Downdraft soil air dryer

Abstract

The utility model relates to a downdraft type soil air dryer which comprises a shell, a box cover detachably connected to the upper portion of the shell and a vertical frame connected to the lower portion of the shell and used for supporting the shell, an air outlet is formed in the side of the center of the vertical frame, and a storage plate used for containing materials is arranged in the shell. An air outlet is formed in the lower portion of the interior of the shell, a fan communicated with the air outlet is arranged on the lower portion of the interior of the shell, an air collecting cover is arranged above the fan and located in the shell, an air inlet is formed in the upper portion of the box cover, a taper hole communicated with the air inlet is formed in the center of the box cover, and an air guide cavity used for communicating the taper hole with the shell is formed in the box cover. The center of the taper hole is detachably connected with an air filtering cylinder, and a heater is arranged in the center of the air filtering cylinder; according to the air dryer, the air circulation effect is improved through downdraft type wind power absorption, the problem that a soil sample is blown away due to strong wind power is avoided, the soil sample is rapidly air-dried through circular operation of wind power, and the sufficiency and uniformity of air drying of the soil are effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to an air dryer, in particular to a down-suction soil air dryer. Background Art

[0002] The downdraft soil air drying box is a device used for rapid air drying of soil samples, and is commonly used in laboratory and field research such as soil moisture analysis and soil moisture content testing. However, the test of conventional air drying projects is prone to the entry of external dust, foreign matter, or humid acid-base gases, which may affect the test results. For example, conventional air drying boxes use natural air drying or upward air drying. The natural air drying method often takes a long time, and is more likely to cause contamination of soil samples waiting to be tested due to the external environment. The upward air blowing method is easy to blow away soil and other samples, resulting in inaccurate testing. In addition, the upward air blowing method makes it difficult for air to circulate inside the box, reducing the air drying efficiency of soil samples and making it difficult to ensure the test results of soil samples. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the prior art, thereby providing a down-draft soil air dryer which effectively improves the air-drying efficiency of soil samples, avoids detection errors caused by external foreign matter, and effectively ensures the detection accuracy of soil samples.

[0004] The utility model discloses a down-suction soil air dryer, comprising a shell, a box cover detachably connected to the top of the shell, and a stand connected to the bottom of the shell for supporting the shell, and an air outlet is arranged on the side of the center of the stand, a storage plate for placing materials is arranged inside the shell, a fan connected to the air outlet is arranged below the inside of the shell, an air collecting hood connected to the inside of the shell is arranged above the fan and located inside the shell, an air inlet is arranged above the box cover, a conical hole connected to the air inlet is arranged in the center of the box cover, an air guide cavity for connecting the conical hole and the shell is arranged inside the box cover, a filter cylinder is detachably connected to the center of the conical hole, and a heater is arranged in the center of the filter cylinder.

[0005] Preferably, a bottom plate for sealing the conical hole is connected to the bottom of the box cover, the filter cylinder is connected to the center of the bottom plate, and a card hole and a wire hole are respectively provided on the surface of the bottom plate. The bottom plate is used to seal the bottom of the conical hole so that air can enter the shell through the filter cylinder, and the card hole and the wire hole are used to connect the heater and power it.

[0006] Preferably, a core hole is provided in the center of the air filter cylinder, and the heater is provided in the center of the core hole. The heater includes a fixing plate and a heating tube connected to the center of the fixing plate. A vertical pole is connected below the fixing plate, and a clamping block which is snap-fitted with the clamping hole is connected at the lower end of the vertical pole, so that the heating tube can be connected in a surrounding manner in the center of the fixing plate. The vertical pole is installed on the bottom plate by clamping the clamping block with the clamping hole to support the fixing plate, so that the heating tube can be erected in the center of the air filter cylinder.

[0007] Preferably, the air filter cylinder and the tapered hole are both of conical structures and cooperate with each other, and a rubber ring with an interference fit with the tapered hole is connected to the top of the air filter cylinder, so that the air filter cylinder can be sealed in the center of the tapered hole through the rubber ring, and the conical structure of the air filter cylinder and the tapered hole ensure that the air filter cylinder can be reasonably embedded in the tapered hole, avoiding the problem of reduced air circulation efficiency caused by the air filter cylinder being embedded in the shell, and the conical structure of the tapered hole is that the upper aperture is larger than the lower aperture.

