Pressure transmitter capable of self-zero calibration

Abstract

The utility model discloses a pressure transmitter capable of self-zero calibration, which relates to the technical field of pressure transmitters, and comprises a pressure transmitter body and a machine body, the lower part of the pressure transmitter body is fixedly connected with a mounting plate, and the upper part of the mounting plate is fixedly connected with the machine body. During use, a first motor drives a lead screw to rotate, a sliding block drives a moving block to move, after the front section of a rotating rod is connected with a zero setting screw on the surface of a pressure transmitter body, a second motor in the moving block is started to drive a rotating disc to rotate, and a rotating shaft above the rotating disc rotates; a second motor is started again to enable the rotating shaft to drive the rotating block to rotate again, the rotating shaft makes contact with an inductor in the rotating block, a rotating rod drives a zero setting screw to rotate, a sensor monitors whether the value of a pressure transmitter body is successfully set to zero or not, and when zero setting is not conducted, a second motor is started again to enable the rotating shaft to drive the rotating block to rotate again, and the zero setting screw is rotated step by step. And the output value of the pressure transmitter body is adjusted to zero.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a pressure transmitter capable of self-zeroing. Background Art

[0002] A pressure transmitter is a device used to measure, convert and transmit pressure signals. It is usually used in industrial automation control systems to convert pressure signals into standard signals (such as current signals or voltage signals) in order to monitor and control pressure values. The pressure values ​​are sensed through sensors or diaphragms and other components, and converted into electrical signals. The measured pressure signals are converted into standard analog signals (such as 4-20mA, 0-10V, etc.) or digital signals for transmission and processing. The converted signals are transmitted to the control system or display device to monitor the pressure values ​​in real time. The accuracy and stability of the pressure transmitter can be ensured by operations such as zeroing and adjusting the amount. Some pressure transmitters have an alarm function. When the pressure exceeds the set range, an alarm signal can be issued. Pressure transmitters are widely used in various fields, such as industrial production, chemical industry, petroleum, water treatment, medical equipment, etc., for monitoring and controlling various pressure parameters. The selection of pressure transmitters should be determined according to the specific application scenarios and requirements to ensure that they can work accurately and stably. The existing devices have poor zeroing effects when used and poor protection effects during use.

[0003] Therefore, we proposed a self-zeroing pressure transmitter to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a self-zeroing pressure transmitter to solve the problem that the self-zeroing pressure transmitter on the market currently has poor zeroing effect and poor protection effect when in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a pressure transmitter capable of self-zeroing, comprising a pressure transmitter body 1 and a body 21;

[0006] The pressure transmitter body 1 is fixedly connected to the mounting plate 2 at the bottom, and is fixedly connected to the machine body 21 at the top of the mounting plate 2, and the inside of the machine body 21 is connected to the fixing plate 5 via a buffer mechanism, the fixing plate 5 is fixedly connected to the sensor 6 at the top, and the sensor 6 is connected to the pressure transmitter body 1, and the sensor 6 is connected to the controller 7, and the controller 7 is connected to the timer 8 and the alarm 9;

[0007] The interior of the machine body 21 is fixedly connected to the first motor 10, and the front end of the first motor 10 is fixedly connected to the lead screw 11, and the lead screw 11 is threadedly connected to the slider 12, the top of the slider 12 is fixedly connected to the moving block 13, and the interior of the moving block 13 is fixedly connected to the second motor 14, and the front end of the second motor 14 is fixedly connected to the turntable 15, the surface of the turntable 15 is fixedly connected to the rotating shaft 16, and the rotating shaft 16 is engaged with the groove inside the rotating block 17, and the sensor 19 is arranged in the groove inside the rotating block 17, the surface of the pressure transmitter body 1 is arranged with a zero adjustment screw 20, the rotating block 17 is fixedly connected to the rotating rod 18, and the tail of the rotating rod 18 is rotatably connected to the interior of the moving block 13.

[0008] As a preferred technical solution of the present utility model, the mounting plate 2 is connected to the outside through bolts, and the bolts are symmetrically arranged about the center of the mounting plate 2, and the bolts are made of metal.

