Negative-pressure loading, weighing and feeding all-in-one machine

Abstract

The utility model relates to a negative pressure loading, weighing and feeding all-in-one machine which comprises a stock bin, a material conveying main pipe, a vacuum main pipe and a disc feeder, the upper portion of the stock bin is provided with a material inlet and a negative pressure connector, and the bottom of the stock bin is provided with a material outlet. A discharge hole of the material conveying main pipe is communicated with a material inlet of the stock bin; an air inlet of the vacuum main pipeline is in butt joint with a negative pressure connector of the stock bin. A material receiving disc of the disc feeder is positioned below a material outlet of the stock bin; wherein the vacuum main pipeline is used for vacuumizing the stock bin to form a negative pressure environment; the material conveying main pipe provides rare earth raw materials for the stock bin, and the rare earth raw materials form airflow with materials in a negative pressure environment. Solid materials in the airflow with the materials fall to the bottom of the stock bin in the stock bin, and finally the fixed materials are fed outwards by the disc feeder.

Description

Technical Field

[0001] The utility model relates to the technical field of rare earth processing technology and equipment, and in particular to a negative pressure loading, weighing and feeding integrated machine. Background Art

[0002] Rare earths are important raw materials for the production of semiconductors and new energy vehicles. After the rare earth raw materials are processed into powders, they need to be converted into metals through electrolysis. During the electrolytic processing, the rare earth powders need to be loaded, weighed and accurately fed to the outside in sequence. Currently, these three functions are carried out in a decentralized manner. Therefore, there is an urgent need for a machine that integrates multiple functions such as powder loading, weighing and accurate feeding to the outside. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a negative pressure feeding, weighing and feeding integrated machine, which is used to solve the problem of the current lack of a machine integrating multiple functions such as powder feeding, weighing and external feeding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a negative pressure feeding, weighing and feeding integrated machine, comprising

[0006] A silo, with a material inlet and a negative pressure interface at the top and a material outlet at the bottom, wherein the material inlet, the negative pressure interface and the material outlet are all connected to the interior of the silo;

[0007] A material conveying main pipe, the material outlet of which is connected to the material inlet of the silo;

[0008] A vacuum main pipeline, whose air outlet is used to connect with the vacuum pump, and whose air inlet is connected with the negative pressure interface of the silo;

[0009] A disc feeder, comprising a receiving disc, the receiving disc being located below the material outlet of the silo;

[0010] Wherein, the vacuum main pipeline is used to evacuate the silo to form a negative pressure environment inside the silo;

[0011] The material conveying main pipe provides rare earth raw materials to the silo, and the rare earth raw materials form an airflow mixed with materials under a negative pressure environment;

[0012] The solid materials in the air flow mixed with the materials fall to the bottom of the silo in the silo, are received by the receiving plate of the disc feeder, and are finally fed outward by the disc feeder.

[0013] Furthermore, it also includes a shell and at least one weighing sensor, the silo is arranged in the shell and an annular space is left between the two; the silo is arranged on the shell through the weighing sensor; wherein, each of the weighing sensors is respectively provided with an upper fixing part and a lower fixing part at both ends, the upper fixing part of the weighing sensor is fixed on the shell, and the lower fixing part of the weighing sensor is fixed on the silo.

[0014] Further, when the number of the weighing sensor is one, the single weighing sensor is fixed on the inner wall of the shell, and the silo is arranged on the single weighing sensor in a single-point pressing or pulling manner;

[0015] When the number of the weighing sensors is three, the three weighing sensors are evenly spaced in the annular space between the silo and the shell, and both ends of each weighing sensor are fixedly connected to the silo and the shell respectively;

[0016] When the number of the weighing sensors is four, the four weighing sensors are evenly spaced and arranged in the annular space between the silo and the shell, and two ends of each weighing sensor are fixedly connected to the silo and the shell respectively.

[0017] Furthermore, the air inlet end of the vacuum main pipeline is connected to the vacuum pump, and each set of negative pressure loading, weighing and feeding integrated machine is equipped with a vacuum branch pipeline. The air inlet end of the vacuum branch pipeline is connected to the negative pressure interface of the silo, and the air outlet end of the vacuum branch pipeline is connected to the vacuum main pipeline through a first three-way valve.

[0018] Furthermore, the butt joint between the first three-way valve and the vacuum main pipeline is sealed and connected via a vacuum pipeline clamp or a clamp; the first three-way valve and the vacuum branch pipeline are connected via a first hose.

[0019] Furthermore, the material conveying main pipe is connected to a material conveying branch pipe through a second three-way valve, and the discharge end of each material conveying branch pipe is connected to the material inlet of the corresponding silo.

[0020] Furthermore, it also includes a dust filter and a filter back-blowing cleaning device, the discharge end of the material conveying branch pipe is connected to the material outlet of the silo through the dust filter; the filter back-blowing cleaning device includes an air storage tank, a plurality of pulse valves and a plurality of blow pipes, compressed air is pre-stored in the air storage tank, and a pulse valve is arranged between the air storage tank and each blow pipe; the air storage tank is arranged on the side wall of the top of the silo, and the blow pipe is arranged in the top of the silo; the dust filter is equipped with an exhaust hole, the blow pipe includes a main pipe and a plurality of branch pipes, and the plurality of branch pipes are connected to the main pipe, and the main pipe and the branch pipe are provided with air outlet holes, and the air outlet holes of the blow pipe are respectively opposite to the exhaust holes of the dust filter.

