U-shaped ring metal sealing butterfly valve and manufacturing method thereof

Abstract

The invention relates to the technical field of sealing butterfly valve manufacturing, in particular to a U-shaped ring metal sealing butterfly valve and a manufacturing method thereof.The U-shaped ring metal sealing butterfly valve comprises a valve body, a butterfly plate is installed in the valve body, and a U-shaped ring metal valve seat ring is arranged between the valve body and the butterfly plate; the valve body is rotationally connected with a dish plate rotating shaft, and the dish plate rotating shaft is fixedly connected with the dish plate and used for driving the dish plate to be opened or closed; two sets of cleaning assemblies are arranged in the valve body, arranged on the two sides of the butterfly plate correspondingly and used for removing foreign matter on the two inner walls of the valve body. A driving mechanism is further arranged outside the valve body, drives the two cleaning assemblies to remove foreign matter on the two inner walls and drives the dish plate rotating shaft to rotate so that the dish plate can be opened or closed. The device can clean up foreign matters on the left inner wall and the right inner wall of the valve body, so that the cleanliness of the inner wall of a pipeline and the safety of a medium are ensured; sealing performance of the valve is effectively improved, and service life of the valve is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of sealing butterfly valve manufacturing, and in particular to a U-shaped ring metal sealing butterfly valve and a manufacturing method thereof. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. They mainly play the role of cutting off and throttling in pipelines. The butterfly valve opening and closing part is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0004] When installing a butterfly valve, foreign objects such as dirt and leaves may sometimes enter the inner wall of the valve body. These foreign objects are adsorbed on the inner wall of the valve body and the butterfly plate, which will breed bacteria and affect the cleanliness of the inner wall of the pipeline and the safety of the medium, and affect the sealing performance of the valve. Therefore, it is necessary to improve the sealing butterfly valve and its manufacturing method. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a U-ring metal sealed butterfly valve and a manufacturing method thereof, which can clean the foreign matter on the left inner wall and the right inner wall of the valve body, thereby ensuring the cleanliness of the inner wall of the pipeline and the safety of the medium; effectively improving the sealing performance of the valve and extending the service life of the valve.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a U-ring metal sealing butterfly valve, comprising: A valve body, wherein a disc plate is installed in the valve body, and a U-shaped metal valve seat ring is provided between the valve body and the disc plate; The valve body is rotatably connected to a disc plate rotating shaft, and the disc plate rotating shaft is fixedly connected to the disc plate for driving the disc plate to open or close; Two sets of cleaning components are arranged in the valve body, respectively placed on both sides of the disc plate, for removing foreign matter from the two inner walls of the valve body; A driving mechanism is also provided outside the valve body, and the driving mechanism drives two groups of cleaning components to remove foreign matter from the two inner walls, and drives the disc plate rotating shaft to rotate so that the disc plate is opened or closed.

[0007] Further, the cleaning assembly comprises a fifth bearing seat, a sixth bearing seat and a fixed seat, the inner wall of the valve body is fixedly connected with the fifth bearing seat, the sixth bearing seat and the fixed seat, a threaded rod is rotatably connected between the fixed seat and the sixth bearing seat, the outer wall of the threaded rod is threadedly connected with a sliding plate, one side of the sliding plate is fixedly connected with a first connecting strip, the first connecting strip is limitedly slidably connected in a second limited sliding groove provided on the fixed seat, and one side of the first connecting strip is fixedly connected with the first bearing seat; The sixth bearing seat is rotatably connected to a second rotating column, the second rotating column and the threaded rod are coaxial and fixedly connected to each other, and the outer wall of the second rotating column is fixedly connected to a third gear and a second bevel gear; The fifth bearing seat is rotatably connected to a first spline shaft in an upper limit position, an outer wall of the first spline shaft is slidably connected to a first spline sleeve in a limited position, and the first spline sleeve is rotatably connected in the first bearing seat in a limited position; The outer wall of the first spline shaft is fixedly connected with a second gear, and the second gear is meshed with the third gear; A plurality of cleaning mounting plates are distributed on the circumference of the outer wall of the first spline sleeve, and a cleaning head is fixedly connected to one side of the cleaning mounting plates away from the first spline sleeve. The cleaning head cooperates with the inner wall of the valve body to clean debris on the inner wall of the valve body.

[0008] Furthermore, the driving mechanism includes a first rotating mechanism for rotating the disc plate rotating shaft and a second rotating mechanism for rotating the two second rotating columns.

