CN217583351U - High-frequency pulse cut-off valve actuating mechanism - Google Patents
High-frequency pulse cut-off valve actuating mechanism Download PDFInfo
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- CN217583351U CN217583351U CN202220304983.8U CN202220304983U CN217583351U CN 217583351 U CN217583351 U CN 217583351U CN 202220304983 U CN202220304983 U CN 202220304983U CN 217583351 U CN217583351 U CN 217583351U
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Abstract
The utility model discloses a high frequency pulse trip valve actuating mechanism, including push rod, lower apron, cylinder, piston and upper cover plate, the piston setting in the cylinder and with cylinder sliding connection, the apron setting down at the piston lower extreme and with cylinder sealing connection, the upper cover plate setting in the upper end of cylinder and with cylinder sealing connection, the one end of piston stretch into down the apron and fixed with the push rod, be equipped with the passway hole on the upper cover plate, be equipped with the passway hole on the lower apron, two passways are respectively through trachea and two-position five-way solenoid valve intercommunication. The utility model provides a high frequency pulse trip valve actuating mechanism, control system adopt two-position five-way solenoid valve, open and close fast through solenoid valve control flap, make the valve accomplish the time of a switching action and be less than 250ms or 500ms.
Description
Technical Field
The utility model belongs to the technical field of pulse trip valve technique and specifically relates to a high frequency pulse trip valve actuating mechanism.
Background
The pulse cut-off valve is an important device of a filter element online back-flushing cleaning system of a filter (ceramic high-temperature and high-pressure fly ash filter) in the chemical industry, and is used for providing pulse air flow for the filter element of the fly ash filter. The pulse air flow generated by the pulse cut-off valve can blow off solid impurities attached to the ceramic filter, so that the whole system is prevented from being out of order due to the precipitation of the solid impurities.
The high-frequency switch pulse cut-off valve is mainly used for dust removal systems in the industries of chemical engineering, cement, refining and the like, can perform switching action within a very short time according to the caliber, and due to the limitation of a system process, the time for completing one switching action of the valve is short and is generally less than 250ms or 500ms, and the conventional execution structure basically cannot meet the time. Secondly, because the service temperature of the valve is 250-300 ℃, the cut-off valve on the market adopts a hard sealing structure at the temperature and adopts a quick-opening structure. After the structure is used in a long-period quick switch, the leakage grade of the valve cannot meet the field process requirement.
Disclosure of Invention
The utility model discloses an overcome not enough among the prior art, provide a high frequency pulse trip valve actuating mechanism, control system adopts two-position five-way solenoid valve, opens and closes fast through solenoid valve control flap, makes the time that the valve accomplished the switching action be less than 250ms or 500ms.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a high-frequency pulse trip valve actuating mechanism, includes the push rod, lower cover plate, the cylinder, piston and upper cover plate, the piston setting in the cylinder and with cylinder sliding connection, lower cover plate set up at the piston lower extreme and with cylinder sealing connection, the upper cover plate setting in the upper end of cylinder and with cylinder sealing connection, the one end of piston stretches into down the apron and fixed with the push rod, is equipped with the access hole on the upper cover plate, is equipped with the access hole on the lower cover plate, two access holes communicate through trachea and two-position five-way solenoid valve respectively.
In the technical scheme, the control system adopts a two-position five-way electromagnetic valve, and the electromagnetic valve and the actuating mechanism adopt a direct connection mode. The electromagnetic valve receives an electric signal of the SIS or DCS control system, so that the valve is controlled to be opened and closed quickly, and the time for completing one opening and closing action of the valve is less than 250ms or 500ms.
Preferably, the spring is arranged between the upper cover plate and the piston, and two ends of the spring are respectively connected with the piston and the upper cover plate. And the upper cover plate and the piston are provided with accommodating grooves for accommodating the spring. The actuating mechanism adopts a double-acting structure, and a group of springs are designed at the closing position, so that the impact force generated when the valve is opened can be effectively buffered.
Preferably, the lower end of the push rod is provided with a threaded hole, the threaded hole is provided with a stud bolt, and the push rod is detachably connected with the valve rod through the stud bolt. The valve rod of the valve is detachably connected with the actuating mechanism, and can be connected with the actuating mechanism according to different requirements and connecting sizes of the valve.
Preferably, a first sealing ring is arranged on the outer side wall of the piston.
Preferably, the number of the first sealing rings is two, the two first sealing rings are arranged side by side along the axial direction, the first sealing rings are lip-shaped sealing rings, and the lip openings of the two first sealing rings are opposite. The structure can effectively play a role in sealing performance, and the sealing performance of the cylinder can be well guaranteed under the condition of fast operation and long-period operation.
Preferably, a second sealing ring is arranged between the lower cover plate and the push rod, and a third sealing ring is arranged between the push rod and the piston. The structure can increase the sealing performance of the actuator.
Preferably, the lower cover plate is provided with a guide sleeve, and the guide sleeve is sleeved outside the push rod. The structure can increase the stability of the push rod operation.
