Double-gland bush rotary plug valve capable of detecting pressure

Abstract

The invention provides a double-gland bush rotary plug valve capable of detecting pressure, and relates to the technical field of valves, the double-gland bush rotary plug valve comprises a rotary plug valve body, and a positioning groove is formed in the bottom of the inner side of the rotary plug valve body; two storage grooves in opposite positions are formed in the bottom of the positioning groove, and a rotary valve plug is rotationally mounted in the positioning groove; a traction rod is mounted at the top of the rotary valve plug; an adjusting groove is formed in the bottom end of the rotating plug valve body, and a guide sliding groove is formed in the side wall of the rotating plug valve body. Medium pressure is converted into air pressure change in the air pressure sealing cavity through sealing and moving changes of the elastic sealing cloth and the guide plate, the first pressure sensor is completely isolated outside a flowing medium, and the problem that the sensitivity of the sensor is reduced due to particulate matter attachment is fundamentally avoided. The problem that due to the influence of particulate matter carried when a medium flows through a valve body for a long time, an adhesion layer is likely to be formed on the surface of the pressure sensor, and a pressure detection value has remarkable deviation is solved.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a double gland sleeve rotary plug valve capable of detecting pressure. Background Art

[0002] The double gland sleeve rotary plug valve adopts a combination of double gland and sleeve. The opening, closing or regulation of the fluid is achieved by rotating the valve core. Installing a double gland sleeve rotary plug valve on a pipeline can control the fluid in the pipeline. The control handle on the valve plug can be rotated 90 degrees to open or close the pipeline.

[0003] In the prior art, when a double-gland sleeve rotary plug valve is in use, a pressure sensor is usually arranged inside the valve body to monitor the pressure of the conveying medium. However, due to the influence of particles carried by the medium when it flows through the valve body for a long time, an adhesion layer is easily formed on the surface of the pressure sensor, resulting in a significant deviation in the pressure detection value, and even causing the control system to misjudge and make mistakes, resulting in delayed valve response speed and aggravated pipeline pressure fluctuations. Summary of the invention

[0004] The disclosed embodiment relates to a double-pressure cap sleeve rotary plug valve capable of detecting pressure, so as to solve the problem that a pressure sensor is usually arranged inside the valve body to monitor the pressure of the conveying medium. However, due to the influence of particulate matter carried by the medium when it flows through the valve body for a long time, an adhesion layer is easily formed on the surface of the pressure sensor, resulting in a significant deviation in the pressure detection value, and even causing the control system to misjudge and make mistakes, resulting in delayed valve response speed and aggravated pipeline pressure fluctuations.

[0005] According to a first aspect of the present disclosure, there is provided a double-pressure cover bushing rotary plug valve capable of detecting pressure, specifically comprising: a rotary plug valve body, connecting flanges are installed on both ends of the input and output of the rotary plug valve body, and a double-pressure cover bushing assembly is installed on the top of the rotary plug valve body, wherein a handle is rotatably installed on the top of the double-pressure cover bushing assembly; a positioning groove is provided at the bottom inner side of the rotary plug valve body; two relatively positioned receiving grooves are provided at the bottom of the positioning groove, and a rotary valve plug is rotatably installed inside the positioning groove; a traction rod is installed on the top of the rotary valve plug; the top of the traction rod is rotatably installed inside the double-pressure cover bushing assembly, and the top of the traction rod is connected to the handle on the top of the double-pressure cover bushing assembly; an adjusting groove is provided inside the bottom end of the rotary plug valve body, and a guide groove is opened inside the side wall of the rotary plug valve body; the bottom of the guide groove is connected to the adjusting groove.

[0006] Furthermore, a guide ring groove and a connecting groove are installed at the input end of the rotary plug valve body; the guide ring groove is an annular structure, and the tops of the two guide ring grooves are connected to the connecting groove; a rotating gear is installed inside the connecting groove; and the top of the rotating gear is located on the outside of the input end of the rotary plug valve body.

[0007] Furthermore, a rotating ring is rotatably installed inside the guide ring groove; the rotating ring is an annular structure, and a serrated structure is provided at the edge of the side of the rotating ring, and the serrated structure is meshed with the side of the rotating gear; a dividing net is provided on the inner side of the rotating ring.