[0021] Preferably, the disc feeder includes a receiving plate, a material diverting mechanism and a discharge pipe, and the discharge pipe is connected to the receiving plate through the material diverting mechanism; the material diverting mechanism is arranged on the receiving plate, and the material diverting mechanism is equipped with a motor; the receiving plate is a flange plate, and the receiving plate is equipped with an O-ring groove, and an O-ring is arranged in the O-ring groove. The receiving plate and the bottom of the silo of the negative pressure loading, weighing and feeding integrated machine are connected by a flange and sealed by an O-ring to achieve a sealed connection between the receiving plate and the silo of the negative pressure loading, weighing and feeding integrated machine.

[0022] Furthermore, a feed pipe rotary joint is provided on the bottom plate of the shell, and the feed pipe rotary joint is connected to the discharge pipe of the disc feeder through a second hose; the feed pipe rotary joint is connected to a feed chute, and a switch valve is provided on the feed chute.

[0023] Furthermore, the disc feeder also includes a fixed chassis, the material-diverting mechanism includes a transmission shaft, a rotating ring and a feeding gear plate, the receiving plate and the fixed chassis cover each other up and down to form a temporary material transport cavity for temporarily loading and transporting materials; a plurality of material-diverting blades are arranged on the rotating ring, and the rotating ring is tightly attached to the receiving plate; a plurality of continuous teeth are circumferentially arranged on the outer edge of the feeding gear plate, and the feeding gear plate is installed in the temporary material transport cavity; the rotating ring, the receiving plate, the feeding gear plate and the fixed chassis are sequentially sleeved on the transmission shaft from top to bottom, and the transmission shaft passes through the fixed chassis and the receiving plate upward in sequence, and the rotating ring and the The feeding gear plates are respectively fixed on the transmission shafts; a feeding port is arranged on the receiving plate, and during the rotation of the rotating ring, the material-moving blades rotate on the receiving plate to sweep the material on the receiving plate into the feeding port; a discharging port is arranged on the fixed chassis, and the discharging port is staggered from the feeding port; the discharging port of the fixed chassis and the feeding port of the receiving plate are at the same distance from the transmission shaft, and the discharging port and the feeding port are both located inside the gap between adjacent teeth of the feeding gear plate; during the rotation of the feeding gear plate, the teeth of the feeding gear plate can sweep the material falling into the gap between adjacent teeth of the feeding gear plate to the discharging port.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] (I) The utility model discloses a negative pressure loading, weighing and feeding integrated machine, comprising a silo, a material conveying main pipe, a vacuum main pipeline and a disc feeder. The upper part of the silo is provided with a material inlet and a negative pressure interface, and the bottom is provided with a material outlet; the discharge port of the material conveying main pipe is connected with the material inlet of the silo; the air inlet of the vacuum main pipeline is connected with the negative pressure interface of the silo, and its air outlet is used to connect with a vacuum pump; the receiving plate of the disc feeder is located below the material outlet of the silo; wherein the vacuum main pipeline is used to evacuate the silo to form a negative pressure environment; the material conveying main pipe provides rare earth raw materials to the silo, and the rare earth raw materials form an airflow with materials in the negative pressure environment; the solid materials in the airflow with materials fall to the bottom of the silo in the silo, and finally the fixed materials are conveyed out by the disc feeder to realize the unloading of the rare earth materials.

[0026] (II) The utility model discloses a negative pressure loading, weighing and feeding integrated machine, which also includes a shell and three weighing sensors. The silo is arranged in the shell and an annular space is left between the two. The three weighing sensors are evenly spaced in the annular space between the silo and the shell, and the two ends of each weighing sensor are fixedly connected to the silo and the shell respectively. The silo is suspended on the shell through the three weighing sensors. When more and more solid materials accumulate in the silo, their weight is collected in real time by the three weighing sensors until the weight of the solid materials in the silo reaches the designed value, and the materials in the silo are weighed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a negative pressure loading, weighing and feeding integrated machine without a shell provided in Example 1 of the utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the negative pressure feeding, weighing and feeding integrated machine provided in Example 1 of the utility model;

[0029] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0030] Figure 4 This is a schematic diagram of a weighing sensor provided in Example 1 of the utility model arranged in the annular space between the silo and the housing;

[0031] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0032] Figure 6 It is a schematic diagram of the external structure of the shell of the negative pressure feeding, weighing and feeding integrated machine provided in Example 1 of the utility model;

[0033] Figure 7 It is a top view of the three-dimensional structure of the disc feeder disclosed in Example 2 of the utility model;

[0034] Figure 8 It is a bottom view of the three-dimensional structure of the disc feeder disclosed in Example 2 of the utility model;

[0035] Fig. 9 It is a top view of the disc feeder disclosed in Example 2 of the utility model;

[0036] Fig.10 It is a bottom view of the three-dimensional structure of the disc feeder disclosed in Example 2 of the utility model after the receiving disc and the material-dispensing blades are removed;

[0037] Fig.11 It is a bottom view of the three-dimensional structure of the disc feeder disclosed in Example 2 of the utility model after the protective cover is removed;

[0038] Fig.12 It is a back view of the disc feeder disclosed in Embodiment 2 of the present utility model;

[0039] Fig.13 yes Fig.12 A schematic diagram of the structure in which the valve plate cover is removed to expose the valve plate;

[0040] Fig.14 It is a longitudinal side view of the disc feeder disclosed in Example 2 of the utility model;

[0041] Fig.15 It is a transverse side view of the disc feeder disclosed in Example 2 of the utility model;

[0042] Fig.16 yes Fig.15 AA section view in.

