Air floating type scanning valve with pressure vibration

Abstract

A first air cylinder is arranged at one end of a valve body, a second air cylinder is arranged at the other end of the valve body, a structural body is arranged at the top of the valve body, a first push valve high-pressure air pipe opening on the left side is inserted into one end of the interior of the structural body, and a second push valve high-pressure air pipe opening is inserted into the other end of the interior of the structural body. Four air floatation holes are designed in four symmetrical points of the upper part of the structural body; the shell comprises a bottom plate, a top cover, a front side wall, a rear side wall, a left side wall and a right side wall; the problems that under the high-temperature condition, a structural body and a valve body are too large in left-right pushing friction force and even stuck due to the fact that a gasket is heated and expanded, the pressure measurement result is seriously affected, and the difference between the pressure measurement result and the actual result is too large are solved.

Description

Technical Field

[0001] The utility model relates to the field of scanning valves, in particular to an air-floating scanning valve with pressure vibration. Background Art

[0002] Pressure sensors can quickly measure the pressure on the surface of the medium and provide real-time feedback of pressure data. They have the advantages of simple, fast and accurate measurement and are widely used in machinery, industry and other fields.

[0003] During pressure measurement, the gas to be measured enters the structure through the inlet port on the outside, passes through the internal air path, and connects to the air path inside the valve body. The structure is fixed, while the valve body is movable. A gasket ensures a tight seal between the structure and the valve body. During measurement, the valve body reciprocates to measure the external air pressure.

[0004] Prior art 1

[0005] In order to ensure the airtight effect, a large pre-tightening pressure is generally applied externally between the structure and the valve body structure through screws. This will cause a large friction between the rubber gasket on the surface and the structure when the valve body moves back and forth, seriously affecting the push of the valve body and even causing it to get stuck. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides an air-floating scanning valve with pressure vibration, which solves the problem that under high temperature conditions, the structure and valve body have too much friction when pushed left and right due to the heat expansion of the gasket, or even get stuck, which seriously affects the pressure measurement results and makes the pressure measurement results differ too much from the actual results.

[0007] The technical solution adopted by the utility model is: an air-floating scanning valve with pressure vibration, including a connector, a side wall, a bottom plate, a slide rail, a No. 1 air cylinder, a main board, a signal conditioning circuit, a valve body, a structure, a No. 2 air cylinder, a side wall, a pressure sensor, a measured gas transfer tube, a No. 1 push valve high-pressure air pipe port, a top cover, an internal sliding interface layer position, a measuring air path interface guide needle, a first internal air path channel, a second internal air path channel, a third internal air path channel, a fourth internal air path channel and a No. 2 push valve high-pressure air pipe port;

[0008] A No. 1 air cylinder is set at one end of the valve body, a No. 2 air cylinder is set at the other end of the valve body, a structure is set on the top of the valve body, one end of the interior of the structure is plugged into the high-pressure air pipe port of the No. 1 push valve on the left, and the other end of the interior of the structure is plugged into the high-pressure air pipe port of the No. 2 push valve. Four air flotation holes are designed at four symmetrical points on the upper part of the structure. The outer shell includes a bottom plate, a top cover, a front side wall, a rear side wall, a left side wall and a right side wall; a connector is provided at the bottom of the outer shell, and pressure detection is performed through an array module composed of internal pressure sensors. A slide rail is provided at the bottom of the inner shell, and the array module composed of multiple pressure sensors is in close contact with the slide rail and can slide on the slide rail. The leads of the pressure sensors are connected to the signal conditioning circuit, and the signal is transmitted after conditioning. The signal is calculated and processed on the main board, and the signal is sent out through the connector. The pressure sensor module is also connected to a measured gas transfer tube. Cylinder No. 1 and cylinder No. 2 are respectively provided at the front and rear ends of the shell, and high-pressure air pipe ports No. 1 and No. 2 push valves are respectively provided at the front and rear ends on the top cover. The high-pressure air pipe ports No. 1 and No. 2 push valves are respectively connected to cylinder No. 1 and cylinder No. 2; a plurality of measuring air path interface guide needles are also provided on the top cover, and an air-floating air inlet is also provided on the top cover; an internal sliding interface layer position is provided under the top cover; a first internal air path channel, a second internal air path channel, a third internal air path channel, and a fourth internal air path channel are provided above and below the sliding interface layer position.

