Anti-corrosion wear-resistant thermal resistor

Abstract

The utility model relates to the field of thermal resistors, in particular to an anti-corrosion wear-resistant thermal resistor. The resistor comprises a resistor body, the outer wall of the resistor body is sleeved with a protective shell, and the inner wall of the protective shell is fixedly connected with a clamping mechanism used for fixing the protective shell to the outer wall of the resistor body. The positioning rod is moved out of the gap between the two clamping blocks by manually pressing the positioning rod, then the rotating rod is manually rotated to be matched with the driving gear, the annular gear, the spur rack and the like to drive the fixing plate to move, and the outer wall of the resistor body is clamped and fixed, so that the protective shell can be quickly disassembled and assembled, and the working efficiency is improved. Resistor main bodies with different diameters can be clamped and fixed, so that the adaptability of the device is improved; and after the clamping mechanism is adjusted, the positioning rod is manually loosened, and the rotating rod can be quickly limited through the elastic movement of the positioning rod, so that the stability of the clamping mechanism after clamping and fixing is ensured.

Description

Technical Field

[0001] The utility model relates to the field of thermal resistors, in particular to an anti-corrosion and wear-resistant thermal resistor. Background Art

[0002] Thermal resistors are the most commonly used temperature detectors in the medium and low temperature range. Thermal resistor temperature measurement is based on the property that the resistance value of a metal conductor increases with the increase of temperature to measure temperature. Its main features are high measurement accuracy and stable performance. Among them, platinum thermal resistors have the highest measurement accuracy. They are not only widely used in industrial temperature measurement, but also made into standard reference instruments. Since thermal resistors are inevitably in a highly corrosive and highly abrasive environment, they may age after long-term use, resulting in incorrect or no signal output from the temperature sensor, resulting in poor detection results.

[0003] At present, most of the protection of thermal resistors against corrosion and wear is carried out by installing a protective shell outside the thermal resistor. Generally, the thermal resistor protective shell is integrated with the thermal resistor. Therefore, when the protective shell is worn or damaged, it is often necessary to directly replace the entire thermal resistor, which increases the cost of use. There are also some protective shells that are disassembled by bolts, but the size between the protective shell and the thermal resistor is fixed, so the diameter of the protective shell cannot be adjusted to fix it according to the different diameters of the thermal resistor, which reduces the applicability of the device. Utility Model Content

[0004] The purpose of this utility model is to solve the above shortcomings and provide a corrosion-resistant and wear-resistant thermal resistor;

[0005] To achieve the above-mentioned objectives, the utility model provides a corrosion-resistant and wear-resistant thermal resistor, including a resistor body, the outer wall of the resistor body is sleeved with a protective shell, the inner wall of the protective shell is fixedly connected with a clamping mechanism for fixing the protective shell to the outer wall of the resistor body, the inside of the protective shell is rotatably connected with a driving mechanism for driving the clamping mechanism to move, and the top of the protective shell is fixedly connected with a fixing mechanism for limiting the driving mechanism.

[0006] As a further improvement of the present technical solution, the clamping mechanism includes a partition fixedly connected to the inner wall of the protective shell, a groove is opened inside the protective shell, and the partition is located inside the groove, a plurality of spur racks are slidably connected above the partition, a fixed plate is fixedly connected to one side of the spur racks close to the resistor body, and a ring gear is rotatably connected below the partition.

[0007] As a further improvement of the present technical solution, the driving mechanism includes a plurality of driving gears rotatably connected above the groove, the upper ends of the plurality of driving gears are meshingly connected with adjacent spur racks, and the lower ends of the plurality of driving gears are meshingly connected with annular gears, the top of the protective shell is rotatably connected with a rotating rod, the bottom of the rotating rod passes through the top of the protective shell, and the bottom of the rotating rod is fixedly connected to one of the driving gears.

