TWI599735B - Composite valve seat, manufacturing method thereof, and pressure container using the same - Google Patents

Description

Composite valve seat, manufacturing method thereof and pressure vessel using same

The invention relates to a composite pressure vessel, and provides a pressure vessel, a composite valve seat which can effectively reduce the processing cost, and has a relatively stable and reliable structure, a manufacturing method thereof and a pressure vessel using the same.

According to the current situation, the use of fuel by the Chinese people is mainly based on natural gas and liquefied petroleum gas. The liquefied petroleum gas system is formed by mixing propane and butane which are precipitated in crude oil refining or natural gas treatment, and is under normal temperature and normal pressure. The gas can be liquefied by pressurization or cooling, and is usually pressurized into a gas cylinder of a specific volume for use by the user, so it is also called liquefied gas or barreled gas.

Because the gas cylinders used in traditional barrel gas are quite heavy, they are mostly sold, transported and filled by gas. However, due to the ageing of the domestic labor force, the work is willing to do less and less, plus Metallic steel cylinders have the problem of high temperature gas explosion, rust and gas leakage and content problems that cannot be displayed, and the invention of composite pressure vessels.

Furthermore, in order to facilitate the replacement of the commercially available liquefied gas or barreled gas containers, a switch gas valve is often installed. Since the conventional gas cylinder is advantageous for direct processing of the tooth type, it is not too much when the assembled switch valve is locked. Problem; however, composite pressure vessels have a corresponding design for assembling a metal valve seat on the container body because of the disadvantageous direct processing of the tooth form.

As shown in Fig. 1, it is a cross-sectional view of a partial structure of a composite pressure vessel equipped with a metal valve seat (refer to the domestic patent document TW M513316U "Pressure Vessel and Its Leakproof Valve Group"), the metal valve thereof The seat 10 has a central hole 11 in which an inner threaded section 12 for locking the valve body 31 is formed, and a lower stop 13 is provided below the inner threaded section 12, and a flange 20 is provided. The mold is molded out while being overlaid on the outside of the metal valve seat 10 and extending over the lower stop portion 13.

The metal valve seat 10 is engaged with the body of the pressure vessel 32 through the flange 20 to form a corresponding design for assembling a metal valve seat 10 on the body of the pressure vessel 32. Further, similarly, the conventional metal valve seat 10 utilizes an increased surface area. The way to strengthen the engagement with the flange 20; for example, the outer periphery of the metal valve seat 10 is designed to be polygonal, or the design of the wedge or groove is added.

However, such an approach not only increases the processing cost of the metal valve seat 10, but also affects the fluidity of the flange material, and does not allow the flange material to actually enter the expected space when it is in a molten state, so that it is often unpredictable. The position creates a wrap, which not only fails to achieve the desired joint effect of the metal valve seat 10 and the flange 20, but is more likely to form a gas leakage gap 21 between the metal valve seat 10 and the flange 20.

In view of the above, an object of the present invention is to provide a composite valve seat which can effectively reduce the processing cost and which has a relatively stable and reliable structure, a manufacturing method thereof and a pressure vessel using the same.

The composite valve seat of the present invention comprises: a metal body having a disc portion, an upper cylindrical portion protruding from a center of the disc surface of the disc portion, and a relatively convex portion disposed under the disc portion a lower cylindrical portion at the center of the disk surface, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, wherein an inner screw segment is disposed at a portion of the central hole corresponding to the upper cylindrical portion a ring neck portion is recessed around the outer end of the upper end portion of the upper cylindrical portion, and the disk portion is further provided with a plurality of perforations penetrating the upper and lower disc surfaces thereof, the disc portion and the upper cylindrical portion and the lower cylindrical portion a corner between the corners and a curved arc; a polymer bushing coupled to the metal body by injection molding, having at least a periphery of the upper portion of the disk portion and a periphery of the lower cylindrical portion a joint portion corresponding to the lap joint portion of the neck portion, a plurality of anti-rotation portions corresponding to each of the through holes, and a corresponding convex portion at a position corresponding to the tail end portion of the upper cylindrical portion a shoulder portion around the periphery of the set; and the metal body is in advance at a portion corresponding to the polymer bushing Coating at least one layer of adhesive.

