Pressure transmitter with anti-blocking function

Abstract

The utility model relates to the technical field of pressure transmitters, in particular to a pressure transmitter with an anti-blocking function, which comprises a pressure transmitter body, the upper side of the outer surface of the pressure transmitter body is fixedly connected with an arc-shaped connecting block, the front end of the arc-shaped connecting block is provided with a first threaded hole penetrating front and back, and the front end of the arc-shaped connecting block is provided with a second threaded hole penetrating back and forth. A fixing plate is fixedly connected to the lower side of the outer surface of the pressure transmitter body, a mounting device is fixedly connected to the lower end of the fixing plate in a penetrating manner, a pressure tapping pipe is fixedly connected to the lower part of the outer surface of the mounting device, a cleaning device is fixedly connected to the upper part of the outer surface of the pressure tapping pipe, and a filtering device is clamped to the inner wall surface of the pressure tapping pipe. According to the pressure transmitter with the anti-blocking function, the problem that the pressure tapping pipe is easy to block is effectively solved through multiple designs, the small air pump is matched with the L-shaped reverse blowing pipeline, reverse blowing airflow can be emitted into the pressure tapping pipe regularly, impurities on the pipe wall and the filter screen are blown off, and the blocking risk is further reduced.

Description

Technical Field

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

[0002] In traditional pressure transmitter applications, the pressure tapping pipe is easily clogged by impurities, particles, and flocculent matter in the medium. For example, in chemical production, impurities produced by the reaction mix into the medium and accumulate in the pressure tapping pipe over time, hindering the flow of the medium and leading to inaccurate or even impossible pressure measurements. Once a traditional pressure transmitter becomes clogged, maintenance is cumbersome, often requiring maintenance personnel to disassemble the entire transmitter and clean each of the complex internal components, consuming a significant amount of time and manpower. In oil pipeline pressure measurement, for instance, the transmitter may be installed in a remote location with a complex installation structure, making disassembly and reinstallation extremely difficult. Utility Model Content

[0003] The main objective of this invention is to provide a pressure transmitter with anti-clogging function, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A pressure transmitter with anti-clogging function includes a pressure transmitter body. An arc-shaped connecting block is fixedly connected to the upper side of the outer surface of the pressure transmitter body. The front end of the arc-shaped connecting block has a first threaded hole that passes through from front to back. A fixing plate is fixedly connected to the lower side of the outer surface of the pressure transmitter body. An installation device is inserted and fixedly connected to the lower end of the fixing plate. A pressure tapping pipe is fixedly connected to the lower part of the outer surface of the installation device. A cleaning device is fixedly connected to the upper part of the outer surface of the pressure tapping pipe. A filter device is snapped into the inner wall of the pressure tapping pipe.

[0006] The cleaning device includes an arc-shaped mounting frame. Each of the four corners of the left end of the arc-shaped mounting frame is fixedly connected with a locking rod. The four locking rods are connected to a connecting cover. An installation groove is provided inside the arc-shaped mounting frame. A small air pump is fixedly connected to the upper and lower walls of the installation groove. An L-shaped backflush pipe is fixedly installed on the right side of the outer surface of the small air pump. The right end of the arc-shaped mounting frame is fixedly connected to the left side of the outer surface of the pressure tapping pipe.

[0007] Preferably, the four locking rods are connected to the connecting cover by a slot-type engagement, and the connecting cover has slots corresponding to the positions of the four locking rods.

[0008] By adopting the above technical solution, the clamp and connecting cover are connected by a slot-type snap-fit ​​mechanism. Installation is simple; aligning the clamps with the slots allows for easy connection. Disassembly can be done by hand. This greatly simplifies the maintenance process of the cleaning device, allowing maintenance personnel to quickly open the connecting cover and inspect internal components such as the small air pump, thus improving maintenance efficiency.

[0009] Preferably, the end of the L-shaped backflush pipe furthest from the small air pump is sequentially inserted into the arc-shaped mounting frame and the pressure tapping pipe, and extends into the interior of the pressure tapping pipe.

[0010] By adopting the above technical solution, the L-shaped backflush pipe is designed to precisely deliver the backflush airflow generated by the small air pump directly to the core area inside the pressure tapping pipe. This effectively cleans impurities adhering to the pipe wall and filter device, greatly reducing the risk of pressure tapping pipe blockage, ensuring accurate pressure transmitter measurements, and maintaining stable operation.