[0008] Preferably, a clamping groove is provided at the bottom of the box cover and is mutually connected with the upper edge of the shell, and the air guide cavity is provided in the center of the box cover so that the box cover can be embedded in the top of the shell through the clamping groove, and the air inlet of the box cover is connected with the inside of the shell through the air guide cavity.

[0009] Preferably, a first through hole is provided on the side of the center of the box cover facing the conical hole, and a second through hole is provided on the side below the box cover facing the inside of the shell. The first through hole and the second through hole are both connected to the air guide cavity, so that the air entering through the air inlet passes through the air filter cylinder inside the conical hole and enters the inside of the shell in sequence through the first through hole and the second through hole, thereby preventing the air from directly entering the shell from the center of the box cover and directly blowing the soil sample, thereby reducing the air pressure that the soil sample can directly contact.

[0010] Preferably, the inner surface of the shell is connected with a protrusion for supporting a storage plate, and two or more ventilation holes are arranged in the center of the storage plate. A guardrail is connected around the outer side of the storage plate to allow the soil sample to be placed in the center of the storage plate, and the ventilation holes are used to increase the air circulation inside the shell. The guardrail can prevent the user from extracting the storage plate and causing the soil sample to fall off.

[0011] Preferably, an engine room is provided at the lower part of the shell, the wind collecting hood is placed above the engine room and fits with the inner surface of the shell, the fan is connected to the inside of the engine room, and a wind direction cover connected to the air outlet is connected below the fan, an elastic ring for fitting and sealing on the inner surface of the shell is connected above the wind collecting hood, an air guide port connected to the fan is provided below the wind collecting hood, and an air guide strip is connected around the inner surface of the wind collecting hood so that the air absorbed by the fan can be collected through the wind collecting hood, so that the air inside the shell can enter through the wind collecting hood, thereby increasing the air suction effect of the fan, and at the same time, the air absorbed by the fan is discharged through the guidance of the wind direction cover, and the setting of the elastic ring increases the air tightness of the wind collecting hood, effectively improving the wind collecting effect of the wind collecting hood, and at the same time, the absorbed air is guided in a corresponding circulation through the wind guide strips arranged on the surface of the wind collecting hood, thereby driving the circulation of the air inside the shell.

[0012] Preferably, a limit bar connected to the inner surface of the shell is arranged above the air collecting hood, and a supporting net and isolation cotton covering the air collecting hood are arranged above the limit bar, so that the air collecting hood can be limited and fixed by the limit bar to avoid the problem of the air collecting hood deviating up and down. At the same time, soil samples that may be absorbed in the air can be isolated by the support net and isolation cotton to prevent powder and dust particles such as soil samples from being discharged from the air dryer.

[0013] The beneficial effects of the utility model are as follows: since the fan is arranged below the shell body, and the air inlet is arranged in the center of the box cover and above the shell body, air can pass from top to bottom to dry the soil, thus avoiding the problem of excessive wind pressure on the soil sample during drying caused by the conventional upper blowing air drying method, and an air filter cylinder is arranged in the cone hole in the center of the box cover, and a heater is arranged inside the air filter cylinder, so that the air entering through the air inlet can be heated by the heater and filtered by the air filter cylinder, thus avoiding the possibility that dust, foreign matter, moisture or acid-base liquid contained in the outside air can enter the shell body and contaminate the soil sample, avoiding the detection error of the soil sample caused by the entry of foreign matter from the outside, ensuring the detection accuracy of the soil after air drying, and the heated air increases the speed of drying the soil sample during air circulation, thereby improving the air drying efficiency of the soil sample. The air inlet is connected with the inside of the shell through the filter wind tube and the air guide cavity, so that the air entering from the air inlet passes through the air guide cavity and enters along the side of the shell, avoiding the problem of excessive wind pressure on the soil surface caused by direct air blowing on the soil sample, so as to ensure the integrity of the soil and the uniformity of internal air drying; at the same time, an air collecting hood connected with the inside of the shell is also arranged above the fan, and the air collecting hood is attached to the inner surface of the shell, and the inner surface of the air collecting hood is surrounded by air guide strips, so that the air inside the shell can be collected through the air collecting hood for the discharge of the fan, thereby improving the air suction and exhaust effect of the fan, and facilitating the rapid drying of the soil samples placed inside the shell, and the air guide strips on the surface of the air collecting hood allow the air absorbed and discharged by the fan to be circulated and guided accordingly, thereby driving the air inside the shell to circulate, effectively improving the air drying effect of the soil samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of a downdraft soil air dryer of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a filter air cylinder in a downdraft soil air dryer of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a heater in a downdraft soil air dryer of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of an air collecting hood in a downdraft soil air dryer of the utility model;

