Feeding control device of pneumatic conveying system

Abstract

The utility model relates to the technical field of feeding control devices, in particular to a feeding control device of a pneumatic conveying system. In order to solve the problem that when a control device of a pneumatic conveying system faces a long pipeline, a good dredging effect is difficult to achieve, according to the technical scheme, the device comprises a hollow sending tank, the top of the sending tank is connected with a feeding hopper through a conveying pipe, an air inlet pipe is arranged on one side of the sending tank, and an air outlet pipe is arranged on the other side of the sending tank; a discharging pipe is arranged on the side, away from the air inlet pipe, of the sending tank, and the air inlet pipe and the discharging pipe both communicate with the sending tank. The sealing mechanism is arranged on the feeding hopper and used for sealing the top of the feeding hopper to form a vacuum environment; and the abdicating assembly is fixedly arranged and is used for driving the sealing mechanism to abdicate during feeding. Powder is conveyed in a differential pressure mode, it is guaranteed that the powder cannot be blocked when passing through a long pipeline, and the feeding amount is easy to control.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding control devices, in particular to a feeding control device for a pneumatic conveying system. Background Technique

[0002] The ternary cathode material is small-particle powder, which needs to be calcined and pulverized multiple times. A pneumatic conveying system is used to transfer materials between processes. The usual control method of the pneumatic conveying system is to control the feeding amount by controlling the opening time of the feeding valve. Due to the different material characteristics after calcination and pulverization, this qualitative feeding method cannot guarantee the actual feeding amount, and it is easy to cause material blockage. The pneumatic conveying system uses gas as the power. Due to reasons such as production rhythm and upstream equipment failure, the pneumatic conveying is in an idle running state, resulting in waste of gas source. An existing control device for a pneumatic conveying system of powdery materials uses a dredging head to dredge the blocked materials by its own spiral shape. When facing a long pipeline, it is difficult to achieve a good dredging effect. In view of this, the utility model proposes a feeding control device for a pneumatic conveying system. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problem that the control device of the pneumatic conveying system is difficult to achieve a good dredging effect when facing a long pipeline in the background technique, and propose a feeding control device for a pneumatic conveying system.

[0004] The technical solution of the utility model: A feeding control device for a pneumatic conveying system includes a sending tank provided with a hollow interior. The top of the sending tank is connected with a feeding hopper through a feeding pipe. An air inlet pipe is arranged on one side of the sending tank, and a discharge pipe is arranged on the side of the sending tank away from the air inlet pipe. Both the air inlet pipe and the discharge pipe are communicated with the sending tank; a sealing mechanism arranged on the feeding hopper, the sealing mechanism is used to seal the top of the feeding hopper to form a vacuum environment; a fixed displacement component, the displacement component is used to drive the sealing mechanism to make a displacement during feeding; a pressure difference generating mechanism arranged between the sending tank and the feeding hopper, the pressure difference generating mechanism is used to adjust the pressure difference between the sending tank and the feeding hopper.

[0005] Optionally, the sealing mechanism includes a gland arranged on the top of the feeding hopper, a rubber ring is installed in the gland, and the rubber ring has the same diameter as the feeding hopper.

[0006] Optionally, a plurality of connecting plates are fixedly connected to the top of the gland, and a lifting plate is fixedly connected to the top of the plurality of connecting plates. The lifting plate is arranged on one side of the feeding hopper, and a first push rod motor is arranged above the lifting plate. The output end of the first push rod motor is fixedly connected to the lifting plate.

[0007] Optionally, a plurality of groups of limiting rods are fixedly connected to the top of the lifting plate, and limiting sleeves are slidably connected to the limiting rods.

[0008] Optionally, the yielding component includes a fixedly installed fixed plate, which is L-shaped, and a second push rod motor is installed on one side of the fixed plate. The output end of the second push rod motor passes through the fixed plate and is fixedly connected to a movable plate, which is L-shaped, and the first push rod motor and the limit sleeve are both installed on the side of the movable plate.

[0009] Optionally, a plurality of groups of sliding blocks are installed on a side of the movable plate away from the first push rod motor, wherein the sliding blocks are slidably connected with sliding rails, and the sliding rails are fixedly connected to the side of the fixed plate.

