JPH0419961U - - Google Patents
Info
- Publication number
- JPH0419961U JPH0419961U JP6255090U JP6255090U JPH0419961U JP H0419961 U JPH0419961 U JP H0419961U JP 6255090 U JP6255090 U JP 6255090U JP 6255090 U JP6255090 U JP 6255090U JP H0419961 U JPH0419961 U JP H0419961U
- Authority
- JP
- Japan
- Prior art keywords
- rubber layer
- elastomer
- valve
- valve seat
- case 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 claims description 31
- 239000000806 elastomer Substances 0.000 claims 6
- 239000000126 substance Substances 0.000 claims 4
- 239000012530 fluid Substances 0.000 claims 2
- 239000002904 solvent Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- LLQHSBBZNDXTIV-UHFFFAOYSA-N 6-[5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-4,5-dihydro-1,2-oxazol-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC1CC(=NO1)C1=CC2=C(NC(O2)=O)C=C1 LLQHSBBZNDXTIV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lift Valve (AREA)
Description
第１図はこの考案の実施例１の断面図、第２図
は実施例２の断面図、第３図は実施例３の断面図
、第４図は実施例４の断面図、第５図は実施例５
の断面図、第６図は実施例６の断面図、第７図は
バタフライ弁の断面図、第８図は従来の弁座の断
面図である。
１……弁ケース本体、１０，２０，３０，４０
，５０，６０……弁座、１１，２１，３１，４１
，５１，６１……内側ゴム層、１２，２２，３２
，４２，５３，６４……外側ゴム層、５２……中
間ゴム層、６２……第１中間ゴム層、６３……第
２中間ゴム層。
Fig. 1 is a sectional view of Embodiment 1 of this invention, Fig. 2 is a sectional view of Embodiment 2, Fig. 3 is a sectional view of Embodiment 3, Fig. 4 is a sectional view of Embodiment 4, and Fig. 5. is Example 5
6 is a sectional view of Embodiment 6, FIG. 7 is a sectional view of a butterfly valve, and FIG. 8 is a sectional view of a conventional valve seat. 1... Valve case body, 10, 20, 30, 40
, 50, 60...valve seat, 11, 21, 31, 41
, 51, 61...inner rubber layer, 12, 22, 32
, 42, 53, 64... Outer rubber layer, 52... Intermediate rubber layer, 62... First intermediate rubber layer, 63... Second intermediate rubber layer.
Claims (1)
面を被覆するゴム製の弁座において、この弁座を
構成するゴム層が流体通路に面する内側ゴム層お
よび弁ケース本体に面する外側ゴム層の２層のゴ
ム層からなり、内側ゴム層が耐溶剤性、耐薬品性
等の化学的性質に優れたエラストマからなり、外
側ゴム層が引張り強さ、引裂き強さ等の機械的性
質に優れたエラストマからなることを特徴とする
バタフライ弁の弁座。 (2) バタフライ弁のリング状弁ケース本体の内
面を被覆するゴム製の弁座において、この弁座を
構成するゴム層が流体通路に面する内側ゴム層、
弁ケース本体に面する外側ゴム層、および上記内
側ゴム層と外側ゴム層の間に介在する少なく共１
層の中間ゴム層の積層体であり、内側ゴム層が耐
溶剤性、耐薬品性等の化学的性質に優れたエラス
トマで、外側ゴム層が引張り強さ、引裂き強さ等
の機械的性質に優れたエラストマでそれぞれ形成
され、中間ゴム層が内側ゴム層用のエラストマお
よび外側ゴム層用のエラストマの混合物で形成さ
れたバタフライ弁の弁座。[Claims for Utility Model Registration] (1) In the rubber valve seat that covers the inner surface of the ring-shaped valve case body of the butterfly valve, the rubber layer constituting the valve seat covers the inner rubber layer facing the fluid passage and the valve seat. It consists of two rubber layers, the outer rubber layer facing the case body, the inner rubber layer is made of an elastomer with excellent chemical properties such as solvent resistance and chemical resistance, and the outer rubber layer has high tensile strength and tear strength. A valve seat for a butterfly valve characterized by being made of an elastomer with excellent mechanical properties. (2) In the rubber valve seat that covers the inner surface of the ring-shaped valve case body of the butterfly valve, the rubber layer constituting the valve seat is an inner rubber layer facing the fluid passage;
an outer rubber layer facing the valve case body; and at least one rubber layer interposed between the inner rubber layer and the outer rubber layer.
It is a laminate of intermediate rubber layers, with the inner rubber layer being an elastomer with excellent chemical properties such as solvent resistance and chemical resistance, and the outer rubber layer having excellent mechanical properties such as tensile strength and tear strength. Valve seats for butterfly valves each formed of a superior elastomer, with the intermediate rubber layer formed of a mixture of elastomer for the inner rubber layer and elastomer for the outer rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062550U JPH0750609Y2 (en) | 1990-06-13 | 1990-06-13 | Butterfly valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062550U JPH0750609Y2 (en) | 1990-06-13 | 1990-06-13 | Butterfly valve seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0419961U true JPH0419961U (en) | 1992-02-19 |
| JPH0750609Y2 JPH0750609Y2 (en) | 1995-11-15 |
Family
ID=31591804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990062550U Expired - Lifetime JPH0750609Y2 (en) | 1990-06-13 | 1990-06-13 | Butterfly valve seat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750609Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084908A (en) * | 1994-06-22 | 1996-01-12 | Kitz Corp | Butterfly valve |
| JPH0828749A (en) * | 1994-07-22 | 1996-02-02 | Kubota Corp | Lining structure for fluid equipment |
| WO2005103537A1 (en) * | 2003-05-01 | 2005-11-03 | Asahi Organic Chemicals Industry Co. Ltd. | Seat ring with insert for butterfly valve and metho of manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS479025U (en) * | 1971-02-22 | 1972-10-03 | ||
| JPS5360720A (en) * | 1976-11-13 | 1978-05-31 | Kubota Ltd | Rubber valve seat for butterfly valve |
| JPS5371221U (en) * | 1976-11-13 | 1978-06-14 |
-
1990
- 1990-06-13 JP JP1990062550U patent/JPH0750609Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS479025U (en) * | 1971-02-22 | 1972-10-03 | ||
| JPS5360720A (en) * | 1976-11-13 | 1978-05-31 | Kubota Ltd | Rubber valve seat for butterfly valve |
| JPS5371221U (en) * | 1976-11-13 | 1978-06-14 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084908A (en) * | 1994-06-22 | 1996-01-12 | Kitz Corp | Butterfly valve |
| JPH0828749A (en) * | 1994-07-22 | 1996-02-02 | Kubota Corp | Lining structure for fluid equipment |
| WO2005103537A1 (en) * | 2003-05-01 | 2005-11-03 | Asahi Organic Chemicals Industry Co. Ltd. | Seat ring with insert for butterfly valve and metho of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750609Y2 (en) | 1995-11-15 |
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