Pneumatic grain catapult

Abstract

The utility model provides a pneumatic food catapult, and relates to the technical field of pet devices, the catapult comprises a shell, and a feeding device, a pneumatic catapulting device, a cleaning device, a catapulting channel and a controller mounted in the shell; wherein the feeding device is used for feeding grains into the ejection channel; the pneumatic ejection device is used for ejecting the grains in the ejection channel out of the shell; the cleaning device is used for cleaning the ejection channel; and the controller is connected with the pneumatic ejection device and the cleaning device. According to the grain ejector, the technical problem that the service life of the grain ejector is easily affected by grain fines in an existing grain ejector with potential energy of an elastic piece as a power source for grain ejection can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of pet equipment, and in particular to a pneumatic food ejector. Background Art

[0002] With the improvement of living standards and the popularization of pet feeding, traditional single-function pet toys or feeders can no longer meet the diversified needs of the current market. Pet feeders that meet the needs of pet entertainment, feeding, and interaction between pets and owners are gradually entering the market. However, in the prior art, food ejectors used for pet feeding and interaction between pets and owners mainly use the potential energy of elastic parts, such as compression springs, as the power source for food ejection. However, using the potential energy of elastic parts as the power source for ejecting food makes a lot of noise when ejecting food, and because it needs to cooperate with a certain gear structure to achieve the resetting of the elastic parts, the fine grains, impurities, etc. of the food are easily left in the gear structure, affecting its service life. Utility Model Content

[0003] The purpose of the present application is to provide a pneumatic grain ejector to improve the technical problem that grain fines in the existing grain ejector, which uses the potential energy of an elastic member as a power source for grain ejection, easily affect its service life.

[0004] In order to achieve the above technical purpose, the present application provides a pneumatic grain ejector, including: a housing and a feeding device installed in the housing, a pneumatic ejection device, a cleaning device, an ejection channel and a controller;

[0005] The housing is provided with a feeding port, one end of the feeding device is connected to the feeding port, and the other end is connected to the ejection channel, and the feeding device is used to feed food into the ejection channel;

[0006] The pneumatic ejection device is located at one end of the ejection channel and is used to eject the food in the ejection channel out of the shell; the air outlet of the cleaning device is connected to the ejection channel;

[0007] The controller is connected with the feeding device, the pneumatic ejection device and the cleaning device.

[0008] Furthermore, in some embodiments of the present application, the pneumatic ejection device utilizes a pneumatic ejector rod to eject the grain; and the cleaning device utilizes gas blowing to clean the ejection channel of the grain.

[0009] Further, in some embodiments of the present application, the pneumatic ejection device further includes an air pump, an air chamber, and a first air supply pipeline, wherein the air chamber is connected to the air pump, one end of the first air supply pipeline is connected to the air outlet of the air chamber, and the other end is connected to the pneumatic ejector rod; a first solenoid valve is provided on the first air supply pipeline;

[0010] The air chamber is provided with a first sensor for detecting the air pressure within the air chamber.

[0011] Further, in some embodiments of the present application, the cleaning device includes a second air supply pipe and an air outlet, one end of the second air supply pipe is connected to the air chamber, and the other end is connected to the air outlet; the air outlet is arranged on the ejection channel, and is used to blow gas into the ejection channel;

[0012] The second air supply pipeline is provided with a second solenoid valve.

[0013] Further, in some embodiments of the present application, after the pneumatic ejector ejects the grain and before the cleaning device blows and cleans the ejection channel of the grain, the air pressure in the air chamber is higher than the atmospheric pressure;

[0014] The cleaning device uses the remaining gas in the air chamber after the pneumatic ejector ejects the grain to blow and clean the ejection channel of the grain;

[0015] The second solenoid valve opens the second air supply pipeline after the first solenoid valve controls the first air supply pipeline to open, and the time difference between the second solenoid valve opening the second air supply pipeline and the first solenoid valve opening the first air supply pipeline is no more than 1s and no less than 0.2s.

[0016] Furthermore, in some embodiments of the present application, the air outlet is inclined toward the first end surface of the ejection channel close to the pneumatic ejection device, and the axis of the air outlet forms an acute angle with the side wall of the ejection channel or a section of the side wall.

[0017] Further, in some embodiments of the present application, the pneumatic ejector includes a cylinder, a compression spring installed in the cylinder, and an ejector; the compression spring is sleeved on the ejector; the ejector includes a rod body and an ejector plate, one end of the rod body is provided with a limiting structure for limiting the compression spring, and the other end extends out of the cylinder and is fixedly connected to the ejector plate;

[0018] The push rod and one end of the cylinder away from the top plate are provided with a gas containing cavity; the push rod is slidably connected with the inner side wall of the cylinder;

[0019] The top plate is located at the first end surface of the ejection channel, and the shape and area of ​​the top plate are the same as those of the first end surface.

[0020] Furthermore, in some embodiments of the present application, a venting port connected to the gas containing chamber is provided on the cylinder.

[0021] Further, in some embodiments of the present application, the vent is located on the first end surface.

[0022] Further, in some embodiments of the present application, the top plate is magnetically connected to the first end surface.

[0023] Further, in some embodiments of the present application, a launch port is provided on the housing;

[0024] The ejection channel is arranged obliquely, and the pneumatic ejector rod is located at the lower end of the ejection channel, and the higher end of the ejection channel is communicated with the launching port.

[0025] Further, in some embodiments of the present application, a feeding port and a launching port are provided on the housing;

[0026] The feeding device comprises a feeding hopper, a feeding channel and a feeding driver for driving the feeding channel to move up and down along the inner side wall of the shell; the feeding hopper is connected with the feeding port, and the feeding channel is located on one side of the feeding hopper; the feeding hopper and the feeding channel are separated by the side wall of the feeding channel close to the feeding hopper, and the feeding hopper is connected with the upper end of the feeding channel;

[0027] The material unloading driver is connected with the controller.