[0010] Optionally, the pressure difference generating mechanism includes an exhaust pipe connected to the side of the sending tank, a fourth solenoid valve is installed on the exhaust pipe, an outlet pipe is connected to the side of the feed hopper, a fifth solenoid valve is installed on the outlet pipe, and a vacuum machine is installed between the exhaust pipe and the outlet pipe.

[0011] Optionally, a third solenoid valve is installed on the feed pipe.

[0012] Optionally, a first solenoid valve is installed on the air inlet pipe, and a second solenoid valve is installed on the discharge pipe.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] The utility model sets a yielding component, after quantitatively adding materials into the feed hopper, the second push rod motor can drive the pressure cover to move to the top of the feed hopper after starting, and the pressure cover is pressed on the top of the feed hopper through the setting of the first push rod motor. Through the setting of the first solenoid valve, the second solenoid valve and the third solenoid valve, when the vacuum machine is started after closing, the pressure in the feed hopper can be increased and the pressure in the sending tank can be reduced, so that the powder material can enter the sending tank after the third solenoid valve is opened;

[0015] Furthermore, a good sealing environment in the feed hopper is ensured by setting a sealing mechanism, and at the same time, the making way component can move the pressure cover to make way when adding materials to the feed hopper, ensuring that powder can be added to the feed hopper accurately;

[0016] In summary, the utility model conveys powder by means of pressure difference, thereby ensuring that the powder will not be blocked when passing through a longer pipeline, and the feed amount is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a feeding control device for a pneumatic conveying system is given;

[0018] Figure 2 forFigure 1 The enlarged schematic diagram of point A in the middle;

[0019] Figure 3 It is a schematic diagram of the structure of the sending tank;

[0020] Figure 4 for Figure 3 Schematic top view of .

[0021] Reference numerals:

[0022] 1. Sending tank; 11. Air inlet pipe; 12. Discharge pipe; 13. First solenoid valve; 14. Second solenoid valve;

[0023] 2. Material delivery pipe; 21. The third solenoid valve;

[0024] 3. Feed hopper;

[0025] 4. Sealing mechanism; 41. Gland; 42. Rubber ring; 43. Connecting plate; 44. Lifting plate; 45. First push rod motor; 46. Limit rod; 47. Limit sleeve;

[0026] 5. yield assembly; 51. fixed plate; 52. second push rod motor; 53. moving plate; 54. slider; 55. slide rail;

[0027] 6. Pressure difference generating mechanism; 61. Air extraction pipe; 62. Fourth solenoid valve; 63. Air outlet pipe; 64. Fifth solenoid valve; 65. Vacuum machine. DETAILED DESCRIPTION

[0028] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", "fourth", "fifth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] Embodiment

[0034] As Figure 1 shown, a feeding control device for a pneumatic conveying system proposed by the present utility model includes a sending tank 1 provided with a hollow structure. An air inlet pipe 11 is arranged on one side of the sending tank 1, and a discharge pipe 12 is arranged on the side of the sending tank 1 away from the air inlet pipe 11. Both the air inlet pipe 11 and the discharge pipe 12 are communicated with the sending tank 1. The air inlet pipe 11 is used for air to enter the sending tank 1, and the discharge pipe 12 is used for the powder in the sending tank 1 to be discharged following the air flow. The top of the sending tank 1 is connected with a feeding hopper 3 through a feeding pipe 2, and the feeding hopper 3 is used for loading a fixed amount of powder. A third solenoid valve 21 is installed on the feeding pipe 2 to separate the sending tank 1 from the feeding hopper 3, so that a fixed amount of powder is discharged each time. A first solenoid valve 13 is installed on the air inlet pipe 11, and a second solenoid valve 14 is installed on the discharge pipe 12 to form a sealed environment in the sending tank 1 after the first solenoid valve 13, the first solenoid valve 13 (should be the first solenoid valve 13 and the second solenoid valve 14 here) and the third solenoid valve 21 are closed.

