Swash plate type check valve

Abstract

The invention relates to the technical field of valves, in particular to a swash plate type check valve which comprises a check valve body, a valve seat, a valve clack body and an adjusting block, the check valve body is provided with a mounting cavity, the valve seat is embedded in the mounting cavity, the valve clack body is rotationally embedded in the mounting cavity, and the rotating axis of the valve clack body is perpendicular to the axis of the check valve body; the valve clack body is used for abutting against the valve seat to seal the check valve body, the adjusting block is embedded in the mounting cavity in a sliding mode, the sliding direction of the adjusting block is parallel to the axis of the check valve body, and the adjusting block is located on the side, away from the valve seat, of the valve clack body and used for abutting against the end, away from the valve seat, of the valve clack body. When a medium impacts the valve clack body, drives the valve clack body to rotate and abuts against the adjusting block, the valve clack body is opened to the maximum opening degree, at the moment, the flow of the check valve is the maximum, adjustment of the maximum opening degree of the valve clack body is achieved by adjusting the position of the adjusting block, then adjustment of the maximum flow of the check valve is achieved, and the functionality of the check valve is improved; and the use cost of the check valve is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and particularly to a tilting disc check valve. Background Art

[0002] A check valve refers to a valve whose closing member is a circular valve flap and which blocks the reverse flow of the medium by its own weight and the action of the medium pressure. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. Currently, common check valves include swing check valves, lift check valves, butterfly check valves and tilting disc check valves.

[0003] Among them, the tilting disc check valve adopts a structural form in which the sealing surface is inclined with respect to the axis of the valve body. It has the advantages of small rotation angle, flexible movement and small impact on the sealing surface. The medium flows in from the inlet end and out from the outlet end. When the inlet pressure is greater than the sum of the valve flap weight and its flow resistance, the valve is opened. Conversely, when the medium flows backward, the valve closes.

[0004] As disclosed in the utility model patent "Built-in Tilting Disc Check Valve" with the patent number CN202022741456.7, the spherical sealing surface on the outer ring of the valve flap abuts against the conical sealing surface on the inner ring of the valve seat to form a seal. When the valve flap rotates away from the valve seat, the check valve is connected. However, this patent does not have the function of adjusting the rotation angle of the valve flap and cannot adjust the flow rate of the check valve. When it is necessary to adjust the flow rate of the medium, a regulating valve can only be installed on the pipeline, which not only increases the cost but also makes the operation more cumbersome. Summary of the Invention

[0005] In order to achieve the adjustment of the maximum flow rate of the check valve, improve the functionality of the check valve and reduce the use cost of the check valve, the present application provides a tilting disc check valve.

[0006] The tilting disc check valve provided by the present application adopts the following technical solutions: A tilting disc check valve includes a check valve body, a valve seat, a valve flap body and an adjusting block. The check valve body is provided with an installation cavity. The valve seat is embedded in the installation cavity. The valve flap body is rotatably embedded in the installation cavity. The rotation axis of the valve flap body is perpendicular to the axis of the check valve body. The valve flap body is used to abut against the valve seat to close the check valve body. The adjusting block is slidably embedded in the installation cavity. The sliding direction of the adjusting block is parallel to the axis of the check valve body. The adjusting block is located on the side of the valve flap body away from the valve seat. The adjusting block is used for the end of the valve flap body away from the valve seat to abut against.

[0007] By adopting the above technical solution, the medium impacts the valve flap body, driving the valve flap body to rotate. When the valve flap body abuts against the adjusting block, the valve flap body opens to the maximum opening degree. At this time, the flow rate of the check valve is the largest. By adjusting the position of the adjusting block, the adjustment of the maximum opening degree of the valve flap body is realized, and then the adjustment of the maximum flow rate of the check valve is realized, improving the functionality of the check valve and reducing the use cost of the check valve.

[0008] Preferably, the check valve body includes a valve body, a valve cover, a first stud and a first nut. The valve cover and the valve body are correspondingly formed with inclined surfaces. The outer periphery of the valve cover near one end of the inclined surface is connected with a first fixing ring. The outer periphery of the valve body near one end of the inclined surface is connected with a second fixing ring. The first fixing ring is provided with a plurality of first fixing holes, and the plurality of first fixing holes are circumferentially spaced apart around the axis of the first fixing ring. The second fixing ring is provided with a first connection hole, and the number of the first connection holes is the same as and corresponds to the number of the first fixing holes one by one. The second fixing ring is provided with a plurality of second fixing holes, and the plurality of second fixing holes are circumferentially spaced apart around the axis of the second fixing ring. The first fixing ring is provided with a second connection hole, and the number of the second connection holes is the same as and corresponds to the number of the second fixing holes one by one. The number of the first studs and the first nuts is the same as and corresponds to the sum of the number of the first connection holes and the second connection holes one by one. The first stud passes through the first connection hole and is threadedly connected with the first fixing hole or passes through the second connection hole and is threadedly connected with the second fixing hole. The first nut is threadedly connected to the first stud, and the first nut abuts against one side of the first fixing ring away from the second fixing ring or one side of the second fixing ring away from the first fixing ring. The valve flap body and the adjusting block of the valve cover are located in the valve body.

[0009] By adopting the above technical solution, the valve cover and the valve body are assembled to form the check valve body. By loosening the first stud and the first nut, the disassembly of the valve cover and the valve cover is realized, which is convenient for replacing and overhauling the valve seat and the valve flap body in the installation cavity, and improving the service life of the check valve.

[0010] Preferably, one end of the valve body near the valve cover is provided with a second installation groove, one end of the valve seat abuts against the bottom of the second installation groove, one end of the valve cover near the valve body is provided with a first installation groove, and the other end of the valve seat is used to abut against the bottom of the first installation groove.