[0011] Preferably, the mounting device includes a mounting plate, a bolt is inserted and fixedly connected inside the mounting plate, a pentagonal nut is threaded onto the outer surface of the bolt, a condensation bend is inserted and connected inside the pentagonal nut, and the upper end of the mounting plate is fixedly connected to the lower end of the fixing plate.

[0012] By adopting the above technical solution: the installation device is ingeniously designed, with the mounting plate and fixing plate firmly connected, providing reliable support. The bolts and pentagonal nuts facilitate adjustment of the condenser bend's installation position, and the interference fit ensures the condenser bend is securely fixed, guaranteeing its stable condensation function and improving the overall stability of the pressure transmitter.

[0013] Preferably, the pentagonal nut and the condenser bend are interlocked with an interference fit.

[0014] By adopting the above technical solution, the five-pointed nut and the condenser bend are interference-fitted, and the strong friction generated by their tight fit can firmly fix the condenser bend. This prevents displacement due to vibration, media impact, or other factors during equipment operation, ensuring that the condenser bend can stably perform its condensation function and guaranteeing the normal operation of the pressure transmitter.

[0015] Preferably, the filtering device includes an annular connecting ring block, the outer surface of which has six second threaded holes, each of which is threaded with a screw, and the outer surface of each of the six screws is provided with a rubber ring. The inner wall of the annular connecting ring block is embedded with a stainless steel woven mesh, and the outer surface of the annular connecting ring block is snapped onto the lower part of the inner wall of the pressure tapping tube.

[0016] By adopting the above technical solution: the annular connecting ring of the filter device is snapped into the pressure tapping pipe, making installation convenient and secure. The stainless steel woven mesh effectively filters impurities, ensuring accurate pressure measurement. Six screws, in conjunction with rubber rings, not only strengthen the fixation but also improve sealing performance, preventing leakage of unfiltered media and ensuring long-term stable operation of the device.

[0017] Preferably, the ends of the six screws near the center of the annular connecting ring are threaded to the lower part of the outer surface of the pressure tapping tube and extend into the corresponding second threaded holes.

[0018] By adopting the above technical solution—where one end of each of the six screws is threaded to the lower outer surface of the pressure tapping tube and extends to the second threaded hole—the annular connecting ring can be firmly fixed to the pressure tapping tube from both the inner and outer sides. This ensures the stability of the filter device, prevents displacement due to media impact, guarantees its continuous and effective filtration of impurities, and improves the accuracy of pressure measurement.

[0019] Preferably, the six rubber rings are tightly fitted onto the screw portion of the six screws and are located between the heads of the six screws and the outer surface of the annular connecting ring block.

[0020] By adopting the above technical solution, six rubber rings are fitted onto the screw shaft, providing a seal between the screw head and the annular connecting ring, preventing media leakage from the gap between the screw and the threaded hole. Simultaneously, the elasticity of the rubber rings buffers the screw tightening force, preventing damage to the annular connecting ring and ensuring stable operation of the filtration device.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This utility model effectively addresses the problem of easy clogging in pressure tapping pipes through multiple design features. Inside the pressure tapping pipe, a stainless steel woven mesh is embedded in the inner wall of the annular connecting ring, forming a filter device that accurately intercepts impurities, particles, and flocculent matter in the medium, preventing their accumulation inside the pipe, ensuring smooth medium flow, and maintaining accurate pressure measurement. Furthermore, a small air pump in the cleaning device works in conjunction with an L-shaped backflush pipe to periodically inject backflush air into the pressure tapping pipe, blowing off impurities adhering to the pipe wall and filter mesh, further reducing the risk of clogging, ensuring long-term stable operation of the pressure transmitter, and continuously providing accurate pressure data.

