CN210531644U

CN210531644U - Poppet valve

Info

Publication number: CN210531644U
Application number: CN201921582388.5U
Authority: CN
Inventors: 康乐; 杨柳胜
Original assignee: Beijing Pafeinuo Precision Machinery Co ltd
Current assignee: Beijing Pafeinuo Precision Machinery Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-05-15
Anticipated expiration: 2029-09-20

Abstract

The utility model relates to a poppet valve, which comprises a valve seat, a clapboard, a valve core, a valve cover, a baffle plate, a spring, a stand column and a pulling and pressing plate; the two sides of the valve seat are respectively communicated with an inlet and an outlet; the partition plate is horizontally arranged in the valve seat and divides the valve seat into an upper cavity and a lower cavity; a rubber pad is arranged below the valve core and can block or open the through hole on the partition plate; the valve cover is arranged on the top opening of the valve seat; the separation blade is sleeved on one end of the valve core, which penetrates out of the valve cover, and is fixedly connected with the valve cover; the spring is sleeved on the valve core, and the lower end of the spring is supported on the baffle plate; the upright post is vertically fixed at the top of the valve cover; the lower end of the pulling and pressing plate is hinged to the top end of the upright post, and the lower part of the pulling and pressing plate extends downwards in an inclined mode to form an extending part; the cover plate is fixed at the top end of the valve core, the extension part is hinged with the top of the cover plate, and the upper end of the spring is abutted against the lower part of the cover plate; when the spring is in a normal state, a gap is reserved between the rubber pad and the via hole. The utility model discloses a institutional advancement has slowed down the impact of case and baffle for the rubber pad of case department is not fragile.

Description

Poppet valve

Technical Field

The utility model relates to a valve, in particular to poppet valve.

Background

The lift valve is mainly used in boiler soot blower and hearth soot blower systems.

The current poppet valve mainly comprises a valve seat, a partition plate, a valve core, a valve cover and a linear driving piece; wherein the valve seat is of a top opening structure, and the two sides of the valve seat are respectively communicated with an inlet and an outlet; the partition board is horizontally arranged in the valve seat, the valve seat is divided into an upper cavity and a lower cavity, an inlet and an outlet are respectively communicated with the upper cavity and the lower cavity, and the middle part of the partition board is provided with a through hole for medium to flow; the valve core is vertically arranged, and a rubber pad is arranged below the valve core and can plug or open a through hole in the partition plate; the valve cover is arranged on the top opening of the valve seat; the linear driving piece is arranged on the valve cover, is connected with the top end of the valve core and is used for vertically driving the valve core to close and open the via hole in the partition plate. The linear driving part is generally a cylinder, an oil cylinder, an electric push rod and the like.

The prior poppet valve has simple execution structure and quick response; however, when the valve core is used, the valve core on the valve core is in hard impact on the partition plate for sealing, and a rubber pad serving as a main sealing element is subjected to large impact force and is frequent in the process, so that the problem of breakage is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a poppet valve, it has slowed down the impact of case and baffle through institutional advancement for the rubber pad of case department is not fragile.

The above object of the present invention can be achieved by the following technical solutions: a poppet valve comprises a valve seat, a partition plate, a valve core, a valve cover, a baffle plate, a spring, an upright post and a pulling and pressing plate; the valve seat is of a top opening structure, and the two sides of the valve seat are respectively communicated with an inlet and an outlet; the partition board is horizontally arranged in the valve seat, the valve seat is divided into an upper cavity and a lower cavity, an inlet and an outlet are respectively communicated with the upper cavity and the lower cavity, and the middle part of the partition board is provided with a through hole for medium to flow; the valve core is vertically arranged, and a rubber pad is arranged below the valve core and can plug or open a through hole in the partition plate; the valve cover is arranged on the top opening of the valve seat; the separation blade is sleeved on one end of the valve core, which penetrates out of the valve cover, and is fixedly connected with the valve cover; the spring is sleeved on the valve core, and the lower end of the spring is supported on the baffle plate; the upright post is vertically fixed at the top of the valve cover; the lower end of the pulling and pressing plate is hinged to the top end of the upright post, and the lower part of the pulling and pressing plate extends downwards in an inclined mode to form an extending part; the cover plate is fixed at the top end of the valve core, the extension part is hinged with the top of the cover plate, and the upper end of the spring is abutted against the lower part of the cover plate; when the spring is in a normal state, a gap is reserved between the rubber pad and the via hole.

