CN217653295U - Lifting check valve - Google Patents
Lifting check valve Download PDFInfo
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- CN217653295U CN217653295U CN202221917520.5U CN202221917520U CN217653295U CN 217653295 U CN217653295 U CN 217653295U CN 202221917520 U CN202221917520 U CN 202221917520U CN 217653295 U CN217653295 U CN 217653295U
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- clack
- check valve
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- valve clack
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Abstract
The application discloses a lifting check valve, which relates to the field of check valves and comprises a valve body, a valve clack and a valve cover, wherein a water inlet channel and a water outlet channel are formed in the valve body; a sealing ring is fixedly arranged on the valve clack, a ring groove is arranged on the side wall of the water outlet channel, and the ring groove is arranged around the periphery of the valve seat; when the valve clack falls into the valve seat, the sealing ring is embedded into the ring groove. The application has the effect of reducing medium backflow.
Description
Technical Field
The application relates to the field of check valves, in particular to a lifting check valve.
Background
The check valve is a valve whose opening and closing piece is a circular valve clack and can be operated by its self-weight and medium pressure to block back flow of medium. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type.
In the related art, the conventional lift check valve is similar to a stop valve in structure and only lacks a valve rod for driving a valve clack. The media flows in from the inlet end and out from the outlet end. The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. The common valve clack is arranged in a cylindrical mode, and when the valve clack falls into the valve seat, the valve is closed.
In view of the above related technologies, the inventor believes that the mode of closing the valve by matching the cylindrical valve flap with the valve seat is single in structure and poor in sealing performance, so that the valve flap is jacked up due to the impact of the medium at the outlet end in the medium conveying process, and the medium flows backwards.
SUMMERY OF THE UTILITY MODEL
In order to improve the condition that the medium is easy to flow backwards, the application provides a lifting check valve.
The application provides a lift check valve adopts following technical scheme:
a lifting check valve comprises a valve body, a valve clack and a valve cover, wherein a water inlet channel and a water outlet channel are formed in the valve body, the valve clack is arranged on the valve cover in a sliding mode along the vertical direction, the water inlet channel is communicated with the water outlet channel, a valve seat is formed at the communicated position, and the valve clack is matched with the valve seat; the valve clack is fixedly provided with a sealing ring, the side wall of the water outlet channel is provided with a ring groove, and the ring groove is arranged around the periphery of the valve seat; when the valve clack falls into the valve seat, the sealing ring is embedded into the ring groove.
Through adopting above-mentioned technical scheme, when the valve was closed, the valve clack fell into the disk seat in, and meanwhile, the sealing ring embedding annular. Therefore, the sealing ring is matched with the annular groove, and a circle of sealing layer is formed on the periphery of the valve clack, so that the condition that the medium in the water outlet channel impacts the valve clack can be reduced, and the condition of medium backflow is reduced.
Preferably, be provided with the sealing washer on the annular diapire, just one side that the sealing washer deviates from the annular diapire butts with the sealing ring.
Through adopting above-mentioned technical scheme, when the valve was closed, the sealing washer sealed the clearance between sealing ring and the annular bottom wall to help further reducing the condition that the medium impacted the valve clack in the water outlet channel.
Preferably, the upper side of the valve clack is provided with an arc-shaped guide surface, and the highest position of the arc-shaped guide surface is positioned in the center of the valve clack.
By adopting the technical scheme, when the medium in the water outlet channel flows back, the medium is guided to flow to the upper side of the valve clack by the arc-shaped guide surface, so that the valve clack can be tightly pressed in the valve seat by the medium in the water outlet channel, the condition that the valve clack is vibrated due to the medium in the water inlet channel impacting the valve clack is reduced, and the condition that the valve clack is damaged due to vibration is facilitated; meanwhile, the arc-shaped guide surface can increase the surface area of the upper surface of the valve flap, so that the amount of the medium flowing to the upper side of the valve flap can be increased, and the force acting on the valve flap can be increased.
Preferably, the valve seat is provided with a groove matched with the lower side of the valve clack.
Through adopting above-mentioned technical scheme, the setting of recess can improve the cooperation degree of valve clack and disk seat to help further reducing the condition that the interior medium of water outlet channel strikes the valve clack and its jack-up.
Preferably, a sliding groove is formed in the valve cover in the vertical direction, a sliding rod is arranged in the sliding groove in a sliding manner, and the lower end of the sliding rod extends to the outer side of the sliding groove and is fixedly connected with the valve clack; the sliding rod is sleeved with a spring, and two ends of the spring are respectively abutted to the valve clack and the valve cover.
