High-precision high-temperature-resistant oil-stain-resistant sensor

Abstract

The utility model discloses a high-precision high-temperature-resistant oil-stain-resistant sensor, which relates to the technical field of sensors and comprises a sensor body, a mounting seat is fixed on the sensor body, a protective sleeve is inserted on the mounting seat, and a sealing plate is fixed at one end, far away from the mounting seat, of the protective sleeve. A protective cover is fixed to the side, away from the protective sleeve, of the sealing plate, the sensor body is arranged in the protective sleeve and the protective cover, the protective sleeve further comprises a base shell, the base shell is sleeved with a heat-resisting layer, and the heat-resisting layer is sleeved with an oil-resisting layer. The protective sleeve composed of the base shell and the oil-resistant layer and the high-temperature-resistant layer which are bonded on the base shell can protect the sensor body to work in a high-temperature environment with more greasy dirt, meanwhile, the protective cover is arranged on the sensing part on the sensor body in a sleeving mode, it can be guaranteed that the sensing part of the sensor body is in contact with the outside, and the sensor body is protected from being damaged. And oil stains can be prevented from gathering on the sensing part of the sensor body, so that the precision of the sensor body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a high-precision, high-temperature and oil-resistant sensor. Background Art

[0002] A sensor is a device that receives signals or stimuli and responds, and can convert the physical or chemical quantity to be measured into another corresponding output. Due to the limited range of use of sensors and their complex internal structure, the sensors may not work stably in some environments containing oil, dirt, high temperature, etc.

[0003] The existing patent (publication number: CN220932234U) proposes a high-temperature resistant force sensor, including: a metal seat, provided with a liquid groove and a mounting hole; a metal corrugated sheet and a metal pressure ring, the metal corrugated sheet is located between the metal seat and the metal pressure ring, and the liquid groove is sealed as a liquid cavity; a metal cover plate, fixed on the metal corrugated sheet, the bottom end of the metal cover plate is provided with a corrugated protrusion and a corrugated groove that fit the metal corrugated sheet; a connector, arranged in the mounting hole, the connector includes an insulating seat and a conductive part, one end of the conductive part extends out of the insulating seat; a pressure chip, fixed on the connector, the metal PAD of the pressure chip is electrically connected to the other end of the conductive part. The high-temperature resistant force sensor disclosed in the utility model has a small size and is conducive to the miniaturization of the structure. Since the metal seat, the metal corrugated sheet, the metal pressure ring and the metal cover plate are all made of metal, the creep resistance is enhanced, and the added pressure chip can withstand a higher operating temperature, which is conducive to the detection of pressure.

[0004] The above-mentioned sensor adopts a technical solution to solve the high temperature resistance problem. The metal seat, metal corrugated sheet, metal pressure ring and metal cover are all made of metal, and the creep resistance is enhanced. The added pressure chip can withstand higher operating temperatures. The problem with this solution is that although metal can withstand high temperatures and will not melt, it also conducts heat, which will cause the chip inside the sensor to overheat and be damaged. Therefore, we propose a high-precision, high-temperature and oil-resistant sensor to solve the above problems. Utility Model Content

[0005] The utility model provides a high-precision, high-temperature and oil-resistant sensor, which solves the technical problems of low precision, low high-temperature resistance and low oil resistance of current sensors.

[0006] In order to solve the above technical problems, the utility model provides a high-precision, high-temperature resistant and oil-resistant sensor, including a sensor body, a mounting seat fixed on the sensor body, a protective sleeve inserted on the mounting seat, a sealing plate fixed on the end of the protective sleeve away from the mounting seat, a protective cover fixed on the side of the sealing plate away from the protective sleeve, the sensor body is arranged in the protective sleeve and the protective cover, the protective sleeve also includes a base shell, a heat-resistant layer is provided on the base shell, and an oil-resistant layer is provided on the heat-resistant layer.

[0007] Preferably, the heat-resistant layer is bonded to the base shell, and the oil-resistant layer is bonded to the heat-resistant layer.

