Pressure transmitter

Abstract

The utility model relates to the technical field of transmitters, and discloses a pressure transmitter which comprises a shell, a threaded groove is formed in the bottom of the outer wall of the shell, a spring is fixedly connected to the middle of the inner wall of the shell, a fixing plate is fixedly connected to the inner wall of the shell, clamping grooves are formed in the front side and the rear side of the outer wall of the fixing plate, and the clamping grooves are matched with the threaded groove. A mounting seat is arranged at the bottom end of the inner wall of the shell, clamping blocks are fixedly connected to the front side and the rear side of the inner wall of the mounting seat, the outer walls of the two clamping blocks are clamped to the inner walls of the two clamping grooves correspondingly, a connecting cover is arranged at the bottom end of the outer wall of the shell, and the inner wall of the connecting cover is in threaded connection with the outer wall of the threaded groove. And a dehumidification mechanism is arranged on the rear side of the outer wall of the shell. According to the utility model, by screwing out the connecting cover and pushing the mounting seat, after the clamping block is separated from the clamping groove, the mounting seat is taken out by rotation, complicated tools are not needed, the dismounting steps are simplified, and the dismounting time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of transmitter technology, and in particular to a pressure transmitter. Background Technology

[0002] In the petrochemical, power, metallurgical and cement industries, pressure transmitters are used to monitor and control pressure parameters in the production process to ensure safe and stable operation. In cement production lines, pressure transmitters need to be installed at key locations such as the kiln head, kiln tail, top and bottom of each stage of preheater, secondary air ducts and cooler chambers to monitor the normal operation of the process.

[0003] A pressure transmitter consists of a pressure sensor, a measurement circuit, a signal processing circuit, a display unit, a power module, and a housing and connectors. Its main function is to perform preliminary processing of the electrical signal output from the pressure sensor, amplifying the weak signal to increase its amplitude and meet the input requirements of subsequent signal processing circuits. Currently, in pressure transmitters, the sensor and measurement circuit module are fixed together with numerous screws and clips, resulting in a compact layout. Disassembly requires multiple tools and a specific sequence, increasing the operational difficulty. Existing solutions decompose the pressure transmitter into independent functional modules with quick-connect interfaces. During maintenance, no other components need to be disassembled; the module can be separated simply by pressing the unlock button. However, to ensure connection stability, the pressure transmitter's plug-in interfaces still require specialized tools for disassembly, demanding a high level of skill from maintenance personnel. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pressure transmitter that aims to improve the problem that in the prior art, the plug-in interface of the pressure transmitter still requires special tools to disassemble in order to ensure connection stability, which requires a high level of operational proficiency from maintenance personnel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressure transmitter, comprising a housing, a threaded groove formed at the bottom of the outer wall of the housing, a spring fixedly connected to the middle of the inner wall of the housing, a fixing plate fixedly connected to the inner wall of the housing, slots formed on the front and rear sides of the outer wall of the fixing plate, a mounting base provided at the bottom of the inner wall of the housing, and locking blocks fixedly connected to the front and rear sides of the inner wall of the mounting base, the outer walls of the two locking blocks respectively engaging with the inner walls of the two locking slots, and a connecting cover provided at the bottom of the outer wall of the housing, the inner wall of the connecting cover being threadedly connected to the outer wall of the threaded groove.

[0006] Preferably, the rear side of the outer wall of the housing is further provided with a dehumidification mechanism for dehumidifying the water vapor adhering to the surface of the electronic components. The dehumidification mechanism includes a fixed box, the front side of the outer wall of the fixed box is fixedly connected to the rear side of the outer wall of the housing, the front side of the inner wall of the fixed box is fixedly connected to a connecting plate, the middle part of the inner wall of the connecting plate is fixedly connected to a semiconductor cooling chip, the middle part of the inner wall of the fixed box is fixedly connected to a fixed column, the inner wall of the fixed column is fixedly connected to a motor, and the output end of the motor is rotatably connected to a rotating fan.

