High pressure die casting stop valve

Abstract

The application belongs to the technical field of stop valves, and particularly relates to a high-pressure casting stop valve, which comprises a valve body, a flow guide plate arranged in the valve body, a valve hole arranged on the flow guide plate, a valve cover assembly fixedly connected to the upper end of the valve body, a rotating rod assembly threadedly connected in the valve cover assembly, a pressure rod assembly rotatably connected to the lower end of the rotating rod assembly, and the pressure rod assembly being slidably connected with the valve cover assembly. After the pressure rod assembly moves downward, the pressure rod assembly is pressed on the valve hole. Whether the pressure rod assembly moves upward or downward, the lower end of the pressure rod assembly moves straight upward or downward without rotation, and the lower end of the pressure rod assembly is in extrusion contact with the edge of the valve hole, so that the valve rod in the conventional stop valve is prevented from rotating, moving upward or downward, and rubbing against the edge of the valve hole, thereby avoiding the abrasion of the edge of the valve hole or the bottom of the valve rod after long-time use, and reducing the sealing performance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stop valves, and particularly relates to a high-pressure cast stop valve. BACKGROUND

[0002] In the existing stop valve, the valve rod rotates upward or downward, the lower end of the valve rod rubs against the edge of the valve hole, and the edge of the valve hole or the bottom of the valve rod is abraded after long-term use, thereby causing the sealing performance to decrease.

[0003] For example, a stop valve with patent application number CN201410052370.X includes a valve body, a valve cover and a valve rod, the valve body is provided with a valve seat, the valve rod is provided with a valve flap, the valve flap is connected with the valve seat, the valve flap includes a flap cover and a flap body, the valve rod is arranged in the flap cover and fixedly connected with the flap body, the other end of the flap body relative to the valve rod is fixedly connected with a flap plate, the flap body and the flap plate are detachably connected, an annular groove is arranged between the flap body and the flap plate, a first annular sealing element is arranged in the annular groove, the outer periphery of the first annular sealing element is connected with the valve seat, the first annular sealing element includes alternatingly overlapped steel gasket layers and soft gasket layers, and a second sealing element is fixedly arranged on the other end of the flap plate relative to the valve rod. However, the valve rod rubs against the edge of the valve hole when the valve rod is lowered and contacted with the valve hole, the edge of the valve hole or the bottom of the valve rod is abraded after long-term use, thereby causing the sealing performance to decrease. SUMMARY

[0004] The application aims to provide a high-pressure cast stop valve to solve the problems in the prior art, and the specific technical scheme is as follows.

[0005] A high-pressure cast stop valve includes a valve body, a guide plate is arranged in the valve body, a valve hole is arranged on the guide plate, a valve cover assembly is fixedly connected to the upper end of the valve body, a rotating rod assembly is threadedly connected in the valve cover assembly, a pressing rod assembly is rotatably connected to the lower end of the rotating rod assembly, and the pressing rod assembly is slidably connected with the valve cover assembly, and the pressing rod assembly is covered on the valve hole after being moved downward.

[0006] Further, the valve cover assembly includes a connecting pipe one, the connecting pipe one is fixed on the upper end of the valve body, a positioning disc is arranged on the bottom of the connecting pipe one, the positioning disc is slidably connected with the pressing rod assembly, a pressing cover is fixed on the upper end of the connecting pipe one, the pressing cover seals a filler one at the connecting position of the connecting pipe one and the rotating rod assembly, a supporting rod is fixed on the upper end of the pressing cover, the supporting rod is threadedly connected with the rotating rod assembly, and a reinforcing rib is arranged at the connecting position of the pressing cover and the supporting rod.

[0007] Further, the rotating rod assembly includes an upper rotating rod, a filler one is arranged at the rotating connecting position of the upper rotating rod and the connecting pipe one, the lower end of the upper rotating rod is rotatably connected with the pressing rod assembly, the middle part of the upper rotating rod is threadedly connected with the supporting rod, a hand wheel is fixed on the upper rotating rod, and scale lines are arranged on the outer surface of the upper part of the upper rotating rod.

