Solid sampling device for elemental analyzer

Abstract

The embodiment of the utility model provides a solid sampling device for an element analyzer, and relates to the field of experimental analysis instruments. The mounting seat comprises an upper chamber and a lower chamber; the sample introduction guide pipe fixedly penetrates through the mounting seat and is positioned between the upper chamber and the lower chamber, a sample placing hole is formed in one side, close to the upper chamber, of the sample introduction guide pipe, and a flat opening and closing door structure is arranged; a sampling hole is formed in one side, close to the lower chamber, of the sampling guide pipe, and an elastic opening and closing door structure is arranged; the automatic lofting gate box is arranged in the upper cavity, a plurality of solid sample carriers are stacked in the automatic lofting gate box, and magnet sheets are arranged on the side walls of the solid sample carriers; the solid carrier boat movably penetrates through the sample introduction guide pipe and comprises a carrier box and a pushing rod, the carrier box is connected to one end of the pushing rod, and a first electromagnetic sheet is arranged on the inner wall of the carrier box; and the other end of the pushing rod is connected with a rotary pushing mechanism arranged on one side of the mounting seat. According to the invention, multiple batches of solid samples can be automatically and sequentially injected, the sample injection efficiency can be improved, and the time and labor cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of experimental analysis instruments, in particular to a solid sample feeding device for an element analyzer. Background Art

[0002] Element content is one of the important testing indicators of products in the petrochemical industry. There are many types of test samples with different forms, mainly liquid, gas and solid phases. Different injection devices are used to inject different samples to complete the detection of the content of each element.

[0003] Most existing solid sampling devices require manual sampling during sampling. This results in the operator having to wait for the previous test and analysis to be completed before taking out the solid sample to be tested for sampling when batch sampling or repeated testing and analysis of the same solid sample is required. When the number of solid samples is large, a lot of time will be wasted. Utility Model Content

[0004] In view of the above problems, embodiments of the present invention are proposed to provide a solid sample introduction device for an elemental analyzer that overcomes the above problems or at least partially solves the above problems.

[0005] A solid sample feeding device for an element analyzer comprises a mounting seat, a sample feeding conduit, an automatic sample placing gate box, a solid carrying boat and a rotating propulsion mechanism;

[0006] The mounting base includes an upper chamber and a lower chamber; the sampling conduit is fixedly installed on the mounting base and is located between the upper chamber and the lower chamber; a sample-laying hole is provided on a side of the sampling conduit close to the upper chamber, and the sample-laying hole is provided with a flat opening and closing door structure; a lower sample hole is provided on a side of the sampling conduit close to the lower chamber, and the lower sample hole is provided with an elastic opening and closing door structure;

[0007] The automatic sample placement gate box is arranged in the upper chamber, and a plurality of solid sample carriers are stacked in the automatic sample placement gate box, and a magnet sheet is arranged on the side wall of the solid sample carrier;

[0008] The solid carrier boat is movably arranged in the sampling tube, and the solid carrier boat includes a carrier box and a propulsion rod. The carrier box is connected to one end of the propulsion rod. The inner wall of the carrier box is provided with a first electromagnetic sheet, which is attracted to the magnet sheet when energized; the other end of the propulsion rod is connected to the rotating propulsion mechanism provided on one side of the mounting seat.

[0009] Preferably, the automatic sampling gate box is slidably arranged in the upper chamber, and a cover is fastened on the top of the automatic sampling gate box. A second electromagnetic sheet opposite to one of the solid sample carriers is embedded in the lower part of the inner wall of the automatic sampling gate box near the magnet sheet, and the second electromagnetic sheet is attracted to the magnet sheet after being energized.

[0010] Preferably, the flat opening and closing door structure includes a movable door panel, a pushing block and a telescopic driving member, the movable door panel is adapted to the sample hole and is slidably embedded in the side wall of the sampling tube; the outer wall of the sampling tube close to the sample hole is provided with a strip hole, the pushing block passes through the strip hole and is fixedly connected to the movable door panel; the telescopic driving member is provided on the outer wall of the sampling tube and is located between the strip hole and the sample hole, and the telescopic end of the telescopic driving member is connected to the pushing block.

