Blanking device of aluminum electrolysis crown block

Abstract

The utility model relates to the technical field of aluminum electrolysis, in particular to an aluminum electrolysis crown block discharging device which comprises a gate valve, an air cylinder and a controller, the gate valve comprises a movable gate, and the air cylinder comprises a piston body, a piston rod body and an air cylinder body. The piston body is embedded in the air cylinder body, the first end of the piston body is connected with the first end of the piston rod body, an elastic piece is arranged between the second end of the piston body and the air cylinder body, air inlets are formed in the front end and the rear end of the air cylinder body, and electromagnetic valves are arranged on the air inlets and electrically connected with the controller. The first end of a movable inserting plate of the gate valve is plugged in a pipe cavity of the crown block discharging pipe in an openable mode, and the second end of the movable inserting plate of the gate valve is connected with the second end of the piston rod body. The gate valve is matched with the single-action air cylinder, the gate valve can automatically return to the closed state through the arranged elastic piece when air of the air cylinder is cut off, the phenomena of material leakage and material blocking caused by the fact that the discharging valve of the crown block is not closed in time can be effectively avoided, and the discharging valve is convenient to install and high in operation reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolysis, in particular to an aluminum electrolysis overhead crane unloading device. Background Art

[0002] The overhead crane is the main equipment in the aluminum electrolysis workshop. It is mainly responsible for shelling, slag removal, adding anodes and feeding during the anode replacement process in the aluminum electrolysis workshop. Its technical performance indicators will have an important impact on production. When using the overhead crane feeding pipe to feed granular and crushed materials, the following problems mainly exist:

[0003] The original overhead crane unloading valve adopts a double-acting cylinder to drive the opening and closing of the unloading valve. When the air compressor fails and the pressure is insufficient, it is difficult to provide a large driving force, and the unloading valve cannot be closed, resulting in excessive unloading and leakage. Secondly, the main structure of the unloading valve of the original overhead crane is installed inside the lower outer shell of the material box. It has a complex structure and is composed of bolts, shafts, sleeves, bearing seats, butterfly springs, round plate seals and other components. During daily maintenance, it is impossible to check whether the bearings, sleeves and other structural components are damaged, and it is impossible to add grease for maintenance. During use, the plates supporting the original seals are prone to deformation and damage. When the unloading valve is seriously damaged and needs to be repaired, the entire unloading pipe must be removed and its interior must be disassembled and repaired. The valve cannot be repaired alone. Due to the large overall mass of the unloading pipe and its large size, the entire repair process takes a long time, affects the maintenance efficiency, greatly increases the workload of personnel, seriously affects the unloading of the electrolytic cell, and affects the electrolytic production process. Utility Model Content

[0004] The purpose of the utility model is to provide an aluminum electrolysis overhead crane unloading device, which adopts a plug valve and a single-acting cylinder to seal the overhead crane unloading pipe, and an elastic part is arranged between the rear end of the cylinder body of the cylinder and the piston body, which can automatically return to the closed state when the cylinder is cut off, and can effectively avoid leakage and blockage caused by the untimely closure of the overhead crane unloading valve. The overall design adopts an external detachable design, which is easy to install and has high operational reliability, so as to solve the problems pointed out in the background technology.

[0005] The embodiment of the utility model is realized by the following technical scheme: an aluminum electrolysis overhead crane unloading device, comprising a gate valve, a cylinder and a controller, the gate valve comprising a movable gate, the cylinder comprising a piston body, a piston rod body and a cylinder body;

[0006] Wherein, the piston body is embedded in the cylinder body, the first end of the piston body is connected to the first end of the piston rod body, an elastic member is provided between the second end of the piston body and the cylinder body, a first air inlet is provided at the front end of the cylinder body, and the first air inlet is located at the front end of the first end of the piston body, a second air inlet is provided at the rear end of the cylinder body, and the second air inlet is located at the rear end of the second end of the piston body, and solenoid valves are provided on the first air inlet and the second air inlet, and the solenoid valves are electrically connected to the controller;

[0007] The first end of the movable plug plate of the plug valve can be opened to seal the lumen of the overhead crane unloading pipe, and the second end of the movable plug plate of the plug valve is connected to the second end of the piston rod body.

[0008] According to a preferred embodiment, a positioning device is further provided between the cylinder and the gate valve, and the positioning device is composed of a control connecting rod and a limit switch, the control connecting rod is connected to the piston rod body, and the limit switch is electrically connected to the controller.

[0009] According to a preferred embodiment, the first air inlet and the second air inlet are connected to an output end of an air compressor.

