Wear-resistant and impurity-free filter diaphragm valve

Abstract

The present invention discloses an anti-wear and impurity-free filter diaphragm valve, which belongs to the technical field of diaphragm valves. In the present invention, it includes a connecting pipe, the outer wall of the connecting pipe is connected to a fixed pipe, the inner wall of the fixed pipe is provided with a thread, and the inner thread of the fixed pipe is connected to a valve body, the top of the valve body is rotatably connected with a knob, the inner wall of the knob is connected with an extrusion screw, and a lubrication device is provided in the extrusion screw, and the lubrication device includes two movable plates, an oil outlet groove and an oil storage groove, and the two sides of the oil outlet groove are respectively connected with a sealing block and a sealing plate; in the present invention, by rotating the knob, the knob drives the extrusion screw to rotate, and then the extrusion screw is lowered, and when the first sealing ball contacts the valve body during continuous lowering, the first sealing ball is squeezed and retracted, and then one side of the first sealing ball is separated from the sealing block, and then the lubricating oil in the oil outlet groove flows out, and then the outer wall of the extrusion screw is lubricated, and then the wear of the outer wall of the extrusion screw is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of diaphragm valves, and in particular relates to an anti-wear and impurity-free filtering diaphragm valve. Background Art

[0002] The diaphragm valve is a stop valve that uses a diaphragm as an opening and closing member to close the flow channel, cut off the fluid, and separate the valve body cavity from the valve cover cavity. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is mostly made of plastic, fiberglass, ceramic or metal rubber-lined materials. It has a simple structure, good sealing and corrosion resistance, and low fluid resistance. It is used for low-pressure, low-temperature, highly corrosive media and media containing suspended matter. According to the structural form, it can be divided into ridge type, stop type, gate type, etc.

[0003] Chinese application number: CN201110341565.2 The invention discloses a diaphragm valve, comprising a valve body, a material inlet is arranged on the wall of the valve body, and a first open end is provided at the bottom; a valve cover, a gas source interface is arranged on the wall of the valve body, and a second open end is provided at the top of the valve cover, a valve cap is screwed on the second open end, the valve cover is arranged on the valve body, and a cavity is formed between the valve body and the valve seat; a valve seat is arranged at the first open end of the valve body; a valve core mechanism, one end of which extends out from the second open end of the valve cover, and the other end is slidably arranged on the valve seat; and a diaphragm is arranged in the cavity and is drivingly connected to the valve core mechanism. The diaphragm divides the cavity into an upper gas source chamber and a lower material chamber, the gas source chamber is connected to the gas source interface, and the material chamber is connected to the material inlet. However, in actual use, it is necessary to frequently rotate the internal threaded rod. Since the interior of the valve body is in a sealed state, the threaded rod cannot be lubricated for a long time, and wear or rust occurs, thereby affecting the normal use of the device. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the inside of the valve body cannot be lubricated, and to propose an anti-wear and impurity-free filtering diaphragm valve.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an anti-wear and impurity-free filtered diaphragm valve, comprising a connecting pipe, the outer wall of the connecting pipe is connected to a fixed pipe, the inner wall of the fixed pipe is provided with a thread, and the inner thread of the fixed pipe is connected to a valve body, the top of the valve body is rotatably connected to a knob, the inner wall of the knob is connected to an extrusion screw, a lubrication device is provided in the extrusion screw, the lubrication device comprises two movable plates, an oil outlet groove and an oil storage groove, the two sides of the oil outlet groove are respectively connected to a sealing block and a sealing plate, and the sides of the two movable plates away from each other are respectively connected to a first sealing ball and a second sealing ball, and sliding sleeves are embedded on both sides of the two movable plates, and the same first sliding rod is slidably connected in the two corresponding sliding sleeves, and the two first sliding rods are both sleeved with a second spring at one end, and the same first spring is connected between the two movable plates, one side of the oil outlet groove is connected to a connecting groove, and one side of the connecting groove is connected to one side of the oil storage tank.

[0006] As a further description of the above technical solution: One side of the first sealing ball is in contact with one side of the sealing block, one side of the second sealing ball is in contact with one side of the sealing plate, two ends of the first sliding rod are respectively connected to one side of the sealing plate and one side of the sealing block, two ends of the second spring are respectively connected to one side of the sealing plate and one side of the moving plate close to the second sealing ball, and the oil storage tank and the oil outlet tank are both opened in the extrusion screw.

