Liquid level control device

Abstract

The utility model discloses a liquid level control device which comprises a floating ball assembly arranged on a lead melting furnace, the floating ball assembly comprises a floating ball and a floating ball rod, the floating ball rod floats up and down on the floating ball and can be driven to slide on the lead melting furnace in the vertical direction, and the floating ball rod can be jacked to move upwards so that the floating ball can be separated from a lead liquid level; the floating ball rod is arranged on the lead melting furnace in an up-down sliding mode, the floating ball rod can be installed at any position on the lead melting furnace, the floating ball can be far away from the furnace wall, the situation that the floating ball and the furnace wall are connected together through lead slag, and consequently failure is caused is avoided, the floating ball rod moves upwards, the floating ball is separated from the lead liquid level, and the lead slag on the floating ball is conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting production of lead-acid battery grids, and specifically to a liquid level control device. Background Technology

[0002] When melting and stirring lead blocks in the lead-acid battery continuous casting line, the lead level in the lead-melting furnace is monitored. This monitoring is sometimes done visually by installing a viewing window on the side wall of the furnace. However, during operation, the lead can adhere to the viewing window, interfering with the view. Therefore, more accurate monitoring is needed.

[0003] Therefore, most liquid level control components are currently used to monitor the liquid level. Most of these components are lever-type, which use a float that floats on the liquid surface and applies force to the lever to monitor the liquid level in real time. However, during use, the float is close to the furnace wall, and the lead slag at the float is difficult to handle when removing lead slag, causing the lead slag to accumulate. Eventually, the float is easily attached to the furnace wall by the lead slag, leading to failure.

[0004] Therefore, there is an urgent need for a liquid level control device that can keep the float away from the furnace wall, preventing the float from being stuck to the furnace wall by lead slag and causing it to malfunction. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a liquid level control device that allows the float to be kept away from the furnace wall at any position in the lead melting furnace, so as to avoid the float being connected to the furnace wall by lead slag and thus failing.

[0006] The liquid level control device provided by this utility model adopts the following technical solution:

[0007] A liquid level control device includes a float assembly disposed in a lead-melting furnace. The float assembly includes a float and a float rod, the float rod being driven to slide vertically on the lead-melting furnace as the float floats up and down.

[0008] Furthermore, a guide cylinder is provided on the top of the lead melting furnace, and the float rod passes through the guide cylinder and can move up and down along the guide cylinder.

[0009] Furthermore, a mounting bracket is provided on the top of the guide cylinder, and liquid level sensors are installed on the mounting bracket at different height positions. A sensing block for sensing and cooperating with the liquid level sensors is provided on the float rod.

[0010] Furthermore, the liquid level sensor includes a high liquid level sensor and a low liquid level sensor, the mounting bracket includes two vertical and mutually perpendicular mounting plates, the high liquid level sensor and the low liquid level sensor are respectively mounted on the two mounting plates, and the side wall of the sensing block is provided with sensing surfaces that respectively cooperate with the high liquid level sensor and the low liquid level sensor.

[0011] Furthermore, the mounting plate is provided with strip-shaped mounting holes along the vertical direction for mounting liquid level sensors.

[0012] Furthermore, it also includes a float lifting drive, wherein a limit rod is provided at the top of the float rod along the horizontal direction. The limit rod is located on the moving path of the driving end of the float lifting drive. When the driving end of the float lifting drive moves upward, it lifts the limit rod upward, causing the float to move upward and detach from the lead liquid surface.

[0013] Furthermore, the float lifting drive is provided with a guide frame, and one side of the guide frame is provided with a first strip-shaped guide hole for the limit rod to move up and down.

[0014] Furthermore, the driving end of the float lifting drive is provided with a lifting part for lifting the limiting rod, and guide parts are rotatably provided on both sides of the lifting part. The guide frame is provided with second strip-shaped guide holes on both sides for the guide parts to slide.

[0015] Furthermore, the lifting part is provided with a rolling part, which is rolled on the inner walls of both sides where the second strip-shaped guide hole is provided.

