CN202992289U - Combination valve of stop valve and check valve - Google Patents
Combination valve of stop valve and check valve Download PDFInfo
- Publication number
- CN202992289U CN202992289U CN 201220517071 CN201220517071U CN202992289U CN 202992289 U CN202992289 U CN 202992289U CN 201220517071 CN201220517071 CN 201220517071 CN 201220517071 U CN201220517071 U CN 201220517071U CN 202992289 U CN202992289 U CN 202992289U
- Authority
- CN
- China
- Prior art keywords
- valve
- combination
- outlet conduit
- flap
- spheroid
- 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 - Lifetime
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Abstract
The utility model relates to a combination valve of a stop valve and a check valve. The combination valve comprises a valve body, a valve rod, a valve base and a valve clack, wherein the valve rod extends into an inner cavity of the valve body, the lower end of the valve rod is connected with the valve clack closely connected with the valve base, a ball body is arranged in an inner cavity of an outlet of the valve, the diameter of the ball body is larger than that of an outlet pipeline a and smaller than that of an outlet pipeline b, and the lower end of the ball body is provided with a pin. When the combination valve is used, a medium can be effectively prevented from reversely flowing and overflowing.
Description
Technical field
The utility model relates to a kind of cut-off, non-return combination valve.
Background technique
This valve is used for the two-colour fluviograph of steam boiler or other pressurized container sensed water level, control the water inlet of water-level gauge, the water-level gauge observation hole is glass, mica, in use, if former thereby caused glass, mica to break due to fouling, corrosion etc., thus the pressure of inlet is disappeared, cause overflowing of medium, not only wasted resource, and personal safety has been caused great potential safety hazard.
Summary of the invention
The combination valve that technical problem to be solved in the utility model is to provide a kind of observation hole glass when water-level gauge that is connected with two-colour fluviograph, can prevents medium counter flow when mica breaks.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a combination valve, comprise valve body, valve rod, valve seat and flap, valve rod stretches in the inner chamber of valve body and the lower end is connected with flap, flap and valve seat match closely, it is characterized in that: in the outlet inner chamber of valve, a spheroid is arranged, the diameter of spheroid is greater than the diameter of outlet conduit a and less than the diameter of outlet conduit b, the lower end of spheroid is provided with a pin.Use the combination valve of said apparatus, when the glass tube of inlet or plastic tube break, can promote spheroid during the medium counter flow of outlet conduit and move upward, finally blocked the outer pipe road junction, make the not effect of adverse current of medium thereby reached, more can not overflow.Be connected with thimble in the lower end of the sealing surface of flap in addition, thimble will exceed outlet conduit after valve closing be during in order to ensure counter closing, and spheroid can not get lodged in the outer pipe road junction, guarantees that working state is normal.
Description of drawings
Fig. 1 is the structural drawing of combination valve of the present utility model.
Embodiment
by structural drawing shown in Figure 1 as can be known, valve rod 1 stretches in the inner chamber of valve body 2, cover has valve clack cover 9 in the lower end of valve rod 1, flap 3 is connected with valve body 1 by screw thread with valve clack cover 9, spherical position, the lower end of valve rod 1 is close to the inwall of flap 3, flap 3 matches closely with valve seat 4, lower end at the sealing surface of flap 3 is connected with thimble 5, thimble 5 can extend in outlet conduit b when valve closing, the lower end of valve body 1 is connected with arm 8, spheroid 6 is arranged in outlet conduit b, the diameter of spheroid 6 is greater than the diameter of outlet conduit a and less than the diameter of outlet conduit b, and be provided with a pin 7 in the lower end of spheroid 6, pin 7 is horizontally through outlet conduit b and is connected with arm 8.
Claims (2)
1. a cut-off, non-return combination valve, comprise valve body (2), valve rod (1), valve seat (4) and flap (3), valve rod (1) stretches in the inner chamber of valve body (2) and the lower end is connected with flap (3), flap (3) matches closely with valve seat (4), it is characterized in that: in the outlet conduit (b) of valve, a spheroid (6) is arranged, the diameter of spheroid (6) is greater than the diameter of outlet conduit (a) and less than the diameter of outlet conduit (b), the lower end of spheroid (6) is provided with a pin (7).
2. combination valve according to claim 1, it is characterized in that: the lower end of the sealing surface of described flap (3) is connected with thimble (5), and thimble (5) will exceed outlet conduit (a) after valve closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517071 CN202992289U (en) | 2012-10-10 | 2012-10-10 | Combination valve of stop valve and check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517071 CN202992289U (en) | 2012-10-10 | 2012-10-10 | Combination valve of stop valve and check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992289U true CN202992289U (en) | 2013-06-12 |
Family
ID=48563469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220517071 Expired - Lifetime CN202992289U (en) | 2012-10-10 | 2012-10-10 | Combination valve of stop valve and check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992289U (en) |
-
2012
- 2012-10-10 CN CN 201220517071 patent/CN202992289U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |