An oil level sensor with good sealing

Abstract

The utility model relates to oil level sensor technical field, especially in kind of oil level sensor that good sealing, including sensor pipe body and the detachable activity filter sleeve that sensor pipe body bottom end has, sensor pipe body bottom end is equipped with a plurality of oil inlet hole, the chamber is equipped with in activity filter sleeve, the threaded sleeve ring that activity filter sleeve is located chamber opening outer edge place extends upwards and is equipped with, first sealing groove is opened in threaded sleeve ring inner wall, first sealing ring is embedded in first sealing groove, the inside of first sealing ring can be tightly combined with sensor pipe body outer surface, the movable fastening screw ring that can be connected with threaded sleeve ring threaded connection is movably sleeved on sensor pipe body, the utility model has the advantages of providing one kind of oil level sensor that good sealing improves sealing property and improves filtering effect.

Description

Technical Field

[0001] This utility model relates to the field of oil level sensor technology, and specifically to an oil level sensor with good sealing performance. Background Technology

[0002] An oil level sensor is a component that detects the position (height) of oil in a container by utilizing the change in capacitance between the sensor housing and the sensing electrode caused by oil entering the container, and converting this change into a change in current.

[0003] For example, a novel oil level sensor with publication number "CN218511848U" includes a sensor tube body. The bottom end of the sensor tube body has an oil inlet hole. Through a threaded collar, a movable fastening threaded collar, a fixed guide groove, a connecting limit block, and a fixed limit collar, the movable filter sleeve can be moved to move the connecting limit block, fitting onto the outer side of the bottom surface of the sensor tube body. Simultaneously, the connecting limit block can move along the inner side of the fixed guide groove. The fixed limit collar restricts the position of the threaded collar, and rotating the movable fastening threaded collar further restricts its position, thus fixing the position of the movable filter sleeve and preventing it from rotating on the outer surface of the sensor tube body. It also allows for quick disassembly and cleaning of the movable filter sleeve.

[0004] However, the seal between the active filter sleeve and the sensor tube in the above document is insufficient, and unfiltered oil may flow around into the oil inlet through the side gap, reducing the filtration effect. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an oil level sensor with good sealing performance that improves sealing and filtration effect, in order to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil level sensor with good sealing performance, comprising a sensor tube and a movable filter sleeve detachably disposed at the bottom end of the sensor tube, wherein the bottom end of the sensor tube has a plurality of oil inlet holes, characterized in that: the movable filter sleeve has a chamber, and a threaded collar extends upward from the outer edge of the chamber opening of the movable filter sleeve, a first sealing groove is formed on the inner wall of the threaded collar, a first sealing ring is embedded in the first sealing groove, the inner side of the first sealing ring can be tightly fitted with the outer surface of the sensor tube, and a movable fastening threaded ring that can be threadedly connected to the threaded collar is movably sleeved on the sensor tube.

[0007] The above technical solution improves the sealing between the movable filter sleeve and the sensor tube by providing a first sealing groove in the threaded collar and embedding a first sealing ring in the first sealing groove. This prevents the filtered oil from flowing around the side gap into the oil inlet and reducing the filtration effect. After the movable filter sleeve is installed on the sensor tube, the movable fastening threaded ring is rotated to make it threadedly connected to the threaded collar on the movable filter sleeve, thus completing the installation of the movable filter sleeve.

[0008] A further feature of this invention is that: a plurality of fixed guide grooves are provided on the outer surface of the sensor tube between adjacent oil inlets, and a connecting limiting block is provided inside the movable filter sleeve corresponding to the fixed guide grooves, and the connecting limiting block can be located within the fixed guide grooves.

[0009] The above technical solution provides guidance by using a fixed guide groove and a connecting limit block to facilitate the assembly of the movable filter sleeve onto the sensor tube. This also restricts the movement of the movable filter sleeve after assembly, preventing it from rotating.

[0010] A further feature of this invention is that: the connecting limiting block has protrusions on both sides in the middle, and the inner wall of the fixing guide groove has a groove that matches the shape of the protrusions.

