A small composting device for experiments

Abstract

The present invention discloses a small composting device for experiments, comprising a reactor and an upper cover plate. The upper cover plate is installed on the upper end surface of the reactor. One end of the upper cover plate is rotatably connected to the reactor, and the other end is detachably snap-connected to the reactor through a buckle. A sampling mechanism is arranged inside the reactor. The sampling mechanism includes a sampling part, a connecting part, a lifting part and a seal. The sampling part includes an outer ring body, a discharging ring and a locking bolt. The discharging ring is installed inside the outer ring body and is rotatably connected to the outer ring body. One end of the locking bolt is installed inside the discharging ring, and the other end is embedded inside the outer ring body. Through the device proposed by the present invention, during the composting reaction process, fertilizers at different depths can be sampled, which is convenient for studying the composting conditions of materials at different levels, and the sampling can be completed without opening the cover plate as a whole, and no gas leakage inside the reactor will occur during the sampling process.

Description

Technical Field

[0001] The invention relates to the field of experimental equipment, in particular to a small-sized composting device for experiments. Background Art

[0002] Aerobic composting is an effective way to achieve the reduction, resource utilization and harmless treatment of organic waste. However, aerobic composting is a complex process involving physical, chemical and biological reactions. In addition to being related to the physical and chemical properties of the compost and the changes in the microbial community, aerobic composting is also directly related to various control conditions during the composting process. At present, the main factors affecting aerobic composting are moisture content, temperature, oxygen supply, carbon-nitrogen ratio, pH, conditioners, etc. The reasonable regulation of these parameters during aerobic composting is conducive to the composting process and can improve the quality of the compost.

[0003] In the laboratory stage, in order to better study the various influencing parameters in the aerobic composting process, it is necessary to set up a corresponding composting test device. Since a certain amount of harmful gases and irritating odors will be produced during the composting process, the existing experimental composting devices are mostly closed containers. If you want to take samples of the pile inside the reaction container at different stages, you need to open the container. This operation is likely to cause internal gas leakage, which is not only easy to cause pollution, but also destroys the original physical and chemical environment inside the reaction container, affecting the composting effect and causing the composting results to deviate from the expected situation. For this reason, we propose a small experimental composting device. Summary of the invention

[0004] The main purpose of the present invention is to provide a small-scale composting device for experiments. Through the sampling mechanism, fertilizers at different depths can be sampled, which is convenient for studying the composting conditions of materials at different levels. Sampling can be completed without opening the cover as a whole. During the sampling process, the gas inside the reactor will not leak out, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A small-scale composting device for experiments comprises a reactor and an upper cover plate, wherein the upper cover plate is mounted on the upper end surface of the reactor, one end of the upper cover plate is rotatably connected to the reactor, and the other end is detachably connected to the reactor through a buckle, and a sampling mechanism is arranged inside the reactor, wherein the sampling mechanism comprises a sampling part, a connecting part, a lifting part and a sealing member;

[0007] The sampling part comprises an outer ring body, a discharge ring and a locking bolt, wherein the discharge ring is installed inside the outer ring body and is rotatably connected to the outer ring body, and one end of the locking bolt is installed inside the discharge ring and the other end is embedded inside the outer ring body;

[0008] The upper and lower ends of the outer ring body are both equipped with connecting parts, the upper end of the connecting part installed on the upper end of the uppermost outer ring body is detachably connected to the sealing member, the connecting part and the sampling part form a straight tube structure with a closed lower end and an open upper end, and the lifting part slides inside the straight tube;

[0009] The lifting part includes a handle, a lifting rod, a sampler cover and a sampler. The lower end of the handle is fixedly connected to the lifting rod, and the other end of the lifting rod is fixedly connected to the sampler cover. The inner side of the sampler cover is fixedly connected to the sampler through a thread, and the sampler slides inside the connecting part and the discharge ring.

[0010] Furthermore, a slide groove with an arc of 90 degrees is provided in the middle of the inner end surface of the outer ring body, and the locking bolt slides inside the slide groove.