[0008] Further, the pressure rod assembly comprises a lower pressure rod, the lower pressure rod is in sliding connection with the positioning disc, the lower end of the lower pressure rod is inserted into the valve disc, the valve disc is fixedly connected with the lower pressure rod through a fixing screw, the end of the fixing screw is hidden in a groove at the bottom of the valve disc, a plug cover is buckled in the groove at the bottom of the valve disc, an annular boss is arranged at the upper edge of the valve hole, and the side edge of the valve disc is attached to the annular boss after the valve disc moves downward.

[0009] Further, one side of the valve body is provided with a liquid inlet connecting assembly, the other side of the valve body is provided with a liquid outlet connecting assembly, the liquid outlet connecting assembly comprises a connecting pipe two, the connecting pipe two is fixed on the side surface of the valve body, a cross support one is arranged at the end of the connecting pipe two, one end of the cross support one is fixedly connected with a spring one, the other end of the spring one is fixedly connected with a limiting small ball one, a fixed pipe one is in sliding fit connection with the outer side of the connecting pipe two, a baffle disc is arranged at the end of the connecting pipe two, the fixed pipe one is in threaded connection with the water outlet pipe after the connecting pipe two is inserted into the water outlet pipe, a cross support two is fixedly arranged in the water outlet pipe, a push rod one is fixedly arranged on the cross support two, and the front end of the push rod one abuts against the small ball one.

[0010] Further, a rubber pad one is arranged between the connecting pipe two and the water outlet pipe, the middle part of the cross section of the rubber pad one is in an oval shape, part of the oval-shaped rubber pad one is arranged in the connecting pipe two, and part of the oval-shaped rubber pad one is arranged in the water outlet pipe.

[0011] Further, the liquid inlet connecting assembly comprises a connecting pipe three, the connecting pipe three is fixed on the side surface of the valve body, the connecting pipe three is inserted into the water inlet pipe, a rubber pad two is arranged at the connecting position of the connecting pipe three and the water inlet pipe, the water inlet pipe is in sliding fit connection with a fixed pipe three, and the fixed pipe three is in threaded connection with the connecting pipe three.

[0012] Further, a cross support four is arranged at the end of the water inlet pipe, one end of the cross support four is fixedly connected with a spring two, the other end of the spring two is fixedly connected with a limiting small ball two, a cross support three is fixedly arranged in the connecting pipe three, a push rod two is fixedly arranged on the cross support three, and the front end of the push rod two abuts against the limiting small ball two.

[0013] Further, a cleaning assembly is fixedly arranged at the lower end of the valve body, the cleaning assembly comprises a connecting pipe four, the connecting pipe four is fixedly arranged at the lower end of the valve body, a dustproof cover is inserted into the lower end of the connecting pipe four, the connecting pipe four is in sliding connection with an outer rod, a connecting disc is fixedly arranged at the upper end of the outer rod, two groups of supports are fixedly arranged at the upper end of the connecting disc, a bending rod is rotatably arranged at the upper end of each support, a brush assembly is arranged on the bending rod, the lower end of the bending rod is rotatably connected with a connecting rod, the lower end of the connecting rod is rotatably connected with a rotating disc, an inner rod is fixedly arranged at the lower end of the rotating disc, the inner rod is in sliding connection with the outer rod, the connecting disc is in sliding connection with the inner rod, and a pushing rod is fixedly arranged at the lower end of the outer rod.

[0014] Further, a filler three is arranged at the connecting position of the connecting pipe four and the outer rod, a filler two is arranged at the connecting position of the connecting disc and the inner rod, a clamping block is arranged on the inner rod, the clamping blocks are elastically arranged, the clamping blocks are clamped in clamping grooves on the outer rod, and bosses are arranged on the outer side of the outer rod.

[0015] The present application has the advantages of:

[0016] During use, fluid enters the valve body from one side of the valve body, passes through the valve hole below the flow guide plate, flows into the space above the flow guide plate, and then flows out from the other end of the valve body. By rotating the rotating rod assembly, the rotating rod assembly is screwed with the valve cover assembly, the rotating rod assembly moves downward, the rotating rod assembly drives the pressing rod assembly to move downward, the lower end cover of the pressing rod assembly is pressed on the valve hole, the valve hole is closed, and the flow of fluid is blocked. By rotating the rotating rod assembly in the opposite direction, the rotating rod assembly moves upward in the valve cover assembly, driving the pressing rod assembly to move upward, and the lower end of the pressing rod assembly is separated from the valve hole, so that fluid can flow through the valve hole. Whether the pressing rod assembly moves upward or downward, the lower end of the pressing rod assembly moves straight up and down without rotating, and is in extrusion contact with the edge of the valve hole, avoiding the rotation of the valve rod in the traditional stop valve, the upward or downward movement of the valve rod, and the friction between the lower end of the valve rod and the edge of the valve hole, which can cause wear of the edge of the valve hole or the bottom of the valve rod, resulting in a decrease in the sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The overall structure of the present application is shown Figure 1 ;