[0023] 2. In this utility model, the design of this device focuses on improving the ease of maintenance. The connecting cover of the cleaning device uses a slot and a lever to engage, allowing maintenance personnel to easily open it by hand without complicated tools, quickly inspecting and maintaining internal components such as the small air pump. As for the filter device, the annular connecting ring and the pressure tapping tube adopt a specific snap-fit ​​structure, and the screw connection part is cleverly designed for easy disassembly. Maintenance personnel can easily remove the filter device for cleaning or replacement of parts, significantly shortening maintenance time. Even in remote scenarios with complex installation structures, such as oil pipelines, maintenance work can be completed efficiently, saving a lot of manpower and time costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a pressure transmitter with anti-clogging function according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the internal structure of the pressure tapping tube of a pressure transmitter with anti-clogging function according to this utility model.

[0026] Figure 3 This is a schematic diagram of the connection and disassembly structure of the installation device for a pressure transmitter with anti-clogging function according to this utility model;

[0027] Figure 4 This is a cross-sectional view of the cleaning device for a pressure transmitter with anti-clogging function according to this utility model.

[0028] Figure 5 This is a schematic diagram of the connection and disassembly structure of a filter device for a pressure transmitter with anti-clogging function according to this utility model.

[0029] In the diagram: 1. Pressure transmitter body; 2. Arc-shaped connecting block; 3. First threaded hole; 4. Fixing plate; 5. Mounting device; 6. Pressure tapping pipe; 7. Cleaning device; 8. Filtering device; 51. Mounting plate; 52. Bolt; 53. Pentagonal nut; 54. Condensation bend; 71. Arc-shaped mounting frame; 72. Clamping rod; 73. Connecting cover; 74. Mounting groove; 75. Small air pump; 76. L-shaped backflush pipe; 81. Annular connecting ring block; 82. Second threaded hole; 83. Screw; 84. Rubber ring; 85. Stainless steel woven mesh. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1-5 This utility model provides a technical solution:

[0034] A pressure transmitter with anti-clogging function includes a pressure transmitter body 1. An arc-shaped connecting block 2 is fixedly connected to the upper side of the outer surface of the pressure transmitter body 1. The front end of the arc-shaped connecting block 2 has a first threaded hole 3 that passes through from front to back. A fixing plate 4 is fixedly connected to the lower side of the outer surface of the pressure transmitter body 1. An installation device 5 is inserted and fixedly connected to the lower end of the fixing plate 4. A pressure tapping pipe 6 is fixedly connected to the lower part of the outer surface of the installation device 5. A cleaning device 7 is fixedly connected to the upper part of the outer surface of the pressure tapping pipe 6. A filter device 8 is snapped into the inner wall of the pressure tapping pipe 6.

[0035] In this embodiment, the cleaning device 7 includes an arc-shaped mounting frame 71. Four locking rods 72 are fixedly connected to the four corners of the left end of the arc-shaped mounting frame 71. The four locking rods 72 are connected to a connecting cover 73. An mounting groove 74 is provided inside the arc-shaped mounting frame 71. A small air pump 75 is fixedly connected to the upper and lower walls of the mounting groove 74. An L-shaped backflush pipe 76 is fixedly installed on the right side of the outer surface of the small air pump 75. The right end of the arc-shaped mounting frame 71 is fixedly connected to the left side of the outer surface of the pressure tapping pipe 6. The four locking rods 72 are engaged with the connecting cover 73 using a slotted connection. The connecting cover 73 has slots corresponding to the positions of the four locking rods 72. The end of the L-shaped backflush pipe 76 furthest from the small air pump 75 passes through the arc-shaped mounting frame 71 and the pressure tapping pipe 6, and extends... The filter device 8 includes an annular connecting ring block 81. The outer surface of the annular connecting ring block 81 has six second threaded holes 82, each of which is threaded with a screw 83. The outer surface of each of the six screws 83 is provided with a rubber ring 84. The inner wall of the annular connecting ring block 81 is embedded with a stainless steel woven mesh 85. The outer surface of the annular connecting ring block 81 is snapped onto the lower part of the inner wall of the pressure tapping tube 6. The end of each of the six screws 83 near the center of the annular connecting ring block 81 is threaded to the lower part of the outer surface of the pressure tapping tube 6 and extends into the corresponding second threaded hole 82. The six rubber rings 84 are tightly fitted onto the screw portion of each of the six screws 83 and are located between the head of the six screws 83 and the outer surface of the annular connecting ring block 81.

