A novel liquid level control device

Abstract

This utility model provides a novel liquid level control device, comprising: a float that can float up and down with changes in liquid level; a limiting device for limiting the circumferential rotation of the float; a fixed post extending along a first direction, the fixed end of which is fixed to the liquid storage tank by fasteners, and a magnetic switch is provided on the fixed post; a long rod composed of a first support rod and a second support rod, the first support rod extending along the first direction and the second support rod extending perpendicular to the first direction, the first support rod and the second support rod being fixedly connected, the end of the first support rod near the liquid surface being connected to the float, and the end of the second support rod near the fixed post being fixedly connected to an iron plate, the iron plate triggering the magnetic switch when the float rises to a set position; and a fixing device connecting the end away from the liquid surface to the moving end of the fixed post through the fixing device; the above device avoids short circuits caused by contact between the magnetic switch and the liquid, reducing its failure rate.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial automation and control engineering, specifically a novel liquid level control device. Background Technology

[0002] Currently, traditional reed float level switches are widely used in actual production. The control method involves immersing the reed switch completely in the liquid, with the magnetic switch fixed inside the reed switch. This control method and design have three drawbacks: (1) If the reed switch is slightly damaged, the liquid will fill its interior, causing the magnetic switch to short-circuit, generating false signals, and causing the controlled system to malfunction; (2) Since the reed float level switch is immersed in the liquid, it is necessary to check whether the reed switch or the magnetic switch inside it is faulty, and it is also necessary to remove them all, which easily increases labor or is inconvenient; (3) The position of the magnetic switch cannot be adjusted, that is, it cannot be adjusted at any time according to the process.

[0003] To address the aforementioned issues, a novel liquid level control device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a novel liquid level control device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel liquid level control device, comprising: a float ball, wherein the density of the float ball is less than the density of the liquid, and the float ball can float up and down with changes in liquid level.

[0006] A limiting device is used to limit the circumferential rotation of the float during its up-and-down floating process.

[0007] A fixed stake extends along a first direction, and the fixed end of the fixed stake is fixed to the liquid storage tank by fasteners, and a magnetic control switch is provided on the fixed stake.

[0008] The long rod consists of a first support rod and a second support rod. The first support rod extends along a first direction, and the extension direction of the second support rod is perpendicular to the first direction. The end of the first support rod away from the liquid surface is fixedly connected to the end of the second support rod away from the fixed pile. The end of the first support rod near the liquid surface is connected to the float, and the end of the second support rod near the fixed pile is fixedly connected to an iron plate. When the float rises to a set position, the iron plate triggers the magnetic switch.

[0009] A fixing device is provided, wherein the end of the limiting device away from the liquid surface is connected to the moving end of the fixing pile via the fixing device.

[0010] Furthermore, the limiting device adopts a float rod, which passes through the float and extends to the outside of the float at both ends, wherein the extension direction of the float rod is a first direction.

[0011] Furthermore, the liquid level control device also includes a connecting device, wherein the end of the float rod away from the liquid surface is connected to the fixed pile via the connecting device.

[0012] Furthermore, the fixed end of the fixed pile is detachable from the outside of the liquid storage tank.

[0013] Furthermore, the fixing device includes a first side plate and a second side plate, the extension direction of the first side plate is perpendicular to the first direction, the end of the float rod away from the liquid surface extends into the first side plate, the extension direction of the second side plate is perpendicular to the second direction, and the second side plate is bolted to the fixing pile; the first side plate and the second side plate are fixedly connected.

[0014] Furthermore, the first side plate and the second side plate are welded together, or the first side plate and the second side plate are integrated into one piece.

[0015] Furthermore, the fastener includes a third side plate and a fourth side plate. The extension direction of the third side plate is perpendicular to the first direction, and it is bolted to the outside of the liquid storage tank. The extension direction of the fourth side plate is perpendicular to the second direction, and it is bolted to the fixed end of the fixed pile. The third side plate and the fourth side plate are fixedly connected.