By using the above structural features, the composite valve seat disclosed in the present invention can greatly reduce the processing cost because the metal body does not need to have a complicated surface configuration, and utilizes the perforation of the metal body and the disk portion and the upper and lower portions. The cylindrical portion has a curved arc angle design. When the polymer bush is injection molded, the molten polymer material can surely enter the expected space, and the metal body and the polymer bushing are acted upon by the adhesive. A relatively more stable and reliable sealing and sealing effect is formed between them.

According to the above structural feature, the metal system is provided with a relatively reduced inner diameter stop at a position between the upper cylindrical portion and the lower cylindrical portion of the central hole, the stop portion a bottom surface of the ring and a first fitting groove, wherein the central hole corresponds to a section between the tail end of the lower cylindrical portion and the stopping portion, and a second fitting groove is provided; the polymer bushing is Integrally extending the end portion of the lower cylindrical portion to the section between the blocking portions, and further forming a first fitting portion corresponding to the first fitting groove, and correspondingly filling the same a second fitting portion of the second fitting groove.

The peripheral contour of the shoulder is polygonal.

The thickness of the disk portion is gradually reduced from the inner side to the outer side.

The thickness of the disc portion is gradually reduced from the inner side to the outer side; the peripheral contour of the shoulder portion is polygonal.

The material of the polymer bushing may be one of polyethylene (PE) or high density poly ethylene (HDPE).

The at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy).

The method for manufacturing a composite valve seat according to the present invention comprises the steps of: providing a metal body having a disk portion and an upper cylindrical portion protruding from a center of the disk surface of the disk portion; a lower cylindrical portion that is oppositely disposed at a center of the lower disk surface of the disk portion, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, wherein the central hole corresponds to a section of the upper cylindrical portion An inner screw segment is disposed, and a round neck portion is recessed on a periphery of the tail end of the upper cylindrical portion, and the disk portion is further provided with a plurality of perforations extending through the upper and lower disc surfaces thereof, the disc portion and the upper portion a corner between the cylindrical portion and the lower cylindrical portion is curved; an injection molding die is provided, the injection molding die is provided with a cavity for receiving the metal body, and the cavity is formed to correspond to a disc forming portion, a forming portion forming portion of the upper cylindrical portion and the lower cylindrical portion, and a shoulder forming portion corresponding to the position of the upper cylindrical portion biased toward the trailing end; sizing, the metal The body is placed in the injection molding mold to be positioned, and then at least on the disc portion and the upper circle of the metal body And a surface of the lower cylindrical portion, the neck portion and each of the perforations are covered with at least one layer of adhesive; the polymer bush is injection molded, and the molten polymer material is injected into the cavity of the injection molding die, to be polymer material After cooling and hardening, a polymer bushing can be coated on the periphery of the metal body.

According to the above technical feature, the metal system is provided at a position between the upper cylindrical portion and the lower cylindrical portion, and a stop portion having a relatively reduced inner diameter is provided. a bottom surface of the ring and a first fitting groove, wherein the central hole corresponds to a section between the tail end of the lower cylindrical portion and the stopping portion, and a second fitting groove is provided; the polymer bushing is Integrally extending the end portion of the lower cylindrical portion to the section between the blocking portions, and further forming a first fitting portion corresponding to the first fitting groove, and correspondingly filling the same a second fitting portion of the second fitting groove.

The inner circumference of the shoulder forming section is polygonal.

The thickness of the disk portion is gradually reduced from the inner side to the outer side.

The thickness of the disc portion is gradually reduced from the inner side to the outer side; the inner circumference of the shoulder forming portion is polygonal.

The material of the polymer bushing may be one of polyethylene (PE) or high density poly ethylene (HDPE).

The at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy).