[0011] By adopting the above technical solution, the settings of the second installation groove and the first installation groove facilitate the assembly of the valve body and the valve cover with the valve seat, improve the stability of the valve seat assembly, reduce the possibility of the valve seat loosening or shifting caused by vibration or other external factors, and improve the overall sealing performance and reliability of the check valve.

[0012] Preferably, it further includes a screw. The valve seat is provided with a third connection hole, and the bottom of the second installation groove is provided with a third fixing hole. The screw passes through the third connection hole and is threadedly connected to the third fixing hole. A third embedding groove is provided at the hole wall of the third connection hole away from the bottom of the second installation groove, and the third embedding groove is used for the head of the screw to be embedded.

[0013] By adopting the above technical solution, the screw passes through the third connection hole and is threadedly connected to the third fixing hole, realizing the fixed connection between the valve seat and the valve body, so that the valve seat and the valve body are assembled with the valve cover as a whole, improving the convenience of assembling the check valve. A third embedding groove is provided at the hole wall of the third connection hole away from the bottom of the second installation groove, and the third embedding groove is used for the head of the screw to be embedded, so that the end of the valve seat for abutting against the bottom of the first installation groove is a plane, improving the compactness of the overall structure of the check valve.

[0014] Preferably, it further includes a sealing ring. Sealing grooves are respectively provided at both ends of the valve seat. The number of the sealing rings is the same as that of the sealing grooves and they correspond one by one. The sealing rings are embedded in the sealing grooves, and one end of the sealing ring away from the bottom of the sealing groove abuts tightly against the bottom of the first installation groove or the second installation groove.

[0015] By adopting the above technical solution, sealing grooves are respectively provided at both ends of the valve seat. The two sealing rings are respectively embedded in the two sealing grooves and abut tightly against the bottoms of the first installation groove and the second installation groove, reducing the possibility of leakage at the joints between the valve seat and the valve cover and the valve body, and improving the sealing performance of the check valve.

[0016] Preferably, it further includes an adjusting assembly. The adjusting assembly includes a lead screw, a transmission component and a driving rod. An adjusting seat is connected to the wall of the installation cavity. The lead screw is rotatably connected to the adjusting seat. The rotation axis of the lead screw is parallel to the sliding direction of the adjusting block. The lead screw is threadedly connected to the adjusting block. The driving rod is rotatably connected to the check valve body. The rotation axis of the driving rod is perpendicular to the rotation axis of the lead screw. The driving rod is used to drive the lead screw to rotate. One end of the driving rod passes through the wall of the installation cavity and extends out of the check valve body. The transmission component is connected between the driving rod and the lead screw.

[0017] By adopting the above technical solution, rotate the driving rod, drive the lead screw to rotate through the transmission component. The lead screw is threadedly connected to the adjusting block, driving the adjusting block to slide, realizing the precise adjustment of the maximum flow rate of the check valve, and improving the reliability of the check valve.

[0018] Preferably, the transmission component includes a worm gear and a worm. The worm gear is coaxially connected to the lead screw, and the worm is coaxially connected to the driving rod. The worm meshes with the worm gear.

[0019] By adopting the above technical solution, the cooperation between the worm gear and the worm drives the rotating rod to rotate and drive the lead screw to rotate, thereby driving the adjusting block to accurately move along the axis direction of the check valve body. Moreover, the worm gear and the worm have a self-locking performance, which can reduce the possibility of unexpected displacement of the adjusting block due to external vibration, ensuring the stable and reliable position adjustment of the valve flap body.

[0020] Preferably, the adjusting assembly further includes an indicating disk coaxially connected to the outer periphery of the driving rod. Scale lines are provided on one side of the indicating disk away from the check valve body, and an indicating arrow is provided on the outer wall of the check valve body for aligning with the scale lines.

[0021] By adopting the above technical solution, the setting of the indicating disk can visually display the rotation position of the driving rod, facilitating the operator to accurately control the adjustment range of the adjusting assembly. The cooperation between the scale lines and the indicating arrow further improves the adjustment accuracy of the adjusting block, enhancing the convenience of operating the check valve.

[0022] Preferably, it further includes a damper, a connecting rod, and a slider. The damper is connected to the adjusting seat and is located on the side of the adjusting block close to the valve seat. The slider is slidably connected to the adjusting seat, and the sliding direction of the slider is parallel to the sliding direction of the adjusting block. The two ends of the slider along the sliding direction of the slider are respectively used to abut against the damper and the adjusting block, and the two ends of the connecting rod are respectively hinged to the valve flap body and the slider.

[0023] By adopting the above technical solution, when the valve flap body rotates and drives the slider to slide through the connecting rod, when the valve flap body approaches the valve seat, the slider first abuts against the damper, and the damper absorbs the impact force of the slider, slowing down the rotation speed of the valve flap body, so that the valve flap body slowly abuts against the valve seat, reducing the possibility of damage to the valve flap body or the valve seat caused by the valve flap body hitting the valve seat, and improving the service life of the check valve.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the medium impacts the valve flap body and drives the valve flap body to rotate, when the valve flap body abuts against the adjusting block, the valve flap body opens to the maximum opening degree. At this time, the flow rate of the check valve is the largest. By adjusting the position of the adjusting block, the adjustment of the maximum opening degree of the valve flap body is realized, and then the adjustment of the maximum flow rate of the check valve is realized, improving the functionality of the check valve and reducing the use cost of the check valve; 2. The cooperation between the worm gear and the worm drives the rotating rod to rotate and drive the lead screw to rotate, thereby driving the adjusting block to accurately move along the axis direction of the check valve body. Moreover, the worm gear and the worm have a self-locking performance, which can reduce the possibility of unexpected displacement of the adjusting block due to external vibration, ensuring the stable and reliable position adjustment of the valve flap body; 3. The valve flap body rotates, driving the slider to slide through the connecting rod. When the valve flap body approaches the valve seat, the slider first abuts against the damper. The damper absorbs the impact force of the slider, slows down the rotation speed of the valve flap body, so that the valve flap body slowly abuts against the valve seat, reducing the possibility that the valve flap body impacts the valve seat and causes damage to the valve flap body or the valve seat, and improving the service life of the check valve. Brief Description of the Drawings

[0025] Figure 1 is a cross-sectional view of an inclined disk type check valve.