[0007] Preferably, the outer wall of the connecting cover is provided with a mounting groove, and the inner wall of the mounting groove is provided with a reflective sticker.

[0008] Preferably, a second mounting groove is provided on the front side of the outer wall of the outer casing, and an indicator light is fixedly connected to the inner wall of the second mounting groove.

[0009] Preferably, the bottom left and right sides of the outer casing are provided with mounting grooves 3, and arrows are fixedly connected to the inner walls of the two mounting grooves 3.

[0010] Preferably, a fixing block is fixedly connected to the rear side of the inner wall of each of the two mounting slots, and an indicator light is fixedly connected to the outer wall of each of the two fixing blocks.

[0011] Preferably, the outer wall of the fixed box is provided with a connecting groove on both the left and right sides, and a warning sign is fixedly connected to the inner wall of each of the two connecting grooves.

[0012] Preferably, a second connecting groove is provided on the rear side of the outer wall of the fixed box, and a protective net is fixedly connected to the inner wall of the second connecting groove.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the operation process of unscrewing the connecting cover and pushing the mounting base to disengage the locking block from the slot, and then rotating to remove the mounting base, requires no complicated tools, simplifies the disassembly steps, greatly shortens the disassembly time, facilitates the inspection and replacement of internal components, improves maintenance efficiency, and enhances the practicality and convenience of the pressure transmitter.

[0015] 2. In this utility model, the semiconductor cooling chip and the rotating fan work together. The semiconductor cooling chip cools and causes water vapor to condense, while the rotating fan accelerates airflow, effectively improving dehumidification efficiency, quickly removing water vapor from the surface of electronic components, avoiding damage and performance degradation of components due to moisture, and ensuring stable operation of the pressure transmitter. Attached Figure Description

[0016] Figure 1 This is a front view of a pressure transmitter proposed in this utility model;

[0017] Figure 2This is a perspective view of a pressure transmitter proposed in this utility model;

[0018] Figure 3 This is a partial structural exploded view of a pressure transmitter proposed in this utility model;

[0019] Figure 4 This is a cross-sectional view of the dehumidification mechanism of a pressure transmitter proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the protective mesh of a pressure transmitter proposed in this utility model;

[0021] Figure 6 This is a structural exploded view of the card block of a pressure transmitter proposed in this utility model.

[0022] Legend:

[0023] 1. Outer casing; 2. Dehumidification mechanism; 201. Fixing box; 202. Connecting plate; 203. Semiconductor cooling chip; 204. Fixing column; 205. Motor; 206. Rotating fan; 3. Threaded groove; 4. Spring; 5. Fixing plate; 6. Slot; 7. Mounting base; 8. Locking block; 9. Connecting cover; 10. Mounting slot one; 11. Reflective sticker; 12. Mounting slot two; 13. Indicator light; 14. Mounting slot three; 15. Arrow; 16. Fixing block; 17. Indicator light; 18. Connecting slot one; 19. Warning sign; 20. Connecting slot two; 21. Protective net. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 , Figure 3 and Figure 6This utility model provides an embodiment of a pressure transmitter, including a housing 1. A threaded groove 3 is provided at the bottom of the outer wall of the housing 1 to provide an installation interface for a connecting cover 9. A spring 4 is fixedly connected to the middle of the inner wall of the housing 1. When the locking block 8 is installed, the spring 4 can exert a downward pressing force. A fixing plate 5 is fixedly connected to the inner wall of the housing 1. The front and rear sides of the outer wall of the fixing plate 5 are provided with locking grooves 6, which cooperate with the locking block 8 on the mounting base 7. A mounting base 7 is provided at the bottom of the inner wall of the housing 1. Through the engagement with the fixing plate 5 and the cooperation with the housing 1, the pressure transmitter is secured. To ensure the stability of the components during operation, preventing displacement or loosening, the inner wall of the mounting base 7 is fixedly connected with locking blocks 8 on both the front and rear sides, forming a locking connection with the locking grooves 6 on the fixing plate 5. The outer walls of the two locking blocks 8 are respectively locked with the inner walls of the two locking grooves 6. A connecting cover 9 is provided at the bottom of the outer wall of the housing 1, which is connected through the threaded engagement between the inner wall and the threaded groove 3. The connecting cover 9 can further enhance the sealing performance of the housing 1, and can be easily disassembled and installed during the installation and maintenance of the pressure transmitter. The inner wall of the connecting cover 9 is threadedly connected to the outer wall of the threaded groove 3.