[0035] Furthermore, please refer to Figure 2 and Figure 3The control device includes a sealing mechanism 4 arranged on the feed hopper 3, and the sealing mechanism 4 is used to seal the top of the feed hopper 3 to form a vacuum environment. The sealing mechanism 4 includes a gland 41 arranged on the top of the feed hopper 3, and a rubber ring 42 is installed in the gland 41. The rubber ring 42 has the same diameter as the feed hopper 3 and is used to increase the sealing performance. Two groups of connecting plates 43 are fixedly connected to the top of the gland 41, and a lifting plate 44 is fixedly connected to the top of the two groups of connecting plates 43. The lifting plate 44 drives the gland 41 to move synchronously through the connecting plate 43. The lifting plate 44 is arranged on one side of the feed hopper 3, and a first push rod motor 45 is arranged above the lifting plate 44. The output end of the first push rod motor 45 is fixedly connected to the lifting plate 44. After starting, the first push rod motor 45 drives the lifting plate 44 to move, so that the gland 41 can be pressed on the top of the feed hopper 3 to achieve sealing. Two groups of limiting rods 46 are fixedly connected to the top of the lifting plate 44 , and limiting sleeves 47 are slidably connected to the limiting rods 46 for limiting the position of the lifting plate 44 when it moves, so that the lifting plate 44 moves smoothly.

[0036] Furthermore, Figure 4 As shown, the control device also includes a fixedly arranged yielding assembly 5, which is used to drive the sealing mechanism 4 to yield when feeding. The yielding assembly 5 includes a fixedly installed fixed plate 51, which is installed on the frame for fixing. The fixed plate 51 is L-shaped, and a second push rod motor 52 is installed on one side of the fixed plate 51. The output end of the second push rod motor 52 passes through the fixed plate 51 and is fixedly connected to a moving plate 53. After the second push rod motor 52 is started, it drives the moving plate 53 to move. The moving plate 53 is L-shaped, and the first push rod motor 45 and the limiting sleeve 47 are both installed on the side of the moving plate 53. When the moving plate 53 moves, it drives the first push rod motor 45 and the limiting sleeve 47 to move synchronously, thereby driving the sealing mechanism 4 to move as a whole, and is used to move the position of the sealing mechanism 4 to yield when feeding into the feed hopper 3. A plurality of sets of sliders 54 are installed on the side of the movable plate 53 away from the first push rod motor 45. The sliders 54 are slidably connected with slide rails 55. The slide rails 55 are fixedly connected to the side of the fixed plate 51 for limiting the movable plate 53 when it moves, so that the movable plate 53 moves smoothly.

[0037] Finally, the above control device further includes a differential pressure generating mechanism 6 disposed between the sending tank 1 and the feed hopper 3. The differential pressure generating mechanism 6 is used to adjust the pressure difference between the sending tank 1 and the feed hopper 3. The differential pressure generating mechanism 6 includes an air extraction pipe 61 connected to the side of the sending tank 1. A fourth solenoid valve 62 is installed on the air extraction pipe 61. An air outlet pipe 63 is connected to the side of the feed hopper 3. A fifth solenoid valve 64 is installed on the air outlet pipe 63. A vacuum machine 65 is installed between the air extraction pipe 61 and the air outlet pipe 63. Filter nets are provided in both the air extraction pipe 61 and the air outlet pipe 63 to prevent dust from entering the vacuum machine 65. After the vacuum machine 65 is started, the air in the sending tank 1 is pumped into the feed hopper 3, so that the pressure in the feed hopper 3 is much greater than the pressure in the sending tank 1. And after the fourth solenoid valve 62 and the fifth solenoid valve 64 are closed, the third solenoid valve 21 is opened, which facilitates the rapid passage of the powder in the feed hopper 3 into the sending tank 1 through the feed hopper 3 without clogging.

[0038] In this embodiment, the ternary cathode material is loaded into the sagger according to a certain weight for roasting. After roasting is completed, the powder is poured into the feed hopper 3 by the sagger tipping mechanism of the rotary conveyor line. After a certain amount of powder is loaded into the feed hopper 3, the second push rod motor 52 is started to drive the moving plate 53 to move smoothly under the limiting action of the slider 54 and the slide rail 55, and at the same time drive the pressing cover 41 to move above the feed hopper 3. Then the first push rod motor 45 is started to drive the lifting plate 44 to move downward under the limiting action of the limiting rod 46 and the limiting sleeve 47. The lifting plate 44 drives the pressing cover 41 to move downward through the connecting plate 43. At this time, the pressing cover 41 presses on the top of the feed hopper 3. At this time, the first solenoid valve 13, the second solenoid valve 14 and the third solenoid valve 21 are closed, and the vacuum machine 65 is started to suck the air in the sending tank 1 into the feed hopper 3, so that the pressure in the feed hopper 3 increases and the pressure in the sending tank 1 decreases. Then the fourth solenoid valve 62 and the fifth solenoid valve 64 are closed, and then the third solenoid valve 21 is opened. Due to the pressure difference between the feed hopper 3 and the sending tank 1, an air flow will be generated to drive the powder in the feed hopper 3 into the sending tank 1, and at the same time prevent the powder from clogging. Then the third solenoid valve 21 is closed and the first solenoid valve 13 and the second solenoid valve 14 are opened. An air flow is sent into the sending tank 1 through the air inlet pipe 11, and at the same time drives the powder to be discharged through the discharge pipe 12.

