KR20190022426A - A pneumatic conveyor equipped with a dome type intake valve with a frictional force reducing function - Google Patents

Abstract

The present invention relates to a pneumatic conveyor including a dome type intake valve with a friction reducing function, capable of largely improving merchantability and quality of the pneumatic conveyor, and reliability in accordance with transfer efficiency. According to the present invention, a planar surface part is formed on the upper part of a dome type body of the dome type intake valve, the outer surface of the dome type body, which maintains a curved surface shape only when the dome type intake valve is completely closed, mutually comes in contact with the outer surface of a packaging member. Moreover, while the dome type intake valve is opening or closing, the outer surface of the dome type body and the outer surface of the packaging member are separated from each other.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic conveyor equipped with a dome type intake valve having a frictional force reducing function,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air pressure conveyor having a dome type intake valve with a frictional force reducing operation function, and more particularly, to an air pressure conveyor having a narrow or swirling installation space or a pneumatic conveyor When the dome-shaped inlet valve is formed, the upper portion of the dome-shaped body is formed as a flat surface, so that only a part of the outer surface of the dome-shaped body that maintains the curved shape only when the dome-shaped inlet valve is completely closed is in surface contact with the outer surface of the packing member, And a pair of rod ends protruding in a vertical direction from both sides along a horizontal center line of the dome-shaped body further extending obliquely to either side of the dome-shaped body so that the dome- And further formed eccentrically to one side of the centerline of the dome-shaped body, The outer surface of the edge of the dome-shaped body which maintains a curved shape only when the inlet valve is completely closed is in surface contact with the outer surface of the packing member so that the airtightness is maintained, and in response to the operation of the actuator, The rotation of the packing member in a state in which the flat portion including the curved surface portion of the dome-shaped body is spaced apart from the outer surface of the packing member without any surface contact until after the moment when the packing member rotates counterclockwise or immediately before closing, It is possible to prevent the odor generated from the various discharged materials in the closed container due to the gap generated between the packing member and the dome type intake valve due to the abrasion or breakage to the outside and to increase the power of the actuator, The rise in maintenance costs caused by frequent replacement of members Ron relates to a pneumatic conveyor having a dome-shaped inlet valves of the friction reducing operating functions of the invention to completely prevent problems such as cost increase and blood feed water feed amount decreases due to the operation stop of the replacement.

In other words, according to the present invention, a planar portion is formed on an upper portion of a dome-shaped body of a dome-type intake valve provided in an air-pressure conveyor, and a pair of rod ends protruding from both sides of the dome- And the rotation of the dome-type inlet valve itself is eccentrically rotated. Thus, wear of the packing member due to frictional contact generated between the outer surface of the curved portion of the dome-type inlet valve and the packing member can be minimized and the actuator for driving the dome- It is possible to greatly reduce the driving force of the packing member and to prevent the compressed air used for conveying the conveyed object from leaking through a gap generated due to wear and breakage of the packing member and to allow the odor and the conveyed matter to flow out to the upper portion of the pneumatic conveyor Maintenance cost due to frequent replacement of the packing member. And more particularly to a pneumatic conveyor having a dome type draw-in valve with a frictional force reducing operation function, which can reduce the on-site work loss due to the rise and stop of work and can transfer the conveyed object to a desired place.

Generally, a belt conveyor or a screw conveyor is mainly used in the process of conveying a sludge, a dirt, or the like generated in a sewage treatment plant or a waste disposal plant.

However, these conveyors are not only difficult to install in a narrow space, but also can not be installed in a winding path, so the installation space is limited.

In addition, when the upper conveyors are open type, there is a problem that the sludge is separated from the upper conveyors and the work site becomes dirty.

Therefore, pneumatic conveyors are installed in workplaces where there is a narrow or winding installation space or where cleanliness must be maintained.

