Valve group with flow regulation function

Abstract

The utility model discloses a valve group with a flow regulating function, which relates to the technical field of valves and comprises a main valve and a regulating valve, the main valve is provided with a first circulation channel, and the first circulation channel can be completely opened or closed; the adjusting valve comprises a rotary opening and closing mechanism, the adjusting valve is connected with the main valve, the rotary opening and closing mechanism comprises a first driving device, a guide disc and a plurality of valve plates, the guide disc is provided with a plurality of first guide holes, each valve plate is movably connected with the corresponding first guide hole, and the first ends of all the valve plates can be connected with the first driving device; the second ends of all the valve plates can be sequentially and mutually connected in a sliding mode to form a ring shape, the second ends of all the valve plates can define a circulation opening, the first driving device can drive each valve plate to slide along the corresponding first guide hole and can drive the valve plate to slide relative to the two adjacent valve plates, and the circulation opening communicates with the first circulation channel. The multiple valve plates can adjust the size of the circulation opening by sliding along the first guide holes. And the service life of the valve group can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve group with a flow regulating function. Background Art

[0002] The flow regulation function of the valve can help pipelines and other systems meet various requirements, such as flow stability, coordination of pipeline systems, etc. Among them, the flow regulation valves under ash unloading conditions in the steel industry mostly adopt hemispherical valves, such as the intelligent regulating ball valve provided by Chinese patent CN201320394491.3, which includes a ball, a valve stem and a valve seat. The ball and the valve stem are both set on the valve seat. The ball is fixedly connected to the valve stem, and the valve stem can drive the ball to rotate around the axis of the valve stem. When the ball valve is closed, the convex surface of the ball can completely seal the flow channel inlet of the valve seat; the valve can be opened and the flow can be regulated by driving the ball to rotate around the axis of the valve stem through the valve stem. When the ball valve is opened, as the rotation angle of the ball increases, the flow channel area also increases, and the flow will increase accordingly. When the ball valve is in a semi-open state during operation (except when the ball valve is fully opened), the sealing surface (convex surface of the ball) of the ball will be continuously washed by the medium or solid particles, causing the convex surface of the ball to be unable to seal the flow channel inlet of the valve seat. At this time, the ball valve cannot continue to be used and the service life of the ball valve is short. Utility Model Content

[0003] The utility model aims to provide a valve group with a flow regulating function to solve the problems existing in the above-mentioned prior art and to increase the service life of the valve group.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a valve group with flow regulation function, including a main valve and a regulating valve, wherein:

[0006] The main valve has a first flow passage, and the main valve can fully open or fully close the first flow passage;

[0007] The regulating valve includes a rotating opening and closing mechanism, which is connected to the main valve. The rotating opening and closing mechanism includes a first driving device, a guide disk and a plurality of valve plates. The guide disk is provided with a plurality of first guide holes, and each of the valve plates is movably connected to one of the first guide holes. The first ends of all the valve plates can be connected to the first driving device, and the second ends of all the valve plates can be slidably connected to each other in sequence to form a ring, and the second ends of all the valve plates can form a flow port. The first driving device can drive each valve plate to slide along the corresponding first guide hole, and the first driving device can drive each valve plate to slide relative to two adjacent valve plates. The flow port is connected to the first flow channel, and the plurality of valve plates can adjust the size of the flow port by sliding along the first guide hole.

[0008] Preferably, it also includes a first connecting rod, a second connecting rod and a driving disk, the two ends of the first connecting rod are rotatably connected to the output end of the first driving device and the first end of the second connecting rod respectively, the second end of the second connecting rod is rotatably connected to one side of the driving disk, all valve plates are arranged on the other side of the driving disk and are movably connected to the driving disk, the first driving device can move in a direction perpendicular to the center line of the driving disk, and the first driving device can drive the driving disk to rotate around the center line of the driving disk through the first connecting rod and the second connecting rod, the driving disk can drive each of the valve plates to slide along the corresponding first guide hole, and the driving disk can drive each of the valve plates to slide relative to two adjacent valve plates.

[0009] Preferably, guide grooves and guide strips are respectively provided on both sides of the second end of each valve plate, and the guide groove of each valve plate can be slidably connected to the guide strip of an adjacent valve plate, and the guide strip of each valve plate can be slidably connected to the guide groove of another adjacent valve plate.

