KR20010002235A - Sealing construction of cartridge for a tap valve - Google Patents

Abstract

PURPOSE: A sealing structure of a valve cartridge of a pipeline water tap is provided to prevent water leakage even though a lower disk plate is lifted off due to water hammering and damage on a rubber packing, to improve the quality of a valve cartridge and to reduce a producing cost. CONSTITUTION: A packing insertion groove(27) is formed around the upper ends of cool and hot water supply hole(7) and discharge hole(9) formed in a base(11) deeper rather than a first rubber packing(21). A contact groove(29) of a specific height(h) is formed on the first rubber packing inserted to the packing insertion groove. A packing protruded portion(31) for packing between the base and a lower disk plate(17) is formed on the disk lower plate. Around the lower ends of the cool and hot water supply and discharge holes, a packing insertion groove(33) is formed in the same height as a second rubber packing to be inserted with the second rubber packing. On the edge of the base, an annular protruding sill(35) is formed. A disk lower plate settling groove(39) is formed in the center of the base to settle the disk lower plate. Even if the disk lower plate is lifted off temporarily due to water hammering, the packing protruded portion moves up and down in the contact groove.

Description

Sealing construction of cartridge for a tap valve

The present invention relates to a sealing structure of a water valve cartridge, and more particularly, to a sealing structure of a water valve cartridge that can prevent deformation damage of the rubber packing incorporated in the water valve cartridge.

In general, the water valve 51 is a water valve body 53 directly connected to the supply pipe and the outlet of the cold hot water, as shown in Figure 2, is installed inside the water valve body 53 of the cold hot water Water valve cartridge 55 to control the opening and closing, the presser 57 is coupled to the outer circumferential surface of the water valve cartridge 55 and the handle 59 is coupled to the upper end of the presser 57 to control the opening and closing of cold and hot water have.

And, as shown in Figure 3, the water valve cartridge 55, the control unit 63 for controlling the hot and cold water opening and closing while being adjusted by the handle 59 in the cartridge housing 61, and the Bush 65 for guiding the adjuster 63, the seat cap 67 is coupled to the bottom of the bush 65 and sliding back and forth by the adjuster 63, the seat cap 67 is coupled below According to the operation angle of the control unit 63, the disk top plate 69 made of a ceramic material for adjusting the amount of cold and hot water while rotating back and forth, left and right, the supply passage (71a, 71b) and the discharge passage (71c) and the coupling groove of the hot and cold water ( 71d) and a disk lower plate 71 made of ceramic material coupled to the bottom of the disk upper plate 69, cold and hot water supply holes 73a and 73b, discharge holes 73c and a coupling piece 73d. (71) consists of a base (73) coupled below to form the bottom end of the cartridge housing (61) There.

In such a general water valve cartridge 55, cold water and hot water are supplied through a cold hot water supply pipe, passing through the supply holes 73a and 73b of the base and the supply passages 71a and 71b of the disk lower plate 71. Through the open space of the disc flows into the discharge passage 71c of the lower plate 71 and passes through the discharge hole (73c) of the base 73 is discharged to the outlet of the valve body.

In addition, as shown in FIG. 4, the cartridge includes a first rubber packing 77 sealing between the disc lower plate 71 and the base 73 and between the base 73 and the water valve body 53. Sealing second rubber packing 79 is provided, there are generally three ways to install the first and second rubber packing (77,79), the first is as shown in Figure 4a) The first rubber packing 77 is inserted into an annular packing insertion groove 81 formed around the upper end of the cold / hot water supply hole of the base 73 to seal between the base 73 and the disc lower plate 71. The second rubber packing 79 is inserted into the annular packing insertion groove 81 formed around the lower ends of the cold hot water supply holes 73a and 73b of the base 73 so that the base 73 and the water valve body. It is a structure which seals between 53.

In such a structure, when the disk upper plate 69 is moved with respect to the base 73 and the disk lower plate 71 to abruptly block the flow of water, water hammering occurs, and the disk is caused by the instantaneous high pressure. The phenomenon that the lower plate 71 temporarily floats up as shown in (B) indicated by a dotted line at the position (A) occurs. At the same time, the first rubber packing (77) inserted into the rubber packing groove (81) is deformed and displaced as shown in (c) with a gap (85) extending between the base (73) when the disc lower plate (71) rises up. As a result, leakage occurs, and the plastic sheet is deformed by being pressed by the disc lower plate 71 while being released, thereby causing leakage and causing a failure of the water valve cartridge.

