Flow choking type eccentric semi-ball valve for slurry

Abstract

The utility model discloses a choked flow type eccentric half ball valve for slurry, which comprises a valve body and flange seats fixedly connected to two sides of the valve body, and one flange seat is provided with a valve seat unit; the valve seat unit comprises a valve seat assembly and a mounting seat, the valve seat assembly comprises a valve seat body and an inserting ring block, the valve seat body is located in the valve body, and the inserting ring block is fixedly connected to one side of the valve seat body; the mounting base is arranged on one side of the inserting ring block, the inserting ring block is inserted into the mounting base, and the mounting base is slidably connected into the flange base. According to the choked-flow type eccentric half ball valve for the slurry, the valve seat unit is arranged, a plug-in type structure is adopted, the plug-in ring block is plugged in the mounting seat, and the mounting seat is slidably connected in the flange seat, so that a valve seat assembly is more rapid and convenient to replace, the whole valve does not need to be disassembled, the maintenance time is greatly shortened, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of eccentric hemispherical valve technology, specifically a flow-blocking eccentric hemispherical valve for mud. Background Technology

[0002] The flow-blocking eccentric hemispherical valve for mud is a valve specifically designed for high-viscosity media such as mud containing solid particles. Through the unique design of the eccentric structure and hemispherical valve core, it achieves efficient shut-off, regulation and flow-blocking functions.

[0003] During opening, the valve core first disengages from the valve seat to avoid friction and wear; during closing, the valve core gradually presses against the valve seat, achieving zero leakage through a metal-to-metal or metal-to-non-metal sealing pair. For slurry media, the valve core surface is typically hardened (e.g., by overlaying hard alloy) or coated with a wear-resistant coating to resist particle erosion.

[0004] Because mud contains many solid particles, these particles can easily cause wear on the valve seat during long-term use, leading to a decrease in the sealing performance of the valve seat and a shortened service life. Consequently, regular maintenance and replacement of the valve seat are required. However, the valve seat of most existing flow-blocking eccentric hemispherical valves is fixedly installed in the valve body, making the installation and disassembly of the valve seat cumbersome and inconvenient for daily maintenance and replacement. Utility Model Content

[0005] The purpose of this invention is to provide a flow-blocking eccentric hemispherical valve for mud, which solves the problem that the valve seat of most flow-blocking eccentric hemispherical valves is fixedly installed in the valve body, making the installation and disassembly of the valve seat cumbersome and inconvenient for daily maintenance and replacement.

[0006] A flow-blocking eccentric hemispherical valve for mud includes a valve body and flange seats fixedly connected to both sides thereon, one of the flange seats being provided with a valve seat unit.

[0007] The valve seat unit includes:

[0008] Valve seat assembly, the valve seat assembly comprising:

[0009] Valve seat body, the valve seat body being located inside the valve body;

[0010] A plug-in ring block, which is fixedly connected to one side of the valve seat body;

[0011] The mounting base is located on one side of the plug-in ring block, and the plug-in ring block is inserted into the mounting base. The mounting base is slidably connected to the flange seat.

[0012] Preferably, a valve core is rotatably connected inside the valve body, the valve core is C-shaped, and the valve core abuts against the valve seat body.

[0013] Preferably, a valve cover is fixedly connected to the top of the valve body, the valve cover is provided with sealing packing, a valve stem is rotatably connected inside the valve cover, and the bottom end of the valve stem is fixedly connected to the valve core.

[0014] Preferably, a base is fixedly connected to the bottom of the valve body, and the base is rotatably connected to the bottom end of the valve core.

[0015] Preferably, a switch dial is fixedly connected to the top of the valve stem.

[0016] Preferably, a limiting block is fixedly connected to the inner side of the flange seat, and the limiting block has a slot.

[0017] Preferably, the valve seat assembly further includes a fastening bolt, the bottom end of which passes through the insertion ring block, and the fastening bolt is threadedly connected to both the insertion ring block and the mounting seat.

[0018] Preferably, the mounting base has an annular groove, which is movably inserted into the insertion ring block.

