CN215270208U - Liquid supply mechanism, medicine box device, rack device and moving platform - Google Patents

Abstract

The application discloses supply liquid mechanism, medical kit device, frame device and moving platform. The liquid supply mechanism can be connected with a medicine box, and the medicine box comprises a liquid storage cavity; the liquid supply mechanism comprises a power pump, a liquid supply pipe, a switch valve assembly and a detection device, wherein the power pump comprises a liquid inlet connecting part and a liquid outlet connecting part, and the liquid inlet connecting part is communicated with a liquid storage cavity; the liquid supply pipe comprises a backflow branch and a spraying branch, one end of the backflow branch and one end of the spraying branch are respectively communicated with the liquid outlet connecting part, and the other end of the backflow branch is used for being communicated with the medicine box; the switch valve assembly is arranged on the liquid supply pipe to respectively control the opening or closing of the backflow branch and the spraying branch; the detection device is used for detecting whether the gas in the power pump is exhausted. The liquid supply mechanism is applied to a medicine box device, a rack device or a mobile platform, and can reduce the waste phenomenon of liquid medicine.

Description

Liquid supply mechanism, medicine box device, rack device and moving platform

Technical Field

The present application relates to the field of electronic devices, and in particular, to a liquid supply mechanism, a medicine box device, a rack device, and a mobile platform.

Background

As mobile platforms (e.g., unmanned aerial vehicles, unmanned vehicles, etc.) have become more mature in agriculture, more and more farms are beginning to use mobile platforms for plant protection operations. At present, the plant protection operation is generally carried out by adopting a spraying mode, so that the agricultural liquid carried by the plant protection operation needs to be sprayed.

However, in the related art, when the liquid supply mechanism of the mobile platform is used, the phenomenon of liquid medicine waste exists.

SUMMERY OF THE UTILITY MODEL

The application provides a supply liquid mechanism, medical kit device, frame device and moving platform, can reduce the extravagant phenomenon of liquid medicine.

The technical scheme is as follows:

according to a first aspect of the embodiments of the present application, there is provided a liquid supply mechanism of a mobile platform, connectable to a medicine box, the medicine box including a liquid storage chamber; the liquid supply mechanism comprises a power pump, a liquid supply pipe, a switch valve assembly and a detection device, wherein the power pump comprises a liquid inlet connecting part and a liquid outlet connecting part, and the liquid inlet connecting part is communicated with a liquid storage cavity; the liquid supply pipe comprises a backflow branch and a spraying branch, one end of the backflow branch and one end of the spraying branch are respectively communicated with the liquid outlet connecting part, and the other end of the backflow branch is used for being communicated with the medicine box; the switch valve assembly is arranged on the liquid supply pipe to respectively control the opening or closing of the backflow branch and the spraying branch; the detection device is used for detecting whether the gas in the power pump is exhausted.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

when the liquid supply mechanism is applied to the mobile platform, the liquid inlet connecting part is communicated with the liquid storage cavity, and the other end of the spraying branch is communicated with a spraying device of the mobile platform. When the operation is sprayed to needs, can close the branch road of spraying through switch valve subassembly earlier to open the backward flow branch road, then the power pump action, make the interior gas of power pump carry to the backward flow branch road along with the liquid medicine, and utilize the backward flow branch road to flow back to in the medicine case, the gas in this in-process can discharge the power pump, can not cause the liquid medicine extravagant again. Meanwhile, the detection device can be used for detecting whether the gas in the power pump is exhausted in time, if the gas is exhausted, the liquid pressure output by the power pump can be larger than a preset value, an operator can be reminded of operating the power pump on the next step, or the detection information is directly sent to the controller, and the power pump is closed through the controller, so that the next step of action can be conveniently carried out. So, utilize the confession liquid mechanism of this application can avoid the liquid medicine extravagant promptly, can in time carry out action on next step again to improve and spray the operating efficiency.

According to a second aspect of the embodiments of the present application, there is also provided a medicine box device, including a medicine box and the liquid supply mechanism of the above-mentioned moving platform, where the medicine box includes a liquid storage chamber.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

when the medicine box device is used, the spraying branch can be closed through the switch valve assembly firstly, the backflow branch is opened, then the power pump acts, gas in the power pump can be conveyed to the backflow branch along with liquid medicine, the backflow branch flows back into the medicine box, the gas in the power pump can be discharged in the process, and the waste of the liquid medicine cannot be caused. Meanwhile, whether the gas in the power pump is exhausted or not can be timely detected by using the detection device, if the gas is exhausted, the liquid pressure output by the power pump can be larger than a preset value, the next action can be carried out, and the spraying operation efficiency can be improved.