[0011] Furthermore, the discharge ring and the connecting part are provided with symmetrical through grooves at the same vertical position inside, and the outer end surface of the sampler is provided with protrusions at corresponding positions, and the protrusions of the sampler slide inside the through grooves of the discharge ring and the connecting part.

[0012] Furthermore, the outer ring body, the discharge ring and the sampler are all provided with sampling holes with the same aperture at the same position.

[0013] Furthermore, a gas distribution mechanism is provided inside the reactor, and the gas distribution mechanism includes a gas distribution disk, the upper end of the gas distribution disk is fixedly connected to a gas distribution rod by means of threads, the middle part of the lower end of the gas distribution disk is fixedly connected to a communicating vessel by means of threads, the other end of the communicating vessel is fixedly connected to a flow meter, the other end of the flow meter is fixedly connected to an air pump by means of a hose, and the air pump is electrically connected to a timing switch.

[0014] Furthermore, the gas distribution plate is a hollow structure, and the outer edge surface of the gas distribution rod is evenly provided with a plurality of inclined gas distribution holes.

[0015] Furthermore, a gas collection mechanism is fixedly connected to one side of the outer wall of the reactor, and the gas collection mechanism includes a collection box, an ammonia absorption bottle and a gas collecting bag are arranged inside the collection box, an ammonia absorption bottle is provided with an ammonia absorption liquid inside, the gas collecting bag is connected to the ammonia absorption bottle through a hose, and an absorption tube is fixedly connected to the bottle mouth of the ammonia absorption bottle, one end of the absorption tube extends into the lower side of the liquid surface of the ammonia absorption liquid, and the other end passes through the upper cover plate and extends into the interior of the reactor.

[0016] Furthermore, a temperature sensor is installed on the other side of the outer wall of the reactor, and the temperature sensors are evenly distributed inside the reactor.

[0017] Furthermore, the reactor is provided with a flipping mechanism, which includes a base, a limiter is provided on the inner side of the base, and the limiter is a cylinder with a plurality of countersunk holes evenly provided on the outer edge surface. One end of the limiter is embedded in the base and connected to the base through a limit pin, and the other end is fixedly connected to the outer end surface of the reactor.

[0018] Furthermore, the reactor is a double-layer cylindrical structure made of PVC material, and the interior of the reactor is filled with heat insulation cotton.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Through the sampling mechanism, when it is necessary to sample the material inside the reactor, the handle is pulled upward. When the sampler moves to the sampling position at the height to be sampled, the handle is turned to make the discharge ring drive the locking bolt to slide in the slide groove on the inner wall of the outer ring body. When the locking bolt slides from one end of the slide groove to the other end, the locking bolt contacts the inner wall of the slide groove, and the sampling hole of the discharge ring coincides with the sampling hole of the outer ring body. The fertilizer inside the reactor enters the sampler through the sampling hole. After the handle is turned in the opposite direction to reset the locking bolt, the handle is pulled upward to pull the sampler to the outside of the reactor to complete the sampling. This arrangement can sample fertilizers at different depths, which is convenient for studying the composting conditions of materials at different levels. Sampling can be completed without opening the cover as a whole, and the gas inside the reactor will not leak out during the sampling process.

[0021] (2) The air distribution mechanism is provided, and the air pumping time is set by a timing switch. Within the set time, the air pump operates to pump fresh air into the air distribution disk, and the air volume is measured by a flow meter. The air flows evenly from the air distribution disk to the inside of the air distribution rod installed at the upper end thereof, and flows out through the air distribution holes of the air distribution rod. The air distribution holes are inclined to prevent the fertilizer inside the reactor from entering the holes and avoid clogging. At the same time, multiple groups of air distribution rods are evenly arranged and distributed inside the reactor 1, so that the oxygen inside the reactor can be evenly ventilated, thereby improving the composting effect.