The beneficial effects of the utility model are that: (1) The electromagnetic valve and the executing mechanism adopt a direct connection mode, and receive an electric signal of the SIS or DCS control system through the electromagnetic valve, so that the valve is controlled to be opened and closed quickly, and the time for completing one opening and closing action of the valve is less than 250ms or 500ms. (2) By adopting a double-acting structure, a group of springs are designed at the closing position, so that the impact force generated when the valve is opened can be effectively buffered. (3) The sealing performance can be effectively achieved, and the sealing performance can be well guaranteed under the condition that the air cylinder runs fast and can run for a long period.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: push rod 1, screw hole 1.1, lower cover plate 2, cylinder 3, piston 4, upper cover plate 5, access hole 6, spring 7, first sealing washer 8, second sealing washer 9, third sealing washer 10, uide bushing 11.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1, a high-frequency pulse cut-off valve actuating mechanism, including push rod 1, lower cover plate 2, cylinder 3, piston 4, upper cover plate 5 and spring 7, piston 4 set up in cylinder 3 and with cylinder 3 sliding connection, lower cover plate 2 sets up at the piston 4 lower extreme, upper cover plate 5 sets up the upper end at cylinder 3, upper cover plate 5 sets up down apron 2 and passes through bolt clamping cylinder 3, be equipped with the sealing washer between lower cover plate 2 and the cylinder 3, be equipped with the sealing washer between upper cover plate 5 and the cylinder 3, the one end of piston 4 stretches into lower cover plate 2 and is fixed with push rod 1, be fixed with uide bushing 11 on the lower cover plate 2, uide bushing 11 cover is established in the push rod 1 outside, push rod 1 and uide bushing 11 sliding connection. The upper cover plate 5 is provided with a channel hole 6, the lower cover plate 2 is provided with a channel hole 6, and the two channel holes 6 are respectively communicated with the two-position five-way electromagnetic valve through air pipes. Be equipped with the holding tank that is used for holding spring 7 on apron and the piston 4, spring 7 sets up between upper cover plate 5 and piston 4, and piston 4 and upper cover plate 5 are connected respectively to the both ends of spring 7. The lower end of the push rod 1 is provided with a threaded hole 1.1, the threaded hole 1.1 is provided with a stud bolt, and the push rod 1 is detachably connected with the valve rod through the stud bolt.
Be equipped with two first sealing washer 8 on the lateral wall of piston 4, two first sealing washers 8 set up side by side along the axial, and first sealing washer 8 is lip seal, and the lip opening of two first sealing washers 8 is opposite. A second sealing ring 9 is arranged between the lower cover plate 2 and the push rod 1, and a third sealing ring 10 is arranged between the push rod 1 and the piston 4.
In the technical scheme, the control system adopts a two-position five-way electromagnetic valve, and the electromagnetic valve and the actuating mechanism adopt a direct connection mode. The electromagnetic valve receives an electric signal of the SIS or DCS control system, so that the valve is controlled to be opened and closed quickly, and the time for completing one opening and closing action of the valve is less than 250ms or 500ms. The actuating mechanism adopts a double-acting structure, and a group of springs 7 are designed at the closing position, so that the impact force generated when the valve is opened can be effectively buffered. A plurality of sealing performance can be effectively played, and the sealing performance can be well guaranteed under the long-period operation of the air cylinder under the condition of rapid operation.
The beneficial effects of the utility model are that: (1) The electromagnetic valve and the executing mechanism adopt a direct connection mode, and receive an electric signal of the SIS or DCS control system through the electromagnetic valve, so that the valve is controlled to be opened and closed quickly, and the time for completing one opening and closing action of the valve is less than 250ms or 500ms. (2) By adopting a double-acting structure, a group of springs 7 are designed at the closing position, so that the impact force generated when the valve is opened can be effectively buffered. (3) The sealing performance can be effectively achieved, and the sealing performance can be well guaranteed under the condition that the air cylinder runs quickly and can run for a long period.
Claims (7)
1. The utility model provides a high-frequency pulse trip valve actuating mechanism, characterized by, including the push rod, lower cover plate, the cylinder, piston and upper cover plate, the piston setting in the cylinder and with cylinder sliding connection, lower cover plate setting at the piston lower extreme and with cylinder sealing connection, the upper cover plate setting in the upper end of cylinder and with cylinder sealing connection, the one end of piston stretches into down the apron and fixed with the push rod, is equipped with the passway hole on the upper cover plate, is equipped with the passway hole on the lower cover plate, two passway holes communicate with two-position five-way solenoid valve through trachea and two respectively.
2. The high-frequency pulse cut-off valve actuating mechanism of claim 1, further comprising a spring, wherein the spring is arranged between the upper cover plate and the piston, and two ends of the spring are respectively connected with the piston and the upper cover plate.
3. A high-frequency pulse cut-off valve actuating mechanism as claimed in claim 1, wherein the lower end of the push rod is provided with a threaded hole, the threaded hole is provided with a stud bolt, and the push rod is detachably connected with the valve rod through the stud bolt.
4. A high frequency pulse cut-off valve actuator according to claim 1, 2 or 3, wherein the outer side wall of the piston is provided with a first sealing ring.
5. A high-frequency pulse cut-off valve actuator as claimed in claim 4, wherein the number of the first sealing rings is two, the two first sealing rings are arranged side by side along the axial direction, the first sealing rings are lip-shaped sealing rings, and lip openings of the two first sealing rings are opposite.
6. A high frequency pulse cut-off valve actuating mechanism according to claim 1, 2 or 3, wherein a second sealing ring is arranged between the lower cover plate and the push rod, and a third sealing ring is arranged between the push rod and the piston.
7. A high frequency pulse cut-off valve actuating mechanism as claimed in claim 1, 2 or 3, wherein the lower cover plate is provided with a guide sleeve, and the guide sleeve is sleeved outside the push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220304983.8U CN217583351U (en) | 2022-02-15 | 2022-02-15 | High-frequency pulse cut-off valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220304983.8U CN217583351U (en) | 2022-02-15 | 2022-02-15 | High-frequency pulse cut-off valve actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217583351U true CN217583351U (en) | 2022-10-14 |
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ID=83538083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220304983.8U Active CN217583351U (en) | 2022-02-15 | 2022-02-15 | High-frequency pulse cut-off valve actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217583351U (en) |
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2022
- 2022-02-15 CN CN202220304983.8U patent/CN217583351U/en active Active
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