CN208945117U - A kind of Invensment centrifugal casting special negative pressure sandbox - Google Patents
A kind of Invensment centrifugal casting special negative pressure sandbox Download PDFInfo
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- CN208945117U CN208945117U CN201821633698.0U CN201821633698U CN208945117U CN 208945117 U CN208945117 U CN 208945117U CN 201821633698 U CN201821633698 U CN 201821633698U CN 208945117 U CN208945117 U CN 208945117U
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- exhaust tube
- cabinet
- screen layer
- negative pressure
- invensment
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Abstract
The utility model relates to metal casting machine field, specifically a kind of Invensment centrifugal casting special negative pressure sandbox.Cabinet including open top, the first exhaust tube of annular is equipped on the bottom wall of cabinet, the first aspirating hole is offered on the first exhaust tube, also packet is equipped with the first screen layer on the first exhaust tube, and the first screen layer along multiple shackle members that the first exhaust tube is spaced apart with the first exhaust tube by being fixedly connected；The second exhaust tube of annular is equipped on the side wall of top of the box, it is respectively separated on the second exhaust tube and offers the second aspirating hole, also packet is equipped with for avoiding the sand in cabinet by the second aspirating hole into the second screen layer in the second exhaust tube on the second exhaust tube, and the second screen layer along multiple shackle members that the second exhaust tube is spaced apart with the second exhaust tube by being fixedly connected.The utility model can be economic and environment-friendly reach and keep negative pressure, and be conveniently replaceable screen layer.
Description
Technical field
The utility model relates to metal casting machine field, specifically a kind of Invensment centrifugal casting special negative pressure sand
Case.
Background technique
Invensment centrifugal casting in the prior art plays very important work in Invensment centrifugal casting process with sandbox
With.Cabinet generallys use the combination formings such as steel plate, channel steel, stainless (steel) wire and grizzly bar, has the following problems:
Invensment centrifugal casting technology is higher to the negative pressure requirements in sandbox, once negative pressure does not reach requirement in sandbox, holds
The exudation of molten metal water is easily led to, casting generates slag inclusion and other issues.Conventional evaporative pattern sandbox is all with square sandbox structure, it is difficult to
Reach negative pressure requirements, mainly since there are gaps between sandbox sidewall plane and granular sand, therefore the edge in sandbox side wall
It is the main portions for generating gas leakage with sand contact site.In order to make the negative pressure and the holding that reach requirement inside sandbox, need to configure
The biggish negative-pressure air fan of power causes excessive energy loss and operation cost.
Negative pressure ventilation pipe in sandbox, which usually wraps, to be equipped with for avoiding sand from entering the screen layer in exhaust tube.Due to screen layer
Inconvenience replacement requires to reinforce screen layer using iron wire and other items at regular intervals in use.So not
But causes screen layer replacement difficulty to further increase, and multi-deck screen stratum reticulare is wrapped in pumping pipe surface, sandbox volume is caused to become
It is small.
Sand utilization rate in sandbox is low, due to sandbox be it is rectangular, the sand that four Angle Positions are loaded has for casting
The too big effect of Cheng Bingwu will lead to casting completion post-processing sand amount instead and increase.
Utility model content
The utility model is intended to provide a kind of Invensment centrifugal casting special negative pressure sandbox, and what which can be economic and environment-friendly reaches
To and keep negative pressure, and be conveniently replaceable screen layer.
In order to solve the above technical problems, the technical solution adopted in the utility model are as follows: a kind of Invensment centrifugal casting is special
With negative-pressure flask, the cabinet including open top is equipped with the first of annular on the bottom wall of cabinet and along the outer rim of cabinet bottom wall
Exhaust tube offers the first aspirating hole in the top surface of the first exhaust tube and towards being respectively separated on the side of cabinet bottom wall central,
Also packet is equipped with for avoiding the sand in cabinet from passing through the first aspirating hole into first in the first exhaust tube on the first exhaust tube
Screen layer, the first screen layer along multiple shackle members that the first exhaust tube is spaced apart with the first exhaust tube by being fixedly connected；?