[0043] Description of reference numerals: 100 - housing, 101 - rectangular frame;

[0044] 1- Silo;

[0045] 10- weighing sensor, 101- upper fixing piece, 102- lower fixing piece;

[0046] 11-Material conveying main pipe, 111-Dust filter, 112-Air storage tank, 113-Pulse valve, 114-Blowing pipe;

[0047] 12- vacuum main pipeline, 120- vacuum branch pipeline, 121- first three-way valve, 122- first hose;

[0048] 13-disc feeder, 14-feeding chute, 15-feeding pipe swivel joint, 16-second hose;

[0049] 17-transmission shaft, 18-top bolt, 19-conical fixing pad;

[0050] 20-rotating ring, 200-dispensing blade; 21-receiving plate, 210-feeding port, 22-feeding gear plate, 23-fixed chassis, 24-discharging pipe, 25-discharging hose;

[0051] 31-valve plate, 32-valve plate cover, 33-cylinder, 34-connecting rod, 35-valve plate shaft, 351-upper sliding bearing, 352-lower sliding bearing;

[0052] 41-motor, 42-main sprocket, 43-chain, 44-secondary sprocket, 45-bearing, 46-motor mounting plate, 471-long hole, 472-motor mounting plate fixing bolt, 481-tensioning screw fixing plate, 482-chain tensioning screw, 49-protective cover;

[0053] 51- floor support leg, 52-O-ring. DETAILED DESCRIPTION

[0054] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0055] In order to solve the problem of the lack of a machine that integrates multiple functions such as powder feeding, weighing and external feeding, first of all, the utility model discloses a negative pressure feeding, weighing and feeding integrated machine, including a silo, a material conveying main pipe, a vacuum main pipeline and a disc feeder. The upper part of the silo is provided with a material inlet and a negative pressure interface, and the bottom is provided with a material outlet; the discharge port of the material conveying main pipe is connected with the material inlet of the silo; the air inlet of the vacuum main pipeline is connected with the negative pressure interface of the silo, and its air outlet is used to connect with a vacuum pump; the receiving plate of the disc feeder is located below the material outlet of the silo; wherein the vacuum main pipeline is used to vacuum the silo to form a negative pressure environment; the material conveying main pipe provides rare earth raw materials to the silo, and the rare earth raw materials form an airflow with materials under the negative pressure environment; the solid materials in the airflow with materials fall to the bottom of the silo in the silo, and finally the fixed materials are conveyed out by the disc feeder to realize the unloading of rare earth materials. Secondly, the utility model discloses a negative pressure loading weighing feeding integrated machine, which also includes a shell and three weighing sensors. The silo is arranged in the shell and an annular space is left between the two. The three weighing sensors are evenly spaced in the annular space between the silo and the shell, and the two ends of each weighing sensor are fixedly connected to the silo and the shell respectively. The silo is suspended on the shell through the three weighing sensors. When more and more solid materials accumulate in the silo, their weight is collected in real time by the three weighing sensors until the weight of the solid materials in the silo reaches the designed value, and the materials in the silo are weighed.

[0056] Example 1: A negative pressure feeding, weighing and feeding integrated machine

[0057] Embodiment 1 of the present utility model provides a negative pressure loading, weighing and feeding integrated machine, which is used to realize the loading, weighing and external feeding of rare earth materials under a negative pressure environment. The structure and connection relationship thereof are described in detail below.

[0058] refer to Figure 1 and Figure 2 The negative pressure loading, weighing and feeding integrated machine comprises a silo 1, a material conveying main pipe 11, a vacuum main pipe 12 and a disc feeder 13.

[0059] The silo 1 is in a straight cylindrical shape, with a material inlet and a negative pressure interface provided at the top and a material outlet provided at the bottom;

[0060] The material outlet of the material conveying main pipe 11 is connected to the material inlet of the silo 1;

[0061] The air outlet of the vacuum main pipeline 12 is used to connect with the vacuum pump, and the air inlet thereof is connected with the negative pressure interface of the silo 1;

[0062] The disc feeder 13 comprises a receiving pan, which is located below the material outlet of the silo 1 .

[0063] The vacuum main pipe 12 is used to evacuate the silo 1 so as to form a negative pressure environment inside the silo 1;

[0064] The material conveying main 11 provides rare earth raw materials to the silo 1, and the rare earth raw materials form an airflow mixed with materials under a negative pressure environment;

[0065] The solid materials in the air flow mixed with the materials fall to the bottom of the silo 1 in the silo 1, and are received by the receiving plate of the disc feeder 13, and finally fed outward by the disc feeder 13 to realize the loading.

[0066] In order to quantitatively weigh the material in the silo 1, refer to Figures 2 to 5 The negative pressure loading, weighing and feeding integrated machine also includes a shell 100 and at least one weighing sensor 10. The silo 1 is arranged in the shell 100 and an annular space is left between the two. The silo 1 is arranged on the inner wall of the shell 100 through the weighing sensor 10.

