Feeding mechanism and air feeding batch feeder

Abstract

The utility model provides a feeding mechanism and an air-conveying batch feeder. The feeding mechanism comprises a discharging pipe, a feeding pipe and an air inlet pipe, and one end of the discharging pipe is connected with a feeding pipe of the air-conveying batch feeder; one end of the feeding pipe is connected with the end, away from the feeding pipe, of the discharging pipe, and a feeding opening is formed in the feeding pipe. One end of the air inlet pipe is connected with the end, away from the feeding pipe, of the discharging pipe, the air inlet pipe is located on the lower side of the feeding pipe and communicated with the air feeder, and the radial size of the position, connected with the discharging pipe, of the air inlet pipe is smaller than that of the end, away from the feeding pipe, of the discharging pipe. The feeding mechanism is a positive and negative pressure feeding mechanism which is low in cost and high in efficiency, the feeding speed of the feeding mechanism can be increased through the air feeder relative to the negative pressure feeding mechanism, the feeding mechanism can enable an air feeding batch feeder not to use an air closing machine, abrasion of feed particles is reduced, and the total cost of equipment is reduced. The feeding mechanism is particularly suitable for scenes needing to avoid abrasion of feed particles, the cost can be remarkably reduced, and the feeding efficiency can be improved.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of aquaculture, and particularly to a feeding mechanism and a pneumatic feeding machine. Background Art

[0002] A feeding machine is a mechanical device commonly used in the aquaculture field for feeding the raised animals regularly and quantitatively. In the field of aquaculture, a pneumatic feeding machine that uses wind power to transport feed is a commonly used aquaculture machine. A typical pneumatic feeding machine consists of a main machine including a feed bin, a throwing mechanism, and a pipeline connecting the main machine and the throwing mechanism. The main machine is used to store feed pellets, and the throwing mechanism is used to generate negative pressure to extract feed pellets from the main machine bin through the pipeline and throw out the feed pellets through centrifugal blades.

[0003] As Figure 1 shown, the feed bin 1a is used to store feed pellets. There is an opening at the bottom of the feed bin 1a, and the feed pellets can fall into the feeding pipe 2a under the action of gravity. The feeding pipe 2a is connected to the feeding pipe 5a. The feeding pipe 5a is usually a sealed flexible pipe and can be tightly connected between the feeding pipe 2a and the throwing mechanism 3a. The throwing mechanism 3a consists of a motor and a throwing disc. The throwing disc can rotate under the action of the motor. By the rotation of the blades, negative pressure is generated at its center based on the principle of a centrifugal fan. The feed inlet 4a is connected to the center of the throwing mechanism 3a. The negative pressure of the throwing disc will act on the feed inlet 4a and be transmitted to the other end of the feeding pipe 5a, generating a high-speed airflow from the feed bin 1a to the throwing mechanism 3a. Therefore, the feed pellets entering the feeding pipe 2a will move towards the throwing mechanism 3a under the push of the airflow and be continuously thrown out from the throwing mechanism 3a. This pneumatic feeding machine is commonly used in the aquaculture field. In order to evenly spread the feed pellets into the water, the throwing mechanism needs to be installed on a floating body and placed in the middle of the pond, while the main machine needs to be placed on the shore for convenient feeding. Therefore, a pipeline is required to connect the main machine and the throwing mechanism, and the wind power generated by the throwing mechanism is used to extract feed pellets from the main machine and throw them out.

