Sample liquid extractor for dairy product detection

Abstract

The utility model discloses a sample liquid extractor for dairy product detection, and relates to the technical field of extractors, the sample liquid extractor comprises a fixing sleeve, an extraction cylinder and an air suction assembly, the extraction cylinder is fixedly connected in the fixing sleeve, and the air suction assembly is located at the top of the extraction cylinder; the sample liquid extractor for dairy product detection is provided with the extraction cylinder, after the extraction work is completed, the protective sleeve is re-installed on the outer side of the needle tube, the extraction cylinder is taken out from the interior of the fixed cylinder, the extraction cylinder is fixed to the inner top of the fixed cylinder, the extraction cylinder is fixed to the inner top of the fixed cylinder, and the limiting ring is internally provided with an air suction hole which is of a conical structure and is made of a rubber material. According to the method provided by the invention, the extraction cylinder is directly stored without internal sample transfer operation, so that pollution possibly caused in the transfer process is avoided, different samples can be conveniently sampled by simply replacing the extraction cylinder, and in addition, by replacing the extraction cylinder, the sampling efficiency is greatly improved. And cross contamination between samples is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of extractors, in particular to a sample liquid extractor for dairy product detection. Background Art

[0002] The sample extractor for dairy product testing is an important tool in the dairy industry. It is mainly used to extract liquid samples from dairy product samples for subsequent testing and analysis.

[0003] For example, a sample liquid extraction device for dairy product testing with publication number CN218297690U relates to the technical field of dairy products, and comprises a suction tube, wherein a piston is sleeved inside the suction tube, the upper surface of the piston is fixedly connected to a connecting rod, the top of the connecting rod is fixedly connected to a limiting disk, the outer surface of the limiting disk is fixedly connected to two symmetrical sliding blocks, and the limiting disk is sleeved with the suction tube. The sample liquid extraction device for dairy product testing achieves the purpose of heating the dairy product inside the suction tube through the cooperation of the suction tube and the heater, thereby achieving the effect of avoiding subsequent heating and cooling again, and achieves the purpose of the heated dairy product flowing into the sample bottle through the cooperation of the sample bottle and the sealing disk, thereby avoiding the contact of the dairy product with the external environment, thereby achieving the effect of avoiding the influence of the external environment on the detection result of the dairy product, thereby solving the problem that common sampling is prone to continuous contact with the external environment and is not easy to heat.

[0004] The above-mentioned comparative document achieves the purpose of heating the dairy products inside the suction cylinder by cooperating with the suction cylinder and the heater. The existing dairy sampler needs to transfer the sample to another storage container after sampling. There is a risk of contamination during the sample transfer process. At the same time, the repeated use of the sampler may cause cross-contamination of the internal space. Utility Model Content

[0005] The utility model aims to provide a sample liquid extractor for dairy product testing, so as to solve the problem that there is a risk of contamination during sample transfer in the above-mentioned background technology, and repeated use of the sampler may cause cross contamination of the internal space.

[0006] To achieve the above object, the utility model provides the following technical solutions: a sample liquid extractor for dairy product testing, comprising a fixed sleeve, an extraction cylinder, and an air suction component, wherein the extraction cylinder is fixedly connected to the inside of the fixed sleeve, and the air suction component is located at the top of the extraction cylinder;

[0007] A limiting ring is fixedly connected to the top of the extraction cylinder, and an air suction hole is arranged inside the limiting ring, and the air suction hole is a conical structure, and the limiting ring is made of rubber. An opening is arranged on the top of the extraction cylinder, and a connecting valve is fixedly connected to the top of the extraction cylinder, and the bottom of the connecting valve is communicated with the inside of the opening, and the opening is communicated with the opening at the top of the extraction cylinder. A rubber piston A is slidably connected to the inside of the extraction cylinder, and a limiting ring is fixedly connected to the top side of the rubber piston A, and a sealing block is fixedly connected to the middle of the top of the rubber piston A.

[0008] Furthermore, a cavity is formed between the limiting ring and the inner wall of the extraction tube, and the limiting ring is slidably connected to the inside of the cavity. The shape of the sealing block matches the shape of the inner side of the air suction hole, and the sealing block is snap-connected to the inside of the air suction hole.

[0009] Furthermore, the rubber piston A divides the extraction cylinder into two spaces inside the extraction cylinder, and the space located at the top of the rubber piston A is a suction chamber, and the space located at the bottom of the rubber piston A is a suction chamber.

