CN218098762U - Piston type migration test pool - Google Patents

Abstract

The utility model discloses a piston type migration testing pool, which comprises a base, a cavity and a piston; the bottom of the cavity is arranged on the base; the piston is assembled in the cavity to move up and down in the cavity; the piston includes a piston head with a vent hole disposed therein. The whole migration test pool is designed into a piston type, and the volume in the cavity can be continuously adjusted; because the test area S of the base is fixed, the volume in the cavity is adjusted by moving the piston up and down, so that the S/V ratio of soaking is changed, and the application range of the migration pool is wider; meanwhile, the exhaust hole is formed in the piston head, so that redundant air in the cavity can be conveniently discharged, and the piston can be conveniently detached when the whole transfer pool needs to be cleaned. When the device is used, after redundant air in the cavity is completely discharged, the vent hole is plugged by the matched rubber plug, so that the solution in the cavity is completely isolated from the outside air, and the simulation solution in the cavity is completely isolated from the outside air.

Description

Piston type migration test pool

Technical Field

The utility model relates to a food contact material detection area, concretely relates to piston migration test cell.

Background

The safety of food contact materials is closely related to food safety. To test the safety of food contact materials, migration tests on food contact materials are required. 3.3 in the national standard GB 5009.156-2016 specifically requires: the migration test assay object is a surface that may come into direct contact with food under reasonably expected use conditions. Therefore, a single-side migration test using a migration test cell is required for a sample that contacts food on one side and has inconsistent material properties on both sides. Some commonly used migration test pool illustrations are given in the standard, and some commercial migration test pools are also sold in the market at present, but one problem generally exists: the maximum volume (V) of each migration testing pool is a fixed value, the area (S) of the contact surface of the sample to be tested and the soak in the migration testing pool is also a fixed value, and if the soak completely fills the cavity of the whole migration testing pool, the soaking area/volume ratio (S/V ratio) can only be a fixed value; if need carry out the migration test under different S/V ratios, the immersion fluid just can not fill whole migration pond cavity, will lead to remaining more air in the cavity like this, if the easy oxidation of sample or the material that awaits measuring be easy volatile substance, in long-time migration test process, can lead to sample oxidation (if rust), or the material that awaits measuring (like formaldehyde) volatilizees to the air of intracavity top to lead to the test result inaccurate.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem existing in the background art, the utility model provides a piston type migration testing tank.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a piston type migration test cell comprises a base, a cavity and a piston; the bottom of the cavity is arranged on the base; the piston is assembled in the cavity to move up and down in the cavity; the piston includes a piston head with a vent hole disposed therein.

Further, the bottom of the cavity and the base are locked through a clamp.

Further, a rubber gasket is attached to the inner wall of the clamp.

Further, the bottom of the cavity extends outwards and is provided with an annular groove for embedding the sealing ring.

Further, the bottom edge and the base edge of the cavity are both designed to be oblique angles.

Furthermore, the cavity is made of transparent materials and is provided with scale marks.

Further, the surface of the piston head is subjected to sanding treatment.

Further, the piston head bottom chamfer design.

Further, the piston also comprises a piston mandrel and a piston handle; one end of the piston mandrel is connected with the piston head, and the other end of the piston mandrel is connected with the piston handle.

Further, the piston handle is arranged in a hexagonal shape, and the top of the piston handle is designed to be smooth.

Compared with the prior art, the utility model, its beneficial effect lies in:

the whole migration test pool is designed into a piston type, and the volume in the cavity can be continuously adjusted; because the test area S of the base is fixed, the volume in the cavity is adjusted by the up-and-down movement of the piston, so that the S/V ratio of soaking is changed, and the application range of the migration pool is wider; meanwhile, the exhaust hole is formed in the piston head, so that redundant air in the cavity can be conveniently discharged, and the piston can be conveniently detached when the whole transfer pool needs to be cleaned. When the device is used, after redundant air in the cavity is completely discharged, the vent hole is plugged by the matched rubber plug, so that the solution in the cavity is completely isolated from the outside air, and the simulation solution in the cavity is completely isolated from the outside air.

Drawings

Fig. 1 is a schematic view of an overall assembly of a piston-type migration testing cell according to an embodiment of the present invention;

FIG. 2 is a schematic view of the piston;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of the structure of the clamp;

FIG. 5 is a schematic view of a migration test cell with the piston removed and a glass cover added to the top of the chamber;

in the figure: 1. a base; 2. clamping a hoop; 3. a rubber seal ring; 4. a piston head; 5. a cavity; 6. an exhaust hole;

7. a piston handle; 8. a piston mandrel; 9. a rubber gasket.

Detailed Description

Example (b):

in the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; they may be mechanically coupled, directly coupled, or indirectly coupled through an intermediary, which may be referred to as communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Referring to fig. 1-5, the piston migration test cell provided in this embodiment mainly includes a base 1, a cavity 5, and a piston. The cavity 5 is used for being filled with the soaking liquid, the cavity 5 can be selected to have a proper area according to the size of an experimental sample, the bottom of the cavity 5 is installed on the base 1, and the piston is assembled in the cavity 5 to move up and down in the cavity 5 so as to adjust the volume of the cavity; the piston comprises a piston head 4, in which piston head 4 a vent hole 6 is provided.