[0028] Further, in some embodiments of the present application, the output shaft of the material discharge driver is connected to a rotating wheel, an eccentric shaft is provided on the rotating wheel, and the eccentric shaft is connected to the material discharge channel through a connecting rod;

[0029] The connecting rod is provided with a waist-shaped hole and a connecting hole; the eccentric shaft is movably connected to the connecting rod through the waist-shaped hole; the unloading channel is provided with a connecting pin shaft, and the connecting pin shaft is rotatably connected to the connecting rod through the connecting hole.

[0030] Further, in some embodiments of the present application, the output shaft of the material discharge driver is connected to a rotating wheel, an eccentric shaft is provided on the rotating wheel, and the eccentric shaft is connected to the material discharge channel through a connecting rod;

[0031] The connecting rod is provided with an R-shaped hole and a triangular hole; the eccentric shaft is movably connected to the connecting rod through the R-shaped hole; the unloading channel is provided with a connecting pin, and the connecting pin is rotatably connected to the connecting rod through the triangular hole.

[0032] Furthermore, in some embodiments of the present application, a movable baffle and a first driver for driving the movable baffle to rotate are provided on the upper portion of the material discharge channel, and the movable baffle is positioned lower than the upper end surface of the material discharge channel.

[0033] Further, in some embodiments of the present application, a stirring member is provided at the lower portion of the lower hopper, and the stirring member includes a second driver and stirring blades connected to an output shaft of the second driver; the stirring member is connected to the controller.

[0034] Furthermore, in some embodiments of the present application, a base and a driving device arranged on the base are also included, and the driving device drives the shell and the feeding device, pneumatic ejection device, cleaning device, and ejection channel in the shell to rotate along the axis of the shell perpendicular to the ground.

[0035] Further, in some embodiments of the present application, the driving device includes a third driver, a rotating shaft, a first gear and a second gear; the output shaft of the third driver is connected to the first gear, and the first gear and the second gear are meshed; the second gear is sleeved on the rotating shaft and fixedly connected to the rotary bearing of the rotating shaft;

[0036] The axis of the rotating shaft is in a straight line with the axis of the shell perpendicular to the ground.

[0037] Further, in some embodiments of the present application, the base includes a fixed seat and a rotating seat, the rotating seat is located above the fixed seat and connected via a rotating shaft; the axis of the rotating shaft is in a straight line with the axis of the fixed seat;

[0038] The driving device comprises a third driver, a rotating shaft, a first gear and a second gear; the output shaft of the third driver is connected to the first gear, and the first gear and the second gear are meshed; the second gear is sleeved on the rotating shaft and fixedly connected to the rotary bearing of the rotating shaft;

[0039] The third driver and the first gear are mounted on the rotating seat, the rotating shaft and the second gear are mounted on the fixed seat, and the third driver and the first gear rotate along the axis of the rotating shaft;

[0040] The shell and the feeding device, the pneumatic ejection device and the cleaning device arranged in the shell are installed on the rotating seat.

[0041] Furthermore, in some embodiments of the present application, an ejection information collection device is also provided on the shell, and the ejection information collection device is connected to the controller.

[0042] Further, in some embodiments of the present application, the ejection information collection device includes one or more of a camera for capturing pet images and a voice device for collecting audio;

[0043] The camera and / or the voice device are connected to the controller.

[0044] Furthermore, in some embodiments of the present application, a distance measuring device is also provided on the shell; and the distance measuring device is connected to the controller.

[0045] Furthermore, in some embodiments of the present application, a terminal is also included, and the terminal is wirelessly connected to the controller.

[0046] The present application provides a pneumatic grain ejector, which uses a pneumatic ejection device to provide power for grain ejection, wherein the pneumatic ejection device is driven by air pressure, and does not use the potential energy of the elastic member to provide power for grain ejection. It is not necessary to set gears in the pneumatic ejection device, thereby avoiding the situation of grain fines contamination and gear jamming, and avoiding the service life of the grain ejector affected by gear jamming; at the same time, it uses high-pressure gas as a power source, and the noise of grain ejection is small. In addition, the pneumatic grain ejector provided by the present application is also provided with a cleaning device for cleaning the ejection channel, which reduces the impact of grain fines, impurities, etc. in the ejection channel on the pneumatic ejection device, and improves the service life and user experience of the pneumatic grain ejector. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 to Figure 3 A schematic diagram of the structure inside the shell of a pneumatic food ejector provided in some embodiments of the present application;

[0049] Figure 4 A cross-sectional view of a pneumatic food ejector provided for some embodiments of the present application;

[0050] Figure 5 for Figure 4 A magnified view of the local area A;

[0051] Figure 6 A schematic diagram of the overall structure of a pneumatic grain ejector provided in some embodiments of the present application.

[0052] Description of main component symbols:

[0053] 10-housing, 11-camera, 12-launch port, 13-speaker, 20-base, 21-fixed seat, 22-rotating seat, 23-driving device, 231-third driver, 232-rotating shaft, 233-first gear, 234-second gear, 30-feeding device, 31-discharging hopper, 32-discharging channel, 321-movable baffle, 322-first driver, 323-stirring member, 331-rotating wheel, 332-eccentric shaft, 333-connecting rod, 3331-R-type hole, 3332-triangular hole Hole, 334-rotating pin, 34-sliding through hole, 40-pneumatic ejection device, 41-air pump, 42-air chamber, 43-first air supply pipeline, 44-pneumatic ejector, 441-cylinder, 442-limiting structure, 443-compression spring, 444-elevator, 445-top plate, 446-gas containing chamber, 45-first solenoid valve, 50-cleaning device, 51-second air supply pipeline, 52-air outlet, 53-second solenoid valve, 60-ejection channel, 61-first end face, 70-controller, 80-food. DETAILED DESCRIPTION

[0054] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0055] In the description of the present application, it should be understood that the terms "upper", "lower", "rear", "left", "right", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0056] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0057] The present application provides a pneumatic food ejector, see Figure 1 to Figure 6 , comprising a housing 10 and a feeding device 30, a pneumatic ejection device 40, a cleaning device 50, an ejection channel 60 and a controller 70 installed in the housing 10;

[0058] The housing 10 is provided with a feeding port for feeding food 80 and a launching port 12 for ejecting food 80;

[0059] The feeding device 30 includes a lower hopper 31, and the lower hopper 31 includes an inlet and a lower outlet, and the inlet is connected to the feeding port; the food 80 put into the shell 10 directly enters the inlet through the feeding port, and then enters the ejection channel 60 through the lower outlet.