The pressure vessel disclosed in the present invention has a container body formed by processing a composite material, and the container system is provided with a filling port, and a composite valve seat is sealed at the filling port; the composite valve seat is attached to the composite valve seat The metal body is coated with a polymer bushing; wherein: the metal body has a disk portion, an upper cylindrical portion that is oppositely disposed at a center of the disk surface of the disk portion, and a relatively convex portion is disposed on the circle a lower cylindrical portion at the center of the lower disk surface of the disk portion, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, and an inner screw segment is disposed at a portion of the central hole corresponding to the upper cylindrical portion. a ring necking portion is recessed around the outer end of the upper cylindrical portion, and the disk portion is further provided with a plurality of perforations penetrating the upper and lower disc surfaces thereof, the disc portion and the upper cylindrical portion and the lower cylinder The corner between the portions is curved and curved; the polymer bushing is coupled to the metal body by injection molding, and has a coating at least around the periphery of the disk portion, the periphery of the upper cylindrical portion, and the lower circle a joint portion at the periphery of the tubular portion, a lap joint corresponding to the neck portion, and a complex Corresponding to the anti-rotation portion of each of the perforations, and a shoulder portion corresponding to the outer end portion of the upper cylindrical portion to protrude from the periphery of the assembly portion; and the metal body is corresponding to the height The portion where the molecular bushing contacts is pre-coated with at least one layer of the adhesive; the container body and the corresponding portion embedded in the polymer bushing correspond to the sandwich structure between the periphery of the disk portion and the shoulder portion.

According to the above structural feature, the container system has a transparent blow-molded inner liner, and the outer periphery of the inner liner is coated with at least one structural reinforcing layer solidified by the composite material.

According to the above structural feature, the metal system is provided with a relatively reduced inner diameter stop at a position between the upper cylindrical portion and the lower cylindrical portion of the central hole, the stop portion a bottom surface of the ring and a first fitting groove, wherein the central hole corresponds to a section between the tail end of the lower cylindrical portion and the stopping portion, and a second fitting groove is provided; the polymer bushing is Integrally extending the end portion of the lower cylindrical portion to the section between the blocking portions, and further forming a first fitting portion corresponding to the first fitting groove, and correspondingly filling the same a second fitting portion of the second fitting groove.

The peripheral contour of the shoulder is polygonal.

The thickness of the disk portion is gradually reduced from the inner side to the outer side.

The thickness of the disc portion is gradually reduced from the inner side to the outer side; the peripheral contour of the shoulder portion is polygonal.

The material of the polymer bushing may be one of polyethylene (PE) or high density poly ethylene (HDPE).

The at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy).

The invention not only discloses a composite valve seat which effectively reduces the processing cost and has a relatively stable and reliable structure, but also discloses a method for manufacturing the composite valve seat, and a pressure vessel using the composite valve seat; The related art is applied to a composite pressure vessel production line to produce a relatively stable and reliable composite pressure vessel with relatively low processing cost.

The invention mainly provides a composite valve seat which can effectively reduce the processing cost and has a relatively stable and reliable structure, a manufacturing method thereof and a pressure vessel using the same, as shown in FIG. 2 and FIG. 3, the composite of the present invention The valve seat 40 includes a metal body 41 and a polymer bushing 43 which is oppositely coated on the periphery of the metal body 41. Please refer to FIGS. 2 to 5 together, wherein:

The metal body 41 has a disk portion 411, an upper cylindrical portion 412 protruding from the center of the disk surface of the disk portion 411, and a lower portion at a center of the disk surface of the disk portion 411. The cylindrical portion 413 has a central hole 421 penetrating the upper cylindrical portion 412 and the lower cylindrical portion 413, and an inner thread portion 414 is disposed at a portion of the central hole 421 corresponding to the upper cylindrical portion 412. a ring necking portion 422 is defined in a periphery of the rear end of the upper cylindrical portion 412. The disk portion 411 is further provided with a plurality of through holes 423 extending through the upper and lower disk surfaces thereof, and the disk portion and the upper cylindrical portion The corner between the lower cylindrical portions is curved and curved.

The polymer bushing 43 is coupled to the metal body 41 by injection molding, and has a combination of at least a periphery of the disk portion 411, a periphery of the upper cylindrical portion 412, and a periphery of the lower cylindrical portion 413. a portion 431 corresponding to the overlapping portion 432 of the necking portion 422, a plurality of anti-rotation portions 433 corresponding to the perforations 423, and a corresponding position corresponding to the end of the upper cylindrical portion 412 The shoulder 434 of the periphery of the set of joints 431 is relatively protruded.