[0010] Furthermore, a suction tube is fixedly connected to the bottom of the extraction cylinder, and the suction tube is communicated with the inside of the suction chamber. A needle tube is snap-fitted to the outside of the suction tube, and a protective sleeve is snap-fitted to the outside of the needle tube.

[0011] Furthermore, the connecting valve is provided with a ventilation pipe, a connecting ring is fixedly connected to the outside of the ventilation pipe, and a fixing rod is fixedly connected to the middle of the inside of the ventilation pipe, a slider is slidably connected to the outside of the lower end of the fixing rod, and a sealing ring is fixedly connected to the inner side of the ventilation pipe, and the outer side of the slider is fitted with the inner side of the sealing ring, and the fixing rod, slider and sealing ring form a one-way valve structure with each other.

[0012] Furthermore, a fixed cylinder is fixedly connected to the inner side of the fixed sleeve, and a support frame is fixedly connected to the top of the fixed cylinder, and a pipe joint is provided in the middle of the support frame. Fixed plates are symmetrically fixedly connected to the two sides of the fixed cylinder, and the fixed plates are made of elastic material, and the inside of the fixed cylinder is clamped on the outside of the extraction cylinder.

[0013] Furthermore, the air suction assembly is provided with an air suction cylinder, and a pull rod is slidably connected inside the air suction cylinder, and a rubber piston B is fixedly connected to the lower end of the pull rod. The rubber piston B is slidably connected to the inside of the air suction cylinder, and the rubber piston B fits tightly to the side of the air suction cylinder. An opening is provided at the bottom of the air suction cylinder, and a pipe joint is fixedly connected to the opening and the middle of the support frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The sample liquid extractor for dairy product testing is provided with an extraction cylinder. When the extraction work is completed, the protective cover is reinstalled on the outside of the needle tube, and the extraction cylinder is taken out from the inside of the fixed cylinder, and then the extraction cylinder is directly stored without the need to perform an internal sample transfer operation. This practice not only avoids possible contamination during the transfer process, but also allows us to conveniently sample different samples by simply replacing the extraction cylinder. In addition, by replacing the extraction cylinder, cross contamination between samples is prevented;

[0016] Furthermore, a fixing sleeve is provided, and the connecting valve at the end of the extraction cylinder is placed inside the pipe joint provided in the middle of the support frame. Then, the extraction cylinder is rotated around the pipe joint. Since the fixing plate has elastic characteristics, the extraction cylinder is smoothly passed through the gap between the two fixing plates by applying appropriate downward pressure, thereby successfully installing the extraction cylinder inside the fixing sleeve. If the extraction cylinder needs to be taken out from the inside of the fixing cylinder, only the reverse operation steps need to be performed, and the extraction cylinder can be easily replaced, so as to facilitate replacement;

[0017] Furthermore, when the internal airflow of the connecting valve presents a flow direction from bottom to top, forming an ascending airflow, the airflow will lift the slider to make it slide on the end of the fixed rod. This process forms a certain gap between the slider and the sealing ring, so that the ascending airflow can pass through the gap between the slider and the sealing ring. On the contrary, when the airflow direction changes to a descending airflow from top to bottom, the airflow will drive the slider to move downward. This movement makes the slider fit tightly with the sealing ring, thereby closing the internal space of the ventilation pipe, thereby ensuring that the connecting valve forms a one-way valve structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixing sleeve of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the extraction tube of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the valve of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the utility model;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the air intake assembly of the utility model.

