Sample mounting device for transmission electron microscope

Abstract

The utility model discloses a transmission electron microscope sample mounting device, which comprises a cup body, a handle, a fastener, a fastening knob, a top cover and a pressure relief assembly, fixing pipes are uniformly distributed on two sides of the handle, the handle is distributed at the top of the cup body, the fastener comprises a push rod inserted in the fixing pipes and a plurality of fine needles distributed at one end of the push rod, and the fine needles are arranged on the top of the cup body. The fastening knob is in threaded connection to the fixing pipe, the bottom end of the fastening knob is connected with the outer side of the push rod in an abutting mode, and the top cover is in threaded connection to the top of the cup body; the pressure relief assembly comprises a pressure relief pipe arranged at the front end of the cup body, a plurality of pressure relief holes formed in the outer side of the pressure relief pipe, a rotating cover in threaded connection with the pressure relief pipe, a spring arranged in the rotating cover, a fixing plate arranged at the front end of the spring and a piston arranged at the front end of the fixing plate. According to the sample mounting device, the fastener and the fastening knob are arranged, under the condition that the use of the sample mounting device is not influenced, an ice column and a sample can be firmly fixed, water does not need to be added for freezing, time and labor are saved, and meanwhile pressure relief is facilitated by arranging the pressure relief assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission electron microscope detection technical field, concretely for a kind of for transmission electron microscope sample mounting device. BACKGROUND

[0002] Transmission electron microscope is called transmission electron microscope, it is a kind of high resolution, high magnification microscope, when using transmission electron microscope, first step needs to prepare transmission electron microscope sample, in order to obtain certain thickness sample, need to use sample mounting device to grind, by searching, the patent with the announcement number CN214622394U discloses a sample mounting device for transmission electron microscope, its content records "…… ice column 3 is placed in the recess structure 21 in the bottom of cup 2, appropriate amount of water is added in the gap between ice column 3 and recess structure 21…… liquid nitrogen is cooled to recess structure 21, ice column 3 and water freeze, ice column 3 fixed with sample 4 is completely fixed in recess structure 21……", as the record content can know, the application needs to add water in recess structure first, then freeze with ice column, this process is time-consuming and laborious, and ice column is easy to generate heat and melt off when grinding, there is certain deficiency, for this, we propose a kind of for transmission electron microscope sample mounting device. UTILITY MODEL CONTENT

[0003] Therefore, the utility model aims at providing a kind of for transmission electron microscope sample mounting device, by setting fastener and fastening knob, without affecting the use of sample mounting device, ice column and sample can be firmly fixed, and water is not needed to freeze, save time and effort, simultaneously, by setting pressure relief component, it is convenient to release pressure.

[0004] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0005] A kind of for transmission electron microscope sample mounting device, comprising:

[0006] Cup, both sides are equipped with fixed pipe;

[0007] Handle, is arranged at the top of the cup;

[0008] Fastener, including push rod and several thin needles being arranged at one end of the push rod and being inserted in the fixed pipe;

[0009] Fastening knob is screw-connected on the fixed pipe, the bottom end of the fastening knob and the outside of push rod abutment connection;

[0010] Top cover is screw-connected on the top of the cup;

[0011] The pressure relief assembly comprises a pressure relief pipe arranged at the front end of the cup body, a plurality of pressure relief holes opened at the outer side of the pressure relief pipe, a rotating cover threadedly connected with the pressure relief pipe, a spring arranged in the rotating cover, a fixed plate arranged at the front end of the spring, and a piston arranged at the front end of the fixed plate.

[0012] As a preferred scheme of the transmission electron microscope sample mounting device, the bottom of the cup body is provided with a groove for mounting ice columns and samples.

[0013] As a preferred scheme of the transmission electron microscope sample mounting device, the fastener and the fastening knob are both provided with two, and the two fastening knobs are both T-shaped studs.

[0014] As a preferred scheme of the transmission electron microscope sample mounting device, the push rod is T-shaped, and the push rod extends into the groove.