[0008] As a further improvement of the present technical solution, the fixing mechanism includes a limit block fixedly connected to the rotating rod on one side of the protective shell, the outer wall of the limit block is evenly provided with clamping blocks, the top of the protective shell is fixedly connected with a mounting block, the inside of the mounting block is fixedly connected with a fixing rod, the outer wall of the fixing rod is rotatably connected with a positioning rod, and the side of the positioning rod close to the limit block is clamped in the gap between two adjacent clamping blocks, the side of the mounting block away from the resistor body is fixedly connected with a support plate, the support plate is fixedly connected with a No. 1 reset spring, and the side of the No. 1 reset spring away from the support plate is fixedly connected to the bottom of the positioning rod.

[0009] As a further improvement of the present technical solution, a plurality of rectangular grooves are provided on the inner wall of the protective shell, telescopic rods are fixedly connected inside the rectangular grooves, a movable block is fixedly connected to the side of the telescopic rod away from the rectangular grooves, and a No. 2 return spring is sleeved on the outer wall of the telescopic rod.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the corrosion-resistant and wear-resistant thermal resistor, the positioning rod is manually pressed to move the positioning rod out of the gap between the two blocks, and then the rotating rod is manually rotated to cooperate with the driving gear, the ring gear and the spur rack to drive the fixed plate to move, so as to clamp and fix the outer wall of the resistor body, so that not only the protective shell can be quickly disassembled and installed, but also the resistor bodies of different diameters can be clamped and fixed, thereby improving the adaptability of the device; and after adjusting the clamping mechanism, the positioning rod is manually loosened, and the rotating rod can be quickly limited by the elastic movement of the positioning rod, thereby ensuring the stability of the clamping mechanism after clamping and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the first cross-sectional structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the second cross-sectional structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0016] Figure 5 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Resistor body; 2. Protective shell; 3. Clamping mechanism; 31. Partition; 32. Spur rack; 33. Fixed plate; 34. Ring gear; 4. Driving mechanism; 41. Driving gear; 42. Rotating rod; 5. Fixing mechanism; 51. Limit block; 52. Mounting block; 53. Fixed rod; 54. Positioning rod; 55. No. 1 reset spring; 6. Telescopic rod; 7. Movable block; 8. No. 2 reset spring. DETAILED DESCRIPTION

[0019] 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 without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 5 As shown, this embodiment provides a corrosion-resistant and wear-resistant thermal resistor, including a resistor body 1, a protective shell 2 is sleeved on the outer wall of the resistor body 1, and a clamping mechanism 3 is fixedly connected to the inner wall of the protective shell 2, which is used to fix the protective shell 2 on the outer wall of the resistor body 1 to realize the disassembly and replacement of the protective shell 2. The protective shell 2 is internally rotatably connected to a driving mechanism 4 for driving the clamping mechanism 3 to move, thereby driving the clamping mechanism 3 to clamp and fix the resistor body 1, and a fixing mechanism 5 for limiting the driving mechanism 4 is fixedly connected to the top of the protective shell 2, thereby ensuring the stability of the driving mechanism 4.

[0021] The improvement of this embodiment is that:

[0022] At present, most of the protection of thermal resistors against corrosion and wear is carried out by installing a protective shell on the outside of the thermal resistor. Generally, the thermal resistor protective shell is integrated with the thermal resistor. Therefore, when the protective shell is worn or damaged, it is often necessary to directly replace the entire thermal resistor, which increases the cost of use. There are also some protective shells that are disassembled by bolts, but the size between the protective shell and the thermal resistor is fixed, so that the diameter of the protective shell cannot be adjusted to fix it according to the different diameters of the thermal resistor, which reduces the applicability of the device. Therefore, by setting a clamping mechanism 3 in conjunction with a driving mechanism 4, not only can the protective shell 2 be quickly disassembled and installed, but also the resistor bodies 1 of different diameters can be clamped and fixed, thereby improving the adaptability of the device, and a fixing mechanism 5 is set to limit the adjusted clamping mechanism 3, thereby ensuring the stability of the clamping mechanism 3 and the driving mechanism 4, and improving the use effect of the device.

