High pressure resistant valve casting

Abstract

The utility model relates to related technical field of mechanical manufacturing especially, it is a kind of high-pressure-resistant valve casting, including first pipeline and second pipeline, one side surface flange of first pipeline is connected with pipeline valve, one side surface fixedly connected with fixed sleeve of pipeline valve, the inboard surface fixedly connected with fixed ring of pipeline valve, the inboard of pipeline valve is provided with intercepting mechanism. This high-pressure-resistant valve casting, through the double sealing design of fluorine rubber seal ring and structure resistance, when the convex block is embedded in fixed ring inner wall by screw rod, two parallel fluorine rubber seal rings form first close seal due to material high-pressure-resistant, anti-deformation characteristics, while the size difference of valve core outer wall and fixed ring end face forms second structure seal, double protection can effectively resist high-pressure fluid impact, avoid leakage risk;The "isosceles trapezoid" cross section of alignment block can be quickly and accurately attached with fixed block, reduce the deviation loss in power transmission process.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, and in particular to a high-pressure resistant valve casting. Background Technology

[0002] Valves are key components in fluid transport systems and are widely used in various fields involving fluid transport, such as industry, energy, and municipal engineering. They are mainly composed of core parts such as valve body, valve core, valve seat, valve stem, actuator, and seals. There are various types, including gate valves, ball valves, and globe valves. Their performance needs to be adapted to the pressure, temperature, and media characteristics of the application scenario. Therefore, there is a particular need for high-pressure resistant valve castings.

[0003] Chinese patent CN222633907U, published on March 18, 2025, discloses a one-way valve for preventing contamination. While ensuring the sealing of the sealing part, it can increase the flow rate of the reverse water flow pulse, thereby improving the effect of delaying or eliminating the complete blockage of the filter screen. However, this one-way valve for preventing contamination lacks an effective shut-off function. When encountering high pressure impact, its structural strength and sealing performance are difficult to effectively resist, which limits its application in high pressure working conditions. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure resistant valve casting to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure resistant valve casting, comprising a first pipe and a second pipe, a pipe valve connected to a flange on one side surface of the first pipe, a fixed sleeve fixedly connected to one side surface of the pipe valve, a fixed ring fixedly connected to the inner surface of the pipe valve, and a cut-off mechanism provided on the inner side of the pipe valve.

[0006] The cutting-off mechanism includes a rotating seat and a threaded rod. The rotating seat is fixedly connected to the inner surface of the pipeline valve, and the threaded rod is threadedly connected to the inner surface of the fixed sleeve. A handle is fixedly connected to the end of the threaded rod away from the pipeline valve, and an alignment block is fixedly connected to the end of the threaded rod away from the handle. A rotating component is rotatably connected to the outer surface of the rotating seat, and a valve core is fixedly connected to one end of the rotating component. A fixing block is fixedly connected to the side surface of the valve core near the rotating component, and a threaded hole is opened on one side surface of the fixing block. A protrusion is fixedly connected to the side surface of the valve core away from the rotating component, and a sealing ring is fixedly connected to the outer surface of the protrusion.

[0007] Preferably, the size of the protrusion is adapted to the inner wall size of the fixing ring, the outer wall size of the valve core is larger than the inner wall size of the fixing ring, and the vertical central axis of the fixing sleeve intersects the horizontal central axis of the pipeline valve perpendicularly.

[0008] Preferably, there are two rotating components of the same size, which are symmetrically distributed along the horizontal central axis of the rotating components, and the vertical central axes of the threaded rod, the throttle, and the alignment block coincide.

[0009] Preferably, the sealing rings are provided in two identical sizes and are distributed parallel to each other along the transverse central axis of the protrusion.

[0010] Preferably, the threaded hole is adapted to the size of the threaded rod, and the inner wall dimensions of the first pipe and the second pipe are the same.

[0011] Preferably, the cross-section of the alignment block is designed as an "isosceles trapezoid", and the horizontal and vertical central axes of the fixing ring, the first pipe and the second pipe coincide.

