A large-scale aerobic composting sampler and sampling method thereof

Abstract

The invention discloses a large-scale aerobic composting sampler and a sampling method thereof, comprising a control handle, a connecting rod, a hollow supporting rod, a sampling barrel, an injection port and a blocking slice; the injection port is eccentrically arranged on the bottom wall of the sampling barrel; the supporting rod is connected and arranged on the top wall of the sampling barrel; the connecting rod is movably inserted in the supporting rod and the sampling barrel, the top end of the connecting rod extends out of the supporting rod, and the bottom end of the connecting rod passes through the bottom wall of the sampling barrel and extends out of the sampling barrel; the control handle is connected to the top end of the connecting rod, the blocking slice is connected to the bottom end of the connecting rod, and the control handle can control the connecting rod to rotate, so as to drive the blocking slice to rotate to the bottom of the injection port and close the injection port.

Description

Technical Field

[0001] The invention relates to a large-scale aerobic composting sampler and a sampling method thereof, belonging to the technical field of fixed waste disposal and resource utilization. Background Art

[0002] In recent years, with the rapid development of my country's animal husbandry, the annual output of livestock and poultry manure has reached about 3.8 billion tons. If such a huge amount of livestock and poultry manure is not used reasonably, it will not only lead to a large waste of organic resources, but also cause serious soil, water, gas and biological pollution, endangering ecological balance and human health. High-temperature aerobic composting is one of the mainstream methods for large-scale treatment of livestock and poultry manure in my country to achieve its resource utilization, harmlessness and reduction. The commonly used large-scale high-temperature aerobic composting methods in my country include trough type, windrow type, film type and reactor type. During the composting process, it is often necessary to take samples of the pile for physical, chemical and biological analysis to monitor the composting maturity process. However, due to forced ventilation or compaction of materials, oxygen is unevenly distributed inside the pile, with sufficient oxygen supply in the surface and bottom layers and less oxygen supply in the inner layer, resulting in obvious differences in the basic properties of the pile and inconsistent maturity process. Therefore, using a suitable compost sampler to simultaneously collect samples at different spatial gradients of the pile, thereby monitoring the overall maturity of the pile, is of great significance for optimizing the composting process and promoting high-quality and efficient composting.

[0003] At present, the main sampling methods in the actual composting process are: 1. Grabbing with bare hands. This method causes less disturbance to the pile, but is extremely unhygienic, especially in the early stage of composting when there are a large number of pathogenic bacteria in the pile, which poses a threat to the health of the samplers; 2. Using simple tools such as shovels or spades. This method causes greater disturbance to the pile, which will accelerate the emission of harmful and smelly gases inside, and will also endanger the health of the samplers. Both methods can only accurately collect compost samples from the shallow layer of the pile, but cannot collect samples from deep in the pile. At the same time, there are disadvantages such as insufficient sampling accuracy. In view of the shortcomings of traditional composting sampling methods and sampling tools, relevant scholars have designed a series of special composting samplers, such as the spiral samplers for aerobic composting materials introduced in the utility model patents "ZL 201620095970.9" and "ZL 201320209301.6". By arranging spiral blades with different pitches and different rotation directions on the spiral conveying shaft, the target sample moves along the conveying pipe from the reactor to the sampling port under the action of the spiral blades, thereby achieving the purpose of collecting samples. However, the samplers introduced in these two utility model patents need to be fixed to the sampling port by a fixed support, so they can only realize the sample collection work of the composting reactor, and are not suitable for windrow, trough and film-covered composting. The invention patent "ZL 201410359025.0" introduces a quantitative composting sampler and a sampling method thereof, which is mainly composed of an ellipsoid drill, a first and a second control handle, a closable agitator, a closable spiral device and a sample collecting tube. By turning the first and the second control handles, the closable agitator and the closable spiral device are respectively controlled to open and close, so as to complete sampling, mixing and loading. However, since the sampling hole of this invention patent is only 5mm, the material uniformity requirement is too high, and there is a problem of low sampling efficiency. In addition, it can only collect samples within 30cm of the surface of the pile, and cannot complete deep sampling. The above existing sampling devices cannot meet the needs of large-scale aerobic composting. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a large-scale aerobic composting sampler and a sampling method thereof, which can meet the sampling requirements of different scales and aerobic composting methods. At the same time, it can collect compost samples at different depth gradients of the pile. It has the advantages of easy carrying, simple operation, little disturbance to the pile, safety and hygiene, etc.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a large-scale aerobic composting sampler, comprising a control handle, a connecting rod, a hollow support rod, a sampling tube, an injection port and a baffle plate; the injection port is eccentrically opened on the bottom wall of the sampling tube; the support rod is connected and arranged on the top wall of the sampling tube; the connecting rod is movably inserted into the support rod and the sampling tube, the top end of the connecting rod extends out of the support rod, and the bottom end of the connecting rod passes through the bottom wall of the sampling tube and extends out of the sampling tube; the control handle is connected to the top end of the connecting rod, and the baffle plate is connected to the bottom end of the connecting rod, and the control handle can control the rotation of the connecting rod to drive the baffle plate to rotate to the bottom of the injection port and close the injection port.

