A feeding system and control method

Abstract

The application discloses a feeding system and a control method, and relates to the technical field of feeding devices. The feeding system comprises a material barrel, a discharging pipe and a material pumping device. The material pumping device comprises an air inlet pipe and a discharging pipe. The discharging pipe, the air inlet pipe and the discharging pipe are in communication with each other. A nozzle is arranged at the end of the air inlet pipe facing the discharging pipe. The nozzle has a channel with a gradually decreasing inner diameter, thereby forming a low air pressure to realize the material pumping function. Moreover, the nozzle extends from the air inlet pipe to the discharging pipe, thereby avoiding the generation of turbulent flow when the material is mixed with high-pressure gas, and reducing the possibility of the material being blocked in the communication cavity. The control method comprises detecting the temperature value and the humidity value in the containing cavity, and comparing the temperature value and the humidity value with preset threshold values. The temperature and the humidity in the containing cavity are kept at stable values suitable for material storage by starting a circulating device and a drying device, respectively. The material is prevented from being bonded due to high temperature and high humidity, or the material is prevented from being condensed due to low temperature, and the material has good fluidity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feeding devices, in particular to a feeding system and a control method. BACKGROUND

[0002] In the related art, automatic feeders are widely used in the breeding industry to achieve timed and quantitative feeding, thereby reducing the labor intensity of breeders. The automatic feeders currently used generally extract feed in a feed tank by vacuum extraction and deliver the feed to a preset position. However, the current vacuum extraction structure has low extraction efficiency, and the feed is prone to be blocked at the intersection of the pipeline during vacuum extraction, which affects the feeding efficiency. In severe cases, manual unblocking is required, which is time-consuming and labor-intensive. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a feeding system and a control method, which can improve the feeding efficiency and avoid blockage.

[0004] According to the feeding system of the first aspect of the present application, the feeding system comprises:

[0005] The feed tank has a containing cavity for storing material.

[0006] The discharge pipe is arranged at the bottom of the feed tank and communicates with the containing cavity.

[0007] The extraction device comprises a fan, an air inlet pipe and a discharge pipe. The discharge pipe is connected between the air inlet pipe and the discharge pipe, and the discharge pipe, the air inlet pipe and the discharge pipe are in communication with the communication cavity. The air inlet pipe is provided with a nozzle at the end of the discharge pipe. The nozzle has a channel with a gradually decreasing inner diameter, and the nozzle extends from the air inlet pipe into the discharge pipe. The high-pressure gas generated by the fan can pass through the air inlet pipe, the nozzle and the discharge pipe in sequence, so as to generate a low-pressure area in the communication cavity, thereby extracting the material and discharging the material from the discharge pipe.

[0008] The drying device is provided with a drying machine and an air pipe. The air pipe is inserted into the containing cavity and has a plurality of air holes. The drying machine is used to generate dry air and inject it into the containing cavity through the air holes.

[0009] The outer periphery of the containing cavity is provided with a heat preservation cavity. The outer periphery of the feed tank is provided with a water inlet pipe and a drain pipe. The circulating device can inject heat preservation water into the heat preservation cavity to adjust the temperature of the material in the containing cavity.

[0010] According to the feeding system of the first aspect of the present application, at least the following beneficial effects are achieved:

[0011] The embodiment is provided with a material barrel, a discharging pipe, a material pumping device, a drying device and a circulating device. The material pumping device comprises an air inlet pipe and a material discharge pipe. The discharging pipe, the air inlet pipe and the material discharge pipe are in communication with each other. A nozzle is arranged at the end of the air inlet pipe facing the material discharge pipe. The nozzle has a channel with a gradually decreasing inner diameter, thereby forming a low-pressure area to realize the pumping function. Moreover, the nozzle extends from the air inlet pipe into the material discharge pipe, thereby avoiding turbulent flow when the material is mixed with high-pressure gas, and reducing the possibility of blockage of the material in the communication cavity. The drying device is used to inject dry air into the containing cavity, thereby reducing the humidity of the material, avoiding adhesion, improving the flowability of the material and improving the feeding efficiency. The circulating device adjusts the temperature of the material by injecting heat preservation water at the outer periphery of the containing cavity, thereby avoiding adhesion of the material due to large temperature changes, and improving the feeding efficiency.

[0012] According to the embodiment of the first aspect of the present application, the nozzle comprises a mounting section, a taper section and an extension section. The taper section is located between the mounting section and the extension section. The outer periphery of the taper section has a concave taper surface. The outer diameter of the extension section is smaller than the inner diameter of the material discharge pipe.

