Anti-erosion float collar float shoe mechanism

Abstract

The utility model discloses an anti-erosion float collar float shoe mechanism, improved the technical problem of the edge position of valve plate being eroded by liquid medium for a long time and appearing wear and tear. The anti-erosion float collar float shoe mechanism, including outer cylinder and upper anti-backflow component, upper anti-backflow component includes: upper outer valve body, coaxial setting in the outer cylinder, valve plate, setting in the upper outer valve body, first sealing surface, setting on the inner wall of upper outer valve body, second sealing surface, setting on the outer edge position of valve plate, and can cooperate with first sealing surface and seal, valve control component, coaxial sliding sets up in the upper outer valve body, and is used for controlling valve plate and moving to the opening or closing position along the vertical direction, protection component, setting on the valve control component, when valve plate moves to the opening position downward, protection component can partially obstruct second sealing surface. The utility model can reduce the risk of the edge position of valve plate appearing erosion wear and tear, thereby the sealing performance and service life of float collar float shoe.

Description

Technical Field

[0001] This utility model belongs to the field of floating hoop and floating shoe technology, specifically relating to an anti-erosion floating hoop and floating shoe mechanism. Background Technology

[0002] Floaters and floats are cementing components commonly used in the drilling industry. They are usually installed at the lower end of the casing and tubing, mainly to prevent backflow.

[0003] The float hoop and float shoe in related technologies usually include an outer cylinder and an anti-backflow component installed in the outer cylinder. After long-term use, the edge of the valve plate in the anti-backflow component is easily worn due to the continuous erosion of the water flow, which reduces the sealing performance and service life of the float hoop and float shoe, and needs to be improved. Utility Model Content

[0004] In order to solve all or some of the above problems, the purpose of this utility model is to provide an anti-erosion float hoop and float shoe mechanism, which can reduce the risk of erosion and wear at the edge of the valve plate, thereby improving the sealing performance and service life of the float hoop and float shoe.

[0005] This utility model provides an anti-erosion buoyancy hoop and float shoe mechanism, including an outer cylinder. The anti-erosion buoyancy hoop and float shoe mechanism further includes an upper anti-backflow component disposed within the outer cylinder. The upper anti-backflow component includes:

[0006] The upper outer valve body is coaxially disposed within the outer cylinder;

[0007] A valve plate is disposed within the upper outer valve body;

[0008] The first sealing surface is disposed on the inner wall of the upper outer valve body;

[0009] The second sealing surface is located at the outer edge of the valve plate and can cooperate with the first sealing surface to seal.

[0010] A valve control assembly is coaxially slidably disposed within the upper outer valve body and is used to control the valve plate to move vertically to the open or closed position;

[0011] A protective component is disposed on the valve control component;

[0012] When the valve plate moves downward to the open position, the protective component can partially block the second sealing surface.

[0013] Optionally, the protective component includes:

[0014] A limiting plate is arranged parallel above the valve plate and connected to the valve control assembly, and a limiting guide groove is formed between the limiting plate and the valve plate;

[0015] A support ring is disposed within the limiting guide groove and connected to the valve control assembly;

[0016] Multiple protective plates are arranged around the support ring. Each of the multiple protective plates can slide radially along the support ring. Each of the multiple protective plates is fan-shaped. When the valve plate moves upward to the closed position, the multiple protective plates abut against each other and form a ring-shaped protective structure.

[0017] A first guide spring is used to control the movement of the plurality of protective plates toward a direction away from the support ring, so that the plurality of protective plates respectively block the corresponding positions of the second sealing surface.

[0018] Optionally, each of the protective plates is provided with a third sealing surface at its outer edge, and when the valve plate moves upward to the closed position, the third sealing surface can cooperate with the first sealing surface to seal.

[0019] The inner wall of the upper outer valve body is provided with a guide slope located below the first sealing surface, and the protective plate can move smoothly toward the support ring under the guidance of the guide slope.

[0020] Optionally, the valve control assembly includes:

[0021] The protective sleeve is coaxially and slidably disposed within the upper outer valve body;

[0022] A fixing rod is fixedly connected to the inner wall of the protective cylinder;

[0023] A valve stem passes through the fixed rod and slides vertically with the fixed rod, and the bottom of the valve stem is fixedly connected to the valve plate;

[0024] A spring-driven assembly is disposed on the valve stem and the fixed rod, and is used to control the upward movement of the valve stem;

[0025] A spring reset assembly is disposed on the protective cylinder and the upper outer valve body, and is used to control the upward movement of the protective cylinder;

[0026] When the valve plate moves downward to the open position, the protective cylinder can block the first sealing surface.

