Substrate temperature detection device with temperature difference regulation and control function for soilless culture

Abstract

The invention discloses a substrate temperature detection device with a temperature difference regulation and control function for soilless culture, and relates to the technical field of temperature detection, the substrate temperature detection device comprises a main machine body, a front housing, a steering wheel, a pair of driving wheels, a cleaning mechanism, a filtering mechanism and a detection temperature regulation mechanism, the pair of driving wheels are installed on the two sides of the main machine body, the steering wheel is installed at the bottom of the side, away from the front housing, of the main machine body, the cleaning mechanism is arranged in the front housing, a pressurization cabin is formed in the upper portion of the main machine body, a traction cabin is formed in the lower portion of the main machine body, and the filtering mechanism is arranged in the pressurization cabin and the traction cabin. The detection and temperature regulation mechanism is mounted at the top of the main machine body, the cleaning mechanism is used for cleaning the matrix pool, the filtering mechanism is used for filtering and cleaning the matrix, and the detection and temperature regulation mechanism is used for detecting the temperature of the matrix and regulating the temperature of the matrix according to a detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature detection, and specifically to a substrate temperature detection device with a temperature difference regulation function for soilless cultivation. Background Art

[0002] Soilless cultivation refers to a cultivation method in which media such as water, peat, leaf mold, vermiculite, etc. are used as the substrate for plant roots, enabling the plant roots to directly contact the nutrient solution. Soilless cultivation technology is mainly applied in places with suitable light and temperature but without soil, such as deserts, beaches, deserted islands, etc. As long as there is a certain amount of fresh water supply, soilless cultivation can be carried out. Soilless cultivation is divided into hydroponics, aeroponics, and substrate cultivation according to different cultivation media. Among them, the most commonly used, easiest to manage, and better cost-controlled soilless cultivation method is hydroponics, which uses water as the substrate. It means that the nutrient solution components are easy to control when the plant roots directly contact the nutrient solution and can be adjusted at any time. However, this method will have an oxygen deficiency phenomenon, causing the plant roots to fall off. The nutrient components in the substrate and the roots shed by microbial fermentation make the water body turbid. When the sunshine duration is long, the water temperature rises, which is harmful to plants and even causes the death of the plants. Therefore, a sensor device for regulating the substrate temperature is needed to manage soilless cultivation. Summary of the Invention

[0003] The purpose of the present invention is to provide a substrate temperature monitoring device with a temperature difference regulation function for soilless cultivation to solve the problems raised in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A substrate temperature detection device with a temperature difference regulation function for soilless cultivation includes a main body, a front cover, steering wheels, a pair of drive wheels, a cleaning mechanism, a filtering mechanism, and a detection and temperature regulation mechanism. The front cover is connected to the main body. The pair of drive wheels are installed on both sides of the main body. The steering wheels are installed at the bottom of the main body on the side away from the front cover. The cleaning mechanism is arranged in the front cover. A pressurization chamber is opened in the upper part of the main body, and a traction chamber is opened in the lower part of the main body. The filtering mechanism is arranged in the pressurization chamber and the traction chamber. The detection and temperature regulation mechanism is installed on the top of the main body. The operator puts the detection device into the substrate. The cleaning mechanism cleans the substrate pool. The filtering mechanism filters and cleans the substrate. The detection and temperature regulation mechanism detects the temperature of the substrate and adjusts the temperature of the substrate according to the detection result. The pair of drive wheels drive the main body to move, and the steering wheels enable the main body to change direction, realizing the comprehensive cleaning of the substrate pool.

[0005] Further, the cleaning mechanism includes a double - helix brush roll and a pair of side brush rolls. A pair of side support plates are symmetrically arranged on both sides of the front cover housing. Each side support plate is provided with a motor compartment. A first motor is arranged in the motor compartment. The pair of side brush rolls are respectively connected to the first motor. A driving bevel gear is arranged on the side of each side brush roll away from the first motor. The two first motors rotate in opposite directions. The first motors drive the side brush rolls to rotate, and the side brush rolls play a role in cleaning the side walls of the substrate pool. The two driving bevel gears respectively drive the two driven bevel gears to rotate, and the rotation directions of the two driven bevel gears are the same, and the mandrel is driven to rotate.

