KR101935211B1 - Pneumatic conveyor with dome type inlet valve with automatic lubrication function - Google Patents

Abstract

The present invention relates to a pneumatic conveyor with a dome type inlet valve with an automatic lubrication function, more specifically, which comprises a sealing container, a gate housing, a packing member, a dome type inlet valve, and a hopper. Therefore, abrasion of the packing member is reduced to be minimized, and further, a driving force of an actuator to drive the dome type inlet valve can be significantly reduced.

Description

Technical Field [0001] The present invention relates to a pneumatic conveyor with a dome type inlet valve having an automatic lubrication function,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic conveyor having a dome type inlet valve having an automatic lubrication function, and more particularly, to a pneumatic conveyor having a narrow or swirling installation space or a pneumatic conveyor, A plurality of lubricant oil inlets communicated with the lubricant oil inlet, and a plurality of lubricant oil discharge grooves radially connected to the lubricant oil transfer grooves are formed in the flange provided in the packing member, It is possible to automatically supply lubricating oil to the outer surface of the packing member provided between the upper flange formed around the inlet of the inlet of the gate housing and the flange of the hopper in the installed form, A further compressed air supply pipe is installed Type inlet valve is smoothly opened and closed by the lubrication action of the lubricating oil flowing between the outer surface of the curved portion of the inlet valve and the contact surface of the packing member and the frictional contact generated between the outer surface of the curved portion of the dome- In addition, it is possible to reduce the driving force of the actuator driving the dome type inlet valve to a minimum, and in particular, to open the dome type inlet valve, to feed the article to the closed container side and then to supply the compressed air to the dome type inlet valve Thereby preventing airtightness between the curved portion of the dome type inlet valve and the contact portion of the packing member and preventing the wear of the packing member. As a result, the gap formed by the wear and breakage of the packing member can be prevented. It is possible to prevent the compressed air used for conveying the conveyed matter from leaking. Therefore, it is possible not only to prevent the odor and the discharged material from flowing out to the upper part of the pneumatic conveyor, but also to increase the maintenance cost due to the frequent replacement of the packing member and to reduce the work loss due to the work stoppage, The present invention relates to a pneumatic conveyor having a dome type intake valve having an automatic lubrication function, which can be completely transferred 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.

A packing member 3 is fixed to the inside of the upper flange 22 of the gate housing 2 and the lower flange 51 of the hopper 5 in the form of a washer When the dome-type inlet valve 4 is closed, the outer surface of the packing member 3 is closed by the outer surface of the dome-shaped body 41 of the dome-type inlet valve 4 That is, a part of the outer surface of the curved portion so as to maintain a sealing force therebetween.

Therefore, when the packing member 3 is installed through the washer-shaped packing member fixing plate 31 on the conveyed-material inlet 21 formed in the upper portion of the housing 2 (that is, the packing member 3 is not worn A state in which the packing member 3 is inserted into the body cavity of the housing 2 when the dome type inlet valve 4 is rotated and closed corresponding to the operation of the actuator 45, Since the sealing function is performed between the contact surfaces of the dome-type inlet valve 4, it is possible to prevent a part of the conveyed object put into the hopper 5 from flowing into the housing 2 and the closed container 1, It is possible to prevent odors or the like generated in various articles contained in the inside of the housing 1 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, in most conventional air pressure conveyors, there is no means for reducing the frictional force between the dome type intake valve 4 and the packing member 3, so that the dome type intake valve 4 The upper surface of the dome-shaped body 41 is in continuous surface contact with the outer surface of the packing member 3 (see Fig. 2) when the upper surface of the dome-shaped body 41 is rotated together with the rotary shaft 46 in a clockwise or counter- State.

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 opened and closed, The outer circumferential surface of the dome-shaped body 41, which maintains the surface contact state with the packing member 3 inside the packing member fixing plate 31 having the washer shape, provided on the packing member 3 and the packing member 3, (4), which is made of a metal having low abrasiveness due to high hardness of the material itself due to severe friction, a large amount of abrasion and breakage in the packing member (3) made of rubber or the like having low hardness and high abrasiveness Lt; / RTI >

In addition, in the process of automatically feeding the articles temporarily stored in the hopper 5 into the closed vessel 1 through the gate housing 2 in the state in which the dome type inlet valve 4 is opened, Although the dome-type inlet valve 4 in the open state is stacked on the upper portion of the dome-shaped main body 41, that is, the upper portion of the curved portion, it is often fixed to cumulative contaminants, It is not provided at all.

