A U-shaped ring metal seal butterfly valve and a manufacturing method thereof

Abstract

The application relates to the technical field of sealed butterfly valve manufacturing, in particular to a U-shaped ring metal sealed butterfly valve and a manufacturing method thereof. The valve body is internally provided with a disc plate, and a U-shaped ring metal valve seat ring is arranged between the valve body and the disc plate; the valve body is rotationally connected with a disc plate rotating shaft which is fixedly connected with the disc plate and used for driving the disc plate to open or close; two groups of cleaning assemblies are arranged in the valve body and arranged on the two sides of the disc plate respectively and used for removing foreign matters on the two inner walls of the valve body; a driving mechanism is further arranged outside the valve body, the driving mechanism drives the two groups of cleaning assemblies to remove foreign matters on the two inner walls, and drives the disc plate rotating shaft to rotate so that the disc plate is opened or closed. The device can remove foreign matters on the left inner wall and the right inner wall of the valve body, thereby guaranteeing the cleanliness of the inner wall of the pipeline and the safety of the medium, effectively improving the sealing performance of the valve, and prolonging the service life of the valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of manufacturing sealed butterfly valves, and particularly relates to a U-shaped ring metal sealed butterfly valve and a manufacturing method thereof. BACKGROUND

[0002] The butterfly valve is also called a flap valve, and is a simple structure regulating valve, which can be used for on-off control of low-pressure pipeline medium. The butterfly valve refers to a disc-shaped closing element (valve disc or butterfly plate) which rotates around a valve shaft to achieve opening and closing.

[0003] The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. In the pipeline, the valve mainly plays a role of cutting off and throttling. The butterfly valve has a disc-shaped butterfly plate which rotates around its own axis in the valve body to achieve the purpose of opening, closing or adjusting.

[0004] When the butterfly valve is installed, sometimes foreign matters such as soil and leaves enter the inner wall of the valve body. The foreign matters adsorbed on the inner wall of the valve body and the butterfly plate can breed bacteria, thereby affecting the cleanliness of the pipeline inner wall and the safety of the medium, and affecting the sealing performance of the valve. Therefore, it is necessary to improve the sealed butterfly valve and the manufacturing method thereof. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the defects in the prior art. The present application provides a U-shaped ring metal sealed butterfly valve and a manufacturing method thereof, which can completely remove the foreign matters on the left inner wall and the right inner wall of the valve body, thereby ensuring the cleanliness of the pipeline inner wall and the safety of the medium, effectively improving the sealing performance of the valve, and prolonging the service life of the valve.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a U-shaped ring metal sealed butterfly valve, comprising:

[0007] A valve body is provided with a disc plate, and a U-shaped ring metal valve seat ring is arranged between the valve body and the disc plate.

[0008] A disc plate rotating shaft is rotatably connected to the valve body, and the disc plate rotating shaft is fixedly connected with the disc plate and used for driving the disc plate to open or close.

[0009] Two groups of cleaning assemblies are arranged in the valve body and arranged on the two sides of the disc plate, and used for removing the foreign matters on the two inner walls of the valve body.

[0010] A driving mechanism is further arranged outside the valve body, the driving mechanism drives the two groups of cleaning assemblies to remove the foreign matters on the two inner walls, and drives the disc plate rotating shaft to rotate to open or close the disc plate.

[0011] Further, the cleaning assembly comprises a fifth bearing seat, a sixth bearing seat and a fixed seat, the valve body inner wall 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 limitingly and slidably connected in a second limiting sliding groove formed in the fixed seat, one side of the first connecting strip is fixedly connected with a first bearing seat;

[0012] A second rotating column is rotatably connected to the sixth bearing seat, the second rotating column is coaxial with the threaded rod and is fixedly connected with the threaded rod, the outer wall of the second rotating column is fixedly connected with a third gear and a second bevel gear;

[0013] A first spline shaft is limitingly and rotatably connected to the fifth bearing seat, the outer wall of the first spline shaft is limitingly and slidably connected with a first spline shaft sleeve, the first spline shaft sleeve is limitingly and rotatably connected in the first bearing seat;

[0014] The outer wall of the first spline shaft is fixedly connected with a second gear, the second gear is meshed with the third gear;

[0015] The outer wall of the first spline shaft sleeve is circumferentially provided with a plurality of cleaning installation plates, one side of the plurality of cleaning installation plates away from the first spline shaft sleeve is fixedly connected with a cleaning head, the cleaning head is matched with the valve body inner wall and is used for cleaning sundries on the valve body inner wall.