[0026] Figure 2 is a partial cross-sectional view of an inclined disk type check valve, mainly showing the rotating seat.

[0027] Figure 3 is Figure 1 an enlarged view of part A in

[0028] Figure 4 is a partial cross-sectional view of an inclined disk type check valve, mainly showing the adjusting seat and the adjusting component.

[0029] Figure 5 is a cross-sectional view of an inclined disk type check valve, mainly showing the adjusting seat and the connecting rod.

[0030] Figure 6 is Figure 1 an enlarged view of part B in

[0031] Figure 7 is a partial cross-sectional view of an inclined disk type check valve, mainly showing the prompting component.

[0032] Figure 8 is a partial cross-sectional view of an inclined disk type check valve, mainly showing the gear, the rack and the contact switch.

[0033] Description of the Reference Numerals: 1. Check valve body; 11. Installation cavity; 12. Valve body; 121. Second installation groove; 122. Second fixing ring; 1221. First connection hole; 1222. Second fixing hole; 123. Third fixing hole; 124. Indication arrow; 125. Second connection ring; 126. Second ring groove; 127. Second installation hole; 128. Liquid outlet channel; 129. Rotating seat; 1291. Fourth fixing hole; 1210. First communication hole; 1211. Fixing seat; 12111. Groove; 13. Valve cover; 131. First installation groove; 132. First fixing ring; 1321. First fixing hole; 1322. Second connection hole; 133. First connection ring; 134. First ring groove; 135. First installation hole; 136. Liquid inlet channel; 137. Rotating groove; 138. Prompt seat; 1381. Cavity; 1382. First embedding groove; 14. First stud; 15. First nut; 16. End cover; 161. Convex column; 162. Fourth connection hole; 17. Second stud; 18. Second nut; 19. Adjusting seat; 191. Third chamfer; 192. Slide groove; 193. Guide groove; 194. Accommodating groove; 110. Connecting rod; 111. Second communication hole; 112. Third communication hole; 2. Valve seat; 21. Third connection hole; 22. Third embedding groove; 23. Sealing groove; 24. First chamfer; 3. Valve flap assembly; 31. Valve flap body; 311. Connection seat; 3111. Rotating hole; 312. Second chamfer; 313. Counterweight; 32. Connecting rod; 33. Slide block; 34. Pin shaft; 341. Connecting column; 35. Bearing; 4. Sealing ring; 5. Adjusting block; 51. Guide block; 6. Adjusting assembly; 61. Lead screw; 62. Transmission component; 621. Worm gear; 622. Worm; 63. Driving rod; 64. Indication disk; 641. Scale line; 7. Damper; 8. Screw; 9. Prompt assembly; 91. Impeller; 92. Rotating shaft; 93. Turntable; 94. Pawl; 95. First reset component; 96. Ratchet; 97. Gear; 98. Rack; 99. Second reset component; 910. Contact switch; 911. Indicator lamp. Detailed implementation manners

[0034] The following further elaborates on this application in conjunction with the attached drawings.

[0035] Refer to Figure 1, an embodiment of the present application discloses an inclined disk check valve, which includes a check valve body 1. The check valve body 1 includes a valve body 12 and a valve cover 13, and the axis of the valve cover 13 coincides with the axis of the valve body 12. A first connection ring 133 is coaxially and fixedly connected to the outer wall of the valve cover 13 on the side away from the valve body 12. The surface of the first connection ring 133 away from the valve body 12 is flush with the end of the valve cover 13 away from the valve body 12. A first annular groove 134 is coaxially provided on the outer periphery of the end of the first connection ring 133 away from the valve body 12. A plurality of first mounting holes 135 are provided at the bottom of the first annular groove 134, and the plurality of first mounting holes 135 are circumferentially spaced apart around the axis of the first connection ring 133. In this embodiment, there are twelve first mounting holes 135, and the twelve first mounting holes 135 are circumferentially evenly distributed around the axis of the first connection ring 133. A second connection ring 125 is coaxially and fixedly connected to the outer wall of the valve body 12 on the side away from the valve cover 13. The outer wall of the second connection ring 125 is flush with the outer wall of the first connection ring 133, and the surface of the second connection ring 125 away from the valve cover 13 is flush with the end of the valve body 12 away from the valve cover 13. A second annular groove 126 is coaxially provided on the outer periphery of the end of the second connection ring 125 away from the valve cover 13. A plurality of second mounting holes 127 are provided at the bottom of the second annular groove 126, and the plurality of second mounting holes 127 are circumferentially spaced apart around the axis of the second connection ring 125. In this embodiment, there are twelve second mounting holes 127, and the twelve second mounting holes 127 are circumferentially evenly distributed around the axis of the second connection ring 125.