[0006] Further, a mandrel is rotatably installed on the pair of side support plates. Driven bevel gears are installed at both ends of the mandrel. The driven bevel gears are meshed with the driving bevel gears. A sliding key is arranged on the mandrel. The double - helix brush roll is slidably sleeved on the mandrel through the sliding key. A side adapter is rotatably installed on one side of the double - helix brush roll. The mandrel drives the double - helix brush roll to rotate, and the double - helix brush roll cleans the bottom of the substrate pool. The brush hairs on both sides of the double - helix brush roll are spirally arranged and have opposite spiral directions. Therefore, the impurities brushed off will be affected by the spiral brush hairs and concentrate towards the middle and flow towards the direction of the traction compartment.

[0007] Further, a slip ring is connected to the side adapter. A cylindrical pin is eccentrically arranged on the driving bevel gear near the slip ring. The cylindrical pin is slidably sleeved in the slip ring. The side adapter and the double - helix brush roll rotate relative to each other and cannot produce relative axial movement. When the driving bevel gear rotates, it drives the cylindrical pin to move. The cylindrical pin drives the slip ring to move. The slip ring and the side adapter move back and forth along the axis of the double - helix brush roll together, so that the double - helix brush roll is pulled by the side adapter while rotating itself, achieving the effect of rotating while moving back and forth repeatedly. The cleaning effect of the brush hairs on the substrate pool is improved, so that the algae and rotten roots in the substrate pool are cleaned, and the factors causing the water temperature to rise are reduced.

[0008] Further, the filtering mechanism includes a filter cloth, several tensioning rollers and a scraper. The filter cloth surrounds and passes through the pressurization compartment and the traction compartment. Several tensioning rollers are rotatably installed in the pressurization compartment and the traction compartment. The several tensioning rollers tension the filter cloth. A second motor is arranged on one side of a tensioning roller. The second motor is arranged in the main body of the machine. The scraper is installed in the pressurization compartment. The scraper is in contact with the filter cloth. The second motor drives the tensioning roller to rotate, and the tensioning roller drives the filter cloth to move. The impurities sent into the traction compartment by the cleaning mechanism are taken away from the substrate along with the moving filter cloth.

[0009] Further, a through groove is formed in the upper end of the main body, and the through groove communicates with the pressurization chamber. A sealing cover is arranged at the through groove. A pressurization pump (not shown in the figure) is installed inside the main body. A water level sensor is arranged at the junction of the pressurization chamber and the traction chamber. The water level sensor and the pressurization pump are connected to a control system through an electric circuit. The air extraction end of the pressurization pump communicates with the outside of the main body, and the air pumping end of the pressurization pump communicates with the inside of the pressurization chamber. Since the device is immersed in the substrate, the pressurization pump injects air into the pressurization chamber, causing the water in the pressurization chamber to be discharged downward. Through the detection of the water level sensor, it is controlled that the substrate can submerge the water pumping jacket without overflowing into the pressurization chamber. After the filter cloth takes the impurities away from the substrate, the impurities adhere to the filter cloth, and the scraper scrapes the impurities on the filter cloth, achieving the effect of cleaning the surface of the filter cloth and enhancing the circulating filtration performance of the filter cloth. After each use of the device, the operator opens the sealing cover to remove the impurities accumulated in the pressurization chamber.

[0010] Further, the detection and temperature regulation mechanism includes a water pumping jacket, a pair of shaft-type gears, and a pair of temperature control through pipes. The water pumping jacket is arranged in the traction chamber, and the opening of the water pumping jacket is in contact with the filter cloth. The pair of shaft-type gears are rotatably installed in the traction chamber. The pair of shaft-type gears are located inside the water pumping jacket and are meshed with each other. The mutually remote sides of the two shaft-type gears are in sealed contact with the water pumping jacket. One end of one shaft-type gear is equipped with a third motor. The third motor is arranged inside the main body, and the third motor drives the shaft-type gear to rotate. The two shaft-type gears rotate meshingly, sucking the substrate backward from the water pumping jacket. The sucked substrate has been filtered by the filter cloth, and the shaft-type gears send the substrate into the water delivery channel, enabling the substrate to enter the temperature control through pipe through the connecting pipe.

