A sampling device for a biogas plant

Abstract

This utility model relates to a sampling device for biogas digesters, belonging to the field of biogas digester sampling technology. It includes an operating structure, a connecting structure, and a sample storage structure. The operating structure includes a handle and a main rod, and the connecting structure includes a connecting cylinder. This sampling device for biogas digesters designs the operating structure and connecting structure, along with the sample storage structure, in a way that facilitates disassembly. This allows the sample storage structure to be disassembled after sampling, avoiding the need for secondary sample transfer and reducing the impact of such transfers. Furthermore, the conical head and circular plate of the encapsulation component are tightly fitted to the inner wall of the storage cylinder through a sealing gasket, forming a double seal to prevent sample leakage or external contamination. The sealing ring, in conjunction with the sealing gasket, forms a double-sealed structure with an external interface seal and an internal storage seal, further improving sealing performance. The locking fastener and the storage cylinder's engagement structure are an integrated design, effectively protecting the connecting column and threaded sleeve.

Description

Technical Field

[0001] This utility model relates to the field of biogas digester sampling technology, specifically a sampling device for biogas digesters. Background Technology

[0002] Sampling of biogas digesters is a crucial step in monitoring biogas fermentation efficiency and assessing operational status. Biogas digester sampling can be divided into biogas sampling and fermentation broth sampling. Fermentation broth sampling requires the use of a sampling device, which consists of an operating mechanism, a piston mechanism, and a temporary storage mechanism. During sampling, one end of the temporary storage mechanism is inserted into the biogas digester. The piston is moved by controlling the operating mechanism to extract the fermentation broth from the biogas digester into the sampling device. The fermentation broth is then transferred to a container for storage. Fermentation broth samples are generally stored at room temperature away from light and should ideally be tested within 24 hours. If delayed testing is necessary, the sample can be refrigerated at around 4°C, but analysis should still be performed within 48 hours to ensure the accuracy of the test results.

[0003] Chinese utility model patent publication number CN222258843U discloses a household biogas digester sampler. In actual use, it is necessary to extract the fermentation liquid into the inside of the cylinder and then transfer the fermentation liquid to the sample storage container. During the transfer process, the fermentation liquid is easily exposed to air and sunlight, which affects the anaerobic microorganisms in the fermentation liquid and increases the ORP of the fermentation liquid, destroying the original anaerobic chemical environment and ultimately affecting the accuracy of the test data. Therefore, a sampling device for biogas digesters is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a sampling device for biogas digesters, which has the advantage of directly extracting fermentation broth into the sample storage structure. This solves the problem that in practical use, it is necessary to extract the fermentation broth into the inside of the cylinder and then transfer it to the sample storage container. During the transfer process, the fermentation broth is easily exposed to air and sunlight, which affects the anaerobic microorganisms in the fermentation broth and increases the ORP of the fermentation broth, destroying the original anaerobic chemical environment and ultimately affecting the accuracy of the test data.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for a biogas digester, comprising an operating structure, a connecting structure, and a sample storage structure, wherein the operating structure includes a handle and a main rod; The connecting structure includes a connecting cylinder, a locking fastener, a sealing ring, and an anti-slip sleeve. The connecting cylinder is slidably installed on the outer surface of the main rod, the locking fastener is fixedly installed on one end of the connecting cylinder, the sealing ring is sleeved on the outer surface of the locking fastener, and the anti-slip sleeve is fixedly installed on the connecting cylinder. The sample storage structure includes a storage cylinder, a packaging component, a connecting column, a threaded sleeve, and two sealing gaskets. The threaded sleeve is threadedly connected to one end of the main rod, one end of the connecting column is fixedly connected to the threaded sleeve, the packaging component is fixedly installed on one end of the connecting column, the storage cylinder is installed on the outer surface of the packaging component, and both sealing gaskets are fixedly installed on the outer surface of the packaging component.

[0006] Furthermore, the handle is fixedly installed at one end of the main rod, the main rod has a rectangular groove, and a limit strip is fixedly installed on the inner wall of the connecting cylinder, with the inner wall of the rectangular groove slidably connected to the limit strip.