[0013] According to the embodiment of the first aspect of the present application, the nozzle comprises a mounting section, a taper section and an extension section. The outer periphery of the end of the extension section away from the mounting section has an arc surface. Along the axis of the nozzle, the outer diameter of the extension section gradually decreases from the mounting section to the extension section.

[0014] According to the embodiment of the first aspect of the present application, a starting gas tank is further provided. The starting gas tank is connected to the air inlet pipe. The starting gas tank comprises a gas storage cavity and a gas pressure sensor. The gas storage cavity can store gas with a preset pressure. During the pumping of the material, the gas in the gas storage cavity can be injected into the air inlet pipe to improve the starting efficiency.

[0015] According to the embodiment of the first aspect of the present application, the end of the discharging pipe away from the material barrel is provided with a flow guide plate. The two sides of the flow guide plate have helical guide surfaces.

[0016] According to the embodiment of the first aspect of the present application, the inner wall of the channel comprises a first wall surface and a second wall surface in the form of arc-shaped taper surfaces. The first wall surface and the second wall surface are connected to each other.

[0017] According to the embodiment of the first aspect of the present application, the maximum inner diameter of the air inlet pipe is smaller than the minimum inner diameter of the material discharge pipe.

[0018] According to the embodiment of the first aspect of the present application, the air pipe comprises a plurality of branch pipes. The branch pipes are arranged obliquely relative to the air pipe. The two sides of the branch pipes are provided with air permeable holes.

[0019] According to the embodiment of the first aspect of the present application, the drying device further comprises a temperature sensor, a humidity sensor, a drying machine and an air pipe. The temperature sensor and the humidity sensor are installed in the material barrel and can detect the temperature and humidity in the containing cavity. The air pipe is pivotally connected to the top wall of the material barrel.

[0020] According to the embodiment of the second aspect of the present application, a control method is provided, which is applied to the feeding system described above. The control method comprises the following steps:

[0021] The temperature value T and the humidity value H in the containing cavity are detected, and the temperature value T is compared with the first temperature threshold value T0, the temperature value T is compared with the second temperature threshold value T1, and the humidity value H is compared with the humidity threshold value H0;

[0022] When T>T0 and H>H0, the circulating device and the drying device are started, the circulating device injects the heat preservation water into the heat preservation cavity, and the drying device injects the dry air into the containing cavity;

[0023] When T>T0 and H≤H0, the circulating device is started, and the circulating device injects the heat preservation water into the heat preservation cavity;

[0024] When T1≤T≤T0 and H>H0, the drying device is started, and the drying device injects the dry air into the containing cavity;

[0025] When T

[0026] When T

[0027] Wherein, T1=10℃, T2=30℃, 22℃≤T0≤25℃, 50%≤H0≤55%.

[0028] According to the control method of the embodiment of the second aspect of the present application, at least the following beneficial effects are achieved:

[0029] In the embodiment, the temperature value and the humidity value in the containing cavity are detected, and the temperature value and the humidity value are compared with the preset threshold value, the temperature and the humidity in the containing cavity are kept at the stable values suitable for the material storage by starting the circulating device and the drying device respectively, so that the material is prevented from being bonded due to the too high temperature and the too high humidity, or the material is prevented from being condensed due to the too low temperature, so that the material has good fluidity, and the feeding efficiency is improved.

[0030] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] The present application will be further described below in combination with the drawings and embodiments, in which:

[0032] Figure 1It is a shaft measurement view of a feeding system in the embodiment of the present application;

[0033] Figure 2 It is a first sectional view of the material extraction device in the embodiment of the present application;

[0034] Figure 3 It is Figure 2 It is an enlarged view of A in the middle;

[0035] Figure 4 It is a second sectional view of the material extraction device in the embodiment of the present application;

[0036] Figure 5 It is a sectional view of the nozzle in the embodiment of the present application;

[0037] Figure 6 It is a shaft measurement view of the nozzle in the embodiment of the present application;

[0038] Figure 7 It is a sectional view of a feeding system in the embodiment of the present application;

[0039] Figure 8 It is an installation schematic view of the water circulation device and the drying device in the embodiment of the present application;

[0040] Figure 9 It is a flow chart of the control method in the embodiment of the present application.