Secondly, as shown in b) of FIG. 4, the second rubber packing 79 is installed in the same manner as the sealing structure of a) of FIG. 4, and the first rubber packing 77 is the disc lower plate 71. Jaws 87 and 89 are formed in a part of the cold and hot water supply passages 71a and 71b of the base 73 and a part of the cold and hot water supply holes 73a and 73b of the base 73, and the jaws 87 and 89 are fitted to the inner wall surface. It is to achieve. The sealing structure also leaks when the disc lower plate 71 floats from the position of (a) to the position of (b) during water hammering and the first rubber packing 77 is separated as shown in (c). Can be.

On the other hand, there is a process of plastic processing in the furnace during the manufacturing process of the ceramic disk, in which the ceramic will bend while shrinking. Therefore, after plastic working, it is necessary to flatten and mirror the surface, but the flat outer surface can be flattened and mirrored, but in the case of the intaglio jaw 87, the flattened work is impossible, so the curved negative jaw is eventually The rubber packing comes into contact with the inner surface of the 87 to seal.

Therefore, the sealing structure of Figure 4b is the same phenomenon as the pressing amount of the rubber packing for each water valve cartridge is not constant, there is a quality problem that the cartridge operating torque transmitted through the adjuster 63 varies for each water valve Occurs.

Thirdly, in the case of FIG. 4C), the first rubber packing and the second rubber packing are connected to each other, and one end of one rubber packing 91 is fitted to the jaw 87 made at a predetermined height on the disc lower plate 71. The other end extends to the water valve body 53 so as to form the entire inner wall surface of the cold / hot water supply holes 73a and 73b.

In this structure, the rubber packing 91 is easily plastically deformed due to the gap 85 extending between the base 19 and the disc lower plate 71 floating from (a) to (b) during water hammering. It can be detached, the jaw 87 is engraved in the disk lower plate 71 and one end of the integrated rubber packing is inserted into the groove, so as in the sealing structure of Figure 4b) cartridge for each water valve There is a quality problem that the operating torque varies.

In addition, in the case of FIGS. 4A, 4B, and 4C, a coupling piece 73d is provided around the base 73 so as to couple the base 73 and the disc lower plate 71. Not only that, but also the disk lower plate 71 requires a coupling groove 71d into which the coupling piece 73d is fitted. This structure increases the diameter of the base 73 and the disk lower plate 71, so that the cost of the expensive ceramic is a problem.

The present invention is to solve the above problems, so as to operate the handle of the water valve sharply to prevent water leakage even when the disc lower plate temporarily floats during water hammering occurs when the flow of water is momentarily blocked. Not only can the rubber packing be prevented from being damaged, but also the cartridge operating torque of each valve is improved to improve the quality, and the diameter can be reduced by removing the coupling protrusions and coupling pieces of the base and the lower plate of the disk. To provide a water valve cartridge sealing structure that can be saved.

In order to achieve the above object, in the present invention, a disk lower plate having a cold / hot water supply passage and a discharge passage, and a base on which the disk lower plate is seated to determine a supply path of cold / hot water are installed inside the water valve cartridge. The packing insertion grooves formed around the cold and hot water supply holes and the discharge holes are formed deeper than the height of the rubber packing so that contact grooves having a predetermined depth are formed on the rubber packing inserted into the packing insertion grooves. The packing protrusions are formed in the contact grooves of the base, respectively, to seal the base and the disc lower plate. In addition, an annular protrusion is provided at the edge of the base and a recessed disc lower plate seating groove is formed at the center thereof so that the disc lower plate is seated in the seating recess.

By this sealing structure, even if water hammering occurs in the water valve cartridge and the disc lower plate temporarily floats upward, the packing protrusion of the disc lower plate is in the packing insertion groove of the base so that no leakage occurs, and the rubber packing is released. As a result, deformation and damage can be prevented. In addition, since the packing protrusions for flattening and mirror surface polishing on the lower plate of the disc come in contact with the rubber packing, the cartridge operating torque of each valve can be constant to improve quality, and the lower plate of the disc is inserted into the seating groove of the base. Because it is losing form, the cost can be reduced by reducing the diameter by removing the coupling protrusion and the coupling piece.

