An automatic sample changing device for gas extraction of solid samples

Abstract

This invention discloses an automatic sample-changing device for solid sample gas extraction, relating to the field of solid sample gas extraction technology. It includes a container body, a sample tray, a rotating motor, a gas outlet pipe, a lifting device, a cover plate, a heating furnace assembly, and a controller. The sample tray is located inside the container body. The output shaft of the rotating motor is fixedly connected to the lower end of the sample tray. The upper end of the sample tray is used to hold multiple solid samples. The container body has a switch and a gas outlet. The lifting device drives the cover plate to move up and down, and the cover plate is detachably fixed to the switch. The heating furnace assembly is fixed relative to the lower end of the cover plate and heats the solid samples. The rotating motor, heating furnace assembly, and lifting device are all electrically connected to the controller. This invention can extract the gas generated by heating solid samples and can automatically replace the next solid sample for the experiment.

Description

Technical Field

[0001] This invention relates to the field of solid sample gas extraction technology, and in particular to an automatic sample changing device for solid sample gas extraction. Background Technology

[0002] In experimental methods for extracting gases from solid samples, the commonly used approach in ultra-high vacuum laboratories is a glass "Christmas tree" with a heating furnace assembly. This method involves wrapping the solid sample in magnetic material and placing it within a sealed glass tree branch. During sample replacement, a magnet is used to attract the sample to the high-temperature furnace beneath the "Christmas tree," where the sample is then heated to extract the gas. However, solid sample gas extraction devices used in ultra-high vacuum laboratories cannot automate sample replacement.

[0003] Therefore, there is an urgent need in the market for a new type of solid sample gas extraction device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic sample-changing device for gas extraction from solid samples, which solves the technical problems existing in the prior art and can automatically change solid samples and extract gas from solids.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention discloses an automatic sample changing device for solid sample gas extraction, comprising a container body, a sample tray, a rotating motor, a gas outlet pipe, a lifting device, a cover plate, a heating furnace assembly, and a controller. The sample tray is located within the container body. The output shaft of the rotating motor is fixedly connected to the lower end of the sample tray. The upper end of the sample tray is used to place multiple solid samples. The container body has a switch port and a gas outlet. The lifting device drives the cover plate to move up and down. The cover plate is detachably fixed to the switch port. The heating furnace assembly is fixed relative to the lower end of the cover plate and heats the solid samples. The rotating motor, the heating furnace assembly, and the lifting device are all electrically connected to the controller.

[0007] Preferably, the lifting device includes a conveyor belt, a lifting motor, a drive roller, and a driven roller. The drive roller and the driven roller are located at both ends of the conveyor belt. The lifting motor is fixedly connected to the drive roller. The cover plate is fixed relative to the conveyor belt. The lifting motor is electrically connected to the controller.

[0008] Preferably, it further includes a fixing block, the first end of which is fixed to the conveyor belt and the second end of which is fixed to the cover plate.

[0009] Preferably, the heating furnace assembly includes a furnace body, a chromium wire, an electrode flange, and a power supply. The lower end of the heating furnace assembly is open. The chromium wire is fixed to the furnace body. The electrode flange is fixed to the cover plate. The chromium wire is connected to the first end of the electrode flange. The second end of the electrode flange is electrically connected to the power supply. The power supply is electrically connected to the controller.

[0010] Preferably, the lower end of the cover plate has a washer, and the upper end of the switch port has multiple protrusions, with the washer and the protrusions positioned directly opposite each other.

[0011] Preferably, the washer is made of silver.

[0012] Preferably, the switch opening is circular, and the plurality of protrusions are distributed circumferentially, wherein the protrusions have a triangular structure.

[0013] Preferably, it further includes a fixing rod, the first end of which is fixed to the lower end of the sample tray, and the second end of which is fixed to the output shaft of the rotating motor.

[0014] The present invention achieves the following technical effects compared to the prior art:

[0015] 1. Solid samples can be replaced by rotating a motor to drive the sample tray.

