Anti-adhesion spherical cement powder quantitative feeding device

Abstract

This application relates to the field of cement production technology and discloses an anti-adhesion spherical cement powder quantitative feeding device. By incorporating a sliding device, and through the coordinated arrangement of multiple components including a negative pressure fan, dust cover, air collection chamber, first air duct, and second air duct, a relatively stable semi-sealed area can be formed at the feeding pipe. This allows the negative pressure fan to generate stable negative pressure at this location, guiding the airflow in this area and blowing it towards the storage trough located above. This directional airflow effectively shovels and cleans the inside of the storage trough, forcibly blowing off damp material adhering to the trough walls and corners, ensuring that the storage trough is thoroughly emptied each time it is rotated to the feeding station. This fundamentally solves the problem of incomplete feeding caused by material adhesion, greatly improving the accuracy and reliability of quantitative feeding.

Description

Technical Field

[0001] This application relates to the field of cement production technology, specifically to an anti-adhesion spherical cement powder quantitative feeding device. Background Technology

[0002] Rotary trough-type quantitative feeding machines are widely used in spherical cement production. These machines typically consist of a housing, a drive motor, and a tilting shaft. The housing contains a chamber, and the tilting shaft is horizontally positioned within this chamber and rotated by the drive motor. Multiple storage troughs are spaced circumferentially along the tilting shaft. During operation, material is fed into the housing through the inlet at the top. As the tilting shaft rotates, when the storage trough reaches the upper position, material falls in and fills it. When the trough reaches the lower position, the material falls under gravity into a discharge pipe connected to the bottom of the housing, and is finally discharged. By controlling the speed of the drive motor, the amount of material discharged per unit time can be adjusted, thus achieving quantitative or constant-speed feeding.

[0003] However, this feeding method has a significant drawback in practical applications: when handling damp, easily absorbent, or sticky powdery raw materials (such as damp spherical cement powder), the material often cannot completely detach from the storage tank due to its own gravity. Some material adheres to the tank walls or corners and then rotates upwards again. This not only causes inaccurate feeding and compromises the precision of quantitative control, but the long-term accumulation of adhering material also reduces the effective storage volume and may even harden into lumps, affecting the normal operation of the equipment and requiring shutdown for manual cleaning, thus reducing production efficiency. Utility Model Content

[0004] In view of the above problems, this application provides an anti-adhesion spherical cement powder quantitative feeding device, which can effectively solve the problem of material adhesion in the storage tank and ensure accurate and thorough feeding.

[0005] According to one aspect of the embodiments of this application, an anti-adhesion spherical cement powder quantitative feeding device is provided. The anti-adhesion spherical cement powder quantitative feeding device includes a housing, a drive motor, and a negative pressure fan. The housing has an internal chamber with a horizontally rotatable tilting shaft inside. One end of the tilting shaft is connected to the drive motor. Multiple storage troughs are spaced circumferentially along the tilting shaft. The top of the housing has a feeding port communicating with the chamber, and the bottom of the housing has a feeding pipe communicating with the chamber. A dust cover is fitted around the outer circumference of the feeding pipe, and the top of the dust cover is sealed to the bottom of the housing. An annular air collection chamber is formed between the inner wall of the dust cover and the outer wall of the feeding pipe. The inlet of the negative pressure fan communicates with the air collection chamber through a first air duct, and the outlet of the negative pressure fan extends into the chamber of the housing through a second air duct. The outlet of the second air duct faces the storage trough located above the feeding pipe, and is used to blow airflow towards the storage trough to assist in the material falling out.

[0006] In some embodiments, the number of storage tanks is four, six, or eight.

[0007] In some embodiments, the end of the second air duct is connected to a plurality of branch air blowing pipes via a distribution plate. The branch air blowing pipes extend into the cavity of the housing and their air outlets are positioned toward the storage tank located above the discharge pipe.

[0008] In some embodiments, a nozzle is provided at the air outlet of the second duct, the nozzle being used to constrict and accelerate the airflow.

[0009] In some embodiments, the dust cover has a bottom opening, and its bottom edge extends downward and beyond the bottom end of the feed tube.

[0010] In some embodiments, a resilient curtain is provided at the bottom opening of the dust cover.

[0011] In some embodiments, the elastic curtain includes four engineering plastic flaps, one end of which is fixed to the edge of the bottom opening of the dust cover, and the other end extends toward the center of the dust cover and hangs down freely, forming a cross-shaped channel between the multiple engineering plastic flaps.

[0012] The beneficial effects of this application are: 1. This application utilizes a negative pressure fan to guide airflow from the discharge pipe towards the storage tank located above it. This directional airflow effectively shovels and cleans the inside of the storage tank, forcibly blowing off damp material adhering to the tank walls and corners, ensuring that the storage tank is thoroughly emptied each time it is rotated to the discharge station. This fundamentally solves the problem of incomplete discharge caused by material adhesion, greatly improving the accuracy and reliability of quantitative discharge.

