Pneumatic type multifunctional pressure scanning valve

Abstract

The invention provides a pneumatic type multifunctional pressure scanning valve and relates to the technical field of valves, the pneumatic type multifunctional pressure scanning valve comprises a pressure scanning valve shell, a valve body, a valve element structure and a control structure, the valve body comprises a first valve body and a second valve body, ventilation cavities are formed in the first valve body and the second valve body, and the valve element structure comprises a supporting core rod; the supporting core rod is sleeved with a plurality of sliding sleeves, movable valve pieces are integrally formed outside the sliding sleeves, and fixed valve pieces are connected outside the movable valve pieces in a sleeved mode. According to the technical key points, a sliding sleeve is driven to rotate through a control structure on the outer side of a pressure scanning valve shell, so that a movable valve piece is driven to rotate in a fixed valve piece, and the states of ventilation cavity areas at the two ends of the fixed valve piece are communicated through the fixed valve piece; by means of the marking structures on the multiple control structures facing the same direction in the initial state, the direction of the marking structures can be conveniently observed from one side of the side plate so as to judge the rotating condition of the movable valve piece on the inner side of the fixed valve piece.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, in particular to a pneumatic multifunctional pressure scanning valve. Background Art

[0002] With the continuous improvement of industrial automation, modern industrial production has increasingly stringent requirements for equipment accuracy and efficiency. Especially in situations requiring precise pressure control and monitoring, pressure scanning valves, with their multi-channel and high-precision features, have become key equipment in industrial testing and process monitoring.

[0003] The pressure scanning valve is a process testing instrument used in the fields of mechanical engineering, civil engineering, and transportation engineering. It uses a multi-channel sensor array to achieve 256-channel synchronous pressure measurement with a measurement accuracy of 0.06% FS. Its core technologies include differential programmable amplifier circuit design, electromagnetic interference shielding structure, and multi-stage voltage-regulated power supply system. It can achieve pressure data acquisition in the range of ±0.2kPa to 30MPa in scenarios such as wind tunnel testing and building model pressure measurement. The instrument reduces the measurement error to 0.055% through the GEV distribution calibration algorithm and is equipped with a metal bellows sealing device to ensure measurement stability in high temperature and high pressure environments. In dynamic testing, it supports the timestamp synchronization mechanism of the 125Hz data acquisition system and the 20Hz measurement point system to meet the pressure parameter capture requirements when the model attitude angle continuously changes.

[0004] Pressure scanning valves function based on the characteristics of pressure sensors and advanced electronic scanning technology. The core component is the pressure sensor, which converts pressure signals into electrical signals, then amplifies and filters them through internal electronic circuitry, ultimately outputting a stable pressure value. In a multi-channel pressure scanning valve, each channel is equipped with a pressure sensor. These sensors operate simultaneously, transmitting pressure signals from different locations to the scanning valve's acquisition system. Through synchronized acquisition technology, rapid and accurate measurement of multiple pressure points is achieved.

[0005] Patent document with announcement number CN113513615B discloses a pneumatic multifunctional pressure scanning valve. The shuttle slides linearly in the valve body through a power assembly. An intermediate pipeline a and an intermediate pipeline b are provided in the valve shuttle. The valve body is provided with a calibration gas source pipeline, a measured gas source pipeline and a pressure sensor pressure measuring end pipeline. The shuttle reaches valve position one under the action of the power assembly, and the calibration gas source pipeline and the pressure sensor pressure measuring end pipeline are connected through the intermediate pipeline a. The shuttle reaches valve position two under the action of the power assembly, and the measured gas source pipeline and the pressure sensor pressure measuring end pipeline are connected through the intermediate pipeline b, without the need for a cumbersome switching control system and Various valves can switch working modes simply and quickly with simple mechanical devices, which is more conducive to the miniaturized design of the pressure scanning valve, lower manufacturing and maintenance costs, and longer service life. The pressure scanning valve does not need to be removed from the test bench to achieve calibration of the pressure scanning valve, meeting the requirement of setting the zero point of the test bench according to the on-site atmospheric pressure. Foreign matter and moisture in the pressure measuring tube can be blown out before or after the pressure test, avoiding equipment damage caused by removal of the pressure scanning valve from the test bench, laboratory calibration, and reinstallation, shortening the test preparation cycle, and ensuring the accuracy and stability of the test data.

