JP2577629Y2 - Flow path cleaning device using balls - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow path cleaning apparatus using a ball in which a ball is passed through a flow path together with a fluid to clean the flow path.

[0002]

2. Description of the Related Art Conventionally, there has been known the above-described apparatus shown in FIG. 3 for cleaning a flow path inside and outside a heat transfer tube in a heat exchanger. The fluid circulation pipes 6 and 7 are formed between the respective flow paths 4 and 5 communicating with the two fluid supply and discharge ports 2 and 3 on the heat exchanger 1 side. In addition, a ball circulation pump P is interposed in the pipes 6 and 7, and a ball collecting mechanism 9 for receiving the ball 8 and passing only the fluid is provided at the start end of the pipe 7 on the suction side. .

Japanese Patent Application Laid-Open No. 63-32298 discloses that a ball 8 is inserted into respective flow paths 4 and 5 communicating with two flow ports 2 and 3 of a heat exchanger 1 as shown in FIG. Ball catching mechanism 10, which receives and passes only fluid,
11 is described.

In FIGS. 3 and 4, a solid arrow a indicates a moving direction of the ball 8 when a fluid flows in a direction of a solid white arrow a ', and a broken arrow b indicates a direction of a broken white arrow b'. The moving direction of the ball 8 when the fluid flows in the direction is shown.

[0005]

However, the one shown in FIG. 3 is disadvantageous in that a separate ball circulation pump P is required, and that the ball circulation pump P is used for backwashing by changing the moving direction of the ball 8. There is a disadvantage that the P and the ball collection mechanism 9 must be replaced. Also,
The one shown in FIG. 4 had a problem that the ball 8 clogged the flow path and hindered the flow of the fluid.

The present invention has been made in view of the above-mentioned drawbacks and problems, and it is an object of the present invention to continuously perform cleaning by reciprocating a ball in a flow path without separately installing a ball circulation pump. It is an object of the present invention to provide a flow path cleaning device using a ball, which is designed so that the ball does not obstruct the flow of the fluid when a heat exchanger or the like is operated by flowing a fluid through the flow path. I do.

[0007]

SUMMARY OF THE INVENTION In a flow path cleaning apparatus using a ball according to the present invention, a check valve mechanism is provided at each of two points in a flow path, in which the flow directions of fluids regulated by the check valve mechanisms are separated from each other. Each one is interposed in a state where it turns,
Corresponding to the respective check valve mechanisms, chambers communicating with the two flow paths sandwiching the intervening point of the check valve mechanism and having an internal flow path as a ball capturing space are provided, respectively. The ball enters the corresponding check valve mechanism side through the flow path into the communication point between the flow path and the chamber located between the respective check valve mechanisms interposed at the two places of the flow path. A grid member is provided to prevent the ball from flowing into the internal flow path of the chamber, and a grid member is provided at another communication location. It is what is being done.

The above-mentioned flow path includes not only a flow path formed by a piping system, but also various equipment such as a flow path between heat transfer tubes of a heat exchanger and a flow path between tube sheets interposed in the piping system. An internal flow path such as a container is also included.

[0009]

The operation of the flow channel cleaning device constructed as described above will be described with reference to FIG. When the fluid flows through the flow path 20 from right to left, the flow direction of the fluid regulated by the check valve mechanism V2 is from left to right.
2 through the lattice member 42 without passing through the chamber C2.
(See solid arrow a '). For this reason, the ball trapped in the chamber C2 is pushed out by the fluid as indicated by the solid arrow a and exits the chamber C2, and then passes through the flow path 20 and is trapped in the other chamber C1. The check valve mechanism V1 corresponding to the chamber C1 that has captured the ball 8
Is from left to right and coincides with the flow direction a 'of the fluid at that time, the fluid passes through the check valve mechanism V1 and flows through the flow path 20, Fluid flow is not obstructed by the balls 8 trapped in the chamber C1.

[0010] When the fluid flows from left to right, the ball exits chamber C1 and then passes through channel 20 again.
In the chamber C2. Also, the fluid can pass through the check valve mechanism V2. Therefore, also in this case, the flow of the fluid is not hindered by the ball 8 captured in the chamber C2.

[0011]

FIG. 1 is an explanatory view showing a first embodiment of the present invention in principle. In the figure, reference numeral 20 denotes a flow path, V1 and V2.
Are first and second check valve mechanisms, which are interposed separately at two places in the flow path 20. The flow direction of the fluid regulated by the first check valve mechanism V1 is determined to be from right to left, and the flow direction of the fluid regulated by the second check valve mechanism V2 is to be from left to right. Stipulated. That is, the first non-return valve mechanism V1 and the second non-return valve mechanism V2 are in opposite directions in which the flow directions of the fluids regulated by them are separated from each other.

First and second check valve mechanisms V
First and second chambers C1 and C2 are provided respectively corresponding to the first and second chambers V1 and V2, respectively. The first chamber C1 communicates with the two locations M1 and M2 of the flow path 20 sandwiching the intervening location of the first check valve mechanism V1 and the internal flow path 2
1 is a space for catching the ball 8. Similarly, the second
The chamber C2 communicates with two locations N1 and N2 of the flow path 20 sandwiching the intervening location of the second check valve mechanism V2, and the internal flow path 22 is a space for catching the ball 8.