[0060] In some embodiments, the lower hopper 31 can be connected to the housing 10 as a whole or integrally formed, in which case the feeding port and the feeding port are the same structure. Preferably, the lower hopper 31 is connected to the housing 10 as a whole or integrally formed, reducing the pores on the housing 10, and reducing the impurities in the air or the fines of the grain 80 from entering the space between the housing 10 and the lower hopper 31 and the ejection channel 60.

[0061] In some embodiments, the feeding device further includes a feeding channel 32, and the grain 80 enters the feeding channel 32 through the feeding port of the feeding hopper 31, and then enters the ejection channel 60 through the feeding channel 32. The connection relationship between the feeding channel 32 and the feeding hopper 31 can be flexibly changed to control the grain 80 in the feeding hopper 31 to enter the feeding channel 32.

[0062] In the present application, the lower hopper 31 is not only a feeding device, but also can play a certain function of storing grain 80. By controlling the change in the connection relationship between the lower hopper 31 and the lower feeding channel 32, it can control whether the grain 80 enters the lower feeding channel 32 or not, and control the amount of grain 80 entering the lower feeding channel 32.

[0063] In some embodiments, the feeding device also includes a feeding driver for driving the feeding channel 32 to move up and down along the inner wall of the shell 10; the feeding hopper 31 is connected to the feeding port, and the feeding channel 32 is located on one side of the feeding hopper 31; the feeding hopper 31 and the feeding channel 32 are separated by the side wall of the feeding channel 32 close to the feeding hopper 31, and the feeding hopper 31 is connected to the upper end of the feeding channel 32; the feeding driver is connected to the controller 70.

[0064] In some embodiments, the lower hopper 31 is a bucket-shaped structure with a large upper end and a small lower end, and the lower hopper 31 is surrounded by at least one inclined side wall and the side wall of the lower material channel 32, so when the lower material channel 32 moves downward, the grain 80 in the lower hopper 31 can enter the lower material channel 32, and enter the ejection channel 60 through the lower material channel 32. By controlling the downward movement height of the lower material channel 32, the amount of grain 80 in the lower hopper 31 that enters the lower material channel 32 can be controlled, so as to control the amount of grain 80 in the ejection channel 60.

[0065] The material discharge driver may be any one of a pneumatic rod, a hydraulic rod or an electric rod for driving the material discharge channel 32 to move up and down.

[0066] In some embodiments, the output shaft of the unloading drive is connected to a rotating wheel 331, an eccentric shaft 332 is arranged on the rotating wheel 331, and the eccentric shaft 332 is connected to the unloading channel 32 through a connecting rod 333; the connecting rod 333 is provided with a waist-shaped hole and a connecting hole; the eccentric shaft 332 is movably connected to the connecting rod 333 through the waist-shaped hole; the unloading channel 32 is provided with a connecting pin 334, and the connecting pin 334 is rotatably connected to the connecting rod 333 through the connecting hole.

[0067] In other embodiments, the output shaft of the unloading drive is connected to a rotating wheel 331, an eccentric shaft 332 is arranged on the rotating wheel 331, and the eccentric shaft 332 is connected to the unloading channel 32 through a connecting rod 333; the connecting rod 333 is provided with an R-shaped hole 3331 and a triangular hole 3332; the eccentric shaft 332 is movably connected to the connecting rod 333 through the R-shaped hole 3331; the unloading channel 32 is provided with a connecting pin 334, and the connecting pin 334 is rotatably connected to the connecting rod 333 through the triangular hole 3332.

[0068] The connecting pin 334 is arranged on the side wall of the feeding channel 32, and a shell for limiting the up and down movement of the feeding channel 32 is also arranged outside the feeding channel 32, and a sliding through hole 34 arranged along the moving direction of the feeding channel 32 is arranged on the shell, and the connecting pin 334 extends out of the sliding through hole 34 and is connected with the connecting rod 333. When the feeding driver drives the feeding channel 32 to move up and down, the feeding driver drives the output shaft to rotate, drives the rotating wheel 331 to rotate, and the eccentric shaft 332 on the rotating wheel 331 drives the connecting rod 333 to move, thereby driving the connecting pin 334 to move along the sliding through hole 34, so as to realize the up and down movement of the feeding channel 32. Preferably, a movable baffle 321 and a first driver 322 for driving the movable baffle 321 to rotate are arranged on the upper part of the feeding channel 32, and the position of the movable baffle 321 is lower than the upper end surface of the feeding channel 32, and the movable baffle 321 is used to control the amount of grain 80 entering the feeding channel 32. The movable baffle 321 is located at the upper part of the feeding channel 32 and is lower than the upper end of the feeding channel 32. Therefore, the movable baffle 321 and the side wall of the feeding channel 32 form a space that can accommodate a small amount of grain 80. When the feeding channel 32 moves down to the lowest point, the grain 80 in the feeding hopper 31 enters the feeding channel 32; then the feeding channel 32 moves up, and the excess grain 80 in the feeding channel 32 will return to the feeding hopper 31. Then the first driver 322 is started to rotate the movable baffle 321, and the grain 80 left on the movable baffle 321 falls into the ejection channel 60 to prepare for ejection. This structure can more accurately control the amount of grain 80 discharged from the feeding channel 32 each time, and the filling degree of the grain 80 in the feeding hopper 31 has little effect on the amount of grain 80 discharged from the feeding channel 32 (unless the amount of grain 80 in the feeding hopper 31 is already lower than the amount of grain 80 discharged from the feeding channel 32 each time), and it is easy to control automatically. At the same time, there is no need to set a sensor on the movable baffle 321 to sense whether the grain 80 has entered the feeding channel 32, and its structure is simpler, which is conducive to improving the service life.