[0006] However, in the process of implementing the above technical solution, it was found that the above technical solution had the following technical problems: The pneumatic multifunctional pressure scanning valve uses a power component to make the valve shuttle slide linearly in the valve body, so that the intermediate pipeline a in the valve shuttle connects the calibration gas source pipeline and the pressure measuring end pipeline of the pressure sensor, and the intermediate pipeline b of the valve shuttle connects the measured gas source pipeline and the pressure measuring end pipeline of the pressure sensor. The working mode switching of the valve body can be quickly completed by simple mechanical movement. However, in actual application, because the valve shuttle is arranged inside the valve body, when the valve shuttle is controlled by a simple mechanical device, the activity state and control part of the valve shuttle are located inside the valve body. It is difficult for the operator to observe the adjustment state of the valve shuttle in real time. During ventilation, it is difficult to determine whether the valve shuttle is passively active, thereby confirming the accuracy of the pressure measurement after ventilation. Summary of the Invention

[0007] To overcome the problem of existing pneumatic multifunctional pressure scanning valves in actual applications, in which the valve shuttle is disposed inside the valve body and, when the valve shuttle is controlled by a simple mechanical device, the active state and control portion of the valve shuttle are located inside the valve body. This makes it difficult for an operator to observe the adjustment state of the valve shuttle in real time. Furthermore, during ventilation, it is difficult to determine whether the valve shuttle is passively moving, thereby confirming the accuracy of pressure measurement after ventilation. The present invention provides a pneumatic multifunctional pressure scanning valve. An operating lever is controlled on the outside of the pressure scanning valve housing to rotate a driving gear, causing an axial gear meshing with the driving gear to rotate a sliding sleeve, thereby driving the movable valve member to rotate inside the fixed valve member. The fixed valve member communicates the status of the ventilation cavity areas at both ends of the fixed valve member through the fixed valve member. This valve is simple and convenient. Furthermore, by aligning the marking strips on multiple operating levers in the same direction, the orientation of the multiple marking strips on one side of the side plate during use can be observed to determine the rotation of the movable valve member inside the fixed valve member. Because multiple sliding sleeves are arranged together on the outside of the same supporting core rod, when the supporting core rod moves inside the ventilation cavity with reference to the existing control technology, the valve core structure can be guaranteed to retain the basic functions of the traditional pressure scanning valve, and combined with the control structure that independently controls the gas flow direction in the ventilation cavity, it is convenient to integrate simple manual control, automatic mechanical control and manual control status identification, reflecting the diversity of functions.

[0008] The technical solution adopted by the embodiment of the present application to solve the technical problem is: A pneumatic multifunctional pressure scanning valve comprises a pressure scanning valve housing, a valve body, a valve core structure and a control structure, wherein the valve body is arranged inside the pressure scanning valve housing; The valve core structure is movably connected to the inside of the valve body; The control structure is rotatably connected to the interior of the valve body; The bottom of the pressure scanning valve housing is fixedly connected to the pressure scanning valve bottom plate, the top of the pressure scanning valve housing is assembled to be connected to a cover plate, the top of the valve body is assembled to be connected to a plurality of connecting pipe heads extending from the inside of the cover plate, the plurality of connecting pipe heads are arranged in two rows, the cover plate is internally embedded with a visual window on a side away from the plurality of connecting pipe heads, one side of the long side of the pressure scanning valve housing is assembled to be connected to a side plate, the side plate is located on the side of the plurality of connecting pipe heads away from the visual window; The valve body includes a first valve body and a second valve body, and a ventilation cavity is provided inside the first valve body and the second valve body. The ventilation cavities on the first valve body and the second valve body are staggered up and down. There are two valve core structures, which are respectively located inside the two ventilation cavities. There are multiple control structures, which are divided into two groups. One group is movably connected to the inside of the first valve body, and the other group passes through the inside of the first valve body and is movably connected to the inside of the second valve body.

[0009] In one possible implementation, the valve core structure includes a supporting core rod, the outside of which is sleeved with a plurality of sliding sleeves, the outsides of the plurality of sliding sleeves are integrally formed with movable valve parts, and the outsides of the movable valve parts are sleeved with fixed valve parts; the plurality of sliding sleeves are independently arranged and all rotate on the outside of the supporting core rod.

