JPH0223594Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a capping device for various types of tanks, such as those for food, cosmetics, etc., which consist of a tank body and a lid.

(Prior art and its problems) Conventionally, in order to tighten the lid of a tank consisting of a main body and a lid, a hole is drilled in the flange of the main body and a flange of the lid so that both flanges are aligned, and both The main body and the lid were fastened together by passing bolts or the like through the holes and tightening them with nuts or the like.
However, with this method, the lid, which is often heavy, must be positioned so that the holes in its flange match the holes in the flange of the main body, and then tightened using bolts and nuts. Positioning has become a dangerous task that requires a great deal of effort.

In order to solve this problem, a device was proposed for fastening the tank body and lid without using bolts and nuts (Japanese Utility Model Publication No. 11511/1983 and Japanese Utility Model Publication No. 57/1983).
-11512). This device includes a mounting bracket with an oblique mounting groove formed between the lower surface of the flange of a cylindrical tank and the tank body, and a mounting shaft of an inward U-shaped tightening fitting is engaged in the mounting groove. By aligning them, the relative position with respect to the lid does not change, and the tightening seats of the screws of the fastening fittings are tightened to fix the main body and the lid to each other.
However, in this device, both the tightening seat and the top surface of the lid body are smooth, so when the pressure in the tank is high and used for a long period of time, an upward force is applied to the tightening fitting, causing the tightening fitting to move in the vertical direction. There is a danger that the main shaft will bend outward and be deformed, causing the tightening seat to slide on the top surface of the lid and move toward the periphery of the lid and come off the lid, or that the main shaft will break. When this kind of situation occurs, the pressure inside the tank is usually high, so the heavy tank lid will fly upwards, and the fluid inside will scatter, causing injury to the worker. may be in danger.

(Purpose of the invention) The present invention is a tank lid that improves the conventional tank lid tightening structure to prevent slippage between the main body and the lid, thereby reliably avoiding the dangers described above. The purpose is to provide a fastening device.

(Means for Solving the Problems) The present invention provides an outward-facing flange integrally connected to the upper end of a cylindrical tank body, and a lid body having an outer diameter equal to the flange of the tank on the flange of the tank. is placed, and the lower piece of the U-shaped tightening fitting facing inward is brought into contact with the lower surface of the flange of the tank, and the lower part of the screw rod passing through the upper piece is brought into contact with the lid body and tightened. In the lid tightening device for tanks, a required number of lid recesses are formed on the upper surface of the lid, and screw rod recesses corresponding to the lid recesses are formed on the lower surfaces of the same number of screw rods as the lid recesses. This device is a lid tightening device for tanks, in which a hard spherical body is housed in the space formed between both recesses to prevent the tightening fittings from sliding in the lateral direction. By forming recesses on both the upper surface of the lid body and the lower surface of the threaded rod, housing a hard spherical body in the space forming both the recesses, and engaging the spherical body with the both recesses, the lid body The relative horizontal position of the screw and the screw rod should not change, so that the main shaft of the fastening fitting does not bend or the tank lid comes off even if used as a fastening fitting for a high-pressure tank for a long period of time. The point is that there is no such thing.

The present invention will be explained in detail below.

The tank in the present invention can be any type of tank, including but not limited to, food, cosmetics, etc. The tank can be used for food, cosmetics, or any other type of tank. It is preferable to use it in a high-pressure tank where a huge force is applied.

The fastening fitting to be used has a U-shape facing inward (toward the tank), and its lower piece abuts the lower surface of the outward flange of the tank body, and the lower surface of the threaded rod passing through the upper piece faces outward of the lid body. By pressing onto the flange, the main body and the lid are fixed to each other. The cross-sectional shape of the fastening fitting is preferably thin in order to reduce weight, but it may of course be solid.

Further, the tightening fitting may be attached to the tank body using a mounting bracket as in the case of the prior art described above, but if such a structure is adopted, the position of the mounting bracket and the recess of the lid body may be It is preferable not to attach it to the main body as in the case of the embodiment described later, since it is time-consuming to adjust the position of the tightening fitting when attaching it.

To fix the outward flange of the lid body and the screw rod to each other, for example, V-shaped recesses are cut at corresponding locations on the upper surface of the outward flange of the lid body and the lower surface of the screw rod, and a groove is formed between the two recesses. A spherical body such as a metal ball that is hard and does not deform is accommodated in each of the recesses so as to be engaged with each of the two recesses. Note that instead of forming a plurality of V-shaped recesses, a single annular groove may be formed and the spherical body may be engaged with this. As a result, although the outward flange and the screw rod do not come into contact depending on their structure, they are fixed to each other with the ball, and therefore the outward flange and the screw rod are also fixed to each other, and the screw rod moves on the outward flange. No more slipping or falling off.

