CN111889217A - A uniform feeding device - Google Patents

Abstract

The invention discloses a uniform feeding device, comprising a feeding pipe, a casing, a discharging pipe, a distributor, a driving mechanism and a support plate. A proximity sensor is arranged on the upper part of the inner side wall of the feeding pipe, and a side surface of the casing is provided with a proximity sensor. A support, a pressure sensor is installed at the lower part of the support, the discharge pipe is communicated with the inside of the casing through a plurality of shunt pipes, the feeder includes a pusher arc plate, a bottom plate, an inner sealing ring, and an outer sealing ring, and the drive mechanism includes a deceleration A motor, a bearing assembly, and a transmission shaft are provided. The deceleration motor is installed at the lower part of the inner side of the fixed sleeve, and the deceleration motor is connected and drives the transmission shaft to rotate. The middle part of the transmission shaft is connected with the bearing inner hole of the bearing assembly, the bearing assembly is installed in the fixed sleeve, the top of the transmission shaft is fixedly connected with the distributor and drives the distributor to rotate; the speed of the reduction motor is controlled by the controller, the The support plate is annular, and the vertical support is internally connected with the fixed sleeve and externally connected to the casing. The present invention can not only realize the air locking effect of the material, but also can feed the material uniformly.

Description

A uniform feeding device

technical field

The invention belongs to the field of material conveying equipment, in particular to a uniform feeding device.

Background technique

In the material conveying system, there is often a pressure difference between the input equipment and the output equipment. The serial movement of the gas will affect the operating efficiency of the equipment.

As a typical case, the vertical roller mill is in a negative pressure state during operation, and the belt conveying the material is in the atmosphere. When the material is conveyed to the vertical roller mill, sealing must be considered. If the sealing state is not good, it will cause When the system air leaks, the grinding efficiency of the mill will decrease, and the power consumption of the system circulating fan will increase.

At present, the rotary feeder is widely used in the industry as a device for material conveying and air locking, but because the rotor of the rotary feeder is divided into 6 to 8 parts, the material is divided into multiple strands when falling, and the gap is fed. The incoming material can easily lead to unstable operation of the mill. Therefore, it is an urgent problem to design a uniform feeding device to realize the air lock effect of the material, and to further improve the operation stability of the mill and other equipment through uniform feeding.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is that the sealing state of the existing feeding device is not good, and the uniform feeding cannot be achieved, resulting in unstable operation of the mill and other equipment.

In order to solve the above technical problems, the present invention provides a uniform feeding device, comprising:

The feeding pipe is arranged on the upper part of the casing and is connected to the casing. The material enters the casing through the feeding pipe. The upper part of the inner side wall of the feeding pipe is provided with a proximity sensor, which is connected to the controller.

The shell, the side of the shell is provided with a support, the shell is connected with the supporting bracket through the support, a pressure sensor is installed at the lower part of the support, and the pressure sensor is connected with the controller; a fixed sleeve is installed inside the shell, and the fixed sleeve is connected with the controller. The shell is connected, and the components are fixed,

A discharge pipe, the discharge pipe is located at the bottom of the shell, and the discharge pipe is communicated with the inside of the shell through a plurality of shunt pipes,

The feeder, the feeder is located below the feed pipe, the feeder includes a pusher arc plate, a bottom plate, an inner sealing ring, and an outer sealing ring. There are a plurality of welded or integrally formed pusher arc plates, the center of the upper surface of the bottom plate is provided with a conical protrusion, and a cone is installed on the conical protrusion; the lower part of the distributor is provided with an inner sealing ring and an outer sealing ring, which are fixed The top of the sleeve is inserted between the inner sealing ring and the outer sealing ring,

A drive mechanism, the drive mechanism includes a reduction motor, a bearing assembly, and a transmission shaft, the reduction motor is installed on the lower part of the inner side of the fixed sleeve, the reduction motor is connected and drives the transmission shaft to rotate, and the middle part of the transmission shaft is connected with the bearing inner hole of the bearing assembly , the bearing assembly is installed in the fixed sleeve, the top of the transmission shaft is fixedly connected with the distributor and drives the distributor to rotate; the speed of the deceleration motor is controlled by the controller,

Support plate, the support plate is located below the distributor, the support plate is annular, the inner side of the support plate is fitted with the outer sealing ring of the distributor, the bottom of the support plate is provided with a plurality of evenly arranged vertical supports, the vertical support The fixed sleeve is internally connected to the external housing.

