CN2067347U - Throat ferrule - Google Patents

Abstract

The utility model relates to a throat ferrule which is suitable for middle and low pressure to connect a soft pipe with a hard pipe, and the utility model is composed of ferrule sheets, screws, a connecting piece and a force bearing sheet. A worm-worm wheel mechanism which is composed of the screws and the ferrule sheet is installed in a trapezoid space of the connecting piece. The ferrule sheets penetrate through the lower part of the trapezoid space, the right part of the connecting piece is provided with gaps to accommodate screw heads, screw tails contact the force bearing piece which contacts the left side of the connecting piece, and the tail of the ferrule sheet is provided with a hook which hooks a hole positioned at the front end of the tail of the lower bottom of the connecting piece to fit for requirements of quick installation and disassembly. A product has single ferrule type and multiple ferrule type, and the utility model is a generation replacement product.

Description

Throat ferrule

The larynx hoop belongs to pipe joint field in the mechanical engineering, particularly with the cover of additional locking device in order to soft--the connection between the hard tube.

The larynx hoop as a kind of general machinery fit sealing accessory that is flexible coupling, is widely used in industries such as machinery, traffic, irrigation, fire-fighting, air-conditioning.Existing larynx hoop is by screw, hoop sheet and form with the link of the two associated.Screw thread on screw shape " screw rod--the worm gear " mechanism that is meshed with the helical of hoop on the sheet.Yet existing larynx hoop when mounted, the hoop sheet all need be withdrawed from from meshing the position, wastes time and energy; In addition, the manufacturing process of the helical on the larynx hoop adopts milling, has destroyed the continuity of microstructure of metals, causes the spiral metal reduction in strength, and during consequently on-the-spot the installation, helical is cut off by the screw thread of screw, " overflow and detain " phenomenon occurs the larynx hoop is scrapped.

The present invention's purpose is to save the time that the larynx hoop is installed.

The present invention's technology contents is described below: screw (1), hoop sheet (2), link (3), load sheet (4) are to form four kinds of major parts of the present invention, ask for an interview Fig. 1, their quantity is: screw 1-5, and 1-5 of hoop sheet, 1 of link, 1 of load sheet.Link by tinsel for example No. 10 steel discs make, it is the geometrical body of a similar trapezoid shaped, and the afterbody of a prolongation is arranged in its right flank bottom, the afterbody of the prolongation of this afterbody and trapezoidal bottom surface welds with spot welding.On the right flank of link, have 1-5 gap H, so that hold the head of screw after installing.The head of hoop sheet passes the opening of link left surface below and the gap of right flank, and the helical on the hoop sheet is meshed above the inwall of going to the bottom of link with screw thread on the screw.The afterbody of hoop sheet has hook G, and this hook is hooked in link and goes to the bottom in 1-5 the opening K of the end that prolongs afterbody.A load sheet is installed in the chamber of link, the bib that similar three plane of the shape of this part is formed, its cross section is Shape, the Transverse plane driving fit mutually of its right part plane and screw afterbody, the inwall driving fit mutually of the inclination forward position of its former and later two aliform sheets and the left surface of link.Can play in order to guarantee to install back load sheet, two sides at the left surface of link respectively process bluff piece P, and this bluff piece and left surface are perpendicular.The purpose of adding the load sheet is to avoid the stress of link left surface (from screw) to concentrate.

Compare with existing procucts, the present invention has following advantage:

1, easy to use, time saving and energy saving: as all need not to make screw and hoop sheet disengaging engagement owing to adopting the structure of linking up with, installing, dismantle.Make the hoop sheet move a very short distance as long as drive screw during installation, flexible pipe can be locked on the hard tube.Withdraw from one section length of being a bit larger tham hook as long as will bind round sheet during dismounting, hoop sheet and flexible pipe are broken away from, unload the lower larynx hoop.

2, intensity height, use reliable: the helical on the hoop sheet, the employing cold punching technology is made, replaced old milling process, so can not destroy microcosmic steel fiber streamline, cold stamping produces the effect of flow harden in addition, makes that helical intensity greatly improves on the hoop sheet, " the button phenomenon of overflowing when having stopped on-the-spot the installation.Also have, consider from the equal strength angle, the width of hoop sheet only is the 50-60% of old product, thereby under identical coupling mechanism force, has saved steel.

3, simplified technology: with the link example, old product palpus 8 procedures, new product only needs 5 procedures, has saved operations such as curved pawl, die.

4, after the installation, the radial clearance that staggers between hoop sheet internal diameter and link (3) bottom outer wall reduces, and only is about 1/3rd of old product gap, has strengthened sealing effect.

5, dual hooping, many hoops formula product have been increased, to adapt to the demand of different condition of contacts.Pressure, big caliber adopt many hoops formula for example, and the low pressure tubule directly adopts single hooping.Envelope benefit, broken end that many hoops formula also can be used for pipeline connect.

By following routine accompanying drawing, provided five embodiments of the present invention:

Fig. 1 is a structural drawing of the present invention

Fig. 2 is the enforcement illustration of single hooping of the present invention

Fig. 3 is the enforcement illustration of three hoop formulas of the present invention

The embodiment figure principle of dual hooping, four hoop formulas, five hoop formulas is the same, is omitted.

Specification series of the present invention:

Miniature: as to bind round the sheet diameter less than 15mm, (can cancel the load sheet)

Small-sized: hoop sheet diameter 15-25mm, (can cancel the load sheet)

Medium-sized: hoop sheet diameter 25-60mm

Large-scale: hoop sheet diameter 60-100mm

Huge: hoop sheet diameter is greater than 100mm

Use material:

Hoop sheet: A3, plating zinc on surface

Link: A3 or No. 10 steel, plating zinc on surface.

Be advisable with trapezoidal in the Normal section of helical, screw thread.

Claims (2)

1, a kind of by intermeshing screw, the hoop sheet and with the larynx hoop that the link of the two associated is formed, it is characterized in that:

A, link are the trapezoid shaped solids that a tinsel surrounds, its right flank has the afterbody Joint of an afterbody and trapezoidal bottom surface, end at the afterbody of bottom surface, perforate 1-5 is individual to match with the hook with hoop sheet afterbody, has gap 1-5 to hold the head of screw on the right flank of link;

1-5 of B, hoop sheet quantity, its head passes the gap of link basifacial opening in left side and right flank, the helical of hoop on the sheet is meshed above the inwall of link bottom surface with screw thread on the screw, and binding round the sheet afterbody has hook, is hooked in the hole of afterbody end of above-mentioned link;

C, a load sheet is arranged in link, its cross section is

Shape, the right part plane of load sheet contacts with the screw tail end face, and the forward position of two aliform sheets of load sheet contacts with the inwall of link left surface.

2, larynx hoop as claimed in claim 1 is characterized in that there is bluff piece the both sides of the left surface of link.

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