[0010] Preferably, it also includes an adjusting shell, the adjusting shell has a second circulation channel, the adjusting shell is sealed and connected to the main valve, and the second circulation channel is communicated with the first circulation channel; all the valve plates, the guide disk and the driving disk are arranged in the adjusting shell, and the driving disk is rotatably connected to the inner wall of the adjusting shell; the driving disk has a plurality of second guide holes, each of the valve plates is movably connected to one of the second guide holes, and the driving disk can drive each of the valve plates to slide along the corresponding second guide hole.

[0011] Preferably, it further comprises at least three guide components, all of which are arranged between the outer side wall of the driving disk and the inner side wall of the adjusting shell, and each of the guide components can be rollingly connected to the outer side wall of the driving disk.

[0012] Preferably, the first driving device includes a supporting tube, a first screw rod, an adjusting block and a supporting frame, the first end of the supporting tube is fixed and sealedly connected to the adjusting shell, the first end of the first screw rod is sleeved in the supporting tube and rotatably and sealedly connected to the supporting tube, the first end of the first screw rod can pass through the supporting tube and extend into the adjusting shell, and the first end of the first screw rod is rotatably connected to an end of the first connecting rod away from the second connecting rod, the adjusting block is threadedly connected to the second end of the first screw rod, the supporting frame is fixedly connected to the supporting tube or the adjusting shell, and the adjusting block and the supporting frame form a rotating connection around the axis of the first screw rod.

[0013] Preferably, there are six valve plates, the second end of each valve plate is wedge-shaped, and the flow opening is a regular hexagon.

[0014] Preferably, the support frame includes a support plate and a plurality of second screw rods, two ends of each of the second screw rods are respectively fixedly connected to the support plate and the support tube, and the adjustment block and the support plate form a rotation connection around the axis of the first screw rod; the first driving device also includes at least one limiting component, which is fixedly connected to the first screw rod, and a plurality of second screw rods are arranged on the outer periphery of the first screw rod, and at least two second screw rods are arranged on the side of each limiting component away from the first screw rod, and each second screw rod can limit the corresponding limiting component to rotate clockwise or counterclockwise around the axis of the first screw rod.

[0015] Preferably, it also includes a first sealing component and a second sealing component, the first sealing component is arranged between the first end of the valve plate and the inner end wall of the first end of the regulating housing, and the first sealing component is fixedly connected to the regulating housing; the second sealing component is arranged between the second end of the valve plate and the inner end wall of the second end of the regulating housing, and the second sealing component is fixedly connected to the regulating housing, and the first sealing component and the second sealing component can make the medium entering from the inlet of the regulating housing flow to the outlet of the regulating housing only through the flow port.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The utility model provides a valve group with a flow regulation function, comprising a main valve and a regulating valve, wherein: the main valve has a first circulation channel, and the main valve can fully open or fully close the first circulation channel; the regulating valve comprises a rotating opening and closing mechanism, the regulating valve is connected to the main valve, the rotating opening and closing mechanism comprises a first driving device, a guide disk and a plurality of valve plates, the guide disk is provided with a plurality of first guide holes, each valve plate is movably connected to a first guide hole, the first ends of all valve plates can be connected to the first driving device, the second ends of all valve plates can be slidably connected to each other in sequence to form a ring shape, and the second ends of all valve plates can form a circulation port, the first driving device can drive each valve plate to slide along the corresponding first guide hole, and the first driving device can drive each valve plate to slide relative to two adjacent valve plates, the circulation port is connected to the first circulation channel, and the plurality of valve plates can adjust the size of the circulation port by sliding along the first guide hole.