Further, there are two shunt pipes, which are arranged symmetrically along the center of the discharge pipe.

Further, the deceleration motor is a servo motor.

Further, there are four said supports, which are evenly arranged around the casing, and pressure sensors are arranged under the supports.

Further, the deceleration motor is connected with the fixed sleeve through a torsion plate.

Further, the bearing assembly includes an upper bearing cover, a lower bearing cover, a bearing seat, and a conical bearing, the bearing seat is installed in the fixed sleeve through a connecting plate, and the upper bearing cover and the lower bearing cover are installed on the bearing seat through screws. Upper and lower parts; there are two tapered bearings, the outer bearing seat of the tapered bearing is connected to the drive shaft.

Further, a spacer is sleeved between the bearing assembly and the transmission shaft.

Further, a shaft end baffle is installed on the top of the transmission shaft and in the cone, and the shaft end baffle restricts the axial movement of the distributor.

The beneficial effects of the present invention are:

1. The uniform feeding device disclosed in the present invention adopts the pressure sensor arranged on the support to measure the change of the material, and adopts the proximity sensor arranged in the feeding pipe to prevent the pipe from being blocked, which can not only realize the air locking effect of the material, but also can feed the material uniformly;

2. In the present invention, the discharge of the material is evenly distributed on the circumference of the entire material support plate, and the operation of the distributor is relatively stable, so the discharge of the material in the feeding device is very stable, and the stable feeding amount is very important for the mill. Stable operation plays a very good role.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the uniform feeding device of the present invention;

Fig. 2 is the left side cutaway schematic diagram of the uniform feeding device according to the present invention;

Fig. 3 is the front cutaway schematic diagram of the material flow direction of the uniform feeding device according to the present invention;

4 is a schematic perspective view of the uniform feeding device according to the present invention removing the upper part of the casing and the feeder;

Fig. 5 is the three-dimensional enlarged schematic diagram of the distributor and the cone of the uniform feeding device according to the present invention;

6 is a front cross-sectional view of the distributor and the drive shaft of the uniform feeding device according to the present invention;

In the figure: 1. Feeding pipe; 2. Support; 3. Shell; 4. Diverter pipe; 5. Discharge pipe; 6. Material; 7. Geared motor; 8. Vertical support; 9. Distributor; 901, pushing arc plate; 902, bottom plate; 903, inner sealing ring; 904, outer sealing ring; 10, bearing assembly; 11, drive shaft; 12, cone; 13, fixed sleeve; 14, pressure sensor; 15, Support plate; 16. Proximity sensor.

Detailed ways

The specific content of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, a uniform feeding device includes

Feeding pipe 1, the feeding pipe 1 is arranged on the upper part of the casing 3 and communicates with the casing 3, the material 6 enters the casing 3 through the feeding pipe 1, and a proximity sensor 16 is provided on the upper part of the inner wall of the feeding pipe 1 , the proximity sensor 16 is connected to the controller,

As shown in FIG. 3 , the housing 3 is provided with a support 2 on the side of the housing 3 , the housing 3 is connected to the supporting bracket through the support 2 , and a pressure sensor 14 is installed at the lower part of the support 2 , and the pressure sensor 14 is connected to the control A fixing sleeve 13 is installed inside the housing 3, and the fixing sleeve 13 is connected with the housing 3 and fixes each part,

The discharge pipe 5 is located at the bottom of the shell 3, and the discharge pipe 5 is communicated with the interior of the shell 3 through a plurality of shunt pipes 4,

As shown in Figures 5 and 6, the distributor 9 is located below the feed pipe 1, and the distributor 9 includes a pushing arc plate 901, a bottom plate 902, an inner sealing ring 903, and an outer sealing ring 904. The distributor 9 is in the shape of an impeller, the bottom plate 902 is a disc type, and a plurality of welded or integrally formed pushing arc plates 901 are arranged on the bottom plate 902. The center of the upper surface of the bottom plate 902 is provided with a conical protrusion, The cone 12 is installed; the lower part of the distributor 9 is provided with an inner sealing ring 903 and an outer sealing ring 904, and the top of the fixing sleeve 13 is inserted between the inner sealing ring 903 and the outer sealing ring 904,