[0067] Wherein, an upper fixing member 101 and a lower fixing member 102 are respectively disposed at both ends of each weighing sensor 10 . The upper fixing member 101 of the weighing sensor 10 is fixed on the housing 100 , and the lower fixing member 102 of the weighing sensor 10 is fixed on the silo 1 .

[0068] The silo 1 is arranged on the inner wall of the housing 100 through a weighing sensor 10 in a single-point pressure or pull type, a three-point pressure or pull type, or a four-point pressure or pull type.

[0069] A specific implementation is that when the number of the weighing sensor 10 is one, the single weighing sensor 10 is fixed on the inner wall of the housing 100 , and the silo 1 is set on the single weighing sensor 10 in a single-point pressing or pulling manner.

[0070] A specific implementation is that when the number of the weighing sensors 10 is three, the three weighing sensors 10 are evenly spaced in the annular space between the silo 1 and the shell 100, and both ends of each weighing sensor 10 are fixedly connected to the silo 1 and the shell 100 respectively.

[0071] The top ends of the three weighing sensors 10 are respectively suspended on the housing 100 , and the bottom ends of the three weighing sensors 10 are respectively fixed on the outer wall of the silo 1 .

[0072] Continue to refer Figure 4 and Figure 5 Each weighing sensor 10 is respectively provided with an upper fixing member 101 and a lower fixing member 102 at both ends. The upper fixing member 101 of the weighing sensor 10 is fixed on the housing 100 , and the lower fixing member 102 of the weighing sensor 10 is fixed on the silo 1 .

[0073] A specific implementation is that when the number of the weighing sensors 10 is four, the four weighing sensors 10 are evenly spaced in the annular space between the silo 1 and the shell 100, and both ends of each weighing sensor 10 are fixedly connected to the silo 1 and the shell 100 respectively.

[0074] Specifically, the housing 100 includes a rectangular frame 101 and a plate, such as Figure 6 As shown, the rectangular frame 101 is a cubic frame composed of columns and beams, and plates are arranged between the connected columns or beams.

[0075] In order to form a negative pressure environment inside the silo 1, a specific implementation method is that the air inlet end of the vacuum main pipe 12 is connected to the vacuum pump, and each set of negative pressure loading, weighing and feeding integrated machine is equipped with a vacuum branch pipe 120. The air inlet end of the vacuum branch pipe 120 is connected to the negative pressure interface of the silo 1, and the air outlet end of the vacuum branch pipe 120 is connected to the vacuum main pipe 12 through a first three-way valve 121.

[0076] The air inlet end of the vacuum branch pipe 120 serves as the air inlet of the vacuum main pipe 12 , and is connected to the interior of the silo 1 through the negative pressure interface of the silo 1 .

[0077] The air inlet end of the vacuum main pipeline 12 is connected to the vacuum pump in the following two forms: when there is only one set of negative pressure loading, weighing and feeding integrated machine, the air inlet end of the vacuum main pipeline 12 is directly connected to the vacuum pump, and its air outlet end is set as a blind end. When multiple sets of negative pressure loading, weighing and feeding integrated machines are needed, the air inlet end of the first set of negative pressure loading, weighing and feeding integrated machines is directly connected to the vacuum pump, and the air inlet end of the vacuum main pipeline 12 of the second, third, ..., and penultimate set of negative pressure loading, weighing and feeding integrated machines is connected to the air outlet end of the vacuum main pipeline 12 of the adjacent negative pressure loading, weighing and feeding integrated machine, and the air outlet end of the vacuum main pipeline 12 of the last set of negative pressure loading, weighing and feeding integrated machines is set as a blind end.

[0078] Preferably, the joint between the first three-way valve 121 and the vacuum main pipeline 12 is sealed by a hoop or a clamp.

[0079] Preferably, the first three-way valve 121 and the vacuum branch pipe 120 are connected via a first hose 122 .

[0080] As a specific implementation method, the middle part of each material conveying main pipe 11 is connected to a material conveying branch pipe through a second three-way valve, and the discharge end of the material conveying branch pipe is connected to the material inlet of the silo 1. Among them, the feed end of the material conveying main pipe 11 is used to connect with the discharge port of the material of the negative pressure feeding weighing feeding integrated machine, and the other end is set as a blind end or connected with the discharge end of the material conveying main pipe 11 of the next set of negative pressure feeding weighing feeding integrated machine.

[0081] Furthermore, the negative pressure loading, weighing and feeding integrated machine further comprises a dust filter 111, and the discharge end of the material conveying branch pipe is connected to the material outlet of the silo 1 through the dust filter 111. The dust filter 111 is prior art and will not be described in detail here.

[0082] Furthermore, the negative pressure feeding weighing feeding integrated machine also includes a filter back-blowing cleaning device, referring to Figure 2 The filter back-blowing cleaning device includes an air storage tank 112, a plurality of pulse valves 113 and a plurality of blowing pipes 114. Compressed air is pre-stored in the air storage tank 112. A pulse valve 113 is arranged between the air storage tank 112 and each blowing pipe 114.