[0009] Further, the first rotating mechanism comprises a box body, the top of the valve body is fixedly connected to the box body, the inner wall of the cavity in the box body is rotatably connected to the second spline shaft, the outer wall of the second spline shaft is limitedly slidably connected to the fourth spline sleeve, the outer wall of the fourth spline sleeve has a plurality of spline strips distributed around the circumference, and the outer wall of the fourth spline sleeve is fixedly connected to the fourth gear; The inner wall of the cavity is fixedly connected with a seventh bearing seat, the inner part of the seventh bearing seat is limitedly rotatably connected with a third rotating column, the two sides of the third rotating column are respectively fixedly connected with a fifth gear and a third bevel gear, and the fourth gear is meshed with the fifth gear; The disc plate rotating shaft is fixedly connected to a fourth bevel gear at a position outside the valve body, and the third bevel gear and the fourth bevel gear are meshed with each other; A motor is fixedly mounted on the box body, and a power output end of the motor is connected to the second spline shaft.

[0010] Further, the second rotating mechanism comprises a third spline sleeve, the inner wall of the cavity is rotatably connected with the third spline sleeve in a limit position, the second spline shaft is located at the center of the third spline sleeve, and the second spline shaft and the third spline sleeve are not in contact with each other, the second spline shaft and the third spline sleeve are coaxial, and the outer wall of the third spline sleeve is fixedly connected with the first gear; The inner wall of the cavity is fixedly connected with a fourth bearing seat, the inner wall of the fourth bearing seat is limitedly rotatably connected with a second spline sleeve, the outer wall of the second spline sleeve is fixedly connected with a seventh gear, the second spline sleeve is coaxial with the third spline sleeve, and the fourth spline sleeve is located between the second spline sleeve and the third spline sleeve; The fourth spline shaft sleeve is provided with a left-right moving mechanism, and the spline strip can be limitedly slidably connected in the second spline shaft sleeve or the third spline shaft sleeve; Two second bearing seats are fixedly connected in the valve body, and first rotating columns are limitedly rotatably connected in the two second bearing seats, and fifth bevel gears and first bevel gears are fixedly connected to the top and bottom of the two first rotating columns, respectively, and the first bevel gears and the second bevel gears are meshed with each other; Two eighth bearing seats are fixedly connected in the cavity, and fourth rotating columns are limitedly connected to the two eighth bearing seats for rotation. The sixth gear and the sixth bevel gear are fixedly connected at both ends of the fourth rotating column, respectively. The tops of the two first rotating columns are fixedly connected with fifth bevel gears, and the fifth bevel gears are meshed with the sixth bevel gears. One of the sixth gears is meshed with the seventh gear, and the other sixth gear is meshed with the first gear.

[0011] Furthermore, the left and right moving mechanism includes a third bearing seat, the outer wall of the fourth spline sleeve is limited and rotatably connected to the third bearing seat, the inner wall of the cavity is fixedly connected to an electric telescopic rod, the third bearing seat is limited and slidably connected in a first limited sliding groove opened on the inner wall of the cavity, and the electric telescopic rod is fixedly connected to the third bearing seat.

[0012] Furthermore, a control box is fixedly installed on the top of the box body, and a battery and a control board are installed in the control box. The control board, the battery, the electric telescopic rod, and the motor are electrically connected.

[0013] Furthermore, the U-shaped ring metal valve seat ring includes a bottom and two support arms, the inner side opening angle of the support arm is 0 to 4 degrees larger than the outer side opening angle, so that the wall thickness of the U-shaped ring gradually increases from the end to the bottom; the disc plate is formed by conical bevel cutting, and the U-shaped ring metal valve seat ring and the disc plate are in contact to form an elliptical sealing surface, and a multi-position seal is formed between 86 and 94 degrees.

[0014] A method for manufacturing the above-mentioned U-ring metal sealing butterfly valve comprises: S1: The disc plate is formed by using a conical bevel cutting method; S2: The U-shaped metal valve seat ring is made by high temperature sintering of alloy powder; S3: Make cleaning components, drive mechanism, and control box; S4: Install the disc plate rotating shaft and the two first rotating columns on the valve body, and perform packing sealing on the shaft hole; S5: Assemble the U-ring metal valve seat ring on the valve body; S6: At this time, the fifth bearing seat, the sixth bearing seat and the fixing seat of the cleaning assembly are installed on the outer wall of the valve body, and the driving mechanism is installed on the outer wall of the valve body, and the driving mechanism and the cleaning assembly structure are matched; S7: The battery in the control box is used to power the motor and the electric telescopic rod, and the operation of the motor and the electric telescopic rod is controlled by the control panel.

[0015] Furthermore, the alloy powder includes nickel powder, chromium powder, copper powder, titanium powder and beryllium powder. The nickel powder, chromium powder and copper powder are used as mother powders, and their particle sizes are distributed between 4.0 and 10.0 microns. The titanium powder and beryllium powder are used as auxiliary powders, and their particle sizes are distributed between 0.5 and 2.0 microns.