According to a third aspect of the embodiments of the present application, there is further provided a rack apparatus, including the rack and the liquid supply mechanism of the above-mentioned mobile platform, wherein the rack is provided with an installation part for installing the medicine box, and the liquid supply mechanism is provided in the rack.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

when the rack device is used, the liquid supply mechanism is arranged on the rack, the medicine box is fixed on the rack through the mounting portion, the liquid inlet connecting portion is communicated with the liquid storage cavity, and the other end of the spraying branch is communicated with a spraying device of the mobile platform. When the operation is sprayed to needs, can close the branch road of spraying through switch valve subassembly earlier to open the backward flow branch road, then the power pump action, make the interior gas of power pump carry to the backward flow branch road along with the liquid medicine, and utilize the backward flow branch road to flow back to in the medicine case, the gas in this in-process can discharge the power pump, can not cause the liquid medicine extravagant again. Meanwhile, the detection device can be used for detecting whether the gas in the power pump is exhausted in time, if the gas is exhausted, the liquid pressure output by the power pump can be larger than a preset value, an operator can be reminded of operating the power pump on the next step, or the detection information is directly sent to the controller, and the power pump is closed through the controller, so that the next step of action can be conveniently carried out. Therefore, the frame device can avoid the waste of the liquid medicine and can timely perform the next action so as to improve the spraying efficiency.

According to a fourth aspect of the embodiments of the present application, there is further provided a mobile platform, including a medicine box and the above-mentioned rack device, where the medicine box is fixedly arranged on the rack through the mounting portion.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

during the above-mentioned moving platform, feed liquor connecting portion and stock solution chamber intercommunication spray the branch road other end and be used for communicating with moving platform's spraying device. When the operation is sprayed to needs, can close the branch road of spraying through switch valve subassembly earlier to open the backward flow branch road, then the power pump action, make the interior gas of power pump carry to the backward flow branch road along with the liquid medicine, and utilize the backward flow branch road to flow back to in the medicine case, the gas in this in-process can discharge the power pump, can not cause the liquid medicine extravagant again. Meanwhile, the detection device can be used for detecting whether the gas in the power pump is exhausted in time, if the gas is exhausted, the liquid pressure output by the power pump can be larger than a preset value, an operator can be reminded of operating the power pump on the next step, or the detection information is directly sent to the controller, and the power pump is closed through the controller, so that the next step of action can be conveniently carried out. So, the moving platform of this application can avoid the liquid medicine extravagant promptly, can in time carry out action on next step again to improve and spray the operating efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Brief description of the drawingsthe accompanying drawings, which form a part hereof, are provided to provide a further understanding of the present application, and are included to explain an illustrative embodiment of the present application and a description thereof and are not to be construed as limiting the present application.

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a mobile platform shown in an embodiment.

Fig. 2 is an exploded view of the mobile platform shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of the mobile platform shown in fig. 1.

FIG. 4 is a schematic cross-sectional view of the liquid supply mechanism shown in FIG. 2.

FIG. 5 is a partial sectional view of the liquid supply mechanism shown in one embodiment (the main flow passage is in a closed state).

Fig. 6 is a schematic view of the primary flow passage shown in fig. 5 in an open state.

FIG. 7 is a partial cross-sectional view of a liquid supply mechanism in another embodiment.

FIG. 8 is a schematic cross-sectional view of a liquid supply mechanism in another embodiment.

Fig. 9 is a schematic sectional view of the medicine-box apparatus shown in the embodiment.

Description of reference numerals:

10. a rack device; 100. a frame; 110. an installation part; 200. a spraying device; 300. a liquid supply mechanism; 310. a power pump; 311. a liquid inlet connecting part; 312. a liquid outlet connecting part; 313. a liquid inlet pipe; 320. a liquid supply tube; 321. a reflux branch; 322. a spraying branch; 330. a switch valve assembly; 331. a first on-off valve; 301. a main flow channel; 302. a pressure relief flow passage; 303. a valve core; 332. a second on-off valve; 333. a pressure relief valve; 334. a pressure relief pipe; 335. a three-way valve; 340. a detection device; 341. a flow meter; 342. a current detection element; 20. a medicine chest; 21. a liquid storage cavity; 22. an air cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the disclosure, are intended for purposes of illustration only and are not intended to limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

