Liquid level sensor

Abstract

The utility model relates to the technical field of liquid level sensors, and discloses a liquid level sensor which comprises a liquid level sensor probe, a probe wire is arranged on the liquid level sensor probe, a movable sleeve is arranged on the probe wire, a mounting ring is detachably connected to the bottom end of the movable sleeve, and the probe wire is connected with the mounting ring. A mounting ring is rotatably sleeved with a cleaning sleeve, a plurality of cleaning plates are arranged in the cleaning sleeve in a surrounding mode, a plurality of sliding grooves in sliding connection with plate bodies of the cleaning plates are formed in the inner wall of the cleaning sleeve in a surrounding mode, and the movable sleeve can be moved to cover a liquid level sensor probe; and then the cleaning sleeve is rotated to drive the cleaning plate to rotate to clean the outer surface wall of the liquid level sensor probe, the mounting ring can be detached from the bottom end of the movable sleeve by rotating the mounting ring, then the cleaning plate is taken down for cleaning and replacement through cooperation of the plate body and the sliding groove, and the cleaning device is simple and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a liquid level sensor. Background Art

[0002] The liquid level sensor is a pressure sensor that measures the liquid level. It is suitable for measuring the liquid level of various media in systems and industries such as petrochemicals, metallurgy, electricity, pharmaceuticals, water supply and drainage, and environmental protection.

[0003] Some liquid level sensors currently on the market: for example, the utility model patent with authorization announcement number CN219434167U discloses a contact liquid level sensor. When the liquid level sensor probe is taken out from the sample, the movable sleeve and the positioning sleeve are unscrewed, the movable sleeve is brought close, and an elastic clamp is used to clamp the outer side of the contact liquid level sensor probe. The contact liquid level sensor probe can be safely taken out from the sample. During this process, the personnel do not need to directly contact the surface wall of the contact liquid level sensor probe. However, after the liquid level sensor cleans the outer surface wall of the liquid level sensor probe through the elastic clamp inside the movable sleeve, the elastic clamp cannot be removed from the movable sleeve for cleaning and replacement. The corrosive solution accumulated on the elastic clamp can easily accelerate the corrosion and aging of the elastic clamp. When the elastic clamp with residual corrosive solution contacts the probe, the corrosive solution may be transferred to the probe, causing secondary pollution.

[0004] So we proposed a liquid level sensor to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that some current liquid level sensors cannot remove the elastic clamping ring from the movable sleeve for cleaning and replacement after the outer wall of the liquid level sensor probe is cleaned by the elastic clamping ring inside the movable sleeve, and the corrosive solution accumulated on the elastic clamping ring is likely to accelerate the corrosion and aging of the elastic clamping ring, and when the elastic clamping ring with the corrosive solution remaining contacts the probe, the corrosive solution may be transferred to the probe, causing secondary pollution.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid level sensor comprises a liquid level sensor probe, a probe wire is arranged on the liquid level sensor probe, a movable sleeve is arranged on the probe wire, the bottom end of the movable sleeve is arranged as an open structure, and a connecting ring is arranged on the top of the movable sleeve, the connecting ring is symmetrically provided with a clamping and fixing mechanism, the bottom end of the movable sleeve is detachably connected with a mounting ring, a first rotating pinching plate is arranged on the outer ring surface of the mounting ring near the bottom, and a cleaning sleeve is rotatably sleeved on the mounting ring, a plurality of cleaning plates are arranged around the cleaning sleeve, and a limiting ring is arranged on the outer surface of the cleaning sleeve near the bottom, an annular groove is provided on the inner ring surface of the mounting ring and is rotatably connected to the limiting ring, a plurality of second rotating pinching plates are arranged at the bottom end of the cleaning sleeve, the cleaning plate comprises a plate body, an elastic cleaning block is arranged on the side of the plate body, a plurality of sliding grooves are arranged around the inner wall of the cleaning sleeve, and the sliding grooves are slidably connected to the plate body.

[0007] Furthermore, the clamping and fixing mechanism includes a mechanism box and an arc plate, the mechanism box is fixed on the outer surface of the connecting ring, the arc plate is located on the inner side of the connecting ring, single-sided toothed plates and gears are symmetrically arranged in the mechanism box, the two single-sided toothed plates are respectively meshed with two gears, a double-sided toothed plate is meshed between the two gears, a connecting column is connected between the arc plate and the single-sided toothed plate, a compression spring is sleeved on the connecting column, one end of the compression spring is in contact with the arc plate, and the other end of the compression spring is in contact with the inner ring surface of the connecting ring, a fixing column is connected in the mechanism box, the gear is rotatably connected to the fixing column, one end of the double-sided toothed plate is connected to a push rod, and a push plate fixed to the push rod is arranged on the outside of the mechanism box.

[0008] Furthermore, the plate body is symmetrically connected to limit plates on both sides, and the inner side wall of the slide groove is symmetrically provided with limit grooves which are slidably connected to the limit plates.

[0009] Furthermore, an anti-slip pad is provided on the inner curved surface of the curved plate.

