KR20210007714A - A diaphragm valve - Google Patents

Abstract

The present invention relates to a diaphragm valve which can be applied to a small water purifier in a compact structure. According to the present invention, the small diaphragm valve comprises: a housing having an opened upper portion, a water inlet pipe formed on one side thereof, a water outlet pipe formed on the other side thereof, and a first connection flow path provided on the outside thereof and isolated from an internal space to be vertically extended to connect the lower end thereof to the water outlet pipe; a disk to move water entering through the water inlet pipe therethrough to an upper side in the housing and close a flow path connected to the water outlet pipe to prevent the water from being discharged to the water outlet pipe; a diaphragm coupled to a lower portion of the disk; a valve body coupled to an upper portion of the housing and provided with a bobbin unit formed on an upper portion thereof and provided with a hollow shaft on the outer circumferential surface thereof allowing a coil to be wound thereon, a lower body unit covering an upper opening of the housing and formed on a lower portion thereof, a communication hole allowing the lower body unit and the hollow shaft of the bobbin unit to communicate with each other to allow water entering between the lower body unit and the housing to flow into the hollow shaft of the bobbin unit, and a second connection flow path to connect the inside of the hollow shaft and the first connection flow path of the housing to each other; a plunger inserted into the hollow shaft of the valve body to be arranged to be vertically moved, lowered when a current is not applied to the coil to close the second connection flow path, and lifted when a current is applied to the coil to open the second connection flow path; and an upper cap covering the valve body from outside, wherein the lower end thereof is coupled to the housing.

Description

Compact diaphragm valve{A DIAPHRAGM VALVE}

The present invention relates to a diaphragm valve, and more particularly, to a small diaphragm valve that can be applied to block a flow path of a small device with a compact structure.

In general, a water purifier purifies raw water and supplies at least one of cold water, hot water, and purified water by cooling, heating, or directly discharging the purified purified water at room temperature. Furthermore, it also supplies ionized water recently. Such a water purifier selectively supplies cold water, hot water, purified water, or ionized water to a user by manipulating a cock valve, and the cock valve of the water purifier is largely divided into a mechanical cock valve method and an electronic cock valve method. Mechanical cock valves are structured to discharge water by opening the spout port by raising the vertical shaft that was normally closing the spout port by operating a lever, and in the electronic cock valve, when the button is pressed, the electronic outlet valve opens and water is discharged. It is composed of a discharged structure. Meanwhile, a magnetic type diaphragm valve is mainly used as an electronic outlet valve used for such an electronic cock valve. For this reason, there are cases where the vertical size is about 60mm, which is not suitable for water purifiers that are trending toward miniaturization. The diaphragm valve as described above can be used as a valve for not only the water outlet valve but also the inlet valve of the water purifier or other devices requiring flow control.There is a need to develop a small diaphragm valve that can be applied to various small devices including water purifiers. Actually.

Republic of Korea Patent Publication No. 2016-0089085 Korean Patent Registration No. 10-0454034

The present invention has been invented to solve the disadvantages of the conventional diaphragm valve as described above, and an object of the present invention is to provide a small diaphragm valve that is applicable to the flow control of a small device with a compact structure.

The compact diaphragm valve according to the present invention for achieving the above object is a housing with an open top and a space formed therein, with an inlet pipe formed on one side and a water outlet pipe on the other side, and an inner space part on the outside A housing having a first connection passage connected to the water outlet pipe as the lower end thereof is isolated from and extends vertically; A disk disposed to partition the interior of the housing up and down, and closing a flow path connected to the water outlet pipe so as to pass water introduced through the water intake pipe upward and not to be discharged through the water outlet pipe; A diaphragm coupled to the lower portion of the disk; A bobbin part is formed on the upper part of the housing and provided with a hollow shaft on which the coil is wound on an outer circumferential surface thereof, and a lower body part covering the upper opening of the housing is formed at the lower part, and flows between the lower body part and the housing. A communication hole for mutually communicating the hollow shaft of the lower body portion and the bobbin portion so that the water flows into the hollow shaft of the bobbin portion, and a second connection passage for interconnecting the inside of the hollow shaft and the first connection passage of the housing are formed. A valve body; It is inserted into the hollow shaft of the valve body and disposed to be vertically movable, and when current is not applied to the coil, it is lowered to close the second connection channel, and when current is applied to the coil, it is raised to open the second connection channel. With a plunger; The valve body is covered from the outside and a lower end includes an upper cap coupled to the housing.