[0016] Further, the driving mechanism comprises a first rotating mechanism for rotating the disc plate rotating shaft and a second rotating mechanism for rotating the two second rotating columns.

[0017] Further, the first rotating mechanism comprises a box body, the top of the valve body is fixedly connected with the box body, a second spline shaft is rotatably connected to the inner wall of a cavity in the box body, the outer wall of the second spline shaft is limitingly and slidably connected with a fourth spline shaft sleeve, the outer wall of the fourth spline shaft sleeve is circumferentially provided with a plurality of spline strips, and the outer wall of the fourth spline shaft sleeve is fixedly connected with a fourth gear;

[0018] The inner wall of the cavity is fixedly connected with a seventh bearing seat, a third rotating column is limitingly and rotatably connected in the seventh bearing seat, 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;

[0019] The part of the disc plate rotating shaft outside the valve body is fixedly connected with a fourth bevel gear, and the third bevel gear is meshed with the fourth bevel gear;

[0020] A motor is fixedly installed on the box body, and the power output end of the motor is connected with the second spline shaft.

[0021] Further, the second rotating mechanism comprises a third spline sleeve, the third spline sleeve is rotationally connected to the inner wall of the cavity, the second spline shaft is located in 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 a first gear;

[0022] The inner wall of the cavity is fixedly connected with a fourth bearing seat, the second spline sleeve is rotationally connected to the fourth bearing seat, the outer wall of the second spline sleeve is fixedly connected with a seventh gear, the second spline sleeve and the third spline sleeve are coaxial, and the fourth spline sleeve is located between the second spline sleeve and the third spline sleeve.

[0023] The fourth spline sleeve is provided with a left-right moving mechanism, and the spline strip is limitingly and slidably connected in the second spline sleeve or the third spline sleeve.

[0024] The valve body is fixedly connected with two second bearing seats, and first rotating columns are rotationally connected in the two second bearing seats, fifth bevel gears and first bevel gears are fixedly connected to the top and bottom of the two first rotating columns, and the first bevel gears and the second bevel gears are in mesh with each other.

[0025] The cavity is fixedly connected with two eighth bearing seats, fourth rotating columns are rotationally connected in the two eighth bearing seats, sixth gears and sixth bevel gears are fixedly connected to the two ends of the fourth rotating column, a fifth bevel gear is fixedly connected to the top of the two first rotating columns, the fifth bevel gear and the sixth bevel gear are in mesh with each other, one of the sixth gears and the seventh gear are in mesh with each other, and the other sixth gear and the first gear are in mesh with each other.

[0026] Further, the left-right moving mechanism comprises a third bearing seat, the outer wall of the fourth spline sleeve is rotationally connected with the third bearing seat, an electric telescopic rod is fixedly connected to the inner wall of the cavity, the third bearing seat is limitingly and slidably connected in a first limiting sliding groove formed in the inner wall of the cavity, and the electric telescopic rod is fixedly connected with the third bearing seat.

[0027] Further, a control box is fixedly installed at the top of the box body, a storage battery and a control panel are installed in the control box, and the control panel, the storage battery, the electric telescopic rod and the motor are electrically connected.

[0028] Further, the U-shaped ring metal valve seat ring comprises a bottom and two support arms, the inner side of the support arm is opened at an angle larger than the outer side by 0-4 degrees, so that the wall thickness of the U-shaped ring gradually increases from the end to the bottom, the disc plate is processed in a conical inclined manner, and an oval sealing surface is formed when the U-shaped ring metal valve seat ring and the disc plate contact, and a multi-position sealing is formed between 86-94 degrees.

[0029] The manufacturing method of the U-shaped ring metal sealing butterfly valve comprises the following steps:

[0030] S1: a disc plate is formed by conical beveling;

[0031] S2: a U-shaped ring metal valve seat ring is prepared by high-temperature sintering of alloy powder;

[0032] S3: a cleaning assembly, a driving mechanism and a control box are prepared;

[0033] S4: a disc plate rotating shaft and two first rotating columns are installed on the valve body, and the shaft hole is filled and sealed;

[0034] S5: the U-shaped ring metal valve seat ring is assembled on the valve body;

[0035] S6: at this time, the fifth bearing seat and the sixth bearing seat of the cleaning assembly and the fixing seat are installed on the inner wall of the valve body, the driving mechanism is installed on the outer wall of the valve body, and the driving mechanism and the cleaning assembly are structurally matched;

[0036] S7: the motor and the electric telescopic rod are powered by the storage battery in the control box, and the motor and the electric telescopic rod are controlled to operate through the control board.