[0013] 2. This application, by installing a dust cover around the outer periphery of the feeding pipe and forming an air collection chamber, allows a negative pressure fan to generate a stable negative pressure at the inlet of the air collection chamber. This actively and efficiently captures dust generated by the falling material during the feeding process, preventing dust from escaping from the feeding port. This not only improves the working environment and reduces material waste, but also achieves a clean and environmentally friendly production process.

[0014] 3. In this application, since the storage tank can be continuously and automatically cleaned, long-term adhesion and hardening of materials are avoided, which significantly reduces the frequency of equipment shutdown for cleaning due to blockage and the amount of maintenance work, ensuring continuous and stable production and extending the service life of the equipment.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the device provided in the embodiments of this application; Figure 2 This is a partial half-section structural diagram of the device provided in an embodiment of this application; Figure 3 This is a bottom view of the structure of the dust cover provided in an embodiment of this application; Figure 4 This is a bottom view of the shell structure provided in an embodiment of this application.

[0017] The reference numerals in the detailed embodiments are as follows: An anti-adhesion spherical cement powder quantitative feeding device 100 includes a housing 110, a tilting shaft 111, a storage tank 111a, a feeding port 112, a feeding pipe 113, a drive motor 120, a negative pressure fan 130, a dust cover 140, an air collection chamber 141, a first air duct 150, a second air duct 160, a distribution plate 161, a branch air blowing pipe 162, a nozzle 163, an elastic baffle 170, and an engineering plastic flap 171. Detailed Implementation

[0018] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0019] For details, please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of the device provided in an embodiment of this application. Figure 2 This is a partial half-section diagram of the equipment provided in an embodiment of this application. Figure 3 This is a bottom view of the dust cover structure provided in an embodiment of this application. Figure 4This is a bottom view of the housing structure provided in an embodiment of this application. The anti-adhesion spherical cement powder quantitative feeding device 100 includes a housing 110, a drive motor 120, and a negative pressure fan 130. The housing 110 has a chamber inside, and a rotating shaft 111 is horizontally rotatably arranged inside the chamber. One end of the rotating shaft 111 is connected to the drive motor 120 for transmission. The drive motor 120 can be a stepper motor or a servo motor. During operation, the drive motor 120 drives the rotating shaft 111 to rotate. Multiple storage troughs 111a are spaced apart along the circumference of the rotating shaft 111. The number of storage troughs 111a is four, six, or eight. During the rotation of the rotating shaft 111, the material at the top of the housing 110 enters the storage trough 111a at the top of the rotating shaft 111. As the rotating shaft 111 continues to rotate, the upper storage trough 111a rotates to the bottom, and the material inside falls into the feeding pipe 113 under the action of gravity. The feeding speed can be adjusted by controlling the rotation speed of the drive motor 120. The top of the housing 110 has a feeding port 112 communicating with the chamber. The top of the feeding port 112 can be connected to a conventional storage device with a corresponding V-shaped hopper to maintain sufficient powder storage. The bottom of the housing 110 has a discharge pipe 113 communicating with the chamber. The discharge pipe 113 can be fixed to the bottom of the housing 110 by a flange. The discharge pipe 113 is located directly below the housing 110. When the storage hopper is tilted to the bottom, the material can fall directly into the discharge pipe 113 and then into the corresponding conveying or packaging equipment. A dust cover 140 is fitted around the outer periphery of the discharge pipe 113. The top of the dust cover 140 is sealed to the bottom of the housing 110 by welding or a flange. An annular air collection chamber 141 is formed between the inner wall of the dust cover 140 and the outer wall of the discharge pipe 113. The inlet of the negative pressure fan 130 is connected to the air collection chamber 141 through the first air duct 150. The negative pressure fan 130 can be a high-pressure vortex air pump, and its working pressure can be set between 8 kPa and 20 kPa. The negative pressure fan 130 can operate in an intermittent start-up mode. When one of the storage tanks 111a is about to rotate to the bottom, the negative pressure fan 130 starts to blow air. The outlet of the negative pressure fan 130 extends into the cavity of the housing 110 through the second air duct 160, and the air outlet of the second air duct 160 is set towards the storage tank 111a located above the discharge pipe 113, so as to blow airflow toward the storage tank 111a to assist the material inside to fall off. After the negative pressure fan 130 is started, a negative pressure is generated in the air collection chamber 141, which sucks in the dust of the discharge. At the same time, the negative pressure fan 130 pressurizes the airflow and blows it out from the air outlet through the second air duct 160, forming a directional purging airflow that directly acts on the storage tank 111a that is about to be unloaded or is unloading, and uses the kinetic energy of the airflow to force the powder adhering inside to be blown off, thereby achieving efficient cleaning.

[0020] In summary, this application, through the coordinated arrangement of multiple components such as a negative pressure fan 130, a dust cover 140, an air collection chamber 141, a first air duct 150, and a second air duct 160, can form a relatively stable semi-sealed area at the discharge pipe 113. This allows the negative pressure fan 130 to generate a stable negative pressure at this location, guiding the airflow in this area and blowing it towards the storage tank 111a located above it. This directional airflow effectively shovels and cleans the interior of the storage tank 111a, forcibly blowing off damp material adhering to the tank walls and corners, ensuring that the storage tank 111a is thoroughly emptied each time it is rotated to the discharge station. This fundamentally solves the problem of incomplete discharge caused by material adhesion, greatly improving the accuracy and reliability of quantitative discharge.