At present, the mobile platform carries out the advantage of plant protection operation and lies in can reducing the intensity of labour and the spraying efficiency height of traditional artifical plant protection operation, and the area of operation is big more, can reduce the cost of labor more. Therefore, more and more farms grown in large scale use mobile platforms for plant protection operations. With the improvement of environmental protection requirements, the standards of spraying systems from leaking are becoming stricter in various countries. For example, the domestic requirement is that the number of leaked liquid drops cannot exceed 5 drops after stopping spraying for 5 seconds, the Japan requirement is that the spraying system can stop spraying within 1 second, and then 1 drop of liquid medicine is not allowed to leak. However, due to the action of gravity, the nozzles connected to the power pump generally have the problem of dripping, i.e. the nozzles will also leak liquid when the spraying operation is stopped. The leakage wastes the liquid medicine and causes pollution to the environment.

In order to solve the problem that the nozzle still leaks after the spraying operation is stopped, a normally closed pressure switch (such as a pressure release valve) is arranged on the nozzle, and when the pressure of liquid in the pipeline is greater than a preset value (such as 0.2MPa), the pressure switch can be opened. Therefore, when the power pump is turned off and spraying is stopped, the pressure switch can be automatically turned off, so that the leakage can be prevented.

However, in the practical application process, when air exists in the pump cavity of the power pump, the pressure of the liquid in the pipeline is difficult to be larger than a preset value (such as 0.2MPa), so that the pressure switch cannot be pushed open, the pressure switch needs to be manually opened firstly, and after the air in the power pump is exhausted, the pressure switch can be opened by means of the hydraulic pressure, so that normal spraying is realized. Therefore, in the exhaust process, the liquid medicine can be sprayed on the ground, and the waste of the liquid medicine is caused.

Therefore, a mobile platform is needed to be provided, which can avoid the waste of the liquid medicine in the exhaust process, and can timely know the exhaust condition to execute the next spraying step, so as to improve the spraying efficiency.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings, and features in the following embodiments may be combined with each other without conflict.

Fig. 1 to 4 are structural views of a mobile platform according to an embodiment. Fig. 1 is a schematic structural diagram of a mobile platform shown in an embodiment. Fig. 2 is an exploded view of the mobile platform shown in fig. 1. Fig. 3 is a schematic cross-sectional view of the mobile platform shown in fig. 1. FIG. 4 is a schematic cross-sectional view of the liquid supply mechanism shown in FIG. 2.

As shown in fig. 1 and 2, in the present embodiment, a mobile platform is provided, which includes a rack apparatus 10 and a medicine box 20, the rack apparatus 10 includes a rack 100, a spraying device 200, and a liquid supply mechanism 300, the rack 100 is provided with a mounting portion 110, the spraying device 200 and the liquid supply mechanism 300 are both disposed on the rack 100, the medicine box 20 is fixedly disposed on the rack 100 through the mounting portion 110, and the medicine box 20 includes a liquid storage chamber 21.

Referring to fig. 3 and 4, the liquid supply mechanism 300 includes a power pump 310, a liquid supply pipe 320, a switch valve assembly 330 and a detection device 340, the power pump 310 includes a liquid inlet connection portion 311 and a liquid outlet connection portion 312, the liquid inlet connection portion 311 is communicated with the liquid storage cavity 21; the liquid supply pipe 320 comprises a backflow branch 321 and a spraying branch 322, one end of the backflow branch 321 and one end of the spraying branch 322 are respectively communicated with the liquid outlet connecting part 312, the other end of the backflow branch 321 is communicated with the medicine box 20, and the other end of the spraying branch 322 is communicated with the spraying device 200; the switch valve assembly 330 is disposed on the liquid supply pipe 320 to control the opening and closing of the return branch 321 and the spraying branch 322, respectively; and a detection device 340 for detecting whether the gas in the power pump 310 is exhausted.

Thus, when the platform is moved, the liquid inlet connection portion 311 communicates with the liquid storage chamber 21. When spraying operation is required, the spraying branch 322 can be closed through the switch valve assembly 330, the return branch 321 can be opened, and then the power pump 310 operates, so that the gas in the power pump 310 is conveyed to the return branch 321 along with the liquid medicine and flows back to the medicine box 20 through the return branch 321, and in the process, the gas in the power pump 310 can be discharged, and waste of the liquid medicine is avoided. Meanwhile, the detection device 340 can be used for detecting whether the gas in the power pump 310 is exhausted in time, if the gas is exhausted, an operator can be reminded to carry out the next operation, or the detection information is directly sent to the controller, and the power pump 310 is turned off through the controller, so that the next action is conveniently carried out. So, utilize the moving platform of this application can avoid the liquid medicine extravagant promptly, can in time carry out action on next step again to improve and spray the operating efficiency.

