CN218913804U - Injection mold of double-loose-joint ball valve and valve rod sealing ring thereof - Google Patents
Injection mold of double-loose-joint ball valve and valve rod sealing ring thereof Download PDFInfo
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- CN218913804U CN218913804U CN202221280086.4U CN202221280086U CN218913804U CN 218913804 U CN218913804 U CN 218913804U CN 202221280086 U CN202221280086 U CN 202221280086U CN 218913804 U CN218913804 U CN 218913804U
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- valve rod
- sealing ring
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Abstract
The utility model discloses a double-loose-joint ball valve and an injection mold of a valve rod sealing ring of the double-loose-joint ball valve. The injection mold is used for manufacturing a valve rod sealing ring of the double-loose-joint ball valve, and comprises a mold body, a cavity for placing the valve rod, and a main runner, a sub-runner, wherein the cavity and the sub-runner are arranged on the mold body, and the main runner is connected with the cavity through the sub-runner. Compared with the existing mode of manually installing the O-shaped sealing ring, the double-loose-joint ball valve rod has the advantages that the sealing ring after injection is higher than the valve rod in thickness uniformly, the sealing performance is ensured to the greatest extent, and the production efficiency is high.
Description
Technical Field
The utility model relates to the technical field of sealing of water supply double-loose-joint ball valves, in particular to an injection mold of a double-loose-joint ball valve and a valve rod sealing ring thereof.
Background
In the process of assembling a valve rod, after an O-shaped sealing ring is sleeved on the valve rod, the valve rod is directly inserted into an inner hole of a main body rather hard to insert, so that a chamfer is machined at the opening part of the inner hole of the main body by using a scraper, and then the valve rod is added to insert into the inner hole, and the assembly mode is complex in process and low in efficiency. Analyzing the reason, because the valve rod is of a solid cylindrical structure, the diameter is larger, the surface is uneven due to shrinkage of the cylindrical surface and the surface of the sealing ring groove after injection molding, in order to ensure the tightness of the valve rod, if a larger compression amount is adopted, after the sealing ring is sleeved on the valve rod, the interference between the surface of the sealing ring and the inner hole of the valve rod is too large, the valve rod is very difficult to manually insert or the sealing ring can be scraped, in addition, when the valve rod is inserted into the inner hole of the main body, the O-shaped ring is extruded without space expansion, the O-shaped ring is quite laborious to insert, even the O-shaped ring cannot be inserted, and the chamfer is processed at the opening part of the inner hole of the main body by referring to the scraper, and then the valve rod is inserted into the inner hole; if the design adopts less compression volume, after the valve rod cover goes up the sealing washer, sealing washer surface and valve rod hole interference volume are little, because after moulding plastics cylinder surface and sealing washer groove surface shrink lead to the uneven director sealing washer extrusion of surface inhomogeneous, the risk of seepage can appear in sealed department.
The prior art discloses a two loose joint ball valves in ball valve technical field, which comprises a valve body, the valve body left and right sides all is provided with the connecting piece, the connecting piece is inside all to be provided with the reposition of redundant personnel chamber, the connecting piece top is provided with the oiling mouth, two sets of the connecting piece is close to one side inner wall of valve body all is provided with the recess with O type sealing ring assorted, one side that the valve body was kept away from to the connecting piece all is provided with the connecting pipe, the connecting piece top all is provided with sealed lid, can add lubricating oil to the reposition of redundant personnel intracavity through the oiling mouth, and lubricating oil flows the junction of connecting piece and valve body through the mutually supporting of reposition of redundant personnel chamber and reposition of redundant personnel hole, and the circumstances that prevents its corruption to rust takes place, very big improvement the practicality, this ball valve has greatly increased the leakproofness of connecting piece and valve body junction through the recess of the protruding cooperation connecting piece of O type sealing ring of connecting piece of connecting end and elasticity, has satisfied the user demand.
The utility model provides a two loose joint ball valves convenient to connecting tube, includes valve body, stop gear, shutoff mechanism and adjustment mechanism, the delivery port has all been seted up to the valve body both sides, the valve body is close to the both sides of delivery port and all is equipped with the pipeline, be equipped with the sealing ring of adaptation between valve body and the pipeline, the valve body is close to the nut of the periphery threaded connection of sealing ring one side has the adaptation, the top and the bottom of nut all bore and are equipped with spacing hole, the periphery of nut is equipped with the stop gear who is connected with spacing hole, the adjustment port has been seted up at the center of valve body upper half, the valve body is close to the adjustment mechanism of adjustment port, the inside center of valve body is equipped with the shutoff mechanism that runs through the adjustment port and is connected with adjustment mechanism.
