CN112959702A

CN112959702A - Glass fiber reinforced plastic pressure container and processing method thereof

Info

Publication number: CN112959702A
Application number: CN202110223940.7A
Authority: CN
Inventors: 胡君敏; 程裕民
Original assignee: Shenzhen Angel Drinking Water Equipment Co Ltd
Current assignee: Shenzhen Angel Drinking Water Equipment Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-06-15
Anticipated expiration: 2041-03-01
Also published as: CN112959702B

Abstract

The invention belongs to the technical field of water purification, and particularly relates to a glass fiber reinforced plastic pressure container and a processing method thereof. The processing method comprises the following steps: providing a built-in joint; an integral forming process is adopted to manufacture the inner container with two opposite sealing ends, and the built-in joint is integrally welded at the sealing end of the inner container; covering a glass fiber layer on the outer wall surface of the inner container; cutting the sealing end provided with the built-in joint, and forming an opening at the position of the interface of the built-in joint; and reinforcing the cut part. When the glass fiber reinforced plastic pressure container is manufactured, the inner containers with two sealed ends are manufactured through an injection molding process, after the glass fiber is wound, the sealed ends provided with the built-in connectors are cut through a cutting process, openings of the pressure container are cut at the interface positions of the built-in connectors, when the glass fiber is wound, the interfaces of the built-in connectors do not need to be avoided, winding operation is simplified, winding efficiency is improved, and therefore production efficiency of the pressure container is improved.

Description

Glass fiber reinforced plastic pressure container and processing method thereof

Technical Field

The invention belongs to the technical field of water purification, and particularly relates to a glass fiber reinforced plastic pressure container and a processing method thereof.

Background

In recent years, with the deepening of health ideas, the quality requirements of people on daily domestic water, particularly drinking water, are continuously improved, so that water purification products are more and more favored by people. In general, in the process of water purification treatment, such as water softening treatment, a glass fiber reinforced plastic pressure vessel is required to contain water for purification treatment, and an opening at the end of the pressure vessel is used for water to flow in or out, so that certain requirements are imposed on the opening of the pressure vessel.

When the existing glass fiber reinforced plastic pressure container is manufactured, a built-in joint such as a threaded joint or a clamping groove joint for connecting a valve body is connected to the end part of an inner container, the built-in joint and the inner container are completely connected into a whole, and then glass fiber is wound on the outer wall surface of the inner container. Like this, pressure vessel's opening is formed through the interface of reserving built-in joint, for the opening of ensureing the container not sheltered from, when the outside winding glass fiber of inner bag, need consider the opening position of dodging built-in joint, and winding technology is complicated, and product production cycle is long, production efficiency is difficult to effectively promote.

Disclosure of Invention

The embodiment of the invention aims to provide a glass fiber reinforced plastic pressure container and a processing method thereof, and aims to solve the technical problem that the glass fiber reinforced plastic pressure container in the prior art needs to avoid an opening of a built-in joint when winding glass fibers, so that the winding efficiency is low.

In order to achieve the purpose, the invention adopts the technical scheme that: a processing method of a glass fiber reinforced plastic pressure container comprises the following steps:

s10, providing a built-in joint;

s20, manufacturing the inner container with two opposite sealing ends by adopting an integral forming process, and integrally welding the built-in joint at the sealing end of the inner container;

s30, winding glass fiber on the outer wall surface of the inner container, and covering a glass fiber layer on the outer wall surface of the inner container;

s40, cutting the sealing end provided with the built-in joint and forming an opening at the interface position of the built-in joint;

and S50, reinforcing the cut part.

In some embodiments, in step S30:

cutting and removing the part of the sealing end provided with the built-in joint, which exceeds the built-in joint, along the top surface of the built-in joint;

or cutting and removing the part of the sealing end provided with the built-in joint, which is positioned in the middle of the built-in joint, along the inner ring of the built-in joint.

In some embodiments, in step S40, a cutting process is performed using a glass reinforced plastic cutting apparatus.

