KR100954126B1 - Water flow meter - Google Patents

Abstract

It is an object of the present invention to provide a water meter which can achieve the basic corrosion protection function in the meter body and improve the installation and assembly of the corrosion preventing pipe member and the impeller assembly.

The present invention for achieving the above object, the meter body is connected to both ends of the water supply pipe, the both ends penetrate a fluid passage therein; An impeller assembly rotatably supporting an impeller rotated by a fluid flowing into the fluid passage and installed in the fluid passage of the meter body; A water meter comprising a corrosion preventing pipe member connected to the impeller assembly and installed in the fluid passage, wherein the impeller assembly has a case having an operating space formed therein so that the impeller is embedded and rotated, and the fluid A fluid inlet hole and a fluid outlet hole formed on the front and rear side walls of the case in a flow direction, respectively, and smaller than an inner diameter of the fluid passage, and disposed inside each of the fluid inlet / outlet holes, It is formed to be integral with the case and is composed of a front supporter and a rear supporter to rotatably support the impeller located in the working space portion, the meter body is formed in the recess in communication with it in a direction perpendicular to the fluid passage, Case for inserting case And an installation groove, wherein the corrosion preventing pipe member is inserted into contact with the inner wall surface of the fluid passage at one end of the meter body to be in close contact with the case front wall around the fluid inlet hole, and the meter It is characterized in that the rear end of the anti-corrosion pipe member is inserted in contact with the inner wall surface of the fluid passage at the other end of the body and in close contact with the rear wall of the case around the fluid discharge hole.

Water, Meter, Corrosion, Prevention, Pipe

Description

Water flow meter

The present invention relates to a water meter, and to a water meter which can achieve the basic corrosion protection function in the meter body and improve the installation and assembly of the corrosion-proof pipe member and the impeller assembly.

In general, the water meter is a device for measuring the amount of water supply is installed in any buried section near the demand of the buried section of the water supply pipe, it is connected between the adjacent water supply pipe.

On the other hand, the water supply pipe is manufactured so that the anti-corrosion coating layer is formed on the inner wall surface to prevent corrosion of the inner wall of the pipe by tap water so that the tap water can be safely supplied sanitary.

However, since the water meter connected between the water supply pipes does not have a means for exerting corrosion protection, the tap water in the water supply pipe is corroded while passing through the inside of the water meter even though it is sanitary and safe. There was a downside to this deterioration.

In order to solve this problem, recently, a technique of coating or lining a corrosion protection layer to a predetermined thickness has been proposed as a method for exerting a corrosion protection function on an inner wall surface of a water meter body.

However, the process of forming a corrosion protection layer coated or lining (lining) on the inner wall surface of the flow meter of the water meter is complicated and difficult to increase the manufacturing cost, there was an inefficient problem in terms of productivity.

And, if the water meter coated or lined with a corrosion protection layer needs to be replaced due to long use, the water protection meter must be separated and recycled after the waste treatment method. The corrosion protection layer is coated or lined by As it is formed on the inner wall of the flow meter body of the water meter, the separation process is not only complicated, but also requires a separate facility for separation, which is economically inefficient in terms of recycling.

In order to solve this problem, the present applicant has developed Korean Patent Registration No. 10-0682847 (hereinafter, referred to as 'prior art'), which has been patented on December 21, 2005.

As shown in FIG. 1, the eco-friendly synthetic resin pipe member 200 is inserted and installed in the entire inner wall of the passage 112 of the meter body 110.

Thereafter, the rotating body 710 rotated by the flowing fluid (tap water), a cylinder 720 which accommodates the rotating body 710 and rotatably supports one side thereof, and is installed outside the cylinder 720. And assembling and installing the driving means 700 including the supporter 730 rotatably supporting the other side of the rotating body 710 in the fluid flow direction in the pipe member 200, and then displaying power 500 and power. A rotating shaft 610 for rotating the rotating plate 600 connected to be transmitted is installed through the inside of the meter body 110 to guide the rotating shaft 710 to be rotated by receiving the rotational force of the rotating body 710 and the meter body 110. The leakage preventing member 300 was assembled in the order of screwing to the fastening hole 220 of the pipe member 200 so that the fluid flowing into the inside of the pipe member 200 was not leaked.

However, it was possible to prevent corrosion by inserting the eco-friendly synthetic pipe member 200 into the entire inner wall of the passage 112 of the meter body 110, but the driving means 700 in the pipe member 200 The internal structure of the pipe member 200 is to be changed so that the constituent components are installed.