In addition, the liquid supply mechanism 300 is integrated into the frame 100, so that the spraying branch 322 and the spraying device 200 can be used only by installing the medicine box 20 after being connected in advance. Thus, in the process of plant protection operation, the spraying branch 322 and the spraying device 200 do not need to be disassembled and assembled, which is beneficial to improving the efficiency of plant protection operation.

In certain embodiments, the mobile platform may include an unmanned aerial vehicle, an automobile, a remote control car, a robot, and the like. When the liquid supply mechanism 300 is applied to an automobile, the frame 100 is a body of the automobile. The vehicle may be an autonomous vehicle or a semi-autonomous vehicle, without limitation. When the liquid supply mechanism 300 is applied to a robot, the frame 100 is a body of the robot.

In some embodiments, as shown in fig. 2, the medicine boxes 20 are removably connected to the mounting portion 110. Thus, the medicine box 20 is detached from the movable platform and the medicine liquid is replenished. For example, when a plurality of medicine boxes 20 are used to cooperate with a moving platform, the liquid medicine of one medicine box 20 can be used up, and another medicine box 20 full of liquid can be replaced immediately to continue plant protection operation, so that the discontinuous time in the plant protection operation process of the moving platform can be reduced, and the plant protection operation speed can be improved.

In addition, the return branch 321 and the liquid inlet connecting portion 311 can be detachably connected to the medicine box 20 in various connection modes, and the specific structure of the return branch includes insertion, screw connection, sleeve connection and the like.

To further improve the reliability and efficiency of exhaust. As shown in fig. 3, in an embodiment, the medicine box 20 further includes an air chamber 22 communicating with the liquid storage chamber 21, and the other end of the return branch 321 is adapted to communicate with the air chamber 22. So, power pump 310 is at the in-process of carrying out the exhaust operation, and exhaust mixture gas-liquid can be earlier through air cavity 22, and air is stayed air cavity 22, and liquid flows back to stock solution chamber 21, realizes gas-liquid separation fast, is favorable to improving exhaust efficiency. In addition, the provision of the air chamber 22 also facilitates the communication of the liquid storage chamber 21 with the outside air pressure to improve the discharging smoothness of the medicine box 20.

In some embodiments, the spray device 200 includes a nozzle (not labeled) and a pressure switch (not labeled) disposed at the nozzle, the nozzle communicating with the spray branch 322 through the pressure switch. Thus, the pressure switch can be opened when the pressure of the liquid in the pipeline is greater than a preset value (such as 0.2 MPa). The pressure switch can be automatically closed when the power pump 310 is turned off to stop spraying, thereby preventing dripping.

The embodiment of the pressure switch includes the relief valve 333, and also includes other switch elements that can be controlled to be turned on and off according to the magnitude of the liquid pressure.

It should be noted that the specific implementation manner of the detecting device 340 may be various, and the detection device may be implemented in a manner of directly or indirectly detecting whether the gas exists or not. Moreover, the detection device 340 can be in communication connection with the controller of the mobile platform to send detection information to the controller, and the power pump 310 is turned off by the controller, so that the on-off of the exhaust operation can be automatically realized, and the labor intensity is reduced. Of course, the detecting device 340 can also convert the detected information into prompt information (such as voice prompt, light prompt, vibration prompt, etc.) to remind the operator to perform the next operation. Therefore, the specific implementation of the detecting device 340 can be various, and is not limited herein.

In one embodiment, the sensing device 340 includes a flow meter 341, and the flow meter 341 is configured to sense the fluid flow rate of the power pump 310. Therefore, the flow meter 341 can detect the liquid flow of the power pump 310 in time to determine whether the gas in the power pump 310 is exhausted; when the power pump 310 reaches a predetermined flow rate, it is determined that the gas in the power pump 310 is exhausted. At this time, the pressure of the liquid output by the power pump 310 can be greater than a preset value, and then the pressure switch can be reopened to open the nozzle.

The specific implementation of the flow meter 341 can be various, such as an anti-corrosion flow meter 341, a differential pressure flow meter 341, an ammonia water flow meter 341, a turbine flow meter 341, an electromagnetic flow meter 341, a fluid oscillation flow meter 341, and the like.