[0018] Figure 2 The overall structure of the present application is shown Figure 2 ;

[0019] Figure 3 The valve body structure of the present application is shown Figure 1 ;

[0020] Figure 4 The valve body structure of the present application is shown Figure 2 ;

[0021] Figure 5 The valve body structure of the present application is shown Figure 4 ;

[0022] Figure 6 The valve body structure of the present application is shown Figure 3 ;

[0023] Figure 7 The liquid outlet connecting assembly structure of the present application is shown Figure 1 ;

[0024] Figure 8 The liquid outlet connecting assembly structure of the present application is shown Figure 2 ;

[0025] Figure 9 The valve body structure of the present application is shown Figure 8 ;

[0026] Figure 10 The liquid inlet connecting assembly of the present application is shown Figure 1;

[0027] Figure 11 Schematic view of the liquid inlet connecting assembly of the present application Figure 2 ;

[0028] Figure 12 Schematic view of the cleaning assembly structure of the present application

[0029] Figure 13 Schematic view of the idle state structure of the cleaning assembly of the present application

[0030] Figure 14 Schematic view of the working state structure of the cleaning assembly of the present application

[0031] Figure 15 Schematic view of the working state structure of the cleaning assembly of the present application Figure 13 Enlarged view of the part C in the figure

[0032] Explanation of the marks in the figure:

[0033] Valve body 1; flow guide plate 2; valve hole 3; annular boss 4; valve disc 5; plug cover 6; fixing screw 7; pressing rod 8; positioning disc 9; connecting pipe 1 10; packing 1 1; gland 12; support rod 13; upper rotating rod 14; hand wheel 15; connecting pipe 2 16; cross bracket 1 17; spring 1 18; limiting small ball 1 19; fixing pipe 1 20; water outlet pipe 21; blocking disc 22; rubber pad 1 23; cross bracket 2 24; push rod 1 25; connecting pipe 3 26; water inlet pipe 27; fixing pipe 3 28; rubber pad 2 29; cross bracket 3 30; push rod 2 31; limiting small ball 2 32; spring 2 33; cross bracket 4 34; connecting pipe 4 35; dust cover 36; outer rod 37; connecting disc 38; bracket 39; push rod 40; inner rod 41; packing 2 42; rotating disc 43; connecting rod 44; bent rod 45; brush assembly 46; packing 3 47; boss 48; clamping block 49; clamping groove 50; scale line 51. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Example 1

[0037] like Figures 1-15 As shown, a high-pressure die-cast shut-off valve includes a valve body 1, a guide plate 2 inside the valve body 1, a valve hole 3 on the guide plate 2, a valve cover assembly fixedly connected to the upper end of the valve body 1, a rotating rod assembly internally threaded to the valve cover assembly, a pressure rod assembly rotatably connected to the lower end of the rotating rod assembly, the pressure rod assembly slidingly connected to the valve cover assembly, and after the pressure rod assembly moves down, the cover presses onto the valve hole 3.

[0038] The working principle of the above technical solution is as follows: During the use of the shut-off valve, the fluid enters the valve body 1 from one side, flows through the valve hole 3 from below the guide plate 2, flows into the upper part of the guide plate 2, and then flows out from the other end of the valve body 1. When the rotating rod assembly is rotated, the rotating rod assembly and the valve cover assembly rotate threadedly. The rotating rod assembly rotates and moves downward, which drives the pressure rod assembly to move downward. The lower end cover of the pressure rod assembly presses against the valve hole 3, sealing the valve hole 3 and blocking the flow of fluid.

[0039] Rotate the lever assembly in the opposite direction. The lever assembly rotates and moves upward within the valve cover assembly, which in turn moves the pressure rod assembly upward. The lower end of the pressure rod assembly separates from the valve hole 3, and the fluid can flow through the valve hole 3.

