Electric constant-volume blanking device
Through the electric fixed-capacity and discharge device, the motor drive screw is used to achieve synchronous movement of the upper cover and the lower cover, which solves the problem of inaccurate quantitative discharge of the existing pneumatic fixed-capacity and discharge device, and achieves stable and accurate material replenishment.
Patent Information
- Application Number
- CN202420665392.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing pneumatic fixed-capacity discharge device is easily affected by air pressure during the opening and closing of the upper cover and lower cover, resulting in inaccurate quantitative discharge, and unstable time gaps in both directions of the upper cover and lower cover.
The electric fixed-capacity and discharge device is adopted to drive the moving wire master and the force transmission rod through the motor to realize the synchronous up and down movement of the upper cover and the lower cover, ensuring the stable switching of the fixed-capacity cylinder between the filling, storage and discharge stations.
The quantitative discharge of the fixed-volume discharge device is realized, avoiding the influence of air pressure, ensuring stable opening and closing of the upper cover and lower cover, and improving the accuracy and consistency of the discharge.
Smart Images
Figure CN222594039U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric constant-volume feeding device for quantitatively replenishing materials in the field of aluminum electrolysis. Background Art
[0002] In the aluminum electrolysis production process, as the electrolysis proceeds, the material in the aluminum electrolysis cell is constantly consumed, so it is necessary to replenish the material into the electrolysis cell in a timely manner. In the prior art, a constant volume feeder is usually used to achieve quantitative replenishment of the aluminum electrolysis cell.
[0003] The fixed volume feeder includes a fixed volume cylinder, which means that its volume is fixed. The upper and lower ends of the fixed volume cylinder are respectively provided with an upper cover and a lower cover. The upper cover and the lower cover are connected to the cylinder piston of the cylinder through a push rod. By controlling the on and off power of the two-position four-way valve, the up and down movement of the cylinder piston is realized, and then the opening state of the upper cover and the lower cover is changed to realize the filling and unloading of the fixed volume cylinder.
[0004] Basically, the fixed volume cylinder has two working states, namely, the filling state and the unloading state. In the filling state, the upper cover is opened and the lower cover is closed, and the material enters the fixed volume cylinder through the upper feed port of the fixed volume cylinder; in the unloading state, the upper cover is closed and the lower cover is opened, and the material stored in the fixed volume cylinder is discharged into the aluminum electrolytic cell through the lower discharge port at the bottom of the fixed volume cylinder.
[0005] The problem with the existing constant volume feeder is that there is a time gap in the two-way opening process of the upper cover and the lower cover during the switching process. For example, when switching from the filling state to the discharge state, the upper cover is closed and the lower cover is opened. In the time gap from the opening of the lower cover to the closing of the upper cover, filling and discharge will occur at the same time, which will have a certain impact on the quantitative discharge of the constant volume feeder. In addition, due to the influence of the on-off switching speed of the solenoid valve, the movement resistance of the cylinder piston, the compressed air pressure fluctuation, etc., the time gap between the two-way opening of the upper cover and the lower cover during the operation of the constant volume feeder will fluctuate and become unstable. Utility Model Content
[0006] The purpose of the utility model is to provide an electric constant volume feeding device to solve the problem that the opening and closing process of the upper cover and the lower cover of the pneumatic constant volume feeding device in the prior art is easily affected by the air pressure, and there is a time gap in the process from the opening of the lower cover to the closing of the upper cover, resulting in inaccurate quantitative feeding.
[0007] In order to solve the above technical problems, the technical solution of the mobile electric constant volume unloading device in the utility model is as follows:
[0008] The cam is provided with a plurality of guide cylinders, each of which is provided with a plurality of guide cylinders, and a plurality of guide cylinders are provided with guide cylinders, each of which is provided with a plurality of guide cylinders.
[0009] Furthermore, the upper cover is a truncated spherical head structure with the spherical surface facing downward, and the lower cover is a truncated spherical head structure with the spherical surface facing upward.
[0010] Furthermore, the driving screw rod and the force transmission rod are coaxially arranged, and the force transmission rod has a vertically arranged avoidance hole for avoiding the driving screw rod.