[0011] Further, water delivery channels are formed on both sides of the main body corresponding to the water pumping jacket. Each water delivery channel is connected to the temperature control through pipe through a connecting pipe. A plurality of temperature guiding cylinders are horizontally distributed inside each temperature control through pipe. Each temperature guiding cylinder is rotatably connected to the temperature control through pipe. A small gear is arranged on one side of each temperature guiding cylinder. An electric push rod and a rack are also arranged inside the temperature control through pipe. The rack is connected to the piston rod of the electric push rod, and the rack is in contact with each small gear. The heat insulation tile, the refrigeration end temperature guiding fin, and the heating end temperature guiding fin all account for one-third of the outer contour of the temperature guiding cylinder. Since the contour of each temperature guiding cylinder exposed inside the water delivery channel is one-third, by pulling the rack to move through the electric push rod, the rack drives all the small gears to rotate, and the small gears drive the temperature guiding cylinders to rotate, so as to sequentially control the heat insulation tile, the temperature guiding cylinder in contact with the refrigeration end temperature guiding fin, and the temperature guiding cylinder in contact with the heating end temperature guiding fin to contact the substrate.

[0012] Furthermore, heat insulation tiles are provided on the outer contour of one-third of each heat conduction cylinder. A semiconductor refrigeration sheet is arranged inside each heat conduction cylinder. The refrigerating end and the heating end of the semiconductor refrigeration sheet are both in contact with the inner wall of the heat conduction cylinder through heat conduction fins. The heat insulation tiles do not play a role in heating or cooling when contacting the substrate. When the heat conduction cylinder in contact with the refrigerating end heat conduction fins contacts the substrate, it plays a cooling role. When the heat conduction cylinder in contact with the heating end heat conduction fins contacts the substrate, it plays a heating role. The temperature of the substrate is monitored by a temperature sensor, and then the control system is used to control the heat conduction cylinder to rotate at different angles, so as to realize the cooling and heating adjustment of the substrate. The substrate after temperature adjustment flows back to the substrate pool from the tail of the temperature control pipe.

[0013] Furthermore, a temperature sensor is provided on the main body. The temperature sensor and the semiconductor refrigeration sheet are electrically connected to the control system.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The driving bevel gear drives the cylindrical pin to move while rotating. The cylindrical pin drives the slip ring to move. The slip ring and the side adapter move back and forth along the axial direction of the double-helix brush roller together, so that the double-helix brush roller is pulled by the side adapter while rotating, achieving the effect of rotating and repeatedly moving at the same time. The cleaning effect of the bristles on the substrate pool is improved, so that the algae and rotten roots in the substrate pool are cleaned, and the factors causing the water temperature to rise are reduced.

[0015] 2. After the impurities are carried away from the substrate by the filter cloth, the impurities adhere to the filter cloth. The scraper scrapes the impurities on the filter cloth, achieving the effect of cleaning the surface of the filter cloth and enhancing the circulating filtration performance of the filter cloth.

[0016] 3. The heat insulation tiles do not play a role in heating or cooling when contacting the substrate. When the heat conduction cylinder in contact with the refrigerating end heat conduction fins contacts the substrate, it plays a cooling role. When the heat conduction cylinder in contact with the heating end heat conduction fins contacts the substrate, it plays a heating role. The temperature of the substrate is detected by a temperature sensor, and then the control system is used to control the heat conduction cylinder to rotate at different angles, so as to realize the cooling and heating adjustment of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall appearance structure of the present invention Figure 1 ; Figure 2 is a schematic diagram of the overall appearance structure of the present invention Figure 2 ; Figure 3 is a schematic diagram of the structure of the front cover part of the present invention; Figure 4 is a schematic diagram of the structure of the double-helix brush roller part of the present invention; Figure 5Schematic structural diagram of the water delivery channel of the present invention; Figure 6 Schematic structural diagram of the interior of the main body of the present invention; Figure 7 Schematic structural diagram of the interior of the temperature control pipe of the present invention; Figure 8 Schematic structural diagram of the interior of the heat conduction cylinder of the present invention.