[0018] The valve group with flow regulation function provided by the utility model controls the opening and closing of the valve through the main valve, and when the main valve is fully opened, the flow of the valve is adjusted by the regulating valve. The valve group with flow regulation function provided by the utility model can independently control the opening and closing of the valve and the flow regulation of the valve. When the main valve is fully opened, the scouring of the medium or solid particles will scour the valve plate of the regulating valve, but will not scour the sealing surface of the main valve used to close the valve group, thereby avoiding the main valve from being unable to close the first circulation channel due to the scouring of the medium or solid particles, and further avoiding the main valve from being unable to close the valve group due to the scouring of the medium or solid particles; after the valve plate is eroded to a certain extent, the size of the circulation port can be appropriately reduced to ensure the stability of the flow, so that the valve group has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a valve group with flow regulating function provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of the guide plate provided by the utility model;

[0022] Figure 3 A schematic diagram of a structure in which a plurality of valve plates provided by the utility model form a flow opening;

[0023] Figure 4 A schematic diagram of the structure of the drive disk provided by the utility model;

[0024] Figure 5 A schematic diagram of the structure of the first cover provided by the utility model;

[0025] Figure 6 A schematic diagram of the structure of the second cover provided by the utility model;

[0026] Figure 7 A schematic diagram of the structure of the valve plate provided by the utility model;

[0027] Figure 8 A schematic diagram of the structure of a single drive disk provided by the utility model;

[0028] Fig. 9 A schematic diagram of the structure of the first packing gland and the screw support provided by the utility model;

[0029] Fig.10 A schematic diagram of the structure of the first driving device provided by the utility model;

[0030] In the figure: 100, valve group with flow regulating function; 1, first screw rod; 2, first cover body; 201, support cylinder; 202, first mounting hole; 3, guide component; 4, guide plate; 401, first guide hole; 5, drive plate; 501, second guide hole; 6, valve plate; 601, guide groove; 602, guide strip; 603, plate body; 604, first protrusion; 605, second protrusion; 7, second cover body; 701, flange; 702, sealing groove; 8, first bearing; 9, sealing support ring; 10, fixed shaft; 11, bolt; 12, first connecting rod; 13, second bearing; 14, adjusting hand wheel; 15, third bearing; 1 6. Support plate; 17. Adjustment block; 18. Limit component; 19. First packing gland; 20. First sealing component; 21. Second sealing component; 22. Pin shaft; 23. Hand wheel nut; 24. Second driving device; 25. Transmission shaft; 26. Transmission shaft bracket; 27. Second packing gland; 28. Packing; 29. ​​Main valve housing; 30. Thrust pad; 31. Ball; 32. Connecting component; 33. Sealing assembly; 34. Positioning shaft; 35. Positioning shaft rear cover; 36. First circulation channel; 37. Circulation port; 38. Second circulation channel; 39. Second screw rod; 40. Limit nut; 41. Screw rod support; 42. Spring hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model aims to provide a valve group with a flow regulating function to solve the problems existing in the above-mentioned prior art and to increase the service life of the valve group.

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1-10 As shown, the utility model provides a valve group 100 with a flow regulation function, including a main valve and a regulating valve, wherein: the main valve has a first circulation channel 36, and the main valve can fully open or fully close the first circulation channel 36; the regulating valve includes a rotating opening and closing mechanism, the regulating valve is connected to the main valve, the rotating opening and closing mechanism includes a first driving device, a guide disk 4 and a plurality of valve plates 6, the guide disk 4 is provided with a plurality of first guide holes 401, each valve plate 6 is movably connected to a first guide hole 401, the first ends of all valve plates 6 can be connected to the first driving device, the second ends of all valve plates 6 can be slidably connected to each other in sequence to form a ring, and the second ends of all valve plates 6 can enclose a circulation port 37, the first driving device can drive each valve plate 6 to slide along the corresponding first guide hole 401, and the first driving device can drive each valve plate 6 to slide relative to two adjacent valve plates 6, the circulation port 37 is connected to the first circulation channel 36, and the plurality of valve plates 6 can adjust the size of the circulation port 37 by sliding along the first guide hole 401. The valve group 100 with flow regulation function provided by the utility model controls the opening and closing of the valve through the main valve, and when the main valve is fully opened, the flow of the valve is adjusted by the regulating valve. The valve group 100 with flow regulation function provided by the utility model can independently control the opening and closing of the valve and the flow regulation of the valve. When the main valve is fully opened, the scouring of the medium or solid particles will scour the valve plate 6 of the regulating valve, but will not scour the main valve sealing surface of the hemispherical valve and other valves, thereby avoiding the main valve sealing surface from being unable to close the first circulation channel 36 due to the scouring of the medium or solid particles, thereby avoiding the main valve from being unable to close the valve group due to the scouring of the medium or solid particles; after the valve plate 6 is eroded to a certain extent, the size of the circulation port 37 can be appropriately reduced to ensure the stability of the flow, so that the valve group has a longer service life.