[0083] The gas storage tank 112 is arranged on the side wall of the top of the silo 1, and the blowing pipe 114 is arranged in the top of the silo 1;

[0084] The dust filter 111 is provided with an exhaust hole, and the blowing pipe 114 includes a main pipe and a plurality of branch pipes connected to the main pipe. The main pipe and the branch pipes are provided with exhaust holes, and the exhaust holes of the blowing pipe 114 are respectively opposite to the exhaust holes of the dust filter 111 .

[0085] Continue to refer Figure 2 , the receiving tray is sealed and connected with the bottom end port of the silo 1. Specifically, the receiving tray is used as the receiving tray of the disc feeder 13, and the receiving tray and the bottom end port of the silo 1 are sealed and connected in the form of a flange and a sealing strip, and the receiving tray is located below the material outlet of the silo 1 and is connected with the inside of the silo 1.

[0086] A specific implementation method is to continue to refer to Figure 2 The disc feeder 13 includes a receiving disc 21, a material shifting mechanism and a discharging pipe 24, and the discharging pipe 24 is connected to the receiving disc 21 through the material shifting mechanism.

[0087] Specifically, the material-dispensing mechanism is arranged on the material-receiving tray 21, and the material-dispensing mechanism is equipped with a motor 41; the material-receiving tray 21 is sealedly docked with the material bin 1 of the negative pressure loading, weighing and feeding integrated machine.

[0088] Furthermore, a feed pipe rotary joint 15 is provided on the bottom plate of the housing 100 , and the feed pipe rotary joint 15 is connected to the discharge pipe 24 of the disc feeder 13 via a second hose 16 .

[0089] In order to draw out the material from the disc feeder 13, the negative pressure feeding weighing feeding integrated machine also includes a discharge chute 14, and the discharge chute 14 is connected to the discharge pipe rotary joint 15, such as Figure 1 Further, in order to control the material discharge, a switch valve is provided on the material discharge chute 14, wherein the switch valve is preferably a lifting switch valve, such as Figure 1 shown.

[0090] Regarding the disc feeder 13, please refer to Example 2 for a more detailed structural form.

[0091] Example 2: A disc feeder

[0092] Embodiment 2 of the present invention provides a disc feeder, and its structure is described in detail below in conjunction with the accompanying drawings.

[0093] refer to Figures 7 to 16 The disc feeder includes a temporary feeding chamber and a transmission shaft 17.

[0094] A rotating ring 20 is provided on the temporary material delivery cavity, and a plurality of material-dispensing blades 200 are provided on the rotating ring 20; a feeding gear plate 22 is installed inside the rotating ring, and a plurality of continuous teeth are provided in a circumferential direction on the outer edge of the feeding gear plate 22;

[0095] The transmission shaft 17 passes through the temporary material delivery cavity upwards in sequence, and the rotating ring 20 and the feeding gear plate 22 are fixed on the transmission shaft 17 respectively;

[0096] A feed port 210 is disposed on the upper side of the temporary delivery cavity, and a discharge port is disposed on the lower side of the temporary delivery cavity, and the discharge port is staggered with the feed port 210;

[0097] During the rotation of the rotating ring 20, the material-moving blade 200 can sweep the material on the temporary material transport cavity into the feed port 210; during the rotation of the feeding gear plate 22, the teeth of the feeding gear plate 22 can sweep the material falling into the gap between adjacent teeth of the feeding gear plate 22 to the discharge port.

[0098] Among them, the receiving plate 21 is a flange plate, the receiving plate 21 is a flange plate, the receiving plate 21 is configured with an O-ring groove, an O-ring 52 is arranged in the O-ring groove, the receiving plate 21 and the bottom of the silo 1 of the negative pressure loading, weighing and feeding integrated machine are connected by a flange and sealed by an O-ring 52 to achieve a sealed connection between the receiving plate 21 and the silo 1 of the negative pressure loading, weighing and feeding integrated machine.

[0099] As a specific implementation, the temporary material transport chamber is formed by a material receiving tray 21 and a fixed bottom plate 23 which are covered from top to bottom, and is used for temporarily loading and transporting materials;

[0100] The rotating ring 20, the receiving plate 21, the feeding gear plate 22 and the fixed base plate 23 are sequentially sleeved on the transmission shaft 17 from top to bottom, and the transmission shaft 17 passes through the fixed base plate 23 and the receiving plate 21 upwards respectively, and the rotating ring 20 and the feeding gear plate 22 are respectively fixed on the transmission shaft 17;

[0101] The receiving tray 21 is provided with a feed port 210, and the rotating ring 20 is closely attached to the receiving tray 21. When the rotating ring 20 rotates, the material-dispensing blade 200 rotates on the receiving tray 21, and can sweep the material on the receiving tray 21 into the feed port 210;

[0102] The fixed chassis 23 is provided with a discharge port, and the discharge port of the fixed chassis 23 and the feed port 210 of the receiving plate 21 are at the same distance from the transmission shaft 17, and the discharge port and the feed port 210 are both located inside the gap between adjacent teeth of the feeding gear plate 22;

[0103] During the rotation of the feeding gear plate 22 , the teeth of the feeding gear plate 22 can sweep the materials falling into the gaps between the adjacent teeth of the feeding gear plate 22 to the discharge port.

