Liquid volatilization prevention device for rheometer test

Abstract

The utility model discloses a liquid volatilization prevention device for rheometer testing, and belongs to the technical field of rheometer testing. A rheometer comprises a rotor, a liquid tray and a rotor support; the rotor rotates under power drive, the power drive is installed on a rotor support, the rotor support can ascend and descend so as to drive the rotor to press or be away from a liquid tray located on an operation table, and the device comprises an outer cover body, an inner cover body and an elastic cover body. The inner cover body is in threaded connection with the outer cover body, and the length of the inner cover body screwed into the outer cover body is adjustable; the elastic cover body is detachably installed at the end, screwed into the outer cover body, of the inner cover body. The inner cover body is provided with a through hole allowing the rotor to vertically lift; the side wall of the inner cover body is provided with a cavity, and a first connecting pipe and a second connecting pipe which are communicated with the cavity; the cavity is used for containing cooling liquid or heat preservation liquid. When the rotor presses the liquid tray, the power drive can abut against the end, away from the elastic cover body, of the inner cover body. Volatilization of the to-be-tested sample can be reduced, and the sample can be conveniently fed and discharged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rheometer test, specifically relates to a kind of for the liquid volatilization device of rheometer test. BACKGROUND

[0002] In the fluid rheology measurement process, solvent directly contacts sample liquid seal is commonly used, which can effectively isolate the sample from the external environment. However, for some samples containing volatile solvents, even if an inert and incompatible solvent is used for liquid sealing, it cannot achieve good results in preventing solvent evaporation. The volume change of the sample caused by the evaporation of the sample solvent further affects the reliability of the measurement results. Furthermore, using a solvent to directly contact the sample for liquid sealing introduces a new liquid sealing material, which is not conducive to excluding the influencing factors of the final measurement results.

[0003] The non-contact sample solvent volatilization prevention device avoids introducing new materials that directly contact the sample, and also does not have direct mechanical contact with other moving parts, which does not interfere with the force measurement in rheological measurement and does not affect the oscillation experiment. In the prior art, a solvent trap is used to isolate the sample placement platform, which prevents sample evaporation and contamination. However, the assembly is integrated, which is complex, inconvenient to disassemble, and difficult to load the sample. UTILITARY MODEL

[0004] The utility model provides a kind of liquid volatilization device for rheometer test for the deficiency in the prior art, which can reduce the volatilization of the sample to be tested and facilitate sample loading and unloading.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A liquid volatilization device for rheometer test, the rheometer includes a rotor, a liquid tray and a rotor support. The rotor rotates under the drive of a power source, and the power source is installed on the rotor support. The rotor support can be lifted to press or move away from the liquid tray on the operation table. The liquid volatilization device includes an outer cover, an inner cover and an elastic cover. The inner cover is threadedly connected to the outer cover, and the length of the inner cover screwed into the outer cover is adjustable. The elastic cover is detachably installed at the end of the inner cover screwed into the outer cover. The inner cover has a through hole allowing the rotor to be lifted vertically. The side wall of the inner cover has a cavity, and a first connecting pipe and a second connecting pipe are connected to the cavity and extend out of the inner cover. The second connecting pipe passes through the outer cover and can move up and down relative to the outer cover. The cavity is used to place cooling liquid or heat preservation liquid. When the rotor presses the liquid tray, the power source can abut against the end of the inner cover away from the elastic cover.

[0007] Optionally, a plurality of uniformly distributed protrusions in the form of hemispheres are arranged in the cavity of the inner cover.

[0008] Optionally, the elastic cover comprises a first connecting cylinder, a second connecting cylinder and an elastic cylinder; the first connecting cylinder and the second connecting cylinder are respectively arranged at two ends of the elastic cylinder; and the first connecting cylinder is threadedly connected to the outer side of the inner cover.

[0009] Optionally, at least one sponge body for absorbing the sample to be detected is arranged on the bottom end surface of the inner cover.

[0010] Optionally, a first magnetic body is arranged on the bottom of the inner cover; the sponge body is inserted into the mounting rack; a second magnetic body is arranged on the back of the mounting rack; the first magnetic body and the second magnetic body are attracted to each other; and the mounting rack is in the form of a grid or a mesh.