[0007] Furthermore, the locking fastener includes an installation ring and two centrally symmetrically distributed arc-shaped hooks. The locking fastener is an integral structure. Two symmetrically distributed arc-shaped locking blocks are fixedly installed on the inner circumferential wall of the storage cylinder. The arc-shaped hooks are adapted to the arc-shaped locking blocks.

[0008] Furthermore, the encapsulation component includes a mounting rod, a cone head, and a circular plate. The mounting rod is fixedly installed between the cone head and the opposite side of the circular plate. Both sealing gaskets are sleeved on the outer surface of the mounting rod, and the opposite side of the cone head and the circular plate are respectively fixedly connected to the two sealing gaskets.

[0009] Furthermore, the cone, the circular plate, and the two sealing gaskets have the same diameter, and the diameter of the cone, the circular plate, and the two sealing gaskets is adapted to the inner diameter of the storage cylinder.

[0010] Furthermore, the connecting post has a slot inside, a magnet is fixedly installed inside the slot, a positioning block that is magnetically connected to the magnet is detachably installed on the slot, and four centrally symmetrical protrusions are fixedly installed on the outer surface of the connecting post.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects: This sampling device for biogas digesters features an easily detachable design for both the operating and connecting structures, along with the sample storage structure. This allows the sample storage structure to be disassembled after sampling, avoiding the need for secondary sample transfer and reducing the impact of such transfers. Furthermore, the conical head and circular plate of the encapsulation component are tightly fitted to the inner wall of the storage cylinder via a sealing gasket, forming a double seal to prevent sample leakage or external contamination. The sealing ring, in conjunction with the sealing gasket, forms a double-sealed structure with an external interface seal and an internal storage seal, further improving sealing performance. The locking fastener and the storage cylinder's engagement structure are integrated into a single unit, effectively protecting the connecting column and threaded sleeve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of the middle section; Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 2 Exploded view; Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 3 Exploded view of the inner package and connecting post; Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image; Figure 6 This is a cross-sectional view of the storage cylinder and connecting cylinder of this utility model.

[0013] In the diagram: 1. Operating structure; 11. Handle; 12. Main rod; 2. Connecting structure; 21. Connecting cylinder; 22. Locking fastener; 23. Sealing ring; 24. Anti-slip sleeve; 3. Sample storage structure; 31. Storage cylinder; 32. Encapsulation component; 33. Connecting column; 331. Magnet; 332. Positioning block; 333. Raised strip; 34. Threaded sleeve; 35. Sealing gasket. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: Please refer to Figure 1-6 The sampling device for a biogas digester in this embodiment includes an operating structure 1, a connecting structure 2 and a sample storage structure 3. The operating structure 1 includes a handle 11 and a main rod 12.

[0016] Example 2: Please refer to Figure 1-6Based on Embodiment 1, the connecting structure 2 includes a connecting cylinder 21, a locking fastener 22, a sealing ring 23, and an anti-slip sleeve 24. The connecting cylinder 21 is slidably installed on the outer surface of the main rod 12. The locking fastener 22 is fixedly installed on one end of the connecting cylinder 21. The sealing ring 23 is sleeved on the outer surface of the locking fastener 22. The anti-slip sleeve 24 is fixedly installed on the connecting cylinder 21. The sample storage structure 3 includes a storage cylinder 31, a packaging component 32, a connecting post 33, a threaded sleeve 34, and two sealing gaskets 35. The threaded sleeve 34 is threadedly connected to one end of the main rod 12. One end of the connecting post 33 is fixedly connected to the threaded sleeve 34. The packaging component 32 is fixedly installed on one end of the connecting post 33. The storage cylinder 31 is installed on the outer surface of the packaging component 32. Both sealing gaskets 35 are fixedly installed on the outer surface of the packaging component 32.

[0017] The handle 11 is fixedly installed at one end of the main rod 12. A rectangular groove is provided on the main rod 12. A limit strip is fixedly installed on the inner wall of the connecting cylinder 21. The inner wall of the rectangular groove is slidably connected to the limit strip, thereby limiting the maximum distance that the connecting cylinder 21 can move on the outer surface of the main rod 12.