[0104] Specifically, the receiving plate 21 is a flange plate, and the receiving plate 21 is equipped with an O-ring groove, in which an O-ring 52 is arranged. The receiving plate 21 is connected to the bottom of the silo 1 of the negative pressure loading, weighing and feeding integrated machine by a flange and is sealed by the O-ring 52 to achieve a sealed connection between the receiving plate 21 and the silo 1 of the negative pressure loading, weighing and feeding integrated machine.

[0105] In order to block the transmission shaft 17 as much as possible to make it look beautiful, further, a top bolt 18 and a conical fixing pad 19 are arranged at the top end of the transmission shaft 17 , and the conical fixing pad 19 is set on the rotating ring 20 through the top bolt 18 .

[0106] In order to control the material output from the discharge port of the fixed chassis 23, the disc feeder also includes a discharge control mechanism, which includes a valve plate 31, a valve plate cover 32, a cylinder 33, a connecting rod 34 and a valve plate shaft 35.

[0107] The valve plate 31 is arranged on the bottom surface of the discharge port of the fixed bottom plate 23;

[0108] The valve plate cover 32 is disposed on the back of the valve plate 31. A discharge pipe 24 is disposed on the back of the valve plate cover 32, and the inlet end of the discharge pipe 24 is directly opposite to the discharge port of the fixed chassis 23.

[0109] The valve plate 31 is provided with a discharge hole, and the valve plate 31 is located between the fixed base plate 23 and the valve plate cover 32, and can move parallel to the fixed base plate 23 between the fixed base plate 23 and the valve plate cover 32;

[0110] The valve plate 31 is fixedly connected with a valve plate shaft 35, and the valve plate shaft 35 is pivotally connected to the piston rod of the cylinder 33 through a connecting rod 34;

[0111] When the cylinder 33 is started, the piston rod of the cylinder 33 pivotally pushes the valve plate shaft 35 to move outward through the connecting rod 34, thereby pushing the valve plate 31 to move until the discharge hole of the valve plate 31 is directly opposite to the discharge port of the fixed chassis 23, and the discharge port of the fixed chassis 23 is connected to the inlet end of the discharge pipe 24.

[0112] Specifically, the cylinder 33 is a two-stage cylinder. Figure 2 and Figure 4 shown.

[0113] Furthermore, an upper sliding bearing 351 and a lower sliding bearing 352 are respectively disposed at both ends of the valve plate shaft 35 .

[0114] Furthermore, a discharge hose 25 is sleeved on the discharge pipe 24 for connecting to the discharge chute.

[0115] In order to provide power to the transmission shaft 17, the disc feeder also includes a transmission mechanism, which includes a motor 41, a main sprocket 42, a chain 43, and a secondary sprocket 44. The main sprocket 42 is arranged on the output shaft of the motor 41, and the secondary sprocket 44 is arranged at the bottom end of the transmission shaft 17. The main sprocket 42 and the secondary sprocket 44 are connected by a chain 43.

[0116] In order to overcome the problem of relative movement between the transmission shaft 17 and the fixed chassis 23 when the transmission shaft 17 passes through the fixed chassis 23 upward, the transmission shaft 17 and the fixed chassis 23 are connected via a bearing 45 .

[0117] In order to facilitate the installation of the motor 41 , a motor mounting plate 46 is provided on the fixed chassis 23 , and the motor 41 is disposed on the motor mounting plate 46 .

[0118] Specifically, the motor 41 is a reduction motor.

[0119] In order to facilitate the control of the length of the chain 43, the motor mounting plate 46 and the fixed chassis 23 are connected in a slidable fixed + screw tensioning manner. First, the motor mounting plate 46 and the fixed chassis 23 are connected together by a plurality of motor mounting plate fixing bolts 472, but there is relative sliding between the two, so that the length can be adjusted. Secondly, the distance between the motor mounting plate 46 and the fixed chassis 23 is adjusted by rotating the chain tensioning screw 48, so as to adjust the center distance between the main sprocket 42 and the secondary sprocket 44, and then adjust the length of the chain 43.

[0120] Specifically, at least two elongated holes 471 are provided on the motor mounting plate 46, and motor mounting plate fixing bolts 472 are respectively arranged in the elongated holes 471 of the motor mounting plate 46. The motor mounting plate 46 and the fixed chassis 23 are connected together by a plurality of motor mounting plate fixing bolts 472, and the motor mounting plate 46 slides in the corresponding elongated holes 471 through the motor mounting plate fixing bolts 472 to realize the movement between the motor mounting plate 46 and the fixed chassis 23; the motor mounting plate 46 is fixed with a tensioning screw fixing plate 481, and a plurality of chain tensioning screw holes are provided on the side wall of the tensioning screw fixing plate 481, and each chain tensioning screw hole is provided with a chain tensioning screw 482, and the plurality of chain tensioning screws 482 are respectively passed through the plurality of chain tensioning screw holes of the tensioning screw fixing plate 481 and pressed against the fixed chassis 23.

[0121] In order to prevent debris from falling onto the chain 43 and causing obstruction to the transmission mechanism, the chain 43 is provided with a protective cover 49 , and the two ends of the protective cover 49 respectively cover the main sprocket 42 and the auxiliary sprocket 44 .

[0122] In order to facilitate standing, the disc feeder is equipped with a plurality of ground legs 51 , preferably three ground legs 51 , which are respectively arranged on the bottom surface of the fixed chassis 23 .