[0035] In this embodiment, it also includes a first connecting rod 12, a second connecting rod and a driving disk 5. The two ends of the first connecting rod 12 are rotatably connected to the output end of the first driving device and the first end of the second connecting rod respectively, and the second end of the second connecting rod is rotatably connected to one side of the driving disk 5. All valve plates 6 are arranged on the other side of the driving disk 5 and are movably connected to the driving disk 5. The first driving device can move in a direction perpendicular to the center line of the driving disk 5, and the first driving device can drive the driving disk 5 to rotate around the center line of the driving disk 5 through the first connecting rod 12 and the second connecting rod. The driving disk 5 can drive each valve plate 6 to slide along the corresponding first guide hole 401, and the driving disk 5 can drive each valve plate 6 to slide relative to two adjacent valve plates 6.

[0036] In this embodiment, a guide groove 601 and a guide strip 602 are respectively provided on both sides of the second end of each valve plate 6, and the guide groove 601 of each valve plate 6 can be slidably connected with the guide strip 602 of an adjacent valve plate 6, and the guide strip 602 of each valve plate 6 can be slidably connected with the guide groove 601 of another adjacent valve plate 6.

[0037] In this embodiment, it also includes an adjusting shell, which has a second circulation channel 38. The adjusting shell is sealed and connected to the main valve, and the second circulation channel 38 is connected to the first circulation channel 36; all valve plates 6, guide plates 4 and drive plates 5 are arranged in the adjusting shell, and the guide plate 4 is rotatably connected to the inner wall of the adjusting shell; the drive plate 5 has a plurality of second guide holes 501, each valve plate 6 is movably connected to a second guide hole 501, and the drive plate 5 can drive each valve plate 6 to slide along the corresponding second guide hole 501.

[0038] As a preferred embodiment, the regulating housing includes a first cover body 2 and a second cover body 7 which are fixed and sealed in sequence, a sealing ring is arranged between the first cover body 2 and the second cover body 7, and the sealing ring is sleeved in the sealing groove 702 of the second cover body 7 to enclose a closed cavity. The first cover body 2 is fixed and sealed to the main valve housing 29. A plurality of first mounting holes 202 are arranged on the end wall of the first cover body 2, and the first mounting holes 202 are preferably six, and the plurality of first mounting holes 202 are evenly distributed along the circumference of the first cover body 2; the guide plate 4 is fixedly connected to the first cover body 2 by a bolt 11 passing through the guide plate 4 and being threadedly connected to the first mounting holes 202. A flange 701 is arranged at one end of the second cover body 7 away from the first cover body 2 for connecting to an external pipeline.

[0039] As a preferred embodiment, the valve plate 6 includes a plate body 603 and a first protrusion 604 and a second protrusion 605 protruding from two side surfaces of the plate body 603 in the thickness direction. The first protrusion 604 is provided with a first bearing 8 on one end away from the plate body 603, and the second protrusion 605 is provided with a second bearing 13 on one end away from the plate body 603. The first bearing 8 is arranged in the first guide hole 401 and can slide along the path designed by the first guide hole 401. The second bearing 13 is arranged in the second guide hole 501 and can slide along the path designed by the second guide hole 501.

[0040] In this embodiment, at least three guide components 3 are further included. All guide components 3 are arranged between the outer wall of the driving disk 5 and the inner wall of the adjusting shell. Each guide component 3 can be rollingly connected to the outer wall of the driving disk 5.

[0041] As a preferred embodiment, this embodiment further includes at least three fixed shafts 10, the guide component 3 is a guide wheel, and the fixed shafts 10 and the guide components 3 are preferably six. The first end of each fixed shaft 10 is fixedly connected to the guide plate 4 or the adjustment housing, and the second end of each fixed shaft 10 is sleeved in the guide wheel and is rotationally connected to the guide wheel; the outer wall of the guide wheel is rollingly connected to the outer wall of the driving plate 5. The guide component 3 can radially limit the driving plate 5, and the driving plate 5 is rotationally connected to the inner wall of the adjustment housing through the guide component 3, which can reduce the friction between the driving plate 5 and the inner wall of the adjustment housing when the driving plate 5 rotates.