[0018] In the figure: 1. Main body; 2. Front cover; 3. Side support plate; 4. Steering wheel; 5. Driving wheel; 6. Double-helical brush roller; 7. Mandrel; 8. Spline key; 9. Side adapter; 10. Slip ring; 11. Cylindrical pin; 12. Driven bevel gear; 13. Driving bevel gear; 14. Side brush roller; 15. Filter cloth; 16. Water pumping jacket; 17. Axial gear; 18. Pressurization chamber; 19. Towing chamber; 20. Water delivery channel; 21. Connecting pipe; 22. Temperature control pipe; 23. Electric push rod; 24. Rack; 25. Pinion gear; 26. Heat conduction cylinder; 27. Heat insulation tile; 28. Semiconductor refrigeration sheet; 29. Heat conduction fin; 30. Sealing cover; 31. Scraper; 32. Tensioning roller. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment: As Figures 1 - 8 shown, the present invention provides a technical solution, a substrate temperature detection device with a temperature difference regulation function for soilless cultivation, including a main body 1, a front cover 2, a steering wheel 4, a pair of driving wheels 5, a cleaning mechanism, a filtering mechanism, and a detection and temperature regulation mechanism. The front cover 2 is connected to the main body 1. A pair of driving wheels 5 are installed on both sides of the main body 1. The steering wheel 4 is installed at the bottom of the main body 1 on the side away from the front cover 2. The cleaning mechanism is arranged in the front cover 2. A pressurization chamber 18 is opened in the upper part of the main body 1, and a towing chamber 19 is opened in the lower part of the main body 1. The filtering mechanism is arranged in the pressurization chamber 18 and the towing chamber 19. The detection and temperature regulation mechanism is installed on the top of the main body 1. The operator places the detection device into the substrate. The cleaning mechanism cleans the substrate pool. The filtering mechanism filters and cleans the substrate. The detection and temperature regulation mechanism detects the temperature of the substrate and adjusts the temperature of the substrate according to the detection result. A pair of driving wheels 5 drive the main body 1 to move, and the steering wheel 4 enables the main body 1 to change direction, realizing the comprehensive cleaning of the substrate pool.

[0021] The cleaning mechanism includes a double - helical - direction brush roller 6 and a pair of side brush rollers 14. A pair of side support plates 3 are symmetrically arranged on both sides of the front cover 2. Each side support plate 3 is provided with a motor compartment. A first motor is arranged in the motor compartment. The pair of side brush rollers 14 are respectively connected to the first motor. A driving bevel gear 13 is arranged on the side of each side brush roller 14 away from the first motor. A mandrel 7 is rotatably installed on the pair of side support plates 3. Driven bevel gears 12 are installed at both ends of the mandrel 7. The driven bevel gears 12 are meshed with the driving bevel gears 13. A sliding key 8 is arranged on the mandrel 7. The double - helical - direction brush roller 6 is slidably sleeved on the mandrel 7 through the sliding key 8. A side adapter 9 is rotatably installed on one side of the double - helical - direction brush roller 6. A slip ring 10 is connected to the side adapter 9. A cylindrical pin 11 is eccentrically arranged on the driving bevel gear 13 near the slip ring 10. The cylindrical pin 11 is slidably sleeved in the slip ring 10.

[0022] The two first motors rotate in opposite directions. The first motors drive the side brush rollers 14 to rotate. The side brush rollers 14 play a role in cleaning the side walls of the substrate pool. The two driving bevel gears 13 respectively drive the two driven bevel gears 12 to rotate. The rotation directions of the two driven bevel gears 12 are the same. The mandrel 7 is driven to rotate. The mandrel 7 drives the double - helical - direction brush roller 6 to rotate. The double - helical - direction brush roller 6 cleans the bottom of the substrate pool. The brush hairs on both sides of the double - helical - direction brush roller 6 are helically arranged and the helical directions are opposite. Therefore, the impurities brushed off will be affected by the helical brush hairs and concentrate towards the middle and flow towards the direction of the traction compartment 19. The side adapter 9 and the double - helical - direction brush roller 6 rotate relative to each other and cannot produce relative axial movement. While the driving bevel gear 13 rotates, it drives the cylindrical pin 11 to move. The cylindrical pin 11 drives the slip ring 10 to move. The slip ring 10 and the side adapter 9 move back and forth along the axis of the double - helical - direction brush roller 6 together, so that the double - helical - direction brush roller 6 is pulled by the side adapter 9 while rotating itself, achieving the effect of rotating and repeatedly moving at the same time. The cleaning effect of the brush hairs on the substrate pool is improved, so that the algae and rotten roots in the substrate pool are cleaned, and the factors causing the water temperature to rise are reduced.