[0011] Furthermore, the force transmission rod is a stepped shaft structure, which includes a large diameter section and a lower diameter section arranged at the bottom of the large diameter section. The large diameter section is a hollow rod, and the inner hole of the large diameter section constitutes the avoidance hole. The movable nut is fixed to the upper end of the large diameter section, and the upper cover and the lower cover are fixed to the small diameter section.
[0012] Furthermore, the upper end of the constant capacity cylinder is connected to the guide cylinder through a connecting cylinder, and the material inlet is opened on the side wall of the connecting cylinder.
[0013] Furthermore, a first position sensor, a second position sensor and a third position sensor are arranged on the inner wall of the guide cylinder from top to bottom, wherein the first position sensor and the second position sensor are arranged in the mounting hole of the inner wall of the guide cylinder, and a protruding structure for triggering the third position sensor is arranged on the force transmission rod, and the first position sensor, the second position sensor and the third position sensor are connected with the controller for sampling, when the moving nut moves upward to trigger the first position sensor, the fixed capacity cylinder is in the filling position; when the moving nut moves downward so that the protruding structure triggers the third position sensor, the fixed capacity cylinder is in the storage position; when the moving nut moves downward to trigger the second position sensor, the fixed capacity cylinder is in the discharging position.
[0014] The beneficial effects of the utility model are as follows: in the utility model, the motor drives the screw rod to move the moving nut up and down, thereby realizing the switching of the fixed capacity cylinder between various stations, the response is timely, and is not affected by the working pressure of the gas. At the same time, the fixed capacity cylinder has three stations. When material replenishment is needed, the moving nut moves the upper cover and the lower cover upward through the force transmission rod, the upper cover is opened, and the lower cover and the fixed capacity cylinder remain in a closed state. At this time, the material enters the fixed capacity cylinder through the material inlet. After the material replenishment is completed, the moving nut moves the upper cover and the lower cover downward through the force transmission rod, and the upper cover and the lower cover are both in a closed state. The distance between the upper cover and the lower cover determines the amount of material. When material discharging is needed, the moving nut moves the upper cover and the lower cover downward, the lower cover is opened, and the material enters the electrolytic cell. The replenished material is determined by the distance between the upper cover and the lower cover, and is not affected by the opening gap between the upper cover and the lower cover. Therefore, the quantitative discharging of the electric fixed volume discharging device can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0016] Figure 1 It is a schematic diagram of a state in which a constant volume cylinder is in a filling station in one embodiment of an electric constant volume feeding device in the utility model;
[0017] Figure 2 It is a schematic diagram of a state in which a constant volume cylinder is at a material storage position in one embodiment of an electric constant volume unloading device in the utility model;
[0018] Figure 3 It is a schematic diagram of a state in which a constant volume cylinder is at a discharging position in one embodiment of an electric constant volume unloading device in the utility model;
[0019] Description of reference numerals: 1. controller; 2. motor; 3. cylinder seat; 4. first position sensor; 5. guide cylinder; 6. movable screw nut; 7. second position sensor; 8. driving screw rod; 9. avoidance hole; 10. force transmission rod; 11. large diameter section; 12. raised structure; 13. third position sensor; 14. material layer; 15. small diameter section; 16. connecting cylinder; 17. material inlet; 18. upper cover; 19. lower cover; 20. fixed capacity cylinder; DETAILED DESCRIPTION
[0020] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0021] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0022] In the utility model, an electric constant volume feeding device is implemented as follows Figures 1 to 3 As shown: it includes a vertically arranged fixed capacity cylinder 20, and also includes a vertically arranged guide cylinder 5 located on the upper side of the fixed capacity cylinder. The guide cylinder 5 is arranged coaxially with the fixed capacity cylinder. The guide cylinder and the fixed capacity cylinder are connected through a connecting cylinder 16. The outer diameter of the fixed capacity cylinder 20 is smaller than the inner diameter of the connecting cylinder. The side wall of the connecting cylinder 16 is provided with a material inlet 17 for introducing materials into the upper end of the fixed capacity cylinder. There are three material inlets 17, which are arranged at intervals along the circumferential direction. When in use, the connecting cylinder and the fixed capacity cylinder are inserted into the material layer, the material inlet is immersed in the material layer, the lower end of the fixed capacity cylinder passes through the material layer, and the material layer is supported by the material layer support plate.