Interior edge on the side wall of top of the box and along wall box is equipped with the second exhaust tube of annular, bottom surface and court in the second exhaust tube
It is respectively separated on the side at cabinet center and offers the second aspirating hole, also packet is equipped with for avoiding cabinet on the second exhaust tube
In sand the second screen layer in the second exhaust tube is entered by the second aspirating hole, the second screen layer passes through between the second exhaust tube
It is fixedly connected every multiple shackle members of distribution with the second exhaust tube.
Preferably, cabinet is rectangle.
Preferably, the first exhaust tube and the second exhaust tube are all made of square tube production；The bottom surface of first exhaust tube and cabinet
Bottom wall is fixedly connected using welding manner, and the side of the second exhaust tube is fixedly connected with the side wall of cabinet using welding manner.
Preferably, shackle member includes being made of elastic material and is in the support frame of Qian font and is fixed on support frame two
The card ball at end is respectively provided with convex with the first semicircle of card ball corresponding matching clamping in the top and bottom of the first exhaust tube
Item is played, the first semi-cylindrical hill item is distributed along the length direction of the first exhaust tube, on two sides of the second exhaust tube respectively
Equipped with the second semi-cylindrical hill item for being clamped with card ball corresponding matching, length of the second semi-cylindrical hill item along the second exhaust tube
Spend directional spreding.
Preferably, it is equipped with the plug division shunk towards cabinet center position in the bottom of cabinet, it can be by plug division by case
Body is fixed on the open top end of another cabinet；The bottom wall of cabinet is simultaneously set as positioned at the part on edge in the first exhaust tube
The movable plate being detachably connected with cabinet.
Beneficial effect
Four Angle Positions of the utility model in bottom are equipped with the first exhaust tube of annular, and four Angle Positions at top are set
There is the second exhaust tube of annular, improves the utilization rate of sand in cabinet, reduce the treating capacity of sand after the completion of casting, to reduce
The labor intensity of worker.Second exhaust tube can form resistance along between sand in wall box other than taking out suction function
Every avoiding the phenomenon for causing negative pressure not up to standard from the interval training conductance that generates between the smooth flat and graininess sand of cabinet, use
The smaller negative-pressure air fan casing of power being formed in cabinet rapidly and efficiently and keeps negative pressure for compared with the existing technology, thus
Conducive to the quality of raising cast product, and alleviate the operation cost of enterprise.
The first screen layer and the second screen layer in the utility model pass through respectively shackle member be detachably connected on it is corresponding
On exhaust tube, convenience is replaced efficiently, avoiding influences case caused by being wrapped over more screen layers on exhaust tube because replacing inconvenience
The case where body volume.
In preferred embodiments of the present invention, the bottom of box is equipped with plug division and movable plate, in removal movable plate
The open top end that cabinet can be fitted to another cabinet afterwards makes to adapt to the casting of other strip workpiece
Foundry enterprise does not have to specially make sandbox again for such strip workpiece, accomplishes multi-purpose content.
Detailed description of the invention
Fig. 1 is the longitudinal profile structure schematic of the utility model；
Fig. 2 is the longitudinal profile structure schematic of the first pumping tube portion of the utility model；
Fig. 3 is the longitudinal profile structure schematic of the second pumping tube portion of the utility model；
Fig. 4 is the inserted combination structure schematic diagram of the utility model；
Marked in the figure: 1, shackle member, 101, card ball, 102, support frame, the 2, second exhaust tube, the 3, second aspirating hole, 4, case
Body, 401, movable plate, 402, plug division, the 5, first aspirating hole, the 6, first exhaust tube, the 7, second screen layer, 8, second is semicircle
Raised item, the 9, first screen layer, the 10, first semi-cylindrical hill item.