[0016] Compared with the prior art, the beneficial effects of the present invention include: The device is set up in three working states: cleaning the left inner wall of the valve body, opening and closing the valve body, and cleaning the right inner wall of the valve body. Compared with the traditional three-station action, which requires the corresponding power mechanism such as the motor and the motor circuit to move, and the movement of the motor circuit will lead to the problem of short circuit life, the device only needs to move the spline bar to realize the automatic operation of the three stations, greatly extending the service life and maintenance cost of the device; Moreover, the device only needs one motor to complete the multifunctional operation of the device, which is a significant improvement over traditional mechanical equipment. It is easy to operate, has low manufacturing cost, compact structure, and has good market promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 It shows a cross-sectional structural schematic diagram of a sealing butterfly valve according to the present invention; Figure 2 It shows that according to the present invention Figure 1 Schematic diagram of the upper structure; Figure 3 The device according to the present invention is shown Figure 2 The enlarged structural diagram on the left side; Figure 4 The device according to the present invention is shown Figure 2 The enlarged structural diagram on the right side of FIG. Figure 5 The device according to the present invention is shown Figure 2 Schematic diagram of the upper enlarged structure; Figure 6 The device according to the present invention is shown Figure 1 Schematic diagram of the enlarged structure at A; Figure 7 The device according to the present invention is shown Figure 3 Schematic diagram of the enlarged structure at B; Figure 8 The device according to the present invention is shown Figure 4 Schematic diagram of the enlarged structure at C; Fig. 9 A schematic diagram showing the processing and forming of the butterfly plate of the device of the present invention is shown; Fig.10 The device according to the present invention is shown Figure 1 Schematic diagram of the enlarged structure of the radial cross-section of one side of the U-ring metal valve seat ring.

[0018] Numbers in the figure: 1, valve body; 2, cleaning installation plate; 3, cleaning head; 4, first spline sleeve; 5, first bearing seat; 6, first connecting strip; 7, first spline shaft; 8, first rotating column; 9, second bearing seat; 10, disc plate; 11, box; 12, cavity; 13, motor; 14, electric telescopic rod; 15, third bearing seat; 16, first limit slide; 17, second spline sleeve; 18, third spline sleeve; 19, first gear; 20, disc plate rotating shaft; 21, fourth bearing seat; 22, control box; 23, battery; 24, control board; 25, fifth bearing seat; 26, second gear; 2 7. Fixed seat; 28. Second limiting slide groove; 29. ​​Threaded rod; 30. Sliding plate; 31. Sixth bearing seat; 32. First bevel gear; 33. Second rotating column; 34. Second bevel gear; 35. Third gear; 36. Second spline shaft; 37. Fourth spline shaft sleeve; 38. Spline strip; 39. Fourth gear; 40. Fifth gear; 41. Third rotating column; 42. Seventh bearing seat; 43. Third bevel gear; 44. Fourth bevel gear; 45. Fifth bevel gear; 46. Sixth bevel gear; 47. Eighth bearing seat; 48. Fourth rotating column; 49. Sixth gear; 50. Seventh gear; 51. U-shaped ring metal valve seat ring. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0020] Embodiment 1: Key References Figure 1 A disc plate 10 is installed in the valve body 1, and a U-shaped metal valve seat ring 51 is provided between the valve body 1 and the disc plate 10. The disc plate 10 is eccentrically rotatably arranged in the valve body 1. The U-shaped metal valve seat ring 51 is a metal elastic sealing ring. The radial cross section of the U-shaped metal valve seat ring 51 is roughly U-shaped. The U-shaped metal valve seat ring 51 forms a metal seal with the disc plate 10 through the radial elastic force of the U-shaped ring; The disc plate 10 is processed by a conical chamfering method. When the U-ring metal valve seat ring 51 and the disc plate 10 are in contact, an elliptical sealing surface is formed, and a multi-position seal is formed between 86 and 94 degrees.

[0021] Key References Figure 2 and Figure 3 A disc plate rotating shaft 20 is rotatably connected to the valve body 1, and the disc plate rotating shaft 20 is fixedly connected to the disc plate 10 for driving the disc plate 10 to open or close.

[0022] Key References Figure 7 The top of the valve body 1 is fixedly connected to the box body 11, the inner wall of the cavity 12 in the box body 11 is rotatably connected to the second spline shaft 36, the outer wall of the second spline shaft 36 is limitedly slidably connected to the fourth spline sleeve 37, the outer wall of the fourth spline sleeve 37 is circumferentially distributed with a plurality of spline strips 38, and the outer wall of the fourth spline sleeve 37 is fixedly connected to the fourth gear 39; The inner wall of the cavity 12 is fixedly connected with a seventh bearing seat 42, and the third rotating column 41 is limitedly rotatably connected in the seventh bearing seat 42. The fifth gear 40 and the third bevel gear 43 are fixedly connected on both sides of the third rotating column 41, and the fourth gear 39 is meshed with the fifth gear 40; The disc plate rotating shaft 20 is fixedly connected to the portion outside the valve body 1 with the fourth bevel gear 44, and the third bevel gear 43 and the fourth bevel gear 44 are meshed with each other; A motor 13 is fixedly mounted on the box body 11 , and a power output end of the motor 13 is connected to the second spline shaft 36 .