[0023] The filtering mechanism includes a filter cloth 15, several tension rollers 32 and a scraper 31. The filter cloth 15 surrounds and passes through the pressurization chamber 18 and the traction chamber 19. Several tension rollers 32 are rotatably installed in the pressurization chamber 18 and the traction chamber 19. The several tension rollers 32 tension the filter cloth 15. A second motor is arranged on one side of one tension roller 32. The second motor is arranged in the main body 1 of the machine. The scraper 31 is installed in the pressurization chamber 18. The scraper 31 is in contact with the filter cloth 15. A through groove is opened at the upper end of the main body 1 of the machine. The through groove is communicated with the pressurization chamber 18. A sealing cover 30 is arranged at the through groove. A pressurization pump (not shown in the figure) is installed inside the main body 1 of the machine. A water level sensor is arranged at the junction of the pressurization chamber 18 and the traction chamber 19. The water level sensor is electrically connected to the pressurization pump through a control system. The air extraction end of the pressurization pump is communicated with the outside of the main body 1 of the machine. The air pumping end of the pressurization pump is communicated with the inside of the pressurization chamber 18. The second motor drives the tension roller 32 to rotate. The tension roller 32 drives the filter cloth 15 to move. The impurities sent into the traction chamber 19 by the cleaning mechanism are carried away from the substrate along with the moving filter cloth 15. Since the device is immersed in the substrate, the pressurization pump injects air into the pressurization chamber 18, so that the water in the pressurization chamber 18 is discharged downward. Through the detection of the water level sensor, it is controlled that the substrate can submerge the water pumping jacket 16 without overflowing into the pressurization chamber 18. After the filter cloth 15 carries the impurities away from the substrate, the impurities adhere to the filter cloth 15. The scraper 31 scrapes the impurities on the filter cloth 15, achieving the effect of cleaning the surface of the filter cloth 15 and enhancing the cyclic filtering performance of the filter cloth 15. After each use of the device, the operator opens the sealing cover 30 and removes the accumulated impurities in the pressurization chamber 18.

[0024] The detection and temperature adjustment mechanism includes a water pumping jacket 16, a pair of shaft-type gears 17 and a pair of temperature control through pipes 22. The water pumping jacket 16 is arranged in the traction chamber 19. The opening of the water pumping jacket 16 is in contact with the filter cloth 15. A pair of shaft-type gears 17 are rotatably installed in the traction chamber 19. The pair of shaft-type gears 17 are located inside the water pumping jacket 16. The pair of shaft-type gears 17 are meshed with each other. The mutually remote sides of the two shaft-type gears 17 are in sealed contact with the water pumping jacket 16. A third motor is installed at one end of one shaft-type gear 17. The third motor is arranged in the main body 1 of the machine. The third motor drives the shaft-type gear 17 to rotate. The two shaft-type gears 17 rotate meshing with each other, sucking the substrate backward from the water pumping jacket 16. The sucked substrate has been filtered by the filter cloth 15. The shaft-type gears 17 send the substrate into the water supply channel 20, so that the substrate enters the temperature control through pipe 22 through the connecting pipe 21.

