Liquid pressurizing device

Abstract

A liquid pressurizing device comprises an inner lining cover, a rubber diaphragm and an outer cover, an inner extending portion and an inner protruding ring are sequentially formed on the annular periphery of the inner lining cover, the rubber diaphragm is arranged on the front side of the inner lining cover, the annular periphery of the rubber diaphragm is arranged on the inner extending portion in an overlapped mode, the outer cover is arranged on the front side of the inner lining cover, and the inner protruding ring is arranged on the outer side of the inner lining cover. An outer extension part and an outer convex ring are sequentially formed on the ring periphery of an opening end of the outer cover, the outer extension part is correspondingly overlapped on the ring periphery of the rubber diaphragm, and the outer convex ring and the inner convex ring are overlapped and are in sealed connection. The lining cover and the outer cover can be made of engineering plastic materials, and the rubber diaphragm can be fixedly arranged in the lining cover and the outer cover, so that the liquid pressurizing device which is light in weight, resistant to corrosion and low in manufacturing cost is provided for a user to use.

Description

Technical Field

[0001] The present invention relates to a liquid pressurizing device, in particular to a liquid pressurizing device installed on liquid conveying equipment for applying pressure to the liquid. Background Art

[0002] Pumps can be used to increase the pressure of a liquid, giving the pressurized liquid a greater propulsion force, thereby speeding up the flow of the fluid, or transporting the liquid from a low place to a high place for use.

[0003] A liquid pressurizing component is provided at the open end of a housing of the pump, and the liquid pressurizing component generally comprises an outer cover and a rubber diaphragm. The outer cover covers the open end of the housing and is fixed to the housing. The rubber diaphragm is arranged on the inner side of the outer cover at intervals from the outer cover. The outer periphery of the rubber diaphragm is fixed to the inner wall surface of the outer cover, so as to form a pressurizing chamber between the outer cover and the rubber diaphragm. The pressurizing chamber is filled with gas with appropriate pressure. When the pump is operating, the rubber diaphragm can keep the liquid inside the pump and the gas in the pressurizing chamber in a state of pressure balance.

[0004] In the prior art, the outer cover is made of stainless steel, galvanized iron or other metal materials, so the outer periphery of the outer cover can be bent by stamping to clamp the outer periphery of the rubber diaphragm, and then the outer cover is locked to the pump housing by multiple fixing parts.

[0005] With the development of the manufacturing process and processing technology of plastic materials, the performance of engineering plastics has been continuously improved. Moreover, since engineering plastics have the advantages of light weight, corrosion resistance, low manufacturing cost, etc., many mechanical parts have gradually been made of engineering plastics instead of metal materials. However, when the outer cover of the above-mentioned liquid pressurizing component is made of engineering plastics, due to the different ductility of engineering plastics and metals, it is impossible to combine and fix the rubber diaphragm by stamping like the outer cover of metal materials. Therefore, as mentioned above, in order to change to engineering plastic materials, the structure of the liquid pressurizing component of the prior art still needs to be further improved. Summary of the invention

[0006] In view of the problems existing in the prior art, an object of the present invention is to provide a liquid pressurizing device that can be manufactured by manufacturers using engineering plastic materials.

[0007] In order to achieve the above-mentioned purpose of the invention, the technical means adopted by the present invention is to design a liquid pressurizing device, which includes:

[0008] An inner liner cover having at least one guide hole formed therethrough, an inner extension portion and an inner convex ring being sequentially formed at the circumferential edge of the inner liner cover, the inner extension portion extending obliquely backward and / or obliquely outward from the circumferential edge of the inner liner cover, and the inner convex ring further protruding outwardly from the outer circumferential edge of the inner extension portion along the radial direction of the inner liner cover;

[0009] a rubber diaphragm, which is arranged on a front side of the inner lining cover, and the peripheral edge of the rubber diaphragm is overlapped with the inner extension portion of the inner lining cover;

[0010] An outer cover is arranged on the front side of the inner lining cover, the rubber diaphragm is located between the outer cover and the inner lining cover, the opposite ends of the outer cover are respectively formed as a bottom and an open end, the peripheral edge of the outer cover at the open end forms an outer extension part and an outer convex ring in sequence, the outer extension part extends obliquely backward and / or outward from the peripheral edge of the outer cover and surrounds the open end of the outer cover, the outer extension part is correspondingly overlapped on the peripheral edge of the rubber diaphragm, the outer convex ring further protrudes outwardly from the outer peripheral edge of the outer extension part along the radial direction of the outer cover and surrounds the open end of the outer cover, the outer convex ring is overlapped with the inner convex ring of the inner lining cover, and a sealing connection is formed between the outer convex ring and the inner convex ring.