[0008] The above technical scheme is adopted: the heat-resistant layer is bonded to the base shell, the high temperature resistant material is made of acrylic, the oil-resistant layer is bonded to the heat-resistant layer, the oil-resistant layer is made of oil-resistant rubber, the oil-resistant rubber takes rubber as the main material, and is a product with a certain thickness made by vulcanization. At the same time, the oil-resistant layer, the heat-resistant layer and the base shell are bonded together, so that the protective cover has good heat insulation and oil resistance effects.

[0009] Preferably, the sensor body further includes a sensing part, a shell part, a mounting part and a wire plug-in part, the wire plug-in part is fixed to the top of the mounting part, the shell part is fixed to the bottom of the mounting part, and the sensing part is fixed to the bottom of the shell part.

[0010] The above technical solution is adopted: the sensor body also includes a sensing part, a shell part, a mounting part and a wire plug-in part, the wire plug-in part is fixed on the top of the mounting part, the shell part is fixed on the bottom of the mounting part, the sensing part is fixed on the bottom of the shell part, the sensing part is used to sense and receive external information, and then connect the information with the control center through the wire plug-in part to transmit the sensed information to the control center.

[0011] Preferably, the mounting seat is fixed to the shell portion of the sensor body and close to one end of the mounting portion, a first through hole is provided on the mounting seat, a cross-sectional dimension of the first through hole is the same as a cross-sectional dimension of the mounting portion, an annular groove is provided at the bottom of the mounting seat, a plurality of threaded holes are provided on the mounting seat and on the outside of the annular groove, the threaded holes are connected with the annular groove, a screw is provided on the threaded hole, and a second sealing gasket is provided in the annular groove.

[0012] The above technical solution is adopted: a mounting base is fixed to the shell part of the sensor body and one end close to the mounting part, a first through hole is opened on the mounting base, the cross-sectional size of the first through hole is the same as the cross-sectional size of the mounting part, an annular groove is opened at the bottom of the mounting base, a plurality of threaded holes are opened on the mounting base and on the outside of the annular groove, the threaded holes are connected with the annular groove, a screw is arranged on the threaded hole, and a second sealing gasket is arranged in the annular groove, so as to facilitate the disassembly and installation of the protective cover.

[0013] Preferably, a fastening component is provided on the mounting seat, and the fastening component includes a fastening nut and a first sealing gasket, the first sealing gasket is arranged between the fastening nut and the mounting seat, the protective sleeve is inserted into an annular groove opened on the mounting seat, and the protective sleeve and the mounting seat are fixed by a screw thread.

[0014] The above technical solution is adopted: a fastening component is arranged on the mounting seat, the fastening component includes a fastening nut and a first sealing gasket, the first sealing gasket is arranged between the fastening nut and the mounting seat, the protective sleeve is inserted into an annular groove opened on the mounting seat, and the protective sleeve and the mounting seat are fixed by a screw thread so that the protective sleeve will not fall off the mounting seat.

[0015] Preferably, a second through hole is formed on the sealing plate, and a size of the second through hole is the same as a cross-sectional size of the sensing portion in the sensor body.

[0016] The above technical solution is adopted: a second through hole is opened on the sealing plate, and the size of the second through hole is the same as the cross-sectional size of the sensing part in the sensor body, so that oil and dirt will not enter the protective cover from one end of the sensing part.

[0017] Preferably, the shell portion and the sensing portion of the sensor body are arranged in a protective cover, and a second through hole extends from the bottom of the sensing portion of the sensor body into the protective cover.

[0018] The above technical solution is adopted: the shell part and the sensing part of the sensor body are arranged in the protective cover, and the bottom of the sensing part of the sensor body extends a second through hole into the protective cover, and the sensing part is exposed in the protective cover to facilitate sensing and receiving external information.

[0019] Preferably, the protective cover is provided with a plurality of mesh holes.