[0036] An inclined disk type check valve further includes a valve seat 2 and a screw 8. The valve cover 13 is provided with a liquid inlet passage 136, and the valve body 12 is provided with a liquid outlet passage 128. The liquid inlet passage 136 and the liquid outlet passage 128 are communicated with each other. The inner wall of the liquid inlet passage 136 near the valve body 12 is flush with the inner wall of the liquid outlet passage 128 near the valve cover 13. The liquid inlet passage 136 and the liquid outlet passage 128 form an installation cavity 11. One ends of the valve cover 13 and the valve body 12 correspondingly form an inclined surface. One end of the valve body 12 near the inclined surface is provided with a second installation groove 121. The second installation groove 121 is communicated with the liquid outlet passage 128. The second installation groove 121 is annular and is arranged around the liquid outlet passage 128. The valve seat 2 is embedded in the second installation groove 121. One end of the valve seat 2 abuts against the bottom of the second installation groove 121, and the outer wall of the valve seat 2 fits with the groove wall of the second installation groove 121. One end of the valve cover 13 near the inclined surface is provided with a first installation groove 131. The first installation groove 131 is communicated with the liquid inlet passage 136. The first installation groove 131 is annular and is arranged around the liquid inlet passage 136. The groove wall of the first installation groove 131 is flush with the groove wall of the second installation groove 121. The other end of the valve seat 2 abuts against the bottom of the first installation groove 131, and the side wall of the valve seat 2 fits with the groove wall of the first installation groove 131. In this embodiment, the included angle between the axis of the valve seat 2 and the axis of the check valve body 1 is 60°. The valve seat 2 is provided with a plurality of third connection holes 21. The third connection holes 21 penetrate through the valve seat 2 along the axis of the valve seat 2, and the plurality of third connection holes 21 are circumferentially spaced apart around the axis of the valve seat 2. In this embodiment, there are four third connection holes 21, and the four third connection holes 21 are circumferentially evenly distributed around the axis of the valve seat 2. The bottom of the second installation groove 121 is provided with third fixing holes 123. The number of the third fixing holes 123 and the screws 8 is the same as the number of the third connection holes 21 and they correspond to each other one by one. The screws 8 pass through the third connection holes 21 and are threadedly connected with the third fixing holes 123. A third embedding groove 22 is provided at the hole wall of one end of the third connection hole 21 far from the bottom of the second installation groove 121. The third embedding groove 22 is used for embedding the head of the screw 8.

[0037] An inclined disk type check valve further includes a sealing ring 4. Sealing grooves 23 are respectively provided at both ends of the valve seat 2 along the axis direction of the valve seat 2. The sealing grooves 23 are located inside the third connection holes 21. The sealing grooves 23 are annular, and the axis of the sealing grooves 23 coincides with the axis of the valve seat 2. The number of the sealing rings 4 is the same as the number of the sealing grooves 23 and they correspond to each other one by one. The sealing rings 4 are embedded in the sealing grooves 23. One end of the sealing ring 4 abuts tightly against the bottom of the sealing groove 23, and the other end of the sealing ring 4 abuts tightly against the bottom of the first installation groove 131 or the second installation groove 121.

[0038] The check valve body 1 further includes a first stud 14 and a first nut 15. An outer periphery of one end of the valve body 12 close to the second installation groove 121 is fixedly connected with a second fixing ring 122. An axis of the second fixing ring 122 coincides with an axis of the second installation groove 121. A surface of the second fixing ring 122 close to the valve cover 13 is flush with one end of the valve body 12 close to the valve cover 13. An outer periphery of one end of the valve cover 13 close to the first installation groove 131 is fixedly connected with a first fixing ring 132. A surface of the first fixing ring 132 close to the valve body 12 is flush with one end of the valve cover 13 close to the valve body 12. An outer wall of the first fixing ring 132 is flush with an outer wall of the second fixing ring 122. A plurality of first fixing holes 1321 are provided on a side of the first fixing ring 132 close to the first connection ring 133. Axes of the first fixing holes 1321 are parallel to an axis of the first fixing ring 132. The plurality of first fixing holes 1321 are circumferentially spaced apart around the axis of the first fixing ring 132. In this embodiment, four first fixing holes 1321 are provided, and the four first fixing holes 1321 are circumferentially evenly distributed around the axis of the first fixing ring 132. The second fixing ring 122 is provided with first connection holes 1221, and the number of the first connection holes 1221 is the same as and corresponds to the number of the first fixing holes 1321 one by one. A plurality of second fixing holes 1222 are provided on a side of the second fixing ring 122 close to the second connection ring 125. Axes of the second fixing holes 1222 are parallel to an axis of the second fixing ring 122. A distance from an axis of the second fixing holes 1222 to the axis of the second fixing ring 122 is equal to a distance from an axis of the first connection holes 1221 to the axis of the second fixing ring 122. The plurality of second fixing holes 1222 are circumferentially spaced apart around the axis of the second fixing holes 1222. In this embodiment, six second fixing holes 1222 are provided, and the six second fixing holes 1222 are circumferentially evenly distributed around the axis of the second fixing ring 122. The first fixing ring 132 is provided with second connection holes 1322, and the number of the second connection holes 1322 is the same as and corresponds to the number of the second fixing holes 1222 one by one. The number of the first studs 14 and the first nuts 15 is the same as and corresponds to the sum of the number of the second fixing holes 1222 and the number of the first fixing holes 1321 one by one. The first stud 14 is threadedly connected with the first fixing hole 1321 after passing through the first connection hole 1221 or is threadedly connected with the second fixing hole 1222 after passing through the second connection ring 125. The first nut 15 is threadedly connected to one end of the first stud 14 away from the first fixing hole 1321 or the second fixing hole 1222, and the first nut 15 abuts against a surface of the first fixing ring 132 away from the second fixing ring 122 or a surface of the second fixing ring 122 away from the first fixing ring 132.

