KR200377865Y1 - Inner casing for water meter and water meter having the same - Google Patents

Abstract

Water meter according to the present invention, the water meter body having an inlet and outlet, the lower inner shell having an inlet and outlet hole, the inlet and the outlet hole so that the water introduced into the water meter body, the inner shaft and the lower inner shell It has a rotor blade assembly rotatably installed therein, the insertion axis through which the axis of rotation of the rotor assembly passes and is coupled with one side of the rotation shaft of the rotor assembly projecting through the insertion hole of the upper inner shell and the upper inner shell installed to cover the upper portion of the lower inner shell. It includes a counting device interlocked with the rotation of the assembly, characterized in that the boss portion in close contact with the rotating shaft on one side of the upper inner shell is provided to be connected to the insertion hole. According to this, since the contact area between the blade assembly and the upper inner shell is increased by the boss portion, the risk that water in the lower inner shell passes between the rotation axis of the blade assembly and the insertion hole of the upper inner shell is reduced to the side of the counting device.

Description

Inner casing for water meter and water meter having same {Inner casing for water meter and water meter having the same}

The present invention relates to a water meter, and more particularly, to an upper inner shell for a water meter and an improved water meter having the same to prevent foreign substances from entering the counting device provided inside the water meter.

In general, the water meter is to measure the amount of water supplied for a certain period of time by accurately measuring the flow rate of the constant water supplied to the user, such as home or factory, it is installed separately in the water supply line connected to the user side.

Conventional water meter, as shown in Figure 1, includes the upper and lower outer shell 10, 20, upper and lower inner shell 30, 40, vane assembly 50 and the counting device 60. .

The lower outer shell 20 has an inlet 20a and an outlet 20b and is connected to a water supply line. A strainer 21 is installed at the inlet 20a, and the strainer 21 prevents foreign substances contained in the constant supplied through the water supply line from being introduced into the water meter.

The upper outer shell 10 is installed to be sealed with the lower outer shell 20 on the upper portion of the lower outer shell (20). The upper portion of the upper outer shell 10 is opened, and the open portion is opened and closed by a cap 11 pivotally coupled to the upper outer shell 10.

The lower inner shell 40 is installed between the inlet 20a and the outlet 20b inside the lower outer shell 20. A plurality of inflow holes 40a are formed in the lower outer periphery of the lower inner shell 40, and a plurality of outflow holes 40b are formed in the upper outer periphery of the lower inner shell 40. The water introduced through the inlet 20a of the lower outer shell 20 flows into the inlet hole 40a of the lower inner bag 40 and passes through the outlet hole 40b of the lower inner bag 40 and then the lower outer bag 20. Out of the outlet 20b.

The upper inner shell 30 is installed on the lower outer shell 20 to seal the open upper portion of the lower inner shell 40. As shown in Figure 2a and 2b, the insertion hole (30a) is formed in the substantially central portion of the upper inner shell 30, the lower portion of the upper inner shell 30 is installed so that a plurality of resistance plates 31 protrude.

The vane assembly 50 includes a vane 51 and a rotating shaft 52 integrally coupled to the vane 51. As shown in FIG. 1, the blade wheel 51 is rotatably installed in the lower inner shell 40, and the rotation shaft 52 is inside the upper inner shell 30 through the insertion hole 30a of the upper inner shell 30. Protrudes. A gear portion 53 is provided at one side of the rotation shaft 52 protruding into the upper inner shell 30. The blade assembly 50 is rotated by the flow of water introduced into the lower inner shell (40).

The counting device 60 includes a plurality of gears 61, 62, a counting unit 63, and a transparent plate 64. One gear 61 of the plurality of gears 61 and 62 is connected to the gear unit 53 of the rotary shaft 52 to interlock with the vane assembly 50, and the counting unit 63 is the vane assembly 50. It is operated by a plurality of gears 51, 52 that are driven by. The transparent plate 64 is installed to be exposed to the open upper portion of the upper outer shell 10.