Through adopting above-mentioned technical scheme, when the unable jack-up valve clack that makes progress of pressure of medium in the water outlet course, the valve clack falls into the disk seat downwards under the effect of spring in, realizes closing of valve, sets up from this, can improve the speed that the valve was closed.
Preferably, the valve cover is in threaded connection with an adjusting rod along the vertical direction, and the sliding groove is formed in the adjusting rod.
By adopting the technical scheme, when the check valve function or the valve clack cannot be jacked up by medium pressure in the water outlet channel is not needed, the adjusting rod can be screwed to move upwards, so that the sliding rod is driven to move upwards, the valve clack moves upwards, and the valve is opened, so that the applicability of the lifting check valve is promoted.
Preferably, the upper end of the adjusting rod is fixedly connected with a handle, and the handle is positioned above the valve cover.
Through adopting above-mentioned technical scheme, twist with the help of the handle and move the regulation pole, help promoting to twist the convenience of moving the regulation pole.
Preferably, a filter screen is arranged at the inlet of the water inlet channel.
Through adopting above-mentioned technical scheme, when the medium flowed into the inlet channel, the impurity in the medium can be strained to the filter screen to help promoting the cleanliness of flowing out the medium through the check valve.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the valve is closed, the valve clack falls into the valve seat, and meanwhile, the sealing ring is embedded into the ring groove. According to the arrangement, the sealing ring is matched with the annular groove, and a circle of sealing layer is formed on the peripheral side of the valve clack, so that the condition that a medium in the water outlet channel impacts the valve clack can be reduced, and the condition of medium backflow is reduced;
2. when the medium in the water outlet channel flows back, the medium is guided to flow to the upper side of the valve clack by the arc-shaped guide surface, so that the valve clack can be pressed in the valve seat by the medium in the water outlet channel, the condition that the valve clack is vibrated due to the medium in the water inlet channel impacting the valve clack is reduced, and the condition that the valve clack is damaged due to vibration is facilitated; meanwhile, the arc-shaped guide surface can increase the surface area of the upper surface of the sealing ring, so that the amount of the medium flowing to the upper side of the valve clack can be increased, and the force acting on the valve clack is increased;
3. the arrangement of the groove can improve the matching degree of the valve clack and the valve seat, so that the situation that the medium in the water outlet channel impacts the valve clack to jack the valve clack is further reduced.
Drawings
FIG. 1 is an axial view of the present embodiment, which mainly shows the overall structure of the lift check valve;
FIG. 2 is a sectional view of the embodiment mainly embodying the structure of the lift check valve;
fig. 3 is a partial enlarged view of the valve flap structure of the present embodiment at a.
Reference numerals are as follows: 1. a valve body; 11. a water inlet channel; 12. a water outlet channel; 13. a filter screen; 14. a valve seat; 141. a groove; 15. a ring groove; 151. a seal ring; 2. a valve cover; 21. a threaded hole; 3. adjusting a rod; 31. a handle; 32. a sliding groove; 4. a slide bar; 41. a limiting ring; 42. a spring; 5. a valve flap; 51. and (6) sealing rings.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a lift check valve.
The embodiment is as follows:
referring to fig. 1 and 2, the lift check valve includes a valve body 1 and a bonnet 2, the bonnet 2 being fixedly provided at an upper side of the valve body 1. The valve body 1 is provided with a water inlet channel 11 and a water outlet channel 12, and the water inlet channel 11 is communicated with the water outlet channel 12. A filter screen 13 is arranged at the inlet of the water inlet channel 11. A valve seat 14 is arranged in the valve body 1, and the valve seat 14 is located at the communication position of the water inlet channel 11 and the water outlet channel 12.
Referring to fig. 2, specifically, a threaded hole 21 is formed in the bonnet 2 in the vertical direction, and the adjustment rod 3 is screwed into the threaded hole 21. The handle 31 is welded at the upper end of the adjusting rod 3, and the handle 31 is positioned at the upper side of the valve cover 2. The adjusting rod 3 is coaxially provided with a sliding groove 32, and the lower end wall of the sliding groove 32 is provided with a through hole in a penetrating manner. A sliding rod 4 is arranged in the sliding groove 32 in a sliding manner, and the lower end of the sliding rod 4 penetrates through the through hole and extends to the outer side of the adjusting rod 3. The upper end of the slide bar 4 is welded with a limiting ring 41, and the diameter of the limiting ring 41 is larger than the aperture of the through hole. The lower end of the sliding rod 4 is coaxially welded with a valve clack 5, and the valve clack 5 is matched with the valve seat 14. The sliding rod 4 is sleeved with a spring 42, and two ends of the spring 42 are respectively abutted against the valve cover 2 and the valve clack 5.