[0015] As a preferred scheme of the transmission electron microscope sample mounting device, the cup body is further provided with thermal insulation cotton, and the thermal insulation cotton is bonded to the outer side of the cup body.

[0016] As a preferred scheme of the transmission electron microscope sample mounting device, the top end of the top cover is provided with a protrusion, and the cross section of the protrusion is hexagonal.

[0017] As a preferred scheme of the transmission electron microscope sample mounting device, the top cover is further provided with an injection pipe, the injection pipe is arranged at the top of the top cover, and a sealing cover is threadedly connected with the injection pipe.

[0018] As a preferred scheme of the transmission electron microscope sample mounting device, the rear side of the fixed plate is provided with a limiting rod, and the limiting rod penetrates through the rotating cover.

[0019] Compared with the prior art, the utility model has the beneficial effects that through be provided with fastener and fastening knob, can firmly fix ice column and sample under the condition that does not influence the use of sample inlaying device, and need not add water and freeze, save time and labour, simultaneously through be provided with pressure relief subassembly, convenient pressure relief, when using, the user can directly with the ice column of sample aiming at the recess of cup body bottom, and intercalate, can push the push rod of fastener after intercalation, make fine needle insert into ice column, rotate fastening knob after insertion, until fastening knob stop the push rod, can pass through fastener and fastening knob firmly fix ice column and sample in recess, in order to grind, and need not add water and freeze, save time and labour, simultaneously because liquid nitrogen heated volatilization's nitrogen gas is more when cup body's air pressure is bigger, will push the piston and fixed plate of pressure relief subassembly and move outward, until piston moves to pressure relief hole place, nitrogen gas in cup body can discharge through pressure relief hole at this time, avoided internal pressure too high, when spring damage, can directly rotate rotary cover and separate from pressure relief pipe, directly replace new spring after falling, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the utility model will be described in detail below with the combination of drawings and detailed embodiment, obviously, the drawings in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings. Wherein:

[0021] Figure 1 It is a perspective view of the utility model for a sample inlaying device for transmission electron microscope;

[0022] Figure 2 It is a sample inlaying device for transmission electron microscope; Figure 1 It is a perspective view of the cup body from another angle;

[0023] Figure 3 It is a sample inlaying device for transmission electron microscope; Figure 1 It is a perspective view of the cup body from another angle;

[0024] Figure 4 It is a sample inlaying device for transmission electron microscope; Figure 1 It is a perspective view of the fastener;

[0025] Figure 5 It is a sample inlaying device for transmission electron microscope; Figure 1 It is a perspective view of the top cover;

[0026] Figure 6 It is a sample inlaying device for transmission electron microscope; Figure 1 It is a perspective view of the pressure relief subassembly.

[0027] Fig.:

[0028] 100, cup body; 101, fixed tube; 102, groove;

[0029] 200, handle;

[0030] 300, fastener; 301, push rod; 302, fine needle;

[0031] 400, fastening knob;

[0032] 500, heat preservation cotton;

[0033] 600, top cover; 601, protrusion;

[0034] 700, injection tube; 701, sealing cover;

[0035] 800, pressure relief assembly; 801, pressure relief tube; 802, pressure relief hole; 803, rotating cover; 804, spring; 805, fixed plate; 806, piston; 807, limiting rod. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the content of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0038] Secondly, the present application is described in detail in combination with the schematic diagram, when the embodiments of the present application are described in detail, in order to facilitate the description, the cross-sectional view of the device structure will be partially enlarged without half scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present application here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0039] In order to make the purposes, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0040] The present application provides a kind of for transmission electron microscope sample mounting device, by setting fastener and fastening knob, without affecting sample mounting device use, ice column and sample can be firmly fixed, and need not add water ice, save time and effort, simultaneously by setting pressure relief assembly, it is convenient to release pressure.

[0041] Figures 1-6It shows that the utility model discloses a kind of overall structure schematic diagram for transmission electron microscope sample inlay one implementation mode, please refer to Figures 1-6 The main part of the transmission electron microscope sample inlay of the embodiment includes: cup body 100, handle 200, fastener 300, fastening knob 400, thermal insulation cotton 500, top cover 600, injection pipe 700 and pressure relief assembly 800.