[0012] Preferably, the sealing ring is made of fluororubber, and the vertical center axis of the rotating seat intersects the horizontal center axis of the pipeline valve perpendicularly.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the high-pressure resistant valve casting, through the double sealing design of fluororubber sealing rings and structural contact, when the threaded rod drives the protrusion to embed into the inner wall of the fixed ring, the two parallel fluororubber sealing rings form the first tight seal due to the high pressure resistance and deformation resistance of the material, while the dimensional difference between the outer wall of the valve core and the end face of the fixed ring forms the second structural seal. The double protection can effectively resist the impact of high pressure fluid and avoid the risk of leakage.

[0014] The "isosceles trapezoidal" cross-section of the positioning block can quickly and accurately fit with the fixed block, reducing offset loss during power transmission and helping the valve core to efficiently complete the opening and closing action. The two symmetrically distributed rotating parts, together with the vertical positioning of the rotating seat, ensure that the valve core is subjected to uniform force when rotating, avoiding structural deformation caused by unilateral force and improving the structural durability of the valve in long-term high-pressure use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the pipeline valve and fixing sleeve structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the rotating seat and fixed ring structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating component and valve core structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the protrusion and sealing ring structure of this utility model;

[0020] Figure 6This is a schematic diagram of the threaded rod, throttle, and alignment block of this utility model.

[0021] In the diagram: 1. First pipe; 2. Second pipe; 3. Pipe valve; 4. Fixing sleeve; 5. Fixing ring; 6. Cut-off mechanism; 601. Rotating seat; 602. Threaded rod; 603. Turning handle; 604. Alignment block; 605. Rotating component; 606. Valve core; 607. Fixing block; 608. Threaded hole; 609. Protrusion; 610. Sealing ring. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-6 This utility model provides a technical solution: a high-pressure resistant valve casting, including a first pipe 1 and a second pipe 2, a pipe valve 3 is connected to a flange on one side surface of the first pipe 1, a fixing sleeve 4 is fixedly connected to one side surface of the pipe valve 3, a fixing ring 5 is fixedly connected to the inner surface of the pipe valve 3, and a cut-off mechanism 6 is provided on the inner side of the pipe valve 3.

[0024] The shut-off mechanism 6 includes a rotating seat 601 and a threaded rod 602. The rotating seat 601 is fixedly connected to the inner surface of the pipeline valve 3. The threaded rod 602 is threadedly connected to the inner surface of the fixed sleeve 4. A handle 603 is fixedly connected to the end of the threaded rod 602 away from the pipeline valve 3, and an alignment block 604 is fixedly connected to the end of the threaded rod 602 away from the handle 603. A rotating component 605 is rotatably connected to the outer surface of the rotating seat 601, and a valve core 606 is fixedly connected to one end of the rotating component 605. A fixing block 607 is fixedly connected to the side surface of valve core 606 near the rotating component 605. A threaded hole 608 is formed on one side surface of fixing block 607. A protrusion 609 is fixedly connected to the side surface of valve core 606 away from the rotating component 605. A sealing ring 610 is fixedly connected to the outer surface of protrusion 609. The valve core 606 is connected to the rotating seat 601, threaded rod 602, handle 603, alignment block 604, rotating component 605, valve core 606, fixing block 607, threaded hole 608, protrusion 609, and sealing ring 610. With the sealing ring 610 in use, the operator rotates the handle 603, causing the threaded rod 602 to move vertically into the pipeline valve 3. The alignment block 604 at the end of the threaded rod 602 moves with the rod, and the fixing block 607 on the side near the naturally hanging valve core 606, through the threaded hole 608, applies a thrust to the fixing block 607 by the threaded rod 602. This causes the valve core 606 to move towards the fixing ring 5 with the rotating seat 601 as the fulcrum and through the two symmetrically distributed rotating parts 605. When the valve core 606 rotates to its limit position, the protrusion 609 on its surface is fully embedded in the inner wall of the fixing ring 5. At this time, the two parallel fluororubber sealing rings 610 on the outer side of the protrusion 609 are tightly pressed against the inner wall of the fixing ring 5. The high pressure resistance and deformation resistance of fluororubber form the first seal. At the same time, the outer wall size of the valve core 606 is larger than the inner wall size of the fixing ring 5. The edge of the valve core 606 abuts against the end face of the fixing ring 5 to form the second structural seal. The double sealing design can effectively block the flow of high pressure fluid.

