CN220016273U - Double-piston double-acting cylinder - Google Patents
Double-piston double-acting cylinder Download PDFInfo
- Publication number
- CN220016273U CN220016273U CN202321232834.6U CN202321232834U CN220016273U CN 220016273 U CN220016273 U CN 220016273U CN 202321232834 U CN202321232834 U CN 202321232834U CN 220016273 U CN220016273 U CN 220016273U
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- piston
- end cover
- cylinder
- double
- rod
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- 230000009977 dual effect Effects 0.000 claims 5
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model relates to a double-piston double-acting cylinder which comprises a cylinder body, a piston rod, a sliding sleeve, an upper piston and a lower piston, wherein the cylinder body is provided with an upper containing cavity and a lower containing cavity, the cylinder body is respectively provided with an upper air hole and a lower air hole which are communicated with the upper containing cavity and the lower containing cavity, the cylinder body is connected with the piston rod in a sliding manner, the piston rod is connected with the sliding sleeve in a sliding manner, the piston rod is connected with the upper piston, the upper piston is connected with the upper containing cavity in a sliding manner, the sliding sleeve is connected with the lower piston, and the lower piston is connected with the lower containing cavity in a sliding manner. The utility model aims to solve the problem that when an air source fails due to faults, a standby air source forces an upper piston to drive a piston rod to move downwards through an upper air hole, so that an air cylinder is closed urgently, and the air cylinder cannot be closed when the air source fails.
Description
Technical Field
The utility model relates to the technical field of pneumatic valves, in particular to a double-piston double-acting cylinder.
Background
The cylinder gate valve is a widely applied control part, the piston rod is driven to move mainly through air pressure, and the cylinder gate valve is mainly used for opening and closing in a pipeline system, however, when an air source fails in a traditional cylinder structure, the piston rod cannot be controlled to close the pipeline system, and the emergency treatment pipeline system is lack of functions under emergency conditions.
Disclosure of Invention
In order to overcome the defects of the background technology, the utility model adopts the following technical scheme: the utility model provides a double-piston double-acting cylinder, includes cylinder block, piston rod, sliding sleeve, goes up piston and lower piston, the cylinder block is equipped with and holds the chamber and hold the chamber down, and the cylinder block be equipped with respectively with hold the chamber, hold the upper air hole, the lower air hole of chamber intercommunication down, cylinder block sliding connection has the piston rod, piston rod sliding connection has the sliding sleeve, the piston rod is connected with the piston, and goes up piston sliding connection in holding the chamber, the sliding sleeve is connected with down the piston, and lower piston sliding connection holds the chamber under.
Further, the cylinder body comprises an upper end cover, an upper cylinder sleeve, a middle end cover, a lower cylinder sleeve and a lower end cover which are sequentially connected from top to bottom, the cylinder body is positioned at the upper cylinder sleeve to form an upper containing cavity, and the cylinder body is positioned at the lower cylinder sleeve to form a lower containing cavity.
Further, the lower end cover is provided with screws distributed circumferentially, and the upper end cover is connected with the lower end cover through screw threads.
Further, the upper end cover is provided with an upper air hole communicated with the upper containing cavity, and the lower end cover is provided with a lower air hole communicated with the lower containing cavity.
Further, the piston rod comprises a main rod and an auxiliary rod which are connected, the main rod is slidably connected to the lower end cover, and the auxiliary rod is slidably connected to the upper end cover.
Further, the mobile jib threaded connection has last piston, and sliding sleeve sliding connection is in the mobile jib, the sliding sleeve has lower piston through nut threaded connection, the both ends of sliding sleeve butt in last piston and lower end cover respectively.
Further, the middle end cover is provided with a through hole, and the through hole is connected with a sliding sleeve in a sliding manner.
Further, the upper end cover is provided with a limit column corresponding to the upper piston.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the air source fails due to faults, the standby air source forces the upper piston to drive the piston rod to move downwards through the upper air hole, so that the air cylinder is closed in an emergency, and the problem that the air cylinder cannot be closed when the air source fails is solved.