[0042] The cup body 100 is used to store liquid nitrogen for cooling. Specifically, the cup body 100 is provided with a fixing tube 101 on both sides, and a recess 102 for inlaying ice columns and samples is formed in the bottom of the cup body 100. In use, the ice column with the sample can be aligned with the recess 102 in the bottom of the cup body 100 and inserted to inlay the sample, and liquid nitrogen can be poured or injected into the cup body 100 to prevent the ice column from melting.

[0043] The handle 200 is used to move the cup body 100. Specifically, the handle 200 is arranged on the top of the cup body 100. In use, the handle 200 can be gripped to move the cup body 100 for grinding and to prevent frostbite.

[0044] The fastener 300 can fix the ice column. Specifically, the fastener 300 includes a push rod 301 inserted into the fixing tube 101 and a plurality of fine needles 302 arranged on one end of the push rod 301. The push rod 301 is T-shaped, and the push rod 301 extends into the recess 102. In use, the push rod 301 of the fastener 300 can be pushed to make the fine needles 302 inserted into the ice column to fix the ice column.

[0045] The fastening knob 400 can fix the fastener 300. Specifically, the fastening knob 400 is threadedly connected to the fixing tube 101, and the bottom end of the fastening knob 400 is in abutting connection with the outer side of the push rod 301. In use, the fastening knob 400 can be rotated until it abuts against the push rod 301 to fix the fastener 300, so that the ice column and the sample can be firmly fixed in the recess 102 by the fastener 300 and the fastening knob 400.

[0046] It should be noted that two fasteners 300 and two fastening knobs 400 are provided, and the two fastening knobs 400 are T-shaped studs. In use, the two fasteners 300 and the two fastening knobs 400 can firmly fix the ice column and the sample in the recess 102 for grinding.

[0047] To prevent the temperature of the liquid nitrogen from rapidly dropping, the thermal insulation cotton 500 is provided. Specifically, the thermal insulation cotton 500 is bonded to the outer side of the cup body 100. In use, the thermal insulation cotton 500 can improve the heat preservation effect of the cup body 100 for cooling.

[0048] The top cover 600 is used for sealing the cup body 100. Specifically, the top cover 600 is threadedly connected to the top of the cup body 100. The top end of the top cover 600 is provided with a protrusion 601. The protrusion 601 has a hexagonal cross section. In use, the protrusion 601 can be pinched, and then the top cover 600 can be rotated through the protrusion 601, so as to open or close the cup body 100, for use.

[0049] Specifically, the injection pipe 700 is arranged at the top of the top cover 600. The injection pipe 700 is threadedly connected with a sealing cover 701. In use, the sealing cover 701 can be rotated to be separated from the injection pipe 700. After being separated, liquid nitrogen can be injected into the cup body 100 through the injection pipe 700, for use.

[0050] The liquid nitrogen in the cup body 100 can volatilize nitrogen gas when heated. Too much nitrogen gas can cause the air pressure in the cup body 100 to be too large. To solve this problem, the pressure relief assembly 800 is provided. Specifically, the pressure relief assembly 800 includes a pressure relief pipe 801 arranged at the front end of the cup body 100, a plurality of pressure relief holes 802 opened at the outer side of the pressure relief pipe 801, a rotating cover 803 threadedly connected with the pressure relief pipe 801, a spring 804 arranged in the rotating cover 803, a fixed plate 805 arranged at the front end of the spring 804, and a piston 806 arranged at the front end of the fixed plate 805. The rear side of the fixed plate 805 is arranged with a limiting rod 807. The limiting rod 807 penetrates through the rotating cover 803. When too much nitrogen gas volatilized due to the heating of the liquid nitrogen causes the air pressure in the cup body 100 to be too large, the piston 806 and the fixed plate 805 of the pressure relief assembly 800 are pushed to move outward until the piston 806 moves to the pressure relief hole 802. At this time, the nitrogen gas in the cup body 100 can be discharged through the pressure relief hole 802, so as to avoid the internal pressure being too high. When the spring 804 is damaged, the rotating cover 803 can be directly rotated to be separated from the pressure relief pipe 801. After being separated, a new spring 804 can be directly replaced, for use. The piston 806 and the fixed plate 805 move to drive the limiting rod 807. The cooperation between the limiting rod 807 and the rotating cover 803 can ensure that the piston 806 and the fixed plate 805 move linearly.