By adopting the technical scheme, when the valve is used, the actuating element pulls the upper end of the pulling and pressing plate, the pulling and pressing plate starts to swing to drive the extending part to push the valve core downwards, and finally the rubber gasket is blocked on the through hole to close the valve; the downward impact force of case can be slowed down to the in-process spring, and then can play the guard action to case itself and rubber pad. After the improvement, compared with the existing poppet valve, the rubber pad is not easy to be damaged.

The utility model discloses further set up to: the valve core comprises an extrusion column and an operating rod; the extrusion column is vertically arranged, the diameter of the extrusion column is larger than that of the through hole, the rubber pad is fixed on the end face of the lower end of the extrusion column, and the axis of the extrusion column is overlapped with that of the through hole; the operating rod is vertically arranged, the axis of the operating rod is superposed with the axis of the extrusion column, and the lower end of the operating rod is fixedly connected to the top of the extrusion column; the upper end of the operating rod penetrates through the valve cover.

By adopting the technical scheme, the valve core is simple in structure and simple to operate.

The utility model discloses further set up to: the extrusion column is in a conical structure with a large upper part and a small lower part, and the inner wall of the valve seat is matched with the extrusion column.

By adopting the technical scheme, the extrusion column can utilize the bottom and the side wall to plug the through hole, and the sealing effect is better.

The utility model discloses further set up to: an annular caulking groove is formed in the periphery of the extrusion column, and a rubber ring is embedded into the caulking groove.

Through adopting above-mentioned technical scheme, the leakproofness of extrusion post can further be promoted to the rubber circle.

The utility model discloses further set up to: the outside of the top opening of the valve seat is provided with an external thread, and the valve cover is provided with an internal thread matched with the valve cover.

Through adopting above-mentioned technical scheme for have better leakproofness between valve gap and the valve seat.

The utility model discloses further set up to: the top of the valve cover is provided with a boss, the center of the boss is provided with a hole for the operating rod to penetrate out, and the baffle sheet is fixedly connected on the boss.

By adopting the technical scheme, the boss has a certain guiding function on the operating rod, so that the operating rod can move up and down more smoothly; meanwhile, the sealing performance of the valve cover and the operating rod is improved.

The utility model discloses further set up to: two connecting lug plates are oppositely arranged at the top of the cover plate, the end part of the extension part is positioned between the two lug plates, the end part is correspondingly provided with a lug hole, and a pin shaft is matched in the lug hole and the connecting lug plates.

Through adopting above-mentioned technical scheme, the hinge structure of extension and cover plate is simple, makes the pulling and pressing board can be smooth exert the strength on the cover plate.

To sum up, the utility model discloses following beneficial effect has:

1. when the valve is used, the actuating member pulls the upper end of the pulling and pressing plate, the pulling and pressing plate starts to swing, the extending part is driven to push the valve core downwards, and finally the rubber gasket is blocked on the via hole, so that the valve is closed; in the process, the spring can reduce the downward impact force of the valve core, so that the valve core and the rubber pad can be protected; after improvement, compared with the existing poppet valve, the rubber pad is not easy to be damaged;

2. the extrusion post toper sets up and the setting of rubber circle, makes the extrusion post can utilize bottom and lateral wall to carry out the shutoff to the via hole, and sealed effect is better.

Drawings

FIG. 1 is a schematic perspective view of a poppet valve;

fig. 2 is a cross-sectional view of a poppet valve.