The installation position of the flowmeter 341 can be flexibly selected. In one embodiment, the flow meter 341 is disposed at the liquid inlet connection 311, or the flow meter 341 is disposed near the liquid inlet connection 311. In this way, the flow meter 341 can be installed in the liquid inlet connection portion 311 and the vicinity of the liquid inlet connection portion 311, and the installation is flexible and interference can be effectively avoided. In addition, the flowmeter 341 is mounted near the liquid inlet connection portion 311, which is beneficial to reducing the detection requirement of the flowmeter 341 and reducing the cost of the liquid supply mechanism 300.

Or, in an embodiment, the flow meter 341 is disposed at the liquid outlet connection portion 312, or the flow meter 341 is disposed between the liquid outlet connection portion 312 and the backflow branch 321. In this way, the flow meters 341 can be installed between the liquid outlet connection portion 312 and the return branch 321, and the installation is flexible and can effectively avoid interference. In addition, the flow meter 341 is installed at the liquid outlet connection portion 312 and near the liquid outlet connection portion 312, so that the flow rate of the liquid output by the power pump 310 can be fed back more directly, the detection precision is improved, and whether the gas in the power pump 310 is exhausted or not can be judged more accurately, so that the requirement that the power pump 310 continuously outputs high-pressure liquid is met.

Alternatively, in another embodiment, the detection device 340 further comprises a current detection element 342, and the current detection element 342 is used for detecting the current of the power pump 310. Thus, when the power pump 310 can continuously output the liquid with the pressure greater than or equal to the predetermined pressure (e.g., 0.2MPa), the current of the power pump 310 can be continuously at a predetermined current value greater than or equal to the predetermined current value, and the battery detection element can be used for detecting to determine whether the gas in the power pump 310 is exhausted. If the current detecting unit detects that the current of the power pump 310 is greater than or equal to the preset current value, it can determine that the gas in the power pump 310 is exhausted, so that the power pump 310 can continuously and stably output the liquid with the pressure greater than or equal to the preset pressure (e.g., 0.2 MPa).

Alternatively, as shown in fig. 4, in yet another embodiment, the detecting device 340 includes a flow meter 341 and a current detecting element 342, the flow meter 341 is used for detecting the flow rate of the power pump 310, and the current detecting element 342 is used for detecting the current of the power pump 310; the flow meter 341 is coupled to the current sensing element 342 to determine whether the gas within the power pump 310 is exhausted. Therefore, the flowmeter 341 is matched with the current detection element 342, so that the judgment on whether the gas in the power pump 310 is exhausted is more accurate, and the detection precision and reliability are further improved.

It should be noted that, whether the gas in the power pump 310 is "exhausted" is a relative concept, not an absolute concept, and may be that the gas in the power pump 310 is completely exhausted, or the gas in the power pump 310 is already below a preset threshold (that is, the operation of the power pump 310 with a large flow rate is not interfered, or the pressure of the flow rate output by the power pump 310 meets the use requirement, or the pressure of the flow rate output by the power pump 310 meets the requirement of the continuous output of the high-pressure liquid by the power pump 310), and so on, as long as the hydraulic pressure provided by the power pump 310 can meet the requirement of flushing the pressure switch.

In addition, the power pump 310 includes a pump body, and also includes other members connected to the pump body. Therefore, "detecting whether the gas in the power pump 310 is exhausted" includes detecting whether the gas content in the pump body is exhausted, and also includes detecting whether the gas in the pump body and other components connected to the pump body is exhausted.

As shown in fig. 4, in some embodiments, the power pump 310 further includes a liquid inlet pipe 313, one end of the liquid inlet pipe 313 is communicated with the liquid inlet connection portion 311, the other end of the liquid inlet pipe 313 is used for being communicated with the liquid storage chamber 21, and the detection device 340 is further used for detecting whether the gas in the liquid inlet pipe 313 is exhausted. Thus, the detecting device 340 can detect whether the gas in the pump body and the liquid inlet pipe 313 is exhausted or not at the same time, so as to ensure that the power pump 310 can continuously and stably output the liquid with the preset pressure.

The specific implementation of the switch valve assembly 330 can be varied, as long as it can control the opening or closing of the return branch 321 and the opening or closing of the spray branch 322, respectively. Fig. 4-8 illustrate a structural view of a switch valve assembly 330 in some embodiments. Fig. 4 is a schematic cross-sectional view of the liquid supply mechanism 300 shown in fig. 2. FIG. 5 is a partial cross-sectional view of the liquid supply mechanism 300 according to an embodiment. Fig. 6 is a schematic view of the main flow passage 301 shown in fig. 5 in an open state. FIG. 7 is a partial cross-sectional view of a liquid supply mechanism 300 according to another embodiment. FIG. 8 is a schematic cross-sectional view of a liquid supply mechanism 300 in another embodiment.