When the dome-type inlet valve 4 is closed again in a state where a part of the object to be delivered is fixed to the upper part of the curved portion of the dome-shaped body 41 as cumulative contaminants, When a cumulative contaminant is adhered to a part of the curved portion of the dome-shaped body 41 as described above, there is a possibility that a part of the packing member is abraded and damaged by the cumulative contaminants, A gap is formed between the dome type inlet valve 4 and the dome type inlet valve 4 so that the object 21 to be unloaded is not tightly sealed (that is, the airtightness of the packing member is lowered) The power generated by the operation of the actuator 45 is greatly increased, and in particular, the increase in the maintenance cost due to the frequent replacement of the packing member There is, of course, a problem in that the increase in cost due to the suspension of the work during the replacement and the reduction of the conveyance amount of the conveyed object occur.

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)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a pneumatic conveyor having a narrow space or a wobbly installation space, The lubricating oil supply device according to claim 1, further comprising a lubricant oil inlet, a lubricant oil transfer groove connected to the lubricant oil inlet, and a plurality of lubricant oil discharge grooves radially connected from the lubricant oil transfer groove, It is possible to automatically supply lubricant to the outer surface of the packing member provided between the upper flange formed around the inlet of the conveyed object and the flange of the hopper and further to provide a compressed air supply pipe for valve cleaning on the upper side of the gate housing The outer surface of the curved portion of the dome- The dome-type draw-in valve can be opened and closed smoothly by the lubrication action of the lubricating oil flowing into the contact surfaces of the packing member, thereby minimizing the wear of the packing member due to frictional contact generated between the outer surface of the curved portion of the dome- In addition, the driving force of the actuator driving the dome-type inlet valve can be greatly reduced. In particular, after the dome-type inlet valve is opened and the object is put into the closed container, the compressed air is strongly injected onto the upper portion of the curved portion of the dome- So that the airtightness between the curved portion of the dome-type inlet valve and the contact portion of the packing member can be prevented, and the wear of the packing member can be prevented, so that the compressed air used for conveying the object to be conveyed to the gap caused by the wear and breakage of the packing member In addition to being able to prevent leaks, It is possible to prevent leakage to the upper part of the pneumatic conveyor, increase the maintenance cost due to frequent replacement of the packing member, reduce the work loss due to the work stoppage, In particular, it is an object of the present invention to provide an air pressure conveyor equipped with a dome type intake valve having an automatic lubrication function, which can greatly increase the reliability of the pneumatic conveyor itself according to the merchantability, quality and transport efficiency.

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 having the automatic lubrication function of the present invention is provided with a compressed air supply pipe having a predetermined volume and provided with a compressed air control solenoid valve for conveyance on its upper side, A closed container having a top shape having a conveying pipe connected thereto; 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 packing member installed between the upper flange of the gate housing and the lower flange of the hopper while being fixed inside the packing member fixing plate having a washer shape; 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; The gate housing is temporarily detached from the upper part of the washer-shaped packing member fixing plate and is detachably coupled through the flange. When the dome-type inlet valve is opened, A hopper for allowing the hopper to fall through the housing toward the hermetically sealed container; And a controller for controlling driving of the dome-type inlet valve and the compressed air control solenoid valve for conveying, wherein a lateral direction inlet and a longitudinal direction inlet are formed between the inner bottom surface and the flange provided at the lower portion of the hopper, And a lubricating oil discharged through the lubricating oil inlet is connected to the upper surface of the packing member through the lubricating oil inlet so that the lubricating oil is injected through the lubricating oil inlet, And a plurality of lubricant discharge grooves connected to the lubricant oil transfer grooves at predetermined angular intervals are formed between the flange bottom surface and the inner surface of the hopper, And the control unit causes the dome type intake valve The lubricating oil supply solenoid or the pump provided on the lubricating oil supply hose is operated whenever the dome type intake valve is opened or closed a predetermined time interval when the valve is closed or the valve is opened or closed a predetermined number of times to automatically supply the lubricating oil into the lubricating oil inlet .

