CN2403950Y - Negative pressure valve - Google Patents
Negative pressure valve Download PDFInfo
- Publication number
- CN2403950Y CN2403950Y CN 00202998 CN00202998U CN2403950Y CN 2403950 Y CN2403950 Y CN 2403950Y CN 00202998 CN00202998 CN 00202998 CN 00202998 U CN00202998 U CN 00202998U CN 2403950 Y CN2403950 Y CN 2403950Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- floating block
- sealing plate
- sealing
- seal ring
- 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 relates to a negative pressure valve, which is mainly composed of a screw rod, a valve cover, a connecting screw thread of the screw rod, an inner step of the screw rod, a movable sealing ring, an externally connecting screw thread, a water inlet hole, a valve body, a sealing plate, a sealing ring of a floating block, a small water outlet hole of the sealing ring of a floating block, a sealing surface, and a water outlet hole. When a user lifts upwards or pushes upwards in a rotary mode through the screw rod and the sealing plate along the valve cover and the connecting screw thread of the screw rod to cause the sealing plate to separate with the sealing ring of a floating block or to seal the sealing ring of a floating block by the sealing plate; thereby, the purpose that valve is conveniently switched can be realized. The utility model has the advantages of simple structure, low cost, convenient adjustment and switch, small abrasion, good sealing property, significant economic benefit, and practical value.
Description
The utility model belongs to valve, and negative pressure valve especially is applicable to the keying occasion of liquid or gas seal pipeline.
Before the utility model is made, the valve of prior art is mainly by valve gap, step, screw rod, exterior seal ring, valve body, external connection screw, osculum, fixed seal ring, the water inlet is formed, the common threaded joint of valve body and valve gap, exterior seal ring is positioned at the step upper end, fixed seal ring is arranged on the osculum place of valve body, the water inlet, osculum is respectively by screw thread and water inlet management, outlet pipe links, liquid or gas enter from the water inlet of intake pipe, screw rod rotates up along the valve gap screw thread, sealing plate separates with seal ring, liquid or gas enter outlet pipe along osculum, and screw rod is rotated down along valve gap, sealing plate compression seal circle sealing osculum.Its major defect is to open and close difficulty, and mechanical wear is big, and fixed seal ring and exterior seal ring are easy to wear, and working life is short, easily leaks.
Task of the present utility model is the shortcoming that overcomes prior art, provide a kind of more reasonable structure, processing request low, open and close and regulate easily, mechanical wear is little, good seal performance, the negative pressure valve in working life.
Negative pressure valve of the present utility model, include valve gap 3, valve gap, step 4 in the screw rod, sliding ring 5, external connection screw 6, water inlet 7, valve body 8, sealing plate 9, floating block seal ring 10, floating block seal ring ostium excurrens 11 and osculum 13, it is characterized in that mainly by screw rod 1, valve gap, screw rod connecting thread 2 and sealing surface 12 are formed, sliding ring 5 is enclosed within on the screw rod 1 and is positioned at valve gap, step 4 bottoms in the screw rod, screw rod 1 bottom is provided with sealing plate 9, floating block seal ring 10 is arranged between sealing plate 9 and the sealing surface 12, the center line of the ostium excurrens 11 of the center line of sealing plate 9 and floating block seal ring 10 is on same straight line, water inlet 7 is positioned at the right-hand member or the left end of screw rod 1 bottom, and osculum 13 is positioned at floating block seal ring 10 bottoms.
The utility model is compared with prior art, and is simple and reasonable, and processing request is low, opens and closes to regulate easily, and mechanical wear is little, good seal performance, and antileaking, cost is low, and Applicable scope is wider, and long service life has important social economic benefit and implementary value.
Fig. 1 is the utility model negative pressure valve structure sectional view.
Wherein 1---screw rod, 2---valve gap, screw rod connecting thread, 3---valve gap, 4---step in valve gap, the screw rod, 5---the movable sealing circle, 6---external connection screw, 7---the water inlet, 8---valve body, 9---sealing plate, 10---the floating block seal ring, 11---floating block seal ring ostium excurrens, 12---sealing surface, 13---osculum.
Fig. 1 is an embodiment of the present utility model.As shown in Figure 1, working principle of the present utility model and embodiment are: negative pressure valve of the present utility model, include valve gap 3, valve gap, step 4 in the screw rod, sliding ring 5, external connection screw 6, water inlet 7, valve body 8, sealing plate 9, floating block seal ring 10, floating block seal ring ostium excurrens 11 and osculum 13, it is characterized in that mainly by screw rod 1, valve gap, screw rod connecting thread 2 and sealing surface 12 are formed, sliding ring 5 is enclosed within on the screw rod 1 and is positioned at valve gap, step 4 bottoms in the screw rod, screw rod 1 bottom is provided with sealing plate 9, floating block seal ring 10 is arranged between sealing plate 9 and the sealing surface 12, the center line of the ostium excurrens 11 of the center line of sealing plate 9 and floating block seal ring 10 is on same straight line, water inlet 7 is positioned at the right-hand member of screw rod 1 bottom, and osculum 13 is positioned at floating block seal ring 10 bottoms.When liquid or gas when the water inlet 7 of intake pipe enters, screw rod 1 rotates up lifting together with sealing plate 9 along valve gap, screw rod connecting thread 2, sealing plate 9 separates with floating block seal ring 10, liquid or gas enter outlet pipe along floating block seal ring ostium excurrens 11, floating block seal ring 10 separated along screw rod 1 with sealing surface 12 and upwards floated this moment, make flows such as liquid or gas and water inlet 7 along osculum 13 outflows.When screw rod 1 is rotated down pushing together with sealing plate 9 along valve gap, screw rod connecting thread 2, sealing plate 9 sealing floating block seal ring 10 and floating seal ring ostium excurrenses 11, this moment, floating seal ring 10 sealed osculums 13 along screw rod 1 downward compression seal face 12.Thereby this apparatus structure advantages of simple, easy processing, cost is low, opens and closes easy to adjustly, and it is little to wear and tear, good airproof performance, Applicable scope is wider, has important social economic benefit and implementary value.
Claims (1)
1, negative pressure valve, include valve gap (3), valve gap, step (4) in the screw rod, sliding ring (5), external connection screw (6), water inlet (7), valve body (8), sealing plate (9), floating block seal ring (10), floating block seal ring ostium excurrens (11), and osculum (13), it is characterized in that mainly by screw rod (1), valve gap, screw rod connecting thread (2) and sealing surface (12) are formed, sliding ring (5) is enclosed within on the screw rod (1) and is positioned at valve gap, step (4) bottom in the screw rod, screw rod (1) bottom is provided with sealing plate (9), floating block seal ring (10) is arranged between sealing plate (9) and the sealing surface (12), the center line of the ostium excurrens (11) of the center line of sealing plate (9) and floating block seal ring (10) is on same straight line, water inlet (7) is positioned at the right-hand member or the left end of screw rod (1) bottom, and osculum (13) is positioned at floating block seal ring (10) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00202998 CN2403950Y (en) | 2000-01-27 | 2000-01-27 | Negative pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00202998 CN2403950Y (en) | 2000-01-27 | 2000-01-27 | Negative pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2403950Y true CN2403950Y (en) | 2000-11-01 |
Family
ID=33571791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00202998 Expired - Fee Related CN2403950Y (en) | 2000-01-27 | 2000-01-27 | Negative pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2403950Y (en) |
-
2000
- 2000-01-27 CN CN 00202998 patent/CN2403950Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |