JPS6255886B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an improvement in a strainer device, and more particularly to a strainer device disposed in a fluid circuit to remove impurities from the fluid.

<Prior Art> A conventional strainer device, particularly a strainer device equipped with a wire mesh washer, is shown in FIG. 7, for example. In the figure, 1 is a shell of the main body of the device, and 2A and 2B are sleeve pipes connected to piping. A cylindrical element 3 made of wire mesh is disposed inside the shell 1, and the fluid flowing in from the sleeve pipe 2A passes through this element 3 to remove impurities, and then flows out from the sleeve pipe 2B. A rotating shaft 4 is disposed inside this element 3, and a scraping device 5 is attached to this rotating shaft 4.
is installed. This scraping device 5 is in sliding contact with the inner circumferential surface of the element 3.
This is to scrape off foreign matter from the (wire mesh) and prevent it from clogging.
more driven.

<Problems to be Solved by the Invention> However, such conventional strainer devices do not have a mechanism to capture the scraped foreign matter, so that the scraped foreign matter may be returned to the element. This has the problem that it tends to adhere to the surface and cause clogging, and as a result, the cleaning effect is reduced.

<Means for Solving the Problems> The present invention provides a piping body interposed in a fluid circuit, and a piping body installed inside the piping body and having a lower portion cut out over a predetermined angle. Defined by a cylindrical wire mesh member, a pair of partition plates that divide the internal space of the wire mesh member into an upper fluid space and a lower fan-shaped space, and the fan-shaped space and an annular space radially outward of the fan-shaped space. a storage section,
A rotatable scraping member that slides on the inner surface of the wire mesh member, and a strainer device that connects the fan-shaped space with the fluid space by moving the partition plate by rotating the scraping member by a predetermined angle.

<Function> In the strainer device according to the present invention, contaminants adhere to the wire mesh member when the fluid passes through the wire mesh member. This foreign material is scraped off from the wire mesh member by rotating the scraping member, and when the scraping member is rotated by a predetermined angle, the partition plate is moved to communicate the fluid space with the fan-shaped space. As a result, foreign matter is collected in the storage section.

<Example> Hereinafter, an example of the strainer device according to the present invention will be described based on the drawings.

1 to 4 show an embodiment of the present invention. First, the configuration will be explained. 11 is a piping body of a strainer device using an existing T-shaped horizontal piping as its casing, and includes a main pipe member 13 having an inlet 12 at one end, and a pipe perpendicular to this main pipe member 13 approximately at the center in the longitudinal direction of the main pipe member 13. A branch pipe portion 14 that branches into
have. A fluid outlet 15 is formed at one end of this branch pipe portion 14 . Also, 16A, 1
6B is a connecting flange fixed to both ends of the main pipe section 13, and 17 is a connecting flange fixed to one end of the branch pipe section 14. In addition, main part 1
A closing plate 18 is bolted to the other end flange 16B of 3.

A cylindrical punch metal 20 is coaxially fixed inside the main pipe section 13, and a predetermined annular space is formed between the punch metal 20 and the inner peripheral surface of the main pipe section 13. has been done. This punch metal 20 is a metal tube having a large number of holes 21 on its wall surface, and a substantially cylindrical wire mesh member 2 on its inner peripheral surface.
2 (approximately 30 meshes) are fixed. As shown in detail in FIG. 2, this wire mesh member 22 has a shape in which its lower portion is notched at a predetermined angle (approximately 90 degrees), and seal plates extending in the longitudinal direction are provided at both ends in the circumferential direction. 23A and 23B are fixed.
That is, the wire mesh member 22 is reinforced and supported by the punched metal 20.

24 is a rotating shaft arranged on the central axis of the wire mesh member 22, and this rotating shaft 24 is connected to the bearing member 25.
It is rotatably supported by A and 25B. Note that the bearing member 25B is supported by the closing plate 18. Further, a handle 26 is fixed to the end of the rotating shaft 24 that protrudes from the closing plate 18.