[0016] Furthermore, the third side plate and the fourth side plate are welded together, or the third side plate and the fourth side plate are integrated into one piece.

[0017] Furthermore, the iron sheet is detachably connected to the second support rod.

[0018] Furthermore, the magnetic switch is a reed switch.

[0019] Furthermore, the long rod is made of a non-magnetic material, the first support rod is detachably connected to the float rod, and the second support rod is detachably connected to the first support rod.

[0020] Analysis shows that this utility model provides a novel liquid level control device, including a float ball, the density of which is less than the density of the liquid, which can float up and down with changes in liquid level to ensure that the float ball always floats on the liquid surface; a limiting device, used to limit the circumferential rotation of the float ball during its up-and-down floating process; the limiting device ensures that the float ball can change with the liquid level without rotating; a fixed post, the fixed post extending along a first direction, the fixed end of the fixed post being fixed to the liquid storage tank by fasteners, and the fixed post being equipped with a magnetic switch; the fixed post fixes the magnetic switch outside the liquid to avoid contact between the magnetic switch and the liquid, thus preventing short circuits, and the fixed post can be adjusted in position according to actual needs by fasteners; and the position of the magnetic switch on the fixed post can be adjusted according to actual needs; a long rod, the long rod being composed of a first support rod and a second support rod, the... The first support rod extends parallel to the first direction, and the second support rod extends perpendicular to the first direction. The end of the first support rod away from the liquid surface is fixedly connected to the end of the second support rod away from the fixed pile. The end of the first support rod near the liquid surface is fixedly connected to the float rod, and the end of the second support rod near the fixed pile is fixedly connected to an iron plate. When the float rises to a set position, the iron plate triggers the magnetic switch. The gap between the iron plate and the magnetic switch is adjusted by changing the length of the first support rod and adjusting the length of the second support rod. A fixing device is used to connect the end of the float rod away from the liquid surface to the moving end of the fixed pile. The fixing device further fixes the limiting device, ensuring that the limiting device will not move along the first direction. In summary, this invention can avoid the magnetic switch from contacting the liquid, causing a short circuit and generating false signals, and reduces inspection costs and effectively extends service life.

[0021] Compared with the closest existing technology, the technical solution provided by this utility model has the following advantages:

[0022] 1) In the current traditional reed switch float level switch, the reed switch is completely immersed in the liquid, and the magnetic switch is fixed inside the reed switch. This utility model fixes the magnetic switch to the outside of the liquid storage tank by fixing it with a fixing stake, and sets a long rod on the upper end of the float and a metal plate on the long rod to isolate the magnetic switch from the outside of the liquid, avoid the magnetic switch from contacting the liquid, and reduce the failure rate.

[0023] 2) In the current traditional reed float level switch, the position of the magnetic switch cannot be adjusted. This utility model fixes the magnetic switch on a fixed stake. By changing the position of the magnetic switch on the fixed stake, as well as adjusting the length of the first and second long rods and the size of the iron plate, the device can be adjusted at any time according to the process equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a novel liquid level control device, which is an example of this utility model.

[0025] In the diagram: 1. Float; 2. Limiting device; 3. Fixing post; 4. First support rod; 5. Second support rod; 6. Iron sheet; 7. Magnetic switch; 8. Connecting device; 9. First side plate; 10. Second side plate; 11. Third side plate; 12. Fourth side plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0030] like Figure 1 As shown, this utility model provides a technical solution: a novel liquid level control device, including a float 1, the density of the float 1 being less than the density of the liquid, and the float 1 being able to float up and down with changes in liquid level.

[0031] The limiting device 2 is used to limit the circumferential rotation of the float 1 during the up-and-down floating process; by setting the limiting device 2, it is ensured that the float 1 will not rotate during the process of sliding on the limiting device 2 as the liquid level rises and falls.

