CN111396568A

CN111396568A - Improved poppet valve device

Info

Publication number: CN111396568A
Application number: CN202010273637.3A
Authority: CN
Inventors: 王帅兵; 娄彦龙
Original assignee: Shanghai Carbon Soot Energy Service Co ltd
Current assignee: Shanghai Carbon Soot Energy Service Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-07-10

Abstract

The invention discloses an improved poppet valve device which comprises an air cylinder, a mounting plate, a sealed cabin, a fixed clamping rod, a fixed cross rod, a compression ring, sealing filler, a compression ring groove, an air inlet pipe, a compressed air pipe, a two-way electromagnetic valve, a valve shaft, a valve plate, a valve seat, an exhaust pipe, a base and a two-position five-way electromagnetic valve, wherein the two ends of the air cylinder control the opening and closing state of a poppet valve by controlling the two-position five-way electromagnetic valve; a high-pressure air inlet high-pressure air release hole and/or an air release ring are/is formed in the circumferential direction of the periphery of the valve seat, a sealing vent pipe is arranged on the air inlet pipe close to the valve seat and corresponds to the high-pressure air inlet hole, and waste gas in the valve seat isolation air inlet pipe is improved through high-pressure gas so that the sealing performance is improved. The device improves the sealing property and stability of the valve shaft by arranging the pressure ring, the pressure ring groove and the sealing filler; the rotation of the valve shaft is prevented through the fixed clamping rod and the fixed cross rod, and the sealing and isolating effect on waste gas is improved through local positive pressure high-pressure gas at the valve seat.

Description

Improved poppet valve device

Technical Field

The invention relates to an exhaust control technology, in particular to an improved poppet valve device.

Background

Poppet valves are a common type of valve device used in exhaust treatment systems. However, in the prior art, because of the hard sealing structure of the conventional poppet valve of the organic waste gas heat accumulating type incineration device, a small gap exists between the valve plate and the valve seat of the poppet valve, so that the air tightness of the poppet valve is not high, and particularly after the system runs for a period of time, the valve plate is frequently attached to the valve seat, the valve plate is easily deformed and rotated, the gap between the valve plate and the valve seat is increased, so that the air tightness of the poppet valve is further reduced, and waste gas can directly escape to the atmosphere through the gap, so that the treatment efficiency of the whole set of environmental protection facility is reduced, and the atmospheric pollution is increased;

therefore, how to improve the sealing and stability performance of poppet valves by improving the structure of poppet valves is a problem to be solved in the art.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, it is an object of the present invention to provide an improved poppet valve assembly which addresses the above-mentioned problems.

The purpose of the invention is realized by adopting the following technical scheme:

the utility model provides an improved generation poppet valve device, includes cylinder, mounting panel, sealed cabin, fixed clamping bar, fixed horizontal pole, clamping ring, sealing filler, pressing ring groove, intake pipe, compressed air pipe, two-way solenoid valve, valve shaft, valve plate, disk seat, blast pipe, base, two-position five-way solenoid valve, the cylinder passes through the mounting panel to be fixed at the sealed cabin top, sealed cabin, intake pipe, blast pipe, base top-down set gradually and fixed connection, mutual welded fastening, the bottom of the piston rod of cylinder stretches into in the sealed cabin, the top of valve shaft is passed the upper wall of intake pipe stretches into in the sealed cabin, just the lower extreme of the piston rod in the cylinder carries out thread fixed connection with the valve shaft top, the bottom fixed connection of valve shaft sets up on the valve plate in the intake pipe. Two-position five-way electromagnetic valves are arranged between compressed air pipes at the top and the bottom of the cylinder and an externally connected high-pressure air source, and the opening and closing states of the poppet valve are controlled by changing the positions of compressed air entering and exiting the cylinder through controlling the two-position five-way electromagnetic valves; the high-pressure air inlet high-pressure air release hole and/or the air release ring are/is formed in the circumferential direction of the outer peripheral portion of the valve seat, a sealing vent pipe is arranged on the air inlet pipe close to the valve seat and corresponds to the high-pressure air inlet, a two-way electromagnetic valve is arranged between a high-pressure air source and the sealing vent pipe, and waste gas in the valve seat isolation air inlet pipe is improved through high-pressure gas so as to improve the sealing performance.