That is, the stepped portion 200a is provided on the inner wall surface of the tubular member 200 so that the supporter 721 formed integrally with the cylinder 720 is installed, and the stepped portion is provided on the inner wall surface of the tubular member 200 so that the supporter 730 is installed. Part 200b, to form a fastening hole 220 of the screw hole in the pipe member 200 to be coupled to the leakage preventing member 300, and the outer surface of the pipe member 200 to the passage of the meter body 110 There is a problem in that the manufacturing cost of the pipe member 200 is increased to correspond to the stepped inner wall surface shape of (112). That is, after the tubular member 200 having a corrosion protection function is manufactured into a cylindrical shape that can be inserted into the passage 112 of the meter body 110, the stepped portions 200a and 200b are formed on the inner surface of the tubular member 200 in a second manner. ) And the fastening hole 220 had to be processed separately.

In addition, since the prior art inserts and installs the driving means 700 in the fluid flow direction in the pipe member 200, the stepped portions 200a and 200b and the fastening hole 220 are formed on the inner surface of the pipe member 200 in a second manner. There was also a problem in that mutual assembly with the driving means 700 is not made smoothly when a manufacturing error occurs.

The present invention has been made to solve the above problems, and provides a water meter to achieve the basic corrosion protection function in the meter body and to improve the installation and assembly of the corrosion preventing pipe member and the impeller assembly. For the purpose of

The present invention for achieving the above object, the meter body is connected to both ends of the water supply pipe, the both ends penetrate a fluid passage therein; An impeller assembly rotatably supporting an impeller rotated by a fluid flowing into the fluid passage and installed in the fluid passage of the meter body; A water meter comprising a corrosion preventing pipe member connected to the impeller assembly and installed in the fluid passage, wherein the impeller assembly has a case having an operating space formed therein so that the impeller is embedded and rotated, and the fluid A fluid inlet hole and a fluid outlet hole formed on the front and rear side walls of the case in a flow direction, respectively, and smaller than an inner diameter of the fluid passage, and disposed inside each of the fluid inlet / outlet holes, It is formed to be integral with the case and is composed of a front supporter and a rear supporter to rotatably support the impeller located in the working space portion, the meter body is formed in the recess in communication with it in a direction perpendicular to the fluid passage, Case for inserting case And an installation groove, wherein the corrosion preventing pipe member is inserted into contact with the inner wall surface of the fluid passage at one end of the meter body to be in close contact with the case front wall around the fluid inlet hole, and the meter It is characterized in that the rear end of the anti-corrosion pipe member is inserted in contact with the inner wall surface of the fluid passage at the other end of the body and in close contact with the rear wall of the case around the fluid discharge hole.

According to the present invention, it is possible to basically achieve the corrosion protection function in the meter body, and to improve the installation and assembly of the corrosion prevention pipe member and the impeller assembly, and the cylindrical shape which can insert the corrosion prevention pipe member into the fluid passage of the meter body. Since the production process can be reduced, the manufacturing process of the anti-corrosion pipe member can be shortened, thereby reducing the production cost.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention includes: a meter body (10) having both ends connected to a water supply pipe (1) (2), and having a fluid passage (11) penetrating both ends therein; An impeller assembly 20 installed in the fluid passage 11 (diameter D1) of the meter body 10 and rotatably supporting the impeller 21 rotated by the fluid flowing into the fluid passage 11; ; In the water meter, which is connected to the impeller assembly 20 and includes an anti-corrosion pipe member 30 installed in the fluid passage 11, the impeller assembly 20 and the anti-corrosion pipe member 30 are installed. It is about.

The impeller assembly 20 includes a case 23 having an operating space S formed therein so that the impeller 21 is embedded and rotated therein, and the front and rear side walls 24 of the case 23 in the flow direction of the fluid. And a fluid inlet hole 24a and a fluid outlet hole 25a which are formed in communication with the working space S and formed smaller than the inner diameter of the fluid passage 11, respectively, and the fluid inlet / outlet The front supporter 26 disposed inside each of the balls 24a and 25a to be integral with the case 23 and rotatably supporting the impeller 21 located in the working space S. And a rear supporter 27.

Therefore, the impeller assembly 20 according to the present invention is formed integrally with the impeller 21 and the case 23 provided with the front and rear supporters 26 and 27.

On the other hand, the meter body 10 is provided with a concave inlet is formed in communication with the fluid passage 11 in the perpendicular direction and is provided with a case installation groove 15 for inserting the case 23.

The anti-corrosion pipe member 30 may use any one of glass, synthetic resin, nonferrous metal, and stainless as its material, and is inserted into contact with the inner wall surface of the fluid passage 11 at one end of the meter body 10. It is inserted in contact with the inner wall surface of the fluid passage 11 at the other end of the front side anti-corrosion pipe member 31 in close contact with the case front wall 24 around the fluid inlet hole (24a) and the meter body (10) The back side corrosion preventing pipe member 33 is in close contact with the case rear wall 25 around the fluid discharge hole 25a.