The drive mechanism includes a reduction motor 7, a bearing assembly 10, and a transmission shaft 11. The reduction motor 7 is installed in the lower part of the inner side of the fixed sleeve 13. The reduction motor 7 is connected to and drives the transmission shaft 11 to rotate. The middle of the transmission shaft 11 It is connected with the bearing inner hole of the bearing assembly 10, the bearing assembly 10 is installed in the fixed sleeve 13, the top of the transmission shaft 11 is fixedly connected with the distributor 9 and drives the distributor 9 to rotate; the speed of the deceleration motor 7 is controlled by the controller,

As shown in FIG. 4 , the support plate 15 is located below the dispenser 9 , the support plate 15 is annular, the inner side of the support plate 15 is attached to the outer sealing ring 904 of the dispenser 9 , and the support plate The bottom of 15 is provided with a plurality of evenly arranged vertical supports 8 , and the vertical supports 8 are internally connected to the fixing sleeve 13 and externally connected to the casing 3 .

In practical applications, there are two shunt pipes 4 , which are arranged symmetrically along the center of the discharge pipe 5 .

In practical applications, the deceleration motor 7 is a servo motor.

As shown in FIG. 4 , in practical application, there are four said supports 2 , which are evenly arranged around the casing 3 , and pressure sensors 14 are arranged under the supports 2 .

In practical applications, the deceleration motor 7 is connected to the fixed sleeve 13 through a torsion plate.

In practical application, the bearing assembly 10 includes an upper bearing cover, a lower bearing cover, a bearing seat, and a conical bearing. The bearing seat is installed in the fixed sleeve 13 through a connecting plate, and the upper bearing cover and the lower bearing cover are connected by screws. Installed on the upper and lower parts of the bearing seat; there are two tapered bearings, the outer bearing seat of the tapered bearing is connected to the drive shaft 11 inside.

In practical application, a spacer is sleeved between the bearing assembly 10 and the transmission shaft 11 .

In practical applications, a shaft end baffle is installed on the top of the transmission shaft 11 and in the cone 12 , and the shaft end baffle restricts the axial movement of the distributor 9 .

Working process and working principle of the present invention:

The material 6 is fed into the shell 3 through the feeding pipe 1, and the material 6 is accumulated on the material 6 support plate 15 of the shell 3. Under the action of gravity, the material 6 is spread on the material 6 support plate 15, and the material 6 is spread out. At the same time, it also accumulates upward. The higher the material 6 is stacked, the larger the spread area until the material 6 is accumulated to the lower opening of the feed pipe 1 and the spread area reaches the maximum. At this time, the spread area of the material 6 is larger than that of the shell 3. The support plate 15 of the material 6 is smaller, the material 6 continues to accumulate in the feeding pipe 1, the weight of the entire feeder continues to increase, and the weight is fed back to the control device through the load cell installed under the support 2 of the shell 3 , when the height of the material 6 reaches the height of the air seal, the corresponding proximity sensor has a corresponding value. At this time, the control device drives the gear motor 7 that drives the distributor 9 with the set speed. Under the action, it moves outward on the material 6 support plate 15 until it is separated from the material 6 support plate 15, and passes through the shell 3, the shunt pipe 4, the discharge port to the lower equipment. When the feeding amount is larger than the preset pushing amount of the feeder 9, the value of the load cell will continue to increase. When it increases to a certain value, the control device will increase the output speed of the deceleration motor 7 and increase the feeding amount of the feeder 9. , when the value of the load cell will continue to decrease and reach the preset value, the control device will reduce the output speed of the deceleration motor 7, reduce the feeding amount of the distributor 9, and so on, so that the feeding amount and the discharging amount achieve a dynamic balance.