[0016] 2. The use of silver gaskets and raised parts in combination can effectively improve the sealing effect and prevent gas from leaking out;

[0017] 3. The cover plate is moved up and down by a conveyor belt, eliminating the need for manual operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the automatic sample changing device for solid sample gas extraction in this embodiment;

[0020] In the figure: 1-Container body; 2-Sample tray; 3-Rotating motor; 4-Gas outlet pipe; 5-Lifting motor; 6-Conveyor belt; 7-Cover plate; 8-Washer; 9-Fixing rod; 10-Protrusion; 11-Heating furnace assembly. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide an automatic sample-changing device for gas extraction from solid samples, which solves the technical problems existing in the prior art and can automatically change solid samples and extract gas from solids.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, this embodiment provides an automatic sample changing device for solid sample gas extraction, including a container body 1, a sample tray 2, a rotating motor 3, an outlet pipe 4, a lifting device, a cover plate 7, a heating furnace assembly 11, and a controller. The sample tray 2 is located inside the container body 1 and is a circular structure. The output shaft of the rotating motor 3 is fixedly connected to the lower end of the sample tray 2, driving the sample tray 2 to rotate. The upper end of the sample tray 2 is used to hold multiple solid samples, which are distributed circumferentially around the upper end of the sample tray 2. The container body 1 has a switch port and an outlet. The switch port is located at the upper end of the container body 1, and the outlet is located on the side wall of the container body 1. The lifting device drives the cover plate 7 to move up and down. The cover plate 7 is detachably fixed to the switch port, and its function is to open or close the switch port. The heating furnace assembly 11 is fixed relative to the lower end of the cover plate 7. The heating furnace assembly 11 heats the solid samples and can rise or fall together with the cover plate 7. The rotating motor 3, the heating furnace assembly 11, and the lifting device are all electrically connected to the controller, which controls the start and stop of each device.

[0025] In use, the controller controls the lifting device to lower the cover plate 7, which then lands at the switch opening. At this point, the heating furnace assembly 11 is positioned above the solid sample. The heating furnace assembly 11 is then activated to heat the solid sample. A certain gap exists between the heating furnace assembly 11 and the solid sample, allowing the generated gas to flow out through the gas outlet pipe 4 for collection. After the first solid sample has been heated, the lifting device is raised to lift the heating furnace assembly 11, and then the rotary motor 3 is rotated to move the next solid sample below the heating furnace assembly 11. The heating furnace assembly 11 is then lowered again, and the above actions are repeated.

[0026] Regarding the structure of the lifting device, in this embodiment, the lifting device is a common conveyor belt assembly. Specifically, the lifting device includes a conveyor belt 6, a lifting motor 5, a drive roller, and a driven roller. The drive roller and the driven roller are located at both ends of the conveyor belt 6. The lifting motor 5 is fixedly connected to the drive roller, and the cover plate 7 is fixed relative to the conveyor belt 6. The lifting motor 5 is electrically connected to a controller. The controller controls the forward and reverse rotation of the lifting motor 5, thereby realizing the repeated movement of the conveyor belt 6, which in turn drives the cover plate 7 to move up and down.

[0027] Furthermore, to achieve relative fixation between the cover plate 7 and the conveyor belt 6, this embodiment also includes a fixing block. The first end of the fixing block is fixed to the conveyor belt 6, and the second end of the fixing block is fixed to the cover plate 7. The specific shape of the fixing block can be set according to the relative positional relationship between the conveyor belt 6 and the cover plate 7.

[0028] Regarding the specific structure of the heating furnace assembly 11, in this embodiment, the heating furnace assembly 11 includes a furnace body, a chrome wire, an electrode flange, and a power supply. The furnace body is made of ceramic. The lower end of the heating furnace assembly 11 is open. The chrome wire is fixed to the furnace body, and the electrode flange is fixed to the cover plate 7. The chrome wire is connected to the first end of the electrode flange, and the second end of the electrode flange is electrically connected to the power supply. The power supply is electrically connected to the controller. The operator controls the power supply switch through the controller, thereby achieving the heating effect of the furnace body.

