CN219975526U

CN219975526U - Emergency cut-off bottom valve of tank truck

Info

Publication number: CN219975526U
Application number: CN202320707621.8U
Authority: CN
Inventors: 吴开拓; 刘满红; 吴金矛
Original assignee: Zhejiang Jialong Mechanical Equipment Co ltd
Current assignee: Zhejiang Jialong Mechanical Equipment Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-11-07
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses an emergency cut-off bottom valve of an oil tank truck, which comprises a valve body, an end cover and a movable structure, wherein the end cover is detachably connected to the bottom end of the valve body, the movable structure is connected to the inside of the valve body, a fusible plug is arranged in the center of the end cover, and a filter screen is connected to the top end of the valve body. As a preferable technical scheme of the utility model, the bottom end of the filter screen is provided with an opening, one end of the opening is provided with an inclined plate, and the other end of the opening is provided with a guide plate. As a preferable technical scheme of the utility model, the movable structure comprises a pneumatic connector, and the pneumatic connector is fixed and communicated with the bottom end of the valve body. Through setting up the fusible plug in the bottom of end cover, when the device temperature reached the fusing point of fusible plug, the fusible plug melted and makes the unable normal operation of device to avoid the emergence of accidents such as conflagration. Through setting up the filter screen on the top of valve body, the stone that splashes is intercepted in the tank wagon driving, avoids the valve body to take place to damage with the position that the tank wagon bottom is connected.

Description

Emergency cut-off bottom valve of tank truck

Technical Field

The utility model relates to the field of valves, in particular to an emergency cut-off bottom valve of an oil tank truck.

Background

The bottom valve of the oil tank truck is arranged between the bottom tank body of the oil tank truck and the pipeline to control the oil in the tank body to enter and exit. The structure of the existing tank truck bottom valve generally comprises a valve body, a valve clack, a valve seat, a valve rod, a valve cover, a spring and a pneumatic control device, wherein the valve body is fixedly and hermetically installed at the bottom of an oil tank truck body through a flange, the valve seat is arranged in the valve body, a sealing surface of the valve seat is communicated with an inner cavity of a tank body, a sealing surface matched with the valve seat is arranged on the lower end surface of the valve clack, the lower end of the valve rod is fixedly connected with the center of the valve clack, the upper end of the valve rod is installed in a guide hole in the center of the valve cover, and the spring is installed between the center of an upper plane of the valve clack and the center of an inner end surface of the valve cover. The pneumatic control device consists of a piston mechanism, a piston cylinder is arranged on the pipe wall of the lower part of the valve body in a sealing way, a piston rod is coaxially propped against the valve rod, a rodless cavity of the piston is communicated with an air source, and an air source switch is arranged in a cab of the oil tank truck. When the air source switch is turned on, the air pressure pushes the piston rod to move away from the valve opening flap, and the tank body is subjected to oil unloading or oil loading; when the air source switch is closed, the spring pushes the valve clack to be matched with the valve seat in a sealing way. But when the unexpected condition of tank wagon takes place and leads to outside temperature to rise, the unable automatic closing valve of the device avoids the emergence of further harm, and in the car driving, can't protect the junction of valve body and tank wagon bottom, improves the security of device.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the emergency cut-off bottom valve of the tank truck, which can automatically close the valve when the external temperature of the device rises.

In order to solve the technical problems, the utility model provides the following technical scheme: the emergency cut-off bottom valve of the tank truck comprises a valve body, an end cover and a movable structure, wherein the end cover is detachably connected to the bottom end of the valve body, the movable structure is connected to the valve body, a fusible plug is arranged in the center of the end cover, and a filter screen is connected to the top end of the valve body.

As a preferable technical scheme of the utility model, the filter screen is of a screen-like structure attached to the outer wall of the valve body, and the mesh size of the screen is about 0.5 cm to 1cm.

As a preferable technical scheme of the utility model, the movable structure comprises a pneumatic connector, and the pneumatic connector is fixed and communicated with the bottom end of the valve body.

As a preferable technical scheme of the utility model, the movable structure further comprises a piston base, the piston base is arranged in the valve body, a piston cylinder is arranged on the piston base, and a piston assembly is connected in a sliding manner in the piston cylinder.

As a preferable technical scheme of the utility model, the top of the piston assembly is propped up with a valve clack, the top end of the valve clack is connected with a valve clack shaft, and the valve clack shaft is slidably connected in the valve body.

As a preferable technical scheme of the utility model, the valve clack shaft is sleeved with a spring, one end of the spring is connected with the top end of the valve clack, and the other end of the spring is connected with the bottom end of the valve cover.

As a preferred embodiment of the present utility model, the axis of the piston assembly is collinear with the axis of the flap shaft.

As a preferable technical scheme of the utility model, the valve body is an L-shaped hollow pipeline.

As a preferable technical scheme of the utility model, a sealing plug is connected between the valve clack and the inner wall of the valve body.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up the fusible plug in the bottom of end cover, when the device temperature reached the fusing point of fusible plug, the fusible plug melted and makes the unable normal operation of device to avoid the emergence of accidents such as conflagration.

2. Through setting up the filter screen on the top of valve body, the stone that splashes is intercepted in the tank wagon driving process, avoids the valve body to take place to damage with the position that the tank wagon bottom is connected to the security of device has been improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a filter screen according to the present utility model;

fig. 3 is a cross-sectional view of the connection of the flap shaft to the flap.