Referring to Figure 1 the operation of the water meter made of this configuration as follows.

Water introduced through the inlet 20a of the lower outer shell 20 flows through the strainer 21 to the lower inner shell 40. Water introduced into the inlet hole 40a of the lower inner shell 40 rotates the blade wheel 51 of the vane assembly 50 and then passes through the outlet hole 40b of the lower inner shell 40 to lower the outer shell 20. Exit to the outlet 20b of the.

As such, the vane assembly 50 is rotated by the water passing through the lower inner shell 20, and the counting device 60 is operated by the rotating vane assembly 50 to measure the amount of water supplied.

However, in the conventional water meter as described above, the water flowing into the lower inner shell 40 passes between the insertion hole 30a of the upper inner shell 30 and the rotation shaft 52 of the vane assembly 50, and thus the counting device ( 60) has a problem that flows into. When foreign matters are included in the water introduced into the counting device 60 as described above, the foreign matter is caught between the plurality of gears 61 and 62 to cause a malfunction of the counting device 60.

The present invention was devised in view of the above problems, the upper inner shell for the water meter and the water meter having the same to reduce the occurrence of malfunction of the water meter by suppressing the inflow of water into the water meter device provided inside the water meter The purpose is to provide.

The upper inner shell for a water meter according to a preferred embodiment of the present invention for achieving the above object is characterized in that it has a boss in close contact with the rotary shaft of the blade assembly to drive the counting device.

Here, the boss portion is preferably protruded to the lower inner shell side in which the blade assembly is rotatably installed.

On the other hand, the water meter according to a preferred embodiment of the present invention, the water meter body having an inlet and an outlet, the lower inner shell, blade car and the blade having an inlet and outlet holes so that the water introduced into the body of the water meter A rotor blade assembly having a connected rotation shaft and rotatably installed in the lower inner shell, an insertion hole through which the rotating shaft of the blade assembly passes, and an upper inner shell installed to cover the upper portion of the lower inner shell, and an insertion hole of the upper inner shell, And a counting device coupled to one side of the protruding blade assembly and interlocked with the rotation of the blade assembly, wherein one side of the upper inner shell has a boss portion in close contact with the rotary shaft and is connected to the insertion hole.

Hereinafter, with reference to the accompanying drawings will be described for the upper inner case and the water meter having a water meter according to a preferred embodiment of the present invention.

As shown in Figure 3, the water meter according to a preferred embodiment of the present invention, the water meter body 110, upper and lower inner shell 140, 150, vane assembly 160 and the counting device 170 It includes.

The water meter body 110 is composed of an upper outer shell 120 and a lower outer shell 130.

The lower outer shell 130 has an inlet 130a and an outlet 130b, and is connected to the water supply line so that a flow path of water is formed between the inlet 130a and the outlet 130b. Inside the lower outer shell 130, a through hole 130c substantially perpendicular to a virtual connection line connecting the inlet port 130a and the outlet port 130b is provided. Water introduced through the inlet 130a is changed in a substantially vertical direction when passing through the through hole 130c. A strainer 131 is installed at the inlet 130a. The strainer filters out foreign substances contained in the water flowing through the inlet 130a to prevent foreign substances from flowing into the water meter body 110.

The upper outer shell 120 is coupled to the lower outer shell 130 and sealed to the upper portion of the lower outer shell 130. The upper portion of the upper outer shell 120 is open, the cap 121 is pivotally coupled to one side of the upper outer shell 120. The cap 121 opens and closes the open upper portion of the upper outer shell 120.