[0041] Reference signs:

[0042] Bucket 100; discharging pipe 101; flow guide plate 102; guide surface 103; connecting pipe 104; heat preservation cavity 105; water inlet pipe 106; drain pipe 107; containing cavity 108; connector 109; discharging channel 1091;

[0043] Nozzle 110; mounting section 111; taper section 112; extension section 113; taper surface 114; protruding block 115; auxiliary hole 116; air inlet hole 117; communication pipe 118; passage 119; first wall surface 1191; second wall surface 1192; third wall surface 1193; arc surface 120; positioning block 122;

[0044] Air inlet pipe 131; discharging pipe 132; communication cavity 133; positioning groove 134; main air outlet pipe 135;

[0045] Air pipe 141; center pipe 142; branch pipe 143; air permeable hole 144; rotating motor 145; temperature sensor 146; humidity sensor 147;

[0046] Starting gas tank 150; auxiliary pipe 151. DETAILED DESCRIPTION

[0047] Embodiments of the present application are described below in the accompanying drawings, in which like reference numerals refer to like elements or elements with similar functionality throughout. The embodiments described below are exemplary and are not intended to limit the present application, solely based on the description presented herein.

[0048] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0049] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0050] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0051] Referring to Figure 1 and Figure 2 In one feeding system according to an embodiment of the first aspect of the present application, the feeding system comprises a feeding barrel 100 and a material drawing device. The feeding barrel 100 has a containing cavity 108 for storing material. In this embodiment, the feeding barrel 100 is used for storing granular feed. The bottom of the feeding barrel 100 is provided with a plurality of discharge pipes 101, and the plurality of discharge pipes 101 can communicate with the containing cavity 108, so that the feed can be discharged from the discharge pipes 101.

[0052] It can be understood that the material extraction device comprises a fan (not shown in the figure), an air inlet pipe 131 and a material outlet pipe 132, the material outlet pipe 101 is connected between the air inlet pipe 131 and the material outlet pipe 132, and the material outlet pipe 101, the air inlet pipe 131 and the material outlet pipe 132 are communicated with each other in the communication cavity 133, the air inlet pipe 131 is provided with a nozzle 110 at the end of the material outlet pipe 132, and the nozzle 110 extends into the material outlet pipe 132 from the air inlet pipe 131, and the nozzle 110 has a channel 119 with a gradually decreasing inner diameter. It can be understood that the air inlet pipe 131 is connected to the fan, and the fan can input high-pressure gas into the air inlet pipe 131, and the high-pressure gas passes through the channel 119 in the nozzle 110, and the inner diameter of the channel 119 gradually decreases, so that the flow rate of the high-pressure gas increases after passing through the channel 119, thereby generating low air pressure in the communication cavity 133, which can produce suction effect on the material in the material outlet pipe 101, and make the material flow from the material outlet pipe 101 to the material outlet pipe 132, and the high-pressure gas pushes the material out of the material outlet pipe 132, thereby realizing the feeding function. Further, referring to Figure 3 , the outer periphery of the nozzle 110 is provided with an auxiliary hole 116, the auxiliary hole 116 is communicated with the air inlet pipe 131, and the auxiliary hole 116 can discharge high-pressure gas to make the outer periphery wall of the nozzle 110 have auxiliary airflow, which can reduce the resistance of the material moving on the surface of the nozzle 110, reduce the adhesion of the material on the surface of the nozzle 110, and improve the flow efficiency of the material, thereby improving the feeding efficiency.

[0053] Specifically, the bottom of the material bucket 100 is provided with a plurality of material outlet pipes 101, which can realize feeding in multiple directions, and two material outlet pipes 101 are used in this embodiment. Further, the bottom of the material bucket 100 is provided with a connector 109, the connector 109 has two material outlet channels 1091 therein, the material outlet channels 1091 are communicated with the material outlet pipes 101, and the material in the containing cavity 108 can fall into the material outlet pipes 101 through the material outlet channels 1091.

[0054] It can be understood that the exhaust end of the fan is connected with a main exhaust pipe 135, and the main exhaust pipe 135 is communicated with the two air inlet pipes 131. It can be understood that the minimum inner diameter of the main exhaust pipe 135 is greater than the maximum inner diameter of the air inlet pipe 131, so as to ensure that the flow rate of the high-pressure gas can be increased when passing through the air inlet pipe 131. At the same time, the maximum inner diameter of the air inlet pipe 131 is smaller than the minimum inner diameter of the material outlet pipe 132, so as to ensure that there is enough space in the material outlet pipe 132 for the high-pressure gas and the material to mix, thereby improving the flow efficiency of the material.

[0055] Referring to Figure 2 It can be understood that the material extraction device comprises a connecting pipe 104, the connecting pipe 104 has three connecting parts, the three connecting parts are respectively sleeved with the air inlet pipe 131, the material outlet pipe 101 and the material outlet pipe 132 and communicate the three pipes with each other, and the communication cavity 133 is located in the connecting pipe 104. In fact, the connecting pipe 104 is a three-way connecting piece.