[0040] Whether the pressure rod assembly moves up or down, the lower end of the pressure rod assembly moves straight up and down without rotation, and makes a squeezing contact with the edge of the valve hole 3. This avoids the valve stem rotation seen in traditional gate valves. When the valve stem rotates and moves up or down, the lower end of the valve stem rubs against the edge of the valve hole 3, which can wear down the edge of the valve hole 3 or the bottom of the valve stem over time, resulting in a decrease in its sealing performance.

[0041] Example 2

[0042] like Figures 1-15As shown, the valve cover assembly comprises a connecting pipe I 10 fixed on the upper end of the valve body 1, the bottom of the connecting pipe I 10 is provided with a positioning disc 9, the positioning disc 9 is slidably connected with the pressure rod assembly, the upper end of the connecting pipe I 10 is fixed with a pressure cover 12, the pressure cover 12 seals the filler I 11 at the connecting position of the connecting pipe I 10 and the rotating rod assembly, the upper end of the pressure cover 12 is fixed with a support rod 13, the support rod 13 is threadedly connected with the rotating rod assembly, and the connecting position of the pressure cover 12 and the support rod 13 is provided with a reinforcing rib;

[0043] The rotating rod assembly comprises an upper rotating rod 14, the upper rotating rod 14 is provided with the filler I 11 at the rotating connecting position with the connecting pipe I 10, the lower end of the upper rotating rod 14 is rotatably connected with the pressure rod assembly, the middle part of the upper rotating rod 14 is threadedly connected with the support rod 13, the upper rotating rod 14 is fixed with a hand wheel 15, and the outer surface of the upper part of the upper rotating rod 14 is provided with scale lines 51;

[0044] The pressure rod assembly comprises a lower pressure rod 8, the lower pressure rod 8 is slidably connected with the positioning disc 9, the lower end of the lower pressure rod 8 is inserted into the valve disc 5, the valve disc 5 is fixedly connected with the lower pressure rod 8 through a fixing screw 7, the end of the fixing screw 7 is hidden in the groove in the bottom of the valve disc 5, the plug cover 6 is buckled on the groove in the bottom of the valve disc 5, and the upper edge of the valve hole 3 is provided with an annular boss 4; after the valve disc 5 moves downward, the side edge of the valve disc 5 is attached to the annular boss 4;

[0045] The working principle of the above technical scheme is as follows: rotating the hand wheel 15 drives the upper rotating rod 14 to rotate, drives the upper rotating rod 14 to rotate and descend in the support rod 13, the lower end of the upper rotating rod 14 extrudes the lower pressure rod 8 to move downward, the lower pressure rod 8 slides downward in the positioning disc 9, because the side surface of the lower pressure rod 8 is provided with a convex rib, the convex rib is clamped on the positioning disc 9, so that the lower pressure rod 8 does not rotate during the descending process, and drives the valve disc 5 to descend, because the inclination of the side edge of the valve disc 5 is consistent with the inclination of the edge of the annular boss 4, so that the valve disc 5 can be closely attached to the annular boss 4 after descending, thereby increasing the sealing property of the stop valve;

[0046] Rotating the hand wheel 15 in the reverse direction drives the upper rotating rod 14 to rotate upward in the support rod 13, drives the lower pressure rod 8 to move upward, drives the valve disc 5 to move upward, and separates the valve disc 5 from the annular boss 4, so that the fluid can flow through the valve hole 3, the outer surface of the upper part of the upper rotating rod 14 is provided with scale lines 51, the scale of the scale lines 51 exposed on the upper end of the support rod 13 can be used to adjust the opening degree between the valve disc 5 and the annular boss 4, and further control the flow rate of the fluid;

[0047] The rotating connecting position of the upper rotating rod 14 and the connecting pipe I 10 is provided with the filler I 11, which can effectively increase the sealing property;

[0048] The lower end of the lower pressure rod 8 is inserted into the valve disc 5, and at the same time, the fixing screw 7 passes through the lower end of the valve disc 5 and is threadedly connected and fixed at the lower end of the lower pressure rod 8, thereby further increasing the firmness between the lower pressure rod 8 and the valve disc 5;

[0049] The plug 6 seals the end of the fixing screw 7 in the groove at the bottom of the valve disc 5 to prevent mud and sand in the fluid from contaminating the cross-shaped pattern at the end of the fixing screw 7 and affecting the subsequent disassembly and installation of the fixing screw 7.