[0016] Furthermore, a limit drive cylinder is provided on the guide frame along the lateral direction. When the drive end of the limit drive cylinder extends, it is located on the movement path of the limit rod to limit the highest position of the limit float.

[0017] In summary, the present invention has at least one of the following beneficial effects:

[0018] 1. By sliding the float rod up and down on the lead melting furnace, it can be installed at any position on the furnace, allowing the float to stay away from the furnace wall and preventing it from being stuck to the furnace wall by lead slag, which would cause it to fail. By moving the float rod upward, the float can be removed from the lead melt surface, making it easier to clean the lead slag on the float.

[0019] 2. By setting up high-level and low-level sensors, the liquid level height can be detected in real time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model at a high liquid level.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model at a low liquid level.

[0022] Figure 3 for Figure 2 Enlarged view of section A;

[0023] Figure 4 This is a schematic diagram of the structure of the float being lifted out of the lead liquid surface in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Float assembly; 11. Float; 12. Float rod; 13. Sensing block; 14. Limiting rod; 2. Float lifting drive component; 21. Lifting part; 22. Guide part; 23. Rolling part; 24. Roller; 3. Guide cylinder; 31. Mounting bracket; 32. Strip mounting hole; 4. Liquid level sensor; 41. High liquid level sensor; 42. Low liquid level sensor; 5. Guide frame; 51. First strip guide hole; 52. Second strip guide hole; 6. Limiting drive cylinder. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0028] This utility model discloses a liquid level control device. (Refer to...) Figure 1-4 The liquid level control device includes a float assembly 1 installed in the lead melting furnace. The float assembly 1 includes a float 11 and a float rod 12. The float rod 12 can slide vertically on the lead melting furnace as the float 11 floats up and down. The float rod 12 can be lifted and moved upward to make the float 11 detach from the lead liquid surface. By sliding the float rod 12 up and down on the lead melting furnace, it can be installed at any position on the furnace, allowing the float 11 to be away from the furnace wall. This prevents the float 11 from being attached to the furnace wall by lead slag, which would prevent the float from floating with changes in the lead liquid level. By moving the float rod 12 upward, the float 11 is detached from the lead liquid surface, making it convenient to clean the lead slag on the float 11. The liquid level of the lead liquid in the lead melting furnace can be observed based on the up and down movement of the float rod 12, and it can be determined whether the liquid level is qualified.

[0029] In this embodiment, a guide cylinder 3 is provided on the top of the lead melting furnace. The float rod 12 passes through the guide cylinder 3 and can move up and down along the guide cylinder 3. The guide cylinder 3 can guide the movement of the float rod 12, so that the float rod 12 can only move along the guide cylinder 3.

[0030] In this embodiment, a mounting bracket 31 is provided on the top of the guide cylinder 3. Liquid level sensors 4 are installed on the mounting bracket 31 at different height positions. A sensing block 13 is provided on the float rod 12 for sensing and cooperating with the liquid level sensor 4. The float 11 carries the sensing block 13 through the float rod 12 and moves up and down with the liquid lead level. During the up and down movement, the sensing block 13 is sensed by the liquid level sensor 4 at the corresponding position. The liquid level sensor 4 will transmit the sensed data to the control cabinet to indicate whether the liquid level in the lead melting furnace is qualified. If the liquid level is too low, the liquid lead will be added. If the liquid level is too high, the operation will be stopped and the equipment will be inspected.