[0011] The liquid pressurizing device can further include a pressure ring, which is arranged on the front side of the inner lining cover and overlaps the inner extension portion of the inner lining cover and the circumferential edge of the rubber diaphragm, and the pressure ring and the circumferential edge of the rubber diaphragm are clamped between the outer extension portion of the outer cover and the inner extension portion of the inner lining cover.

[0012] In the liquid pressurizing device, the outer cover and the inner lining cover can be made of engineering plastics.

[0013] In the liquid pressurizing device, the pressure ring is made of engineering plastic.

[0014] In the liquid pressurizing device, the inner convex ring of the inner lining cover can be provided with a plurality of inner perforations spaced apart from each other, and the outer convex ring of the outer cover can be provided with a plurality of outer perforations spaced apart from each other, and the outer perforations are respectively connected to the corresponding inner perforations.

[0015] The advantage of the liquid pressurizing device of the present invention is that its inner lining cover, pressure ring and outer cover can be made of engineering plastic material, and the rubber diaphragm can be fixed therein, thereby providing a light-weight, corrosion-resistant and low-manufacturing-cost liquid pressurizing device for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0017] Figure 1 It is a three-dimensional exploded view of the present invention in use.

[0018] Figure 2 It is a three-dimensional appearance diagram of the present invention.

[0019] Figure 3 It is a three-dimensional exploded view of the present invention.

[0020] Figure 4 It is another three-dimensional exploded view of the present invention.

[0021] Figure 5 It is a partial cross-sectional side view of the present invention in use. DETAILED DESCRIPTION

[0022] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should all be considered to belong to the scope of the present invention.

[0023] The following is a detailed description of the technical means used by the present invention to achieve the intended purpose of the invention with reference to the drawings and preferred embodiments of the present invention.

[0024] See also Figures 1 to 5 As shown, the liquid pressurizing device of the present invention is used to be installed on a liquid delivery device, and the liquid delivery device can be a pump 60, but it is not limited to this, and can also be a liquid delivery pipe. Figure 3 As shown, the liquid pressurizing device includes an inner liner cover 10 , a rubber diaphragm 20 , a pressure ring 30 and an outer cover 40 .

[0025] At least one guide hole 11 is formed through the inner lining cover 10, and the at least one guide hole 11 can be used for liquid circulation, so that the two opposite sides of the inner lining cover 10 are respectively a rear side and a front side. The rear side of the inner lining cover 10 refers to the side facing the aforementioned liquid delivery device. An inner extension portion 12 and an inner convex ring 13 are formed in sequence at the circumferential edge of the inner lining cover 10. The inner extension portion 12 extends obliquely backward and outward from the circumferential edge of the inner lining cover 10, and the inner convex ring 13 further protrudes outward from the outer circumference of the inner extension portion 12 along the radial direction of the inner lining cover 10.

[0026] The rubber diaphragm 20 is disposed on the front side of the inner lining cover 10 , and a peripheral edge 21 of the rubber diaphragm 20 is overlapped with the inner extension portion 12 of the inner lining cover 10 .

[0027] The pressure ring 30 is also arranged on the front side of the inner lining cover 10 and is overlapped on the inner extension portion 12 of the inner lining cover 10 and the circumferential edge 21 of the rubber diaphragm 20 , clamping the circumferential edge 21 of the rubber diaphragm 20 between the pressure ring 30 and the inner extension portion 12 of the inner lining cover 10 .

[0028] The outer cover 40 is arranged on the front side of the inner liner cover 10, and the rubber diaphragm 20 and the pressure ring 30 are located between the outer cover 40 and the inner liner cover 10. The outer cover 40 is formed into a concave container shape, and its opposite ends are respectively formed into a bottom and an open end. The peripheral edge of the outer cover 40 at the open end forms an outer extension 41 and an outer convex ring 42 in sequence. The outer extension 41 extends obliquely backward and outward from the peripheral edge of the outer cover 40, and surrounds the open end of the outer cover 40. The outer extension 41 is correspondingly overlapped with the pressure ring 30 and the peripheral edge 21 of the rubber diaphragm 20, so as to further clamp the pressure ring 30 and the peripheral edge 21 of the rubber diaphragm 20 between the outer extension 41 and the inner extension 12 of the inner liner cover 10. The outer convex ring 42 further protrudes outward radially from the outer peripheral edge of the outer extension portion 41 along the outer cover 40 and surrounds the open end of the outer cover 40. The outer convex ring 42 overlaps with the inner convex ring 13 of the inner lining cover 10, and a sealed connection is formed between the outer convex ring 42 and the inner convex ring 13.

