Industrial temperature sensor

Abstract

The utility model relates to an industrial temperature sensor. According to the technical scheme, the device comprises a sensor probe, the right end of the sensor probe is fixedly connected with an external thread fixing sleeve, the right end of the external thread fixing sleeve is fixedly connected with a sealing cover, and through holes are formed in the upper side and the lower side of the left end face of the external thread fixing sleeve correspondingly; the upper and lower screw rods and the sensor probe are movably sleeved with cleaning blocks, the ends, inserted into the outer screw fixing sleeve, of the right ends of the upper and lower screw rods are fixedly sleeved with first gears respectively, and the upper and lower first gears are meshed with a second gear through teeth at the same time; the second gear is fixedly arranged on an output shaft of a micro motor in a sleeving mode, and the micro motor is fixedly installed in an outer thread fixing sleeve. The temperature sensor has the advantages that the graphene composite coating is arranged, the dirt adhesion rate is reduced, meanwhile, the dirt cleaning assembly is arranged, dirt on the probe is automatically scraped, and the accuracy and stability of the temperature sensor in the detection process are improved.

Description

Technical Field

[0001] This utility model belongs to the field of temperature sensors and relates to an industrial temperature sensor. Background Technology

[0002] Industrial temperature sensors are instruments primarily used to detect temperatures under specific operating conditions in industrial control processes. They detect temperature by detecting changes in resistance caused by temperature, and then converting these changes in resistance into voltage or current (i.e., analog signals) into digital signals. Existing industrial temperature sensors lack corresponding cleaning components, especially in dusty environments. Prolonged use of temperature sensors can easily lead to dirt accumulation on the sensor surface. This dirt adheres to the sensor probe surface and forms a heat-insulating layer, hindering heat exchange between the probe and the measured object, resulting in a measured value lower than the actual temperature. Furthermore, if the dirt contains conductive or thermally conductive materials (such as metallic dust), it may further interfere with the sensor's signal transmission and heat conduction efficiency, thus causing detection errors.

[0003] Therefore, this utility model provides an industrial temperature sensor that solves the above problems by incorporating an automatic cleaning component. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses an industrial temperature sensor. The technical solution adopted is as follows: a sensor probe is included, and an external threaded fixing sleeve is fixedly connected to the right end of the sensor probe. A sealing cover is fixedly connected to the right end of the external threaded fixing sleeve. Through holes are respectively opened on the upper and lower sides of the left end face of the external threaded fixing sleeve. A cleaning component is rotatably inserted into the upper and lower through holes. The cleaning component includes a screw that is rotatably inserted into the upper and lower through holes. A cleaning block is movably mounted on the upper and lower screws and the sensor probe. A first gear is fixedly mounted on the right end of the upper and lower screws inserted into the external threaded fixing sleeve. A second gear is simultaneously engaged between the upper and lower first gears. The second gear is fixedly mounted on the output shaft of a micro motor. The micro motor is fixedly installed in the external threaded fixing sleeve.

[0005] As a preferred embodiment of this utility model, a fastening nut is screwed onto the external threaded fixing sleeve.

[0006] As a preferred embodiment of this utility model, the upper and lower lead screws are respectively fixed with limiting rings at the positions outside the left end face of the outer lead screw fixing sleeve. The left end of the lead screw is 5-10mm longer than the left end of the sensor probe. This arrangement of the lead screws ensures that the stroke of the cleaning block completely covers the sensor probe, thereby completely scraping off the dirt on the sensor probe.

[0007] As a preferred embodiment of this utility model, the lead screws at the left ends of the upper and lower first gears respectively pass through the upper and lower sides of the isolation plate. The isolation plate is fixedly installed inside the outer thread fixing sleeve, and a wire-passing hole is opened on the rear edge of the isolation plate. By using the isolation plate in conjunction with the outer thread fixing sleeve, it is easy to stably limit the right ends of the upper and lower lead screws, thereby improving their stability during rotation.

[0008] In a preferred embodiment of this utility model, the micro motor is fixedly inserted into the fixed sleeve, and the upper and lower sides of the fixed sleeve are respectively fixedly connected to the inner wall of the external thread fixed sleeve through connecting blocks.

[0009] As a preferred embodiment of this utility model, the outer surface of the sensor probe is covered with a graphene composite coating; by using the graphene composite coating, the dirt adhesion rate can be reduced and the cleaning cycle can be extended.

[0010] The beneficial effects of this invention are as follows: By covering the outer surface of the sensor probe with a graphene composite coating, the dirt adhesion rate can be reduced and the cleaning cycle can be extended. At the same time, the micro motor is controlled by the system to rotate, which drives the second gear to rotate. The second gear drives the upper and lower first gears to rotate synchronously in the same direction, which in turn drives the upper and lower lead screws to rotate synchronously in the same direction. The upper and lower lead screws drive the cleaning block mounted on it to move back and forth along the sensor probe, scraping off the dirt on the sensor probe. This can effectively reduce the detection error caused by dirt adhesion and improve the accuracy of the temperature sensor measurement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0013] Figure 3 This is a cross-sectional view showing the conversion between the external thread fixing sleeve and the cleaning component of this utility model.