And the metal body 41 is pre-coated with at least one layer of the adhesive 44 at a portion corresponding to the polymer bushing 43. In practice, the at least one layer of the adhesive 44 may be a polyurethane (PU). Or one of epoxy resins (Epoxy); the metal body 41 may be formed of copper or an alloy thereof; and the material of the polymer bushing 43 may be polyethylene (PE) or high density polyethylene ( HDPE) one of them.

In principle, the composite valve seat 40 of the present invention is joined to the container body 51 of the pressure vessel 50 by the assembly portion 431 of the polymer bushing 43 as shown in FIGS. 6 and 7 as shown in FIG. The integral composite valve seat 40 forms a correspondingly embedded and subsequent sandwiching structure between the periphery of the disc portion 411 and the shoulder portion 434 thereof for the pressure vessel 50, and can be relatively more positive and reliable. The method improves the assembly and joint effect of the composite valve seat 40 and the pressure vessel 50.

In particular, the entire metal body 41 does not need to be processed with a complicated surface configuration, so that the processing cost can be greatly reduced, and the through hole 423 of the metal body 41 and the disk portion 411 and the upper and lower cylindrical portions 412, 413 are bent. The arc-shaped corner design allows the molten polymer material to enter the desired space when the polymer bushing 43 is injection molded, and forms the metal body 41 and the polymer bushing 43 under the action of the adhesive 44. Relatively more stable and reliable sealing and sealing effect.

In the embodiment of the present invention, the metal body 41 is disposed at a position between the upper cylindrical portion 412 and the lower cylindrical portion 413, and is provided with an inner diameter. The first recessed portion 424 is disposed on the bottom surface of the stop portion 415 , and the central hole 421 corresponds to the end between the trailing end of the lower cylindrical portion 413 and the stop portion 415 . At the section, a second fitting groove 425 is provided.

The polymer bushing 43 integrally covers the section extending from the rear end of the lower cylindrical portion 413 to the blocking portion 415, and is further formed with a corresponding filling portion of the first fitting groove 424. A fitting portion 435 and a second fitting portion 436 corresponding to the second fitting groove 425 are provided to increase the structural strength of the integral composite valve seat 40.

Moreover, the peripheral contour of the shoulder portion 434 is polygonal, so as to be a configuration that facilitates the clamping of the instrument, and the valve member (not shown) is conveniently mounted on the composite valve seat 40; The thickness of the disc portion 411 is gradually reduced from the inner side to the outer side, which is more conducive to the flow of the polymer material; of course, the integral composite valve seat 40 is further thickened by the inner side of the disc portion 411. It is better to gradually reduce to the outside, and the peripheral contour of the shoulder 434 is a polygonal structure.

The method for manufacturing the composite valve seat of the present invention is as shown in Fig. 8, and includes steps S11 to S14 for providing a metal body, providing an injection molding die, sizing, and polymer bushing injection molding. The manners that may be implemented in each step are described below in conjunction with Figures 3, 8, and 9.

In the step of providing a metal body, the metal body 41 has a disk portion 411, an upper cylindrical portion 412 protruding from the center of the disk surface of the disk portion 411, and a corresponding convex portion on the disk portion. The lower cylindrical portion 413 at the center of the lower surface of the 411 has a central hole 421 penetrating the upper cylindrical portion 412 and the lower cylindrical portion 413, and the center hole 421 is corresponding to the section of the upper cylindrical portion 412. An inner threaded portion 414 is defined in the outer periphery of the rear end of the upper cylindrical portion 412, and a plurality of constricted portions 422 are formed on the outer peripheral portion of the upper cylindrical portion 412. The disc portion 411 is further provided with a plurality of through holes 423 extending through the upper and lower disc surfaces thereof. The angle between the 411 and the upper cylindrical portion 412 and the lower cylindrical portion 413 is curved.