[0031] In this embodiment, the liquid level sensor 4 includes a high liquid level sensor 41 and a low liquid level sensor 42. The mounting bracket 31 includes two vertically aligned and mutually perpendicular mounting plates. The high liquid level sensor 41 and the low liquid level sensor 42 are respectively mounted on the two mounting plates. The side wall of the sensing block 13 is provided with sensing surfaces that respectively cooperate with the high liquid level sensor 41 and the low liquid level sensor 42. The float 11 carries the sensing block 13 through the float rod 12, moving it up and down with the lead liquid level. When the sensing block 13 is sensed by the low liquid level sensor 42, it indicates that the liquid level is low and lead ingots need to be added. At this time, the sensing block 13 is limited by the guide cylinder 3, and even if the lead liquid level continues to drop, the sensing block 13 will not drop further, and the low liquid level sensor 42 will continue to indicate that the lead liquid level is low. When the high liquid level sensor 41 and the low liquid level sensor 42 are in between, it indicates that the lead liquid level is appropriate and no lead ingots need to be added. When the sensing block 13 is sensed by the high liquid level sensor 41, it indicates that the liquid level is high, prompting a fault check and troubleshooting of the excessively high lead liquid level.

[0032] In this embodiment, the mounting plate is provided with a strip-shaped mounting hole 32 along the vertical direction for mounting the liquid level sensor 4. The mounting height of the high liquid level sensor 41 and the low liquid level sensor 42 can be adjusted in the strip-shaped mounting hole 32 according to the liquid level requirements, making it more convenient to use.

[0033] In this embodiment, a float lifting drive 2 is also included. A limit rod 14 is provided at the top of the float rod 12 in a horizontal direction. The limit rod 14 is located on the moving path of the driving end of the float lifting drive 2. When the driving end of the float lifting drive 2 moves upward, it lifts the limit rod 14 upward, causing the float 11 to move upward and leave the lead liquid surface. The float lifting drive 2 is a cylinder or an electric cylinder. When working normally, the driving end of the float lifting drive 2 retracts, and the limit rod 14 moves due to the up and down movement of the float 11. When it is necessary to remove the float 11, the float lifting drive 2 is activated, and the driving end of the float lifting drive 2 extends upward to lift the limit rod 14, raising the float 11 to the lead liquid surface, making it convenient to clean the lead slag attached to the float 11.

[0034] In this embodiment, a guide frame 5 is provided on the float lifting drive 2. A first strip-shaped guide hole 51 is provided on one side of the guide frame 5 along the vertical direction for the limiting rod 14 to move up and down. The first strip-shaped guide hole 51 can guide the movement of the limiting rod 14, so that the limiting rod 14 can only move along the first strip-shaped guide hole 51 when it moves.

[0035] In this embodiment, the driving end of the float lifting drive 2 is provided with a lifting part 21 for lifting the limiting rod 14. Guide parts 22 are rotatably provided on both sides of the lifting part 21. The guide frame 5 is provided with second strip-shaped guide holes 52 for the guide parts 22 to slide on both sides. During the up and down movement of the lifting part 21, the guide parts 22 can move along the second strip-shaped guide holes 52 and roll within the second strip-shaped guide holes 52, which can reduce the friction between the lifting part 21 and the guide frame 5 and make the operation smoother. At the same time, in order to avoid the lifting part 21 generating a large amount of friction when lifting the limiting rod 14, multiple parallel rollers 24 are provided on the top of the lifting part 21. When lifting the limiting rod 14, the rollers 24 contact the limiting rod 14. When friction occurs, the rollers 24 rotate, reducing the friction between the lifting part 21 and the limiting rod 14.

[0036] In this embodiment, the lifting part 21 is provided with a rolling part 23, which is rolled on the inner walls on both sides of the second strip-shaped guide hole 52. Both the rolling part 23 and the guide part 22 are bearings. The rolling part 23 can be stuck on the inner walls on both sides of the guide frame 5 to limit the lifting part 21, so that the lifting part 21 moves more stably and smoothly when it moves up and down. At the same time, it can roll on the inner walls on both sides of the guide frame 5 when it moves up and down.