[0042] In this embodiment, the first driving device includes a support tube 201, a first screw rod 1, an adjusting block 17 and a support frame. The first end of the support tube 201 is fixed and sealed to the adjusting shell. The first end of the first screw rod 1 is sleeved in the support tube 201 and is rotatably and sealed to the support tube 201. The first end of the first screw rod 1 can pass through the support tube 201 and extend into the adjusting shell, and the first end of the first screw rod 1 is rotatably connected to an end of the first connecting rod 12 away from the second connecting rod; the adjusting block 17 is threadedly connected to the second end of the first screw rod 1, the support frame is fixedly connected to the support tube 201 or the adjusting shell, and the adjusting block 17 and the support frame form a rotating connection around the axis of the first screw rod 1. By rotating the adjusting block 17, the first screw rod 1 can be moved along its own axial direction, thereby driving the first connecting rod 12 and the second connecting rod to move, and then driving the driving disk 5 to rotate, so that the valve plate 6 moves toward the flow port 37 or away from the flow port 37, so as to adjust the size of the flow port 37; when the adjusting block 17 stops rotating, the first screw rod 1 stops moving, and the size of the adjustment port can be maintained, even if the valve is maintained at a specific opening.

[0043] In this embodiment, there are six valve plates 6, the second end of each valve plate 6 is wedge-shaped, and the flow port 37 is a regular hexagon. Specifically, each valve plate 6 has a first side surface and a second side surface, the first side surface and the second side surface extend in a direction away from the outer side wall of the regulating housing and intersect to form a wedge-shaped structure, and the first side surface and the second side surface are respectively provided with a guide groove 601 and a guide strip 602, and the angle between the guide groove 601 and the guide strip 602 is 60°.

[0044] In this embodiment, the support frame includes a support plate 16 and a plurality of second screw rods 39, the two ends of each second screw rod 39 are respectively fixedly connected to the support plate 16 and the support tube 201, and the adjustment block 17 and the support plate 16 form a rotation connection around the axis of the first screw rod 1; the first driving device also includes at least one limiting component 18, the limiting component 18 is fixedly connected to the first screw rod 1, and the plurality of second screw rods 39 are all arranged on the outer periphery of the first screw rod 1, and at least two second screw rods 39 are arranged on the side of each limiting component 18 away from the first screw rod 1, and each second screw rod 39 can limit the corresponding limiting component 18 to rotate clockwise or counterclockwise around the axis of the first screw rod 1.

[0045] As a preferred embodiment, there are two limiting components 18, and the limiting components 18 are fixedly connected to the limiting groove of the first screw rod 1 by screws. A plurality of second mounting holes are provided at one end of the support tube 201 close to the support plate 16, and the second mounting holes and the second screw rods 39 are preferably four, and each second screw rod 39 is threadedly connected to a second mounting hole. The length direction of the limiting component 18 is perpendicular to the length direction of the second screw rod 39, and the length of each limiting component 18 is greater than the distance between the corresponding two screw rods and the sum of the two diameters of the two screw rods. When the first screw rod 1 rotates, the two limiting components 18 respectively contact the two second screw rods 39 arranged diagonally, so that the first screw rod 1 cannot continue to rotate, thereby achieving limiting.

[0046] In this embodiment, the first drive device also includes a plurality of limiting nuts 40, and two limiting nuts 40 are connected to both ends of each second screw rod 39, and the lower end of each limiting nut 40 can contact with the side of the limiting component 18 close to the corresponding limiting nut 40. Specifically, when the limiting component 18 moves axially along the first screw rod 1 to the height where the limiting nut 40 is located, the lower end of each limiting nut 40 can contact with the side of the limiting component 18 close to the corresponding limiting nut 40, restricting its continued movement, thereby limiting the range of the first screw rod 1 that can be extended and retracted along its own axis. By adjusting the distance of the limiting nut 40 on the second screw rod 39, the range of the first screw rod 1 that can be extended and retracted along its own axis can be adjusted.