In this case, the lubricant oil injection holes may be formed in one or two in opposite directions so as to have an angle difference of 180 degrees from each other, or four angles may be formed so as to have an angle difference of 90 degrees with respect to each other.

In addition, the lubricant oil discharge groove may be formed in a radial shape so as to have an angle difference of 90 degrees with respect to each other or to have an angle difference of 6 degrees or 45 degrees with respect to each other.

Further, the lateral injection port of the lubricant injection port is formed such that the entrance side is high and gradually decreases toward the longitudinal direction injection port, and the inclination angle? Is formed to be 5 to 10 degrees.

In addition, a ripple for detachably coupling a lubricating oil supply hose is further provided at an outer end of the lubricating oil inlet through a screw connection.

In addition, a compressed air supply pipe for washing the valve, which is connected to the compressed air supply pipe, is further provided on one side of the gate housing, and on the compressed air supply pipe for valve washing, And a valve is further provided.

At this time, the washing-type compressed air control solenoid valve installed in the compressed air supply pipe for valve cleaning opens the dome-type inlet valve for a predetermined time before closing the dome-type inlet valve, so that the impurities accumulated in the upper- Is automatically removed by the compressed air injected through the compressed air supply pipe for valve washing.

As described above, according to the pneumatic conveyor provided with the dome-type inlet valve having the automatic lubrication function of the present invention, the pneumatic conveyor having the narrow space or the meandering installation space, or the pneumatic conveyor, A plurality of lubricant oil inlets communicated with the lubricant oil inlet, and a plurality of lubricant oil discharge grooves radially connected to the lubricant oil transfer grooves are formed in the flange provided in the packing member, It is possible to automatically supply lubricating oil to the outer surface of the packing member provided between the upper flange formed around the inlet of the inlet of the gate housing and the flange of the hopper in the installed form, Install additional compressed air supply pipe The dome-type inlet valve is smoothly opened and closed by lubricating action of the lubricating oil flowing between the outer surface of the curved portion of the dome-shaped inlet valve and the contact surface of the packing member. Thus, the packing due to the frictional contact occurring between the outer surface of the curved portion of the dome- The driving force of the actuator for driving the dome type intake valve can be greatly reduced, and in particular, the dome type inlet valve is opened, the article is introduced into the closed container side, and then the compressed air is supplied to the bending portion It is possible to prevent the accumulation of contaminants by the strong injection on the upper part of the dome type inlet valve and the sealing part between the bending part of the dome type inlet valve and the contact part of the packing member and the wear of the packing member can be prevented, Prevent leaking of compressed air used to transport water It is possible to prevent the odor and the discharged material from flowing out to the upper portion of the pneumatic conveyor, as well as to increase the maintenance cost due to the frequent replacement of the packing member and to reduce the work loss due to the work stoppage It is possible to completely convey the conveyed object to a desired place, and in particular, the reliability of the pneumatic conveyor itself according to the merchandise quality and the conveyance efficiency of the pneumatic conveyor itself can be greatly increased.

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 a schematic front sectional view of a pneumatic conveyor to which the present invention is applied.
4 is a bottom perspective view of a hopper of an air pressure conveyor to which the present invention is applied.
5 is a bottom view of a hopper of an air pressure conveyor to which the present invention is applied.
6 is a sectional view taken along the line AA in Fig. 5;
FIG. 7 is an enlarged view according to an embodiment of part A of FIG. 6; FIG.
8 is an enlarged view according to another embodiment of part A of Fig. 6;
9 is a sectional view taken along line BB of Fig.
10 is an enlarged view of a portion B in Fig.

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 expressly 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.

3 is a schematic front sectional view of an air pressure conveyor to which the present invention is applied, FIG. 4 is a bottom perspective view of a hopper of an air pressure conveyor to which the present invention is applied, and FIG. 5 is a bottom view of a hopper of an air pressure conveyor to which the present invention is applied FIG. 6 is a cross-sectional view taken along line AA in FIG. 5, FIG. 7 is an enlarged view according to an embodiment of A of FIG. 6, and FIG. 8 is a cross- FIG.

