Continuous sample pressing device for test sample

Abstract

The invention discloses a continuous sample pressing device for a test sample. The continuous sample pressing device comprises a sample pressing assembly and a sample storage assembly, the sample pressing assembly comprises a sample pressing disc, a sample pressing piece, a first driving piece, a material storage barrel, a second driving piece and a third driving piece; a plurality of groups of sample pressing holes are formed in the sample pressing disc; the sample storage assembly comprises a sample storage barrel, and a sample pressing ring is arranged in the sample storage barrel; a pulling piece is arranged in the sample storage barrel; the first driving piece drives the sample pressing disc to rotate, the sample pressing ring in the sample storage barrel enters the sample pressing hole in the sample pressing disc, and after the sample pressing ring enters the material storage barrel along with the rotation of the sample pressing disc to contain sample powder, the bottom end of the material storage barrel scrapes the sample powder on the sample pressing ring to be flat, and the sample powder enters the sample pressing piece to be pressed; the pressed cake-shaped sample falls into the sample storage barrel to be stored along with the rotation of the sample pressing disc, the continuous manufacturing of pressing the sample powder into the cake-shaped sample can be carried out along with the continuous rotation of the sample pressing disc, the pulling piece gradually moves downwards to reserve the storage space of the sample pressing ring, and the damage to the cake-shaped sample caused by the overlarge height difference when the sample pressing ring falls into the sample storage barrel is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical analysis, in particular to a continuous sample pressing device for test sample. BACKGROUND

[0002] X fluorescence analysis technology is also known as X-ray secondary emission spectrum analysis technology, which is a method for qualitative and quantitative analysis of material types and content according to the intensity of characteristic X-rays generated by the analyzed sample under primary X-rays. In the use process of X fluorescence analysis technology, the sample to be measured needs to be made into a ring cake-shaped sample for accurate analysis. For powders with poor viscosity, a simple and fast powder tabletting method is often used in production. In the specific operation, borax, polyethylene and the like are added to the sample as a binder to bond the powder, and then the bonded powder is pressed into a tablet.

[0003] In the traditional sample pressing, the sample is manually taken and placed in the sample pressing ring and then scraped flat for pressing, but in the scraping process, the powdery sample is easy to leak out and cause pollution, and after one pressing, the pressed sample needs to be manually taken out, cleaned and then placed in the sample pressing ring for pressing, which is difficult to continuously press the sample, and the manual pressing is low in efficiency. Patent No. CN106501047B discloses a powder sample preparation method for X fluorescence analysis, comprising the following steps: (1) providing a pressure receiving tray and arranging an XRF Mylar film on the pressure receiving tray; (2) placing a plastic ring on the XRF Mylar film; (3) adding the sample powder to be measured into the plastic ring, filling, scraping and pressing; according to the actual situation, the powder can be repeatedly added, scraped and pressed, and the powder in the plastic ring after pressing is flush with the ring opening; wherein, the scraping is to make the pressure on the surface of the sample during pressing equal; (4) placing the pressure receiving tray together with the plastic ring and the sample powder to be measured in the plastic ring on the workbench of the pressing machine, pressing the head of the pressing machine, and the plastic ring together with the sample powder to be measured in the plastic ring is pressed into a disc cake shape; (5) separating the XRF Mylar film together with the plastic ring and the sample powder to be measured (40) pressed into a disc cake shape from the pressure receiving tray; (6) arranging transparent adhesive on the exposed surface of the sample powder, and obtaining the sample to be analyzed. In this patent, it is difficult to continuously press the sample. SUMMARY

[0004] The main purpose of the present application is to provide a continuous sample pressing device for test sample, which solves the problem that the powdery sample is difficult to continuously press during sample preparation.