Here, as shown in FIG. 2, the rotating shaft 24 has a pair of partition plates 31A extending in the axial direction thereof and dividing the internal space of the wire mesh member 22 into an upper fluid space 30A and a lower fan-shaped space 30B. 31B is rotatably attached. These partition plates 31A, 3
1B has fan-shaped side plates 32A, 3 at both ends in the longitudinal direction.
2B, and these side plates 32A and 32B are in sliding contact with each other. In addition, these partition plates 31
A and 31B are urged in the expansion direction by a pair of compression springs 33 provided inside the fan-shaped space 30B, and the pair of seal plates 23
A constant angle is maintained by abutting stoppers 34A and 34B protruding from A and 23B with their radial outer ends. In addition, 35A and 35B are the main part 23
A pair of seal plates are provided on the inner peripheral surface of the main pipe portion 13 at positions corresponding to the stoppers 34A and 34B (radially outward positions thereof), and these seal plates 35A and 35B are provided along the longitudinal direction of this main pipe portion 13. The annular space 36 extending radially outward of the fan-shaped space 30B is partitioned from other spaces. That is, a storage section 37 is defined by the fan-shaped space 30B and the annular space 36, and the storage section 37 is separated in a liquid-tight manner from the internal space of the main pipe portion 13 through which fluid flows.

Here, as shown in FIGS. 1 and 2, a brush 4 is attached to the rotating shaft 24 via holders 38 and 39.
0 is supported. As shown in detail in FIG. 3, the brush 40 is embedded in a support plate 41 over a predetermined length, and guides 42 and 43 protruding from both ends of the support plate 41 are connected to the holders 38 and 39. Each is inserted. Further, a compression spring 45 is compressed in the holder 38, and the brush 40
is biased radially outward with a predetermined force so that it always slides into contact with the inner circumferential surface of the wire mesh member 22. That is, the rotating shaft 24, the brush 40, the compression spring 45, etc. as a whole constitute a scraping member 46 that scrapes off foreign matter adhering to the wire mesh member 22. Further, a striker arm 47 is fixed to both ends of the rotating shaft 24, and the tip of this arm 47 is attached to a stopper 47 fixed to the punch metal 20.
8 so as to be able to come into contact with it. Further, this striker arm 47 is fixed to the rotating shaft 34 at a predetermined angle with respect to the holders 38 and 39 (see FIG. 2), and the brush 40 is attached to the partition plates 31A and 31.
When it comes into contact with B and opens it by a predetermined opening degree, it comes into contact with the stopper 48 and restricts its rotation (the fourth
figure).

In FIG. 1, reference numeral 49 is a curved sealing plate that seals the annular space below the mounting portions of the holders 38 and 39.

Next, the effect will be explained.

As shown by the arrow in FIG.
It flows into A, passes through the wire mesh member 22, and flows out from the annular space through the outlet 15 of the branch pipe 14. At this time, impurities such as scale in the fluid are removed by the wire mesh member 22.
It adheres to etc.

Therefore, in order to prevent clogging of the wire mesh member 22,
For example, the brush 40 is rotated at predetermined intervals to scrape off impurities from the wire mesh member 22. In this case, the fourth
As shown in the figure, when the brush 40 is rotated by a predetermined angle, the brush 40 comes into contact with the partition plate 31A and pushes it open to form a small gap. As a result, the contaminants are transferred to the storage area 37, i.e. from the chain to the hole 21.
It will be collected in the annular space 36 via. Note that the striker arm 47 is connected to the stopper 48.
The opening degree (gap) of the partition plate 31A is always constant so that the partition plate 31A comes into contact with the partition plate 31A. Also, brush 40 in the opposite direction.
When the partition plate 31A is rotated, the spring 33
It is restored to its original state (Fig. 2) by the urging force of
The storage section 37 is separated from the fluid space 30 by the partition plate 31A.
Separated from A.

