Temperature control mechanism and soil microbial respiration test box containing the mechanism

Abstract

The utility model discloses a kind of temperature control mechanism and the soil microbial respiration test box containing the mechanism, it is related to test box technical field, the temperature control mechanism includes temperature sensor, heating pipe installed in the top end of the inner wall of box, one end of the box is equipped with cooling assembly, temperature sensor, heating pipe and cooling assembly are electrically connected by wire with controller.The utility model can realize the convenient docking fixation between support turntable and support rotating rod by driving mechanism, so multiple soil microbial samples can be quickly assembled and disassembled, to further improve the efficiency of soil microbial sample assembly and disassembly, and by driving support rotating rod to drive multiple support turntable to rotate synchronously, without opening observation door, sample in deep place in box can be moved to observation position, and by rotating positioning to support rotating rod, sample can be kept at observation position, effectively ensure that constant temperature environment in box is not disturbed.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, specifically a temperature control mechanism and a soil microbial respiration test chamber containing the mechanism. Background Technology

[0002] The soil microbial respiration test chamber is an experimental device specifically designed to measure the respiration of soil microorganisms. It mainly quantifies the intensity of microbial respiration by controlling key environmental conditions such as temperature, humidity, and ventilation, combined with gas detection technology (such as monitoring carbon dioxide release or oxygen consumption). The aim is to simulate or control the soil microenvironment to reduce external interference, thereby reflecting key indicators such as microbial activity, organic matter conversion efficiency, and ecological function.

[0003] In soil microbial respiration experiments, to ensure the scientific validity and comparability of experimental data, it is often necessary to conduct simultaneous experiments on multiple soil samples under the same environmental conditions. This effectively eliminates interference from environmental variables and accurately analyzes the differences in microbial activity among different soil samples. However, since some samples are located deep inside the test chamber, they need to be removed for observation. This requires frequent opening and closing of the chamber door, which can easily cause sudden temperature changes inside the chamber. This not only affects the ongoing experimental process but also requires additional time to restore the set temperature, severely reducing the efficiency and data reliability of simultaneous multi-sample experiments. Based on this, a temperature control mechanism and a soil microbial respiration test chamber containing this mechanism are provided to eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide a temperature control mechanism and a soil microbial respiration test chamber containing the mechanism, so as to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A temperature control mechanism includes a temperature sensor installed at the top of the inner wall of a box, a heating tube installed on the inner wall of the box, and a cooling component installed at one end of the box. The temperature sensor, the heating tube, and the cooling component are all electrically connected to a controller via wires.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions: A soil microbial respiration test chamber includes the aforementioned temperature control mechanism and a chamber body. An observation door is rotatably connected to the end of the chamber body away from the cooling component. A support plate is installed on the inner wall of the chamber body, and the support plate is located below the observation door. A support rotating rod is provided at the top of the support plate and is rotatably connected to the chamber body. Multiple support turntables are vertically and equidistantly arranged on the outer wall of the support rotating rod. Multiple material discharge slots are circumferentially and equidistantly opened at the top of each of the multiple support turntables. A drive mechanism for driving the multiple support turntables to rotate is provided on the chamber body. The driving mechanism includes: A connecting rod is fixedly connected to the bottom end of the supporting rotating rod. The supporting plate is rotatably sleeved on the outer wall of the connecting rod. A connecting rotating block is fixedly connected to the bottom end of the connecting rod. The connecting rotating block is rotatably connected to the box body. A fixing ring is rotatably sleeved on the outer wall of the connecting rotating block. The fixing ring is fixedly connected to the box body.

[0007] In one alternative embodiment, the drive mechanism further includes: A limiting component is installed on the support rotating rod; The limiting component includes: Multiple rotating blocks are vertically and equidistantly fixedly connected to the outer wall of the supporting rotating rod. The top outer wall of each of the multiple rotating blocks is frustum-shaped. The multiple rotating blocks are located inside the multiple supporting turntables. The outer wall of each of the multiple rotating blocks is slidably fitted with a docking sleeve. The supporting turntable is fixedly connected to the outer wall of the docking sleeve. The supporting turntable and the docking sleeve are both provided with movable grooves for the supporting rotating rod to slide. The connecting rod is equipped with a transmission component for driving the connecting rod to rotate; The connecting rotating block is provided with a positioning component for rotating and positioning the connecting rotating block; The docking sleeve is provided with a locking component for engaging and docking the docking sleeve with the rotating block.