[0018] In addition, the locking fastener 22 includes an installation ring and two centrally symmetrically distributed arc-shaped hooks. The locking fastener 22 is an integral structure. Two symmetrically distributed arc-shaped blocks are fixedly installed on the inner peripheral wall of the storage cylinder 31. The arc-shaped hooks are adapted to the arc-shaped blocks. The arc-shaped hooks of the locking fastener 22 and the arc-shaped blocks of the storage cylinder 31 can be quickly engaged. Installation and disassembly can be completed without tools, improving sampling efficiency.

[0019] Furthermore, the encapsulation component 32 includes a mounting rod, a cone, and a circular plate. The mounting rod is fixedly installed between the cone and the opposite side of the circular plate. Two sealing gaskets 35 are both sleeved on the outer surface of the mounting rod. The opposite side of the cone and the circular plate are respectively fixedly connected to the two sealing gaskets 35. The sealing ring 23 cooperates with the sealing gaskets 35 to form a double sealing structure of "external interface sealing plus internal storage sealing", which effectively prevents leakage, entry of external impurities or sample volatilization, and ensures the accuracy and safety of sampling.

[0020] Finally, the cone, the circular plate, and the two sealing gaskets 35 have the same diameter, and the diameter of the cone, the circular plate, and the two sealing gaskets 35 is adapted to the inner diameter of the storage cylinder 31. The cone and the circular plate of the encapsulation component 32 are adapted to the inner diameter of the storage cylinder 31, and the diameter of the sealing gasket 35 is consistent with the inner diameter of the storage cylinder 31, thus eliminating sealing dead angles and improving sealing reliability.

[0021] It should be noted that the connecting post 33 has a slot inside, and a magnet 331 is fixedly installed inside the slot. A positioning block 332 that is magnetically connected to the magnet 331 is detachably installed on the slot. Four centrally symmetrical protrusions 333 are fixedly installed on the outer surface of the connecting post 33. The magnet 331 inside the connecting post 33 is magnetically connected to the positioning block 332 to assist in the positioning of the storage cylinder 31, so that the disassembled storage cylinder 31 and the package 32 are fixed to each other.

[0022] Using the above technical solution, hold the connecting cylinder 21 with one hand, and push the handle 11 and the main rod 12 to control the connecting column 33 and the encapsulation piece 32 to extend along one end of the storage cylinder 31 until they extend to their maximum length. Then pull the handle 11 back to control the encapsulation piece 32 and the sealing gasket 35 to move synchronously, thereby drawing the fermentation liquid in the biogas digester into the storage cylinder 31. At this time, the encapsulation piece 32 and the sealing gasket 35 seal both ends of the storage cylinder 31. Then, insert the positioning block 332 into the slot and use the magnet 331 to attract the positioning block 332. The positioning block 332 restricts the position connection between the storage cylinder 31 and the encapsulation piece 32. Rotate the handle 11 and the main rod 12 in the opposite direction. This will cause the locking fastener 22 to rotate in the opposite direction via the connecting cylinder 21, thereby releasing the clamping of the arc-shaped block. Then, release the connection between the connecting cylinder 21 and the storage cylinder 31, exposing the threaded sleeve 34 and one end of the main rod 12. Rotate the threaded sleeve 34 to remove the sample storage structure 3 containing the sample from the main rod 12.