[0069] The movable baffle 321 can be turned over with the rotation axis on the central axis of the movable baffle 321 as the rotation axis under the drive of the first driver 322, or can be deflected and reset with the rotation axis on the side as the rotation axis under the drive of the first driver 322. Before or during the downward movement of the feeding channel 32 and before it moves up to the highest point, the movable baffle 321 remains horizontal or infinitely close to a parallel horizontal plane, so that the food 80 can enter the feeding channel 32 and remain on the movable baffle 321, so as to achieve quantitative feeding each time.

[0070] In other embodiments, the connection between the lower hopper 31 and the lower material channel 32 can also be controlled by providing a movable plate that automatically controls its rotation. In this embodiment, the movable plate is connected to a driving member that drives the movable plate to rotate, and the driving member is connected to the controller 70, so that the controller 70 controls the opening and closing of the driving member and the working time, and controls the amount of grain 80 in the lower hopper 31 entering the lower material channel 32. In this embodiment, the movable plate is directly located at the lower end of the lower hopper 31 and at the upper end of the lower material channel 32; when the driving member drives the movable plate to rotate, the movable plate rotates, the lower end of the lower hopper 31 is connected to the lower material channel 32, and the grain 80 enters the lower material channel 32; when the driving member drives the movable plate to continue to rotate or rotate in the opposite direction, the lower end of the lower hopper 31 is not connected to the lower material channel 32, and the grain 80 cannot enter the lower material channel 32, and the feeding of the lower material channel 32 is interrupted. By controlling the rotation frequency and rotation time of the driving member, the amount and frequency of the grain 80 entering the feeding channel 32 can be controlled.

[0071] The movable plate may also be located between the lower hopper 31 and the lower material channel 32, and the lower end of the movable plate may contact or not contact the lower end of the lower hopper 31 under the driving of the driving member. When the driving member drives the movable plate to rotate, the lower end of the movable plate does not contact the lower end of the lower hopper 31, forming a gap that allows the grain 80 to pass through, and the grain 80 enters the lower material channel 32; when the driving member drives the movable plate to reset, the lower end of the movable plate contacts the lower end of the lower hopper 31, and the grain 80 cannot enter the lower material channel 32, and the feeding of the lower material channel 32 is interrupted. By controlling the rotation frequency and rotation time of the driving member, the amount and frequency of the grain 80 entering the lower material channel 32 can be controlled.

[0072] In some embodiments, a stirring member 323 is disposed at the lower portion of the lower hopper 31, and the stirring member includes a second driver and a stirring blade connected to the output shaft of the second driver; the stirring member 323 is connected to the controller 70. When the amount of grain 80 in the lower hopper 31 is small, it can be avoided that the grain 80 in the lower hopper 31 is not easy to enter the lower material channel 32, thereby reducing blockage.

[0073] The first driver 322, the driving member, and the second driver can all be any one of a pneumatic rod, a hydraulic rod, or an electric rod.

[0074] In some embodiments, the pneumatic ejection device 40 ejects the food 80 using a pneumatic ejector rod 44. The pneumatic ejection device 40 further includes an air pump 41, an air chamber 42, and a first air supply pipe 43. The air chamber 42 is connected to the air pump 41. One end of the first air supply pipe 43 is connected to the air outlet of the air chamber 42, and the other end is connected to the pneumatic ejector rod 44. A first solenoid valve 45 is provided on the first air supply pipe 43. A first sensor for detecting the air pressure in the air chamber 42 is provided in the air chamber 42. The first sensor, the first solenoid valve 45, and the air pump 41 are respectively connected to the controller 70.

[0075] The air pump 41 is used to pump air into the air chamber 42 to increase the air pressure in the air chamber 42; the first sensor is used to collect the air pressure in the air chamber 42 and send it to the controller 70. The controller 70 determines whether to open the first electromagnetic valve 45 according to the air pressure in the air chamber 42 and whether the command to eject the grain 80 is received. The first electromagnetic valve 45 is used to control the on-off of the first air supply pipeline 43. When the first air supply pipeline 43 is disconnected, the gas in the air chamber 42 cannot enter the pneumatic ejector 44, and the grain 80 is not ejected; when the first air supply pipeline 43 is connected, the gas in the air chamber 42 enters the pneumatic ejector 44, and the grain 80 is ejected out of the shell 10.

[0076] The controller 70 can determine whether to open the first electromagnetic valve 45 according to whether the air pressure in the air chamber 42 reaches at least 100 kPa, based on whether the command to eject the food 80 is received. When the air pressure in the air chamber 42 does not reach 100 kPa, the controller 70 does not open the first electromagnetic valve 45.

[0077] When the air pressure in the air chamber 42 is too high, such as exceeding 200 kPa, the controller 70 shuts down the air pump 41 according to the air pressure data collected by the first sensor to avoid excessive air pressure in the air chamber 42 and thus causing safety hazards.