[0010] According to a preferred embodiment, the elastic member is a high-strength spring.

[0011] According to a preferred embodiment, the cylinder is a single-acting cylinder.

[0012] According to a preferred embodiment, it also includes an upper connecting frame, a lower connecting frame and a connecting rib plate; wherein the upper connecting frame and the lower connecting frame are provided with through holes, and the through holes are adapted to the shape of the overhead crane unloading pipe;

[0013] The upper connecting frame is connected to the overhead crane unloading valve connecting frame, the connecting rib plate is arranged between the upper connecting frame and the lower connecting frame, and the plug valve is connected between the upper connecting frame and the lower connecting frame.

[0014] According to a preferred embodiment, a viewing window is provided on the overhead crane discharge pipe, and the viewing window is located below the gate valve.

[0015] The technical solution of an aluminum electrolysis overhead crane unloading device provided by an embodiment of the utility model has at least the following advantages and beneficial effects: the overhead crane unloading device provided by the utility model adopts a gate valve and a single-acting cylinder to seal the overhead crane unloading pipe, and an elastic part is arranged between the rear end of the cylinder body of the cylinder and the piston body, which can automatically return to a closed state when the cylinder is cut off from air, and can effectively avoid leakage and blockage caused by untimely closure of the overhead crane unloading valve, and the overall external detachable design is adopted, which is easy to install and has high operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of an aluminum electrolysis overhead crane unloading device provided in Example 1 of the utility model;

[0017] Figure 2 A schematic diagram of electrical connections of an aluminum electrolysis overhead crane unloading device provided in Example 1 of the utility model;

[0018] Icons: 1- gate valve, 2- cylinder, 3- piston rod body, 4- first air inlet, 5- second air inlet, 6- feed pipe, 7- positioning device, 8- upper connecting frame, 9- lower connecting frame, 10- connecting rib plate, 11- window, 12- cylinder mounting bracket. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Example 1

[0021] See also Figure 1 As shown, Figure 1 The front view of an aluminum electrolysis overhead crane unloading device provided by an embodiment of the present invention is shown in FIG. More specifically, the aluminum electrolysis overhead crane unloading device comprises an upper connecting frame 8, a lower connecting frame 9, a connecting rib plate 10, a gate valve 1, a cylinder 2 and a controller.

[0022] In some embodiments, the gate valve 1 includes a movable gate, which is designed in an arc shape; wherein the first end of the movable gate of the gate valve 1 can be opened to block the lumen of the overhead crane feed pipe 6, see Figure 1 When the movable gate of the gate valve 1 moves to the left, the overhead crane feed pipe 6 can be blocked, and when the movable gate of the gate valve 1 moves to the right, the overhead crane feed pipe 6 can be opened.

[0023] In this embodiment, the cylinder 2 is a single-acting cylinder 2, using the QD-CFL-150 model, with a working pressure of 0.15-0.8MPa, a stroke of 345mm, and a working medium of compressed air. Specifically, the cylinder 2 includes a piston body, a piston rod body 3 and a cylinder 2 body, wherein the piston body is embedded in the cylinder 2 body, the first end of the piston body is connected to the first end of the piston rod body 3, the second end of the movable gate of the gate valve 1 is connected to the second end of the piston rod body 3, and an elastic member is provided between the second end of the piston body and the cylinder 2 body. Specifically, in one implementation of this embodiment, the elastic member is a high-strength spring.

[0024] A first air inlet 4 is provided at the front end of the cylinder 2 body, and the first air inlet 4 is located at the front end of the first end of the piston body. A second air inlet 5 is provided at the rear end of the cylinder 2 body, and the second air inlet 5 is located at the rear end of the second end of the piston body. Solenoid valves are provided on the first air inlet 4 and the second air inlet 5, and the solenoid valves are electrically connected to the controller. Specifically, in one implementation of this embodiment, the first air inlet 4 and the second air inlet 5 are connected to the output end of the air compressor, and the air compressor is used as the air source.

[0025] More specifically, the cylinder 2 of this embodiment is provided with a cylinder 2 mounting bracket on the output side, and the cylinder 2 mounting bracket is provided with a positioning device 7, which is composed of a control connecting rod and a limit switch, the control connecting rod is connected to the piston rod body 3, and the limit switch is electrically connected to the controller. In this embodiment, the positioning device 7 is used to monitor the stroke of the piston rod body 3, so as to adjust the opening of the movable plug-in plate of the plug-in plate valve 1, thereby meeting the different feeding requirements of the actual production of powder and block materials, and at the same time, it can effectively avoid the occurrence of blocking and jamming of materials, and ensure the smooth completion of the electrolytic feeding operation; it can meet the requirements of alumina and anode crushing material covering material, improve the feeding amount control accuracy and equipment operation efficiency, shorten the opening time of the electrolytic cell cover, and thus improve the economic and technical indicators of the electrolytic cell.