In the figure, 1, valve seat; 10. an inlet; 11. an outlet; 2. a partition plate; 20. a via hole; 3. a valve core; 30. extruding the column; 300. a rubber ring; 31. a rubber pad; 32. an operating lever; 4. a valve cover; 40. a boss; 5. a baffle plate; 6. a spring; 7. a column; 8. pulling the pressing plate; 80. an extension portion; 9. a cover plate; 90. connecting the ear plates; 91. and (7) a pin shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 1 and 2, the poppet valve comprises a valve seat 1, a partition plate 2, a valve core 3, a valve cover 4, a baffle 5, a spring 6, an upright post 7 and a pull pressure plate 8; the valve seat 1 is of a top opening structure, and the two sides of the valve seat are respectively communicated with an inlet 10 and an outlet 11; the partition plate 2 is horizontally arranged in the valve seat 1, the valve seat 1 is divided into an upper cavity and a lower cavity, the inlet 10 and the outlet 11 are respectively communicated with the upper cavity and the lower cavity, and the middle part of the partition plate 2 is provided with a through hole 20 for medium to flow; the valve core 3 is vertically arranged, and a rubber pad 31 is arranged below the valve core and can plug or open the through hole 20 on the partition plate 2; the valve cover 4 is arranged on the top opening of the valve seat 1; the baffle 5 is sleeved on one end of the valve core 3, which penetrates out of the valve cover 4, and is fixedly connected with the valve cover 4; the spring 6 is sleeved on the valve core 3, and the lower end of the spring is supported on the baffle 5; the upright post 7 is vertically fixed on the top of the valve cover 4; the lower end of the pulling and pressing plate 8 is hinged to the top end of the upright post 7, and the lower part of the pulling and pressing plate 8 extends downwards in an inclined mode to form an extending part 80; the cover plate 9 is fixed at the top end of the valve core 3, the extension part 80 is hinged with the top of the cover plate 9, and the upper end of the spring 6 is abutted against the lower part of the cover plate 9; when the spring 6 is in a normal state, a gap is left between the rubber pad 31 and the via hole 20.

When the valve is used, the actuating member pulls the upper end of the pull pressing plate 8, the pull pressing plate 8 starts to swing, the extending part 80 is driven to push the valve element 3 downwards, and finally the rubber pad 31 is blocked on the through hole 20, so that the valve is closed; the spring 6 can slow down the downward impact force of the valve core 3 in the process, and further can protect the valve core 3 and the rubber pad 31. After improvement, compared with the existing poppet valve, the rubber pad 31 is not easy to be damaged.

The valve core 3 comprises a pressing column 30 and an operating rod 32; the extrusion column 30 is vertically arranged, the diameter of the extrusion column 30 is larger than that of the through hole 20, the rubber pad 31 is fixed on the lower end face of the extrusion column 30, and the axis of the extrusion column 30 is overlapped with that of the through hole 20; the operating rod 32 is vertically arranged, the axis of the operating rod is overlapped with the axis of the extrusion column 30, and the lower end of the operating rod 32 is fixedly connected to the top of the extrusion column 30; the upper end of the operating rod 32 penetrates through the valve cover 4.

The valve core 3 has simple structure and simple operation.

The extrusion column 30 is in a conical structure with a large upper part and a small lower part, and the inner wall of the valve seat 1 is matched with the extrusion column 30. After the arrangement, the extrusion column 30 can utilize the bottom and the side wall to plug the through hole 20, and the sealing effect is better. An annular caulking groove is formed on the periphery of the extrusion column 30, and a rubber ring 300 is embedded in the caulking groove. The rubber ring 300 is provided to further improve the sealing performance of the compression column 30.

The outside of the top opening of the valve seat 1 is provided with an external thread, and the valve cover 4 is provided with an internal thread matched with the external thread. This provides a better seal between the valve cover 4 and the valve seat 1.

The top of the valve cover 4 is provided with a boss 40, the center of the boss 40 is provided with a hole for the operating rod 32 to penetrate through, and the baffle 5 is fixedly connected on the boss 40. The boss 40 has a certain guiding function on the operating rod 32, so that the up-and-down movement of the operating rod 32 is smoother; and improves the sealing performance at the valve cover 4 and the operating rod 32.

