JPH09166226A - Eccentric valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eccentric valve excellent in economical efficiency such that adhering matter fixed to a secondary side of the eccentric valve can be surely washed and that equipments of a valve or the like for a wash water line can be easily mounted. SOLUTION: A disk 12 is openably/closably provided by rotating an eccentric shaft 13 provided in a body 11, a seat ring 14 making the disk 12 in adhesion, when a valve is closed, is mounted in the inside of the body 11, and in the vicinity of this seat ring 14 and in a secondary side position of the body 11, a mounting seat 15 of one or a plurality of wash water circulating or purging or instrument mounting pipes or the like is provided. Here, a valve 21 is provided in the mounting seat 15, and an in/out side of the body 11 is communicatably provided, in this condition, for instance, when wash water is supplied from the mounting seat 15 provided in the body 11, adhering matter fixed to a position in the vicinity of the seat ring 14 in a secondary side of the eccentric valve can be surely washed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eccentric valve used for pipes of clean water, sewage, agricultural water, industrial water, etc. containing sand, sludge, and other solid matter.

[0002]

2. Description of the Related Art An eccentric valve of this type is constructed by rotating a disc-shaped valve body, which is provided away from the eccentric shaft, around the eccentric shaft.
When the valve is opened, it is housed outside the straight flow path that corresponds to the seat diameter in the body, and when the valve is closed, it contacts the annular seat ring to close the flow path, and the eccentric structure increases this contact surface pressure to ensure sealing. It is a valve with a structure that mainly
It is used in the line where sewage, treated water, slurry, tap water, etc. flow.

In use of this eccentric valve, solid matter of the fluid is apt to adhere to the secondary side portion of the body, and this adhered matter often interferes with the opening / closing operation of the valve body.
In addition, this adhered matter has also been a cause of clogging in the pipe. In this case, if solid matter remains on the secondary side, spoiled gas such as methane gas and hydrogen sulfide may be generated, and this spoiled gas also causes abnormal pressurization in the pipe.

Therefore, in order to solve these drawbacks, conventionally, as shown in FIG. 5, a line for flowing washing water is provided in the pipe to wash the solid matter adhered thereto. According to the figure, a tap 3 for valve connection is welded and fixed in the middle of the pipe 2 on the secondary side of the eccentric valve 1, and a closing valve 5 is connected to the tap 3 via a nipple 4, and this closing valve The cleaning water supply pipe 6 was connected to the cleaning pipe 5, and the cleaning water was supplied from this pipe 6 to clean the solid matter adhered thereto.

However, according to this conventional example, since the shutoff valve 5 is provided in the middle of the pipe 2, the wash water does not reach the seat surface of the eccentric valve 1. Therefore, the eccentric valve 1
It was difficult to wash the solid matter attached to the secondary side sheet surface, and the washing effect was not sufficient. Further, in the case of this conventional example, since a cleaning line different from the eccentric valve 1 has to be provided, there is a problem in that the cost becomes expensive.

[0006]

Therefore, the present invention was developed in view of the problems of the prior art, and it is possible to reliably clean the adhered matter fixed to the secondary side of the eccentric valve, and further, An object of the present invention is to provide an eccentric valve that is economically advantageous in that devices such as flush water line valves can be easily mounted.

[0007]

In order to achieve the above object, the present invention is an eccentric valve in which a disc is opened and closed by rotation of an eccentric shaft provided in a body, and the disc is crimped when the valve is closed. The seat ring is installed inside the body, and one or more wash water passages, purging pipes, or instrument mounting pipes are provided near the seat ring and at the secondary side of the body. Is an eccentric valve.

In this case, a valve is provided on the above-mentioned mounting seat so that the inside and outside of the body can be communicated with each other, and in this state, when washing water is supplied from the mounting seat provided on the body, the seat ring on the secondary side of the eccentric valve is provided. It is possible to reliably clean the adhered matter that has adhered to the vicinity of the
It can be easily mounted on this mounting seat, and the spoilage gas can be easily exhausted. Furthermore, instruments such as a pressure gauge can be attached to the mounting seat.

[0009]

1 is a partially cutaway perspective view showing an embodiment of an eccentric valve according to the present invention. In the figure, body 1
An eccentric shaft 13 provided at an eccentric position from a disc-shaped disc 12 is rotatably provided in the disc 1. The disc 12 is located outside the straight flow passage corresponding to the seat diameter in the body 11 when the valve is opened. The seat ring 14 is brought into contact with the seat ring 14 to close the flow path when the valve is closed, and the contact surface pressure is increased by the eccentric structure so that the contact is securely performed.