1 to 3, the pneumatic conveyer includes a hermetically sealed container 1, a gate housing 2 is coupled to the upper end of the hermetically sealed container 1, And a hopper 5 into which the material to be conveyed is fed is connected to the upper end.

A dome-type inlet valve 4 having a dome shape is provided in the gate housing 2. When the dome-type inlet valve 4 is opened, the object to be fed into the hopper 5 flows into the gate housing 2 The object to be dispensed into the hopper 5 can not fall into the gate housing 2 when the object is dropped into the interior space of the hermetically sealed container 1 and closed.

The dome-type draw-in valve 4 is opened and closed while rotating the actuator 45 such as a pneumatic cylinder. The compressed air supply pipe 11 is connected to the side of the closed container 1, When the compressed air is supplied to the compressed air supply pipe 11, the conveyed material in the closed container 1 is conveyed to the destination along the conveyed material conveying pipe 12 while being pushed by the compressed air.

Further, a packing member 3 having a ring shape for maintaining a sealing force when the dome-type inlet valve 4 is closed is further provided on the contact surface of the conveyed matter inlet 21 formed on the upper portion of the housing 2 of the pneumatic conveyor .

Therefore, in the initial stage in which the packing member 3 is provided in the conveyed object inlet port 21 formed in the upper portion of the housing 2 (that is, in a state in which the packing member 3 is not worn), the operation corresponds to the operation of the actuator 45 When the dome-type inlet valve 4 is rotated and closed, the packing member 3 is sealed between the contact surface of the dummy inlet valve 4 and the conveyed-material inlet 21 formed on the upper portion of the housing 2, It is possible to prevent a part of the object to be fed into the hopper 5 from being introduced into the housing 2 and the closed container 1, Can be prevented from flowing out to the outside through the space between the feed inlet 21 of the housing 2 and the dome-type inlet valve 4.

However, most of the conventional dome type intake valves 4 have a pair of rods 42 integrally extending from both sides of the dome-shaped main body 41 in the vertical direction to which the rotary shaft 46 is coupled , When the dome type intake valve 4 is rotated together with the rotary shaft 46 in a clockwise or counterclockwise direction and is closed or opened corresponding to the operation of the actuator 45, the upper surface of the dome- So as to rotate in a state of continuous surface contact with the outer surface of the packing member 3.

When the pneumatic conveyor with the dome-type inlet valve 4 having the above-described structure is driven for a long time, that is, when the dome-type inlet valve 4 is repeatedly rotated, the conveyed matter inlet 21 of the housing 2, The outer circumferential surface of the dome-shaped body 41 maintaining the surface contact state with the packing member 3 provided on the outer circumferential surface of the packing member 3 forms a circular trajectory, and consequently extremely severe friction with the packing member 3 occurs, The dome-type inlet valve 4 made of a metal having a low abrasiveness is high and the packing member 3 having a low hardness and high abrasiveness is made of a material such as rubber, so that the packing member 3 and the dome- A gap is formed between the conveyed object 4 and the conveyed object input port 21 is not properly sealed so that the odor generated in various conveyed materials injected into the closed container 1 is leaked to the outside, And to this force, according to the operation of the 45 significantly increases, in particular increases as well as problems such as cost increase and the blood feed water feed amount decreases due to the operation stop of the substitution occurs in the maintenance cost due to frequent replacement of the packing member.

Korean Patent Registration No. 10-1671849 (October 27, 2016) Korean Patent Registration No. 10-0823999 (April 15, 2008) Korean Registered Utility Model Publication No. 20-0432619 (November 29, 2006) Korean Registered Utility Model No. 20-0256101 (November 20, 2001)