In some embodiments, in step S30, the glass fiber is wound transversely on the outer wall surface of the inner container along the width direction of the inner container to form a transverse winding layer, and then the glass fiber is wound crosswise outside the transverse winding layer to form a crosswise winding layer;

or, firstly, vertically winding glass fiber on the outer wall surface of the inner container along the length direction of the inner container to form a vertical winding layer, and then, crossly winding the glass fiber outside the vertical winding layer to form a cross winding layer.

In some embodiments, in step S50, a thermosetting material layer is applied to the cut portion for reinforcement.

In some embodiments, a built-in fitting is provided and welded to a closed end of the inner container to form an open-ended glass fiber reinforced plastic pressure vessel.

In some embodiments, two built-in connectors are provided and respectively welded to the two sealed ends of the inner container, so as to form the glass fiber reinforced plastic pressure container with two open ends.

In some embodiments, the built-in fitting is a threaded fitting or a snap fitting.

In some embodiments, the built-in fitting is a stainless steel fitting or an injection molded fitting.

One or more technical schemes in the processing method of the glass fiber reinforced plastic pressure container provided by the invention have at least one of the following technical effects: when the glass fiber reinforced plastic pressure container is manufactured, the inner container with two sealed ends is manufactured by adopting an integral forming process, the built-in joint is integrally welded at the sealed end of the inner container, an opening is formed at the position of an interface of the built-in joint by cutting the sealed end, and then the cut part is reinforced, and the opening is the opening for manufacturing the formed pressure container. Therefore, after the glass fiber is wound, the sealing end of the inner container is cut through a cutting process, an opening is cut at the interface position of the built-in joint to form an opening of the pressure container, and the opening of the pressure container is not affected by the winding of the glass fiber. And when the glass fiber is wound on the inner container with the closed end opening, the interface of the built-in joint does not need to be avoided, the glass fiber winding operation is relatively simple, the winding efficiency is improved, the production process of the glass fiber reinforced plastic pressure container is simplified, and the production efficiency can be effectively improved.

The other technical scheme of the invention is as follows: the glass fiber reinforced plastic pressure container is manufactured by adopting the processing method of the glass fiber reinforced plastic pressure container.

The glass fiber reinforced plastic pressure container provided by the invention is prepared by adopting the processing method of the glass fiber reinforced plastic pressure container, the production speed is higher, and the production period is shorter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a flow chart of a method for processing a glass fiber reinforced plastic pressure vessel according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an inner container wrapped with a fiberglass layer, obtained when the fiberglass pressure vessel is manufactured by the method of processing the fiberglass pressure vessel shown in FIG. 1;

FIG. 3 is a cross-sectional view of another glass fiber layer wrapped liner obtained when the glass fiber reinforced plastic pressure vessel is manufactured by the method of manufacturing a glass fiber reinforced plastic pressure vessel shown in FIG. 1;

FIG. 4 is a cross-sectional view of another liner wrapped with a fiberglass layer, obtained when the fiberglass pressure vessel is manufactured by the method of processing a fiberglass pressure vessel shown in FIG. 1;

FIG. 5 is a cross-sectional view of another liner wrapped with a fiberglass layer, as would be obtained when the fiberglass pressure vessel is manufactured by the method of manufacturing the fiberglass pressure vessel shown in FIG. 1;

FIG. 6 is a partial cross-sectional view of a glass reinforced plastic pressure vessel obtained by cutting the structure shown in FIGS. 2 and 3 using the method of manufacturing a glass reinforced plastic pressure vessel shown in FIG. 1;

FIG. 7 is a partial cross-sectional view of a glass reinforced plastic pressure vessel obtained by cutting the structure shown in FIGS. 4 and 5 using the method of manufacturing a glass reinforced plastic pressure vessel shown in FIG. 1;

FIG. 8 is a view showing a state in which glass fiber is wound by the method for manufacturing a glass fiber reinforced plastic pressure vessel shown in FIG. 1;

fig. 9 is a second view showing a state where glass fiber is wound by the method for processing a glass fiber reinforced plastic pressure vessel shown in fig. 1.

