Pressure transmitter capable of preventing pressure impact

Abstract

The utility model relates to the technical field of pressure transmitters, in particular to a pressure transmitter capable of preventing pressure impact, which comprises a transmitter body, the top of the transmitter body is fixedly connected with a delivery pipe, and the bottom end of the transmitter body is fixedly connected with a communicating pipe. According to the pressure reducing device, after strong airflow is blown into the pressure reducing cylinder from the connector, the lifting plate can be driven to rise under the pushing of wind pressure, then the sliding sleeve can be driven to rise together, the driving block and the spiral groove in the outer wall of the column body can be driven to slide when the sliding sleeve is in sliding connection with the column body, and therefore the column body can be driven to rotate in the positioning ring; when the column body drives the rotating shaft to rotate, the plurality of fan-shaped baffle plates rotate together, so that the fan-shaped baffle plates rotate to the fan-shaped holes, the fan-shaped holes can be overlapped and shielded, the air inlet quantity at the fan-shaped holes is reduced, and the damage to the internal diaphragm of the transmitter caused by strong airflow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, and particularly relates to a pressure transmitter for preventing pressure impact. Background Technique

[0002] A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. It can convert physical pressure parameters such as gas and liquid sensed by a pressure measuring element sensor into a standard electric signal to supply secondary instruments such as indicating alarm instruments, recorders, and regulators for measurement, indication, and process adjustment, making the transmission effect of gas better. In typical mobile machinery and industrial hydraulics, if extreme working conditions such as instantaneous impact and high-frequency impact are not considered during design, any conventional pressure sensor will be damaged by the instantaneous strong airflow impact, which requires us to use an impact-resistant pressure sensor. The pressure sensor with a strain-type chip has an impact resistance of 1.5 times the full scale, but in actual applications, the sensor is still easily broken down and damaged at the moment when the pneumatic equipment starts. Content of the Utility Model

[0003] The purpose of the utility model is to provide a pressure transmitter for preventing pressure impact to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A pressure transmitter for preventing pressure impact includes a transmitter body. A delivery pipe is fixedly connected to the top of the transmitter body. A communication pipe is fixedly connected to the bottom end of the transmitter body. A decompression cylinder communicated with the inside thereof is fixedly connected to the bottom end of the communication pipe. A disc is fixedly sleeved inside the decompression cylinder. A plurality of fan-shaped holes are annularly and equidistantly formed in the disc. A rotating shaft is rotatably connected to the central position of the disc. A plurality of fan-shaped baffles are annularly and equidistantly fixedly connected to the outer wall of the rotating shaft. A column is fixedly connected to the top end of the rotating shaft. A sliding sleeve is slidably connected to the outside of the column. A positioning ring fixedly connected to the inner wall of the decompression cylinder is rotatably sleeved on the top end of the column.

[0006] Furthermore, a driving block is fixedly connected to the inner wall of the sliding sleeve. A spiral groove slidably and embeddedly connected with the driving block is formed on the outer wall of the column.

[0007] Furthermore, lifting plates are fixedly connected to the opposite outer walls of the sliding sleeve. A limiting rod is slidably connected to the lifting plate. The limiting rod is fixedly connected to the inner wall of the decompression cylinder. A return spring is sleeved on the outside of the limiting rod.

[0008] Furthermore, a wind pressure plate is fixedly connected between the outer walls of the two lifting plates.

[0009] Furthermore, a connector is fixedly connected to the bottom end of the pressure reducing cylinder, and a filter mesh is fixedly connected inside the connector.