[0078] The pneumatic ejector 44 comprises a cylinder 441, a compression spring 443 installed in the cylinder 441, and an ejector 444; the compression spring 443 is sleeved on the ejector 444; the ejector 444 comprises a rod body and a top plate 445 located at one end of the rod body, and a limiting structure 442 for limiting the position of the compression spring 443 in the cylinder 441 is provided at one end of the rod body away from the top plate; the limiting structure 442 can be an annular limiting structure, or a C-shaped limiting structure or a plurality of limiting protrusions in an annular array, and the compression spring 443 can be fixedly connected to the limiting structure 442, or can be non-fixedly connected; one end of the ejector 444 away from the limiting structure 442 extends out of the cylinder 441 and is fixedly connected to the top plate 445;

[0079] One end of the push rod 444 provided with the limiting structure 442 and the end of the cylinder 441 away from the top plate 445 and the side wall of the cylinder 441 form a gas containing chamber 446; the push rod 444 is slidably connected to the inner side wall of the cylinder 441;

[0080] The top plate 445 is located at the first end surface 61 of the ejection channel 60, and the shape and area of ​​the top plate 445 are the same as the shape and area of ​​the first end surface 61, so as to prevent the grain 80 from falling into the gap between the top plate 445 and the side wall of the ejection channel 60, affecting the return of the top plate 445 and increasing the grain 80 debris in the ejection channel 60.

[0081] It should be noted that the push rod 444 is slidably connected to the inner wall of the cylinder 441. It should be understood that the inner wall of the cylinder 441 is smooth and the outer wall of the limiting structure 442 is also smooth. The limiting structure 442 and the inner wall of the cylinder 441 are infinitely close to close contact, which prevents the high-pressure gas from entering the gas containing chamber 446 and then quickly entering the space enclosed by the cylinder 441 and the rod body, causing the pressure difference on both sides of the limiting structure to quickly decrease, affecting the impact force of the pneumatic push rod 44.

[0082] One end of the compression spring 443 is connected to one end of the cylinder 441 away from the gas containing chamber 446, and the other end is connected to the limiting structure 442. At the same time, in the natural state, the compression spring 443 is not compressed; when the high-pressure gas enters the gas containing chamber 446, the air pressure in the gas containing chamber 446 increases rapidly, the compression spring 443 is compressed rapidly, and the push rod 444 is pushed out of the cylinder 441 rapidly, driving the top plate 445 to push the grain 80 on the top plate 445 to move rapidly, and then be ejected. After the ejection is completed, due to the incomplete sealing of the cylinder 441 and the gas containing chamber 446, the air pressure in the gas containing chamber 446 gradually tends to be consistent with the external air pressure, and the compression spring 443 is reset, driving the push rod 444 and the top plate 445 to reset, preparing for the next ejection of the grain 80.

[0083] In some embodiments, after the pneumatic ejector ejects the grain and before the cleaning device blows and cleans the grain ejection channel, the air pressure in the air chamber is higher than the atmospheric pressure; the cleaning device blows and cleans the grain ejection channel by using the remaining gas in the air chamber after the pneumatic ejector ejects the grain;

[0084] The second solenoid valve opens the second air supply pipeline after the first solenoid valve controls the first air supply pipeline to open, and the time difference between the second solenoid valve opening the second air supply pipeline and the first solenoid valve opening the first air supply pipeline is no more than 1s and no less than 0.2s.

[0085] When the second solenoid valve opens the second air supply pipeline, the first solenoid valve does not close the first air supply pipeline, and the air pressure in the air chamber, the pneumatic push rod and the first air supply pipeline are all higher than the atmospheric pressure. Therefore, the air chamber, the pneumatic push rod and the first air supply pipeline all quickly enter the second air supply pipeline to blow and clean the ejection channel of the grain, and at the same time, the push rod is quickly reset under the reset force of the compression spring.

[0086] In some embodiments, the cylinder 441 is provided with a vent connected to the gas containing chamber 446. After the ejection is completed, due to the existence of the vent in the gas containing chamber 446, the air pressure in the gas containing chamber 446 gradually approaches the same as the external air pressure, and the compression spring 443 is reset, driving the top rod 444 and the top plate 445 to reset, preparing for the next ejection of the grain 80.

[0087] The aperture of the vent should not be too large or too small. A vent that is too large will cause the air pressure in the gas containing chamber 446 to drop too much instantly, resulting in insufficient impact force on the ejector pin 444, affecting the ejection capability of the ejector pin 444; while a vent that is too small will cause the venting speed to be too slow, which is not conducive to the gas in the gas containing chamber 446 escaping in a short time, affecting the reset speed of the ejector pin 444. Its size can be adjusted according to the size of the gas containing chamber 446, such as the cross-sectional area of ​​the vent is not greater than 1 / 100 of the side wall of the gas containing chamber 446 where the vent is located.

[0088] Furthermore, the vent is located on the first end surface 61, and the vent is arranged on the first end surface 61 covered by the top plate 445, so that the gas entering the gas containing chamber 446 is not easily leaked when the top plate 445 is not pushed; when the top plate 445 is pushed open, the vent can release the gas to achieve a rapid balance between the air pressure in the gas containing chamber 446 and the external air pressure, and the top plate 445 is quickly reset under the action of the deformation force of the compression spring 443; and when the top plate 445 is reset, its vent is covered again to prevent fine grains 80 from entering; the vent is located on the first end surface 61 to increase the impact force of its pneumatic push rod 44. At the same time, its air vent is located on the first end face 61. When the grain 80 is ejected, the gas in the gas containing chamber 446 can also enter the ejection channel 60 to form an airflow to blow the ejection channel 60, thereby preventing the grain 80 fine particles from falling between the top plate 445 and the first end face 61, or even entering the cylinder 441, which will affect the service life of the gas grain 80 ejector.

[0089] Furthermore, the top plate 445 is magnetically connected to the first end face 61, so that there is a certain disconnectable adsorption force between the top plate 445 and the first end face 61, so that the gas containing chamber 446 can store energy during rapid inflation, and when the impact force of its high air pressure is greater than the adsorption force of the magnetic member, such as the magnetic strip, the top plate 445 is separated from the first end face 61; and because the adsorption force between the top plate 445 and the first end face 61 is cut off, the impact force of the top plate 445 is higher, which can further increase the ejection distance of the grain 80; in addition, after the ejection is completed, the top plate 445 gradually returns to its original position, and when the top plate 445 is close to the first end face 61, due to its magnetic adsorption, the top plate 445 is tightly fitted with the first end face 61, so that the reset effect is good, and the top plate 445 can also be prevented from shaking during the movement of the pneumatic grain ejector.