[0024] In the figure: 1. fixing sleeve; 2. extraction cylinder; 3. suction assembly; 4. limiting ring; 5. suction hole; 6. connecting valve; 601. ventilation pipe; 602. connecting ring; 603. fixing rod; 604. sliding block; 605. sealing ring; 7. rubber piston A; 8. sealing block; 9. limiting ring; 10. needle tube; 11. protective sleeve; 12. fixing cylinder; 13. supporting frame; 14. fixing plate; 15. suction cylinder; 16. pulling rod; 17. rubber piston B. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In a further preferred embodiment of the present invention, Figure 1-Figure 4 As shown, a limiting ring 4 is fixedly connected to the top of the extraction cylinder 2, and an air suction hole 5 is arranged inside the limiting ring 4, and the air suction hole 5 is a conical structure, and the limiting ring 4 is made of rubber material, an opening is arranged on the top of the extraction cylinder 2, and a connecting valve 6 is fixedly connected to the top of the extraction cylinder 2, and the bottom of the connecting valve 6 is communicated with the inside of the opening, and the opening is communicated with the opening at the top of the extraction cylinder 2, a rubber piston A7 is slidably connected inside the extraction cylinder 2, and a limiting ring 9 is fixedly connected to the top side of the rubber piston A7, and a sealing block 8 is fixedly connected to the middle of the top of the rubber piston A7; a cavity is formed between the limiting ring 4 and the inner wall of the extraction cylinder 2, and the limiting ring 9 is slidably connected to the inside of the cavity, the shape of the sealing block 8 is consistent with the shape of the inner side of the air suction hole 5, and the sealing block 8 is snap-connected to the inside of the air suction hole 5; the rubber piston A7 is inside the extraction cylinder 2 The extraction cylinder 2 is divided into two spaces, and the one located at the top of the rubber piston A7 is the air extraction chamber, and the one located at the bottom of the rubber piston A7 is the suction chamber; a suction pipe is fixedly connected to the bottom of the extraction cylinder 2, and the suction pipe is communicated with the inside of the suction chamber, a needle tube 10 is snap-connected to the outside of the suction pipe, and a protective sleeve 11 is snap-connected to the outside of the needle tube 10; the connecting valve 6 is provided with a vent pipe 601, a connecting ring 602 is fixedly connected to the outside of the vent pipe 601, and a fixed rod 603 is fixedly connected to the middle of the vent pipe 601, a slider 604 is slidably connected to the outside of the lower end of the fixed rod 603, and a sealing ring 605 is fixedly connected to the side of the inside of the vent pipe 601, and the outer side of the slider 604 is fitted with the inner side of the sealing ring 605, and the fixed rod 603, the slider 604, and the sealing ring 605 form a one-way valve structure with each other;

[0027] First, the extraction cylinder 2 is installed inside the fixed cylinder 12. Subsequently, the gas in the vacuum chamber inside the extraction cylinder 2 is extracted through the action of the connecting valve 6, thereby forming a negative pressure environment inside the vacuum chamber. Since the vacuum chamber is located on the top of the rubber piston A7, the negative pressure environment will prompt the rubber piston A7 to move upward, thereby forming a negative pressure inside the suction chamber. Under this negative pressure state, the protective sleeve 11 is taken out from the outside of the needle tube 10, and the liquid is drawn into the suction chamber through the needle tube 10. As the rubber piston A7 continues to move upward, it will drive the limit ring 9 and the sealing block 8 to rise together until the limit ring 9 is located between the extraction cylinder 2 and the limit In the cavity formed between the rings 4, the sealing block 8 will fit tightly with the inner wall of the connecting valve 6, thereby effectively sealing the top of the extraction tube 2. When the extraction work is completed, the protective sleeve 11 is reinstalled on the outside of the needle tube 10, and the extraction tube 2 is taken out from the inside of the fixed tube 12, and then the extraction tube 2 is directly stored without the need for internal sample transfer operations. This approach not only avoids possible contamination during the transfer process, but also allows us to conveniently sample different samples by simply replacing the extraction tube 2. In addition, by replacing the extraction tube 2, cross contamination between samples is prevented.

[0028] In a further preferred embodiment of the present invention, Figure 5 As shown, a fixing cylinder 12 is fixedly connected to the inner side of the fixing sleeve 1, and a support frame 13 is fixedly connected to the top of the fixing cylinder 12, and a pipe joint is provided in the middle of the support frame 13, and fixing plates 14 are symmetrically fixedly connected to the two sides of the fixing cylinder 12, and the fixing plates 14 are made of elastic material, and the inside of the fixing cylinder 12 is clamped on the outside of the extraction cylinder 2;

[0029] Place the connecting valve 6 at the end of the extraction cylinder 2 inside the pipe joint provided in the middle of the support frame 13, and then rotate the extraction cylinder 2 around the pipe joint. Since the fixing plate 14 has elastic characteristics, the extraction cylinder 2 can smoothly pass through the gap between the two fixing plates 14 by applying appropriate downward pressure, thereby successfully installing the extraction cylinder 2 inside the fixing sleeve 1. If the extraction cylinder 2 needs to be taken out from the fixing cylinder 12, only the reverse operation steps need to be performed to easily replace the extraction cylinder 2 for easy replacement.

