CN215410378U - Axial flow type check valve with silt prevention function - Google Patents
Axial flow type check valve with silt prevention function Download PDFInfo
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- CN215410378U CN215410378U CN202023261289.2U CN202023261289U CN215410378U CN 215410378 U CN215410378 U CN 215410378U CN 202023261289 U CN202023261289 U CN 202023261289U CN 215410378 U CN215410378 U CN 215410378U
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Abstract
The utility model provides an axial-flow type check valve with prevent silt function, includes the valve body, and the valve body front end is the entry end, and the valve body rear end is the exit end, and valve body entry end inner wall is the venturi section, and venturi section rear is provided with the valve clack, and valve shaft front half section is located to the valve clack cover, and valve shaft rear end cover is equipped with draft tube, its characterized in that: a sealing ring is arranged on the inner wall of the valve body behind the venturi section, a front bushing is arranged in the center of the sealing ring, the front bushing is sleeved at the front end of the valve shaft, a rear bushing is sleeved at the rear end of the valve shaft, and a guide cylinder is sleeved outside the rear bushing; a front bearing mounting groove is formed in the inner wall of the front bushing outwards, a front bearing is arranged in the front bearing mounting groove, a bearing retainer ring is arranged at the front end of the front bearing mounting groove, a front dust-proof groove is formed between the rear end of the front bearing and the valve shaft, and a front dust-proof ring is embedded in the front dust-proof groove; the rear bearing installation groove is outwards seted up to the back bush inner wall, sets up the rear bearing in the rear bearing installation groove, and rear bearing mounting groove rear end sets up the back retaining ring, sets up back dust groove between back bush front end and the valve shaft, and the back dust ring is prevented to the embedding back in the back dust groove.
Description
Technical Field
The utility model relates to an axial flow type check valve, in particular to an axial flow type check valve with a silt prevention function, and belongs to the field of valves for pipeline medium transportation.
Background
The axial flow check valve has the characteristics of strong flow capacity, small flow resistance, no blockage when opened and closed, no impact when closed, reliable sealing and the like, and is widely applied to various industries. Water is a valuable resource essential for human production and life, but its naturally occurring state does not completely meet the needs of human beings. Hydraulic engineering is required to control the flow of water, and to regulate and distribute the amount of water, which requires the use of various valves, among which axial flow check valves, during transportation.
Traditional axial-flow check valve is owing to not set up dustproof silt structure of preventing, and impurity such as dust, silt in the medium is on the valve shaft is attached to, and in the valve shaft motion process brought other parts with impurity, the wearing and tearing of valve shaft and other parts are accelerated as the abrasive material to impurity, influence valve opening and closing speed, block even and lose efficacy. The valve can not be normally closed or opened, so that the upstream and downstream devices are affected and even stopped, and the loss is huge.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following solutions:
an axial flow check valve with a silt prevention function comprises a valve body, wherein the front end of the valve body is an inlet end, the rear end of the valve body is an outlet end, the inner wall of the inlet end of the valve body is a Venturi section, a valve clack is arranged behind the Venturi section and sleeved on the front half section of a valve shaft, a guide cylinder is sleeved at the rear end of the valve shaft, a sealing ring is arranged on the inner wall of the valve body behind the Venturi section, a front bushing is arranged in the center of the sealing ring and sleeved on the front end of the valve shaft, a rear bushing is sleeved on the rear end of the valve shaft, and the guide cylinder is sleeved outside the rear bushing; a front bearing mounting groove is formed in the inner wall of the front bushing outwards, a front bearing is arranged in the front bearing mounting groove, a bearing retainer ring is arranged at the front end of the front bearing mounting groove, a front dust-proof groove is formed between the rear end of the front bearing and the valve shaft, and a front dust-proof ring is embedded in the front dust-proof groove; the rear bearing installation groove is outwards seted up to the back bush inner wall, sets up the rear bearing in the rear bearing installation groove, and rear bearing mounting groove rear end sets up the back retaining ring, sets up back dust groove between back bush front end and the valve shaft, and the back dust ring is prevented to the embedding back in the back dust groove.
Furthermore, a fairing is sleeved at the front end of the front bushing, and a tail cover is sleeved at the rear end of the rear bushing.
Furthermore, holes communicated with the medium are formed in the fairing and the tail cover.
The utility model has the beneficial effects that:
1. all be provided with bearing and dust ring in preceding bush and the back bush, valve shaft, bearing, dust ring constitute relatively closed region with preceding bush or back bush, and the dust ring has the cleaning effect to the valve shaft in the valve shaft motion process, avoids impurity such as dust, silt to be attached to the valve shaft surface to avoid impurity to get into between valve shaft and preceding bush (or the back bush) as the wearing and tearing of abrasive material acceleration valve shaft and preceding bush (or back bush).
2. The valve shaft directly contacts with the bearing and the dustproof ring, and does not contact with the front bushing and the rear bushing, so that the contact area is small, the friction force in the movement process of the valve shaft is reduced, and the action reliability of the valve is ensured.
3. The holes are formed in the fairing and the tail cover, the media in the fairing and the tail cover are communicated with the media in the pipeline, the media are prevented from forming pressure difference with the pipeline media in the fairing (or the tail cover), and the action reliability of the valve is further ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure at I in FIG. 1;
FIG. 3 is a schematic view of the structure II in FIG. 1.