[0026] Specifically, the housing 1, as the main body of the pressure transmitter, provides protection and a mounting base for the internal components, resisting interference from the external environment. The threaded groove 3 is opened at the bottom of the outer wall of the housing 1, and its function is to connect with the connecting cover 9 by threads, facilitating disassembly and installation, and enabling operation inside the housing 1. The spring 4 is fixed in the middle of the inner wall of the housing 1, and can undergo elastic deformation when subjected to pressure, playing a role in buffering and transmitting pressure, ensuring the stability of the internal structure. The fixing plate 5 is used to fix and support the locking block 8, and the locking groove 6 opened on it cooperates with the locking block 8 of the mounting seat 7 to achieve quick positioning and fixing of the mounting seat 7, ensuring installation accuracy. The mounting seat 7 is firmly installed inside the housing 1 through the engagement of the locking block 8 and the locking groove 6, and is used to support and install the core sensing components. The connecting cover 9 is threadedly connected to the threaded groove 3, which can close the bottom of the housing 1, protect the internal structure, and facilitate opening when maintenance or repair is required.

[0027] Reference Figure 2 , Figure 4 and Figure 5The outer wall of the outer casing is also provided with a dehumidification mechanism for dehumidifying the moisture adhering to the surface of electronic components. The dehumidification mechanism 2 includes a fixed box 201, the front side of the outer wall of the fixed box 201 is fixedly connected to the rear side of the outer wall of the outer casing 1, and a connecting plate 202 is fixedly connected to the front side of the inner wall of the fixed box 201. The fixed box 201 serves as the carrier of the dehumidification mechanism 2, and is integrated with the pressure transmitter body by being fixedly connected to the rear side of the outer wall of the outer casing 1 through the front side of the outer wall. A semiconductor cooling chip 203 is fixedly connected to the middle of the inner wall of the connecting plate 202. The heat generated by the semiconductor cooling chip 203 during operation can... The power is quickly transmitted. A fixed column 204 is fixedly connected to the middle of the inner wall of the fixed box 201, which provides a stable support point for the motor 205. This prevents the motor 205 from shifting or loosening due to vibration during operation, and ensures that the motor 205 can output power stably to drive the rotating fan 206 to operate normally. The motor 205 is fixedly connected to the inner wall of the fixed column 204. The output end of the motor 205 is rotatably connected to the rotating fan 206. After the motor 205 is powered on, it uses the principle of electromagnetic induction to convert electrical energy into mechanical energy, drive the rotor to rotate, and thus drive the rotating fan 206 at the output end to rotate.

[0028] Specifically, the fixed box 201 serves as the main body of the dehumidification mechanism 2. Its outer front wall is fixedly connected to the outer rear wall of the outer shell 1, providing installation space and a protective barrier for the internal components. The connecting plate 202 is fixed to the inner front wall of the fixed box 201 to support and fix the semiconductor cooling chip 203, ensuring its stable operation. The semiconductor cooling chip 203, based on the Peltier effect, can quickly cool down after being powered on, lowering the ambient air temperature and causing water vapor to condense into water droplets, thereby achieving dehumidification. The fixed column 204 is fixed in the middle of the inner wall of the fixed box 201, providing a stable installation position for the motor 205. After the motor 205 is powered on, the output end drives the rotating fan 206 to rotate at high speed, generating airflow and accelerating air flow. The cooled air from the semiconductor cooling chip 203 is blown onto the surface of the electronic components, accelerating the condensation speed of water vapor and blowing away the condensed water droplets, further enhancing the dehumidification effect.