[0020] The above technical solution is adopted: a number of mesh holes are opened on the protective cover, so that the sensing part in the sensor body can receive external information through the mesh holes. At the same time, the mesh holes can play a protective role to prevent oil and dust from concentrating on the sensing part, thereby improving the sensing accuracy of the sensor body.

[0021] Compared with the related art, the utility model has the following beneficial effects:

[0022] 1. Compared with the traditional sensor, the utility model is provided with a protective sleeve and a protective cover, the protective sleeve is inserted on the mounting seat, a sealing plate is fixed on the end of the protective sleeve away from the mounting seat, a protective cover is fixed on the side of the sealing plate away from the protective sleeve, the sensor body is arranged in the protective sleeve and the protective cover, the protective sleeve also includes a base shell, a heat-resistant layer is sleeved on the base shell, an oil-resistant layer is sleeved on the heat-resistant layer, the base shell and the protective sleeve composed of the oil-resistant layer and the high-temperature resistant layer bonded to the base shell can protect the sensor body to work in an environment with high temperature and more oil pollution, at the same time, the protective cover is sleeved on the sensing part of the sensor body, which can ensure that the sensing part of the sensor body is in contact with the outside world, and can prevent oil pollution and dust from accumulating in the sensing part of the sensor body, thereby improving the sensing accuracy of the sensor body.

[0023] 2. In the utility model, an annular groove and a threaded hole are provided on the mounting seat, which facilitates inserting the protective sleeve into the annular groove in the mounting seat, and then fixing the protective sleeve with a screw, which facilitates disassembly, installation and replacement of the protective sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a high-precision, high-temperature and oil-resistant sensor;

[0025] Figure 2 It is a cross-sectional schematic diagram of a high-precision, high-temperature and oil-resistant sensor;

[0026] Figure 3 This is a disassembled diagram of the sensor body, mounting base, protective sleeve, and protective cover in a high-precision, high-temperature, and oil-resistant sensor;

[0027] Figure 4 The cross-sectional view shows the mounting seat, protective sleeve and protective cover of a high-precision, high-temperature and oil-resistant sensor.

[0028] Numbers in the figure: 1. sensor body; 11. sensing part; 12. shell part; 13. mounting part; 14. wire plug-in part; 2. fastening component; 21. fastening nut; 22. first sealing gasket; 3. mounting seat; 31. first through hole; 32. annular groove; 33. threaded hole; 34. screw; 35. second sealing gasket; 4. protective cover; 41. oil-resistant layer; 42. heat-resistant layer; 43. base shell; 5. sealing plate; 51. second through hole; 6. protective cover; 61. mesh. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] Embodiment 1

[0031] like Figure 1-Figure 4 As shown, a high-precision, high-temperature-resistant and oil-resistant sensor comprises a sensor body 1, a mounting seat 3 is fixed on the sensor body 1, a protective sleeve 4 is inserted on the mounting seat 3, a sealing plate 5 is fixed on one end of the protective sleeve 4 away from the mounting seat 3, a protective cover 6 is fixed on the side of the sealing plate 5 away from the protective sleeve 4, the sensor body 1 is arranged in the protective sleeve 4 and the protective cover 6, the protective sleeve 4 further comprises a base shell 43, a heat-resistant layer 42 is sleeved on the base shell 43, and an oil-resistant layer 41 is sleeved on the heat-resistant layer 42;

[0032] A mounting base 3 is fixed on the sensor body 1, and a protective sleeve 4 is inserted on the mounting base 3. A sealing plate 5 is fixed on the end of the protective sleeve 4 away from the mounting base 3, and a protective cover 6 is fixed on the side of the sealing plate 5 away from the protective sleeve 4. The sensor body 1 is arranged in the protective sleeve 4 and the protective cover 6. The protective sleeve 4 also includes a base shell 43, and a heat-resistant layer 42 is sleeved on the base shell 43, and an oil-resistant layer 41 is sleeved on the heat-resistant layer 42. The protective sleeve 4 composed of the base shell 43 and the oil-resistant layer 41 and the high-temperature resistant layer bonded to the base shell 43 can protect the sensor body 1 from working in an environment with high temperature and more oil pollution. At the same time, the protective cover 6 is sleeved on the sensing part 11 on the sensor body 1, which can ensure that the sensing part 11 of the sensor body 1 is in contact with the outside world, and can prevent oil pollution and dust from accumulating in the sensing part 11 of the sensor body, thereby improving the sensing accuracy of the sensor body 1.