[0036] Through the above scheme, the cleaning device 7 and the filtering device 8 work together to ensure the normal operation of the pressure transmitter. In the cleaning device 7, the right end of the arc-shaped mounting frame 71 is fixed to the left side of the outer surface of the pressure tapping pipe 6, forming a stable support structure. The small air pump 75 is fixed in the mounting groove 74. After starting, it generates airflow, which is delivered to the inside of the pressure tapping pipe 6 through the L-shaped backflush pipe 76. The L-shaped backflush pipe 76 passes through the arc-shaped mounting frame 71 and the pressure tapping pipe 6, accurately guiding the backflush airflow into the pressure tapping pipe 6 to clean the pipe wall and internal components, preventing impurities from accumulating and clogging. The connecting cover 73 is engaged with four locking rods 72 through a slot, making it easy to open and maintain components such as the small air pump 75. As for the filtering device 8, the annular connecting ring 81 is engaged with the lower part of the inner wall of the pressure tapping pipe 6, and the stainless steel woven mesh 85 on its inner wall filters the medium entering the pressure tapping pipe 6. Six screws 83 pass through the second threaded holes 82 on the outer surface of the annular connecting ring block 81, with one end threaded to the lower part of the outer surface of the pressure tapping tube 6, thus fixing the annular connecting ring block 81. A rubber ring 84 is fitted onto the screw shank of the screw 83, located between the screw head and the outer surface of the annular connecting ring block 81, serving a sealing and tightening function to ensure stable operation of the filter device, effectively intercept impurities, and ensure accurate pressure measurement by the pressure transmitter.

[0037] In this embodiment, the mounting device 5 includes a mounting plate 51, a bolt 52 is fixedly connected inside the mounting plate 51, a pentagonal nut 53 is threaded on the outer surface of the bolt 52, a condenser bend 54 is connected inside the pentagonal nut 53, and the upper end of the mounting plate 51 is fixedly connected to the lower end of the fixing plate 4; the insertion point of the pentagonal nut 53 and the condenser bend 54 adopts an interference fit.

[0038] Through the above scheme: the upper end of the mounting plate 51 is welded to the lower end of the fixing plate 4 to provide a supporting foundation for the entire installation structure. The bolt 52 is inserted and fixed to the mounting plate 51, and its outer surface is threaded to the pentagonal nut 53. Rotating the pentagonal nut 53 can adjust its position on the bolt 52, so as to achieve the initial positioning of the condenser bend 54 in terms of installation height, angle, etc. The pentagonal nut 53 and the condenser bend 54 are interlocked, that is, the inner diameter of the pentagonal nut 53 is slightly smaller than the outer diameter of the condenser bend 54. During installation, the condenser bend 54 is forcibly pressed into the pentagonal nut 53. The two fit tightly and generate a large friction force, which can firmly fix the condenser bend 54 and prevent it from shifting during the operation of the pressure transmitter, so as to ensure that the condenser bend 54 can stably perform its condensation function.