[0005] To achieve the above purpose, the present application provides a continuous sample pressing device for test sample, which comprises: The sample compression assembly comprises a sample compression disc, a sample compression piece arranged above the sample compression disc; a first driving piece is arranged at the bottom end of the sample compression disc; a plurality of groups of sample compression holes are arranged on the sample compression disc in a circumferential direction; a storage cylinder is arranged on the sample compression disc and communicates with part of the sample compression holes; a supporting disc is arranged at the bottom end of the sample compression disc; the storage cylinder and the supporting disc are respectively connected with the sample compression disc; a gap is formed between the supporting disc and the sample compression disc to form a sample collection space; a second driving piece is arranged on the sample compression piece; the first driving piece drives the sample compression disc to rotate under the action of an external force, so that part of the sample compression holes correspond to the sample compression piece; the second driving piece drives the sample compression piece to move downward into the sample compression hole under the action of an external force. The sample storage assembly comprises a sample storage cylinder arranged above the sample compression disc and a sample storage cylinder arranged below the sample compression disc; a sample compression ring is arranged in the sample storage cylinder; the sample storage cylinder corresponds to the sample compression hole and is gap-connected with the end of the sample compression disc; the sample compression ring is gap-connected with the sample compression hole, and the thickness of the sample compression ring is consistent with the depth of the sample compression hole; the sample storage cylinder is located in the sample collection space and is connected with the bottom end of the sample compression disc at the upper end surface; a pulling piece is arranged in the sample storage cylinder; a third driving piece is arranged on the pulling piece, and the pulling piece moves downward under the driving of the third driving piece.

[0006] As a further improvement of the present application, the sample compression holes are arranged in a circumferential direction along the edge of the sample compression disc, and the inner diameter of the sample compression hole is larger than the outer diameter of the sample compression ring, so that the two are gap-connected.

[0007] As a further improvement of the present application, the first driving piece comprises a first driving motor and a toothless gear connected with the output end of the first driving motor; a first driving shaft is arranged at the center of the sample compression disc; a first transmission gear is arranged on the first driving shaft; and the first transmission gear is engaged with the toothless gear.

[0008] As a further improvement of the present application, the sample compression disc is externally provided with a closed cover; and a supporting frame is arranged at the bottom end of the closed cover.

[0009] As a further improvement of the present application, the sample compression piece comprises a sample compression column and a rebound spring sleeved on the sample compression column; the second driving piece comprises a sample compression push rod connected with the sample compression column; and the sample compression column is gap-connected with the sample compression ring.

[0010] As a further improvement of the present application, the storage cylinder is a circular arc structure with a hollow interior, and the storage cylinder is installed in close contact with the inner wall of the closed cover; and an opening is arranged on the closed cover and communicates with the interior of the storage cylinder.

[0011] As a further improvement of the present application, the pulling piece comprises a pulling piston slidingly arranged in the sample storage cylinder and a pulling rod rotationally connected with the pulling piston; the third driving piece comprises an electric telescopic rod; and the output end of the electric telescopic rod is detachably connected with the pulling rod.

[0012] As a further improvement of the present application, a connecting screw sleeve is arranged on the pulling rod and is screwed with the output end of the electric telescopic rod.

[0013] As a further improvement of the present application, a pushing sample sleeve is further arranged above the sample storage cylinder.

[0014] The beneficial effects of the present application are embodied in: 1. The first driving member is arranged to drive the sample pressing disc to rotate, so that the sample pressing ring in the sample storage cylinder enters the sample pressing hole on the sample pressing disc, and after the sample pressing ring rotates into the sample storage cylinder to contain the sample powder, the sample pressing ring enters the sample pressing member for pressing, and the cake-shaped sample falls into the sample storage cylinder after being pressed by the sample pressing disc.

[0015] 2. The sample storage cylinder is in contact with the sample pressing disc, and when the sample pressing disc drives the sample pressing ring to enter the sample storage cylinder to contain the sample powder, the sample pressing disc contacts the bottom end of the sample storage cylinder after rotating to scrape the sample powder on the sample pressing ring, so that the sample powder in the sample pressing ring is pressed by the sample pressing member to form a cake-shaped sample, and the sample powder is prevented from spilling.