[0011] Optionally, a first anti-skid pad is arranged on the bottom of the outer cover, and a second anti-skid pad is arranged on the bottom of the elastic cover; and the first anti-skid pad and the second anti-skid pad are both made of rubber.

[0012] Optionally, the second connecting pipe comprises an L-shaped pipe and a hose; one end of the L-shaped pipe is inserted into the inner cover, and the other end is slidably connected to the outer cover; and the hose is connected to the end of the L-shaped pipe extending out of the outer cover.

[0013] Optionally, a pressing elastic ring is further arranged on the end of the inner cover away from the elastic cover; and the pressing elastic ring is made of rubber or silica gel.

[0014] The present application has the following beneficial effects:

[0015] (1) The depth of the inner cover can be changed, and the elastic cover is arranged at the bottom, so that when the inner cover is pressed by the power, the top of the inner cover can be blocked by the surface driven by the power, and the liquid tray cover can be arranged in the inner cover, thereby reducing the volatilization space of the sample to be detected; in addition, the depth of the inner cover can be changed, and the elastic cover is detachably connected to the inner cover, so that different heights of the elastic cover can be set according to different rheometers, or the elastic cover can be removed, thereby improving the adaptability; the cooling liquid or heat preservation liquid is introduced into the inner cover, so as to delay the volatilization of the sample to be detected and ensure the environmental temperature required for detecting the sample to be detected; and the overall structure of the present application is simple and convenient to use.

[0016] (2) The rotor support is lifted to be away from the liquid tray, and the outer cover is moved upward, so that the sample can be taken and placed; in addition, the rotor is lifted to be separated from the inner cover, so that the inner cover is separated from the rotor, thereby facilitating the disassembly and taking and placing of the sample.

[0017] (3) The elastic cover body of the present application comprises a first connecting cylinder, a second connecting cylinder and an elastic cylinder; the first connecting cylinder and the second connecting cylinder are respectively located at two ends of the elastic cylinder, the first connecting cylinder is threadedly connected to the outside of the inner cover body, and the bottom end face of the inner cover body is provided with at least one sponge body for absorbing the sample to be detected, and the sponge body can further delay the volatilization of the sample. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the present application;

[0019] Figure 2 is the structure schematic diagram of the elastic cover body of the present application;

[0020] Figure 3 is the installation position structure schematic diagram of the sponge body of the present application;

[0021] Figure 4 is Figure 3 is the structure enlarged schematic diagram of the partial A.

[0022] In the figure, 100 is a rotor, 200 is a liquid tray, 300 is a power drive, 400 is a rotor support, 500 is an operation table, 1 is an outer cover body, 2 is an inner cover body, 21 is a first connecting pipe, 22 is a second connecting pipe, 221 is an L-shaped pipe, 222 is a hose, 3 is an elastic cover body, 31 is a first connecting cylinder, 32 is a second connecting cylinder, 33 is an elastic cylinder, 4 is a sponge body, 41 is a first magnetic body, 42 is a second magnetic body, 43 is a mounting frame, and 5 is a pressing elastic ring. DETAILED DESCRIPTION

[0023] The present application will be described in detail below with reference to the drawings.

[0024] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back" and the like cited in the present application are only for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the scope of the present application. The terms "include" and any variations of his in the present application specification and claims are intended to cover non-exclusive inclusion.

[0025] For example, Figure 1 and Figure 2As shown, a liquid evaporation prevention device for rheometer test is provided, which comprises an outer cover 1, an inner cover 2 and an elastic cover 3. The rheometer of the application comprises a rotor 100, a liquid tray 200 and a rotor support 400. The rotor 100 rotates under the drive of a power drive 300, the power drive 300 is installed on the rotor support 400, the power drive 300 is usually a motor, and the rotor support 400 can be lifted to press or move away from the liquid tray 200 located on the operation table 500.