[0023] Considering the need to fix the protective shell 2 and the resistor body 1, the structure of the clamping mechanism 3 is further disclosed, such as Figure 3 and Figure 4 As shown, the clamping mechanism 3 includes a partition 31 fixedly connected to the inner wall of the protective shell 2. A groove is opened inside the protective shell 2, and the partition 31 is located inside the groove. The partition 31 is fixedly connected to the inside of the groove. A plurality of spur racks 32 are slidably connected above the partition 31. The spur racks 32 are fixedly connected to a fixed plate 33 on one side close to the resistor body 1. The fixed plate 33 is made of rubber on one side close to the resistor body 1. The rubber has good wear resistance and corrosion resistance. A ring gear 34 is rotatably connected to the bottom of the partition 31.

[0024] In order to drive the clamping mechanism 3 to move, the structure of the driving mechanism 4 is further disclosed, such as Figure 3 and Figure 4 As shown, the driving mechanism 4 includes a plurality of driving gears 41 rotatably connected above the groove, the upper ends of the plurality of driving gears 41 are meshedly connected with adjacent spur racks 32, and the lower ends of the plurality of driving gears 41 are meshedly connected with the annular gear 34, and a rotating rod 42 is rotatably connected with the top of the protective shell 2, the bottom of the rotating rod 42 passes through the top of the protective shell 2, and the bottom of the rotating rod 42 is fixedly connected with one of the driving gears 41. The rotating rod 42 located outside the protective shell 2 is manually rotated to drive the driving gear 41 fixedly connected to the rotating rod 42 to rotate, thereby driving the annular gear 34 to mesh and rotate, and then driving the other driving gears 41 to rotate. The driving gear 41 rotates, driving the spur rack 32 to move, thereby driving the fixing plate 33 to move, thereby fixing the protective shell 2 to the outer wall of the resistor body 1.

[0025] Considering the stability of the clamping mechanism 3 after adjustment, the structure of the fixing mechanism 5 is further disclosed. Figure 5As shown, the fixing mechanism 5 includes a limit block 51 fixedly connected to the rotating rod 42 on one side of the protective shell 2, and the outer wall of the limit block 51 is evenly provided with card blocks. The top of the protective shell 2 is fixedly connected to a mounting block 52, and the mounting block 52 is fixedly connected to a fixing rod 53. The outer wall of the fixing rod 53 is rotatably connected to a positioning rod 54, and the side of the positioning rod 54 close to the limit block 51 is clamped in the gap between two adjacent card blocks. Pressing the positioning rod 54 can drive the positioning rod 54 to rotate, so that the positioning rod 54 can be moved from the two card blocks installed on the outer wall of the limit block 51. The mounting block 52 is moved out of the gap, and a support plate is fixedly connected to the side of the mounting block 52 away from the resistor body 1, and a No. 1 reset spring 55 is fixedly connected to the support plate, and a side of the No. 1 reset spring 55 away from the support plate is fixedly connected to the bottom of the positioning rod 54. A No. 1 reset spring 55 is provided. When the positioning rod 54 is manually released, the positioning rod 54 can be driven to reset and move under the action of the No. 1 reset spring 55 to restore the deformation, so that the positioning rod 54 can be clamped between the two clamping blocks installed on the outer wall of the limit block 51, thereby ensuring the stability of the clamping mechanism 3 after clamping and fixing.

[0026] In order to enhance the stability of the connection between the protective shell 2 and the resistor body 1, a plurality of rectangular grooves are provided on the inner wall of the protective shell 2, and telescopic rods 6 are fixedly connected to the inside of the rectangular grooves. A movable block 7 is fixedly connected to the side of the telescopic rod 6 away from the rectangular grooves, and a No. 2 reset spring 8 is provided on the outer wall of the telescopic rod 6. When the protective shell 2 is mounted on the outside of the resistor body 1, the resistor body 1 squeezes the movable block 7. However, under the action of the No. 2 reset spring 8, the movable block 7 can be driven to fit tightly against the outer wall of the resistor body 1.