[0009] Preferably, the signal conditioning circuit is responsible for amplifying, filtering and converting the weak signal detected by the pressure sensor so that it can be accurately read and processed by subsequent systems or instruments.

[0010] Preferably, the No. 1 push valve high-pressure gas pipe port is an interface component for connecting the pressure sensor and the high-pressure gas pipeline, which allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

[0011] Preferably, the high-pressure gas pipe port of the No. 2 push valve is an interface component for connecting the pressure sensor and the high-pressure gas pipeline, which allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

[0012] Preferably, the guide needle of the measuring gas path interface is used to guide and fix the measuring gas path, ensuring the accuracy and stability of the gas path connection, thereby ensuring the reliability of pressure measurement.

[0013] Preferably, the internal sliding interface layer is located at the interface between the sensitive element inside the sensor and its contact body. This interface layer will be displaced or deformed under the action of pressure, thereby triggering the response of the sensor.

[0014] The beneficial effects of the air-floating scanning valve with pressure vibration of the utility model are as follows:

[0015] After being placed at room temperature for a long time, the rubber ring will deform and stick, and under high temperature conditions, the friction between the top cover and the valve body will be too large due to the heat expansion of the gasket, which may even cause the valve body to get stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the present utility model.

[0017] Figure 2 It is the basic appearance diagram of the utility model.

[0018] Figure 3 It is the main view and top view of the utility model.

[0019] Figure 4 It is a cross-sectional view of the present invention.

[0020] Figure 5 It is a side view of the present utility model.

[0021] Figure 6 This is the overall structure diagram of the utility model.

[0022] Figure markings: 1-connector, 2-side wall, 3-bottom plate, 4-slide rail, 5-No. 1 cylinder, 6-main board, 7-signal conditioning circuit, 8-No. 2 cylinder, 9-side wall, 10-pressure sensor, 11-measured gas transfer tube, 12-No. 1 push valve high-pressure air pipe port, 13-top cover, 14-internal sliding interface layer position, 15-measuring air path interface guide needle, 16-first internal air path channel, 17-second internal air path channel, 18-third internal air path channel, 19-fourth internal air path channel, 20-No. 2 push valve high-pressure air pipe port. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations conceived using the present invention are protected.

[0025] like Figures 1 to 6As shown, an air-floating scanning valve with pressure vibration comprises a connector 1, a side wall 2, a bottom plate 3, a slide rail 4, a No. 1 air cylinder 5, a main plate 6, a signal conditioning circuit 7, a valve body, a structure, a No. 2 air cylinder 8, a side wall (9), a pressure sensor 10, a measured gas transfer tube 11, a No. 1 push valve high-pressure air pipe port 12, a top cover 13, an internal sliding interface layer position 14, a measuring air path interface guide needle 15, a first internal air path channel 16, a second internal air path channel 17, a third internal air path channel 18, a fourth internal air path channel 19 and a No. 2 push valve high-pressure air pipe port 20;

[0026] A No. 1 air cylinder 5 is provided at one end of the valve body, a No. 2 air cylinder 8 is provided at the other end of the valve body, a structure is provided on the top of the valve body, one end of the interior of the structure is plugged into the No. 1 push valve high-pressure air pipe port 12 on the left, and the other end of the interior of the structure is plugged into the No. 2 push valve high-pressure air pipe port 20, and four air flotation holes are designed at four symmetrical points on the upper part of the structure. The shell includes a bottom plate 3, a top cover 13, a front side wall 2, a rear side wall 9, a left side wall and a right side wall; a connector 1 is provided at the bottom of the shell, and pressure detection is performed through an array module composed of internal pressure sensors 10, and a slide rail 4 is provided at the bottom of the shell. The array module composed of multiple pressure sensors 10 is in close contact with the slide rail 4 and can slide on the slide rail, and the lead of the pressure sensor 10 is connected to the signal conditioning circuit 7, and the conditioned signal is transmitted to the main board 6 for After calculation and processing, the signal is sent out through the connector 1. The pressure sensor module 10 is also connected to a measured gas transfer tube 11. The front and rear ends of the shell are respectively provided with a No. 1 cylinder 5 and a No. 2 cylinder 8. The front and rear ends of the top cover 13 are respectively provided with a No. 1 push valve high-pressure air pipe port 12 and a No. 2 push valve high-pressure air pipe port 20. The No. 1 push valve high-pressure air pipe port 12 and the No. 2 push valve high-pressure air pipe port 20 are respectively connected to the No. 1 cylinder 5 and the No. 2 cylinder 8; the top cover 13 is also provided with a plurality of measuring air path interface guide needles 15, and the top cover 13 has an air-floating air inlet; an internal sliding interface layer position 14 is provided below the top cover 13; the sliding interface layer position 14 is provided with a first internal air path channel 16, a second internal air path channel 17, a third internal air path channel 18, and a fourth internal air path channel 19 above and below.