Therefore, the whole migration testing pool is designed to be piston type, and the volume in the cavity can be continuously adjusted; because the test area S of the base is fixed, the volume in the cavity is adjusted by moving the piston up and down, so that the S/V ratio of soaking is changed, and the application range of the migration pool is wider; meanwhile, the exhaust hole is formed in the piston head, so that redundant air in the cavity can be conveniently discharged, and the piston can be conveniently detached when the whole transfer pool needs to be cleaned. When the device is used, after redundant air in the cavity is completely discharged, the vent hole is plugged by the matched rubber plug, so that the solution in the cavity is completely isolated from the outside air, and the simulation solution in the cavity is completely isolated from the outside air.

Preferably, the bottom of the cavity 5 and the base 1 are locked by a clamp 2. That is to say, base 1, clamp 2, cavity 5 and piston components of a whole that can function independently design, convenient washing and depositing, certain part damage can direct replacement. In addition, 2 convenient to use swiftly of clamp need not use other appurtenance during locking, locks cavity 5 and base 1 through clamp 2, both convenient and fast, and has good fastening effect. Preferably, a layer of rubber gasket 9 is adhered to the inner wall of the hoop 2, so that when the cavity 5 is clamped, the cavity 5 and the base 1 can be protected, and the clamping effect is better.

As another preference of this embodiment, the bottom of the chamber 5 extends outwards and is provided with an annular groove for embedding a rubber sealing ring. That is, the sealing performance between the base 1 and the cavity 5 is ensured by the rubber packing 3. In addition, the bottom edge and the base edge of this cavity 5 all design into the oblique angle, and when clamp 2 locked, atress evenly distributed was in oblique angle department to protection cavity 5 and base 1 also can guarantee that both assemble well, can not misplace. Preferably, this cavity 5 is cylindric glass transparent material and is provided with the scale mark, so, can be fast accurate toward cavity in the injection solution, transparent glass's cavity can monitor whether the air is got rid of completely in the cavity at any time, also can observe the experimental phenomenon of simulation liquid and sample.

As a further preferable mode of this embodiment, the piston head 4 is frosted on its surface to ensure both the sliding property of the piston and the sealing property in the chamber 5. In addition, the design of the chamfer at the bottom of the piston head 4 enables the piston to be more convenient to disassemble and assemble. Specifically, the piston further comprises a piston mandrel 8 and a piston handle 7, one end of the piston mandrel 8 is connected with the piston head 4, the other end of the piston mandrel 7 is connected with the piston handle 7, the piston handle 7 is arranged in a hexagonal shape, an operator can conveniently hold and pull the piston, the top of the piston handle is designed to be smooth, the stress area is increased, the piston can be pressed more easily, and the palm of the operator can be protected.

As shown in FIG. 5, when the experimental sample is not easily oxidized and the substance to be tested is a non-volatile substance (such as total migration), the piston can be removed, and a glass cover is added on the top of the cavity, so that the test cell can be used as a migration test cell which is wider in daily use

In summary, compared with the prior art, the piston type migration testing cell provided by the embodiment has the following technical advantages:

the utility model discloses innovated design and structure on the basis of migration pond legend in GB 5009.156-2016 standard, can reach the requirement of test in the GB 5009.156-2016 standard completely.

The migration pool is simple in design and easy and convenient to operate, can be assembled without using additional tools, is uniform in stress of the clamping device, guarantees the whole tightness, and achieves the effect of protecting the cavity and the sample.

The migration pool adopts the split design of the base, the hoop, the cavity and the piston, is convenient to clean and store, can be selectively replaced when a certain part is damaged, and prolongs the service life.

The cavity is marked with scale marks, so that the solution can be quickly and accurately injected into the cavity. The test area S of the base is fixed, and the S/V ratio can be changed by changing the volume of the solution in the cavity, so that the application range of the migration pool is wider. The cavity body of the transparent glass can monitor whether the air in the cavity body is completely removed at any time, and can observe the experiment phenomenon of the simulation liquid and the sample.

The surface of the piston head is frosted, so that the airtightness in the cavity is ensured. The bottom of the piston head is chamfered, so that the piston is more convenient to move and assemble. The piston handle is arranged in a hexagonal shape, so that an operator can conveniently hold and pull the piston, the top of the piston is designed to be smooth, the stress area is increased, the piston can be pressed more easily, and the palm of the operator can be protected.

The utility model provides a sample by the oxidation and the volatile matter loss scheduling problem that awaits measuring of volatility, greatly increased the accuracy of this type of sample experiment.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A piston type migration test cell is characterized by comprising a base, a cavity and a piston; the bottom of the cavity is arranged on the base; the piston is assembled in the cavity to move up and down in the cavity; the piston includes a piston head with a vent hole disposed therein.

2. The piston-type migration test cell of claim 1, wherein said chamber is secured between the bottom and the base by a clamp.

3. The piston-type migration test cell of claim 2, wherein a gasket is attached to an inner wall of said collar.

4. The piston-type migration test cell according to claim 2, wherein a bottom of said chamber extends outwardly with an annular groove for receiving a seal ring.

5. The piston-type migration test cell according to claim 2, wherein the bottom edge of said chamber and the edge of said base are both beveled.

6. The piston-type migration test cell according to claim 1, wherein said chamber is transparent and is provided with graduations.

7. The piston-type migration test cell of claim 1, wherein said piston head surface is frosted.

8. The piston-type migration test cell of claim 1 or 7, wherein said piston head bottom chamfer design.

9. The piston-type migration test cell of claim 1, wherein said piston further comprises a piston mandrel and a piston handle; one end of the piston mandrel is connected with the piston head, and the other end of the piston mandrel is connected with the piston handle.

10. The piston-type migration test cell of claim 9, wherein said piston handle is configured in a hexagonal shape with a smooth top design.

Images