[0010] Furthermore, the anti-skid pad and the elastic cleaning block are both made of corrosion-resistant nitrile rubber.

[0011] Furthermore, an internal thread is provided on the inner wall of the movable sleeve near the bottom, and an external thread is provided on the outer surface of the mounting ring near the top, and the external thread is matched with the internal thread.

[0012] The beneficial effects of the utility model are as follows: a movable sleeve is provided on the probe wire, a mounting ring is detachably connected to the bottom end of the movable sleeve, a cleaning sleeve is rotatably sleeved on the mounting ring, a plurality of cleaning plates are arranged around the cleaning sleeve, and a plurality of slide grooves are provided around the inner wall of the cleaning sleeve to be slidably connected to the plate body of the cleaning plate. The movable sleeve can be moved to cover the liquid level sensor probe, and then the cleaning sleeve can be rotated to drive the cleaning plate to rotate to clean the outer wall of the liquid level sensor probe. The mounting ring can be rotated to be removed from the bottom end of the movable sleeve, and then the cleaning plate can be removed for cleaning and replacement through the cooperation of the plate body and the slide groove, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a first structural schematic diagram of the liquid level sensor of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the liquid level sensor of the utility model;

[0015] Figure 3 This is a second structural schematic diagram of the liquid level sensor of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the pressing and fixing mechanism of the liquid level sensor of the utility model;

[0017] Figure 5 This is a schematic diagram of the first part of the structure of the liquid level sensor of the utility model;

[0018] Figure 6 This is a schematic diagram of the second part of the structure of the liquid level sensor of the utility model;

[0019] Figure 7 It is a schematic diagram of the cleaning plate structure of the utility model liquid level sensor.

[0020] The names corresponding to the marks in the figure are:

[0021] 1. Liquid level sensor probe; 2. Probe wire; 3. Movable sleeve; 4. Connecting ring; 5. Pressing and fixing mechanism; 51. Mechanism box; 52. Arc plate; 53. Single-sided tooth plate; 54. Gear; 55. Double-sided tooth plate; 56. Connecting column; 57. Compression spring; 58. Fixed column; 59. Push rod; 60. Push plate; 6. Mounting ring; 7. First rotating pinching plate; 8. Cleaning sleeve; 9. Cleaning plate; 91. Plate body; 92. Elastic cleaning block; 93. Limiting plate; 10. Limiting ring; 11. Second rotating pinching plate; 12. Anti-slip pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Embodiments of the present utility model:

[0024] Embodiment 1

[0025] like Figure 1-Figure 7 As shown, the utility model provides a liquid level sensor, including a liquid level sensor probe 1, a probe wire 2 is arranged on the liquid level sensor probe 1, a movable sleeve 3 is arranged on the probe wire 2, the bottom end of the movable sleeve 3 is arranged as an open structure, and a connecting ring 4 is arranged on the top of the movable sleeve 3, the connecting ring 4 is symmetrically provided with a clamping and fixing mechanism 5, the bottom end of the movable sleeve 3 is detachably connected with a mounting ring 6, a first rotating pinching plate 7 is arranged near the bottom of the outer ring surface of the mounting ring 6, and a cleaning sleeve 8 is rotatably sleeved on the mounting ring 6, a plurality of cleaning plates 9 are arranged around the cleaning sleeve 8, and a limiting ring 10 is arranged near the bottom of the outer surface of the cleaning sleeve 8, an annular groove rotatably connected to the limiting ring 10 is opened on the inner ring surface of the mounting ring 6, a plurality of second rotating pinching plates 11 are arranged at the bottom end of the cleaning sleeve 8, the cleaning plate 9 includes a plate body 91, an elastic cleaning block 92 is arranged on the side of the plate body 91, a plurality of slide grooves are opened around the inner wall of the cleaning sleeve 8, and the slide grooves It is slidably connected to the plate body 91, and limit plates 93 are symmetrically connected to both sides of the plate body 91. Limit grooves slidably connected to the limit plates 93 are symmetrically provided on the inner side wall of the slide groove. An internal thread is provided on the inner wall of the movable sleeve 3 near the bottom, and an external thread is provided on the outer ring surface of the mounting ring 6 near the top. The external thread is adapted to the internal thread. The movable sleeve 3 on the probe wire 2 can be first moved to the liquid level sensor probe 1 and covered on the liquid level sensor probe 1, so that the cleaning plate 9 contacts the liquid level sensor probe 1, and then the second rotating pinching plate 11 is rotated to drive the cleaning sleeve 8 and the cleaning plate 9 to rotate, and the corrosive solution on the outer wall of the liquid level sensor probe 1 is cleaned by the elastic cleaning block 92, and the first rotating pinching plate 7 can be rotated to drive the mounting ring 6 to rotate. The mounting ring 6 can be removed by the cooperation of the external thread and the internal thread, and then the cleaning plate 9 can be taken out from the slide groove and the limit groove for cleaning and replacement.