[0004] The most commonly used pneumatic feeding machine is a negative pressure pneumatic feeding machine, that is, negative pressure (air pressure lower than the ambient atmospheric pressure) is generated by the rotation of the throwing disc. As Figure 1 shown, the working principle of the throwing disc is equivalent to that of a centrifugal fan. When the throwing disc rotates, a low pressure is generated at the axis center, and the axis center of the throwing disc is closely matched with the feed inlet 4a. Therefore, a pressure difference will be generated on both sides of the feeding pipe 5a, and then the airflow will continuously flow from the feed bin outlet of the feed bin 1a to the throwing mechanism 3a. The feed pellets entering the feed bin outlet will continuously move towards the throwing mechanism 3a under the push of the airflow, and finally enter the throwing disc and be thrown out by the throwing disc. This device sucks the pellets by negative pressure, so it is called a negative pressure pneumatic feeding machine. Existing negative pressure pneumatic feeding machines will all adopt such as Figure 2The shown feeding mechanism (i.e., the blanking pipe) is used to connect the silo and the feeding pipe. As Figure 2 shown, a material inlet 1b is provided above the feeding mechanism. The material inlet 1b is usually of a funnel-shaped structure. The feed in the silo falls into the feeding mechanism under the action of gravity. The lower part of the feeding mechanism is a hollow round pipe, and its front side is a feeding pipe joint 2b connected to the feeding pipe. The feeding pipe is connected to the throwing disc at the far end. When the throwing disc works, a negative pressure will be generated in the feeding pipe and the feeding mechanism, sucking the feed particles entering the feeding mechanism to the throwing disc at the far end and throwing them out. The rear side of the feeding mechanism is an air inlet 3b. When the feeding machine works, the air flow enters from the air inlet 3b at the rear side of the feeding mechanism and flows towards the throwing disc at the far end under the push of the negative pressure, driving the feed particles to be transported to the far end. The negative pressure pneumatic feeding machine has a simple structure and low cost, but the generated air flow pressure is relatively low, and its feeding capacity for feed is weak. Therefore, the length of the feeding pipe cannot be too long, and the feeding speed is relatively slow. At the same time, it is also easy to cause pipeline blockage due to too fast blanking speed.

[0005] In the design of the negative pressure pneumatic feeding machine, when the feeding pipe is relatively long, due to the frictional resistance of the feeding pipeline, the pressure difference will gradually decrease after passing through the pipeline, resulting in a gradual decrease in the air flow speed from the silo into the feeding pipe. The longer the pipeline, the lower the air flow speed on the silo side. When the pipeline length reaches a certain level, the air flow speed will drop to a level where it is difficult to push the feed particles. In the design of the positive pressure pneumatic feeding machine, as Figure 3 shown, in order to increase the length of the feeding pipe 2c, a high-speed blower 4c can be added on one side of the main machine 3c to transport the feed particles to the throwing mechanism 1c at the far end.

[0006] Compared with the negative pressure pneumatic feeding machine, the positive pressure pneumatic feeding machine can provide a higher wind speed and feeding capacity. The negative pressure pneumatic feeding machine uses the negative pressure generated by the centrifugal fan to extract air from the pipeline. The upper limit of its pressure difference cannot exceed the atmospheric pressure in the environment, while the blower can provide an air flow far greater than the atmospheric pressure, providing a higher wind speed and enabling the feed particles to be delivered to a farther place. However, in the positive pressure pneumatic feeding machine, it is necessary to prevent the air flow from reversely entering the silo from the blanking port on the blower side. Therefore, a blanking mechanism that can prevent air leakage, usually called an air lock, is required.

[0007] As Figure 4As shown in the figure, the main structure of the air lock is to set a blanking turntable 2d with multiple blanking baffles between the material inlet 1d and the material outlet 3d. The blanking turntable 2d can rotate driven by an electric motor. The blanking turntable 2d is divided into multiple non - communicating compartments by the blanking baffles. After the feed pellets fall under the action of gravity from the material inlet 1d, they enter the upward - facing compartments of the blanking turntable 2d. When the blanking turntable 2d does not rotate, the feed pellets cannot fall further. When the blanking turntable 2d rotates driven by the electric motor, the upward - facing compartments will gradually rotate to the lower part, and the feed pellets during this period will fall from the lower material outlet 3d under the action of gravity. When the blanking turntable 2d rotates continuously, the feed pellets can be continuously transported from the material inlet 1d to the material outlet 3d. In order to prevent the air flow from flowing backward from the material outlet 3d to the material inlet 1d, the blanking turntable 2d and the cabin wall 4d must be closely fitted, leaving only a gap as small as possible. Therefore, when the blanking turntable 2d rotates, it is easy to get the feed pellets stuck between the cabin wall 4d and the blanking baffle, which easily leads to the jamming of the mechanism. In order to avoid the feed jamming the mechanism, a high - power and high - torque motor is usually used to forcibly crush the feed pellets to avoid jamming when jamming occurs. Therefore, the air lock has a high cost and the disadvantage of easily grinding the feed pellets.