[0009] As a preferred technical solution of the utility model, the buffer mechanism includes a moving rod 3, a spring 4, and a fixed plate 5. The bottom of the moving rod 3 is slidably connected to the inside of the body 21, and the top of the moving rod 3 is fixedly connected to the bottom of the fixed plate 5, and a spring 4 is arranged on the surface of the moving rod 3.

[0010] As a preferred technical solution of the present utility model, the sensors 19 are arranged in an array inside the rotating block 17 , and the sensors 19 are all arranged in grooves inside the rotating block 17 .

[0011] As a preferred technical solution of the present utility model, the moving rod 3 is symmetrically arranged with respect to the center of the fixing plate 5 , and springs 4 are arranged on the surface of the moving rod 3 .

[0012] As a preferred technical solution of the present utility model, the sensor 6 is connected to the pressure transmitter body 1 through an electric wire, and a rubber gasket is provided at the contact position between the electric wire and the inner part of the body 21 .

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The device is provided with a zeroing structure. When in use, the first motor drives the lead screw to rotate, so that the slider drives the moving block to move, so that the front section of the rotating rod is connected with the zeroing screw on the surface of the pressure transmitter body. At this time, the second motor inside the moving block is started to drive the turntable to rotate, so that the rotating shaft above the turntable rotates, so that the rotating shaft and the sensor inside the rotating block are in contact, and at the same time, the rotating rod drives the zeroing screw to rotate, and at the same time, the sensor is used to monitor whether the value of the pressure transmitter body is successfully zeroed. If it is not zeroed, the second motor is started again to make the rotating shaft drive the rotating block to rotate again, and the zeroing screw is gradually rotated to adjust the output value of the pressure transmitter body to zero;

[0015] 2. The device is provided with a protection mechanism. When in use, the sensor monitors the value of the pressure transmitter body all the time. When the output of the pressure transmitter body exceeds the preset range, the alarm inside the body is activated by the controller to sound an alarm, and at the same time, the second motor inside the body is started to rotate the rotating rod for zeroing. At the same time, the alarm reminds the staff to monitor. When shaking occurs during use, the fixed plate drives the moving rod to slide inside the body through the spring, buffering the equipment above to prevent damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixed plate structure of the utility model;

[0018] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the side structure of the turntable of the utility model.

[0020] In the figure: 1. Pressure transmitter body; 2. Mounting plate; 3. Moving rod; 4. Spring; 5. Fixed plate; 6. Sensor; 7. Controller; 8. Timer; 9. Alarm; 10. First motor; 11. Screw; 12. Slider; 13. Moving block; 14. Second motor; 15. Turntable; 16. Rotating shaft; 17. Rotating block; 18. Rotating rod; 19. Sensor; 20. Zero adjustment screw; 21. Machine body. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 , the utility model provides a technical solution: a pressure transmitter capable of self-zeroing, comprising a pressure transmitter body 1 and a body 21;

[0023] The pressure transmitter body 1 is fixedly connected to the mounting plate 2 at the bottom, and the mounting plate 2 is connected to the outside through bolts, and the bolts are symmetrically arranged about the center of the mounting plate 2, and the bolts are made of metal, and the mounting plate 2 is fixedly connected to the body 21 at the top, and the inside of the body 21 is connected to the fixing plate 5 through a buffer mechanism, and the buffer mechanism includes a moving rod 3, a spring 4, and a fixing plate 5, the bottom of the moving rod 3 is slidably connected to the inside of the body 21, and the top of the moving rod 3 is fixedly connected to the bottom of the fixing plate 5, and the surface of the moving rod 3 is provided with a spring 4, the moving rod 3 is symmetrically arranged about the center of the fixing plate 5, and the surface of the moving rod 3 is provided with a spring 4, the top of the fixing plate 5 is fixedly connected to the sensor 6, and the sensor 6 is connected to the pressure transmitter body 1, and the sensor 6 is connected to the controller 7, the sensor 6 is connected to the pressure transmitter body 1 through wires, and a rubber gasket is provided at the contact position between the wires and the inside of the body 21, and the controller 7 is connected to the timer 8 and the alarm 9;

