Dustproof temperature transmitter

Abstract

The utility model discloses a dustproof temperature transmitter, which relates to the field of temperature transmitters, and comprises a temperature transmitter body, a temperature sensing rod is arranged at the lower end of the temperature transmitter body, an inner ring pipe is arranged at the lower end of the temperature transmitter body, a filter screen is arranged in the inner ring pipe, and the temperature sensing rod is arranged in the inner ring pipe. A threaded rod is rotationally connected into the inner ring pipe, and the outer end of the threaded rod is in threaded connection with a movable ring. A filter screen is arranged in an inner ring pipe, dust can be effectively prevented from adhering to a temperature sensing rod, a moving ring, a threaded rod, a screen cleaning plate, a rod cleaning plate and a first motor are arranged, dust in the filter screen and dust adhering to the surface of the temperature sensing rod can be swept, and the swept and fallen dust falls into a dust accumulation box to be collected; the device not only can achieve a dustproof effect, but also can clean the filter screen, and is simple in structure, good in dustproof effect and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature transmitters, and particularly relates to a dust-proof temperature transmitter. Background Technique

[0002] A temperature transmitter is a device that converts a temperature signal into an electrical signal output, and is commonly used for temperature monitoring and control in industrial automation control systems. It can measure various temperature media, such as liquids, gases, steam, etc. According to different usage environments and functional requirements, temperature transmitters can be divided into various types, such as thermocouple temperature transmitters, thermal resistance temperature transmitters, integrated temperature transmitters, etc.

[0003] However, for the existing temperature transmitters, the temperature sensing rods used for sensing temperature are generally directly exposed to the air, and dust will adhere to their outer ends. Especially in places with relatively harsh usage environments and more dust, more dust will adhere to their outer ends. When the dust covers the outer ends of the temperature sensing rods, it will affect their sensitivity, resulting in a slower or inaccurate response of the temperature transmitter to temperature changes, which may affect its performance, leading to inaccurate measurement or equipment failure.

[0004] In order to solve this technical problem, the utility model proposes a dust-proof temperature transmitter. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a dust-proof temperature transmitter, which can effectively solve the problems mentioned in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A dust-proof temperature transmitter includes a temperature transmitter body. A temperature sensing rod is arranged at the lower end of the temperature transmitter body. An inner ring tube is arranged at the lower end of the temperature transmitter body. A filter screen is arranged inside the inner ring tube. A threaded rod is rotatably connected inside the inner ring tube. A moving ring is threadedly connected to the outer end of the threaded rod. A cleaning net plate is connected to the outer end of the moving ring. A cleaning rod plate is connected to the inner side of the moving ring. A first motor is connected to the lower end of the inner ring tube. A conical sleeve is arranged at the lower end of the inner ring tube. An outer protective tube is rotatably connected to the outer end of the inner ring tube. A communication groove is formed inside the outer protective tube. A connecting cylinder is arranged at the lower end of the outer protective tube. A second motor is arranged at the lower end of the first motor. An ash collecting box is threadedly connected to the lower end of the outer protective tube.

[0008] Preferably, a connecting sleeve is arranged at the lower end of the temperature transmitter body. A threaded groove is formed inside the connecting sleeve. A connecting head is connected to the upper end of the inner ring tube. The connecting head is threadedly connected inside the connecting sleeve.

[0009] Preferably, the side ends of the screen cleaning plate and the rod cleaning plate are both provided with cleaning brushes, the screen cleaning plate is slidably connected to the inner side of the filter screen, the rod cleaning plate is slidably connected to the outer end of the temperature sensing rod, and the screen cleaning plate is located at the lower end of the rod cleaning plate.

[0010] Preferably, the driving end of the No. 1 motor is connected to a gear, the lower end of the threaded rod is connected to a gear, the gear is meshed with the gear of the driving end of the No. 1 motor, and the threaded rod is rotatably connected in the conical sleeve.

[0011] Preferably, the lower end of the conical sleeve is connected to a protective shell, the No. 1 motor and the No. 2 motor are located in the protective shell, the connecting tube is rotatably connected to the outer end of the protective shell, and the driving end of the No. 2 motor is connected to the connecting tube.

[0012] Preferably, the conical sleeve is located at the lower end of the temperature sensing rod, the connecting tube is located in the ash box, the outer end of the inner ring tube is connected to a seal, the seal is located on both sides of the filter screen, the seal is slidably connected to the inner wall of the outer protective tube, and the connecting groove can be connected to the filter screen.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, a filter is provided in the inner ring tube, which can effectively prevent dust from adhering to the temperature sensing rod, thereby ensuring that the temperature sensing rod can work normally; by providing a moving ring and a threaded rod, starting the No. 1 motor will drive the threaded rod to rotate, and the rotation of the threaded rod and the action of the moving ring will enable it to move in the inner ring tube, so that the cleaning plate and the filter act together, and the cleaning plate and the outer end of the temperature sensing rod act together, thereby being able to clean the dust in the filter and the dust adhering to the surface of the temperature sensing rod, and the dust that falls after cleaning will fall into the dust box and be collected, thereby avoiding pollution of the surrounding environment; the device can not only play a dust-proof effect, but also can clean the filter; it has a simple structure, good dust-proof effect and high practicality.