9 is a cross-sectional view taken along the line B-B of Fig. 5, and Fig. 10 is an enlarged view of a portion B of Fig.

According to the present invention,

A compressed air supply pipe 11 provided with a compressed air control solenoid valve 13 for conveying is provided on the upper side and a sealed container 12 having a shape in which a conveyed matter transfer pipe 12 is connected to the lower end thereof. (1); A housing (2) for a gate, which is provided at a top portion with a feed inlet (21) and is detachably coupled to an upper end of the closed container (1); A packing member 3 provided between the upper flange 22 of the gate housing 2 and the lower flange 51 of the hopper 5 while being fixed inside the packing member fixing plate 31 having a washer shape, ; 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, A dome-type inlet valve 4 which is turned clockwise or counterclockwise in correspondence with the operating direction of the conveying object inlet port 21 and opens and closes the object inlet 21; Shaped packing member fixing plate 31 provided on the upper portion of the housing for a gate 2 in a detachable manner through a flange 51 and temporarily receiving a discharged product that is normally supplied from the outside A hopper 5 for dropping the dome-type inlet valve 4 to the closed container 1 side through the gate housing 2 when the dome-type inlet valve 4 is opened; And a control unit (6) for controlling driving of the dome type intake valve (4) and the conveying compressed air control solenoid valve (13)

A plurality of lubricant inlets 521 having a shape in which a transverse direction inlet 521 and a longitudinal direction inlet 522 are continuously formed in a "? &Quot; shape are formed between a side surface of a flange 51 provided at a lower portion of the hopper 5, And a lubricating oil discharged through the lubricating oil inlet 52 is formed inside the bottom surface of the flange 51 of the hopper 5 in such a manner as to connect the longitudinal inlet 522 of the lubricating oil inlet 52 A circular lubricating oil moving groove 53 for moving along the upper surface of the packing member 3 is formed to have a shape of a vertical section of an ∩ shape and a predetermined angle 慮 between the bottom surface and the inner surface of the flange 51 of the hopper 5 A plurality of lubricating oil discharge grooves 54 connected to the lubricating oil moving groove 53 at intervals are formed radially and the control unit 6 causes the control unit 6 to perform a predetermined time interval Or the dome-type inlet valve By operating the lubricating oil supply hose (7) the lubricating oil supplied to the solenoid or pump (8) that are installed on each time when opening and closing as made many times is characterized in that one to give to automatically supply the lubricating oil into the lubricating oil injection port (52).

At this time, the lubricant oil inlets 52 are formed in four or two in the opposite directions or in an angle of 90 degrees with respect to each other so as to have an angle difference of 180 degrees.

The lubricating oil discharge groove 54 is formed in a radial shape so as to have an angle difference of 90 degrees with respect to each other or with six angles or an angle difference of 45 degrees with respect to each other.

The lateral injection port 521 of the lubricant injection port 52 is formed such that the entrance side thereof is high and gradually decreases toward the longitudinal injection port 522. The inclination angle? .

Further, a ripple 9 for detachably connecting the lubricating oil supply hose 7 is further provided at the outer end of the lubricating oil inlet 52 through a screw connection.

In addition, a compressed air supply pipe 14 for valve cleaning connected to the compressed air supply pipe 11 is further provided on one side of the upper portion of the gate housing 2, and on the compressed air supply pipe 14 for cleaning the valve, 6) for controlling the opening and closing operation of the washing-use compressed air control solenoid valve (15).

At this time, the cleaning compressed air control solenoid valve 15 installed in the compressed air supply pipe for valve cleaning 14 is opened by the control unit 6 for a predetermined time before closing the dome type intake valve 4, The dirt accumulated in the upper portion of the dome-shaped main body 41 of the dome-type inlet valve 4 in the state of being automatically removed by the compressed air injected through the valve-washing compressed air supply pipe 14 do.

