KR102230565B1 - Safety opening and closing device for the lid of the industrial chemical storage tank - Google Patents

Abstract

The present invention relates to a safety opening and closing apparatus for an industrial chemical storage tank, capable of having a considerably simple structure while being very useful in regard to convenience in the opening and closing of a cover of an industrial chemical storage tank and the prevention of an accident (hand injury) to a user. According to the present invention, the safety opening and closing apparatus includes: a center support shaft (110) having left-handed and right-handed screws formed therein; a spring compression control block (120) assembled with the left-handed screw (111) and the right-handed screw (112); an elastic spring (130) formed on the outside of the spring compression control block; an elastic compression force application block (140) formed on the outside of the elastic spring (130) and including a spring tight-contact part (141) with a free rotation bearing (141a) embedded therein and a pressure protrusion part (141b); a connection part (142) and a one-way bearing inner ring (143) extended more to the rear side of the elastic compression force application block (140); a pressure input block (150) including a pressure groove (151) formed in the rear of the pressure protrusion part (141b); a rotary housing (160) formed on the outer circumference between the front sides of the gap keeping protrusions (152) of the pressure input block (150); a fixed one-way bearing housing (170) fixed to the rear side of the pressure input block (150) and combined with a fixed body connection bar (20) of a body (11); and a one-way tackle bearing (180) formed between the one-way bearing inner ring (143) and the bore of the fixed one-way bearing housing (170).

Description

Safety opening and closing device for the lid of the industrial chemical storage tank}

In the present invention, when the lid of an industrial chemical storage tank is opened, it can be opened at various angles by the elasticity of the built-in spring, and immediately stopped at that position, as well as the lid and body during the opening and closing operation, such as being closed in a safe slow motion when closing. It relates to a safety opening and closing device of the lid of an industrial chemical liquid storage tank that greatly contributes to the prevention of user safety accidents (hand jamming, etc.) as well as liver shock and noise.

Tanks that store a large amount of water or liquid chemical substances used in the industrial field (hereinafter, collectively referred to as "medical solution storage tank") have a tank body manufactured with a certain capacity to freshen a significant amount of chemicals. It is configured, and it is common to install an upper lid that can be opened or closed in response to the need for inspection, cleaning, or replacement of the filter inside the tank.

In addition, the lid installed on the upper part of the chemical liquid storage tank body is made corresponding to the size of the chemical liquid storage tank, so the weight is considerable, but the upper lid is frequently opened for the purpose of checking the inside of the tank, cleaning, or replacing the filter during use. Close opening and closing operation is essential.

In addition, if the opening and closing device between the main body of the chemical storage tank and the upper lid is relying only on feldspar or hinge pin for the opening and closing operation of the upper lid, the user can open the upper lid by hand. Since the weight must be lifted as it is, it is very difficult to open the upper lid. In particular, when the lid is closed, it falls by its own weight and hits the upper surface of the chemical storage tank, which can cause great impact and noise. The risk of fatal and serious safety accidents may occur if the person's hands are caught.

In order to prevent this, in recent years, when designing the opening and closing device of the main body of the chemical storage tank and the lid, there is an example of applying an automatic or semi-automatic opening and closing device that allows the user to open more easily with little force and closes the lid safely and slowly. Most of them.

However, the existing automatic or semi-automatic opening and closing device requires a lot of expensive parts such as unnecessarily complicated configuration or additionally installing a separate automatic driving means such as a hydraulic air cylinder, so the cost and volume of installation are considerable. There were problems such as this required.

For example, Patent Registration No. 10-0796816, known prior to the application of the present application (the cover opening and closing device of the impregnation tank),

"The opening and closing part connected to the tank and the cover covering the upper portion thereof; And the opening and closing part connected to the opening and closing part comprises an operation member that automatically opens and closes the upper part of the tank by rotating the cover by inducing the operation of the opening and closing part during external operation. The tank has a guide bracket having a guide groove on its circumferential surface; the cover has a guide pin formed on the circumferential surface to be inserted into the guide groove of the guide bracket when the upper part of the tank is closed; A support beam extending from a surface; an opening and closing beam having one end connected to the cover to open and close an upper portion of the tank and the other end connected to the operation member; and an opening and closing beam formed around both ends of the opening and closing beam so as to open and close the upper portion of the tank to the support beam. Consisting of a hinge beam that guides the opening/closing beam to seesaw movement around the opening and closing beam according to the operation of the operating member by being hingedly connected, the opening/closing beam is detachably mounted on the upper surface of the cover, and the cover is a connection hole The connecting piece through which the connecting piece is protruded, and the opening and closing beam extends the installation boss through the installation hole; the connecting hole of the connecting piece and the installation hole of the installation boss are detachably connected by inserting a connecting pin together, The operation member is a cylinder that supports one end to the tank so as to be hingeable, and that the other end is hingeably connected to the opening and closing part to be forward and backward."