[0011] Preferably, the elastic opening and closing door structure includes an opening and closing door plate and a hinge, the hinge is fixed to one end of the lower sample hole, and the opening and closing door plate is elastically hinged to the hinge; wherein the opening direction of the opening and closing door plate is toward the lower chamber.

[0012] Preferably, a refrigeration component is provided on the inner wall of the upper chamber.

[0013] Preferably, the rotary propulsion mechanism includes a base, a rotating assembly and a propulsion assembly, the rotating assembly is arranged in the base, the propulsion assembly is arranged in the rotating assembly, and the propulsion assembly is connected to the end of the propulsion rod away from the carrier box.

[0014] Preferably, the rotating assembly includes a driving motor, a driving gear and a driven gear, the driving gear is sleeved on the output shaft of the driving motor, the driven gear is located above the driving gear and meshes with the driving gear; the propulsion assembly is connected to the gear shaft of the driven gear.

[0015] Preferably, the propulsion assembly comprises a telescopic cylinder.

[0016] Preferably, it further includes a base, and the mounting seat and the base are both arranged on the base.

[0017] Preferably, an outlet is provided below the side wall of the mounting seat, the outlet is communicated with the lower chamber, and a cover plate is provided at the outlet.

[0018] This application specifically includes the following advantages:

[0019] In an embodiment of the present application, a mounting seat, a sampling tube, an automatic sampling gate box, a solid carrier boat and a rotary propulsion mechanism are provided; the mounting seat includes an upper chamber and a lower chamber; the sampling tube is fixedly inserted into the mounting seat and is located between the upper chamber and the lower chamber, a sampling hole is provided on the side of the sampling tube close to the upper chamber, and the sampling hole is provided with a flat opening and closing door structure; a lower sample hole is provided on the side of the sampling tube close to the lower chamber, and the lower sample hole is provided with an elastic opening and closing door structure; the automatic sampling gate box is arranged in the upper chamber, a plurality of solid sample carriers are stacked in the automatic sampling gate box, and a magnet sheet is provided on the side wall of the solid sample carrier; the solid carrier boat is movably inserted into the sampling tube, and the solid carrier boat includes a carrier box and a propulsion rod, the carrier box is connected to one end of the propulsion rod, and the inner wall of the carrier box is provided with a first electromagnetic sheet, which is attracted to the magnet sheet when energized; the other end of the propulsion rod is connected to the rotary propulsion mechanism provided on one side of the mounting seat. The invention provides an upper chamber for installing an automatic sample placement gate box, wherein the automatic sample placement gate box is stacked with multiple solid sample carriers for automatically placing the solid sample carriers down; a sample placement hole is opened in the sampling conduit and closed by a flat opening and closing door structure, and when the solid sample carrier is placed down, the flat opening and closing door structure is opened to place it down into the sampling conduit; a solid carrier boat is movably arranged in the sampling conduit so that the solid sample carrier can fall into the carrier box; a rotary propulsion mechanism at one end of the propulsion rod is used to push the carrier box forward into the interior of the elemental analysis instrument, and the solid sample is placed into the instrument by rotating it; a first electromagnetic sheet and a magnet sheet are provided, so that the solid sample carrier and the carrier box can be pulled out together after the sample is placed, and the solid sample carrier can be placed down into the lower chamber through the sample placement hole of the sampling conduit after the first electromagnetic sheet is powered off. Through the above structure, the present application can realize the automatic sequential sampling of multiple batches of solid samples, and automatically perform the sampling after the instrument analysis is completed, which can improve the sampling efficiency and reduce time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the solid sample feeding device for element analyzer of the utility model;

[0022] Figure 2 This is a cross-sectional view of a solid sample feeding device for an element analyzer according to the present invention;

[0023] Figure 3 It is a structural diagram of the flat opening and closing door structure of the utility model;

[0024] Figure numerals: 1. Mounting seat; 11. Upper chamber; 12. Lower chamber; 13. Strip hole; 14. Cover plate; 2. Inlet tube; 21. Sample placement hole; 22. Lower sample hole; 3. Automatic sample placement gate box; 31. Solid sample carrier; 32. Second electromagnetic plate; 4. Solid carrier boat; 41. Carrier box; 411. First electromagnetic plate; 42. Propelling rod; 5. Rotating propulsion mechanism; 51. Base; 52. Driving motor; 53. Driving gear; 54. Driven gear; 55. Propelling assembly; 6. Flat opening and closing door structure; 61. Moving door panel; 62. Pushing block; 63. Telescopic driving member; 7. Elastic opening and closing door structure; 8. Base. DETAILED DESCRIPTION