[0027] Optionally, the spring return assembly includes:

[0028] The outer edge of the guide is coaxially disposed on the outer wall of the protective cylinder;

[0029] A guide groove is provided on the inner wall of the protective cylinder, and the outer edge of the guide groove is vertically slidably engaged with the guide groove;

[0030] The second guide spring is disposed on the outer edge of the guide and the protective cylinder, and is used to control the upward movement of the outer edge of the guide.

[0031] Optionally, the valve stem can also rotate along its own axis, and the outer cylinder and the valve stem are provided with control components for controlling the rotation of the valve stem.

[0032] Optionally, the control element includes:

[0033] A control blade is located at the upper end of the valve stem;

[0034] A guide vane is coaxially disposed inside the outer cylinder and located above the upper outer valve body;

[0035] Flow guide holes are provided on the flow guide plate;

[0036] The liquid medium flowing downward through the guide hole can impact the control blade, causing the control blade to drive the valve stem to rotate.

[0037] Optionally, the anti-erosion float hoop and float shoe mechanism further includes a lower anti-backflow component disposed in the outer cylinder. The lower anti-backflow component is located below the upper outer valve body and is used to block the liquid medium from flowing from bottom to top.

[0038] Optionally, the lower anti-backflow component includes:

[0039] The lower outer valve body is coaxially disposed within the outer cylinder;

[0040] The valve cylinder assembly is disposed within the lower outer valve body;

[0041] A sealing plate is sealed to the inner wall of the valve cylinder assembly;

[0042] A flow passage is provided on the sealing plate;

[0043] A sealing ball is movably disposed within the valve cylinder assembly and located below the sealing plate;

[0044] A spring-driven push assembly is disposed within the valve cylinder assembly and is used to push the sealing ball upward so that the sealing ball closes the flow hole.

[0045] Optionally, the valve cylinder assembly includes:

[0046] A sealing cylinder, with its opening facing upwards, is slidably disposed coaxially within the lower outer valve body. The sealing plate is sealed to the inner wall of the sealing cylinder. The sealing ball and the spring push assembly are respectively disposed within the sealing cylinder.

[0047] A through hole is provided at the lower end of the sealing cylinder, and when the sealing cylinder moves downward to the open position, the through hole is exposed below the lower outer valve body;

[0048] A third guide spring is disposed on the sealing cylinder and the lower outer valve body, and is used to push the sealing cylinder upward to the closed position so that the lower outer valve body closes the through hole.

[0049] As can be seen from the above technical solution, the anti-erosion buoyancy hoop and floating shoe mechanism provided by this utility model has the following advantages:

[0050] This anti-erosion float hoop and float shoe mechanism uses protective components to shield and protect the edge of the valve plate, that is, to partially shield the second sealing surface, reducing the risk of liquid medium eroding the second sealing surface over a long period of time, effectively reducing the risk of erosion and wear on the second sealing surface, thereby improving the sealing performance and service life of the float hoop and float shoe.

[0051] Other features and advantages of this invention will be set forth in the following description. Attached Figure Description

[0052] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0053] Figure 1 This is an overall sectional view of an embodiment of the present utility model;

[0054] Figure 2 This is a cross-sectional view of the upper anti-backflow component in an embodiment of the present invention;

[0055] Figure 3 This is a cross-sectional view of the upper outer valve body in an embodiment of this utility model;

[0056] Figure 4 This is a cross-sectional view of the valve control assembly in an embodiment of the present invention;

[0057] Figure 5 This is a top view of the protective component in an embodiment of the present invention;

[0058] Figure 6 This is a cross-sectional view of the valve stem in an embodiment of this utility model;

[0059] Figure 7 This is a cross-sectional view of the lower anti-backflow component in an embodiment of the present invention;

[0060] Figure 8 This is a cross-sectional view of the valve cylinder assembly in an embodiment of the present utility model;

[0061] Figure 9 This is a schematic diagram of the usage state of an embodiment of the present invention, showing the state when the upper anti-backflow component is turned on;

[0062] Figure 10 This is a schematic diagram of the usage state of an embodiment of the present invention, showing the state when the upper anti-backflow component and the lower anti-backflow component are respectively turned on;

[0063] Figure 11 This is a schematic diagram of the usage state of an embodiment of the present invention, showing the state when the upper anti-backflow component and the lower anti-backflow component are respectively closed.

