamping arm and the fourth clamping arm. In the natural state, the second elastic element drives the free ends of the third clamping arm and the fourth clamping arm to separate from each other. The third clamping arm and the fourth clamping arm constitute a fourth clamp; the fourth clamp is located inside the bag body, and the hinged ends of the third clamping arm and the fourth clamping arm are connected to the bottom of the bag body. The surface of the third clamping arm away from the fourth clamping arm is adapted to the groove wall of the first groove, and the surface of the fourth clamping arm away from the third clamping arm is adapted to the groove wall of the second groove. Both the third groove and the fourth groove have flanges on their edges, and the top of the flanges has a cutting edge; The second clamp is used to assemble into the first clamp so that the third clamping arm engages with the first groove and the fourth clamping arm engages with the second groove; When the control lever is at the first movement stop point, the third clamping arm and the fourth clamping arm separate from each other; When the control lever is at the second movement stop point, the third clamping arm and the fourth clamping arm move closer to each other, and the flanges at the third groove and the fourth groove engage with each other.
2. The sampling device for detecting brominated flame retardants in food according to claim 1, characterized in that, The first elastic element includes a torsion spring; the second elastic element includes a natural rubber elastomer.
3. The sampling device for detecting brominated flame retardants in food according to claim 1, characterized in that, The first clamping arm has a first notch, which is formed by the end face of the hinge end of the first clamping arm being recessed inward. The second clamping arm has a second notch, which is formed by the end face of the hinge end of the second clamping arm being recessed inward. The first notch and the second notch are provided correspondingly, and the first notch and the second notch constitute a mating notch; The second clamp is connected to an elastic post, which is connected to the hinge end of both the third clamp arm and the fourth clamp arm and is located on the side away from the opening of the second clamp. When the control rod is at the first movement stop point, the outer diameter of the elastic column is adapted to the inner diameter of the mating notch, and the elastic column can be mated in the mating notch with damping. When the control lever moves from the first motion stop point to the second motion stop point, the first clamping arm and the second clamping arm elastically compress the elastic column.
4. The sampling device for detecting brominated flame retardants in food according to claim 3, characterized in that, The elastic column is made of natural rubber.
5. The sampling device for detecting brominated flame retardants in food according to claim 3, characterized in that, The second clamp is connected to the bottom of the bag body via the elastic post.