Externally-hung water level monitoring device

Abstract

The utility model relates to the technical field of water level monitoring, and discloses an externally-hung water level monitoring device. The externally-hung water level monitoring device comprises a supporting frame, a connecting frame is fixedly installed at the left end of the supporting frame, a guide wheel is movably installed in the connecting frame, a bearing plate is fixedly installed above the supporting frame, a supporting plate is fixedly installed above the bearing plate, a bearing is fixedly installed in the center of the supporting plate, and the bearing is fixedly installed on the supporting plate. A driving shaft is installed in the bearing in a penetrating mode, the movable pipe, the driving pipe and the driving shaft are driven to rotate through the traction rope till the bottom of the floating box makes contact with the water surface, and when the buoyancy borne by the floating box counteracts the gravity of the floating box, the floating box cannot drive the traction rope to continue to move; the surface of the pulling rope is coated with white paint at the interval of one meter to indicate the descending length of the pulling rope, so that the distance between the floating box and the supporting frame is displayed, the water level change is displayed, and the effect of monitoring the liquid level change at low cost is achieved.

Description

Technical Field

[0001] This utility model relates to the field of water level monitoring technology, specifically to an external water level monitoring device. Background Technology

[0002] Accurate water level monitoring is crucial in many fields such as water conservancy projects, sewage treatment, and industrial water storage. There are various existing water level monitoring methods, such as contact float level gauges, submersible level transmitters, and non-contact radar level gauges.

[0003] A relevant reference is Chinese utility model patent CN220104241U, which discloses a water level monitoring device, including a base, a measuring component, and a control component. The base is a U-shaped frame with a sliding plate slidably mounted on its inner side. The measuring component includes a drive mechanism disposed on the upper surface of the base, used to extend and retract a measuring rope. One end of the measuring rope passes through the sliding plate and is connected to a probe. The control component includes a hollow cylinder and a float plate that can move up and down along the hollow cylinder. The hollow cylinder is detachably mounted on the lower surface of the sliding plate or on the wall of an underground well. The float plate has metal contacts. The measuring rope can drive the probe to move up and down within the hollow cylinder to abut against and electrically connect with the metal contacts. Both the probe and the metal contacts are electrically connected in series with the drive mechanism. This solution can improve the convenience and accuracy of water level monitoring.

[0004] Submersible level transmitters are constantly immersed in water, making the sensors susceptible to corrosion and resulting in high maintenance costs. While radar level gauges offer high accuracy, they are expensive and require strict installation and commissioning procedures. For applications with lower accuracy requirements, existing level monitoring devices suffer from high costs and difficult maintenance. Furthermore, existing external level monitoring devices typically connect to a float via a traction rope, displaying level changes based on the length of the traction rope's descent. Currently, elastic structures such as springs at the rear of the traction rope retract as the liquid level rises. However, this method can lead to the float being unable to contact the water surface when the elastic structure reaches its elongation limit, resulting in a suspended state and limited monitoring range. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, this utility model provides an external water level monitoring device, which has the advantages of easy installation, low cost and expanded monitoring range, thus solving the above-mentioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an external water level monitoring device, comprising: a support frame, a connecting frame fixedly installed at the left end of the support frame, a guide wheel movably installed inside the connecting frame, a receiving plate fixedly installed above the support frame, a support plate fixedly installed above the receiving plate, a bearing fixedly installed at the center of the support plate, a drive shaft inserted inside the bearing, a drive tube inserted outside the drive shaft, a movable tube movably installed outside the drive tube, a limit bolt inserted at the center of the movable tube, a positioning pin inserted at the outer edge of the movable tube, a torsion spring fixedly installed at the rear end of the drive shaft, a protective shell fitted around the outside of the torsion spring, a traction rope wound around the outside of the movable tube, and a float fixedly installed at one end of the traction rope; the bearing facilitates the rotation of the drive shaft.