[0023] A movable nut 6 is installed in the guide cylinder 5 along the up-down direction to prevent rotation. In this embodiment, the guide cylinder is a square cylinder, and the movable nut 6 is a square structure adapted to the inner hole of the guide cylinder, so the movable nut 6 cannot rotate relative to the guide cylinder. A cylinder seat 3 is provided at the upper end of the guide cylinder, and a motor 2 controlled by a controller 1 is provided on the cylinder seat. A driving screw 8 matched with the thread of the movable nut is connected to the motor shaft of the motor, and a bearing is provided between the driving screw 8 and the cylinder seat. The driving screw and the movable nut constitute a screw-nut mechanism.
[0024] A vertically arranged force transmission rod 10 is coaxially fixed to the bottom of the movable nut, and an upper cover 18 and a lower cover 19 are fixed on the force transmission rod 10 at intervals. The upper cover 18 and the lower cover 19 can open or close the corresponding end openings of the fixed capacity barrel by vertical translation in the up-down direction. During the process of driving the screw to rotate, the movable nut moves up and down synchronously with the upper cover and the lower cover through the force transmission rod. During the up-down movement of the movable nut, the fixed capacity barrel has a filling station with the upper cover open and the lower cover closed, and the fixed capacity barrel also has a storage station with the upper cover closed and the lower cover closed, and a discharge station with the upper cover closed and the lower cover opened.
[0025] In this embodiment, the upper cover is a truncated spherical head structure with the spherical surface facing downward, and the lower cover is a truncated spherical head structure with the spherical surface facing upward. The truncated spherical head structure refers to a hemispherical structure. The upper end periphery of the upper cover is used for sliding and sealing cooperation with the inner wall of the fixed-capacity cylinder, and the lower end periphery of the lower cover is used for sliding and sealing cooperation with the inner wall of the fixed-capacity cylinder.
[0026] The driving screw and the force transmission rod are coaxially arranged, and the force transmission rod has a vertically arranged avoidance hole 9 for avoiding the driving screw. The force transmission rod is a stepped shaft structure, and the force transmission rod includes a large diameter section 11 and a small diameter section 15 arranged at the bottom of the large diameter section. The large diameter section 11 is a hollow rod, and the inner hole of the large diameter section constitutes the avoidance hole 9. The movable nut is fixed to the upper end of the large diameter section, and the upper cover and the lower cover are fixed to the small diameter section. The large in the large diameter section in this embodiment is relative to the small in the small diameter section. The diameter of the large diameter section is larger than the diameter of the small diameter section, so it is called large.
[0027] A first position sensor 4, a second position sensor 7 and a third position sensor 13 are arranged on the inner wall of the guide cylinder from top to bottom, wherein the first position sensor 4 and the second position sensor 7 are arranged in the mounting hole of the inner wall of the guide cylinder, and a protruding structure 12 for triggering the third position sensor is arranged on the force transmission rod, and the first position sensor, the second position sensor and the third position sensor are connected with the controller for sampling, when the moving nut moves upward to trigger the first position sensor, the fixed capacity cylinder is in the filling position; when the moving nut moves downward so that the protruding structure triggers the third position sensor, the fixed capacity cylinder is in the storage position; when the moving nut moves downward to trigger the second position sensor, the fixed capacity cylinder is in the discharging position.
