TW201907107A - Improvement of the structure of the piston assembly of the water hydrant - Google Patents

Abstract

The present invention provides an improved piston assembly structure of a water hydrant, which is mainly installed with a water hydrant main body provided with a valve chamber mounted therein a water control valve. The water control valve consists of a valve body; rubber gaskets disposed at two sides of the valve body; a piston cylinder and a piston shaft, which are disposed inside the valve body; a valve shaft for operating the piston shaft; a cap; a top cover of the valve body; and a knob locked to the valve shaft for operating the same, wherein the outer diameter of the piston cylinder is a hetero-type design with unequal diameter, and the piston cylinder is provided with a water inlet hole and a water outlet hole at different portions to work with the regulation of the piston shaft therein so as to change the relative relationship, thereby achieving the percentage adjustment function of water supply, water stop and water mixture. The improved structure is characterized in that: the piston cylinder is formed by a stainless steel base pipe and a plastic cylinder wrapping the exterior thereof, so as to greatly simplify the process, reduce the material cost, and provide a better industrial use value without affecting the strength and function.

Description

   Improved structure of piston assembly of water supply plug   

The invention relates to a structure improvement of a piston assembly of a water supply plug, which is mainly for improving the design of a piston barrel of a piston component inside a water control valve of the water supply plug. Through the composite structure of the piston barrel, it does not affect its overall function. In principle, it can effectively simplify its processing process, and can greatly reduce its overall cost, and give better industrial use value.

According to the general water equipment, water supply plugs are often used for water supply and water stop operations. Such water supply plugs are usually equipped with cold and hot water pipes, respectively, in conjunction with the regulating operation of the water control valve inside the water plug to change the cold and hot water The water inlet ratio is used to control the water temperature of the outlet water, so that it can adjust the water temperature according to different usage needs or water habits.

The structure of the water control valve of the front water supply plug is mainly provided with a water supply body that can be connected to the water supply pipe. The water supply plug body is provided with a tank chamber for the water supply valve filling group. The water control valve It is provided with a valve body, and a piston assembly composed of a piston groove and a piston valve body set is provided in the valve body, and water inlet holes are provided on both sides of the valve body. The watertight relationship between the water inlet body's water inlet pipe and the piston resistance member, and the piston barrel of the piston assembly is of a different shape with different diameters, and has inlet and outlet holes at predetermined positions, and is arranged on the top of the valve body. The valve rod operates the piston rod to change the relative relationship with the piston barrel to achieve its cold and hot water inlet ratio to achieve the water temperature adjustment function.

However, the piston barrel of the aforementioned water supply valve is usually manufactured by turning stainless steel bars. In addition to the different outside diameters of different diameters, the inner diameter of the piston rod sleeve needs to be processed. Holes, while processing the inlet and outlet holes at predetermined external locations, the overall processing operation is quite complicated and time-consuming. In addition, the turning process consumes a lot of material, resulting in an increase in material cost, which affects its overall production. The production cost is not conducive to the economic benefits of industrial utilization. In addition, it is also difficult to obtain an excellent sealing relationship between the metal surface of the piston assembly and the rubber pad. It is easy to have the hidden worry of poor water retention and leakage. It is necessary to try again to address the improvers.

In view of the fact that the piston assembly of the conventional water supply plug is manufactured by turning stainless steel bars into rows, the overall production cost is high, which affects the value of industrial use. Based on this, the inventors specially researched and improved , And further developed the improved piston barrel structure of the present invention.

In order to solve the cost problems caused by the conventional turning and forming of stainless steel bars with integrated piston cylinders, the inventors specially made stainless steel pipes to process the inlet and outlet holes without affecting the function of the piston cylinder, and then put them into the mold. The plastic tube is injected and packaged to form a composite material piston cylinder structure, which not only simplifies its processing process, but also maintains its structural strength and the reduction of stainless steel materials.

The structure of the piston assembly of the present invention is improved. Through the innovative design of the piston cylinder adopting a stainless steel tube to eject the plastic cylinder body, it can not only effectively simplify its processing process, but also reduce its processing principle without affecting the overall assembly relationship and function. It saves material cost, and can effectively improve the water-tight relationship between the piston assembly and the rubber pad, giving it excellent economic benefits and practical value in industrial use, and completely solving the lack of the conventional structure that is not perfect.

(10) ‧‧‧Water supply plug body

(11) (12) ‧‧‧Inlet pipe end

(111) (121) ‧‧‧Water control latch

(13) ‧‧‧Outlet pipe end

(20) ‧‧‧Water Control Valve

(21) ‧‧‧Valve body

(22) ‧‧‧Rubber pad

(23) ‧‧‧Stem

(24) ‧‧‧Cap

(25) ‧‧‧Valve top cover

(26) ‧‧‧Knob

(30) ‧‧‧Piston assembly

(31) ‧‧‧Piston rod

(32) ‧‧‧Piston barrel

(33) ‧‧‧Stainless steel base pipe

(34) ‧‧‧Plastic cylinder

(341) ‧‧‧Circular groove

(35) (36) ‧‧‧Inlet and outlet holes

(37) (38) ‧‧‧hole slot

(39) ‧‧‧O-ring

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a water control valve body structure according to a preferred embodiment of the present invention.

FIG. 3 is a structural diagram of a piston barrel according to a preferred embodiment of the present invention.

FIG. 4 is an exploded view of a piston barrel structure according to a preferred embodiment of the present invention.

FIG. 5 is a structural relationship diagram of a piston barrel according to a preferred embodiment of the present invention.