[0024] At the same time, when in use, the sensor 6 monitors the value of the pressure transmitter body 1 all the time. When the output of the pressure transmitter body 1 exceeds the preset range, the controller 7 starts the alarm 9 inside the body 21 to sound an alarm, and at the same time starts the second motor 14 inside the body 21 to rotate the rotating rod 18 to perform zeroing. At the same time, the alarm 9 reminds the staff to monitor. When shaking occurs during use, the fixed plate 5 drives the moving rod 3 to slide inside the body 21 through the spring 4 to buffer the upper equipment to prevent damage;

[0025] The interior of the machine body 21 is fixedly connected to the first motor 10, and the front end of the first motor 10 is fixedly connected to the lead screw 11, and the lead screw 11 is threadedly connected to the slider 12, the top of the slider 12 is fixedly connected to the moving block 13, and the interior of the moving block 13 is fixedly connected to the second motor 14, and the front end of the second motor 14 is fixedly connected to the turntable 15, the surface of the turntable 15 is fixedly connected to the rotating shaft 16, and the rotating shaft 16 is engaged with the groove inside the rotating block 17, and the groove inside the rotating block 17 is provided with a sensor 19, the sensor 19 is arranged in an array with respect to the interior of the rotating block 17, and the sensors 19 are all arranged in the groove inside the rotating block 17, a zero adjustment screw 20 is arranged on the surface of the pressure transmitter body 1, the rotating block 17 is fixedly connected to the rotating rod 18, and the tail of the rotating rod 18 is rotatably connected to the interior of the moving block 13;

[0026] When in use, the mounting plate 2 is connected to the outside through bolts, and the pressure transmitter body 1 is connected to the outside at this time. When in use, the pressure value is displayed through the display screen on the surface of the pressure transmitter body 1. The internal timer 8 is set in advance. When the time of the timer 8 is reached, the controller 7 is started. At this time, the controller 7 starts the first motor 10 to drive the screw rod 11 to rotate, so that the slider 12 above the screw rod 11 drives the moving block 13 to move. At the same time, the moving block 13 drives the upper rotating rod 18 to slide inside the body 21, so that the front section of the rotating rod 18 is connected to the zeroing screw 20 on the surface of the pressure transmitter body 1. At this time, the second motor 14 inside the moving block 13 is started to drive the turntable 15 to rotate, so that the rotating shaft 16 above the turntable 15 rotates, so that the rotating shaft 16 rotates into the groove inside the rotating block 17, so that the rotating shaft 16 and the sensor 19 are in contact. At this time, the sensor 19 starts the controller 7 to stop the second motor 14 from rotating. At the same time, the rotating rod 18 drives the zeroing screw 20 to rotate. At the same time, the sensor 6 monitors whether the value of the pressure transmitter body 1 is successfully zeroed. If it is not zeroed, the second motor 14 is started again to make the rotating shaft 16 drive the rotating block 17 to rotate again, so that the rotating shaft 16 enters other grooves inside the rotating block 17, and drives the rotating block 17 to rotate a quarter each time, so that the rotating rod 18 drives the zeroing screw 20 to rotate a quarter for zeroing again, until the value of the pressure transmitter body 1 is successfully zeroed, and the zeroing screw 20 is gradually rotated to adjust the output value of the pressure transmitter body 1 to zero.