[0008] Furthermore, a through-type guide groove is opened in the middle position of the side of the rotary valve plug; an air pressure sealing cavity is provided at the top and bottom of the guide groove; the air pressure sealing cavity is a circular structure, and guide grooves are provided on both sides of the air pressure sealing cavity, and an elastic sealing cloth is installed at the outer end of the air pressure sealing cavity, and a pressure sensor is installed at the inner end of the air pressure sealing cavity; a spring is installed at the inner end of the air pressure sealing cavity, and a guide plate is installed on the inner side of the air pressure sealing cavity through the spring sliding.

[0009] Furthermore, protrusions are provided on both sides of the guide plate, and the outer side of the guide plate is connected to the inner side of the elastic sealing cloth; two circulation grooves are opened at the bottom of the rotary valve plug, and a circulation groove with an annular structure is provided inside the side wall of the rotary valve plug; the circulation groove is connected to the side of the circulation groove; a plurality of evenly distributed diversion grooves are provided on the outer side of the rotary valve plug; the inner end of the diversion groove is connected to the circulation groove.

[0010] Furthermore, two storage bags are installed at the bottom of the rotary valve plug; the top of the storage bag is connected with the top of the circulation groove; the bottom of the rotary plug valve body is provided with an operating bottom groove; a driving rod is rotatably installed at the middle position of the bottom of the operating bottom groove, and a traction plate is slidably installed inside the operating bottom groove.

[0011] Furthermore, the traction plate is also installed on the outside of the driving rod, and connecting vertical rods are installed on both ends of the traction plate; the top of the connecting vertical rod passes through the bottom of the rotary plug valve body and is located inside the storage groove, and a push plate is installed on the top of the connecting vertical rod; the side of the push plate is an arc structure, and the push plate is also located inside the storage groove, and the push plate is slidably installed on the outside of the storage bag.

[0012] Furthermore, a transmission wheel is rotatably mounted on one side of the inner part of the adjusting groove; a transmission rod is mounted at the middle position of the bottom of the rotary valve plug; the bottom of the transmission rod is rotatably mounted inside the adjusting groove; and a rotating wheel is mounted on the bottom of the transmission rod.

[0013] Furthermore, the rotating wheel is located inside the adjusting groove, and the side surface of the rotating wheel is meshed with the side surface of the transmission wheel; a guide wheel is rotatably installed at the edge of the adjusting groove; the guide wheel is an annular structure, and the serrated structure on the inner side of the guide wheel is meshed with the side surface of the transmission wheel; a sealing slide is installed on the top of the guide wheel.

[0014] Furthermore, the sealing slide is an annular structure, and is rotatably installed inside the guide groove, and the side of the sealing slide is provided with a through-type slot, which is connected to the guide groove; a test slot is provided on the outside of the sealing slide; and a pressure sensor 2 is installed inside the test slot.

[0015] The present invention provides a double gland sleeve rotary plug valve capable of detecting pressure, which has the following beneficial effects:

[0016] When the present invention is in use, the medium pressure is converted into air pressure changes in the air pressure sealing cavity through the sealing and movement changes of the elastic sealing cloth and the guide plate. The pressure sensor is completely isolated from the flowing medium, fundamentally avoiding the problem of decreased sensor sensitivity caused by particle adhesion. The air pressure sealing cavity forms a closed air chamber, which not only ensures the accuracy of pressure transmission, but also eliminates the risk of medium infiltration into the detection system. The pressure sensor does not have the problem of particle adhesion inside the flowing medium, effectively avoiding pressure detection errors, ensuring accurate and rapid detection of internal pressure, greatly improving the response speed of the valve, and effectively guaranteeing the normal use of the pipeline.

[0017] In addition, by rotating the valve plug, the pressure sensor is driven toward the pipeline, realizing real-time pressure detection when the valve is cutting off the flow of the medium, ensuring the pressure fluctuation data during the valve closing process, and providing real-time guarantee for pipeline pressure monitoring. The sealing slide not only plays a transmission role, but also plays a good sealing role, further reducing the risk of valve leakage, effectively improving the sealing performance and reliability of the valve, and ensuring the safe and stable operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 A schematic diagram showing the overall structure of the present application;

[0022] Figure 2 A schematic cross-sectional structure diagram of a rotary plug valve body of the present application is shown;

[0023] Figure 3 A schematic cross-sectional structure diagram of a rotating ring of the present application is shown;

[0024] Figure 4 A schematic diagram of the three-dimensional structure of the rotary valve plug of the present application is shown;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of the traction plate of the present application is shown;

[0026] Figure 6 A schematic diagram of the three-dimensional structure of the guide plate of the present application is shown;

[0027] Figure 7 A schematic diagram of the three-dimensional structure of the rotating wheel of the present application is shown;

