CN213512323U - Emergency cut-off valve pneumatic control mechanism externally connected to oil discharge valve - Google Patents
Emergency cut-off valve pneumatic control mechanism externally connected to oil discharge valve Download PDFInfo
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- CN213512323U CN213512323U CN202022576318.8U CN202022576318U CN213512323U CN 213512323 U CN213512323 U CN 213512323U CN 202022576318 U CN202022576318 U CN 202022576318U CN 213512323 U CN213512323 U CN 213512323U
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Abstract
The utility model relates to an air control mechanism of an emergency cut-off valve externally connected with an oil discharge valve, which comprises a flange plate and an air control joint integrally arranged at the outer side of the flange plate; an air passage is arranged in the pneumatic control joint, a piston is arranged in the air passage and is connected with a shifting plate arranged in the flange plate, a spring is arranged on the outer side of the piston, and an air inlet, an air outlet and an air outlet which are communicated with the air passage are arranged on the pneumatic control joint; the piston moves outwards, the air outlet is communicated with the exhaust port, the piston moves inwards, and the air outlet is communicated with the air inlet. The utility model discloses simple structure can the direct mount rather than the cooperation on the oil discharge valve to the realization avoids appearing the condition that the oil leaked to the self-closing control of emergency cut-off valve, improves the security performance.
Description
Technical Field
The utility model belongs to the technical field of tank wagon emergency cut-off valve gas accuse, concretely relates to external emergency cut-off valve pneumatic control mechanism who connects in the fuel discharge valve.
Background
The tank wagon is at the in-process of loading or unloading, need open oil discharge valve and emergency cut-off valve, and after loading or unloading are accomplished, because the oil discharge valve directly links to each other with external oil pipe, can directly close when dismantling external oil pipe, and emergency cut-off valve direct mount is on the jar body of tank wagon, need operate solitary pneumatic switch or rotate the handle of its top just can close it, the condition that the emergency cut-off valve forgot to close often appears like this, extremely easily cause the condition of oil leakage because the vehicle jolts at the tank wagon in-process, the security performance is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an external urgent cut-off valve pneumatic control mechanism in oil discharge valve to solve and forget the problem of closing because of urgent oil discharge valve independent control.
The utility model discloses an external quick action emergency valve pneumatic control mechanism who is in unload valve realizes like this:
an air control mechanism of an emergency cut-off valve externally connected with an oil discharge valve comprises a flange plate and an air control joint integrally arranged on the outer side of the flange plate;
an air passage is arranged in the pneumatic control joint, a piston is arranged in the air passage and is connected with a shifting plate arranged in the flange plate, a spring is arranged on the outer side of the piston, and an air inlet, an air outlet and an air outlet which are communicated with the air passage are arranged on the pneumatic control joint;
the piston moves outwards, the air outlet is communicated with the exhaust port, the piston moves inwards, and the air outlet is communicated with the air inlet.
Furthermore, the flange plate is arranged on the inner side of the oil discharge valve, and a plurality of mounting holes are annularly distributed on the ring surface of the flange plate.
Furthermore, the shifting plate corresponds to the inner end of the valve rod of the oil unloading valve.
Furthermore, the outer ring surface of the shifting plate is an arc-surface chamfer ring surface, and the outer diameter of the side surface of the shifting plate facing the piston is larger than that of the side surface of the opposite side.
Further, the poking plate is connected with the piston through a piston rod.
Furthermore, an O-shaped sealing ring is arranged on the outer annular surface of the piston.
Furthermore, the exhaust port, the air outlet and the air inlet are arranged on the side face of the air control connector and are arranged in the direction away from the flange plate in sequence.
Furthermore, the air flue penetrates through the side walls of the air control joint and the flange plate in the radial direction of the flange plate, and the outer end of the air flue is provided with a sealing plug.