In the step of providing an injection molding die, the injection molding die 60 is provided with a cavity 61 for accommodating the metal body 41, and the cavity 61 is formed to correspond to the disk portion 411 and the upper cylindrical portion 412. And an assembly forming section 611 of the lower cylindrical portion 413, and a shoulder forming section 612 corresponding to the position of the upper cylindrical portion 412 biased toward the trailing end.

In the sizing step, the metal body 41 is placed in the injection molding die 60 to be positioned, and then at least the disk portion 411, the upper cylindrical portion 412, and the lower cylindrical portion 413 of the metal body 41 are necked. The surface of the portion 422 and each of the perforations 423 is coated with at least one layer of an adhesive 44. In practice, the at least one layer of the adhesive 44 may be one of polyurethane (PU) or epoxy (Epoxy).

In the polymer bushing injection molding step, the molten polymer material is injected into the cavity 61 of the injection molding die 60, and after the polymer material is cooled and hardened, the outer periphery of the metal body 41 can be coated with a high height. The molecular bushing 43; in implementation, the material of the polymer bushing may be one of polyethylene (PE) or high density polyethylene (HDPE).

In the method of manufacturing the composite valve seat of the present invention, the metal body 41 is disposed at a position between the upper cylindrical portion 412 and the lower cylindrical portion 413. a stop portion 415 having a relatively reduced diameter, a bottom surface of the stop portion 415 is annularly provided with a first fitting groove 424, and the center hole 421 corresponds to the end of the lower cylindrical portion 413 and the stop portion 415 a second fitting groove 425 is disposed at the section; the polymer bushing 43 integrally covers the section extending the trailing end of the lower cylindrical portion 413 to the stopping portion 415, and is formed with another Corresponding to the first fitting portion 435 that is filled in the first fitting groove 424 and the second fitting portion 436 that is correspondingly filled in the second fitting groove 425.

Furthermore, the inner circumference of the shoulder forming section 612 may have a polygonal shape; the thickness of the disc portion 411 is gradually reduced from the inner side to the outer side; similarly, the thickness of the disc portion 411 is further It is preferred that the inner side is gradually tapered outward, and the inner circumference of the shoulder forming section 612 is polygonal.

As shown in FIG. 3, FIG. 6 and FIG. 7, the pressure vessel 50 of the present invention has a container body 51 which is formed by processing a composite material, and the container body 51 is provided with a filling port 511 at the filling port. 511 is connected to seal a composite valve seat 40; the composite valve seat 40 is wrapped around a metal body 41 with a polymer bushing 43; wherein:

The metal body 41 has a disk portion 411, an upper cylindrical portion 412 protruding from the center of the disk surface of the disk portion 411, and a lower portion at a center of the disk surface of the disk portion 411. The cylindrical portion 413 has a central hole 421 penetrating the upper cylindrical portion 412 and the lower cylindrical portion 413, and an inner thread portion 414 is disposed at a portion of the central hole 421 corresponding to the upper cylindrical portion 412. a ring necking portion 422 is defined in a periphery of the rear end of the upper cylindrical portion 412. The disk portion 411 is further provided with a plurality of through holes 423 extending through the upper and lower disk surfaces thereof, and the disk portion and the upper cylindrical portion The corner between the lower cylindrical portions is curved and curved.

The polymer bushing 43 is coupled to the metal body 41 by injection molding, and has a combination of at least a periphery of the disk portion 411, a periphery of the upper cylindrical portion 412, and a periphery of the lower cylindrical portion 413. a portion 431 corresponding to the overlapping portion 432 of the necking portion 422, a plurality of anti-rotation portions 433 corresponding to the perforations 423, and a corresponding position corresponding to the end of the upper cylindrical portion 412 The shoulder 434 of the periphery of the set of joints 431 is relatively protruded.

And the metal body 41 is pre-coated with at least one layer of the adhesive 44 at a portion corresponding to the polymer bushing 43; and the container body 51 is correspondingly embedded in the assembly portion 431 of the polymer bushing 43. Corresponding to the sandwiching structure between the periphery of the disc portion 411 and the shoulder portion 434; in practice, the container body 51 has a liner (not shown) formed by a through-blowing type, (Fig.) The outer cladding is bonded to at least one structural reinforcing layer (not shown) which is solidified by the composite material.