Here, in the inner center of the housing, a protruding tube body protruding upward from the bottom surface and communicating with the water outlet pipe is formed, an inlet pipe communicating with the inlet pipe of the housing is formed at a lower portion of the disk, and the inlet pipe A distribution hole communicating with the inlet pipe is formed at an upper portion corresponding to and a sealing protrusion for closing a protruding pipe body formed in the center of the housing is formed at a lower center of the disk.

On the other hand, coupled to the outer circumferential surface of the valve body, one end is connected to a coil wound on the outer circumferential surface of the hollow shaft, and the other end further includes a pair of terminal bodies to which a power cable for receiving current from an external power supply is connected.

Here, a small diaphragm valve, characterized in that terminal body insertion grooves into which the terminal bodies are respectively inserted and coupled are formed on both left and right sides of the outer peripheral surface of the valve body.

In addition, the terminal body insertion groove is formed in an arcuate shape in each of the left and right sides of the outer peripheral surface of the lower body of the valve body, and the terminal body has a power cable connection part and a coil connection part extending horizontally at both ends of the valve body. It protrudes outward and the central portion is concavely curved in an arcuate shape and is inserted into the arcuate terminal body insertion groove.

In addition, a terminal body fitting hole is formed to protrude in a radial direction at an inner center of the terminal body insertion groove, and a fastening groove fitted to the terminal body fitting hole is formed in the center of the concave curved portion of the terminal body.

And, the valve body is coupled with a shielding bracket that shields the magnetic field generated when a current is applied to the coil from the upper side and one side, the shielding bracket is an upper shielding plate covering the upper side of the valve body, and one side of the upper shielding plate. And a side shielding plate extending downwardly to shield one side of the valve body, and a lower coupling piece coupled to the valve body from a lower side.

Here, the upper shielding plate is formed in a disk shape corresponding to the upper shape of the valve body, the side shielding plate is curved in an arc shape corresponding to the shape of the outer peripheral surface of one side of the valve body, and the lower coupling piece is the valve It is inserted into the engaging piece insertion groove formed on the outer peripheral surface of the lower body portion of the body.

In addition, the engaging piece insertion groove is formed concave along the outer peripheral surface of the valve body so that the cross section is formed in a'C' shape, and the lower engaging piece is configured in a'C' shape corresponding to the shape of the engaging piece insertion groove. desirable.

According to the present invention as described above, the configuration covering the upper part of the bobbin and the housing is integrated into the valve body, the shielding bracket is improved to the built-in structure, and there is no separate connection pipe installed on the outside. By connecting the first connection channel and the second connection channel, it has the advantage that it is composed of a compact structure compared to the existing diaphragm, and can be applied to regulate the flow path of a small device.

1 is a perspective view of a small diaphragm valve according to the present invention,
2 is an exploded view of a small diaphragm valve according to the present invention,
3 is a cross-sectional view of a housing of a small diaphragm valve according to the present invention,
4 is a configuration diagram of a disk and a diaphragm of a small diaphragm valve according to the present invention,
5 is a perspective view of a valve body of a small diaphragm valve according to the present invention,
6A is a side cross-sectional view of a valve body of a small diaphragm valve according to the present invention,
6B is a first plan sectional view of the valve body of the small diaphragm valve according to the present invention,
6C is a second plan sectional view of the valve body of the small diaphragm valve according to the present invention,
6D is a third plan sectional view of the valve body of the small diaphragm valve according to the present invention,
7 is an operational state diagram of a small diaphragm valve according to the present invention.

Hereinafter, the configuration and operation of the small diaphragm valve 100 according to the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

1 and 2, the small diaphragm valve 100 according to the present invention includes a housing 110, a disk 120, a diaphragm 130, a valve body 140, a coil 150, and a plunger. It includes (180) and an upper cap (190).

The housing 110 is generally composed of a cylindrical enclosure with an open upper portion and a closed lower portion, and is connected to the raw water transfer pipe (not shown) of the water purifier on the left and right sides, and the inlet pipe 111 into which raw water is introduced and the water outlet from which raw water is discharged. Each of the tubes 112 is provided. 3 is a side cross-sectional view of the housing 110. As shown in FIG. 2, a protruding pipe body 113 protruding upward from the bottom surface and communicating with the water outlet pipe 112 is provided in the center of the housing 110. The protruding tube 113 is configured in a state that is always closed by the disk 120 and the diaphragm 130 as described later. For the installation of the disk 120 and the diaphragm 130, as shown in FIG. 3, the inner circumferential surface of the housing 110 has an annular shape so that the circumference of the ends of the disk 120 and the diaphragm 130 can be seated. The stepped 114 is formed to protrude.