In addition to any of the above embodiments, as shown in fig. 4, in an embodiment, the switch valve assembly 330 further includes a first switch valve 331 and a second switch valve 332, the first switch valve 331 is disposed in the return branch 321 to control the opening or closing of the return branch 321. A second on-off valve 332 is disposed in the spray branch 322 to control the spray branch 322 to open or close. In this manner, the opening or closing of the return branch 321 can be controlled by the first on-off valve 331, and the opening or closing of the spray branch 322 can be controlled by the second on-off valve 332. Specifically, when the exhaust operation is performed, the first switching valve 331 is operated to open the return branch 321; the second on-off valve 332 acts to close the spray branch 322; then, the power pump 310 operates to cause the gas in the power pump 310 to be sent to the return path 321 together with the chemical liquid, and to flow back to the medicine tank 20 through the return path 321. If the detection device 340 can detect that the gas in the power pump 310 is exhausted in time, the pressure of the liquid output by the power pump 310 can be greater than a preset value, the first switch valve 331 can be closed so that the return branch 321 is closed, and the power pump 310 can be in a standby state. During actual spraying operation, the second on-off valve 332 is actuated to open the spraying branch 322 so as to facilitate the delivery of the chemical solution to the nozzle for spraying by the power pump 310.

In one example, the first on-off valve 331 is a solenoid valve that is in communication with the power pump 310. Therefore, the electromagnetic valve is in communication connection with the power pump 310, so that the power pump 310 and the electromagnetic valve can be automatically controlled to be switched on and off, and automatic control is realized.

Of course, the second on-off valve 332 may be an electromagnetic valve, and may also be in communication connection with the power pump 310 through a controller (which may be a central controller of a mobile platform, a motion controller, or the like, or a control module on a rack device, or the like) to implement automatic control, so as to reduce the labor intensity of an operator.

In addition, in addition to any one of the above-mentioned embodiments of the first switch valve 331, as shown in fig. 5 and fig. 6, in an embodiment, the first switch valve 331 includes a main flow passage 301, a pressure relief flow passage 302, a valve core 303 disposed in the main flow passage 301, and a pressure relief valve 333 disposed in the pressure relief flow passage 302, wherein the main flow passage 301 and the pressure relief flow passage 302 are respectively communicated with the return branch 321, and at least a part of the valve core 303 is movably disposed in the main flow passage 301 to control the opening and closing of the main flow passage 301; when the main flow passage 301 is in the closed state and the hydraulic pressure in the liquid supply pipe 320 is greater than the preset value, the relief valve 333 is opened, and the liquid outlet connection portion 312 is made to communicate with the medicine box 20 through the relief flow passage 302 and the return branch 321. As such, during venting of power pump 310, spool 303 moves such that primary flow passage 301 is in an open state; after the exhaust is completed, the valve member 303 moves again to close the main flow passage 301. Further, in the spraying operation process, the main flow passage 301 is in a closed state, if the pressure output by the power pump 310 is too large and exceeds a threshold value, the pressure can be released by the pressure release valve 333, and in the pressure releasing process of the pressure release valve 333, the liquid medicine flows into the backflow branch 321 through the pressure release hole and flows back to the medicine box 20 through the backflow branch 321, so that the waste of the liquid medicine can be further avoided.

In addition, the first switching valve 331 has a switching control function and a pressure release function, and can improve assembly efficiency.

Of course, in other embodiments, as shown in fig. 7, the liquid supply mechanism 300 further includes a pressure relief valve 333 and a pressure relief pipe 334, and the pressure relief valve 333 is communicated with the medicine box 20 through the pressure relief pipe 334; the pressure relief valve 333 is arranged in the liquid supply pipe 320 and between the liquid inlet end of the switch valve assembly 330 and the power pump 310, or the pressure relief valve 333 is arranged on the liquid outlet connecting part 312; when the hydraulic pressure in the liquid supply pipe 320 is larger than the preset value, the relief valve 333 opens, and the liquid outlet connection portion 312 is made to communicate with the medicine box 20 through the relief pipe 334. In this way, the pressure relief valve 333 can be flexibly disposed in the liquid supply pipe 320 to achieve overpressure protection. Specifically, in the process of spraying operation, if the pressure output by the power pump 310 is too high and exceeds the threshold value, the pressure can be released by the pressure release valve 333, and in the process of releasing the pressure by the pressure release valve 333, the liquid medicine flows back to the medicine box 20 through the pressure release pipe 334, so that the waste of the liquid medicine can be further avoided.