The scheme still has the problem that the O type sealing washer is difficult to the direct insertion hole of main part.
Disclosure of Invention
The utility model provides a double-loose-joint ball valve, which reduces the strength of workers and improves the production efficiency compared with the existing mode of manually installing an O-shaped sealing ring.
The utility model further provides an injection mold of the valve rod sealing ring.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a two loose joint ball valves, includes ball valve main part, case, first packing ring, gland, valve rod, handle and second packing ring, wherein:
the ball receiving valve body cavity is provided with a first gasket positioning groove, the first gasket positioning groove is provided with the first gasket, the valve core is arranged in the ball receiving valve body cavity, the ball receiving valve body is provided with a valve rod hole, the valve core is provided with a groove matched with the valve rod, the bottom of the valve rod penetrates through the ball receiving valve main body through the valve rod hole and is connected with the groove of the valve core, the valve rod drives the valve core to rotate, and the handle is arranged at the top of the valve rod;
a sealing ring is arranged in the middle of the valve rod through rubber injection molding;
the gland is hollow, one side of the gland is provided with a second gasket positioning groove, the second gasket positioning groove is provided with the second gasket, and the gland is abutted to one side of the ball receiving valve main body in the fluid flowing direction.
In the scheme, the assembling sequence of the double-loose-joint ball valve is that (1) a first gasket is arranged in a first gasket positioning groove in a ball-receiving valve main body; (2) the valve rod is installed into the main body from a valve rod hole in the main body of the ball receiving valve; (3) the valve core is arranged in the inner cavity of the ball receiving valve main body, and the groove position of the valve core is matched with the valve rod; (4) placing a second gasket into a second gasket positioning groove of the gland, and installing a sealing ring; (5) abutting the gland with the second gasket and the sealing ring with the ball receiving valve main body; (6) finally, a handle is arranged.
The middle rubber of valve rod is moulded plastics and is provided with the sealing washer, even the sealing washer groove surface shrink surface is uneven, and the sealing washer after the injection is higher than the thickness of valve rod and is all very even, and the compression volume around after inserting the valve rod hole is also very even, and the leakproofness obtains the biggest assurance, can adopt 0.25 mm's rubber compression in the design moreover, and the valve rod after injecting rubber just packs into the valve rod hole very well like this.
Preferably, an external thread is arranged on the outer surface of the second gasket positioning groove of the gland, an internal thread is arranged on one side of the ball joint valve main body in the fluid flow direction, and the gland is in butt joint with the internal thread of the ball joint valve main body through the external thread in a matched mode.
Preferably, a sealing ring groove is formed in the middle of the valve rod, and the sealing ring is arranged on the sealing ring groove.
Preferably, the surface of the sealing ring is provided with a first crest and a second crest.
Preferably, the diameters of the sealing ring at the first wave crest and the second wave crest are larger than the inner diameter of a valve rod hole arranged on the ball receiving valve main body.
Preferably, the diameters of the sealing ring at the first crest and the second crest are 0.5 mm larger than the inner diameter of a valve rod hole arranged on the ball receiving valve body, so that the sealing ring forms a squeezing seal.
The double-loose-joint ball valve consists of a main body, a valve rod, a gasket, a valve core, a gland and a handle. The valve rod is provided with a valve rod hole, a gasket positioning groove and an internal thread connected with a gland, a sealing ring is arranged on the valve rod, the bottom of the valve rod is connected with a valve core to drive the valve core to rotate, the gland is internally provided with the gasket positioning groove, the outer surface of the positioning groove is an external thread connected with the main body, and the end face of the positioning groove is provided with a positioning rib and a sealing ring groove. And sequentially installing a gasket, a valve rod and a valve core into the main body, and finally screwing a gland with the gasket into the main body to finish assembly.
The injection mold of the valve rod sealing ring comprises a mold body, a cavity for placing the valve rod, a main runner and a sub-runner, wherein:
the die cavity and the flow dividing channel are both arranged on the die body, the main flow channel is connected with the die cavity through the flow dividing channel, the diameter of the die cavity is equal to the diameter of the outer circle of the valve rod, the length of the die cavity is 1mm longer than the length of the valve rod, and the valve rod is convenient to place and take and inject.
Preferably, a sealing ring groove is formed in the middle of the valve rod, and when the valve rod is placed in the cavity, the flow dividing channel is communicated with the space of the sealing ring groove.