[0023] The working principle of the above embodiments is as follows: In use, the sampling device for biogas digesters connects the sample storage structure 3 to one end of the main rod 12 via a threaded sleeve 34. The stability of the threaded connection ensures the structure is secure. Then, the connecting cylinder 21 is moved along the axis of the main rod 12 toward the sample storage structure 3, so that the locking fastener 22 is inserted into the inside of the storage cylinder 31. Then, the handle 11 is rotated and the connecting cylinder 21 is rotated synchronously. The locking fastener 22 is rotated 180 degrees and the arc-shaped hook is used to hook the arc-shaped locking block of the storage cylinder 31, thus realizing the connection between the storage cylinder 31 and the connecting cylinder 21. Then, the assembled sampling device is inserted into the biogas digester. Holding the connecting tube 21 with one hand, the connecting column 33 and the encapsulation piece 32 are extended along one end of the storage tube 31 by pushing the handle 11 and the main rod 12 until they are extended to their maximum length. Then, the handle 11 is pulled back to control the encapsulation piece 32 and the sealing gasket 35 to move synchronously, thereby drawing the fermentation liquid in the biogas digester into the storage tube 31. At this time, the encapsulation piece 32 and the sealing gasket 35 seal both ends of the storage tube 31. Then, the positioning block 332 is inserted into the slot. The positioning block 332 is attracted by the magnet 331. The positioning block 332 restricts the position connection between the storage tube 31 and the encapsulation piece 32 to ensure the sealing effect. After sampling is completed, the handle 11 and the main rod 12 are rotated in the opposite direction, which in turn drives the locking fastener 22 to rotate 180 degrees in the opposite direction through the connecting cylinder 21, thereby releasing the clamping of the arc-shaped block. Then, the connecting cylinder 21 is moved towards the handle 11 to release the connection between the connecting cylinder 21 and the storage cylinder 31, exposing the threaded sleeve 34 and one end of the main rod 12. Then, the threaded sleeve 34 is rotated to remove the sample storage structure 3 containing the sample from the main rod 12.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for a biogas digester, comprising an operating structure (1), a connecting structure (2), and a sample storage structure (3), characterized in that: The operating structure (1) includes a handle (11) and a main rod (12). The connecting structure (2) includes a connecting cylinder (21), a locking fastener (22), a sealing ring (23), and an anti-slip sleeve (24). The connecting cylinder (21) is slidably installed on the outer surface of the main rod (12). The locking fastener (22) is fixedly installed on one end of the connecting cylinder (21). The sealing ring (23) is sleeved on the outer surface of the locking fastener (22). The anti-slip sleeve (24) is fixedly installed on the connecting cylinder (21). The sample storage structure (3) includes a storage cylinder (31), a package (32), a connecting post (33), a threaded sleeve (34), and two sealing gaskets (35). The threaded sleeve (34) is threadedly connected to one end of the main rod (12). One end of the connecting post (33) is fixedly connected to the threaded sleeve (34). The package (32) is fixedly installed on one end of the connecting post (33). The storage cylinder (31) is installed on the outer surface of the package (32). Both sealing gaskets (35) are fixedly installed on the outer surface of the package (32).

2. The sampling device for a biogas digester according to claim 1, characterized in that: The handle (11) is fixedly installed at one end of the main rod (12). A rectangular groove is provided on the main rod (12). A limit strip is fixedly installed on the inner wall of the connecting cylinder (21). The inner wall of the rectangular groove is slidably connected to the limit strip.

3. A sampling device for a biogas digester according to claim 1, characterized in that: The locking fastener (22) includes an installation ring and two arc-shaped hooks that are centrally symmetrically distributed. The locking fastener (22) is an integral structure. Two arc-shaped blocks that are symmetrically distributed are fixedly installed on the inner circumferential wall of the storage cylinder (31). The arc-shaped hooks are adapted to the arc-shaped blocks.

4. A sampling device for a biogas digester according to claim 1, characterized in that: The encapsulation component (32) includes a mounting rod, a cone head, and a circular plate. The mounting rod is fixedly installed between the cone head and the opposite side of the circular plate. The two sealing gaskets (35) are both sleeved on the outer surface of the mounting rod. The opposite side of the cone head and the circular plate are respectively fixedly connected to the two sealing gaskets (35).

5. A sampling device for a biogas digester according to claim 4, characterized in that: The cone, the circular plate, and the two sealing gaskets (35) have the same diameter, and the diameter of the cone, the circular plate, and the two sealing gaskets (35) is adapted to the inner diameter of the storage cylinder (31).

6. A sampling device for a biogas digester according to claim 1, characterized in that: The connecting post (33) has a slot inside, and a magnet (331) is fixedly installed inside the slot. A positioning block (332) that is magnetically connected to the magnet (331) is detachably installed on the slot. Four centrally symmetrical protrusions (333) are fixedly installed on the outer surface of the connecting post (33).

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