However, the opening/closing device of the preceding patent document also constitutes an opening/closing part 130 connected between the tank 110 and the cover 120 by a support beam 132, an opening/closing beam 134, and a hinge beam 136, and the port A hinge operation (rotation) is possible between the beam 132 and the hinge beam 136, and then push operation by hydraulic or pneumatic pressure between the rear end of the opening/closing unit 130 and the support shaft 164 at the bottom of one side of the tank. The configuration is very complicated, such as installing a separate cylinder 140, and a problem is also pointed out, such as requiring a considerable size and quantity of parts and installation space.

Patent registration number 10-0796816 (cover opening and closing device of impregnation tank)

Accordingly, in the present invention, the structure of opening and closing the lid of the chemical liquid storage tank is simpler and can be installed in a small space, while realizing the most rational and ideal opening and closing operation with only a pure mechanical device without a power means, and in particular, a spring built-in when the lid is opened. The main focus is to provide a safety opening and closing device for the lid of the industrial chemical storage tank, which is greatly helpful in the prevention of safety accidents and convenience of opening and closing operation, such as instantaneous automatic stop at any rotational angle due to the elastic braking action by means of the elastic braking action, and it closes in a stable slow when closing. It was completed as a technical task.

The present invention for achieving the above technical problem is to install a safety opening and closing device for the lid of an industrial chemical storage tank, the central axis in which the left and right screws are formed; A spring compression adjustment block assembled to the left and right screws; An elastic spring configured at each rear of the spring compression control block; An elastic compressive force applying block configured at the rear of each of the elastic springs and including a spring contacting portion and a pressing protrusion in which a free rotating bearing is embedded; A connecting portion and a one-way bearing inner ring portion further configured to the rear of the elastic compressive force applying block; A pressing force input block configured at the rear of the pressing protrusion and including a pressing groove corresponding to the pressing protrusion and a gap maintaining protrusion formed around the outer edge of the pressing protrusion; A rotary operation type housing configured around an outer periphery between the front surface of the space-maintaining stone piece of the pressing force input block, and in which a fluid lid connection bar of the lid is fixed to the outer surface; A locking groove in the spring compression adjustment block and a rotating locking bar coupled to an inner diameter of the rotating housing; A fixed one-way bearing housing fixed to each rear of the pressing force input block and coupled to a fixed main body connection bar of the main body; It characterized in that it comprises a one-way tackle bearing configured between the inner diameter of the fixed one-way bearing housing and the inner ring portion of the one-way bearing.

The safety opening and closing device of the lid of the industrial chemical storage tank of the present invention as described above is easy and simple to open and close the lid that must be opened and closed from time to time, and it is possible to stop immediately at the angle opened when the lid is opened, and slow down when closed. As a result, it is very useful in preventing safety accidents such as noise or impact caused by bumping between the lid and the body, and the user's hand pinching. In particular, it is possible to install a simpler structure in a small space, thus helping to reduce cost and use space. It is an invention that has a useful effect, such as.

1 is an exemplary view showing an embodiment applied to a chemical storage tank.
Figure 2 is an overall perspective view showing a preferred embodiment of the present invention.
Figure 3 is an exploded perspective view in a transverse cut state for showing the internal structure of the present invention.
Figure 4 is an exploded perspective view in a longitudinal cut state for showing the internal structure of the present invention.
Figure 5 is an exemplary longitudinal sectional view showing the action relationship of the spring compression control block and the elastic spring according to the present invention.
Figure 6 is an exploded perspective view showing an exploded main part of the present invention.

The safety opening and closing device for the lid of the industrial chemical storage tank presented in the present invention will be described in more detail with reference to the accompanying drawings.