[0064] Explanation of reference numerals in the attached figures:

[0065] 1. Outer cylinder; 2. Upper anti-backflow assembly; 21. Upper outer valve body; 22. Valve plate; 23. First sealing surface; 24. Second sealing surface; 25. Valve control assembly; 251. Protective cylinder; 252. Fixing rod; 253. Valve stem; 254. Sliding hole; 255. Spring drive assembly; 2551. Fixing nut; 2552. Support washer; 2553. Drive spring; 256. Spring return assembly; 2561. Guide outer edge; 2562. Guide groove; 2563. Second guide spring; 2564. Second guide rod; 2565. Second guide groove; 2566. Second spring; 26. Protective assembly; 261. Limiting plate; 262. Support ring; 263. Limiting guide groove; 264. Protective plate 265. First guide spring component; 266. First guide rod; 267. First guide groove; 268. First spring; 269. Third sealing surface; 3. Lower anti-backflow assembly; 31. Lower outer valve body; 32. Valve cylinder assembly; 321. Sealing cylinder; 322. Through hole; 323. Third guide spring component; 3231. Third guide rod; 3232. Third guide groove; 3233. Third spring; 33. Sealing plate; 34. Flow hole; 35. Sealing ball; 36. Spring push assembly; 361. Support block; 362. Support groove; 363. Push rod; 364. Push spring; 365. Compression spring; 4. Guide slope; 5. Control component; 51. Control blade; 52. Guide plate; 53. Guide hole. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0067] like Figures 1-11The illustration shows an embodiment of the present invention, which discloses an anti-erosion buoyancy shield mechanism. This mechanism includes a vertically arranged outer cylinder 1, which has a cylindrical structure. An upper anti-backflow component 2 and a lower anti-backflow component 3 are disposed inside the outer cylinder 1. The lower anti-backflow component 3 is located below the upper anti-backflow component 2, and both components are used to prevent the liquid medium from flowing from bottom to top, thus restricting the liquid medium to only enter from the upper port and exit from the lower port of the outer cylinder 1.

[0068] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the upper anti-backflow assembly 2 includes an upper outer valve body 21, a valve plate 22, a first sealing surface 23, and a second sealing surface 24. The upper outer valve body 21 has a cylindrical structure and is coaxially and sealed and fixedly connected to the outer cylinder 1. In this embodiment, the upper outer valve body 21 is threadedly connected to the outer cylinder 1.

[0069] The valve plate 22 has a circular plate structure and is coaxially arranged inside the upper outer valve body 21. The first sealing surface 23 is arranged on the inner wall of the upper outer valve body 21, and the second sealing surface 24 is arranged at the outer edge of the valve plate 22. After the valve plate 22 moves upward, the second sealing surface 24 can cooperate with the first sealing surface 23 to seal, so as to close the upper anti-backflow assembly 2.

[0070] In one embodiment, such as Figure 1 , Figure 2 As shown, the upper anti-backflow assembly 2 also includes a valve control assembly 25 and a protection assembly 26. The valve control assembly 25 is coaxially slidably disposed inside the upper outer valve body 21, and the valve control assembly 25 is used to control the valve plate 22 to move vertically to the open or closed position.

[0071] The protective component 26 is disposed on the valve control component 25. When the valve plate 22 moves downward to the open position, the protective component 26 can partially block the second sealing surface 24, thereby achieving the protection of the second sealing surface 24 and reducing the risk of the second sealing surface 24 being eroded by the liquid medium for a long time.

[0072] In this embodiment, "coaxial sliding" means that the two components are coaxially arranged and the sliding component can move along its own axis. "Valve plate 22 moves to the open position" means that the valve plate 22 moves to the point where the second sealing surface 24 is completely separated from the first sealing surface 23. "Valve plate 22 moves to the open position" means that the valve plate 22 moves to the point where the second sealing surface 24 and the first sealing surface 23 are tightly sealed.

[0073] In this embodiment, the anti-erosion floating hoop and floating shoe mechanism uses the protective component 26 to shield and protect the edge of the valve plate 22, that is, to partially shield the second sealing surface 24, thereby reducing the risk of the liquid medium eroding the second sealing surface 24 for a long time and effectively reducing the risk of erosion and wear on the second sealing surface 24, thus improving the sealing performance and service life of the floating hoop and floating shoe.