[0028] Figure 8 A schematic cross-sectional structure diagram of the sealing slide plate of the present application is shown;

[0029] Fig. 9 A schematic diagram of the three-dimensional structure of the guide wheel of the present application is shown;

[0030] Reference numerals list

[0031] 1. Rotary plug valve body; 101. Double gland bushing assembly; 102. Guide ring groove; 103. Connecting groove; 104. Rotary gear; 105. Rotary ring; 106. Splitting net;

[0032] 2. Positioning groove; 201. Storage groove; 202. Rotary valve plug; 203. Drawbar; 204. Guide groove; 205. Air pressure sealing chamber; 206. Guide groove; 207. Elastic sealing cloth; 208. Pressure sensor 1; 209. Guide plate; 2010. Flow groove; 2011. Circulation groove; 2012. Diversion groove; 2013. Storage capsule; 2014. Operation bottom groove; 2015. Driving rod; 2016. Drawbar; 2017. Connecting vertical rod; 2018. Push plate;

[0033] 3. Adjustment slot; 301. Guide slide slot; 302. Transmission wheel; 303. Transmission rod; 304. Rotating wheel; 305. Guide wheel; 306. Sealing slide plate; 307. Test slot; 308. Pressure sensor 2. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Please refer to Figures 1 to 9 :

[0036] Embodiment 1:

[0037] The present invention proposes a double-pressure cover bushing rotary plug valve capable of detecting pressure, comprising: a rotary plug valve body 1, connecting flanges are installed on both ends of the input and output of the rotary plug valve body 1, and a double-pressure cover bushing assembly 101 is installed on the top of the rotary plug valve body 1, wherein a handle is rotatably installed on the top of the double-pressure cover bushing assembly 101; a guide ring groove 102 and a connecting groove 103 are installed on the input end of the rotary plug valve body 1; the guide ring groove 102 is an annular structure, and the tops of the two guide ring grooves 102 are connected with the connecting groove 103; a rotating gear 104 is installed inside the connecting groove 103; the top of the rotating gear 104 is located on the outside of the input end of the rotary plug valve body 1; a rotating ring 105 is rotatably installed inside the guide ring groove 102; the rotating ring 105 is an annular structure, and a serrated structure is provided at the edge position of the side of the rotating ring 105, and the serrated structure is meshed with the side of the rotating gear 104; a dividing net 106 is provided on the inner side of the rotating ring 105.

[0038] In the disclosed embodiment, when the double-pressure cover sleeve rotary plug valve is in use, the connecting flanges at both ends of the rotary plug valve body 1 are installed on the conveying pipeline, and one end of the guide ring groove 102 with two grooves is connected to the input end of the pipeline as the input end, and the top of the rotating gear 104 is rotated at the top of the input end of the rotary plug valve body 1 to drive the bottom of the rotating gear 104 to rotate inside the connecting groove 103, and the side of the rotating gear 104 is engaged to drive the rotating ring 105 to rotate inside the guide ring groove 102, and the rotating gear 104 drives the two rotating rings 105 to rotate in opposite directions, and the rotating ring 105 drives the inner dividing net 106 to adjust the angle, so that the two dividing nets 106 are adjusted at different angles, so that the gap formed by the dividing net 106 can divert the flowing medium, uniformize the medium flow rate, avoid the problem of valve stem breakage caused by vibration, prevent the medium leakage caused by loosening of flange bolts, and improve the stability and service life of the valve.