[0016] 3. The sample storage cylinder is arranged below the sample pressing disc, and after the sample powder in the sample pressing ring is pressed to form a cake-shaped sample, the sample falls into the sample storage cylinder for storage, and the pulling member in the sample storage cylinder gradually moves downward to leave a storage space of the sample pressing ring, so that the cake-shaped sample is prevented from being damaged due to a large height difference when the sample pressing ring falls into the sample storage cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the test sample continuous pressing device of the present application. Figure 2 It is an internal structure schematic view of the test sample continuous pressing device of the present application. Figure 3 It is a sample storage cylinder structure schematic view of the test sample continuous pressing device of the present application. Explanation of reference signs: 1. Sample pressing disc; 2. Sample pressing member; 201. Sample pressing column; 202. Connecting sleeve; 3. First driving member; 301. First driving motor; 302. Missing gear; 303. First driving shaft; 304. First transmission gear; 4. Sample pressing hole; 5. Sample storage cylinder; 6. Supporting disc; 7. Sample collecting space; 8. Second driving member; 9. Sample storage cylinder; 10. Sample storage cylinder; 11. Sample pressing ring; 12. Pulling member; 1201. Pulling piston; 1202. Pulling rod; 13. Third driving member; 14. Sealing cover; 15. Supporting frame; 16. Opening; 17. Cover; 18. Connecting screw sleeve; 19. Pushing sample sleeve; 20. Electric pushing rod; 21. Sealing door; 22. Sealing plug; 23. Discharging hole. DETAILED DESCRIPTION

[0018] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0019] Reference is made to Figure 1 、 2 The test sample continuous pressing device of the present application comprises a pressing assembly and a sample storage assembly.

[0020] The pressing assembly comprises a pressing disc 1 and a pressing member 2 arranged above the pressing disc 1. The bottom end of the pressing disc 1 is provided with a first driving member 3. A plurality of groups of pressing holes 4 are arranged on the pressing disc 1 in a circumferential direction. A storage cylinder 5 is arranged on the pressing disc 1 and communicates with some of the pressing holes 4. A support disc 6 is arranged at the bottom end of the pressing disc 1. The storage cylinder 5 and the support disc 6 are respectively connected to the pressing disc 1. A gap is formed between the support disc 6 and the pressing disc 1 to form a sample collection space 7. A second driving member 8 is arranged on the pressing member 2. The first driving member 3 drives the pressing disc 1 to rotate under the action of an external force, so that some of the pressing holes 4 correspond to the pressing member 2. The second driving member 8 drives the pressing member 2 to move downward into the pressing hole 4 under the action of an external force to press the sample. The sample storage assembly comprises a sample storage cylinder 9 arranged above the pressing disc 1 and a sample storage cylinder 10 arranged below the pressing disc 1. The sample storage cylinder 9 is provided with a pressing ring 11. The sample storage cylinder 9 corresponds to the pressing hole 4, and the end of the sample storage cylinder 9 is gap-fitted with the pressing disc 1. The pressing ring 11 is gap-fitted with the pressing hole 4. The thickness of the pressing ring 11 is consistent with the depth of the pressing hole 4. The sample storage cylinder 10 is located in the sample collection space 7 and is connected to the bottom end of the pressing disc 1 at the upper end surface. The sample storage cylinder 10 is provided with a pulling member 12. The pulling member 12 is provided with a third driving member 13. The pulling member 12 moves downward under the action of the third driving member 13.

[0021] During the pressing process of the test sample, the powder sample is usually manually dug and placed in the pressing ring 11. After the pressing ring 11 is scraped flat, the powder is pressed into a ring cake-shaped sample. During the pressing process of the sample, the manual operation is low in efficiency. When the sample powder is placed in the sample ring and scraped flat, the excess powder is easy to scatter outside and cause pollution and waste. After a piece of sample is pressed, the pressing table needs to be cleaned for sample pressing again, which is difficult to realize continuous pressing and causes low efficiency.

[0022] In the embodiment, reference is made to Figure 2The sample pressing disc 1 is in a disc structure, and a plurality of groups of sample pressing holes 4 are arranged at intervals along the edge of the sample pressing disc 1, the sample pressing holes 4 penetrate the sample pressing disc 1, and the sample pressing holes 4 are used for placing sample pressing rings 11, and the inner diameter of the sample pressing holes 4 is slightly larger than the outer diameter of the sample pressing rings 11 so that the sample pressing holes 4 and the sample pressing rings 11 are in clearance fit.

[0023] In the embodiment, referring to Figure 2 , the first driving member 3 comprises a first driving motor 301, the first driving motor 301 is a step motor in an existing structure, a speed reducer is arranged on the step motor, a missing tooth gear 302 is arranged on the output shaft of the speed reducer, a first driving shaft 303 is arranged at the center of the sample pressing disc 1, a first transmission gear 304 is arranged on the first driving shaft 303, the first transmission gear 304 is engaged with the missing tooth gear 302, and the first transmission gear 304 is electrically connected with the step motor through an external controller such as a PLC or a single-chip microcomputer to control the rotation of the step motor. Under the driving of the first driving motor 301, the sample pressing disc 1 rotates so that a group of sample pressing rings 11 stored in the sample storage cylinder 9 enters one of the sample pressing holes 4, and the sample pressing rings 11 are driven into the sample storage cylinder 5 along with the rotation of the sample pressing disc 1, and the sample powder in the sample storage cylinder 5 enters the sample pressing rings 11 to reach the sample pressing member 2.