[0074] In one embodiment, such as Figure 2 , Figure 4 , Figure 5 As shown, the protective component 26 includes a limiting plate 261 and a support ring 262. The limiting plate 261 is arranged parallel above the valve plate 22 and is fixedly connected to the valve control component 25. A limiting guide groove 263 is formed between the limiting plate 261 and the valve plate 22. The support ring 262 is disposed within the limiting guide groove 263 and is fixedly connected to the valve control component 25.

[0075] In one embodiment, such as Figure 2 , Figure 4 , Figure 5 As shown, the protective assembly 26 also includes multiple fan-shaped protective plates 264, which surround the support ring 262 and slide radially along the support ring 262. Simultaneously, when the valve plate 22 moves upward to the closed position, the multiple protective plates 264 abut against each other and form a ring-shaped protective structure.

[0076] In this embodiment, four protective plates 264 are provided. In other embodiments, three, six, or eight plates may also be provided, depending on the actual situation. This will not be shown in detail here.

[0077] In one embodiment, such as Figure 4 , Figure 5 As shown, the protective assembly 26 also includes a first guide spring 265, which is used to control the multiple protective plates 264 to move synchronously in a direction away from the support ring 262, so that the multiple protective plates 264 respectively block the corresponding positions of the second sealing surface 24.

[0078] In this embodiment, when the liquid medium enters the upper outer valve body 21, the valve control assembly 25 and valve plate 22 move downwards synchronously until the valve plate 22 moves to the open position. Simultaneously, multiple protective plates 264 move away from the support ring 262 and shield the corresponding positions of the second sealing surface 24. That is, during the use of the anti-erosion floating hoop and floating shoe mechanism, almost all the liquid medium impacts the protective plates 264, thereby reducing the risk of the liquid medium eroding the second sealing surface 24.

[0079] In one embodiment, such as Figure 4 , Figure 5As shown, the first guide spring component 265 includes a plurality of first guide rods 266, a plurality of first guide grooves 267 and a plurality of first springs 268. The plurality of first guide rods 266 are respectively fixed on the support ring 262, the plurality of first guide grooves 267 are correspondingly disposed on the corresponding protective plates 264, and the plurality of first guide rods 266 are slidably connected to the corresponding first guide grooves 267.

[0080] Multiple first springs 268 are correspondingly disposed in corresponding first guide grooves 267, and one end of the first spring 268 is fixedly connected to the corresponding protective plate 264 and the other end is fixedly connected to the corresponding first guide rod 266. The first spring 268 is used to push the protective plate 264 to move away from the support ring 262.

[0081] In one embodiment, such as Figure 4 , Figure 5 As shown, each protective plate 264 has a third sealing surface 269 at its outer edge. When the valve plate 22 moves upward to the closed position, the third sealing surface 269 and the first sealing surface 23 cooperate to seal. At the same time, the second sealing surface 24 also cooperates with the first sealing surface 23 to seal. The double sealing design can improve the sealing effect and make the upper anti-backflow component 2 close stably.

[0082] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the inner wall of the upper outer valve body 21 is provided with a guide slope 4 located below the first sealing surface 23, and the protective plate 264 can move smoothly toward the support ring 262 under the guidance of the guide slope 4, so that multiple protective plates 264 can be smoothly retracted, reducing the risk of the protective plate 264 getting stuck, thereby improving the stability of use.

[0083] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the valve control assembly 25 includes a protective cylinder 251, a fixing rod 252, and a valve stem 253. The protective cylinder 251 has a cylindrical structure and is coaxially slidably disposed inside the upper outer valve body 21. The fixing rod 252 is horizontally disposed on the inner wall of the protective cylinder 251, with both ends of the fixing rod 252 fixedly connected to the protective cylinder 251, and a sliding hole 254 penetrating through the center of the fixing rod 252. The valve stem 253 passes through the sliding hole 254 and forms a vertical sliding engagement with the fixing rod 252. At the same time, the bottom of the valve stem 253 is coaxially fixedly connected to the valve plate 22.

[0084] When the valve plate 22 moves downward to the open position, the protective sleeve 251 can block the first sealing surface 23, thereby achieving effective protection of the first sealing surface 23, reducing the risk of erosion and wear of the first sealing surface 23, and thus extending its service life.

[0085] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the valve control assembly 25 also includes a spring drive assembly 255 and a spring return assembly 256. The spring drive assembly 255 is disposed on the valve stem 253 and the fixed rod 252, and is used to control the upward movement of the valve stem 253. The spring return assembly 256 is disposed on the protective cylinder 251 and the upper outer valve body 21, and is used to control the upward movement of the protective cylinder 251. Simultaneously, under the combined action of the spring drive assembly 255 and the spring return assembly 256, the valve plate 22 can smoothly move upward to the closed position, and the second sealing surface 24 and the first sealing surface 23 can quickly abut and seal.