[0029] Thereby, a pressurized chamber 22 is formed between the outer cover 40 and the rubber diaphragm 20, and the pressurized chamber 22 is filled with gas with appropriate pressure. A gas nozzle 50 can be set at the bottom of the outer cover 40, and the user can fill or release gas from the gas nozzle 50 to adjust the gas pressure in the pressurized chamber 22.

[0030] In a specific embodiment of the present invention, the outer cover 40, the inner lining cover 10 and the pressure ring 30 are all made of engineering plastics, so they have the advantages of light weight, corrosion resistance, low manufacturing cost, etc. Furthermore, heating welding, high frequency, ultrasound, etc. can be used to heat and melt the outer convex ring 42 and the inner convex ring 13, so that the outer convex ring 42 and the inner convex ring 13 after cooling and solidification can be joined to each other in a sealed manner, and the pressure ring 30 can isolate the annular edge 21 of the rubber diaphragm 20 from the aforementioned heated and melted area to avoid damage to the rubber diaphragm 20 caused by high temperature.

[0031] In a specific embodiment of the present invention, the inner convex ring 13 of the inner lining cover 10 is provided with a plurality of inner perforations 14 arranged at intervals, and the outer convex ring 42 of the outer cover 40 is provided with a plurality of outer perforations 43 arranged at intervals, and the outer perforations 43 are respectively connected to the corresponding inner perforations 14. In addition, the liquid delivery device is a pump 60, and a plurality of corresponding mounting holes 62 are also provided on the housing 61 of the pump 60. The user can use a screw 63 to penetrate the corresponding outer perforations 43, the inner perforations 14 and the mounting holes 62 and then lock them to the housing 61 of the pump 60, thereby assembling the liquid pressurizing device of the present invention on the pump 60.

[0032] By means of the design as described above, the inner lining cover 10, the pressure ring 30 and the outer cover 40 of the liquid pressurizing device of the present invention can be made of engineering plastic material, and the rubber diaphragm 20 can be fixed therein, thereby providing a light-weight, rust-resistant and low-manufacturing-cost liquid pressurizing device for users to use.

[0033] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A liquid pressurizing device, which is used to be installed on a liquid delivery device, the liquid pressurizing device comprises an inner liner cover, a rubber diaphragm and an outer cover, characterized in that: At least one guide hole is formed through the inner lining cover, and an inner extension portion and an inner convex ring are sequentially formed at the circumferential edge of the inner lining cover, the inner extension portion extends obliquely backward and / or obliquely outward from the circumferential edge of the inner lining cover, and the inner convex ring protrudes outward along the radial direction of the inner lining cover from the outer circumferential edge of the inner extension portion; The rubber diaphragm is arranged on a front side of the inner lining cover, and the peripheral edge of the rubber diaphragm is overlapped on the inner extension part of the inner lining cover; The outer cover is arranged on the front side of the inner lining cover, the rubber diaphragm is located between the outer cover and the inner lining cover, the opposite ends of the outer cover are respectively formed as a bottom and an open end, the peripheral edge of the outer cover at the open end forms an outer extension part and an outer convex ring in sequence, the outer extension part extends obliquely backward and / or outward from the peripheral edge of the outer cover and surrounds the open end of the outer cover, the outer extension part is correspondingly overlapped on the peripheral edge of the rubber diaphragm, the outer convex ring protrudes outwardly from the outer peripheral edge of the outer extension part along the radial direction of the outer cover and surrounds the open end of the outer cover, the outer convex ring is overlapped with the inner convex ring of the inner lining cover, and a sealing connection is formed between the outer convex ring and the inner convex ring.

2. The liquid pressurizing device according to claim 1, characterized in that: The liquid pressurizing device includes a pressure ring, which is arranged on the front side of the inner lining cover and overlaps the inner extension portion of the inner lining cover and the circumferential edge of the rubber diaphragm. The pressure ring and the circumferential edge of the rubber diaphragm are clamped between the outer extension portion of the outer cover and the inner extension portion of the inner lining cover.

3. The liquid pressurizing device according to claim 2, characterized in that: The outer cover and the inner lining cover are made of engineering plastics.

4. The liquid pressurizing device according to claim 2 or 3, characterized in that: The material of the pressure ring is engineering plastic.

5. The liquid pressurizing device according to claim 1 or 2, characterized in that: The inner convex ring of the inner lining cover is provided with a plurality of inner through holes arranged at intervals, and the outer convex ring of the outer cover is provided with a plurality of outer through holes arranged at intervals, and the outer through holes are respectively communicated with the inner through holes correspondingly.

6. The liquid pressurizing device according to claim 1, characterized in that: The outer cover and the inner lining cover are made of engineering plastics.

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