[0029] Reference Figure 1 , Figure 2 and Figure 5The outer wall of the connecting cover 9 has a mounting groove 10, and the inner wall of the mounting groove 10 has a reflective sticker 11. The reflective sticker 11 can reflect the weak light in the surrounding area, so that the operator can more clearly observe the position and status of the connecting cover 9. The front side of the outer wall of the outer shell 1 has a mounting groove 2 12, and the inner wall of the mounting groove 2 12 is fixedly connected to an indicator light 13. The indicator light 13 intuitively provides feedback to the operator on the working status of the pressure transmitter through different colors and flashing frequencies. The bottom left and right sides of the outer shell 1 both have mounting grooves 3 14, and the inner walls of the two mounting grooves 3 14 are fixedly connected to arrows 15. The arrows 15 serve as installation guides and directional indicators. During the installation of the pressure transmitter, the operator can quickly determine the correct installation direction of the equipment according to the direction of the arrows 15.

[0030] Specifically, a fixed position is provided for the reflective sticker 11. The reflective sticker 11 is made of reflective material and can reflect light under illumination, making it easier for operators to quickly identify and locate the pressure transmitter in low-light environments, thus improving operational convenience. The mounting groove 12 on the front side of the outer wall of the housing 1 has an indicator light 13 fixedly connected to its inner wall. It can obtain signals through circuit connection. When the working status of the pressure transmitter changes, the indicator light 13 lights up with different colors of light, intuitively conveying the operation of the equipment to the operator. The arrow 15 is used to indicate the installation direction of the pressure transmitter or the direction of fluid flow, helping operators to correctly install and use the equipment and avoid measurement errors or equipment damage caused by incorrect direction.

[0031] Reference Figure 2 , Figure 4 and Figure 6 Two mounting slots 14 have fixed blocks 16 on their inner rear sides, and two fixed blocks 16 have indicator lights 17 on their outer walls. The indicator lights 17 receive signals through circuit connections and can light up under specific working conditions. The outer walls of the fixed box 201 have connecting slots 18 on both the left and right sides. The inner walls of the two connecting slots 18 have warning signs 19 fixedly connected to them. The warning signs 19 are marked with equipment operation specifications and safety precautions. When personnel approach the equipment, they can clearly display important prompts and play a role in safety warning and operation guidance. The outer walls of the fixed box 201 have connecting slots 20 on their rear sides, and the inner walls of connecting slots 20 have protective nets 21 fixedly connected to them. Connecting slots 20 and protective nets 21 play a protective role, jointly ensuring the safe and stable operation of the equipment and improving the reliability and safety of the equipment.

[0032] Specifically, the changing light of the indicator light 17 visually displays the operating status of the equipment to the operator. The outer wall of the fixed box 201 has a connecting groove 18 on the left and right sides, and a warning sign 19 is fixed on the inner wall. The markings or text on the warning sign 19 can warn personnel of potential dangers and prevent accidents. The outer wall of the fixed box 201 has a connecting groove 20 on the rear side, and a protective net 21 is fixed on the inner wall, which can effectively prevent foreign objects from entering the fixed box 201 and protect the internal components from damage.

[0033] Working principle: The mounting base 7 is fixed to the bottom of the inner wall of the outer shell 1 by engaging with the locking blocks 8 on the front and back sides of its inner wall and the locking grooves 6 on the front and back sides of the outer wall of the fixing plate 5. The spring 4 is fixed to the middle of the inner wall of the outer shell 1. The connecting cover 9 is installed at the bottom of the outer wall of the outer shell 1 by threaded connection between the inner wall and the threaded groove 3 at the bottom of the outer wall of the outer shell 1. When disassembly is required, first rotate the connecting cover 9 out of the threaded groove 3, then push the mounting base 7 towards the inner wall of the outer shell 1 to disengage the locking blocks 8 from the locking grooves 6. Then rotate the mounting base 7 to the corresponding removal port to remove the mounting base 7 from the inner wall of the outer shell 1, thus achieving quick disassembly.

