Sample barrel
By using a large and small gear meshing structure in the sample barrel to drive the cleaning of the L-shaped cleaning plate and installing magnets at the connection, the problem of difficulty in spilling sample raw materials and disassembling the bucket cover is solved, achieving higher sealing and more convenient operation.
Patent Information
- Application Number
- CN202411710311.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2044-11-27
AI Technical Summary
When existing sample barrels store powder or granular sample raw materials, it is easy to cause the sample raw materials to spill, reducing sealing, and it is difficult to disassemble the barrel lid.
A sample barrel is designed, adopting a meshing structure of large gears and pinions to drive the L-shaped cleaning plate to rotate and clean along the barrel opening to ensure sealing. At the same time, magnets are installed at the connection between the barrel body and the barrel cover to improve rapid installation and Convenience of disassembly.
It effectively reduces the spilling of sample raw materials, improves the sealing of sample barrels, and simplifies the removal process of bucket lids.
Smart Images

Figure CN119460424A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of sample barrels, and in particular relates to a sample barrel which can improve sealing performance and can be quickly disassembled and assembled. Background Art
[0002] Sample barrels are used to store various samples that need to be tested and sampled. Sample barrels usually consist of a barrel body and a barrel cover. However, in the process of storing samples in existing sample barrels, some powdered or granular sample materials are easy to fall into the barrel mouth during loading. If the barrel cover is not installed and closed directly without paying attention, the sample materials will exist in the connection between the barrel body and the barrel cover, which will greatly reduce the sealing performance of the sample barrel.
[0003] In addition, in order to enhance the sealing of the connection between the barrel body and the barrel cover, existing sample barrels are usually equipped with silicone products such as sealing strips and sealing rings, and some are also equipped with magnets to make the connection tighter. However, this will cause a certain amount of resistance at the connection between the barrel body and the barrel cover during disassembly, making it difficult to disassemble the sample barrel cover. Summary of the invention
[0004] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a sample barrel which can improve the sealing performance and can be quickly disassembled and assembled.
[0005] According to one aspect of the present invention, a sample barrel includes: a barrel body, two fixed blocks symmetrically fixed on the circumference of the top of the barrel body, a barrel cover is installed on the top of the barrel body, two connecting blocks are symmetrically fixed on the circumference of the barrel cover, the two fixed blocks correspond to the two connecting blocks one by one, the bottom inside the barrel cover is rotatably matched with a large gear, the bottoms inside the two connecting blocks are rotatably matched with small gears, the two small gears are meshed with the large gear, the outer ring of the large gear is symmetrically slid up and down and matched with two L-shaped cleaning plates, and the two L-shaped cleaning plates correspond to the barrel mouth above the barrel body.
[0006] In an example of the sample barrel provided in the above aspect, the middle thread of the pinion gear is matched with a screw rod, and a circular groove corresponding to the lower end of the screw rod is opened in the middle above the fixed block, and a disassembly and assembly component is installed in the fixed block, which is clamped with the peripheral side of the lower end of the screw rod and corresponds to the connection between the barrel body and the barrel cover.
[0007] In an example of the sample barrel provided in the above aspect, an annular track is provided on the bottom plate of the barrel cover, and two L-shaped cleaning plates are slidably fitted in the annular track.
[0008] In an example of a sample barrel provided on the one hand, two sliding grooves are symmetrically provided on the outer ring of the large gear, and two L-shaped cleaning plates are respectively slid up and down in the two sliding grooves, and two grooves are symmetrically provided at the edge below the barrel cover, and the lower ends of the two L-shaped cleaning plates correspond to the two grooves respectively.
[0009] In an example of a sample barrel provided in the above aspect, a turntable is rotatably fitted on the top of the barrel cover, a rectangular tube is fixed between the upper side of the large gear and the turntable, a first spring is fixed between the upper end of the L-shaped cleaning plate and the lower side of the turntable, and the first spring is located inside the rectangular tube, and the upper end of the L-shaped cleaning plate is slidably fitted in the rectangular tube.