[0027] Working principle: When using a pressure transmitter with self-zero calibration, the mounting plate 2 is connected to the outside through bolts. At this time, the pressure transmitter body 1 is connected to the outside. When in use, the pressure value is displayed on the display screen on the surface of the pressure transmitter body 1. The internal timer 8 is set in advance. When the time of the timer 8 is reached, the controller 7 is started. At this time, the controller 7 starts the first motor 10 to drive the screw rod 11 to rotate, so that the slider 12 above the screw rod 11 drives the moving block 13 to move. At the same time, the moving block 13 drives the upper rotating rod 18 to slide inside the body 21, so that the front section of the rotating rod 18 is connected to the zeroing screw 20 on the surface of the pressure transmitter body 1. At this time, the second motor 14 inside the moving block 13 is started to drive the turntable 15 to rotate, so that the rotating shaft 16 above the turntable 15 rotates, so that the rotating shaft 16 rotates into the groove inside the rotating block 17, so that the rotating shaft 16 and the sensor 19 are in contact. At this time, the sensor 19 starts the controller 7 to stop the second motor 14 from rotating, and at the same time, the rotating rod 18 drives the zeroing screw 20 to Rotate, and monitor whether the value of the pressure transmitter body 1 is zeroed successfully through the sensor 6. When it is not zeroed, continue to start the second motor 14 so that the rotating shaft 16 drives the rotating block 17 to rotate again, so that the rotating shaft 16 enters other grooves inside the rotating block 17, and drives the rotating block 17 to rotate a quarter each time, so that the rotating rod 18 drives the zeroing screw 20 to rotate a quarter for zeroing again, until the value of the pressure transmitter body 1 is zeroed successfully, and gradually rotate the zeroing screw 20 to adjust the output value of the pressure transmitter body 1 to zero. At the same time, when in use, the sensor 6 always monitors the value of the pressure transmitter body 1. When the output of the pressure transmitter body 1 exceeds the preset range, the alarm 9 inside the body 21 is started by the controller 7 to alarm, and the second motor 14 inside the body 21 is started to rotate the rotating rod 18. At the same time, the alarm 9 reminds the staff to monitor. When shaking occurs during use, the fixed plate 5 drives the moving rod 3 to slide inside the body 21 through the spring 4 to buffer the equipment above to prevent damage.

[0028] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pressure transmitter capable of self-zeroing, comprising a pressure transmitter body (1) and a housing (21); Features: The pressure transmitter body (1) is fixedly connected to the mounting plate (2) at the bottom, and the mounting plate (2) is fixedly connected to the body (21) at the top, and the body (21) is connected to the fixing plate (5) via a buffer mechanism, the fixing plate (5) is fixedly connected to the sensor (6) at the top, and the sensor (6) is connected to the pressure transmitter body (1), and the sensor (6) is connected to the controller (7), and the controller (7) is connected to the timer (8) and the alarm (9); The interior of the machine body (21) is fixedly connected to the first motor (10), and the front end of the first motor (10) is fixedly connected to the screw rod (11), and the screw rod (11) is threadedly connected to the slider (12). The top of the slider (12) is fixedly connected to the moving block (13), and the interior of the moving block (13) is fixedly connected to the second motor (14), and the front end of the second motor (14) is fixedly connected to the turntable (15). The surface of the turntable (15) is fixedly connected to the rotating shaft (16), and the rotating shaft (16) is engaged with the groove inside the rotating block (17), and a sensor (19) is arranged in the groove inside the rotating block (17). A zero adjustment screw (20) is arranged on the surface of the pressure transmitter body (1), and the rotating block (17) is fixedly connected to the rotating rod (18), and the tail of the rotating rod (18) is rotatably connected to the interior of the moving block (13).

2. The self-zeroing pressure transmitter according to claim 1, characterized in that: The mounting plate (2) is connected to the outside via bolts, and the bolts are symmetrically arranged about the center of the mounting plate (2), and the bolts are made of metal.

3. The self-zeroing pressure transmitter according to claim 1, characterized in that: The buffer mechanism comprises a moving rod (3), a spring (4), and a fixed plate (5); the bottom of the moving rod (3) is slidably connected to the inside of the machine body (21), the top of the moving rod (3) is fixedly connected to the bottom of the fixed plate (5), and the surface of the moving rod (3) is provided with a spring (4).

4. The self-zeroing pressure transmitter according to claim 1, characterized in that: The sensors (19) are arranged in an array inside the rotating block (17), and the sensors (19) are all arranged in grooves inside the rotating block (17).

5. The self-zeroing pressure transmitter according to claim 3, characterized in that: The moving rod (3) is arranged symmetrically about the center of the fixed plate (5), and a spring (4) is arranged on the surface of the moving rod (3).

6. The self-zeroing pressure transmitter according to claim 1, characterized in that: The sensor (6) is connected to the pressure transmitter body (1) via an electric wire, and a rubber gasket is provided at the contact position between the electric wire and the inside of the body (21).

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