[0050] Valve disc 5 is a consumable part. When valve disc 5 needs to be replaced, remove the plug 6 and rotate the fixing screw 7 to remove it. Valve disc 5 can be separated from the lower pressure rod 8. Insert the new valve disc 5 into the bottom of the lower pressure rod 8 and fix it with the fixing screw 7. Then, re-fasten the plug 6 into the groove at the bottom of the valve disc 5 to complete the replacement of valve disc 5. Compared with the traditional one-piece valve stem, which requires the entire valve stem to be replaced, this solution only requires the replacement of valve disc 5, resulting in low replacement cost.

[0051] Example 3

[0052] like Figures 1-15 As shown, the valve body 1 has an inlet connection assembly on one side and an outlet connection assembly on the other side. The outlet connection assembly includes a second connecting pipe 16, which is fixed to the side of the valve body 1. A cross bracket 17 is provided at the end of the second connecting pipe 16. The cross bracket 17 is fixedly connected to one end of a spring 18. A limit ball 19 is fixed at the other end of the spring 18. A fixed pipe 20 is slidably connected to the outside of the second connecting pipe 16. A baffle 22 is provided at the end of the second connecting pipe 16. After the second connecting pipe 16 is inserted into the outlet pipe 21, the fixed pipe 20 is threadedly connected to the outlet pipe 21. A second cross bracket 24 is fixed inside the outlet pipe 21. A push rod 25 is fixed on the second cross bracket 24. The push rod 25 abuts against the ball 19.

[0053] A rubber pad 23 is provided between the connecting pipe 2 16 and the water outlet pipe 21. The cross-section of the rubber pad 23 is elliptical in the middle. Part of the elliptical rubber pad 23 is located inside the connecting pipe 2 16, and part of the elliptical rubber pad 23 is located inside the water outlet pipe 21.

[0054] The working principle of the above technical solution is as follows: When the valve body 1 is connected to the outlet pipe 21 through the connecting pipe 2 16, the fixing pipe 1 20 is slid on the connecting pipe 2 16 to the side near the cross bracket 17, and the end of the outlet pipe 21 is connected to the connecting pipe 2 16. At the same time, the front end of the push rod 1 25 pushes the limiting ball 19 to move, the limiting ball 1 19 separates from the inner boss 52, and the spring 1 18 is compressed, connecting the fixing pipe 1 20 to the outlet pipe 21 by threads. The rear end of the fixing pipe 1 20 abuts against the baffle plate. On 22, the front end of the fixed tube 20 rotates continuously with the thread of the outlet pipe 21, squeezing the rubber pad 23 to deform. Part of the elliptical rubber pad 23 is located inside the connecting tube 2 16, and part of the elliptical rubber pad 23 is located inside the outlet pipe 21, increasing the sealing performance. The fluid in the valve body 1 flows through the cross bracket 17, then through the gap between the inner wall of the connecting tube 2 16 and the limiting ball 19, and then through the cross bracket 24 to flow out. It is convenient and quick to install with the outlet pipe 21 without the need for screw fixing.

[0055] When it is necessary to separate from the outlet pipe 21, rotate the fixed pipe 20 in the opposite direction to separate the fixed pipe 20 from the outlet pipe 21. The push rod 25 separates from the limiting ball 19. Under the elastic force of the spring 18, the limiting ball 19 contacts the inner boss 52, which prevents the fluid from flowing out. The disassembly between the outlet pipe 21 and the outlet pipe 21 is convenient and quick. At the same time, the outlet pipe 21 can be disassembled when the shut-off valve is working normally to prevent the fluid from flowing out and simplify the operation.

[0056] Example 4

[0057] like Figures 1-15 As shown, the liquid inlet connection assembly includes a connecting pipe 26, which is fixed to the side of the valve body 1. The connecting pipe 26 is inserted into the water inlet pipe 27. A rubber pad 29 is provided at the connection between the connecting pipe 26 and the water inlet pipe 27. The water inlet pipe 27 is slidably connected to the fixed pipe 28, and the fixed pipe 28 is threadedly connected to the connecting pipe 26.