Meanwhile, as shown in FIGS. 2 and 3, a first connection passage 116 is additionally provided in the housing 110. The first connection channel 116 is a flow path that is isolated from the inner receiving portion of the housing 110 and formed vertically on the outside, the lower end is connected to the water outlet pipe 112 of the housing 110, and the upper end is a valve to be described later. It is configured to communicate with the second connection passage 146 of the body 140. In order to be isolated from the inner receiving portion of the housing 110, the first connection passage 116 is formed vertically through the thickness outside the inner receiving portion of the housing 110, as shown in FIG. It may be configured as a separate tube.

4 shows an exploded top perspective view (a) and a bottom exploded perspective view (b) of the disk 120 and the diaphragm 130.

The disk 120 is arranged to partition the inside of the housing 110 up and down, and the water introduced through the inlet pipe 111 passes through the upper side of the housing 110 but is discharged through the water outlet pipe 112 It is to close the flow path connected to the water outlet pipe 112 so that it does not have a disk shape and is disposed inside the housing 110. As shown in (b) of FIG. 4, an inlet pipe 121 inserted and coupled to the outside of the protruding pipe body 113 so as to communicate with the inlet pipe 111 of the housing 110 at a lower portion of one side of the disk 120 ) Is formed, and in the upper portion corresponding to the inlet pipe 121, a distribution hole 122 communicating with the inlet pipe 121 is formed as shown in (a) of FIG. 4. In addition, in the lower center of the disk 120, as shown in (b) of FIG. 4, the sealing protrusion is inserted into the protruding pipe body 113 formed in the center of the housing 110 to close the protruding pipe body 113 ( 124) is formed.

On the other hand, as shown in (a) of Figure 4, the upper surface of the disk 120 is provided with a concentric inner wall 125 and an outer wall 126 spaced apart at predetermined intervals in the radial direction as necessary. It is possible, and it is preferable that a plurality of cut surfaces 127 are cut at regular intervals at the front end of the inner wall 125. Accordingly, the water introduced through the inlet pipe 121 flows into the upper portion of the disk 120 through the distribution hole 122 and is first filled between the outer wall 126 and the inner wall 125, and then the cut surface 127 ) Through the inner power and can be sequentially filled.

On the other hand, the lower side of the disk 120 prevents a large amount of water in the lower portion of the housing 110 from flowing into the upper side, and prevents the pressure of the relatively high-pressure raw water from being transmitted to the upper inner side of the housing 110. A diaphragm 130 is provided. The diaphragm 130 is configured in a generally flat disk shape, and as shown in FIG. 4, a first coupling hole 132 through which the sealing protrusion 124 of the disk 120 is inserted is formed in the center, At one side, a second coupling hole 134 through which the inlet pipe 121 of the disk 120 is inserted is formed. Accordingly, the diaphragm 130 prevents raw water from moving to the upper side of the housing 110 through any other place other than the inlet pipe 121 inserted into the second coupling hole 134, thereby unifying the flow path and preventing unnecessary leakage. It performs the function of preventing.

A valve body 140 is coupled to the upper side of the housing 110. The valve body 140 is a main body in which various components for the operation of the diaphragm valve 100 according to the present invention are combined and a flow path is formed. 5 shows a perspective view of the valve body 140, and FIG. 6A shows a side cross-sectional view of the valve body 140. As shown, the valve body 140 is largely composed of a bobbin part 140A and a lower body part 140B.

The bobbin part 140A is provided on the upper part of the valve body 140, and a hollow shaft 141 on which a coil 150 for applying current is wound is formed on the outer circumferential surface, and at the upper and lower portions of the hollow shaft 141 A circular upper plate 142 and a lower plate 143 are formed so that the coils 150 respectively wound are not separated. The hollow shaft 141 has an upper opening so that the plunger 180 can be inserted from the upper side, and the lower portion is separated from the lower body 140B by a lower partition wall 144. The inner hollow of the hollow shaft 141 is lower than the lower plate 143, that is, to the upper part of the lower body 140B to be described later in order to secure a predetermined distance through which the plunger 180 can rise and fall. Is formed to extend.