[0022] (3) Through the provided gas collection mechanism, the gas generated during the composting process enters the interior of the ammonia absorption bottle through the absorption tube, the ammonia therein is absorbed by the ammonia absorption liquid, and the remaining gas is collected into the gas collection bag through the hose, which can prevent harmful gases from entering the atmosphere and causing environmental pollution. At the same time, the composition of the ammonia absorption liquid and the gas composition inside the gas collection bag can be identified to understand the gas production during the composting process;

[0023] (4) The reactor can be flipped at any angle by means of a flip mechanism and a handle on the outer wall of the reactor. The reactor can be fixed by inserting a limit pin into the countersunk space of the limiter. This arrangement facilitates the shaking of the reactor and also facilitates the feeding and unloading of fertilizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a small-scale composting device for experiments of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of a sampling mechanism of a small-scale composting device for experiments of the present invention;

[0026] Figure 3 This is an exploded view of the overall structure of a sampling mechanism of a small-scale composting device for experiment of the present invention;

[0027] Figure 4 This is a structural exploded view of a lifting part of a small-scale composting device for experiment of the present invention;

[0028] Figure 5 This is a structural exploded view of a sampling portion of a small-scale composting device for experiments of the present invention;

[0029] Figure 6 It is a schematic diagram of the cross-sectional structure of the connection part of a small-scale composting device for experiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a gas distribution mechanism of a small-scale composting device for experiment of the present invention;

[0031] Figure 8 This is a structural exploded view of a gas distribution mechanism of an experimental small-scale composting device of the present invention;

[0032] Fig. 9 It is a schematic cross-sectional structure diagram of a gas distribution plate of an experimental small-scale composting device of the present invention;

[0033] Fig.10 It is a schematic diagram of the cross-sectional structure of an air distribution rod of an experimental small-scale composting device of the present invention;

[0034] Fig.11 This is a schematic diagram of the installation structure of a turning mechanism of a small-scale experimental composting device of the present invention;

[0035] Fig.12 The present invention is a schematic structural diagram of a gas collection mechanism of a small-scale experimental composting device.

[0036] In the figure:

[0037] 1. Reactor; 2. Upper cover plate;

[0038] 3. Sampling organization;

[0039] 31. sampling part; 311. outer ring body; 312. discharge ring; 313. locking bolt;

[0040] 32. Connecting part;

[0041] 33. lifting part; 331. handle; 332. lifting rod; 333. sampler cover; 334. sampler; 34. sealing member;

[0042] 41. Gas distribution panel; 42. Gas distribution rod; 43. Connecting vessel; 44. Flow meter; 45. Air pump; 46. Timer switch;

[0043] 51. Collection box; 52. Ammonia absorption bottle; 53. Gas collection bag; 54. Absorption tube; 55. Ammonia absorption liquid;

[0044] 6. Temperature sensor;

[0045] 7. Flipping mechanism; 71. Base; 72. Stopper;

[0046] 8. Thermal insulation cotton. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific implementation methods of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. Example

[0048] like Figure 1-6 As shown, a small-scale composting device for experiment comprises a reactor 1 and an upper cover plate 2, wherein the upper cover plate 2 is mounted on the upper end surface of the reactor 1, one end of the upper cover plate 2 is rotatably connected to the reactor 1, and the other end is detachably connected to the reactor 1 through a buckle, and a sampling mechanism 3 is arranged inside the reactor 1, and the sampling mechanism 3 comprises a sampling portion 31, a connecting portion 32, a lifting portion 33 and a sealing member 34;

[0049] The sampling part 31 includes an outer ring body 311, a discharge ring 312 and a locking bolt 313. The discharge ring 312 is installed inside the outer ring body 311 and is rotatably connected to the outer ring body 311. One end of the locking bolt 313 is installed inside the discharge ring 312, and the other end thereof is embedded inside the outer ring body 311.

[0050] The outer ring body 311 is provided with a connecting portion 32 at both the upper and lower ends. The upper end of the connecting portion 32 installed at the upper end of the uppermost outer ring body 311 is detachably connected to the sealing member 34. The connecting portion 32 and the sampling portion 31 form a straight tube structure with a closed lower end and an open upper end. The lifting portion 33 slides inside the straight tube.

[0051] The lifting part 33 includes a handle 331, a lifting rod 332, a sampler cover 333 and a sampler 334. The lower end of the handle 331 is fixedly connected to the lifting rod 332, and the other end of the lifting rod 332 is fixedly connected to the sampler cover 333. The inner side of the sampler cover 333 is fixedly connected to the sampler 334 through a thread, and the sampler 334 slides inside the connecting part 32 and the discharge ring 312.

