A rapid sampling device for food raw material detection

Abstract

The utility model relates to liquid sampling instrument technical field, and disclose a kind of for food raw material detection's quick sampling device.The for food raw material detection's quick sampling device, including handheld cylinder, sampling tube and hollow pull rod, the inside of handheld cylinder is adapted with sampling tube, the device has fast assembly and sampling, reduces manual operation procedure, effectively prevents liquid backflow and cross contamination, and it is convenient to accurately control sampling amount etc.Advantages, solve the sampler to need multiple steps to complete sampling, first suction liquid, then align test tube injection, the whole process relies on manual operation, not only time-consuming and labor-consuming, also easy to cause sample spilling or pollution due to improper operation, especially in food raw material detection, often need to sample a variety of liquid continuously, existing technology requires to replace or thoroughly clean sampler after every sampling is completed, to avoid residual material to cause cross contamination, this greatly increases the work burden, reduces the problem of detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of liquid sampling instruments, specifically a rapid sampling device for testing food raw materials. Background Technology

[0002] Liquid sampling is a common procedure in food ingredient testing. Current technology typically uses traditional samplers, such as syringes or simple pipettes, for sampling. Specifically, operators must manually draw liquid samples using a sampler and then inject or transfer the samples into test tubes or other containers for testing.

[0003] Existing samplers require multiple steps to complete the sampling process: first, the liquid is drawn up, then it is injected into the test tube. The entire process relies on manual operation, which is not only time-consuming and labor-intensive, but also prone to sample spillage or contamination due to improper operation. Especially in the testing of food raw materials, it is often necessary to continuously sample multiple liquids. Existing technology requires that the sampler must be replaced or thoroughly cleaned after each sampling to avoid cross-contamination caused by residues. This greatly increases the workload and reduces the testing efficiency.

[0004] Therefore, a rapid sampling device for food raw material testing is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a rapid sampling device for food ingredient testing. It features quick assembly and disassembly for sampling, reduces manual operation steps, effectively prevents liquid backflow and cross-contamination, and facilitates precise control of the sampling volume. This solves the problem of existing samplers requiring multiple steps to complete sampling—first drawing the liquid, then injecting it into the test tube—which relies entirely on manual operation. This process is not only time-consuming and labor-intensive but also prone to sample spillage or contamination due to improper operation. Especially in food ingredient testing, where multiple liquids often require continuous sampling, existing technologies require the sampler to be replaced or thoroughly cleaned after each sampling to avoid cross-contamination from residues. This significantly increases workload and reduces testing efficiency.

[0007] (II) Technical Solution

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rapid sampling device for food raw material testing includes a handheld tube, a sampling tube, and a hollow pull rod. The inside of the handheld tube is adapted to the sampling tube. The front and rear sides of the lower end of the handheld tube are provided with flat cuts communicating with the inside. The lower end of the inner cavity of the sampling tube is provided with a flow-stopping component. The bottom of the sampling tube is provided with a suction tube communicating with the inside. The inside of the sampling tube is provided with a silicone piston. The top of the silicone piston is fixedly connected with a socket. The inner side of the socket is provided with an annular groove. The top of the handheld tube is provided with a hollow pull rod extending into the sampling tube and adapted to the socket. The bottom wall of the inner cavity of the hollow pull rod is fixedly connected with a mounting base. The inside of the mounting base is provided with connecting components extending to the left and right sides of the hollow pull rod and extending above them. The opposite ends of the connecting components are adapted to the socket and the annular groove. The top of the hollow pull rod is provided with an unlocking component extending into it and adapted to the upper end of the connecting component.

[0009] The beneficial effects of this utility model are:

[0010] This rapid sampling device for food raw material testing involves inserting the sampling tube into the lower end of the handheld tube, gripping the tube firmly through the flat cut while holding the handheld tube, and pushing the hollow pull rod to insert its lower end into the socket. The connecting component automatically engages with the annular groove, connecting the hollow pull rod to the socket. Pulling the hollow pull rod then moves the silicone piston upwards inside the sampling tube. Under negative pressure, the flow-stopping component opens upwards, allowing liquid to enter the sampling tube through the pipette and the flow-stopping component. After sampling, stopping the pull rod closes the flow-stopping component to prevent backflow. Pressing the unlocking component separates the connecting component from the annular groove, allowing the sampling tube containing the sample to be removed from the lower end of the handheld tube. The device can be used for subsequent sampling following the same procedure. It offers advantages such as rapid assembly and disassembly, reduced manual operation steps, and effective prevention of liquid backflow and cross-contamination.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, the connecting assembly includes a wedge-head connecting rod, a wedge-head driven rod, and a first return spring. The mounting base has wedge-head connecting rods that are symmetrically distributed on the left and right sides and extend to the outside of the hollow pull rod and are adapted to the annular groove. The top of each wedge-head connecting rod at opposite ends is fixedly connected to a wedge-head driven rod extending to the top of the mounting base. The opposite side of the wedge-head connecting rod is provided with a first return spring located inside the mounting base.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by pushing the hollow pull rod so that its lower end is inserted into the socket, the wedge head connecting rod automatically springs into the annular groove under the action of the first return spring, thereby realizing the connection between the hollow pull rod and the socket.

