Automatic aeration device

Abstract

The invention relates to the technical field of aeration, in particular to an automatic aeration device which comprises a tray, a short needle insertion assembly, a displacement assembly, a controller and a gas injection assembly, the tray is arranged on the displacement assembly, the short needle insertion assembly is arranged on the side of the displacement assembly, and the displacement assembly is connected with the controller. The gas injection assembly is arranged above the displacement assembly, and the controller is in electric signal connection with the short needle insertion assembly, the displacement assembly and the gas injection assembly. According to the invention, the whole process automation of the aeration operation of the headspace bottle is realized, the blank in the field of aeration automation equipment is filled, the operation amount of aeration work is greatly reduced, and the aeration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aeration, and more particularly to an automatic aeration device. Background Art

[0002] Aeration is a common technical means in sewage treatment. In the laboratory, aeration requires first inserting a short needle with one-way flow into the headspace bottle, which is used to discharge the impurity gas in the headspace bottle, and then inserting a long needle for gas delivery into the headspace bottle, and injecting inert gas into the headspace bottle through the long needle to eliminate the influence of inert gas on the aeration experiment. However, this operation is currently mainly completed manually by experimenters. When the amount of samples to be processed is large, the operation is cumbersome and time-consuming. Therefore, an automated aeration device is needed to improve the efficiency of aeration treatment. Summary of the invention

[0003] The purpose of the present invention is to overcome the disadvantage of the cumbersome manual operation of aeration in the prior art and to provide an automatic aeration device which can automatically aerate a plurality of headspace bottles at the same time.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: An automatic aeration device is provided, comprising a tray, a short needle insertion assembly, a displacement assembly, a controller and a gas injection assembly, wherein the tray is mounted on the displacement assembly, the short needle insertion assembly is mounted beside the displacement assembly, the gas injection assembly is mounted above the displacement assembly, and the controller is connected to the short needle insertion assembly, the displacement assembly and the gas injection assembly via electrical signals.

[0005] Through this arrangement, when the user needs to perform aeration operation on the head space bottles, the user places multiple head space bottles on the tray. At this time, the tray is located at the starting end of the displacement assembly, which is convenient for the user to place the head space bottles. After the head space bottles are placed, the tray detects the number of head space bottles and feeds back to the controller. The controller controls the displacement assembly to drive the tray to move toward the short needle insertion assembly. When the tray moves to the vicinity of the short needle insertion assembly, the controller controls the short needle insertion assembly to insert multiple short needles into multiple head space bottles respectively. Then the controller controls the displacement assembly to continue to drive the tray to move, and the tray moves to the gas injection assembly. The gas injection assembly injects inert gas into the head space bottles, and the impurity gas in the head space bottles is discharged through the pre-inserted short needles that only flow in one direction, thereby completing the aeration work.

[0006] Preferably, the gas injection assembly comprises a gas cylinder and a plurality of aeration tubes, a plurality of aeration needles are provided at the bottom of the aeration tubes, and the plurality of aeration tubes are connected to the gas cylinder.

[0007] Through this arrangement, the gas cylinder fills the plurality of aeration tubes with inert gas, and the aeration needle is used to be inserted into the head space bottle to inject the inert gas.

[0008] Preferably, the aeration pipe is also provided with a flow meter and an electromagnetic flow valve, the aeration pipe is connected to the gas cylinder via the electromagnetic flow valve, the flow meter is communicated with the aeration pipe, and the flow meter and the electromagnetic flow valve are both electrically connected to the controller.

[0009] When the gas cylinder fills the multiple aeration tubes with inert gas, the flow rate input into each aeration tube may be different due to factors such as the inner diameter of the pipeline and the tightness of the connection, resulting in a flow difference of the inert gas input from each aeration tube to the headspace bottle. In order to ensure that all the headspace bottles can complete the aeration operation at the same time, through this setting, the flow meter will monitor the flow in the aeration tube in real time and feed back to the controller. When the controller detects that the flow in a certain aeration tube is too high or too low, the controller controls the electromagnetic flow valve through an electrical signal to perform negative feedback regulation, so that the aeration tube with abnormal flow maintains the same flow level as other aeration tubes, which is beneficial to improving the quality of aeration work.

[0010] Preferably, the aeration pipe is further provided with a pressure relief valve, and the pressure relief valve and the electromagnetic flow valve are respectively installed at both ends of the aeration pipe.