[0023] Embodiment 2: Based on Embodiment 1, a technical means for removing foreign matter from the inner walls on both sides of the valve body 1 is added.

[0024] Key References Figure 4 , Figure 6 and Figure 8 The inner wall of the valve body 1 is fixedly connected with two groups of fifth bearing seats 25, sixth bearing seats 31, and fixed seats 27. The two groups of fifth bearing seats 25, sixth bearing seats 31, and fixed seats 27 are respectively located on both sides of the disc plate 10. A threaded rod 29 is rotatably connected between the fixed seat 27 and the sixth bearing seat 31. The outer wall of the threaded rod 29 is threadedly connected with a sliding plate 30. One side of the sliding plate 30 is fixedly connected with a first connecting strip 6. The first connecting strip 6 is limitedly slidably connected in a second limited sliding groove 28 provided on the fixed seat 27. One side of the first connecting strip 6 is fixedly connected with a first bearing seat 5. The sixth bearing seat 31 is rotatably connected to a second rotating column 33, the second rotating column 33 and the threaded rod 29 are coaxial and fixedly connected to each other, and the outer wall of the second rotating column 33 is fixedly connected to a third gear 35 and a second bevel gear 34; The fifth bearing seat 25 is rotatably connected to the first spline shaft 7 in an upper limit position, the outer wall of the first spline shaft 7 is slidably connected to the first spline shaft sleeve 4 in a limited position, and the first spline shaft sleeve 4 is rotatably connected in the first bearing seat 5 in a limited position; The outer wall of the first spline shaft 7 is fixedly connected to the second gear 26, and the second gear 26 and the third gear 35 are meshed with each other; A plurality of cleaning mounting plates 2 are distributed around the outer wall of the first spline sleeve 4. A cleaning head 3 is fixedly connected to one side of the cleaning mounting plates 2 away from the first spline sleeve 4. The cleaning head 3 cooperates with the inner wall of the valve body 1 to clean debris from the inner wall of the valve body 1.

[0025] The inner wall of the cavity 12 is rotatably connected with the third spline sleeve 18 at the upper limit position, the second spline shaft 36 is located at the center of the third spline sleeve 18, and the second spline shaft 36 and the third spline sleeve 18 do not contact each other, the second spline shaft 36 and the third spline sleeve 18 are coaxial, and the outer wall of the third spline sleeve 18 is fixedly connected with the first gear 19; The inner wall of the cavity 12 is fixedly connected with a fourth bearing seat 21, the inner wall of the fourth bearing seat 21 is limitedly rotatably connected with a second spline sleeve 17, the outer wall of the second spline sleeve 17 is fixedly connected with a seventh gear 50, the second spline sleeve 17 is coaxial with the third spline sleeve 18, and the fourth spline sleeve 37 is located between the second spline sleeve 17 and the third spline sleeve 18; The outer wall of the fourth spline sleeve 37 is connected to the third bearing seat 15 for limited rotation, the inner wall of the cavity 12 is fixedly connected to the electric telescopic rod 14, the third bearing seat 15 is connected to the first limited sliding groove 16 opened on the inner wall of the cavity 12 for limited sliding movement, and the electric telescopic rod 14 is fixedly connected to the third bearing seat 15.

[0026] The spline strip 38 can be connected in a limited sliding manner in the third spline shaft sleeve 18 , and can also be connected in a limited sliding manner in the second spline shaft sleeve 17 .

[0027] Two second bearing seats 9 are fixedly connected in the valve body 1, and first rotating columns 8 are limitedly rotatably connected in the two second bearing seats 9. The top and bottom of the two first rotating columns 8 are respectively fixedly connected with fifth bevel gears 45 and first bevel gears 32, and the first bevel gears 32 and second bevel gears 34 are meshed with each other. Two eighth bearing seats 47 are fixedly connected in the cavity 12, and fourth rotating columns 48 are connected in a limited rotation manner in the two eighth bearing seats 47. Sixth gears 49 and sixth bevel gears 46 are fixedly connected at both ends of the fourth rotating column 48, respectively. Fifth bevel gears 45 are fixedly connected to the tops of the two first rotating columns 8, and the fifth bevel gears 45 and the sixth bevel gears 46 are meshed with each other, one of the sixth gears 49 is meshed with the seventh gear 50, and the other sixth gear 49 is meshed with the first gear 19.

[0028] The other structures are the same as those of the first embodiment.