[0024] In the embodiment, referring to Figure 2 , the sample pressing disc 1 is provided with a closed cover 14, the bottom end of the closed cover 14 is provided with a support frame 15, the closed cover 14 is a hollow cylinder, the first driving motor 301 is mounted on the bottom end of the closed cover 14 through bolts, the end of the first driving shaft 303 away from the sample pressing disc 1 penetrates the bottom end of the closed cover 14 and is close to the first driving motor 301, and a closed door 21 is arranged on the closed cover 14 through a hinge.

[0025] In the embodiment, referring to Figure 2 , the sample pressing member 2 comprises a sample pressing column 201, and the second driving member 8 comprises a sample pressing push rod connected with the sample pressing column 201, the sample pressing column 201 is in clearance fit with the sample pressing ring 11, the sample pressing push rod is an electric push rod 20, the sample pressing push rod is mounted on the top end of the closed cover 14 through bolts, a mounting box is arranged on the inner wall of the closed cover 14, a sliding hole is arranged on the mounting box, one end of the sample pressing column 201 penetrates the sliding hole and is located outside the mounting box, the sample pressing push rod is located in the mounting box, a connecting sleeve 202 is arranged on the end of the sample pressing column 201 located in the mounting box, the end of the sample pressing push rod is located in the connecting sleeve 202 and connects the connecting sleeve 202 and the sample pressing push rod through bolts, and under the pushing of the sample pressing push rod, the sample pressing column 201 moves downward into the sample pressing ring 11 to extrude the powder sample, so that the powder sample is formed into a cake shape.

[0026] In the embodiment, referring to Figure 2 , 3The storage cylinder 5 is in a circular arc structure with an inner cavity, is installed close to the inner wall of the closed cover 14, and is provided with an opening 16 on the closed cover 14, which is in communication with the inner part of the storage cylinder 5. The storage cylinder 5 can be inserted into the closed cover 14 from the opening 16 to contact the sample pressing disc 1. The top end of the storage cylinder 5 is provided with a cover 17. The edge of the storage cylinder 5 is convex and contacts the top end of the closed cover 14, and is detachably connected to the closed cover 14 through a screw, which facilitates the addition of the powder sample.

[0027] Further, referring to Figure 3 The upper part of the storage cylinder 5 is larger than the lower part, and the upper part and the lower part of the storage cylinder 5 are smoothly connected. The upper part of the storage cylinder 5 is convenient for storing the sample powder, and the lower part is in contact with the sample pressing disc 1 to guide the sample powder into the sample pressing ring 11.

[0028] Preferably, the bottom end of the storage cylinder 5 is provided with a discharging hole 23 in communication with the sample pressing hole 4.

[0029] In the embodiment, referring to Figure 2 The support disc 6 is in a disc structure, and is provided with a notch to form a vacancy, i.e., a sample receiving space 7, which facilitates the sample pressing ring 11 in the sample pressing hole 4 to fall from the notch.

[0030] In the embodiment, the first driving motor 301 rotates to drive the sample pressing disc 1 to rotate. In the process of rotating the sample pressing disc 1, the sample pressing ring 11 in the sample storage cylinder 9 moves downward. After a group of sample storage rings fall into the sample pressing hole 4 on the sample pressing disc 1, the sample storage ring in the sample pressing hole 4 is flush with the end face of the sample pressing disc 1, so that the sample pressing ring 11 in the sample storage cylinder 9 cannot continue to move downward. With the rotation of the sample pressing disc 1, the sample pressing ring 11 in the sample pressing hole 4 is separated from the sample storage cylinder 9, the sample pressing ring 11 in the sample storage cylinder 9 contacts the end face of the sample pressing disc 1 and falls into the empty sample pressing hole 4. In the process of rotating the sample pressing disc 1, the sample pressing hole 4 containing the sample pressing ring 11 enters the storage cylinder 5. At this time, the powder sample to be pressed can be poured into the storage cylinder 5, and the powder sample enters the sample pressing ring 11. With the rotation of the sample pressing disc 1, the sample pressing ring 11 continuously enters the storage cylinder 5 to store the sample powder. After the sample pressing disc 1 continuously rotates, the sample storage cylinder 5 is in contact with the sample pressing disc 1 to scrape the sample powder in the sample pressing ring 11 and move to the sample pressing column 201. At this time, the missing gear 302 is separated from the first transmission gear 304, and the sample pressing disc 1 will not rotate, so as to leave a pause time for the sample pressing push rod to push the sample pressing column 201 to extrude the sample powder in the sample pressing ring 11, thereby forming a handle-shaped sample.