After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:
(1) the utility model has simple integral structure, can realize the switching of the communicating gas circuit in the mechanical driving gas control joint through the closing action of the oil discharge valve, thereby realizing the automatic closing of the emergency oil discharge valve by using the gas control, avoiding the situation that the oil discharge valve forgets to close, preventing the oil leakage and improving the safety performance;
(2) the utility model provides a gas accuse mechanism can directly cup joint on the fuel discharge valve with the direct cooperation of fuel discharge valve, need not to change the original structure of fuel discharge valve or even tank wagon, on the basis that improves the security performance, reduces use cost.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a structural diagram of an air control mechanism of an emergency shut-off valve externally connected to an oil drain valve according to a preferred embodiment of the present invention;
fig. 2 is a front view of an air control mechanism of an emergency shut-off valve externally connected to an oil drain valve according to a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a structural diagram of the cooperation of the emergency cut-off valve pneumatic control mechanism externally connected to the oil drain valve and the oil drain valve according to the preferred embodiment of the present invention;
fig. 5 is a left side view of the pneumatic control mechanism of the emergency shut-off valve externally connected to the oil drain valve according to the preferred embodiment of the present invention in cooperation with the oil drain valve;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
fig. 7 is a schematic view of the gas circuit connection of the emergency cut-off valve pneumatic control mechanism externally connected to the oil drain valve according to the preferred embodiment of the present invention;
in the figure: the pneumatic control mechanism comprises a pneumatic control mechanism 1, a flange plate 11, a pneumatic control joint 12, an air channel 13, a piston 14, a shifting plate 15, a spring 16, an air inlet 17, an air outlet 18, an air outlet 19, a mounting hole 110, a groove 111, an arc-surface chamfer ring surface 112, a lightening groove 113, an O-shaped sealing ring 114, a sealing plug 115, a piston rod 116, an oil unloading valve 2, a valve rod 21, a handle 22, a sealing plate 23, an emergency cut-off valve 3, a pneumatic control switch 4, a main path switch 41, a shunt switch 42, an air source inlet 43, a control air channel air inlet 44 and a shunt.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-7, an air control mechanism of an emergency cut-off valve externally connected to an oil discharge valve comprises a flange plate 11 and an air control joint 12 integrally arranged on the outer side of the flange plate 11; an air passage 13 is arranged in the pneumatic control joint 12, a piston 14 is arranged in the air passage 13, the piston 14 is connected with a shifting plate 15 arranged in the flange plate 11, a spring 16 is arranged on the outer side of the piston 14, and an air inlet 17, an air outlet 18 and an air outlet 19 which are communicated with the air passage 13 are arranged on the pneumatic control joint 12; the piston 14 moves outwards, the air outlet 18 is communicated with the exhaust port 19, the piston 14 moves inwards, and the air outlet 18 is communicated with the air inlet 17.
Specifically, the oil discharge valve 2 is installed at the end of a pipeline leading out from the emergency cut-off valve 3, and the air control mechanism 1 is directly installed between the oil discharge valve 2 and the pipeline and is matched with the oil discharge valve 2.
The pneumatic control switch 4 of the oil tank truck comprises a main path switch 41 and at least two branch switches 42, and when the main path switch 41 is turned on, the branch switches 42 are turned on to supply air to the air paths corresponding to the branch switches 42. The main switch 41 is provided with an air source inlet 43 and a control air path inlet 44, and the branch switches 42 are respectively provided with a branch switch outlet 45.
Correspondingly, the air inlet 17 on the pneumatic connector 12 is connected with one of the branch switch air outlets 45, the air outlet 18 is connected with the control air path air inlet 44, the pneumatic control part of the emergency cut-off valve 3 is connected with two branch switch air outlets 45, when the branch switch 42 is opened to supply air to the emergency cut-off valve 3, the emergency cut-off valve 3 is opened, and when the air supply is stopped, the emergency cut-off valve 3 is closed. When the air source is connected to the air passage connected between the air outlet 18 and the control air passage inlet 44, the main passage switch 41 can be automatically closed, and the quick action emergency valve 3 can be automatically closed.
In order to facilitate the installation of the pneumatic control mechanism 1 and the oil discharge valve 2, the flange 11 is installed inside the oil discharge valve 2, and a plurality of installation holes 110 are annularly distributed on the ring surface of the flange.
Preferably, in order to increase the sealing performance of the joint, a plurality of annular grooves 111 are formed in both side surfaces of the flange plate 11, and a gasket is mounted at the joint and can be extruded and deformed in the grooves 111, so that the sealing performance of the joint is improved.