1 is a cross-sectional view of a cartridge sealing structure according to the present invention.

2 is a perspective view and an exploded perspective view of a general water valve

3 is a perspective view and an exploded perspective view of a general water valve cartridge

4 is a cross-sectional view of a conventional cartridge sealing structure;

<Explanation of symbols for the main parts of the drawings>

51: water valve 5, 53: valve body

55: water valve cartridge 63: adjuster

19,69: top disc 17,71: bottom disc

11,73: Base 21,23,25,77,79,91: Rubber packing

27: packing insertion groove 29: contact groove

31: packing protrusion 39: seating groove

7, 73a, 73b: cold and hot water supply hole 9, 73c: cold and hot water discharge hole

13, 71a, 71b: Hot and cold water supply passage 15, 71c: Cold and hot water discharge passage

Hereinafter, a preferred embodiment of the sealing structure of the water valve cartridge according to the present invention will be described in detail with reference to the accompanying drawings.

First, Figures 1 a) and b), c) is a case where the sealing structure according to the present invention is applied to the general water valve of Figure 2 and the general water valve cartridge of Figure 3 provided inside the water valve.

The present invention provides a valve body (5) having a hot and cold water supply pipe (1) and a discharge port (3) in the water valve cartridge and a base having a supply hole (7) and a discharge hole (9) installed on the valve body (5). 11), having a supply passage 13 and a discharge passage 15 and installed on the disc lower plate 17 and the disc lower plate 17 of a ceramic material installed on the base 11 and exited from the supply passage 13 The sealing structure of the portion consisting of a disk top plate 19 of a ceramic material for guiding water to the discharge passage 15, Figure 1a is an example in which the first rubber packing 21 and the second rubber packing 23 is installed separately 1B) is an example of one rubber packing 25 to which a first rubber packing and a second rubber packing are connected.

First, in FIG. 1A, the packing insertion groove 27 is formed deeper than the height of the first rubber packing 21 in the upper and lower peripheral portions of the cold and hot water supply hole 7 and the discharge hole 9 formed in the base 11. A contact groove 29 of a predetermined depth h is formed on the first rubber packing 21 inserted into the packing insertion groove 27, while the disc lower plate 17 has a contact groove of the base 11. A packing protrusion 31 is formed to fit between the base 11 and the disc lower plate 17, and is formed around the 29 and the periphery of the cold / hot water supply hole 7 and the discharge hole 9 of the base 11. At the lower end, a packing insertion groove 33 having a second rubber packing height is formed, and the second rubber packing 23 is inserted. In addition, an annular projection jaw 35 is provided at the edge of the base 11, and the disc lower plate 17 is seated in the seating groove 39 by forming a concave disc lower plate seating groove 39 at the center thereof. It is supposed to be.

Therefore, even if the water hammering occurs at an instantaneous high pressure due to the sudden number of stages, the packing protrusions 31 are moved up and down in the contact grooves 29 of the base 11 even when the disc lower plate 17 temporarily floats up. Since the movement prevents leakage and at the same time it can prevent the first rubber packing 21 is separated or deformed.

In addition, the packing protrusion 31, which is the portion where the disc lower plate 17 is in contact with the rubber packing 21, forms the outer surface of the disc lower plate 17, so that the flattening and mirror surface polishing operations can be performed during the manufacturing process. The amount of pressing of the rubber packing can be made constant so that the cartridge operating torque delivered every time can be expected to improve the quality. In addition, since the disk lower plate 17 fits into the mounting groove formed in the base 11, the coupling groove 71d of the disk lower plate and the coupling protrusion 71d of the base are unnecessary, so that the disk lower plate 17 and the base 11 are not included. ) Diameter becomes small. In particular, it is possible to save ceramics, which account for a large part of the manufacturing cost, which is a significant cost reduction effect.

The structure of FIG. 1 b) is the height of the rubber packing 25 and the one rubber packing 25 to which the first and second rubber packings are connected at the lower end of the peripheral surface 37 of the cold / hot water supply hole 7 of the base 11. An annular guide 41 directly contacting the water while being higher by a predetermined height h is inserted in order to contact the base 11 of the upper end of the rubber packing 25 and the guide 41 as in the case of FIG. 1A. Groove 29 is formed. In addition, a packing protrusion 31 is formed on the disc lower plate 17 to fit into the contact groove 29.