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

3 to 5, a pneumatic conveyor having a dome-type inlet valve having an automatic lubrication function according to the present invention comprises a closed container 1, a housing 2 for a gate, a packing member 3, A plurality of lubrication oil inlets 52 are formed in a flange 51 provided at the bottom of the hopper 5 among known air pressure conveyors made up of a dome type intake valve 4, a hopper 5 and a control unit 6, And a plurality of lubricant oil discharge grooves 54 radially connected from the lubricant oil transfer groove 53 are formed in the packing member fixed plate 31 having a washer shape, The outer surface of the packing member 3 provided between the upper flange 22 formed around the feed inlet 21 of the gate housing 2 and the flange 51 of the hopper 5 To be supplied with lubricant automatically. And Thoreau.

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 predetermined volume. On the upper side, a compressed air supply pipe 11 having a compressed air control solenoid valve 13 for conveying is provided 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, To be conveyed to the destination along the conveyed-material conveying pipe (12).

The gate housing 2 is provided with an unloaded object inlet 21 at an upper portion thereof and is detachably coupled to the upper end of the closed container 1. The dome-type inlet valve 4 And performs a function of providing space.

The packing member 3 is fixed to the inner side of the packing member fixing plate 31 having the shape of a washer so that the upper flange 22 of the gate housing 2 provided with the conveyed- (Not shown) between the object inlet 21 of the gate housing 2 and the curved surface of the dome-type inlet valve 4, which will be described later, in a state in which it is detachably fixed between the lower flange 51 of the valve body 5 Function.

Most of the inner and upper surfaces of the packing member 3 installed in the form of wrapping the inner outer surface from the center of the packing member fixing plate 31 are formed on the upper surface of the flange 22 formed on the upper portion of the gate housing 2, The upper flange 22 and the lower flange 51 are fixed to each other with the packing member fixing plate 31 interposed therebetween through tightening of bolts and nuts (not shown) The packing member 3 remains fixed to the center of the packing member fixing plate 31 irrespective of the opening / closing operation of the dome-type inlet valve 4.

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.

The control unit 6 also drives all the electric and electronic components provided in the pneumatic conveyor including the actuator 45 for opening and closing the dome type intake valve 4 and the conveying compressed air control solenoid valve 13 As shown in FIG.

 4 to 10, a drill is inserted between the inner bottom surface and the side surface of the flange 51 provided at the lower portion of the hopper 5 to form a transverse inlet 521 A plurality of lubricant oil inlets 52 having a shape in which a longitudinal direction inlet 522 and a longitudinal direction inlet 522 are formed in a continuous loop shape are formed on the inner surface of the flange 51 of the hopper 5, A lubricant oil transfer groove 53 connecting the longitudinal direction injection port 522 and moving the lubricant oil discharged through the lubricant oil inlet 52 along the upper surface of the packing member 3 is formed in a shape of " And a plurality of lubricating oil discharge grooves 54 connected to the lubricating oil moving grooves 53 at a predetermined angular interval are radially formed between the bottom face and the inner side face of the flange 51 of the hopper 5 And A predetermined control program is inputted to the fisher unit 6 to set a predetermined time interval (for example, 30 minutes to 2 hours) or a predetermined number of times (for example, 30 minutes to 2 hours) when the dome-type inlet valve 4 is closed 5 to 10 times), the lubricant supply solenoid or pump 8 provided on the lubricant supply hose 7 is operated so as to automatically supply the lubricant to the lubricant inlet 52 It is the main technical component.

At this time, the lubricant oil inlet 52 may include only one flange 51 provided in the hopper 5, corresponding to the diameter of the packing member fixing plate 31, (That is, the flange 51 provided in the hopper 5 and the packing member fixing plate 31) formed at an angle difference of two in the opposite directions or at an angle difference of 90 degrees from each other The larger the diameter, the more can be formed).

The lubrication oil discharge groove 54 also includes a flange 51 provided in the hopper 5 so that only four of the lubricant oil discharge grooves 54 are formed at an angle of 90 degrees with respect to the diameter of the packing member fixing plate 31 And six or eight radial shapes can be formed with a 120 degree angle difference or a 45 degree angle difference from each other.