[0007] As a further description of the above technical solution: The top of the oil storage tank is connected with a feeding tank, the feeding tank is arranged in the extrusion screw, and the top of the feeding tank is threadedly connected with a sealing bolt.

[0008] As a further description of the above technical solution: A conduit is provided through the two movable plates, and the conduit is welded to a movable plate close to the first sealing ball. A flow channel is provided through the second sealing ball. The conduit extends into the flow channel and is connected with the connecting groove through the flow channel. A sealing ring for sealing with the inner wall of the flow channel is provided on the outer periphery of the conduit. A rolling groove is provided at the end of the first sealing ball away from the second sealing ball. The rolling groove is connected with the conduit. A liquid outlet ball is provided on the rolling groove for rolling. A plurality of oil storage recesses are evenly provided on the surface of the liquid outlet ball. A limiting flange extending inwardly for limiting the liquid outlet ball on the fixed groove is provided at a position of the first sealing ball corresponding to the outer end of the rolling groove. Part of the liquid outlet ball is exposed outside the rolling groove. A disc spring and a gasket are also provided in the rolling groove. The gasket is provided between the disc spring and the liquid outlet ball.

[0009] As a further description of the above technical solution: Sealing grooves are provided on both sides of the connecting pipe, and sealing rings are inserted in the two sealing grooves, and one side of the two sealing rings is connected to an external tube, one side of the external tube is fitted with one side of the connecting pipe, and the outer wall of the external tube and the outer wall of the connecting pipe are provided with fixing grooves, and the connecting pipe and the outer wall of the external tube are provided with the same connecting device.

[0010] As a further description of the above technical solution: The connecting device includes a first fixed arc ring, a second fixed arc ring is hinged on one side of the first fixed arc ring, a fixed plate is connected to the same side of the first fixed arc ring and the second fixed arc ring, and two slots are respectively provided on the top of the two fixed plates, and rotation grooves are provided on both sides of the inner wall of the slot provided on one of the fixed plates, and the same rotating rod is rotatably connected between the two rotating grooves, a screw is connected to the outer wall of the rotating rod, a nut is threadedly connected to one end of the screw, and two fixed rings are connected to the inner wall of the first fixed arc ring and the inner wall of the second fixed arc ring.

[0011] As a further description of the above technical solution: The two fixing rings are respectively engaged with the fixing grooves on the outer wall of the connecting pipe and the outer wall of the external pipe, and the inner wall of the first fixing arc ring and the inner wall of the second fixing arc ring are both in contact with the outer wall of the connecting pipe and the outer wall of the external pipe.

[0012] As a further description of the above technical solution: An extrusion block is connected to the bottom of the extrusion screw, a sealing rubber is fitted to the bottom of the extrusion block, the bottom of the sealing rubber is fitted to the inside of the fixed tube, and the top of the sealing rubber is fitted to the bottom of the valve body, and two second buckles are connected to the bottom of the sealing rubber, the inner wall of the connecting tube is connected to a truncation block, and two disassembly devices are provided on the top of the fixed tube.

[0013] As a further description of the above technical solution: The disassembly device includes a built-in groove and two fixed blocks, the bottom of the built-in groove is connected to a toggle groove, and sliding sleeves are embedded in the two fixed blocks, and the same second sliding rod is slidably connected in the two sliding sleeves, third springs are sleeved on both ends of the second sliding rod, and one side of the two fixed blocks is connected to a toggle rod, and one side of the opposite surface of the two fixed blocks is connected to a first buckle.

[0014] As a further description of the above technical solution: The two ends of the second slide bar are respectively connected to the two sides of the inner wall of the toggle slot, the two ends of the third spring are respectively connected to one side of the fixed block and one side of the inner wall of the toggle slot, and the built-in slot is opened at the top of the fixed tube, and the toggle slot is opened on one side of the fixed plate.

[0015] As a further description of the above technical solution: The second buckle extends into the built-in groove, and two sides of the second buckle are respectively engaged with one side of the two first buckles.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, by turning the knob, the knob drives the extrusion screw to rotate, thereby causing the extrusion screw to descend. When the extrusion screw continues to descend, one side of the first sealing ball contacts the valve body, thereby causing the first sealing ball to be squeezed and retracted, thereby causing one side of the first sealing ball to separate from the sealing block, thereby causing the lubricating oil in the oil outlet groove to flow out, thereby lubricating the outer wall of the extrusion screw, thereby reducing the wear of the outer wall of the extrusion screw, and thereby increasing the service life of the device.