[0009] As a preferred technical solution of this utility model, the four corners of the bottom of the support frame are provided with openings for bolt installation, the guide wheel and the connecting frame are rotatably connected, and the support plate is symmetrically installed on the front and rear sides of the drive shaft with the center of the drive tube as the reference; the support frame can support the receiving plate.

[0010] As a preferred embodiment of this utility model, the drive shaft is rotatably connected to the support plate via a bearing, and the drive tube is rotatably connected to the movable tube; the support plate can limit the position of the drive shaft.

[0011] As a preferred embodiment of this utility model, the drive tube and the drive shaft are fixedly connected, and the outer sides of the drive tube and the movable tube are provided with a wave-shaped structure. The positioning pin passes through both the drive tube and the movable tube. The movable tube facilitates the winding of the traction rope.

[0012] As a preferred embodiment of this utility model, the rear end of the drive shaft is provided with a groove that fits into the center of the torsion spring, the inner end of the torsion spring fits into the right end of the drive shaft, and the protective shell is fixedly connected to the rear support plate by bolts; the drive shaft can drive the torsion spring to rotate.

[0013] As a preferred embodiment of this utility model, the inner wall of the protective shell is provided with a notch that fits into the outer end of the torsion spring, and the notch is distributed in a ring shape. The outer end of the torsion spring is fitted into the interior of the protective shell. The protective shell can restrict the position of the outer end of the torsion spring.

[0014] As a preferred embodiment of this utility model, one end of the traction rope is tied to the outside of the limiting bolt by a knot, the traction rope is wrapped around the outside of the movable tube, and the traction rope is fitted into the central groove of the guide wheel; the traction rope can easily display the distance between the water surface and the support frame.

[0015] Compared with the prior art, this utility model provides an external water level monitoring device, which has the following beneficial effects:

[0016] 1. This utility model uses a traction rope. One end of the traction rope is wrapped around the outside of the movable tube, and the other end is connected to the float. When the lower end of the float is not in contact with the water surface, the traction rope will drive the movable tube, drive tube, and drive shaft to rotate until the bottom of the float contacts the water surface. When the buoyancy of the float cancels out its own weight, the float will be unable to drive the traction rope to continue moving. The length of the traction rope is indicated by white paint applied at one-meter intervals on the surface of the traction rope, thereby showing the distance between the float and the support frame and thus the water level change. Furthermore, the support frame only needs to be fixed to the upper side wall of the water body through the opening structure at the bottom of the support frame and bolts, and the guide wheel should be located directly above the water body, thereby achieving the effect of monitoring liquid level changes at a low cost.

[0017] 2. This utility model utilizes a torsion spring. The inner wall of the protective shell has a notch that fits into the outer end of the torsion spring, and the notch is arranged in a ring. The outer end of the torsion spring fits into the interior of the protective shell. The rear end of the drive shaft is connected to the inner end of the torsion spring. The rear end of the drive shaft has a groove that fits into the center of the torsion spring. The inner end of the torsion spring fits into the right end of the drive shaft. During the descent of the float, the drive shaft will rotate the inner end of the torsion spring, while the outer end of the torsion spring fits into the inner wall of the protective shell. This allows the torsion spring to rotate and store energy when the float descends. When the float rises to the surface, the torsion spring can drive the drive shaft and drive tube to rotate, thereby winding up the traction rope. This method can wind up a sufficient length of traction rope by winding to expand the detection range. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support plate installation structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the torsion spring mounting structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the traction rope installation structure of this utility model;