Here, the inner diameter D2 of the corrosion preventing pipe member 30 may be smaller than the inner diameter D1 of the fluid passage 11.

And, the inner diameter (D2) of the corrosion preventing pipe member 30 may be formed to be the same as the inner diameter (D3) of the fluid outlet holes (24a, 25a) formed in the case 23 to minimize the fluid flow resistance, The inner diameter D2 and the inner diameter D3 may not necessarily be identical.

A front fluid leakage preventing ring 32 is installed between the front corrosion preventing pipe member 31 and the case front wall 24, and a rear fluid leak prevention is prevented between the rear corrosion preventing pipe member 31 and the case rear wall 25. Ring 34 is installed.

Here, the front fluid leakage ring (32) is inserted into the ring insertion groove (23a) formed in a circular shape in the case front wall (24), the rear fluid leakage ring (34) is circular in the case rear wall (25) It is inserted into the ring insertion groove 23b formed.

On the other hand, the front wall 24 and the rear wall 25 of the case 23 according to the present invention is made of a flat surface, the front and rear fluid leakage preventing ring when the front and rear corrosion preventing pipe members 31, 33 are in close contact ( 32) 34 can be more easily installed and installed.

That is, when the front wall 24 and the rear wall 25 of the case 23 are formed in a convex curved surface instead of a flat surface, the front and rear side corrosion preventing pipe members closely contacting the front wall 24 and the rear wall 25. It is not necessary to form the end shape of (31) (33) so that it may concavely round.

In other words, the outer shape of the case 23 according to the present invention may be formed in a quadrangular shape as shown in FIGS. 2 and 3, and may be formed in a cylindrical shape although not illustrated. In the case where the exterior shape of the case 23 of the present invention is formed into a cylindrical shape, the front surface 24 and the rear wall 25 are formed so that the convex curved surface becomes an uneven flat surface. When the members 31 and 33 are in close contact, the front and rear fluid leakage preventing rings 32 and 34 can be more easily seated and installed.

In addition, the case installation groove 15 may also be formed differently so that the case 23 may be inserted according to the appearance shape of the case 23.

Here, reference numerals (1) and (2) are water supply pipes, and (1a) and (2a) are coupling flange portions respectively formed on the end sides of the water supply pipes (1) and (2).

And, 11 is a flange portion which protrudes on the outer surface side of both ends of the meter body 10 to be fastened to the coupling flange portion (1a) (2a) of the water supply pipe (1) (2) via the fastening bolt (50). to be.

And, 40 is a corrosion preventing gasket ring which is installed between the coupling flange portion (1a) (2a) of the water supply pipe (1) (2) and the flange portion 11 formed in the meter body 10, corrosion prevention pipe The member 30 is made of a material which prevents the member 30 from being released from being inserted into the fluid passage 11 of the meter body 10 and is not corroded by tap water.

And 41 is a fastening bolt for coupling the corrosion preventing gasket ring 40 to both end sides of the meter body 10, and 42 is a fluid leakage disposed between the corrosion preventing gasket ring 40 and both end sides of the meter body 10. It is a prevention ring.

2 and 3, the flange portion 23f is formed along the upper outer surface of the case 23, and the case 23 is inserted into the case installation groove 15, such as a bolt. After passing through the flange portion 23f through the fastening means, the flange portion 23f is coupled to the meter body 10, and the case 23 may be fixed to the meter body 10.

In addition, of course, a corresponding flange portion (not shown) may be formed around the case installation groove 15 in the outer surface of the meter body 10 corresponding to the flange portion 23f.

It is noted that the flange portion 23f is not shown in the sectional view of FIG. 4.

Referring to the assembly method of the water meter according to the present invention configured as described above are as follows.

First, when the case 23 is inserted into the case mounting groove 15 of the meter body 10, the front supporter 26 and the rear supporter 27 of the case 23 constituting the case 23 are the meter body. It is located in the fluid passage 11 of (10).

Thereafter, the front anti-corrosion pipe member 31 constituting the anti-corrosion pipe member 30 is inserted in contact with the inner wall surface of the fluid passage 11 at one end of the meter body 10 so as to contact the fluid inlet hole 24a. It is assembled in close contact with the peripheral case front wall 24.

Next, the rear anti-corrosion pipe member 33 constituting the anti-corrosion pipe member 30 is inserted into contact with the inner wall surface of the fluid passage 11 at the other end of the meter body 10 so as to contact the fluid discharge hole 25a. ) Assemble close contact with the rear wall 25 around the case.