In another embodiment, as shown in fig. 8, the on-off valve assembly 330 includes a three-way valve 335, the three-way valve 335 being disposed between the spray branch 322, the return branch 321, and the outlet connection 312; when the three-way valve 335 is at the first position, the backflow branch 321 is communicated with the liquid outlet connection part 312, and the spraying branch 322 is closed with the liquid outlet connection part 312; when the three-way valve 335 is in the second position, the return branch 321 is closed from the outlet connection 312, and the spray branch 322 is communicated with the outlet connection 312. In this manner, the opening or closing of the return branch 321 and the opening or closing of the spray branch 322 can be controlled by the three-way valve 335, respectively. Specifically, when the exhaust operation is performed, the three-way valve 335 is at the first position, the return branch 321 is communicated with the liquid outlet connection portion 312, and the spraying branch 322 is closed with the liquid outlet connection portion 312; then, the power pump 310 operates to cause the gas in the power pump 310 to be sent to the return path 321 together with the chemical liquid, and to flow back to the medicine tank 20 through the return path 321. If the detection device 340 can detect that the gas in the power pump 310 is exhausted in time, the pressure of the liquid output by the power pump 310 can be greater than a preset value, so that the power pump 310 can be in a standby state. When the actual spraying operation is performed, the three-way valve 335 is at the second position, the return branch 321 is closed from the liquid outlet connection portion 312, and the spraying branch 322 is communicated with the liquid outlet connection portion 312, so that the spraying branch 322 is opened, and the liquid medicine is conveniently conveyed to the nozzle by the power pump 310 for spraying.

It should be noted that the "liquid inlet pipe 313" may be one of the parts of the module of the "power pump 310", that is, the "liquid inlet pipe and the" other components of the power pump 310 "are assembled into one module and then are assembled modularly; or may be independent of the other components of the power pump 310, and may be separately installed, i.e., may be integrated with the other components of the power pump 310 in the present liquid supply mechanism 300.

Equivalently, the components included in the "mechanism", "device" and "platform" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to the actual situation, and can be assembled in a modularized manner as an independent module; the modules may be assembled separately, and one module may be constructed in the present apparatus. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.

Fig. 9 is a schematic sectional view of the medicine-box arrangement shown in the embodiment. In the present embodiment, there is provided a medicine-box device including a medicine box 20 and the liquid supply mechanism 300 according to any one of the above embodiments, the medicine box 20 including a liquid storage chamber 21.

In this way, the liquid supply mechanism 300 can be integrated into the medicine boxes 20 and assembled or circulated as a single independent module. When the medicine box device is used, the spraying branch 322 can be closed through the switch valve assembly 330, the return branch 321 can be opened, then the power pump 310 operates, so that the gas in the power pump 310 can be conveyed to the return branch 321 along with the medicine liquid, and flows back to the medicine box 20 through the return branch 321, the gas in the power pump 310 can be discharged in the process, and the medicine liquid cannot be wasted. Meanwhile, the detection device 340 can be used for detecting whether the gas in the power pump 310 is exhausted in time, if the gas is exhausted, the pressure of the liquid output by the power pump 310 can be larger than a preset value, the next action can be carried out, and the spraying operation efficiency can be improved.

To further improve the reliability and efficiency of exhaust. In one embodiment, the medicine box 20 further includes an air chamber 22 communicating with the reservoir chamber 21, and the other end of the return branch 321 is adapted to communicate with the air chamber 22. So, at the in-process of carrying out the exhaust operation of power pump 310, exhaust mixture gas-liquid can pass through air cavity 22 earlier, and air is stayed air cavity 22, and liquid flows back to stock solution chamber 21, realizes gas-liquid separation fast, is favorable to improving exhaust efficiency. In addition, the provision of the air chamber 22 also facilitates the communication of the liquid storage chamber 21 with the outside air pressure to improve the discharging smoothness of the medicine box 20.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (16)

1. The utility model provides a mobile platform's confession liquid mechanism, joinable medical kit, the medical kit includes the stock solution chamber, its characterized in that, supply liquid mechanism and include:

the power pump comprises a liquid inlet connecting part and a liquid outlet connecting part, and the liquid inlet connecting part is communicated with the liquid storage cavity;

the liquid supply pipe comprises a backflow branch and a spraying branch, one end of the backflow branch and one end of the spraying branch are respectively communicated with the liquid outlet connecting part, and the other end of the backflow branch is used for being communicated with the medicine box;

the switch valve assembly is arranged on the liquid supply pipe and is used for respectively controlling the opening or closing of the backflow branch and the spraying branch; and

and the detection device is used for detecting whether the gas in the power pump is exhausted.