[0014] Furthermore, the flow-stopping assembly includes a frame plate and a cross-shaped silicone one-way valve plate. The lower end of the inner cavity of the sampling tube is fixedly connected to the frame plate, and the frame plate is embedded with cross-shaped silicone one-way valve plates that are distributed left and right and have opposite opening directions.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the cross-shaped silicone check valve is arranged with left and right sides and opposite opening directions. During the sampling process, the right cross-shaped silicone check valve opens to allow liquid to be drawn in and closes quickly after the pressure disappears, effectively preventing liquid backflow and leakage. When it is necessary to drain the liquid in the sampling tube, press the silicone piston, and the pressure will open the left cross-shaped silicone check valve to allow the liquid to be drained, thus achieving the sealing of the liquid inside the sampling tube after sampling.

[0016] Furthermore, the unlocking assembly includes a pressure rod, a second return spring, and a conical groove. The top of the hollow pull rod is provided with a pressure rod that extends into and is adapted to it. The inner side of the groove of the pressure rod is fitted with a second return spring that abuts against the annular protrusion on the inner wall of the hollow pull rod. The bottom of the pressure rod is provided with a conical groove that is adapted to the wedge driven rod.

[0017] The beneficial effect of adopting the above-mentioned further solution is that pressing the pressure rod compresses the second return spring, which in turn causes the conical groove at the bottom of the pressure rod to contact the driven rod of the wedge head. The conical groove then drives the driven rod of the wedge head to move to its opposite side, thereby driving the wedge head connecting rod to move to its opposite side, so that the wedge head connecting rod separates from the annular groove, and the sampling tube can be taken out from the lower end of the handheld tube.

[0018] Furthermore, the outer side of the upper end of the hollow pull rod is engraved with volume scale lines that are compatible with the sampling tube.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the volume scale line is precisely calibrated according to the inner diameter and stroke of the sampling tube, which allows the operator to intuitively read the liquid volume, avoids over- or under-sampling, and improves the accuracy and repeatability of food testing data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a sectional view of the hollow tie rod structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the handheld tube structure of this utility model;

[0023] Figure 4 This is an enlarged schematic diagram of the structure at point a of this utility model;

[0024] Figure 5 This is an enlarged schematic diagram of the structure at point b of this utility model.

[0025] In the diagram: 1. Handheld tube; 2. Sampling tube; 3. Hollow pull rod; 4. Flat cut; 5. Flow stop assembly; 501. Frame plate; 502. Cross silicone one-way valve plate; 6. Straw; 7. Silicone piston; 8. Socket; 9. Annular groove; 10. Assembly base; 11. Connecting assembly; 111. Wedge connecting rod; 112. Wedge driven rod; 113. First return spring; 12. Unlocking assembly; 121. Pressure rod; 122. Second return spring; 123. Conical groove; 13. Volume scale line. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the embodiments, by Figure 1-5 Provided is a rapid sampling device for food raw material testing. This utility model includes a handheld tube 1, a sampling tube 2, and a hollow pull rod 3. The interior of the handheld tube 1 is adapted to the sampling tube 2. The lower end of the handheld tube 1 has flat slits 4 communicating with its interior on both the front and rear sides. The lower end of the sampling tube 2's inner cavity is equipped with a flow-stopping component 5. The bottom of the sampling tube 2 has a suction tube 6 communicating with its interior. A silicone piston 7 is located inside the sampling tube 2. A socket 8 is fixedly connected to the top of the silicone piston 7. An annular groove 9 is provided on the inner side. A hollow pull rod 3 is provided at the top of the handheld tube 1, extending into the sampling tube 2 and adapted to the socket 8. An assembly seat 10 is fixedly connected to the bottom wall of the inner cavity of the hollow pull rod 3. A connecting component 11 is provided inside the assembly seat 10, extending to the left and right sides of the hollow pull rod 3 and extending to its top. The opposite ends of the connecting component 11 are adapted to the socket 8 and the annular groove 9. An unlocking component 12 is provided at the top of the hollow pull rod 3, extending into its interior and adapted to the upper end of the connecting component 11.

[0028] The connecting assembly 11 includes a wedge connecting rod 111, a wedge driven rod 112, and a first return spring 113. The mounting base 10 has a wedge connecting rod 111 that is symmetrically distributed on the left and right sides and extends to the outside of the hollow pull rod 3 and is adapted to the annular groove 9. The top of the opposite end of the wedge connecting rod 111 is fixedly connected to the wedge driven rod 112 that extends to the top of the mounting base 10. The opposite side of the wedge connecting rod 111 is provided with a first return spring 113 located inside the mounting base 10.

[0029] The flow-stopping assembly 5 includes a frame plate 501 and a cross-shaped silicone one-way valve plate 502. The lower end of the inner cavity of the sampling tube 2 is fixedly connected to the frame plate 501. The frame plate 501 is embedded with cross-shaped silicone one-way valve plates 502 that are distributed on the left and right and have opposite opening directions.