[0123] A disc feeder provided in Example 1 of the present utility model is used in conjunction with a negative pressure loading, weighing and feeding integrated machine to receive materials dropped from the material bin of the negative pressure loading, weighing and feeding integrated machine. In order to ensure that the receiving plate 21 is connected to the material bin 1 of the negative pressure loading, weighing and feeding integrated machine through a flange, the receiving plate 21 is firstly provided with an O-ring groove, and an O-ring 52 is arranged in the O-ring groove. This flange + sealing ring connection form promotes the sealed docking of the receiving plate 21 and the material bin 1 of the negative pressure loading, weighing and feeding integrated machine.

[0124] Example 3: A method for using a negative pressure feeding, weighing and feeding integrated machine

[0125] Embodiment 3 of the present invention provides a method for using a negative pressure feeding, weighing and feeding integrated machine, using the negative pressure feeding, weighing and feeding integrated machine of embodiment 1, wherein before using the negative pressure feeding, weighing and feeding integrated machine, the switch valve on the unloading chute 14 is kept in a closed state, and the method comprises the following steps:

[0126] The vacuum pump is started, and the vacuum main pipe 12 evacuates the silo 1 to form a negative pressure environment inside the silo 1. At the same time, the material conveying main pipe 11 provides rare earth raw materials to the silo 1, and the rare earth raw materials form an airflow with materials in the negative pressure environment;

[0127] The airflow with materials enters from the feeding end of the material conveying main pipe 11 and first enters the silo 1 through the material conveying branch pipe;

[0128] The airflow with materials is first filtered by the dust filter 111, and then the gas in the airflow enters the vacuum main pipe 12, and is finally absorbed by the vacuum pump connected to the vacuum main pipe 12; the solid materials in the airflow fall to the bottom of the silo 1 in the silo 1, until they pass through the material outlet of the silo 1 and enter the receiving plate 21 of the disc feeder 13, and are blocked above the switch valve of the discharge chute 14;

[0129] Solid materials accumulate more and more above the switch valve of the discharge chute 14, the disc feeder 13 and the silo 1, and their weight is collected in real time by three weighing sensors 10 until the weight of the solid materials in the silo 1 reaches the designed value;

[0130] The switch valve on the discharge chute 14 is opened, and the accumulated solid material gradually flows out from the discharge chute 14. At the same time, the motor 41 of the disc feeder 13 is started, and the material in the silo 1 enters the receiving plate of the disc feeder 13 from the material outlet of the silo 1. The disc feeder 13 continuously transports the fixed material out to realize the discharge of rare earth materials until all the solid materials in the silo 1 are emptied.

[0131] When the dust filter 111 needs to be cleaned, the pulse valve 113 of the filter back-blowing cleaning device is opened, and the compressed air in the air storage tank 112 passes through the air outlet of the blowing pipe 114 and blows toward the air suction hole of the dust filter 111, so that the dust adsorbed in the dust filter 111 falls to the bottom of the silo 1.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A negative pressure feeding, weighing and feeding integrated machine, characterized in that: include A silo (1) having a material inlet and a negative pressure interface at its top and a material outlet at its bottom, wherein the material inlet, the negative pressure interface and the material outlet are all connected to the interior of the silo (1); A material conveying main pipe (11), the material outlet of which is connected to the material inlet of the silo (1); A vacuum main pipeline (12), whose air outlet is used to connect with a vacuum pump, and whose air inlet is connected with a negative pressure interface of the silo (1); A disc feeder (13) comprising a receiving disc (21), wherein the receiving disc (21) is located below the material outlet of the silo (1); The vacuum main pipe (12) is used to evacuate the silo (1) so as to form a negative pressure environment inside the silo (1); The material conveying main pipe (11) provides the silo (1) with rare earth raw materials, and the rare earth raw materials form an airflow mixed with materials under a negative pressure environment; Solid materials in the air flow mixed with materials fall in the silo (1) to the bottom of the silo (1), are received by the receiving plate of the disc feeder (13), and are finally fed outward by the disc feeder (13).

2. The negative pressure feeding, weighing and feeding integrated machine according to claim 1, characterized in that: It also includes a housing (100) and at least one weighing sensor (10). The silo (1) is arranged in the housing (100) and an annular space is left between the two; The silo (1) is arranged on the housing (100) via the weighing sensor (10); Wherein, each of the weighing sensors (10) is respectively provided with an upper fixing part (101) and a lower fixing part (102) at both ends; the upper fixing part (101) of the weighing sensor (10) is fixed on the housing (100), and the lower fixing part (102) of the weighing sensor (10) is fixed on the silo (1).

3. The negative pressure feeding, weighing and feeding integrated machine according to claim 2, characterized in that: When the number of the weighing sensor (10) is one, the single weighing sensor (10) is fixed on the inner wall of the housing (100), and the silo (1) is arranged on the single weighing sensor (10) in a single-point pressing or pulling manner; When the number of the weighing sensors (10) is three, the three weighing sensors (10) are evenly spaced and arranged in the annular space between the silo (1) and the housing (100), and two ends of each weighing sensor (10) are fixedly connected to the silo (1) and the housing (100), respectively; When the number of the weighing sensors (10) is four, the four weighing sensors (10) are evenly spaced and arranged in the annular space between the silo (1) and the shell (100), and the two ends of each weighing sensor (10) are fixedly connected to the silo (1) and the shell (100), respectively.