The present invention has been made in order to solve the above problems of the related art, and it is an object of the present invention to provide a dome-type inlet valve provided in a pneumatic conveyor which is widely used in a workplace having a small or winding installation space or keeping cleanliness , The upper part of the dome-shaped body is formed as a flat surface so that only a part of the outer surface of the dome-shaped body which maintains the curved shape only when the dome-shaped intake valve is completely closed is in surface contact with the outer surface of the packing member, A pair of rod ends protruding in the vertical direction from both sides along a horizontal center line of the dome-shaped body, and a tapered extension part integrally formed at one side of the pair of rod ends, So as to be eccentrically formed at a predetermined angle from the center line of the dome And the dome-shaped body having a curved surface shape is brought into surface contact with the outer surface of the packing member so that the airtightness is maintained, and when the dome-shaped inlet valve is rotated clockwise Or counterclockwise rotation of the packing member, the rotation of the flat portion including the curved surface portion of the dome-shaped body without any surface contact with the outer surface of the packing member is completely prevented until after the moment of opening or immediately before closing, thereby completely preventing wear or damage of the packing member The problem that the odor generated in various articles to be introduced into the sealed container due to the gap generated between the packing member and the contact surface between the packing member and the dome type inlet valve due to abrasion or breakage of the packing member flows out to the outside, Rising problems and frequent replacement of packing members It is possible to completely prevent problems such as increase in cost due to stoppage of work during replacement and lowering of conveyance amount of conveyed material and in particular to reduce the frictional force which can greatly increase the reliability according to the product quality, The present invention provides an air pressure conveyor having a dome type intake valve.

That is, according to the present invention, a planar portion is formed on an upper portion of a dome-shaped body of a dome-type intake valve provided in an air-pressure conveyor, and a pair of rod ends protruding from both sides of the dome- The rotation of the dome-type inlet valve itself is eccentrically rotated, whereby wear of the packing member due to friction between the outer surface of the dome-shaped inlet valve and the packing member can be minimized, and the actuator The driving force can be greatly reduced and the compressed air used for transporting the conveyed object can be prevented from leaking due to the gap generated due to the wear and breakage of the packing member to prevent the odor and the conveyed matter from flowing out to the upper portion of the pneumatic conveyor The maintenance cost is increased due to the frequent replacement of the packing member, and An object of the present invention is to provide a pneumatic conveyor having a dome-type draw-in valve with a frictional force reducing operation function which can reduce the loss of on-site operation due to the stoppage of work, and can completely transfer the object to a desired place.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

In order to accomplish the above object, the pneumatic conveyor having the dome type intake valve according to the present invention has a predetermined volume, a compressed air supply pipe is provided on the upper side, and a conveying pipe is connected to the lower end. A closed container having a top shape; A housing for a gate, which has an inlet for receiving an object to be transferred, and is detachably coupled to an upper end of the sealed container; A ring-shaped packing member which is fixedly installed around a discharge port of the gate housing; A pair of rods integrally extending from both sides of the dome-shaped body along a horizontal center line thereof to which a rotary shaft is coupled is integrally formed and rotates clockwise or counterclockwise in accordance with the operating direction of the actuator in the housing for the gate A dome type inlet valve for opening and closing the feed port; And a hopper which is detachably coupled to an upper portion of the gate housing to temporarily receive a conveyed object to be introduced from the outside and to drop the conveyed object to the hermetically sealed container through the gate housing when the dome- , A planar portion is formed on an upper portion of the dome-shaped body of the dome-type inlet valve, so that the outer surface of the dome-shaped body maintaining a curved shape only when the dome-shaped inlet valve is completely closed is in contact with the outer surface of the packing member, And the outer surface of the dome-shaped body and the outer surface of the packing member are kept spaced apart from each other.

At this time, the flat portion of the dome-shaped main body maintains a shape parallel to the upper surface of the packing member when the dome-shaped inlet valve is completely closed.

In addition, an extension portion inclined at a predetermined angle is integrally formed on either side of a pair of rod bottom end portions provided in the dome-type inlet valve, and a shaft hole to which a rotation shaft of the actuator is coupled is formed at an end portion of the extension portion, And is formed eccentrically to a certain side from a center line of the dome-shaped body by a predetermined angle.