[0039] Embodiment 2, on the basis of embodiment 1, a positioning groove 2 is provided at the inner bottom of the rotary plug valve body 1; two receiving grooves 201 at opposite positions are provided at the bottom of the positioning groove 2, and a rotary valve plug 202 is rotatably installed inside the positioning groove 2; a traction rod 203 is installed on the top of the rotary valve plug 202; the top of the traction rod 203 is rotatably installed inside the double gland bushing assembly 101, and the top of the traction rod 203 is connected to the handle at the top of the double gland bushing assembly 101; a through-type guide groove 2 is opened in the middle position of the side of the rotary valve plug 202 04; an air pressure sealing chamber 205 is provided at the top and bottom of the guide groove 204; the air pressure sealing chamber 205 is a circular structure, and guide grooves 206 are provided on both sides of the air pressure sealing chamber 205, and an elastic sealing cloth 207 is installed at the outer end of the air pressure sealing chamber 205, and a pressure sensor 208 is installed at the inner end of the air pressure sealing chamber 205; a spring is installed at the inner end of the air pressure sealing chamber 205, and a guide plate 209 is installed on the inner side of the air pressure sealing chamber 205 through the sliding of the spring; bumps are provided on both sides of the guide plate 209, and the outer side of the guide plate 209 The rotary valve plug 202 is connected to the inner side of the elastic sealing cloth 207; two circulation grooves 2010 are provided at the bottom of the rotary valve plug 202, and a ring-shaped circulation groove 2011 is provided inside the side wall of the rotary valve plug 202; the circulation groove 2011 is connected to the side of the circulation groove 2010; a plurality of evenly distributed diversion grooves 2012 are provided on the outer side of the rotary valve plug 202; the inner end of the diversion groove 2012 is connected to the circulation groove 2011; two storage capsules 2013 are installed at the bottom of the rotary valve plug 202; the top of the storage capsule 2013 is connected to the circulation groove 2010 The top is connected; an operating bottom groove 2014 is provided at the bottom of the rotary plug valve body 1; a driving rod 2015 is rotatably installed at the middle position of the bottom of the operating bottom groove 2014, and a traction plate 2016 is slidably installed inside the operating bottom groove 2014; the traction plate 2016 is also installed on the outside of the driving rod 2015, and connecting vertical rods 2017 are installed on both ends of the traction plate 2016; the top of the connecting vertical rod 2017 passes through the bottom of the rotary plug valve body 1 and is located inside the storage groove 201, and a push plate 2018 is installed on the top of the connecting vertical rod 2017;The side of the push plate 2018 is an arc-shaped structure, and the push plate 2018 is still inside the storage groove 201. The push plate 2018 is slidably installed on the outside of the storage bag 2013. When the double-pressure cover bushing rotary plug valve is in use, the handle on the top of the double-pressure cover bushing assembly 101 drives the traction rod 203 to rotate, and the traction rod 203 drives the rotary valve plug 202 to rotate inside the rotary plug valve body 1. The bottom of the rotary valve plug 202 rotates inside the positioning groove 2, and the handle drives the traction rod 203 to rotate the rotary valve plug 202 so that the side guide groove 204 and the rotary valve body 1 are aligned. The internal space of the rotary plug valve body 1 is connected, which is convenient for the medium in the pipeline to flow through the guide groove 204. The pressure generated when the medium flows will drive the elastic sealing cloth 207 to move inside the air pressure sealing chamber 205. The elastic sealing cloth 207 drives the two side protrusions of the guide plate 209 to move along the guide groove 206. The elastic sealing cloth 207 and the guide plate 209 change the air pressure filled inside the air pressure sealing chamber 205. The pressure sensor 208 detects the changed air pressure. The change in air pressure and the pressure of the medium inside the guide groove 204 There is no problem of particles adhering to the flow medium on the pressure sensor 208, so there will be no problem of error in pressure detection, ensuring accurate and rapid detection of internal pressure, improving the response speed of the valve, and ensuring the normal use of the pipeline. When the rotary valve plug 202 has not rotated for a long time, the driving rod 2015 is rotated inside the operating bottom groove 2014, and the driving rod 2015 drives the traction plate 2016 to move along the operating bottom groove 2014, then the two ends of the traction plate 2016 drive the push plate 2016 connected to the top of the vertical rod 2017. 18 moves outward from the inside of the storage groove 201, so that the push plate 2018 squeezes the storage capsule 2013, and the lubricating oil inside the storage capsule 2013 flows through the circulation groove 2010, so that the lubricating oil is diverted to the inside of the two circulation grooves 2011, and the lubricating oil flows out through the diverting groove 2012 outside the circulation groove 2011, lubricating the top and bottom outside of the rotary valve plug 202, ensuring the smooth rotation of the rotary valve plug 202, preventing the problem of rusting and causing the amount of unsmoothness, improving the response speed of the valve, and timely cutting off or the flow of the medium in the pipeline. ;