[0010] In an example of the sample barrel provided in the above aspect, the circumference of the lower half of the screw is a smooth surface corresponding to the circular groove, and the radial circumference of the lower half of the screw is symmetrically provided with two grooves.
[0011] In an example of the sample barrel provided in the above aspect, the disassembly and assembly components include a groove opened inside the fixed block, a short splint and a long splint slidingly fitted on the inner wall of the groove, a clamping block fixed to the relatively inner sides of the short splint and the long splint, a trapezoidal block located at the bottom of the groove, a screw rod threadedly fitted in the middle of the trapezoidal block, and a triangular block fixed to the outer side of the upper end of the long splint.
[0012] In an example of the sample barrel provided in the above aspect, the relative inner ends of the upper sides of the two blocks are both arc-shaped surfaces, and the two blocks correspond to the two slots respectively, and a second spring is fixed between the inner wall of the slot and the relative outer sides of the short splint and the long splint.
[0013] In an example of the sample barrel provided in the above aspect, the two isosceles side walls of the trapezoidal block correspond to the lower ends of the short splint and the long splint respectively, the screw rod rotates and cooperates with the middle part below the fixed block, and the long splint is located on one side close to the barrel body.
[0014] In an example of the sample barrel provided in the above aspect, the triangular block is slidably fitted on top of the fixed block, and the bevel of the triangular block corresponds to the connection between the barrel body and the barrel cover.
[0015] Beneficial effects: The present invention uses a screw arranged in the middle of the pinion and two L-shaped cleaning plates arranged under the barrel cover, so that when the barrel cover is installed downward, the two screws drive the two pinions to mesh with the large gear, thereby synchronously driving the two L-shaped cleaning plates to rotate and clean along the barrel mouth above the barrel body, preparing for the subsequent closing of the barrel cover, effectively reducing the occurrence of materials spilling at the barrel mouth, and further ensuring the sealing of the barrel body and the barrel cover when they are closed. Furthermore, by arranging a magnet at the connection between the barrel body and the barrel cover, the barrel cover can be quickly aligned and installed. Furthermore, by utilizing the disassembly and assembly assembly arranged in the fixed block, the screw can be quickly generated or canceled. At the same time, when the barrel cover is removed, the disassembly and assembly assembly can also extend into the connection between the barrel body and the barrel cover, thereby reducing the force generated when the magnets attract each other, further facilitating the removal of the barrel cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and other aspects, features and advantages of the embodiments of the present invention will become more apparent through the following description in conjunction with the accompanying drawings, in which:
[0017] Figure 1 is a three-dimensional schematic diagram of a sample barrel according to an embodiment of the present invention;
[0018] Figure 2 is another three-dimensional schematic diagram of a sample barrel according to an embodiment of the present invention, wherein the top plate of the barrel cover is removed in order to clearly illustrate the internal structure of the barrel cover;
[0019] Figure 3 is a schematic diagram of the structure on the bottom plate of the barrel cover according to an embodiment of the present invention;
[0020] Figure 4 is another three-dimensional schematic diagram of a sample barrel according to an embodiment of the present invention, wherein, in order to clearly illustrate the internal structure of the fixing block, Figure 4 The fixing block on the middle right side is removed;
[0021] Figure 5 According to an embodiment of the present invention Figure 4 A cross-section of the sample barrel without the fixing block removed;
[0022] Figure 6 yes Figure 5 Magnified view of area A. DETAILED DESCRIPTION
[0023] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention may be implemented in many different forms, and the present invention should not be construed as being limited to the specific embodiments set forth herein. On the contrary, these embodiments are provided to explain the principles of the present invention and their practical applications, so that other persons skilled in the art can understand the various embodiments of the present invention and various modifications suitable for specific intended applications.
[0024] As used herein, the term "including" and its variations represent open terms, meaning "including but not limited to". The terms "based on", "according to", etc. mean "based at least in part on", "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification.
[0025] Figure 1 is a three-dimensional schematic diagram of a sample barrel according to an embodiment of the present invention.