At this time, the eccentric angle of the shaft hole formed in the extended portion is eccentric by 5 to 10 degrees to one side from the center line of the dome-shaped main body.

In addition, the dome-type inlet valve rotates clockwise or counterclockwise together with the rotary shaft at an eccentrically located position corresponding to the operation of the actuator, and during its opening or just before closing, the flat portion including the curved surface portion of the dome- And is rotated in a state in which it is spaced without surface contact.

Further, the shaft hole formed in the extended portion is formed at a position 15 to 20 mm lower than the position of the existing shaft hole formed at the lower end of the rod.

As described above, according to the pneumatic conveyor provided with the dome type intake valve having the frictional force reducing operation function of the present invention, it is possible to provide a pneumatic conveyor having a narrow or swirling installation space or a pneumatic conveyor When the dome-shaped inlet valve is manufactured, the upper portion of the dome-shaped body is formed as a flat portion through partial processing, so that only a part of the outer surface of the dome-shaped body maintaining the curved shape only when the dome- A pair of rod ends protruding in the vertical direction from both sides along the horizontal center line of the dome-shaped main body so that airtightness is maintained, and a tapered extension portion is integrally formed on either side of the pair of rod ends, And the shaft hole itself is formed at one side of the center line of the dome- The outer surface of the edge of the dome-shaped body, which maintains the curved shape only when the dome-shaped inlet valve is completely closed, is in surface contact with the outer surface of the packing member to maintain airtightness, The dome-shaped inlet valve is rotated clockwise or counterclockwise together with the rotating shaft, and the flat portion including the curved surface portion of the dome-shaped body is rotated without being in surface contact with the outer surface of the packing member until the moment when the dome- Therefore, the abrasion or breakage of the packing member can be completely prevented, and the odor generated in the various conveyed products introduced into the closed container due to the gap generated between the packing member and the contact surface of the dome- And the power of the actuator Increase in maintenance cost due to frequent replacement of the packing member, and a problem, of course it is possible to completely prevent problems such as cost increase and blood feed water feed amount decreases due to the operation stop of the substitution.

In other words, according to the present invention, a planar portion is formed on an upper portion of a dome-shaped body of a dome-shaped intake valve provided in an air-pressure conveyor, and a pair of rod ends protruded vertically from both sides of the dome- And the rotation of the dome-type inlet valve itself is eccentrically rotated. Thus, wear of the packing member due to frictional contact generated between the outer surface of the curved portion of the dome-type inlet valve and the packing member can be minimized and the actuator for driving the dome- It is possible to greatly reduce the driving force of the packing member and to prevent the compressed air used for conveying the conveyed object from leaking through a gap generated due to wear and breakage of the packing member and to allow the odor and the conveyed matter to flow out to the upper portion of the pneumatic conveyor Maintenance as well as frequent replacement of packing members Of the pneumatic conveyor. In addition, the pneumatic conveyor itself can greatly improve the reliability of the pneumatic conveyor in accordance with the quality and the transport efficiency of the pneumatic conveyor. It is a very useful invention.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a schematic side cross-sectional view of a conventional air pressure conveyor.
2 is a schematic front sectional view of a conventional air pressure conveyor.
3 is an enlarged sectional front view of the main part for explaining the operating state of the dome type intake valve and the packing member provided in the conventional air pressure conveyor.
4 is a schematic side cross-sectional view of an air pressure conveyor to which one embodiment of the present invention is applied.
5 is a schematic front cross-sectional view of an air pressure conveyor to which an embodiment of the present invention is applied.
FIG. 6 is an enlarged front elevational view of the essential portion for explaining the operation state of the dome-type intake valve and the packing member provided in the pneumatic conveyer to which the embodiment of the present invention is applied.
FIG. 7 is an enlarged front elevational view of an essential portion for explaining an operation state of a dome-type inlet valve and a packing member provided in an air pressure conveyor to which another embodiment of the present invention is applied.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 4 is a schematic side cross-sectional view of an air pressure conveyor to which an embodiment of the present invention is applied, FIG. 5 is a schematic front sectional view of an air pressure conveyor to which an embodiment of the present invention is applied, and FIG. 7 is a cross-sectional view of the dome-type inlet valve and the packing member of the pneumatic conveyor according to another embodiment of the present invention. Sectional view of the main part of the main part for explaining the operation state.

According to the present invention,

A closed container (1) having a predetermined volume and having a compressed air supply pipe (11) installed on an upper side and a conveying pipe (12) connected to a lower end; A gate housing (2) provided with an unloaded material inlet (21) at an upper portion thereof and detachably coupled to an upper end of the closed container (1); A ring-shaped packing member 3 fixedly installed around the object inlet 21 of the gate housing 2; A pair of rods 42 integrally extending from both sides of the dome-shaped main body 41 along the horizontal center line of the dome-shaped main body 41 to which the rotary shaft 46 is coupled in a vertical direction are integrally extended. In the gate housing 2, A dome-type inlet valve 4 rotated clockwise or counterclockwise in accordance with the operating direction of the dispenser 45 to open and close the dispensed material inlet 21; The gate housing 2 is detachably connected to an upper portion of the gate housing 2 to temporarily receive a foreign object to be introduced from the outside and when the dome type inlet valve 4 is opened, And a hopper (5) for allowing the hopper

A planar portion 411 is formed on the dome-shaped main body 41 of the dome-type inlet valve 4 so that the outer surface of the dome-shaped main body 41 maintaining a curved shape only when the dome- The outer surface of the member 3 is mutually surface-contacted and the outer surface of the dome-shaped body 41 and the outer surface of the packing member 3 are kept apart from each other while the dome-type inlet valve 4 is opened or closed. do.

At this time, the flat surface portion 411 of the dome-shaped body 41 maintains a shape parallel to the upper surface of the packing member 3 when the dome-shaped draw-in valve 4 is completely closed.

In addition, in the present invention, the extension portion 43 inclined at a predetermined angle is integrally formed at a lower end of the pair of rods 42 provided on the dome type intake valve 4, and the extension portion 43 A shaft hole 44 to which a rotary shaft 46 of the actuator 45 is coupled is formed at an end of the dome-shaped body 41 so that the shaft hole 44 itself is eccentrically formed at a predetermined angle? .

At this time, the eccentric angle? Of the shaft hole 44 formed in the extended portion 43 is set to be smaller than the eccentric angle?

And is eccentric by 5 to 10 degrees from the center line of the dome-shaped body 41 to one side.

The dome type inlet valve 4 rotates clockwise or counterclockwise together with the rotary shaft 46 in the eccentric position corresponding to the actuation of the actuator 45 and rotates clockwise or counterclockwise until the dome body 41 Is rotated in a state in which the flat surface portion 411 including the curved surface portion of the packing member 3 is spaced from the outer surface of the packing member 3 without surface contact.

In addition, the position of the shaft hole 44 formed in the extending portion 43,

Is formed at a position 15 to 20 mm lower than the position of the existing shaft hole formed at the lower end of the rod (42).

The operation and effect of the air pressure conveyor having the dome type intake valve with the frictional force reducing operation function of the present invention constructed as above will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 4 to 6, the pneumatic conveyor having the dome type intake valve with the frictional force reducing operation function according to the present invention is roughly divided into a hermetically sealed container 1, a housing 2 for a gate, When manufacturing the dome-shaped main body 41 of the dome type intake valve 4 having a conventional hemispherical dome shape among the known pneumatic conveyors composed of the member 3, the dome type intake valve 4 and the hopper 5, And the planar portion 411 is formed in the form of a main technical component.