[0032] The fixed pile 3 extends along a first direction, and the fixed end of the fixed pile 3 is fixed to the liquid storage tank by fasteners. The fixed pile 3 is equipped with a magnetic control switch 7. The fixed pile 3 is fixed to the liquid storage tank and its position can be adjusted at any time according to the actual working conditions.

[0033] The long rod consists of a first support rod 4 and a second support rod 5. The first support rod 4 extends along a first direction, and the extension direction of the second support rod 5 is perpendicular to the first direction. The end of the first support rod 4 away from the liquid surface is fixedly connected to the end of the second support rod 5 away from the fixed pile. The end of the first support rod 4 near the liquid surface is connected to the float 1, and the end of the second support rod 5 near the fixed pile is connected to an iron plate 6. When the float 1 rises to a set position, the iron plate 6 triggers the magnetic switch 7.

[0034] Select the first support rod 4 and the second support rod 5 of different specifications according to actual needs to achieve the control of the gap between the iron plate 6 and the magnetic switch 7, as well as the vertical distance between the iron plate 6 and the magnetic switch 7, thereby satisfying the control of the liquid level height to be achieved.

[0035] Furthermore, the position of the magnetic switch 7 on the fixed pile 3 can be adjusted according to different working conditions, thereby adjusting the vertical and horizontal distance between the iron plate 6 and the magnetic switch 7 to improve the applicability of the device.

[0036] A fixing device is provided, wherein the end of the limiting device 2 away from the liquid surface is connected to the moving end of the fixing pile 3 via a fixing device; this ensures that the limiting device 2 can be fixed in the designated position without deviation, and that the limiting device 2 will not move with the rise and fall of the liquid surface, thereby strengthening the connection between the limiting device 2 and the fixing pile 3.

[0037] Preferably, the limiting device 2 is a float rod that passes through the float 1 and extends to the outside of the float at both ends, wherein the extension direction of the float rod is a first direction.

[0038] Using a float rod as the limiting device 2 reduces maintenance costs, facilitates the connection between the float 1 and the float rod, and makes cleaning easier.

[0039] Preferably, the liquid level control device further includes a connecting device 8, wherein the end of the float rod away from the liquid surface is connected to the fixed pile 3 via the connecting device.

[0040] The connection between the limiting device 2 and the fixed pile 3 is further improved by the connecting device 8, thereby improving the stability of the device.

[0041] Preferably, the fixing end of the fixing pile 3 is detachable from the outside of the liquid storage tank. The fixing pile 3 can be fixed to different positions on the outside of the liquid storage tank according to the working conditions. The fixing pile 3 is detachably connected to the liquid storage tank, which facilitates the installation and maintenance of the device and improves the flexibility of the device.

[0042] Preferably, the fixing device includes a first side plate 9 and a second side plate 10. The extension direction of the first side plate 9 is perpendicular to a first direction. The end of the float rod away from the liquid surface extends into the first side plate 9. The extension direction of the second side plate 10 is perpendicular to a second direction. The second side plate 10 is bolted to the fixing pile 3. The first side plate 9 and the second side plate 10 are fixedly connected.

[0043] The limiting device 2 and the fixed pile 3 are connected together by the first side plate 9 and the second side plate 10, which strengthens the connection and stability between the devices. The second side plate 10 and the fixed pile 3 are bolted together, which facilitates the installation and maintenance of the device. If either the fixed pile 3 or the limiting device 2 is damaged, only one part needs to be replaced, which reduces the replacement cost and allows for reuse.

[0044] More preferably, the first side plate 9 and the second side plate 10 are welded together to improve the connectivity between the first side plate 9 and the second side plate 10; or, the first side plate 9 and the second side plate 10 are integrated into one piece to improve the overall integrity of the first side plate 9 and the second side plate 10.