[0025] Furthermore, the size of the protrusion 609 is adapted to the inner wall size of the fixing ring 5, and the outer wall size of the valve core 606 is larger than the inner wall size of the fixing ring 5. The vertical central axis of the fixing sleeve 4 intersects perpendicularly with the horizontal central axis of the pipeline valve 3. Through the arrangement of the valve core 606, the protrusion 609, and the fixing ring 5, the size of the protrusion 609 is precisely adapted to the inner wall size of the fixing ring 5 during use. Combined with the design that the outer wall size of the valve core 606 is larger than the inner wall size of the fixing ring 5, when the valve core 606 is rotated into place, the protrusion 609 can be fully embedded in the fixing ring 5 to form a seal. The contact between the outer wall of the valve core 606 and the end face of the fixing ring 5 forms an outer circumferential seal. The double-fit structure can effectively reduce the sealing gap and make the mechanism more stable.

[0026] Furthermore, two rotating parts 605 of the same size are provided and are symmetrically distributed along the horizontal central axis of the rotating parts 605. The vertical central axes of the threaded rod 602, the handle 603 and the alignment block 604 coincide. Through the setting of the rotating parts 605, the symmetrically arranged rotating parts 605 limit the rotation trajectory of the valve core 606 during use, so that it always rotates around the rotating seat 601 as the center. With the coaxial transmission of the threaded rod 602, the handle 603 and the alignment block 604, it is ensured that the protrusion 609 can be precisely aligned and engaged with the fixed ring 5 every time the valve core 606 is closed, which greatly improves the stability of the mechanism.

[0027] Furthermore, two sealing rings 610 of the same size are provided and are distributed parallel to each other along the horizontal central axis of the protrusion 609. With the setting of sealing rings 610, the two sealing rings 610 of the same size are distributed in parallel to form a "double sealing defense line" during use. Even if one of the sealing rings 610 is slightly worn due to long-term high pressure compression, the other can still maintain the sealing performance, which greatly reduces the risk of leakage caused by single-point failure.

[0028] Furthermore, the threaded hole 608 and the threaded rod 602 are matched in size. The inner wall dimensions of the first pipe 1 and the second pipe 2 are the same. With the setting of the threaded hole 608 and the threaded rod 602, during use, because the threaded hole 608 and the threaded rod 602 are precisely matched in size, the end of the threaded rod 602 can be smoothly screwed into the threaded hole 608 of the fixing block 607, forming a rigid connection power transmission structure, which directly applies the thrust to the valve core 606, causing the valve core 606 to rotate in the direction of the fixing ring 5 with the rotating seat 601 as the fulcrum, thereby achieving sealing closure.

[0029] Furthermore, the cross-section of the alignment block 604 is designed as an "isosceles trapezoid". The horizontal and vertical central axes of the fixing ring 5, the first pipe 1 and the second pipe 2 coincide. With the setting of the alignment block 604, the "isosceles trapezoid" alignment block 604 has guiding ability during use. No matter if there is a slight deviation in the pushing direction of the threaded rod 602, or if the fixed block 607 is offset due to assembly error, the inclined surface of the alignment block 604 can achieve adaptive docking, and power transmission can be completed without repeated calibration by the operator.

[0030] Furthermore, the sealing ring 610 is made of fluororubber. The vertical center axis of the rotating seat 601 intersects perpendicularly with the horizontal center axis of the pipeline valve 3. With the setting of the sealing ring 610, the chemical stability of the fluororubber sealing ring 610 during use gives it excellent resistance to ozone aging and thermo-oxidative aging. Even if it is exposed to air for a long time or during the cycle of opening and closing, it is not easy to experience aging phenomena such as cracking and powdering.