[0051] In combination Figures 1-6In use, the user can directly aim the ice column with the sample at the groove 102 at the bottom of the cup 100, and then insert it, and after the insertion, the user can push the push rod 301 of the fastener 300, so that the thin needle 302 is inserted into the ice column, and after the insertion, the user can rotate the fastening knob 400 until the fastening knob 400 abuts against the push rod 301, so that the ice column and the sample are firmly fixed in the groove 102 by the fastener 300 and the fastening knob 400, and then the ice column and the sample can be ground without the need of adding water to freeze, which saves time and effort, and when the pressure in the cup 100 is relatively high due to the volatilization of the nitrogen gas in the liquid nitrogen, the piston 806 and the fixed plate 805 of the pressure relief assembly 800 are pushed to move outward until the piston 806 moves to the pressure relief hole 802, and at this time, the nitrogen gas in the cup 100 can be discharged through the pressure relief hole 802, so that the internal pressure is prevented from being too high, and when the spring 804 is damaged, the rotating cover 803 can be directly rotated to be separated from the pressure relief pipe 801, and after the separation, the new spring 804 can be directly replaced for use.

[0052] Although the present application has been described with reference to the embodiments above, various improvements can be made and equivalent substitutions can be made to the components without departing from the scope of the present application. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in the present application can be combined in any manner, and the combinations are not exhaustively described in the present specification only for the purpose of saving space and resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A holder for a transmission electron microscope, characterized in that The utility model relates to a sample freezing and embedding device, including: The cup body (100) both sides are equipped with fixed pipe (101); Handle (200) is arranged in the top of cup body (100); Fastener (300) includes push rod (301) and a plurality of thin needles (302) arranged in the one end of push rod (301) threaded in fixed pipe (101); Fastening knob (400) is screwed on fixed pipe (101), and the bottom end of fastening knob (400) is connected with the outside of push rod (301); Top cover (600) is screwed on the top of cup body (100); Pressure relief assembly (800) includes pressure relief pipe (801) arranged in the front end of cup body (100), a plurality of pressure relief holes (802) opened in the outside of pressure relief pipe (801), rotating cover (803) screwed with pressure relief pipe (801), spring (804) arranged in rotating cover (803), fixed plate (805) arranged in the front end of spring (804) and piston (806) arranged in the front end of fixed plate (805).

2. A specimen holder for a transmission electron microscope according to claim 1, wherein, The bottom of cup body (100) is provided with recess (102) for embedding ice column and sample.

3. A specimen holder for a transmission electron microscope according to claim 2, wherein, Fastener (300) and fastening knob (400) are provided with two, and two fastening knobs (400) are T-shaped studs.

4. A specimen holder for a transmission electron microscope according to claim 3, wherein The push rod (301) is T-shaped, and the push rod (301) is threaded into the recess (102).

5. A specimen holder for a transmission electron microscope according to claim 4, wherein It further includes thermal insulation cotton (500), and the thermal insulation cotton (500) is bonded to the outside of cup body (100).

6. A specimen holder for a transmission electron microscope according to claim 5, wherein, The top end of top cover (600) is provided with lug (601), and the cross section of lug (601) is hexagonal.

7. A specimen holder for a transmission electron microscope according to claim 6, wherein It further includes injection pipe (700), and the injection pipe (700) is arranged on the top of top cover (600), and the injection pipe (700) is screwed with sealing cover (701).

8. A specimen holder for a transmission electron microscope according to claim 7, wherein, The rear side of fixed plate (805) is provided with limit rod (807), and limit rod (807) penetrates rotating cover (803).

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