[0008] In one alternative embodiment, the transmission assembly includes: A second bevel gear is fixedly connected to the outer wall of the connecting rod, and the outer wall of the second bevel gear is meshed with the first bevel gear. The first bevel gear is equipped with a rotating component.

[0009] In one alternative embodiment, the rotating assembly includes: A transmission rod is fixedly connected to one end of the first bevel gear. The transmission rod extends to the outside of one end of the housing and is rotatably connected to the housing. A knob is fixedly connected to the end of the transmission rod away from the first bevel gear, and the knob is located below the observation door.

[0010] In one alternative embodiment, the positioning component includes: A limiting baffle is slidably connected inside the connecting rotating block. A positioning block is fixedly connected to one end of the limiting baffle. The positioning block is slidably connected to the connecting rotating block. The outer wall of the positioning block away from the limiting baffle is hemispherical. The positioning block penetrates the connecting rotating block to the inside of the fixing ring. The inner wall of the fixing ring is provided with multiple positioning slots that match the outer wall of the positioning block at equal intervals around the circumference. A reset component is provided on the limiting baffle.

[0011] In one alternative: the reset component is a spring disposed at the end of the limiting baffle away from the positioning block, one end of the spring being in contact with the outer wall of the limiting baffle, and the other end of the spring being in contact with the inner wall of the connecting rotating block.

[0012] In one alternative embodiment, the engagement assembly includes: Multiple positioning plates are circumferentially and equidistantly fixed to the inner wall of the docking sleeve. A limiting slot is provided at the position where the rotating block contacts the positioning plate to allow the positioning plate to slide.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention enables convenient docking and fixing between the support turntable and the support rod through a drive mechanism, allowing for rapid loading and unloading of multiple soil microbial samples, thereby further improving the efficiency of soil microbial sample loading and unloading. At the same time, by driving the support rod to drive multiple support turntables to rotate synchronously, samples deep inside the chamber can be moved to the observation position without opening the observation door. Furthermore, by rotating and positioning the support rod, the sample can be kept at the observation position, effectively ensuring that the constant temperature environment inside the chamber is not disturbed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the docking sleeve of this utility model.

[0017] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0018] Figure 5 For the present utility model Figure 3 A magnified schematic diagram of the structure at point B in the diagram.