At this time, among the constituent elements of the air pressure conveyor known in the art, the closed container (1) is a container having a stipulated volume. The upper side surface is provided with a compressed air supply pipe (11) When the compressed air is supplied to the compressed air supply pipe 11, the conveyed object inside the closed container 1 is pushed by the compressed air, (12) to the destination.

The gate housing 2 is detachably coupled to the upper end of the closed container 1 with a feed inlet 21 at the upper portion thereof and the packing member 3 has a ring shape, The gap between the outer surface of the object inlet 21 of the gate housing 2 and the outer surface of the dome-type inlet valve 4 described later is fixed in the closed state around the object inlet 21 of the gate housing 2, .

The dome-type inlet valve 4 basically has a pair of rods 42 integrally extending from the both sides of the dome-shaped main body 41 in the vertical direction to which the rotary shaft 46 is coupled Clockwise or counterclockwise to correspond to the operating direction of the actuator 45 in the gate housing 2 and to open and close the object 21 to be delivered.

That is, when the dome-type inlet valve 4 is opened, the object to be fed into the hopper 5 falls into the inner space of the closed container 1 through the gate housing 2, and when it is closed, And performs an intermittent function to prevent water from falling into the gate housing (2).

When the dome-type inlet valve 4 is opened, the hopper 5 temporarily receives the object to be dispensed from the outside in a state where the hopper 5 is detachably coupled to the upper portion of the gate housing 2, (2) to the closed container (1) side.

Meanwhile, in an embodiment of the present invention, the upper portion of the dome-shaped main body 41 of the dome-type inlet valve 4 among the constituent elements of the air pressure conveyor known in the art may be inserted into the dome- A portion protruding to the upper portion of the object to be charged 21 formed in the gate housing 2 when the valve 4 is closed is processed into the plane portion 411 so that the dome type intake valve 4 is completely closed The outer surface of the dome-shaped body 41 (that is, the outer surface of the curved surface portion) which maintains a curved shape is not in contact with the outer surface of the packing member 3 and the dome- The outer surface of the dome-shaped body 41 and the outer surface of the packing member 3 are kept apart from each other by the flat surface portion 411 during the opening or closing of the actuator 45 corresponding to the driving direction of the actuator 45. [ Element.

At this time, the flat surface portion 411 of the dome-shaped body 41 is protruded to the upper portion of the object to be charged 21 formed in the gate housing 2 when the dome-type inlet valve 4 is closed, Shaped inlet valve 4 is formed in the flat surface portion 411 so as to maintain a shape parallel to the upper surface of the packing member 3 when the dome-type inlet valve 4 is completely closed.

When the dome-shaped inlet valve 4 is completely closed, the flat portion 411 of the dome-shaped body 411 is formed as shown by the solid line in FIG. 6, The outer surface of the dome-shaped main body 41 and the outer surface of the packing member 3 mutually contact each other to maintain airtightness, and the dome-shaped inlet valve 4 is moved in the driving direction of the actuator 45 6, the flat portion 411 including the outer surface of the curved surface portion of the dome-shaped body 41 is kept apart from the outer surface of the packing member 3, so that the dome- Wear or breakage of the packing member 3 which may occur when the valve 4 is opened or closed can be completely prevented.

7, in addition to the configuration in which the planar portion 411 is formed on the upper portion of the dome-shaped body 41, a pair of rods (not shown) provided on the dome- The extension part 43 is formed integrally with the lower end of the extension part 43 in a direction inclined by a predetermined angle in one direction and the shaft part 46 of the actuator 45 is coupled to the end part of the extension part 43 44 is formed so that the shaft hole 44 formed in the extension portion 43 is eccentrically formed at an angle θ in either direction from the center line of the dome- do.