[0027] The signal conditioning circuit of this embodiment is responsible for amplifying, filtering and converting the weak signal detected by the pressure sensor so that it can be accurately read and processed by subsequent systems or instruments.

[0028] The No. 1 push valve high-pressure gas pipe port 12 of this embodiment is used as an interface component for connecting the pressure sensor and the high-pressure gas pipeline, which allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

[0029] The No. 2 push valve high-pressure gas pipe port 20 of this embodiment is an interface component for connecting the pressure sensor and the high-pressure gas pipeline, which allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

[0030] The measuring gas path interface guide needle 15 of this embodiment is used to guide and fix the measuring gas path, ensuring the accuracy and stability of the gas path connection, thereby ensuring the reliability of pressure measurement.

[0031] The internal sliding interface layer position 14 of this embodiment is the interface between the sensitive element inside the sensor and its contact body. This interface layer will be displaced or deformed under the action of pressure, thereby triggering the response of the sensor.

[0032] When high-pressure gas is introduced into the air-floating inlet, it pushes the entire internal measuring module downward (closer to the slide rail and away from the top cover), reducing the pressure between the valve body and the top cover. This reduced pre-pressure also reduces the sliding friction between the valve body and the top cover, making it easier to push the valve. Once fully pushed, the high-pressure gas from the air-floating inlet is removed, and the pre-pressure between the valve body and the top cover returns to normal. This allows the rubber sealing ring on the valve body to maintain close contact with the top cover, ensuring the device's airtightness.

[0033] When the device pushes the valve cylinder to the left, it is in the measuring state; when the device pushes the valve cylinder to the right, it is in the calibration state. The device has 64 air intake measurement interfaces, which are connected to the gas on the surface of the object to be measured (in order to measure the air pressure). These 64 air intake holes will be connected to the air pressure interfaces at different locations of the outside world. The gas is connected through the top cover, passes through the air path inside the top cover, and finally reaches the sensor interface of the valve body. After entering the surface, it reaches the inside of the valve body. Pressure sensors (8*8) are distributed inside the valve body. The pressure sensor slides in the valve body and transforms from the calibration state (the calibration state means that all sensor paths are connected together, so the outside world only needs to introduce one air pressure inlet to calibrate all 64 air paths, so it is called the calibration state.) to the measurement state, independently measuring the air pressure of different air intake interfaces, converting them into electrical signals, and then being processed by the circuit board and finally becoming digital signals and sending out I.

[0034] The valve body moves in the other direction under the push of cylinder 1 5 and cylinder 2 8 (note: cylinder 1 is pressurized and pushes the valve body to the right. Cylinder 2 is not pressurized at this time. When pushing the valve body from right to left, the opposite is true). This completes the conversion of the measurement gas path state.

[0035] The driving force mentioned in the first paragraph can be high-pressure gas, a geared motor, or a solenoid actuator to propel the structure. Furthermore, the power source for pushing the valve body is not limited to the core, but also involves the external force that changes the preload between the top cover and the valve body, enabling easy valve movement. This external force can be high-pressure gas, or a linear geared motor / solenoid can be used as the power source for generating displacement.