[0052] A slide groove with an arc of 90 degrees is provided in the middle of the inner end surface of the outer ring body 311, and the locking bolt 313 slides inside the slide groove.

[0053] The discharge ring 312 and the connecting portion 32 are provided with symmetrical through grooves at the same vertical position inside, and the outer end surface of the sampler 334 is provided with a protrusion at a corresponding position, and the protrusion of the sampler 334 slides inside the through grooves of the discharge ring 312 and the connecting portion 32.

[0054] The outer ring body 311 , the discharge ring 312 and the sampler 334 are all provided with sampling holes with the same aperture at the same position.

[0055] The reactor 1 is a double-layer cylindrical structure made of PVC material, and the interior of the reactor 1 is filled with heat insulation cotton 8.

[0056] By adopting the above technical solution: when it is necessary to sample the material inside the reactor 1, the handle 331 of the lifting part 33 is pulled upward, and the handle 331 drives the sampler 334 to move upward along the through groove of the discharge ring 312 and the connecting part 32 through the lifting rod 332. When the sampler 334 moves to the position of the sampling part 31 at the height to be sampled, the protrusion on the outer wall of the sampler 334 is engaged with the through groove of the discharge ring 312, and the handle 331 is turned to rotate the discharge ring 312, and the locking bolt 313 is driven to lock the inner wall of the outer ring body 311. When the locking bolt 313 slides from one end of the slide to the other end, the locking bolt 313 conflicts with the inner wall of the slide, and at the same time, the sampling hole of the discharge ring 312 coincides with the sampling hole of the outer ring body 311, and the fertilizer inside the reactor 1 enters the sampler 334 through the sampling hole. After the sampling is completed, the handle 331 is rotated in the opposite direction to reset the locking bolt 313, and the discharge ring 312 is rotated to cover the sampling hole of the outer ring body 311, and the handle 331 is pulled upward to lift the sampler 334 to the outside of the reactor 1 to complete the sampling. Example

[0057] like Figure 1 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, a small-scale composting device for experiment comprises a reactor 1 and an upper cover plate 2, wherein the upper cover plate 2 is mounted on the upper end surface of the reactor 1, one end of the upper cover plate 2 is rotatably connected to the reactor 1, and the other end is detachably connected to the reactor 1 through a buckle, and a sampling mechanism 3 is arranged inside the reactor 1, and the sampling mechanism 3 comprises a sampling portion 31, a connecting portion 32, a lifting portion 33 and a sealing member 34;

[0058] The sampling part 31 includes an outer ring body 311, a discharge ring 312 and a locking bolt 313. The discharge ring 312 is installed inside the outer ring body 311 and is rotatably connected to the outer ring body 311. One end of the locking bolt 313 is installed inside the discharge ring 312, and the other end thereof is embedded inside the outer ring body 311.

[0059] The outer ring body 311 is provided with a connecting portion 32 at both the upper and lower ends. The upper end of the connecting portion 32 installed at the upper end of the uppermost outer ring body 311 is detachably connected to the sealing member 34. The connecting portion 32 and the sampling portion 31 form a straight tube structure with a closed lower end and an open upper end. The lifting portion 33 slides inside the straight tube.

[0060] The lifting part 33 includes a handle 331, a lifting rod 332, a sampler cover 333 and a sampler 334. The lower end of the handle 331 is fixedly connected to the lifting rod 332, and the other end of the lifting rod 332 is fixedly connected to the sampler cover 333. The inner side of the sampler cover 333 is fixedly connected to the sampler 334 through a thread, and the sampler 334 slides inside the connecting part 32 and the discharge ring 312.

[0061] A gas distribution mechanism is provided inside the reactor 1, and the gas distribution mechanism includes a gas distribution plate 41, the upper end of the gas distribution plate 41 is fixedly connected to a gas distribution rod 42 by means of threads, the middle part of the lower end of the gas distribution plate 41 is fixedly connected to a connecting vessel 43 by means of threads, the other end of the connecting vessel 43 is fixedly connected to a flow meter 44, the other end of the flow meter 44 is fixedly connected to an air pump 45 by means of a hose, and the air pump 45 is electrically connected to a timing switch 46.