At this time, the eccentric angle? Of the shaft hole 44 formed in the extending portion 43 is formed to be eccentric by 5 to 10 degrees in either one of the vertical and horizontal center lines of the dome-shaped body 41, When the dome-type draw-in valve 4 is closed, the outer surface of the dome-shaped main body 41 of the portion (that is, the curved surface portion) So that the airtightness is maintained in these gaps.

When the dome-type inlet valve 4 is rotated and opened in response to the operation of the actuator 45, the dome-type inlet valve 4 is rotated clockwise or counterclockwise together with the rotary shaft 46 at the eccentric position 7, all of the flat surface portions 411 including the curved surface portion of the dome-shaped body 41 are spaced apart from the outer surface of the packing member 3 without surface contact during rotation or opening up until just before closing, (That is, a mode in which all of the flat surface portions 411 including the curved surface portion of the dome-shaped body 41 are formed in correspondence with the change in the position of the shaft hole 44 eccentrically formed between the outer surfaces of the packing member 3) Eccentrically rotates and operates so as to open the object inlet 21 of the gate housing 2.

The reason why the eccentric angle of the shaft hole 44 formed in the extended portion 43 is eccentric by 5 to 10 degrees in either direction from the center line of the dome type body 41 is that the dome- The dome-type inlet valve 4 itself rotates eccentrically about the eccentric shaft hole 44 when the actuator 4 rotates and opens according to the operation of the actuator 45, The flat portion 411 including one curved surface part descending into the gate housing 2 does not come into contact with the packing member 3 at all and does not have any friction but is lifted up toward the object inlet 21 of the gate housing 2, The curved portion of the other side of the dome-shaped main body 41 of the dome-type inlet valve 4 is connected to the packing member (not shown) by the eccentricity of the shaft hole 44 at the moment when the gate housing 2 comes down from the side of the object- 3) and the outer surface of the there was.

Therefore, the other side of the dome-shaped main body 41 of the dome-type inlet valve 4, which is eccentrically rotated in the form of being lifted up or down from the inlet port 21 of the gate housing 2, (Between the curved portion and the outer surface of the packing member 3) at a suitable angle to rotate smoothly without large friction.

Accordingly, the applicant of the present invention has found that the dome-type inlet valve 4 to which the two embodiments of the present invention are all applied is installed in the gate housing 2 and the opening and closing test is performed for a long period of time. As a result, The eccentric angle of the shaft hole 44 formed in the shaft portion 43 is set within a range of 7 to 8 degrees and the position of the shaft hole 44 is set to the position of the conventional shaft hole formed at the lower end of the rod 42 The dome-type inlet valve 4 is smoothly opened and closed while minimizing the friction between the upper and lower ends of the packing member 3 (for example, ) Friction and breakage of the carbon nanotube.

In the present invention, when the dome-type inlet valve provided in the pneumatic conveyor is manufactured, the upper part of the dome-shaped body is formed as a flat part through partial machining so that only a part of the outer surface of the dome-shaped body, which maintains the curved shape only when the dome- A pair of rod ends protruding in the vertical direction from both sides along the horizontal centerline of the dome-shaped body so as to be in surface contact with the outer surface of the packing member so as to maintain mutual airtightness, The shaft hole is formed eccentrically at a predetermined angle with respect to the center line of the dome-shaped body.

Accordingly, only when the dome-type inlet valve is completely closed, the outer surface of the dome-shaped body that maintains the curved shape is in surface contact with the outer surface of the packing member to maintain the airtightness of each other, and in response to the operation of the actuator, The rotation of the planar portion including the curved surface portion of the dome-shaped main body without being in surface contact with the outer surface of the packing member is performed until the moment of opening or closing the clockwise or counterclockwise rotation, It was completely prevented.

Therefore, there is a problem that the odor generated in various articles to be introduced into the closed container due to the gap generated between the packing member and the contact surface of the dome type inlet valve due to wear or breakage of the packing member is leaked to the outside, It was possible to completely prevent problems such as an increase in the maintenance cost due to frequent replacement of the packing member, an increase in cost due to suspension of the operation during replacement, and a reduction in the conveyance amount of the conveyed object.

