CN200979480Y

CN200979480Y - A hydraulic sealing device for a square port of a blank cast

Info

Publication number: CN200979480Y
Application number: CN 200620111439
Authority: CN
Inventors: 刘联辉
Original assignee: JIANGJIN TURBOCHARGER PLANT
Current assignee: Chongqing Jiangzeng Machinery Co., Ltd.
Priority date: 2006-09-28
Filing date: 2006-09-28
Publication date: 2007-11-21
Anticipated expiration: 2016-09-28

Abstract

The utility model relates to a water pressure sealing device used in blank cast square-mouth, which is characterized in that a boss (3c) of an inner clamping cover (3) is arranged in a recess (2d) at the lower part of a rubber cushion (2). A boss (2c) at the upper part of the rubber cushion (2) is arranged in a recess (1d) at the lower part of an outer cover (1). The intermediate section of the outer cover (1) plane is provided with a through pipe (1a) and a water inlet-outlet pipe (1c) which is communicated with one side of the through pipe (1a) upper part. The lower part of the through pipe (1a) penetrates the through hole (2a) at the middle of the rubber cushion (2) and the through hole (3a) at the middle of the inner clamping cover (3). A coach bolt (4) is provided in the through pipe (1a). The lower end of the coach bolt is weld connected with the plane centre point of a rectangular clamp (6). The utility model used in blank cast square-mouth has good sealing property, convenient installation, which shortens production circle, improves productivity and greatly saves the cost of manufacturing and checking.

Description

A kind of hydraulic pressure packoff that is used for the square oral area of rough casting

Technical field

The utility model relates to a kind of hydraulic pressure packoff that is used for the square oral area of rough casting, particularly a kind of hydraulic pressure packoff that is used for the square oral area of supercharger rough casting.

Background technology

The supercharger housing is according to the technical conditions requirement, and the hydraulic pressure that should carry out pressure 〉=0.7Mpa detects.For these years, the hydraulic pressure of square orifice end surface under rough that countless engineering technical personnel are carrying out supercharger casing blank foundry goods always detects trial, because cast blank rough surface injustice, casting condition can not be accomplished the rough surface as machinery processing down, and conveniently have in die joint design technology molding gradient for delivery, thereby cause the not exclusively problem in a plane of this end face, therefore, no human relations are with hand-held abrasive machine this end face of how polishing, all be difficult to guarantee this end face in a plane, when the pump water pressure reached 0.1～0.2Mpa, water was just gone out rubber spacer, make seal failure, hydraulic pressure detects and can't realize.Therefore, so far to detect all be that tapping hole on processing plane added rubber blanket in addition after square orifice end surface with this rough casting carried out machining on the iron covering plate to the hydraulic pressure of supercharger rough casting, be connected with the processing plane of bolt, carry out hydraulic pressure again and detect iron covering plate and this square oral area.Though this method is feasible, and uses till today decades always, there are following shortcomings in it: 1. the square orifice end surface of rough casting needs machining, and the expense that detects a rough casting is higher.2. to carry out that hydraulic pressure detects be last procedure after the machining to rough casting, in case detect defectively, front tens road manufacturing procedures are all made idle work, have promptly wasted processing charges, have influenced manufacturing schedule again.3. to carry out the hydraulic pressure sense cycle long from being worked into, and quality information feedback is slow, to the adjustment of rough-cast technology, improve unfavorablely, easily causes the batch of rough casting to scrap.

Summary of the invention

The purpose of this utility model is to provide the hydraulic pressure packoff of a kind of good airproof performance, the undressed square oral area that is used for the supercharger rough casting easy for installation.

The purpose of this utility model is achieved in that a kind of hydraulic pressure packoff that is used for the square oral area of rough casting, it is characterized in that: the boss of interior holddown plate places in the concave station of rubber blanket bottom, and the rubber blanket upper boss places in the concave station of outer cover plate bottom; The intake-discharge pipe that the outer cover plate in-plane is provided with siphunculus and is communicated with siphunculus top one side, the bottom of siphunculus pass the through hole at rubber blanket middle part and the through hole at interior holddown plate middle part; Square head bolt places in the siphunculus, and by the band bar nut and the packing ring location at oral area place, siphunculus upper end, fixedly connected with the planar central place of clamp in its lower end; Relatively siphunculus is symmetrical arranged tapped through hole on outer cover plate, and the through hole connection of corresponding settings on tapped through hole and rubber blanket and the interior friction top, bolt screw-in tapped through hole and pass above-mentioned two through holes after, locate by nut and packing ring.

Gradient around the boss of gradient around the concave station inboard of above-mentioned rubber blanket bottom and described interior holddown plate is complementary, all around can uniform-compression with the concave station inboard that guarantees the rubber blanket bottom.

The described clamp of fixedlying connected with above-mentioned square head bolt one end is rectangular flat plate or elliptical plate, makes it can put into the square oral area of rough casting, tangles the step surface in this square orifice end surface after rotating 90 degree.

Can be on above-mentioned outer cover plate relatively siphunculus at the monosymmetric of its length direction a tapped through hole is set respectively, and all with described rubber blanket and described on the holddown plate through hole of corresponding setting communicate.

The outer end oral area of the described intake-discharge pipe that above-mentioned outer cover plate top is provided with is provided with internal thread, in order to connect water filling water pipe and pressure tester.