[0011] The above technical solution is adopted: by setting the protrusion and the groove, when the movable filter sleeve can be fitted on the outer surface of the sensor tube body, and the connecting limiting block can be locked on the inner side of the fixed guide groove, as the connecting limiting block moves along the fixed guide groove to a certain position, the protrusion can enter the groove, further strengthening the connection stability between the sensor tube body and the movable filter sleeve.

[0012] A further feature of this invention is that a limiting collar is fixedly provided near the bottom of the sensor tube, an internal thread cavity is provided at the lower end of the movable fastening threaded ring, and an opening is provided at the upper end of the movable fastening threaded ring. The diameter of the opening is smaller than the diameter of the internal thread cavity, and the opening and the upper end of the internal thread cavity form an abutment surface that can abut against the limiting collar.

[0013] The above technical solution is adopted: by setting the limiting collar, the position of the threaded collar can be restricted. At the same time, since the diameter of the upper opening of the movable fastening threaded collar is smaller than the diameter of the internal thread cavity, the limiting collar can restrict the position of the movable fastening threaded collar before the movable filter sleeve is assembled. The abutting surface can abut against the limiting collar to prevent the movable fastening threaded collar from detaching from the outer surface of the sensor tube.

[0014] A further feature of this invention is that: a flange is fixedly connected to the top of the sensor tube, a fixed limiting groove is provided at the top of the flange, a movable mounting sleeve is movably connected to the inner side of the fixed limiting groove, an electrical box is fixedly connected to the inner side of the movable mounting sleeve, a lead wire is fixedly connected to the top of the electrical box, a movable fastening block is movably sleeved on the outer surface of the electrical box, and a fastening bolt is movably connected between the movable fastening block and the flange.

[0015] The above technical solution allows for the removal of the movable fastening block by rotating the fastening bolts, thus eliminating restrictions on the position of the movable mounting sleeve. This enables quick disassembly and maintenance of the electrical box and the movable mounting sleeve, making the operation convenient and easy for staff to install and disassemble.

[0016] A further feature of this invention is that a second sealing groove is provided along the inner wall of the fixed limiting groove, and a second sealing ring is embedded in the second sealing groove. The inner side of the second sealing ring can fit tightly against the outer wall of the movable mounting sleeve.

[0017] The above technical solution improves the sealing performance between the flange and the movable mounting sleeve by setting the second sealing groove and the second sealing ring.

[0018] A further feature of this invention is that: a wire clamp is provided at the top of the electrical box, the wire clamp includes mounting blocks at both ends, a through groove is provided between the mounting blocks for the lead wire to pass through, a first mounting hole is provided through the mounting blocks, a second mounting hole corresponding to the first mounting hole is provided on the upper surface of the electrical box, and a fastener is provided between the two.

[0019] The above technical solution involves adding a wire clamp to the electrical box outlet to reduce vibration and pulling. At the same time, the first and second mounting holes facilitate disassembly and assembly by the staff.

[0020] A further feature of this invention is that a connecting handle is fixedly connected to the top of the movable mounting sleeve, and a rubber protective sleeve is provided on the outside of the lead wire.

[0021] The above technical solution allows workers to easily remove the fastening bolts from between the movable fastening block and the flange, and then move the movable mounting sleeve and the electrical box as a whole by means of the connecting handle, thus enabling quick disassembly and maintenance of the electrical box; in addition, the rubber protective sleeve on the outside of the lead wire can disperse bending stress and prevent the lead wire from breaking.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is an exploded view of the present invention.

[0025] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the movable filter sleeve structure of this utility model.

[0027] Figure 5 This utility model Figure 2 Enlarged view of section B in the middle.

[0028] Figure 6 This is a schematic diagram of the movable fastening threaded ring structure of this utility model.

[0029] Figure 7 This utility model Figure 2 Enlarged view of point C.

[0030] Figure 8 This is an exploded view of the wire clamp and electrical box of this utility model.