Preferably, when the two-position five-way electromagnetic valve controls compressed air to enter from the top of the cylinder, a piston rod of the cylinder drives the valve shaft to move downwards, the valve plate is attached to the valve seat, and the poppet valve is in a closed state; when the two-position five-way electromagnetic valve controls compressed air to enter from the bottom of the air cylinder, the piston rod of the air cylinder drives the valve shaft to move upwards, the valve plate leaves the valve seat, and the lifting valve is in an opening state.

Preferably, when the poppet valve is closed, the two-way electromagnetic valve is opened, compressed air is introduced to the valve seat, and the valve seat area is in a positive pressure state relative to the inner cavity of the air inlet pipe, so that waste gas in the air inlet pipe is prevented from entering the exhaust pipe through a gap between the valve plate and the valve seat, and the sealing performance of the poppet valve is improved.

Preferably, close on and be on a parallel with in the sealed cabin the piston rod sets up fixed clamping bar body of rod middle part is seted up spacing spout along the body of rod, threaded connection fixed connection is passed through with the partial upper portion that the valve shaft is located the sealed cabin to the one end of fixed horizontal pole, and the other end setting of fixed horizontal pole is in the spacing spout of fixed clamping bar simultaneously to make fixed horizontal pole up-and-down motion in fixed clamping bar, avoided the rotary motion of valve shaft to lead to the gap increase between valve plate and the valve shaft, thereby promoted the sealing performance of poppet valve.

Preferably, set up in the middle part that sealed cabin and intake pipe border on the department the clamping ring groove, the clamping ring passes through the bolt fastening in the clamping ring groove, sets up between clamping ring and clamping ring groove the packings, the valve shaft link up clamping ring and the vertical setting in clamping ring groove are in sealed cabin and intake pipe.

Preferably, the air inlet pipe, the exhaust pipe and the adjacent part of the base are fixed through welding, the lower end of the piston rod is in threaded connection with the top end of the valve shaft, the bottom end of the valve shaft is fixed with the valve plate through a bolt, and one end of the fixed cross rod is fixedly connected with the upper part of the valve shaft through threads.

Compared with the prior art, the invention has the beneficial effects that: the compression ring, the compression ring groove and the sealing filler are arranged, so that the sealing property and the stability of the valve shaft are better; the rotation of the valve shaft is prevented through the fixed clamping rod and the fixed cross rod, so that the service life and the sealing property are improved; through the local positive pressure high-pressure gas at the valve seat, the sealing and isolating effect on waste gas is improved.

Drawings

Fig. 1 is a schematic view of an improved poppet valve assembly of the present invention.

In the figure: 1. a cylinder; 2. mounting a plate; 3. sealing the cabin; 4. fixing the clamping rod; 5. fixing the cross bar; 6. pressing a ring; 7. sealing and filling; 8. pressing the ring groove; 9. an air inlet pipe; 10. a compressed air pipe; 11. a two-way solenoid valve; 12. a valve shaft; 13. a valve plate; 14. a valve seat; 15. an exhaust pipe; 16. a base; 17. a two-position five-way solenoid valve; 18. a piston rod; 19. the vent pipe is sealed.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

An improved poppet valve device is shown in figure 1 and comprises an air cylinder 1, a mounting plate 2, a sealed cabin 3, a fixed clamping rod 4, a fixed cross rod 5, a pressing ring 6, sealing filler 7, a pressing ring groove 8, an air inlet pipe 9, a compressed air pipe 10, a two-way electromagnetic valve 11, a valve shaft 12, a valve plate 13, a valve seat 14, an exhaust pipe 15, a base 16 and a two-position five-way electromagnetic valve 17.