[0029] Embodiment 3: Based on Embodiment 2, a technical means for automatically controlling the operation of the device is added.

[0030] Key References Figure 5 A control box 22 is fixedly installed on the top of the box body 11, and a battery 23 and a control board 24 are installed in the control box 22. The control board 24, the battery 23, the electric telescopic rod 14, and the motor 13 are electrically connected. A signal transmitting module and a signal receiving module are provided on the control board 24 for receiving external control signals and sending current signals for controlling the operation of the device.

[0031] The other structures are the same as those in the second embodiment.

[0032] When making it, specifically: S1: The disc plate 10 is formed by a conical chamfering method. The disc plate 10 is in a truncated cone shape, such as Fig. 9 As shown; S2: A U-shaped metal valve seat ring 51 is manufactured by cold-rolled plate or alloy powder by high-temperature sintering; S3: Making cleaning components, driving mechanism, and control box 22; S4: Install the disc plate rotating shaft 20 and the two first rotating columns 8 on the valve body 1, and perform packing sealing on the shaft hole; S5: Assemble the U-ring metal valve seat ring 51 on the valve body 1; S6: At this time, the fifth bearing seat 25, the sixth bearing seat 31 and the fixing seat 27 of the cleaning assembly are installed on the inner wall of the valve body 1, and the driving mechanism is installed on the outer wall of the valve body 1, and the driving mechanism and the cleaning assembly structure are matched; S7: The battery 23 in the control box 22 supplies power to the motor 13 and the electric telescopic rod 14 , and the control panel 24 controls the operation of the motor 13 and the electric telescopic rod 14 .

[0033] Since the disc plate 10 is processed into a truncated cone shape by a conical chamfering method, the U-shaped metal valve seat ring 51 forms an elliptical sealing surface when in contact with the disc plate 10, and forms a multi-position floating seal near 90 degrees. The U-shaped metal valve seat ring 51 can be directly embedded and installed on the inner wall of the valve body 1, or a boss and a pressure ring can be set on the inner wall of the valve body 1 for fixing. In this way, the elasticity of the U-shaped ring itself and the contact with the disc plate 10 can be completely relied on for sealing without the use of a gasket.

[0034] In order to form a multi-position floating seal in a larger range near 90 degrees as much as possible and ensure the sealing effect and service life of the valve, it is necessary to further improve and optimize the structure and material of the U-shaped metal valve seat ring 51. When pressure acts on the valve seat ring, according to the flat plate force theory, the force on the valve seat ring is mainly reflected at the bottom; for this reason, the U-shaped metal valve seat ring 51 includes a bottom and two support arms, the inner side opening angle of the support arm is greater than the outer side opening angle, so that the wall thickness of the U-shaped ring gradually increases from the end to the bottom; in this way, the bottom can withstand higher pressure; Fig.10 As shown, the inner side opening angle b of the support arm of the U-shaped metal valve seat ring 51 is greater than the outer side opening angle a, and the thickness D is greater than the thickness d. In this way, during the floating process of the valve seat ring, it can fit more closely and improve the sealing properties. Preferably, the inner side opening angle b is 0 to 4 degrees greater than the outer side opening angle a, and after matching with the frustoconical disc plate, it is ensured that the U-shaped metal valve seat ring 51 and the disc plate 10 form a multi-position seal more reliably between 86 and 94 degrees.

[0035] The U-shaped metal valve seat ring 51 is relatively complicated to be processed by cold rolling and it is difficult to accurately control the size. Therefore, it is preferably prepared by high-temperature sintering of alloy powder. The specific powder selection and sintering process are as follows: S21. Pre-design a matching metal mold for the valve seat ring.

[0036] S22. Fully mix the nickel-based alloy powder with the adhesive and then granulate; the nickel-based alloy powder includes nickel powder, chromium powder, copper powder, titanium powder and beryllium powder of different particle sizes; chromium is not only similar to nickel in corrosion resistance and high temperature stability, but also has higher hardness and strength; nickel-beryllium alloy has high fatigue strength and high elastic modulus, and beryllium has a small molecular weight, which can better fill the gaps between other metal powders and improve overall corrosion resistance and wear resistance. Among them, nickel powder, chromium powder and copper powder are used as parent powders, and the particle size distribution is between 4.0-10.0 microns; titanium powder and beryllium powder are used as auxiliary powders, and the particle size distribution is between 0.5-2.0 microns. In this way, the auxiliary powder can be fully filled in the gap of the parent powder, and powders of various different particle sizes are closely stacked together. After high-temperature sintering, not only the internal structure of the U-shaped ring is more uniform and dense, with high surface strength and corrosion resistance, but also certain elastic properties are taken into account. Preferably, the particle size of the nickel powder is in the range of 8.0-10.0 microns, the particle size of the chromium powder is in the range of 6.0-8.0 microns, the particle size of the copper powder is in the range of 4.0-6.0 microns; the particle size of the titanium powder is in the range of 1.5-2.0 microns, the particle size of the beryllium powder is in the range of 0.5-1.0 microns, and the weight ratio of the nickel powder: chromium powder: copper powder: titanium powder: beryllium powder is 15-20: 10-15: 5-10: 2: 1. Through the dual improvement of material and structure, it is further ensured that the valve can still guarantee a good floating sealing effect during long-term use, greatly improving the service life of the valve.