[0019] Figure 5 The utility model is a schematic diagram of the structure of a storage plate in a downdraft soil air dryer. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] like Figures 1 to 5 A downdraft soil dryer is shown, comprising a shell 3, a box cover 1 detachably connected to the top of the shell 3, and a stand 6 connected to the bottom of the shell 3 for supporting the shell 3, and an air outlet 61 is arranged on the side of the center of the stand 6, the shell 3 is provided with a storage plate 31 for placing materials, a fan 5 connected to the air outlet 61 is arranged below the shell 3, and an air collecting hood 4 connected to the shell 3 is arranged above the fan 5 and located inside the shell 3, an air inlet 14 is arranged above the box cover 1, a conical hole 11 connected to the air inlet 14 is arranged in the center of the box cover 1, and an air guide chamber 12 for connecting the conical hole 11 and the shell 3 is arranged inside the box cover 1, a filter cylinder 2 is detachably connected to the center of the conical hole 11, and a heater 21 is arranged in the center of the filter cylinder 2.

[0022] A bottom plate 22 for sealing the conical hole 11 is connected to the bottom of the box cover 1, the filter cylinder 2 is connected to the center of the bottom plate 22, and a clamping hole 221 and a wire hole 222 are respectively provided on the surface of the bottom plate 22. The bottom of the conical hole 11 is sealed through the bottom plate 22 so that air can enter the shell 3 through the filter cylinder 2, and the heater 21 is connected and powered through the clamping hole 221 and the wire hole 222.

[0023] A core hole 23 is provided in the center of the air filter cylinder 2, and the heater 21 is provided in the center of the core hole 23. The heater 21 includes a fixing plate 212 and a heating tube 211 connected to the center of the fixing plate 212. A vertical rod 213 is connected below the fixing plate 212, and a clamping block 214 is connected at the lower end of the vertical rod 213 to be snap-fitted with the clamping hole 221, so that the heating tube 211 can be connected around the center of the fixing plate 212, and the vertical rod 213 is installed on the bottom plate 22 by clamping the clamping block 214 with the clamping hole 221 to support the fixing plate 212, so as to facilitate the heating tube 211 to stand upright in the center of the air filter cylinder 2.

[0024] The air filter cylinder 2 and the tapered hole 11 are both tapered structures and cooperate with each other, and a rubber ring 24 with an interference fit with the tapered hole 11 is connected to the top of the air filter cylinder 2, so that the air filter cylinder 2 can be sealed in the center of the tapered hole 11 through the rubber ring 24, and the tapered structure of the air filter cylinder 2 and the tapered hole 11 ensures that the air filter cylinder 2 can be reasonably embedded in the tapered hole 11, avoiding the problem of reduced air circulation efficiency caused by the air filter cylinder 2 being embedded in the housing 3, and the tapered structure of the tapered hole 11 is that the upper aperture is larger than the lower aperture.

[0025] A clamping groove 13 is provided at the bottom of the box cover 1 and is matched with the upper side of the shell 3. The air guide cavity 12 is provided at the center of the box cover 1 so that the box cover 1 can be embedded in the upper side of the shell 3 through the clamping groove 13, and the air inlet 14 of the box cover 1 is connected with the inside of the shell 3 through the air guide cavity 12.

[0026] A first through hole (not marked) is provided on the side of the center of the box cover 1 facing the tapered hole 11, and a second through hole (not marked) is provided on the side below the box cover 1 facing the inside of the shell 3. The first through hole and the second through hole are both connected to the air guide cavity 12, so that the air entering through the air inlet 14 passes through the air filter cylinder 2 inside the tapered hole 11 and enters the inside of the shell 3 in sequence through the first through hole and the second through hole, thereby preventing the air from directly entering the shell 3 from the center of the box cover 1 and directly blowing the soil sample, thereby reducing the air pressure that the soil sample can directly contact.