[0031] Labeling: Sensor tube 1, oil inlet 11, fixed guide groove 12, groove 121, limiting collar 13, movable filter sleeve 2, chamber 21, threaded collar 22, first sealing groove 221, first sealing ring 222, connecting limiting block 23, protrusion 231, movable fastening threaded ring 3, internal thread cavity 31, opening 32, abutment surface 33, flange 4, fixed limiting groove 41, second sealing groove 411, movable mounting sleeve 5, connecting handle 51, electrical box 6, lead wire 61, wire clamp 62, mounting block 621, first mounting hole 621a, through groove 622, second mounting hole 63, movable fastening block 7. Detailed Implementation

[0032] In the accompanying drawings of this specific embodiment and the disclosed embodiments, only the structures involved in the disclosed embodiments are involved. Other structures can be referred to with ordinary design. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of this utility model, they are protected by patent law.

[0033] like Figure 1-8The oil level sensor shown includes a sensor tube 1 and a movable filter sleeve 2 detachably mounted at the bottom end of the sensor tube 1. The bottom end of the sensor tube 1 has several oil inlet holes 11. The movable filter sleeve 2 has a chamber 21 inside. The movable filter sleeve 2 extends upward at the outer edge of the opening 32 of the chamber 21 and has a threaded collar 22. The inner wall of the threaded collar 22 has a first sealing groove 221. A first sealing ring 222 is embedded in the first sealing groove 221. The inner side of the first sealing ring 222 can fit tightly against the outer surface of the sensor tube 1. A movable fastening threaded ring 3 that can be threadedly connected to the threaded collar 22 is movably sleeved on the sensor tube 1.

[0034] like Figure 2-5 The outer surface of the sensor tube 1 shown has several fixed guide grooves 12 between adjacent oil inlets 11. The interior of the movable filter sleeve 2 is provided with a connecting limiting block 23 corresponding to the fixed guide grooves 12, and the connecting limiting block 23 can be positioned within the fixed guide groove 12; Figure 4-5 The connecting limiting block 23 shown has protrusions 231 on both sides in the middle, and the inner wall of the fixed guide groove 12 has a groove 121 that matches the shape of the protrusions 231.

[0035] like Figure 5-6 The sensor tube 1 shown is fixed with a limiting collar 13 near the bottom. The lower end of the movable fastening threaded ring 3 is provided with an internal thread cavity 31. The upper end of the movable fastening threaded ring 3 is provided with an opening 32. The diameter of the opening 32 is smaller than the diameter of the internal thread cavity 31. The opening 32 and the upper end of the internal thread cavity 31 form an abutment surface 33 that can abut against the limiting collar 13.

[0036] like Figure 2 , 7 The sensor tube 1 shown in Figure 8 has a flange 4 fixedly connected to its top end. The top end of the flange 4 has a fixed limiting groove 41. The inner side of the fixed limiting groove 41 is movably connected to a movable mounting sleeve 5. The inner side of the movable mounting sleeve 5 is fixedly connected to an electrical box 6. The top end of the electrical box 6 is fixedly connected to a lead wire 61. The outer surface of the electrical box 6 is movably fitted with a movable fastening block 7. A fastening bolt is movably connected between the movable fastening block 7 and the flange 4.

[0037] like Figure 7 The fixed limiting groove 41 shown has a second sealing groove 411 along its inner wall. A second sealing ring (not shown in the figure) is embedded in the second sealing groove 411. The inner side of the second sealing ring can fit tightly against the outer wall of the movable mounting sleeve 5.

[0038] like Figure 8The electrical box 6 shown has a wire clamp 62 at its top. The wire clamp 62 includes mounting blocks 621 at both ends. A through groove 622 for the lead wire 61 to pass through is provided between the mounting blocks 621. A first mounting hole 621a is provided through the mounting blocks 621. A second mounting hole 63 corresponding to the first mounting hole 621a is provided on the upper surface of the electrical box 6. A fastener is provided between the two. Figure 8 The top of the movable mounting block 5 shown is fixedly connected to a connecting handle 51, and the outside of the lead wire 61 is provided with a rubber protective sleeve.