[0037] S23, heating the granulated mixture into a fluid material in the barrel of an injection machine, and injecting it into a metal mold under a set injection pressure to form a preform.

[0038] S24, placing the prefabricated embryo into the extraction liquid, removing the adhesive, and placing it into a sintering furnace for high-temperature sintering to obtain a valve seat ring.

[0039] In this embodiment, both sides of the device are first installed on the pipeline. During the installation process, dirt or other impurities may be placed on the inner wall of the valve body 1. If the impurities are placed on the inner wall of the pipeline for a long time, bacteria and other foreign matter will grow, thereby contaminating the medium in the pipeline and affecting the sealing performance of the valve.

[0040] First, the electric telescopic rod 14 is started to shrink the electric telescopic rod 14 to the shortest state, and at this time, the first gear 19 and the sixth gear 49 are meshed with each other, and the spline strip 38 is limited and slidably connected in the third spline sleeve 18. The motor 13 is started to rotate the second spline shaft 36, the fourth spline sleeve 37, the spline strip 38, and the third spline sleeve 18. At this time, the meshing action of the third spline sleeve 18 and the sixth gear 49, and the meshing action of the sixth bevel gear 46 and the fifth bevel gear 45 drive the first rotating column 8 and the first bevel gear 32 to rotate. At this time, the first bevel gear 32 and the second bevel gear 34 are meshed with each other to make the second rotating column 33 and the threaded rod 29 rotate in a circle. At this time, the sliding plate 30, the first connecting strip 6, and the first bearing seat 5 move to one side under the threaded cooperation and limit action, and the first bearing seat 5 drives the first spline sleeve 4 to move to one side. At this time, the third gear 35 and the second gear 26 are meshed with each other, driving the first spline shaft 7 and the first spline sleeve 4 to rotate circumferentially. At this time, the plurality of cleaning mounting plates 2 and the cleaning head 3 move circumferentially to one side, so that the cleaning head 3 removes impurities on the inner wall of the left side of the valve body 1.

[0041] Then the electric telescopic rod 14 is started to extend to the longest state, at which time the seventh gear 50 is meshed with the sixth gear 49, and the spline strip 38 is limited and slidably connected in the second spline sleeve 17. The motor 13 is started to rotate the second spline shaft 36, the fourth spline sleeve 37, the spline strip 38, and the second spline sleeve 17. At this time, the meshing action of the seventh gear 50 and the sixth gear 49, and the meshing action of the sixth bevel gear 46 and the fifth bevel gear 45 drive the first rotating column 8 and the first bevel gear 32 to rotate. At this time, the first bevel gear 32 and the second bevel gear 34 are meshed with each other to make the second rotating column 33 and the threaded rod 29 rotate in a circle. At this time, the sliding plate 30, the first connecting strip 6, and the first bearing seat 5 move to one side under the threaded cooperation and limiting action, and the first bearing seat 5 drives the first spline sleeve 4 to move to one side. At this time, the third gear 35 and the second gear 26 are meshed with each other, driving the first spline shaft 7 and the first spline sleeve 4 to rotate in a circle. At this time, the plurality of cleaning mounting plates 2 and the cleaning head 3 move circumferentially to one side, so that the cleaning head 3 removes impurities on the inner wall on the right side of the valve body 1 .

[0042] The electric telescopic rod 14 is started so that the fourth gear 39 and the fifth gear 40 keep meshing. At this time, the spline bar 38 is neither slidably connected to the third spline shaft sleeve 18 nor slidably connected to the second spline shaft sleeve 17. At this time, the motor 13 is started to drive the second spline shaft 36, the fourth spline shaft sleeve 37, and the fourth gear 39 to rotate in a circle. The fourth gear 39 is meshed with the fifth gear 40, and the third bevel gear 43 is meshed with the fourth bevel gear 44, thereby driving the disc plate rotating shaft 20 to rotate, thereby rotating the disc plate 10 to open and close the valve body 1.

[0043] In summary, the device is divided into three working states, namely: cleaning the left inner wall of the valve body 1 foreign matter working state, opening and closing the valve body 1 working state, and cleaning the right inner wall of the valve body 1 foreign matter working state. Compared with the traditional three-station action, it is necessary to drive the corresponding power mechanism such as the motor and the motor line to move, and the movement of the motor line will lead to the problem of short line life. The device only needs to move the spline bar 38 to realize the automatic operation of the three stations, which greatly extends the service life and maintenance cost of the device.