Hereinafter, the present invention will be explained in more detail based on an embodiment shown in the accompanying drawings, but the present invention is not limited to this embodiment.

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a vertical sectional side view taken along the line -- in FIG.

A slightly thick, doughnut-shaped outward facing flange 2 is integrally connected to the upper end of the cylindrical tank body 1, and an annular groove 4 in which an O-ring 3 for sealing is accommodated is formed on the upper surface of the flange 2. is cut out. The upper surface of the outward flange 2 is provided with an upwardly curved portion 5 in the center, and the outward flange 7 of the lid body 6 is
The outer flange 7 is placed such that its peripheral edge coincides with the outer edge of the outward flange 2 of the tank, and a plurality of lids each having a V-shaped cross section are disposed at predetermined positions in the circumferential direction on the upper surface of the outward flange 7. A body recess 8 is cut out.

The lower piece 10 of the thin-walled fastening fitting 12, which has a substantially U-shape and is comprised of an upper piece 9, a lower piece 10, and a main shaft 11 connecting the bases of both pieces 9, 10, is connected to the outward flange of the main body 1. 2, and the main shaft 11 is in contact with the outward flange 2 at its lower part.
and are in contact with the respective circumferential side surfaces of the outward flange 7 of the lid body 6. The top piece 9 of the fastening fitting 12 has a swollen tip and a through hole 13 with a thread formed on the inner periphery is bored in the center. A donut-shaped handle 15 is arranged in series, and a threaded rod 17 having a threaded rod recess 16 substantially the same shape as the recess 8 is formed in the center of the lower end face thereof. A spherical body 18 such as a spherical hard metal ball is accommodated in the space formed by both the recesses 8 and 16, and by tightening the entire screw rod 17 downward with the handle 15, the spherical body 18 It is firmly engaged with the recesses 8 and 16. Therefore, the outward flange 7 of the lid body 6 and the screw rod 1
7 are securely fixed to each other, and lateral slippage does not occur and the screw rod 17 does not come off from the lid 6.

In this embodiment, the fastening metal fittings are not attached to the main body using the above-mentioned mounting bracket or the like, so for example, when the fastening metal fittings 12 are removed and the tank is transported, the fastening metal fittings 12 and the tank body 1 may collide with each other. No sound is generated and the main body 1 is not damaged.

In addition, on the lower surface of the outward flange 2 of the main body 1,
A V-shaped notch 19 is formed, and by engaging the protrusion of the lower piece 10 of the fastening fitting 12 with the notch 19, the two are more securely fastened.

(Effects of the invention) The present invention forms a required number of lid recesses on the upper surface of the lid, and forms corresponding screw rod recesses on the lower surfaces of the same number of screw rods as the lid recesses, so that both recesses A hard spherical body is housed in the space formed between the two to prevent the fastening fitting from sliding in the lateral direction. Therefore, even if high pressure fluid is contained in the tank and high pressure is applied to the lid, the screw of the tightening fitting will not slip on the outward flange of the lid or come off from the outward flange. Even when a heavy lid is used, there are no accidents such as the lid flying up or the fluid scattering, making it easier to ensure work safety.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a vertical sectional side view taken along the line -- in FIG. 1...Main body, 2...Outward flange, 3...O
Ring, 4... Annular groove, 5... Curved portion, 6... Lid, 7... Outward flange, 8... Lid recess, 9
...Top piece, 10...Bottom piece, 11...Main shaft, 1
2... Tightening fitting, 13... Through hole, 14... Eye bolt, 15... Handle, 16... Screw rod recess,
17...screw rod, 18...spherical body, 19...notch.

Claims (1)

[Claims for Utility Model Registration] (1) An outward facing flange is integrally connected to the upper end of a cylindrical tank body, and a lid body having an outer diameter equal to that of the flange of the tank is placed on the flange of the tank. The lower part of the U-shaped tightening fitting facing inward is brought into contact with the lower surface of the flange of the tank, and the lower part of the screw rod passing through the upper part is brought into contact with the lid body and tightened. In the lid tightening device for tanks, a required number of lid recesses are formed on the upper surface of the lid, and lid recesses corresponding to the lid recesses are formed on the lower surfaces of the same number of screw rods as the lid recesses, A lid tightening device for a tank or the like, in which a hard spherical body is accommodated in a space formed between both recesses to prevent the tightening fitting from sliding in the lateral direction. (2) The lid tightening device according to claim 1, wherein the spherical body is made of metal. (3) The lid fastener according to claim 1 of the utility model registration claim, in which the distance between the axis of the screw rod and the inner surface of the main shaft of the fastening fitting is equal to the distance between the lid recess and the periphery of the lid. Device.