[0058] The end of the water inlet pipe 27 is provided with a cross bracket 4 34, which is fixedly connected to one end of the spring 2 33. The other end of the spring 2 33 is fixed with a limiting ball 2 32. A cross bracket 30 is fixed inside the connecting pipe 3 26. A push rod 2 31 is fixed on the cross bracket 3 30, and the front end of the push rod 2 31 abuts against the limiting ball 2 32.

[0059] The working principle of the above technical solution is as follows: When the valve body 1 is connected to the water inlet pipe 27 through the connecting pipe 26, the water inlet pipe 27 is connected to the connecting pipe 26. The push rod 31 pushes the limiting ball 32 to move backward, causing the limiting ball 32 to separate from the inner boss 53. This causes the spring 33 to be compressed, fixing the fixing pipe 28 to the connecting pipe 26 with threads. The rubber gasket 29 increases the sealing performance. The fluid in the water inlet pipe 27 passes through the cross bracket 34, then through the gap between the inner wall of the water inlet pipe 27 and the limiting ball 32, and then through the cross bracket 30 into the valve body 1.

[0060] When it is necessary to remove the inlet pipe 27, rotate the fixing pipe 3 28 to separate the fixing pipe 3 28 from the connecting pipe 3 26, and quickly pull out the inlet pipe 27. Under the elastic force of the cross bracket 4 34, the limiting ball 2 32 moves forward and contacts the inner boss 2 53, blocking the fluid in the inlet pipe 27 from entering the valve body 1.

[0061] When installing or disconnecting from the inlet pipe 27, it is not necessary to stop the fluid in the inlet pipe 27. When the inlet pipe 27 is separated from the connecting pipe 26, the limiting ball 32 blocks the fluid flow. After the inlet pipe 27 and the connecting pipe 26 are connected, the limiting ball 32 separates from the inner boss 53, and the fluid can flow. This reduces the risk of the inlet pipe 27 and the connecting pipe 26 being disconnected due to insecure installation, resulting in fluid leakage.

[0062] Example 5

[0063] like Figures 1-15 As shown, a cleaning assembly is fixed to the lower end of the valve body 1. The cleaning assembly includes a connecting pipe 35, which is fixed to the lower end of the valve body 1. A dust cover 36 is inserted into the lower end of the connecting pipe 35. The connecting pipe 35 is slidably connected to the outer rod 37. A connecting plate 38 is fixed to the upper end of the outer rod 37. Two sets of brackets 39 are fixed to the upper end of the connecting plate 38. A bent rod 45 is rotatably connected to the upper end of each of the two sets of brackets 39. A brush assembly 46 is provided on the bent rod 45. The lower end of the bent rod 45 is rotatably connected to the connecting rod 44. The lower end of the connecting rod 44 is rotatably connected to the turntable 43. An inner rod 41 is fixed to the lower end of the turntable 43. The inner rod 41 slides inside the outer rod 37. The connecting plate 38 is slidably connected to the inner rod 41. A lever 40 is fixed to the lower end of the outer rod 37.

[0064] The connection between the connecting pipe 35 and the outer rod 37 is sealed with filler 47, and the connection between the connecting plate 38 and the inner rod 41 is sealed with filler 42. The inner rod 41 is provided with a locking block 49, which has a certain elasticity. The locking block 49 is locked in the locking groove 50 on the outer rod 37. The outer rod 37 is provided with a boss 48 on the outside.

[0065] The working principle of the above technical solution: After long-term use, impurities will adhere to the edge of the valve hole 3, the annular boss 4 and the valve disc 5, affecting the sealing performance after the two are fitted together.

[0066] The cleaning components clean the edge of the valve hole 3, the annular boss 4, and the valve disc 5. The valve disc 5 is raised to maintain a certain distance from the annular boss 4. The lever 40 is pushed up, which drives the outer rod 37 to rise, which drives the connecting plate 38 and the bracket 39 to rise, which drives the bent rod 45 and the brush assembly 46 to rise. When the brush assembly 46 reaches the edge of the valve hole 3, the inner rod 41 is pulled down, which drives the locking block 49 to move down in the locking groove 50, which drives the turntable 43 to move down, which drives the two connecting rods 44 to move down, which drives the two bent rods 45 to rotate. The upper ends of the two bent rods 45 expand outward, which drives the two brush assemblies 46 to press against the edge of the valve hole 3. At this time, the lever 40 is rotated, which drives the outer rod 37, the connecting plate 38, and the bracket 39 to rotate, which drives the connecting rod 44 and the bent rod 45 to rotate, which drives the two brush assemblies 46 to clean the impurities at the edge of the valve hole 3.