Wherein, in the figures, the respective reference numerals:

10. a joint is arranged inside; 11. an internal thread; 12. a clamping groove; 20. an inner container; 21. sealing the end; 30. a glass fiber layer; 31. a transverse winding layer; 32. a cross-wound layer; 40. and (4) opening.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 1 to 9 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Reference in the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in fig. 1 to 9, an embodiment of the present invention provides a processing method for manufacturing a glass fiber reinforced plastic pressure vessel. Specifically, as shown in fig. 1, the processing method includes the steps of:

and S10, providing the built-in joint 10, wherein the interface of the built-in joint 10 is used for connecting with structures such as a valve body after the pressure container is manufactured and molded. Specifically, in the present embodiment, the built-in joint 10 is a threaded joint provided with an internal thread 11 at an interface, as shown in fig. 2 and 5, or a snap joint provided with a snap groove 12 at an interface, as shown in fig. 3 and 4. Of course, in some other embodiments, the built-in connector 10 may also be a connector with other structures, and it is only necessary to ensure that the built-in connector is welded in the liner 20 and then can be used for connecting with structures such as an external valve body.

S20, the inner container 20 having two opposite sealing ends 21 is manufactured by an integral molding process, and the built-in joint 10 is assembled on a core mold of a mold and the built-in joint 10 is integrally welded to the sealing end 21 of the inner container 20. In this embodiment, the inner container 20 may be manufactured by an integral molding process such as blow molding or rotational molding.

In some embodiments, when the glass fiber reinforced plastic pressure container needs to have openings 40 at both ends, two internal joints 10 are provided, and the two internal joints 10 are respectively disposed at both closed ends 21 of the liner 20, as shown in fig. 2 and 4.

In other embodiments, where the glass reinforced plastic pressure vessel is required to have an opening 40 at only one end, and the internal fitting 10 is provided only at the end where the opening 40 is required, an internal fitting 10 may be provided, as shown in fig. 3 and 5.

Further, the present embodiment exemplifies the manufacture of the inner container 20 by using the blow molding process. Dividing a blowing needle of a mold into a plurality of sections, and fixing built-in connectors 10 on the uppermost (lowermost) blowing needle of the core mold (when the built-in connectors 10 are arranged at both ends of the inner container 20, one built-in connector 10 is fixed on each of the uppermost and lowermost blowing needles); connecting the segmented blowing needles into a whole, fixedly arranging the blowing needles below a forming material extrusion opening of the inner container 20, extruding a manufacturing material of the inner container 20 to a position completely covered by the blowing needles by using a blow molding machine, closing the mold, forming the inner container 20 with two sealed ends in a cavity of the mold, and after closing the mold, blowing high-pressure gas from the blowing needles for maintaining the pressure to ensure that the inner container 20 is completely formed; and finally, opening the mold, screwing out the blowing needle, and opening the mold to take out the formed liner 20.

S30, wrapping the glass fiber around the outer wall surface of the inner container 20, so that the glass fiber completely covers the outer wall surface of the inner container 20, and the outer wall surface of the inner container 20 covers the glass fiber layer 30. Specifically, in the present embodiment, when winding the glass fiber, winding is performed using a synthetic resin such as an epoxy resin or the like as an adhesive.

S40, the sealing end 21 provided with the built-in joint 10 is cut, and an opening 40 is formed at the interface position of the built-in joint 10. Specifically, when the inner container 20 is provided with the built-in joints 10 at both ends, it is necessary to perform a cutting process on both sealed ends 21, respectively, to form the openings 40 at both ends, and when the inner container 20 is provided with the built-in joints 10 only at one end, it is sufficient to perform a cutting process only on the end provided with the built-in joints 10.

And S50, reinforcing the cut part, improving the connection stability of the built-in connector 10 and the inner container 20 at the cutting position, and avoiding the built-in connector 10 from being separated from the inner container 20 at the cutting position when external acting force is received.