[0037] Further, the alloy powder comprises nickel powder, chromium powder, copper powder, titanium powder and beryllium powder, the nickel powder, the chromium powder and the copper powder are used as the base powder, and the particle size distribution is between 4.0-10.0 microns; the titanium powder and the beryllium powder are used as auxiliary powder, and the particle size distribution is between 0.5-2.0 microns.

[0038] Compared with the prior art, the beneficial effects of the present application include:

[0039] The device is provided with three working states, i.e., a foreign matter cleaning working state of the left inner wall of the valve body, an opening and closing working state of the valve body and a foreign matter cleaning working state of the right inner wall of the valve body. Compared with the traditional three-station action, the corresponding power mechanism such as a motor and a motor circuit need to be moved, and the movement of the motor circuit will cause the problem of short service life of the circuit. The device only needs to move the spline bar to realize the automatic operation of the three stations, greatly prolonging the service life and maintenance cost of the device.

[0040] And the device only needs one motor to complete the multifunctional operation of the device, which has made remarkable progress compared with the traditional mechanical equipment, is convenient to operate, has low manufacturing cost, compact structure and good market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0041] The disclosure of the present application will be illustrated with reference to the accompanying drawings. It should be appreciated that the drawings are for illustration purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0042] Figure 1 A cross-sectional structure schematic diagram of a sealing butterfly valve according to the present application is shown;

[0043] Figure 2 A schematic diagram of the upper structure of the Figure 1 according to the present application is shown;

[0044] Figure 3 A left side enlarged structure schematic diagram of the Figure 2 according to the present application device is shown;

[0045] Figure 4 A right side enlarged structure schematic diagram of the Figure 2 according to the present application device is shown;

[0046] Figure 5 An upper enlarged structure schematic diagram of the Figure 2 according to the present application device is shown;

[0047] Figure 6 An enlarged structure schematic diagram of the Figure 1 at A according to the present application device is shown;

[0048] Figure 7 An enlarged structure schematic diagram of the Figure 3 at B according to the present application device is shown;

[0049] Figure 8 An enlarged structure schematic diagram of the Figure 4 at C according to the present application device is shown;

[0050] Figure 9 A schematic diagram of the butterfly plate processing and forming of the present application device is shown;

[0051] Figure 10 An enlarged structure schematic diagram of the U-shaped ring metal valve seat ring one side radial section of the Figure 1 according to the present application device is shown.

[0052] The figure mark: 1, valve body; 2, cleaning mounting plate; 3, cleaning head; 4, first spline shaft 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 body; 12, cavity; 13, motor; 14, electric telescopic rod; 15, third bearing seat; 16, first limiting sliding slot; 17, second spline shaft sleeve; 18, third spline shaft sleeve; 19, first gear; 20, disc plate rotating shaft; 21, fourth bearing seat; 22, control box; 23, battery; 24, control panel; 25, fifth bearing seat; 26, second gear; 27, fixed seat; 28, second limiting sliding slot; 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

[0053] It is easy to understand that according to the technical scheme of the present application, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary description of the technical scheme of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical scheme of the present application.

[0054] Example one:

[0055] Key reference Figure 1 Valve body 1 is provided with disc plate 10, U-shaped ring metal valve seat ring 51 is arranged between valve body 1 and disc plate 10, disc plate 10 is arranged in valve body 1 in a manner of eccentric rotation, U-shaped ring metal valve seat ring 51 is a metal elastic sealing ring, the radial section of U-shaped ring metal valve seat ring 51 is substantially in the shape of U, metal sealing is formed between U-shaped ring metal valve seat ring 51 and disc plate 10 through the radial elastic force of U-shaped ring.

[0056] Disc plate 10 is processed in a manner of conical beveling, when U-shaped ring metal valve seat ring 51 and disc plate 10 are in contact, an oval sealing surface is formed, and multi-position sealing is formed between 86 and 94 degrees.

[0057] Key reference Figure 2 And Figure 3 Disc plate rotating shaft 20 is rotatably connected to valve body 1, disc plate rotating shaft 20 is fixedly connected with disc plate 10, and is used for driving disc plate 10 to open or close.