[0056] It can be understood that the nozzle 110 comprises a mounting section 111, a taper section 112 and an extension section 113, the radial outer peripheral wall of the mounting section 111 is matched with the inner peripheral wall of the connecting pipe 104, the taper section 112 is located between the mounting section 111 and the extension section 113, the outer periphery of the taper section 112 has a taper surface 114, and the outer diameter of the extension section 113 is smaller than the inner diameter of the discharge pipe 132, so that there is a space between the outer peripheral wall of the extension section 113 and the inner peripheral wall of the discharge pipe 132, which allows the material to pass through.

[0057] With reference to Figure 4 and Figure 5 It can be understood that, from the direction of the air inlet pipe 131 to the discharge pipe 132, the inner wall of the channel 119 comprises a first wall surface 1191, a second wall surface 1192 and a third wall surface 1193 connected in sequence, the first wall surface 1191 is an arc-shaped conical surface concave inward, which can guide the high-pressure gas into the channel 119, and the first wall surface 1191 is tangent to the axis direction of the air inlet pipe 131 at the end of the nozzle 110 facing the air inlet pipe 131, which can reduce the noise and vibration caused by the sudden change of the high-pressure gas. Further, the second wall surface 1192 is an arc-shaped conical surface convex outward to the channel 119, and the third wall surface 1193 is a cylindrical surface, the second wall surface 1192 can smoothly connect the first wall surface 1191 and the third wall surface 1193, compared with the straight taper surface in the prior art, it can avoid the sudden change of the high-pressure gas in the channel 119, which is beneficial to reduce the air flow resistance, noise and vibration.

[0058] It can be understood that the nozzle 110 is located at the bottom of the discharging pipe 101, during the feeding process, the material falls from the discharging pipe 101 to the surface of the nozzle 110 and can produce friction with the outer peripheral wall of the taper section 112, and the outer peripheral wall of the taper section 112 has the taper surface 114 which can reduce the moving resistance of the material. Specifically, the outer peripheral wall of the taper section 112 has the concave taper surface 114, and the outer peripheral wall of the extension section 113 is a cylindrical surface, the taper surface 114 of the taper section 112 is tangent to the outer peripheral wall of the extension section 113 at the end away from the air inlet pipe 131, which can avoid the direct collision of the material with the outer peripheral wall of the nozzle 110, which helps to reduce the resistance of the material flowing on the surface of the nozzle 110, thereby improving the flow speed of the material and being beneficial to improve the feeding efficiency.

[0059] It can be understood that the end of the mounting section 111 is provided with a protrusion 115, the protrusion 115 has a side wall around the outer periphery of the taper section 112 towards the side wall of the taper section 112, and the protrusion 115 is provided with a plurality of auxiliary holes 116 towards the side wall of the taper section 112, the nozzle 110 is provided with a plurality of communication tubes 118, the other end of the communication tube 118 away from the auxiliary hole 116 is provided with an air inlet hole 117, the high-pressure gas can enter the communication tube 118 from the air inlet hole 117 and be discharged from the auxiliary hole 116, so as to generate an auxiliary air flow on the taper surface 114 of the taper section 112. It can be understood that the air inlet hole 117 is located at the end of the first wall surface 1191 away from the second wall surface 1192, the curvature change of the first wall surface 1191 here is relatively gentle, so that the high-pressure gas entering the air inlet hole 117 will not change the angle greatly, which is beneficial to reduce the air flow resistance, reduce noise and vibration, and can save the kinetic energy of the air flow.

[0060] It can be understood that during the feeding process, the material flows rapidly in the communication cavity 133 and continuously rubs against the outer peripheral wall of the nozzle 110, and the outer peripheral wall of the nozzle 110 will generate more heat, especially the peripheral wall of the side towards the discharge pipe 101, and the surface of the material (i.e. feed) has sugar, and part of the material fragments will be left on the outer peripheral wall of the nozzle 110 during the conveying of the material, and when the surface temperature of the nozzle 110 continues to rise, the fragments of the material will adhere to the outer peripheral wall of the nozzle 110 (mainly the outer wall of the taper section 112), thereby increasing the resistance of the material flowing on the outer peripheral wall of the nozzle 110, and the moving speed of the material will be reduced, affecting the feeding efficiency. At this time, since the auxiliary hole 116 is towards the taper surface 114 of the taper section 112, the auxiliary air flow can flow along the concave taper surface 114 of the taper section 112, forming a separated air flow layer on the surface of the taper surface 114, which can reduce the contact and friction resistance of the material with the taper surface 114, thereby reducing the temperature rise of the material to reduce the possibility of adhesion on the taper surface 114. Secondly, the continuously flowing auxiliary air flow can continuously cool the taper surface 114, which can also reduce the temperature rise of the material and reduce the incidence of adhesion. Thirdly, since the air inlet hole 117 and the auxiliary hole 116 have small diameters, the flow rate of the high-pressure gas entering the communication tube 118 and being discharged from the auxiliary hole 116 can be obviously increased, so as to push the material located on the outer periphery of the taper section 112, further reducing the adhesion of the material on the nozzle 110, thereby achieving the effect of increasing the flow speed of the material.