[0006] In some embodiments, the sampling tube has a sampling half-zone and an idle half-zone, and the sampling half-zone and the idle half-zone are separated by a partition; the injection port is located on the bottom wall of the sampling half-zone, and a drill bit is arranged on the bottom wall of the idle half-zone, and a gap for accommodating the blocking slice is left between the drill bit and the bottom wall of the sampling tube; the partition has a hollow cavity that passes through the top wall and the bottom wall of the sampling tube, and is connected with the hollow cavity of the support rod, and the connecting rod is movably inserted into the hollow cavity on the support rod and the partition.

[0007] In some embodiments, the edge cross-section of the injection port is V-shaped.

[0008] In some embodiments, the stop piece is semi-disc-shaped and is detachably connected to the bottom end of the connecting rod. The stop piece is located in the gap between the bottom wall of the idle half zone and the drill bit, and the edge cross-section of the stop piece is V-shaped; the drill bit adopts a hollow semi-conical structure.

[0009] In some embodiments, a fixed handle is detachably connected to the top end of the support rod, the fixed handle is a cylindrical structure, and the surface of the fixed handle has anti-slip textures; the control handle is a cylindrical structure, and the control handle is detachably connected to the top end of the connecting rod; the surface of the control handle has anti-slip textures.

[0010] In some embodiments, a limiting buckle for fixing the control handle is provided on the fixed handle.

[0011] In some embodiments, a sample transfer port is provided on the side wall of the sampling cylinder located in the sampling half area, and a side cylinder cover is movably fastened at the sample transfer port.

[0012] In some embodiments, the outer walls of the sampling cylinder and the support rod are evenly distributed with scales from bottom to top, with the minimum scale being -10 cm and the maximum scale being the total height of the sampling cylinder and the support rod minus 10 cm; the surfaces of the inner and outer walls of the sampling cylinder are smoothed.

[0013] In some embodiments, the support rod is detachably mounted on the top of the sampling tube, the support rod is composed of multiple hollow rods connected in series, and the adjacent two hollow rods are detachably connected, and the sampling tube is composed of multiple tube segments connected in series, and the adjacent two tube segments are detachably connected.

[0014] In addition, the present invention also provides a sampling method based on the large-scale aerobic composting sampler in any of the above embodiments, comprising the following steps:

[0015] 1) The connecting rod is driven to rotate by the control handle so that the blocking slice is located on the opposite side of the injection port, and the position of the control handle is fixed;

[0016] 2) Insert the sampling tube into the pile body and stop when it reaches the selected depth. Then, drive the connecting rod to rotate 180° through the control handle and fix the position of the control handle;

[0017] 3) Slightly shake the sampler to slightly solidify the pile at the insertion position, and then slowly pull the sampler out of the pile;

[0018] 4) Place the sampler horizontally on the ground, use a small shovel to transfer the required sample to the sample bag through the sampling port, and freeze it.