Preferably, the split runner comprises a first split runner and a second split runner, wherein the first split runner is communicated with the main runner, the second split runner is vertically communicated with the first split runner, the second split runner is also communicated with the cavity, and a small rectangular cut-off clamp of the first split runner and the second split runner is designed into a concave-convex tearing edge groove in the middle of the runner and the product for facilitating separation of the runner and the product, so that the runner is easy to tear.
Preferably, the number of the cavities is 4, and the cavities are communicated with the main runner through a first runner and a second runner respectively.
Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:
compared with the existing mode of manually installing the O-shaped sealing ring, the double-loose-joint ball valve rod has the advantages that the sealing ring after injection is higher than the valve rod in thickness uniformly, the sealing performance is ensured to the greatest extent, and the production efficiency is high.
Drawings
Fig. 1 is a cross-sectional view of a dual loose-joint ball valve structure of the present utility model.
Fig. 2 is an exploded view of the dual loose-joint ball valve structure of the present utility model.
Fig. 3 is a schematic structural view of a valve stem.
Fig. 4 is a schematic structural view of a seal ring on a valve stem.
Fig. 5 is a schematic view showing a state in which a valve rod is inserted into a ball valve.
Fig. 6 is a schematic diagram of an injection mold of a valve stem seal ring according to an embodiment.
Fig. 7 is a schematic diagram of a molded product obtained by injection of the mold of fig. 6.
Fig. 8 is an enlarged view of section a of fig. 7.
Fig. 9 is an enlarged view of section B of fig. 7.
In the figure, 1 is a ball receiving valve body, 2 is a valve core, 3 is a first gasket, 4 is a gland, 5 is a valve rod, 51 is a sealing ring groove, 52 is a sealing ring, 521 is a first wave crest, 522 is a second wave crest, 6 is a handle, 7 is a second gasket, 8 is a die body, 9 is a die cavity, 10 is a main runner, 11 is a first sub-runner, and 12 is a second sub-runner.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a double-loose-joint ball valve, as shown in fig. 1 and 2, comprising a ball valve body 1, a valve core 2, a first gasket 3, a gland 4, a valve rod 5, a handle 6 and a second gasket 7, wherein:
the ball receiving valve comprises a ball receiving valve body 1, a valve core 2, a valve rod hole, a valve rod 5 and a handle 6, wherein the inner cavity of the ball receiving valve body 1 is provided with a first gasket positioning groove, the first gasket positioning groove is provided with a first gasket 3, the valve core 2 is arranged in the inner cavity of the ball receiving valve body 1, the ball receiving valve body 1 is provided with the valve rod hole, the valve core 2 is provided with a groove matched with the valve rod 5, the bottom of the valve rod 5 penetrates through the ball receiving valve body 1 through the valve rod hole and is connected with the groove of the valve core 2, the valve rod 5 drives the valve core 2 to rotate, and the handle 6 is arranged at the top of the valve rod 5;
the middle rubber injection molding of the valve rod 5 is provided with a sealing ring 52;
the gland 4 is hollow, one surface of the gland 4 is provided with a second gasket positioning groove, the second gasket 7 is installed in the second gasket positioning groove, and the gland 4 is abutted to one side of the ball valve main body 1 in the fluid flow direction.
In the specific implementation process, the double-loose-joint ball valve assembly sequence provided by the embodiment is that (1) a first gasket 3 is arranged in a first gasket positioning groove in a ball valve body 1; (2) fitting the valve stem 5 into the ball receiving valve body 1 from a stem hole therein; (3) the valve core 2 is arranged in the inner cavity of the ball valve body 1, and the groove position of the valve core 2 is matched with the valve rod 5; (4) placing a second gasket 7 into a second gasket positioning groove of the gland 4 and installing a sealing ring; (5) the gland 4 provided with the second gasket 7 and the sealing ring is abutted with the ball receiving valve main body 1; (6) finally, a handle 6 is installed.
The middle rubber of the valve rod 5 is provided with a sealing ring 52 by injection molding, even if the surface of the sealing ring groove is contracted and the surface is uneven, the thickness of the sealing ring 52 after injection is even higher than that of the valve rod 5, the compression amount around the valve rod after the sealing ring is inserted into a valve rod hole is even, the sealing performance is ensured to the greatest extent, and the rubber compression of 0.25mm can be adopted in design, so that the valve rod 5 after rubber injection is well installed into the valve rod hole.