[0026] Embodiment 2

[0027] like Figure 1-Figure 7As shown, on the basis of the first embodiment of the utility model: the clamping and fixing mechanism 5 includes a mechanism box 51 and an arc plate 52, the mechanism box 51 is fixed on the outer surface of the connecting ring 4, the arc plate 52 is located on the inner side of the connecting ring 4, and the mechanism box 51 is symmetrically provided with a single-sided toothed plate 53 and a gear 54, the two single-sided toothed plates 53 are respectively meshed with the two gears 54, and a double-sided toothed plate 55 is meshed between the two gears 54, a connecting column 56 is connected between the arc plate 52 and the single-sided toothed plate 53, and a compression spring 57 is sleeved on the connecting column 56, one end of the compression spring 57 is in contact with the arc plate 52, and the other end of the compression spring 57 is in contact with the inner ring surface of the connecting ring 4, a fixing column 58 is connected to the mechanism box 51, and the gear 54 rotates with the fixing column 58 The double-sided toothed plate 55 is connected with a push rod 59 at one end, and a push plate 60 fixed to the push rod 59 is arranged on the outer side of the mechanism box 51. An anti-skid pad 12 is arranged on the inner curved surface of the arc plate 52. The anti-skid pad 12 and the elastic cleaning block 92 are both made of corrosion-resistant nitrile rubber. Through such a setting, when it is necessary to move the movable sleeve 3, it is only necessary to press the push plate 60 to move the double-sided toothed plate 55, drive the gear 54 to rotate, and move the single-sided toothed plate 53, thereby driving the arc plate 52 to move, and release the fixation to move the movable sleeve 3. After the movement is completed, it is only necessary to release the push plate 60, and the arc plate 52 will be reset under the action of the compression spring 57 and fixed in cooperation with the probe wire 2.

Claims

1. A liquid level sensor, comprising a liquid level sensor probe (1), wherein a probe wire (2) is arranged on the liquid level sensor probe (1), characterized in that: The probe wire (2) is provided with a movable sleeve (3), the bottom end of the movable sleeve (3) is set as an open structure, and the top end of the movable sleeve (3) is provided with a connecting ring (4), and the connecting ring (4) is symmetrically provided with a clamping and fixing mechanism (5). The bottom end of the movable sleeve (3) is detachably connected with a mounting ring (6), and a first rotating pinching plate (7) is provided at a position near the bottom of the outer ring surface of the mounting ring (6), and a cleaning sleeve (8) is rotatably sleeved on the mounting ring (6), and a cleaning sleeve (8) is provided around the cleaning sleeve (8). There are a plurality of cleaning plates (9), and a limit ring (10) is arranged on the outer surface of the cleaning sleeve (8) near the bottom, and an annular groove is provided on the inner ring surface of the mounting ring (6) and is rotatably connected to the limit ring (10). A plurality of second rotatable pinching plates (11) are arranged at the bottom end of the cleaning sleeve (8). The cleaning plate (9) comprises a plate body (91), and an elastic cleaning block (92) is arranged on the side of the plate body (91). A plurality of sliding grooves are arranged around the inner wall of the cleaning sleeve (8), and the sliding grooves are slidably connected to the plate body (91).

2. A liquid level sensor according to claim 1, characterized in that: The pressing and fixing mechanism (5) comprises a mechanism box (51) and an arc-shaped plate (52), wherein the mechanism box (51) is fixed on the outer surface of the connecting ring (4), the arc-shaped plate (52) is located on the inner side of the connecting ring (4), and single-sided toothed plates (53) and gears (54) are symmetrically arranged in the mechanism box (51), the two single-sided toothed plates (53) are respectively meshed with the two gears (54), a double-sided toothed plate (55) is meshed between the two gears (54), and a double-sided toothed plate (55) is connected between the arc-shaped plate (52) and the single-sided toothed plate (53). A connecting column (56) is provided with a compression spring (57), one end of the compression spring (57) contacts the arc plate (52), and the other end of the compression spring (57) contacts the inner ring surface of the connecting ring (4); a fixed column (58) is connected inside the mechanism box (51); the gear (54) is rotatably connected to the fixed column (58); one end of the double-sided toothed plate (55) is connected to a push rod (59); and a push plate (60) fixed to the push rod (59) is provided on the outer side of the mechanism box (51).

3. A liquid level sensor according to claim 1, characterized in that: The plate body (91) is symmetrically connected to limit plates (93) on both sides, and the inner side wall of the slide groove is symmetrically provided with limit grooves slidably connected to the limit plates (93).

4. A liquid level sensor according to claim 2, characterized in that: An anti-slip pad (12) is provided on the inner curved surface of the curved plate (52).

5. A liquid level sensor according to claim 4, characterized in that: The anti-skid pad (12) and the elastic cleaning block (92) are both made of corrosion-resistant nitrile rubber.

6. A liquid level sensor according to claim 1, characterized in that: An internal thread is provided on the inner wall of the movable sleeve (3) near the bottom, and an external thread is provided on the outer ring surface of the mounting ring (6) near the top, wherein the external thread is matched with the internal thread.

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