[0025] On both sides of the main body 1 corresponding to the pumping jacket 16, water supply channels 20 are provided. Each water supply channel 20 and the temperature control through pipe 22 are connected through a connecting pipe 21. Inside each temperature control through pipe 22, several heat conduction cylinders 26 are horizontally distributed. Each heat conduction cylinder 26 is rotatably connected to the temperature control through pipe 22. On one side of each heat conduction cylinder 26, a small gear 25 is provided. Inside the temperature control through pipe 22, an electric push rod 23 and a rack 24 are also provided. The rack 24 is connected to the piston rod of the electric push rod 23. The rack 24 is in contact with each small gear 25. On the outer contour of one-third of each heat conduction cylinder 26, a heat insulation tile 27 is provided. Inside each heat conduction cylinder 26, a semiconductor refrigeration sheet 28 is provided. The refrigeration end and the heating end of the semiconductor refrigeration sheet 28 are in contact with the inner wall of the heat conduction cylinder 26 through heat conduction fins 29. A temperature sensor is provided on the main body 1. The temperature sensor and the semiconductor refrigeration sheet 28 are electrically connected to the control system circuit.

[0026] The heat insulation tile 27, the refrigeration end heat conduction fin 29, and the heating end heat conduction fin 29 all account for one-third of the outer contour of the heat conduction cylinder 26. Since the exposed contour of each heat conduction cylinder 26 inside the water supply channel 20 is one-third, by pulling the rack 24 to move through the electric push rod 23, the rack 24 drives all the small gears 25 to rotate, and the small gears 25 drive the heat conduction cylinders 26 to rotate, so as to sequentially control the heat insulation tile 27, the heat conduction cylinder 26 in contact with the refrigeration end heat conduction fin 29, and the heat conduction cylinder 26 in contact with the heating end heat conduction fin 29 to contact the substrate. When the heat insulation tile 27 contacts the substrate, it does not play a role in heating or cooling. When the heat conduction cylinder 26 in contact with the refrigeration end heat conduction fin 29 contacts the substrate, it plays a role in cooling. When the heat conduction cylinder 26 in contact with the heating end heat conduction fin 29 contacts the substrate, it plays a role in heating. By detecting the temperature of the substrate through the temperature sensor and then using the control system to control the heat conduction cylinder 26 to rotate at different angles, the cooling and heating adjustment of the substrate can be realized. The substrate after temperature adjustment flows back to the substrate pool from the tail of the temperature control through pipe 22.

[0027] The working principle of the present invention: The operator puts the detection device into the substrate. The cleaning mechanism cleans the substrate pool. The filtering mechanism filters and cleans the substrate. The detection and temperature adjustment mechanism detects the temperature of the substrate and adjusts the temperature of the substrate according to the detection result. A pair of driving wheels 5 drive the main body 1 to move, and the steering wheel 4 enables the main body 1 to change direction, so as to achieve a comprehensive cleaning of the substrate pool.

[0028] The two first motors rotate in opposite directions. The first motors drive the side brush rollers 14 to rotate, and the side brush rollers 14 play a role in cleaning the side walls of the substrate pool. The two driving bevel gears 13 respectively drive the two driven bevel gears 12 to rotate. The rotation directions of the two driven bevel gears 12 are the same, and the mandrel 7 is driven to rotate. The mandrel 7 drives the double-helix brush roller 6 to rotate. The double-helix brush roller 6 cleans the bottom of the substrate pool. The bristles on both sides of the double-helix brush roller 6 are arranged in a spiral pattern and have opposite spiral directions. Therefore, the impurities cleaned off will be affected by the spiral bristles and concentrate towards the middle, and flow towards the direction of the traction cabin 19. There is relative rotation between the side adapter 9 and the double-helix brush roller 6, and no axial relative movement can occur. While the driving bevel gear 13 rotates, it drives the cylindrical pin 11 to move. The cylindrical pin 11 drives the slip ring 10 to move. The slip ring 10 and the side adapter 9 move back and forth along the axis of the double-helix brush roller 6, so that the double-helix brush roller 6 is pulled by the side adapter 9 while rotating itself, achieving the effect of rotating while moving back and forth repeatedly, improving the cleaning effect of the bristles on the substrate pool, cleaning the algae and rotten roots in the substrate pool, and reducing the factors causing the water temperature to rise.