2. When the auxiliary rod is pulled up, the piston rod moves upwards relative to the sliding sleeve, so that the upper piston moves to the top of the upper containing cavity, the piston rod is pulled up completely, the stroke of relative pneumatic control is longer, and the device is suitable for conditions during installation or maintenance of the air cylinder.
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a cross-sectional view of the piston rod of the present utility model after it has been moved down;
FIG. 3 is a cross-sectional view of the piston rod of the present utility model fully moved up;
wherein: 1-cylinder block, 2-piston rod, 3-sliding sleeve, 4-upper piston, 5-lower piston, 6-upper cavity, 7-lower cavity, 8-upper air hole, 9-lower air hole, 11-upper end cover, 12-upper cylinder liner, 13-middle end cover, 14-lower cylinder liner, 15-lower end cover, 16-screw rod, 17-main rod, 18-auxiliary rod, 19-through hole and 20-limit column;
Detailed Description
As shown in fig. 1 and 2, this embodiment provides a dual-piston double-acting cylinder, which comprises a cylinder body 1, a piston rod 2, a sliding sleeve 3, an upper piston 4 and a lower piston 5, wherein the cylinder body 1 is provided with an upper containing cavity 6 and a lower containing cavity 7, the cylinder body 1 is respectively provided with an upper air hole 8 and a lower air hole 9 which are communicated with the upper containing cavity 6 and the lower containing cavity 7, the cylinder body 1 is slidably connected with the piston rod 2, the piston rod 2 is slidably connected with the sliding sleeve 3, the piston rod 2 is connected with the upper piston 4, the upper piston 4 is slidably connected with the upper containing cavity 6, the sliding sleeve 3 is connected with the lower piston 5, and the lower piston 5 is slidably connected with the lower containing cavity 7.
In the utility model, the depth of the upper containing cavity 6 is higher than that of the lower containing cavity 7, the air source drives the piston rod 2 to move up and down in the lower containing cavity 7 through the lower air hole 9, and the stroke of the piston rod 2 is shorter at the moment, so that the closing and starting operation time is saved; when the air source fails due to faults, the standby air source forces the upper piston 4 to drive the piston rod 2 to move downwards through the upper air hole 8, so that the air cylinder is closed in an emergency, and the problem that the air cylinder cannot be closed when the air source fails is solved.
In this embodiment, the cylinder block 1 includes an upper end cover 11, an upper cylinder liner 12, a middle end cover 13, a lower cylinder liner 14 and a lower end cover 15 sequentially connected from top to bottom, the cylinder block 1 is located at the upper cylinder liner 12 to form an upper cavity 6, and the cylinder block 1 is located at the lower cylinder liner 14 to form a lower cavity 7. The lower end cover 15 is provided with screws 16 distributed circumferentially, and the upper end cover 11 is connected to the lower end cover 15 through the screws 16 in a threaded manner. Specifically, the upper end cover 11 is provided with an upper air hole 8 communicated with the upper containing cavity 6, and the lower end cover 15 is provided with a lower air hole 9 communicated with the lower containing cavity 7.
In the utility model, the middle end cover 13 is respectively clamped with the upper end cover 11 and the lower end cover 15 through the upper cylinder sleeve 12 and the lower cylinder sleeve 14 and is clamped by the screw 16 to form the cylinder body 1, and the installation mode is simple and convenient.
In this embodiment, the piston rod 2 includes a main rod 17 and a sub rod 18 connected to each other, the main rod 17 is slidably connected to the lower end cap 15, and the sub rod 18 is slidably connected to the upper end cap 11. Specifically, the upper piston 4 is connected with the main rod 17 through threads, the sliding sleeve 3 is connected with the main rod 17 in a sliding manner, the lower piston 5 is connected with the sliding sleeve 3 through threads of nuts, and two ends of the sliding sleeve 3 are respectively abutted to the upper piston 4 and the lower end cover 15. Specifically, the middle end cover 13 is provided with a through hole 19, and the through hole 19 is connected with the sliding sleeve 3 in a sliding manner.
