JPH04115829U - rotary valve - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the occurrence of powder clogging in a rotary valve that cuts out powder in a feeding device, etc., and to arbitrarily control the amount of powder cut out according to the processing capacity of the feeding device. Allow changes. [Structure] A scratch plate 7 is attached to the tip of a partition plate 5 provided on the rotor 4 to prevent powder from getting caught in it, and a raised plate 8 is attached to the partition plate 5 to reduce the capacity of the compartment 6. to maintain the amount of powder cut out at the optimum value.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can prevent the occurrence of biting of powder, etc., and This invention relates to a rotary valve that allows the amount of water to be changed arbitrarily.

0002

[Conventional technology]

For example, in a powder metering device, when supplying powder, the differential pressure must be shut off. A rotary valve is used to cut out a fixed amount of powder. There is.

0003 However, in conventional rotary valves, the valves are installed radially from the rotor. Coarse powder gets caught in the gap between the partition plate and the valve case, preventing smooth rotation of the rotor. There was a problem in that it could impede the rollover. Also, when the amount of cutting is small, This has been dealt with by making the introduction port smaller, but since the introduction port is small, Depending on the powder, bridging occurs and cutting becomes impossible. Furthermore Since the compartments divided by the partition plates mentioned above have a constant capacity, If the processing capacity of the supply equipment changes, it will have a compartment with a corresponding capacity. It is necessary to replace it with a rotary valve, which requires complicated replacement work. The problem was that it caused loss time.

0004

[Problem that the idea aims to solve]

This invention solves the conventional problems as mentioned above and improves the connection between the partition plate and the valve case. It is possible to reliably prevent powder from getting caught in the rotor and maintain smooth rotation of the rotor. In addition, the capacity of the compartment can be increased without replacing the entire rotary valve device. By arbitrarily changing only the amount, it is possible to accurately and widely correspond to the processing capacity of the supply device. It was completed with the purpose of providing a rotary valve that can .

[0005]

[Means to solve the problem]

The rotary valve of the present invention was developed to solve the above problems. Divided into multiple compartments by partition plates installed radially toward the valve case. In the rotary valve made of Attach a scratch plate to the compartment and close the center side of the compartment to increase capacity. It is characterized by the addition of a raised plate to make it smaller.

[0006]

[Effect]

This type of rotary valve is used in the same way as conventional rotary valves of this type. If the screen is attached to the tip of the partition plate so that it comes into contact with the valve case, The latch plate reliably prevents powder from getting caught, and the partition plate By the raised plate that is installed and closes the center side of the compartment and reduces the capacity. The amount of powder cut out corresponds precisely to the processing capacity of the supply device.

[0007]

【Example】

Next, the present invention will be described in detail with reference to the illustrated embodiments. The drawing shows an example of a rotary valve installed at the bottom of the supply device. An inlet 2 is provided at the top of the lube case 1 to introduce the treated powder from the supply device. , a cutting opening 3 is provided at the bottom for cutting out the powder in fixed quantities into, for example, an air transport pipe. is provided. In addition, a driving source (not shown) is provided in the center of the valve case 1. A rotor 4 is provided which is connected to the rotor 4 and rotates at a predetermined rotation speed. Six partition plates 5 are provided radially protruding toward the valve case 1, and the six partition plates 5 have equal capacities. A compartment 6 is formed.

[0008] At the tip of the partition plate 5, there is a plate that comes into contact with the valve case 1 and closes the gap between the two. A scratch plate 7 is attached. This scratch plate 7 is provided. Depending on the type of powder supplied, for example, it may be necessary to prevent fine powder from getting caught. If so, use rubber, and if heat resistance and abrasion resistance are required, use stainless steel. It can be made to correspond to various conditions.

[0009] In addition, the partition plate 5 is provided with a central part of the compartment 6 to correspond to the processing capacity of the supply device. A raised plate 8 is attached to close the sides and reduce the capacity. Raise this The plate 8 has an L-shaped cross section and a bent part 9, and the bent part 9 is bolted to the partition plate 5. etc. are fastened and fixed. Note that the scratch plate 7 is bent in this manner. When the part 9 is pressed and fixed to the partition plate 5, the fixing work can be completed only once. It is possible to install the raised plate 8 as close as possible to the valve case 1 side. This makes it possible to change the capacity of the compartment 6, and has a sufficient range for adjusting the small capacity. It becomes possible to

0010 With this configuration, the powder supplied by the supply device is rolled from the inlet 2. - Injected into the tally valve and cut out in fixed amounts without being affected by differential pressure (port 3) It is similar to the conventional method in that it is cut out into air transport pipes, etc., but in this invention, A scratch plate 7 is attached to the tip of the partition plate 5 to connect the partition plate 5 and the valve cage. Since the gap between the rotor 4 and the rotor 4 is closed, powder is reliably prevented from being caught This allows smooth rotation to be maintained. In addition, each compartment 6 is equipped with a raised plate 8. The volume is precisely matched to the processing capacity of the supply device, ensuring stable quantitative measurement. In addition to maintaining the quality, this part has a larger diameter inlet port 2 than usual. It is also possible to reliably prevent clogging of the powder.

[0011] Note that the raised plate 8 can be used in the compartment when the processing capacity of the supply device is changed. 6. Another raised structure with length, angle, etc. designed in advance to correspond to the capacity of 6. Easily handled by simply replacing plate 8 or shifting the mounting position to partition plate 5. It is possible to replace the entire rotary valve device as in the past. This eliminates the need for additional work and reduces the complicated work involved, reducing loss time. will not occur.

0012

[Effect of the idea]

As is clear from the above explanation, the present invention allows powder to be removed between the partition plate and the valve case. It is possible to reliably prevent body jamming and maintain smooth rotation of the rotor. At the same time, the capacity of the compartment can be increased without replacing the entire rotary valve system. can be changed arbitrarily to correspond accurately and widely to the processing capacity of the feeding device. It is extremely easy to work with, and it is also a type of rotary valve. In addition to using only a rotary valve, it is a major improvement over the conventional rotary valve. It also has the advantage of being highly economical as it can be used without any problems. Therefore, this invention is a rotary valve that eliminates the problems of the conventional one, and has improved its practicality. The value is extremely large.

[0013]

[Brief explanation of drawings]

FIG. 1 is a cutaway front view showing an embodiment of the present invention.

[Explanation of symbols]

1 Valve case 4 Rotor 5 Partition plate 6 Compartment room 7 Scratch plate 8 Raising board 9 Bent part

Claims (2)

[Scope of utility model registration request] [Claim 1] A plurality of compartments are formed by partition plates (5) provided radially from the rotor (4) to the valve case (1).
(6) In a rotary valve that is divided into two compartments, a scratch plate (7) that comes into contact with the valve case (1) is attached to the tip of the partition plate (5), and the compartment (6)
A rotary valve that is equipped with a raised plate (8) that closes the center side of the valve to reduce its capacity. [Claim 2] The raised plate (8) has a bent portion with an L-shaped cross section.
2. The rotary valve according to claim 1, wherein the scratch plate (7) is pressed and fixed to the partition plate (5) by the bent portion (9).