[0062] The air distribution plate 41 is a hollow structure, and the outer edge surface of the air distribution rod 42 is evenly provided with a plurality of inclined air distribution holes.

[0063] A temperature sensor 6 is installed on the other side of the outer wall of the reactor 1 , and the temperature sensors 6 are evenly distributed inside the reactor 1 .

[0064] The reactor 1 is a double-layer cylindrical structure made of PVC material, and the interior of the reactor 1 is filled with heat insulation cotton 8.

[0065] By adopting the above technical scheme: an air distribution mechanism is provided inside the reactor 1, and the air pump 45 of the air distribution mechanism is connected to the timing switch 46. The pumping time can be set by the timing switch 46. Within the set time, the air pump 45 runs to pump fresh air into the air distribution disk 41, and the pumping air volume is measured by the flow meter 44. The air flows evenly from the air distribution disk 41 to the inside of the air distribution rod 42 installed at the upper end thereof, and flows out through the air distribution holes of the air distribution rod 42. The air distribution holes are inclined to prevent the fertilizer inside the reactor 1 from entering the holes and avoid blockage. At the same time, multiple groups of air distribution rods 42 are evenly arranged and distributed inside the reactor 1, so that the oxygen inside the reactor 1 can be uniformly ventilated, thereby improving the composting effect. A temperature sensor 6 is installed on the other side of the outer wall of the reactor 1, which can monitor the temperature change of the internal fertilizer in real time. The reactor 1 is a double-layer cylindrical structure made of PVC material, and the inside of the reactor 1 is filled with heat insulation cotton 8. This arrangement can reduce the heat exchange between the inside of the reactor 1 and the outside world, thereby improving the composting effect. Example

[0066] like Figure 1 and Fig.12 As shown, a small-scale composting device for experiment comprises a reactor 1 and an upper cover plate 2, wherein the upper cover plate 2 is mounted on the upper end surface of the reactor 1, one end of the upper cover plate 2 is rotatably connected to the reactor 1, and the other end is detachably connected to the reactor 1 through a buckle, and a sampling mechanism 3 is arranged inside the reactor 1, and the sampling mechanism 3 comprises a sampling portion 31, a connecting portion 32, a lifting portion 33 and a sealing member 34;

[0067] The sampling part 31 includes an outer ring body 311, a discharge ring 312 and a locking bolt 313. The discharge ring 312 is installed inside the outer ring body 311 and is rotatably connected to the outer ring body 311. One end of the locking bolt 313 is installed inside the discharge ring 312, and the other end thereof is embedded inside the outer ring body 311.

[0068] The outer ring body 311 is provided with a connecting portion 32 at both the upper and lower ends. The upper end of the connecting portion 32 installed at the upper end of the uppermost outer ring body 311 is detachably connected to the sealing member 34. The connecting portion 32 and the sampling portion 31 form a straight tube structure with a closed lower end and an open upper end. The lifting portion 33 slides inside the straight tube.

[0069] The lifting part 33 includes a handle 331, a lifting rod 332, a sampler cover 333 and a sampler 334. The lower end of the handle 331 is fixedly connected to the lifting rod 332, and the other end of the lifting rod 332 is fixedly connected to the sampler cover 333. The inner side of the sampler cover 333 is fixedly connected to the sampler 334 through a thread, and the sampler 334 slides inside the connecting part 32 and the discharge ring 312.

[0070] A gas collection mechanism is fixedly connected to one side of the outer wall of the reactor 1, and the gas collection mechanism includes a collection box 51. An ammonia absorption bottle 52 and a gas collecting bag 53 are arranged inside the collection box 51. An ammonia absorption liquid 55 is arranged inside the ammonia absorption bottle 52. The gas collecting bag 53 is connected to the ammonia absorption bottle 52 through a hose. An absorption tube 54 is fixedly connected to the bottle mouth of the ammonia absorption bottle 52. One end of the absorption tube 54 extends into the lower side of the liquid surface of the ammonia absorption liquid 55, and the other end penetrates the upper cover plate 2 and extends into the interior of the reactor 1.