[0031] Working principle: When the operator rotates the handle 603, the threaded rod 602 fixed to the handle 603 rotates accordingly. Since the threaded rod 602 is threadedly connected to the fixed sleeve 4 and the fixed sleeve 4 is rigidly fixed to the pipeline valve 3, the threaded transmission converts the rotational motion into a linear pushing motion of the threaded rod 602 into the pipeline valve 3 in a vertical direction. The alignment block 604 at the end of the threaded rod 602 pushes forward with the rod, approaching the fixed block 607 on the side of the naturally hanging valve core 606. Through the threaded hole 608, the threaded rod 602 applies a thrust to the fixed block 607, causing the valve core 606 to rotate towards the fixed ring 5 with the rotating seat 601 as the fulcrum and through two symmetrically distributed rotating parts 605. When the valve core 606 rotates to its limit position, the protrusion 609 on its surface is completely embedded in the inner wall of the fixed ring 5. At this time, the two parallel fluororubber sealing rings 610 on the outer side of the protrusion 609 are tightly squeezed into the inner wall of the fixed ring 5. The pressure is controlled by the high pressure resistance and deformation resistance of fluororubber to form the first seal. At the same time, the outer wall size of the valve core 606 is larger than the inner wall size of the fixed ring 5. The edge of the valve core 606 abuts against the end face of the fixed ring 5 to form the second structural seal. The double sealing design can effectively block the flow of high pressure fluid. When the fluid is flowing, the handle 603 is rotated in the opposite direction, and the threaded rod 602 rotates out in the opposite direction along the fixed sleeve 4, which drives the alignment block 604 to disengage from the fixed block 607, releasing the thrust constraint on the valve core 606. Under the action of the fluid pressure in the pipeline, the valve core 606 rotates in the opposite direction with the rotating seat 601 as the fulcrum. The protrusion 609 disengages from the inner wall of the fixed ring 5, and the valve core 606 retracts to a position that does not obstruct the flow of fluid. At this time, the internal channel of the pipeline valve 3 is fully opened, and the fluid flows in from the first pipeline 1 with the same inner wall size, flows through the internal space of the pipeline valve 3 to the second pipeline 2. This completes the use process of a high pressure resistant valve casting.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure resistant valve casting, comprising a first pipe (1) and a second pipe (2), characterized in that: A pipe valve (3) is connected to a flange on one side of the first pipe (1). A fixing sleeve (4) is fixedly connected to one side of the pipe valve (3). A fixing ring (5) is fixedly connected to the inner side of the pipe valve (3). A cut-off mechanism (6) is provided on the inner side of the pipe valve (3). The cutting-off mechanism (6) includes a rotating seat (601) and a threaded rod (602). The rotating seat (601) is fixedly connected to the inner surface of the pipe valve (3), and the threaded rod (602) is threadedly connected to the inner surface of the fixing sleeve (4). A handle (603) is fixedly connected to one end of the threaded rod (602) away from the pipe valve (3), and an alignment block (604) is fixedly connected to the other end of the threaded rod (602) away from the handle (603). The outer surface of the rotating seat (601) is... A rotating component (605) is rotatably connected to the rotating component (605). A valve core (606) is fixedly connected to one end of the rotating component (605). A fixing block (607) is fixedly connected to the side surface of the valve core (606) near the rotating component (605). A threaded hole (608) is opened on one side surface of the fixing block (607). A protrusion (609) is fixedly connected to the side surface of the valve core (606) away from the rotating component (605). A sealing ring (610) is fixedly connected to the outer surface of the protrusion (609).

2. The high-pressure resistant valve casting according to claim 1, characterized in that: The size of the protrusion (609) is adapted to the inner wall size of the fixing ring (5), the outer wall size of the valve core (606) is larger than the inner wall size of the fixing ring (5), and the vertical central axis of the fixing sleeve (4) intersects the horizontal central axis of the pipeline valve (3) perpendicularly.

3. A high-pressure resistant valve casting according to claim 1, characterized in that: Two rotating parts (605) of the same size are provided and are symmetrically distributed along the horizontal central axis of the rotating parts (605). The vertical central axes of the threaded rod (602), the handle (603) and the alignment block (604) coincide.

4. A high-pressure resistant valve casting according to claim 1, characterized in that: The sealing ring (610) has two of the same size and is distributed parallel to the transverse central axis of the protrusion (609).

5. A high-pressure resistant valve casting according to claim 1, characterized in that: The threaded hole (608) is adapted to the size of the threaded rod (602), and the inner wall dimensions of the first pipe (1) and the second pipe (2) are the same.

6. A high-pressure resistant valve casting according to claim 1, characterized in that: The cross-section of the alignment block (604) is designed as an "isosceles trapezoid", and the horizontal and vertical central axes of the fixing ring (5), the first pipe (1) and the second pipe (2) coincide.

7. A high-pressure resistant valve casting according to claim 1, characterized in that: The sealing ring (610) is made of fluororubber, and the vertical center axis of the rotating seat (601) intersects the horizontal center axis of the pipeline valve (3) perpendicularly.

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