[0090] Especially when the air vent is located on the first end surface 61, it is also possible to better prevent fine particles of the grain 80 from entering the top plate 445 and the first end surface 61 or even the air vent.

[0091] The ejection channel 60 is tilted, and the pneumatic ejector 44 is located at the lower end of the ejection channel 60, and the higher end of the ejection channel 60 is connected to the launch port 12. The lower end refers to the end relatively closer to the ground, and the higher end refers to the end relatively farther from the ground.

[0092] The ejection channel 60 is tilted so that the ejected food 80 forms a parabola and its motion trajectory is more obvious. Preferably, the angle between the axis of the ejection channel 60 and the ground plane is 45-60 degrees.

[0093] In some instances, the cleaning device includes a second air supply pipe 51 and an air outlet 52, wherein one end of the second air supply pipe 51 is connected to the air chamber 42 and the other end is connected to the air outlet 52; the air outlet 52 is arranged on the ejection channel 60 for blowing gas into the ejection channel 60; a second solenoid valve 53 is arranged on the second air supply pipe 51.

[0094] The cleaning device 50 and the pneumatic ejection device 40 share an air pump 41 and an air chamber 42. The use of the same air pump 41 and air chamber 42 to provide air pressure can not only save the required space and equipment, making the pneumatic grain ejection device more compact and lightweight, but also reduce costs. At the same time, the air provided by the air pump 41 and the air chamber 42 can also provide the pressure of the gas ejected from the air outlet 52, so that the cleaning effect is better.

[0095] Of course, if miniaturization, lightness and cost are not taken into consideration, the cleaning device 50 may also be provided with an air pump 41 and an air chamber 42 to provide the second air supply pipe 51 with gas for cleaning the ejection channel 60 .

[0096] In some embodiments, the air outlet 52 is inclined toward the first end face 61 of the ejection channel 60 close to the pneumatic ejection device 40, and the axis of the air outlet 52 forms an acute angle with the side wall of the ejection channel 60 or the tangent of the side wall. That is, the direction of the gas ejected from the air outlet 52 not only forms an acute angle with the first end face 61, but also forms an acute angle with the side wall of the ejection channel 60 (when the side wall is a plane side wall) or the tangent of the side wall (when the side wall is an arc side wall), so that it can form a rotating vortex in the ejection channel 60, thereby improving the airflow blowing and cleaning effect. The angle is preferably 30 to 65°.

[0097] In other embodiments, the cleaning device 50 may also be replaced by an air blowing port provided on the first end surface 61 of the pneumatic ejector 44, and the airflow blown out of the air blowing port is used as the airflow for cleaning the ejection channel 60, and the structure is simpler.

[0098] In some embodiments, the first air supply pipeline 43 and the second air supply pipeline 51 are connected to the air chamber 42 through a main pipeline.

[0099] In some embodiments, the pneumatic grain ejector also includes a base 20 and a driving device 23 arranged on the base 20, and the driving device 23 drives the shell 10 and the feeding device 30, the pneumatic ejection device 40, the cleaning device 50, and the ejection channel 60 in the shell 10 to rotate along the axis of the shell 10 perpendicular to the ground.

[0100] The base 20 and the shell 10 can be detachably connected to facilitate the disassembly and assembly of the pneumatic food ejector; the detachable connection between the two can be connected by fasteners such as bolts, or by a snap connection, or by other connection methods.

[0101] The housing 10 is provided with a bottom plate, and the above-mentioned feeding device 30, pneumatic ejection device 40 and cleaning device 50 are all arranged in the inner space of the housing 10 with the bottom plate. A rotating shaft is arranged on the bottom plate of the housing 10, and the rotating shaft is in the same straight line with the axis of the bottom plate of the housing 10. The driving device 23 drives the rotating shaft to rotate, thereby realizing the synchronous rotation of the housing 10 and the feeding device 30, the pneumatic ejection device 40 and the cleaning device 50 in the housing 10, and realizing the change of the ejection direction.

[0102] Among them, the driving device 23 includes a driver, a rotating shaft, a first gear 233 and a second gear 234; the output shaft of the driver is connected to the first gear 233, and the first gear 233 and the second gear 234 are meshed; the second gear 234 is sleeved on the rotating shaft and fixedly connected to the rotating shaft 232 of the rotating shaft.

[0103] In some other embodiments, the base 20 includes a fixed seat 21 and a rotating seat 22, wherein the rotating seat 22 is located above the fixed seat 21 and connected via a rotating shaft 232; the axis of the rotating shaft 232 is in a straight line with the axis of the fixed seat 21;

[0104] The driving device 23 includes a third driver 231, a rotating shaft 232, a first gear 233 and a second gear 234; the output shaft of the third driver 231 is connected to the first gear 233, and the first gear 233 and the second gear 234 are meshed; the second gear 234 is sleeved on the rotating shaft 232 and fixedly connected to the rotating shaft 232 of the rotating shaft 232; the third driver 231 and the first gear 233 are installed on the rotating seat 22, the rotating shaft 232 is provided and the second gear 234 is installed on the fixed seat 21, and the third driver 231 and the first gear 233 rotate along the axis of the rotating shaft 232;

[0105] The housing 10 and the feeding device, the pneumatic ejection device 40 , and the cleaning device 50 disposed in the housing 10 are installed on the rotating seat 22 .

[0106] In some embodiments, in order to further improve the interaction between the pet and the owner, and to realize the remote control of the opening and closing of the pneumatic food ejector, an ejection information collection device is further provided on the housing 10, and the ejection information collection device is connected to the controller 70. The ejection information collection device includes one or more of a camera 11 for capturing pet images and a voice device for collecting audio;

[0107] The camera 11 and / or the voice device are connected to the controller 70 .