The lower body part 140B is provided under the bobbin part 140A and combined with the above-described housing 110 located at the lower side to receive water therein and transfer the received water to the water outlet pipe 112 by way. This is the part that provides the flow path that makes it possible. As shown in FIG. 6A, the lower body portion 140B has a lower opening and a concave upper receiving space formed therein to engage and engage the upper opening of the housing 110 disposed at the lower side. Accordingly, a certain space is formed between the upper portion of the housing 110 and the lower body portion 140B of the valve body 140, and water flowing into the inlet pipe 111 is transferred to the disk 120 as described below. ) Is introduced and received through the inlet pipe 121.

As described above, the water received between the upper portion of the housing 110 and the lower body portion 140B of the valve body 140 is moved to the water outlet pipe 112 as the plunger 180 to be described later rises. It is transferred to the bypass. To this end, a communication hole (144a) and a second connection passage (146) are formed in the lower body of the valve body (140). Specifically, as shown in Figure 6a, the communication hole (144a) is the lower receiving space of the lower body portion (140B) at one side of the lower partition wall 144 of the lower body portion (140B) of the valve body (140) It is vertically penetrated to communicate with each other, and the second connection passage 146 is formed to connect the center portion of the lower partition wall 144 and the first connection passage 116 of the housing 110. In the embodiment shown in FIG. 6A, the second connection passage 146 extends vertically downward from the center of the lower partition wall 144 and then horizontally extends to the outside and further outward than the lower accommodation space of the lower body 140B. After extending to the protruding protruding lateral protrusion part, it is formed to extend downwardly to the lateral protrusion 145, so that when the valve body 140 is coupled to the housing 110, the end of the second connection passage 146 is connected to the first It is configured to be connected to the flow path 116. Here, the second connection passage 146 extends horizontally to the end of the side protrusion 145 for convenience during injection, and water is not discharged from the horizontal end side to the outside and the first connection of the housing 110 As shown in FIGS. 2 and 7, a blocking ball 146a may be coupled to the opening at the end of the side protrusion 145 so that it can be transferred only to the flow path 116. The central portion of the lower partition wall 144 is preferably formed to protrude upward at a predetermined height so that the plunger 180 to be described later can smoothly close the entrance side of the second connection passage 146.

The plunger 180 is inserted into the hollow shaft 141 of the bobbin part 140A of the valve body 140. The plunger 180 opens and closes the second connection passage 146 according to the vertical movement. More specifically, the plunger 180 is a bar-shaped member made of iron, and in normal times, the lower end closes the entrance side of the second connection passage 146 in the center of the lower partition wall 144, and then the bobbin part 140A When a current is applied to the coil 150 wound on the outer circumferential surface of the hollow shaft 141 of ), it is moved upward by the generated magnetic field to open the second connection channel 146. 2 and 7, the plunger 180 has a spring 184 that presses the plunger 180 downward on the upper side, and a stopper at the upper opening of the hollow shaft 141 of the valve body 140 (182) is fitted, and the upper end of the spring 184 is supported by the stopper 182. Accordingly, when current is not applied to the coil 150 wound around the outer circumferential surface of the hollow shaft 141 of the bobbin part 140A, the plunger 180 is pressed downward by the spring 184 to connect the second When the flow path 146 is closed and current is applied to the coil 150, the plunger 180 rises, and when the current is cut off, the plunger 180 moves downward again by the spring 184. This operation will be described in more detail later.

Meanwhile, a terminal body 160 is coupled to the outer peripheral surface of the valve body 140. The terminal body 160 has one end connected to the coil 150 wound around the outer circumferential surface of the hollow shaft 141, and a power cable 195 for receiving current from an external power source is connected to the other end. As shown, a total of two are coupled to each of the left and right sides of the outer circumferential surface (specifically, the lower body portion 140B) of the valve body 140. Both ends of the coil 150 are coupled to each end of the two terminal bodies 160, and power cables 195 are coupled to each of the multi-stage sides of each of the two terminal bodies 160 to form a closed circuit. It is configured so that current can be supplied from an external power source. At this time, the terminal body 160, the coil 150, and the power cable 195 may be connected by spot welding, or may be connected by various methods such as a separate connector or a bundle fastening method.