[0027] The inner surface of the shell 3 is connected to a protrusion 34 for supporting the storage plate 31. The storage plate 31 is provided with more than two ventilation holes 311 in the center. The storage plate 31 is surrounded by a guardrail 312, so that the soil sample can be placed in the center of the storage plate 31. The ventilation holes 311 increase the air circulation inside the shell 3, and the guardrail 312 prevents the user from extracting the storage plate 31 and causing the soil sample to fall off.

[0028] The lower part of the shell 3 is provided with a machine room 52, the wind collecting cover 4 is placed above the machine room 52 and fits with the inner surface of the shell 3, the fan 5 is connected to the inside of the machine room 52, and the lower part of the fan 5 is connected with a wind direction cover 51 connected with the air outlet 61, the upper part of the wind collecting cover 4 is connected with an elastic ring 43 for fitting and sealing on the inner surface of the shell 3, the lower part of the wind collecting cover 4 is provided with an air guide port 41 connected with the fan 5, and the inner surface of the wind collecting cover 4 is surrounded by an air guide strip 42, so that the fan 5 The air absorbed by the fan 5 can be collected by the wind collecting hood 4, so that the air inside the shell 3 can enter through the wind collecting hood 4, thereby increasing the air suction effect of the fan 5. At the same time, the air absorbed by the fan 5 is discharged through the guidance of the wind direction cover 51. The setting of the elastic ring 43 increases the air tightness of the wind collecting hood 4, effectively improving the air collection effect of the wind collecting hood 4. At the same time, the air guide strips 42 set on the surface of the wind collecting hood 4 allow the absorbed air to be circulated and guided accordingly, thereby driving the circulation of the air inside the shell 3.

[0029] A limiting bar 35 connected to the inner surface of the shell 3 is arranged above the air collecting hood 4, and a supporting net 33 and an isolating cotton 32 covering the air collecting hood 4 are arranged above the limiting bar 35, so that the air collecting hood 4 can be limited and fixed by the limiting bar 35 to avoid the problem of the air collecting hood 4 shifting up and down. At the same time, the soil samples that may be absorbed in the air are isolated by the supporting net 33 and the isolating cotton 32 to prevent the soil samples and other powder and dust particles from being discharged from the air dryer.

[0030] The downward suction soil dryer can open the box cover 1 and place the soil sample on the storage plate 31, place the storage plate 31 on the protrusion 34 inside the shell 3, and allow the edge of the upper surface of the shell 3 to be embedded in the clamping groove 13 below the box cover 1, so that the box cover 1 is sealed above the shell 3, and the fan 5 is fixed in the machine room 52 below the shell 3, so that the wind direction cover 51 connected to the lower end of the fan 5 is located in the center of the stand 6 and connected to the air outlet 61, and the wind collecting hood 4 above the fan 5 is located in the shell 3, so that the fan 5 can connect the shell 3 with the outside world through the wind collecting hood 4 and the wind direction cover 51, and at the same time, the wind collecting hood 4 is limitedly supported by the machine room 52 through the limit strip 35, the support net 33 is placed on the limit strip 35, and the isolation cotton 32 is placed on the support net 3 3 and complete the covering of the supporting net 33, so that the operation of the fan 5 collects the air inside the shell 3 and guides it to the wind direction cover 51 through the wind collecting hood 4, and the gas inside the shell 3 is guided to be discharged from the shell 3 through the wind direction cover 51, and the outside air is sucked into the filter cylinder 2 through the air inlet 14. At the same time, the air is dehumidified and filtered by the filter cylinder 2, and the air is heated by the heater 21 in the center of the filter cylinder 2, so that the air is heated and purified before being sucked into the shell 3, thereby ensuring the purity of the soil sample to be dried inside the shell 3, and the soil sample powder dust that may be caused by the air inhalation can be isolated by the isolation cotton 32 above the wind collecting hood 4, thereby avoiding the problems of gram weight deviation caused by the discharge of the soil sample.