[0010] In one possible implementation, a vent is provided inside the movable valve component, a second slot is provided inside the fixed valve component, and first slots are provided at both ends of the fixed valve component; the movable valve component is adapted to be connected to the inner wall of the second slot, and the movable valve component connects the two first slots through the vent, and seals the vent with the help of the inner walls at both ends of the second slot.

[0011] In one possible implementation, a plurality of limiting arc plates are integrally formed at the side walls of the two ventilation cavities, and the plurality of limiting arc plates respectively correspond to a plurality of fixed valve components, and the fixed valve components are respectively connected to the limiting arc plates through the first slot and the second slot, and are slidably connected to the outside of the limiting arc plates.

[0012] In one possible implementation, the plurality of control structures include a control member, a driving gear is provided at one end of the control member, and an axial gear is pin-connected to the outside of one end of the sleeve; the driving gear is meshedly connected to one side of the axial gear, and the axial gear is controlled to drive the sleeve to rotate outside the supporting core rod, so that the air vent on the movable valve member switches between a blocked state by the fixed valve member and an open state.

[0013] In one possible implementation, the control member includes two forms, one is composed of a single operating rod, one end of the operating rod is integrally formed with a first prismatic rod, and the first prismatic rod is pinned to the interior of the driving gear; the other is composed of an operating rod and a transfer rod, the first prismatic rod is arranged at one end of the transfer rod, and one end of the operating rod can also be integrally formed with a second prismatic rod, and the second prismatic rod is pinned to the interior of the transfer rod away from the driving gear; the control member composed of the single operating rod is applied to the valve core structure on the first valve body, and the control member composed of the operating rod and the transfer rod passes through the interior of the first valve body and is applied to the valve core structure on the second valve body.

[0014] In a possible implementation, a plurality of air inlet pipes and a plurality of air outlet pipes are provided inside the first valve body and the second valve body, and the plurality of air inlet pipes and the plurality of air outlet pipes are coaxially arranged and are connected through the same ventilation cavity.

[0015] In a possible implementation, a first rubber ring is sleeve-connected to the outside of the operating rod applied to the valve core structure on the first valve body, and a side of the first rubber ring away from the driving gear is adaptably connected to the inner wall of the ventilation cavity.

[0016] In one possible implementation, a second rubber ring is sleeved on the outside of the transfer rod applied to the valve core structure on the second valve body, and one side of the second rubber ring is adapted to be connected to the inner wall of the air outlet pipe on the first valve body. The first rubber ring is also sleeved on the outside of the transfer rod, and the side of the first rubber ring away from the driving gear is adapted to be connected to the inner wall of the ventilation cavity.

[0017] In a possible implementation, a marking strip is processed on one end surface of the operating rod away from the first valve body or the second valve body, and the marking strips on the multiple operating rods face the same direction.