[0034] Furthermore, when the dehumidification mechanism 2 is activated, the motor 205 located inside the fixed box 201 starts to operate, and its output drives the rotating fan 206 to rotate. At the same time, the semiconductor cooling chip 203 fixed in the middle of the inner wall of the connecting plate 202 starts to work. The semiconductor cooling chip 203 cools down the air temperature inside the fixed box 201, and water vapor condenses into water droplets when it encounters the cold. The rotating fan 206 accelerates the air flow, allowing the air containing water vapor to continuously flow towards the semiconductor cooling chip 203, thereby improving the dehumidification efficiency. After the air containing water vapor is cooled by the semiconductor cooling chip 203, the water vapor condenses, thereby achieving dehumidification of the water vapor adhering to the surface of electronic components. The fixed box 201 is fixedly connected to the rear side of the outer wall of the outer shell 1 through its front outer wall, ensuring a stable connection between the dehumidification mechanism 2 and the outer shell 1, so that the dehumidification work can be carried out continuously and stably.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure transmitter comprising a housing (1), characterized in that: The outer wall of the outer shell (1) has a threaded groove (3) at the bottom. A spring (4) is fixedly connected to the middle of the inner wall of the outer shell (1). A fixing plate (5) is fixedly connected to the upper middle part of the inner wall of the outer shell (1). The front and rear sides of the outer wall of the fixing plate (5) have slots (6). The bottom of the inner wall of the outer shell (1) is provided with a mounting base (7). The front and rear sides of the inner wall of the mounting base (7) are fixedly connected with locking blocks (8). The outer walls of the two locking blocks (8) are respectively engaged with the inner walls of the two slots (6). The bottom of the outer wall of the outer shell (1) is provided with a connecting cover (9). The inner wall of the connecting cover (9) is threadedly connected to the outer wall of the threaded groove (3).

2. A pressure transmitter according to claim 1, characterized in that: The outer wall of the outer casing (1) is also provided with a dehumidification mechanism (2) for dehumidifying the water vapor adhering to the surface of electronic components. The dehumidification mechanism (2) includes a fixed box (201). The front side of the outer wall of the fixed box (201) is fixedly connected to the rear side of the outer wall of the outer casing (1). A connecting plate (202) is fixedly connected to the front side of the inner wall of the fixed box (201). A semiconductor cooling chip (203) is fixedly connected to the middle of the inner wall of the connecting plate (202). A fixed column (204) is fixedly connected to the middle of the inner wall of the fixed box (201). A motor (205) is fixedly connected to the inner wall of the fixed column (204). A rotating fan (206) is rotatably connected to the output end of the motor (205).

3. The pressure transmitter of claim 1 wherein: The outer wall of the connecting cover (9) is provided with an installation groove (10), and the inner wall of the installation groove (10) is provided with a reflective sticker (11).

4. The pressure transmitter of claim 1, wherein: The outer wall of the outer shell (1) is provided with a second mounting groove (12), and an indicator light (13) is fixedly connected to the inner wall of the second mounting groove (12).

5. The pressure transmitter of claim 1, wherein: The bottom left and right sides of the outer shell (1) are provided with mounting grooves three (14), and arrows (15) are fixedly connected to the inner walls of the two mounting grooves three (14).

6. A pressure transmitter according to claim 5, wherein: Fixing blocks (16) are fixedly connected to the rear side of the inner wall of each of the two mounting slots (14), and indicator lights (17) are fixedly connected to the outer wall of each of the two fixing blocks (16).

7. The pressure transmitter of claim 2 wherein: The outer wall of the fixed box (201) is provided with a connecting groove (18) on both the left and right sides, and a warning sign (19) is fixedly connected to the inner wall of both connecting grooves (18).

8. The pressure transmitter of claim 2, wherein: The outer wall of the fixed box (201) is provided with a connecting groove two (20), and a protective net (21) is fixedly connected to the inner wall of the connecting groove two (20).

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