[0010] Furthermore, a limiting ring is fixedly connected to the outer wall of the pressure reducing cylinder, and two rotatably connected collars are sleeved outside the limiting ring. L-shaped columns are fixedly connected to the ends of both collars, and a U-shaped frame is inserted between the two L-shaped columns.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. When a strong air current blows into the pressure reducing cylinder from the connector, under the push of the wind pressure, the lifting plate will be driven to rise, and then the sliding sleeve will be driven to rise together. When the sliding sleeve and the column are slidably connected, the driving block will be driven to slide along the spiral groove on the outer wall of the column, so as to drive the column to rotate in the positioning ring. During the rotation of the column driving the rotating shaft, a plurality of sector baffles will rotate together, so that the sector baffles will rotate to the position of the sector holes, thus overlapping and blocking the sector holes, reducing the air intake at the sector holes, avoiding damage to the internal diaphragm of the transmitter caused by strong air currents, and improving the service life of the pressure transmitter. When the air pressure weakens, the return spring will squeeze the lifting plate to rebound to its original position, so that the sliding sleeve will drive the driving block to slide downward in the spiral groove, and then the column can drive the rotating shaft and the sector baffles on the outer wall to rotate back, and then the sector holes can be completely opened, so that the pressure transmitter can be used normally.

[0013] 2. By arranging a filter mesh in the connector, the air introduced into the pressure transmitter is filtered, preventing damage inside the transmitter caused by excessive impurities in the air. By arranging collars and a U-shaped frame outside the pressure reducing cylinder, the two ends of the U-shaped frame are connected to the collars by bolts, and the U-shaped frame is used to facilitate the fixed installation of the pressure transmitter on the pipeline. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic sectional structure diagram of the pressure reducing cylinder in the present utility model;

[0016] Figure 3 is a schematic diagram of the collar structure in the present utility model;

[0017] Figure 4 is a schematic diagram of the internal structure of the pressure reducing cylinder in the present utility model;

[0018] Figure 5 is a schematic diagram of the connection structure of the sector baffle in the present utility model;

[0019] Figure 6It is a schematic diagram of the sliding sleeve connection structure in the present utility model.

[0020] In the figure: 101, transmitter body; 102, conveying pipe; 103, connecting pipe; 201, pressure reducing cylinder; 202, limiting ring; 203, connector; 204, filter mesh; 205, disc; 206, fan-shaped hole; 207, rotating shaft; 208, fan-shaped baffle; 209, cylinder; 210, spiral groove; 211, positioning ring; 212, sliding sleeve; 213, driving block; 214, lifting plate; 215, limiting rod; 216, return spring; 217, wind pressing plate; 301, ferrule; 302, L-shaped column; 303, U-shaped frame. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 6 , in the embodiment of the present utility model, a pressure transmitter for preventing pressure shock includes a transmitter body 101. The top of the transmitter body 101 is fixedly connected with a conveying pipe 102, the bottom end of the transmitter body 101 is fixedly connected with a connecting pipe 103, the bottom end of the connecting pipe 103 is fixedly connected with a pressure reducing cylinder 201 communicated with its interior. A disc 205 is fixedly sleeved inside the pressure reducing cylinder 201. A plurality of fan-shaped holes 206 are annularly and equidistantly formed in the disc 205. A rotating shaft 207 is rotatably connected to the center position of the disc 205. A plurality of fan-shaped baffles 208 are annularly and equidistantly fixedly connected to the outer wall of the rotating shaft 207. The top end of the rotating shaft 207 is fixedly connected with a cylinder 209. A sliding sleeve 212 is slidably connected to the outside of the cylinder 209. A positioning ring 211 fixedly connected to the inner wall of the pressure reducing cylinder 201 is rotatably sleeved at the top end of the cylinder 209; a driving block 213 is fixedly connected to the inner wall of the sliding sleeve 212. A spiral groove 210 slidably engaged with the driving block 213 is formed in the outer wall of the cylinder 209; a wind pressing plate 217 is fixedly connected between the outer walls of the two lifting plates 214.

[0023] Specifically, when a strong air current is blown from the connector 203 into the pressure reducing cylinder 201, the lifting plate 214 will be driven to rise under the push of the wind pressure. Then, the sliding sleeve 212 will be driven to rise together. When the sliding sleeve 212 is slidably connected to the column 209, the driving block 213 will be driven to slide along the spiral groove 210 on the outer wall of the column 209, so as to drive the column 209 to rotate in the positioning ring 211. When the column 209 drives the rotating shaft 207 to rotate, a plurality of sector baffles 208 will rotate together. Thus, the sector baffle 208 will rotate to the position of the sector hole 206, so as to overlap and block the sector hole 206, thereby reducing the air intake at the sector hole 206, avoiding damage to the internal diaphragm of the transmitter caused by the strong air current, and improving the service life of the pressure transmitter.