Specific embodiment
As shown in Figure 1 to Figure 3, a kind of Invensment centrifugal casting special negative pressure sandbox of the utility model, including be in rectangle
And the cabinet 4 of open top.The open top end of cabinet 4 is used to load sand, mold and molten metal into cabinet 4.
The first exhaust tube 6 and second being connected with negative-pressure air fan is respectively equipped in the bottom and top of the inner cavity of cabinet 4 to take out
Air extraction in cabinet 4 is reached the negative pressure of requirement by the first exhaust tube 6 and the second exhaust tube 2 by tracheae 2.This implementation
The first exhaust tube 6 and the second exhaust tube 2 in example are all made of square tubes soldering production, and the bottom of the first exhaust tube 6 therein is fixed
It is welded on the outer rim position of 4 bottom wall of cabinet, and remains with certain spacing between 4 side wall of cabinet, so as to by the first screen layer 9
It is fixedly connected with the first exhaust tube 6, in the top surface of the first exhaust tube 6 and towards being respectively separated on the side of 4 center position of cabinet
Offer multiple first aspirating holes 5.To avoid sand from entering in the first exhaust tube 6 by the first aspirating hole 5, in the first exhaust tube 6
Upper packet is equipped with the first screen layer 9.The outer edge side of second exhaust tube 2 is weldingly fixed on the interior edge of the side wall at 4 top of cabinet, second
The bottom surface of exhaust tube 2 and multiple second aspirating holes 3 are offered towards being respectively separated on the side at 4 center of cabinet.For the purposes of keeping away
Exempt from sand to enter in the second exhaust tube 2 by the second aspirating hole 3, packet is equipped with the second screen layer 7 on the second exhaust tube 2.
First screen layer 9 and the second screen layer 7 are solid by multiple shackle members 1 and the first exhaust tube 6 and the second exhaust tube 2
It is fixed, to realize being detachably connected for the first screen layer 9 and the second screen layer 7, consequently facilitating replacement.Shackle member in the present embodiment
1 includes using elastic material production and the Qian shape support frame 102 that can be buckled on the first exhaust tube 6 and the second exhaust tube 2 and consolidating
It is scheduled on two card balls 101 at 102 both ends of support frame.It is corresponding, it is respectively provided in the top and bottom of the first exhaust tube 6
With the first semi-cylindrical hill item 10 of 101 corresponding matching of card ball clamping, length of the first semi-cylindrical hill item 10 along the first exhaust tube 6
Spend directional spreding.The second half with the clamping of 101 corresponding matching of card ball are respectively provided on two sides of the second exhaust tube 2
Circular protrusions item 8, the second semi-cylindrical hill item 8 are distributed along the length direction of the second exhaust tube 2.
The plug division 402 shunk towards 4 center position of cabinet is equipped in the bottom of cabinet 4, the bottom wall of cabinet 4 and positioned at the
The part on edge is set as the movable plate 401 being detachably connected with cabinet 4 in one exhaust tube 6.As shown in figure 4, can be by a cabinet 4
The open top end of another cabinet 4 is fixed on by plug division 402 after removing the movable plate 401 of bottom, to be applicable in
In the casting of elongated casting, foundry enterprise is avoided for the production of individual elongated casting and manufactures special shape mo(u)lding box.In elongated casting
In the Foundry Production of part, it may make in entire case positioned at first exhaust tube 6 at two intermediate positions of cabinet 4 and the second exhaust tube 2
Be evacuated it is more uniform, conducive to the negative pressure for reaching and maintaining design requirement.