[0008] To sum up, the existing negative - pressure pneumatic feeding machines and positive - pressure pneumatic feeding machines each have their own advantages and disadvantages. The negative - pressure pneumatic feeding machine has a low cost, a simple structure and is relatively durable, but the feeding speed is slow, the pipeline is easy to block, and the feeding distance is short; the positive - pressure pneumatic feeding machine has a fast feeding speed and is not easy to block, but it is easy to wear the feed, and has a complex structure, high cost, high failure rate, limited use scenarios, and there is also the situation that the pipeline may be blocked. Summary of the Invention

[0009] The purpose of the embodiments of the present invention is to provide a feeding mechanism and a pneumatic feeding machine, aiming to combine the advantages of the negative - pressure pneumatic feeding machine and the positive - pressure pneumatic feeding machine and avoid the respective disadvantages of the negative - pressure pneumatic feeding machine and the positive - pressure pneumatic feeding machine.

[0010] To solve the above - mentioned technical problems, the embodiments of the present invention provide a feeding mechanism for a pneumatic feeding machine, and the feeding mechanism includes:

[0011] A discharge pipe, one end of which is used to connect the feeding pipe of the pneumatic feeding machine;

[0012] A feed pipe, one end of which is connected to the end of the discharge pipe away from the feeding pipe. An upward - facing feed port is provided on the feed pipe, and the feed port is used to receive the feed pellets falling from the bin of the pneumatic feeding machine.

[0013] An air inlet pipe, one end of the air inlet pipe is connected to one end of the discharge pipe far from the feeding pipe, the air inlet pipe is located below the feeding pipe, one end of the air inlet pipe far from the discharge pipe is used to communicate with a blower, and the radial dimension of the connection between the air inlet pipe and the discharge pipe is smaller than the radial dimension of one end of the discharge pipe far from the feeding pipe.

[0014] The feeding mechanism of the present utility model is a positive and negative pressure feeding mechanism with low cost and high efficiency. The feeding mechanism can increase the feeding speed relative to the negative pressure feeding mechanism through a blower. The feeding mechanism can enable the pneumatic feeding machine not to use a rotary air lock valve, reduce the wear of feed pellets and lower the total equipment cost. The feeding mechanism is particularly suitable for scenarios where it is necessary to avoid the wear of feed pellets, and can significantly reduce costs and improve feeding efficiency.

[0015] Preferably, the radial dimension of the connection between the air inlet pipe and the discharge pipe is less than 2 / 3 of the radial dimension of one end of the discharge pipe far from the feeding pipe.

[0016] Preferably, the center of the connection between the air inlet pipe and the discharge pipe is lower than the center of one end of the discharge pipe far from the feeding pipe.

[0017] Preferably, the radial dimension of one end of the air inlet pipe close to the discharge pipe is gradually reduced in the air inlet direction of the air inlet pipe.

[0018] Preferably, one end of the feeding pipe far from the discharge pipe is closed to form a pressure measurement chamber at one end of the feeding pipe far from the discharge pipe. A barometer interface communicating with the pressure measurement chamber is provided at one end of the feeding pipe far from the discharge pipe, and the barometer interface is used to connect a barometer.

[0019] Preferably, the barometer interface is located above the feed inlet, and the feed inlet is located above the connection between the feeding pipe and the discharge pipe.

[0020] Preferably, a feed funnel is provided at the feed inlet.

[0021] Preferably, from one end of the feeding pipe close to the discharge pipe to one end of the feeding pipe far from the discharge pipe, the feeding pipe is gradually inclined upward.

[0022] To achieve the above object, the present utility model further provides a pneumatic feeding machine, including:

[0023] A feeding mechanism, the feeding mechanism is the above-mentioned feeding mechanism;

[0024] A feeding pipe, one end of the feeding pipe is connected to one end of the discharge pipe of the feeding mechanism far from the feeding pipe;

[0025] A silo, the feeding position of the silo is located above the feeding port of the feeding pipe, so that the feed pellets falling from the silo can enter the feeding pipe from the feeding port;

[0026] A blower, the blower is connected to one end of the air inlet pipe of the feeding mechanism away from the discharge pipe.

[0027] Preferably, the pneumatic feeding machine further includes a barometer and a controller. The barometer is connected to the barometer interface of the feeding pipe, and the controller is electrically connected to the barometer. The controller is used to control the feeding speed of the pneumatic feeding machine according to the measured air pressure of the barometer. Description of the Drawings

[0028] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the drawings do not constitute a proportional limitation.