[0058] Key reference Figure 7 , The top of the valve body 1 is fixedly connected with a box body 11, the inner wall of the cavity 12 in the box body 11 is rotatably connected with a second spline shaft 36, the outer wall of the second spline shaft 36 is limitingly and slidably connected with a fourth spline shaft sleeve 37, the outer wall of the fourth spline shaft sleeve 37 is circumferentially provided with a plurality of spline strips 38, and the outer wall of the fourth spline shaft sleeve 37 is fixedly connected with a fourth gear 39;

[0059] The inner wall of the cavity 12 is fixedly connected with a seventh bearing seat 42, the seventh bearing seat 42 is limitingly and rotatably connected with a third rotating column 41, the two sides of the third rotating column 41 are fixedly connected with a fifth gear 40 and a third bevel gear 43 respectively, and the fourth gear 39 and the fifth gear 40 are meshed with each other;

[0060] The fourth bevel gear 44 is fixedly connected to the part of the disc plate rotating shaft 20 outside the valve body 1, and the third bevel gear 43 and the fourth bevel gear 44 are meshed with each other;

[0061] The box body 11 is fixedly provided with a motor 13, and the power output end of the motor 13 is connected with the second spline shaft 36.

[0062] Embodiment two: On the basis of embodiment one, technical means for removing foreign matters on the inner walls of the two sides of the valve body 1 are added.

[0063] Key reference 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 the two sides of the disc plate 10, the fixed seat 27 and the sixth bearing seat 31 are rotatably connected with a threaded rod 29, 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 limitingly and slidably connected in a second limiting sliding groove 28 formed in the fixed seat 27, and one side of the first connecting strip 6 is fixedly connected with a first bearing seat 5;

[0064] The sixth bearing seat 31 is rotatably connected with a second rotating column 33, the second rotating column 33 is coaxial with the threaded rod 29 and is fixedly connected with the threaded rod 29, and the outer wall of the second rotating column 33 is fixedly connected with a third gear 35 and a second bevel gear 34;

[0065] The fifth bearing seat 25 is limitingly and rotatably connected with a first spline shaft 7, the outer wall of the first spline shaft 7 is limitingly and slidably connected with a first spline shaft sleeve 4, and the first spline shaft sleeve 4 is limitingly and rotatably connected in the first bearing seat 5;

[0066] The outer wall of the first spline shaft 7 is fixedly connected with a second gear 26, and the second gear 26 and the third gear 35 are meshed with each other;

[0067] The outer wall of the first spline shaft sleeve 4 is circumferentially provided with a plurality of cleaning mounting plates 2, and the cleaning mounting plates 2 are fixedly connected with cleaning heads 3 away from the first spline shaft sleeve 4. The cleaning heads 3 are matched with the inner wall of the valve body 1, and are used for cleaning sundries on the inner wall of the valve body 1.

[0068] The third spline shaft sleeve 18 is limitingly and rotatably connected to the upper inner wall of the cavity 12, the second spline shaft 36 is located at the center of the third spline shaft sleeve 18, and the second spline shaft 36 and the third spline shaft sleeve 18 are not in contact with each other. The second spline shaft 36 and the third spline shaft sleeve 18 have the same coaxial center, and the outer wall of the third spline shaft sleeve 18 is fixedly connected with the first gear 19.

[0069] The fourth bearing seat 21 is fixedly connected to the inner wall of the cavity 12, the second spline shaft sleeve 17 is limitingly and rotatably connected to the inner portion of the fourth bearing seat 21, the outer wall of the second spline shaft sleeve 17 is fixedly connected with the seventh gear 50, the second spline shaft sleeve 17 and the third spline shaft sleeve 18 have the same coaxial center, and the fourth spline shaft sleeve 37 is located between the second spline shaft sleeve 17 and the third spline shaft sleeve 18.

[0070] The outer wall of the fourth spline shaft sleeve 37 is limitingly and rotatably connected with the third bearing seat 15, the electric telescopic rod 14 is fixedly connected to the inner wall of the cavity 12, and the third bearing seat 15 is limitingly and slidably connected in the first limiting sliding groove 16 formed in the inner wall of the cavity 12. The electric telescopic rod 14 is fixedly connected with the third bearing seat 15.

[0071] The spline strip 38 can be limitingly and slidably connected in the third spline shaft sleeve 18, or can be limitingly and slidably connected in the second spline shaft sleeve 17.

[0072] Two second bearing seats 9 are fixedly connected in the valve body 1, and the first rotating column 8 is limitingly and rotatably connected in each of the two second bearing seats 9. The fifth bevel gear 45 and the first bevel gear 32 are fixedly connected to the top and bottom of the two first rotating columns 8 respectively, and the first bevel gear 32 is meshed with the second bevel gear 34.