In the pressure vessel 50 of the present invention, the metal body 41 is disposed at a position between the upper cylindrical portion 412 and the lower cylindrical portion 413, and a relative inner diameter is reduced. a stop portion 415, a bottom surface of the stop portion 415 and a first fitting groove 424, wherein the central hole 421 corresponds to a section between the tail end of the lower cylindrical portion 413 and the stop portion 415 A second fitting groove 425 is provided.

The polymer bushing 43 integrally covers the section extending from the rear end of the lower cylindrical portion 413 to the blocking portion 415, and is further formed with a corresponding filling portion of the first fitting groove 424. a fitting portion 435 corresponding to the second fitting portion 436 of the second fitting groove 425; the material of the polymer bushing 43 may be polyethylene (PE) or high density polyethylene ( One of HDPE); the at least one layer of the adhesive 44 may be one of polyurethane (PU) or epoxy (Epoxy).

Similarly, the outer contour of the shoulder portion 434 is polygonal; the thickness of the disc portion 411 is gradually reduced from the inner side to the outer side, which is more conducive to the flow of the polymer material; of course, the entire pressure vessel 50, Preferably, the thickness of the disk portion 411 is gradually reduced outward from the inner side, and the peripheral contour of the shoulder portion 434 is preferably a polygonal structure.

Compared with the conventional technology, the present invention not only discloses a composite valve seat which is effective in reducing the processing cost and relatively stable and reliable in structure, but also discloses a method for manufacturing the composite valve seat, and the use of the composite valve. The pressure vessel of the seat; especially suitable for applying the related technology to the composite pressure vessel production line, to manufacture a relatively stable and reliable composite pressure vessel with relatively low processing cost.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.

[Prior technology]
10‧‧‧Metal seat
11‧‧‧ center hole
12‧‧‧Threaded section
13‧‧‧Bottom stop
20‧‧‧Flange
21‧‧‧ gap
31‧‧‧ valve body
32‧‧‧ Pressure vessel
[this invention]
40‧‧‧Composite seat
41‧‧‧Metal body
411‧‧‧Disc
412‧‧‧Upper cylinder
413‧‧‧ lower cylinder
414‧‧‧ internal thread segments
415‧‧‧stops
421‧‧‧ center hole
422‧‧‧neck
423‧‧‧Perforation
424‧‧‧First mating slot
425‧‧‧Second fitting groove
43‧‧‧Polymer bushing
431‧‧‧Team
432‧‧‧ lap joint
433‧‧‧Anti-rotation department
434‧‧‧ shoulder
435‧‧‧First mating department
436‧‧‧Second fitting
44‧‧‧Binder
50‧‧‧ Pressure vessel
51‧‧‧ container body
511‧‧‧ filling port
60‧‧‧Injection molding die
61‧‧‧ cavity
611‧‧‧Group forming section
612‧‧‧Shoulder forming section
S11~S14‧‧‧Steps

Figure 1 is a partial cross-sectional view of a conventional composite pressure vessel with a metal valve seat mounted thereon. Fig. 2 is a perspective view showing the appearance of the composite valve seat of the present invention. Figure 3 is a cross-sectional view showing the structure of the composite valve seat of the present invention. Fig. 4 is a perspective view showing the appearance of a metal body in the present invention. Fig. 5 is a cross-sectional view showing the structure of a metal body in the present invention. Fig. 6 is a perspective view showing the appearance of a pressure vessel using the composite valve seat of the present invention. Figure 7 is a cross-sectional view showing a partial structure of a pressure vessel using the composite valve seat of the present invention. Figure 8 is a basic flow chart of a method of manufacturing a composite valve seat of the present invention. Fig. 9 is a schematic view showing the structure of a cavity of the injection molding die disclosed in the method for manufacturing a composite valve seat of the present invention.