[0029] Figure 1 It is a schematic structural diagram of a pneumatic feeding machine in the prior art;

[0030] Figure 2 It is a schematic structural diagram of the feeding mechanism of a negative pressure pneumatic feeding machine in the prior art;

[0031] Figure 3 It is a schematic structural diagram of a positive pressure pneumatic feeding machine in the prior art;

[0032] Figure 4 It is a schematic structural diagram of the air lock of a positive pressure pneumatic feeding machine in the prior art;

[0033] Figure 5 It is a schematic structural diagram of the feeding mechanism in the embodiment of the present invention;

[0034] Figure 6 For Figure 5 a cross-sectional view of the feeding mechanism in

[0035] Figure 7 It is a schematic structural diagram of the main body of the pneumatic feeding machine in the embodiment of the present invention.

[0036] Explanation of the reference numerals in the drawings of the present invention:

[0037] Pneumatic feeding machine 1000, feeding mechanism 100, discharge pipe 1, feeding pipe 2, feeding port 21, air pressure measurement chamber 22, barometer interface 23, feeding funnel 24, air nozzle 25, feeding pipe plug 26, air inlet pipe 3, air inlet 31, mounting bracket 4, silo 200, silo feeding port 210, feeder 220, blower 300, controller 400.

[0038] The realization, functional features, and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0042] The present utility model provides a feeding mechanism, which can be applied to a pneumatic feeding machine. Figure 5 and Figure 6 shows a preferred embodiment of the feeding mechanism provided by the present utility model.

[0043] Please refer to Figure 5 and Figure 6 , in this embodiment, the feeding mechanism 100 includes a discharge pipe 1, a feed pipe 2, and an air inlet pipe 3.

[0044] Please refer to Figures 5 to 7 , one end of the discharge pipe 1 is used to connect the feed pipe (not shown in the figure) of the pneumatic feeding machine 1000.

[0045] Specifically, the feeding mechanism 100 is used for the pneumatic feeding machine 1000. The discharge pipe 1 is usually a straight circular pipe. One end of the discharge pipe 1 is connected to the feeding pipe to communicate the discharge pipe 1 with the feeding pipe. Hereinafter, the extending direction of the discharge pipe 1 is defined as the front-rear direction, and the end of the discharge pipe 1 connected to the feeding pipe is the front end of the discharge pipe 1.

[0046] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, the feeding mechanism 100 further includes a mounting bracket 4, and the rear end of the discharge pipe 1 is arranged on the mounting bracket 4. The mounting bracket 4 can support the discharge pipe 1.

[0047] Please refer to Figures 5 to 7 , one end of the feeding pipe 2 is connected to the end of the discharge pipe 1 away from the feeding pipe. An upward feeding port 21 is arranged on the feeding pipe 2, and the feeding port 21 is used to receive the feed pellets falling from the bin 200 of the pneumatic feeding machine 1000.

[0048] Specifically, the front end of the feeding pipe 2 is connected to the rear end of the discharge pipe 1 to communicate the discharge pipe 1 with the feeding pipe 2. An upward feeding port 21 is arranged on the feeding pipe 2, and the discharging position of the bin 200 is directly above the feeding port 21 of the feeding pipe 2. The feed pellets in the bin 200 can fall from the discharging position under the action of gravity. The falling feed pellets can enter the feeding pipe 2 from the feeding port 21. Finally, the feed pellets entering the feeding pipe 2 will leave the feeding mechanism 100 through the discharge pipe 1 and enter the feeding pipe to transport the feed pellets to the throwing mechanism of the pneumatic feeding machine 1000.

[0049] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, a feeding funnel 24 is arranged at the feeding port 21. The feeding port 21 is a funnel structure with an upward opening to receive the feed pellets falling from the bin 200 through the feeding funnel 24.

[0050] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, from the end of the feeding pipe 2 close to the discharge pipe 1 to the end of the feeding pipe 2 away from the discharge pipe 1, the feeding pipe 2 is gradually inclined upward. The feeding pipe 2 is arranged with the front end lower and the rear end higher. The feeding pipe 2 is a circular pipe inclined downward. The feeding pipe 2 can be an arc-shaped pipe or a straight pipe, so as to form a feeding pipe inclined surface on the inner pipe wall of the feeding pipe 2, so that the feed pellets entering the feeding pipe 2 can be reflected by the feeding pipe inclined surface and move towards the discharge pipe 1.