[0027] When the utility model anti-corrosion and wear-resistant thermal resistor is used, the protective shell 2 is first sleeved on the outer wall of the resistor body 1, and then the positioning rod 54 is manually pressed. At this time, the No. 1 reset spring 55 is deformed, and the positioning rod 54 is moved out of the gap between the two blocks installed on the outer wall of the limit block 51. Then, the rotating rod 42 is manually rotated to drive the driving gear 41 fixedly connected to the rotating rod 42 to rotate, thereby driving the ring gear 34 to mesh and rotate, and then driving the other driving gears 41 to rotate. The driving gear 41 rotates, driving the spur rack 32 to move, thereby driving the fixing plate 33 to move, and the outer wall of the resistor body 1 is clamped and fixed;

[0028] After adjusting the clamping mechanism 3, manually loosen the positioning rod 54, and under the action of the No. 1 reset spring 55 to restore the deformation, drive the positioning rod 54 to reset and move, so that the positioning rod 54 can be clamped between the two clamping blocks installed on the outer wall of the limit block 51, ensuring the stability of the clamping mechanism 3 after clamping and fixing.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant and wear-resistant thermal resistor, comprising a resistor body (1), wherein the outer wall of the resistor body (1) is sleeved with a protective shell (2), characterized in that: The inner wall of the protective shell (2) is fixedly connected to a clamping mechanism (3) for fixing the protective shell (2) to the outer wall of the resistor body (1); the interior of the protective shell (2) is rotatably connected to a driving mechanism (4) for driving the clamping mechanism (3) to move; the top of the protective shell (2) is fixedly connected to a fixing mechanism (5) for limiting the driving mechanism (4).

2. The anti-corrosion and wear-resistant thermal resistor according to claim 1, characterized in that: The clamping mechanism (3) comprises a partition (31) fixedly connected to the inner wall of the protective shell (2); a groove is provided inside the protective shell (2), and the partition (31) is located inside the groove; a plurality of spur racks (32) are slidably connected above the partition (31); a fixing plate (33) is fixedly connected to one side of the spur racks (32) close to the resistor body (1); and a ring gear (34) is rotatably connected below the partition (31).

3. The anti-corrosion and wear-resistant thermal resistor according to claim 2, characterized in that: The driving mechanism (4) comprises a plurality of driving gears (41) rotatably connected above the groove, the upper ends of the plurality of driving gears (41) are meshedly connected with adjacent spur racks (32), and the lower ends of the plurality of driving gears (41) are meshedly connected with the ring gear (34), the top of the protective shell (2) is rotatably connected with a rotating rod (42), the bottom of the rotating rod (42) passes through the top of the protective shell (2), and the bottom of the rotating rod (42) is fixedly connected with one of the driving gears (41).

4. The anti-corrosion and wear-resistant thermal resistor according to claim 3, characterized in that: The fixing mechanism (5) comprises a limit block (51) fixedly connected to the rotating rod (42) on one side of the protective shell (2); the outer wall of the limit block (51) is evenly provided with clamping blocks; the top of the protective shell (2) is fixedly connected to a mounting block (52); the interior of the mounting block (52) is fixedly connected to a fixing rod (53); the outer wall of the fixing rod (53) is rotatably connected to a positioning rod (54); and the side of the positioning rod (54) close to the limit block (51) is clamped in the gap between two adjacent clamping blocks; the side of the mounting block (52) away from the resistor body (1) is fixedly connected to a support plate; the support plate is fixedly connected to a No. 1 reset spring (55); and the side of the No. 1 reset spring (55) away from the support plate is fixedly connected to the bottom of the positioning rod (54).

5. The anti-corrosion and wear-resistant thermal resistor according to claim 1, characterized in that: The inner wall of the protective shell (2) is provided with a plurality of rectangular grooves, each of which is fixedly connected to a telescopic rod (6), a movable block (7) is fixedly connected to a side of the telescopic rod (6) away from the rectangular groove, and a No. 2 return spring (8) is sleeved on the outer wall of the telescopic rod (6).

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