As described above, the bottom flange 51 of the hopper 5 is provided with a plurality of lubricant oil injection ports 52, a lubricant oil transfer groove 53 connected to the lubricant oil inlet 52, A plurality of lubricant oil discharge grooves 54 are formed and connected to the control unit 6 by a predetermined time interval when the dome type inlet valve 4 is in a closed state or by a predetermined time interval when the dome type inlet valve 4 is opened / The lubricating oil supplied into the lubricating oil inlet 52 is supplied to the one, two or four lubricating oil injection openings 52 by operating the solenoid or the pump 8 for supplying the lubricating oil, The lubricating oil transfer groove 53 having a tunnel shape in which the bottom opening is blocked by the upper surface of the packing member 3 through the injection port 521 and the longitudinal direction injection port 522, Middle A part of the lubricant oil is widely distributed to the outer surface of the packing member 3 around the lubricant oil discharge groove 54 and a part thereof is closed along the outer surface of the packing member 3 Flows down to the dome-shaped main body 41 side of the dome-type inlet valve 4, and then spreads evenly on the outer surface of the curved portion.

Therefore, lubricating action of the lubricating oil during the opening and closing of the dome type intake valve 4 greatly reduces the frictional force generated between the outer surface of the curved portion of the dome type intake valve 4 and the packing member 3, 4, the abrasion of the packing member 3 can be minimized and the service life of the packing member 3 can be greatly extended. In addition, the driving force of the actuator 45 for driving the dome- Can be greatly reduced.

On the other hand, when the transverse direction injection port 521 of the plurality of lubricant oil injection ports 52 having a shape in which the transverse direction injection port 521 and the longitudinal direction injection port 522 are formed in a " The flow of the lubricant into the transverse inlet 521 of the lubricant inlet 52 corresponding to the operation of the lubricant supply solenoid or the pump 8 with a predetermined viscosity is performed only in the horizontal direction as shown in Figs. There is a possibility that a part of the lubricating oil that is lubricated becomes stagnant when the operation of the lubricant supply solenoid or the pump 8 is stopped.

Accordingly, in the present invention, when the lubricant oil injection port 52 is formed by using a drill, the lateral injection port 521 is formed such that the entrance side is higher and gradually lowered toward the longitudinal direction injection port 522 And the inclination angle? Is set to 5 to 10 degrees so that even if the operation of the solenoid or the pump 8 for the lubricant supply is stopped, the lubricant remaining in the transverse inlet 521 of the lubricant oil inlet 52 The lubricant flows automatically along the bottom surface of the transverse inlet 521 having an inclination angle of 5 to 10 degrees to the upper surface of the packing member 3 through the longitudinal inlet 522 and the lubricant transfer groove 53 .

 In the present invention, as shown in FIG. 6, a ripple 9 is further provided at the outer end of the lubricant oil inlet 52 so as to be detachable via a screw connection, whereby a lubricating oil supply with a solenoid for supplying lubricant or a pump 8 The hose 7 can be detachably coupled through the ripple 9 smoothly.

3, a compressed air supply pipe 14 for valve cleaning connected to the compressed air supply pipe 12 is further provided on one side of the upper portion of the gate housing 2, A cleaning compressed air control solenoid valve 15 is provided on the supply pipe 14 for controlling the opening and closing operation by the control unit 6. [

In addition, the cleaning compressed air control solenoid valve 15 installed in the compressed air supply pipe 14 for cleaning the valve may be opened and closed by the control unit 6 for a predetermined time (for example, For 5 ~ 10 seconds).

Accordingly, the dome-type inlet valve 4 of the pneumatic conveyor is opened in the control unit 6 to transfer the objects stored in the hopper 5 into the closed container 2 through the object inlet 21 of the gate housing 2, (Not shown) for a predetermined period of time before closing the dome-type draw-in valve 4 after the automatic introduction into the dome-type inlet valve 1, the compressed air supplied from the compressed- Type inlet valve 4 is strongly blown to the upper curved portion of the dome-shaped main body 41 of the dome-type inlet valve 4 through the valve-cleaning compressed air supply pipe 14 provided at one side of the upper portion of the housing 2, The debris accumulated in the upper curved portion of the dome-shaped main body 41 of the valve 4 is automatically discharged by the strong compressed air injected from the inner end of the valve-washing compressed air supply pipe 14 having the nozzle shape It is presented.