Two connecting lug plates 90 are oppositely arranged at the top of the housing plate 9, the end part of the extension part 80 is positioned between the two lug plates 90, lug holes are correspondingly formed in the end part, and a pin shaft 91 is matched in the lug holes and the connecting lug plates 90.

The hinge structure of the extension 80 and the hood plate 9 is simple so that the pulling and pressing plate 8 can smoothly apply force to the hood plate 9.

The embodiment of this embodiment is the utility model discloses preferred embodiment is not according to this restriction the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A poppet valve, characterized by: comprises a valve seat (1), a clapboard (2), a valve core (3), a valve cover (4), a baffle (5), a spring (6), an upright post (7) and a pulling and pressing plate (8); the valve seat (1) is of a top opening structure, and the two sides of the valve seat are respectively communicated with an inlet (10) and an outlet (11); the partition plate (2) is horizontally arranged in the valve seat (1), the valve seat (1) is divided into an upper cavity and a lower cavity, an inlet (10) and an outlet (11) are respectively communicated with the upper cavity and the lower cavity, and the middle part of the partition plate (2) is provided with a through hole (20) for medium to flow through; the valve core (3) is vertically arranged, and a rubber pad (31) is arranged below the valve core and can plug or open a through hole (20) in the partition plate (2); the valve cover (4) is arranged on the top opening of the valve seat (1); the baffle sheet (5) is sleeved on one end of the valve core (3) penetrating out of the valve cover (4) and is fixedly connected with the valve cover (4); the spring (6) is sleeved on the valve core (3) and the lower end of the spring is supported on the baffle plate (5); the upright post (7) is vertically fixed on the top of the valve cover (4); the lower end of the pull pressing plate (8) is hinged to the top end of the upright post (7), and the lower part of the pull pressing plate (8) extends downwards in an inclined manner to form an extending part (80); the cover plate (9) is fixed at the top end of the valve core (3), the extension part (80) is hinged with the top of the cover plate (9), and the upper end of the spring (6) is abutted against the lower part of the cover plate (9); when the spring (6) is in a normal state, a gap is reserved between the rubber pad (31) and the via hole (20).

2. The poppet valve of claim 1, wherein: the valve core (3) comprises a squeezing column (30) and an operating rod (32); the extrusion column (30) is vertically arranged, the diameter of the extrusion column (30) is larger than that of the through hole (20), the rubber pad (31) is fixed on the lower end face of the extrusion column (30), and the axis of the extrusion column (30) is overlapped with that of the through hole (20); the operating rod (32) is vertically arranged, the axis of the operating rod coincides with the axis of the extrusion column (30), and the lower end of the operating rod (32) is fixedly connected to the top of the extrusion column (30); the upper end of the operating rod (32) penetrates through the valve cover (4).

3. The poppet valve of claim 2, wherein: the extrusion column (30) is in a conical structure with a large upper part and a small lower part, and the inner wall of the valve seat (1) is matched with the extrusion column (30).

4. The poppet valve of claim 3, wherein: an annular caulking groove is formed in the periphery of the extrusion column (30), and a rubber ring (300) is embedded in the caulking groove.

5. The poppet valve of claim 1, wherein: the outer side of the top opening of the valve seat (1) is provided with an external thread, and the valve cover (4) is provided with an internal thread matched with the external thread.

6. The poppet valve of claim 1, wherein: a boss (40) is arranged at the top of the valve cover (4), a hole for the operating rod (32) to penetrate through is formed in the center of the boss (40), and the blocking piece (5) is fixedly connected to the boss (40).

7. The poppet valve of claim 1, wherein: two connecting lug plates (90) are oppositely arranged at the top of the cover plate (9), the end part of the extension part (80) is positioned between the two lug plates, lug holes are correspondingly formed in the end part, and a pin shaft (91) is matched in the lug holes and the connecting lug plates (90).