[0029] The second motor drives the tensioning roller 32 to rotate. The tensioning roller 32 drives the filter cloth 15 to move. The impurities sent into the traction cabin 19 by the cleaning mechanism are taken away from the substrate along with the moving filter cloth 15. Since the device is immersed in the substrate, the booster pump injects air into the pressurization cabin 18, causing the water in the pressurization cabin 18 to drain downward. Through the detection of the water level sensor, it is controlled that the substrate can immerse the water extraction jacket 16 without overflowing into the pressurization cabin 18. After the filter cloth 15 takes the impurities away from the substrate, the impurities adhere to the filter cloth 15, and the scraper 31 scrapes the impurities on the filter cloth 15, achieving the effect of cleaning the surface of the filter cloth 15 and enhancing the cyclic filtration performance of the filter cloth 15. After each use of the device, the operator opens the sealing cover 30 to remove the impurities accumulated in the pressurization cabin 18.

[0030] The third motor drives the shaft-type gear 17 to rotate. The two shaft-type gears 17 mesh and rotate with each other, sucking the substrate backward from the water extraction jacket 16. The sucked substrate has been filtered by the filter cloth 15. The shaft-type gear 17 sends the substrate into the water supply channel 20, so that the substrate enters the temperature control pipe 22 through the connecting pipe 21.

[0031] The heat insulation tile 27, the heat conduction fin 29 at the refrigeration end, and the heat conduction fin 29 at the heating end all account for one-third of the outer contour of the heat conduction cylinder 26. Since the contour of each heat conduction cylinder 26 exposed inside the water supply channel 20 is one-third, when the rack 24 is pulled by the electric push rod 23 to move, the rack 24 drives all the small gears 25 to rotate, and the small gears 25 drive the heat conduction cylinder 26 to rotate, so as to sequentially control the heat insulation tile 27, the heat conduction cylinder 26 in contact with the heat conduction fin 29 at the refrigeration end, and the heat conduction cylinder 26 in contact with the heat conduction fin 29 at the heating end to contact the substrate. When the heat insulation tile 27 contacts the substrate, it does not play a role in heating or cooling. When the heat conduction cylinder 26 in contact with the heat conduction fin 29 at the refrigeration end contacts the substrate, it plays a role in cooling. When the heat conduction cylinder 26 in contact with the heat conduction fin 29 at the heating end contacts the substrate, it plays a role in heating. The temperature of the substrate is detected by the temperature sensor, and then the control system is used to control the heat conduction cylinder 26 to rotate at different angles, so as to realize the cooling and heating adjustment of the substrate. The substrate after temperature adjustment flows back to the substrate pool from the tail of the temperature control pipe 22.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A substrate temperature detection device with a temperature difference regulation function for soilless cultivation, characterized in that: It includes a main body (1), a front cover (2), a steering wheel (4), a pair of drive wheels (5), a cleaning mechanism, a filtering mechanism and a detection and temperature regulation mechanism. The front cover (2) is connected to the main body (1). The pair of drive wheels (5) are installed on both sides of the main body (1). The steering wheel (4) is installed at the bottom of the main body (1) on the side away from the front cover (2). The cleaning mechanism is arranged in the front cover (2). A pressurization chamber (18) is opened in the upper part of the main body (1), and a traction chamber (19) is opened in the lower part of the main body (1). The filtering mechanism is arranged in the pressurization chamber (18) and the traction chamber (19). The detection and temperature regulation mechanism is installed on the top of the main body (1).

2. The substrate temperature detection device with temperature difference regulation function for soilless cultivation according to claim 1, wherein: The cleaning mechanism includes a double - rotation - direction brush roller (6) and a pair of side brush rollers (14). A pair of side support plates (3) are symmetrically arranged on both sides of the front cover (2). Each side support plate (3) is provided with a motor chamber, and a first motor is arranged in the motor chamber. The pair of side brush rollers (14) are respectively connected to the first motor. A driving bevel gear (13) is arranged on one side of each side brush roller (14) away from the first motor.