[0047] In this embodiment, a first sealing component 20 and a second sealing component 21 are also included. The first sealing component 20 is arranged between the first end of the valve plate 6 and the inner end wall of the first end of the regulating housing, and the first sealing component 20 is fixedly connected to the regulating housing; the second sealing component 21 is arranged between the second end of the valve plate 6 and the inner end wall of the second end of the regulating housing, and the second sealing component 21 is fixedly connected to the regulating housing. The first sealing component 20 and the second sealing component 21 can make the medium entering from the inlet of the regulating housing flow to the outlet of the regulating housing only through the flow port 37, and will not flow between the guide plate 4 and the inner side wall of the regulating housing, and the drive plate 5 and the inner side wall of the regulating housing. The first sealing component 20 and the second sealing component 21 are both tetrafluoro rings.

[0048] As a preferred embodiment, it also includes a sealing support ring 9 and at least two elastic components, the two ends of each elastic component are respectively abutted against the inner end wall of the second end of the regulating housing and one end of the sealing support ring 9, the other end of the sealing support ring 9 is abutted against the end of the second sealing component 21 away from the valve plate 6 under the action of the elastic component, the inner end wall of the sealing support ring 9 away from the second end of the regulating housing is provided with a mounting groove, the second sealing component 21 is embedded in the mounting groove, and the other end of the second sealing component 21 is abutted against the valve plate 6 under the action of the elastic component. The sealing support ring 9 provides support for the second sealing component 21; the elastic component presses the second sealing component 21 against the valve plate 6 by elastic force to ensure the sealing effect. The material of the sealing support ring 9 is preferably carbon steel. There are preferably six elastic components, which are evenly distributed along the circumference of the sealing support ring 9. The elastic component is preferably a spring. The spring is installed in the spring hole 42 of the inner end wall of the second end of the regulating housing.

[0049] As a preferred embodiment, the first connecting rod 12 is connected to the first screw rod 1 via a pin 22 .

[0050] As a preferred embodiment, a polytetrafluoroethylene layer is provided on the guide bar 602 and / or the guide groove 601 to achieve sealing and lubrication between the guide bar 602 and the guide groove 601 connected thereto.

[0051] As a preferred embodiment, it also includes an adjusting handwheel 14 and a handwheel nut 23. The first end of the adjusting handwheel 14 is connected to the adjusting block 17, and the two are preferably key-connected. The adjusting handwheel 14 can drive the adjusting block 17 to rotate; the adjusting block 17 and the adjusting handwheel 14 are both rotatably connected to the support plate 16; the pressing surface of the handwheel nut 23 is arranged at the end of the adjusting handwheel 14 away from the adjusting block 17, the handwheel nut 23 is threadedly connected to the adjusting block 17, and the pressing surface of the handwheel nut 23 can limit the movement of the adjusting handwheel 14 away from the adjusting block 17. Specifically, the outer sleeves of the adjusting handwheel 14 and the adjusting block 17 are provided with a third bearing 15, and the third bearing 15 is sleeved in the mounting hole of the support plate 16, so that the adjusting handwheel 14 and the adjusting block 17 are both rotatably connected to the support plate 16, and the friction can be reduced.

[0052] As a preferred embodiment, it also includes a first packing gland 19 and a screw support 41. The first packing gland 19 and the screw support 41 are arranged at one end of the support tube 201 close to the adjustment block 17. The first screw 1 can pass through the support plate 16, the first packing gland 19, the support tube 201, the adjustment housing and extend into the adjustment housing in sequence. The first packing gland 19, the screw support 41, the support tube 201 and the screw support 41 can enclose a first space. A packing 28 is arranged in the first space to achieve the sealing of the first screw 1 and the support tube 201. More preferably, the end of the packing gland 28 away from the first space is fixedly connected to the second screw 39; a first boss is arranged on the inner wall of the support tube 201, and a second boss is arranged at one end of the screw support 41 close to the first space. The end of the second boss away from the first space contacts with the end of the first boss close to the first space, so that the axial movement of the screw support 41 is limited.