[0067] Continue to push the push rod 40, so that the boss 48 on the outer rod 37 against the lower end of the connecting tube four 35, at this time two brush assembly 46 located above the valve hole 3, pull down the inner rod 41, drive the block 49 in the card slot 50 down, drive the turntable 43 down, drive two connecting rods 44 down, drive two curved rods 45 rotate, two curved rods 45 continue to expand the upper end outward, drive two brush assembly 46 outward expansion, pull down the outer rod 37, drive two brush assembly 46 down, two brush assembly 46 outside and annular boss 4 contact, at this time rotate the push rod 40, drive the outer rod 37, connecting disc 38, bracket 39 rotate, drive connecting rod 44 and curved rod 45 rotate, drive two brush assembly 46 to clean the impurities on the edge of the annular boss 4;

[0068] The valve disc 5 is lowered, the side edge of the valve disc 5 contacts the inner side of the two brush assemblies 46, at this time rotate the push rod 40, drive the outer rod 37, connecting disc 38, bracket 39 rotate, drive connecting rod 44 and curved rod 45 rotate, drive two brush assembly 46 to clean the impurities on the side of the valve disc 5;

[0069] The diameter edge of the valve hole 3, the annular boss 4 and the valve disc 5 are cleaned conveniently and quickly, and the sealing property of the stop valve is improved;

[0070] The filler two 42 and the filler three 47 ensure the sealing property of the cleaning assembly during use;

[0071] When the cleaning assembly is not used, the connecting disc 38, the bracket 39 and the push rod 40 and the like are moved down into the connecting tube four 35, without affecting the flow of fluid;

[0072] The brush assembly 46 is composed of a soft plate with attached bristles, and the soft plate is fixed on the curved rod 45 through screws at both ends.

[0073] It can be understood that the present application is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope of protection of the present application.

Claims

1. A high pressure casting stop valve characterized by, The utility model provides a valve, including valve body (1), be equipped with guide vane (2) in valve body (1), be equipped with valve hole (3) on guide vane (2), valve body (1) upper end fixedly connected with valve cover subassembly, the screw connection of valve cover subassembly is in the rotation link of pressure lever subassembly with the lower end of rotary rod subassembly, pressure lever subassembly and valve cover subassembly slidingly connected, after pressure lever subassembly lower removal, cover and press in valve hole (3) on; The valve body (1) lower end is fixed with a cleaning assembly, the cleaning assembly includes a connecting pipe four (35), the connecting pipe four (35) is fixed on the lower end of the valve body (1), the dust cover (36) is inserted into the lower end of the connecting pipe four (35), the connecting pipe four (35) is slidably connected with an outer rod (37), the outer rod (37) is fixedly connected with a connecting disc (38) on the upper end, the connecting disc (38) is fixedly connected with two groups of supports (39) on the upper end, the two groups of supports (39) are rotatably connected with a bent rod (45) on the upper end, the bent rod (45) is provided with a brush assembly (46), the bent rod (45) is rotatably connected with a connecting rod (44) on the lower end, the connecting rod (44) is rotatably connected with a rotating disc (43) on the lower end, the rotating disc (43) is fixedly connected with an inner rod (41) on the lower end, the inner rod (41) is slidably arranged in the outer rod (37), the connecting disc (38) is slidably connected with the inner rod (41), and the outer rod (37) is fixedly connected with a push rod (40) on the lower end. The connecting pipe four (35) and the outer rod (37) are connected with a filler three (47), the connecting disc (38) and the inner rod (41) are connected with a filler two (42), the inner rod (41) is provided with a clamping block (49), the clamping block (49) is elastic, the clamping block (49) is clamped in the clamping groove (50) on the outer rod (37), and the outer rod (37) is provided with a boss (48) on the outer side.