The processing method of the glass fiber reinforced plastic pressure container provided by the embodiment of the invention is characterized in that when the glass fiber reinforced plastic pressure container is manufactured, the inner container 20 with two sealed ends is manufactured by adopting an integral forming process, the built-in joint 10 is integrally welded at the sealed end 21 of the inner container 20, the sealed end 21 is cut, an opening 40 is formed at the joint position of the built-in joint 10, and then the cut part is reinforced, wherein the opening 40 is the opening 40 of the manufactured and formed pressure container. Thus, after the glass fiber is wound, the sealing end 21 of the liner 20 is cut by a cutting process, the opening 40 is cut at the interface position of the built-in joint 10 to form the opening 40 of the pressure container, and the arrangement of the opening 40 of the pressure container is not affected by the winding of the glass fiber. And when the glass fiber is wound on the inner container 20 with the closed end opening, the interface of the built-in joint 10 does not need to be avoided, the glass fiber winding operation is relatively simple, and the winding efficiency is improved.

It should be noted that, in some embodiments of the present invention, the inner container 20 formed by the mold may have different shapes at the closed end 21 due to different specific shapes of the mold, for example, the inner container 20 formed by the mold may have a convex curved surface (e.g., an arc-shaped cross section) at the closed end 21, as shown in fig. 2 and 3, or may have a flat or concave curved surface at the closed end 21, as shown in fig. 4 and 5. In this way, the specific portions to be cut are different depending on the shape of the sealing end 21 of the liner 20. The method is specifically divided into the following two modes:

in some embodiments, when the sealed end 21 of the inner container 20 is a curved surface protruding outward, such as in the form of an arc in cross section as shown in fig. 2 and 3, in step S30, when the sealed end 21 of the inner container 20 is cut, a portion of the sealed end 21 provided with the built-in joint 10, which portion exceeds the built-in joint 10, is cut away along the top surface of the built-in joint 10, i.e., the portion exceeds the position shown by the dotted line L1 in fig. 2 and 3, so as to manufacture the glass fiber reinforced plastic pressure container having the opening 40 as shown in fig. 6.

In other embodiments, when the sealed end 21 of the inner container 20 is a plane or a concave curved surface, as shown in the form of a plane shape in fig. 4 and 5, in step S30, when the sealed end 21 of the inner container 20 is cut, a portion of the sealed end 21 provided with the built-in joint 10, which is located in the middle of the built-in joint 10, is cut and removed along an inner circumference of the built-in joint 10, that is, a portion located in the middle of the built-in joint 10 is cut and removed along a circle along a dotted line L2 in fig. 4 and 5, so as to manufacture the glass fiber reinforced plastic pressure container having the opening 40 shown in fig. 7.

In another embodiment of the present invention, in step S40, a glass fiber reinforced plastic cutting device, such as a numerical control cutting machine, is used to perform a cutting process on the sealing end 21 of the liner 20 wound with the glass fiber and provided with the built-in joint 10.

In another embodiment of the present invention, in step S30, when wrapping the glass fiber around the outer wall surface of the inner container 20, the glass fiber is first wrapped around the outer wall surface of the inner container 20 in the width direction of the inner container 20 to form the transverse wrapping layer 31, as shown in fig. 8, and then the glass fiber is wrapped around the transverse wrapping layer 31 in a crossing manner to form the crossing wrapping layer 32, as shown in fig. 9. Alternatively, the glass fiber may be vertically wound on the outer wall surface of the inner container 20 along the length direction of the inner container 20 to form a vertical winding layer, and then the glass fiber may be crossly wound outside the vertical winding layer to form the cross winding layer 32. Therefore, the liner 20 has stronger pressure resistance after being wound by the glass fiber, and the pressure resistance of the glass fiber reinforced plastic pressure container is improved.

In another embodiment of the present invention, in step S50, the thermosetting material layer is coated at the cut portion (as indicated by the solid line in fig. 6 and 7) for reinforcement, that is, after the cutting process, the thermosetting material layer is coated at the cut portion to form the thermosetting material layer, and the cut portion is reinforced. In some embodiments, the reinforcement may be applied with a synthetic resin material such as epoxy resin.

In another embodiment of the present invention, a built-in joint 10 is provided and welded to a sealed end 21 of the inner container 20, and the sealed end 21 provided with the built-in joint 10 is cut to form a glass fiber reinforced plastic pressure container with an opening 40 at one end.