[0039] The above specific embodiments are merely an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A feeding control device for a pneumatic conveying system, characterized in that Including: A sending tank (1) with a hollow setting. The top of the sending tank (1) is connected to a feed hopper (3) through a feeding pipe (2). One side of the sending tank (1) is provided with an air inlet pipe (11). The side of the sending tank (1) far from the air inlet pipe (11) is provided with a discharge pipe (12). Both the air inlet pipe (11) and the discharge pipe (12) are communicated with the sending tank (1). A sealing mechanism (4) arranged on the feed hopper (3). The sealing mechanism (4) is used to seal the top of the feed hopper (3) to form a vacuum environment. A fixed displacement component (5). The displacement component (5) is used to drive the sealing mechanism (4) to make way during feeding. A pressure difference generating mechanism (6) arranged between the sending tank (1) and the feed hopper (3). The pressure difference generating mechanism (6) is used to adjust the pressure difference between the sending tank (1) and the feed hopper (3).

2. The feeding control device of a pneumatic conveying system according to claim 1, characterized in that, The sealing mechanism (4) includes a gland (41) arranged on the top of the feed hopper (3). A rubber ring (42) is installed in the gland (41). The rubber ring (42) has the same diameter as the feed hopper (3).

3. The feeding control device of a pneumatic conveying system according to claim 2, characterized in that, The top of the gland (41) is fixedly connected with multiple groups of connecting plates (43). The tops of the multiple groups of connecting plates (43) are jointly fixedly connected with a lifting plate (44). The lifting plate (44) is arranged on one side of the feed hopper (3). Above the lifting plate (44), a first push rod motor (45) is provided. The output end of the first push rod motor (45) is fixedly connected with the lifting plate (44).

4. The feeding control device of a pneumatic conveying system according to claim 3, characterized in that The top of the lifting plate (44) is fixedly connected with multiple groups of limiting rods (46). A limiting sleeve (47) is slidably connected to the limiting rods (46).

5. The feeding control device of a pneumatic conveying system according to claim 4, characterized in that, The displacement component (5) includes a fixedly installed fixing plate (51). The fixing plate (51) is L-shaped. A second push rod motor (52) is installed on one side of the fixing plate (51). The output end of the second push rod motor (52) penetrates through the fixing plate (51) and is fixedly connected with a moving plate (53). The moving plate (53) is L-shaped. Both the first push rod motor (45) and the limiting sleeve (47) are installed on the side surface of the moving plate (53).

6. The feeding control device of a pneumatic conveying system according to claim 5, characterized in that, Multiple groups of sliders (54) are installed on the side of the moving plate (53) far from the first push rod motor (45). A slide rail (55) is slidably connected in the sliders (54). The slide rail (55) is fixedly connected to the side surface of the fixing plate (51).

7. The feeding control device of a pneumatic conveying system according to claim 1, characterized in that The pressure difference generating mechanism (6) includes an air extraction pipe (61) connected to the side of the sending tank (1). A fourth solenoid valve (62) is installed on the air extraction pipe (61). An air outlet pipe (63) is connected to the side of the feed hopper (3). A fifth solenoid valve (64) is installed on the air outlet pipe (63). A vacuum machine (65) is installed between the air extraction pipe (61) and the air outlet pipe (63).

8. The feeding control device of a pneumatic conveying system according to claim 1, characterized in that A third solenoid valve (21) is installed on the feeding pipe (2).

9. The feeding control device of a pneumatic conveying system according to claim 1, characterized in that, A first solenoid valve (13) is installed on the air inlet pipe (11). A second solenoid valve (14) is installed on the discharge pipe (12).

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