[0086] In one embodiment, such as Figure 4 , Figure 6 As shown, the spring drive assembly 255 includes a fixing nut 2551, a support washer 2552, and a drive spring 2553. The fixing nut 2551 is sleeved and fixed on the valve stem 253, and the fixing nut 2551 is located above the fixing rod 252. The support washer 2552 is sleeved on the valve stem 253, and the support washer 2552 is fixedly connected to the fixing rod 252.

[0087] The drive spring 2553 is sleeved on the valve stem 253. The drive spring 2553 is located between the fixing nut 2551 and the support washer 2552. The top end of the drive spring 2553 abuts against the fixing nut 2551, and the bottom end is fixedly connected to the support washer 2552. The drive spring 2553 is used to push the fixing nut 2551 to move upward.

[0088] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the spring reset assembly 256 includes a guide outer edge 2561, a guide groove 2562, and a second guide spring 2563. The guide outer edge 2561 is coaxially and integrally formed and connected to the outer wall of the protective cylinder 251. The guide groove 2562 is disposed on the inner wall of the protective cylinder 251, and the guide outer edge 2561 and the guide groove 2562 are vertically slidingly engaged. The second guide spring 2563 is disposed on the guide outer edge 2561 and the upper outer valve body 21, and the second guide spring 2563 is used to control the upward movement of the guide outer edge 2561.

[0089] In one embodiment, such as Figure 2 , Figure 3 , Figure 4As shown, the second guide spring 2563 includes a plurality of second guide rods 2564, a plurality of second guide grooves 2565, and a plurality of second springs 2566. The plurality of second guide rods 2564 are respectively fixed to the bottom of the guide outer edge 2561, and the plurality of second guide grooves 2565 are respectively disposed on the bottom inner wall of the guide groove 2562, and the plurality of second guide rods 2564 are respectively vertically slidably connected to the corresponding second guide grooves 2565.

[0090] Multiple second springs 2566 are correspondingly disposed in corresponding second guide grooves 2565. One end of the second spring 2566 is fixedly connected to the corresponding second guide rod 2564, and the other end is fixedly connected to the upper outer valve body 21. The second spring 2566 is used to push the corresponding second guide rod 2564 to move upward.

[0091] In one embodiment, such as Figure 1 , Figure 4 , Figure 6 As shown, the sliding hole 254 is a circular hole, and the valve stem 253 is a cylindrical structure that can rotate along its own axis. Meanwhile, control components 5 are provided on the outer cylinder 1 and the valve stem 253 to control the rotation of the valve stem 253. Since the valve stem 253 can drive the valve plate 22 to rotate, it can throw out any residual medium on the valve plate 22, improving sealing performance. Additionally, it can accelerate the flow of medium, thereby improving efficiency.

[0092] In one embodiment, such as Figure 1 , Figure 6 As shown, the control component 5 includes a control blade 51, a guide plate 52, and a guide hole 53. The control blade 51 is spiral and fixedly connected to the upper end of the valve stem 253. The guide plate 52 is coaxially and sealed and fixedly connected to the inner cylinder 1, and the guide plate 52 is located above the upper outer valve body 21. In this embodiment, the guide plate 52 is threadedly connected to the outer cylinder 1.

[0093] The guide hole 53 is disposed through the guide plate 52. The guide hole 53 is divided into upper and lower parts. The upper part is a flared structure and the lower part is an oblique hole structure. The valve stem 253 is located on one side of the lower port of the guide hole 53 so that the liquid medium flowing downward through the guide hole 53 can impact the control blade 51, so that the control blade 51 can drive the valve stem 253 to rotate.

[0094] In one embodiment, such as Figure 1 , Figure 7 As shown, the lower anti-backflow assembly 3 includes a lower outer valve body 31 and a valve cylinder assembly 32. The lower outer valve body 31 has a cylindrical structure and is coaxially and sealed within the outer cylinder 1. In this embodiment, the lower outer valve body 31 is threadedly connected to the outer cylinder 1.