4. The negative pressure feeding, weighing and feeding integrated machine according to claim 1, characterized in that: The air inlet end of the vacuum main pipeline (12) is connected to the vacuum pump, and each set of negative pressure loading, weighing and feeding integrated machine is equipped with a vacuum branch pipeline (120). The air inlet end of the vacuum branch pipe (120) is connected to the negative pressure interface of the silo (1), and the air outlet end of the vacuum branch pipe (120) is connected to the vacuum main pipe (12) via a first three-way valve (121).

5. The negative pressure feeding, weighing and feeding integrated machine according to claim 4, characterized in that: The butt joint between the first three-way valve (121) and the vacuum main pipeline (12) is sealed and connected via a vacuum pipeline hoop or clamp; The first three-way valve (121) and the vacuum branch pipe (120) are connected via a first hose (122).

6. The negative pressure feeding, weighing and feeding integrated machine according to claim 1, characterized in that: The material conveying main pipe (11) is connected to a material conveying branch pipe via a second three-way valve, and the discharge end of each material conveying branch pipe is connected to the material inlet of the corresponding silo (1).

7. The negative pressure feeding, weighing and feeding integrated machine according to claim 1, characterized in that: It also includes a dust filter (111) and a filter back-blowing cleaning device. The material discharge end of the material conveying branch pipe is connected to the material outlet of the silo (1) via a dust filter (111); The filter back-blowing dust cleaning device comprises an air storage tank (112), a plurality of pulse valves (113) and a plurality of blowing pipes (114); compressed air is pre-stored in the air storage tank (112); a pulse valve (113) is arranged between the air storage tank (112) and each blowing pipe (114); The gas storage tank (112) is arranged on the side wall of the top of the silo (1), and the blowing pipe (114) is arranged inside the top of the silo (1); The dust filter (111) is provided with an air extraction hole, the blowing pipe (114) comprises a main pipe and a plurality of branch pipes, the plurality of branch pipes are respectively connected to the main pipe, the main pipe and the branch pipes are provided with air outlet holes, and the air outlet holes of the blowing pipe (114) are respectively opposite to the air extraction holes of the dust filter (111).

8. The negative pressure feeding, weighing and feeding integrated machine according to claim 2, characterized in that: The disc feeder (13) comprises a material receiving disc (21), a material shifting mechanism and a material discharging pipe (24), wherein the material discharging pipe (24) is connected to the material receiving disc (21) via the material shifting mechanism; The material shifting mechanism is arranged on the material receiving plate (21), and the material shifting mechanism is equipped with a motor (41); The receiving plate (21) is a flange plate, and the receiving plate (21) is provided with an O-ring groove, in which an O-ring (52) is arranged. The receiving plate (21) is connected to the bottom of the material bin (1) of the negative pressure loading, weighing and feeding integrated machine by a flange and is sealed by the O-ring (52), so as to achieve sealed docking between the receiving plate (21) and the material bin (1) of the negative pressure loading, weighing and feeding integrated machine.

9. The negative pressure feeding, weighing and feeding integrated machine according to claim 8, characterized in that: A feeding pipe rotary joint (15) is provided on the bottom plate of the housing (100), and the feeding pipe rotary joint (15) is connected to a feeding pipe (24) of the disc feeder (13) via a second hose (16); The material discharge pipe rotary joint (15) is connected to a material discharge chute (14), and a switch valve is arranged on the material discharge chute (14).

10. The negative pressure feeding, weighing and feeding integrated machine according to claim 8, characterized in that: The disc feeder also includes a fixed chassis (23), and the material feeding mechanism includes a transmission shaft (17), a rotating ring (20) and a feeding gear disc (22). The receiving tray (21) and the fixed bottom tray (23) are overlapped to form a temporary material transport cavity for temporarily loading and transporting materials; A plurality of material-dispensing blades (200) are arranged on the rotating ring (20), and the rotating ring (20) is closely attached to the material receiving plate (21); The outer edge of the feeding gear disc (22) is provided with a plurality of continuous teeth in a circumferential direction, and the feeding gear disc (22) is installed in the temporary transport cavity; The rotating ring (20), the receiving plate (21), the feeding gear plate (22) and the fixed base plate (23) are sequentially sleeved on the transmission shaft (17) from top to bottom, and the transmission shaft (17) passes through the fixed base plate (23) and the receiving plate (21) upwards respectively, and the rotating ring (20) and the feeding gear plate (22) are respectively fixed on the transmission shaft (17); The receiving plate (21) is provided with a feeding port (210), and when the rotating ring (20) rotates, the material-discharging blade (200) rotates on the receiving plate (21) to sweep the material on the receiving plate (21) into the feeding port (210); The fixed chassis (23) is provided with a discharge port, and the discharge port is staggered from the feed port (210); the discharge port of the fixed chassis (23) and the feed port (210) of the receiving plate (21) are equidistant from the transmission shaft (17), and the discharge port and the feed port (210) are both located inside the gap between adjacent teeth of the feeding gear plate (22); During the rotation of the feeding gear plate (22), the teeth of the feeding gear plate (22) can sweep the material falling into the gap between adjacent teeth of the feeding gear plate (22) to the discharge port.

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