[0011] With this arrangement, when the pressure in an individual aeration pipe exceeds a preset pressure value, the pressure relief valve can adjust it to ensure that the air pressure in all aeration pipes is at the maximum preset pressure.

[0012] Preferably, the tray comprises a heating box and a bracket, wherein the bracket is fixedly mounted on the heating box, the heating box is hollow, and the bracket is provided with a plurality of sockets for hanging headspace bottles.

[0013] With this arrangement, when aeration is performed, the head space bottle is suspended on the bracket, and the body of the head space bottle is located in the heating box. The heating box heats the head space bottle to maintain the temperature in the head space bottle at a preset experimental temperature, which is beneficial to ensure temperature balance during aeration and reduce temperature influencing factors in aeration operation.

[0014] Preferably, the short needle insertion assembly includes a short needle loading tray, a suction head and a first displacement mechanism, the short needle loading tray is provided with a plurality of placement holes, the suction head is mounted on the first displacement mechanism, and the short needle loading tray is mounted next to the first displacement mechanism.

[0015] Through this arrangement, when it is necessary to insert a short needle into the head space bottle, the user first places the short needle needle head in the short needle loading tray, and then the first displacement mechanism drives the suction head to move above the short needle loading tray, and the suction head is pressed down to adsorb the short needle pillow. Then the first displacement mechanism drives the suction head to move to the side of the tray, and the suction head is pressed down to insert the short needle into the head space bottle, completing the pre-insertion process of the short needle.

[0016] Preferably, the displacement assembly includes a second displacement mechanism, a third displacement mechanism and a lifting mechanism, the second displacement mechanism is installed beside the short needle insertion assembly and the gas injection assembly, the lifting mechanism and the third displacement mechanism are both installed at the bottom of the gas injection assembly, the third displacement mechanism is installed on the lifting mechanism, and the third displacement mechanism can be connected to the second displacement mechanism.

[0017] By this arrangement, when the tray is located at the starting end of the second displacement mechanism, the user can place the headspace bottle in the tray. At this time, there is no interference from other components, which is convenient for the user to operate. After the headspace bottle is placed, the second displacement mechanism drives the tray to move and moves to the short needle insertion component to insert the short needle. After the short needle insertion is completed, the second displacement mechanism transfers the tray to the third displacement mechanism, and then the third displacement mechanism moves the tray to just below the gas injection component. Then the lifting mechanism works to drive the third displacement mechanism and the tray to move upward as a whole, so that the headspace bottle on the tray contacts the aeration needle at the bottom of the aeration tube, and the aeration needle is inserted into the headspace bottle. The gas injection component starts to inject inert gas for aeration operation. After the aeration is completed, the lifting mechanism moves downward to make the third displacement mechanism and the second displacement mechanism at the same height. The tray is reset to the starting end of the second displacement mechanism via the third displacement mechanism and the second displacement mechanism, which is convenient for the user to take out the aerated headspace bottle.

[0018] Preferably, the lifting mechanism includes a lifting bracket, a lifting plate, a lifting support, a lifting stud and a lifting motor, a plurality of aeration pipes are fixedly installed above the lifting bracket, the lifting bracket is provided with at least three pillars, the lifting plate and the pillars are both slidably connected, the lifting support is fixedly installed at the bottom of the lifting plate, the lifting stud is threadedly connected to the lifting support, and the lifting stud and the pillar are parallel to each other, the bottom of the lifting stud is rotatably connected to the lifting bracket, and the lifting motor is connected to the lifting stud.

[0019] With this arrangement, when lifting is required, the lifting motor works to drive the lifting stud to rotate, and because the lifting plate is limited by the lifting bracket and cannot rotate, and the lifting support is fixedly connected to the lifting plate, when the lifting stud rotates, the lifting support threadedly connected to the lifting stud will obtain an upward or downward driving force, that is, the lifting stud and the lifting support form a screw nut transmission pair.

[0020] Preferably, the third displacement mechanism includes a driving motor, a conveyor belt, a driving wheel and a driven wheel. The lifting plate is provided with a mounting groove. The driving wheel and the driven wheel are both rotatably connected to the lifting plate. The conveyor belt is sleeved on the driving wheel and the driven wheel. The driving wheel is also connected to the driving motor.