Claims (5)
1. a kind of Invensment centrifugal casting special negative pressure sandbox, it is characterised in that: the cabinet (4) including open top, in cabinet
(4) the first exhaust tube (6) of annular is equipped on bottom wall and along the outer rim of cabinet (4) bottom wall, in the top surface of the first exhaust tube (6)
With offer the first aspirating hole (5) towards being respectively separated on the side of cabinet (4) bottom wall central, on the first exhaust tube (6) also
Packet is equipped with for avoiding the sand in cabinet (4) from passing through the first screen layer that the first aspirating hole (5) enter in the first exhaust tube (6)
(9), the first screen layer (9) is solid by the multiple shackle members (1) being spaced apart along the first exhaust tube (6) and the first exhaust tube (6)
Fixed connection；The second exhaust tube (2) of annular is equipped on the side wall at the top of cabinet (4) and along the interior edge of cabinet (4) side wall, the
The bottom surface of two exhaust tubes (2) and the second aspirating hole (3) are offered towards being respectively separated on the side at cabinet (4) center, second
Also packet is equipped with for avoiding the sand in cabinet (4) from entering in the second exhaust tube (2) by the second aspirating hole (3) on exhaust tube (2)
The second screen layer (7), the second screen layer (7) passes through multiple shackle members (1) and second for being spaced apart along the second exhaust tube (2)
Exhaust tube (2) is fixedly connected.
2. a kind of Invensment centrifugal casting special negative pressure sandbox according to claim 1, it is characterised in that: cabinet (4) is
Rectangle.
3. a kind of Invensment centrifugal casting special negative pressure sandbox according to claim 2, it is characterised in that: the first exhaust tube
(6) and the second exhaust tube (2) is all made of square tube production；The bottom surface of first exhaust tube (6) and the bottom wall of cabinet (4) use welding side
Formula is fixedly connected, and the side of the second exhaust tube (2) is fixedly connected with the side wall of cabinet (4) using welding manner.
4. a kind of Invensment centrifugal casting special negative pressure sandbox according to claim 3, it is characterised in that: shackle member (1)
Including being made of elastic material and being in the support frame (102) of Qian font and the card ball for being fixed on support frame (102) both ends
(101), the first half with the clamping of card ball (101) corresponding matching are respectively provided in the top and bottom of the first exhaust tube (6)
Circular protrusions item (10), the first semi-cylindrical hill item (10) is distributed along the length direction of the first exhaust tube (6), in the second exhaust tube
(2) be respectively provided on two sides with card ball (101) corresponding matching clamping the second semi-cylindrical hill item (8), second
Semi-cylindrical hill item (8) is distributed along the length direction of the second exhaust tube (2).
5. a kind of Invensment centrifugal casting special negative pressure sandbox according to claim 1, it is characterised in that: in cabinet (4)
Bottom be equipped with the plug division (402) shunk towards cabinet (4) center position, can be by plug division (402) by cabinet (4) installation
It is fixed on the open top end of another cabinet (4)；The bottom wall of cabinet (4) is simultaneously set positioned at the part on the first exhaust tube (6) interior edge
It is set to the movable plate (401) being detachably connected with cabinet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821633698.0U CN208945117U (en) | 2018-10-09 | 2018-10-09 | A kind of Invensment centrifugal casting special negative pressure sandbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821633698.0U CN208945117U (en) | 2018-10-09 | 2018-10-09 | A kind of Invensment centrifugal casting special negative pressure sandbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208945117U true CN208945117U (en) | 2019-06-07 |
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ID=66740798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821633698.0U Active CN208945117U (en) | 2018-10-09 | 2018-10-09 | A kind of Invensment centrifugal casting special negative pressure sandbox |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618989A (en) * | 2022-03-07 | 2022-06-14 | 芜湖泓鹄材料技术有限公司 | Full mold casting negative pressure sand box capable of realizing partitioned negative pressure |
-
2018
- 2018-10-09 CN CN201821633698.0U patent/CN208945117U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618989A (en) * | 2022-03-07 | 2022-06-14 | 芜湖泓鹄材料技术有限公司 | Full mold casting negative pressure sand box capable of realizing partitioned negative pressure |
| CN114618989B (en) * | 2022-03-07 | 2023-05-26 | 芜湖泓鹄材料技术有限公司 | Full mold casting negative pressure sand box for realizing partition negative pressure |
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