[0019] The present invention adopts the above technical scheme, which has the following advantages: 1. The sampler provided by the present invention includes a control handle, a connecting rod, a hollow support rod, a sampling tube, an injection port and a baffle slice. The injection port is eccentrically opened on the bottom wall of the sampling tube, and the support rod is connected and arranged on the top wall of the sampling tube. The connecting rod is movably inserted into the support rod and the sampling tube. The top end of the connecting rod extends out of the support rod and is connected to the control handle, and the bottom end of the connecting rod extends out of the sampling tube and is connected to the baffle slice. The sampling tube is inserted into the pile body for sampling. Before pulling out, the connecting rod is controlled to rotate by the control handle so that the baffle slice closes the injection port to avoid sampling failure. The entire sampler is simple and quick to operate, with little disturbance to the pile body, and is safe and hygienic. It can meet the sampling requirements under different scales and aerobic composting methods, and can collect compost samples at different depth gradients of the pile body. 2. The sampling tube of the present invention has a sampling half-area and an idle half-area separated by a partition. The injection port is located on the bottom wall of the sampling half-area. The sample directly enters the sampling half-area from the injection port and will not be deflected and accumulated in the idle half-area. In this way, the samples of different depth gradients in the sampling half-area are evenly distributed, avoiding confusion of samples of different depth gradients, which is beneficial to subsequent detection and analysis. 3. A drill bit is arranged on the bottom wall of the idle half-area of ​​the sampling tube of the present invention. The drill bit can adopt a drill bit structure with a thick top and a thin bottom, such as a hollow semi-conical structure. A gap for accommodating a blocking slice is left between the drill bit and the bottom wall of the sampling tube. The drill bit can reduce the resistance of the sampling tube inserted into the pile body and reduce the disturbance to the pile body. When sampling, the blocking slice can be placed in the gap between the bottom wall of the sampling tube and the drill bit to ensure smooth sampling. 4. The control handle and the connecting rod, the fixed handle and the support rod, and the blocking slice and the connecting rod of the present invention are all detachably connected, such as threaded connections. The support rod is detachably mounted on the top of the sampling cylinder. The sampling cylinder can be designed to be formed by connecting a plurality of cylinder sections in series as required, and the support rod can be designed to be formed by connecting a plurality of hollow rods in series as required. On the one hand, the sampler can collect compost samples at different depth gradients of the pile simultaneously or separately, and can be suitable for sampling requirements under different scales and aerobic composting methods. On the other hand, the sampler is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a good compost sampler in one embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of the sampling tube of the present invention;

[0022] Figure 3 yes Figure 1 A partial enlarged view of the middle A;

[0023] Figure 4 A schematic structural diagram of a cut-off section of the present invention;

[0024] In the figure, 1. control handle; 2. fixed handle; 3. connecting rod; 4. support rod; 5. sampling cylinder; 51. sampling half area; 52. idle half area; 6. side cylinder cover; 7. injection port; 8. slice block; 9. drill bit; 12. limit buckle. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “top”, “bottom”, “up”, “down”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0027] like Figures 1 to 4 As shown, the present invention provides a large-scale aerobic composting sampler, comprising a control handle 1, a connecting rod 3, a hollow support rod 4, a sampling tube 5, an injection port 7 and a blocking slice 8; the injection port 7 is eccentrically opened on the bottom wall of the sampling tube 5; the hollow support rod 4 is connected and arranged on the top wall of the sampling tube 5; the connecting rod 3 is movably inserted into the hollow support rod 4 and the sampling tube 5, the top end of the connecting rod 3 extends out of the hollow support rod 4, and the bottom end of the connecting rod 3 passes through the bottom wall of the sampling tube 5 and extends out of the sampling tube 5; the control handle 1 is connected to the top end of the connecting rod 3, and the blocking slice 8 is connected to the bottom end of the connecting rod 3, and the control handle 1 can control the rotation of the connecting rod 3 to drive the blocking slice 8 to rotate to the bottom of the injection port 7 and close the injection port 7.

[0028] In the above embodiment, preferably, the sampling tube 5 has a sampling half area 51 and an idle half area 52, and the sampling half area 51 and the idle half area 52 are separated by a partition; the injection port 7 is located on the bottom wall of the sampling half area 51, and a drill bit 9 is arranged on the bottom wall of the idle half area 52. A gap for accommodating the blocking slice 8 is reserved between the drill bit 9 and the bottom wall of the sampling tube 5, so that the blocking slice 8 can be stored in the gap when it is transferred from the injection port 7 side to the drill bit 9 side without affecting the sampling operation; the partition has a hollow cavity that passes through the top wall and the bottom wall of the sampling tube 5, and is connected with the hollow cavity of the support rod 4, and the connecting rod 3 is movably arranged in the hollow cavity on the support rod 4 and the partition. The drill bit 9 is arranged to reduce the resistance when the sampling tube 5 is inserted into the pile body and prevent disturbance to the pile body; the sampling half area 51 and the idle half area 52 are separated by a partition, so that the samples collected in the sampling half area 51 at different depth gradients will not be confused, which is conducive to subsequent detection and analysis.

[0029] In the above embodiment, preferably, the edge section of the injection port 7 is V-shaped, so that the edge of the injection port 7 is sharper, reducing the resistance when the sampling tube 5 is inserted into the stack body and preventing disturbance to the stack body.