Connection relation: cylinder 1 passes through mounting panel 2 to be fixed at 3 tops of sealed cabin, sealed cabin 3, intake pipe 9,

blast pipe

15, 16 top-down of base set gradually and welded fixed connection, the bottom of the piston rod 18 of cylinder 1 stretches into in the sealed cabin 3, the top of valve shaft 12 is passed the upper wall of intake pipe 9 stretches into in the sealed cabin 3, just thread fixed connection is carried out on the lower extreme of the piston rod 18 in the cylinder 1 and the 12 tops of valve shaft, the bottom fixed connection of valve shaft 12 sets up on the valve plate 13 in intake pipe 9.

Close on and be on a parallel with in the sealed cabin 3 piston rod 18 sets up fixed clamping bar 4 body of rod middle part is seted up the spacing spout along the body of rod, the one end of fixed horizontal pole 5 and the partial upper portion that valve shaft 12 is located sealed cabin 3 pass through screw thread fixed connection, and the other end setting of fixed horizontal pole 5 is in the spacing spout of fixed clamping bar 4 simultaneously to make fixed horizontal pole 5 up-and-down motion in fixed clamping bar 4, avoided the rotary motion of valve shaft 12 to lead to the gap increase between valve plate 13 and valve shaft 12, thereby promoted the sealing performance of poppet valve.

Further, set up in the middle part that sealed capsule 3 and intake pipe 9 border on the department the clamping ring groove 8, clamping ring 6 passes through the bolt fastening in clamping ring groove 8, sets up between clamping ring 6 and clamping ring groove 8 packings 7, valve shaft 12 link up clamping ring 6 and the vertical setting in sealed capsule 3 and intake pipe 9 in clamping ring groove 8.

The sealing packing 7 may be various sealing rings adapted to the ring pressing groove 8 and the valve shaft 12.

Two-position five-way electromagnetic valves 17 are arranged between compressed air pipes at the top and the bottom of the air cylinder 1 and an external high-pressure air source, and the positions of compressed air entering and exiting the air cylinder are changed by controlling the two-position five-way electromagnetic valves 17 so as to control the opening and closing states of the poppet valves; a high-pressure air inlet high-pressure air release hole and/or an air release ring 20 is formed in the circumferential direction of the outer circumferential portion of the valve seat 14, a sealing vent pipe 19 is arranged on the air inlet pipe 9 close to the valve seat 14 corresponding to the high-pressure air inlet hole, a two-way electromagnetic valve 11 is arranged between a high-pressure air source and the sealing vent pipe 19, and waste gas in the air inlet pipe 9 is isolated through the high-pressure air to improve the sealing performance.

Linkage sealing control: when the two-position five-way electromagnetic valve 17 controls compressed air to enter from the top of the cylinder 1, the piston rod 18 of the cylinder 1 drives the valve shaft 12 to move downwards, the valve plate 13 is attached to the valve seat 14, and the poppet valve is in a closed state; when the two-position five-way electromagnetic valve 17 controls compressed air to enter from the bottom of the cylinder 1, the piston rod 18 of the cylinder 1 drives the valve shaft 12 to move upwards, the valve plate 13 leaves the valve seat 14, and the lift valve is in an open state.

Further, when the poppet valve is closed, the two-way solenoid valve 11 is opened, and compressed air is introduced to the valve seat 14, so that the valve seat area is in a positive pressure state relative to the inner cavity of the air inlet pipe 9, thereby preventing waste gas in the air inlet pipe 9 from entering the exhaust pipe 15 through a gap between the valve plate 13 and the valve seat 14, and improving the sealing performance of the poppet valve.

Exhaust gas flow path: when the poppet valve is opened, gas enters the valve seat 14 and the exhaust pipe 15 from the gas inlet pipe 9 to subsequent equipment, and when the poppet valve is closed, gas is stopped from entering the valve seat 14 and the exhaust pipe 15 from the gas inlet pipe 9.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An improved poppet valve assembly, comprising: comprises an air cylinder (1), a mounting plate (2), a sealed cabin (3), a fixed clamping rod (4), a fixed cross rod (5), an air inlet pipe (9), a compressed air pipe (10), a two-way electromagnetic valve (11), a valve shaft (12), a valve plate (13), a valve seat (14), an exhaust pipe (15), a base (16) and a two-position five-way electromagnetic valve (17), wherein the air cylinder (1) is fixed at the top of the sealed cabin (3) through the mounting plate (2), the sealed cabin (3), the air inlet pipe (9), the exhaust pipe (15) and the base (16) are sequentially arranged and fixedly connected from top to bottom, the bottom end of a piston rod (18) of the air cylinder (1) extends into the sealed cabin (3), the top end of the valve shaft (12) penetrates through the upper wall of the air inlet pipe (9) and extends into the sealed cabin (3), and the lower end of the piston rod (18) in the air, the bottom end of the valve shaft (12) is fixedly connected to a valve plate (13) arranged in the air inlet pipe (9);