[0036] This method places the entire air path switching channel within the upper structure, so the gasket is installed only on the upper surface of the valve body. The lower structure of the valve body consists of a metal spring rail (the spring presses against the ball bearing. This preloads the structure and valve body by tightening the external screws, maintaining the air path seal. The circles in the figure represent the ball bearing and spring). The pushers are placed on the left and right sides (in the x-direction). The thrust generated by the pushers and the friction generated by the valve body movement are both in the x-direction.

[0037] The key is the design of four air flotation holes at four symmetrical points on the upper portion of the structure. The size of the air flotation holes and the air pressure can be adjusted based on the pressure and friction between the structure and the valve body. When the valve is pushed, high-pressure air is introduced. This reduces the preload between the valve body and the structure, allowing the left and right cylinders to operate. The air flotation and the push valve are then linked together to reduce friction and prevent mechanical jamming.

[0038] When the valve is pushed, the air flow ejected from the air flotation hole reduces the pressure between the structure and the valve body structure while ensuring a certain air tightness. The pushing device can easily push the valve body to reciprocate.

[0039] Connector 1: An important component used to connect the sensor and the measurement system.

[0040] Side wall 2: It is the outer shell of the sensor, which can be in direct contact with the medium to be measured, thereby sensing pressure changes.

[0041] Base plate 3: It has good chemical resistance and high linearity, and can ensure the performance stability of the sensor throughout the entire measurement range. The base plate supports and fixes the sensing element in the pressure sensor.

[0042] Slide rail 4: A component used in a mechanical structure to guide and fix the sensor so that it can move in a specific direction or maintain a fixed position; it is part of the sensor installation and positioning, ensuring that the sensor accurately measures pressure while facilitating installation and maintenance.

[0043] Cylinder No. 1 5: Mainly used to provide binary feedback signal (uncertain) of the piston position of the pneumatic actuator.

[0044] Main board 6 (sampling, calculation and transmission): is the electronic component of the pressure sensor, which is responsible for sampling, calculating and transmitting the pressure signal; this part of the circuit converts the physical deformation of the sensor into a measurable electrical signal, which is then processed and transmitted accordingly.

[0045] Signal conditioning circuit 7: Mainly responsible for amplifying, filtering and converting the weak signal detected by the pressure sensor so that it can be accurately read and processed by subsequent systems or instruments.

[0046] Cylinder No. 2 8: Mainly used to provide binary feedback signal (uncertain) of the piston position of the pneumatic actuator.

[0047] Side wall 9: It is the outer shell of the sensor and can be in direct contact with the medium to be measured, thereby sensing pressure changes.

[0048] Pressure sensor 10: monitors system pressure in pneumatic and compressed air systems (uncertain).

[0049] Measured gas transfer tube 11: a component connecting the pressure sensor and the measured gas, whose function is to transfer the pressure of the measured gas to the pressure sensitive element of the sensor.

[0050] Push-valve No. 1 high-pressure gas pipe port 12: This interface component connects the pressure sensor to the high-pressure gas pipeline. It allows the pressure measurement end of the sensor to be connected to the high-pressure gas system being measured. It has sufficient pressure resistance to adapt to the pressure range of high-pressure gas while ensuring a tight and stable connection.

[0051] Top cover 13 (containing an air passage): can withstand a certain pressure and protect internal sensitive components, ensure the correct connection between the sensor and the measured medium, and provide air tightness to ensure measurement accuracy.

[0052] Internal sliding interface layer position 14: The interface between the sensitive element inside the sensor and its contact body. This interface layer will displace or deform under the action of pressure, thereby triggering the response of the sensor.

[0053] Measuring gas path interface guide needle 15: It is a component in the pressure sensor used to ensure that the measuring gas path is correctly connected to the sensor gas path interface; its main function is to guide and fix the measuring gas path, ensure the accuracy and stability of the gas path connection, and thus ensure the reliability of pressure measurement.

[0054] The first internal gas channel 16, the second internal gas channel 17, the third internal gas channel 18, and the fourth internal gas channel 19 are channels within the sensor used to transport the measured gas or liquid to the pressure sensing element. The design of these channels is crucial to ensuring the accuracy and response speed of the pressure sensor. They allow the measured medium to directly act on the sensor's sensitive element, converting the pressure into an electrical signal output.