[0073] Two eighth bearing seats 47 are fixedly connected in the cavity 12, and the fourth rotating column 48 is limitingly and rotatably connected in each of the two eighth bearing seats 47. The sixth gear 49 and the sixth bevel gear 46 are fixedly connected to the two ends of the fourth rotating column 48 respectively. The fifth bevel gear 45 is fixedly connected to the top of the two first rotating columns 8, and the fifth bevel gear 45 is meshed with the sixth bevel gear 46. 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.

[0074] The other structures are the same as those of the structure of the first embodiment.

[0075] In the third embodiment, the automatic control device is added to the technical means of operation on the basis of the second embodiment.

[0076] Key reference Figure 5 , the top of the box 11 is fixedly installed with a control box 22, a battery 23 and a control panel 24 are installed in the control box 22, the control panel 24, the battery 23, the electric telescopic rod 14 and the motor 13 are electrically connected, and a signal transmitting module and a signal receiving module are arranged on the control panel 24, which are used for receiving external control signals and sending current signals, and are used for controlling the operation of the device.

[0077] Other structures are the same as those of embodiment two.

[0078] In the production, specifically:

[0079] S1: a conical beveling method is used to process a disc plate 10, and the disc plate 10 is in the shape of a circular truncated cone, as shown in Figure 9 ;

[0080] S2: a U-shaped ring metal valve seat ring 51 is made by a cold-rolled plate or an alloy powder high-temperature sintering method;

[0081] S3: a cleaning assembly, a driving mechanism and a control box 22 are made;

[0082] S4: the disc plate rotating shaft 20 and the two first rotating columns 8 are installed on the valve body 1, and the shaft holes are filled and sealed;

[0083] S5: the U-shaped ring metal valve seat ring 51 is assembled on the valve body 1;

[0084] S6: at this time, the fifth bearing seat 25, the sixth bearing seat 31 and the fixed seat 27 of the cleaning assembly are installed on the inner wall of the valve body 1, the driving mechanism is installed on the outer wall of the valve body 1, and the driving mechanism and the cleaning assembly are structurally matched;

[0085] 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.

[0086] Since the disc plate 10 is processed into a circular truncated cone by a conical beveling method, when the U-shaped ring metal valve seat ring 51 contacts the disc plate 10, an oval sealing surface is formed, and a multi-position floating seal is formed near 90 degrees. The U-shaped ring 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 pressing ring can be arranged on the inner wall of the valve body 1 for fixation. In this way, without using a gasket, the U-shaped ring itself and the disc plate 10 can be completely relied on for sealing.

[0087] In order to form a multi-position floating seal in a larger range near 90 degrees as much as possible, ensure the sealing effect and service life of the valve, the structure and material of the U-shaped metal valve seat ring 51 need to be further improved and optimized. According to the flat plate stress theory, the force on the valve seat ring is mainly reflected in the bottom when the pressure acts on the valve seat ring; therefore, 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; as shown in Figure 10 Fig. 6, the inner side opening angle b of the U-shaped metal valve seat ring 51 support arm is greater than the outer side opening angle a, and the thickness D is greater than the thickness d. In this way, the valve seat ring can be more closely fitted during floating, improving the sealing characteristics. Preferably, the inner side opening angle b is 0-4 degrees greater than the outer side opening angle a, and after adapting to the circular table type disc plate, the U-shaped metal valve seat ring 51 and the disc plate 10 can more reliably form a multi-position seal between 86-94 degrees.

[0088] The above-mentioned U-shaped metal valve seat ring 51 is relatively complex to process by cold rolling and difficult to accurately control the size, therefore, it is preferred to be prepared by alloy powder high temperature sintering method, and the specific powder selection and sintering process are as follows:

[0089] S21, a matching metal mold is designed for the valve seat ring in advance.

[0090] S22, the nickel-based alloy powder is mixed with the adhesive and then granulated; the nickel-based alloy powder includes nickel powder, chromium powder, copper powder, titanium powder and beryllium powder with different particle sizes; chromium not only has similar corrosion resistance and high temperature stability with nickel, but also has higher hardness and strength; the nickel-beryllium alloy has high fatigue strength and high elastic modulus, and the molecular weight of beryllium is small, which can better fill the gap between other metal powders and improve overall corrosion resistance and wear resistance. Among them, the nickel powder, chromium powder and copper powder are used as the base powder, and the particle size is distributed between 4.0-10.0 microns; the titanium powder and the beryllium powder are used as auxiliary powder, and the particle size is distributed between 0.5-2.0 microns. In this way, the auxiliary powder can be fully filled in the gap of the base powder, and various powders with different particle sizes are tightly stacked together, so that after high temperature sintering, the internal structure of the U-shaped ring is more uniform and dense, has high surface strength and corrosion resistance, and also has certain elastic performance. Preferably, the particle size of the nickel powder is 8.0-10.0 microns, the particle size of the chromium powder is 6.0-8.0 microns, and the particle size of the copper powder is 4.0-6.0 microns; the particle size of the titanium powder is 1.5-2.0 microns, the particle size of the beryllium powder is 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 double improvement of material and structure, it is further ensured that the valve can still guarantee good floating sealing effect during long-term use, and the service life of the valve is greatly improved.