Referring to fig. 3, in order to reduce the situation that the medium in the water outlet channel 12 impacts the valve flap 5 to jack it up, a groove 141 adapted to the lower side of the valve flap 5 is formed on the valve seat 14. Thereby helping to promote the fit of the flap 5 to the valve seat 14.
Referring to fig. 2 and 3, a sealing ring 51 is integrally formed on the valve flap 5, and an arc-shaped guide surface is provided on the upper side of the valve flap 5, and the highest point of the arc-shaped guide surface is located on the sliding rod 4. The valve seat 14 is provided with a ring groove 15 matched with the sealing ring 51, the bottom wall of the ring groove 15 is adhered with a sealing ring 151, and the upper side of the sealing ring 151 is abutted against the sealing ring 51.
The implementation principle of this application embodiment's over-and-under type check valve does: when the valve is closed, the flap 5 drops into the valve seat 14, while the sealing ring 51 engages in the annular groove 15. With this arrangement, the sealing ring 51 is fitted to the annular groove 15 to form a single sealing layer around the valve flap 5, thereby reducing the possibility of the medium in the spout 12 striking the valve flap 5 and contributing to the reduction of the backflow of the medium.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an over-and-under type check valve, includes valve body (1), valve clack (5) and valve gap (2), inlet channel (11) and water outlet channel (12) have been seted up on valve body (1), valve clack (5) slide along vertical direction and set up on valve gap (2), its characterized in that: the water inlet channel (11) is communicated with the water outlet channel (12), a valve seat (14) is formed at the communication position, and the valve clack (5) is matched with the valve seat (14); a sealing ring (51) is fixedly arranged on the valve flap (5), a ring groove (15) is formed in the side wall of the water outlet channel (12), and the ring groove (15) is arranged around the periphery of the valve seat (14); when the valve flap (5) is dropped into the valve seat (14), the sealing ring (51) engages in the annular groove (15).
2. The poppet check valve as recited in claim 1, wherein: be provided with sealing washer (151) on annular (15) diapire, just one side that sealing washer (151) deviate from annular (15) diapire and sealing ring (51) butt.
3. The lift check valve of claim 1, wherein: the valve is characterized in that an arc-shaped guide surface is arranged on the upper side of the valve clack (5), and the highest position of the arc-shaped guide surface is located in the center of the valve clack (5).
4. The lift check valve of claim 1, wherein: the valve seat (14) is provided with a groove (141) matched with the lower side of the valve clack (5).
5. The poppet check valve as recited in claim 1, wherein: a sliding groove (32) is formed in the valve cover (2) in the vertical direction, a sliding rod (4) is arranged in the sliding groove (32) in a sliding manner, and the lower end of the sliding rod (4) extends to the outer side of the sliding groove (32) and is fixedly connected with the valve clack (5); the sliding rod (4) is sleeved with a spring (42), and two ends of the spring (42) are respectively abutted to the valve clack (5) and the valve cover (2).
6. The lift check valve of claim 5, wherein: the valve cover (2) is connected with an adjusting rod (3) along the vertical direction through threads, and the sliding groove (32) is formed in the adjusting rod (3).
7. The poppet check valve as recited in claim 6, wherein: the upper end of the adjusting rod (3) is fixedly connected with a handle (31), and the handle (31) is positioned above the valve cover (2).
8. The poppet check valve as recited in claim 1, wherein: a filter screen (13) is arranged at the inlet of the water inlet channel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221917520.5U CN217653295U (en) | 2022-07-25 | 2022-07-25 | Lifting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221917520.5U CN217653295U (en) | 2022-07-25 | 2022-07-25 | Lifting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217653295U true CN217653295U (en) | 2022-10-25 |
Family
ID=83686193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221917520.5U Active CN217653295U (en) | 2022-07-25 | 2022-07-25 | Lifting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217653295U (en) |
-
2022
- 2022-07-25 CN CN202221917520.5U patent/CN217653295U/en active Active
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