two-position five-way electromagnetic valves (17) are arranged between compressed air pipes at the top and the bottom of the air cylinder (1) and an external high-pressure air source, and the opening and closing states of the lift valve are controlled by changing the positions of compressed air entering and exiting the air cylinder through controlling the two-position five-way electromagnetic valves (17); a high-pressure air inlet high-pressure air release hole and/or an air release ring are/is formed in the circumferential direction of the outer peripheral portion of the valve seat (14), a sealing vent pipe (19) is arranged on the air inlet pipe (9) of the valve seat (14) corresponding to the high-pressure air inlet, a two-way electromagnetic valve (11) is arranged between a high-pressure air source and the sealing vent pipe (19), and waste gas in the valve seat (14) isolation air inlet pipe (9) is improved through high-pressure gas so as to improve sealing performance.

2. The improved poppet valve apparatus as defined in claim 1, wherein: when a two-position five-way electromagnetic valve (17) controls compressed air to enter from the top of the air cylinder (1), a piston rod (18) of the air cylinder (1) drives the valve shaft (12) to move downwards, the valve plate (13) is attached to the valve seat (14), and the poppet valve is in a closed state; when the two-position five-way electromagnetic valve (17) controls compressed air to enter from the bottom of the air cylinder (1), a piston rod (18) of the air cylinder (1) drives the valve shaft (12) to move upwards, the valve plate (13) leaves the valve seat (14), and the poppet valve is in an open state.

3. The improved poppet valve apparatus as defined in claim 2, wherein: when the poppet valve is closed, the two-way electromagnetic valve (11) is opened, compressed air is introduced to the valve seat (14), and the valve seat area is in a positive pressure state relative to the inner cavity of the air inlet pipe (9), so that waste gas in the air inlet pipe (9) is prevented from entering the exhaust pipe (15) through a gap between the valve plate (13) and the valve seat (14), and the sealing performance of the poppet valve is improved.

4. The improved poppet valve apparatus as defined in claim 1, wherein: close on and be on a parallel with in sealed cabin (3) piston rod (18) set up fixed clamping bar (4) body of rod middle part is seted up along the body of rod spacing spout, the one end and the partial upper portion fixed connection that valve shaft (12) are located sealed cabin (3) of fixed horizontal pole (5), the other end setting of fixed horizontal pole (5) is in the spacing spout of fixed clamping bar (4) simultaneously to make fixed horizontal pole (5) up-and-down motion in fixed clamping bar (4).

5. The improved poppet valve apparatus as defined in claim 1, wherein: set up pressing ring groove (8) at the middle part that sealed cabin (3) and intake pipe (9) border on the department, a clamping ring (6) pass through the bolt fastening in pressing ring groove (8), set up gland packing (7) between clamping ring (6) and pressing ring groove (8), valve shaft (12) link up clamping ring (6) and the vertical setting in sealed cabin (3) and intake pipe (9) of clamping ring groove (8).

6. The improved poppet valve apparatus as defined in claim 1, wherein: the joint of the air inlet pipe (9), the air outlet pipe (15) and the base (16) is fixed by welding, the lower end of the piston rod (18) is in threaded connection with the top end of the valve shaft (12), and the bottom end of the valve shaft (12) is fixed with the valve plate (13) by a bolt.

7. The improved poppet valve apparatus as defined in claim 4, wherein: one end of the fixed cross rod (5) is fixedly connected with the upper part of the valve shaft (12) through threads.