[0017] 2. In the present invention, by moving the first fixed arc ring, one side of the first fixed arc ring and one side of the second fixed arc ring are fitted together, so that the fixed ring is clamped into the fixing groove, and then the nut is moved so that the nut drives the screw to rotate through the rotating rod, so that one side of the nut is fitted with one side of the fixing plate on the other side, and finally the nut is rotated to fix the two fixing plates to each other, thereby quickly connecting and fixing the connecting pipe and the external pipe, thereby realizing rapid installation of the device and improving installation work efficiency.

[0018] 3. In the present invention, by pushing two levers, the levers drive the two fixing blocks to move outward, thereby disengaging the first buckle from the second buckle, taking out the damaged sealing rubber, pressing the new sealing rubber, causing the second buckle to squeeze the first buckle, thereby causing the fixing block to squeeze the third spring, and then the elastic force of the third spring causes the fixing block to reset, thereby causing the first buckle to re-fix the second buckle, thereby replacing and fixing the sealing rubber, thereby making the device maintenance more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of the wear-resistant and impurity-free filter diaphragm valve proposed by the present invention; Figure 2 It is a front view cross-sectional structural schematic diagram of the wear-resistant and impurity-free filter diaphragm valve proposed by the present invention; Figure 3 The invention provides a wear-resistant and impurity-free filter diaphragm valve. Figure 2 The enlarged structural diagram of part A in the middle; Figure 4 for Figure 3 A schematic diagram of a structure in which a liquid outlet ball is added to the structure; Figure 5 This is a schematic diagram of the structure of the connection device of the wear-resistant and impurity-free filter diaphragm valve proposed by the present invention; Figure 6 This is a schematic diagram of the sealing rubber structure of the wear-resistant and impurity-free filter diaphragm valve proposed by the present invention; Figure 7 This is a schematic diagram of the fixed pipe structure of the wear-resistant and impurity-free filter diaphragm valve proposed by the present invention; Figure 8 This is a schematic structural diagram of the disassembly device for the wear-resistant and impurity-free filter-type diaphragm valve proposed by the present invention.

[0020] Legend: 1. Knob; 2. Fixed pipe; 3. Valve body; 4. Connecting pipe; 5. External pipe; 6. Connecting device; 601. Nut; 602. Screw; 603. Rotating rod; 604. Fixed plate; 605. First fixed arc ring; 606. Fixed ring; 607. Second fixed arc ring; 608. Slot; 609. Rotating groove; 7. Lubricating device; 701. Feeding groove; 702. Oil storage groove; 703. Sealing block; 704. First sealing ball; 705. First spring; 706. Oil outlet groove; 707. First sliding rod; 708. Sealing plate; 709. Connecting groove; 710. Second sealing ball; 711. moving plate; 712. second spring; 713. conduit; 714. flow channel; 715. sealing ring; 716. rolling groove; 717. liquid outlet ball; 718. oil storage recess; 719. limiting flange; 720. disc spring; 721. gasket; 8. disassembly device; 801. fixing block; 802. lever; 803. second slide bar; 804. third spring; 805. first buckle; 9. extrusion screw; 10. truncation block; 11. extrusion block; 12. sealing rubber; 13. built-in groove; 14. sealing ring; 15. sealing groove; 16. fixing groove; 17. second buckle; 18. toggle groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-8The present invention provides a technical solution: an anti-wear and non-impurity filtering diaphragm valve, comprising a connecting pipe 4, the outer wall of the connecting pipe 4 is connected to a fixed pipe 2, the inner wall of the fixed pipe 2 is provided with a thread, and the inner thread of the fixed pipe 2 is connected to a valve body 3, the top of the valve body 3 is rotatably connected to a knob 1, the inner wall of the knob 1 is connected to an extrusion screw 9, and a lubricating device 7 is provided in the extrusion screw 9, the lubricating device 7 comprises two movable plates 711, an oil outlet groove 706 and an oil storage groove 702, the two sides of the oil outlet groove 706 are respectively connected to a sealing block 703 and a sealing plate 708, and the two sides of the two movable plates 711 are respectively connected to a first sealing ball 704 and a second sealing ball 710, and sliding sleeves are embedded on both sides of the two movable plates 711, and the same first sliding rod 707 is slidably connected in the two corresponding sliding sleeves, and one end of the two first sliding rods 707 is sleeved with a first Two springs 712, and the same first spring 705 is connected between the two movable plates 711, one side of the oil outlet groove 706 is connected to the connecting groove 709, one side of the connecting groove 709 is connected to the side of the oil storage groove 702, one side of the first sealing ball 704 is in contact with the side of the sealing block 703, one side of the second sealing ball 710 is in contact with the side of the sealing plate 708, the two ends of the first sliding rod 707 are respectively connected to one side of the sealing plate 708 and one side of the sealing block 703, the two ends of the second spring 712 are respectively connected to one side of the sealing plate 708 and one side of the movable plate 711 close to the second sealing ball 710, the oil storage groove 702 and the oil outlet groove 706 are both opened in the extrusion screw 9, the top of the oil storage groove 702 is connected to the feeding groove 701, the feeding groove 701 is opened in the extrusion screw 9, and the top of the feeding groove 701 is threadedly connected with a sealing bolt.