In FIG. 2, the structure of the terminal body 160 is shown in detail. As shown, the terminal body 160 has a power cable connection portion 162 and a coil connection portion 164 formed horizontally at both ends, respectively, and a terminal body coupling hole 148 of the valve body 140 to be described later in the center portion. A fastening groove 166 is formed to be fitted in). The terminal body 160 may be formed in a straight shape, but as will be described later, the central portion is concavely curved in an arc shape so that it is inserted into and stably coupled to the terminal body insertion groove 147 of the valve body 140, It is preferable that the fastening groove 166 is formed in the center of the curved portion. In addition, the fastening groove 166 of the terminal body 160 is preferably formed with a stepped on both sides of the left and right so that the terminal body coupling hole 148 to be described later is caught and supported.

6B is a cross-sectional view of the valve body 140 of FIG. 5 cut horizontally based on line A-A'. As shown in FIGS. 5 and 6B, terminal body insertion grooves 147 are formed on both left and right sides of the outer peripheral surface of the lower body of the valve body 140, respectively, in which the inner cross section is curved in an arcuate shape. As shown in FIG. 6B, the terminal body insertion groove 147 is formed outside the lower end of the hollow shaft 141, and the left and right terminal body insertion grooves 147 are configured to be spaced apart from each other even if they are formed symmetrically. do. Further, in the inner center of each of the terminal body insertion grooves 147, terminal body coupling holes 148 are formed to protrude in the radial direction, respectively. The terminal assembly 148 has a narrow front side and wide left and right sides of the terminal assembly 148, but has a stepped side. 6C is a cross-sectional view illustrating a state in which the terminal body 160 is coupled to the outer peripheral surface of the lower body 140B of the valve body 140. As shown, the terminal body 160 is inserted into the terminal body insertion grooves 147 respectively formed on the left and right sides of the outer peripheral surface of the lower body portion 140B of the valve body 140, and the terminal body is coupled to the fastening groove 166 The sphere 148 is fitted. At this time, the terminal body 160 is stably fastened and fixed within the terminal body insertion groove 147 as the stepped jaws of the terminal body fitting hole 148 are caught and supported by the stepped jaws inside the fastening groove 166.

Meanwhile, a shielding bracket 170 is additionally coupled to the valve body 140. Shielding bracket 170 increases the strength of the magnetic field that moves the plunger 180 by shielding the magnetic field generated when current is applied to the coil 150 at the top and one side so that the magnetic field is concentrated to the center of the valve body 140 It is to let. As shown in Figure 2, the shielding bracket 170 is an upper shielding plate 172 covering the upper side of the valve body 140, and extending downward from one side of the upper shielding plate 172, the valve body It includes a side shielding plate 174 for shielding one side of the 140, and a lower coupling piece 176 coupled to the valve body 140 from the lower side.

The upper shielding plate 172 is configured in a disk shape corresponding to the upper shape of the valve body 140, and the side shielding plate 174 is curved in an arc shape corresponding to the shape of one outer peripheral surface of the valve body 140 Is formed.

The lower coupling piece 176 is coupled to the outside of the valve body 140. 2 and 5, a coupling piece insertion groove 149 is formed on the outer peripheral surface of the lower body portion 140B of the valve body 140, more specifically, on the upper side of the terminal body insertion groove 147 do. The coupling piece insertion groove 149 is formed to be concave along the outer peripheral surface of the valve body 140 so that the cross section is formed in a'C' shape. In addition, the lower coupling piece 176 is configured in a'C' shape corresponding to the shape of the coupling piece insertion groove 149. 6D is a cross-sectional view taken horizontally based on line B-B' of FIG. 5. From Figure 6b, the'C'-shaped lower coupling piece 176 of the shielding bracket 170 is inserted into the'C'-shaped coupling piece insertion groove 149 formed in the lower body portion 140B of the valve body 140. Can be confirmed.

Meanwhile, as shown in FIGS. 1 and 2, an upper cap 190 is coupled to the outside of the valve body 140. The upper cap 190 covers the valve body 140 from the outside, and the lower end is fixedly coupled to the housing 110 by fasteners such as bolts 194. The upper cap 190 is generally configured in a cylindrical shape with an open lower portion corresponding to the external shape of the valve body 140, and a coil connection part 164 and a power cable connection part 162 of the terminal body 160 respectively on the outside. An expanded space (not provided with a drawing number) is formed to accommodate the power cable, and a cable insertion hole 192 is provided at the location where the power cable connection part 162 is embedded so that the power cable 195 can be inserted from the outside. Is formed.