[0026] The inner cover 2 is threadedly connected to the outer cover 1, and the length of the inner cover 2 screwed into the outer cover 1 is adjustable, that is, the screwing depth of the inner cover 2 is changed by forward rotation or reverse rotation; the elastic cover 3 is detachably installed at the end of the inner cover 2 screwed into the outer cover 1; the inner cover 2 has a through hole allowing the rotor 100 to vertically lift, that is, the inner cover 2 is a tubular structure; the side wall of the inner cover 2 has a cavity; the inner cavity is communicated with a first connecting pipe 21 and a second connecting pipe 22; the cavity is used to contain cooling liquid or heat preservation liquid, and the cooling liquid is cooling water and the heat preservation liquid is heating steam as an optional cooling liquid; one of the first connecting pipe 21 and the second connecting pipe 22 is used for the inlet of the cooling liquid or the heat preservation liquid, and the other is used for the outlet of the cooling liquid or the heat preservation liquid, and the liquid in the cavity can keep flowing state through the first connecting pipe 21 and the second connecting pipe 22; the second connecting pipe 22 penetrates the outer cover 1 and can move up and down relative to the outer cover 1; when the rotor 100 presses the liquid tray 200, the surface of the power drive 300 can abut against the end of the inner cover 2 away from the elastic cover 3, that is, the power drive 300 presses the inner cover 2, so as to tightly press the inner cover 2 and the outer cover 1 on the operation table 500 or the operation plane of the rheometer, avoiding the gap between the bottom of the outer cover 1 and the operation table 500; the free end of the elastic cover 3 presses on the operation table 500 and the operation plane, and covers the liquid tray 200 on which the sample to be detected is placed.

[0027] The screwing depth of the inner cover 2 is variable, and the elastic cover 3 is arranged at the bottom, so that when the power drive 300 presses the inner cover 2, the top of the inner cover 2 can be blocked by the surface of the power drive 300 and the liquid tray 200 can be covered inside; in addition, the screwing depth of the inner cover 2 is variable, and the elastic cover 3 is detachably connected to the inner cover 2, so that different heights of the elastic cover 3 can be set according to different rheometers, or the elastic cover 3 can be removed, so as to improve the adaptability; the cooling liquid or the heat preservation liquid is introduced into the inner cover 2, which can delay the evaporation of the sample to be detected and ensure the required environmental temperature for the detection of the sample to be detected; the whole structure of the application is simple and convenient to use.

[0028] The rotor support 400 is lifted to move away from the liquid tray 200, and the outer cover 1 is moved up to realize the taking and placing of the sample; in addition, the rotor 100 is lifted to be separated from the inner cover 2 to realize the separation of the inner cover 2 from the rotor 100.

[0029] In the embodiment, the cavity of the inner cover 2 is provided with a plurality of uniformly distributed protrusions (not shown in the figure), which are semispherical and can change the flow pattern of the liquid in the cavity and increase the contact area between the inner wall of the inner cover 2 and the cooling liquid or the heat preservation liquid, thereby ensuring the ambient temperature in the inner cover 2.

[0030] In the embodiment, the elastic cover 3 includes a first connecting cylinder 31, a second connecting cylinder 32 and an elastic cylinder 33; the first connecting cylinder 31 and the second connecting cylinder 32 are respectively located at two ends of the elastic cylinder 33, the first connecting cylinder 31 is threadedly connected to the outer side of the inner cover 2, and the material of the elastic cylinder 33 can be a soft tube reinforced with a spiral steel wire, and the specific structure can refer to the prior art.

[0031] As shown in Figs. Figure 3 and Figure 4 In some other embodiments, the bottom end surface of the inner cover 2 is provided with at least one sponge 4 capable of absorbing the sample to be detected. The presence of the sponge 4 can further reduce the sample volatilization of the rheometer, and of course the sponge 4 can also absorb some other solvents that can delay sample volatilization, which can be determined according to the experience of experts; the number of sponges 4 can be adjusted as needed.

[0032] More specifically, the bottom of the inner cover 2 is provided with a first magnetic body 41; the sponge 4 is inserted into the mounting bracket 43; the back of the mounting bracket 43 is provided with a second magnetic body 42; the first magnetic body 41 and the second magnetic body 42 attract each other; the mounting bracket 43 is in a grid or mesh shape, and the side edges of the mounting bracket 43 can accommodate the placement and removal of the sponge 4, that is, the sponge 4 can be replaced.

[0033] In the embodiment, the bottom of the outer cover 1 is provided with a first anti-skid pad (not shown in the figure), and the bottom of the second connecting cylinder 32 is provided with a second anti-skid pad (not shown in the figure); both the first anti-skid pad and the second anti-skid pad are made of rubber, and both are installed by adhesion.