The device comprises a valve body 1, a guide shell 1-1, a valve clack 2, a valve shaft 3, a Venturi section 4, a sealing ring 5, a fairing 6, a tail cover 7, a front bushing 8, a rear bushing 9, a front bearing 10, a front bearing retainer 11 and a front dust ring 12; 13. a rear bearing; 14. a rear bearing retainer ring; 15. and a rear dust ring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1: as shown in figure 1 of the drawings, in which,
an axial flow type check valve with a silt prevention function comprises a valve body 1, wherein the front end of the valve body 1 is an inlet end, the rear end of the valve body 1 is an outlet end, the inner wall of the inlet end of the valve body 1 is a Venturi section 4, a valve clack 2 is arranged behind the Venturi section 4, the valve clack 2 is sleeved on the front half section of a valve shaft 3, a guide cylinder 1-1 is sleeved at the rear end of the valve shaft 3, a sealing ring 5 is arranged on the inner wall of the valve body 1 behind the Venturi section 4, a front bushing 8 is arranged in the center of the sealing ring 5, the front bushing 8 is sleeved at the front end of the valve shaft 3, a rear bushing 9 is sleeved at the rear end of the valve shaft 3, and the guide cylinder 1-1 is sleeved outside the rear bushing 9; a front bearing mounting groove is formed in the inner wall of the front bushing 8 outwards, a front bearing 10 is arranged in the front bearing mounting groove, a front bearing retainer ring 11 is arranged at the front end of the front bearing mounting groove, a front dust-proof groove is formed between the rear end of the front bearing 10 and the valve shaft 3, and a front dust-proof ring 12 is embedded in the front dust-proof groove; the inner wall of the rear bushing 9 is outwards provided with a rear bearing installation groove, a rear bearing 9 is arranged in the rear bearing installation groove, the rear end of the rear bearing installation groove is provided with a rear bearing retainer ring 14, a rear dust-proof groove is arranged between the front end of the rear bushing 9 and the valve shaft 3, and a rear dust-proof ring 15 is embedded in the rear dust-proof groove.
The front end of the front bushing 8 is sleeved with a fairing 6, and the rear end of the rear bushing 9 is sleeved with a tail cover 7. Holes communicated with the medium are formed in the fairing 6 and the tail cover 7.
All be provided with bearing and dust ring in preceding bush 8 and the back bush 9, valve shaft 3, bearing, dust ring and preceding bush 8 or back bush 9 constitute relative closed area, and the dust ring has the cleaning effect to valve shaft 3 in the valve shaft 3 motion process, avoids impurity such as dust, silt to be attached to the surface of valve shaft 3 to avoid impurity to get into between valve shaft 3 and preceding bush 8 (or back bush 9) as the wearing and tearing of abrasive material acceleration valve shaft 3 and preceding bush 8 (or back bush 9).
The valve shaft 3 is directly contacted with the bearing and the dustproof ring, but not contacted with the front bushing 8 and the rear bushing 9, the contact area is small, the friction force in the movement process of the valve shaft 3 is reduced, and the reliability of the valve action is ensured.
The fairing 6 and the tail cover 7 are provided with holes to communicate the media in the fairing 6 and the tail cover 7 with the media in the pipeline, so that the media are prevented from forming pressure difference with the pipeline media in the fairing 6 (or the tail cover 7), and the action reliability of the valve is further ensured.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. It is obvious that the present invention is not limited to the above embodiments, but many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (3)
1. The utility model provides an axial-flow type check valve with prevent silt function, includes the valve body, and the valve body front end is the entry end, and the valve body rear end is the exit end, and valve body entry end inner wall is the venturi section, and venturi section rear is provided with the valve clack, and valve shaft front half section is located to the valve clack cover, and valve shaft rear end cover is equipped with draft tube, its characterized in that: a sealing ring is arranged on the inner wall of the valve body behind the venturi section, a front bushing is arranged in the center of the sealing ring, the front bushing is sleeved at the front end of the valve shaft, a rear bushing is sleeved at the rear end of the valve shaft, and a guide cylinder is sleeved outside the rear bushing; a front bearing mounting groove is formed in the inner wall of the front bushing outwards, a front bearing is arranged in the front bearing mounting groove, a bearing retainer ring is arranged at the front end of the front bearing mounting groove, a front dust-proof groove is formed between the rear end of the front bearing and the valve shaft, and a front dust-proof ring is embedded in the front dust-proof groove; the rear bearing installation groove is outwards seted up to the back bush inner wall, sets up the rear bearing in the rear bearing installation groove, and rear bearing mounting groove rear end sets up the back retaining ring, sets up back dust groove between back bush front end and the valve shaft, and the back dust ring is prevented to the embedding back in the back dust groove.
2. An axial flow check valve with silt prevention as set forth in claim 1, wherein: the front end of the front bushing is sleeved with a fairing, and the rear end of the rear bushing is sleeved with a tail cover.
3. An axial flow check valve with silt prevention as set forth in claim 2, wherein: and holes communicated with the medium are formed in the fairing and the tail cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023261289.2U CN215410378U (en) | 2020-12-30 | 2020-12-30 | Axial flow type check valve with silt prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023261289.2U CN215410378U (en) | 2020-12-30 | 2020-12-30 | Axial flow type check valve with silt prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215410378U true CN215410378U (en) | 2022-01-04 |
Family
ID=79638003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023261289.2U Active CN215410378U (en) | 2020-12-30 | 2020-12-30 | Axial flow type check valve with silt prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215410378U (en) |
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2020
- 2020-12-30 CN CN202023261289.2U patent/CN215410378U/en active Active
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