[0030] In a further preferred embodiment of the present invention, Figure 6 As shown, the air suction component 3 is provided with an air suction cylinder 15, and a pull rod 16 is slidably connected inside the air suction cylinder 15, and a rubber piston B17 is fixedly connected to the lower end of the pull rod 16, the rubber piston B17 is slidably connected to the inside of the air suction cylinder 15, and the rubber piston B17 is tightly fitted to the side of the air suction cylinder 15, an opening is provided at the bottom of the air suction cylinder 15, and a pipe joint is fixedly connected to the middle of the opening and the support frame 13;

[0031] After the extraction cylinder 2 is installed, pull the pull rod 16 to drive the rubber piston B17 to slide up inside the suction cylinder 15. This action will cause a negative pressure state to form at the bottom of the rubber piston B17, and then guide the suction cylinder 15 to form a negative pressure state. By connecting the valve 6 to the inside of the suction chamber, the gas in the suction chamber will be sucked into the suction cylinder 15, thereby forming the required negative pressure environment inside the suction chamber.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sample liquid extractor for dairy product testing, comprising a fixed sleeve (1), an extraction cylinder (2), and an air suction component (3), wherein the extraction cylinder (2) is fixedly connected to the inside of the fixed sleeve (1), and the air suction component (3) is located at the top of the extraction cylinder (2); Features: A limiting ring (4) is fixedly connected to the top of the extraction cylinder (2), and an air suction hole (5) is provided inside the limiting ring (4), and the air suction hole (5) is of a conical structure, and the limiting ring (4) is made of rubber. An opening is provided at the top of the extraction cylinder (2), and a connecting valve (6) is fixedly connected to the top of the extraction cylinder (2), and the bottom of the connecting valve (6) is in communication with the inside of the opening, and the opening is in communication with the opening at the top of the extraction cylinder (2). A rubber piston A (7) is slidably connected inside the extraction cylinder (2), and a limiting ring (9) is fixedly connected to the top side of the rubber piston A (7), and a sealing block (8) is fixedly connected to the middle of the top of the rubber piston A (7).

2. A sample liquid extractor for dairy product testing according to claim 1, characterized in that: A cavity is formed between the limiting ring (4) and the inner wall of the extraction tube (2), and the limiting ring (9) is slidably connected to the inside of the cavity. The shape of the sealing block (8) matches the shape of the inner side of the air suction hole (5), and the sealing block (8) is snap-fitted and connected to the inside of the air suction hole (5).

3. A sample liquid extractor for dairy product testing according to claim 1, characterized in that: The rubber piston A (7) divides the extraction cylinder (2) into two spaces inside the extraction cylinder (2), wherein the space located at the top of the rubber piston A (7) is a suction chamber, and the space located at the bottom of the rubber piston A (7) is a suction chamber.

4. A sample liquid extractor for dairy product testing according to claim 1, characterized in that: The bottom of the extraction cylinder (2) is fixedly connected with a suction tube, and the suction tube is communicated with the inside of the suction chamber. The outer side of the suction tube is snap-connected with a needle tube (10), and the outer side of the needle tube (10) is snap-connected with a protective sleeve (11).

5. The sample liquid extractor for dairy product testing according to claim 1, characterized in that: The connecting valve (6) is provided with a vent pipe (601), a connecting ring (602) is fixedly connected to the outside of the vent pipe (601), and a fixing rod (603) is fixedly connected to the middle of the inside of the vent pipe (601), a slider (604) is slidably connected to the outside of the lower end of the fixing rod (603), and a sealing ring (605) is fixedly connected to the side of the inside of the vent pipe (601), and the outside of the slider (604) is fitted with the inside of the sealing ring (605), and the fixing rod (603), the slider (604) and the sealing ring (605) mutually form a one-way valve structure.

6. A sample liquid extractor for dairy product testing according to claim 1, characterized in that: A fixing cylinder (12) is fixedly connected to the inner side of the fixing sleeve (1), and a support frame (13) is fixedly connected to the top of the fixing cylinder (12), and a pipe joint is provided in the middle of the support frame (13). Fixing plates (14) are symmetrically fixedly connected to the two sides of the fixing cylinder (12), and the fixing plates (14) are made of elastic material. The inside of the fixing cylinder (12) is engaged with the outside of the extraction cylinder (2).

7. A sample liquid extractor for dairy product testing according to claim 1, characterized in that: The air suction assembly (3) is provided with an air suction cylinder (15), and a pull rod (16) is slidably connected inside the air suction cylinder (15), and a rubber piston B (17) is fixedly connected to the lower end of the pull rod (16), the rubber piston B (17) is slidably connected to the inside of the air suction cylinder (15), and the rubber piston B (17) is tightly fitted to the side of the air suction cylinder (15), and an opening is provided at the bottom of the air suction cylinder (15), and a pipe joint is fixedly connected to the middle of the opening and the support frame (13).

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