[0023] The specific implementation method is as follows: by setting the lubrication device 7, when the device is not in use, the elastic force of the second spring 712 causes the second spring 712 to drive one of the movable plates 711 to move, thereby causing the second sealing ball 710 on one side of the movable plate 711 to separate from one side of the sealing plate 708, thereby connecting the oil outlet groove 706 and the connecting groove 709, thereby causing the lubricating oil in the oil storage groove 702 to flow into the oil outlet groove 706. When in use, by turning the knob 1, the knob 1 drives the extrusion screw 9 to rotate, and the extrusion screw 9 is lowered through the thread. When one side of the first sealing ball 704 contacts the valve body 3, the first sealing ball 704 is retracted, thereby causing the first sealing ball 704 to retract. The first sealing ball 704 drives the movable plate 711 to move, so that one side of the first sealing ball 704 is separated from the sealing block 703, so that the lubricating oil in the oil outlet groove 706 flows out, and then the outer wall of the extrusion screw 9 is lubricated. Through the first spring 705, when the device is not in use, the first sealing ball 704 is always in contact with the sealing block 703 through the force of the first spring 705, so as to prevent the internal lubricating oil from flowing out. By setting the feeding groove 701, the lubricating oil in the oil storage tank 702 can be filled through the feeding groove 701 when it is used up, so that the device can be used for a long time, and the sealing bolt is used to prevent the internal lubricating oil from flowing out.

[0024] As a preferred configuration, a conduit 713 is provided through the two movable plates 711, and the conduit 713 is welded to a movable plate 711 close to the first sealing ball 704, a flow channel 714 is provided through the second sealing ball 710, the conduit 713 extends into the flow channel 714 and is connected to the connecting groove 709 through the flow channel 714, a sealing ring 715 for forming a sealing fit with the inner wall of the flow channel 714 is provided on the outer periphery of the conduit 713, a rolling groove 716 is provided at one end of the first sealing ball 704 away from the second sealing ball 710, The rolling groove 716 is connected with the conduit 713, and a liquid outlet ball 717 is rollingly arranged on the rolling groove 716, and a plurality of oil storage recesses 718 are evenly arranged on the surface of the liquid outlet ball 717. The first sealing ball 704 is provided with a limiting flange 719 extending inwardly for limiting the liquid outlet ball 717 on the fixed groove 16 at a position corresponding to the outer end of the rolling groove 716. The liquid outlet ball 717 is partially exposed outside the rolling groove 716. A disc spring 720 and a gasket 721 are also arranged in the rolling groove 716, and the gasket 721 is arranged between the disc spring 720 and the liquid outlet ball 717. The liquid outlet ball 717 structure is provided, and when it cooperates with the inner wall of the valve body 3, it is a rolling cooperation, which greatly reduces friction. At the same time, during its rolling process, the oil storage recess 718 on the liquid outlet ball 717 will bring the lubricating oil to the surface of the valve body 3, thereby increasing the lubrication effect.