Therefore, according to the present invention configured as described above, the impeller assembly 20 having the impeller 21 and the case 23 provided with the front and rear supporters 26 and 27 as an integrated body is a case of the meter body 10. After inserting into the installation groove 15, the front and rear side corrosion preventing tube members 31 and 33 constituting the corrosion preventing tube member 30 are respectively inserted into the fluid passage 11 at both end sides of the meter body 10. As a result, assembling of the impeller assembly 20 and the anti-corrosion pipe member 30 formed integrally can be performed quickly, and the assemblability can be improved. In addition, since the anti-corrosion pipe member 30 according to the present invention can basically achieve the anti-corrosion function and can be manufactured in a tubular shape that can be inserted into the fluid passage 11 of the meter body 10, the corrosion prevention pipe member 30 is separately provided as in the prior art. Since the stepped parts 200a and 200b and the fastening hole 220 do not need to be separately formed on the inner surface of the corrosion resistant pipe member 30, the production cost can be reduced.

In addition, in the configuration of the present invention, the upper portion of the case 23 is formed with a working space S and a concave concave space S1, and the rotation speed of the impeller 21 is defined in the concave space S1. Measuring means (not shown) for detecting and measuring the flow rate of the tap water is installed, the measuring means may be applied to the electronic or mechanical currently known.

1 is a cross-sectional view showing the internal configuration of a water meter according to the prior art.

Figure 2 is an exploded perspective view of the main portion of the water meter according to the present invention, an exploded perspective view of the meter body and the impeller assembly.

Figure 3 is an external perspective view of the impeller assembly according to the present invention, a perspective view showing the rear supporter side.

4 is a combined cross-sectional view of the water meter according to the present invention, a combined cross-sectional view including a water supply pipe and a corrosion preventing pipe member and an impeller assembly.

5 is a cross-sectional view of the leader line "A-A" shown in FIG.

FIG. 6 is a sectional view of the leader line "B-B" shown in FIG. 4; FIG.

FIG. 7 is a sectional view of the leader line "C-C" shown in FIG. 4; FIG.

FIG. 8 is a cross-sectional view of the leader line “D-D” shown in FIG. 4. FIG.

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

1,2: water supply pipe

10: meter body

11: fluid passage

20: impeller assembly

21: impeller

30: corrosion resistant pipe member

Claims (5)

A meter body 10 having both ends connected to the water supply pipes 1 and 2 and having a fluid passage 11 penetrating both ends therein; An impeller assembly (20) rotatably supporting an impeller (21) rotated by a fluid flowing into the fluid passage (11) and installed in the fluid passage (11) of the meter body (10); In the water meter, which is connected to the impeller assembly 20 and comprises an anti-corrosion pipe member 30 is installed in the fluid passage 11, The impeller assembly 20 includes a case 23 having an operating space S formed therein so that the impeller 21 is built and rotated therein, and front and rear side walls of the case 23 in the flow direction of the fluid. The fluid inlet hole 24a and the fluid outlet hole 25a which are formed in communication with the working space S and formed smaller than the inner diameter of the fluid passage 11, respectively, and the fluid inlet 24, 25, respectively. The front supporter disposed inside each of the discharge holes 24 and 25 and formed integrally with the case 23 and supporting the impeller 21 positioned in the working space S rotatably. 26) and the rear supporter 27, The meter body 10 has a concave inlet formed in communication with the fluid passage 11 at right angles, and has a case installation groove 15 for inserting and installing the case 23. The anti-corrosion pipe member 30 is inserted in contact with the inner wall surface of the fluid passage 11 at one end of the meter body 10 to be in close contact with the case front wall 24 around the fluid inlet hole 24a. And a case rear wall 25a around the fluid discharge hole 25 inserted into the front side corrosion preventing pipe member 31 and the inner wall surface of the fluid passage 11 at the other end of the meter body 10. Water meter, characterized in that consisting of the back side corrosion-resistant pipe member 33. The method of claim 1, Between the front corrosion prevention pipe member 31 and the case front wall 24, the front fluid leakage preventing ring 32 is installed, Water meter, characterized in that the rear fluid leakage prevention ring 34 is installed between the rear corrosion prevention pipe member 33 and the case rear wall (25). The method of claim 1, The exterior shape of the case 23 is a water meter, characterized in that the rectangular or cylindrical body. The method according to any one of claims 1 to 3, Water meter, characterized in that the front wall (24) and the rear wall (25) of the case is formed in a plane. The method of claim 1, The material of the anti-corrosion pipe member 30 is water, characterized in that any one of glass, synthetic resin, non-ferrous metal, stainless.

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