In this case, since the brush 40 is always urged radially outward with a predetermined force by the spring 45, the tip of the brush 40 always comes into sliding contact with the inner surface of the wire mesh member 22 with a predetermined force, thereby ensuring reliable Contaminants can be scraped off. Note that since the brush 40 is in contact with the punch metal 20 even within the fan-shaped space 30B, it will not fall off from the holders 38, 39.

Furthermore, FIG. 5 shows another embodiment of the present invention. In this embodiment, the strainer device is equipped with a scale pot for storing the contaminants so that the contaminants removed by the strainer device can be extracted without stopping the flow of the internal fluid of the device and piping. It is connected and attached.

In the figure, 51 indicates the main body of the apparatus, and 52 indicates a scale pot. A scale nozzle 53 that opens into the storage portion of the main body 51 is connected to the inside of the scale pot 52 via a valve 54. 55 is a vent valve, and 56 is a drain valve.

Therefore, when fluid is flowing inside the strainer main body 51, the valve 54 is opened and the foreign matter collected in the storage section is automatically transferred to the scale pot 52.
Let it fall inside and collect it. To remove contaminants from the scale pot 52, close the valve 54 and open the vent valve 5.
5 and the drain valve 56 to drain the fluid, remove the flange of the scale pot 52,
Let's do it.

Further, FIG. 6 shows still another embodiment of the present invention. In this embodiment, a straight horizontal pipe 6 for fluid is used.
In the case where the branch pipe 62 has a branch pipe 62 having an angle (θ) (15° to 45°) with respect to the axial direction of the pipe 1, a strainer device is attached. Its structure and operation are similar to the embodiments described above.

In each of the above embodiments, fluid refers to gas and liquid, and contaminants refer to minute amounts of contaminants in the fluid, such as sand, iron rust, and scale.

<Effects> As described above, according to the present invention, the cleaning effect can be improved without causing the foreign matter once scraped off to adhere to the wire mesh member again and cause clogging. Moreover, as a result, the durability of the strainer device itself can be increased.

Furthermore, in each of the above embodiments, since the brush is biased by a spring, the brush can always be properly crimped against the inner surface of the wire mesh, and the brush can be easily rotated despite the deformation of the wire mesh. The overall cleaning effect can be improved. In other words, it is possible to prevent the brush from slipping upward, being unable to rotate, etc. Furthermore, in each of the examples, the storage section is defined by the fan-shaped space inside the wire mesh member and the annular space radiating outward from this fan-shaped space, so that it can be used as the main body without modifying the existing horizontal piping. It has the advantage of being small, lightweight, and does not take up much space. Furthermore, when a scale pot is provided, there is an effect that impurities can be removed without stopping the flow of fluid.

[Brief explanation of the drawing]

FIG. 1 is a horizontal sectional view showing an embodiment of a strainer device according to the present invention, and FIG. 2 is a -
3 is an enlarged view of the main part of FIG. 1, FIG. 4 is a sectional view in the direction of - arrows for explaining the operation, and FIG. 6
The figure is a horizontal sectional view showing still another embodiment, and FIG. 7 is a vertical sectional view showing a conventional device. 11... Piping body, 22... Wire mesh member, 31
A, 31B... Partition plate (opening/closing member), 37... Storage section, 46... Scraping member.

Claims (1)

[Scope of Claims] 1. A piping body interposed in a fluid circuit; a substantially cylindrical wire mesh member attached to the inside of the piping body and having a lower portion cut out over a predetermined angle; a pair of partition plates that divide the internal space of the wire mesh member into an upper fluid space and a lower fan-shaped space; a storage section defined by the fan-shaped space and an annular space radially outward of the fan-shaped space; A strainer device comprising: a rotatable scraping member that slides on the inner surface of a wire mesh member; and by rotating the scraping member by a predetermined angle, a partition plate is moved and a fluid space is communicated with a fan-shaped space. 2 The scraping member includes a rotating shaft provided on the central axis of the wire mesh member, a sliding member supported by the rotating shaft and slidingly contacting the inner surface of the wire mesh member, and a sliding member that biases the sliding member radially outward. A strainer device according to claim 1, comprising an elastic member.