40‧‧‧Composite seat

41‧‧‧Metal body

411‧‧‧Disc

412‧‧‧Upper cylinder

413‧‧‧ lower cylinder

414‧‧‧ internal thread segments

415‧‧‧stops

421‧‧‧ center hole

422‧‧‧neck

423‧‧‧Perforation

424‧‧‧First mating slot

425‧‧‧Second fitting groove

43‧‧‧Polymer bushing

431‧‧‧Team

432‧‧‧ lap joint

433‧‧‧Anti-rotation department

434‧‧‧ shoulder

435‧‧‧First mating department

436‧‧‧Second fitting

44‧‧‧Binder

Claims (22)

A composite valve seat comprising: a metal body having a disc portion, an upper cylindrical portion protruding from a center of the disc surface of the disc portion, and a relatively protruding portion at a center of the lower disc surface of the disc portion a lower cylindrical portion, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, wherein an inner screw portion is disposed at a portion of the central hole corresponding to the upper cylindrical portion, and the upper cylindrical portion is disposed on the upper cylindrical portion a ring neck portion is recessed on the periphery of the tail end, and the disk portion is further provided with a plurality of through holes penetrating the upper and lower disk surfaces thereof, a corner between the disk portion and the upper cylindrical portion and the lower cylindrical portion. a polymer bushing, which is coupled to the metal body by injection molding, and has a joint portion covering at least a periphery of the disk portion, a periphery of the upper cylindrical portion, and a periphery of the lower cylindrical portion. Correspondingly, a lap joint portion corresponding to the neck portion, a plurality of anti-rotation portions corresponding to each of the through holes, and a corresponding protruding portion at a position corresponding to a rear end portion of the upper cylindrical portion a peripheral shoulder; and the metal body is pre-coated to the portion corresponding to the polymer bushing to A layer of adhesive. The composite valve seat according to claim 1, wherein the metal system is provided with a relatively narrow inner diameter at a position of the center hole between the upper cylindrical portion and the lower cylindrical portion. a first fitting groove is formed on the bottom surface of the stopping portion, and a second fitting groove is formed in the central hole corresponding to a section between the tail end of the lower cylindrical portion and the stopping portion. The polymer bushing integrally covers the section extending from the rear end of the lower cylindrical portion to the blocking portion, and is further formed with a first fitting portion corresponding to the first fitting groove. And correspondingly filling the second fitting portion of the second fitting groove. The composite valve seat of claim 1 or 2, wherein the peripheral contour of the shoulder is polygonal. The composite valve seat according to claim 1 or 2, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side. The composite valve seat according to claim 1 or 2, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side; the peripheral contour of the shoulder portion is polygonal. The composite valve seat according to claim 1 or 2, wherein the material of the polymer bushing may be one of polyethylene (PE) or high density poly ethylene (HDPE). . The composite valve seat according to claim 1 or 2, wherein the at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy). A composite valve seat manufacturing method comprises the following steps: providing a metal body having a disc portion, an upper cylindrical portion protruding from a center of the disc surface of the disc portion, and a a lower cylindrical portion that is convexly disposed at a center of the lower disk surface of the disk portion, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, wherein the central hole corresponds to a section of the upper cylindrical portion An inner threaded section is provided with a round necking portion on the outer periphery of the tail end of the upper cylindrical portion, and the disc portion is further provided with a plurality of perforations penetrating the upper and lower disc surfaces thereof, the disc portion and the upper cylinder a corner between the portion and the lower cylindrical portion and curved; providing an injection molding die, the injection molding die being provided with a cavity for receiving the metal body, the cavity forming a corresponding to the circle a forming portion of the disk portion, the upper cylindrical portion and the lower cylindrical portion, and a shoulder forming portion corresponding to the position of the upper cylindrical portion biased toward the trailing end; sizing, placing the metal body Inserting the injection mold into the positioning, and then at least the disc portion and the upper cylinder of the metal body And coating the surface of the lower cylindrical portion, the neck portion and each of the perforations with at least one layer of adhesive; the polymer bush is injection molded, and the molten polymer material is injected into the cavity of the injection molding die, and the polymer material is to be used. After cooling and hardening, a polymer bushing can be coated on the periphery of the metal body. The method of manufacturing a composite valve seat according to claim 8, wherein the metal system is