[0022] The components are: 1. Support frame; 11. Connecting frame; 12. Guide wheel; 13. Receiving plate; 14. Support plate; 15. Bearing; 16. Drive shaft; 17. Drive tube; 18. Movable tube; 19. Limit bolt; 110. Positioning pin; 111. Torsion spring; 112. Protective shell; 113. Traction rope; 114. Float box. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4 In this embodiment, an external water level monitoring device includes: a support frame 1, a connecting frame 11 fixedly installed at the left end of the support frame 1, a guide wheel 12 movably installed inside the connecting frame 11, a receiving plate 13 fixedly installed above the support frame 1, a support plate 14 fixedly installed above the receiving plate 13, a bearing 15 fixedly installed at the center of the support plate 14, a drive shaft 16 inserted inside the bearing 15, a drive tube 17 inserted outside the drive shaft 16, a movable tube 18 movably installed outside the drive tube 17, a limit bolt 19 inserted at the center of the movable tube 18, a positioning pin 110 inserted at the outer edge of the movable tube 18, a torsion spring 111 fixedly installed at the rear end of the drive shaft 16, a protective shell 112 fitted onto the outer side of the torsion spring 111, a traction rope 113 wound around the outer side of the movable tube 18, and a float box 114 fixedly installed at one end of the traction rope 113.

[0027] The support frame 1 has four openings at its bottom corners for bolt installation. The guide wheel 12 and the connecting frame 11 are rotatably connected. The support plate 14 is symmetrically mounted on the front and rear sides of the drive shaft 16 with the center of the drive tube 17 as the reference. The drive shaft 16 is rotatably connected to the support plate 14 via the bearing 15. The drive tube 17 and the movable tube 18 are rotatably connected, and the drive tube 17 and the drive shaft 16 are fixedly connected. The outer sides of the drive tube 17 and the movable tube 18 have a wave-shaped structure. The positioning pin 110 passes through both the drive tube 17 and the movable tube 18. The rear end of 6 is provided with a groove that fits into the center of the torsion spring 111. The inner end of the torsion spring 111 fits into the right end of the drive shaft 16. The protective shell 112 is fixedly connected to the rear support plate 14 by bolts. The inner wall of the protective shell 112 is provided with a notch that fits into the outer end of the torsion spring 111, and the notch is distributed in a ring. The outer end of the torsion spring 111 fits into the inside of the protective shell 112. One end of the traction rope 113 is tied to the outside of the limiting bolt 19 by a knot. The traction rope 113 is wrapped around the outside of the movable tube 18, and the traction rope 113 fits into the central groove of the guide wheel 12.

[0028] Specifically, the support frame 1 restricts the position of the receiving plate 13, the guide wheel 12 is rotatably connected to the connecting frame 11, and the connecting frame 11 is fixedly connected to the support frame 1, thus allowing the guide wheel 12 to rotate while restricting its position. The support plate 14 is fixed by the receiving plate 13 to restrict the position of the central drive shaft 16 of the support plate 14. The bearing 15 facilitates the rotation of the drive shaft 16. The positioning pin 110 restricts the rotation angle between the drive tube 17 and the movable tube 18. After removing the positioning pin 110, the movable tube 18 can rotate freely to facilitate the winding of the traction rope 113. After the traction rope 113 is wound around the outside of the movable tube 18, the movable tube 18 and the drive tube 17 are connected by the positioning pin 110. After the rope 113 is lowered into the float 114, the weight of the float 114 will drive the movable tube 18 and the drive tube 17 to rotate. The drive tube 17 is fixedly connected to the drive shaft 16. The rear end of the drive shaft 16 is connected to the inner end of the torsion spring 111. During the descent of the float 114, the drive shaft 16 will be driven to rotate the inner end of the torsion spring 111. The outer end of the torsion spring 111 is fitted into the inner wall of the protective shell 112 so that the torsion spring 111 can rotate and store energy when the float 114 falls. When the float 114 rises, the torsion spring 111 can drive the drive shaft 16 and the drive tube 17 to rotate, thereby winding up the traction rope 113. The length of the traction rope 113 is indicated by applying white paint at one-meter intervals on the surface of the traction rope 113.