[0044] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A U-ring metal sealing butterfly valve, characterized in that: include: A valve body (1), wherein a disc plate (10) is installed in the valve body (1), and a U-shaped metal valve seat ring (51) is provided between the valve body (1) and the disc plate (10); A disc plate rotating shaft (20) is rotatably connected to the valve body (1), and the disc plate rotating shaft (20) is fixedly connected to the disc plate (10) and is used to drive the disc plate (10) to open or close; Two groups of cleaning components are arranged in the valve body (1), respectively placed on both sides of the disc plate (10), and are used to remove foreign matter from the two inner walls of the valve body (1); A driving mechanism is also provided outside the valve body (1), and the driving mechanism drives two groups of cleaning components to remove foreign matter from the two inner walls, and drives the disc plate rotating shaft (20) to rotate so that the disc plate (10) is opened or closed.

2. A U-ring metal sealing butterfly valve according to claim 1, characterized in that: The cleaning assembly comprises a fifth bearing seat (25), a sixth bearing seat (31) and a fixed seat (27); the inner wall of the valve body (1) is fixedly connected with the fifth bearing seat (25), the sixth bearing seat (31) and the fixed seat (27); a threaded rod (29) is rotatably connected between the fixed seat (27) and the sixth bearing seat (31); the outer wall of the threaded rod (29) is threadedly connected with a sliding plate (30); one side of the sliding plate (30) is fixedly connected with a first connecting strip (6); the first connecting strip (6) is limitedly slidably connected in a second limited sliding groove (28) provided on the fixed seat (27); and one side of the first connecting strip (6) is fixedly connected with the first bearing seat (5); The sixth bearing seat (31) is rotatably connected to a second rotating column (33); the second rotating column (33) and the threaded rod (29) are coaxial and fixedly connected to each other; and the outer wall of the second rotating column (33) is fixedly connected to a third gear (35) and a second bevel gear (34); The fifth bearing seat (25) is rotatably connected to the first spline shaft (7) in an upper limit position, the outer wall of the first spline shaft (7) is slidably connected to the first spline shaft sleeve (4), and the first spline shaft sleeve (4) is rotatably connected to the first bearing seat (5) in a limited position; A second gear (26) is fixedly connected to the outer wall of the first spline shaft (7), and the second gear (26) and the third gear (35) are meshed with each other; A plurality of cleaning mounting plates (2) are distributed around the outer wall of the first spline shaft sleeve (4); a cleaning head (3) is fixedly connected to one side of the plurality of cleaning mounting plates (2) away from the first spline shaft sleeve (4); the cleaning head (3) cooperates with the inner wall of the valve body (1) and is used to clean debris from the inner wall of the valve body (1).

3. A U-ring metal sealing butterfly valve according to claim 1, characterized in that: The driving mechanism comprises a first rotating mechanism for rotating the disc plate rotating shaft (20) and a second rotating mechanism for rotating the two second rotating columns (33).

4. A U-ring metal sealing butterfly valve according to claim 3, characterized in that: The first rotating mechanism comprises a box body (11), the top of the valve body (1) is fixedly connected to the box body (11), the inner wall of the cavity (12) in the box body (11) is rotatably connected to a second spline shaft (36), the outer wall of the second spline shaft (36) is limitedly slidably connected to a fourth spline shaft sleeve (37), the outer wall of the fourth spline shaft sleeve (37) is circumferentially distributed with a plurality of spline strips (38), and the outer wall of the fourth spline shaft sleeve (37) is fixedly connected to a fourth gear (39); The inner wall of the cavity (12) is fixedly connected to a seventh bearing seat (42), the inner part of the seventh bearing seat (42) is limitedly rotatably connected to a third rotating column (41), the two sides of the third rotating column (41) are respectively fixedly connected to a fifth gear (40) and a third bevel gear (43), and the fourth gear (39) is meshed with the fifth gear (40); The portion of the disc plate rotating shaft (20) disposed outside the valve body (1) is fixedly connected to a fourth bevel gear (44), and the third bevel gear (43) and the fourth bevel gear (44) are meshed with each other; A motor (13) is fixedly mounted on the box body (11), and a power output end of the motor (13) is connected to a second spline shaft (36).