[0095] In one embodiment, such as Figure 1 , Figure 7 As shown, the lower anti-backflow assembly 3 also includes a sealing plate 33, a flow passage 34, a sealing ball 35, and a spring-push assembly 36. The sealing plate 33 is fixedly connected to the inner wall of the valve cylinder assembly 32, and the flow passage 34 is disposed through the center of the sealing plate 33. The sealing ball 35 is movably disposed within the valve cylinder assembly 32 and is located below the sealing plate 33. The spring-push assembly 36 is disposed within the valve cylinder assembly 32 and is used to push the sealing ball 35 upward so that the sealing ball 35 closes the flow passage 34.

[0096] In this embodiment, the sealing plate 33, the sealing ball 35, and the spring push assembly 36 together constitute a one-way valve structure. When the liquid medium flows from top to bottom, it can push open the sealing ball 35. When the liquid medium flows from bottom to top, the sealing ball 35 will close the flow hole 34, which means that the liquid cannot flow from bottom to top.

[0097] In one embodiment, such as Figure 7 , Figure 8 As shown, the valve cylinder assembly 32 includes a sealing cylinder 321, a through hole 322, and a third guide spring 323. The sealing cylinder 321 has a bottom seal and a top opening, and is coaxially slidably disposed within the lower outer valve body 31. The sealing plate 33 is sealed and fixedly connected to the inner wall of the sealing cylinder 321, and the sealing ball 35 and the spring push assembly 36 are respectively disposed within the sealing cylinder 321.

[0098] There are multiple through holes 322, and the multiple through holes 322 are respectively located at the lower end of the sealing cylinder 321. When the sealing cylinder 321 moves downward to the open position, the multiple through holes 322 are exposed below the lower outer valve body 31, that is, the lower outer valve body 31 cannot close the through holes 322.

[0099] The third guide spring 323 is disposed on the sealing cylinder 321 and the lower outer valve body 31. The third guide spring 323 is used to push the sealing cylinder 321 upward to the closed position so that the lower outer valve body 31 closes the guide hole 322, thereby realizing the closing control of the lower backflow assembly.

[0100] In this embodiment, "the sealing cylinder 321 moves to the open position" means that the sealing cylinder 321 moves downward until the multiple through holes 322 are exposed, and "the sealing cylinder 321 moves to the open position" means that the sealing cylinder 321 moves upward until the multiple through holes 322 are completely inside the lower outer valve body 31.

[0101] In one embodiment, such as Figure 7 , Figure 8As shown, the spring push assembly 36 includes a support block 361, a support groove 362, a push rod 363, a push spring 364, and a compression spring 365. The support block 361 is fixed to the bottom inner wall of the sealing cylinder 321. The support groove 362 is disposed on the support block 361. The push rod 363 is vertically slidably connected to the support groove 362, and the top of the push rod 363 is fixedly connected to the sealing ball 35.

[0102] A push spring 364 is disposed within a support groove 362. The top of the push spring 364 is fixedly connected to the push rod 363, and the bottom is fixedly connected to the support block 361. The push spring 364 is used to push the push rod 363 upward. A compression spring 365 is sleeved on the push rod 363. The top of the compression spring 365 is fixedly connected to the sealing ball 35, and the bottom is fixedly connected to the support block 361. The compression spring 365 is used to push the sealing ball 35 upward.

[0103] In one embodiment, such as Figure 7 , Figure 8 As shown, the third guide spring component 323 includes multiple third guide rods 3231, multiple third guide grooves 3232, and multiple third springs 3233. The multiple third guide rods 3231 are respectively fixed to the bottom of the outer edge of the sealing cylinder 321, and the multiple third guide grooves 3232 are respectively disposed on the lower outer valve body 31. The multiple third guide rods 3231 are vertically slidably connected to the corresponding third guide grooves 3232.

[0104] Multiple third springs 3233 are correspondingly disposed in the corresponding third guide grooves 3232. One end of the third spring 3233 is fixedly connected to the corresponding third guide rod 3231, and the other end is fixedly connected to the lower outer valve body 31. The third spring 3233 is used to push the corresponding third guide rod 3231 to move upward.

[0105] In this embodiment, the upper anti-backflow component 2 and the lower anti-backflow component can be activated individually or in conjunction, as specifically configured below:

[0106] (1) Enable separately

[0107] When the valve plate 22 moves downward to the open position, there is a distance between the sealing cylinder 321 and the valve plate 22. As the liquid medium continuously enters the sealing cylinder 321, the sealing cylinder 321 gradually moves downward, thereby enabling the upper anti-backflow component and the lower anti-backflow component 3 to open independently.