[0024] Embodiment 1

[0025] As Figure 5 shown, in this embodiment, lifting plates 214 are fixedly connected to the opposite outer walls of the sliding sleeve 212. A limiting rod 215 is slidably connected to the lifting plate 214. The limiting rod 215 is fixedly connected to the inner wall of the pressure reducing cylinder 201, and a return spring 216 is sleeved outside the limiting rod 215.

[0026] In this embodiment, when the air pressure weakens, the return spring 216 will squeeze the lifting plate 214 to rebound to its original position. Thus, the sliding sleeve 212 will drive the driving block 213 to slide downward in the spiral groove 210. Then, the column 209 can drive the rotating shaft 207 and the sector baffle 208 on the outer wall to rotate back, and then the sector hole 206 can be completely opened, so that the pressure transmitter can be used normally.

[0027] Embodiment 2

[0028] As Figure 3 shown, in this embodiment, a connector 203 is fixedly connected to the bottom end of the pressure reducing cylinder 201, and a filter mesh 204 is fixedly connected inside the connector 203; a limiting ring 202 is fixedly connected to the outer wall of the pressure reducing cylinder 201, and two rotatably connected collars 301 are sleeved outside the limiting ring 202. L-shaped columns 302 are fixedly connected to the ends of the two collars 301, and a U-shaped frame 303 is inserted between the two L-shaped columns 302.

[0029] During specific implementation, by arranging the filter mesh 204 in the connector 203, the air introduced into the pressure transmitter is filtered, so as to prevent damage inside the transmitter caused by too many impurities in the air. By arranging the collars 301 and the U-shaped frame 303 outside the pressure reducing cylinder 201, the two ends of the U-shaped frame 303 are connected to the collars 301 through bolts, and the U-shaped frame 303 is used to facilitate the fixed installation of the pressure transmitter on the pipeline.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure transmitter for preventing pressure shock, characterized in that, It includes a transmitter body (101). A conveying pipe (102) is fixedly connected to the top of the transmitter body (101). A communicating pipe (103) is fixedly connected to the bottom end of the transmitter body (101). A pressure reducing cylinder (201) communicated with its interior is fixedly connected to the bottom end of the communicating pipe (103). A disc (205) is fixedly sleeved inside the pressure reducing cylinder (201). A plurality of sector holes (206) are annularly and equidistantly formed in the disc (205). A rotating shaft (207) is rotatably connected to the central position of the disc (205). A plurality of sector baffles (208) are annularly and equidistantly fixedly connected to the outer wall of the rotating shaft (207). A cylinder (209) is fixedly connected to the top end of the rotating shaft (207). A sliding sleeve (212) is slidably connected to the outside of the cylinder (209). A positioning ring (211) fixedly connected to the inner wall of the pressure reducing cylinder (201) is rotatably sleeved on the top end of the cylinder (209).

2. The pressure transmitter for preventing pressure shock according to claim 1, wherein, A driving block (213) is fixedly connected to the inner wall of the sliding sleeve (212). A spiral groove (210) slidably and embeddedly connected with the driving block (213) is formed on the outer wall of the cylinder (209).

3. A pressure transmitter for preventing pressure shock according to claim 1, characterized in that, Lifting plates (214) are fixedly connected to the opposite outer walls of the sliding sleeve (212). A limiting rod (215) is slidably connected to the lifting plate (214). The limiting rod (215) is fixedly connected to the inner wall of the pressure reducing cylinder (201). A return spring (216) is sleeved on the outside of the limiting rod (215).

4. The pressure transmitter for preventing pressure shock according to claim 3, characterized in that, A wind pressing plate (217) is fixedly connected between the outer walls of the two lifting plates (214).

5. A pressure transmitter for preventing pressure shock according to claim 4, characterized in that, A connecting head (203) is fixedly connected to the bottom end of the pressure reducing cylinder (201). A filter mesh sheet (204) is fixedly connected inside the connecting head (203).

6. The pressure transmitter for preventing pressure shock according to claim 5, characterized in that, ​

Images