[0061] It can be understood that the protruding block 115 is arranged on the side of the nozzle 110 facing the outer wall of the downcomer 101, and a plurality of auxiliary holes 116 are arranged on the protruding block 115 around the axis direction of the nozzle 110 to form a stable auxiliary gas flow on the outer wall of the downcomer 101 facing the nozzle 110. It can be understood that the gas is discharged from the auxiliary hole 116 and forms an auxiliary gas flow, which actually increases the air pressure in the peripheral area of the nozzle 110, in other words, it "destroys the vacuum degree", which is not conducive to the extraction of the material. Therefore, in this embodiment, the protruding block 115 and the auxiliary hole 116 are arranged only on the side of the nozzle 110 facing the downcomer 101, because the material mainly rubs against the outer wall of the nozzle 110 facing the downcomer 101, and at the same time, it is also to reduce the adverse effect on the extraction of the material.

[0062] Correspondingly, with reference to Figure 4 and Figure 5 , the outer periphery of the mounting section 111 is provided with a protruding positioning block 122, and the inner peripheral wall of the connecting pipe 104 is provided with a positioning groove 134, and the positioning block 122 can be embedded in the positioning groove 134, so that during installation, the cooperation of the positioning block 122 and the positioning groove 134 can ensure that the protruding block 115 is located on the side of the nozzle 110 facing the downcomer 101, which is beneficial to reduce the installation difficulty.

[0063] It can be understood that the nozzle 110 extends from the air inlet pipe 131 to the discharge pipe 132, that is, the end of the extension section 113 is located in the downcomer 101. When the high-pressure gas passes through the channel 119, due to the decrease in the inner diameter of the end of the channel 119, the high-pressure gas can accelerate in the channel and be sprayed out at high speed at the end of the extension section 113, so that a certain range of low-pressure area can be generated on the outer periphery of the end of the extension section 113. Compared with the prior art in which the low-pressure area is located at the center of the communication cavity 133, the extension section 113 located in the discharge pipe 132 can offset the low-pressure area to the downcomer 101, which can avoid the mixture of the material falling from the downcomer 101 with the high-speed high-pressure gas in the communication cavity 133 to generate vortex, thereby avoiding the rebound of the material particles from the wall of the connecting pipe 104, which is beneficial to improve the efficiency and improve the feeding efficiency.

[0064] Further, a guide plate 102 is arranged at the end of the downcomer 101 away from the hopper 100, and the guide plate 102 has helical guide surfaces 103 on both sides. When the material falls from the downcomer 101, it can flow along the guide surface 103, so that the material can rotate to a certain extent, which is beneficial to improve the flowability of the material in the communication cavity 133, thereby improving the feeding efficiency.

[0065] Further, with reference to Figure 6The outer periphery of the extension section 113 away from the end of the mounting section 111 has a curved surface 120, and along the axis of the nozzle 110, in the direction from the mounting section 111 to the extension section 113, the outer diameter of the extension section 113 gradually decreases. It can be understood that, since the high-pressure gas flowing at high speed is sprayed at the end of the extension section 113, the low-pressure area is mainly concentrated on the outer peripheral wall of the extension section, and the material flows at high speed on the outer peripheral wall of the extension section. Therefore, the extension section 113 with gradually decreasing outer diameter can effectively increase the space between the outer peripheral wall of the extension section 113 and the discharge pipe 132, thereby facilitating the increase of the volume of the low-pressure area, and can increase the cross-sectional area through which the material can pass, and achieve the improvement of the flow efficiency of the material, thereby improving the feeding efficiency.