[0021] Preferably, the third displacement mechanism also includes a transmission shaft, and there are two groups of belt transmission pairs consisting of the conveyor belt, the driven wheel and the driving wheel. The two groups of belt transmission pairs are symmetrically arranged, and the two ends of the transmission shaft are respectively fixedly connected to the driving wheel, and the driving motor is connected to the middle part of the transmission shaft.

[0022] Preferably, the second displacement mechanism includes a first displacement section and a second displacement section that are connected, the first displacement section and the second displacement section are perpendicular to each other and their tops are at the same height, the connecting point between the first displacement section and the second displacement section is located beside the first displacement mechanism, and the tail end of the second displacement section is located beside the third displacement mechanism.

[0023] Through this arrangement, when the tray is located at the starting end of the first displacement section, the user can place the headspace bottle on the tray, and then the second displacement mechanism drives the tray to move, and the tray moves to the junction of the first displacement section and the second displacement section. The first displacement mechanism works to insert the short needle into the headspace bottle through the suction head, and then the second displacement mechanism works to send the tray to the end of the second displacement section and transfer it to the third displacement mechanism.

[0024] Preferably, the first displacement mechanism adopts a cylinder displacement structure.

[0025] Preferably, the second displacement mechanism adopts a crawler transmission structure.

[0026] Compared with the prior art, the present invention has the following beneficial effects: (1) The whole process of headspace bottle aeration operation is automated, which greatly reduces the workload of aeration work and improves aeration efficiency.

[0027] (2) The setting of the aeration tube ensures that the flow rate and pressure of the gas filled into each headspace bottle are the same, avoiding uneven aeration progress in the headspace bottle, improving work efficiency and aeration quality.

[0028] (3) By setting the displacement component, the operation area of ​​each aeration process is divided, which is convenient for users to load or unload the headspace bottle and short needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of an automatic aeration device of the present invention; Figure 2 This is a schematic diagram of the lifting mechanism structure of an automatic aeration device of the present invention; Figure 3 This is a schematic diagram of the structure of the third displacement mechanism of an automatic aeration device of the present invention.

[0030] The illustrations are as follows: 1. Tray; 2. Short needle insertion assembly; 21. Short needle loading tray; 22. Suction head; 23. First displacement mechanism; 3. Displacement assembly; 31. Second displacement mechanism; 311. First displacement section; 312. Second displacement section; 32. Third displacement mechanism; 321. Driving motor; 322. Conveyor belt; 323. Driving wheel; 324. Driven wheel; 325. Transmission shaft; 33. Lifting mechanism; 331. Lifting bracket; 332. Lifting plate; 333. Lifting support; 334. Lifting stud; 335. Lifting motor; 4. Gas injection assembly; 41. Gas cylinder; 42. Aeration pipe; 43. Aeration needle; 44. Flow meter; 45. Electromagnetic flow valve; 46. Pressure relief valve. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Example 1 like Figures 1 to 3The figure shows a first embodiment of an automatic aeration device of the present invention, comprising a tray 1, a short needle insertion assembly 2, a displacement assembly 3, a controller and a gas injection assembly 4. The tray 1 is mounted on the displacement assembly 3, the short needle insertion assembly 2 is mounted beside the displacement assembly 3, the gas injection assembly 4 is mounted above the displacement assembly 3, and the controller is connected to the short needle insertion assembly 2, the displacement assembly 3, and the gas injection assembly 4 by electrical signals.

[0034] Through this arrangement, when the user needs to perform aeration operation on the headspace bottles, the user places multiple headspace bottles on the tray 1. At this time, the tray 1 is located at the starting end of the displacement component 3, which is convenient for the user to place the headspace bottles; after the headspace bottles are placed, the tray 1 detects the number of headspace bottles and feeds back to the controller. The controller controls the displacement component 3 to work and drive the tray 1 to move toward the short needle insertion component 2. When the tray 1 moves to the vicinity of the short needle insertion component 2, the controller controls the short needle insertion component 2 to work and insert multiple short needles into multiple headspace bottles respectively. Then the controller controls the displacement component 3 to continue to drive the tray 1 to move, and the tray 1 moves to the gas injection component 4. The gas injection component 4 injects inert gas into the headspace bottle, and the impurity gas in the headspace bottle is discharged through the pre-inserted short needles that only flow in one direction, thereby completing the aeration work.

