CN105750506B

CN105750506B - A kind of pump housing shell running gate system

Info

Publication number: CN105750506B
Application number: CN201610320786.4A
Authority: CN
Inventors: 祁阿成
Original assignee: JIANGSU LIYUAN JINHE CASTING CO Ltd
Current assignee: JIANGSU LIYUAN JINHE CASTING CO Ltd
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2018-02-23
Anticipated expiration: 2036-05-16
Also published as: CN105750506A

Abstract

The present invention relates to a kind of pump housing shell running gate system, its innovative point is：The system is split group cored structure, including the first core, the second core, the 3rd core and the 4th core；Fixation is attached by concavo-convex locating slot between core and forms core group mechanism；For large-scale pump housing shell casting because casting wall is thin and profile is circle, in the case where ensureing mold thickness and sandbox uniformity of temperature profile, core selects the stability that its annular spread is easy in pump housing shell casting process, the construction of local area is relatively difficult using casting, and selects four cores to carry out the local later stage that casting is easy to be difficult to cast to pump housing shell and is machined out.

Description

A kind of pump housing shell running gate system

Technical field

The present invention relates to one kind to pour into a mould casting field, more particularly to a kind of pump housing shell running gate system.

Background technology

In the casting of some pump housing shells, especially some the larger pump housing shells when to the technical requirements of the pump housing compared with Height, in the casting of the pump housing shell, the linear plates of ACE are：800mm*600mm, actually available is 780mm*580mm, the pump housing The maximum length and width 505mm*431.9mm of shell, it is thin-wall part in addition, and the arrangement to running gate system is very fastidious, is ensureing to eat On the premise of sand amount and sandbox uniformity of temperature profile, and because the part outward appearance is circle, running gate system selects annular spread, to water inlet It is reasonable that the consideration of mouth needs, and the selection of rising head is specifically contemplated that casting as thin-walled, locally there is the situation of thermal center, selects rising head to carry out Feeding.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of pump housing shell running gate system, disclosure satisfy that the mammoth pump is external Stability in the appearance requirement and casting process of shell, it is easy to the simple machining of later stage process.

In order to solve the above technical problems, the technical scheme is that：A kind of pump housing shell running gate system, its innovative point exist In：The pump housing shell running gate system is split group cored structure, including the first core, the second core, the 3rd core and the 4th sand Core；Fixation is attached by concavo-convex locating slot between core and forms core group mechanism；

First core is that a disk core and a pumping hole core are formed, and the first core forms the casting of pump housing shell The inner chamber of the maximum outside diameter of part and pump housing mouth, the upper surface of disk core are provided with step groove a, the circumference wheel of disk core Neck a is provided with exterior feature, pumping hole core connects into an entirety with disk core；

Second core is the cylinder core of a cylindrical tube shape, is cylindrical hole at the center of the tubular column core, A bayonet socket is provided with cylindrical hole, uses rounded corner between the lower surface of the second core and vertical lateral surface, under the second core Step groove b is provided between end face and vertical medial surface, rank is provided between the upper surface of the second core and vertical medial surface Terraced groove c, the joint face between upper surface and step groove c are arcwall face；Second core is placed in the top of the first core, and second The center line axis of the disk core of the central axis of core and the first core is located on same axis；

3rd core is an annulus core, and a circle neck b, the 3rd core are provided with the inner peripheral surface of the annulus core Coordinate with the first core and be placed in the lateral surface of the first core, the neck b of the 3rd core and the neck a phases of the first core are agreed with pair Positioning is fixed in first core；

4th core is round table-like core, and the side of the round table-like core is concave curved surface, the side of the 4th core Bottom part is provided with step groove d, and the bottom surface of the 4th core is provided with step groove e, and the 4th core is placed in the rank of the first core In terraced groove a, the bottom surface step groove e of the 4th core agrees with the step groove a phases of the first core to be determined the 4th core Position is fixed, and the side bottom step groove d of the 4th core agrees with the step groove b phases of the second core to be determined the second core Position is fixed.

Further, the pumping hole core of first core is placed in disk core circumference side neck a top, prevents The neck b of three cores produces interference when the neck a phases with the first core are agreed with pumping hole core.

Further, a pair are provided with the concave curved surface of the 4th core on the symmetrical locating slot of central axis.

The advantage of the invention is that：For large-scale pump housing shell casting because casting wall is thin and profile is circle, protecting Core selects its annular spread to be easy in pump housing shell casting process in the case of card mold thickness and sandbox uniformity of temperature profile Stability, the construction of local area is relatively difficult using casting, and selects four cores to carry out casting to pump housing shell and is easy to be difficult to The local later stage of casting is machined out.

Brief description of the drawings

The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.

Fig. 1 is the front view of pump housing shell.

Fig. 2 is the side view of pump housing shell.

Fig. 3 is the assembling figure of pump housing shell running gate system.

Fig. 4 is the front view of the first core.

Fig. 5 is the front view of the second core.

Fig. 6 is the front view of the 3rd core.

Fig. 7 is the front view of the 4th core.

As shown in Figures 1 to 7：1st, the first core；11st, disk core；12nd, pumping hole core；2nd, the second core；3rd, the 3rd sand Core；4th, the 4th core；5th, step groove；6th, neck；7th, locating slot；8th, pump housing shell.

