CN2594592Y

CN2594592Y - Flexible cast-iron pipe joint for water drain

Info

Publication number: CN2594592Y
Application number: CN 02235295
Authority: CN
Inventors: 刘泮书
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2003-12-24
Anticipated expiration: 2012-05-27

Abstract

The utility model relates to a flexible cast iron pipe joint for water drain. The utility model comprises two end heads of a cast iron pipe and is characterized in that one end of the two end heads of the cast iron pipe is provided with a bell mouth; the bottom end of the inner part of the bell mouth is provided with a platform, and the other end is provided with a socket; the bottom end of the outer part of the socket is provided with a platform; one end of the socket is inserted in one end of the bell mouth; the head ends of the bell mouth and the socket are respectively abutted on respective platform; the contacting position of respective head end and respective platform is provided with a sealing rubber ring; the pipe walls of the bell mouth and the socket are respectively provided with a corresponding screw hole; after the corresponding screw holes are aligned, a fixing bolt is connected with a screw thread. The utility model has the advantages that the utility model avoids the defects of the connection mode of a water drainage pipe which is used in China at present; the production process is simple; no other accessories are required except the sealing rubber ring, and production cost is lowered; the utility model actually has the function of a flexible joint; the installation and the maintenance are convenient; the utility model has a good commerce development prospect.

Description

Flexible interface is cylinder iron managed in draining

(1) technical field:

The utility model relates to a kind of draining pipe joint, and flexible interface is cylinder iron managed in particularly a kind of draining.

(2) background technique:

At present, employed drainage pipe interface on the Domestic market, mainly contain following several: 1, the flexible interface cast iron tube of joint socket formula flange plate connection: fall behind though this product has avoided old-fashioned cast iron tube to install, during Cost of repair and maintenance, can't guarantee non-leakage and do not have a defective of shock resistance, but the annexes such as flange plate that increase newly are too many, no matter are from fabrication and processing or from installing, all increase certain degree of difficulty, also improved the cost of product simultaneously; 2, no bellmouth collar-shaped flexible interface cast iron tube: though this product has accomplished that installation and maintenance conveniently, and the good characteristics of anti-seismic performance have been reached, but because its no bellmouth, full tube hoop and rubber sleeve connect, the perpendicularity except that can't guarantee to install the time, and different because of the employed material temperature variation of pipe collar, pipe collar is easy to occur loosening phenomenon, be difficult to guarantee non-leakage when therefore, the normal phase uses; 3, PVC plastic drain-pipe: this product has been accomplished easy for installation, reasonable price, but in use there are many defectives, this product aging quality resistance of domestic production at present is not enough in addition, crack performance has in use appearred in portioned product, more seriously, the noise that this product is produced in drainage procedure is very serious, and the owner does not have good evaluation to it.

(3) summary of the invention:

The purpose of this utility model is to design a kind of draining and cylinder iron manages flexible interface, it be a kind of have meet NBS, installation and maintenance convenience, no annex, cheap and can guarantee non-leakage new design scheme.

The technical solution of the utility model: flexible interface is cylinder iron managed in a kind of draining, comprises the cast iron tube two ends, it is characterized in that the end in the cast iron tube two ends is a bellmouth, and there is a platform bottom in the bellmouth; The other end is a socket, and there is a platform the outer bottom of socket; One end of said socket is inserted in the end of bellmouth, the head end of bellmouth and socket is butted on respectively on separately the platform, there is O-ring seal at head end separately and contact with platform place separately, bellmouth has corresponding screw with the tube wall place of socket, and corresponding screw is aimed at the back according to being threaded fixing bolt.

Have on the platform separately that the head end of above-mentioned said bellmouth and socket is butted on respectively and place the limited impression of O-ring seal separately, on the corresponding O-ring seal of placing the positive stop lug boss of O-ring seal is separately arranged, place the limited impression of O-ring seal separately on the platform separately of said bellmouth and the head end of socket and be drive fit with the positive stop lug boss of O-ring seal separately and be connected.

The corresponding screw at above-mentioned said bellmouth and socket tube wall place with can have 3-6 according to the fixing bolt that is threaded.

Using method of the present utility model is: when doing pipe joint, the bellmouth and the corresponding O-ring seal of socket are placed on being connected separately on the platform of bellmouth and socket respectively, again socket is inserted in bellmouth and finds each self-corresponding screw accurately, at last with fixing bolt according to being threaded in each self-corresponding screw.

