BET sample pretreatment device

Abstract

The utility model belongs to the technical field of physical adsorption sample pretreatment, and particularly relates to a BET sample pretreatment device which comprises a constant-temperature test tube heater, a supporting mechanism and a test tube, the supporting mechanism is arranged on the rear side of the supporting mechanism and comprises a support, a lead screw, a movable block, a supporting plate and a test tube hole, the lead screw is arranged on the supporting mechanism, and the movable block is arranged on the supporting plate. A movable block is arranged on the lead screw, a supporting plate is arranged at the front end of the movable block, and a test tube hole is formed in the supporting plate; the test tube is arranged in the test tube hole, the test tube is placed in the constant-temperature test tube heater for pretreatment, and the test tube is lifted by the support plate after being heated, so that a worker is prevented from being scalded when taking the test tube by hand.

Description

Technical Field

[0001] The utility model relates to the technical field of physical adsorption sample pretreatment, in particular to a BET sample pretreatment device. Background Art

[0002] The BET specific surface area test method is widely used in the research of particle surface adsorption performance and data processing of related testing instruments. The BET formula is the most widely used method in the industry and has the most reliable test results. Almost all relevant standards at home and abroad are established based on the BET equation. Before starting the BET specific surface area test, the sample must first be pretreated, mainly by heating and degassing. The pretreatment temperature should not only remove moisture from the sample, but also be careful not to damage the sample.

[0003] The sample is usually placed in a test tube, and the test tube is heated. After heating, the test tube is very hot and cannot be manually taken out of the heater. Therefore, the present application proposes a BET sample pretreatment device. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing BET sample pretreatment devices, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a BET sample pretreatment device, which puts the test tube into a constant temperature test tube heater for pretreatment, and uses a support plate to drive the test tube to rise after heating, so as to avoid burns to the staff when holding the test tube with their hands.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A BET sample pretreatment device, comprising:

[0009] Constant temperature test tube heater;

[0010] A support mechanism is arranged at the rear side of the support mechanism, the support mechanism comprises a bracket, a screw rod, a movable block, a support plate and a test tube hole, the upper side is provided with a screw rod, the movable block is arranged on the screw rod, the front end of the movable block is provided with a support plate, and the test tube hole is provided on the support plate;

[0011] A test tube is arranged in the test tube hole.

[0012] As a preferred solution of a BET sample pretreatment device described in the utility model, wherein: movable grooves are opened on both sides of the left and right sides of the rear end of the support plate, an axial hole is penetrated through the movable groove, a pressure rod is arranged on the side of the bracket, a closing piece is connected to the axial hole, the closing piece includes a cover plate, an avoidance groove, a hinge seat and a hinge shaft, an avoidance groove corresponding to the movable block is opened at the center of the lower end of the cover plate, a hinge seat connected to the movable groove is arranged on the side of the cover plate, and a hinge shaft connected to the axial hole is arranged on the hinge seat.

[0013] As a preferred solution of the BET sample pretreatment device described in the utility model, wherein: a torsion spring is arranged at the outer end of the hinge shaft, one end of the torsion spring is fixed on the hinge shaft, and the other end of the torsion spring is fixed on the support plate.

[0014] As a preferred solution of the BET sample pretreatment device described in the utility model, wherein: when the torsion spring is in a natural state, the cover plate horizontally covers the top of the test tube.

[0015] As a preferred solution of the BET sample pretreatment device described in the utility model, wherein: a rotating wheel is arranged at the top end of the screw rod, and a rubber sleeve is arranged outside the rotating wheel.

[0016] As a preferred solution of the BET sample pretreatment device described in the utility model, wherein: the rear end of the movable block is in contact with the inner side of the bracket.

[0017] As a preferred solution of the BET sample pretreatment device described in the utility model, wherein: when the cover plate is in a horizontal state, the cover plate is located below the pressure rod.

[0018] Compared with the prior art: the utility model adopts a supporting mechanism for lifting, and drives the support plate to lift and lower by a screw rod. A test tube hole is opened on the support plate, and the sample test tube is placed in the test tube hole. The test tube is driven to lift and lower by the support plate, and the test tube is placed in a constant temperature test tube heater for pretreatment. After heating, the test tube is driven to lift by the support plate to avoid burns to the staff when taking the test tube with their hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

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

[0021] Figure 2This is a schematic diagram of the support mechanism structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the closure member of the utility model.

[0023] In the figure: 100 constant temperature test tube heater, 200 supporting mechanism, 210 bracket, 220 screw rod, 221 rotating wheel, 230 movable block, 240 supporting plate, 250 test tube hole, 260 movable groove, 270 shaft hole, 280 pressure rod, 300 test tube, 400 closing part, 410 cover plate, 420 avoidance groove, 430 hinge seat, 440 hinge shaft, 450 torsion spring. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The utility model provides a BET sample pretreatment device, which puts the test tube into the constant temperature test tube heater for pretreatment. After heating, the test tube is lifted by the support plate to avoid burns when the staff takes the test tube by hand. Figure 1-Figure 3 , including: a constant temperature test tube heater 100, a supporting mechanism 200 and a test tube 300.

[0029] The top of the constant temperature test tube heater 100 is provided with a placement groove for the test tube 300 . The test tube is placed in the placement groove and the constant temperature test tube heater 100 is used to perform heating pretreatment on the test tube.

[0030] The support mechanism 200 is arranged at the rear side of the support mechanism 200, and the support mechanism 200 includes a bracket 210, a screw rod 220, a movable block 230, a support plate 240 and a test tube hole 250, wherein the screw rod 220 is arranged on the support mechanism 210, the movable block 230 is arranged on the screw rod 220, the support plate 240 is arranged at the front end of the movable block 230, and the test tube hole 250 is opened on the support plate 240;

[0031] The rotating screw rod 220 drives the movable block 230 to move up and down, and the movable block 230 drives the supporting plate 240 to move up and down synchronously.

[0032] The test tube 300 is disposed in the test tube hole 250 , and the sample is placed in the test tube 300 for pretreatment.

[0033] Since the top of the test tube 300 is open, dust is easily trapped inside during pretreatment, which affects the quality of the sample. Therefore, movable grooves 260 are provided on both sides of the rear end of the support plate 240. The movable groove 260 is provided with an axial hole 270. A pressure rod 280 is provided on the side of the bracket 210. A closure member 400 is connected to the axial hole 270. The closure member 400 includes a cover plate 410, an avoidance groove 420, a hinge seat 430 and a hinge shaft 440. The avoidance groove 420 corresponding to the movable block 230 is provided at the center of the lower end of the cover plate 410. A hinge seat 430 connected to the movable groove 260 is provided on the side of the cover plate 410. A hinge shaft 440 connected to the axial hole 270 is provided on the hinge seat 430.

[0034] The cover plate 410 rises and falls with the support plate 240. When the support plate 240 rises, the right end of the cover plate 410 first contacts the pressure rod 280, and the pressure rod 280 presses down the right end of the cover plate 410 to make the cover plate 410 open around the hinge shaft 440; when the support plate 240 is lowered, the left end of the cover plate 410 is lowered under the weight to cover the test tube 300 to prevent dust from falling on the top opening of the test tube 300.

[0035] Since the cover 410 needs to be flipped down under weight, it is easy to get stuck due to the hindrance of friction. For this reason, a torsion spring 450 is provided at the outer end of the hinge shaft 440. One end of the torsion spring 450 is fixed on the hinge shaft 440, and the other end of the torsion spring 450 is fixed on the support plate 240. The torsion spring 450 is used to force the cover 410 to flip down, thereby ensuring that the cover 410 works stably.

[0036] Since the cover plate 410 needs to cover the top of the test tube 300 after being lowered, the cover plate 410 horizontally covers the top of the test tube 300 when the torsion spring 450 is in a natural state.

[0037] Since the screw rod 220 needs to be rotated, a rotating wheel 221 is provided at the top of the screw rod 220 to facilitate the rotating operation. A rubber sleeve is provided outside the rotating wheel 221. The screw rod 220 is rotated by the rotating wheel 221 to facilitate operation.

[0038] In order to prevent the movable block 230 from rotating with the screw rod 220 and affecting the lifting movement, the rear end of the movable block 230 is fitted with the inner side of the bracket 210 to prevent the movable block 230 from rotating.

[0039] During specific use, the screw rod 220 is rotated to lift the support plate 240. When the support plate 240 is lifted, the pressure rod 280 presses down the right end of the cover plate 410 to make the cover plate 410 flip open around the hinge shaft 440 to expose the test tube hole 250. The sample is placed in the test tube 300, and the test tube 300 is placed in the test tube hole 250. The screw rod 220 is reversed and the support plate 240 is lowered. During the lowering process, the cover plate 410 is separated from the pressure rod 280, and the torsion spring 450 is used to force the cover plate 410 to flip down to cover the test tube 300 to prevent dust from falling on the top opening of the test tube 300.

[0040] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A BET sample pretreatment device, characterized in that: include: Constant temperature test tube heater (100); A support mechanism (200) is arranged at the rear side of the support mechanism (200), the support mechanism (200) comprising a bracket (210), a screw rod (220), a movable block (230), a support plate (240) and a test tube hole (250), the screw rod (220) being arranged on the support mechanism (250), the movable block (230) being arranged on the screw rod (220), the support plate (240) being arranged at the front end of the movable block (230), and the test tube hole (250) being opened on the support plate (240); A test tube (300) is disposed in the test tube hole (250).

2. A BET sample pretreatment device according to claim 1, characterized in that: The rear end of the support plate (240) is provided with movable grooves (260) on both sides, and the movable groove (260) is provided with an axial hole (270). The side of the bracket (210) is provided with a pressure rod (280), and the axial hole (270) is connected with a closing member (400). The closing member (400) includes a cover plate (410), an avoidance groove (420), a hinge seat (430) and a hinge shaft (440). The center of the lower end of the cover plate (410) is provided with an avoidance groove (420) corresponding to the movable block (230), and the side of the cover plate (410) is provided with a hinge seat (430) connected to the movable groove (260), and the hinge seat (430) is provided with a hinge shaft (440) connected to the axial hole (270).

3. A BET sample pretreatment device according to claim 2, characterized in that: A torsion spring (450) is provided at the outer end of the hinge shaft (440), one end of the torsion spring (450) is fixed on the hinge shaft (440), and the other end of the torsion spring (450) is fixed on the support plate (240).

4. A BET sample pretreatment device according to claim 3, characterized in that: When the torsion spring (450) is in a natural state, the cover plate (410) horizontally covers the top of the test tube (300).

5. A BET sample pretreatment device according to claim 1, characterized in that: A rotating wheel (221) is arranged at the top end of the screw rod (220), and a rubber sleeve is arranged outside the rotating wheel (221).

6. A BET sample pretreatment device according to claim 1, characterized in that: The rear end of the movable block (230) is in contact with the inner side of the bracket (210).

7. A BET sample pretreatment device according to claim 4, characterized in that: When the cover plate (410) is in a horizontal state, the cover plate (410) is located below the pressure rod (280).

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