[0025] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0026] Reference Figure 1-Figure 3 , shows a schematic structural diagram of a solid sample introduction device for an elemental analyzer of the present invention, which specifically includes the following structures: a mounting base 1, a sample introduction conduit 2, an automatic sample placement gate box 3, a solid carrier boat 4, and a rotating propulsion mechanism 5;

[0027] The mounting base 1 includes an upper chamber 11 and a lower chamber 12; the sampling conduit 2 is fixedly provided on the mounting base 1 and is located between the upper chamber 11 and the lower chamber 12; a sample opening 21 is provided on a side of the sampling conduit 2 close to the upper chamber 11, and the sample opening 21 is provided with a flat opening and closing door structure 6; a sample lowering hole 22 is provided on a side of the sampling conduit 2 close to the lower chamber 12, and the sample lowering hole 22 is provided with an elastic opening and closing door structure 7;

[0028] The automatic sample placement gate box 3 is arranged in the upper chamber 11. A plurality of solid sample carriers 31 are stacked in the automatic sample placement gate box 3. The side walls of the solid sample carriers 31 are provided with magnets.

[0029] The solid carrier boat 4 is movably arranged in the sample introduction tube 2, and the solid carrier boat 4 includes a carrier box 41 and a propulsion rod 42. The carrier box 41 is connected to one end of the propulsion rod 42. The inner wall of the carrier box 41 is provided with a first electromagnetic sheet 411. When the first electromagnetic sheet 411 is energized, it is attracted to the magnet sheet; the other end of the propulsion rod 42 is connected to the rotating propulsion mechanism 5 provided on one side of the mounting base 1.

[0030] In the embodiment of the present application, a mounting base 1, a sampling conduit 2, an automatic sampling gate box 3, a solid carrier boat 4 and a rotating propulsion mechanism 5 are provided; the mounting base 1 includes an upper chamber 11 and a lower chamber 12; the sampling conduit 2 is fixedly provided on the mounting base 1 and is located between the upper chamber 11 and the lower chamber 12, and a sampling hole 21 is provided on the side of the sampling conduit 2 close to the upper chamber 11, and the sampling hole 21 is provided with a flat opening and closing door structure 6; a lower sampling hole 22 is provided on the side of the sampling conduit 2 close to the lower chamber 12, and the lower sampling hole 22 is provided with an elastic opening and closing door structure 7; The automatic sampling gate box 3 is arranged in the upper chamber 11, and a plurality of solid sample carriers 31 are stacked in the automatic sampling gate box 3, and the side walls of the solid sample carriers 31 are provided with magnet sheets; the solid carrier boat 4 is movably passed through the sampling tube 2, and the solid carrier boat 4 includes a carrier box 41 and a push rod 42, the carrier box 41 is connected to one end of the push rod 42, and the inner wall of the carrier box 41 is provided with a first electromagnetic sheet 411, which is attracted to the magnet sheet when energized; the other end of the push rod 42 is connected to the rotating propulsion mechanism 5 provided on one side of the mounting base 1. An upper chamber 11 is provided on the mounting seat 1 for installing an automatic sample placement gate box 3, and the automatic sample placement gate box 3 is stacked with multiple solid sample carriers 31 for automatically lowering the solid sample carriers 31; a sample placement hole 21 is opened in the sampling conduit 2 and closed by a flat opening and closing door structure 6, and when the solid sample carrier 31 is lowered, the flat opening and closing door structure 6 is opened to lower it into the sampling conduit 2; the solid carrier boat 4 is movably inserted into the sampling conduit 2 so that the solid sample carrier 31 can fall into the carrier box 41; the carrier box 41 is pushed forward into the interior of the elemental analysis instrument by the rotating propulsion mechanism 5 at one end of the propulsion rod 42, and the solid sample is placed into the instrument by rotating; by providing a first electromagnetic sheet 411 and a magnet sheet, the solid sample carrier 31 and the carrier box 41 can be pulled out together after the sampling is completed, and after the first electromagnetic sheet 411 is powered off, the solid sample carrier 31 can be lowered into the lower chamber 12 through the sample placement hole 22 of the sampling conduit 2. Through the above structure, multiple batches of solid samples can be automatically injected in sequence. When the instrument analysis is completed, the sample is automatically injected, which can improve the injection efficiency and reduce time and labor costs.