[0026] Reference Figure 1 The sample barrel according to an embodiment of the present invention includes a barrel body 1, two fixing blocks 2 are symmetrically fixed on the sides of the barrel mouth of the barrel body 1, a barrel cover 3 is installed above the barrel mouth of the barrel body 1, two connecting blocks 4 are symmetrically fixed on the sides of the barrel cover 3, and the two fixing blocks 2 are respectively connected to the two connecting blocks 4 in a one-to-one correspondence.
[0027] In addition, magnets (not marked) that attract each other are arranged inside the edge of the barrel mouth of the barrel body 1 and inside the edge of the barrel cover 3 that corresponds to the edge of the barrel mouth of the barrel body 1. Further, sealing strips (not marked) are arranged on the edge of the barrel mouth of the barrel body 1 and the edge of the barrel cover 3 that corresponds to the edge of the barrel mouth of the barrel body 1. When the barrel body 1 and the barrel cover 3 are completely closed, the two sealing strips are fitted and correspond to each other, thereby achieving a sealed closure between the barrel body 1 and the barrel cover 3.
[0028] Figure 2 is another stereoscopic schematic diagram of a sample barrel according to an embodiment of the present invention. Figure 2 In order to clearly show the internal structure of the barrel cover 3, the top plate of the barrel cover 3 is removed. Figure 3 Schematic diagram of the structure on the bottom plate of the barrel cover according to an embodiment of the present invention.
[0029] Reference Figure 2 and Figure 3 The bottom of the barrel cover 3 is rotatably matched with a large gear 7, and the bottoms of the two connecting blocks 4 are rotatably matched with small gears 8. The two small gears 8 are engaged with the large gear 7. The outer ring of the large gear 7 is symmetrically slid up and down and matched with two L-shaped cleaning plates 11. The two L-shaped cleaning plates 11 correspond to the barrel mouth of the barrel body 1.
[0030] The lower part of the barrel cover 3 of this embodiment is provided with an annular track 5, and two L-shaped cleaning plates 11 are slidably fitted in the annular track 5. The outer ring of the large gear 7 is symmetrically provided with two sliding grooves (refer to Figure 6), the two L-shaped cleaning plates 11 slide up and down and fit in the two sliding grooves respectively, and two grooves 6 are symmetrically opened at the edge below the barrel cover 3, and the lower ends of the two L-shaped cleaning plates 11 correspond to the two grooves 6 respectively.
[0031] When the barrel cover 3 moves downward to close, the rotation of the large gear 7 will synchronously drive the two L-shaped cleaning plates 11 to move, so that the two L-shaped cleaning plates 11 slide along the annular track 5, and at the same time, the upper ends of the two L-shaped cleaning plates 11 slide in the two sliding grooves respectively until the lower end of the L-shaped cleaning plate 11 retracts into the groove 6, so that the lower side of the L-shaped cleaning plate 11 remains flush with the lower side of the barrel cover 3, so that the L-shaped cleaning plate 11 completes the cleaning of the barrel mouth and the barrel cover 3 is closed.
[0032] Figure 4 FIG. 2 is another three-dimensional schematic diagram of a sample barrel according to an embodiment of the present invention. Figure 4 In order to clearly show the internal structure of the fixed block 2, Figure 4 Remove the fixing block 2 on the middle right side. Figure 5 According to an embodiment of the present invention Figure 4 Cross-section of the sample barrel without the fixing block removed. Figure 6 yes Figure 5 Magnified view of area A.
[0033] Refer to Figures 4 to 6 The middle thread of the pinion 8 is matched with the screw 9, and a circular groove 12 corresponding to the lower end of the screw 9 is opened in the middle above the fixed block 2. A disassembly assembly is installed in the fixed block 2, which is clamped with the peripheral side of the lower end of the screw 9 and corresponds to the connection between the barrel body 1 and the barrel cover 3.