5. A U-ring metal sealing butterfly valve according to claim 4, characterized in that: The second rotating mechanism comprises a third spline sleeve (18), the inner wall of the cavity (12) is rotatably connected to the third spline sleeve (18) in an upper limit position, the second spline shaft (36) is located at the center of the third spline sleeve (18), the second spline shaft (36) and the third spline sleeve (18) are not in contact with each other, the second spline shaft (36) and the third spline sleeve (18) are coaxial, and the outer wall of the third spline sleeve (18) is fixedly connected to the first gear (19); The inner wall of the cavity (12) is fixedly connected to a fourth bearing seat (21), the inner part of the fourth bearing seat (21) is limitedly rotatably connected to a second spline shaft sleeve (17), the outer wall of the second spline shaft sleeve (17) is fixedly connected to a seventh gear (50), the second spline shaft sleeve (17) is coaxial with the third spline shaft sleeve (18), and the fourth spline shaft sleeve (37) is located between the second spline shaft sleeve (17) and the third spline shaft sleeve (18); The fourth spline shaft sleeve (37) is provided with a left-right moving mechanism, and the spline strip (38) can be connected in a limited sliding manner in the second spline shaft sleeve (17) or the third spline shaft sleeve (18); Two second bearing seats (9) are fixedly connected inside the valve body (1), and first rotating columns (8) are both limitedly rotatably connected inside the two second bearing seats (9). The top and bottom parts of the two first rotating columns (8) are respectively fixedly connected with fifth bevel teeth (45) and first bevel teeth (32), and the first bevel teeth (32) and the second bevel teeth (34) are meshed with each other; Two eighth bearing seats (47) are fixedly connected in the cavity (12), and a fourth rotating column (48) is limitedly rotatably connected in the two eighth bearing seats (47), and the two ends of the fourth rotating column (48) are respectively fixedly connected to a sixth gear (49) and a sixth bevel gear (46), and the tops of the two first rotating columns (8) are fixedly connected to a fifth bevel gear (45), and the fifth bevel gear (45) and the sixth bevel gear (46) are meshed with each other, one of the sixth gears (49) is meshed with the seventh gear (50), and the other sixth gear (49) is meshed with the first gear (19).

6. A U-ring metal sealing butterfly valve according to claim 5, characterized in that: The left-right moving mechanism comprises a third bearing seat (15), the outer wall of the fourth spline shaft sleeve (37) is connected to the third bearing seat (15) in a limited rotational manner, the inner wall of the cavity (12) is fixedly connected to an electric telescopic rod (14), the third bearing seat (15) is connected to a first limited sliding groove (16) provided on the inner wall of the cavity (12) in a limited sliding manner, and the electric telescopic rod (14) is fixedly connected to the third bearing seat (15).

7. A U-ring metal sealing butterfly valve according to claim 6, characterized in that: A control box (22) is fixedly mounted on the top of the box body (11), a storage battery (23) and a control panel (24) are mounted in the control box (22), and the control panel (24), the storage battery (23), the electric telescopic rod (14), and the motor (13) are electrically connected.

8. A U-ring metal sealing butterfly valve according to claim 7, characterized in that: The U-shaped metal valve seat ring (51) comprises a bottom and two support arms, the inner side opening angle of the support arms being 0 to 4 degrees greater than the outer side opening angle, so that the wall thickness of the U-shaped ring gradually increases from the end to the bottom; the disc plate (10) is formed by conical beveling, and the U-shaped metal valve seat ring (51) and the disc plate (10) form an elliptical sealing surface when in contact, and form a multi-position seal between 86 and 94 degrees.

9. A method for manufacturing a U-ring metal-sealed butterfly valve, using the U-ring metal-sealed butterfly valve as claimed in claim 7, characterized in that: include: S1: using a conical chamfering method to form a disc plate (10); S2: A U-shaped metal valve seat ring (51) is manufactured by high temperature sintering of alloy powder; S3: manufacturing a cleaning component, a driving mechanism, and a control box (22); S4: Install the disc plate rotating shaft (20) and the two first rotating columns (8) on the valve body (1), and perform packing sealing on the shaft hole; S5: Assemble the U-ring metal valve seat ring (51) onto the valve body (1); S6: At this time, the fifth bearing seat (25), the sixth bearing seat (31) and the fixing seat (27) of the cleaning assembly are mounted on the inner wall of the valve body (1), and the driving mechanism is mounted on the outer wall of the valve body (1), and the driving mechanism and the cleaning assembly are structured so as to match each other; S7: The storage battery (23) in the control box (22) is used to supply power to the motor (13) and the electric telescopic rod (14), and the operation of the motor (13) and the electric telescopic rod (14) is controlled by the control panel (24).

10. The method for manufacturing a U-ring metal-sealed butterfly valve according to claim 9, characterized in that: The alloy powder includes nickel powder, chromium powder, copper powder, titanium powder and beryllium powder. The nickel powder, chromium powder and copper powder are used as mother powders, and the particle size distribution is between 4.0 and 10.0 microns; the titanium powder and beryllium powder are used as auxiliary powders, and the particle size distribution is between 0.5 and 2.0 microns.

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