To sum up, the present invention can not only achieve the air-locking effect of the material, but also can feed the material uniformly, and the discharge of the material in the feeding device is very stable.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those familiar with the art to understand the content of the present invention and implement it, and not to limit the scope of the present invention. The protection scope, all equivalent changes or modifications made according to the spirit of the present invention shall be covered within the protection scope of the present invention.

Claims (8)

1. a uniform feeding device, characterized in that: comprising A feeding pipe (1), the feeding pipe (1) is arranged on the upper part of the casing (3) and communicates with the casing (3), and the material (6) enters the casing (3) through the feeding pipe (1) ), the upper part of the inner side wall of the feeding pipe (1) is provided with a proximity sensor (16), and the proximity sensor (16) is connected with the controller, A housing (3), a support (2) is provided on the side of the housing (3), the housing (3) is connected to the supported bracket through the support (2), and a pressure sensor ( 14), the pressure sensor (14) is connected with the controller; a fixing sleeve (13) is installed inside the casing (3), the fixing sleeve (13) is connected with the casing (3), and each component is fixed, A discharge pipe (5), the discharge pipe (5) is located at the bottom of the casing (3), and the discharge pipe (5) is communicated with the interior of the casing (3) through a plurality of shunt pipes (4), A feeder (9), the feeder (9) is located below the feed pipe (1), and the feeder (9) includes a pusher arc plate (901), a bottom plate (902), and an inner sealing ring (903) , the outer sealing ring (904), the distributor (9) is impeller-shaped, the bottom plate (902) is disc-shaped, and the bottom plate (902) is provided with a plurality of welded or integrally formed pushing arc plates (901), the bottom plate (902) (902) A conical protrusion is arranged in the center of the upper surface, and a cone (12) is installed on the conical protrusion; the lower part of the distributor (9) is provided with an inner sealing ring (903) and an outer sealing ring (904), The top of the fixing sleeve (13) is inserted between the inner sealing ring (903) and the outer sealing ring (904), A drive mechanism, the drive mechanism comprises a reduction motor (7), a bearing assembly (10), and a transmission shaft (11), the reduction motor (7) is installed on the lower part of the inner side of the fixing sleeve (13), and the reduction motor (7) is connected to The transmission shaft (11) is driven to rotate, and the middle part of the transmission shaft (11) is connected with the bearing inner hole of the bearing assembly (10). The feeder (9) is fixedly connected and drives the feeder (9) to rotate; the speed of the deceleration motor (7) is controlled by the controller, A support plate (15), the support plate (15) is located below the dispenser (9), the support plate (15) is annular, the inner side of the support plate (15) and the outer seal ring of the dispenser (9) (904) Fitting, the bottom of the support plate (15) is provided with a plurality of evenly arranged vertical supports (8), and the vertical supports (8) are internally connected to the fixing sleeve (13) and externally connected to the casing (3). 2 . The uniform feeding device according to claim 1 , wherein there are two shunt pipes ( 4 ), which are arranged symmetrically along the center of the discharge pipe ( 5 ). 3 . 3. A uniform feeding device according to claim 1, characterized in that: the deceleration motor (7) is a servo motor. 4. A uniform feeding device according to claim 1, characterized in that: there are four said supports (2), which are evenly arranged around the casing (3), and a pressure is set under the supports (2). sensor (14). 5. A uniform feeding device according to claim 1 or 3, characterized in that: the deceleration motor (7) is connected to the fixing sleeve (13) through a torsion disc. 6 . The uniform feeding device according to claim 1 , wherein the bearing assembly ( 10 ) comprises an upper bearing cover, a lower bearing cover, a bearing seat, and a conical bearing, and the bearing seat is mounted on a connecting plate through a connecting plate. 7 . In the fixed sleeve (13), the upper bearing cover and the lower bearing cover are installed on the upper and lower parts of the bearing seat by screws; there are two tapered bearings, the outer bearing seat of the tapered bearing is connected to the drive shaft (11). 7. A uniform feeding device according to claim 1 or 6, characterized in that a spacer is sleeved between the bearing assembly (10) and the transmission shaft (11). 8. A uniform feeding device according to claim 1, characterized in that: a shaft end baffle is installed in the top of the drive shaft (11) and in the cone (12), and the shaft end baffle restricts material distribution The axial movement of the device (9).

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