[0034] The application of one aspect of this embodiment is as follows: first, when installing the barrel cover 3, the barrel cover 3 is placed directly above the barrel body 1, and then the lower ends of the two screw rods 9 are respectively extended into the middle of the two circular grooves 12. At this time, the disassembly and assembly components in the fixed block 2 produce a clamping relationship with the screw rods 9, and then the barrel cover 3 is pressed downward. At this time, the two screw rods 9 are respectively threaded with the two small gears 8 and drive the two small gears 8 to rotate in the same direction, so that the two small gears 8 are meshed with the large gear 7, and then the large gear 7 drives the two L-shaped cleaning plates 11 to rotate synchronously along the barrel mouth above the barrel body 1, and the sum of the number of rotations of the two L-shaped cleaning plates 11 is one circle, thereby achieving cleaning of the barrel mouth, and at the same time, the two L-shaped cleaning plates 11 are gradually retracted into the barrel cover 3. At this time, the barrel body 1 and the barrel cover 3 are completely closed, and the two magnets are used to strengthen the closed connection relationship between the two, so as to achieve the installation of the barrel cover 3.
[0035] When the barrel cover 3 needs to be disassembled, the disassembly assembly needs to be rotated first, so that the disassembly assembly cancels the clamping relationship with the screw 9, and extends into the connection between the barrel body 1 and the barrel cover 3, so that a gap is generated between the barrel body 1 and the barrel cover 3, thereby reducing the suction force between the two magnets. At this time, the barrel cover 3 can be disassembled by directly picking up the barrel cover 3 manually. It should be noted that all electrical equipment involved in this application can be powered by batteries or external power supplies.
[0036] Continue to refer to Figure 5 In this embodiment, the top of the barrel cover 3 is rotatably matched with a turntable 20, a rectangular tube is fixed between the upper side of the large gear 7 and the turntable 20, a first spring 10 is fixed between the upper end of the L-shaped cleaning plate 11 and the lower side of the turntable 20, and the first spring 10 is located inside the rectangular tube, and the upper end of the L-shaped cleaning plate 11 is slidably matched in the rectangular tube.
[0037] When the large gear 7 rotates, the turntable 20 is synchronously driven to rotate through the two rectangular tubes. At this time, the upper end of the L-shaped cleaning plate 11 slides in the rectangular tube and squeezes the first spring 10. The first spring 10 is in a reduced and compressed state. Then the elastic rebound force of the first spring 10 makes the lower end of the L-shaped cleaning plate 11 always fit the barrel mouth to complete the cleaning work.
[0038] like Figure 5 and Figure 6 As shown, the lower half of the screw rod 9 of this embodiment is a smooth surface and corresponds to the circular groove 12, and two slots are symmetrically provided on the radial side of the lower half of the screw rod 9. When the barrel body 1 and the barrel cover 3 need to be installed, the lower halves of the two screw rods 9 are directly aligned and extended into the circular groove 12 in the middle of the upper part of the fixing block 2, and the smooth surface of the lower half of the screw rod 9 can reduce resistance, so that it is more convenient and smooth to be placed in the circular groove 12.
[0039] In addition, the disassembly and assembly components include a groove 13 opened inside the fixed block 2, a short splint 14 and a long splint 15 slidingly fitted on the inner wall of the groove 13, a clamping block 19 fixed to the relatively inner sides of the short splint 14 and the long splint 15, a trapezoidal block 16 located at the bottom of the groove 13, a screw rod 17 threadedly fitted in the middle of the trapezoidal block 16, and a triangular block 18 fixed to the outer side of the upper end of the long splint 15.
[0040] When the barrel cover 3 needs to be disassembled, first rotate the screw rod 17 so that the screw rod 17 and the trapezoidal block 16 threadedly cooperate to drive the trapezoidal block 16 to move upward. At this time, the trapezoidal block 16 is located between the short splint 14 and the long splint 15 and squeezes it, so that the short splint 14 and the long splint 15 move in parallel and opposite directions relative to the whole, thereby changing the distance between the short splint 14 and the long splint 15, making them relatively far away, and then the two clamping blocks 19 on the relatively inner sides of the short splint 14 and the long splint 15 withdraw from the clamping groove to cancel the clamping relationship of the screw rod 9. At the same time, the triangular block 18 on the outer side of the upper end of the long splint 15 extends into the connection between the barrel body 1 and the barrel cover 3, so that a slight gap is generated between the connection between the barrel body 1 and the barrel cover 3, reducing the attraction force between the magnets, and finally the barrel cover 3 can be opened manually.