Referring to fig. 3, in the present utility model, the auxiliary rod 18 is exposed along the upper end cover 11, when the air source fails, the auxiliary rod 18 can control the up-down movement of the main rod 17, and the position of the main rod 17 relative to the cylinder block 1 can be determined by the exposed length of the auxiliary rod 18; when the auxiliary rod 18 is pulled up, the piston rod 2 moves upwards relative to the sliding sleeve 3, so that the upper piston 4 moves to the top of the upper containing cavity 6, and when the piston rod 2 moves up completely, the stroke of relative pneumatic control is longer, and the pneumatic control device is suitable for conditions during installation or maintenance of the cylinder.
In this embodiment, the upper end cap 11 is provided with a stopper post 20 corresponding to the upper piston 4.
In the present utility model, the main rod 17 is prevented from striking the upper end cap 11 by the stopper post 20 to maintain structural stability.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. The utility model provides a double-piston double-acting cylinder, its characterized in that, including cylinder block (1), piston rod (2), sliding sleeve (3), go up piston (4) and lower piston (5), cylinder block (1) is equipped with and holds chamber (6) and hold chamber (7) down, and cylinder block (1) be equipped with respectively with hold chamber (6), hold last gas pocket (8) of chamber (7) intercommunication down, lower gas pocket (9), cylinder block (1) sliding connection has piston rod (2), piston rod (2) sliding connection has sliding sleeve (3), piston rod (2) are connected with piston (4), and go up piston (4) sliding connection in holding chamber (6), sliding sleeve (3) are connected with down piston (5), and lower piston (5) sliding connection holds chamber (7) down.
2. A dual piston, double acting cylinder as defined in claim 1 wherein: the cylinder body (1) comprises an upper end cover (11), an upper cylinder sleeve (12), a middle end cover (13), a lower cylinder sleeve (14) and a lower end cover (15) which are sequentially connected from top to bottom, the cylinder body (1) is positioned at the upper cylinder sleeve (12) to form an upper containing cavity (6), and the cylinder body (1) is positioned at the lower cylinder sleeve (14) to form a lower containing cavity (7).
3. A dual piston double acting cylinder as defined in claim 2 wherein: the lower end cover (15) is provided with screws (16) distributed circumferentially, and the upper end cover (11) is connected to the lower end cover (15) through the screws (16) in a threaded mode.
4. A double-piston, double-acting cylinder as claimed in claim 3, wherein: the upper end cover (11) is provided with an upper air hole (8) communicated with the upper containing cavity (6), and the lower end cover (15) is provided with a lower air hole (9) communicated with the lower containing cavity (7).
5. A double-piston double-acting cylinder according to claim 2 or 3 or 4, characterized in that: the piston rod (2) comprises a main rod (17) and a secondary rod (18) which are connected, the main rod (17) is slidably connected to the lower end cover (15), and the secondary rod (18) is slidably connected to the upper end cover (11).
6. A dual piston, double acting cylinder as defined in claim 5 wherein: the novel piston is characterized in that the main rod (17) is in threaded connection with the upper piston (4), the sliding sleeve (3) is in sliding connection with the main rod (17), the sliding sleeve (3) is in threaded connection with the lower piston (5) through a nut, and two ends of the sliding sleeve (3) are respectively abutted to the upper piston (4) and the lower end cover (15).
7. A dual piston, double acting cylinder as defined in claim 6 wherein: the middle end cover (13) is provided with a through hole (19), and the through hole (19) is connected with a sliding sleeve (3) in a sliding way.
8. A dual piston double acting cylinder as defined in claim 2 wherein: the upper end cover (11) is provided with a limit column (20) corresponding to the upper piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232834.6U CN220016273U (en) | 2023-05-18 | 2023-05-18 | Double-piston double-acting cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232834.6U CN220016273U (en) | 2023-05-18 | 2023-05-18 | Double-piston double-acting cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220016273U true CN220016273U (en) | 2023-11-14 |
Family
ID=88685107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321232834.6U Active CN220016273U (en) | 2023-05-18 | 2023-05-18 | Double-piston double-acting cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220016273U (en) |
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2023
- 2023-05-18 CN CN202321232834.6U patent/CN220016273U/en active Active
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