[0039] Compared with the lack of a sealing structure in the prior art, this utility model improves the sealing performance between the movable filter sleeve 2 and the sensor tube 1 by opening a first sealing groove 221 in the threaded collar 22 and embedding a first sealing ring 222 in the first sealing groove 221. This prevents the filtered oil from flowing around the side gap into the oil inlet hole 11 and reducing the filtration effect. At the same time, after the movable filter sleeve 2 is installed on the sensor tube 1, the movable fastening threaded ring 3 is rotated to make it threadedly connected with the threaded collar 22 on the movable filter sleeve 2, thus completing the installation of the movable filter sleeve 2. In addition, the second sealing groove 411 and the second sealing ring improve the sealing performance between the flange 4 and the movable mounting block 5, further enhancing the sealing effect of this utility model.

Claims

1. A well-sealed oil level sensor, comprising a sensor tube and a movable filter sleeve detachably disposed at the bottom end of the sensor tube, wherein the bottom end of the sensor tube has a plurality of oil inlet holes, characterized in that: The movable filter sleeve has a chamber inside, and a threaded collar extends upward from the outer edge of the chamber opening. A first sealing groove is opened on the inner wall of the threaded collar, and a first sealing ring is embedded in the first sealing groove. The inner side of the first sealing ring can fit tightly against the outer surface of the sensor tube. A movable fastening threaded ring that can be threadedly connected to the threaded collar is movably sleeved on the sensor tube.

2. The oil level sensor with good sealing performance according to claim 1, characterized in that: The outer surface of the sensor tube has several fixed guide grooves between adjacent oil inlets. The interior of the movable filter sleeve is provided with a connecting limit block corresponding to the fixed guide grooves. The connecting limit block can be located within the fixed guide groove.

3. The oil level sensor with good sealing performance according to claim 2, characterized in that: The connecting limiting block has protrusions on both sides in the middle, and the inner wall of the fixed guide groove has a groove that matches the shape of the protrusions.

4. The oil level sensor with good sealing performance according to claim 3, characterized in that: A limiting collar is fixedly provided near the bottom of the sensor tube. The lower end of the movable fastening threaded ring has an internal thread cavity. The upper end of the movable fastening threaded ring has an opening. The diameter of the opening is smaller than the diameter of the internal thread cavity. The opening and the upper end of the internal thread cavity form an abutment surface that can abut against the limiting collar.

5. A well-sealed oil level sensor according to any one of claims 1-4, characterized in that: A flange is fixedly connected to the top of the sensor tube. A fixed limiting groove is provided at the top of the flange. A movable mounting sleeve is movably connected to the inner side of the fixed limiting groove. An electrical box is fixedly connected to the inner side of the movable mounting sleeve. A lead wire is fixedly connected to the top of the electrical box. A movable fastening block is movably sleeved on the outer surface of the electrical box. A fastening bolt is movably connected between the movable fastening block and the flange.

6. The oil level sensor with good sealing performance according to claim 5, characterized in that: The fixed limiting groove has a second sealing groove along its inner wall, and a second sealing ring is embedded in the second sealing groove. The inner side of the second sealing ring can fit tightly against the outer wall of the movable mounting sleeve.

7. The oil level sensor with good sealing performance according to claim 6, characterized in that: The electrical box is provided with a wire clamp at the top. The wire clamp includes mounting blocks at both ends. A through groove is provided between the mounting blocks for the lead wire to pass through. A first mounting hole is provided through the mounting block. A second mounting hole corresponding to the first mounting hole is opened on the upper surface of the electrical box. A fastener is provided between the two.

8. The oil level sensor with good sealing performance according to claim 7, characterized in that: The top of the movable mounting sleeve is fixedly connected to a connecting handle, and the outside of the lead wire is provided with a rubber protective sleeve.

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