[0018] The beneficial effects of this application are: First, in this solution, a valve core structure consisting of a supporting core rod, a sliding sleeve, a fixed valve member, and a movable valve member is provided inside the ventilation cavity. When the first valve body and the second valve body in the ventilation cavity are in a displaced state and two valve core structures are mounted, a control structure corresponding to the multiple sliding sleeves can be used to control the sliding sleeves to drive the movable valve member to rotate inside the fixed valve member, supporting the movable valve member to connect the two first notches through the air vent, thereby connecting the spaces at both ends of the fixed valve member, thereby facilitating autonomous adjustment of the area supporting gas flow in the ventilation cavity. Secondly, in this solution, by controlling the sliding sleeve to drive the movable valve member to rotate inside the fixed valve member, the ends of the air vent face the inner walls at both ends of the second notch. When the ends of the air vent on the movable valve member are blocked by the inner walls at both ends of the second notch, the function of the traditional valve core structure can be realized, thereby using the traditional method to control the internal structure of the pressure scanning valve; Third, in this solution, the driving gear is driven to rotate by controlling the operating lever on the outside of the pressure scanning valve housing, so that the axial gear meshing with the driving gear drives the sliding sleeve to rotate, thereby driving the movable valve member to rotate inside the fixed valve member. The fixed valve member is used to communicate the status of the ventilation cavity area at both ends of the fixed valve member, which is simple and convenient. At the same time, by making the marking strips on the multiple operating rods face the same direction, during use, it is convenient to observe the directions of the multiple marking strips on one side of the side plate to determine whether the movable valve member is rotating inside the fixed valve member; Fourth, in this solution, by arranging multiple sliding sleeves together on the outside of the same supporting core rod, when the supporting core rod moves inside the ventilation cavity with reference to the existing control technology, it can ensure that the valve core structure retains the basic functions of the traditional pressure scanning valve, and is combined with a control structure that independently controls the direction of gas flow in the ventilation cavity, which facilitates the integration of simple manual control, automatic mechanical control and manual control status identification, reflecting the diversity of functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall structure of a pneumatic multifunctional pressure scanning valve of the present invention; Figure 2 This is a structural schematic diagram of a pneumatic multifunctional pressure scanning valve body of the present invention; Figure 3 This invention is a pneumatic multifunctional pressure scanning valve Figure 2 A magnified schematic diagram of part B in the middle; Figure 4 This is a schematic diagram of the connection structure of a pneumatic multifunctional pressure scanning valve spool structure and a control structure of the present invention; Figure 5 This invention is a pneumatic multifunctional pressure scanning valve Figure 1 A magnified schematic diagram of part A in the middle; Figure 6 This is a schematic diagram of the connection structure of a pneumatic multifunctional pressure scanning valve control structure of the present invention; Figure 7 This is a cross-sectional view of a valve body of a pneumatic multifunctional pressure scanning valve according to the present invention; Figure 8 This is a structural schematic diagram of a pneumatic multifunctional pressure scanning valve according to the present invention in a state where the sliding sleeve and the axial gear are disconnected.

[0020] Figure numerals: 1. Pressure scanning valve bottom plate; 2. Pressure scanning valve housing; 3. Cover plate; 4. Visual window; 5. Pipe joint; 6. Side plate; 7. Valve core structure; 701. Support core rod; 702. Axial gear; 703. Sleeve; 704. Fixed valve member; 705. Movable valve member; 8. Control structure; 801. Drive gear; 802. Operating lever; 803. First prism rod; 804. Marking strip; 805. Second prism rod; 806. Adapter rod; 9. First valve body; 10. Second valve body; 11. Air inlet pipe; 12. Air outlet pipe; 13. Limiting arc plate; 14. First notch; 15. Second notch; 16. First rubber ring; 17. Air vent; 18. Second rubber ring; 19. Ventilation cavity. DETAILED DESCRIPTION