[0039] Refer to Figure 1 and Figure 2, a swashplate check valve further includes a valve flap assembly 3. A rotating seat 129 is fixedly connected to the outer wall of the valve body 12. The axis of the rotating seat 129 is perpendicular to the axis of the valve body 12. There are two rotating seats 129, and the two rotating seats 129 are symmetrically distributed along the axis of the rotating seat 129. The rotating seat 129 is coaxially provided with a first communication hole 1210, and the first communication hole 1210 communicates the liquid outlet channel 128 with the outside. The valve flap assembly 3 includes a pin shaft 34. The number of pin shafts 34 is the same as and corresponds one-to-one with the number of rotating seats 129. The pin shaft 34 is coaxially embedded in the first communication hole 1210, and the side wall of the pin shaft 34 is in contact with the hole wall of the first communication hole 1210. The check valve body 1 further includes an end cover 16, a second stud 17 and a second nut 18. The number of end covers 16 is the same as and corresponds one-to-one with the number of rotating seats 129. One end of the end cover 16 is in contact with the end of the rotating seat 129 away from the valve body 12. The outer wall of the end cover 16 is flush with the outer wall of the rotating seat 129. A convex column 161 is coaxially fixedly connected to one end of the end cover 16 close to the rotating seat 129. The convex column 161 is embedded in the first communication hole 1210. One end of the convex column 161 away from the end cover 16 abuts against one end of the pin shaft 34 away from the liquid outlet channel 128. The side wall of the convex column 161 is in contact with the hole wall of the first communication hole 1210. A plurality of fourth fixing holes 1291 are provided at the end of the rotating seat 129 away from the valve body 12. The plurality of fourth fixing holes 1291 are circumferentially spaced apart along the axis of the rotating seat 129. In this embodiment, there are four fourth fixing holes 1291, and the four fourth fixing holes 1291 are circumferentially evenly distributed along the axis of the rotating seat 129. The end cover 16 is provided with a fourth connection hole 162. The number of the fourth connection holes 162, the second studs 17 and the second nuts 18 is the same as and corresponds one-to-one with the number of the fourth fixing holes 1291. The second stud 17 passes through the fourth connection hole 162 and is threadedly connected to the fourth fixing hole 1291. The second nut 18 is threadedly connected to one end of the second stud 17 away from the fourth fixing hole 1291. The second nut 18 abuts against one side surface of the end cover 16 away from the rotating seat 129.

[0040] The valve flap assembly 3 further includes a valve flap main body 31 and a bearing 35. The valve flap main body 31 is rotatably embedded in the liquid outlet channel 128. The rotation axis of the valve flap main body 31 coincides with the axis of the pin shaft 34. A connecting seat 311 is fixedly connected to the side of the valve flap main body 31 away from the valve seat 2. There are two connecting seats 311, and the two connecting seats 311 are symmetrically distributed along the rotation axis of the valve flap main body 31. The connecting seat 311 is provided with a rotation hole 3111. One end of the pin shaft 34 close to the connecting seat 311 is coaxially fixedly connected with a connecting column 341. The connecting column 341 is coaxially embedded in the rotation hole 3111. One end of the pin shaft 34 away from the end cover 16 abuts against one side surface of the connecting seat 311 away from the other connecting seat 311. The number of bearings 35 is the same as and corresponds one-to-one with the number of connecting columns 341. The bearing 35 is coaxially connected to the outer periphery of the connecting column 341. The inner wall of the bearing 35 is in contact with the outer wall of the connecting column 341. The outer wall of the bearing 35 is in contact with the hole wall of the rotation hole 3111.

[0041] Referring to Figure 1 and Figure 3

[0042]

[0043] Figure 3 Figure 4 Referring to Figure 3 and Figure 4

[0044] Figure 1 Referring to Figure 1 and Figure 4

[0045] Figure 4 Referring to Figure 4 and Figure 5 ,the valve seat 2 is annular, the distance from the inner wall of the valve seat 2 to the axis of the valve seat 2 is less than the distance from the inner wall of the liquid outlet passage 128 to the axis of the valve seat 2. A first chamfer 24 is provided at one end of the inner wall of the valve seat 2 close to the liquid outlet passage 128. The valve flap body 31 is in the shape of a circular plate, the middle of the valve flap body 31 bulges towards the side away from the valve seat 2, and a second chamfer 312 is provided on the outer periphery of one end of the valve flap body 31 close to the valve seat 2. The second chamfer 312 is used to abut against the first chamfer 24 to close the check valve body 1. In this embodiment, cemented carbide is surfacing-welded at the first chamfer 24 and the second chamfer 312. A counterweight 313 is fixedly connected to the side of the valve flap body 31 away from the main body, and the counterweight 313 is located on the side of the valve flap body 31 away from the first fixing hole 1321. A regulating seat 19 is fixedly connected to the inner wall of the liquid outlet passage 128. The regulating seat 19 is located on the side of the valve flap body 31 away from the valve seat 2. There are two regulating seats 19, and the two regulating seats 19 are symmetrically distributed along the rotation axis of the valve flap body 31. A third chamfer 191 is provided at one end of the regulating seat 19 close to the valve flap body 31, and one end of the third chamfer 191 is flush with the inner wall of the liquid outlet passage 128.

[0044] Figure 1 Referring to Figure 1 and Figure 4

[0045] Figure 4 Referring to Figure 4 and Figure 5 ,a swash plate type check valve further includes an adjusting block 5. A sliding groove 192 is provided on the side of the regulating seat 19 away from the inner wall of the liquid outlet passage 128. The number of adjusting blocks 5 is the same as and corresponds to the number of regulating seats 19 one by one. The adjusting blocks 5 are slidably embedded in the sliding grooves 192. The sliding direction of the adjusting blocks 5 is parallel to the axis direction of the valve body 12. The side wall of the adjusting block 5 is in contact with the groove wall of the sliding groove 192. The surface of the side of the adjusting block 5 away from the bottom of the sliding groove 192 is flush with the surface of the side of the regulating seat 19 away from the inner wall of the liquid outlet passage 128. A guiding groove 193 is provided at the bottom of the sliding groove 192. A guiding block 51 is fixedly connected to the adjusting block 5. The guiding block 51 is slidably embedded in the guiding groove 193. The side wall of the guiding block 51 is in contact with the groove wall of the guiding groove 193. In this embodiment, the guiding block 51 is a dovetail block.