[0029] In use, one end of the traction rope 113 is wrapped around the outside of the movable tube 18, and the other end is connected to the float box 114. When the lower end of the float box 114 is not in contact with the water surface, the traction rope 113 will drive the movable tube 18, drive tube 17, and drive shaft 16 to rotate until the bottom of the float box 114 contacts the water surface. When the buoyancy of the float box 114 cancels out its own weight, the float box 114 will no longer be able to drive the traction rope 113 to continue moving. The length of the traction rope 113 is indicated by white paint applied at one-meter intervals on the surface of the traction rope 113, thereby showing the distance between the float box 114 and the support frame 1, and thus indicating the water level change. The support frame 1 is fixed to the upper side wall of the water body only by the opening structure at the bottom of the support frame 1 and the bolts, and the guide wheel 12 is positioned directly above the water body. The inner wall of the protective shell 112 is provided with a torsion spring 11. The outer end of the torsion spring 111 is fitted into the interior of the protective shell 112. The rear end of the drive shaft 16 is connected to the inner end of the torsion spring 111. The rear end of the drive shaft 16 is provided with a groove that fits into the center of the torsion spring 111. The inner end of the torsion spring 111 is fitted into the right end of the drive shaft 16. During the descent of the float box 114, the drive shaft 16 will be driven to rotate the inner end of the torsion spring 111, while the outer end of the torsion spring 111 is fitted into the inner wall of the protective shell 112. This allows the torsion spring 111 to rotate and store energy when the float box 114 falls. When the float box 114 rises, the torsion spring 111 can drive the drive shaft 16 and the drive tube 17 to rotate, thereby winding up the traction rope 113. This method can wind up a sufficient length of traction rope 113 by winding, thereby expanding the detection range.

[0030] 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. An external water level monitoring device, characterized in that, include: A support frame (1) is provided, with a connecting frame (11) fixedly installed at its left end. A guide wheel (12) is movably installed inside the connecting frame (11). A receiving plate (13) is fixedly installed above the support frame (1), and a support plate (14) is fixedly installed above the receiving plate (13). A bearing (15) is fixedly installed at the center of the support plate (14). A drive shaft (16) is inserted inside the bearing (15), and a drive tube (17) is inserted outside the drive shaft (16). A movable tube (18) is movably installed on the outside of the drive tube (17). A limit bolt (19) is inserted through the center of the movable tube (18). A positioning pin (110) is inserted through the outer edge of the movable tube (18). A torsion spring (111) is fixedly installed at the rear end of the drive shaft (16). A protective shell (112) is fitted on the outside of the torsion spring (111). A traction rope (113) is wound around the outside of the movable tube (18). A float box (114) is fixedly installed at one end of the traction rope (113).

2. The external water level monitoring device according to claim 1, characterized in that: The support frame (1) has four corner openings for bolt installation at its bottom. The guide wheel (12) and the connecting frame (11) are rotatably connected. The support plate (14) is symmetrically installed on the front and rear sides of the drive shaft (16) with the center of the drive tube (17) as the reference.

3. The external water level monitoring device according to claim 1, characterized in that: The drive shaft (16) is rotatably connected to the support plate (14) via a bearing (15), and the drive tube (17) is rotatably connected to the movable tube (18).

4. The external water level monitoring device according to claim 1, characterized in that: The drive tube (17) and the drive shaft (16) are fixedly connected. The drive tube (17) and the movable tube (18) are provided with a wave-shaped structure on their outer sides. The positioning pin (110) passes through both the drive tube (17) and the movable tube (18).

5. The external water level monitoring device according to claim 1, characterized in that: The rear end of the drive shaft (16) is provided with a groove that fits into the center of the torsion spring (111). The inner end of the torsion spring (111) fits into the right end of the drive shaft (16). The protective shell (112) is fixedly connected to the rear support plate (14) by bolts.

6. The external water level monitoring device according to claim 1, characterized in that: The inner wall of the protective shell (112) is provided with a notch that fits into the outer end of the torsion spring (111), and the notch is distributed in a ring shape. The outer end of the torsion spring (111) fits into the interior of the protective shell (112).

7. The external water level monitoring device according to claim 1, characterized in that: One end of the traction rope (113) is tied to the outside of the limiting bolt (19) by a knot. The traction rope (113) is wrapped around the outside of the movable tube (18), and the traction rope (113) is fitted into the central groove of the guide wheel (12).

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