[0031] The beneficial effects of the utility model are as follows: since the fan is arranged below the shell body, and the air inlet is arranged in the center of the box cover and above the shell body, air can pass from top to bottom to dry the soil, thus avoiding the problem of excessive wind pressure on the soil sample during drying caused by the conventional upper blowing air drying method, and an air filter cylinder is arranged in the cone hole in the center of the box cover, and a heater is arranged inside the air filter cylinder, so that the air entering through the air inlet can be heated by the heater and filtered by the air filter cylinder, thus avoiding the possibility that dust, foreign matter, moisture or acid-base liquid contained in the outside air can enter the shell body and contaminate the soil sample, avoiding the detection error of the soil sample caused by the entry of foreign matter from the outside, ensuring the detection accuracy of the soil after air drying, and the heated air increases the speed of drying the soil sample during air circulation, thereby improving the air drying efficiency of the soil sample. The air inlet is connected with the inside of the shell through the filter wind tube and the air guide cavity, so that the air entering from the air inlet passes through the air guide cavity and enters along the side of the shell, avoiding the problem of excessive wind pressure on the soil surface caused by direct air blowing on the soil sample, so as to ensure the integrity of the soil and the uniformity of internal air drying; at the same time, an air collecting hood connected with the inside of the shell is also arranged above the fan, and the air collecting hood is attached to the inner surface of the shell, and the inner surface of the air collecting hood is surrounded by air guide strips, so that the air inside the shell can be collected through the air collecting hood for the discharge of the fan, thereby improving the air suction and exhaust effect of the fan, and facilitating the rapid drying of the soil samples placed inside the shell, and the air guide strips on the surface of the air collecting hood allow the air absorbed and discharged by the fan to be circulated and guided accordingly, thereby driving the air inside the shell to circulate, effectively improving the air drying effect of the soil samples.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A downdraft soil air dryer, characterized in that: It includes a shell, a box cover detachably connected to the top of the shell, and a stand connected to the bottom of the shell for supporting the shell, and an air outlet is arranged on the side of the center of the stand, the interior of the shell is provided with a storage plate for placing materials, a fan connected to the air outlet is arranged below the interior of the shell, an air collecting hood connected to the interior of the shell is arranged above the fan and located inside the shell, an air inlet is arranged above the box cover, a conical hole connected to the air inlet is arranged in the center of the box cover, an air guide cavity for connecting the conical hole and the shell is arranged inside the box cover, an air filter cylinder is detachably connected to the center of the conical hole, and a heater is arranged in the center of the air filter cylinder.

2. A downdraft soil air dryer according to claim 1, characterized in that: A bottom plate for sealing the cone hole is connected below the box cover, the air filter cylinder is connected to the center of the bottom plate, and a clamping hole and a wire hole are respectively arranged on the surface of the bottom plate.

3. A downdraft soil air dryer according to claim 2, characterized in that: The center of the air filter cylinder is provided with a core hole, the heater is arranged in the center of the core hole, and the heater includes a fixing plate, and A heating tube is connected to the center of a fixing plate, a vertical rod is connected below the fixing plate, and a clamping block which is snap-fitted with the clamping hole is connected at the lower end of the vertical rod.

4. A downdraft soil air dryer according to claim 3, characterized in that: The air filter cylinder and the tapered hole are both tapered structures and fit each other, and a rubber ring which is interference fit with the tapered hole is connected above the air filter cylinder.

5. A downdraft soil air dryer according to claim 1, characterized in that: A clamping groove which is matched and connected with the upper side of the shell body is arranged below the box cover, and the air guide cavity is arranged in the center of the box cover.

6. A downdraft soil air dryer according to claim 5, characterized in that: A first through hole is arranged on the central side of the box cover facing the conical hole, and a second through hole is arranged on the lower side of the box cover facing the inside of the shell. Both the first through hole and the second through hole are connected to the air guide cavity.

7. A downdraft soil air dryer according to claim 1, characterized in that: The inner surface of the shell is connected with a protrusion for supporting the storage plate, the center of the storage plate is provided with more than two ventilation holes, and the outer side of the storage plate is connected with a guardrail around it.

8. The downdraft soil air dryer according to claim 1, characterized in that: A machine room is arranged at the lower part of the shell, the wind collecting hood is placed above the machine room and fits with the inner surface of the shell, the fan is connected to the inside of the machine room, and a wind direction cover connected to the air outlet is connected below the fan, an elastic ring for fitting and sealing on the inner surface of the shell is connected above the wind collecting hood, an air guide port connected to the fan is arranged below the wind collecting hood, and an air guide strip is connected around the inner surface of the wind collecting hood.

9. A downdraft soil air dryer according to claim 8, characterized in that: A limiting strip connected to the inner surface of the shell is arranged above the air collecting hood, and a supporting net and isolation cotton covering the air collecting hood are arranged above the limiting strip.

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