[0035] As an embodiment of the present invention, the gas injection assembly 4 includes a gas cylinder 41 and a plurality of aeration tubes 42 . A plurality of aeration needles 43 are provided at the bottom of the aeration tubes 42 . The plurality of aeration tubes 42 are connected to the gas cylinder 41 .

[0036] Through this arrangement, the gas cylinder 41 fills the plurality of aeration tubes 42 with inert gas, and the aeration needle 43 is used to be inserted into the headspace bottle to inject the inert gas.

[0037] As an embodiment of the present invention, a flow meter 44 and an electromagnetic flow valve 45 are also provided on the aeration pipe 42. The aeration pipe 42 is connected to the gas cylinder 41 through the electromagnetic flow valve 45. The flow meter 44 is connected to the aeration pipe 42. The flow meter 44 and the electromagnetic flow valve 45 are both electrically connected to the controller.

[0038] When the gas cylinder 41 fills the multiple aeration tubes 42 with inert gas, the flow rates input into each aeration tube 42 may be different due to factors such as the inner diameter of the pipeline and the tightness of the connection, resulting in a flow difference of the inert gas input from each aeration tube 42 to the headspace bottle. In order to ensure that all headspace bottles can complete the aeration operation at the same time, through this setting, the flow meter 44 will monitor the flow in the aeration tube 42 in real time and feed back to the controller. When the controller detects that the flow in a certain aeration tube 42 is too high or too low, the controller controls the electromagnetic flow valve 45 through an electrical signal to perform negative feedback regulation, so that the aeration tube 42 with abnormal flow is maintained at the same flow level as other aeration tubes 42, which is beneficial to improving the quality of aeration work.

[0039] As an embodiment of the present invention, the aeration pipe 42 is further provided with a pressure relief valve 46 , and the pressure relief valve 46 and the electromagnetic flow valve 45 are respectively installed at both ends of the aeration pipe 42 .

[0040] By means of this arrangement, when the pressure in an individual aeration pipe 42 exceeds a preset pressure value, the pressure relief valve 46 can adjust it to ensure that the air pressure in all aeration pipes 42 is at the maximum preset pressure.

[0041] Example 2 The following is a second embodiment of an automatic aeration device of the present invention. This embodiment is similar to the first embodiment, except that further limitations are imposed on the tray 1, the short needle insertion assembly 2 and the motion assembly.

[0042] As an embodiment of the present invention, the tray 1 includes a heating box and a bracket. The bracket is fixedly mounted on the heating box. The heating box is hollow and a plurality of sockets for hanging headspace bottles are provided on the bracket.

[0043] With this setting, when aeration is performed, the headspace bottle is suspended on the bracket, and the body of the headspace bottle is located in the heating box. The heating box heats the headspace bottle to maintain the temperature in the headspace bottle at the preset experimental temperature, which is beneficial to ensure the temperature balance during the aeration process and reduce the temperature influencing factors in the aeration operation.

[0044] As an embodiment of the present invention, the short needle insertion assembly 2 includes a short needle loading tray 21, a suction head 22 and a first displacement mechanism 23. The short needle loading tray 21 is provided with a plurality of placement holes, the suction head 22 is installed on the first displacement mechanism 23, and the short needle loading tray 21 is installed next to the first displacement mechanism 23.

[0045] Through this arrangement, when it is necessary to insert a short needle into the headspace bottle, the user now places the short needle needle head in the short needle loading tray 21, and then the first displacement mechanism 23 drives the suction head 22 to move to above the short needle loading tray 21, and the suction head 22 is pressed down to adsorb the short needle pillow, and then the first displacement mechanism 23 drives the suction head 22 to move to the side of the tray 1, and the suction head 22 is pressed down to insert the short needle into the headspace bottle, completing the pre-insertion process of the short needle.

[0046] As an embodiment of the present invention, the displacement assembly 3 includes a second displacement mechanism 31, a third displacement mechanism 32 and a lifting mechanism 33. The second displacement mechanism 31 is arranged beside the short needle insertion assembly 2 and the gas injection assembly 4. The lifting mechanism 33 and the third displacement mechanism 32 are both arranged at the bottom of the gas injection assembly 4. The third displacement mechanism 32 is arranged on the lifting mechanism 33, and the third displacement mechanism 32 can be connected to the second displacement mechanism 31.