[0019] Preferably, the mounting base is provided with a sealing gasket, which is pressed and snapped into a groove.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This flow-blocking eccentric hemispherical valve for mud uses a plug-in structure. The plug-in ring is inserted into the mounting seat, which is slidably connected to the flange seat and then secured by the pipe flange. When the valve seat needs to be replaced, simply pull the mounting seat out of the flange seat and loosen the fastening bolts to remove the valve seat body from the mounting seat. This makes valve seat assembly replacement faster and more convenient, eliminating the need to disassemble the entire valve, greatly shortening maintenance time and reducing maintenance costs.

[0022] 2. This flow-blocking eccentric hemispherical valve for mud uses a sealing gasket that is squeezed and clamped into a groove, which further enhances the sealing performance between the valve seat unit and the flange seat and improves the overall sealing effect of the valve. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the flange seat structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the valve seat unit structure of this utility model.

[0027] In the diagram: 1. Valve body; 2. Flange seat; 21. Limiting block; 211. Slot; 3. Valve seat unit; 31. Valve seat assembly; 311. Valve seat body; 312. Insertion ring block; 313. Fastening bolt; 32. Mounting seat; 321. Annular groove; 322. Sealing gasket; 4. Valve cover; 5. Base; 6. Valve stem; 7. Switching disc. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-3 This utility model provides a technical solution:

[0030] Example 1

[0031] A flow-blocking eccentric hemispherical valve for mud includes a valve body 1 and flange seats 2 fixedly connected to both sides thereon, one of the flange seats 2 being provided with a valve seat unit 3.

[0032] Valve seat unit 3 includes:

[0033] Valve seat assembly 31, valve seat assembly 31 includes:

[0034] Valve seat body 311, which is located inside valve body 1;

[0035] Insertion ring block 312, the insertion ring block 312 is fixedly connected to one side of valve seat body 311;

[0036] Mounting seat 32 is located on one side of the insertion ring block 312, and the insertion ring block 312 is inserted into the mounting seat 32. The mounting seat 32 is slidably connected to the flange seat 2.

[0037] Furthermore, a valve core is rotatably connected inside the valve body 1. The valve core is C-shaped and abuts against the valve seat body 311. The C-shaped design of the valve core makes the contact area between the valve core and the mud relatively small during rotation, reducing the resistance of the mud to the valve core, thereby reducing the operating force of the valve and making the opening and closing of the valve easier and less strenuous.

[0038] Furthermore, a valve cover 4 is fixedly connected to the top of the valve body 1. The valve cover 4 is provided with sealing packing. A valve stem 6 is rotatably connected inside the valve cover 4. The bottom end of the valve stem 6 is fixedly connected to the valve core.

[0039] Furthermore, a base 5 is fixedly connected to the bottom of the valve body 1, and the base 5 is rotatably connected to the bottom end of the valve core.

[0040] Furthermore, a switch dial 7 is fixedly connected to the top of the valve stem 6. When the valve needs to be opened, the switch dial 7 is rotated, causing the valve stem 6 to rotate, which in turn causes the valve core to rotate. Since the valve core is C-shaped, during rotation, the contact area between the valve core and the valve seat body 311 gradually decreases, the mud flow channel gradually opens, and the mud begins to pass through the valve. When the valve needs to be closed, the switch dial 7 is rotated in the opposite direction, the valve stem 6 causes the valve core to rotate in the opposite direction, the valve core and the valve seat body 311 re-engage tightly, closing the mud flow channel, and the valve returns to the closed state.

[0041] Example 2

[0042] A flow-blocking eccentric hemispherical valve for mud includes a valve body 1 and flange seats 2 fixedly connected to both sides thereon, one of the flange seats 2 being provided with a valve seat unit 3.

[0043] Valve seat unit 3 includes:

[0044] Valve seat assembly 31, valve seat assembly 31 includes:

[0045] Valve seat body 311, which is located inside valve body 1;

[0046] Insertion ring block 312, the insertion ring block 312 is fixedly connected to one side of valve seat body 311;

[0047] Mounting seat 32 is located on one side of the insertion ring block 312, and the insertion ring block 312 is inserted into the mounting seat 32. The mounting seat 32 is slidably connected to the flange seat 2.