3. The substrate temperature detection device with a temperature difference regulation function for soilless cultivation according to claim 2, characterized in that: A mandrel (7) is rotatably installed on the pair of side support plates (3). Driven bevel gears (12) are installed at both ends of the mandrel (7). The driven bevel gears (12) are meshed with the driving bevel gears (13). A sliding key (8) is arranged on the mandrel (7). The double - rotation - direction brush roller (6) is slidably sleeved on the mandrel (7) through the sliding key (8). A side adapter (9) is rotatably installed on one side of the double - rotation - direction brush roller (6).

4. The substrate temperature detection device with temperature difference regulation function for soilless cultivation according to claim 3, wherein: A slip ring (10) is connected to the side adapter (9). A cylindrical pin (11) is eccentrically arranged on the driving bevel gear (13) near the slip ring (10). The cylindrical pin (11) is slidably sleeved in the slip ring (10).

5. The substrate temperature detection device with a temperature difference regulation function for soilless cultivation according to claim 1, characterized in that: The filtering mechanism includes a filter cloth (15), several tension rollers (32) and a scraper (31). The filter cloth (15) surrounds and passes through the pressurization chamber (18) and the traction chamber (19). The several tension rollers (32) are rotatably installed in the pressurization chamber (18) and the traction chamber (19). The several tension rollers (32) tension the filter cloth (15). A second motor is arranged on one side of a tension roller (32). The second motor is arranged in the main body (1). The scraper (31) is installed in the pressurization chamber (18). The scraper (31) is in contact with the filter cloth (15).

6. The substrate temperature detection device with temperature difference regulation function for soilless cultivation according to claim 5, characterized in that: A through - slot is opened at the upper end of the main body (1). The through - slot is communicated with the pressurization chamber (18). A sealing cover (30) is arranged at the through - slot. A pressurization pump is installed inside the main body (1). A water level sensor is arranged at the junction of the pressurization chamber (18) and the traction chamber (19). The water level sensor and the pressurization pump are connected to a control system through a circuit. The air - suction end of the pressurization pump is communicated with the outside of the main body (1), and the air - pumping end of the pressurization pump is communicated with the inside of the pressurization chamber (18).

7. A substrate temperature detection device with a temperature difference regulation function for soilless cultivation according to claim 5, characterized in that: The detection and temperature regulation mechanism includes a pumping jacket (16), a pair of shaft-type gears (17), and a pair of temperature control through pipes (22). The pumping jacket (16) is arranged in the traction cabin (19), and the opening of the pumping jacket (16) is in contact with the filter cloth (15). A pair of the shaft-type gears (17) are rotatably installed in the traction cabin (19), and the pair of shaft-type gears (17) are located inside the pumping jacket (16) and are meshed with each other. The sides of the two shaft-type gears (17) away from each other are in sealed contact with the pumping jacket (16). One end of a shaft-type gear (17) is equipped with a third motor, and the third motor is arranged in the main body (1).

8. A substrate temperature detection device with a temperature difference regulation function for soilless cultivation according to claim 7, characterized in that: On both sides of the main body (1) corresponding to the pumping jacket (16), water supply channels (20) are provided. Each water supply channel (20) and the temperature control through pipe (22) are connected through a connecting pipe (21). Inside each temperature control through pipe (22), several heat conduction cylinders (26) are evenly distributed horizontally. Each heat conduction cylinder (26) is rotatably connected to the temperature control through pipe (22). On one side of each heat conduction cylinder (26), a small gear (25) is provided. Inside the temperature control through pipe (22), an electric push rod (23) and a rack (24) are also provided. The rack (24) is connected to the piston rod of the electric push rod (23), and the rack (24) is in contact with each small gear (25).

9. The substrate temperature detection device with temperature difference regulation function for soilless cultivation according to claim 8, wherein: On the outer contour of one-third of each heat conduction cylinder (26), a heat insulation tile (27) is provided. Inside each heat conduction cylinder (26), a semiconductor refrigeration sheet (28) is provided. The refrigeration end and the heating end of the semiconductor refrigeration sheet (28) are both in contact with the inner wall of the heat conduction cylinder (26) through heat conduction fins (29).

10. A substrate temperature detection device with a temperature difference control function for soilless cultivation according to claim 9, characterized in that: A temperature sensor is provided on the main body (1), and the temperature sensor and the semiconductor refrigeration sheet (28) are electrically connected to the control system circuit.

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