Regarding the structural composition, technical means and effects of the present invention, please refer to the drawings and give examples for further details. Please refer to Figures 1 to 5 to illustrate the preferred implementation mode of the present invention, as shown in the figure. As shown, the water supply plug of the present invention is mainly provided with a water supply plug body (10), and the water supply plug body (10) is provided with water inlet pipe ends (11) (12) on both sides to connect a water supply pipe (not shown), On the front side, a water outlet pipe end (13) is extended to connect the water pipe (not shown), and water inlet latches (111) (121) are provided at predetermined positions of the two water inlet pipe ends (11) (12). It is used to adjust its water inlet volume. In addition, a valve chamber (not shown) for assembling a water control valve (20) is extended upward from the center of the water plug body (10). The water control valve (20) is composed of a valve body. (21) Rubber pads (22) on both sides of the valve body (21), a piston assembly (30) filled inside the valve body (21), a valve stem (23) for operating the piston assembly (30), and a cap The cover (24), the valve body top cover (25), and the knob (26) for locking the operation valve stem (23), wherein the piston assembly (30) is composed of a piston rod (31) and a piston barrel (32). The outer diameter of the piston cylinder (32) is unequal in diameter. The design is made of a stainless steel base pipe (33) and an externally wrapped plastic cylinder (34). The stainless steel base pipe (33) is directly cut from a stainless steel pipe and is provided at a predetermined position. Water inlet and outlet holes (35) and (36), and then put the stainless steel base pipe (33) into a prefabricated mold (not shown), and then use plastic material to shoot and wrap the stainless steel base pipe (33). The mold cavity planning is to form a predetermined-shaped unequal-diameter shaped plastic cylinder (34), and mold the plastic cylinder (34) with the water inlet and outlet holes (35) (36) of the stainless steel base pipe (33). Corresponding holes and grooves (37) (38), according to which the stainless steel base pipe (33) is integrated inside the plastic cylinder (34) to form a composite piston cylinder (32), so that Under the principle that the function is not affected, it can still maintain its existing structural strength, and at the same time achieve an excellent sealing effect between the rubber pads (22) on both sides of the valve body (21) and the piston cylinder (32). The plastic cylinder body (34) of (32) is formed with a plurality of ring grooves (341) on the outer peripheral surface, so that an O-ring (39) can be embedded, so that when the piston cylinder (32) is set inside the valve body (21) To get a watertight relationship, The inlet and outlet holes of the valve body must be separated from the inlet and outlet holes of the valve body (21) to form an independent water flow channel. It can cooperate with the valve rod (23) to regulate the internal piston rod (31) to change the relative relationship with the piston barrel (32). In order to achieve the function of adjusting the water supply, water stop and water mixing ratio, that is, according to the above description, it is known that the present invention innovatively uses the piston barrel of the piston assembly without changing the principle of the overall components and functional structure of the water supply plug. The stainless steel base pipe is shot out of a plastic shell to form a composite material structure design. Without affecting the overall assembly relationship and function, it can simplify the processing of the piston cylinder and reduce the use of stainless steel materials. However, it can maintain its structural strength. At the same time, because the outside of the piston barrel is made of plastic, it can achieve excellent sealing effect with the rubber pads on the two sides of the valve body. In this way, it can give it a better industrial use. Economic benefits and practical values, to solve the problems and shortcomings of the conventional structure using stainless steel bars integrated turning processing to produce piston barrels and the lack thereof; in summary, the present invention is The structure of the piston assembly is improved. Without changing the existing structural composition and function of the water supply plug, the piston barrel of the piston assembly is made of a composite material structure composed of a stainless steel base tube and a plastic barrel, which not only simplifies the piston barrel. Processing process and reduce the use of stainless steel materials, and can maintain its existing structural strength and improve watertightness, give better industrial applicability and practical value, and completely solve the problems and shortcomings of the conventional structure. It is an outstanding and outstanding innovative design, and filed a patent application according to law.

Claims (1)

    An improved structure of a piston assembly of a water supply plug is provided. The water supply plug is mainly provided with a water supply plug body. Water supply pipe ends are provided on both sides of the water supply plug body to connect water supply pipes, and a water outlet pipe end is extended on the front side. A water control pipe is arranged at the predetermined positions on the ends of the two water inlet pipes, and a water control latch for adjusting the water inlet is provided. In addition, a valve chamber for assembling a water control valve is extended in the center of the main body of the water supply plug. The valve system consists of a valve body, rubber pads on both sides of the valve body, a piston assembly filled inside the valve body, a valve stem for operating the piston assembly, a cap, a valve body top cover, and a knob for locking the operation of the valve stem. The piston assembly is composed of a piston rod and a piston cylinder. The outer diameter of the piston cylinder is a non-uniform design with irregular diameters, and water inlet and outlet holes are made at predetermined locations to match. The internal control of the piston rod changes the relative relationship to achieve the function of adjusting the supply, water stop, and water mixing ratio. The improvement is that the aforementioned piston cylinder is made of a stainless steel base pipe and an externally wrapped plastic cylinder. , The stainless steel base pipe is stainless The tube is directly cut, and inlet and outlet holes are made at predetermined locations. The plastic cylinder is formed by injection molding the stainless steel base tube into a prefabricated mold according to the mold cavity planning. The plastic cylinder is integrally enclosed on the outside of the stainless steel base pipe, and corresponding holes and grooves are formed in the plastic cylinder with respect to the water inlet and outlet holes of the stainless steel base pipe, so as to form a composite material piston cylinder.