Example 2
The embodiment provides a double-loose-joint ball valve, as shown in fig. 1 and 2, comprising a ball valve body 1, a valve core 2, a first gasket 3, a gland 4, a valve rod 5, a handle 6 and a second gasket 7, wherein:
the ball receiving valve comprises a ball receiving valve body 1, a valve core 2, a valve rod hole, a valve rod 5 and a handle 6, wherein the inner cavity of the ball receiving valve body 1 is provided with a first gasket positioning groove, the first gasket positioning groove is provided with a first gasket 3, the valve core 2 is arranged in the inner cavity of the ball receiving valve body 1, the ball receiving valve body 1 is provided with the valve rod hole, the valve core 2 is provided with a groove matched with the valve rod 5, the bottom of the valve rod 5 penetrates through the ball receiving valve body 1 through the valve rod hole and is connected with the groove of the valve core 2, the valve rod 5 drives the valve core 2 to rotate, and the handle 6 is arranged at the top of the valve rod 5;
the middle rubber injection molding of the valve rod 5 is provided with a sealing ring 52;
the gland 4 is hollow, one surface of the gland 4 is provided with a second gasket positioning groove, the second gasket 7 is installed in the second gasket positioning groove, and the gland 4 is abutted to one side of the ball valve main body 1 in the fluid flow direction.
The outer surface of the second gasket positioning groove of the gland 4 is provided with external threads, one side of the ball receiving valve body 1 in the fluid flowing direction is provided with internal threads, and the gland 4 is in butt joint with the internal threads of the ball receiving valve body 1 through the matching of the external threads.
As shown in fig. 3, a seal ring groove 51 is provided in the middle of the valve rod 5, and the seal ring 52 is provided on the seal ring groove 51.
As shown in fig. 4, the surface of the sealing ring 52 is provided with a first peak 521 and a second peak 522.
The diameters of the sealing ring 52 at the first peak 521 and the second peak 522 are larger than the inner diameter of the valve stem hole provided in the ball receiving valve body 1.
The diameters of the sealing ring 52 at the first peak 521 and the second peak 522 are 0.5 mm larger than the inner diameter of the valve stem hole provided in the ball receiving valve body 1, so as to form a squeeze seal, as shown in fig. 5.
In the specific implementation process, the double-loose-joint ball valve assembly sequence provided by the embodiment is that (1) a first gasket 3 is arranged in a first gasket positioning groove in a ball valve body 1; (2) fitting the valve stem 5 into the ball receiving valve body 1 from a stem hole therein; (3) the valve core 2 is arranged in the inner cavity of the ball valve body 1, and the groove position of the valve core 2 is matched with the valve rod 5; (4) placing a second gasket 7 into a second gasket positioning groove of the gland 4 and installing a sealing ring; (5) the gland 4 provided with the second gasket 7 and the sealing ring is screwed into the ball valve body 1 to be abutted with the internal thread of the body 1 through the external thread; (6) finally, a handle 6 is installed.
The middle rubber of the valve rod 5 is provided with a sealing ring 52 by injection molding, even if the surface of the sealing ring groove is contracted and the surface is uneven, the thickness of the sealing ring 52 after injection is even higher than that of the valve rod 5, the compression amount around the valve rod after the sealing ring is inserted into a valve rod hole is even, the sealing performance is ensured to the greatest extent, and the rubber compression of 0.25mm can be adopted in design, so that the valve rod 5 after rubber injection is well installed into the valve rod hole.
Example 3
The present embodiment provides an injection mold for a valve stem seal ring as described in embodiment 1 and embodiment 2, comprising a mold body 8, a cavity 9 for placing a valve stem 5, a main runner 10, and a sub-runner, wherein:
the cavity 9 and the diversion channel are both arranged on the die body 8, and the main channel 10 is connected with the cavity 9 through the diversion channel.
The middle part of the valve rod 5 is provided with a sealing ring groove 51, and when the valve rod 5 is placed in the cavity 9, the sub-runner is communicated with the space of the sealing ring groove 51.
The split runner comprises a first split runner 11 and a second split runner 12, wherein the first split runner 11 is communicated with the main runner 10, the second split runner 12 is vertically communicated with the first split runner 11, and the second split runner 12 is also communicated with the cavity 9.
As shown in fig. 7, the total number of the cavities 9 is 4, and the cavities are respectively communicated with the main runner 10 through a first runner 11 and a second runner 12.
The diameter of the cavity 9 in the embodiment is equal to the diameter of the outer circle of the valve rod 5, and the length of the cavity is 1mm longer than that of the valve rod 5, so that the valve rod 5 is convenient to take and inject. In this embodiment, the injection molded product is shown in fig. 7, the cut-off clips of the first sub-runner 11 and the second sub-runner 12 are small in rectangle, as shown in fig. 8, and in order to facilitate separation of the runners from the product, a concave-convex tearing groove is designed between the runners and the product, as shown in fig. 9, so that the runners are easy to tear.