[0066] It can be understood that, in actual use, feeding is intermittent, so the fan needs to be restarted when feeding is needed, and the airflow in the nozzle 110 needs to reach a certain flow rate to form a negative pressure area in the communication chamber 133 to realize the extraction of the material. It takes a certain time between the opening of the fan and the feeding, which will cause poor feeding efficiency. Therefore, the starting gas tank 150 is also provided in the embodiment, the starting gas tank 150 is connected to the air inlet pipe 131 through the auxiliary pipe 151, the auxiliary pipe 151 has a valve, the starting gas tank 150 includes a gas storage chamber and a gas pressure sensor, the gas storage chamber can store gas with a preset pressure, and the gas pressure is usually 0.3-0.5 MPa. When the material is extracted, the fan is opened, and at the same time the valve is opened, the gas in the gas storage chamber can be injected into the air inlet pipe 131, which can increase the flow rate of the airflow entering the nozzle 110, thereby improving the starting efficiency and facilitating the improvement of the feeding efficiency.

[0067] In some embodiments, the gas storage chamber is connected to a micro air compressor through a quick-change joint, the gas pressure sensor adopts a built-in MEMS pressure sensor, and the gas is automatically supplemented when the pressure is detected to be lower than the set value, maintaining a dynamic balance of 0.3-0.5 MPa. Further, in the pre-trigger stage, the valve is opened, and 0.5 MPa compressed air enters the air inlet pipe 131 through the auxiliary pipe 151; in the main gas path starting stage, the high-pressure gas in the air inlet pipe 131 is superimposed with the gas flow in the gas storage chamber; in the stable stage, the valve is closed when the pressure in the gas storage chamber decreases to 0.1 MPa, and the micro air compressor is started to supplement the gas pressure in the gas storage chamber.

[0068] It can be understood that in actual use, the material bucket 100 is often arranged outdoors, and the material is easily affected by temperature and humidity. Since the material has oil and sugar, the sugar on the surface of the material is easy to melt when the temperature rises, which can cause the material to adhere to the inner wall of the conveying pipeline or the material bucket 100; when the temperature drops, the oil on the surface of the material is easy to condense, which can cause the material to be caked; when the humidity rises, the material particles are easy to adhere to each other, thereby causing the material to be caked inside. Therefore, the change of temperature and humidity can affect the flowability of the material and easily cause the phenomenon of blockage, which has an adverse effect on the feeding efficiency.

[0069] To solve the above problems, a drying device is arranged in the embodiment, which includes a temperature sensor 146, a humidity sensor 147, a drying machine (not shown in the figure) and an air pipe 141. The temperature sensor 146 and the humidity sensor 147 are installed on the top wall of the containing cavity 108 of the material bucket 100 and can detect the temperature and humidity in the containing cavity 108. The air pipe 141 is pivotally connected to the top wall of the material bucket 100. The drying machine is used to produce dry air, and the air pipe 141 has a plurality of air holes 144.

[0070] Specifically, referring to Figure 7 , the air pipe 141 includes a central pipe 142 pivotally connected to the top of the material bucket 100 and a branch pipe 143 arranged at intervals on the outer periphery of the central pipe 142. The branch pipe 143 has a plurality of air holes 144, the branch pipe 143 is inclined to the central pipe 142, and the branch pipe 143 continuously rises in the direction away from the central pipe 142 along the radial direction of the central pipe 142 to conform to the tapered part of the bottom of the material bucket 100. It can be understood that the top of the material bucket 100 is provided with a rotating motor 145, which can drive the central pipe 142 to rotate, so as to stir the material in the plurality of branch pipes 143 and prevent the material from caking. At the same time, the dry air produced by the drying machine can be injected into the material through the air holes 144, so as to reduce the humidity inside the material and prevent the material from caking or caking, and ensure that the material has good flowability and avoids blockage of the material. It can be understood that the branch pipe 143 is provided with a plurality of air holes 144 along the length direction thereof, and the branch pipe 143 is arranged obliquely. When the dry air is discharged from the air holes 144, it can dry the material at different heights in the containing cavity 108 at the same time, which is beneficial to improve the drying effect.

[0071] It can be understood that the drying machine adopts the principle of a dehumidifier. The drying machine is provided with an evaporator and a condenser. The external air sucked into the drying machine can be condensed by the evaporator to reduce the humidity of the air, so that dry air can be injected into the material bucket 100 to remove excess moisture. At the same time, the air passing through the evaporator will pass through the condenser, so that the temperature of the air rises, avoiding the direct injection of cold air into the containing cavity 108 to cause the material to condense due to too low temperature.