In the embodiment of the present invention, two built-in joints 10 are provided and welded to the two sealed ends 21 of the inner container 20, and the two sealed ends 21 provided with the built-in joints 10 are cut, thereby forming a glass fiber reinforced plastic pressure container having openings 40 at both ends.

In some embodiments of the present invention, the internal joint 10 is a threaded joint having internal threads 11 at the interface, as shown in fig. 2 and 5, the internal joint 10 is provided in the inner container 20, and after cutting, a glass fiber reinforced plastic pressure vessel having an opening 40 as shown in fig. 6 is obtained, and the opening 40 is provided with internal threads 11 for screwing with external threads of an external valve body or the like.

In other embodiments of the present invention, the built-in connector 10 is a clamping connector having a clamping groove 12 at an interface, as shown in fig. 3 and 4, the clamping connector is arranged in the inner container 20 as the built-in connector 10, and after cutting, the glass fiber reinforced plastic pressure container having an opening 40 as shown in fig. 7 can be manufactured, and the opening 40 is provided with the clamping groove 12 for clamping connection with an external valve body or other structures.

In another embodiment of the present invention, the built-in joint 10 is a stainless steel joint or an injection molding joint, and is selected according to actual design requirements.

The invention further provides a glass fiber reinforced plastic pressure container which is manufactured by the processing method of the glass fiber reinforced plastic pressure container.

The glass fiber reinforced plastic pressure container provided by the embodiment of the invention is prepared by adopting the processing method of the glass fiber reinforced plastic pressure container, the production speed is higher, and the production cycle is shorter.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A processing method of a glass fiber reinforced plastic pressure vessel is characterized by comprising the following steps:

s10, providing a built-in joint;

s30, winding glass fibers on the outer wall surface of the inner container, and covering a glass fiber layer on the outer wall surface of the inner container;

s40, cutting the sealing end provided with the built-in joint, and forming an opening at the interface position of the built-in joint;

and S50, reinforcing the cut part.

2. The method for processing a glass fiber reinforced plastic pressure vessel according to claim 1, wherein in step S30:

cutting and removing a part of the sealing end provided with the built-in joint, which exceeds the built-in joint, along the top surface of the built-in joint;

or cutting and removing the part, which is arranged at the middle part of the built-in joint, of the sealing end of the built-in joint along the inner ring of the built-in joint.

3. The method for processing a glass fiber reinforced plastic pressure vessel as claimed in claim 1, wherein in step S40, a glass fiber reinforced plastic cutting device is used for cutting.

4. The method of claim 1, wherein in step S30, the glass fiber is wound transversely around the outer wall surface of the inner container in the width direction of the inner container to form transverse wound layers, and the glass fiber is wound transversely around the transverse wound layers to form cross wound layers;

or, firstly, vertically winding glass fibers on the outer wall surface of the inner container along the length direction of the inner container to form a vertical winding layer, and then, crosswise winding the glass fibers outside the vertical winding layer to form a crossed winding layer.

5. The method of claim 1, wherein in step S50, the cut portion is reinforced by applying a thermosetting material layer.

6. The method as claimed in any one of claims 1 to 5, wherein the internal joint is provided and welded to a sealed end of the inner container to form an open-ended glass fiber reinforced plastic pressure container.

7. The method of manufacturing a glass fiber reinforced plastic pressure vessel according to any one of claims 1 to 5, wherein two of the built-in joints are provided and welded to both sealed ends of the inner container, respectively, to form a glass fiber reinforced plastic pressure vessel having both ends opened.

8. The method for processing the glass fiber reinforced plastic pressure vessel according to any one of claims 1 to 5, wherein the built-in joint is a threaded joint or a snap joint.

9. The method for processing a glass fiber reinforced plastic pressure vessel according to any one of claims 1 to 5, wherein the built-in joint is a stainless steel joint or an injection-molded joint.

10. The glass fiber reinforced plastic pressure container is characterized by being prepared by the processing method of the glass fiber reinforced plastic pressure container as claimed in any one of claims 1 to 9.