The configuration of the small diaphragm valve 100 according to the present invention has been described so far. Hereinafter, with reference to FIG. 7, the operation relationship of the small diaphragm valve 100 according to the present invention will be described. 7(a) shows a cross-sectional view of a state before power is applied to the coil 150 of the small diaphragm valve 100 according to the present invention, and FIG. 7(b) shows a case in which power is applied to the coil 150 The operating state diagram of is shown.

First, as shown in (a) of FIG. 7, when power is not applied to the coil 150 during normal times, the plunger 180 is pressed downward by the spring 184 and the second connection passage 146 Is in a closed state. Then, the sealing protrusion 124 of the disk 120 is inserted into the protruding pipe body 113 of the housing 110 to close the protruding pipe body 113. Therefore, the water flowing into the intake pipe 111 cannot be moved to the protruding pipe body 113, and between the housing 110 and the valve body 140 through the inlet pipe 121 and the distribution hole 122 of the disk 120 Flows into the space formed in When the space is filled with water, it flows into the hollow shaft 141 to the lower side through the communication hole 144a formed in the lower partition wall 144 of the hollow shaft 141. At this time, since the plunger 180 is in a lowered state, the second connection passage 146 is closed by the plunger 180 so that the water is in a standby state without any further flow.

On the other hand, when the user operates the button of the water purifier to discharge water, power is supplied from a separate power supply unit (battery) through the power cable 195. Accordingly, current is applied to the terminal body 160 connected to the power cable 195 and the coil 150 connected thereto. When a current flows through the spirally wound coil 150, a magnetic field is generated, and by this magnetic field, as shown in Fig. 7(b), the plunger 180, which is a conductor, rises and the second connection passage ( 146) is opened. At this time, the spring 184 on the upper side of the plunger 180 is in a compressed state. Through this operation, the water introduced through the inlet pipe 111 and passed through the disk 120 and introduced into the hollow shaft 141 through the communication hole 144a is transferred through the second connection channel 146 . Since the second connection channel 146 is connected to the first connection channel 116 of the housing 110, and the first connection channel 116 is connected to the water outlet pipe 112, the second connection channel 146 The water introduced into the water is transferred through the first connection channel 116 and the water outlet pipe 112. Although not shown, the water outlet pipe 112 is connected to the water purifier cock, and accordingly, water is discharged through the water purifier cock so that the user can drink it.

When the current supply to the coil 150 is cut off again, the magnetic field is extinguished and the plunger 180 is pressed and moved downward by the restoring force of the spring 184, whereby the second connection channel 146 is closed. As a result, water transfer to the water outlet pipe 112 is blocked.

In the above, specific embodiments of the present invention have been described. However, the spirit and scope of the present invention is not limited to these specific embodiments, and various modifications and variations are possible within the scope of not changing the subject matter of the present invention. Anyone who has it will understand. Therefore, the embodiments described above are provided to completely inform the scope of the invention to those of ordinary skill in the technical field to which the present invention belongs, and should be understood as illustrative and non-limiting in all respects, The invention is only defined by the scope of the claims.

100: diaphragm valve 110: housing
111: inlet pipe 112: outlet pipe
113: protruding tube 114: stepped
116: first connecting channel
120: disk 121: inlet pipe
122: distribution hole 124: sealing protrusion
125: inner wall 126: outer wall
127: incision surface 130: diaphragm
132: first coupling hole 134: second coupling hole
140: valve body 141: hollow shaft
142: upper plate 143: lower plate
144: lower bulkhead 144a: communication hole
145: lateral protrusion 146: second connection passage
146a: blocking ball 147: terminal body insertion groove
148: terminal body fitting 149: coupling piece insertion groove
140A: bobbin part 140B: lower body part
150: coil 160: terminal body
162: power cable connection 164: coil connection
166: fastening groove 170: shielding bracket
172: upper shielding plate 174: side shielding plate
176: lower coupling piece 180: plunger
182: stopper 184: spring
190: upper cap 192: cable insertion hole
194: bolt 195: power cable

Claims (9)