[0040] Embodiment 3, on the basis of embodiment 1, an adjusting groove 3 is provided inside the bottom end of the rotary plug valve body 1, and a guide groove 301 is provided inside the side wall of the rotary plug valve body 1; the bottom of the guide groove 301 is connected to the adjusting groove 3; a transmission wheel 302 is rotatably installed on one side of the adjusting groove 3; a transmission rod 303 is installed at the middle position of the bottom of the rotary valve plug 202; the bottom of the transmission rod 303 is rotatably installed inside the adjusting groove 3; a rotating wheel 304 is installed at the bottom of the transmission rod 303; the rotating wheel 304 The side of the rotating wheel 304 is meshed with the side of the transmission wheel 302 inside the adjusting groove 3; a guide wheel 305 is rotatably installed at the edge of the adjusting groove 3; the guide wheel 305 is an annular structure, and the serrated structure inside the guide wheel 305 is meshed with the side of the transmission wheel 302; a sealing slide plate 306 is installed on the top of the guide wheel 305; the sealing slide plate 306 is an annular structure, and the sealing slide plate 306 is rotatably installed inside the guide groove 301, and the side of the sealing slide plate 306 is provided with a through hole The groove is connected to the guide groove 204; a test groove 307 is provided on the outer side of the sealing slide plate 306; a pressure sensor 2 308 is installed inside the test groove 307. When the double gland sleeve rotary plug valve is in use, the rotary valve plug 202 is rotated to cut off the flow of the pipeline medium, and the bottom of the rotary valve plug 202 drives the bottom rotating wheel 304 to rotate inside the adjusting groove 3 through the transmission rod 303, and the side of the rotating wheel 304 drives the guide wheel 305 to rotate through the transmission wheel 302, and the top of the guide wheel 305 drives the sealing slide plate 306 to rotate inside the guide slide groove 301. When the rotary valve plug 202 rotates, the sealing slide plate 306 is synchronously driven to rotate, so that the pressure sensor 2 308 inside the test groove 307 outside the sealing slide plate 306 faces the connected pipeline, and the medium pressure in the pipeline is detected in time during the cutting process, and the medium pressure is also detected in time during the flow interruption process. In addition, the sealing slide plate 306 plays a sealing role, which further reduces the leakage problem of the valve.

[0041] The working principle of this embodiment: when in use, the connecting flanges at both ends of the rotary plug valve body 1 are installed on the conveying pipeline, and the rotating gear 104 is rotated to drive the rotating ring 105 to rotate in the guide ring groove 102. The rotating gear 104 drives the two rotating rings 105 to rotate in opposite directions. The dividing net 106 on the inner side of the rotating ring 105 is adjusted in angle. The gap formed by the two dividing nets 106 guides the flowing medium uniformly. The medium in the pipeline flows through the guide groove 204. The pressure generated by the medium will drive the elastic sealing cloth 207 and the guide plate 209 to change the air pressure filled inside the air pressure sealing cavity 205. The pressure sensor 208 detects the changing air pressure, the change of air pressure and the pressure of the medium inside the guide groove 204. There is no problem of flowing medium particles adhering to the pressure sensor 208, which ensures accurate and rapid detection of the internal pressure. The driving rod 2015 rotates in the bottom groove 2014 to drive the push plates 2018 connected to the top of the vertical rods 2017 at both ends of the traction plate 2016 to squeeze the storage bag 213, and the lubricating oil inside the storage bag 2013 is diverted to the two circulation grooves 2011 through the circulation groove 2010, and the lubricating oil flows out through the diversion groove 2012 to lubricate the rotation of the rotary valve plug 202, and the handle on the top of the double pressure cover bushing assembly 101 drives the rotary valve plug 202 to cut off the flow of the medium through the traction rod 203, and the transmission rod 303 at the bottom of the rotary valve plug 202 drives the rotating wheel 304 to drive the guide wheel 305 to rotate through the transmission wheel 302, and the guide wheel 305 drives the sealing slide plate 306 to rotate synchronously with the rotary valve plug 202 to cut off the flow of the medium, and the pressure sensor 2 308 in the test groove 307 faces the connected pipeline to detect the medium pressure in the pipeline to reduce the leakage problem of the valve.

[0042] In this article, there are a few points to note:

[0043] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0044] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0045] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A double gland sleeve rotary plug valve capable of detecting pressure, comprising: A rotary plug valve body (1), wherein connecting flanges are installed on both ends of the input and output of the rotary plug valve body (1), and a double gland bushing assembly (101) is installed on the top of the rotary plug valve body (1), wherein a handle is rotatably installed on the top of the double gland bushing assembly (101); the rotary plug valve body (1) is characterized in that a positioning groove (2) is provided at the bottom of the inner side of the rotary plug valve body (1); two receiving grooves (201) at opposite positions are provided at the bottom of the positioning groove (2), and a rotary valve plug (202) is rotatably installed inside the positioning groove (2); a traction rod (203) is installed on the top of the rotary valve plug (202); the traction rod (203) is installed on the top of the rotary valve plug (202); The top of the guide rod (203) is rotatably mounted inside the double gland bushing assembly (101), and the top of the traction rod (203) is connected to the handle at the top of the double gland bushing assembly (101); a through-type guide groove (204) is provided at the middle position of the side of the rotary valve plug (202); a pneumatic sealing cavity (205) is provided at the top and bottom of the guide groove (204); an adjustment groove (3) is provided inside the bottom end of the rotary plug valve body (1), and a guide slide groove (301) is provided inside the side wall of the rotary plug valve body (1); and the bottom of the guide slide groove (301) is connected to the adjustment groove (3).

2. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 1, characterized in that: The input end of the rotary plug valve body (1) is provided with a guide ring groove (102) and a connecting groove (103); the tops of the two guide ring grooves (102) are connected to the connecting groove (103); a rotating gear (104) is installed inside the connecting groove (103); and the top of the rotating gear (104) is located outside the input end of the rotary plug valve body (1).

3. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 2, characterized in that: A rotating ring (105) is rotatably mounted inside the guide ring groove (102); a sawtooth structure is provided at the edge of the side of the rotating ring (105), and the sawtooth structure meshes with the side of the rotating gear (104); and a dividing net (106) is provided on the inner side of the rotating ring (105).

4. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 3, characterized in that: Guide grooves (206) are provided on both sides of the air pressure sealing chamber (205), an elastic sealing cloth (207) is installed at the outer end of the air pressure sealing chamber (205), and a pressure sensor (208) is installed at the inner end of the air pressure sealing chamber (205); a spring is installed at the inner end of the air pressure sealing chamber (205), and a guide plate (209) is slidably installed on the inner side of the air pressure sealing chamber (205) via the spring.

5. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 4, characterized in that: The guide plate (209) is provided with protrusions on both sides, and the outer side of the guide plate (209) is connected to the inner side of the elastic sealing cloth (207); the bottom of the rotary valve plug (202) is provided with two circulation grooves (2010), and the inner side of the side wall of the rotary valve plug (202) is provided with a circulation groove (2011) with an annular structure; the circulation groove (2011) is connected to the side of the circulation groove (2010); the outer side of the rotary valve plug (202) is provided with a plurality of evenly distributed diversion grooves (2012); the inner end of the diversion groove (2012) is connected to the circulation groove (2011).

6. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 5, characterized in that: Two storage bags (2013) are installed at the bottom of the rotary valve plug (202); the top of the storage bag (2013) is connected to the top of the circulation groove (2010); the bottom of the rotary plug valve body (1) is provided with an operating bottom groove (2014); a driving rod (2015) is rotatably installed at the middle position of the bottom of the operating bottom groove (2014), and a traction plate (2016) is slidably installed inside the operating bottom groove (2014).

7. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 6, characterized in that: The traction plate (2016) is also installed on the outside of the driving rod (2015), and connecting vertical rods (2017) are installed on both ends of the traction plate (2016); the top of the connecting vertical rod (2017) passes through the bottom of the rotary plug valve body (1) and is located inside the storage groove (201), and a push plate (2018) is installed on the top of the connecting vertical rod (2017); the push plate (2018) is also inside the storage groove (201), and the push plate (2018) is slidably installed on the outside of the storage bag (2013).

8. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 7, characterized in that: A transmission wheel (302) is rotatably mounted on one side of the interior of the adjustment groove (3); a transmission rod (303) is mounted at the middle position of the bottom of the rotary valve plug (202); the bottom of the transmission rod (303) is rotatably mounted inside the adjustment groove (3); and a rotating wheel (304) is mounted on the bottom of the transmission rod (303).

9. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 8, characterized in that: The rotating wheel (304) is located inside the adjusting groove (3), and the side surface of the rotating wheel (304) meshes with the side surface of the transmission wheel (302); a guide wheel (305) is rotatably mounted on the edge of the adjusting groove (3); the sawtooth structure on the inner side of the guide wheel (305) meshes with the side surface of the transmission wheel (302); and a sealing slide plate (306) is mounted on the top of the guide wheel (305).

10. A double gland sleeve rotary plug valve capable of detecting pressure according to claim 9, characterized in that: The sealing slide plate (306) is rotatably mounted inside the guide groove (301), and a through-type slot is provided on the side of the sealing slide plate (306), and the slot is connected to the guide groove (204); a test slot (307) is provided on the outside of the sealing slide plate (306); and a second pressure sensor (308) is installed inside the test slot (307).

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