[0026] More specifically, the upper connecting frame 8 and the lower connecting frame 9 are provided with through holes, and the through holes are adapted to the shape of the overhead crane discharge pipe 6. The upper connecting frame 8 is connected to the overhead crane discharge valve connecting frame, and the connecting rib plate 10 is erected between the upper connecting frame 8 and the lower connecting frame 9. The gate valve 1 is connected between the upper connecting frame 8 and the lower connecting frame 9, and is fixed by bolts; a window 11 is provided on the overhead crane discharge pipe 6, and the window 11 is located below the gate valve 1.

[0027] In addition, it should be noted that the above structures are assembled with external mechanical components, each component is made of Q235 material, and each component can be independently disassembled and maintained, with the characteristics of simple structure, strong practicality, and easy maintenance.

[0028] Working principle:

[0029] When the solenoid valve is energized, compressed air enters the second air inlet 5, pushing the piston body to move to the left, and the piston rod body 3 pushes the movable gate of the gate valve 1 to move to the left, thereby sealing the overhead crane unloading pipe 6.

[0030] Under the monitoring of the positioning device 7, when the piston rod body 3 moves to the specified stroke, the limit switch is triggered, and the limit switch sends a signal to the controller. The controller controls the solenoid valve to conduct the valve to the first air inlet 4. When compressed air enters the first air inlet 4, the piston body is pushed to the right, and the piston rod body 3 drives the movable plug plate to move to the right, thereby realizing the opening of the overhead crane unloading pipe 6.

[0031] When there is an air source or no air source, the high-strength spring's own rebound force can push the piston body to move quickly to the left, thereby quickly blocking the overhead crane unloading pipe 6, thereby avoiding the problem of leakage and jamming caused by the failure of the overhead crane unloading pipe 6 to close due to the lack of compressed air source caused by equipment failure.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aluminum electrolysis overhead crane unloading device, characterized in that: It comprises a gate valve (1), a cylinder (2) and a controller, wherein the gate valve (1) comprises a movable gate, and the cylinder (2) comprises a piston body, a piston rod body (3) and a cylinder (2) body; The piston body is embedded in the cylinder (2) body, the first end of the piston body is connected to the first end of the piston rod body (3), an elastic member is provided between the second end of the piston body and the cylinder (2) body, a first air inlet (4) is provided at the front end of the cylinder (2) body, and the first air inlet (4) is located at the front end of the first end of the piston body, a second air inlet (5) is provided at the rear end of the cylinder (2) body, and the second air inlet (5) is located at the rear end of the second end of the piston body, and electromagnetic valves are provided on the first air inlet (4) and the second air inlet (5), and the electromagnetic valves are electrically connected to a controller; The first end of the movable plug plate of the plug valve (1) can be opened to seal the lumen of the overhead crane feed pipe (6), and the second end of the movable plug plate of the plug valve (1) is connected to the second end of the piston rod body (3).

2. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: A positioning device (7) is also provided between the cylinder (2) and the gate valve (1), and the positioning device (7) is composed of a control connecting rod and a limit switch, the control connecting rod is connected to the piston rod body (3), and the limit switch is electrically connected to the controller.

3. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: The first air inlet (4) and the second air inlet (5) are connected to the output end of the air compressor.

4. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: The elastic member is a high-strength spring.

5. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: The cylinder (2) is a single-acting cylinder (2).

6. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: It also includes an upper connecting frame (8), a lower connecting frame (9) and a connecting rib plate (10); wherein the upper connecting frame (8) and the lower connecting frame (9) are provided with through holes, and the through holes are adapted to the shape of the overhead crane feed pipe (6); The upper connecting frame (8) is connected to the overhead crane unloading valve connecting frame, the connecting rib plate (10) is arranged between the upper connecting frame (8) and the lower connecting frame (9), and the gate valve (1) is connected between the upper connecting frame (8) and the lower connecting frame (9).

7. The aluminum electrolysis overhead crane unloading device according to claim 1, characterized in that: The overhead crane feed pipe (6) is provided with a viewing window (11), and the viewing window (11) is located below the gate valve (1).

Images