[0031] It should be noted that, in order to ensure that the missing gear 302 is engaged with the first transmission gear 304 and leave a pause time, it is necessary to control according to the number of sample pressing holes 4, the number of teeth of the first transmission gear 304, and the number of teeth of the missing gear 302, such as interval setting eight groups of sample pressing holes 4, each group of sample pressing holes 4 corresponds to four groups of gear teeth, then the number of teeth of the first transmission gear 304 is thirty-two teeth, four groups of gear teeth are arranged on the missing gear 302, and occupy half of the area of the missing gear 302, and the other half is not provided with gear teeth, when the missing gear 302 rotates half a circle, four groups of gear teeth are engaged with the first transmission gear 304 to drive the first transmission gear 304 to rotate eighth, so that a group of sample pressing holes 4 is located below the sample pressing column 201, in the process of continuing to rotate the missing gear 302, the missing gear 302 is not engaged with the first transmission gear 304, and the sample pressing disc 1 will not rotate, at this time, the sample pressing operation can be carried out.

[0032] Based on the above embodiment, see Figure 2 The pulling member 12 comprises a pulling piston 1201 slidingly arranged in the sample storage cylinder 10, and a pulling rod 1202 rotationally connected with the pulling piston 1201, and the third driving member 13 comprises an electric telescopic rod, and an output end of the electric telescopic rod is detachably connected with the pulling rod 1202.

[0033] In the embodiment, see Figure 2 The sample storage cylinder 10 is a hollow cylinder with two open ends 16, the top end of the sample storage cylinder 10 penetrates through the closed cover 14 and is provided with a closing plug 22, the pulling piston 1201 is made of silica gel, and the pulling piston 1201 is in interference fit with the sample storage cylinder 10.

[0034] In the embodiment, see Figure 2 A connecting screw sleeve 18 is rotationally arranged on the pulling rod 1202, the connecting screw sleeve 18 is threadedly connected with the output end of the electric telescopic rod, after the sample storage cylinder 10 is full of the sample pressing rings 11, the closing door 21 can be opened, the connecting screw sleeve 18 is separated from the electric telescopic rod, and then the sample storage cylinder 10 can be taken out.

[0035] In the above arrangement, when the sample pressing disc 1 rotates to drive the sample pressing rings 11 to store sample powders into the sample pressing column 201 to perform the sample pressing operation, at this time, the pulling piston 1201 is flush with the top end of the sample storage cylinder 10, after the sample pressing operation of the sample powders in the sample pressing rings 11 is completed, the sample pressing disc 1 rotates again to drive the sample pressing completed pie-shaped sample, at this time, the electric telescopic rod moves downward, the pulling piston 1201 moves downward by 2mm-3mm, and a sample pressing ring 11 storage height is left.

[0036] Based on the above embodiment, see Figure 2The sample storage cylinder 10 is further provided with a sample pushing sleeve 19 above it, the sample pushing sleeve 19 is provided with an electric push rod 20, the electric push rod 20 is electrically connected with a controller, the sample pushing sleeve 19 is a hollow cylinder, the inner diameter of the sample pushing sleeve 19 is larger than the inner diameter of the sample pressing ring 11, and the outer diameter of the sample pushing sleeve 19 is smaller than the outer diameter of the sample pressing ring 11, so that the sample pushing sleeve 19 can abut against the sample pressing ring 11, when the sample powder in the sample pressing ring 11 is pressed into a cake shape and moves to the sample storage cylinder 10, the electric push rod 20 drives the sample pushing sleeve 19 to abut against the sample pressing ring 11, so as to make the sample pressing ring 11 exit the sample pressing hole 4 and enter the sample storage cylinder 10.