[0071] A temperature sensor 6 is installed on the other side of the outer wall of the reactor 1 , and the temperature sensors 6 are evenly distributed inside the reactor 1 .

[0072] The reactor 1 is a double-layer cylindrical structure made of PVC material, and the interior of the reactor 1 is filled with heat insulation cotton 8.

[0073] By adopting the above technical solution, some harmful gases, such as ammonia and methane, are generated during the composting process. These harmful gases gather inside the reactor 1. Through the provided gas collection mechanism, the harmful gases enter the ammonia absorption bottle 52 through the absorption tube 54, where the ammonia is absorbed by the ammonia absorption liquid 55, and the remaining gases are collected into the gas collecting bag 53 through the hose. This can prevent the harmful gases from entering the atmosphere and causing environmental pollution. At the same time, the composition of the ammonia absorption liquid 55 and the gas composition inside the gas collecting bag 53 can be identified to obtain the gas production during the composting process. Example

[0074] like Figure 1 and Fig.11 As shown, a small-scale composting device for experiment comprises a reactor 1 and an upper cover plate 2, wherein the upper cover plate 2 is mounted on the upper end surface of the reactor 1, one end of the upper cover plate 2 is rotatably connected to the reactor 1, and the other end is detachably connected to the reactor 1 through a buckle, and a sampling mechanism 3 is arranged inside the reactor 1, and the sampling mechanism 3 comprises a sampling portion 31, a connecting portion 32, a lifting portion 33 and a sealing member 34;

[0075] The sampling part 31 includes an outer ring body 311, a discharge ring 312 and a locking bolt 313. The discharge ring 312 is installed inside the outer ring body 311 and is rotatably connected to the outer ring body 311. One end of the locking bolt 313 is installed inside the discharge ring 312, and the other end thereof is embedded inside the outer ring body 311.

[0076] The outer ring body 311 is provided with a connecting portion 32 at both the upper and lower ends. The upper end of the connecting portion 32 installed at the upper end of the uppermost outer ring body 311 is detachably connected to the sealing member 34. The connecting portion 32 and the sampling portion 31 form a straight tube structure with a closed lower end and an open upper end. The lifting portion 33 slides inside the straight tube.

[0077] The lifting part 33 includes a handle 331, a lifting rod 332, a sampler cover 333 and a sampler 334. The lower end of the handle 331 is fixedly connected to the lifting rod 332, and the other end of the lifting rod 332 is fixedly connected to the sampler cover 333. The inner side of the sampler cover 333 is fixedly connected to the sampler 334 through a thread, and the sampler 334 slides inside the connecting part 32 and the discharge ring 312.

[0078] A temperature sensor 6 is installed on the other side of the outer wall of the reactor 1 , and the temperature sensors 6 are evenly distributed inside the reactor 1 .

[0079] The reactor 1 is provided with a flipping mechanism, which includes a base 71. A limiter 72 is provided on the inner side of the base 71. The limiter 72 is a cylinder with a plurality of countersunk holes evenly provided on the outer edge surface. One end of the limiter 72 is embedded in the base 71 and is connected to the base 71 through a limit pin, and the other end is fixedly connected to the outer end surface of the reactor 1.

[0080] The reactor 1 is a double-layer cylindrical structure made of PVC material, and the interior of the reactor 1 is filled with heat insulation cotton 8.

[0081] By adopting the above technical solution: the reactor 1 is provided with a flipping mechanism, and the reactor 1 can be flipped at any angle through the handle on the outer wall. The reactor 1 can be fixed by inserting the limit pin into the countersunk space of the limiter 72. This arrangement facilitates the shaking treatment of the reactor 1 and also facilitates the feeding and unloading of fertilizers.