[0029] To improve the sealing effect, in this embodiment, the lower end of the cover plate 7 has a washer 8, and the upper end of the opening has multiple protrusions 10, with the washer 8 and the protrusions 10 positioned directly opposite each other. When the cover plate 7 moves downward, the protrusions 10 are inserted into the washer 8, thereby achieving a sealing effect. The washer 8 without corresponding protrusions 10 abuts against the container body 1, thereby achieving a sealing effect on the opening.

[0030] Furthermore, the washer 8 should be made of a relatively soft material; in this embodiment, the washer 8 is made of silver. Those skilled in the art can also use washer 8 made of other materials according to actual needs.

[0031] Furthermore, in this embodiment, the switch opening is circular, and multiple protrusions 10 are distributed circumferentially. The protrusions 10 have a triangular structure. Those skilled in the art can also set the protrusions 10 to trapezoidal, conical, or other structures, as long as the protrusions 10 can be inserted into the washer 8.

[0032] To achieve relative fixation between the rotating motor 3 and the sample tray 2, this embodiment also includes a fixing rod 9. The fixing rod 9 is made of a magnetic fluid material. The first end of the fixing rod 9 is fixed to the lower end of the sample tray 2, and the second end of the fixing rod 9 is fixed to the output shaft of the rotating motor 3. The fixing rod 9 passes through the bottom of the container body 1, so that the rotating motor 3 is located on the outside and below of the container body 1, which can prevent the heat generated by the heating furnace assembly 11 from affecting the rotating motor 3.

[0033] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic sample changing device for solid sample gas extraction, characterized in that: The device includes a container body, a sample tray, a rotating motor, an exhaust pipe, a lifting device, a cover plate, a heating furnace assembly, and a controller. The sample tray is located inside the container body. The output shaft of the rotating motor is fixedly connected to the lower end of the sample tray. The upper end of the sample tray is used to place multiple solid samples. The container body has a switch port and an exhaust port. The lifting device drives the cover plate to move up and down. The cover plate is detachably fixed to the switch port. The heating furnace assembly is fixed relative to the lower end of the cover plate and heats the solid samples. The rotating motor, the heating furnace assembly, and the lifting device are all electrically connected to the controller. The heating furnace assembly includes a furnace body, a chromium wire, an electrode flange, and a power supply. The lower end of the heating furnace assembly is open. The chromium wire is fixed to the furnace body, and the electrode flange is fixed to the cover plate. The chromium wire is connected to the first end of the electrode flange, and the second end of the electrode flange is electrically connected to the power supply. The power supply is electrically connected to the controller.

2. The automatic sample changing device for solid sample gas extraction according to claim 1, characterized in that: The lifting device includes a conveyor belt, a lifting motor, a drive roller, and a driven roller. The drive roller and the driven roller are located at both ends of the conveyor belt. The lifting motor is fixedly connected to the drive roller. The cover plate is fixed relative to the conveyor belt. The lifting motor is electrically connected to the controller.

3. The automatic sample changing device for solid sample gas extraction according to claim 2, characterized in that: It also includes a fixing block, the first end of which is fixed to the conveyor belt and the second end of which is fixed to the cover plate.

4. The automatic sample changing device for solid sample gas extraction according to claim 1, characterized in that: The lower end of the cover plate has a washer, and the upper end of the switch port has multiple protrusions, with the washer and the protrusions positioned directly opposite each other.

5. The automatic sample changing device for solid sample gas extraction according to claim 4, characterized in that: The washer is made of silver.

6. The automatic sample changing device for solid sample gas extraction according to claim 4, characterized in that: The switch opening is circular, and the multiple protrusions are distributed circumferentially, with each protrusion having a triangular structure.

7. The automatic sample changing device for solid sample gas extraction according to claim 1, characterized in that: It also includes a fixing rod, the first end of which is fixed to the lower end of the sample tray, and the second end of which is fixed to the output shaft of the rotating motor.

Images