[0053] As a preferred embodiment, one end of the first screw rod 1 close to the support tube 201 is a polished rod section, the outer wall of the polished rod section is slidably connected to the inner wall of the screw rod support 41, and the screw rod support 41 can guide and limit the first screw rod 1.

[0054] As a preferred embodiment, the guide plate 4 , the drive plate 5 , and the second circulation channel 38 are coaxially arranged, and the center line of the circulation port 37 is colinear with the axis of the second circulation channel 38 .

[0055] In this embodiment, the main valve includes a main valve housing 29, a second drive device 24, a transmission shaft 25, a transmission shaft bracket 26, a ball 31 and a main valve sealing component. The ball 31 is arranged in the main valve housing 29. The output end of the second drive device 24 is fixedly connected to one end of the transmission shaft 25. The main valve housing 29 is provided with an insertion port. The second end of the transmission shaft 25 can be inserted into the main valve housing 29 through the insertion port. The second end of the transmission shaft 25 is rotatably connected to the insertion port. The second end of the transmission shaft 25 is fixedly connected to the ball 31. The transmission shaft 25 is rotatably connected to the transmission shaft bracket 26. The transmission shaft bracket 26 and the insertion port can radially limit the transmission shaft 25. A main valve sealing component is arranged between the insertion port and the second end of the transmission shaft 25 to achieve the sealing of the main valve housing 29. The second drive device 24 can drive the transmission shaft 25 to rotate, thereby driving the ball 31 to rotate around the axis of the transmission shaft 25, thereby achieving the full opening and full closing of the main valve. The main valve housing 29 is fixedly and sealedly connected to the first cover 2.

[0056] As a preferred embodiment, the main valve sealing component includes a second packing gland 27 and a thrust pad 30, which are arranged between the inner wall of the extension port and the outer wall of the rotating shaft. The second packing gland 27, the thrust pad 30, the inner wall of the extension port and the outer wall of the rotating shaft can enclose a second space, and the second space is filled with a packing 28. The packing 28 is made of graphite. It should be noted that the second packing gland 27 and the thrust pad 30 can also be limited by a boss between the second packing gland 27 and the thrust pad 30 and the inner wall of the extension port, and the specific setting method is the same as that of the first boss and the second boss, which will not be repeated here.

[0057] As a preferred embodiment, a connecting component 32 is provided on the main valve housing 29, a sealing assembly 33 is provided on the inner wall of the connecting component 32, the connecting component 32 is used to communicate with an external pipeline, and the sealing assembly 33 is used to achieve sealing between the connecting component 32 and the external pipeline.

[0058] As a preferred embodiment, the main valve also includes a positioning shaft 34, the two ends of which are respectively rotatably connected to the main valve housing 29 and the end of the ball 31 away from the transmission shaft 25, and the positioning shaft 34 is coaxial with the transmission shaft 25. The positioning shaft 34 can position and support the ball 31 so that the ball 31 can rotate around the axis of the transmission shaft 25.

[0059] As a preferred embodiment, the main valve further includes a positioning shaft rear cover 35, which is fixed and sealed to the main valve housing 29, and is rotatably connected to the positioning shaft 34, and the positioning shaft 34 and the main valve housing 29 are rotatably connected through the positioning shaft rear cover 35. The positioning shaft rear cover 35 is used to seal the main valve housing 29 and support the positioning shaft 34.

[0060] The valve group provided by the utility model has a direction when in use, and the medium flows into from the inlet of the connecting component 32 and flows out from the second cover body 7, and the valve group is generally installed vertically, that is, the inlet of the connecting component 32 faces upward.

[0061] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A valve group with flow regulation function, characterized in that: It includes main valve and regulating valve, among which: The main valve has a first flow passage, and the main valve can fully open or fully close the first flow passage; The regulating valve includes a rotating opening and closing mechanism, which is connected to the main valve. The rotating opening and closing mechanism includes a first driving device, a guide disk and a plurality of valve plates. The guide disk is provided with a plurality of first guide holes, and each of the valve plates is movably connected to one of the first guide holes. The first ends of all the valve plates can be connected to the first driving device, and the second ends of all the valve plates can be slidably connected to each other in sequence to form a ring, and the second ends of all the valve plates can form a flow port. The first driving device can drive each valve plate to slide along the corresponding first guide hole, and the first driving device can drive each valve plate to slide relative to two adjacent valve plates. The flow port is connected to the first flow channel, and the plurality of valve plates can adjust the size of the flow port by sliding along the first guide hole.