[0014] In the diagram: 1-Sensor probe, 2-External thread fixing sleeve, 3-Sealing cover, 4-Stain cleaning component, 5-Miniature motor, 6-Fixing sleeve, 21-Isolation plate, 211-Wire hole, 41-Lead screw, 411-Limiting ring, 42-Stain cleaning block, 43-First gear, 44-Second gear, 61-Connecting block. Detailed Implementation

[0015] Example 1

[0016] like Figures 1 to 3As shown, the industrial temperature sensor of this utility model adopts the following technical solution: It includes a sensor probe 1, the outer surface of which is covered with a graphene composite coating. An external threaded fixing sleeve 2 is fixedly connected to the right end of the sensor probe 1. A fastening nut is screwed onto the external threaded fixing sleeve 2. A sealing cap 3 is fixedly connected to the right end of the external threaded fixing sleeve 2. Through holes are respectively opened on the upper and lower sides of the left end face of the external threaded fixing sleeve 2. A cleaning component 4 is rotatably inserted into the upper and lower through holes. The cleaning component 4 includes a screw rod 41 rotatably inserted into the upper and lower through holes. Limiting rings 411 are fixedly fitted onto the upper and lower screw rods 41 at the outer side of the left end face of the external threaded fixing sleeve 2. The left end of the screw rod 41 is 5-10mm longer than the left end of the sensor probe 1. The screw rods at the left ends of the upper and lower first gears 43 respectively penetrate through the isolation plate 21. On the upper and lower sides, the isolation plate 21 is fixedly installed inside the external thread fixing sleeve 2. The rear edge of the isolation plate 21 has a wire hole 211. The upper and lower lead screws 41 and the sensor probe 1 are movably fitted with cleaning blocks 42. The right end of the upper and lower lead screws 41 is inserted into one end of the external thread fixing sleeve 2 and a first gear 43 is fixedly fitted. The upper and lower first gears 43 simultaneously mesh with a second gear 44. The second gear 44 is fixedly fitted on the output shaft of the micro motor 5. The micro motor 5 is fixedly inserted into the fixing sleeve 6. The upper and lower sides of the fixing sleeve 6 are fixedly connected to the inner wall of the external thread fixing sleeve 2 through connecting blocks 61. The right end of the sensor probe 1 is fixedly connected to a signal line. The signal line passes through the wire hole 211 and the sealing cover 3 in sequence. The control line of the micro motor 5 also passes through the sealing cover 3 and finally makes an electrical connection with the external controller.

[0017] The working principle of this utility model is as follows: The temperature sensor is installed by inserting it into the corresponding fixing hole and tightening the fixing nut. During use, the external controller receives the electrical signal transmitted by the sensor probe 1, converts the electrical signal into a digital signal, and thus forms the detected temperature value. With long-term use of the sensor, the accumulation of dirt increases the thermal resistance of the outer sleeve of the sensor probe, slowing down its response speed and causing thermal inertia error. The external controller can periodically start the micro motor 5 to rotate reciprocally, thereby driving the second gear 44 to rotate, which in turn drives the upper and lower first gears 43 to rotate synchronously in the same direction. This causes the upper and lower lead screws 41 to rotate synchronously in the same direction, thereby driving the cleaning block 42 to move reciprocally along the surface of the sensor probe 1, scraping away the dirt in time. This achieves automatic cleaning of the sensor probe 1 without stopping the machine. After each cleaning, the temperature sensor is recalibrated by the external controller to ensure data accuracy.

[0018] Electrical connection methods or structures not described in detail in this article are existing technologies.

[0019] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. An industrial temperature sensor, comprising a sensor probe (1), wherein an external threaded retaining sleeve (2) is fixedly connected to the right end of the sensor probe (1), and a sealing cap (3) is fixedly connected to the right end of the external threaded retaining sleeve (2), characterized in that: The left end face of the external thread fixing sleeve (2) has through holes on the upper and lower sides respectively. The cleaning component (4) is rotatably inserted into the upper and lower through holes. The cleaning component (4) includes a screw (41) with a screw inserted into the upper and lower through holes. The upper and lower screws (41) and the cleaning block (42) are movably mounted on the sensor probe (1). The right end of the upper and lower screws (41) is inserted into one end of the external thread fixing sleeve (2) and a first gear (43) is fixedly mounted. The upper and lower first gears (43) simultaneously mesh with a second gear (44). The second gear (44) is fixedly mounted on the output shaft of the micro motor (5). The micro motor (5) is fixedly installed in the external thread fixing sleeve (2).

2. The industrial temperature sensor according to claim 1, characterized in that: The external thread fixing sleeve (2) is screwed with a fastening nut.

3. An industrial temperature sensor according to claim 1, characterized in that: The upper and lower lead screws (41) are respectively fixed with limiting rings (411) on the outer side of the left end face of the outer screw fixing sleeve (2). The left end of the lead screw (41) is 5-10mm longer than the left end of the sensor probe (1).

4. An industrial temperature sensor according to claim 1, characterized in that: The lead screws at the left end of the first gear (43) pass through the upper and lower sides of the isolation plate (21) respectively. The isolation plate (21) is fixedly installed inside the outer thread fixing sleeve (2). A wire hole (211) is opened on the rear edge of the isolation plate (21).

5. An industrial temperature sensor according to claim 1, characterized in that: The micro motor (5) is fixedly inserted into the fixed sleeve (6), and the upper and lower sides of the fixed sleeve (6) are respectively fixedly connected to the inner wall of the external thread fixed sleeve (2) through connecting blocks (61).

6. An industrial temperature sensor according to claim 1, characterized in that: The outer surface of the sensor probe (1) is covered with a graphene composite coating.

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