[0082] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A small composting device for experiments, comprising a reactor (1) and an upper cover plate (2). The upper cover plate (2) is installed on the upper end face of the reactor (1). One end of the upper cover plate (2) is rotatably connected to the reactor (1), and the other end is detachably snap-connected to the reactor (1) through a buckle. Characterized in that: A sampling mechanism (3) is arranged inside the reactor (1). The sampling mechanism (3) comprises a sampling part (31), a connecting part (32), a lifting part (33) and a seal (34); The sampling part (31) comprises an outer ring body (311), a discharging ring (312) and a locking bolt (313). The discharging ring (312) is installed inside the outer ring body (311) and is rotatably connected to the outer ring body (311). One end of the locking bolt (313) is installed inside the discharging ring (312), and the other end thereof is embedded inside the outer ring body (311). Connecting parts (32) are installed at both the upper end and the lower end of the outer ring body (311). The upper end of the connecting part (32) installed at the upper end of the uppermost outer ring body (311) is detachably connected to the seal (34). The connecting part (32) and the sampling part (31) form a straight cylindrical structure with a closed lower end and an open upper end, and the lifting part (33) slides inside the straight cylinder. The lifting part (33) comprises a handle (331), a lifting rod (332), a sampler cover (333) and a sampler (334). The lower end of the handle (331) is fixedly connected to the lifting rod (332). The other end of the lifting rod (332) is fixedly connected to the sampler cover (333). The inner side of the sampler cover (333) is fixedly connected to the sampler (334) through a thread. The sampler (334) slides inside the connecting part (32) and the discharging ring (312). Sampling holes with the same aperture are formed at the same position on the outer ring body (311), the discharging ring (312) and the sampler (334).

2. The small composting device for experiments according to claim 1, Characterized in that: A chute with a 90-degree arc is arranged in the middle of the inner end face of the outer ring body (311), and the locking bolt (313) slides inside the chute.

3. The small composting device for experiments according to claim 1, Characterized in that: Symmetrical through grooves are formed at the same vertical position inside the discharging ring (312) and the connecting part (32). A protrusion is formed at the corresponding position on the outer end face of the sampler (334), and the protrusion of the sampler (334) slides inside the through grooves of the discharging ring (312) and the connecting part (32).

4. The small composting device for experiments according to claim 1, Characterized in that: Inside the reactor (1), there is a gas distribution mechanism, which includes a gas distribution plate (41). The upper end of the gas distribution plate (41) is fixedly connected with a gas distribution rod (42) by threads. The middle part of the lower end of the gas distribution plate (41) is fixedly connected with a connector (43) by threads. The other end of the connector (43) is fixedly connected with a flowmeter (44). The other end of the flowmeter (44) is fixedly connected with an air pump (45) through a hose. The air pump (45) is electrically connected with a timing switch (46).

5. The small-scale composting device for experiments according to claim 4, characterized in that: The gas distribution plate (41) is of a hollow structure, and a number of inclined gas distribution holes are evenly arranged on the outer edge surface of the gas distribution rod (42).

6. The small-scale composting device for experiments according to claim 1, characterized in that: On one side of the outer wall of the reactor (1), there is a gas collection mechanism, which includes a collection box (51). Inside the collection box (51), there is an ammonia absorption bottle (52) and a gas collection bag (53). Inside the ammonia absorption bottle (52), there is an ammonia absorption liquid (55). The gas collection bag (53) is connected with the ammonia absorption bottle (52) through a hose. At the bottle mouth of the ammonia absorption bottle (52), there is a fixed absorption tube (54). One end of the absorption tube (54) extends into the lower side of the liquid surface of the ammonia absorption liquid (55), and the other end penetrates through the upper cover plate (2) and extends into the reactor (1).

7. The small-scale composting device for experiments according to claim 1, characterized in that: On the other side of the outer wall of the reactor (1), a temperature sensor (6) is installed, and the temperature sensors (6) are evenly distributed inside the reactor (1).

8. The small-scale composting device for experiments according to claim 1, characterized in that: The reactor (1) is provided with a turnover mechanism, which includes a base (71). Inside the base (71), there is a limiter (72). The limiter (72) is a cylinder with a number of countersunk holes evenly arranged on its outer edge surface. One end of the limiter (72) is embedded inside the base (71) and is connected with the base (71) through a limit pin, and the other end is fixedly connected with the outer end surface of the reactor (1).

9. The small-scale composting device for experiments according to claim 1, characterized in that: The reactor (1) is a double-layer cylindrical structure made of PVC material, and the inside of the reactor (1) is filled with heat insulation cotton (8).

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