Embodiment

The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this It is bright to be limited among described scope of embodiments.

A kind of pump housing shell running gate system as shown in Figures 1 to 7, the pump housing shell running gate system are split group core knot Structure, including the first core 1, the second core 2, the 3rd core 3 and the 4th core 4；Connected between core by concavo-convex locating slot 7 Connect fixation and form core group mechanism.

First core 1 is that a disk core 11 and a pumping hole core 12 are formed, and the first core 1 forms pump housing shell The inner chamber of the maximum outside diameter of casting and pump housing mouth, the upper surface of disk core 11 are provided with step groove, disk core 11 Neck is provided with circumference profile, pumping hole core 12 connects into an entirety with disk core 11.

Second core 2 is the cylinder core of a cylindrical tube shape, is cylindrical hole at the center of the tubular column core, cylinder A bayonet socket is provided with through hole, rounded corner, the lower end of the second core 2 are used between the lower surface of the second core 2 and vertical lateral surface Step groove is provided between face and vertical medial surface, ladder is provided between the upper surface of the second core 2 and vertical medial surface Groove, the joint face between upper surface and step groove are arcwall face；Second core 2 is placed in the top of the first core 1, the second sand The center line axis of the disk core 11 of the central axis of core 2 and the first core 1 is located on same axis.

3rd core 3 is an annulus core, is provided with a circle neck on the inner peripheral surface of the annulus core, the 3rd core 3 with First core 1 coordinates and is placed in the lateral surface of the first core 1, and the neck of the neck of the 3rd core 3 and the first core 1 mutually agrees with pair Positioning is fixed in first core 1.

4th core 4 is round table-like core, and the side of the round table-like core is concave curved surface, the bottom of the side of the 4th core 4 End is arranged with step groove, and the bottom surface of the 4th core 4 is provided with step groove, and the 4th core 5 is placed in the ladder of the first core 1 In groove, the step groove of the bottom surface step groove of the 4th core 4 and the first core 1 is mutually agreed with to be positioned to the 4th core 4 Fixed, the step groove of the side bottom step groove of the 4th core 4 and the second core 2, which is mutually agreed with, determines the second core 2 Position is fixed.

The pumping hole core 12 of first core 1 is placed in the top of the circumference side neck of disk core 11, prevents the 3rd core 3 Neck produces interference when the neck with the first core 1 mutually agrees with pumping hole core 12.

A pair are provided with the concave curved surface of 4th core 4 on the symmetrical locating slot 7 of central axis.

The operation principle of the pump housing shell running gate system is：3rd core 3 is placed in sandbox, places into the first core 1 agrees with the 3rd core 3 and is positioned, and is then placed in the 4th core 4 and the first core 1 carries out agreeing with positioning, be finally put into Two cores 2 carry out agreeing with positioning with the first core 1 and the 4th core 4 respectively.

It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention By appended claims and its equivalent thereof.

Claims

A kind of 1. pump housing shell running gate system, it is characterised in that：The pump housing shell running gate system is split group cored structure, including First core, the second core, the 3rd core and the 4th core；Fixation is attached by concavo-convex locating slot between core and forms sand Xin Zu mechanisms；

First core is that a disk core and a pumping hole core are formed, and the first core forms pump housing shell casting The inner chamber of maximum outside diameter and pump housing mouth, the upper surface of disk core are provided with step groove a, in the circumference profile of disk core Neck a is provided with, pumping hole core connects into an entirety with disk core；

Second core is the cylinder core of a cylindrical tube shape, is cylindrical hole at the center of the tubular column core, cylinder A bayonet socket is provided with through hole, rounded corner, the lower surface of the second core are used between the lower surface of the second core and vertical lateral surface Step groove b is provided between vertical medial surface, it is recessed to be provided with ladder between the upper surface of the second core and vertical medial surface Groove c, the joint face between upper surface and step groove c are arcwall face；Second core is placed in the top of the first core, the second core Central axis and the center line axis of disk core of the first core be located on same axis；

3rd core is an annulus core, and a circle neck b, the 3rd core and are provided with the inner peripheral surface of the annulus core One core coordinates and is placed in the lateral surface of the first core, and the neck b of the 3rd core agrees with to first with the neck a phases of the first core Positioning is fixed in core；

4th core is round table-like core, and the side of the round table-like core is concave curved surface, the bottom of the side of the 4th core Part is provided with step groove d, and the bottom surface of the 4th core is provided with step groove e, and the ladder that the 4th core is placed in the first core is recessed In groove a, the bottom surface step groove e of the 4th core agrees with the step groove a phases of the first core to the 4th core position admittedly Fixed, the side bottom step groove d of the 4th core agrees with the step groove b phases of the second core to the second core position admittedly It is fixed.
A kind of 2. pump housing shell running gate system according to claim 1, it is characterised in that：The pumping hole sand of first core Core is placed in disk core circumference side neck a top.
A kind of 3. pump housing shell running gate system according to claim 1, it is characterised in that：The concave curved surface of 4th core On be provided with a pair on the symmetrical locating slot of central axis.