Wherein: 1. a valve cover; 2. a spring; 3. a valve body; 4. a valve flap shaft; 5. a filter screen; 6. a valve flap; 7. a piston base; 8. a piston cylinder; 9. a piston assembly; 10. a pneumatic connector; 11. a fusible plug; 12. an end cap.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples:

as shown in fig. 1, the present utility model provides an emergency cut-off foot valve for an oil tank truck,

this device is different with the manual closing of needs under the high temperature state in the current device, is connected with fusible plug 11 through the axis of the end cover 12 of being connected in valve body 3 bottom, seals valve body 3 inside through fusible plug 11, makes the pneumatic joint 10 of valve body 3 internal connection can utilize the air pressure to promote the normal operation of the movable structure that sets up in the valve body 3 to ensure the transportation of fuel. When the external temperature of the tank truck rises, the fusible plug 11 melts and flows out from the bottom end of the end cover 12, so that the air pressure transported by the pneumatic connector 10 flows out from the end cover 12, and the movable structure cannot normally operate, so that the device cannot discharge or charge oil, and the safety of the device is improved, and the occurrence of fire accidents is avoided.

Further, the top end of the valve body 3 is connected with the filter screen 5, and the filter screen 5 is used for blocking splashed stones in the running process of the tank truck, so that the top end of the valve body 3 is prevented from being damaged by the splashed stones. As shown in FIG. 2, the filter screen 5 is of a screen-like structure attached to the outer wall of the valve body, and the mesh size of the screen is about 0.5 cm to about 1cm.

In example 2, as shown in figure 1,

the movable structure comprises a pneumatic connector 10, the pneumatic connector 10 is connected to the bottom end of the valve body 3, high-pressure gas is injected into a cavity in the valve body 3 through the pneumatic connector 10, the pneumatic flow pushes a piston assembly 9 connected in the valve body 3 to move in a lifting manner, the piston assembly 9 is slidably connected in a piston cylinder 8, the piston cylinder 8 is connected to a piston base 7, the piston base 7 is connected in the valve body 3, the top end of the piston assembly 9 is propped against the valve clack 6, the valve clack 6 is pushed to move in a lifting manner through the piston assembly 9, the valve clack shaft 4 is driven to move in the moving process of the valve clack 6, the valve clack shaft 4 is coaxially arranged with the piston assembly 9, the valve clack shaft 4 is pushed to shrink in the moving process of the valve clack shaft 2, the top end of the valve clack shaft 4 is slidably connected in the middle of the valve cover 1, and the valve cover 1 is connected to the top end of the valve body 3.

As shown in fig. 3, in order to ensure that the valve clack 6 can be pushed by high-pressure gas, a sealing plug is connected to the valve clack 6, and the inner wall of the valve body 3 and the valve clack 6 are sealed by the sealing plug, so that high-pressure gas flow can push the valve clack 6 to move up and down.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an emergency cut-off bottom valve of tank wagon, includes valve body (3), end cover (12) and active structure, and end cover (12) are connected with in the bottom of valve body (3) can be dismantled, and valve body (3) internal connection has active structure, its characterized in that: the center of end cover (12) is provided with fusible plug (11), and the top of valve body (3) is connected with filter screen (5).

2. The tank truck emergency shut-off foot valve according to claim 1, wherein: the filter screen (5) is of a screen-like structure attached to the outer wall of the valve body (3), and the mesh size of the screen is about 0.5 cm to 1cm.

3. The tank truck emergency shut-off foot valve according to claim 1, wherein: the movable structure comprises a pneumatic connector (10), and the pneumatic connector (10) is fixed and communicated with the bottom end of the valve body (3).

4. A tank truck emergency shut-off foot valve according to claim 3, characterized in that: the movable structure further comprises a piston base (7), the piston base (7) is arranged in the valve body (3), a piston cylinder (8) is arranged on the piston base (7), and a piston assembly (9) is connected in the piston cylinder (8) in a sliding mode.

5. The tank truck emergency shut-off foot valve according to claim 4, wherein: the top of piston subassembly (9) top is connected with valve clack (6), and the top of valve clack (6) is connected with valve clack axle (4), and valve clack axle (4) sliding connection is in valve body (3).

6. The tank truck emergency shut-off foot valve according to claim 5, wherein: the top of the valve body (3) is connected with a valve cover (1), and the valve cover (1) is connected with a valve clack shaft (4) in a sliding way.

7. The tank truck emergency shut-off foot valve according to claim 6, wherein: the valve clack shaft (4) is sleeved with a spring (2), one end of the spring (2) is connected with the top end of the valve clack (6), and the other end of the spring (2) is connected with the bottom end of the valve cover (1).

8. The tank truck emergency shut-off foot valve according to claim 7, wherein: the axis of the piston assembly (9) is collinear with the axis of the flap shaft (4).

9. The tank truck emergency shut-off foot valve according to claim 1, wherein: the valve body (3) is an L-shaped hollow pipeline.

10. The tank truck emergency shut-off foot valve according to claim 5, wherein: a sealing plug is connected between the valve clack (6) and the inner wall of the valve body (3).