The shifting plate 15 corresponds to the inner end of the valve rod 21 of the oil discharge valve 2 so as to push the piston 14 to move outwards through the valve rod 21 of the oil discharge valve 2.
When the oil discharge valve 2 is in a closed state, the shifting plate 15 is opposite to the inner end of the valve rod 21 of the oil discharge valve 2, when the oil discharge valve 2 is opened, the valve rod 21 moves towards the shifting plate 15 to open the sealing plate 23 of the oil discharge valve 2, and the shifting plate 15 moves towards the outer direction of the flange plate 11 under the pushing of the valve rod 21, so that the piston 14 is driven to move outwards in the air passage 13, and the spring 16 is compressed. When the oil discharge valve 2 is closed again, the valve rod 21 moves towards the direction away from the dial plate 15, the pushing on the dial plate 15 is removed, and the spring 16 is reset at the moment, so that the piston 14 is pushed to move inwards in the air channel 13.
Since the axial direction of the valve stem 21 is perpendicular to the moving direction of the piston 14, in order to drive the piston 14 by the movement of the valve stem 21 in the axial direction thereof, the outer annular surface of the dial plate 15 is a cambered chamfered annular surface 112, and the outer diameter of the side surface thereof facing the piston 14 is larger than the outer diameter of the side surface on the opposite side.
The structure of the cambered surface chamfer ring surface 112 can play a role in steering, namely, when the oil discharge valve 2 is opened, the inner end of the valve rod 21 can be attached to the cambered surface chamfer ring surface 112 to smoothly push the shifting plate 15 to move outwards.
Preferably, the side of the dial 15 facing the piston 14 is provided with a weight-reduction groove 113.
To connect the dial 15 to the piston 14, the dial 15 is connected to the piston 14 via a piston rod 116.
Preferably, the screw of the dial plate 15 is connected to the end of the piston rod 116, and the removable connection can be easily removed and replaced when the dial plate 15 is worn.
Preferably, the outer diameter of the piston rod 116 is smaller than the inner diameter of the air channel 13, so as to facilitate the air passage communication between the air outlet 18 of the air control joint 12 and the air outlet 19.
An O-ring 114 is attached to an outer circumferential surface of the piston 14 to increase sealing performance when the piston 14 moves.
Specifically, the piston 14 is provided with a ring groove on an outer circumferential surface thereof, and an O-ring 114 is installed in the ring groove.
In order to enable switching of different communicating air passages by movement of the piston 14, the exhaust port 19, the air outlet 18 and the air inlet 17 are provided on the side of the air control joint 12, and are arranged in a direction away from the flange plate 11 in order.
Specifically, in the present embodiment, the air outlet 19 and the air inlet 17 are disposed on the same side of the pneumatic control joint 12, and the air outlet 18 is disposed on the opposite side of the pneumatic control joint 12 from the air inlet 17.
After the oil discharge valve 2 is opened, the valve rod 21 pushes the piston 14 to move backwards and compresses the spring 16 to connect the air outlet 18 and the exhaust port 19; when the oil drain valve 2 is closed, the piston 14 moves inward under the action of the spring 16, and the air inlet 17 and the air outlet 18 are communicated.
In order to ensure the tightness of the air passage 13 on the outer side part of the piston 14 and realize the switching of the communicated air passages, the air passage 13 penetrates through the air control joint 12 and the side wall of the flange 11 in the radial direction of the flange 11, and the outer end of the air passage 13 is provided with a closing plug 115.
When the oil tank truck is used for loading oil, firstly, the external oil pipe is connected with the oil unloading valve 2, the handle 22 of the oil unloading valve 2 is manually pulled, the oil unloading valve 2 is opened, the valve rod 21 pushes the piston 14 to move outwards at the moment, so that the air outlet 18 and the air outlet 19 are communicated, air pressure in an air path connected with the air outlet 18 can be discharged, then the main path switch 41 of the air control switch 4 is opened, two branch switches 42 connected with the air control connector 12 and the emergency cut-off valve 3 are sequentially opened, the air control part of the emergency cut-off valve 3 is ventilated, and then the emergency cut-off valve 3 is opened, so that the oil loading operation can be carried.