[0021] In some embodiments, the end of the second air duct 160 is connected to a plurality of branch air blowing pipes 162 via a diverter plate 161. The branch air blowing pipes 162 extend into the cavity of the housing 110 and their air outlets are directed toward the storage tank 111a located above the discharge pipe 113. In this embodiment, by providing multiple branch air blowing pipes 162, the blowing range of the storage tank 111a is wider and more uniform, achieving a more comprehensive and thorough blowing of the storage tank 111a without dead angles, and further ensuring the blowing effect.

[0022] In some embodiments, a nozzle 163 is provided at the air outlet of the second air duct 160. The nozzle 163 is used to converge and accelerate the airflow. In this embodiment, the internal channel of the nozzle 163 can be designed to be tapered, which serves to converge and accelerate the airflow, transforming the dispersed airflow into a high-speed "air knife" to increase the impact force of the airflow, thereby more effectively peeling off materials with strong adhesion.

[0023] In some embodiments, the dust cover 140 has an opening at the bottom, and its bottom edge extends downward and beyond the bottom end of the feed pipe 113. In this embodiment, the dust cover 140 has an open bottom design, and its bottom edge extends downward and beyond the bottom end of the feed pipe 113 by a certain distance, forming a sunken buffer zone, which can effectively reduce dust overflow caused by internal airflow disturbance and further improve the dustproof effect.

[0024] In some embodiments, an elastic curtain 170 is provided at the bottom opening of the dust cover 140. The elastic curtain 170 includes four engineering plastic valves 171. One end of each engineering plastic valve 171 is fixed to the edge of the bottom opening of the dust cover 140, and the other end extends towards the center of the dust cover 140 and hangs down freely, forming a cross-shaped channel between the multiple engineering plastic valves 171. In this embodiment, an elastic curtain 170 is provided at the bottom opening of the dust cover 140. The elastic curtain 170 is composed of four independent engineering plastic valves 171 made of wear-resistant and flexible engineering plastics (such as polyurethane or nylon). One end of each engineering plastic valve 171 is fixed to the edge of the bottom opening of the dust cover 140 by a pressure plate or screw. It should be noted that the multiple engineering plastic valves 171 are not completely sealed, but there are gaps. When material falls, it can easily open the channel, and the valves quickly rebound and close after passing through. When the negative pressure fan 130 is working, an airflow is formed in this cross-shaped channel, which draws in air from the outside to the inside. This allows dust that may be stirred up when the material falls to be drawn in by this inward airflow as the material drifts downward, further preventing the dust from escaping outward.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A non-adhesive spherical cement powder quantitative feeding device, comprising a housing, a drive motor, and a negative pressure fan, wherein the housing has a chamber inside, and a tilting shaft is horizontally rotatably arranged inside the chamber, one end of the tilting shaft is connected to the drive motor, and a plurality of storage troughs are spaced apart along the circumference of the tilting shaft, the top of the housing has a feeding port communicating with the chamber, and the bottom of the housing has a feeding pipe communicating with the chamber, characterized in that: A dust cover is fitted around the outer periphery of the feeding pipe. The top of the dust cover is sealed to the bottom of the housing. An annular air collection chamber is formed between the inner wall of the dust cover and the outer wall of the feeding pipe. The inlet of the negative pressure fan is connected to the air collection chamber through the first air duct, and the outlet of the negative pressure fan extends into the cavity of the housing through the second air duct. The outlet of the second air duct is arranged facing the storage tank located above the feed pipe, so as to blow airflow toward the storage tank to assist the material inside to fall off.

2. The anti-adhesion spherical cement powder quantitative feeding device according to claim 1, characterized in that, The number of storage tanks is four, six, or eight.

3. The anti-adhesion spherical cement powder quantitative feeding device according to claim 1 or 2, characterized in that, The end of the second air duct is connected to multiple branch air blowing pipes via a distribution plate. The branch air blowing pipes extend into the cavity of the housing and their air outlets are positioned towards the storage tank located above the discharge pipe.

4. The anti-adhesion spherical cement powder quantitative feeding device according to claim 1 or 2, characterized in that, The second air duct is equipped with a nozzle at its outlet, which is used to constrict and accelerate the airflow.

5. The anti-adhesion spherical cement powder quantitative feeding device according to claim 1 or 2, characterized in that, The dust cover has an opening at the bottom, and its bottom edge extends downward and beyond the bottom end of the feed tube.

6. The anti-adhesion spherical cement powder quantitative feeding device according to claim 5, characterized in that, An elastic curtain is provided at the bottom opening of the dust cover.

7. The anti-adhesion spherical cement powder quantitative feeding device according to claim 6, characterized in that, The elastic curtain includes four engineering plastic flaps. One end of each engineering plastic flap is fixed to the edge of the bottom opening of the dust cover, and the other end extends toward the center of the dust cover and hangs down freely. A cross-shaped channel is formed between the multiple engineering plastic flaps.

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