[0045] Figure 4 Referring to Figure 4 and Figure 5 ,a swash plate type check valve further includes an adjusting assembly 6. The adjusting assembly 6 includes a lead screw 61. The number of lead screws 61 is the same as and corresponds to the number of adjusting blocks 5 one by one. The lead screws 61 are rotatably embedded in the guiding grooves 193. The rotation axis of the lead screws 61 is parallel to the sliding direction of the adjusting blocks 5. The lead screws 61 are threadedly connected to the guiding blocks 51., the adjusting assembly 6 further includes a transmission member 62 and a driving rod 63. The adjusting seat 19 is provided with a receiving groove 194, and the receiving groove 194 is located on the side of the guiding groove 193 away from the valve flap body 31. One end of the lead screw 61 passes through the wall of the guiding groove 193 and extends into the receiving groove 194. One end of the adjusting seat 19 away from the valve flap body 31 is fixedly connected with a connecting rod 110, and both ends of the connecting rod 110 are respectively fixedly connected to the two adjusting seats 19. A fixed seat 1211 is fixedly connected to the outer wall of the valve body 12, and the axis of the fixed seat 1211 is parallel to the rotation axis of the valve flap body 31. A second communication hole 111 is provided on the wall of the receiving groove 194, and the axis of the second communication hole 111 coincides with the axis of the fixed seat 1211. The second communication hole 111 communicates the two receiving grooves 194. A third communication hole 112 is provided on the wall of the receiving groove 194 close to the fixed seat 1211, and the axis of the third communication hole 112 coincides with the axis of the fixed seat 1211. The third communication hole 112 sequentially penetrates through the adjusting seat 19, the valve body 12 and the fixed seat 1211 along the axis of the third communication hole 112, and the third communication hole 112 communicates with the outside. The driving rod 63 is coaxially and rotatably embedded in the second communication hole 111 and the third communication hole 112, and the driving rod 63 is used to drive the lead screw 61 to rotate. The transmission member 62 is embedded in the receiving groove 194. The number of the transmission members 62 is the same as the number of the receiving grooves 194 and they correspond one by one. The transmission member 62 includes a worm gear 621 and a worm 622. The worm gear 621 is coaxially and fixedly connected to the outer circumference of the lead screw 61, and the worm 622 is coaxially and fixedly connected to the outer circumference of the driving rod 63. The worm 622 meshes with the worm gear 621.

[0046] Refer to Figure 4 , the adjusting assembly 6 further includes an indicating disk 64. The indicating disk 64 is coaxially and fixedly connected to the outer circumference of the driving rod 63. A groove 12111 is provided at one end of the fixed seat 1211 away from the valve body 12. The indicating disk 64 is embedded in the groove 12111. Scale lines 641 are provided on one side surface of the indicating disk 64 away from the bottom of the groove 12111. An indicating arrow 124 is provided at one end of the fixed seat 1211 away from the valve body 12, and the indicating arrow 124 is used to align with the scale lines 641.

[0047] Refer to Figure 3 and Figure 4, a swash plate type check valve further includes a damper 7. The number of dampers 7 is the same as and corresponds one-to-one with the number of adjusting seats 19. The damper 7 is embedded in the chute 192, and the damper 7 is located on the side of the chute 192 close to the valve flap body 31. The valve flap assembly 3 further includes a connecting rod 32 and a slider 33. The number of connecting rods 32 and sliders 33 is the same as and corresponds one-to-one with the number of adjusting blocks 5. The slider 33 is slidably embedded in the chute 192. The sliding direction of the slider 33 is parallel to the sliding direction of the adjusting block 5. The two ends of the slider 33 along the sliding direction of the slider 33 are respectively used to abut against the damper 7 and the adjusting block 5. The two ends of the connecting rod 32 are respectively hinged to the counterweight block 313 and the slider 33. The hinge axes of the connecting rod 32 with the counterweight block 313 and the slider 33 are parallel to the rotation axis of the valve flap body 31.

[0048] Referring to Figure 1 and Figure 6 , a swash plate type check valve further includes a prompting assembly 9. The prompting assembly 9 includes an impeller 91 and a rotating shaft 92. A rotating groove 137 is provided on the inner wall of the liquid inlet passage 136 close to the valve body 12. The rotating groove 137 is located on the side of the liquid inlet passage 136 away from the pin shaft 34. The rotating shaft 92 is rotatably embedded in the rotating groove 137. The rotation axis of the rotating shaft 92 is parallel to the rotation axis of the valve flap body 31. The impeller 91 is coaxially and fixedly connected to the outer periphery of the rotating shaft 92. The fan blades of the impeller 91 extend out of the rotating groove 137.

[0049] Referring to Figure 7 and Figure 8 , a prompting seat 138 is fixedly connected to the outer wall of the valve cover 13. The prompting seat 138 is located on the side of the valve cover 13 close to the second connection hole 1322. The prompting seat 138 is provided with a cavity 1381. One end of the rotating shaft 92 extends into the cavity 1381. The prompting assembly 9 further includes a turntable 93, a pawl 94, a first reset member 95 and a ratchet 96. The turntable 93 is coaxially and fixedly connected to the outer periphery of the rotating shaft 92. The turntable 93 is located in the cavity 1381. The ratchet 96 is rotatably embedded in the cavity 1381. The rotation axis of the ratchet 96 coincides with the axis of the turntable 93. One end of the pawl 94 is rotatably connected to the turntable 93. The rotation axis of the pawl 94 is parallel to and does not coincide with the axis of the turntable 93. The other end of the pawl 94 is used for embedding into the card slot of the ratchet 96. The first reset member 95 is connected between the pawl 94 and the turntable 93. The first reset member 95 enables the pawl 94 to be embedded into the inner card slot of the ratchet 96. In this embodiment, the first reset member 95 is a spring piece. One end of the first reset member 95 is rotatably connected to the turntable 93, and the other end of the first reset member 95 abuts against the pawl 94.