The seat ring 14 has a metal portion 14
The a and the rubber portion 14b are integrally formed by baking or an adhesive, and are screwed to the inner peripheral surface of the secondary side contact portion of the body 11. In addition, a mounting seat 15 such as a pipe for cleaning water passage, purging, or instrument mounting pipe is provided near the seat ring 14 and at the secondary side position of the body 11. Although one mounting seat 15 is provided in this example, the mounting seat 1
It is also possible to provide a plurality of 5 at the secondary side position of the body 11.

In this embodiment, the mounting seat 15 is provided with a female screw 16 and a communication hole 17 continuously provided with the female screw 16 so that the inside and outside of the body 11 can communicate with each other. A male thread 19 provided at one end of the nipple 18 is screwed to the female thread 16 of the mounting seat 15, and a valve 21 such as a ball valve is connected to the male thread 20 at the other end of the nipple 18, and a handle 21
A pipe 22 is connected to the valve 21 having a. As a mounting means of the valve 21 provided on the mounting seat 15, all connecting means such as welding can be used other than screw connection.

Reference numeral 23 is an upper cover which can be removed in a piped state, 24 is a connecting flange on the primary side of the body 11, and 25 is a connecting flange on the secondary side of the body 11.

Next, the operation of the above embodiment will be described.
FIG. 1 shows a state in which the disc 12 is pressed and sealed to the rubber portion 14b of the seat ring 14 by the contact surface pressure due to the eccentric structure. In this case, for example, sludge, sewage or treated water, slurry or tap water, etc. If you close after flushing,
Solid matter tends to adhere to the secondary side of the eccentric valve. If left unattended, the stuck solids may interfere with the opening / closing operation of the eccentric valve, or the stuck solids may generate spoiled gas.

Therefore, when the cleaning water is supplied to the pipe 22 and the valve 21 is opened to discharge the cleaning water into the body 11 of the eccentric valve, the discharge position of the cleaning water is
Since it is provided at the secondary side position of the body 11 and in the vicinity of the seat ring 14, the solid matter fixed to the seat ring 14 and the vicinity thereof is surely washed and discharged together with the solid matter of the secondary pipe. .

In addition, a septic gas such as methane gas or hydrogen sulfide generated by the solid matter adhered to the secondary pipe is opened by opening the valve 21, so that the gas in the secondary pipe is promptly passed through the valve 21. Can be purged to the outside. Further, since instruments such as a pressure gauge can be attached to the attachment seat 15, the measurement inside the secondary side pipe becomes convenient. Further, since the mounting seat 15 is provided at a position near the seat ring 14 of the body 11, the cleaning water line valve 21 can be mounted more easily than in the conventional case, which is advantageous in cost.

[0016]

As is apparent from the above, according to the present invention, the pipe for cleaning water passage or purging or instrument mounting pipe is provided in the vicinity of the seat ring provided on the body and at the secondary side position of the body. Since a mounting seat such as is installed, a valve or instrument etc. can be installed on this mounting seat to easily remove the solid matter remaining on the secondary side of the body with cleaning water, and the gas inside the secondary side piping. Can be purged to the outside, and the flush water line valve and instruments can be easily attached to the eccentric valve itself, which is advantageous in terms of cost, economical, and long. It is possible to obtain an eccentric valve having a high utility value that can be used for a period of time.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of an eccentric valve incorporating a seat ring of the eccentric valve of the present invention.

FIG. 2 is an enlarged sectional view showing a mounting seat portion of the eccentric valve shown in FIG.

3 is a side view showing a state in which an upper cover is removed from the eccentric valve shown in FIG.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a partially cutaway front view showing a conventional example in which a stop valve is provided in a pipe provided in an eccentric valve.

[Explanation of symbols]

 11 Body 12 Disk 13 Eccentric Shaft 14 Seat Ring 14a Metal Part 14b Rubber Part 15 Mounting Seat 16 Female Thread 17 Communication Hole 18 Nipple 19 Male Thread 20 Male Thread 21 Valve 21a Handle 22 Pipe 23 Top Cover 24 Connecting Flange 25 Connecting Flange

Claims (2)

[Claims] 1. In an eccentric valve in which a disc is opened and closed by rotation of an eccentric shaft provided in the body, a seat ring for pressing the disc when the valve is closed is mounted inside the body, and in the vicinity of the seat ring. An eccentric valve characterized in that one or a plurality of mounting seats for cleaning water passage, purging, or instrument mounting pipes are provided at the secondary side position of the body. 2. The eccentric valve according to claim 1, wherein the mounting seat is provided with a valve so that the inside and outside of the body can communicate with each other.