[0091] S23, the granulated mixture is heated into a fluid material in the injection machine barrel, and is injected into a metal mold under a set injection pressure to form a preform.

[0092] S24, the preform is placed in an extraction liquid, and after the adhesive is removed, it is placed in a sintering furnace for high temperature sintering to obtain a valve seat ring.

[0093] In this embodiment, first, the two sides of the device are installed on the pipeline. During installation on the pipeline, soil or other impurities may be placed on the inner wall of the valve body 1, and the impurities will grow bacteria and other foreign matter for a long time on the inner wall of the pipeline, thereby polluting the medium in the pipeline and affecting the sealing performance of the valve.

[0094] Firstly, the electric telescopic rod 14 is started to make the electric telescopic rod 14 contract to the shortest state, and at this time, the first gear 19 is engaged with the sixth gear 49, and the spline strip 38 is limitedly and slidably connected in the third spline shaft sleeve 18. The motor 13 is started to make the second spline shaft 36, the fourth spline shaft sleeve 37, the spline strip 38 and the third spline shaft sleeve 18 rotate. At this time, the first rotating column 8 and the first bevel gear 32 are driven to rotate through the engagement of the third spline shaft sleeve 18 and the sixth gear 49 and the engagement of the sixth bevel gear 46 and the fifth bevel gear 45. At this time, the first bevel gear 32 is engaged with the second bevel gear 34 to make the second rotating column 33 and the threaded rod 29 rotate circumferentially. 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 the limiting action, and the first bearing seat 5 drives the first spline shaft sleeve 4 to move to one side. At this time, the third gear 35 and the second gear 26 are engaged with each other to drive the first spline shaft 7 and the first spline shaft sleeve 4 to rotate circumferentially. At this time, the plurality of cleaning installation plates 2 and the cleaning head 3 move to one side circumferentially, so that the cleaning head 3 removes the impurities on the inner wall of the left side of the valve body 1.

[0095] Then, the electric telescopic rod 14 is started again to make the electric telescopic rod 14 extend to the longest state, at this time, the seventh gear 50 is engaged with the sixth gear 49, and at this time, the spline strip 38 is limitedly and slidably connected in the second spline shaft sleeve 17. The motor 13 is started to make the second spline shaft 36, the fourth spline shaft sleeve 37, the spline strip 38 and the second spline shaft sleeve 17 rotate. At this time, the first rotating column 8 and the first bevel gear 32 are driven to rotate through the engagement of the seventh gear 50 and the sixth gear 49 and the engagement of the sixth bevel gear 46 and the fifth bevel gear 45. At this time, the first bevel gear 32 is engaged with the second bevel gear 34 to make the second rotating column 33 and the threaded rod 29 rotate circumferentially. 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 the limiting action, and the first bearing seat 5 drives the first spline shaft sleeve 4 to move to one side. At this time, the third gear 35 and the second gear 26 are engaged with each other to drive the first spline shaft 7 and the first spline shaft sleeve 4 to rotate circumferentially. At this time, the plurality of cleaning installation plates 2 and the cleaning head 3 move to one side circumferentially, so that the cleaning head 3 removes the impurities on the inner wall of the right side of the valve body 1.

[0096] The electric telescopic rod 14 is started to make the fourth gear 39 and the fifth gear 40 keep the engagement, at this time, the spline strip 38 is neither limitedly and slidably connected in the third spline shaft sleeve 18 nor limitedly and slidably connected in the second spline shaft sleeve 17. At this time, the motor 13 drives the second spline shaft 36, the fourth spline shaft sleeve 37 and the fourth gear 39 to rotate circumferentially. The fourth gear 39 is engaged with the fifth gear 40, the third bevel gear 43 is engaged with the fourth bevel gear 44, thereby driving the disc plate rotating shaft 20 to rotate, so that the disc plate 10 rotates to open and close the valve body 1.