[0034] In the embodiment, the second connecting pipe 22 includes an L-shaped pipe 221 and a soft tube 222; one end of the L-shaped pipe 221 is inserted into the inner cover 2, and the other end is slidably connected to the outer cover 1; the soft tube 222 is connected to the end of the L-shaped pipe 221 extending out of the outer cover 1, and the arrangement of the soft tube 222 can facilitate the connection of the second connecting pipe 22 with the cooling liquid or the heat preservation liquid outside.

[0035] In some other embodiments, the liquid volatilization prevention device further includes a pressing elastic ring 5, which is installed at the end of the inner cover 2 away from the elastic cover 3, and is made of rubber or silicone; the arrangement of the pressing elastic ring 5 can ensure the sealing connection between the power drive 300 and the inner cover 2.

[0036] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar components are referred to with the same or similar reference numerals throughout the specification.

[0037] The preferred embodiments of the present application have been described in detail, but the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall be within the protection scope of the present application. It should be noted that some improvements and refinements made by those skilled in the art without departing from the principles of the present application shall be considered within the protection scope of the present application.

Claims

1. A liquid evaporation prevention device for rheometer testing, the rheometer comprising a rotor (100), a liquid tray (200), and a rotor support (400); the rotor (100) rotates under a power drive (300), the power drive (300) being mounted on the rotor support (400), the rotor support (400) being liftable to move the rotor (100) against or away from the liquid tray (200) located on an operating table (500), characterized in that, The device includes an outer cover (1), an inner cover (2), and an elastic cover (3); the inner cover (2) is threaded onto the outer cover (1), and its length screwed into the outer cover (1) is adjustable; the elastic cover (3) is detachably installed at the end of the inner cover (2) screwed into the outer cover (1); the inner cover (2) has a through hole that allows the rotor (100) to move vertically up and down; the side wall of the inner cover (2) has a cavity, and a first connecting pipe (21) and a second connecting pipe (22) that communicate with the cavity and extend out of the inner cover (2); the second connecting pipe (22) passes through the outer cover (1) and can move up and down relative to the outer cover (1); the cavity is used to hold coolant or heat-insulating liquid; when the rotor (100) presses the liquid tray (200), the power drive (300) can abut against the end of the inner cover (2) away from the elastic cover (3).

2. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, The cavity of the inner cover (2) is provided with a plurality of evenly distributed protrusions, which are hemispherical.

3. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, The elastic cover (3) includes a first connecting cylinder (31), a second connecting cylinder (32) and an elastic cylinder (33); the first connecting cylinder (31) and the second connecting cylinder (32) are located at the two ends of the elastic cylinder (33), and the first connecting cylinder (31) is threaded to the outside of the inner cover (2).

4. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, The bottom end face of the inner cover (2) is provided with at least one sponge (4) filled with the sample to be tested.

5. The anti-liquid evaporation device for rheometer testing according to claim 4, characterized in that, The bottom of the inner cover (2) is provided with a first magnetic accumulator (41); the sponge (4) is inserted into the mounting bracket (43); the back of the mounting bracket (43) is provided with a second magnetic accumulator (42); the first magnetic accumulator (41) and the second magnetic accumulator (42) attract each other, and the mounting bracket (43) is grid-shaped or mesh-shaped.

6. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, The bottom of the outer cover (1) is provided with a first anti-slip pad, and the bottom of the elastic cover (3) is provided with a second anti-slip pad. Both the first anti-slip pad and the second anti-slip pad are made of rubber.

7. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, The second connecting pipe (22) includes an L-shaped pipe (221) and a flexible hose (222); one end of the L-shaped pipe (221) is inserted into the inner cover (2), and the other end is slidably connected to the outer cover (1); the flexible hose (222) is connected to the end of the L-shaped pipe (221) that extends out of the outer cover (1).

8. The anti-liquid evaporation device for rheometer testing according to claim 1, characterized in that, It also includes a pressing elastic ring (5), which is installed on the end of the inner cover (2) away from the elastic cover (3), and the pressing elastic ring (5) is made of rubber or silicone.

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