[0021] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows: Example 1: This example introduces the specific structure of a pneumatic multifunctional pressure scanning valve. Figure 1-Figure 4 、 Figure 8As shown, it includes a pressure scanning valve housing 2, a valve body arranged inside the pressure scanning valve housing 2, a valve core structure 7 movably connected to the inside of the valve body, and a control structure 8 rotatably connected to the inside of the valve body. The bottom of the pressure scanning valve housing 2 is fixedly connected to the pressure scanning valve bottom plate 1, the top of the pressure scanning valve housing 2 is assembled with a cover plate 3, and the top of the valve body is assembled with a plurality of pipe joints 5 passing through the inside of the cover plate 3. The plurality of pipe joints 5 are arranged in two rows. A visual window 4 is embedded in the cover plate 3 on one side away from the plurality of pipe joints 5. A side plate 6 is assembled on one side of the long side of the pressure scanning valve housing 2. By locating the side plate 6 on the side of the plurality of pipe joints 5 away from the visual window 4, the plurality of control structures 8 can be placed close to the side of the plurality of pipe joints 5, making it easier to control the movement of corresponding components on the valve core structure 7 using the plurality of control structures 8 without being affected by interference from the circuit part inside the pressure scanning valve housing 2. like Figure 2 As shown, the valve body includes a first valve body 9 and a second valve body 10. A ventilation cavity 19 is provided inside the first valve body 9 and the second valve body 10. A plurality of air inlet pipes 11 and a plurality of air outlet pipes 12 are opened inside the first valve body 9 and the second valve body 10. The plurality of air inlet pipes 11 and the plurality of air outlet pipes 12 are respectively coaxially arranged and are all connected through the same ventilation cavity 19. There are two valve core structures 7, each located inside the two ventilation cavities 19. There are multiple control structures 8, which are divided into two groups. By staggering the ventilation cavities 19 on the first valve body 9 and the second valve body 10 up and down, the multiple control structures 8 can be arranged in a vertical manner to extend into the ventilation cavities 19 on the first valve body 9 and the second valve body 10 respectively (one group is movably connected to the interior of the first valve body 9, and the other group passes through the interior of the first valve body 9 and is movably connected to the interior of the second valve body 10). This facilitates the use of multiple control structures 8 to control the operation of corresponding components on the two valve core structures 7 from a single direction. like Figures 2 to 4 As shown, the valve core structure 7 includes a supporting core rod 701, the outer portion of the supporting core rod 701 is sleeved with a plurality of sliding sleeves 703, the outer portions of the plurality of sliding sleeves 703 are integrally formed with movable valve members 705, and the outer portions of the movable valve members 705 are sleeved with a fixed valve member 704; In one possible implementation, a vent 17 is provided inside the movable valve member 705, a second notch 15 is provided inside the fixed valve member 704, and first notches 14 are provided at both ends of the fixed valve member 704. By independently setting up multiple sliding sleeves 703 and rotating them on the outside of the supporting core rod 701, the multiple sliding sleeves 703 can be independently moved to drive the movable valve members 705 at corresponding positions to move inside the fixed valve member 704, thereby confirming whether the ventilation cavity 19 at both ends of the single fixed valve member 704 is used for gas circulation. At the same time, by making the movable valve member 705 fit the inner wall of the second notch 15, ensuring that the surface of the movable valve member 705 is in contact with the inner wall of the second notch 15, the movable valve member 705 can be supported to connect the two first notches 14 through the air vent 17, thereby connecting the spaces at both ends of the fixed valve member 704. Furthermore, when the movable valve member 705 is rotated so that the ends of the air vent 17 face the inner walls at both ends of the second notch 15, the air vent 17 can be sealed by means of the inner walls at both ends of the second notch 15, thereby realizing the function of the conventional valve core structure 7 and controlling the internal structure of the pressure scanning valve in a conventional manner. Secondly, a plurality of limiting arc plates 13 are integrally formed on the side walls of the two ventilation cavities 19. The plurality of limiting arc plates 13 correspond to the plurality of fixed valve members 704, respectively. The fixed valve members 704 are connected to the limiting arc plates 13 via the first notch 14 and the second notch 15, respectively. By utilizing the limiting arc plates 13 and the first notch 14 and the second notch 15 to cooperate with each other, the fixed valve members 704 can be restricted from rotating inside the ventilation cavity 19. When only supporting the valve core structure 7 to maintain the traditional function, the fixed valve members 704 are slidably connected to the outside of the limiting arc plates 13, without affecting the movement of the valve core structure 7 along its axial direction, so as to adjust the passage inside the ventilation cavity 19. In some examples, in order to limit the sliding of multiple sleeves 703 outside the support core rod 701 along the axis direction of the support core rod 701, an annular groove can be processed on the outside of the support core rod 701 and a retaining ring can be inserted to limit the movement of the sleeves 703.