[0037] The above merely describes the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A continuous sample pressing device for test specimens, characterized in that: include: The sample pressing assembly includes a sample pressing plate (1) and a sample pressing component (2) disposed above the sample pressing plate (1). The bottom end of the sample pressing plate (1) is provided with a first driving component (3). Multiple sets of sample pressing holes (4) are provided on the sample pressing plate (1) at circumferential intervals. The sample pressing plate (1) is provided with a storage cylinder (5) communicating with some of the sample pressing holes (4). The bottom end of the sample pressing plate (1) is provided with a support plate (6). The storage cylinder (5) and the support plate (6) are respectively in contact with the sample pressing plate (1). There is a gap between the support plate (6) and the sample pressing plate (1) to form a sample receiving space (7). The sample pressing component (2) is provided with a second driving component (8). The first driving component (3) drives the sample pressing plate (1) to rotate under the action of external force so that some of the sample pressing holes (4) correspond to the sample pressing component (2). The second driving component (8) drives the sample pressing component (2) to move down into the sample pressing hole (4) for sample pressing under the action of external force. The sample storage assembly includes a sample storage cylinder (9) disposed above the sample pressing plate (1) and a sample storage cylinder (10) disposed below the sample pressing plate (1); the sample storage cylinder (9) is provided with a sample pressing ring (11), the sample storage cylinder (9) corresponds to the sample pressing hole (4) and the end of the sample storage cylinder (9) is in clearance fit with the sample pressing plate (1); the sample pressing ring (11) is in clearance fit with the sample pressing hole (4), and the thickness of the sample pressing ring (11) is consistent with the depth of the sample pressing hole (4); the sample storage cylinder (10) is located in the sample receiving space (7) and its upper end face is in contact with the bottom end of the sample pressing plate (1), and a pulling member (12) is provided inside the sample storage cylinder (10); a third driving member (13) is provided on the pulling member (12), and the pulling member (12) moves downward under the drive of the third driving member (13).

2. The continuous pressing device for test specimens according to claim 1, characterized in that: The pressure holes (4) are spaced along the edge of the pressure plate (1), and the inner diameter of the pressure holes (4) is larger than the outer diameter of the pressure ring (11) so that the two are fitted with a gap.

3. The continuous pressing device for test specimens according to claim 2, characterized in that: The first driving component (3) includes a first driving motor (301) and a missing gear (302) connected to the output end of the first driving motor (301); the center of the sample pressing plate (1) is provided with a first driving shaft (303); a first transmission gear (304) is provided on the first driving shaft (303); the first transmission gear (304) meshes with the missing gear (302).

4. The continuous pressing device for test specimens according to claim 3, characterized in that: The sample pressing plate (1) is provided with a closed cover (14) on the outside; the bottom end of the closed cover (14) is provided with a support frame (15).

5. The continuous pressing device for test specimens according to claim 4, characterized in that: The sample pressing component (2) includes a sample pressing column (201); the second driving component (8) includes a sample pressing push rod connected to the sample pressing column (201); the sample pressing column (201) is clearance-fitted with the sample pressing ring (11).

6. The continuous pressing device for test specimens according to claim 5, characterized in that: The storage cylinder (5) is a hollow arc-shaped structure, and the storage cylinder (5) is installed close to the inner wall of the closed cover (14); the closed cover (14) is provided with an opening (16) that communicates with the inside of the storage cylinder (5).

7. The continuous pressing device for test specimens according to claim 6, characterized in that: The pulling component (12) includes a pulling piston (1201) slidably disposed in the sample storage cylinder (10) and a pulling rod (1202) rotatably connected to the pulling piston (1201); the third driving component (13) includes an electric telescopic rod; the output end of the electric telescopic rod is detachably connected to the pulling rod (1202).

8. The continuous pressing device for test specimens according to claim 7, characterized in that: The pull rod (1202) is rotatably provided with a connecting screw sleeve (18), which is threadedly connected to the output end of the electric telescopic rod.

9. The continuous pressing device for test specimens according to claim 8, characterized in that: Above the sample storage cylinder (10) is a sample pusher sleeve (19); the sample pusher sleeve (19) is equipped with an electric pusher rod (20).

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