[0097] The device is divided into three working states, which are respectively: cleaning foreign matter on the left inner wall of the valve body 1 working state, opening and closing the valve body 1 working state, and cleaning foreign matter on the right inner wall of the valve body 1 working state. Compared with the traditional three-station action, the corresponding power mechanism such as a motor and a motor circuit needs to be moved, and the movement of the motor circuit will cause the problem of short service life of the circuit. The device only needs to move the spline bar 38, so as to realize the automatic operation of the three stations, greatly prolong the service life and maintenance cost of the device.

[0098] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should be within the protection scope of the present application.

Claims

1. A U-cup metal seal butterfly valve characterized by, Include: Valve body (1), the disc plate (10) is installed in the valve body (1), the U-shaped ring metal valve seat ring (51) is arranged between the valve body (1) and the disc plate (10); The valve body (1) is rotatably connected with the disc plate rotating shaft (20), the disc plate rotating shaft (20) is fixedly connected with the disc plate (10), and is used for driving the disc plate (10) to open or close; Two groups of cleaning assemblies are arranged in the valve body (1), and are arranged on the two sides of the disc plate (10) respectively, and are used for removing foreign matters on the two inner walls of the valve body (1); The valve body (1) is further provided with a driving mechanism, the driving mechanism drives the two groups of cleaning assemblies to remove foreign matters on the two inner walls, and drives the disc plate rotating shaft (20) to rotate to make the disc plate (10) open or close; The cleaning assembly comprises a fifth bearing seat (25), a sixth bearing seat (31) and a fixed seat (27), the fifth bearing seat (25), the sixth bearing seat (31) and the fixed seat (27) are fixedly connected on the inner wall of the valve body (1), the fixed seat (27) and the sixth bearing seat (31) are rotatably connected with a threaded rod (29), 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 limitingly and slidably connected in a second limiting sliding groove (28) formed in the fixed seat (27), and one side of the first connecting strip (6) is fixedly connected with a first bearing seat (5); The second rotating column (33) is coaxial with the threaded rod (29) and is fixedly connected with the threaded rod (29), the outer wall of the second rotating column (33) is fixedly connected with a third gear (35) and a second bevel gear (34); The first spline shaft (7) is limitingly and rotatably connected on the fifth bearing seat (25), the outer wall of the first spline shaft (7) is limitingly and slidably connected with a first spline shaft sleeve (4), and the first spline shaft sleeve (4) is limitingly and rotatably connected in the first bearing seat (5); The outer wall of the first spline shaft (7) is fixedly connected with a second gear (26), and the second gear (26) is engaged with the third gear (35); The outer wall of the first spline shaft sleeve (4) is circumferentially distributed with a plurality of cleaning mounting plates (2), a plurality of cleaning heads (3) are fixedly connected to the side, away from the first spline shaft sleeve (4), of the plurality of cleaning mounting plates (2), the cleaning head (3) is matched with the inner wall of the valve body (1), and is used for cleaning the sundries on the inner wall of the valve body (1); 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). The first rotating mechanism comprises a box body (11), the top of the valve body (1) is fixedly connected with the box body (11), the inner wall of a cavity (12) in the box body (11) is rotatably connected with a second spline shaft (36), the outer wall of the second spline shaft (36) is limitingly and slidably connected with a fourth spline shaft sleeve (37), the outer wall of the fourth spline shaft sleeve (37) is circumferentially provided with a plurality of spline strips (38), and the outer wall of the fourth spline shaft sleeve (37) is fixedly connected with a fourth gear (39); a motor (13) is fixedly installed on the box body (11), and the power output end of the motor (13) is connected with the second spline shaft (36); The second rotating mechanism comprises a third spline shaft sleeve (18), the inner wall of the cavity (12) is limitingly and rotatably connected with the third spline shaft sleeve (18), the second spline shaft (36) is located at the center of the third spline shaft sleeve (18), and the second spline shaft (36) and the third spline shaft sleeve (18) are not in contact with each other, the second spline shaft (36) and the third spline shaft sleeve (18) are coaxial, and the outer wall of the third spline shaft sleeve (18) is fixedly connected with a first gear (19); The inner wall of the cavity (12) is fixedly connected with a fourth bearing seat (21), the fourth bearing seat (21) is limitingly and rotatably connected with a second spline shaft sleeve (17), the outer wall of the second spline shaft sleeve (17) is fixedly connected with a seventh gear (50), the second spline shaft sleeve (17) and the third spline shaft sleeve (18) are coaxial, 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 strips (38) are limitingly and slidably connected in the second spline shaft sleeve (17) or the third spline shaft sleeve (18).