[0015] In the utility model, an outer protective tube and a No. 2 motor are provided. When the device is not in use, the No. 2 motor is started, and the No. 2 motor drives the outer protective tube to rotate at the outer end of the inner ring tube through the connecting tube, so that the connecting groove of the outer protective tube and the filter screen of the inner ring tube are staggered, so that air cannot enter the device, and dust will not contaminate the temperature sensing rod. In this way, the temperature sensing rod is protected and the service life of the device can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a dust-proof temperature transmitter of the utility model;

[0017] Figure 2 This is a schematic diagram of the temperature sensing rod structure of a dustproof temperature transmitter of the utility model;

[0018] Figure 3 Schematic diagram of the connector structure of a dust-proof temperature transmitter of the present utility model;

[0019] Figure 4 Schematic diagram of the outer protection tube structure of a dust-proof temperature transmitter of the present utility model;

[0020] Figure 5 Schematic diagram of the inner ring tube structure of a dust-proof temperature transmitter of the present utility model;

[0021] Figure 6 Schematic diagram of the threaded rod structure of a dust-proof temperature transmitter of the present utility model;

[0022] Figure 7 Schematic diagram of the sectional structure of a dust-proof temperature transmitter of the present utility model;

[0023] Figure 8 For a dust-proof temperature transmitter of the present utility model Figure 7 Schematic diagram of area A.

[0024] In the figure: 1. Temperature transmitter body; 2. Temperature sensing rod; 3. Inner ring tube; 4. Filter screen; 5. Threaded rod; 6. Moving ring; 7. Cleaning net plate; 8. Cleaning rod plate; 9. First motor; 10. Conical sleeve; 11. Outer protection tube; 12. Communication groove; 13. Connecting cylinder; 14. Second motor; 15. Ash accumulation box; 16. Connecting sleeve; 17. Connector; 18. Protective shell; 19. Sealing strip. Specific implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0026] As Figures 1-8 shown, a dust-proof temperature transmitter includes a temperature transmitter body 1. A temperature sensing rod 2 is arranged at the lower end of the temperature transmitter body 1. A connecting sleeve 16 is arranged at the lower end of the temperature transmitter body 1. A threaded groove is opened in the connecting sleeve 16. An inner ring tube 3 is arranged at the lower end of the temperature transmitter body 1. The upper end of the inner ring tube 3 is connected with a connector 17. The connector 17 is threadedly connected in the connecting sleeve 16. The inner ring tube 3 can be connected to the lower end of the temperature transmitter body 1 through the connector 17 and the connecting sleeve 16, and the temperature sensing rod 2 will be located inside the inner ring tube 3.

[0027] A filter screen 4 is arranged inside the inner ring tube 3, and the filter screen 4 is used to filter the dust in the air entering the inner ring tube 3. A threaded rod 5 is rotatably connected inside the inner ring tube 3. A No. 1 motor 9 is connected to the lower end of the inner ring tube 3. A gear is connected to the driving end of the No. 1 motor 9. The lower end of the threaded rod 5 is connected to a gear, and the gear is meshed with the gear at the driving end of the No. 1 motor 9. When the No. 1 motor 9 is started, the threaded rod 5 will be driven to rotate through the gear. A moving ring 6 is threadedly connected to the outer end of the threaded rod 5. The rotation of the threaded rod 5 and the action of the moving ring 6 will enable the moving ring 6 to move inside the inner ring tube 3. A cleaning plate 7 is connected to the outer end of the moving ring 6. The moving ring 6 A rod cleaning plate 8 is connected to the inside, and cleaning brushes are provided on the side ends of the screen cleaning plate 7 and the rod cleaning plate 8. The screen cleaning plate 7 is slidably connected to the inner side of the filter screen 4, so that the screen cleaning plate 7 can clean the dust in the filter screen 4 under the drive of the moving ring 6. The rod cleaning plate 8 is slidably connected to the outer end of the temperature sensing rod 2. At this time, the rod cleaning plate 8 can clean the dust adhered to the outer end of the temperature sensing rod 2 under the drive of the moving ring 6. The screen cleaning plate 7 is located at the lower end of the rod cleaning plate 8. When cleaning the filter screen 4, the dust falling in the filter screen 4 may adhere to the temperature sensing rod 2, and the rod cleaning plate 8 is at the upper end of the screen cleaning plate 7, so that this part of the dust can be cleaned.

[0028] The outer end of the inner ring tube 3 is rotatably connected to the outer protective tube 11, and a connecting groove 12 is opened in the outer protective tube 11. The outer end of the inner ring tube 3 is connected to a seal 19, and the seals 19 are located on both sides of the filter screen 4. The seal 19 is slidably connected to the inner wall of the outer protective tube 11. The connecting groove 12 can be connected to the filter screen 4, so that air can enter the inner ring tube 3 normally. The lower end of the outer protective tube 11 is threadedly connected to the dust box 15, and the lower end of the outer protective tube 11 is provided with a connecting tube 13. The lower end of the No. 1 motor 9 is provided with a No. 2 motor 14. Starting the No. 2 motor 14 will drive the outer protective tube 11 to rotate through the connecting tube 13, so that the connecting groove 12 can be connected to the filter screen 4, and the two can also be staggered.