[0041] The relative inner ends of the upper sides of the two clamping blocks 19 of this embodiment are both arc-shaped surfaces, and the two clamping blocks 19 correspond to the two clamping grooves respectively, and a second spring (not shown) is fixed between the inner wall of the channel 13 and the relative outer sides of the short clamping plate 14 and the long clamping plate 15 (i.e., the side of the short clamping plate 14 facing away from the long clamping plate 15, and the side of the long clamping plate 15 facing away from the short clamping plate 14). The two isosceles sides of the trapezoidal block 16 correspond to the lower ends of the short clamping plate 14 and the long clamping plate 15 respectively, and the screw rod 17 is rotatably matched with the middle part below the fixed block 2, and the long clamping plate 15 is located on the side close to the barrel body 1.
[0042] When the barrel cover 3 needs to be installed, the lower half of the screw rod 9 is aligned and extends into the circular groove 12 in the middle of the upper part of the fixing block 2, and then the lower end of the screw rod 9 contacts and squeezes the arc-shaped surfaces on the upper sides of the two clamping blocks 19. At this time, the second spring is in a compressed state. When the screw rod 9 is fully extended into the circular groove 12, the clamping block 19 is aligned with the position of the clamping groove. At this time, the elastic rebound force of the second spring drives the clamping block 19 to extend into the clamping groove to form a clamping relationship therewith, thereby completing the installation of the barrel cover 3. At this time, the trapezoidal block 16 should be located between the short clamping plate 14 and the long clamping plate 15 at the bottom exit of the groove 13.
[0043] The triangular block 18 of this embodiment is slidably fitted on the top of the fixed block 2, and the bevel of the triangular block 18 corresponds to the connection between the barrel body 1 and the barrel cover 3. When the short clamping plate 14 and the long clamping plate 15 are relatively far away from each other to cancel the clamping of the screw 9, the long clamping plate 15 will move to the side close to the barrel body 1, and then the long clamping plate 15 drives the bevel of the triangular block 18 to extend into the connection between the barrel body 1 and the barrel cover 3, thereby generating a slight gap between the connection between the barrel body 1 and the barrel cover 3.
[0044] In summary, in the sample barrel according to the embodiment of the present invention, by means of the screw rod arranged in the middle of the pinion gear and the two L-shaped cleaning plates arranged under the barrel cover, when the barrel cover is installed downward, the two screw rods drive the two pinions to mesh with the large gear, thereby synchronously driving the two L-shaped cleaning plates to rotate and clean along the barrel mouth above the barrel body, in preparation for the subsequent closing of the barrel cover, effectively reducing the occurrence of materials spilled at the barrel mouth, and further ensuring the sealing of the barrel body and the barrel cover when closed. Furthermore, by arranging a magnet at the connection between the barrel body and the barrel cover, the rapid alignment and installation of the barrel cover is improved. Furthermore, by using the disassembly and assembly assembly arranged in the fixed block, the screw rod can be quickly generated or cancelled. At the same time, when the barrel cover is removed, the disassembly and assembly assembly can also extend into the connection between the barrel body and the barrel cover, thereby reducing the force generated when the magnets attract each other, and further facilitating the removal of the barrel cover.
[0045] The terms "exemplary," "example," and the like used throughout this specification mean "used as an example, instance, or illustration" and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.
[0046] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
[0047] The above description of the contents of this specification is provided to enable any person of ordinary skill in the art to implement or use the contents of this specification. Various modifications to the contents of this specification will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the contents of this specification. Therefore, the contents of this specification are not limited to the examples and designs described herein, but are consistent with the widest range of principles and novel features disclosed herein.