First and second check valve mechanisms V1, V2
The flow path 20 and the first chamber C1 located between
Grid members 31 and 32 are provided across the flow path 20 at communication points M1 and N1 with the second chamber C2. The lattice member 31 at the communication point M1 prevents the ball 8 from entering the first check valve mechanism V1 through the flow path 20 and moves the ball 8 into the internal flow path 21 of the first chamber C1.
To guide. Similarly, the grid member 32 at the communication point N1 is
The ball 8 is prevented from entering the second check valve mechanism V2 side through the flow path 20 and the ball 8 is moved to the second chamber C.
2 to the internal flow path 21. Other communication points M2, N2
Lattice members 41, 42 are provided across the internal flow paths 21, 22 of the first and second chambers C1, C2. The ball 8 of the grid member 41 at the communication point M2 is the first.
The entry into the flow path 20 from the internal flow path 21 of the chamber C1 is prevented. Similarly, the lattice member 42 at the communication point N2 prevents the ball 8 from entering the flow path 20 from the internal flow path 22 of the second chamber C2.

FIG. 2 is an explanatory view showing in principle the second embodiment of the present invention. In this embodiment, the flow path between the pipes of the heat transfer tubes of the heat exchanger 1 and the pipe sheet is included in the flow path 20.
Further, projections 51 and 52 are provided in the internal flow paths 21 and 22 of the first chamber C1 and the second chamber C2,
The flow is disturbed by the projections 51 and 52.

In the second embodiment shown in FIG. 2, when the fluid flows in the flow direction regulated by the first check valve mechanism V1, the fluid does not pass through the second check valve mechanism V2 and passes through the second chamber. It flows bypassing the internal flow path 22 of C2 (solid arrow a ′). For this reason, after the ball 8 trapped in the second chamber C2 is swept away by the fluid as indicated by the solid arrow a and exits the second chamber C2, the flow path 20
Through the internal passage of the heat exchanger 1 (the passage of the heat transfer tube or the passage between the tube plates) to remove scale and the like. The ball 8 that has exited the internal flow path of the heat exchanger 1 passes through the flow path 20 together with the fluid, is guided by the lattice member 31 to the internal flow path 21 side of the first chamber C1, and
And the internal flow path 21 of the first chamber C1.
The fluid that has not flowed in flows through the lattice member 31 and passes through the first check valve mechanism V1. Therefore, even if the internal flow path 21 of the first chamber C1 is clogged with the ball 8, the fluid is not obstructed by the ball 8.

Next, when the fluid flows in the flow direction regulated by the second check valve mechanism V2, the fluid flows into the first check valve mechanism V2.
1 and bypasses the internal flow path 21 of the first chamber C1 and flows (dashed white arrow b '). For this reason, after the ball 8 trapped in the first chamber C1 is swept away by the fluid as indicated by the dashed arrow b and exits the first chamber C1, the ball 8 passes through the flow path 20 and passes through the internal flow path of the heat exchanger 1. Pass through and remove scales. Then, the ball 8 that has exited the internal flow path of the heat exchanger 1 is connected to the flow path 20 together with the fluid.
Is guided by the lattice member 32 toward the internal flow path 22 of the second chamber C2 and captured by the second chamber C2, and the fluid that has not flowed into the internal flow path 22 of the second chamber C2 is Through the second check valve mechanism V2
Flows through. Therefore, even if the internal flow path 22 of the second chamber C2 is clogged with the ball 8, the fluid is
The flow is not obstructed.

The operation of the first embodiment shown in FIG. 1 has already been described, and will not be described here. In the first embodiment, the passage 20 is cleaned by the movement of the ball 8.

It should be noted that the reference numerals attached to the utility model registration claims are provided to facilitate understanding of the contents of the present invention, and are not intended to limit the contents of the present invention.

[0019]

According to the flow path cleaning device using the ball according to the present invention, the ball can be reciprocated in the flow path and continuously cleaned without needing a separate pump. When the normal flow of the fluid flows through the ball (during normal operation), there is an effect that the flow of the fluid is not hindered by the ball.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of the present invention in principle.

FIG. 2 is an explanatory view showing a second embodiment of the present invention in principle.

FIG. 3 is an explanatory view showing a conventional example in principle.

FIG. 4 is an explanatory view showing another conventional example in principle.

[Explanation of symbols]

 8 Ball 20 Flow path 21 Internal flow path of first chamber 22 Internal flow path of second chamber 31, 32, 41, 42 Grid member V1 First check valve mechanism V2 Second check valve mechanism C1 First chamber C2 First 2-chamber M1, M2 flow path and first chamber communication location N1, N2 flow path and second chamber communication location

Claims (1)

(57) [Scope of request for utility model registration] 1. A check valve mechanism (V1, V2) is interposed in each of two places of a flow path (20) in a state where the flow directions of the fluids regulated by the check valves are opposite to each other. , Corresponding to each check valve mechanism (V1, V2)
Two places in the above flow path sandwiching the intervening place of the check valve mechanism (V1, V2)
(M1, M2, N1, N2) and internal flow paths (21, 22) are balls
Each of the chambers (C1, C2) provided as a trapping space of (8) is provided, and the above-described chambers located between the respective check valve mechanisms (V1, V2) interposed at two places of the flow path (20) are provided. A ball is placed at the communication point (M1, N1) between the flow path (20) and the chamber (C1, C2).
(8) passes through the flow path (20) and the corresponding check valve mechanism (V1, V
2) The grid members (31, 22) guide the balls (8) into the internal flow paths (21, 22) of the chambers (C1, C2) while preventing them from entering the side.
32) and other communication points (M2, N2)
In addition, the ball (8) is placed in the internal flow path (21, 2) of the chamber (C1, C2).
2) A flow path cleaning device using a ball, which is provided with lattice members (41, 42) for preventing the flow path from entering the flow path (20).