[0031] Next, a solid sample introduction device for an element analyzer in this exemplary embodiment will be further described.

[0032] In the embodiment of the present application, the mounting base 1 includes an upper chamber 11 and a lower chamber 12; the sampling conduit 2 is fixedly inserted into the mounting base 1 and is located between the upper chamber 11 and the lower chamber 12; the sampling conduit 2 is provided with a sample placement hole 21 on the side close to the upper chamber 11, the sample placement hole 21 is communicated with the upper chamber 11, and the sample placement hole 21 is provided with a flat opening and closing door structure 6 for controlling the opening and closing of the sample placement hole 21. The sampling conduit 2 is provided with a lower sample hole 22 on the side close to the lower chamber 12, the lower sample hole 22 is communicated with the lower chamber 12, and the lower sample hole 22 is provided with an elastic opening and closing door structure 7 for controlling the opening and closing of the lower sample hole 22. The automatic sampling gate box 3 is provided in the upper chamber 11, and a plurality of solid sample carriers 31 are stacked in the automatic sampling gate box 3, and the side walls of the solid sample carriers 31 are provided with magnet sheets. Automatically depositing the sample through the automatic depositing gate box 3, the stacked multiple solid sample carriers 31 are sequentially lowered through the depositing hole 21 into the sample inlet conduit 2. The solid carrier boat 4 is movably installed in the sample inlet conduit 2 and includes a carrier box 41 and a push rod 42. The carrier box 41 is used to carry the solid sample carriers 31. The carrier box 41 is connected to one end of the push rod 42. The inner wall of the carrier box 41 is provided with a first electromagnetic sheet 411, which attracts the magnetic sheet when energized. The other end of the push rod 42 is connected to the rotary push mechanism 5 provided on one side of the mounting base 1.

[0033] By rotating the propulsion mechanism 5, the propulsion rod 42 can be driven to drive the carrier box 41 forward or retract backward, so that the solid sample carrier 31 can fall into the carrier box 41, and when the first electromagnetic sheet 411 is energized, it is magnetically fixed to it, so that it can be steadily pushed into the elemental analysis instrument, and the solid sample is rotated by rotating the propulsion mechanism 5 so that the solid sample falls from the solid sample carrier 31 into the instrument for analysis, and the magnetic attraction prevents the solid sample carrier 31 from falling during rotation. When the injection is completed, it is driven to move to the sample port, the first magnetic sheet is powered off, and the solid sample carrier 31 can be lowered to the lower chamber 12 for recovery. The carrier box 41 waits for the next solid sample carrier 31 to be lowered to realize injection. In this way, it can be ensured that each solid sample carrier 31 is separated independently, and each solid sample does not contact and affect each other; and automatic batch injection is realized to improve injection efficiency.

[0034] As an example, the automatic sample placement gate box 3 is slidably mounted on the upper chamber 11, which is connected to the outside. The automatic sample placement gate box 3 is slidably connected to the upper chamber 11 and can be removed to place a solid sample carrier 31, and then inserted into the upper chamber 11. The top of the automatic sample placement gate box 3 is fastened with a cover, which protects the solid sample carrier 31 placed inside. The lower part of the inner wall of the automatic sample placement gate box 3 near the magnet sheet is embedded with a second electromagnetic sheet 32 ​​opposite to one of the solid sample carriers 31. When the second electromagnetic sheet 32 ​​is energized, it attracts the magnet sheet. By arranging the second electromagnetic sheet 32 ​​at the bottom of the automatic sample placement gate box 3, it only attracts the solid sample carrier 31 at the bottom when energized. When the solid sample carrier 31 is lowered, the second electromagnetic sheet 32 ​​is de-energized, allowing the solid sample carrier 31 at the bottom to be lowered. After lowering, the second electromagnetic sheet 32 ​​is energized again to attract and fix the next solid sample carrier 31, preventing it from falling into the sample inlet conduit 2. It should be noted that the heights of the above-mentioned multiple solid-like carriers 31 are all the same, and the time for the second electromagnetic sheet 32 ​​to be powered on and off is fixed, so that the magnet sheet on the side wall of the bottom solid-like carrier 31 is powered on when it is just separated from the second electromagnetic sheet 32, and the next solid-like carrier 31 can be accurately adsorbed.