[0039] It should be noted that this utility model is a pressure transmitter with anti-clogging function. In the process of use, firstly, the pressure transmitter body 1 is fixed in a suitable installation position through the first threaded hole 3 on the arc-shaped connecting block 2 using bolts and other connecting parts to achieve a stable installation. Next, a mounting device 5 is inserted and fixed at the lower end of the fixing plate 4 on the lower side of the outer surface of the pressure transmitter body 1. Specifically, the mounting plate 51 is connected to the fixing plate 4 by welding. Then, the bolt 52 is inserted through the mounting plate 51 and threadedly connected to the pentagram nut 53. Finally, the condenser bend 54 is inserted into the pentagram nut 53 and fixed by interference fit. Finally, the pressure tapping pipe 6 is fixed to the lower part of the outer surface of the mounting device 5, and the annular connecting ring 81 of the filter device 8 is snapped into the lower part of the inner wall of the pressure tapping pipe 6. The screw 83 is passed through the second threaded hole 82 and tightened to complete the installation. Inside the pressure tapping pipe 6, the stainless steel woven mesh 85 of the filter device 8 intercepts and filters impurities, particles and flocculent matter in the medium, ensuring that clean medium enters the pressure transmitter body 1 and ensuring the accuracy of pressure measurement. At the same time, the small air pump 75 in the cleaning device 7 starts at a set time interval, and emits backflush airflow into the pressure tapping pipe 6 through the L-shaped backflush pipe 76 to clean the impurities attached to the pipe wall and filter screen, reducing the risk of blockage. When maintenance is required, if the inside of the cleaning device 7 needs to be inspected, the maintenance personnel can open the connecting cover 73 by hand. Because it is connected to the clamp 72 by a slot, the operation is simple and the small air pump 75 and other components can be quickly maintained. For the filter device 8, the maintenance personnel unscrew the screw 83 and use the snap-fit ​​structure between the annular connecting ring 81 and the pressure tapping pipe 6 to easily remove the filter device for cleaning or replacement of parts, thus completing the maintenance work and ensuring the continuous and stable operation of the pressure transmitter.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure transmitter with anti-clogging function, comprising a pressure transmitter body (1), characterized in that: An arc-shaped connecting block (2) is fixedly connected to the upper side of the outer surface of the pressure transmitter body (1). The front end of the arc-shaped connecting block (2) is provided with a first threaded hole (3) that passes through from front to back. A fixing plate (4) is fixedly connected to the lower side of the outer surface of the pressure transmitter body (1). An installation device (5) is inserted and fixedly connected to the lower end of the fixing plate (4). A pressure tapping pipe (6) is fixedly connected to the lower part of the outer surface of the installation device (5). A cleaning device (7) is fixedly connected to the upper part of the outer surface of the pressure tapping pipe (6). A filter device (8) is snapped into the inner wall of the pressure tapping pipe (6). The cleaning device (7) includes an arc-shaped mounting frame (71). Each of the four corners of the left end of the arc-shaped mounting frame (71) is fixedly connected with a clamp (72). The four clamps (72) are connected to a connecting cover (73). An installation groove (74) is provided inside the arc-shaped mounting frame (71). A small air pump (75) is fixedly connected to the upper and lower walls of the installation groove (74). An L-shaped backflush pipe (76) is fixedly installed on the right side of the outer surface of the small air pump (75). The right end of the arc-shaped mounting frame (71) is fixedly connected to the left side of the outer surface of the pressure tapping pipe (6).

2. A pressure transmitter with anti-clogging function according to claim 1, characterized in that: The four locking rods (72) are connected to the connecting cover (73) by a slot-type snap-fit, and the connecting cover (73) has a slot for each of the four locking rods (72).

3. A pressure transmitter with anti-clogging function according to claim 1, characterized in that: The L-shaped backflush pipe (76) is inserted into the arc-shaped mounting frame (71) and the pressure tapping pipe (6) at the end away from the small air pump (75), and extends into the interior of the pressure tapping pipe (6).

4. A pressure transmitter with anti-clogging function according to claim 1, characterized in that: The mounting device (5) includes a mounting plate (51), a bolt (52) is inserted and fixedly connected inside the mounting plate (51), a pentagonal nut (53) is threaded on the outer surface of the bolt (52), a condenser bend (54) is inserted and connected inside the pentagonal nut (53), and the upper end of the mounting plate (51) is fixedly connected to the lower end of the fixing plate (4).

5. A pressure transmitter with anti-clogging function according to claim 4, characterized in that: The pentagonal nut (53) and the condenser bend (54) are interlocked by an interference fit.

6. A pressure transmitter with anti-clogging function according to claim 1, characterized in that: The filter device (8) includes an annular connecting ring block (81). The outer surface of the annular connecting ring block (81) is provided with six second threaded holes (82). Each of the six second threaded holes (82) is threaded with a screw (83). The outer surface of each of the six screws (83) is provided with a rubber ring (84). The inner wall of the annular connecting ring block (81) is embedded with a stainless steel woven mesh (85). The outer surface of the annular connecting ring block (81) is snapped onto the lower part of the inner wall of the pressure tapping tube (6).

7. A pressure transmitter with anti-clogging function according to claim 6, characterized in that: The six screws (83) are all threaded to the lower part of the outer surface of the pressure tapping tube (6) at the end near the center of the annular connecting ring (81) and extend into the corresponding second threaded hole (82).

8. A pressure transmitter with anti-clogging function according to claim 6, characterized in that: The six rubber rings (84) are tightly fitted onto the screw portion of the six screws (83) and are located between the head of the six screws (83) and the outer surface of the annular connecting ring block (81).

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