[0051] Optionally, please refer to Figure 5 and Figure 6, in this embodiment, the end of the feed pipe 2 away from the discharge pipe 1 is closed to form a pressure measurement chamber 22 at the end of the feed pipe 2 away from the discharge pipe 1. A barometer interface 23 communicating with the pressure measurement chamber 22 is provided at the end of the feed pipe 2 away from the discharge pipe 1, and the barometer interface 23 is used to connect a barometer (not shown in the figure).

[0052] Specifically, a feed pipe plug 26 is provided at the rear end of the feed pipe 2 to make the rear end of the feed pipe 2 closed, thereby forming a pressure measurement chamber 22 at the rear end of the feed pipe 2. The pressure measurement chamber 22 communicates with the feed inlet 21, so the pressure measurement chamber 22 and the feed inlet 21 have the same air pressure. An upward barometer interface 23 is provided on the upper cavity wall of the pressure measurement chamber 22. A nozzle 25 is usually provided at the barometer interface 23. The barometer interface 23 is connected to the barometer through the nozzle 25. The nozzle 25 is a hollow thin tube and the nozzle 25 communicates with the pressure measurement chamber 22.

[0053] When the speed of the feed particles entering the feeding mechanism 100 is too fast, due to the increased pipeline resistance of the feeding mechanism 100, the air flow speed in the feeding mechanism 100 decreases. Therefore, the air pressure in the feeding mechanism 100 will rise. After measuring the air pressure through the barometer connected to the nozzle 25, the air flow speed in the feeding mechanism 100 can be judged. When the pipeline air pressure value of the feeding mechanism 100 is lower than the preset threshold value, it means that there is a local congestion in the pipeline of the feeding mechanism 100. At this time, the speed of the feed entering the feeding mechanism 100 should be reduced, or the feed entering the feeding mechanism 100 should be paused until the pipeline air pressure value of the feeding mechanism 100 returns above the preset threshold value, and then continue to feed.

[0054] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, the barometer interface 23 is located above the feed inlet 21, and the feed inlet 21 is located above the connection of the feed pipe 2 to the discharge pipe 1. Setting the pressure measurement chamber 22 and the barometer interface 23 at the rear side of the feed inlet 21 can significantly reduce the influence of the turbulence caused by the falling of the feed particles on the pressure measurement, and a more accurate pipeline air pressure value can be obtained.

[0055] Please refer to Figures 5 to 7 , one end of the intake pipe 3 is connected to the end of the discharge pipe 1 away from the feed pipe. The intake pipe 3 is located below the feed pipe 2. The end of the intake pipe 3 away from the discharge pipe 1 is used to communicate with the blower 300. The radial dimension of the connection of the intake pipe 3 to the discharge pipe 1 is smaller than the radial dimension of the end of the discharge pipe 1 away from the feed pipe.

[0056] Specifically, the front end of the intake pipe 3 is arranged on the mounting bracket 4. The front end of the intake pipe 3 is provided with a forward air inlet 31. The front end of the intake pipe 3 is connected to the rear end of the discharge pipe 1 so that the intake pipe 3 communicates with the feed pipe 2 through the air inlet 31. The rear end of the intake pipe 3 communicates with the blower 300. The intake pipe 3 is a circular pipe, and the diameter of the air inlet 31 of the intake pipe 3 is smaller than the diameter of the discharge pipe 1. Among them, the blower 300 can be a blower or the like. Hereinafter, the blower 300 will be taken as an example of a blower for introduction.

[0057] After the air flow of the blower enters the intake pipe 3 from the rear side and then passes forward through the air inlet 31 into the discharge pipe 1. Since the diameter of the air inlet 31 is smaller than the diameter of the discharge pipe 1, the blower air flow will expand after leaving the air inlet 31, generating a low-pressure area of the Venturi effect. The air pressure in this low-pressure area is lower than the ambient air pressure above the feeding mechanism 100, so the blower air flow will not backflow upward from the feeding port 21. After the feed particles inhaled from the feeding port 21 fall into the feed pipe 2, they will be driven forward by the blower air flow and enter the feed pipe, and thus be conveyed to the throwing mechanism. Therefore, the feeding mechanism 100 does not need to adopt a shut-off valve of a common positive-pressure pneumatic feeding machine, which can effectively reduce the wear of feed particles and reduce the overall cost of the equipment.