2. The valve group with flow regulating function according to claim 1, characterized in that: It also includes a first connecting rod, a second connecting rod and a driving disk, wherein two ends of the first connecting rod are rotationally connected to the output end of the first driving device and the first end of the second connecting rod respectively, and the second end of the second connecting rod is rotationally connected to one side of the driving disk, and all valve plates are arranged on the other side of the driving disk and are movably connected to the driving disk, the first driving device can move in a direction perpendicular to the center line of the driving disk, and the first driving device can drive the driving disk to rotate around the center line of the driving disk through the first connecting rod and the second connecting rod, the driving disk can drive each of the valve plates to slide along the corresponding first guide hole, and the driving disk can drive each of the valve plates to slide relative to two adjacent valve plates.

3. The valve group with flow regulating function according to claim 1, characterized in that: A guide groove and a guide strip are respectively arranged on both sides of the second end of each valve plate, and the guide groove of each valve plate can be slidably connected to the guide strip of an adjacent valve plate, and the guide strip of each valve plate can be slidably connected to the guide groove of another adjacent valve plate.

4. The valve group with flow regulating function according to claim 2, characterized in that: It also includes an adjusting shell, the adjusting shell has a second circulation channel, the adjusting shell is sealed and connected to the main valve, and the second circulation channel is communicated with the first circulation channel; all the valve plates, the guide disk and the driving disk are arranged in the adjusting shell, and the driving disk is rotatably connected to the inner wall of the adjusting shell; the driving disk has a plurality of second guide holes, each of the valve plates is movably connected to one of the second guide holes, and the driving disk can drive each of the valve plates to slide along the corresponding second guide hole.

5. The valve group with flow regulating function according to claim 4, characterized in that: It also includes at least three guide components, all of which are arranged between the outer side wall of the driving disk and the inner side wall of the adjusting shell, and each of the guide components can be rollingly connected to the outer side wall of the driving disk.

6. The valve group with flow regulating function according to claim 4, characterized in that: The first driving device includes a supporting tube, a first screw rod, an adjusting block and a supporting frame, the first end of the supporting tube is fixed and sealedly connected to the adjusting shell, the first end of the first screw rod is sleeved in the supporting tube and rotatably and sealedly connected to the supporting tube, the first end of the first screw rod can pass through the supporting tube and extend into the adjusting shell, and the first end of the first screw rod is rotatably connected to an end of the first connecting rod away from the second connecting rod, the adjusting block is threadedly connected to the second end of the first screw rod, the supporting frame is fixedly connected to the supporting tube or the adjusting shell, and the adjusting block and the supporting frame form a rotating connection around the axis of the first screw rod.

7. The valve group with flow regulating function according to claim 1, characterized in that: There are six valve plates, the second end of each valve plate is wedge-shaped, and the flow port is a regular hexagon.

8. The valve group with flow regulating function according to claim 6, characterized in that: The support frame includes a support plate and multiple second screw rods, and the two ends of each second screw rod are fixedly connected to the support plate and the support tube respectively, and the adjustment block and the support plate form a rotation connection around the axis of the first screw rod; the first driving device also includes at least one limiting component, and the limiting component is fixedly connected to the first screw rod, and multiple second screw rods are all arranged on the outer periphery of the first screw rod, and at least two second screw rods are arranged on the side of each limiting component away from the first screw rod, and each second screw rod can limit the corresponding limiting component to rotate clockwise or counterclockwise around the axis of the first screw rod.

9. The valve group with flow regulating function according to claim 6, characterized in that: It also includes a first sealing component and a second sealing component, wherein the first sealing component is arranged between the first end of the valve plate and the inner end wall of the first end of the regulating housing, and the first sealing component is fixedly connected to the regulating housing; the second sealing component is arranged between the second end of the valve plate and the inner end wall of the second end of the regulating housing, and the second sealing component is fixedly connected to the regulating housing, and the first sealing component and the second sealing component can ensure that the medium entering from the inlet of the regulating housing can only flow to the outlet of the regulating housing through the flow port.

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