[0019] Figure reference numerals: 1. Box body; 201. Knob; 202. Transmission rod; 203. Rotating block; 204. Fixing ring; 205. Connecting sleeve; 206. Positioning insert plate; 207. First bevel gear; 208. Spring; 209. Limiting baffle; 2010. Second bevel gear; 2011. Connecting rod; 2012. Connecting block; 2013. Positioning block; 3. Observation door; 4. Support plate; 5. Support turntable; 6. Supporting rod; 7. Discharge chute; 8. Cooling component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] In one embodiment, such as Figures 1-5 As shown, a temperature control mechanism includes a temperature sensor installed at the top of the inner wall of a housing 1, a heating tube installed on the inner wall of the housing 1, and a cooling component 8 installed at one end of the housing 1. The temperature sensor, the heating tube, and the cooling component 8 are all electrically connected to the controller via wires. A soil microbial respiration test chamber includes the aforementioned temperature control mechanism and a chamber body 1. An observation door 3 is rotatably connected to the end of the chamber body 1 away from the cooling component 8. A support plate 4 is installed on the inner wall of the chamber body 1. The support plate 4 is located below the observation door 3. A support rotating rod 6 is provided at the top of the support plate 4. The support rotating rod 6 is rotatably connected to the chamber body 1. Multiple support turntables 5 are vertically and equidistantly arranged on the outer wall of the support rotating rod 6. Multiple material discharge slots 7 are circumferentially and equidistantly opened at the top of each of the multiple support turntables 5. A drive mechanism for driving the multiple support turntables 5 to rotate is provided on the chamber body 1. The driving mechanism includes: a connecting rod 2011 fixedly connected to the bottom end of the supporting rod 6; a supporting plate 4 rotatably sleeved on the outer wall of the connecting rod 2011; a connecting block 2012 fixedly connected to the bottom end of the connecting rod 2011; the connecting block 2012 rotatably connected to the housing 1; and a fixing ring 204 rotatably sleeved on the outer wall of the connecting block 2012, which is fixedly connected to the housing 1. In this embodiment, it should be specifically noted that: the cooling component 8 compresses the refrigerant into a high-temperature and high-pressure gas through the compressor, which then becomes liquid after being cooled by the condenser. The gas is then throttled and depressurized through the expansion valve and enters the evaporator to absorb heat from the chamber, causing the refrigerant to vaporize and thus lower the temperature inside the chamber. The vaporized refrigerant then returns to the compressor for recirculation. In use, multiple soil microbial samples are placed inside multiple material feeding troughs 7 respectively. Then, the support turntable 5 is pushed to move to the inside of the box 1, and the outer wall of the support rotating rod 6 is sleeved through the moving slide. At the same time, the support turntable 5 and the support rotating rod 6 can be conveniently connected and fixed through the drive mechanism. Then, rotate the observation door 3 to close the opening of the chamber 1. At this time, the temperature sensor and heating tube are activated by the controller to heat the inner cavity of the chamber 1. When the temperature sensor detects that the temperature in the inner cavity of the chamber 1 has risen to a specified value, the controller controls the heating tube to keep the inner cavity of the chamber 1 at a constant temperature. If the temperature is too high, the controller activates the cooling component 8 to cool the temperature in the inner cavity of the chamber 1. In this way, the temperature in the inner cavity of the chamber 1 can be controlled in real time. When it is necessary to observe the condition of soil microorganisms, the support rotating rod 6 can be rotated and positioned by the drive mechanism. At the same time, multiple support rotating disks 5 rotate synchronously under the drive of the support rotating rod 6, so as to move the material discharge trough 7 located deep inside the box 1 to one end of the observation door 3, so as to observe the soil microorganisms in real time while ensuring a constant temperature. In one embodiment, such as Figures 2-4 As shown, the drive mechanism also includes a limiting component disposed on the support rod 6; The limiting component includes: multiple rotating blocks 203 that are vertically and equidistantly fixedly connected to the outer wall of the supporting rotating rod 6. The top outer wall of each of the multiple rotating blocks 203 is frustoconical. The multiple rotating blocks 203 are located inside the multiple supporting turntables 5. The outer wall of each of the multiple rotating blocks 203 is slidably fitted with a docking sleeve 205. The supporting turntables 5 are fixedly connected to the outer wall of the docking sleeve 205. The supporting turntables 5 and the docking sleeve 205 are both provided with movable grooves for the supporting rotating rod 6 to slide. The connecting rod 2011 is provided with a transmission component for driving the connecting rod 2011 to rotate; The connecting rotating block 2012 is provided with a positioning component for rotating and positioning the connecting rotating block 2012; The docking sleeve 205 is provided with a locking component for engaging and docking with the rotating block 203; The engaging assembly includes: multiple positioning plates 206 that are circumferentially and equidistantly fixed to the inner wall of the docking sleeve 205; a limiting slot is provided at the contact position between the rotating block 203 and the positioning plate 206 for the positioning plate 206 to slide; through the cooperation of the limiting assembly and the engaging assembly, the supporting turntable 5 and the supporting rotating rod 6 can be conveniently docked and fixed. In one embodiment, such as Figures 1-5 As shown, the transmission assembly includes: A second bevel gear 2010 is fixedly connected to the outer wall of the connecting rod 2011, and a first bevel gear 207 is meshed with the outer wall of the second bevel gear 2010. A rotating assembly is provided on the first bevel gear 207; The rotating assembly includes: a transmission rod 202 fixedly connected to one end of the first bevel gear 207, the transmission rod 202 extending through to the outside of one end of the housing 1, the transmission rod 202 being rotatably connected to the housing 1, and a knob 201 fixedly connected to the end of the transmission rod 202 away from the first bevel gear 207, the knob 201 being located below the observation door 3. Through the cooperation of the transmission assembly and the rotating assembly, the support turntable 5 can be rotated by the support rotating rod 6. In one embodiment, such as Figures 2-5 As shown, the positioning component includes: a limiting baffle 209 slidably connected inside the connecting rotating block 2012; a positioning block 2013 is fixedly connected to one end of the limiting baffle 209; the positioning block 2013 is slidably connected to the connecting rotating block 2012; the outer wall of the end of the positioning block 2013 away from the limiting baffle 209 is hemispherical; the positioning block 2013 penetrates through the connecting rotating block 2012 to the interior of the fixing ring 204; the inner wall of the fixing ring 204 is provided with a plurality of positioning slots that match the outer wall of the positioning block 2013 at equal intervals in the circumferential direction. A reset component is provided on the limit baffle 209; The reset component is a spring 208 located at the end of the limit baffle 209 away from the positioning block 2013. One end of the spring 208 is in contact with the outer wall of the limit baffle 209, and the other end of the spring 208 is in contact with the inner wall of the connecting rotating block 2012. Through the cooperation of the positioning component and the reset component, the support rotating rod 6 can be rotated and positioned.