Therefore, it is possible to prevent airtightness deterioration and wear of the packing member 3 caused by cumulative contaminants between the curved portion of the dome type intake valve 4 and the contact portion of the packing member 3 in advance, and the wear and breakage of the packing member It is possible to prevent the compressed air used for conveying the conveyed object from leaking to a clearance generated due to the leakage of the odor and the conveyed matter to the upper portion of the pneumatic conveyor.

In addition, it is possible to reduce the loss of on-site operation due to the increase of the maintenance cost due to the frequent replacement of the packing member and the work stoppage, as well as to perfectly transport the conveyed material to a desired place. The reliability according to the present invention 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
13: Compressed air control solenoid valve for conveying
14: Compressed air supply pipe for valve cleaning
15: Compressed air control solenoid valve for cleaning
2: housing for gate 21:
22: Flange
3: packing member 31: packing member fixing plate
4: Dome type inlet valve
41: dome type body 42: rod
45: actuator 46:
5: Hopper
51: flange 52: lubricating oil inlet
521: Horizontal direction inlet 522: Vertical direction inlet
53: lubricating oil moving groove 54: lubricating oil discharging groove
6:
7: Lubricating oil supply hose
8: Solenoid or pump for supplying lubricant
9: ripple

Claims (7)

A sealed container having a compressed air supply pipe provided with a compressed air control solenoid valve for conveying at its upper side and connected to a conveying pipe at its lower end; 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 packing member installed between the upper flange of the gate housing and the lower flange of the hopper while being fixed inside the packing member fixing plate having a washer shape; 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; The gate housing is temporarily detached from the upper part of the washer-shaped packing member fixing plate and is detachably coupled through the flange. When the dome-type inlet valve is opened, A hopper for allowing the hopper to fall through the housing toward the hermetically sealed container; And a control unit for controlling driving of the dome type intake valve and the compressed air control solenoid valve for conveying,
Wherein a plurality of lubricant oil inlets are formed between the side surface and the inner bottom surface of the flange provided at the lower portion of the hopper in such a manner that the transverse inlet port and the longitudinal inlet port are formed in a " A circular lubricating oil transfer groove which has a shape connecting the longitudinal direction injection port of the lubricating oil injection port and moves the lubricating oil discharged through the lubricating oil injection port along the upper surface of the packing member, A plurality of lubricating oil discharge grooves are radially formed between the bottom surface and the inner surface at predetermined angular intervals and connected to the lubricant oil transfer grooves, and the control unit allows the control unit to perform a predetermined time interval or a predetermined time interval when the dome- Whenever the valve is opened or closed a predetermined number of times, Characterized in that a lubricating oil supply solenoid or a pump provided on the lubricating oil supply port is operated to automatically supply the lubricating oil into the lubricating oil inlet.
The method according to claim 1,
Wherein the lubricating oil injection ports are formed in four or two in opposite directions so as to have an angle difference of 180 degrees with respect to each other so as to have an angle difference of 90 degrees with each other. .
The method according to claim 1,
Wherein the lubricating oil discharge groove is formed radially so as to have an angle difference of 90 degrees between the lubricating oil discharge grooves or 6 angles with an angle difference of 45 degrees. .
The method according to claim 1,
Characterized in that the transverse direction injection port of the lubricant oil injection port is formed such that the entrance side thereof is high and gradually becomes lower toward the longitudinal direction inlet port and its inclination angle is 5 to 10 degrees. .
The method according to claim 1,
Wherein an outer end of the lubricant oil inlet is further provided with a ripple through which a lubricant supply hose is detachably coupled through a screw connection.
The method according to claim 1,
A compressed air supply pipe for washing the valve connected to the compressed air supply pipe is further provided on one side of the gate housing, and a cleaning compressed air control solenoid valve for controlling the opening and closing operation by the control unit is provided on the compressed air supply pipe for valve washing And a dome-type inlet valve having an automatic lubrication function.
The method of claim 6,
Wherein the cleaning compressed air control solenoid valve for cleaning comprises:
The control unit opens the dome-type inlet valve for a predetermined time before closing the dome-type inlet valve so that the dirt accumulated in the upper portion of the dome-shaped main body of the dome-type inlet valve is automatically removed by the compressed air injected through the valve- And a dome-type inlet valve having an automatic lubrication function.

Images