The lower inner shell 150 is installed inside the lower outer shell 130 to cover the through hole 130c of the lower outer shell 130. A plurality of inflow holes 150a are formed at the outer periphery of the lower inner shell 150, and a plurality of outflow holes 150b are formed at the upper outer periphery of the lower inner shell 150. Water introduced through the inlet 130a of the lower outer shell 130 is guided to the inlet hole 150a of the lower inner shell 150 and introduced into the lower inner shell 150. The water introduced into the lower inner shell 150 is rotated through the outlet hole 150b of the lower inner shell 150 after rotating the blade assembly 160 to be described later.

The upper inner shell 140 is coupled to the upper upper lower shell 130 so that its lower surface seals the open upper portion of the lower inner shell 150. The upper inner shell 140 has an insertion hole 140a, a resistance plate 141, and a boss portion 142, as shown in Figs. 4A and 4B. Insertion hole (140a) is formed in approximately the center of the upper inner shell 140, the resistance plate 141 is provided with a plurality of approximately equal intervals around the outer insertion hole (140a) of the upper inner shell 140.

The boss portion 142 is installed to protrude toward the lower inner shell 150 on the outer side of the upper inner shell 140, such as the resistance plate 141. The boss portion 142 has an inner diameter substantially equal to the diameter of the insertion hole 140a, and the boss portion 142 has an inner diameter and the insertion hole 140a having the same central axis. The height of the boss 142 protruding from the lower surface of the upper inner shell 140 may be the same as the height of the resistance plate 141 protruding from the upper inner shell 140, but the present invention is not limited thereto. That is, the protruding height of the boss 142 may be larger or smaller than the height at which the resistance plate 141 protrudes. In addition, the boss 142 and the plurality of resistor plates 141 may be integrated as shown in FIG. 4B, and may be spaced apart from each other although not illustrated. The boss portion 142 increases the contact area between the outer diameter of the rotary shaft 162 and the upper inner shell 140 of the blade assembly 160 to be described later, the water introduced into the lower inner shell 150, the upper inner shell 140 The risk of leakage into the insertion hole 140a of the) is reduced.

The vane assembly 160 includes a vane 161 and a rotating shaft 162 integrally coupled to the vane 161. As shown in FIG. 3, the blade 161 is rotatably installed in the lower inner shell 150, and the rotation shaft 162 is disposed through the boss 142 and the insertion hole 140a of the upper inner shell 140. It protrudes inside the upper inner shell 140. The gear part 163 is provided at one side of the rotation shaft 162 protruding into the upper inner shell 140. The blade assembly 160 is rotated in proportion to the flow rate of the water passing through the inside of the lower inner shell 150.

The counting device 170 is installed above the upper inner shell 140 inside the upper outer shell 120, and includes a gear assembly 171, a counting unit 174, and a transparent plate 175. The gear assembly 171 includes a plurality of gears 172 and 173, and any one gear 172 of the plurality of gears 172 and 173 includes a gear 163 of the rotation shaft 162. Gear is connected. The counting unit 174 is connected to and interlocked with the gear assembly 171. Therefore, when the blade assembly 160 is rotated by the water flowing in the lower inner shell 150, the gear assembly 171 and the counting unit 174 is operated in conjunction with this. The transparent plate 175 is installed to cover the counting unit 174 and to be exposed to the open upper portion of the upper outer shell 120.

Operation of the water meter according to the present invention made of such a configuration is made as follows.

As shown in FIG. 3, the water passing through the inlet 130a of the lower outer shell 130 connected to the water supply line is introduced into the lower outer shell 130 through the strainer 131. At this time, foreign matter contained in the incoming water is filtered by the strainer 131. Water introduced into the lower outer shell 130 is guided into the lower inner shell 150 through the inlet hole 150a of the lower inner shell 150. The water introduced into the lower inner shell 150 rotates the blade wheel 161 of the blade assembly 160 while forming a vortex in the lower inner shell 150. At this time, the resistance plate 141 and the boss 142 of the upper inner shell 140 helps to form the vortex of water introduced into the lower inner shell 150.