[0045] Preferably, the fastener includes a third side plate 11 and a fourth side plate 12. The extension direction of the third side plate 11 is perpendicular to the first direction, and the third side plate 11 is bolted to the outside of the liquid storage tank. The extension direction of the fourth side plate 12 is perpendicular to the second direction, and the fourth side plate 12 is bolted to the fixed end of the fixing pile 3. The third side plate 11 and the fourth side plate 12 are fixedly connected.

[0046] The fixing pile 3 is fixed to a designated position outside the liquid storage tank by the third side plate 11 and the fourth side plate 12, and the fourth side plate 12 and the fixing pile 3 are bolted together, which makes it easy to adjust the position of the fixing pile 3 outside the liquid storage tank. When the fixing pile 3 needs to be maintained or replaced, the bolts can be loosened to replace and maintain the fixing pile 3.

[0047] More preferably, the third side plate 11 and the fourth side plate 12 are welded together to improve the connectivity between the third side plate 11 and the fourth side plate 12; or, the third side plate 11 and the fourth side plate 12 are integrated into one piece to improve the overall integrity between the third side plate 11 and the fourth side plate 12.

[0048] Preferably, the iron sheet 6 is detachably connected to the second support rod 5, so that different specifications of iron sheet 6 can be selected for different working conditions to meet the gap requirements between the iron sheet 6 and the magnetic switch 7.

[0049] Preferably, the magnetic switch 7 is a reed switch, the purpose of which is to improve the reliability of the device. Reed switches have a fast response speed, higher sensitivity, small size, and low cost.

[0050] Preferably, the long rod is made of a non-magnetic material to avoid the magnetic control switch being affected by the magnetism of the long rod, resulting in false touches and false signals; the first support rod 4 is detachably connected to the float rod, and the second support rod 5 is detachably connected to the first support rod 4, so that the specifications of the first support rod 4 and the second support rod 5 can be selected at any time when the gap between the iron plate 6 and the magnetic control switch 7 needs to be adjusted under different working conditions.

[0051] The working process of using this device to control the liquid level in the storage tank is as follows:

[0052] In the preparation stage, the fixing pile 3 is connected to the limiting device 2 through the fixing device, and further fixed through the connecting device 8. Then, the fixing pile 3 is fixed to the designated position outside the liquid storage tank with fasteners. The float 1 is inserted through the limiting device 2 to ensure that the float 1 can move up and down with the liquid level. The magnetic switch 7 is installed at the designated position of the fixing pile 3. The connecting support rod is installed at the upper end of the float 1. The first support rod 4 and the second support rod 5 of the required length are installed according to the working conditions. The iron plate 6 is installed on the second support rod 5 and adjusted. The length of the long rod and the gap distance when the iron plate 6 reaches the same horizontal position as the magnetic control switch 7 ensure that the magnetic control switch 7 will activate when the iron plate 6 reaches the same horizontal position as the magnetic control switch 7. During the working stage, as the liquid level rises, the float 1 slides up and down on the limiting device 2, which drives the support rod at the upper end of the float 1 to move up and down, thereby driving the iron plate 6 to move up and down. When the iron plate 6 and the magnetic control switch 7 are at the same horizontal plane, the iron plate 6 triggers the magnetic control switch 7 to send a signal, controlling the water pump to make corresponding actions, thereby controlling the rise and fall of the liquid level.

[0053] In summary, this utility model achieves the following technical effects:

[0054] 1) The current control method for reed switch float level control switches involves the reed switch being completely immersed in the liquid, while the magnetic switch is fixed inside the reed switch. This invention provides a novel level control device with a reasonable and simple structure. By fixing the magnetic switch 7 to the fixing stake 3 and setting a support rod to fix the iron plate 6 at the upper end of the float 1, when the float 1 rises to the set position, the iron plate 6 triggers the magnetic switch 7. The two work together to control the liquid level, avoiding the magnetic switch 7 being directly immersed in the liquid, which could cause a short circuit and generate false signals, leading to erroneous actions in the subsequent control system, thus improving the accuracy of the device in the level control process.