Claims
1. A sample barrel, characterized in that: The sample barrel comprises: a barrel body (1), two fixing blocks (2) are symmetrically fixed on the circumference of the upper side of the barrel body (1), a barrel cover (3) is arranged on the upper side of the barrel body (1), two connecting blocks (4) are symmetrically fixed on the circumference of the barrel cover (3), the two fixing blocks (2) correspond to the two connecting blocks (4) one by one, the bottom of the barrel cover (3) is rotatably matched with a large gear (7), the bottoms of the two connecting blocks (4) are rotatably matched with small gears (8), the two small gears (8) are meshed with the large gear (7), the outer ring of the large gear (7) is symmetrically matched with two L-shaped cleaning plates (11) for sliding up and down, and the two L-shaped cleaning plates (11) correspond to the barrel mouth above the barrel body (1).
2. The sample barrel according to claim 1, characterized in that: The middle thread of the pinion (8) is matched with the screw rod (9), and the middle part above the fixing block (2) is provided with a circular groove (12) corresponding to the lower end of the screw rod (9). The fixing block (2) is provided with a disassembly assembly, which is clamped with the peripheral side of the lower end of the screw rod (9) and corresponds to the connection between the barrel body (1) and the barrel cover (3).
3. The sample barrel according to claim 1 or 2, characterized in that: An annular track (5) is provided on the bottom plate of the barrel cover (3), and two L-shaped cleaning plates (11) are slidably fitted in the annular track (5).
4. The sample barrel according to claim 1 or 2, characterized in that: The outer ring of the large gear (7) is symmetrically provided with two sliding grooves, and the two L-shaped cleaning plates (11) are respectively slidably fitted in the two sliding grooves up and down. The edge below the barrel cover (3) is symmetrically provided with two grooves (6), and the lower ends of the two L-shaped cleaning plates (11) correspond to the two grooves (6) respectively.
5. The sample barrel according to claim 1 or 2, characterized in that: A turntable (20) is rotatably engaged at the top of the barrel cover (3), a rectangular tube is fixed between the upper side of the large gear (7) and the turntable (20), a first spring (10) is fixed between the upper end of the L-shaped cleaning plate (11) and the lower side of the turntable (20), and the first spring (10) is located inside the rectangular tube, and the upper end of the L-shaped cleaning plate (11) is slidably engaged in the rectangular tube.
6. The sample barrel according to claim 2, characterized in that: The circumferential side of the lower half of the screw rod (9) is a smooth surface corresponding to the circular groove (12), and two clamping grooves are symmetrically provided on the radial circumferential side of the lower half of the screw rod (9).
7. The sample barrel according to claim 6, characterized in that: The disassembly assembly comprises a groove (13) opened inside the fixed block (2), a short clamp (14) and a long clamp (15) slidingly matched with the inner wall of the groove (13), a clamping block (19) fixed to the relatively inner sides of the short clamp (14) and the long clamp (15), a trapezoidal block (16) located at the bottom of the groove (13), a screw rod (17) threadedly matched with the middle part of the trapezoidal block (16), and a triangular block (18) fixed to the outer side of the upper end of the long clamp (15).
8. The sample barrel according to claim 7, characterized in that: The relative inner ends of the upper sides of the two clamping blocks (19) are both arc-shaped surfaces, and the two clamping blocks (19) correspond to the two clamping grooves respectively. A second spring is fixed between the inner wall of the groove (13) and the relative outer sides of the short clamping plate (14) and the long clamping plate (15).
9. The sample barrel according to claim 7, characterized in that: The two isosceles side walls of the trapezoidal block (16) respectively correspond to the lower ends of the short clamping plate (14) and the long clamping plate (15), the screw rod (17) is rotatably matched with the middle part below the fixed block (2), and the long clamping plate (15) is located on the side close to the barrel body (1).
10. The sample barrel according to claim 7, characterized in that: The triangular block (18) is slidably fitted on top of the fixed block (2), and the oblique angle of the triangular block (18) corresponds to the connection between the barrel body (1) and the barrel cover (3).
Citation Information
Patent Citations
Vegetable preservation box
CN107310853A
Quick-release dust removal charging basket
CN212605245U
Container cover that facilitates creating negative pressure and long time sealing
EP3372526A1