[0029] A conical sleeve 10 is provided at the lower end of the inner ring tube 3, and the threaded rod 5 is rotatably connected in the conical sleeve 10. The conical sleeve 10 is located at the lower end of the temperature sensing rod 2. Dust falling from the surface of the temperature sensing rod 2 will fall on the conical sleeve 10, and then the dust will slide down along the inclined surface of the conical sleeve 10, and finally fall into the dust storage box 15. A protective shell 18 is connected to the lower end of the conical sleeve 10, and the No. 1 motor 9 and the No. 2 motor 14 are located in the protective shell 18. The connecting tube 13 is rotatably connected to the outer end of the protective shell 18, and the driving end of the No. 2 motor 14 is connected to the connecting tube 13, and the connecting tube 13 is located in the dust storage box 15.

[0030] When the temperature transmitter body 1 is working normally, the communication groove 12 opened in the outer protection tube 11 is communicated with the filter screen 4 in the inner ring tube 3 at this time. In this way, air can act on the temperature sensing rod 2 through the communication groove 12 and the filter screen 4, and the filter screen 4 can filter the dust in the air entering the inner ring tube 3. When it is necessary to clean the dust, the second motor 14 is started to drive the outer protection tube 11 to rotate outside the outer end of the inner ring tube 3 through the connecting cylinder 13, so that the communication groove 12 is staggered from the filter screen 4. Under the action of the seal 19, it is difficult for the outside air to enter the inner ring tube 3. The first motor 9 is started to drive the threaded rod 5 to rotate through the gear. In this way, the moving ring 6 can move in the inner ring tube 3, so that the cleaning plate 7 can clean the filter screen 4 and the cleaning rod plate 8 can clean the outer end of the temperature sensing rod 2. Since the outer protection tube 11 wraps the inner ring tube 3, the dust falling from the filter screen 4 and the temperature sensing rod 2 will not fall to the ground and will fall into the dust collecting box 15. In this way, it can avoid polluting the surrounding environment.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof temperature transmitter, comprising a temperature transmitter body (1), characterized in that: The lower end of the temperature transmitter body (1) is provided with a temperature sensing rod (2), the lower end of the temperature transmitter body (1) is provided with an inner ring tube (3), a filter screen (4) is provided in the inner ring tube (3), a threaded rod (5) is rotatably connected in the inner ring tube (3), a moving ring (6) is threadedly connected at the outer end of the threaded rod (5), a screen cleaning plate (7) is connected at the outer end of the moving ring (6), a rod cleaning plate (8) is connected on the inner side of the moving ring (6), and the inner ring The lower end of the tube (3) is connected to a No. 1 motor (9), the lower end of the inner ring tube (3) is provided with a conical sleeve (10), the outer end of the inner ring tube (3) is rotatably connected to an outer protective tube (11), a connecting groove (12) is provided in the outer protective tube (11), a connecting tube (13) is provided at the lower end of the outer protective tube (11), a No. 2 motor (14) is provided at the lower end of the No. 1 motor (9), and the lower end of the outer protective tube (11) is threadedly connected to an ash box (15).

2. A dustproof temperature transmitter according to claim 1, characterized in that: The lower end of the temperature transmitter body (1) is provided with a connecting sleeve (16), a thread groove is provided in the connecting sleeve (16), and the upper end of the inner ring tube (3) is connected with a connecting head (17), and the connecting head (17) is threadedly connected in the connecting sleeve (16).

3. The dustproof temperature transmitter according to claim 1, characterized in that: The side ends of the screen cleaning plate (7) and the rod cleaning plate (8) are both provided with cleaning brushes; the screen cleaning plate (7) is slidably connected to the inner side of the filter screen (4); the rod cleaning plate (8) is slidably connected to the outer end of the temperature sensing rod (2); and the screen cleaning plate (7) is located at the lower end of the rod cleaning plate (8).

4. The dustproof temperature transmitter according to claim 1, characterized in that: The driving end of the first motor (9) is connected to a gear, and the lower end of the threaded rod (5) is connected to a gear, which meshes with the gear at the driving end of the first motor (9), and the threaded rod (5) is rotatably connected in the conical sleeve (10).

5. The dustproof temperature transmitter according to claim 1, characterized in that: The lower end of the conical sleeve (10) is connected to a protective shell (18), the first motor (9) and the second motor (14) are located in the protective shell (18), the connecting tube (13) is rotatably connected to the outer end of the protective shell (18), and the driving end of the second motor (14) is connected to the connecting tube (13).

6. The dustproof temperature transmitter according to claim 1, characterized in that: The conical sleeve (10) is located at the lower end of the temperature sensing rod (2), the connecting tube (13) is located in the dust box (15), the outer end of the inner ring tube (3) is connected with a seal (19), the seal (19) is located on both sides of the filter screen (4), the seal (19) is slidably connected to the inner wall of the outer protective tube (11), and the connecting groove (12) can be connected with the filter screen (4).

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