[0072] Further, with reference to Figure 8 , the circulating device is provided with a water pump (not shown in the figure), a water inlet pipe 106 and a water outlet pipe 107, and the hopper 100 is provided with a heat preservation cavity 105 which is arranged around the outer periphery of the containing cavity 108 and has circulating water in the heat preservation cavity 105, and the water inlet pipe 106 and the water outlet pipe 107 are communicated with the heat preservation cavity 105. It can be understood that the water inlet pipe 106 and the water outlet pipe 107 are respectively arranged at the bottom end circumferential wall and the top end circumferential wall of the hopper 100. In a high-temperature environment, the circulating device can inject the circulating water into the heat preservation cavity 105 through the water pump to cool the material and avoid adhesion of the material due to high temperature; in a low-temperature environment, the circulating device can heat the circulating water and inject the circulating water into the heat preservation cavity 105 through the water pump to heat the material and avoid condensation of the material due to low temperature. In addition, the temperature sensor 146 and the humidity sensor 147 detect and feed back the temperature and humidity values in the hopper 100 in real time to ensure that the material can be in a stable temperature and humidity range and has good fluidity, thereby avoiding the blocking phenomenon and improving the feeding efficiency.

[0073] With reference to Figure 9 , according to the embodiment of the second aspect of the application, a control method applied to the feeding system is provided. The control method comprises the following steps:

[0074] First, the temperature value T and the humidity value H in the containing cavity 108 are detected, and then the temperature value T is compared with the first temperature threshold value T0, the temperature value T is compared with the second temperature threshold value T1, and the humidity value H is compared with the humidity threshold value H0, so as to determine the temperature and humidity conditions in the containing cavity 108. It can be understood that in the embodiment, T1=10℃, T2=30℃, 22℃≤T0≤25℃, 50%≤H0≤55%. It can be understood that when the temperature value T is less than the second temperature threshold value T1, the temperature is too low to easily cause the material to condense; when the temperature value T is greater than the second temperature threshold value T2, the material is easily adhered in the containing cavity 108 or the feeding pipe 101, resulting in reduced fluidity; when the humidity value H is greater than the humidity threshold value H0, the material is easily bonded into a group and difficult to flow.

[0075] When T > T0, H > H0, the temperature and humidity in the containing cavity 108 are too high, and the material is prone to stick together. At this time, the circulating device and the drying device are started. The circulating device injects the heat preservation water into the heat preservation cavity 105, and the drying device injects the dry air into the containing cavity 108. It can be understood that, since the temperature value of T0 is lower than the temperature value of pure water at normal temperature and pressure, the circulating device injects the water into the heat preservation cavity 105 through the water pump at this time, so as to reduce the temperature in the containing cavity 108. At the same time, the drying device starts to inject the dry air into the air pipe 141, and the rotating motor 145 is started to rotate the plurality of branch pipes 143, so as to continuously inject the dry air between the material particles while stirring the material, thereby reducing the humidity of the material and effectively reducing the probability of the material sticking together.

[0076] When T > T0, H ≤ H0, the temperature in the containing cavity 108 is too high, but the humidity does not exceed the preset threshold value, and the material is prone to stick to the containing cavity 108 or the discharging pipe 101, resulting in reduced flowability. At this time, the circulating device is started, and the circulating device injects the heat preservation water into the heat preservation cavity 105. Since the temperature value of T0 is lower than the temperature value of pure water at normal temperature and pressure, the circulating device injects the water into the heat preservation cavity 105 through the water pump at this time, so as to reduce the temperature in the containing cavity 108.

[0077] When T1 ≤ T ≤ T0, H > H0, the temperature in the containing cavity 108 is in a moderate range, but the humidity is too high, and the material is prone to stick together. The drying device is started to inject the dry air through the air pipe 141, and the rotating motor 145 is started to rotate the plurality of branch pipes 143, so as to continuously inject the dry air between the material particles while stirring the material, thereby reducing the humidity of the material and effectively reducing the probability of the material sticking together.

[0078] When T < T1, H ≤ H0, the temperature and humidity in the containing cavity 108 are low, and the material is prone to stick together due to the solidification of oil on the surface, and the flowability is poor. Therefore, the circulating device is started, and the circulating device heats the heat preservation water to a preset temperature value T2, so as to increase the temperature in the containing cavity 108, reduce the probability of the material sticking together, and increase the flowability.