The same or similar reference numerals correspond to the same or similar components;
the terms describing the positional relationship in the drawings are merely illustrative, and are not to be construed as limiting the present patent;
it is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The utility model provides a two loose joint ball valves, its characterized in that, including connecing ball valve main part (1), case (2), first packing ring (3), gland (4), valve rod (5), handle (6) and second packing ring (7), wherein:
the ball receiving valve comprises a ball receiving valve body (1), wherein a first gasket positioning groove is formed in the inner cavity of the ball receiving valve body (1), a first gasket (3) is arranged in the first gasket positioning groove, a valve core (2) is arranged in the inner cavity of the ball receiving valve body (1), a valve rod hole is formed in the ball receiving valve body (1), a groove matched with the valve rod (5) is formed in the valve core (2), the bottom of the valve rod (5) penetrates through the ball receiving valve body (1) through the valve rod hole and is connected with the groove of the valve core (2), the valve rod (5) drives the valve core (2) to rotate, and a handle (6) is arranged at the top of the valve rod (5);
a sealing ring (52) is arranged in the middle of the valve rod (5) through rubber injection molding;
the gland (4) is hollow, a second gasket positioning groove is formed in one face of the gland (4), the second gasket (7) is arranged in the second gasket positioning groove, and the gland (4) is abutted to one side of the ball-catching valve main body (1) in the fluid flow direction.
2. The double-loose-joint ball valve according to claim 1, wherein an external thread is arranged on the outer surface of the second gasket positioning groove of the gland (4), an internal thread is arranged on one side of the ball receiving valve body (1) in the fluid flow direction, and the gland (4) is abutted with the internal thread of the ball receiving valve body (1) through the external thread.
3. The double loose-joint ball valve according to claim 1, characterized in that a sealing ring groove (51) is arranged in the middle of the valve rod (5), and the sealing ring (52) is arranged on the sealing ring groove (51).
4. A double-union ball valve according to claim 3, characterized in that the surface of the sealing ring (52) is provided with a first crest (521) and a second crest (522).
5. The double-union ball valve according to claim 4, wherein the diameter of the sealing ring (52) at the first peak (521) and the second peak (522) is larger than the inner diameter of the valve stem hole provided by the ball-catching valve body (1).
6. The double-union ball valve according to claim 5, wherein the diameter of the sealing ring (52) at the first peak (521) and the second peak (522) is 0.5 mm larger than the inner diameter of the stem hole provided by the ball-catching valve body (1).
7. An injection mold for sealing rings, which is suitable for sealing rings in a double loose joint ball valve according to claim 6, and is characterized by comprising a mold body (8), a cavity (9) for placing a valve rod (5), a main runner (10), and a sub-runner, wherein:
the die cavity (9) and the split runner are both arranged on the die body (8), and the main runner (10) is connected with the die cavity (9) through the split runner.
8. The injection mold of the sealing ring according to claim 7, characterized in that a sealing ring groove (51) is arranged in the middle of the valve rod (5), and when the valve rod (5) is placed in the cavity (9), the flow dividing channel is communicated with the space of the sealing ring groove (51).
9. The injection mold of a sealing ring according to claim 8, characterized in that the flow divider comprises a first flow divider (11) and a second flow divider (12), wherein the first flow divider (11) communicates with the main flow divider (10), the second flow divider (12) communicates perpendicularly with the first flow divider (11), and the second flow divider (12) also communicates with the cavity (9).
10. Injection mold for sealing rings according to claim 9, characterized in that the number of cavities (9) is 4, communicating with the main runner (10) through a first runner (11) and a second runner (12), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221280086.4U CN218913804U (en) | 2022-05-25 | 2022-05-25 | Injection mold of double-loose-joint ball valve and valve rod sealing ring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221280086.4U CN218913804U (en) | 2022-05-25 | 2022-05-25 | Injection mold of double-loose-joint ball valve and valve rod sealing ring thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913804U true CN218913804U (en) | 2023-04-25 |
Family
ID=86046838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221280086.4U Active CN218913804U (en) | 2022-05-25 | 2022-05-25 | Injection mold of double-loose-joint ball valve and valve rod sealing ring thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913804U (en) |
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2022
- 2022-05-25 CN CN202221280086.4U patent/CN218913804U/en active Active
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