[0058] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, the radial dimension of the connection part of the intake pipe 3 and the discharge pipe 1 is less than 2 / 3 of the radial dimension of the end of the discharge pipe 1 away from the feed pipe. The diameter of the air inlet 31 is less than 2 / 3 of the diameter of the discharge pipe 1.

[0059] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, the center of the connection part of the intake pipe 3 and the discharge pipe 1 is lower than the center of the end of the discharge pipe 1 away from the feed pipe. The center of the air inlet 31 is located below the center of the cross-section of the discharge pipe 1.

[0060] Optionally, please refer to Figure 5 and Figure 6 , in this embodiment, the radial dimension of the end of the intake pipe 3 close to the discharge pipe 1 is gradually decreased in the intake direction of the intake pipe 3. The intake direction of the intake pipe 3 is from the rear to the front, and the diameter of the front end of the intake pipe 3 is gradually decreased from the rear to the front.

[0061] The feeding mechanism 100 of the present utility model is a positive and negative pressure feeding mechanism with low cost and high efficiency. The feeding mechanism 100 can increase the feeding speed relative to the negative pressure feeding mechanism through the blower 300. The feeding mechanism 100 can enable the pneumatic feeding machine 1000 not to use a shut-off valve, reduce the wear of feed particles and reduce the total cost of the equipment. The feeding mechanism 100 is particularly suitable for scenarios where the wear of feed particles needs to be avoided, and can significantly reduce costs and improve feeding efficiency.

[0062] The feeding mechanism 100 can solve the problem of reverse air flow and at the same time provide a mechanism for measuring the air flow velocity in the pipeline. The feeding mechanism 100 can increase the feeding speed relative to the negative pressure feeding mechanism through the air blower 300. The feeding mechanism 100 controls the flow rate by measuring the air pressure, which can completely avoid pipeline blockage and prevent feed particles from overflowing due to the reverse flow of air from the feed inlet 21. The feeding mechanism 100 can enable the pneumatic feeding machine 1000 not to use a rotary air lock, reduce the wear of feed particles and lower the total equipment cost. The feeding mechanism 100 can accurately measure the air flow velocity in the pipeline, and the measurement is not affected by the feeding speed and size of feed particles, so the control is more accurate.

[0063] The present utility model also provides a pneumatic feeding machine, which can be a positive and negative pressure pneumatic feeding machine. The pneumatic feeding machine includes a feeding mechanism. Since the feeding mechanism adopts the technical solution of the above embodiment, it has the beneficial effects brought by the technical solution of the above embodiment. Figure 7 Fig. shows a preferred embodiment of the pneumatic feeding machine provided by the present utility model.

[0064] Please refer to Figure 7 , in this embodiment, the pneumatic feeding machine 1000 further includes a feeding pipe, a storage bin 200 and an air blower 300. One end of the feeding pipe is connected to the end of the discharge pipe 1 of the feeding mechanism 100 away from the feeding pipe 2; the feeding position of the storage bin 200 is located above the feed inlet 21 of the feeding pipe 2, so that the feed particles falling from the storage bin 200 can enter the feeding pipe 2 from the feed inlet 21; the air blower 300 is connected to the end of the intake pipe 3 of the feeding mechanism 100 away from the discharge pipe 1.

[0065] Specifically, the feeding mechanism 100, the storage bin 200 and the air blower 300 form the main body of the pneumatic feeding machine 1000. The main body of the pneumatic feeding machine 1000 is connected to the throwing mechanism of the pneumatic feeding machine 1000 through the feeding pipe. The throwing mechanism of the pneumatic feeding machine 1000 can be the same as that of the existing negative pressure pneumatic feeding machine.

[0066] The storage bin 200 is used to hold feed particles. A storage bin discharge opening 210 is provided at the lower part of the storage bin 200, and the feed particles will fall from the storage bin discharge opening 210 under the action of gravity. Below the storage bin discharge opening 210 is a feeder 220. The feeder 220 is a mechanically driven by electricity and will prevent the continuous falling of feed when not powered on, while it will evenly transport the feed particles to the feed inlet 21 of the feeding mechanism 100 when powered on. The feeder 220 is used to control whether the feed particles can enter the feeding mechanism 100 and then continue to be sent to the throwing mechanism under the action of air flow. Among them, the feeder 220 can be a vibrating feeder or a screw feeder, etc.