[0022] The above embodiments disclose a temperature control mechanism and a soil microbial respiration test chamber containing the mechanism. In use, multiple soil microbial samples are placed inside multiple material feeding troughs 7. Then, the support turntable 5 is pushed to move to the inside of the chamber 1 and is fitted onto the outer wall of the support rotating rod 6 through the moving slide groove until the docking sleeve 205 is fitted onto the outer wall of the support rotating rod 6 under the drive of the support turntable 5. At this time, the docking sleeve 205 is located above a rotating block 203. Then, the support turntable 5 is pulled to make the docking sleeve 205 slide down along the outer wall of the support rotating rod 6, so that the docking sleeve 205 can fit onto the outer wall of the rotating block 203. During this process, the positioning plate 206, driven by the docking sleeve 205, comes into contact with the outer wall of the rotating block 203. At this time, rotating the support turntable 5 can move the positioning plate 206 to the port of the limiting slot under the drive of the docking sleeve 205. Then, push the support turntable 5 to insert the positioning plate 206 into the inside of the limiting slot and slide along the inner wall of the limiting slot until the docking sleeve 205 comes into contact with the upper surface of the rotating block 203. This allows for convenient installation and fixation of the support turntable 5. Then, rotate the observation door 3 to close the opening of the chamber 1. At this time, the temperature sensor and heating tube are activated by the controller to heat the inner cavity of the chamber 1. When the temperature sensor detects that the temperature in the inner cavity of the chamber 1 has risen to a specified value, the controller controls the heating tube to keep the inner cavity of the chamber 1 at a constant temperature. If the temperature is too high, the controller activates the cooling component 8 to cool the temperature in the inner cavity of the chamber 1. In this way, the temperature in the inner cavity of the chamber 1 can be controlled in real time. When it is necessary to observe the soil microorganisms, the knob 201 is turned to drive the transmission rod 202 to rotate. At the same time, the first bevel gear 207 drives the second bevel gear 2010 to rotate under the drive of the transmission rod 202. Simultaneously, the supporting rotating rod 6 and the connecting rotating block 2012 rotate synchronously under the drive of the connecting rotating rod 2011. During this process, the rotating block 203 drives the supporting turntable 5 to rotate under the drive of the supporting rotating rod 6, through the positioning insert plate 206 and the docking sleeve 205. This allows the material discharge trough 7 located deep inside the box 1 to be moved to one end of the observation door 3, so as to ensure a constant temperature while observing the soil microorganisms in real time. Simultaneously, the positioning block 2013 moves under the drive of the connecting rotating block 2012. At this time, the positioning block 2013, blocked by the inner wall of a positioning slot, pushes the limiting baffle 209 to slide along the inner wall of the connecting rotating block 2012. At the same time, the limiting baffle 209 retracts by moving the compression spring 208. When the positioning block 2013 moves to the port of the next positioning slot under the drive of the connecting rotating block 2012, the spring 208 pushes the limiting baffle 209 by rebounding, so that the positioning block 2013 is inserted into the interior of the next positioning slot. Then, during the rotation of the knob 201, the above operation is repeated, so that the support turntable 5 can be rotated and positioned by the support rotating rod 6.

[0023] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A temperature control mechanism, characterized in that, The device includes a temperature sensor installed on the top of the inner wall of the housing (1), a heating tube installed on the inner wall of the housing (1), and a cooling component (8) installed at one end of the housing (1). The temperature sensor, the heating tube and the cooling component (8) are all electrically connected to the controller via wires.