[0025] Both sides of the connecting pipe 4 are provided with sealing grooves 15, and sealing rings 14 are inserted in the two sealing grooves 15, and one side of the two sealing rings 14 is connected to the external pipe 5, one side of the external pipe 5 is in contact with one side of the connecting pipe 4, and the outer wall of the external pipe 5 and the outer wall of the connecting pipe 4 are provided with fixing grooves 16, and the outer walls of the connecting pipe 4 and the external pipe 5 are provided with the same connecting device 6, the connecting device 6 includes a first fixing arc ring 605, one side of the first fixing arc ring 605 is hinged with a second fixing arc ring 607, the first fixing arc ring 605 and the second fixing arc ring 607 are connected to a fixing plate 604 on the same side, and the tops of the two fixing plates 604 are respectively provided with two slots 608, and A slot 608 opened on one of the fixed plates 604 has rotating slots 609 on both sides of its inner wall, and a rotating rod 603 is rotatably connected between the two rotating slots 609, a screw 602 is connected to the outer wall of the rotating rod 603, a nut 601 is threadedly connected to one end of the screw 602, two fixing rings 606 are connected to the inner wall of the first fixing arc ring 605 and the inner wall of the second fixing arc ring 607, and the two fixing rings 606 are respectively clamped with the fixing slot 16 opened on the outer wall of the connecting pipe 4 and the fixing slot 16 opened on the outer wall of the external tube 5, and the inner wall of the first fixing arc ring 605 and the inner wall of the second fixing arc ring 607 are both in contact with the outer wall of the connecting pipe 4 and the outer wall of the external tube 5.

[0026] The specific implementation method is as follows: by setting the connecting device 6, by shifting the first fixed arc ring 605, the first fixed arc ring 605 is separated from the second fixed arc ring 607, and then the fixing ring 606 is clamped into the fixing groove 16 of the outer wall of the connecting pipe 4 and the external pipe 5, and then by shifting the first fixed arc ring 605, one side of the first fixed arc ring 605 and one side of the second fixed arc ring 607 are fitted together, so that the two fixing plates 604 are fitted together, and then the nut 601 is shifted so that the nut 601 drives the screw 602 is rotated by rotating the rotating rod 603 so that one side of the nut 601 fits with one side of the fixing plate 604 on the other side, and finally the nut 601 is rotated so that the two fixing plates 604 are fixed to each other, thereby fixing one side of the first fixing arc ring 605 and the second fixing arc ring 607, and then connecting and fixing the connecting pipe 4 and the external pipe 5, making the connection more convenient and quick. At the same time, by setting a sealing ring 14 to be inserted into the sealing groove 15, the sealing between the connecting pipe 4 and the external pipe 5 is improved to prevent the internal liquid from flowing out.

[0027] The bottom of the extrusion screw 9 is connected to an extrusion block 11, and a sealing rubber 12 is attached to the bottom of the extrusion block 11. The bottom of the sealing rubber 12 is attached to the inside of the fixed tube 2, and the top of the sealing rubber 12 is attached to the bottom of the valve body 3, and the bottom of the sealing rubber 12 is connected to two second buckles 17. The inner wall of the connecting tube 4 is connected to a truncation block 10. Two disassembly devices 8 are provided on the top of the fixed tube 2. The disassembly devices 8 include a built-in groove 13 and two fixed blocks 801. The bottom of the built-in groove 13 is connected to a toggle groove 18, and sliding sleeves are embedded in the two fixed blocks 801, and the same second sliding rod 803 is slidably connected in the two sliding sleeves. The second slide bar 803 is sleeved with a third spring 804 at both ends, and the two fixed blocks 801 are connected to the lever 802 on one side, and the first buckle 805 is connected to the opposite side of the two fixed blocks 801. The two ends of the second slide bar 803 are respectively connected to the two sides of the inner wall of the toggle groove 18, and the two ends of the third spring 804 are respectively connected to one side of the fixed block 801 and one side of the inner wall of the toggle groove 18. The built-in groove 13 is opened at the top of the fixed tube 2, and the toggle groove 18 is opened on one side of the fixed plate 604. The second buckle 17 extends into the built-in groove 13, and the two sides of the second buckle 17 are respectively clamped with one side of the two first buckles 805.