[0037] In this embodiment, a limit drive cylinder 6 is provided on the guide frame 5 along the horizontal direction. The limit drive cylinder 6 is a pneumatic cylinder or an electric cylinder. When the drive end of the limit drive cylinder 6 extends, it is located on the moving path of the limit rod 14 to limit the highest position of the limit float 11. During normal operation, the drive end of the limit drive cylinder 6 extends. When the sensing block 13 moves to the position of the high liquid level sensor 41, the limit rod 14 will push against the drive end of the drive rod 6 to prevent the limit rod 14 from moving upward. At this time, due to the action of the limit drive cylinder 6, even if the lead liquid level continues to rise, the sensing block 14 will not rise again, and the high liquid level sensor 41 will always indicate that the lead liquid level is high. When it is necessary to clean the lead slag, the limit drive cylinder 6 is controlled to retract, the drive end of the float lifting drive 2 extends, and the limit rod 14 is pushed upward to push the float 11 out of the lead liquid surface, which is convenient for cleaning the lead slag at the float.

[0038] In this embodiment, detection sensors for detecting the extension and retraction state of the drive end are provided at both ends of the cylinder body of the limit drive cylinder 6. The piston inside the limit drive cylinder 6 is attached with a magnet, and the two detection sensors can sense whether the limit drive cylinder 6 is in the extended or retracted state.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A liquid level control device, characterized in that: The system includes a float assembly (1) installed in a lead melting furnace. The float assembly (1) includes a float (11) and a float rod (12). The float rod (12) can float up and down on the float (11) and can be driven to slide vertically on the lead melting furnace. The float rod (12) can be lifted and moved upward to make the float (11) leave the surface of the lead liquid.

2. The liquid level control device according to claim 1, characterized in that: The top of the lead-melting furnace is provided with a guide cylinder (3), and the float rod (12) passes through the guide cylinder (3) and can move up and down along the guide cylinder (3).

3. The liquid level control device according to claim 2, characterized in that: The top of the guide cylinder (3) is provided with a mounting bracket (31), and liquid level sensors (4) are provided on the mounting bracket (31) at different height positions. The float rod (12) is provided with a sensing block (13) for sensing and cooperating with the liquid level sensor (4).

4. The liquid level control device according to claim 3, characterized in that: The liquid level sensor (4) includes a high liquid level sensor (41) and a low liquid level sensor (42). The mounting bracket (31) includes two vertically oriented and mutually perpendicular mounting plates. The high liquid level sensor (41) and the low liquid level sensor (42) are respectively mounted on the two mounting plates. The side wall of the sensing block (13) is provided with sensing surfaces that respectively cooperate with the high liquid level sensor (41) and the low liquid level sensor (42).

5. The liquid level control device according to claim 4, characterized in that: The mounting plate is provided with a strip-shaped mounting hole (32) for mounting the liquid level sensor (4) along the vertical direction.

6. The liquid level control device according to claim 1, characterized in that: It also includes a float lifting drive (2), and a limit rod (14) is provided at the top of the float rod (12) in the horizontal direction. The limit rod (14) is located on the moving path of the driving end of the float lifting drive (2). When the driving end of the float lifting drive (2) moves upward, it will lift the limit rod (14) upward so that the float (11) moves upward and leaves the lead liquid surface.

7. The liquid level control device according to claim 6, characterized in that: The float lifting drive (2) is provided with a guide frame (5), and a first strip-shaped guide hole (51) is provided on one side of the guide frame (5) in a vertical direction for the limit rod (14) to move up and down.

8. The liquid level control device according to claim 7, characterized in that: The driving end of the float lifting drive (2) is provided with a lifting part (21) for lifting the limiting rod (14). The lifting part (21) is rotatably provided with guide parts (22) on both sides. The guide frame (5) is provided with second strip-shaped guide holes (52) for sliding of the guide parts (22) on both sides.

9. The liquid level control device according to claim 8, characterized in that: The lifting part (21) is provided with a rolling part (23), which is rolled on the inner walls of both sides where the second strip guide hole (52) is provided.

10. The liquid level control device according to claim 7, characterized in that: A limit drive cylinder (6) is provided on the guide frame (5) along the lateral direction. When the drive end of the limit drive cylinder (6) extends out, it is located on the moving path of the limit rod (14) to limit the highest position of the limit float (11).

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