[0079] When T < T1, H > H0, the temperature in the accommodating cavity 108 is low and the humidity is high, so the material is easy to condense. Therefore, the circulating device is started, the heat preservation water is heated to the temperature T2 by the circulating device, the temperature in the accommodating cavity 108 is increased, the drying device is started, the dried air is injected through the air pipe 141, and the rotating motor 145 is started to rotate the multiple branch pipes 143, the dried air is continuously injected between the material particles while the material is stirred, so that the humidity of the material is reduced, the probability of the material being bonded into a group is reduced, and the feeding efficiency is improved. The embodiment of the present application is described in detail above in combination with the drawings, but the present application is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A dosing system, characterized in that, include: A material hopper having a receiving cavity for storing materials; A feeding pipe is located at the bottom of the material barrel and communicates with the receiving cavity; A material extraction device includes a fan, an air inlet pipe, and a discharge pipe. The discharge pipe is connected between the air inlet pipe and the discharge pipe, and the discharge pipe, air inlet pipe, and discharge pipe are interconnected in a connecting cavity. A nozzle is provided at the end of the air inlet pipe facing the discharge pipe. The nozzle has a channel with a gradually decreasing inner diameter and extends from the air inlet pipe into the discharge pipe. High-pressure gas generated by the fan passes sequentially through the air inlet pipe, nozzle, and discharge pipe, creating a low-pressure area within the connecting cavity, thereby extracting the material and discharging it from the discharge pipe. An auxiliary hole is provided on the outer periphery of the nozzle, connecting to the air inlet pipe. The auxiliary hole allows high-pressure gas to be discharged, providing an auxiliary airflow on the outer periphery of the nozzle. This auxiliary airflow reduces the resistance of the material moving on the nozzle surface. A drying device and a circulation device are provided. The drying device is equipped with a dryer and an air duct. The air duct is inserted into the receiving cavity and has multiple air vents. The dryer is used to generate dry air and inject it into the receiving cavity through the air vents. The outer periphery of the receiving cavity is provided with a heat preservation cavity, and the outer periphery of the material bucket is provided with a water inlet pipe and a drain pipe. The circulation device can inject heat preservation water into the heat preservation cavity to regulate the temperature of the material in the receiving cavity.

2. A dosing system according to claim 1, characterized in that The nozzle includes an installation section, a conical section, and an extension section. The conical section is located between the installation section and the extension section. The outer periphery of the conical section has a concave conical surface. The outer diameter of the extension section is smaller than the inner diameter of the discharge pipe.

3. A feeding system according to claim 1, wherein The nozzle includes an installation section, a conical section, and an extension section. The outer periphery of the extension section opposite to the end of the installation section has an arc surface. Along the axis of the nozzle, from the installation section to the extension section, the outer diameter of the extension section gradually decreases.

4. The feeding system of claim 1, wherein It also includes a starter gas tank, which is connected to the air inlet pipe. The starter gas tank includes a gas storage chamber and a pressure sensor. The gas storage chamber can store gas at a preset pressure. When pumping material, the gas in the gas storage chamber can be injected into the air inlet pipe to improve the start-up efficiency.

5. The feeding system of claim 1, wherein The end of the feed pipe opposite to the material barrel is provided with a guide plate, and the two sides of the guide plate have spiral guiding surfaces.

6. The feeding system of claim 1, wherein The inner wall of the channel includes a first wall surface and a second wall surface that are arc-shaped and conical, and the first wall surface and the second wall surface are connected to each other.

7. The feeding system of claim 1, wherein The maximum inner diameter of the air inlet pipe is smaller than the minimum inner diameter of the discharge pipe.

8. The feeding system of claim 1, wherein, The air duct includes multiple branch pipes, which are inclined relative to the air duct, and the air vents are provided on both sides of the branch pipes.

9. The feeding system of claim 1, wherein, The drying device also includes a temperature sensor and a humidity sensor, which are installed inside the material barrel and can detect the temperature and humidity in the containment cavity. The air duct is pivotally connected to the top wall of the material barrel.

10. Control method, characterized in that, A feeding system according to any one of claims 1 to 9, the feeding system comprising a circulation device and a drying device, comprising the following steps: detecting a temperature value T and a humidity value H in the accommodating cavity, and comparing the temperature value T with a first temperature threshold value T0, comparing the temperature value T with a second temperature threshold value T1, and comparing the humidity value H with a humidity threshold value H0; when T>T0 and H>H0, starting the circulating device and the drying device, the circulating device injecting the heat preservation water into the heat preservation cavity, and the drying device injecting dry air into the accommodating cavity; when T>T0 and H≤H0, starting the circulating device, the circulating device injecting the heat preservation water into the heat preservation cavity; when T1≤T≤T0 and H>H0, starting the drying device, the drying device injecting dry air into the accommodating cavity; when T when T wherein T1=10℃, T2=30℃, 22℃≤T0≤25℃, and 50%≤H0≤55%.

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