[0028] The specific implementation method is as follows: by setting a disassembly device 8, by moving the two levers 802, the levers 802 drive the two fixing blocks 801 to move outward, thereby disengaging the first clip 805 from the second clip 17, thereby causing the first clip 805 to lose its fixing effect on the second clip 17, and then taking out the damaged sealing rubber 12, pressing a new sealing rubber 12, squeezing the first clip 805 through the second clip 17, so that the two fixing blocks 801 move away from each other, and after moving to the desired position, the fixing block 801 is reset through the elastic force of the third spring 804, so that the first clip 805 re-fixes the second clip 17, and then the sealing rubber 12 is replaced, and at the same time, the first clip 805 and the second clip 17 are clamped and fixed, thereby fixing the sealing rubber 12, so as to avoid the sealing rubber 12 from being offset due to pressure during use, thereby affecting the sealing effect.

[0029] Working principle: When in use, by moving the first fixed arc ring 605, one side of the first fixed arc ring 605 and one side of the second fixed arc ring 607 fit together, and then move the nut 601, so that the nut 601 drives the screw 602 to move, and then the screw 602 drives the rotating rod 603 to rotate, and then one side of the nut 601 fits with the side of the fixed plate 604 that is away from each other, and finally rotate the nut 601 to tighten the screw 602 in the nut, so that the two fixed plates 604 are tightly fitted and fixed, and then the connecting pipe 4 and the external pipe 5 are quickly connected. When the device is not working, the elastic force of the second spring 712 makes the second spring 712 drive one of the moving plates 711 to move, and then the moving plate 711 drives the second sealing ball 710 to separate from one side of the sealing plate 708, so that the lubricating oil in the oil storage tank 702 flows into and out of the oil tank 706. At the same time, the first spring 705 is used to make the first sealing ball 704 is tightly against the sealing block 703 to prevent the lubricating oil from flowing out when not in use. When in use, the extruding screw 9 descends, and when one side of the first sealing ball 704 contacts the valve body 3, the first sealing ball 704 shrinks, and then one side of the first sealing ball 704 is separated from the sealing block 703, so that the lubricating oil in the oil groove 706 flows out, and then the outer wall of the extruding screw 9 is lubricated. When the sealing rubber 12 is damaged during long-term use, the lever 802 is moved so that the lever 802 drives the two fixing blocks 801 to move outward, so that the first clip 805 is separated from the second clip 17, and then the damaged sealing rubber 12 is taken out, and a new sealing rubber 12 is pressed, so that the second clip 17 squeezes the two first clips 805, so that the third spring 804 generates a rebound force, and then the first clip 805 is re-engaged with the second clip 17, and then the new sealing rubber 12 is fixed, so as to improve the maintenance efficiency of the device.

[0030] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant, impurity-free filter diaphragm valve, comprising a connecting pipe (4), characterized in that: The outer wall of the connecting pipe (4) is connected to a fixed pipe (2), the inner wall of the fixed pipe (2) is provided with a thread, and the inner thread of the fixed pipe (2) is connected to a valve body (3), the top of the valve body (3) is rotatably connected to a knob (1), the inner wall of the knob (1) is connected to an extrusion screw (9), a lubricating device (7) is provided inside the extrusion screw (9), the lubricating device (7) comprises two movable plates (711), an oil outlet groove (706) and an oil storage groove (702), the two sides of the oil outlet groove (706) are respectively connected to a sealing block (703) and a sealing plate (708), and the two movable plates (711) are connected to the oil outlet groove (706). The first sealing ball (704) and the second sealing ball (710) are respectively connected to the sides of the plates (711) that are away from each other, and sliding sleeves are embedded on both sides of the two movable plates (711), and the same first sliding rod (707) is slidably connected in the two corresponding sliding sleeves, and one end of the two first sliding rods (707) is sleeved with a second spring (712), and the same first spring (705) is connected between the two movable plates (711), and one side of the oil outlet groove (706) is connected to a connecting groove (709), and one side of the connecting groove (709) is connected to one side of the oil storage groove (702).

2. The wear-resistant and impurity-free filter diaphragm valve according to claim 1 is characterized in that: One side of the first sealing ball (704) is in contact with one side of the sealing block (703), one side of the second sealing ball (710) is in contact with one side of the sealing plate (708), two ends of the first sliding rod (707) are respectively connected to one side of the sealing plate (708) and one side of the sealing block (703), two ends of the second spring (712) are respectively connected to one side of the sealing plate (708) and one side of the movable plate (711) close to the second sealing ball (710), and the oil storage tank (702) and the oil outlet tank (706) are both provided in the extrusion screw (9).