[0030] In the above embodiment, preferably, the baffle slice 8 is semi-disc-shaped and detachably connected to the bottom end of the connecting rod 3. The baffle slice 8 is located in the gap between the bottom wall of the idle half area 52 and the drill bit 9. The edge cross-section of the baffle slice 8 is V-shaped, so that the edge of the baffle slice 8 is sharper, which is convenient for cutting into the pile material and closing the sampling port 7 to prevent the sample from slipping from the sampling port 7 when the sampler is taken out after sampling, resulting in sampling failure. Specifically, the baffle slice 8 is threadedly connected to the bottom end of the connecting rod 3.

[0031] In the above embodiment, the drill bit 9 has a thick upper part and a thin lower part structure to reduce the resistance when the sampling tube 5 is inserted into the pile body and prevent disturbance of the pile body. Specifically, the drill bit 9 can adopt a hollow semi-conical structure.

[0032] In the above embodiment, preferably, the outer walls of the sampling tube 5 and the support rod 4 are evenly distributed with scales from bottom to top, the minimum scale is -10 cm, and the maximum scale is the total height of the sampling tube 5 and the support rod 4 minus 10 cm; because it is generally believed that when collecting samples at a selected position, it is necessary to collect samples within the range of ±10 cm at that location, so reading the scale on the sampling tube 5 is the maximum depth of the sample collected by the large-scale aerobic composting sampler; the surfaces of the inner and outer walls of the sampling tube 5 are smoothed to reduce the resistance when the sampling tube 5 is inserted into the pile body and weaken the disturbance to the pile body, and at the same time, avoid compression and accumulation of samples in the sampling tube 5.

[0033] In the above embodiment, preferably, the top of the support rod 4 is detachably connected to the fixed handle 2, which is a cylindrical structure with anti-skid patterns on its surface, and its function is to facilitate the staff to apply force to operate the large-scale aerobic composting sampler, including combining various components, moving the sampler, inserting the sampler into the selected pile sampling point, and disassembling the sampler. Specifically, the fixed handle 2 and the support rod 3 can be connected by a thread.

[0034] In the above embodiment, preferably, the control handle 1 is of cylindrical structure, the surface of the control handle 1 has anti-slip grooves, and the control handle 1 is detachably connected to the top of the connecting rod 3. Specifically, the control handle 1 and the connecting rod 3 can be connected by threads.

[0035] In the above embodiment, preferably, a limit buckle 12 for fixing the control handle 1 is provided on the fixed handle 2 to prevent the control handle 1 from rotating accidentally.

[0036] In the above embodiment, preferably, a sample transfer port is provided on the side wall of the sampling tube 5 located in the sampling half area 51 ; and the side tube cover 6 is movably fastened at the sample transfer port to facilitate the transfer of samples from the sampling tube 5 .

[0037] In the above embodiment, preferably, the connecting rod 3 is a solid cylindrical structure.

[0038] In the above embodiment, preferably, the control handle 1, the fixed handle 2, the connecting rod 3 and the supporting rod 4 can all be made of metal.

[0039] In the above embodiment, preferably, sampling tubes 5 and hollow support rods 4 of different specifications can be designed according to sampling requirements, and the hollow support rods 4 can be detachably arranged at the top of the sampling tube 5; if fixed-point sampling is required, a longer hollow support rod 4 and a shorter sampling tube 5 can be used, wherein the longer hollow support rod 4 adopts a split design, that is, it is composed of multiple hollow rod sections connected in series, and the two adjacent hollow rod sections are detachably connected (for example, threaded connection, snap connection and other detachable connection methods); if multiple spatial gradients are required to be sampled simultaneously, a longer sampling tube 5 and a shorter hollow support rod 4 can be used, wherein the longer sampling tube 5 adopts a split design, that is, it is composed of multiple tube sections connected in series, and the two adjacent tube sections are detachably connected (for example, threaded connection). In this way, on the one hand, it meets the needs of simultaneously or separately collecting compost samples at different depth gradients of the pile body, and on the other hand, it can facilitate the carrying of the longer sampling tube 5 or the hollow support rod 4.

[0040] Based on the sampler in any of the above embodiments, the present invention also provides a large-scale aerobic composting sampling method, comprising the following steps:

[0041] 1) driving the connecting rod 3 to rotate by controlling the handle 1 so that the blocking slice 8 is located on the opposite side of the injection port 7, and fixing the position of the control handle 1;

[0042] 2) Insert the sampling tube 5 into the pile body and stop after it reaches the selected depth. Then, drive the connecting rod 3 to rotate 180° through the control handle and fix the position of the control handle 1;

[0043] 3) Slightly shake the sampler to slightly solidify the pile at the insertion position to avoid large disturbance caused by the collapse of the pile when the sampler is pulled out, and then slowly pull the sampler out of the pile;

[0044] 4) Place the sampler horizontally on the ground, with the side provided with the side tube cover 6 facing upwards. Then, remove the side tube cover 6 and use a small spatula to transfer the required sample to the sample bag through the sample transfer port and store it in the freezer.