[0047] By this arrangement, when the tray 1 is located at the starting end of the second displacement mechanism 31, the user can place the headspace bottle in the tray 1. At this time, there is no interference from other components, which is convenient for the user to operate. After the headspace bottle is placed, the second displacement mechanism 31 drives the tray 1 to move and moves to the short needle insertion component 2 for short needle insertion. After the short needle insertion is completed, the second displacement mechanism 31 transfers the tray 1 to the third displacement mechanism 32, and then the third displacement mechanism 32 moves the tray 1 to just below the gas injection component 4. Then the lifting mechanism 33 works to drive the third displacement mechanism 32 and the tray 1 to move upward as a whole, so that the headspace bottle on the tray 1 contacts the aeration needle 43 at the bottom of the aeration tube 42, and the aeration needle 43 is inserted into the headspace bottle. The gas injection component 4 starts to inject inert gas for aeration operation. After the aeration is completed, the lifting mechanism 33 moves downward to make the third displacement mechanism 32 and the second displacement mechanism 31 at the same height. The tray 1 is reset to the starting end of the second displacement mechanism 31 through the third displacement mechanism 32 and the second displacement mechanism 31, which is convenient for the user to take out the aerated headspace bottle.

[0048] As an embodiment of the present invention, the lifting mechanism 33 includes a lifting bracket 331, a lifting plate 332, a lifting support 333, a lifting stud 334 and a lifting motor 335. A plurality of aeration pipes 42 are fixedly installed above the lifting bracket 331. The lifting bracket 331 is provided with at least three pillars. The lifting plate 332 is slidably connected to the pillars. The lifting support 333 is fixedly installed at the bottom of the lifting plate 332. The lifting stud 334 is threadedly connected to the lifting support 333, and the lifting stud 334 and the pillars are parallel to each other. The bottom of the lifting stud 334 is rotatably connected to the lifting bracket 331, and the lifting motor 335 is connected to the lifting stud 334.

[0049] With this arrangement, when lifting is required, the lifting motor 335 works to drive the lifting stud 334 to rotate. Because the lifting plate 332 is limited by the lifting bracket 331 and cannot rotate, the lifting support 333 is fixedly connected to the lifting plate 332. Therefore, when the lifting stud 334 rotates, the lifting support 333 threadedly connected to the lifting stud 334 will obtain an upward or downward driving force, that is, the lifting stud 334 and the lifting support 333 form a screw-nut transmission pair.

[0050] As an embodiment of the present invention, the third displacement mechanism 32 includes a driving motor 321, a conveyor belt 322, a driving wheel 323 and a driven wheel 324. A mounting groove is provided on the lifting plate 332. The driving wheel 323 and the driven wheel 324 are both rotatably connected to the lifting plate 332. The conveyor belt 322 is sleeved on the driving wheel 323 and the driven wheel 324. The driving wheel 323 is also connected to the driving motor 321.

[0051] As an embodiment of the present invention, the third displacement mechanism 32 also includes a transmission shaft 325. There are two groups of belt transmission pairs consisting of a conveyor belt 322, a driven wheel 324 and a driving wheel 323. The two groups of belt transmission pairs are symmetrically arranged. The two ends of the transmission shaft 325 are respectively fixedly connected to the driving wheel 323, and the driving motor 321 is connected to the middle part of the transmission shaft 325.

[0052] Example 3 The following is a third embodiment of an automatic aeration device of the present invention. This embodiment is similar to the first embodiment, except that further limitations are imposed on the first displacement mechanism 23 and the second displacement mechanism 31 .

[0053] As an embodiment of the present invention, the second displacement mechanism 31 includes a first displacement section 311 and a second displacement section 312 that are connected. The first displacement section 311 and the second displacement section 312 are perpendicular to each other and their tops are at the same height. The connecting point between the first displacement section 311 and the second displacement section 312 is located beside the first displacement mechanism 23, and the tail end of the second displacement section 312 is located beside the third displacement mechanism 32.

[0054] Through this arrangement, when the tray 1 is located at the starting end of the first displacement section 311, the user can place the headspace bottle on the tray 1, and then the second displacement mechanism 31 drives the tray 1 to move, and the tray 1 moves to the junction of the first displacement section 311 and the second displacement section 312. The first displacement mechanism 23 works to insert the short needle into the headspace bottle through the suction head 22, and then the second displacement mechanism 31 works to send the tray 1 to the tail end of the second displacement section 312 and transfer it to the third displacement mechanism 32.