[0033] Embodiment 2

[0034] like Figure 1-Figure 4 As shown, the heat-resistant layer 42 is bonded to the base shell 43, and the oil-resistant layer 41 is bonded to the heat-resistant layer 42. The sensor body 1 also includes a sensing part 11, a shell part 12, a mounting part 13 and a wire plug-in part 14. The wire plug-in part 14 is fixed to the top of the mounting part 13, the shell part 12 is fixed to the bottom of the mounting part 13, and the sensing part 11 is fixed to the bottom of the shell part 12. The mounting seat 3 is fixed to the shell part 12 in the sensor body 1 and is close to one end of the mounting part 13. The mounting seat 3 is provided with a first through hole 31, and the cross-sectional size of the first through hole 31 is the same as the cross-sectional size of the mounting part 13. The bottom of the mounting seat 3 is provided with an annular groove 32, and a plurality of threaded holes 33 are provided on the mounting seat 3 and on the outer side of the annular groove 32. The threaded holes 33 are connected with the annular groove 32, and a screw 34 is provided on the threaded hole 33. A second sealing gasket 35 is provided in the annular groove 32, and a fastening component 2 is provided on the mounting seat 3. The fastening component 2 includes a fastening nut 21 and a first sealing gasket 22. The first sealing gasket 22 is arranged between the fastening nut 21 and the mounting seat 3. The protective sleeve 4 is inserted into the annular groove 32 provided on the mounting seat 3. The protective sleeve 4 and the mounting seat 3 are threadedly fixed by a screw 34. A second through hole 51 is provided on the sealing plate 5. The size of the second through hole 51 is the same as the cross-sectional size of the sensing part 11 in the sensor body 1. The shell part 12 and the sensing part 11 in the sensor body 1 are partly provided in the protective sleeve 4. The bottom of the sensing part 11 in the sensor body 1 extends from the second through hole 51 to the protective cover 6. The protective cover 6 is provided with a plurality of mesh holes 61, so that the sensing part 11 in the sensor body 1 can receive external information through the mesh holes 61. At the same time, the mesh holes 61 can play a protective role to prevent oil and dust from concentrating on the sensing part 11, thereby improving the sensing accuracy of the sensor body 1.

[0035] The mounting seat 3 is fixed to the housing portion 12 of the sensor body 1 and is close to one end of the mounting portion 13. A first through hole 31 is provided on the mounting seat 3. The cross-sectional size of the first through hole 31 is the same as the cross-sectional size of the mounting portion 13. An annular groove 32 is provided at the bottom of the mounting seat 3. A plurality of threaded holes 33 are provided on the mounting seat 3 and on the outer side of the annular groove 32. The threaded holes 33 are connected with the annular groove 32. A screw 34 is provided on the threaded hole 33. A second sealing gasket 35 is provided in the annular groove 32 to facilitate the disassembly and installation of the protective sleeve 4. A fastening component 2 is provided on the mounting seat 3. The fastening component 2 includes a fastening nut 21 and a first sealing gasket 22. The first sealing gasket 22 is provided between the fastening nut 21 and the mounting seat 3. The protective sleeve 4 is inserted into the annular groove 32 provided on the mounting seat 3. The protective sleeve 4 and the mounting seat 3 are threadedly fixed by the screw 34, so that the protective sleeve 4 will not fall off the mounting seat 3.

[0036] The heat-resistant layer 42 is bonded to the base shell 43, and the high-temperature resistant material is made of acrylic. The oil-resistant layer 41 is bonded to the heat-resistant layer 42, and the oil-resistant layer 41 is made of oil-resistant rubber. The oil-resistant rubber takes rubber as the main material and is a product with a certain thickness made by vulcanization. At the same time, the bonding between the oil-resistant layer 41, the heat-resistant layer 42 and the base shell 43 makes the protective cover 4 have good heat insulation and oil resistance effects.