[0108] (2) Linkage Activation

[0109] When the valve plate 22 moves downward a certain distance and the raft plate has not reached the open position, the sealing cylinder 321 abuts against the valve plate 22. As the raft plate continues to move downward, the sealing cylinder 321 also moves downward, thereby causing the upper anti-backflow component and the lower anti-backflow component 3 to open in conjunction.

[0110] like Figures 9-11 As shown in this embodiment, only the upper anti-backflow component 2 and the lower anti-backflow component are shown in their individually activated states. The usage process of the floatation hoop and float shoe mechanism in this embodiment is as follows:

[0111] like Figure 9 As shown, when the liquid medium continuously enters the outer cylinder 1, components such as the protective plate 264 and valve plate 22 are pressed downwards. At this time, components such as the protective cylinder 251 move downwards synchronously. When the valve plate 22 moves to the open position, the first sealing surface 23 and the second sealing surface 24 are completely separated, and the protective cylinder 251 blocks the first sealing surface 23. During this process, under the impact of the water flow, the valve stem 253 drives the protective plate 264 and valve plate 22 to rotate.

[0112] like Figure 10 As shown, as the liquid medium continuously enters the sealing cylinder 321, the sealing cylinder 321 moves downward to the open position. At this time, multiple through holes 322 are exposed below the lower outer valve body 31, and the liquid medium pushes open the sealing ball 35 so that the liquid medium is finally discharged through the multiple through holes 322.

[0113] like Figure 11 As shown, when the liquid medium flow is interrupted, the protective cylinder 251, sealing cylinder 321, sealing ball 35, and valve stem 253 move upward and reset under the action of their respective control units. That is, the sealing cylinder 321 and valve plate 22 move to their respective closed positions. At this time, the first sealing surface 23 and the second sealing surface 24 form a sealing fit, the sealing ball 35 closes the flow hole 34, and the multiple through holes 322 enter the lower outer valve body 31 respectively, so that the upper anti-backflow component 2 and the lower anti-backflow component 3 are closed respectively, and the liquid medium cannot flow from the lower right to the upper left.

[0114] As described above, the float hoop and float shoe mechanism partially shields and protects the second sealing surface 24 of the valve plate 22 through the protective plate 264 and the first sealing surface 23 through the protective cylinder 251, thereby effectively protecting the valve plate 22, the upper outer valve body 21, and the valve plate 22. When the liquid medium flows, it can effectively reduce the risk of erosion and wear of the liquid medium flow on the upper outer valve body 21 and the valve plate 22, thereby improving the service life of the erosion-resistant float hoop and float shoe mechanism and maintaining its sealing performance, thus improving the stability of use.

[0115] It should be noted that, unless otherwise stated, the technical or scientific terms used in this utility model shall have the ordinary meaning as understood by those skilled in the art to which this utility model pertains.

[0116] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An anti-erosion floating hoop and floating shoe mechanism, comprising an outer cylinder (1), characterized in that, The anti-erosion buoyancy system also includes an upper anti-backflow assembly (2) disposed within the outer cylinder (1), the upper anti-backflow assembly (2) comprising: The upper outer valve body (21) is coaxially disposed inside the outer cylinder (1); Valve plate (22) is disposed inside the upper outer valve body (21); The first sealing surface (23) is disposed on the inner wall of the upper outer valve body (21); The second sealing surface (24) is located at the outer edge of the valve plate (22) and can cooperate with the first sealing surface (23) to seal. The valve control assembly (25) is coaxially slidably disposed within the upper outer valve body (21) and is used to control the valve plate (22) to move vertically to the open or closed position; A protective component (26) is disposed on the valve control component (25); When the valve plate (22) moves downward to the open position, the protective component (26) can partially block the second sealing surface (24).

2. The anti-erosion floating hoop and floating shoe mechanism according to claim 1, characterized in that, The protective component (26) includes: A limiting plate (261) is arranged parallel above the valve plate (22) and connected to the valve control assembly (25), and a limiting guide groove (263) is formed between the limiting plate (261) and the valve plate (22); A support ring (262) is disposed in the limiting guide groove (263) and connected to the valve control assembly (25); Multiple protective plates (264) surround the support ring (262). Each of the multiple protective plates (264) can slide radially along the support ring (262). Each of the multiple protective plates (264) is fan-shaped. When the valve plate (22) moves upward to the closed position, the multiple protective plates (264) abut against each other and form a ring-shaped protective structure. A first guide spring (265) is used to control the plurality of protective plates (264) to move in a direction away from the support ring (262) so that the plurality of protective plates (264) respectively block the corresponding positions of the second sealing surface (24).