2. A soil microbial respiration test chamber, comprising the temperature control mechanism as described in claim 1, and further comprising a chamber body (1), wherein an observation door (3) is rotatably connected to one end of the chamber body (1) away from the cooling component (8), a support plate (4) is installed on the inner wall of the chamber body (1), the support plate (4) is located below the observation door (3), a support rotating rod (6) is provided at the top of the support plate (4), the support rotating rod (6) is rotatably connected to the chamber body (1), and a plurality of support turntables (5) are vertically and equidistantly arranged on the outer wall of the support rotating rod (6), and a plurality of material discharge slots (7) are circumferentially and equidistantly opened at the top of the plurality of support turntables (5), characterized in that, The housing (1) is provided with a drive mechanism for driving the rotation of multiple support turntables (5); The driving mechanism includes: a connecting rod (2011) fixedly connected to the bottom end of the supporting rotating rod (6), the supporting plate (4) being rotatably sleeved on the outer wall of the connecting rod (2011), a connecting rotating block (2012) fixedly connected to the bottom end of the connecting rod (2011), the connecting rotating block (2012) being rotatably connected to the box (1), and a fixing ring (204) being rotatably sleeved on the outer wall of the connecting rotating block (2012), the fixing ring (204) being fixedly connected to the box (1).

3. A soil microbial respiration test chamber according to claim 2, characterized in that, The drive mechanism also includes a limiting component disposed on the support rotating rod (6); The limiting component includes: multiple rotating blocks (203) that are vertically and equidistantly fixedly connected to the outer wall of the supporting rotating rod (6), the top outer wall of each of the multiple rotating blocks (203) is frustum-shaped, the multiple rotating blocks (203) are respectively located inside the multiple supporting turntables (5), the outer wall of each of the multiple rotating blocks (203) is slidably fitted with a docking sleeve (205), the supporting turntable (5) is fixedly connected to the outer wall of the docking sleeve (205), and the supporting turntable (5) and the docking sleeve (205) are both provided with movable grooves for the supporting rotating rod (6) to slide; The connecting rod (2011) is provided with a transmission component for driving the connecting rod (2011) to rotate; The connecting rotating block (2012) is provided with a positioning component for rotating and positioning the connecting rotating block (2012); The docking sleeve (205) is provided with a locking component for engaging and docking the docking sleeve (205) with the rotating block (203).

4. A soil microbial respiration test chamber according to claim 3, characterized in that, The transmission assembly includes: a second bevel gear (2010) fixedly connected to the outer wall of the connecting rod (2011), and a first bevel gear (207) meshing with the outer wall of the second bevel gear (2010). The first bevel gear (207) is provided with a rotating component.

5. A soil microbial respiration test chamber according to claim 4, characterized in that, The rotating assembly includes: a transmission rod (202) fixedly connected to one end of the first bevel gear (207), the transmission rod (202) extending through to the outside of one end of the housing (1), the transmission rod (202) being rotatably connected to the housing (1), and a knob (201) fixedly connected to the end of the transmission rod (202) away from the first bevel gear (207), the knob (201) being located below the observation door (3).

6. A soil microbial respiration test chamber according to claim 3, characterized in that, The positioning component includes: a limiting baffle (209) slidably connected inside the connecting rotating block (2012), a positioning block (2013) fixedly connected to one end of the limiting baffle (209), the positioning block (2013) slidably connected to the connecting rotating block (2012), the outer wall of the positioning block (2013) away from the limiting baffle (209) is hemispherical, the positioning block (2013) penetrates through the connecting rotating block (2012) to the interior of the fixing ring (204), and the inner wall of the fixing ring (204) is provided with a plurality of positioning slots that match the outer wall of the positioning block (2013) at equal intervals around the circumference; A reset component is provided on the limiting baffle (209).

7. A soil microbial respiration test chamber according to claim 6, characterized in that, The reset component is a spring (208) disposed on the end of the limiting baffle (209) away from the positioning block (2013). One end of the spring (208) is in contact with the outer wall of the limiting baffle (209), and the other end of the spring (208) is in contact with the inner wall of the connecting rotating block (2012).

8. A soil microbial respiration test chamber according to claim 3, characterized in that, The engaging assembly includes a plurality of positioning plates (206) that are circumferentially and equidistantly fixed to the inner wall of the docking sleeve (205), and a limiting slot for sliding the positioning plates (206) is provided at the contact position between the rotating block (203) and the positioning plates (206).

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