When the water flowing in the lower inner shell 150 rotates the blade assembly 160, the gear assembly 171 and the counting unit 174 of the counting device 170 are operated in conjunction with the blade assembly 160. Since the blade assembly 160 rotates in proportion to the flow rate of the water passing through the lower inner shell 150, the amount of water introduced through the inlet 130a of the lower outer shell 130 is measured through the counting unit 174.

The water that rotates the blade car 161 inside the lower inner shell 150 exits through the outlet hole 150b of the lower inner shell 150, and then is discharged to the outlet 130b of the lower outer shell 130.

In the present invention as described above, because the boss portion 142 provided on the upper inner shell 140 increases the adhesion area between the rotary shaft 162 and the upper inner shell 140 of the vane assembly 160, the lower inner shell ( 150, the risk of the water leaking through the insertion hole 140a of the upper inner shell 140 to the counting device 170 side is reduced. Therefore, as in the prior art, foreign matter contained in the water flows into the counter device 170, thereby reducing the problem that the counter device 170 malfunctions.

According to the present invention as described above, since the contact area between the blade assembly and the upper inner shell is increased by the boss portion provided in the upper inner shell, the water in the lower inner shell between the rotation axis of the blade assembly and the insertion hole of the upper inner shell The risk of leaking through the counter to the counter is reduced. Therefore, it is possible to implement a water meter with reduced occurrence of malfunction of the counting device and improved operation reliability.

As described above, the present invention has been illustrated and described with respect to preferred embodiments of the present invention, but the present invention is not limited to the configuration and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes, modifications, and equivalents should be considered to be within the scope of the present invention.

Figure 1 is a side cross-sectional view schematically showing a water meter with a conventional upper inner shell,

Figure 2a is a side cross-sectional view showing a conventional upper inner shell shown in Figure 1,

Figure 2b is a bottom view showing the conventional upper inner shell shown in Figure 1,

Figure 3 is a side cross-sectional view schematically showing a water meter with an upper inner shell according to a preferred embodiment of the present invention,

Figure 4a is a side cross-sectional view showing the upper inner shell according to a preferred embodiment of the present invention shown in Figure 3,

Figure 4b is a bottom view showing the upper inner shell according to a preferred embodiment of the present invention shown in FIG.

<Description of Symbols for Major Parts of Drawings>

110; water meter body 120, 130; upper and lower outer shell

130a; inlet 130b; outlet

140,150; upper and lower inner shell 140a; insert hole

141; resistance plate 142; boss portion

150a; inlet hole 150b; outlet hole

160; vane assembly 161; vane

162; rotating shaft 163; gear unit

170; Counting device 171; Gear assembly

174 counting unit 175 transparent plate

Claims (4)

It is installed between the lower inner shell through which the water flowing into the water meter body passes and the counting device operated by a vane assembly rotatably installed in the lower inner shell, and has an insertion hole through which the rotating shaft of the vane assembly passes. In the upper inner shell for water meter The upper inner shell for water metering instrument, one side of the upper inner shell is provided so that the boss portion in close contact with the rotating shaft is connected to the insertion hole. The method of claim 1, The upper inner shell for water metering unit, characterized in that the boss projecting toward the lower inner shell. A water meter body having an inlet and an outlet; A lower inner shell having an inlet hole and an outlet hole so that water introduced into the water meter body passes; A vane assembly having a vane and a rotating shaft connected to the vane, rotatably installed in the lower inner shell; An upper inner shell having an insertion hole through which the rotating shaft of the vane assembly passes and installed to cover an upper portion of the lower inner shell; And And a counting device coupled to one side of a rotation shaft of the vane assembly protruding through the insertion hole of the upper inner shell and interlocked with the rotation of the vane assembly. The upper inner shell, the water meter, characterized in that the boss portion in close contact with the rotation shaft is provided on one side thereof is connected to the insertion hole. The method of claim 3, wherein The upper inner shell for water metering unit, characterized in that the boss projecting toward the lower inner shell.