[0108] The camera 11 can be used to collect images of the pet and send them to the controller 70, and the controller 70 determines whether to automatically eject the food 80 based on the collected images. The voice device can collect the owner's voice instructions and / or play the owner's / animal's voice and send them to the controller 70, and determine whether to automatically eject the food 80 based on the owner's voice instructions. The voice device includes not only a receiver for receiving voice, but also a speaker 13 for playing the owner's or animal's voice.

[0109] The controller 70 is also provided with a wireless communication module, which can transmit interactive signals with a remote terminal using a radio signal of the wireless communication module. The remote terminal can be a mobile phone, a tablet, a laptop computer, a desktop computer, etc.

[0110] In some embodiments, a distance measuring device is further provided on the housing 10; the distance measuring device is connected to the controller 70, and determines whether to eject the food 80 by measuring the distance between the pet and the pneumatic food ejector.

[0111] Furthermore, a switch button or switch key connected to the controller 70 can be provided on the surface of the shell 10 to control the controller 70 to send instructions to the feeding device, the pneumatic ejection device 40 and / or the cleaning device 50 to realize manual control of the ejection of grain 80 and / or the cleaning of the ejection channel 60 of the pneumatic grain ejector.

[0112] In other embodiments, a display screen connected to the controller 70 may also be provided on the shell 10, which can display the amount of grain 80 in the lower hopper 31 (in this case, a weighing device such as a pressure sensor may be provided in the lower hopper 31), as well as the status of the pneumatic grain ejector, etc.; it can also be used to display the image of the pet owner when the pet owner remotely controls the pneumatic grain ejector.

[0113] It should be noted that the pneumatic grain ejector is provided with a battery and a corresponding charging interface, which is electrically connected to the battery and is used to charge the battery with an external power supply; the battery is electrically connected to the feeding device 30, the pneumatic ejection device 40, the cleaning device 50, the controller 70, the ejection information collection device, the ranging device, the switch button and / or the switch button, the display screen and the driving device 23 on the base 20 for providing power.

[0114] The driver, driving member, ejection information collection device, ranging device, display screen, etc. used in this application are all existing equipment that can realize the above functions. Therefore, their structure and model are not limited in this application and do not affect the implementation of this application.

[0115] Taking some embodiments as an example, the working principle of the pneumatic food ejector provided by this application is as follows:

[0116] (1) Control the pneumatic grain ejector to eject grain 80

[0117] The pet owner presses the switch button or switch button on the housing 10 or sends an ejection command through a remote terminal or by voice. After receiving the ejection command, the controller 70 controls the feeding channel 32 to move down to the lowest position, and the grain 80 enters the movable baffle 321 of the feeding channel 32. Then, the feeding channel 32 is controlled to move up to the highest position, and the grain 80 on the movable baffle 321 returns to the upper hopper. Then, the first driver 322 drives the movable baffle 321 to rotate, and the grain 80 on the movable baffle 321 falls from the feeding channel 32 into the ejection channel 60.

[0118] The controller 70 controls the air pump 41 to start and inflate the air chamber 42. The first sensor detects the air pressure in the air chamber 42 and sends it to the controller 70. When the first sensor detects that the air pressure in the air chamber 42 reaches the preset air pressure required for ejecting the food 80, the controller 70 controls the first solenoid valve 45 to open, and the high-pressure gas enters the gas containing chamber 446 of the pneumatic ejector rod 44 from the first air supply pipe 43, and pushes the ejector rod 444 and the top plate 445 to move upward at a high speed, ejecting the food 80 in the ejection channel 60. The gas in the gas containing chamber 446 escapes, and the top plate 445 and the top plate 445 are reset to prepare for the next ejection.

[0119] (2) Control the pneumatic grain ejector to clean the ejection channel 60

[0120] The pet owner presses the switch button or switch button on the shell 10 or sends a cleaning instruction through a remote terminal or sends a cleaning instruction by voice. After receiving the cleaning instruction, the controller 70 controls the air pump 41 to start and inflate the air chamber 42. The first sensor detects the air pressure in the air chamber 42 and sends it to the controller 70; when the first sensor detects that the air pressure in the air chamber 42 reaches the preset air pressure required for cleaning, the controller 70 controls the second solenoid valve 53 to open, and the high-pressure gas enters the air outlet 52 from the second air supply pipe 51, and quickly blows the inner wall of the ejection channel 60 and the first end face 61.

[0121] In some other embodiments, the controller 70 is further provided with a timing module, which can realize the periodic automatic opening of the grain 80 ejection and the cleaning ejection channel 60.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pneumatic food ejector, characterized in that: It comprises a housing and a feeding device, a pneumatic ejection device, a cleaning device, an ejection channel and a controller installed in the housing; Wherein, the shell is provided with a feeding port, one end of the feeding device is connected with the feeding port, and the other end is connected with the ejection channel; The pneumatic ejection device is located at one end of the ejection channel and is used to eject the food in the ejection channel out of the housing; The air outlet of the cleaning device is in communication with the ejection channel; The controller is connected with the feeding device, the pneumatic ejection device and the cleaning device.

2. The pneumatic food ejector according to claim 1, characterized in that: The pneumatic ejection device utilizes a pneumatic ejector rod to eject the grain; and the cleaning device utilizes gas to blow and clean the ejection channel of the grain.

3. The pneumatic food ejector according to claim 2, characterized in that: The pneumatic ejection device further includes an air pump, an air chamber, and a first air supply pipeline, wherein the air chamber is connected to the air pump, one end of the first air supply pipeline is connected to the air outlet of the air chamber, and the other end is connected to the pneumatic ejector rod; a first solenoid valve is provided on the first air supply pipeline; A first sensor for detecting air pressure within the air chamber is disposed within the air chamber; The cleaning device comprises a second air supply pipe and an air outlet, wherein one end of the second air supply pipe is connected to the air chamber and the other end is connected to the air outlet; the air outlet is arranged on the ejection channel and is used to blow gas into the ejection channel; The second air supply pipeline is provided with a second solenoid valve.

