CN202291240U - Inner core box for butterfly valve - Google Patents
Inner core box for butterfly valve Download PDFInfo
- Publication number
- CN202291240U CN202291240U CN2011203522236U CN201120352223U CN202291240U CN 202291240 U CN202291240 U CN 202291240U CN 2011203522236 U CN2011203522236 U CN 2011203522236U CN 201120352223 U CN201120352223 U CN 201120352223U CN 202291240 U CN202291240 U CN 202291240U
- Authority
- CN
- China
- Prior art keywords
- core box
- butterfly valve
- inner core
- annular boss
- pipe body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an inner core box for a butterfly valve. The inner core box comprises a pipe body, wherein a plurality of annular lug bosses are movably arranged on the inner wall of the pipe body from top to bottom; and radial through holes which are communicated with one another are formed on the inner wall of the pipe body and on a plurality of annular lug bosses. The inner core box has a reasonable structure, the yield of products is high, the working efficiency is improved, the labor intensity of a worker is greatly lightened, and the cost is reduced.
Description
Technical field
The utility model relates to core box in a kind of butterfly valve.
Background technology
Butterfly valve is a kind of usefulness valve commonly used, is widely used in the industrial and agricultural production.The production of butterfly valve is to carry out the molten iron casting after being shaped in sandbox through the butterfly valve mould to form.Butterfly valve mould commonly used comprises external mold and core box; Said external mold comprises cylindrical shell, reaches with the front and back flange of cylindrical shell rear and front end flexible connection and pass through the pipe nipple that is connected mutually with the activity of cylindrical shell side; The tube upper end is sealed with bottom; The center of bottom is provided with through hole, and through hole is provided with removable cover, and core box is a straight tube-like.For ease of the demoulding, external mold carries out subdivision along diameter line, and the core box straight tube dissects along diameter line, becomes two arc rings; Annular boss and straight tube inwall are connected as a single entity, and the shortcoming of above-mentioned butterfly valve mould is: external mold is in sandbox during the demoulding, and the sand mold between pipe nipple both sides and the flange makes that external mold can't the demoulding; Each manufacturing enterprise all is through destroying the sand mold between pipe nipple and the flange, carrying out repairing after the demoulding, when core box and external mold are located again now; Need to establish support, when making casting like this, the case that often occurs rising, frustrate case, pore, crinosity and sting at two ends; Weight does not reach standard, and molding is difficult, occurs falling husky, damaged easily; Surface irregularity causes the butterfly valve blank processing after the casting time-consuming, and yield rate has only 75-80%.
The utility model content
The purpose of the utility model provides core box in a kind of butterfly valve, and it is low to solve the butterfly valve blank yield rate that core box is produced in the existing reed valve, processing difficulties, the problem that production cost is high.
The technical scheme of the utility model is following:
Core box in a kind of butterfly valve includes body, is movably installed with a plurality of annular boss on the inwall of said body from top to bottom respectively, is respectively equipped with the radial direction through hole that connects on the sidewall of said body He on a plurality of annular boss.
Core box in the described butterfly valve, it is characterized in that: described a plurality of annular boss cooperate on the inwall that is movably arranged on body from top to bottom with latch through jack respectively.
Interior core box takes off pin when making the sand mold demoulding, body can direct demold, and a plurality of annular boss also can be removed, and therefore the blank quality after the casting is high.
The beneficial effect of the utility model:
The utility model is rational in infrastructure, and the yield rate of product is high, has improved operating efficiency, has alleviated working strength of workers greatly, has reduced cost.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Referring to Fig. 1, core box in a kind of butterfly valve includes body 1, on the inwall of body 1 from top to bottom respectively jack cooperate with latch 3 and be movably installed with three annular boss 2, be respectively equipped with the radial direction through hole that connects on the sidewall of body 1 He on three annular boss 2.
Claims (2)
1. the interior core box of butterfly valve includes body, is movably installed with a plurality of annular boss on the inwall of said body from top to bottom respectively, is respectively equipped with the radial direction through hole that connects on the sidewall of said body He on a plurality of annular boss.
2. core box in the butterfly valve according to claim 1, it is characterized in that: described a plurality of annular boss cooperate on the inwall that is movably arranged on body from top to bottom with latch through jack respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203522236U CN202291240U (en) | 2011-09-20 | 2011-09-20 | Inner core box for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203522236U CN202291240U (en) | 2011-09-20 | 2011-09-20 | Inner core box for butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202291240U true CN202291240U (en) | 2012-07-04 |
Family
ID=46360220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203522236U Expired - Fee Related CN202291240U (en) | 2011-09-20 | 2011-09-20 | Inner core box for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202291240U (en) |
-
2011
- 2011-09-20 CN CN2011203522236U patent/CN202291240U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20120920 |