provided with a relatively reduced inner diameter at a position of the center hole between the upper cylindrical portion and the lower cylindrical portion. a stop portion, a bottom surface of the stop portion and a first fitting groove, wherein the central hole is provided with a second insert corresponding to a section between the tail end of the lower cylindrical portion and the stop portion The polymer bushing integrally covers the section extending from the rear end of the lower cylindrical portion to the blocking portion, and is further formed with a first insert correspondingly filled in the first fitting groove The joint portion is correspondingly filled with the second fitting portion of the second fitting groove. The method of manufacturing a composite valve seat according to claim 8 or 9, wherein the inner circumference of the shoulder forming section is polygonal. The method of manufacturing a composite valve seat according to claim 8 or 9, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side. The composite valve seat manufacturing method according to claim 8 or 9, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side; the inner circumference of the shoulder forming portion is polygonal. The method of manufacturing a composite valve seat according to claim 8 or 9, wherein the material of the polymer bushing is one of polyethylene (PE) or high density poly ethylene (HDPE). By. The method of manufacturing a composite valve seat according to claim 8 or 9, wherein the at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy). A pressure vessel has a container body formed by processing a composite material, the container system is provided with a filling port, and a composite valve seat is sealed at the filling port; the composite valve seat is wrapped around a metal body Covering a polymer bushing; wherein: the metal body has a disc portion, an upper cylindrical portion that is oppositely disposed at a center of the disc surface of the disc portion, and a opposite convex portion that is disposed at a center of the lower disc surface of the disc portion a lower cylindrical portion, and a central hole penetrating the upper cylindrical portion and the lower cylindrical portion, and an inner screw segment is disposed at a portion of the central hole corresponding to the upper cylindrical portion. a round neck portion is recessed around the outer end of the tubular portion, and the disk portion is further provided with a plurality of perforations extending through the upper and lower disc surfaces thereof, and between the disc portion and the upper cylindrical portion and the lower cylindrical portion The polymer bushing is coupled to the metal body by injection molding, and has a coating at least around the periphery of the disk portion, the periphery of the upper cylindrical portion and the periphery of the lower cylindrical portion. a joint portion, a lap joint corresponding to the neck portion, and a plurality of corresponding fills And a shoulder portion corresponding to the outer end portion of the upper cylindrical portion at a position corresponding to the outer end portion of the upper cylindrical portion; and the metal body corresponding to the polymer bushing The contact portion is pre-coated with at least one layer of the adhesive; the container body and the corresponding portion embedded in the polymer bushing correspond to the sandwich structure between the periphery of the disk portion and the shoulder portion. The pressure vessel of claim 15 wherein the container system has a bladder that is formed by a through-blowing type, and the outer periphery of the liner is coated with at least one structural reinforcing layer that is cured by the composite material. The pressure vessel of claim 15, wherein the metal system is provided with a relatively reduced inner diameter stop at a position between the upper cylindrical portion and the lower cylindrical portion. a first fitting groove is formed on the bottom surface of the stopping portion, and a second fitting groove is disposed at a portion of the center hole corresponding to the tail end of the lower cylindrical portion and the stopping portion; The polymer bushing integrally covers the section extending from the rear end of the lower cylindrical portion to the blocking portion, and is further formed with a first fitting portion corresponding to the first fitting groove, and a Corresponding to the second fitting portion of the second fitting groove. The pressure vessel of any one of claims 15 to 17, wherein the peripheral contour of the shoulder is polygonal. The pressure vessel according to any one of claims 15 to 17, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side. The pressure vessel according to any one of claims 15 to 17, wherein the thickness of the disk portion is gradually reduced from the inner side to the outer side; the peripheral contour of the shoulder portion is polygonal. The pressure vessel according to any one of claims 15 to 17, wherein the material of the polymer bushing may be one of polyethylene (PE) or high density poly ethylene (HDPE). By. The pressure vessel according to any one of claims 15 to 17, wherein the at least one layer of the adhesive agent may be one of a polyurethane (PU) or an epoxy resin (Epoxy).