In other words, the present invention is installed between the main body 11 and the lid 12 of the chemical liquid storage tank 10 used for industrial use, so that the lid 12 can be safely and conveniently opened or closed, a fixed type coupled to the upper part of the main body. In installing the safety opening and closing device (A) of the lid of the industrial chemical liquid storage tank configured between the main body connection bar 20 and one or more fluid lid connection bars 30 coupled to the lid 12,

A central support shaft 110 having a left screw 111 and a right screw 112 respectively formed on the outer circumference of some of the middle sections and having a constant diameter and length;

A spring compression adjustment block 120 that is coupled to the left screw 111 and the right screw 112 of the center support shaft 110 and moves in opposite directions when rotating, pushing the springs on both sides to compress or release the compression;

An elastic spring 130 assembled at the rear of each of the spring compression control blocks 120 and compressed or decompressed by the left and right flows of the spring compression control block 120;

An elastic compressive force applying block 140 configured to be in close contact with each other at the rear and outer sides of the elastic spring 130 and pushed by the elastic spring 130 to transmit the compressive force to the rear;

The elastic compressive force applying block 140 has a spring contact portion 141 in which a free rotating bearing 141a is built between the inner diameter and the central support shaft 110 and a pressing protrusion 141b protruding from the back side of the spring contact portion 141 And including;

At the rear side of each of the elastic compressive force applying blocks 140, a connection portion 142 extending from the rear of the spring contact portion 141 and a one-way bearing inner ring portion 143 are integrally formed;

A pressing groove 151 is formed behind the pressing protrusion 141b of the elastic compressive force applying block 140 and engaged with the pressing protrusion 141b in a male and female manner, and a gap further protruding to the outside is maintained around the outer circumference of the edge. A pressing force input block 150 in which the yongdol piece 152 is formed;

The pressing force input block 150 is configured in a form surrounding each component around the outer circumference between the front surface of the space-maintaining stone piece 152, and at least one movable lid connection bar 30 coupled to the lid 12 is on the outer surface. A rotating housing 160 that is fixed and rotates at a certain angle according to the rotation of the flowable lid connection bar 30, and is fastened to the pressing force input block 150 by bolts to flow at the same time;

One or more locking grooves 121 are formed in an intaglio around the outer circumference of the spring compression adjustment block 120, and a rotation operation that is coupled to the locking groove 121 in the inner diameter of the rotational housing 160 corresponding thereto The locking bar 161 is coupled;

A fixed one-way bearing housing 170 configured at each rear of the pressing force input block 150 and in a fixed state in which flow is impossible by itself as it is coupled with the fixed main body connection bar 20 of the main body 11;

It is configured between the inner diameter of the fixed one-way bearing housing 170 and the one-way bearing inner ring portion 143 of the elastic compressive force application block 140, and allows rotation in one direction with respect to the one-way bearing inner ring portion 143, but the other one direction It is characterized in that it includes a one-way tackle bearing 180 that limits rotation by a tackle action.

In addition, when a slip type friction plate 190 made of Teflon is further formed between the front surface of the fixed one-way bearing housing 170 and the rear surface of the pressing force input block 150, a certain degree of slip phenomenon is caused while maintaining a constant distance from each other. While preventing instantaneous rapid rotation, it is also very helpful in preventing the user's safety accidents.

Teflon fluorine resin is an engineering plastic widely used in mechanical and electrical fields such as automobile parts because of its excellent heat resistance, electrical insulation, chemical resistance, and abrasion resistance, and the front side of the fixed one-way bearing housing 170 and the pressing force input block 150 If it is configured in close contact between the rear surfaces of ),

In the process of opening and closing the lid 20, when the pressing force input block 150 rotates, the fixed one-way bearing housing 170 and the fixed one-way bearing housing 170 prevent sudden and instantaneous rapid rotation with a flexible and smooth slip property. It is helpful in preventing safety accidents, such as what you can do.

In addition, at one end of the center support shaft 110, if necessary, the center support shaft 110 is rotated with a tool such as a spanner (or wrench) to the left and right screws 111 of the center support shaft 110. It is possible to appropriately adjust the spacing of the two spring compression control blocks 120 coupled to each other, and through this, the spring compression force setting operation unit 113 is further configured to enable the most ideal compression force setting operation of the elastic spring during the opening and closing operation of the lid. can do.