[0022] The above design disposes a valve core structure 7 composed of a supporting core rod 701, a sliding sleeve 703, a fixed valve member 704, and a movable valve member 705 inside the vent cavity 19. When the first valve body 9 and the second valve body 10 are in a misaligned state and two valve core structures 7 are mounted on the vent cavity 19, the control structure 8 corresponding to the multiple sliding sleeves 703 can be used to control the sliding sleeves 703 to drive the movable valve member 705 to rotate inside the fixed valve member 704, thereby supporting the movable valve member 705 to connect the two first notches 14 through the vent 17, thereby connecting the spaces at both ends of the fixed valve member 704. At the same time, when the control sleeve 703 drives the movable valve member 705 to rotate inside the fixed valve member 704, so that the two ends of the air vent 17 face the inner walls at both ends of the second slot 15, and the two ends of the air vent 17 on the movable valve member 705 are blocked by the inner walls at both ends of the second slot 15, the function of the traditional valve core structure 7 can be realized, so that the structure inside the pressure scanning valve can be controlled using the traditional method. Example 2: Based on Example 1, this example introduces the specific structure of the valve core structure 7 and the control structure 8, as shown in FIG. Figures 1 to 7 As shown, the multiple control structures 8 each include a control member, one end of which is provided with a driving gear 801 , and one end of a sliding sleeve 703 is externally pin-connected with an axial gear 702 ; By meshing the driving gear 801 with one side of the axial gear 702, when the control member is rotated, the axial gear 702 can be controlled to drive the sliding sleeve 703 to rotate outside the supporting core rod 701, so that the air vent 17 on the movable valve member 705 is switched between a blocked state by the fixed valve member 704 and an open state. This facilitates centralized control of multiple control members on the side plate 6 outside the pressure scanning valve housing 2, driving the corresponding driving gear 801 to control the rotation of the axial gear 702, so that the axial gear 702 drives the sliding sleeve 703 to rotate outside the supporting core rod 701, and finally controls the movable valve member 705 outside the sliding sleeve 703 to rotate inside the fixed valve member 704. like Figure 4 and Figure 6 As shown, the control member includes two forms. One is composed of a single operating rod 802, one end of which is integrally formed with a first prism rod 803, and the first prism rod 803 is pinned to the inside of the driving gear 801 (see Figure 4 The other type is composed of an operating rod 802 and a transfer rod 806, wherein a first prism rod 803 is provided at one end of the transfer rod 806, and a second prism rod 805 can be integrally formed at one end of the operating rod 802, and the second prism rod 805 is pinned to the inside of the transfer rod 806 away from the end of the driving gear 801 (see FIG. Figure 6 ); Specifically, by applying the control member consisting of a single operating rod 802 to the valve core structure 7 on the first valve body 9, and applying the control member consisting of the operating rod 802 and the adapter rod 806 to the valve core structure 7 on the second valve body 10 through the interior of the first valve body 9, the length of the control member on the control structure 8 can be adjusted according to the actual distance between the first and second valve bodies 9, 10 and the side plate 6, which helps to ensure that the final state of the multiple control structures 8 extending from the pressure scanning valve housing 2 to the interior of the side plate 6 remains the same. Secondly, the first rubber ring 16 (see FIG. 1 ) is connected to the outside of the operating rod 802 applied to the valve core structure 7 on the first valve body 9 by sleeve connection. Figure 4), so that the side of the first rubber ring 16 away from the driving gear 801 is adapted to be connected to the inner wall of the ventilation cavity 19. This can prevent gas leakage and inaccurate monitoring when the gas flows through the inlet pipe 11 on the first valve body 9 and the ventilation cavity 19 to the inside of the outlet pipe 12, and the pressure state is monitored by the pressure sensor at one end of the outlet pipe 12; At the same time, a second rubber ring 18 (see FIG. 1 ) is sleeved on the outside of the transfer rod 806 applied to the valve core structure 7 on the second valve body 10. Figure 6 ), one side of the second rubber ring 18 is adapted to be connected to the inner wall of the outlet pipe 12 on the first valve body 9, and the first rubber ring 16 is also sleeved on the outside of the adapter rod 806 (see Figure 6 ), the side of the first rubber ring 16 away from the driving gear 801 is adapted to be connected to the inner wall of the vent cavity 19, which can prevent gas leakage and inaccurate monitoring when the gas flows through the inlet pipe 11 on the second valve body 10 and the vent cavity 19 to the inside of the outlet pipe 12, and the pressure state is monitored by the pressure sensor at one end of the outlet pipe 12; Furthermore, by processing a marking strip 804 on the surface of the end of the operating rod 802 away from the first valve body 9 or the second valve body 10, the marking strips 804 on multiple operating rods 802 are oriented in the same direction, which makes it convenient to judge the engagement state of the driving gear 801 and the axial gear 702 by means of the orientation of the marking strips 804 on multiple operating rods 802, control the rotation of the axial gear 702, and make the axial gear 702 drive the sleeve 703 to rotate.