Superiority of the present utility model is: 1, this programme has been avoided the defective of present domestic used waste pipe Placement fully, and production technology is simple, and except that connecting Luo bolt and anti-seepage sealant circle, no any other annex greatly reduces cost of production; 2, avoid direct contact between the tube and tube, can really play the effect of flexible interface, accomplished that simultaneously installation, maintenance is convenient, shortened the installation time, prolonged working life; 3, anti-seismic performance is good, meets the requirement of country to this series products anti-seismic performance, owing to increased the length of joint socket, and passed through machining at the joint socket place, therefore, the perpendicularity when having guaranteed to install; 4, be provided with the two seals cushion rubber and the antiseepage groove of bellmouth and spigot, avoided the generation of seepage phenomenon fully; 5, this programme is according to the standard design of GB/T12772-1999, therefore, meets NBS fully, and employed connection Luo bolt also adopts standard piece, need not special processing; 6, this product both had been fit to individual workship's production, also was fit to the large-scale production in batch of massive casting factory, and the good commercial DEVELOPMENT PROSPECT is arranged, and was the optimal design that meets the national conditions will of the people.

(4) description of drawings:

Accompanying drawing 1 is cylinder iron managed the integral installation structural representation of flexible interface for the related a kind of draining of the utility model.

Accompanying drawing 2 is cylinder iron managed the cross section view at the connecting bolt place of flexible interface for the related a kind of draining of the utility model.

Accompanying drawing 3 is cylinder iron managed the interior with O-ring seal structural representation (Fig. 3-a is a plan view, and Fig. 3-b is the A-A sectional drawing) of flexible interface for the related a kind of draining of the utility model.

Accompanying drawing 4 is cylinder iron managed the external application O-ring seal structural representation (Fig. 4-a is a plan view, and Fig. 4-b is the B-B sectional drawing) of flexible interface for the related a kind of draining of the utility model.

Wherein: 1 is cast iron tube one termination, and 2 is another termination of cast iron tube, and 3 is bellmouth, 4 is socket, and 5 is the bellmouth platform, and 6 is the socket platform, 7 is the external sealed cushion rubber, 8 is interior O-ring seal, and 9 is limited impression, and 10a is an external sealed cushion rubber positive stop lug boss, 10b is interior O-ring seal positive stop lug boss, 11 is fixing bolt, and 12a is the socket screw, and 12b is the bellmouth screw.

(5) embodiment:

Embodiment: flexible interface (seeing Fig. 1-4) is cylinder iron managed in a kind of draining, comprises cast iron tube two ends 1 and 2, it is characterized in that the end in the cast iron tube two ends is a bellmouth 3, and there is a platform 5 bottom in the bellmouth 3; The other end is a socket 4, and there is a platform 6 the outer bottom of socket; One end of said socket 4 is inserted in the end of bellmouth 3, the head end of bellmouth 3 and socket 4 is butted on respectively on separately the

platform

5 and 6, there are O-

ring seal

7 and 8 in head end separately and contact with platform place separately, bellmouth 3 has corresponding screw 12a and 12b with the tube wall place of socket 4, and corresponding screw 12a aims at the back according to being threaded fixing bolt 11 with 12b.

Have on the platform separately that the head end of above-mentioned said bellmouth 3 and socket 4 is butted on respectively and place the limited impression 9 of O-ring seal separately, on the corresponding O-ring seal of placing 7 and 8 the positive stop lug boss 10a and the 10b of O-ring seal are separately arranged, place the limited impression 9 of O-ring seal separately on the platform separately of said bellmouth 3 and the head end of socket 4 and be drive fit with the positive stop lug boss 10a of O-ring seal separately with 10b and be connected.

The corresponding screw 12a at above-mentioned said bellmouth 3 and socket 4 tube wall places and 12b with have 3 according to the fixing bolt 11 that is threaded.

Claims

1, flexible interface is cylinder iron managed in a kind of draining, comprises the cast iron tube two ends, it is characterized in that the end in the cast iron tube two ends is a bellmouth, and there is a platform bottom in the bellmouth; The other end is a socket, and there is a platform the outer bottom of socket; One end of said socket is inserted in the end of bellmouth, the head end of bellmouth and socket is butted on respectively on separately the platform, there is O-ring seal at head end separately and contact with platform place separately, bellmouth has corresponding screw with the tube wall place of socket, and corresponding screw is aimed at the back according to being threaded fixing bolt.

2, flexible interface is cylinder iron managed in said a kind of draining according to claim 1, it is characterized in that having on the platform separately that the head end of said bellmouth and socket is butted on respectively and place the limited impression of O-ring seal separately, on the corresponding O-ring seal of placing the positive stop lug boss of O-ring seal is separately arranged, place the limited impression of O-ring seal separately on the platform separately of said bellmouth and the head end of socket and be drive fit with the positive stop lug boss of O-ring seal separately and be connected.

3, flexible interface is cylinder iron managed in said a kind of draining according to claim 1, the corresponding screw that it is characterized in that said bellmouth and socket tube wall place with can have 3-6 according to the fixing bolt that is threaded.