In other words, a planar portion is formed on the dome-shaped main body of the dome-type intake valve, and a pair of rod ends protruded vertically from both sides of the dome-shaped main body are formed to be inclined to either side, The driving force of the actuator for driving the dome-type inlet valve can be greatly reduced, and the driving force of the actuator for driving the dome-type inlet valve can be greatly reduced. Further, Also, it is possible to prevent the compressed air used for conveying the conveyed object from leaking due to the gap generated due to the wear and breakage of the packing member, thereby preventing the odor and the conveyed matter from flowing out to the upper portion of the pneumatic conveyor, Of maintenance work due to frequent replacement of parts The conveyance of the pneumatic conveyor itself can be remarkably improved. In particular, the reliability of the pneumatic conveyor according to the product quality and the conveyance efficiency of the pneumatic conveyor itself can be greatly increased. In particular, The reliability according to the transport efficiency can be greatly increased.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Closed container
11: Compressed air supply pipe 12: Feed conveying pipe
2: housing for gate 21:
3: packing member
4: Dome type inlet valve
41: dome type body 411:
42: rod 43: extension part
44: shaft hole 45: actuator
46:
5: Hopper

Claims (6)

A sealed container having a compressed air supply pipe at a side thereof and a conveying pipe connected at a lower end thereof; A housing for a gate, which has an inlet for receiving an object to be transferred, and is detachably coupled to an upper end of the sealed container; A ring-shaped packing member which is fixedly installed around a discharge port of the gate housing; A pair of rods that are coupled to the rotary shaft in the vertical direction at both sides along the horizontal center line of the dome-shaped body are formed, and are rotated clockwise or counterclockwise in correspondence with the operating direction of the actuator inside the gate housing, A dome-type inlet valve for opening and closing the water inlet; And a hopper which is detachably coupled to an upper portion of the gate housing to temporarily receive a conveyed object to be introduced from the outside and to drop the conveyed object to the hermetically sealed container through the gate housing when the dome- ,
The outer surface of the dome-shaped body, which maintains a curved shape only when the dome-shaped inlet valve is completely closed, and the outer surface of the packing member are in contact with each other, and the dome-shaped inlet valve is opened or closed Wherein the outer surface of the dome-shaped main body and the outer surface of the packing member are kept spaced apart from each other during operation of the dome-type inlet valve.
The method according to claim 1,
The flat portion of the dome-
Wherein when the dome-type intake valve is completely closed, the dome-type intake valve maintains a shape parallel to the upper surface of the packing member.
The method according to claim 1,
Wherein an extension part inclined at a predetermined angle is integrally formed on either side of a pair of rod bottom ends of the dome type intake valve,
And a pneumatic conveyor provided with a dome-type inlet valve having a frictional force reducing operation function, wherein the pneumatic conveyor is provided with a shaft hole in which an axis of rotation of the actuator is coupled to an end of the extension portion so that the shaft hole itself is eccentrically formed at a predetermined angle from a center line of the dome- .
The method of claim 3,
The eccentric angle of the shaft hole formed in the extended portion is set so that,
Wherein the dome-shaped main body is eccentrically separated from the center line of the dome-shaped main body by 5 to 10 degrees to either side thereof.
The method of claim 3,
The dome-type inlet valve rotates clockwise or counterclockwise together with the rotation axis at an eccentrically located position corresponding to the operation of the actuator. During the opening or just before closing, the flat portion including the curved surface portion of the dome- Wherein the pneumatic conveyor is rotated in a state in which it is spaced without contact.
The method of claim 3,
The position of the shaft hole formed in the extended portion
And a dome-type inlet valve having a frictional force reducing operation function, wherein the dome-type inlet valve is formed at a position 15 to 20 mm lower than the position of the existing shaft hole formed at the lower end of the rod.

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