Installation of the present utility model and principle of work are: earlier the length direction of the lower end clamp of hydraulic pressure packoff of the present utility model is adjusted to after the length direction of the square oral area of tested supercharger rough casting is consistent, again its underpart is put into this square orifice end surface, and the periphery of rubber blanket places on this square orifice end surface, at last the square head bolt on the siphunculus of outer cover plate is rotated 90 degree, make its lower end clamp tangle the interior step surface of this square orifice end surface; Rotating band bar nut is pressed on this square orifice end surface outer cover plate; Tighten the bolt of siphunculus both sides on the outer cover plate then, the bottom concave station of holddown plate extruding rubber blanket closely contacts with the inner surface of this square oral area all around in making.

Pump into water from intake-discharge pipe, after water is full of tested supercharger rough casting, pressure is passed to the bottom concave station of rubber blanket, make it further be extruded distortion, contact tightr with the inner surface of this square oral area by hydraulic pressure.This moment, hydraulic pressure was high more, and the bottom concave station deflection of rubber blanket is big more, seals more tightly, thereby reaches the purpose of sealing.

In sum, the good airproof performance that is used for the hydraulic pressure packoff of the square oral area of rough casting of the present utility model, easy for installation, and shortened the production cycle, and improved throughput rate, save a large amount of manufacturings and detected cost.

Description of drawings

Fig. 1: the structural representation that vertically partly cuts open of the utility model embodiment;

Fig. 2: the structural representation of laterally analysing and observe of the utility model embodiment.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment: referring to above-mentioned accompanying drawing, a kind of hydraulic pressure packoff that is used for the undressed square oral area of rough casting, it is characterized in that: the boss 3c of interior holddown plate 3 places in the rubber blanket 2 bottom concave station 2d, and rubber blanket 2 upper boss 2c place in the outer cover plate 1 bottom concave station 1d; The intake-discharge pipe 1c that outer cover plate 1 in-plane is provided with siphunculus 1a and is communicated with siphunculus 1a top one side, the through hole 2a at rubber blanket 2 middle parts and the through hole 3a at interior holddown plate 3 middle parts are passed in the bottom of siphunculus 1a; Square head bolt 4 places in the siphunculus 1a, and by the band bar nut 4a and the packing ring 4b location at oral area place, siphunculus 1a upper end, the planar central place of its lower end and rectangle clamp 6 is welded to connect.

Gradient around the boss 3c of gradient around the concave station 2d inboard of above-mentioned rubber blanket 2 bottoms and described interior holddown plate 3 is complementary.

On the above outer cover plate 1 relatively siphunculus 1a at its length direction monosymmetric a tapped through hole 1b is set respectively, all with described rubber blanket 2 and described in corresponding through hole 2b, 3b are set on the holddown plate 3 and communicate.After bolt 5 screws in tapped through hole 1b and passes through hole 2b, 3b, by nut 5a and packing ring 5b location.

In addition, be provided with screw thread in the outer end oral area of the described intake-discharge pipe 1c that is provided with on above-mentioned outer cover plate 1 top.Hydraulic pressure packoff in the present embodiment is connected with the square oral area of rough casting 7.

Claims

1, a kind of hydraulic pressure packoff that is used for the square oral area of rough casting, it is characterized in that: the boss (3c) of interior holddown plate (3) places in rubber blanket (2) the bottom concave station (2d), and rubber blanket (2) upper boss (2c) places in outer cover plate (1) the bottom concave station (1d); The intake-discharge pipe (1c) that outer cover plate (1) in-plane is provided with siphunculus (1a) and is communicated with siphunculus (1a) top one side, the bottom of siphunculus (1a) pass the through hole (2a) at rubber blanket (2) middle part and the through hole (3a) at interior holddown plate (3) middle part; Square head bolt (4) places in the siphunculus (1a), and by the band bar nut (4a) and packing ring (4b) location at oral area place, siphunculus (1a) upper end, fixedly connected with the planar central place of clamp (6) in its lower end; Go up relative siphunculus (1a) at outer cover plate (1) and be symmetrical arranged tapped through hole (1b), and tapped through hole (1b) is communicated with through hole (2b), (3b) that rubber blanket (2) and interior holddown plate (3) are gone up corresponding setting, after bolt (5) screws in tapped through hole (1b) and passes through hole (2b), (3b), by nut (5a) and packing ring (5b) location.

2, the hydraulic pressure packoff that is used for the square oral area of rough casting as claimed in claim 1 is characterized in that: the gradient around the concave station (2d) of described rubber blanket (2) bottom is inboard and boss (3c) gradient all around of described interior holddown plate (3) are complementary.

3, the hydraulic pressure packoff that is used for the square oral area of rough casting as claimed in claim 1 or 2 is characterized in that: the described clamp (6) of fixedlying connected with described square head bolt (4) one ends is rectangular flat plate or elliptical plate.

4, the hydraulic pressure packoff that is used for the square oral area of rough casting as claimed in claim 1 or 2, it is characterized in that: go up monosymmetric respectively the be provided with tapped through hole (1b) of relative siphunculus (1a) at described outer cover plate (1) at its length direction, all with described rubber blanket (2) and described in corresponding through hole (2b) is set on the holddown plate (3), (3b) communicates.

5, the hydraulic pressure packoff that is used for the square oral area of rough casting as claimed in claim 1 or 2 is characterized in that: the outer end oral area of the described intake-discharge pipe (1c) that described outer cover plate (1) top is provided with is provided with internal thread.