[0055] Push-valve No. 2 high-pressure gas pipe port 20: This is the interface component used to connect the pressure sensor to the high-pressure gas pipeline. It allows the pressure measurement end of the sensor to be connected to the high-pressure gas system being measured. It has sufficient pressure resistance to adapt to the pressure range of high-pressure gas, while ensuring a tight and stable connection.

Claims

1. An air-floating scanning valve with pressure vibration, characterized in that: It includes a connector (1), a front side wall (2), a bottom plate (3), a slide rail (4), a No. 1 air cylinder (5), a main board (6), a signal conditioning circuit (7), a valve body, a structure, a No. 2 air cylinder (8), a rear side wall (9), a pressure sensor (10), a measured gas transfer tube (11), a No. 1 push valve high-pressure air pipe port (12), a top cover (13), an internal sliding interface layer position (14), a measuring air path interface guide needle (15), a first internal air path channel (16), a second internal air path channel (17), a third internal air path channel (18), a fourth internal air path channel (19), a No. 2 push valve high-pressure air pipe port (20) and a shell; A No. 1 air cylinder (5) is provided at one end of the valve body, a No. 2 air cylinder (8) is provided at the other end of the valve body, a structure is provided on the top of the valve body, one end of the interior of the structure is plugged into the No. 1 push valve high-pressure air pipe port (12) on the left, and the other end of the interior of the structure is plugged into the No. 2 push valve high-pressure air pipe port (20), and four air flotation holes are designed at four symmetrical points on the upper part of the structure. The shell includes a bottom plate (3), a top cover (13), a front side wall (2), a rear side wall (9), a left side wall and a right side wall; a connector (1) is provided at the bottom of the shell, and pressure detection is performed by forming an array module through an internal pressure sensor (10); a slide rail (4) is provided at the bottom of the shell, and the array module composed of multiple pressure sensors (10) is in close contact with the slide rail (4) and can slide on the slide rail; the lead of the pressure sensor (10) is connected to the signal conditioning circuit (7), and the conditioned signal is transmitted to the main board (6) for The pressure sensor (10) is connected to a gas transfer tube (11) to be measured. The front and rear ends of the housing are provided with a No. 1 air cylinder (5) and a No. 2 air cylinder (8). The front and rear ends of the top cover (13) are provided with a No. 1 push valve high-pressure air pipe port (12) and a No. 2 push valve high-pressure air pipe port (20). The No. 1 push valve high-pressure air pipe port (12) and the No. 2 push valve high-pressure air pipe port (20) are connected to the No. 1 air cylinder (5) and the No. 2 air cylinder (8) respectively. The top cover (13) is also provided with a plurality of measuring air path interface guide needles (15). The top cover (13) is also provided with an air-floating air inlet. An internal sliding interface layer position (14) is provided below the top cover (13). The sliding interface layer position (14) is provided with a first internal air path channel (16), a second internal air path channel (17), a third internal air path channel (18), and a fourth internal air path channel (19) above and below.

2. The air-floating scanning valve with pressure vibration according to claim 1, characterized in that: The signal conditioning circuit is responsible for amplifying, filtering and converting the weak signal detected by the pressure sensor so that it can be accurately read and processed by subsequent systems or instruments.

3. The air-floating scanning valve with pressure vibration according to claim 1, characterized in that: The No. 1 push valve high-pressure gas pipe port (12) is an interface component for connecting a pressure sensor and a high-pressure gas pipeline, and allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

4. The air-floating scanning valve with pressure vibration according to claim 1, characterized in that: The second push valve high-pressure gas pipe port (20) is used as an interface component for connecting a pressure sensor and a high-pressure gas pipeline, and allows the pressure measuring end of the sensor to be connected to the high-pressure gas system to be measured.

5. The air-floating scanning valve with pressure vibration according to claim 1, characterized in that: described The measuring gas path interface guide needle (15) is used to guide and fix the measuring gas path, ensuring the accuracy and stability of the gas path connection, thereby ensuring the reliability of pressure measurement.

6. The air-floating scanning valve with pressure vibration according to claim 1, characterized in that: The internal sliding interface layer position (14) is the interface between the sensitive element inside the sensor and its contact body. This interface layer will be displaced or deformed under the action of pressure, thereby triggering the response of the sensor.

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