[0050] Referring to Figure 8, the prompting component 9 further includes a gear 97, a rack 98, a second reset member 99, a contact switch 910, and an indicating lamp 911. The gear 97 is coaxially and fixedly connected to the outer periphery of the ratchet wheel 96. A first embedding groove 1382 is provided on the side wall of the cavity 1381 away from the valve body 12. One end of the rack 98 is slidably embedded in the first embedding groove 1382. The sliding direction of the rack 98 is parallel to the axis direction of the valve cover 13. The rack 98 is located on the side of the gear 97 close to the axis of the valve cover 13, and the rack 98 meshes with the gear 97. The indicating lamp 911 is fixedly connected to the side of the prompting seat 138 away from the valve cover 13. The contact switch 910 is fixedly connected to the bottom of the first embedding groove 1382. The contact switch 910 is electrically connected to the indicating lamp 911, and the contact switch 910 is used for the rack 98 to abut against. The second reset member 99 is connected between the rack 98 and the prompting seat 138. The second reset member 99 makes the rack 98 have a tendency to abut against the contact switch 910. In this embodiment, the second reset member 99 is a spring. One end of the second reset member 99 is connected to the end of the rack 98 away from the first embedding groove 1382, and the other end of the second reset member 99 is connected to the side wall of the cavity 1381 away from the first embedding groove 1382.

[0051] The implementation principle of a swash plate type check valve according to an embodiment of the present application is as follows: During assembly, a sealing ring 4 is embedded in the sealing groove 23 on the side of the valve seat 2 away from the third embedding groove 22. One end of the valve seat 2 is embedded in the second installation groove 121. The sealing ring 4 abuts against the bottom of the second installation groove 121. The screw 8 passes through the third connection hole 21 and is threadedly connected to the third fixing hole 123. The head of the screw 8 is embedded in the third embedding groove 22 to realize the fixed connection between the valve seat 2 and the valve body 12. Another sealing ring 4 is embedded in another sealing groove 23. The other end of the valve seat 2 is embedded in the first installation groove 131. The sealing ring 4 abuts against the bottom of the first installation groove 131. Rotate the valve cover 13 so that the first fixing hole 1321 is aligned with the first connection hole 1221 and the second fixing hole 1222 is aligned with the second connection hole 1322. The first stud 14 passes through the first connection hole 1221 and is threadedly connected to the first fixing hole 1321. The first stud 14 passes through the second connection hole 1322 and is threadedly connected to the second fixing hole 1222. The first nut 15 is threadedly connected to the first stud 14, and the first nut 15 abuts against one side surface of the first fixing ring 132 away from the second fixing ring 122 or one side surface of the second fixing ring 122 away from the first fixing ring 132. The valve flap body 31 is embedded in the liquid outlet channel 128. The bearing 35 is embedded in the rotation hole 3111. The connecting column 341 passes through the first communication hole 1210 and is embedded in the bearing 35. The convex column 161 is embedded in the first communication hole 1210. Align the fourth connection hole 162 with the fourth fixing hole 1291. The second stud 17 passes through the fourth connection hole 162 and is threadedly connected to the fourth fixing hole 1291. The second nut 18 is threadedly connected to the second stud 17, and the fourth nut abuts against one side surface of the end cover 16 away from the rotating seat 129.

[0052] During use, rotate the drive rod 63 to drive the worm 622 to rotate. The worm 622 meshes with the worm wheel 621 to drive the lead screw 61 to rotate. The lead screw 61 is threadedly connected to the guide block 51 to drive the adjustment block 5 to slide and the indicating disk 64 to rotate, so that the required graduation line 641 corresponds to the indicating arrow 124.

[0053] The medium enters from one side of the liquid inlet channel 136. The medium pushes the valve flap body 31 to rotate, drives the connecting rod 32 to drive the slider 33 to slide. The slider 33 abuts against the adjustment block 5, and the valve flap body 31 is opened to the maximum rotation angle. When the medium stops entering from one side of the liquid inlet channel 136, the counterweight 313 and the valve flap body 31 rotate under the action of gravity, drive the connecting rod 32 to drive the slider 33 to slide, and the slider 33 abuts against the damper 7, so that the valve flap body 31 slowly approaches the valve seat 2, and the first chamfer 24 and the second chamfer 312 abut against each other to close the check valve body 1.

[0054] When the valve flap body 31 is not in tight contact with the valve seat 2, the medium on one side of the liquid outlet channel 128 enters the liquid inlet channel 136 through the gap between the valve flap body 31 and the valve seat 2. The medium impacts the impeller 91 to drive the impeller 91 to rotate, drives the rotating shaft 92 to rotate, drives the turntable 93 to rotate. The pawl 94 is embedded in the card slot of the ratchet 96 to drive the ratchet 96 to rotate, drives the gear 97 to rotate. The gear 97 meshes with the rack 98 to drive the rack 98 to slide, so that the rack 98 disengages from the contact switch 910, the circuit of the contact switch 910 and the indicator light 911 is disconnected, and the indicator light 911 goes out, prompting the staff to repair the check valve body 1.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A tilting disc check valve, characterized in that: The invention comprises a check valve body (1), a valve seat (2), a valve flap body (31) and an adjusting block (5); the check valve body (1) is provided with a mounting cavity (11); the valve seat (2) is embedded in the mounting cavity (11); the valve flap body (31) is rotatably embedded in the mounting cavity (11); the rotation axis of the valve flap body (31) is perpendicular to the axis of the check valve body (1); the valve flap body (31) is used to abut against the valve seat (2) to achieve the closure of the check valve body (1); the adjusting block (5) is slidably embedded in the mounting cavity (11); the sliding direction of the adjusting block (5) is parallel to the axis of the check valve body (1); the adjusting block (5) is located on a side of the valve flap body (31) away from the valve seat (2); and the adjusting block (5) is used to abut against one end of the valve flap body (31) away from the valve seat (2).