[0028] When in use, the driving screw is rotated, and the moving screw nut moves the upper cover and the lower cover upward through the force transmission rod. When the moving screw nut triggers the first position sensor, the fixed capacity cylinder is in the feeding position. Figure 1 As shown, at this time, the upper cover is opened, and the lower cover is still in a closed state sealed with the inner wall of the fixed capacity cylinder, and the material in the material layer enters the fixed capacity cylinder through the material inlet; then, the moving nut brings the upper cover and the lower cover downward through the force transmission rod until the raised structure triggers the third position sensor, as shown in FIG. Figure 2 As shown, at this time, the upper cover and the lower cover are both in a closed state of sealing with the inner wall of the fixed capacity cylinder, and the material between the upper cover and the lower cover is the fixed amount of material to be put in; when it is necessary to put the material into the aluminum electrolytic cell, the moving nut brings the upper cover and the lower cover downward through the force transmission rod, as shown in FIG. Figure 3 As shown, the upper cover maintains a sealed state with the inner wall of the fixed volume cylinder, and the lower cover opens the lower end opening of the fixed volume cylinder, and the material enters the aluminum electrolytic cell through the lower end opening of the fixed volume cylinder. During this process, the material will not enter the fixed volume cylinder through the upper end opening of the fixed volume cylinder, which can ensure the accuracy of the fixed volume addition of the material.
[0029] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.
[0030] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.
[0031] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.
[0032] 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. An electric constant volume feeding device, comprising a vertically arranged constant volume cylinder, an upper cover and a lower cover, characterized in that: The electric constant volume unloading device also includes a vertically arranged guide cylinder located on the upper side of the constant volume cylinder, a material inlet for introducing material into the upper end of the constant volume cylinder is arranged between the guide cylinder and the constant volume cylinder, a movable nut is arranged in the guide cylinder along the up and down directions to guide and stop the rotation, a cylinder seat is arranged at the upper end of the guide cylinder, a motor controlled by a controller is arranged on the cylinder seat, a driving screw rod matched with the thread of the movable nut is connected to the motor shaft of the motor, a vertically arranged force transmission rod is fixed on the movable nut, and the upper cover and the lower cover are fixed on the force transmission rod, during the rotation of the driving screw rod, the movable nut moves up and down synchronously with the upper cover and the lower cover through the force transmission rod, and during the up and down movement of the movable nut, the constant volume cylinder has a filling station with the upper cover opened and the lower cover closed, and the constant volume cylinder also has a material storage station with the upper cover closed and the lower cover closed, and a material discharge station with the upper cover closed and the lower cover opened.
2. The electric constant volume feeding device according to claim 1 is characterized in that: The upper cover is a truncated spherical head structure with the spherical surface facing downward, and the lower cover is a truncated spherical head structure with the spherical surface facing upward.
3. The electric constant volume feeding device according to claim 1 is characterized in that: The driving screw rod and the force transmission rod are coaxially arranged, and the force transmission rod is provided with a vertically arranged avoidance hole for avoiding the driving screw rod.
4. The electric constant volume feeding device according to claim 3 is characterized in that: The force transmission rod is a stepped shaft structure, comprising a large diameter section and a lower diameter section arranged at the bottom of the large diameter section. The large diameter section is a hollow rod, and the inner hole of the large diameter section constitutes the avoidance hole. The movable nut is fixed to the upper end of the large diameter section, and the upper cover and the lower cover are fixed to the small diameter section.
5. The electric constant volume feeding device according to claim 1 is characterized in that: The upper end of the fixed capacity cylinder is connected with the guide cylinder through a connecting cylinder, and the material inlet is arranged on the side wall of the connecting cylinder.
6. The electric constant volume feeding device according to any one of claims 1 to 5, characterized in that: A first position sensor, a second position sensor and a third position sensor are arranged on the inner wall of the guide cylinder from top to bottom, wherein the first position sensor and the second position sensor are arranged in the mounting hole of the inner wall of the guide cylinder, and a protruding structure for triggering the third position sensor is arranged on the force transmission rod, and the first position sensor, the second position sensor and the third position sensor are connected with the controller for sampling, when the moving nut moves upward to trigger the first position sensor, the fixed capacity cylinder is in the filling position; when the moving nut moves downward so that the protruding structure triggers the third position sensor, the fixed capacity cylinder is in the storage position; when the moving nut moves downward to trigger the second position sensor, the fixed capacity cylinder is in the discharging position.