That is, if it is necessary to set the compressive force of the elastic spring to a little weaker or vice versa before opening and closing of the lid, insert a tool (spanner or wrench, etc.) into the spring compressive force setting operation unit 113 and turn it to one side or the other side. As the central support shaft 110 rotates forward and backward, the gap between the two spring compression control blocks 120 is narrowed or widened, so that the compression force of the elastic spring can be appropriately adjusted.

In addition, the pressing protrusion 141b provided in the elastic compressive force applying block 140 may be formed integrally with the spring contact portion 141 on the front side, but considering the difficulty in metal processing, as shown in FIG. 5 It is also possible to design a structure in which the bolted holes are drilled and each is manufactured individually and then bolted to each other.

In addition, since the space-holding protrusion piece 152 on one side and the space-holding protrusion piece 152 on the other side, and the rotational housing 160 therebetween are configured to be coupled to each other, During rotation, the pressing force input block 150 including the gap-maintaining protrusion 152 is also rotated at the same time.

To this end, a flange is coupled to the outer side of one end of the rotary housing 160 and then coupled to each other by a fastening method of the spacing maintenance protrusion 152 and a bolt.

Hereinafter, the operation of the safety opening and closing device (A) of the lid of the industrial chemical storage tank as described above will be described in more detail.

First, when the user grabs the handle provided on one side of the lid 20 to open the lid 20 of the industrial chemical liquid storage tank and lifts it, the rotating housing connected to the fluid lid connection bar 30 of the lid 20 ( 160) rotates at a certain angle,

At this time, the rotational engagement bar 161 fixed to the inner diameter of the rotational housing 160 and coupled to the engagement groove 121 of the spring compression adjustment block 120 is a left screw of the center support shaft 110 ( Because it rotates the spring compression adjustment block 120 coupled to the 111) and the right screw 112, respectively, the elastic spring 130 provided at the rear thereof is compressed while moving in both directions by the action of the left screw and the right screw. And

When the elastic spring 130 is compressed in this way, the entire elastic compressive force applying block 140 and the spring contact portion 141 and the pressing protrusion 141b in close contact with the rear surface of the elastic spring 130 are pushed to the rear, thereby pushing the pressing force input block. As the pressing is made while being pinched in the pressing groove 151 of 150,

The pressing force input block 150 including the lid 12 is immediately stopped at its rotated position due to the characteristics of the pressing force applied to the pressing groove 151 and the elastic compression force applying block 140 that rotates only in one direction. Becomes possible.

That is, the elastic compressive force applying block 140 further extends to the rear of the connection portion 142 and the one-way bearing inner ring portion 143 integrally, and between the one-way bearing inner ring portion 143 and the fixed one-way bearing housing 170 Since the one-way tackle bearing 180 that allows rotation in one direction but restricts rotation in the other direction is configured, reverse rotation in the open state of the lid is not possible, and in this state, the pressing protrusion (141b) With the pressing groove 151, the pressing force input block 150 is also stopped as it is in the open state while the reverse rotation is restricted by the pressing action.

When the user opens the lid, it stops at that position. Even if the user's hand is placed between the lid and the body while the lid is inadvertently opened and closed, it does not lead to safety accidents such as finger cutting, as well as noise and shock due to severe bumps between the lid and the body. It means that more safe and convenient opening and closing operation is possible because it is also possible to prevent the occurrence of.

On the other hand, when the lid is closed, if the user grabs the handle of the lid and lowers it with a certain force, the lid, which was limited in the downward flow due to its own weight, is slightly bent down to the user's forced force. At this time, the two springs Contrary to the opening of the lid by the action of the left-hand screw and the right-hand screw, the compression control block 120 narrows the distance to each other, and the compression force of the elastic springs 130 on both sides and the pressure between the pressing protrusion 141b and the pressing groove 151 are resolved. Safe lid closing operation becomes possible.

Eventually, even if the user opens the lid to the desired angle and releases the hand held, it can be stopped immediately at that position, and even in the working process such as replacing the filter inside the tank while it is open as desired, it is never closed arbitrarily, and the user It is possible to open and close the lid in a very safe and convenient way because it is pulled out forcibly by holding the lid and closing it forcibly.