[0035] As an example, the horizontal opening and closing door structure 6 includes a movable door panel 61, a push block 62, and a telescopic drive member 63. The movable door panel 61 is adapted to the sample hole 21 and is slidably embedded in the side wall of the sampling conduit 2. The outer wall of the sampling conduit 2 near the sample hole 21 is provided with a strip hole 13, and the push block 62 passes through the strip hole 13 and is fixedly connected to the movable door panel 61. The telescopic drive member 63 is provided on the outer wall of the sampling conduit 2 and is located between the strip hole 13 and the sample hole 21. The telescopic end of the telescopic drive member 63 is connected to the push block 62. The telescopic drive member 63 can be a telescopic cylinder. When the telescopic drive member 63 is extended and retracted, it drives the push block 62 to move within the strip hole 13. The push block 62 drives the movable door panel 61 to slide within the side wall of the sampling conduit 2, closing or opening the sample hole 21. By providing the horizontal opening and closing door structure 6, it is possible to avoid restrictions on the up and down flipping and opening of the movable door panel 61. It should be noted that the above-mentioned flat opening and closing door structure 6 can be electrically connected to structures such as the element analysis instrument and the rotary propulsion mechanism 5, and the various structures can be linked through the main controller to achieve batch sampling.

[0036] As an example, the elastic opening and closing door structure 7 includes an opening and closing door panel and a hinged member, wherein the hinged member is fixed to one end of the sample lowering hole 22, and the opening and closing door panel is elastically hinged to the hinged member; wherein the opening direction of the opening and closing door panel is toward the lower chamber 12. When the sample is injected, the solid sample carrier 31 moves back to the sample lowering hole 22, and the rotary propulsion mechanism 5 rotates and lowers it. Under the action of gravity, the opening and closing door panel is opened downward, and the solid sample carrier 31 can be lowered into the lower chamber 12. The opening and closing door panel automatically resets through elastic recovery. By providing the elastic opening and closing door structure 7 in the sample lowering hole 22, the structure is simple and no circuit connection is required.

[0037] As an example, the inner wall of the upper chamber 11 is provided with a refrigeration element. This arrangement allows the solid sample carrier 31 stored therein to be cooled, preventing it from deteriorating or reacting. The top of the automatic sample gate box 3 is secured with a lid to seal it.

[0038] As an example, the rotary propulsion mechanism 5 includes a base 51, a rotating assembly, and a propulsion assembly 55. The rotating assembly is disposed within the base 51, and the propulsion assembly 55 is disposed within the rotating assembly. The propulsion assembly 55 is connected to the end of the propulsion rod 42 away from the carrier box 41. The rotating assembly drives the propulsion assembly 55 to rotate, thereby driving the propulsion rod 42 and the carrier box 41 to rotate synchronously, thereby achieving the injection of solid samples and the lowering of the solid sample carrier 31. The propulsion assembly drives the propulsion rod and the carrier box 41 forward or backward to place the solid sample into the instrument.

[0039] Furthermore, the rotating assembly includes a driving motor 52, a driving gear 53, and a driven gear 54. The driving gear 53 is sleeved on the output shaft of the driving motor 52, and the driven gear 54 is located above and meshes with the driving gear 53. The propulsion assembly 55 is connected to the gear shaft of the driven gear 54. When the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 drives the driven gear 54 to rotate, and the driven gear 54 drives the propulsion assembly 55 to rotate.

[0040] Furthermore, the propulsion assembly 55 includes a telescopic cylinder. The telescopic cylinder is extended and retracted to drive the push rod to extend and retract, thereby driving the carrier box 41 to move forward or backward.

[0041] As an example, an outlet is provided below the sidewall of the mounting base 1, communicating with the lower chamber 12. A cover plate 14 is provided at the outlet. Providing an outlet in the lower chamber 12 facilitates removal of the used solid sample carrier 31 for disposal or cleaning. Providing a cover plate 14 at the outlet improves the sealing of the lower chamber 12, thereby improving the sealing between the sample inlet conduit 2 and the upper chamber 11, and preventing degradation of the solid sample.