[0055] As an embodiment of the present invention, the first displacement mechanism 23 adopts a cylinder displacement structure, and the second displacement mechanism 31 adopts a crawler transmission structure.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An automatic aeration device, characterized in that: The invention comprises a tray (1), a short needle insertion component (2), a displacement component (3), a controller and a gas injection component (4), wherein the tray (1) is mounted on the displacement component (3), the short needle insertion component (2) is mounted beside the displacement component (3), the gas injection component (4) is mounted above the displacement component (3), and the controller is connected to the short needle insertion component (2), the displacement component (3) and the gas injection component (4) via electrical signals.

2. The automatic aeration device according to claim 1, characterized in that: The gas injection assembly (4) comprises a gas cylinder (41) and a plurality of aeration tubes (42). A plurality of aeration needles (43) are provided at the bottom of the aeration tubes (42). The plurality of aeration tubes (42) are in communication with the gas cylinder (41).

3. The automatic aeration device according to claim 2, characterized in that: The aeration pipe (42) is also provided with a flow meter (44) and an electromagnetic flow valve (45); the aeration pipe (42) is connected to the gas cylinder (41) via the electromagnetic flow valve (45); the flow meter (44) is in communication with the aeration pipe (42); and the flow meter (44) and the electromagnetic flow valve (45) are both electrically connected to the controller.

4. The automatic aeration device according to claim 3, characterized in that: The aeration pipe (42) is also provided with a pressure relief valve (46), and the pressure relief valve (46) and the electromagnetic flow valve (45) are respectively installed at two ends of the aeration pipe (42).

5. The automatic aeration device according to claim 1, characterized in that: The tray (1) comprises a heating box and a bracket, wherein the bracket is fixedly mounted on the heating box, the heating box is hollow, and the bracket is provided with a plurality of sockets for hanging headspace bottles.

6. The automatic aeration device according to claim 1, characterized in that: The short needle insertion assembly (2) comprises a short needle loading tray (21), a suction head (22) and a first displacement mechanism (23); the short needle loading tray (21) is provided with a plurality of placement holes; the suction head (22) is mounted on the first displacement mechanism (23); and the short needle loading tray (21) is mounted beside the first displacement mechanism (23).

7. The automatic aeration device according to any one of claims 1 to 6, characterized in that: The displacement assembly (3) comprises a second displacement mechanism (31), a third displacement mechanism (32) and a lifting mechanism (33); the second displacement mechanism (31) is arranged beside the short needle insertion assembly (2) and the gas injection assembly (4); the lifting mechanism (33) and the third displacement mechanism (32) are both arranged at the bottom of the gas injection assembly (4); the third displacement mechanism (32) is arranged on the lifting mechanism (33), and the third displacement mechanism (32) is communicable with the second displacement mechanism (31).

8. The automatic aeration device according to claim 7, characterized in that: The lifting mechanism (33) comprises a lifting bracket (331), a lifting plate (332), a lifting support (333), a lifting stud (334) and a lifting motor (335); a plurality of aeration pipes (42) are fixedly mounted above the lifting bracket (331); the lifting bracket (331) is provided with at least three pillars; the lifting plate (332) and the pillars are both slidably connected; the lifting support (333) is fixedly mounted on the bottom of the lifting plate (332); the lifting stud (334) is threadedly connected to the lifting support (333); the lifting stud (334) and the pillar are parallel to each other; the bottom of the lifting stud (334) is rotatably connected to the lifting bracket (331); and the lifting motor (335) is connected to the lifting stud (334).

9. The automatic aeration device according to claim 8, characterized in that: The third displacement mechanism (32) comprises a driving motor (321), a conveyor belt (322), a driving wheel (323) and a driven wheel (324); a mounting groove is provided on the lifting plate (332); the driving wheel (323) and the driven wheel (324) are both rotatably connected to the lifting plate (332); the conveyor belt (322) is sleeved on the driving wheel (323) and the driven wheel (324); and the driving wheel (323) is also connected to the driving motor (321).

10. The automatic aeration device according to claim 7, characterized in that: The second displacement mechanism (31) comprises a first displacement section (311) and a second displacement section (312) which are connected. The first displacement section (311) and the second displacement section (312) are perpendicular to each other and their tops are at the same height. The connecting point of the first displacement section (311) and the second displacement section (312) is located beside the first displacement mechanism (23), and the tail end of the second displacement section (312) is located beside the third displacement mechanism (32).

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