In the embodiment of FIG. 1 b), even when water hammering occurs and the disk lower plate temporarily floats upward, the contact groove 29 formed by the peripheral surface 37 of the cold / hot water supply hole of the base 11 and the annular guide 41 is formed. Since it moves up and down at the same time to prevent leakage and at the same time can prevent the rubber packing 25 is separated or deformed.

In addition, the disk lower plate 17 of FIG. 1B) is the same shape as the disk lower plate of FIG. 1A, and the packing protrusion 31 can be flattened and mirrored, so that the cartridge operating torque delivered to each water valve is constant. Since the disk lower plate 17 is fitted in contact with the peripheral surface 37 of the cold / hot water supply hole of the base 11, the coupling groove of the disk lower plate 17 and the coupling piece of the base 11 are removed. The diameter of the lower plate 17 of the ceramic material can be reduced to reduce the cost.

As described above, according to the sealing structure of the water valve cartridge according to the present invention, the packing insertion grooves formed around the cold and hot water supply holes and the discharge holes formed in the base are formed deeper than the height of the rubber packing, and the rubber packing inserted into the packing insertion grooves. While contact grooves having a predetermined depth are formed thereon, the disc lower plate is formed in a structure having a packing protrusion formed in each of the contact grooves of the base to pack the base and the disc lower plate, or around the lower end of the supply and discharge holes of the base. One rubber packing and a guide higher than the height of the rubber packing are sequentially inserted, and the packing protrusion formed between the base and the guide formed on the top of the rubber packing is fitted with a packing protrusion formed on the bottom of the disc.

With this structure, the water hammering occurs when the flow of the water valve is momentarily blocked by rapidly operating the knob of the water valve so that the packing protrusion moves up and down within the contact groove of the base even if the disc bottom plate floats up. Therefore, it is possible to prevent leakage and at the same time prevent the first rubber packing from being separated or deformed.

In addition, in the sealing structure according to the present invention, since the packing protrusion, which is the portion where the disc lower plate is in contact with the rubber packing, forms the outer surface of the disc lower plate, the flattening and mirroring polishing can be performed during the manufacturing process, and the same cartridge operation is performed for each water valve. Adjusting the amount of pressing of the rubber packing so that torque is transmitted, there is an effect that can improve the quality.

In addition, since the disc lower plate is fitted into the mounting groove formed in the base, the coupling piece of the disc lower plate and the base are unnecessary, so that the diameter of the base becomes small. In particular, it is possible to reduce the amount of use of ceramics, which account for a large part of the manufacturing cost, and to reduce the size of plastics and planarized polishing processes, since a large number of disks can be processed and polished at a time, thereby reducing the cost.

Claims (2)

Adjusting the inside and inside of the cartridge housing, the bush for guiding the control and the seat cap sliding back and forth by the adjuster under the bush and the seat cap rotates back and forth, left and right to adjust the opening and closing of the cold and hot water The disc in the water valve cartridge having a disc top plate, a disc bottom plate having a supply and discharge passage of cold and hot water under the disc top plate, and a base under which the hot and cold water supply hole and the discharge hole are formed as a lower end of the cartridge housing. In the sealing structure consisting of one or more rubber packing for sealing between the lower plate and the base and between the base and the valve body, The packing insertion grooves 27 formed around the cold and hot water supply holes 7 and the discharge holes 9 formed in the base 11 are formed deeper than the heights of the rubber packings 21 and 25, respectively. The contact grooves 29 of a predetermined depth are formed on the rubber packings 21 and 25 inserted into the rubber packings 21 and 25, respectively, and the contact grooves 29 of the base 11 are respectively inserted into the lower plate 17 of the disk. 11) and the sealing structure of the cartridge of the water valve, characterized in that it comprises a structure formed with a packing protrusion 31 for packing between the disk lower plate 17 According to claim 1, wherein the base 11 is provided with an annular protruding jaw 35 and a concave seating groove 39 is formed at the center thereof so that the disk lower plate 17 is seated on the base 11. Sealing structure of the cartridge of the water valve, characterized in that it comprises a structure seated in the groove (39)