As a case with an open upper part and a space part formed therein, an inlet pipe 111 is formed on one side and a water outlet pipe 112 is formed on the other side, and the lower part is separated from the inner space part and extends up and down. A housing 110 having a first connection passage 116 connected to the pipe 112;
A water outlet pipe 112 that is arranged to partition the interior of the housing 110 up and down, and allows water introduced through the inlet pipe 111 to pass through the upper side of the housing 110 but is not discharged through the water outlet pipe 112 ) And a disk 120 for closing the flow path connected to;
A diaphragm 130 coupled to the lower portion of the disk 120;
A bobbin part 140A coupled to an upper portion of the housing 110 and having a hollow shaft 141 wound around an outer circumferential surface thereof is formed at an upper portion, and an upper opening of the housing 110 is formed at the lower portion. The lower body part 140B is formed to cover the lower body part 140B so that the water introduced between the lower body part 140B and the housing 110 flows into the hollow shaft 141 of the bobbin part 140A. 140B) and a communication hole (144a) for mutually communicating the hollow shaft 141 of the bobbin portion (140A), and interconnecting the inside of the hollow shaft 141 and the first connection passage 116 of the housing 110 A valve body 140 having a second connection passage 146 for;
It is inserted into the hollow shaft 141 of the valve body 140 and disposed to be vertically movable, but when current is not applied to the coil 150, it descends to close the second connection passage 146, and the coil 150 ) A plunger 180 that is raised when current is applied to open the second connection passage 146;
A small diaphragm valve comprising an upper cap 190 covering the valve body 140 from the outside. The method of claim 1,
In the inner center of the housing 110, a protruding tube body 113 is formed that protrudes upward from the bottom surface and communicates with the water outlet pipe 112, and the housing 110 is obtained at a lower portion of one side of the disk 120. An inlet pipe 121 communicating with the pipe 111 is formed, and a distribution hole 122 communicating with the inlet pipe 121 is formed at an upper portion corresponding to the inlet pipe 121, and the disk 120 A small diaphragm valve, characterized in that in the lower center of the housing (110) a sealing protrusion (124) is formed to close the protruding tube (113) formed in the center of the housing (110). The method according to claim 1 or 2,
It is coupled to the outer circumferential surface of the valve body 140, one end is connected to the coil 150 wound on the outer circumferential surface of the hollow shaft 141, the other end is connected to a power cable 195 for receiving current from an external power source. Small diaphragm valve, characterized in that it further comprises a pair of terminal bodies (160). The method of claim 3,
A small diaphragm valve, characterized in that terminal body insertion grooves 147 into which the terminal bodies 160 are respectively inserted and coupled are formed on both left and right sides of the outer peripheral surface of the valve body 140. The method of claim 4,
The terminal body insertion groove 147 has an inner cross section curved in an arc shape on both left and right sides of the outer peripheral surface of the lower body of the valve body 140, and the terminal body 160 is a power cable connection part 162 extending horizontally at both ends. ) And a coil connection part 164 is formed to protrude to the outside of the valve body 140, and the central part is formed to be curved concave in an arcuate shape, and is inserted into and coupled to the terminal body insertion groove 147 formed in the arcuate shape. . The method of claim 5,
In the inner center of the terminal body insertion groove 147, a terminal body coupling hole 148 is formed to protrude in the radial direction, and the terminal body coupling hole 148 is fitted in the center of the concave curved portion of the terminal body 160 A small diaphragm valve, characterized in that the fastening groove 166 is formed. The method of claim 1,
The valve body 140 is coupled with a shielding bracket 170 that shields the magnetic field generated when a current is applied to the coil 150 from the top and one side, and the shielding bracket 170 covers the upper side of the valve body 140. An upper shielding plate 172 covering, a side shielding plate 174 extending downward from one side of the upper shielding plate 172 to shield one side of the valve body 140, and the valve body 140 from the lower side. A small diaphragm valve, characterized in that it comprises a lower coupling piece (176) coupled to. The method of claim 7,
The upper shielding plate 172 is configured in a disk shape corresponding to the upper shape of the valve body 140, and the side shielding plate 174 is curved in an arc shape corresponding to the shape of one outer peripheral surface of the valve body 140 Is formed, and the lower coupling piece (176) is a small diaphragm valve, characterized in that inserted into the coupling piece insertion groove (149) formed on the outer peripheral surface of the lower body portion (140B) of the valve body (140). The method of claim 8,
The coupling piece insertion groove 149 is formed concave along the outer circumferential surface of the valve body 140 so that the cross-section is formed in a'C' shape, and the lower coupling piece 176 is in the shape of the coupling piece insertion groove 149 A small diaphragm valve, characterized in that it is configured in a corresponding'C' shape.

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