[0023] The above design utilizes the operating rod 802 and the drive gear 801, as well as the adapter rod 806, the operating rod 802, and the drive gear 801 to form the main structure of the control structure 8. After the control structures 8 of different lengths are inserted into the ventilation cavity 19 on the first valve body 9 and the ventilation cavity 19 on the second valve body 10, the operating rod 802 can be controlled to drive the drive gear 801 to rotate, so that the axial gear 702 meshing with the drive gear 801 drives the sliding sleeve 703 to rotate, thereby driving the movable valve member 705 to rotate inside the fixed valve member 704, thereby facilitating the control of the movable valve member 705 communicating with the ventilation cavity 19 at both ends of the fixed valve member 704 through the fixed valve member 704. At the same time, when the multiple control structures 8 are extended into the interior of the ventilation cavity 19, the marking bars 804 on the multiple operating rods 802 are oriented in the same direction. During use, it is convenient to observe the orientation of the multiple marking bars 804 on one side of the side plate 6 to determine the rotation of the movable valve member 705 inside the fixed valve member 704.

[0024] Specifically, when using the pneumatic multifunctional pressure scanning valve to work: First, insert the tool into one end of the operating rod 802 and rotate the operating rod 802 to move the driving gear 801 or the driving gear 801 connected to the adapter rod 806. This can drive the driving gear 801 to rotate inside the ventilation cavity 19. The axial gear 702 pinned to the outside of one end of the sliding sleeve 703 engages with the driving gear 801, causing the movable valve member 705 to rotate inside the fixed valve member 704, thereby controlling the communication between the vent 17 on the movable valve member 705 and the first notches 14 at both ends of the fixed valve member 704. Then, the pipeline is connected to multiple connecting pipes 5, so that the gas enters the air inlet pipe 11 and the ventilation cavity 19 through the connecting pipe 5. The movable valve member 705 and the fixed valve member 704 on the valve core structure 7 control whether to apply pressure to the pressure sensor through the inside of the air outlet pipe 12 to obtain detection data; Next, during the inspection, by using the operating rod 802 away from the position indicated by the marking strip 804 at one end of the driving gear 801, observe whether the driving gear 801 is affected by the sliding sleeve 703 passively rotating outside the supporting core rod 701, thereby driving the axial gear 702 to rotate and causing the driving gear 801 to rotate involuntarily; At the same time, since multiple sliding sleeves 703 are jointly arranged on the outside of the same supporting core rod 701, when the supporting core rod 701 moves inside the ventilation cavity 19 with reference to the existing control technology, it can ensure that the valve core structure 7 retains the basic functions of the traditional pressure scanning valve, and is combined with the control structure 8 that independently controls the direction of gas flow in the ventilation cavity 19, which is convenient for integrating simple manual control, automatic mechanical control and manual control status identification (to prevent passive movement in the non-operating state), reflecting the diversity of functions.

[0025] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pneumatic multifunctional pressure scanning valve, characterized in that: include: Pressure scanning valve housing (2); A valve body, which is arranged inside the pressure scanning valve housing (2); A valve core structure (7) movably connected to the interior of the valve body; A control structure (8) is rotatably connected to the interior of the valve body; The bottom of the pressure scanning valve housing (2) is fixedly connected to the pressure scanning valve bottom plate (1), the top of the pressure scanning valve housing (2) is assembled to be connected to the cover plate (3), the top of the valve body is assembled to be connected to a plurality of pipe joints (5) extending from the inside of the cover plate (3), the plurality of pipe joints (5) are arranged in two rows, the cover plate (3) is internally embedded with a visual window (4) on a side away from the plurality of pipe joints (5), and a side plate (6) is assembled to be connected to one side of the long side of the pressure scanning valve housing (2), and the side plate (6) is located on a side of the plurality of pipe joints (5) away from the visual window (4); The valve body comprises a first valve body (9) and a second valve body (10), wherein a ventilation cavity (19) is provided inside the first valve body (9) and the second valve body (10), and the ventilation cavities (19) on the first valve body (9) and the second valve body (10) are staggered up and down. Two valve core structures (7) are provided, and are respectively located inside the two ventilation cavities (19). The control structure (8) is provided in plurality and is divided into two groups, one group being movably connected to the inside of the first valve body (9), and the other group passing through the inside of the first valve body (9) and movably connected to the inside of the second valve body (10).