[0055] 2) By connecting the limiting device 2 and the fixed pile 3 through a fixing device, it is ensured that the float 1 can maintain sliding in the up and down direction when the liquid level changes, without causing positional deviation. The limiting device 2 is used to limit the circumferential rotation of the float 1 during the up and down floating process; to avoid the float 1 not rotating, which would cause errors in the subsequent magnetic control process; and to improve the stability of the device.

[0056] 3) By using fasteners to disassemble and install the fixed pile 3, it is ensured that the fixed pile 3 can be changed in position at any time according to the actual working conditions, and the position of the fixed pile 3 can be adjusted by the magnetic control switch 7, thereby improving the flexibility of the device and enhancing its applicability to different working conditions.

[0057] 4) The connecting device 8 further ensures that there will be no displacement or deviation between the limiting device 2 and the fixing device, and ensures that the gap between the fixed iron plate 6 and the magnetic control switch 7 will not change, thus ensuring the stability of the device.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel liquid level control device characterized in that, include: A float, the density of which is less than that of the liquid, is able to float up and down with changes in the liquid level; A limiting device is used to limit the circumferential rotation of the float during the up-and-down floating process; A fixed stake extends along a first direction, and the fixed end of the fixed stake is fixed to the liquid storage tank by fasteners, and a magnetic switch is provided on the fixed stake; The long rod consists of a first support rod and a second support rod. The first support rod extends along a first direction, and the extension direction of the second support rod is perpendicular to the first direction. The end of the first support rod away from the liquid surface is fixedly connected to the end of the second support rod away from the fixed pile. The end of the first support rod near the liquid surface is connected to the float. The end of the second support rod near the fixed pile is fixedly connected to an iron plate. When the float rises to a set position, the iron plate triggers the magnetic switch. A fixing device is provided, wherein the end of the limiting device away from the liquid surface is connected to the moving end of the fixing pile via the fixing device.

2. The liquid level control device according to claim 1, characterized in that The limiting device uses a float rod that passes through the float and extends to the outside of the float at both ends, wherein the extension direction of the float rod is a first direction.

3. The liquid level control device of claim 1, wherein It also includes a connecting device, wherein the end of the float rod away from the liquid surface is connected to the fixed pile via the connecting device.

4. The liquid level control device of claim 1, wherein The fixed end of the fixed pile is detachable from the outside of the liquid storage tank.

5. The liquid level control device of claim 1, wherein The fixing device includes a first side plate and a second side plate. The extension direction of the first side plate is perpendicular to a first direction. The end of the float rod away from the liquid surface extends into the first side plate. The extension direction of the second side plate is perpendicular to a second direction. The second side plate is bolted to the fixing pile. The first side plate and the second side plate are fixedly connected.

6. The liquid level control device of claim 5, wherein The first side plate and the second side plate are welded together, or the first side plate and the second side plate are integrated into one piece.

7. The liquid level control device of claim 1, wherein The fastener includes a third side plate and a fourth side plate. The extension direction of the third side plate is perpendicular to the first direction. The third side plate is bolted to the outside of the liquid storage tank. The extension direction of the fourth side plate is perpendicular to the second direction. The fourth side plate is bolted to the fixed end of the fixed pile. The third side plate and the fourth side plate are fixedly connected.

8. The liquid level control device of claim 7, wherein The third side plate and the fourth side plate are welded together, or the third side plate and the fourth side plate are integrated into one piece.

9. The liquid level control device of claim 1, wherein, The iron sheet is detachably connected to the support rod.

10. The liquid level control device of claim 1, wherein The magnetic switch uses a reed switch.

11. The liquid level control device of claim 1, wherein The long rod is made of non-magnetic material, and the first support rod is detachably connected to the float rod, and the second support rod is detachably connected to the first support rod.

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