[0037] Working principle: Figure 1-4 As shown, the protective sleeve 4 is inserted into the annular groove 32 opened on the mounting seat 3, and then the threaded hole 33 is tightened to fix the protective sleeve 4 on the mounting seat 3. At the same time, the fastening nut 21 is tightened to make the first sealing gasket 22 close to the mounting seat 3, so that the shell part 12 of the sensor body 1 is arranged in the protective sleeve 4, and the sensing part 11 of the sensor body 1 partially penetrates the sealing plate 5 and is inserted in the protective cover 6. The protective sleeve 4 composed of the base shell 43 and the oil-resistant layer 41 and the high-temperature resistant layer bonded to the base shell 43 can protect the sensor body 1 from working in a high-temperature and oil-rich environment. At the same time, the protective cover 6 is sleeved on the sensing part 11 of the sensor body 1, which can ensure that the sensing part 11 of the sensor body 1 is in contact with the outside world, while preventing oil and dust from accumulating in the sensing part 11 of the sensor body, thereby improving the sensing accuracy of the sensor body 1.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision, high-temperature and oil-resistant sensor, comprising a sensor body (1), characterized in that: The sensor body (1) is fixed with a mounting seat (3), a protective sleeve (4) is inserted into the mounting seat (3), a sealing plate (5) is fixed to one end of the protective sleeve (4) away from the mounting seat (3), a protective cover (6) is fixed to one side of the sealing plate (5) away from the protective sleeve (4), the sensor body (1) is arranged in the protective sleeve (4) and the protective cover (6), the protective sleeve (4) further comprises a base shell (43), a heat-resistant layer (42) is sleeved on the base shell (43), and an oil-resistant layer (41) is sleeved on the heat-resistant layer (42).

2. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The heat-resistant layer (42) is bonded to the base shell (43), and the oil-resistant layer (41) is bonded to the heat-resistant layer (42).

3. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The sensor body (1) further comprises a sensing part (11), a shell part (12), a mounting part (13) and a wire plug-in part (14); the wire plug-in part (14) is fixed to the top of the mounting part (13), the shell part (12) is fixed to the bottom of the mounting part (13), and the sensing part (11) is fixed to the bottom of the shell part (12).

4. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The mounting seat (3) is fixed to the housing portion (12) of the sensor body (1) and is close to one end of the mounting portion (13). A first through hole (31) is provided on the mounting seat (3). The cross-sectional dimension of the first through hole (31) is the same as the cross-sectional dimension of the mounting portion (13). An annular groove (32) is provided at the bottom of the mounting seat (3). A plurality of threaded holes (33) are provided on the mounting seat (3) and outside the annular groove (32). The threaded holes (33) are connected to the annular groove (32). A screw (34) is provided on the threaded hole (33). A second sealing gasket (35) is provided in the annular groove (32).

5. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: A fastening component (2) is provided on the mounting seat (3), and the fastening component (2) comprises a fastening nut (21) and a first sealing gasket (22), wherein the first sealing gasket (22) is provided between the fastening nut (21) and the mounting seat (3), and the protective sleeve (4) is inserted into an annular groove (32) provided on the mounting seat (3), and the protective sleeve (4) and the mounting seat (3) are threadedly fixed via a screw (34).

6. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The sealing plate (5) is provided with a second through hole (51), and the size of the second through hole (51) is the same as the cross-sectional size of the sensing part (11) in the sensor body (1).

7. A high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The shell portion (12) and the sensing portion (11) of the sensor body (1) are partially arranged in the protective sleeve (4), and the bottom of the sensing portion (11) of the sensor body (1) extends through a second through hole (51) into the protective cover (6).

8. The high-precision, high-temperature and oil-resistant sensor according to claim 1, characterized in that: The protective cover (6) is provided with a plurality of mesh holes (61).

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