[0030] The unlocking assembly 12 includes a pressure rod 121, a second return spring 122, and a conical groove 123. The top of the hollow pull rod 3 is provided with a pressure rod 121 that extends into and is adapted to it. The inner side of the groove of the pressure rod 121 is fitted with a second return spring 122 that abuts against the annular protrusion on the inner wall of the hollow pull rod 3. The bottom of the pressure rod 121 is provided with a conical groove 123 that is adapted to the wedge driven rod 112.

[0031] The outer side of the upper end of the hollow pull rod 3 is engraved with volume scale lines 13 that are compatible with the sampling tube 2.

[0032] Working principle:

[0033] Step 1: Insert the sampling tube 2 from the lower end of the handheld tube 1. While holding the handheld tube 1, grip the sampling tube 2 through the flat cut 4. Push the hollow pull rod 3 so that its lower end is inserted into the socket 8. The wedge head connecting rod 111 automatically springs into the annular groove 9 under the action of the first return spring 113, thus realizing the connection between the hollow pull rod 3 and the socket 8.

[0034] Step 2: Pull the hollow lever 3 to move the silicone piston 7 upward inside the sampling tube 2. Under negative pressure, the right cross silicone one-way valve 502 opens to allow liquid to be drawn in. During this process, the operator can intuitively read the liquid volume through the volume scale line 13 to avoid over- or under-sampling. After sampling, stop pulling the hollow lever 3. After the pressure disappears, the right cross silicone one-way valve 502 closes quickly to effectively prevent liquid backflow and leakage.

[0035] Step 3: Press down on the pressure rod 121, and at the same time compress the second return spring 122. Then, the conical groove 123 at the bottom of the pressure rod 121 contacts the wedge driven rod 112. The conical groove 123 drives the wedge driven rod 112 to move to its opposite side, which in turn drives the wedge connecting rod 111 to move to its opposite side, so that the wedge connecting rod 111 separates from the annular groove 9. The sampling tube 2 containing the sample can then be taken out from the lower end of the handheld tube 1. When sampling again, sampling can be performed according to the above description.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid sampling device for testing food raw materials, comprising a handheld tube (1), a sampling tube (2), and a hollow pull rod (3), characterized in that: The inside of the handheld tube (1) is adapted to the sampling tube (2). The front and rear sides of the lower end of the handheld tube (1) are provided with flat cutouts (4) communicating with its interior. The lower end of the inner cavity of the sampling tube (2) is provided with a flow-stopping component (5). The bottom of the sampling tube (2) is provided with a suction tube (6) communicating with its interior. The inside of the sampling tube (2) is provided with a silicone piston (7). The top of the silicone piston (7) is fixedly connected to a socket (8). The inner side of the socket (8) is provided with an annular groove (9). The top of the handheld tube (1)... A hollow pull rod (3) is provided that extends into the sampling tube (2) and is adapted to the socket (8). The bottom wall of the inner cavity of the hollow pull rod (3) is fixedly connected to the mounting base (10). The mounting base (10) is provided with connecting components (11) that extend to the left and right sides of the hollow pull rod (3) and extend to its top. The opposite ends of the connecting components (11) are adapted to the socket (8) and the annular groove (9). The top of the hollow pull rod (3) is provided with an unlocking component (12) that extends into its interior and is adapted to the upper end of the connecting component (11).

2. The rapid sampling device for food raw material testing according to claim 1, characterized in that: The flow-stopping assembly (5) includes a frame plate (501) and a cross-shaped silicone one-way valve plate (502). The lower end of the inner cavity of the sampling tube (2) is fixedly connected to the frame plate (501). The frame plate (501) is embedded with cross-shaped silicone one-way valve plates (502) that are distributed on the left and right and have opposite opening directions.

3. The rapid sampling device for food raw material testing according to claim 1, characterized in that: The connecting assembly (11) includes a wedge connecting rod (111), a wedge driven rod (112), and a first return spring (113). The mounting base (10) has a wedge connecting rod (111) that is symmetrically distributed on the left and right sides and extends to the outside of the hollow pull rod (3) and is adapted to the annular groove (9). The top of the opposite end of the wedge connecting rod (111) is fixedly connected to a wedge driven rod (112) that extends to the top of the mounting base (10). The opposite side of the wedge connecting rod (111) is provided with a first return spring (113) located inside the mounting base (10).

4. A rapid sampling device for food raw material testing according to claim 3, characterized in that: The unlocking assembly (12) includes a pressure rod (121), a second reset spring (122), and a conical groove (123). The top of the hollow pull rod (3) is provided with a pressure rod (121) that extends into and is adapted to it. The inner side of the groove of the pressure rod (121) is fitted with a second reset spring (122) that abuts against the annular protrusion on the inner wall of the hollow pull rod (3). The bottom of the pressure rod (121) is provided with a conical groove (123) that is adapted to the wedge driven rod (112).

5. A rapid sampling device for food raw material testing according to claim 1, characterized in that: The hollow pull rod (3) has volume scale lines (13) on the outer side of its upper end that are compatible with the sampling tube (2).

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