3. The wear-resistant and impurity-free filter diaphragm valve according to claim 1 is characterized in that: The top of the oil storage tank (702) is connected to a feeding tank (701), the feeding tank (701) is disposed in the extrusion screw (9), and a sealing bolt is threadedly connected to the top of the feeding tank (701).

4. The wear-resistant and impurity-free filter diaphragm valve according to claim 1 is characterized in that: The connecting pipe (4) is provided with sealing grooves (15) on both sides, and sealing rings (14) are inserted into the two sealing grooves (15), and one side of the two sealing rings (14) is connected to an external pipe (5), one side of the external pipe (5) is in contact with one side of the connecting pipe (4), the outer wall of the external pipe (5) and the outer wall of the connecting pipe (4) are provided with fixing grooves (16), and the outer walls of the connecting pipe (4) and the external pipe (5) are provided with the same connecting device (6).

5. The wear-resistant and impurity-free filter diaphragm valve according to claim 4 is characterized in that: The connecting device (6) comprises a first fixed arc ring (605), a second fixed arc ring (607) being hingedly connected to one side of the first fixed arc ring (605), a fixed plate (604) being connected to the same side of the first fixed arc ring (605) and the second fixed arc ring (607), two slots (608) being respectively provided on the top of the two fixed plates (604), and rotation slots (609) being provided on both sides of the inner wall of the slot (608) provided on one of the fixed plates (604), and a same rotation rod (603) being rotationally connected between the two rotation slots (609), a screw (602) being connected to the outer wall of the rotation rod (603), a nut (601) being threadedly connected to one end of the screw (602), and two fixed rings (606) being connected to the inner wall of the first fixed arc ring (605) and the inner wall of the second fixed arc ring (607).

6. The wear-resistant and impurity-free filter diaphragm valve according to claim 5 is characterized in that: The two fixing rings (606) are respectively engaged with the fixing groove (16) provided on the outer wall of the connecting pipe (4) and the fixing groove (16) provided on the outer wall of the external pipe (5), and the inner wall of the first fixing arc ring (605) and the inner wall of the second fixing arc ring (607) are both in contact with the outer wall of the connecting pipe (4) and the outer wall of the external pipe (5).

7. The wear-resistant and impurity-free filter diaphragm valve according to claim 1, characterized in that: The bottom of the extrusion screw (9) is connected to an extrusion block (11), the bottom of the extrusion block (11) is fitted with a sealing rubber (12), the bottom of the sealing rubber (12) is fitted with the inside of the fixed tube (2), and the top of the sealing rubber (12) is fitted with the bottom of the valve body (3), and the bottom of the sealing rubber (12) is connected to two second buckles (17), the inner wall of the connecting tube (4) is connected to a truncation block (10), and the top of the fixed tube (2) is provided with two disassembly devices (8).

8. The wear-resistant and impurity-free filter diaphragm valve according to claim 7, characterized in that: The disassembly device (8) comprises a built-in groove (13) and two fixed blocks (801), the bottom of the built-in groove (13) is connected to a toggle groove (18), and a sliding sleeve is embedded in the two fixed blocks (801), and the two sliding sleeves are slidably connected to the same second sliding rod (803), both ends of the second sliding rod (803) are sleeved with a third spring (804), one side of the two fixed blocks (801) is connected to a toggle rod (802), and one side of the opposite surface of the two fixed blocks (801) is connected to a first buckle (805).

9. The wear-resistant and impurity-free filter diaphragm valve according to claim 8, characterized in that: The two ends of the second slide bar (803) are respectively connected to the two sides of the inner wall of the toggle slot (18), the two ends of the third spring (804) are respectively connected to one side of the fixed block (801) and one side of the inner wall of the toggle slot (18), and the built-in slot (13) is provided at the top of the fixed tube (2), and the toggle slot (18) is provided at one side of the fixed plate (604).

10. The wear-resistant and impurity-free filter diaphragm valve according to claim 7, characterized in that: The second buckle (17) extends into the built-in groove (13), and two sides of the second buckle (17) are respectively engaged with one side of the two first buckles (805).

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