[0048] Furthermore, a limiting block 21 is fixedly connected to the inner side of the flange seat 2, and a slot 211 is provided on the limiting block 21.

[0049] Furthermore, the valve seat assembly 31 also includes a fastening bolt 313, the bottom end of which passes through the insertion ring block 312, and the fastening bolt 313 is threadedly connected to the insertion ring block 312 and the mounting base 32 respectively.

[0050] Furthermore, the mounting base 32 has an annular groove 321, which is movably inserted into the insertion ring block 312. When the valve seat needs to be replaced, the mounting base 32 is first pulled out from the flange seat 2, at which point the sealing gasket 322 disengages from the retaining groove 211. Then, the fastening bolts 313 are loosened, and the valve seat assembly 31 is removed from the mounting base 32. When installing a new valve seat assembly 31, the insertion ring block 312 is first inserted into the annular groove 321 of the mounting base 32, and the fastening bolts 313 are tightened to fix the valve seat assembly 31 to the mounting base 32. Finally, the mounting base 32 is inserted into the flange seat 2, causing the sealing gasket 322 to be pressed and engaged in the retaining groove 211, completing the installation of the valve seat unit 3. This makes the replacement of the valve seat assembly 31 faster and more convenient, without disassembling the entire valve, greatly shortening maintenance time and reducing maintenance costs.

[0051] Furthermore, a sealing gasket 322 is provided on the mounting base 32. The sealing gasket 322 is squeezed and snapped into the groove 211. The sealing gasket 322 is squeezed and snapped into the groove 211, which further enhances the sealing performance between the valve seat unit 3 and the flange seat 2 and improves the overall sealing effect of the valve.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow-blocking eccentric hemispherical valve for mud, comprising a valve body (1) and flange seats (2) fixedly connected to both sides thereof, characterized in that: One of the flange seats (2) is provided with a valve seat unit (3); The valve seat unit (3) includes: Valve seat assembly (31), the valve seat assembly (31) comprising: Valve seat body (311), the valve seat body (311) is located inside the valve body (1); A plug-in ring block (312) is fixedly connected to one side of the valve seat body (311); Mounting seat (32), which is located on one side of the insertion ring block (312) and the insertion ring block (312) is inserted into the mounting seat (32). The mounting seat (32) is slidably connected to the flange seat (2).

2. The flow-blocking eccentric hemispherical valve for mud as described in claim 1, characterized in that: The valve body (1) is internally connected to a valve core, which is C-shaped and abuts against the valve seat body (311).

3. The flow-blocking eccentric hemispherical valve for mud as described in claim 2, characterized in that: A valve cover (4) is fixedly connected to the top of the valve body (1). The valve cover (4) is provided with sealing packing. A valve stem (6) is rotatably connected inside the valve cover (4). The bottom end of the valve stem (6) is fixedly connected to the valve core.

4. The flow-blocking eccentric hemispherical valve for mud as described in claim 2, characterized in that: The bottom of the valve body (1) is fixedly connected to a base (5), and the base (5) is rotatably connected to the bottom end of the valve core.

5. The flow-blocking eccentric hemispherical valve for mud as described in claim 3, characterized in that: A switch dial (7) is fixedly connected to the top of the valve stem (6).

6. The flow-blocking eccentric hemispherical valve for mud as described in claim 1, characterized in that: A limiting block (21) is fixedly connected to the inner side of the flange seat (2), and a slot (211) is provided on the limiting block (21).

7. The flow-blocking eccentric hemispherical valve for mud as described in claim 1, characterized in that: The valve seat assembly (31) also includes a fastening bolt (313), the bottom end of which passes through the insertion ring block (312), and the fastening bolt (313) is threadedly connected to the insertion ring block (312) and the mounting base (32) respectively.

8. The flow-blocking eccentric hemispherical valve for mud as described in claim 1, characterized in that: The mounting base (32) has an annular groove (321) which is movably inserted into the insertion ring block (312).

9. The flow-blocking eccentric hemispherical valve for mud as described in claim 6, characterized in that: A sealing gasket (322) is provided on the mounting base (32), and the sealing gasket (322) is squeezed and snapped into the slot (211).

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