10: chemical storage tank 11: main body
12: lid 20: main body connection bar
30: lid connection bar 110: central axis
111: left screw 112: right screw
120: spring compression adjustment block 121: locking groove
130: elastic spring 140: elastic compressive force applying block
141: spring contact portion 141a; Free rotation bearing
141b: pressure protrusion 142: connection
143: one-way bearing inner ring part 150: pressing force input block
151: pressurization groove 152: spacing maintenance stone piece
160: rotary operation housing 161: rotary operation locking bar
170: fixed one-way bearing housing 180: one-way tackle bearing
190: slip type friction plate A: safety switch

Claims (5)

A fixed main body connection bar (20) installed between the main body (11) and the lid (12) of the chemical liquid storage tank (10) used for industrial purposes and coupled to the upper part of the main body (11) so that the lid (12) can be opened or closed. And, in installing the safety opening and closing device (A) of the lid of the industrial chemical storage tank lid configured between one or more fluid lid connection bars 30 coupled to the lid 12,

A central support shaft 110 having a left screw 111 and a right screw 112 respectively formed on the outer circumference of a part of the center and having a constant diameter and length;
A spring compression adjustment block 120 that is coupled to the left screw 111 and the right screw 112 of the center support shaft 110 and moves in opposite directions when rotating, pushing the springs on both sides to compress or release the compression;
An elastic spring 130 assembled at the rear and outer sides of the spring compression control block 120 and compressed or decompressed by the left and right flows of the spring compression control block 120;
An elastic compressive force applying block 140 configured to be in close contact with each other at the rear and outer sides of the elastic spring 130 and pushed by the elastic spring 130 to transmit the compressive force to the rear;
The elastic compressive force applying block 140 has a spring contact portion 141 in which a free rotating bearing 141a is built between the inner diameter and the central support shaft 110 and a pressing protrusion 141b protruding from the back side of the spring contact portion 141 And including;
At the rear side of each of the elastic compressive force applying blocks 140, a connection portion 142 extending from the rear of the spring contact portion 141 and a one-way bearing inner ring portion 143 are integrally formed;
A pressing groove 151 is formed behind the pressing protrusion 141b of the elastic compressive force applying block 140 and engaged with the pressing protrusion 141b in a male and female manner, and a gap further protruding to the outside is maintained around the outer edge. A pressing force input block 150 in which the yongdol piece 152 is formed;
The pressing force input block 150 is configured in a form surrounding each component around the outer circumference between the front surface of the space-maintaining stone piece 152, and at least one movable lid connection bar 30 coupled to the lid 12 is on the outer surface. A rotation-operated housing 160 that is fixed and rotated at a certain angle according to the rotation of the floating lid connection bar 30;
One or more locking grooves 121 are formed in an intaglio around the outer circumference of the spring compression control block 120, and a rotation operation that is coupled to the locking groove 121 in the inner diameter of the rotational housing 160 corresponding thereto The locking bar 161 is fixedly coupled;
A fixed one-way bearing housing 170 configured at each rear of the pressing force input block 150 and in a fixed state in which flow is impossible by itself as it is coupled with the fixed main body connection bar 20 of the main body 11;
It is configured between the inner diameter of the fixed one-way bearing housing 170 and the one-way bearing inner ring portion 143 of the elastic compressive force application block 140, and allows rotation in one direction with respect to the one-way bearing inner ring portion 143, but the other In one direction, a one-way tackle bearing 180 that limits rotation by a tackle action;
Safety opening and closing device of the lid of the industrial chemical storage tank, characterized in that it comprises a.
The method of claim 1,
Between the front surface of the fixed one-way bearing housing 170 and the rear surface of the pressing force input block 150,
A safety opening and closing device for the lid of an industrial chemical liquid storage tank, characterized in that it further comprises a slip-type friction plate 190 made of Teflon.
The method of claim 1,
At one end of the central axis 110,
A safety opening and closing device for an industrial chemical storage tank lid, characterized in that it can further configure a spring compression force setting operation unit 113 that enables the compression force setting operation of the elastic spring.
The method of claim 1,
The pressing protrusion (141b) provided in the pressing force input block 150,
It is formed integrally with the spring contact portion 141 on the front side, or
Or a safety opening and closing device for the lid of an industrial chemical liquid storage tank, characterized in that each individually manufactured and then fastened with bolts.
The method of claim 1,
An industrial chemical storage tank, characterized in that the one side of the gap-holding protrusion 152 and the other side of the gap-holding protrusion 152 and the rotational housing 160 therebetween are combined with each other to flow simultaneously when rotating. Safety opening and closing device of the lid.

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