[0067] Optionally, please refer toFigure 7 , in this embodiment, the pneumatic feeding machine 1000 further includes a barometer and a controller 400. The barometer is connected to the barometer interface 23 of the feeding pipe 2, and the controller 400 is electrically connected to the barometer. The controller 400 is used to control the feeding speed of the pneumatic feeding machine 1000 according to the measured air pressure of the barometer.

[0068] Specifically, the controller 400 is electrically connected to the barometer, the feeder 220, and the blower 300. When the speed of the feed pellets entering the feeding mechanism 100 is too fast, due to the increased pipeline resistance of the feeding mechanism 100, the air flow speed in the feeding mechanism 100 decreases. Therefore, the air pressure in the feeding mechanism 100 will rise. After measuring the air pressure through the barometer connected to the air nozzle 25, the air flow speed in the feeding mechanism 100 can be judged. When the pipeline air pressure value of the feeding mechanism 100 is lower than the preset threshold, it indicates that there is a local congestion in the pipeline of the feeding mechanism 100. At this time, the speed of the feed entering the feeding mechanism 100 should be reduced, or the feed entering the feeding mechanism 100 should be paused until the pipeline air pressure value of the feeding mechanism 100 returns above the preset threshold, and then continue feeding.

[0069] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A feeding mechanism for a pneumatic feeding machine, characterized in that The feeding mechanism includes: A discharge pipe, one end of which is used to connect to the feeding pipe of the pneumatic feeder. A feeding pipe, one end of which is connected to the end of the discharge pipe away from the feeding pipe. An upward feeding port is provided on the feeding pipe, and the feeding port is used to receive the feed pellets falling from the bin of the pneumatic feeder. An air inlet pipe, one end of which is connected to the end of the discharge pipe away from the feeding pipe. The air inlet pipe is located below the feeding pipe. The end of the air inlet pipe away from the discharge pipe is used to communicate with a blower. The radial dimension of the air inlet pipe at the connection with the discharge pipe is smaller than the radial dimension of the end of the discharge pipe away from the feeding pipe.

2. The feeding mechanism according to claim 1, wherein, The radial dimension of the air inlet pipe at the connection with the discharge pipe is less than 2 / 3 of the radial dimension of the end of the discharge pipe away from the feeding pipe.

3. The feeding mechanism according to claim 1, wherein The center of the air inlet pipe at the connection with the discharge pipe is lower than the center of the end of the discharge pipe away from the feeding pipe.

4. The feeding mechanism according to claim 1, wherein, The radial dimension of the end of the air inlet pipe close to the discharge pipe is gradually decreasing in the air inlet direction of the air inlet pipe.

5. The feeding mechanism according to claim 1, characterized in that The end of the feeding pipe away from the discharge pipe is closed to form a pressure measurement chamber at the end of the feeding pipe away from the discharge pipe. A barometer interface communicating with the pressure measurement chamber is provided at the end of the feeding pipe away from the discharge pipe, and the barometer interface is used to connect to a barometer.

6. The feeding mechanism according to claim 5, wherein The barometer interface is located above the feeding port, and the feeding port is located above the connection of the feeding pipe to the discharge pipe.

7. The feeding mechanism according to claim 1, characterized in that, A feeding funnel is provided at the feeding port.

8. The feeding mechanism according to claim 1, wherein, From the end of the feeding pipe close to the discharge pipe to the end of the feeding pipe away from the discharge pipe, the feeding pipe is gradually inclined upward.

9. A pneumatic feeding machine, characterized in that, Includes: A feeding mechanism, which is the feeding mechanism according to any one of claims 1-8. A feeding pipe, one end of which is connected to the end of the discharge pipe of the feeding mechanism away from the feeding pipe. A bin, the discharging position of which is located above the feeding port of the feeding pipe, so that the feed pellets falling from the bin can enter the feeding pipe from the feeding port. A blower, which communicates with the end of the air inlet pipe of the feeding mechanism away from the discharge pipe.

10. The pneumatic feeding machine according to claim 9, characterized in that, The pneumatic feeder further includes a barometer and a controller. The barometer is connected to the barometer interface of the feeding pipe, and the controller is electrically connected to the barometer. The controller is used to control the feeding speed of the pneumatic feeder according to the measured air pressure of the barometer.

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