4. The pneumatic food ejector according to claim 3, characterized in that: After the pneumatic ejector ejects the grain and before the cleaning device blows and cleans the ejection passage of the grain, the air pressure in the air chamber is higher than the atmospheric pressure; The cleaning device uses the remaining gas in the air chamber after the pneumatic ejector ejects the grain to blow and clean the ejection channel of the grain; The second solenoid valve opens the second air supply pipeline after the first solenoid valve controls the first air supply pipeline to open, and the time difference between the second solenoid valve opening the second air supply pipeline and the first solenoid valve opening the first air supply pipeline is no more than 1s and no less than 0.2s.

5. The pneumatic food ejector according to claim 3, characterized in that: The air outlet is inclined toward the ejection channel and close to the first end surface of the pneumatic ejection device, and the axis of the air outlet forms an acute angle with the side wall of the ejection channel or a section of the side wall.

6. The pneumatic food ejector according to claim 2, characterized in that: The pneumatic ejector comprises a cylinder, a compression spring installed in the cylinder and an ejector; the compression spring is sleeved on the ejector; the ejector comprises a rod body and an ejector plate, one end of the rod body is provided with a limiting structure for limiting the compression spring, and the other end extends out of the cylinder and is fixedly connected to the ejector plate; The push rod and one end of the cylinder away from the top plate are provided with a gas containing cavity; the push rod is slidably connected with the inner side wall of the cylinder; The top plate is located at the first end surface of the ejection channel, and the shape and area of ​​the top plate are the same as those of the first end surface.

7. The pneumatic food ejector according to claim 6, characterized in that: The cylinder body is provided with a gas release port communicated with the gas containing cavity.

8. The pneumatic food ejector according to claim 7, characterized in that: The air vent is located on the first end surface.

9. The pneumatic food ejector according to any one of claims 6 to 8, characterized in that: The top plate is magnetically connected to the first end surface.

10. The pneumatic food ejector according to any one of claims 2 to 8, characterized in that: The shell is provided with a launching port; The ejection channel is arranged obliquely, and the pneumatic ejector rod is located at the lower end of the ejection channel, and the higher end of the ejection channel is communicated with the launching port.

11. The pneumatic food ejector according to claim 1, characterized in that: The shell is provided with a feeding port and a launching port; The feeding device comprises a feeding hopper, a feeding channel and a feeding driver for driving the feeding channel to move up and down along the inner side wall of the shell; the feeding hopper is connected with the feeding port, and the feeding channel is located on one side of the feeding hopper; the feeding hopper and the feeding channel are separated by the side wall of the feeding channel close to the feeding hopper, and the feeding hopper is connected with the upper end of the feeding channel; The material unloading driver is connected with the controller.

12. The pneumatic food ejector according to claim 11, characterized in that: The output shaft of the material discharge driver is connected to a rotating wheel, an eccentric shaft is arranged on the rotating wheel, and the eccentric shaft is connected to the material discharge channel through a connecting rod; The connecting rod is provided with a waist-shaped hole and a connecting hole; the eccentric shaft is movably connected to the connecting rod through the waist-shaped hole; the unloading channel is provided with a connecting pin shaft, and the connecting pin shaft is rotatably connected to the connecting rod through the connecting hole.

13. The pneumatic food ejector according to claim 11, characterized in that: The output shaft of the material discharge driver is connected to a rotating wheel, an eccentric shaft is arranged on the rotating wheel, and the eccentric shaft is connected to the material discharge channel through a connecting rod; The connecting rod is provided with an R-shaped hole and a triangular hole; the eccentric shaft is movably connected to the connecting rod through the R-shaped hole; the unloading channel is provided with a connecting pin, and the connecting pin is rotatably connected to the connecting rod through the triangular hole.

14. The pneumatic food ejector according to claim 11, characterized in that: A movable baffle and a first driver for driving the movable baffle to rotate are arranged on the upper part of the material discharge channel, and the position of the movable baffle is lower than the upper end surface of the material discharge channel.

15. The pneumatic food ejector according to claim 11, characterized in that: A stirring member is arranged at the lower part of the lower hopper, and the stirring member comprises a second driver and stirring blades connected to the output shaft of the second driver; the stirring member is connected to the controller.

16. The pneumatic food ejector according to claim 1, characterized in that: It also includes a base and a driving device arranged on the base, and the driving device drives the shell and the feeding device, the pneumatic ejection device, the cleaning device, and the ejection channel in the shell to rotate along the axis of the shell perpendicular to the ground.

17. The pneumatic food ejector according to claim 16, characterized in that: The driving device comprises a third driver, a rotating shaft, a first gear and a second gear; the output shaft of the third driver is connected to the first gear, and the first gear and the second gear are meshed; the second gear is sleeved on the rotating shaft and fixedly connected to the rotary bearing of the rotating shaft; The axis of the rotating shaft is in a straight line with the axis of the shell perpendicular to the ground.

18. The pneumatic food ejector according to claim 16, characterized in that: The base includes a fixed seat and a rotating seat, wherein the rotating seat is located above the fixed seat and connected via a rotating shaft; the axis of the rotating shaft is in a straight line with the axis of the fixed seat; The driving device comprises a third driver, a rotating shaft, a first gear and a second gear; the output shaft of the third driver is connected to the first gear, and the first gear and the second gear are meshed; The second gear is sleeved on the rotating shaft and fixedly connected to the rotating bearing of the rotating shaft; The third driver and the first gear are mounted on the rotating seat, the rotating shaft and the second gear are mounted on the fixed seat, and the third driver and the first gear rotate along the axis of the rotating shaft; The shell and the feeding device, the pneumatic ejection device and the cleaning device arranged in the shell are installed on the rotating seat.

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