2. A U-cup metal sealing butterfly valve according to claim 1, characterized in that The inner wall of the cavity (12) is fixedly connected with a seventh bearing seat (42), the seventh bearing seat (42) is limitingly and rotatably connected with a third rotating column (41), the two sides of the third rotating column (41) are respectively fixedly connected with a fifth gear (40) and a third bevel gear (43), and the fourth gear (39) and the fifth gear (40) are in mesh with each other; The fourth bevel gear (44) is fixedly connected to the part of the disc plate rotating shaft (20) located outside the valve body (1), and the third bevel gear (43) and the fourth bevel gear (44) are in mesh with each other.

3. A U-cup metal sealing butterfly valve according to claim 2, characterized in that, The valve body (1) is fixedly connected with two second bearing seats (9), the first rotating column (8) is limitingly and rotatably connected in the two second bearing seats (9), the top and bottom of the first rotating column (8) are respectively fixedly connected with a fifth bevel gear (45) and a first bevel gear (32), and the first bevel gear (32) and the second bevel gear (34) are in mesh with each other. Two eighth bearing seats (47) are fixedly connected in the cavity (12), fourth rotating columns (48) are rotationally connected in the eighth bearing seats (47), sixth gears (49) and sixth bevel gears (46) are fixedly connected to the two ends of the fourth rotating column (48), a fifth bevel gear (45) is fixedly connected to the top of the first rotating column (8), the fifth bevel gear (45) and the sixth bevel gear (46) are meshed with each other, one of the sixth gears (49) and the seventh gear (50) are meshed with each other, the other sixth gear (49) and the first gear (19) are meshed with each other.

4. The U-cup metal sealing butterfly valve according to claim 3, characterized in that, The left and right moving mechanism comprises a third bearing seat (15), the outer wall of the fourth spline shaft sleeve (37) is rotationally connected with the third bearing seat (15), the inner wall of the cavity (12) is fixedly connected with an electric telescopic rod (14), the third bearing seat (15) is slidingly connected in the first limiting sliding groove (16) formed in the inner wall of the cavity (12), and the electric telescopic rod (14) is fixedly connected with the third bearing seat (15).

5. A U-cup metal sealing butterfly valve according to claim 4, characterized in that A control box (22) is fixedly installed on the top of the box (11), a storage battery (23) and a control panel (24) are installed 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.

6. The U-cup metal sealing butterfly valve according to claim 1, characterized in that, The U-shaped ring metal valve seat ring (51) comprises a bottom and two supporting arms, the inner side of the supporting arm is opened at an angle larger than the outer side by 0-4 degrees, so that the wall thickness of the U-shaped ring gradually increases from the end to the bottom; the disc plate (10) is processed in a conical inclined cutting manner, and the U-shaped ring metal valve seat ring (51) and the disc plate (10) form an oval sealing surface when they are in contact, and form a multi-position sealing surface between 86-94 degrees.

7. A method of manufacturing a U-ring metal-seal butterfly valve using the U-ring metal-seal butterfly valve according to claim 5, characterized in that, It comprises: S1: the disc plate (10) is processed in a conical inclined cutting manner; S2: the U-shaped ring metal valve seat ring (51) is prepared by alloy powder high-temperature sintering; S3: a cleaning assembly, a driving mechanism and a control box (22) are prepared; S4: the disc plate rotating shaft (20) and the two first rotating columns (8) are installed on the valve body (1), and the shaft hole is filled and sealed; S5: the U-shaped ring metal valve seat ring (51) is assembled on the valve body (1); S6: at this time, the fifth bearing seat (25), the sixth bearing seat (31) and the fixed seat (27) of the cleaning assembly are installed on the inner wall of the valve body (1), the driving mechanism is installed on the outer wall of the valve body (1), and the driving mechanism and the cleaning assembly are structurally matched; S7: the storage battery (23) in the control box (22) is used to power the motor (13) and the electric telescopic rod (14), and the control panel (24) is used to control the operation of the motor (13) and the electric telescopic rod (14).

8. The method of claim 7, wherein the U-shaped metal seal butterfly valve is manufactured by the steps of: The alloy powder comprises nickel powder, chromium powder, copper powder, titanium powder and beryllium powder, the nickel powder, the chromium powder and the copper powder are used as the base powder, and the particle size distribution is between 4.0-10.0 microns; the titanium powder and the beryllium powder are used as auxiliary powder, and the particle size distribution is between 0.5-2.0 microns.

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