After oil filling is finished, the oil discharge valve 2 is manually closed, the valve rod 21 is reset, the piston 14 is reset under the action of the spring 16, the air outlet 18 and the air inlet 17 are communicated, so that a communicated air path is formed with the control air path air inlet 44, the control air path air inlet 44 is ventilated, the main path switch 41 is driven to be closed, then each branch of the pneumatic control switch 4 stops air supply, the emergency cut-off valve 3 is automatically closed, meanwhile, air supply to the pneumatic control joint 12 is stopped, and the oil discharge valve 2, the emergency cut-off valve 3 and the pneumatic control mechanism 1 are all in an original closed state.
The utility model discloses can be when closing oil discharge valve 2 self-closing emergency cut-off valve 3, need not independent manual closing again, easy operation can avoid appearing emergency cut-off valve 3 and forget the condition of closing, prevents the leakage of oil, improves the security performance. And this air control mechanism 1 can directly assemble on current tank wagon and unload the cooperation of fuel tap, need not to change the original structure of tank wagon, only needs the change of part gas circuit hose to realize, has reduced use cost.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. An air control mechanism of an emergency cut-off valve externally connected with an oil discharge valve is characterized by comprising a flange plate (11) and an air control joint (12) integrally arranged on the outer side of the flange plate (11);
an air passage (13) is arranged in the air control joint (12), a piston (14) is installed in the air passage (13), the piston (14) is connected with a shifting plate (15) arranged in the flange plate (11), a spring (16) is arranged on the outer side of the piston (14), and an air inlet (17), an air outlet (18) and an air outlet (19) which are communicated with the air passage (13) are arranged on the air control joint (12);
the piston (14) moves outwards, the air outlet (18) is communicated with the exhaust port (19), the piston (14) moves inwards, and the air outlet (18) is communicated with the air inlet (17).
2. The air control mechanism of the emergency cut-off valve externally connected with the oil discharge valve according to claim 1, wherein the flange (11) is installed at the inner side of the oil discharge valve (2), and a plurality of installation holes (110) are annularly distributed on the ring surface of the flange.
3. The air control mechanism of the emergency cut-off valve externally connected with the oil unloading valve according to claim 1, characterized in that the shifting plate (15) corresponds to the inner end of the valve rod (21) of the oil unloading valve (2).
4. The air control mechanism of an emergency cut-off valve circumscribed on an oil discharge valve of claim 1, wherein the outer annular surface of the dial plate (15) is a cambered chamfered annular surface (112) and the outer diameter of the side surface facing the piston (14) is larger than that of the side surface on the opposite side.
5. The air control mechanism of an emergency shutdown valve circumscribed by an oil discharge valve of claim 1 wherein the dial plate (15) is connected to the piston (14) by a piston rod (116).
6. The air control mechanism of an emergency shut-off valve circumscribing an oil discharge valve as claimed in claim 1, wherein an O-ring seal (114) is mounted on an outer annular surface of the piston (14).
7. The air control mechanism of the emergency cut-off valve externally connected with the oil discharge valve according to claim 1, wherein the air outlet (19), the air outlet (18) and the air inlet (17) are arranged on the side surface of the air control joint (12) and are arranged in a direction away from the flange plate (11) in sequence.
8. The air control mechanism of the emergency cut-off valve externally connected with the oil discharge valve according to claim 1, wherein the air passage (13) penetrates through the air control joint (12) and the side wall of the flange plate (11) in the radial direction of the flange plate (11), and a closing plug (115) is installed at the outer end of the air passage (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576318.8U CN213512323U (en) | 2020-11-09 | 2020-11-09 | Emergency cut-off valve pneumatic control mechanism externally connected to oil discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576318.8U CN213512323U (en) | 2020-11-09 | 2020-11-09 | Emergency cut-off valve pneumatic control mechanism externally connected to oil discharge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213512323U true CN213512323U (en) | 2021-06-22 |
Family
ID=76422391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022576318.8U Active CN213512323U (en) | 2020-11-09 | 2020-11-09 | Emergency cut-off valve pneumatic control mechanism externally connected to oil discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213512323U (en) |
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2020
- 2020-11-09 CN CN202022576318.8U patent/CN213512323U/en active Active
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