[0042] As an example, a base 8 is further included, and the mounting seat 1 and the base 51 are both arranged on the base 8. The base 8 is used to support the mounting seat 1 and the base 51 for easy installation and fixation.

[0043] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0044] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0045] The above is a detailed introduction to a solid sampling device for an elemental analyzer provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A solid sample feeding device for an element analyzer, characterized in that: It includes a mounting base, a sampling tube, an automatic sampling gate box, a solid carrying boat and a rotating propulsion mechanism; The mounting base includes an upper chamber and a lower chamber; the sampling conduit is fixedly installed on the mounting base and is located between the upper chamber and the lower chamber; a sample-laying hole is provided on a side of the sampling conduit close to the upper chamber, and the sample-laying hole is provided with a flat opening and closing door structure; a lower sample hole is provided on a side of the sampling conduit close to the lower chamber, and the lower sample hole is provided with an elastic opening and closing door structure; The automatic sample placement gate box is arranged in the upper chamber, and a plurality of solid sample carriers are stacked in the automatic sample placement gate box, and a magnet sheet is arranged on the side wall of the solid sample carrier; The solid carrier boat is movably arranged in the sampling tube, and the solid carrier boat includes a carrier box and a propulsion rod. The carrier box is connected to one end of the propulsion rod. The inner wall of the carrier box is provided with a first electromagnetic sheet, which is attracted to the magnet sheet when energized; the other end of the propulsion rod is connected to the rotating propulsion mechanism provided on one side of the mounting seat.

2. The solid sample feeding device for element analyzer according to claim 1, characterized in that: The automatic sample-laying gate box is slidably arranged in the upper chamber, and a cover is buckled on the top of the automatic sample-laying gate box. A second electromagnetic sheet opposite to one of the solid sample carriers is embedded in the lower part of the inner wall of the automatic sample-laying gate box near the magnet sheet, and the second electromagnetic sheet is attracted to the magnet sheet when energized.

3. The solid sample feeding device for an element analyzer according to claim 1, characterized in that: The horizontal opening and closing door structure includes a movable door panel, a pushing block and a telescopic driving member. The movable door panel is adapted to the sample hole and is slidably embedded in the side wall of the sampling conduit; a strip hole is opened on the outer wall of the sampling conduit near the sample hole, and the pushing block passes through the strip hole and is fixedly connected to the movable door panel; the telescopic driving member is arranged on the outer wall of the sampling conduit and is located between the strip hole and the sample hole, and the telescopic end of the telescopic driving member is connected to the pushing block.

4. The solid sample feeding device for an element analyzer according to claim 1 or 3, characterized in that: The elastic opening and closing door structure includes an opening and closing door plate and a hinge, wherein the hinge is fixed to one end of the lower sample hole, and the opening and closing door plate is elastically hinged to the hinge; wherein the opening direction of the opening and closing door plate is toward the lower chamber.

5. The solid sample feeding device for an element analyzer according to claim 1, characterized in that: The inner wall of the upper chamber is provided with a refrigeration component.

6. The solid sample feeding device for an element analyzer according to claim 1, characterized in that: The rotary propulsion mechanism includes a base, a rotating assembly and a propulsion assembly. The rotating assembly is arranged in the base, the propulsion assembly is arranged in the rotating assembly, and the propulsion assembly is connected to an end of the propulsion rod away from the carrier box.

7. The solid sample feeding device for element analyzer according to claim 6, characterized in that: The rotating assembly includes a driving motor, a driving gear and a driven gear, wherein the driving gear is sleeved on the output shaft of the driving motor, and the driven gear is located above the driving gear and meshes with the driving gear; The propulsion assembly is connected to the gear shaft of the driven gear.

8. The solid sample feeding device for an element analyzer according to claim 6, characterized in that: The propulsion assembly includes a telescopic cylinder.

9. The solid sample feeding device for an element analyzer according to claim 6, characterized in that: It also includes a base, and the mounting seat and the base are both arranged on the base.

10. The solid sample feeding device for an element analyzer according to claim 1, characterized in that: An outlet is provided below the side wall of the mounting seat, the outlet is communicated with the lower chamber, and a cover plate is provided at the outlet.

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