2. The liquid supply mechanism of claim 1, wherein said sensing device comprises a flow meter for sensing the liquid flow rate of said powered pump.

3. The liquid supply mechanism of claim 2, wherein the flow meter is disposed at or near the liquid inlet connection.

4. The liquid supply mechanism as claimed in claim 2, wherein the flow meter is disposed at the liquid outlet connection portion, or the flow meter is disposed between the liquid outlet connection portion and the return branch.

5. The liquid supply mechanism as claimed in claim 1, wherein the detecting means further comprises a current detecting element for detecting a current of the power pump.

6. The liquid supply mechanism as claimed in claim 1, wherein the detecting means comprises a flow meter for detecting a liquid flow rate of the power pump and a current detecting element for detecting a current of the power pump; the flowmeter is matched with the current detection element to judge whether the gas in the power pump is exhausted.

7. The liquid supply mechanism according to claim 1, wherein the power pump further comprises a liquid inlet pipe, one end of the liquid inlet pipe is communicated with the liquid inlet connecting portion, the other end of the liquid inlet pipe is communicated with the liquid storage cavity, and the detection device is further used for detecting whether the gas in the liquid inlet pipe is exhausted.

8. The liquid supply mechanism of claim 1, wherein the medicine box further comprises an air chamber communicated with the liquid storage chamber, and the other end of the return branch is used for being communicated with the air chamber.

9. The liquid supply mechanism according to claim 1, further comprising a pressure relief valve and a pressure relief pipe, wherein the pressure relief valve is communicated with the medicine box through the pressure relief pipe; the pressure release valve is arranged on the liquid supply pipe and is arranged between the liquid inlet end of the switch valve assembly and the power pump, or the pressure release valve is arranged on the liquid outlet connecting part; when the hydraulic pressure in the liquid supply pipe is larger than a preset value, the pressure release valve is opened, and the liquid outlet connecting part is communicated with the medicine box through the pressure release pipe.

10. The liquid supply mechanism as claimed in any one of claims 1 to 9, wherein the switch valve assembly further comprises a first switch valve and a second switch valve, the first switch valve is disposed in the return branch to control the opening or closing of the return branch; the second switch valve is arranged on the spraying branch to control the spraying branch to be opened or closed.

11. The liquid supply mechanism as claimed in claim 10, wherein the first on-off valve is a solenoid valve, and the solenoid valve is in communication with the power pump.

12. The liquid supply mechanism according to claim 10, wherein the first switch valve comprises a main flow channel, a pressure relief flow channel, a valve core and a pressure relief valve disposed in the pressure relief flow channel, the main flow channel and the pressure relief flow channel are respectively communicated with the return branch, and at least a portion of the valve core is movably disposed in the main flow channel to control the opening and closing of the main flow channel; when the main runner is in a closed state and the hydraulic pressure in the liquid supply pipe is greater than a preset value, the pressure release valve is opened, and the liquid outlet connecting part is communicated with the medicine box through the pressure release runner and the backflow branch.

13. The liquid supply mechanism as claimed in any one of claims 1 to 9, wherein the on-off valve assembly comprises a three-way valve disposed between the spray branch, the return branch and the liquid outlet connection;

when the three-way valve is at a first position, the backflow branch is communicated with the liquid outlet connecting part, and the spraying branch is closed with the liquid outlet connecting part;

when the three-way valve is in the second position, the backflow branch is closed to the liquid outlet connecting part, and the spraying branch is communicated with the liquid outlet connecting part.

14. A medicine box device comprising a medicine box including a liquid storage chamber and the liquid supply mechanism according to any one of claims 1 to 13.

15. A frame device comprising a frame provided with a mounting portion for mounting a medicine box, and a liquid supply mechanism according to any one of claims 1 to 13 provided to the frame.

16. A mobile platform comprising a medicine box and the rack device according to claim 15, wherein the medicine box is fixed to the rack by the mounting portion, and the medicine box comprises a liquid storage chamber.

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