2. A high pressure die casting shut-off valve according to claim 1, characterized in that The valve cover subassembly includes a connecting pipe one (10), the connecting pipe one (10) is fixed on the upper end of the valve body (1), the connecting pipe one (10) is provided with a positioning disc (9) on the bottom, the positioning disc (9) is slidably connected with the pressure lever subassembly, the connecting pipe one (10) is fixedly connected with a pressing cover (12) on the upper end, the pressing cover (12) seals the filler one (11) at the connecting position of the connecting pipe one (10) and the rotary rod subassembly, the pressing cover (12) is fixedly connected with a supporting rod (13) on the upper end, the supporting rod (13) is threadedly connected with the rotary rod subassembly, and the pressing cover (12) and the supporting rod (13) are provided with a reinforcing rib at the connecting position.

3. A high pressure die casting shut-off valve according to claim 2, characterised in that The rotary rod subassembly includes an upper rotary rod (14), the upper rotary rod (14) is provided with a filler one (11) at the rotary connecting position with the connecting pipe one (10), the upper rotary rod (14) is rotatably connected with the pressure lever subassembly on the lower end, the upper rotary rod (14) is threadedly connected with the supporting rod (13) on the middle part, the upper rotary rod (14) is fixedly connected with a hand wheel (15), and the upper rotary rod (14) is provided with a scale line (51) on the outer surface of the upper part.

4. A high pressure die casting shut-off valve according to claim 3, characterised in that The pressure rod assembly includes a lower pressure rod (8) which is in sliding connection with a positioning disc (9), the lower pressure rod (8) is inserted into a valve disc (5) at the lower end, the valve disc (5) is fixedly connected with the lower pressure rod (8) through a fixing screw (7), the end of the fixing screw (7) is hidden in a groove at the bottom of the valve disc (5), a plug cover (6) is buckled in the groove at the bottom of the valve disc (5), an annular boss (4) is arranged at the upper edge of the valve hole (3), and the side edge of the valve disc (5) is attached to the annular boss (4) after the valve disc (5) is moved downward.

5. A high pressure die casting shut-off valve according to claim 1, characterized in that One side of the valve body (1) is provided with a liquid inlet connecting assembly, and the other side of the valve body (1) is provided with a liquid outlet connecting assembly, the liquid outlet connecting assembly comprises a connecting pipe two (16), the connecting pipe two (16) is fixed on the side surface of the valve body (1), the end of the connecting pipe two (16) is provided with a cross bracket one (17), the cross bracket one (17) is fixedly connected with one end of a spring one (18), the other end of the spring one (18) is fixedly connected with a limiting small ball one (19), a fixed pipe one (20) is in sliding fit connection with the outer side of the connecting pipe two (16), the end of the connecting pipe two (16) is provided with a blocking disc (22), after the connecting pipe two (16) is inserted into a water outlet pipe (21), the fixed pipe one (20) is in threaded connection with the water outlet pipe (21), the cross bracket two (24) is fixedly connected with the water outlet pipe (21), the cross bracket two (24) is fixedly connected with a push rod one (25), and the front end of the push rod one (25) abuts against the small ball one (19).

6. A high pressure die casting shut-off valve according to claim 5, characterised in that A rubber pad one (23) is arranged between the connecting pipe two (16) and the water outlet pipe (21), the middle part of the cross section of the rubber pad one (23) is oval, part of the oval rubber pad one (23) is located in the connecting pipe two (16), and part of the oval rubber pad one (23) is located in the water outlet pipe (21).

7. A high pressure die casting shut-off valve according to claim 5, wherein The liquid inlet connecting assembly comprises a connecting pipe three (26), the connecting pipe three (26) is fixed on the side surface of the valve body (1), the connecting pipe three (26) is inserted into a water inlet pipe (27), and the connecting pipe three (26) is provided with a rubber pad two (29) at the connecting position of the water inlet pipe (27).

8. A high pressure die casting shut-off valve according to claim 7, characterized in that The end of the water inlet pipe (27) is provided with a cross bracket four (34), the cross bracket four (34) is fixedly connected with one end of a spring two (33), the other end of the spring two (33) is fixedly connected with a limiting small ball two (32), the cross bracket three (30) is fixedly connected in the connecting pipe three (26), the cross bracket three (30) is fixedly connected with a push rod two (31), and the front end of the push rod two (31) abuts against the limiting small ball two (32).

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