3. The anti-erosion floating hoop and floating shoe mechanism according to claim 2, characterized in that, Each of the protective plates (264) is provided with a third sealing surface (269) at the outer edge position, and when the valve plate (22) moves upward to the closed position, the third sealing surface (269) can cooperate with the first sealing surface (23) to seal; The inner wall of the upper outer valve body (21) is provided with a guide slope (4) located below the first sealing surface (23), and the protective plate (264) can move smoothly toward the support ring (262) under the guidance of the guide slope (4).

4. The anti-erosion floating hoop and floating shoe mechanism according to claim 2, characterized in that, The valve control assembly (25) includes: The protective sleeve (251) is coaxially slidably disposed inside the upper outer valve body (21); A fixing rod (252) is fixedly connected to the inner wall of the protective cylinder (251); The valve stem (253) passes through the fixed rod (252) and slides vertically with the fixed rod (252), and the bottom of the valve stem (253) is fixedly connected to the valve plate (22); A spring drive assembly (255) is disposed on the valve stem (253) and the fixed rod (252) and is used to control the valve stem (253) to move upward; A spring reset assembly (256) is disposed on the protective cylinder (251) and the upper outer valve body (21) and is used to control the upward movement of the protective cylinder (251); When the valve plate (22) moves downward to the open position, the protective cylinder (251) can block the first sealing surface (23).

5. The anti-erosion floating hoop and floating shoe mechanism according to claim 4, characterized in that, The spring return assembly (256) includes: The guide outer edge (2561) is coaxially disposed on the outer wall of the protective cylinder (251); A guide groove (2562) is provided on the inner wall of the protective cylinder (251), and the outer edge of the guide (2561) is vertically slidingly engaged with the guide groove (2562); The second guide spring (2563) is disposed on the guide outer edge (2561) and the protective cylinder (251) and is used to control the guide outer edge (2561) to move upward.

6. The anti-erosion floating hoop and floating shoe mechanism according to claim 4, characterized in that, The valve stem (253) is also able to rotate along its own axis, and the outer cylinder (1) and the valve stem (253) are provided with control components (5) for controlling the rotation of the valve stem (253).

7. The anti-erosion floating hoop and floating shoe mechanism according to claim 6, characterized in that, The control element (5) includes: A control blade (51) is disposed at the upper end of the valve stem (253); The guide plate (52) is coaxially disposed inside the outer cylinder (1) and located above the upper outer valve body (21); A flow guide hole (53) is provided on the flow guide plate (52); The liquid medium flowing downward through the guide hole (53) can impact the control blade (51), causing the control blade (51) to drive the valve stem (253) to rotate.

8. The anti-erosion floating hoop and floating shoe mechanism according to claim 1, characterized in that, The anti-erosion floating hoop and floating shoe mechanism also includes a lower anti-backflow component (3) disposed inside the outer cylinder (1). The lower anti-backflow component (3) is located below the upper outer valve body (21) and is used to block the liquid medium from flowing from bottom to top.

9. The anti-erosion floating hoop and floating shoe mechanism according to claim 8, characterized in that, The lower anti-backflow assembly (3) includes: The lower outer valve body (31) is coaxially disposed inside the outer cylinder (1); The valve cylinder assembly (32) is disposed inside the lower outer valve body (31); A sealing plate (33) is sealed to the inner wall of the valve cylinder assembly (32); An overflow hole (34) is provided on the sealing plate (33); A sealing ball (35) is movably disposed within the valve cylinder assembly (32) and located below the sealing plate (33); A spring push assembly (36) is disposed within the valve cylinder assembly (32) and is used to push the sealing ball (35) upward so that the sealing ball (35) closes the flow hole (34).

10. The anti-erosion floating hoop and floating shoe mechanism according to claim 9, characterized in that, The valve cylinder assembly (32) includes: The sealing cylinder (321) has an opening facing upward and is coaxially slidably disposed inside the lower outer valve body (31). The sealing plate (33) is sealed and connected to the inner wall of the sealing cylinder (321). The sealing ball (35) and the spring push assembly (36) are respectively disposed inside the sealing cylinder (321). A through hole (322) is provided at the lower end of the sealing cylinder (321), and when the sealing cylinder (321) moves downward to the open position, the through hole (322) is exposed below the lower outer valve body (31); A third guide spring (323) is disposed on the sealing cylinder (321) and the lower outer valve body (31) and is used to push the sealing cylinder (321) upward to the closed position so that the lower outer valve body (31) closes the through hole (322).

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