2. The pneumatic multifunctional pressure scanning valve according to claim 1, characterized in that: The valve core structure (7) comprises a supporting core rod (701), the outer portion of the supporting core rod (701) is sleeved with a plurality of sliding sleeves (703), the outer portions of the plurality of sliding sleeves (703) are integrally formed with movable valve components (705), and the outer portions of the movable valve components (705) are sleeved with a fixed valve component (704); Wherein, the plurality of sliding sleeves (703) are independently arranged and all rotate outside the supporting core rod (701).

3. The pneumatic multifunctional pressure scanning valve according to claim 2, characterized in that: The movable valve member (705) is provided with an air vent (17) therein, the fixed valve member (704) is provided with a second notch (15) therein, and both ends of the fixed valve member (704) are provided with a first notch (14); The movable valve member (705) is adapted to be connected to the inner wall of the second slot (15), and the movable valve member (705) connects the two first slots (14) through the air vent (17), and blocks the air vent (17) with the help of the inner walls at both ends of the second slot (15).

4. The pneumatic multifunctional pressure scanning valve according to claim 3, characterized in that: A plurality of limiting arc plates (13) are integrally formed on the side walls of the two ventilation cavities (19), and the plurality of limiting arc plates (13) respectively correspond to a plurality of fixed valve components (704). The fixed valve components (704) are respectively connected to the limiting arc plates (13) through the first notch (14) and the second notch (15), and are slidably connected to the outside of the limiting arc plates (13).

5. The pneumatic multifunctional pressure scanning valve according to claim 2, characterized in that: The plurality of control structures (8) each comprise a control member, one end of the control member being provided with a driving gear (801), and one end of the sliding sleeve (703) being externally pin-connected with an axial gear (702); The driving gear (801) is meshedly connected with one side of the axial gear (702), controlling the axial gear (702) to drive the sliding sleeve (703) to rotate outside the supporting core rod (701), so that the air vent (17) on the movable valve member (705) switches between a blocked state by the fixed valve member (704) and an open state.

6. The pneumatic multifunctional pressure scanning valve according to claim 5, characterized in that: The control member includes two forms. One form is composed of a single operating rod (802), one end of which is integrally formed with a first prism rod (803), and the first prism rod (803) is pin-connected to the inside of the driving gear (801); The other type is composed of an operating rod (802) and a transfer rod (806), wherein a first prism rod (803) is provided at one end of the transfer rod (806), and a second prism rod (805) is integrally formed at one end of the operating rod (802), and the second prism rod (805) is pinned to the interior of the transfer rod (806) at one end away from the driving gear (801); The control member formed by the single operating rod (802) is applied to the valve core structure (7) on the first valve body (9), and the control member formed by the operating rod (802) and the transfer rod (806) passes through the interior of the first valve body (9) and is applied to the valve core structure (7) on the second valve body (10).

7. The pneumatic multifunctional pressure scanning valve according to claim 6, characterized in that: A plurality of air inlet pipes (11) and a plurality of air outlet pipes (12) are provided inside the first valve body (9) and the second valve body (10), and the plurality of air inlet pipes (11) and the plurality of air outlet pipes (12) are coaxially arranged and are connected through the same ventilation cavity (19).

8. The pneumatic multifunctional pressure scanning valve according to claim 6, characterized in that: The operating rod (802) applied to the valve core structure (7) on the first valve body (9) is externally sleeve-connected with a first rubber ring (16), and the side of the first rubber ring (16) away from the driving gear (801) is adapted to be connected to the inner wall of the ventilation cavity (19).

9. The pneumatic multifunctional pressure scanning valve according to claim 8, characterized in that: A second rubber ring (18) is sleeved on the outside of the transfer rod (806) applied to the valve core structure (7) on the second valve body (10), and one side of the second rubber ring (18) is adapted to be connected to the inner wall of the air outlet pipe (12) on the first valve body (9). The first rubber ring (16) is also sleeved on the outside of the transfer rod (806), and the side of the first rubber ring (16) away from the driving gear (801) is adapted to be connected to the inner wall of the ventilation cavity (19).

10. The pneumatic multifunctional pressure scanning valve according to claim 6, characterized in that: The end surface of the operating rod (802) away from the first valve body (9) or the second valve body (10) is processed with a marking strip (804), and the marking strips (804) on the multiple operating rods (802) face the same direction.

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