[0045] The present invention is only described with the above embodiments, and the structure, location and connection of each component can be changed. Based on the technical solution of the present invention, any improvement or equivalent transformation of individual components based on the principle of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A large-scale aerobic composting sampler, characterized in that: It includes a control handle, a connecting rod, a hollow supporting rod, a sampling barrel, an injection port and a blocking slice; the injection port is eccentrically opened on the bottom wall of the sampling barrel; the supporting rod is connected and arranged on the top wall of the sampling barrel; the connecting rod is movably inserted into the supporting rod and the sampling barrel, the top end of the connecting rod extends out of the supporting rod, and the bottom end of the connecting rod passes through the bottom wall of the sampling barrel and extends out of the sampling barrel; the control handle is connected to the top end of the connecting rod, the blocking slice is connected to the bottom end of the connecting rod, and the control handle can control the connecting rod to rotate, so as to drive the blocking slice to rotate to the bottom of the injection port and close the injection port.

2. A large-scale aerobic composting sampler as claimed in claim 1, characterized in that: The sampling tube has a sampling half area and an idle half area, and the sampling half area and the idle half area are separated by a partition; the injection port is located on the bottom wall of the sampling half area, and a drill bit is arranged on the bottom wall of the idle half area, and a gap for accommodating the blocking slice is left between the drill bit and the bottom wall of the sampling tube; the partition has a hollow cavity that passes through the top wall and the bottom wall of the sampling tube, and is connected with the hollow cavity of the support rod, and the connecting rod is movably inserted into the hollow cavity on the support rod and the partition.

3. A large-scale aerobic composting sampler as claimed in claim 1 or 2, characterized in that: The edge section of the injection port is V-shaped.

4. A large-scale aerobic composting sampler as claimed in claim 2, characterized in that: The stop piece is semi-disc-shaped and detachably connected to the bottom end of the connecting rod. The stop piece is located in the gap between the bottom wall of the idle half zone and the drill bit, and the edge section of the stop piece is V-shaped; the drill bit adopts a hollow semi-conical structure.

5. A large-scale aerobic composting sampler as claimed in claim 1, characterized in that: A fixed handle is detachably connected to the top end of the support rod, the fixed handle is in a cylindrical structure, and the surface of the fixed handle has anti-slip grooves; the control handle is in a cylindrical structure, and the control handle is detachably connected to the top end of the connecting rod; the surface of the control handle has anti-slip grooves.

6. A large-scale aerobic composting sampler as claimed in claim 5, characterized in that: A limit buckle for fixing the control handle is arranged on the fixed handle.

7. A large-scale aerobic composting sampler as claimed in claim 2, characterized in that: A sample transfer port is provided on the side wall of the sampling tube located in the sampling half area, and a side tube cover is movably buckled at the sample transfer port.

8. A large-scale aerobic composting sampler as claimed in claim 1, characterized in that: The outer walls of the sampling tube and the support rod are evenly distributed with scales from bottom to top, with the smallest scale being -10 cm and the largest scale being the total height of the sampling tube and the support rod minus 10 cm; the surfaces of the inner and outer walls of the sampling tube are smoothed.

9. A large-scale aerobic composting sampler as claimed in claim 1, characterized in that: The support rod is detachably mounted on the top of the sampling tube. The support rod is composed of multiple hollow rods connected in series, and two adjacent hollow rods are detachably connected. The sampling tube is composed of multiple tube sections connected in series, and two adjacent tube sections are detachably connected.

10. A sampling method based on the large-scale aerobic composting sampler according to any one of claims 1 to 9, characterized in that: The following steps are involved: 1) The connecting rod is driven to rotate by the control handle so that the blocking slice is located on the opposite side of the injection port, and the position of the control handle is fixed; 2) Insert the sampling tube into the pile body and stop when it reaches the selected depth. Then, drive the connecting rod to rotate 180° through the control handle and fix the position of the control handle; 3) Slightly shake the sampler to slightly solidify the pile at the insertion position, and then slowly pull the sampler out of the pile; 4) Place the sampler horizontally on the ground, use a small shovel to transfer the required sample to the sample bag through the sampling port, and freeze it.

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