2. The tilting disc check valve according to claim 1, characterized in that: The check valve body (1) comprises a valve body (12), a valve cover (13), a first stud (14) and a first nut (15); the valve cover (13) and the valve body (12) are formed with inclined surfaces respectively; the outer periphery of the valve cover (13) close to one end of the inclined surface is connected to a first fixing ring (132); the outer periphery of the valve body (12) close to one end of the inclined surface is connected to a second fixing ring (122); the first fixing ring (132) is provided with a plurality of first fixing holes (1321); the plurality of first fixing holes (1321) are circumferentially spaced around an axis of the first fixing ring (132); the second fixing ring (122) is provided with first connecting holes (1221); the number of the first connecting holes (1221) is the same as the number of the first fixing holes (1321) and corresponds to each other; the second fixing ring (122) is provided with a plurality of second fixing holes (1222); the plurality of second fixing holes (1222) are circumferentially spaced around an axis of the second fixing ring (122) The first fixing ring (132) is provided with a second connection hole (1322); the number of the second connection holes (1322) is the same as the number of the second fixing holes (1222) and corresponds to each other; the number of the first studs (14) and the first nuts (15) is the same as the sum of the number of the first connection holes (1221) and the second connection holes (1322) and corresponds to each other; the first studs (14) pass through the first connection holes (1221) and are threadedly connected to the first fixing holes (1321) or pass through the second connection holes (1322) and are threadedly connected to the second fixing holes (1222); the first nut (15) is threadedly connected to the first studs (14); the first nut (15) abuts against a side of the first fixing ring (132) away from the second fixing ring (122) or a side of the second fixing ring (122) away from the first fixing ring (132); the valve cover (13), the valve disc body (31) and the adjustment block (5) are located in the valve body (12).

3. The tilting disc check valve according to claim 2, characterized in that: A second mounting groove (121) is provided at one end of the valve body (12) close to the valve cover (13); one end of the valve seat (2) abuts against the bottom of the second mounting groove (121); a first mounting groove (131) is provided at one end of the valve cover (13) close to the valve body (12); and the other end of the valve seat (2) is used to abut against the bottom of the first mounting groove (131).

4. The tilting disc check valve according to claim 3, characterized in that: It also comprises a screw (8); the valve seat (2) is provided with a third connecting hole (21); the bottom of the second mounting groove (121) is provided with a third fixing hole (123); the screw (8) passes through the third connecting hole (21) and is threadedly connected to the third fixing hole (123); a third embedding groove (22) is provided at the hole wall of the third connecting hole (21) at one end away from the bottom of the second mounting groove (121); the third embedding groove (22) is used for the head of the screw (8) to be embedded.

5. The tilting disc check valve according to claim 3, characterized in that: It also includes a sealing ring (4); sealing grooves (23) are respectively provided at both ends of the valve seat (2); the number of the sealing rings (4) is the same as the number of the sealing grooves (23) and corresponds one to one; the sealing ring (4) is embedded in the sealing groove (23); and one end of the sealing ring (4) away from the bottom of the sealing groove (23) is pressed against the bottom of the first installation groove (131) or the second installation groove (121).

6. The tilting disc check valve according to claim 1, characterized in that: The valve also comprises an adjustment assembly (6); the adjustment assembly (6) comprises a screw rod (61), a transmission component (62) and a drive rod (63); an adjustment seat (19) is connected to the wall of the installation cavity (11); the screw rod (61) is rotatably connected to the adjustment seat (19); the rotation axis of the screw rod (61) is parallel to the sliding direction of the adjustment block (5); the screw rod (61) is threadedly connected to the adjustment block (5); the drive rod (63) is rotatably connected to the check valve body (1); the rotation axis of the drive rod (63) is perpendicular to the rotation axis of the screw rod (61); the drive rod (63) is used to drive the screw rod (61) to rotate; one end of the drive rod (63) penetrates the wall of the installation cavity (11) and then extends out of the check valve body (1); the transmission component (62) is connected between the drive rod (63) and the screw rod (61).

7. The tilting disc check valve according to claim 6, characterized in that: The transmission component (62) comprises a worm wheel (621) and a worm (622); the worm wheel (621) is coaxially connected to the lead screw (61); the worm (622) is coaxially connected to the drive rod (63); and the worm (622) is meshed with the worm wheel (621).

8. The tilting disc check valve according to claim 6, characterized in that: The adjustment assembly (6) further comprises an indicator disk (64); the indicator disk (64) is coaxially connected to the outer periphery of the driving rod (63); a scale line (641) is provided on a side of the indicator disk (64) away from the check valve body (1); an indicator arrow (124) is provided on the outer wall of the check valve body (1); the indicator arrow (124) is used to align with the scale line (641).

9. The tilting disc check valve according to claim 6, characterized in that: The valve body (33) further comprises a damper (7), a connecting rod (32) and a slider (33); the damper (7) is connected to the adjustment seat (19); the damper (7) is located on a side of the adjustment block (5) close to the valve seat (2); the slider (33) is slidably connected to the adjustment seat (19); the sliding direction of the slider (33) is parallel to the sliding direction of the adjustment block (5); the two ends of the slider (33) along the sliding direction of the slider (33) are respectively used to abut against the damper (7) and the adjustment block (5); and the two ends of the connecting rod (32) are respectively hinged to the valve disc body (31) and the slider (33).

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