Reverse blowing device for unloading of liquid tank truck

Abstract

The utility model discloses a blowback device for unloading of a liquid tank truck, and belongs to the technical field of material loading and unloading. A steel wire braided tube is movably connected to the top of the liquid storage tank in a lap joint mode, the other end of the steel wire braided tube is fixedly connected with an outlet valve on a discharging pump, an inlet valve at the other end of the discharging pump is fixedly connected with the bottom end of a T-shaped three-way valve through the steel wire braided tube, and the side end of the T-shaped three-way valve is fixedly connected with one end of a second ball valve. The other end of the second ball valve is fixedly connected with the male head end of the buckle type quick connector through the steel wire braided tube; the female head end of the buckle type quick connector is fixedly connected with an outlet valve of the air compressor through a steel wire braided tube; wherein the male head end of the buckle type quick connector can be detachably connected with the female head end of the buckle type quick connector. According to the utility model, the liquid back-blowing device is additionally arranged, so that residual liquid materials in the discharging pipeline can be back-blown into the liquid storage tank after discharging is completed, the waste of the materials is reduced, and meanwhile, the discharging process is safer.

Description

Technical Field

[0001] The utility model discloses a back-flushing device for unloading liquid tank trucks, belonging to the technical field of material loading and unloading. Background Art

[0002] Liquid tankers are primarily used to transport gasoline, crude oil, vegetable oil, alcohol, hazardous chemicals, and other materials, playing a crucial role in transportation, accounting for approximately 18% of all trucks. After delivering liquid materials to their destination, tankers typically transfer the liquid material from the tanker to a liquid storage tank via a discharge pipe, primarily through the liquid's inherent fluidity and the drive of a discharge pump. However, after discharge, some material may remain in the discharge pipe, causing some liquid to leak when the discharger disconnects the discharge pipe, potentially causing burns to the unloader and polluting the environment. Furthermore, unloading is unsafe. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the utility model provides a back-blowing device for unloading liquid tank trucks.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] A back-blowing device for unloading a liquid tanker truck, a steel wire braided tube is movably overlapped on the top of the liquid storage tank, the other end of the steel wire braided tube is fixedly connected to the outlet valve on the unloading pump, the inlet valve at the other end of the unloading pump is fixedly connected to the bottom end of the T-type three-way valve through the steel wire braided tube, the top of the T-type three-way valve is fixedly connected to a first ball valve, the other end of the first ball valve is fixedly connected to the female end of the bayonet quick connector through the steel wire braided tube, the female end of the bayonet quick connector can be detachably connected to the discharge valve on the tank truck loaded with liquid; the side end of the T-type three-way valve is fixedly connected to one end of the second ball valve, the other end of the second ball valve is fixedly connected to the male end of the bayonet quick connector through the steel wire braided tube; the female end of the bayonet quick connector is fixedly connected to the outlet valve of the air compressor through the steel wire braided tube; wherein, the male end of the bayonet quick connector and the female end of the bayonet quick connector can be detachably connected.

[0006] The beneficial effects of the present invention are as follows: the present invention provides a back-flush device for unloading a liquid tank truck. By adding a liquid back-flush device to the unloading pipeline, the liquid material remaining in the unloading pipeline after unloading is completed can be back-flushed into the liquid storage tank, thereby reducing material waste and avoiding environmental pollution caused by the outflow of residual materials in the unloading pipeline; when unloading hazardous materials, adding a liquid back-flush device can also avoid burns to the unloading personnel caused by the outflow of hazardous materials remaining in the unloading pipeline, making the unloading process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1This is a flow chart of the backflush device for unloading liquid tank trucks of the present invention, and is also used as an abstract drawing. DETAILED DESCRIPTION

[0008] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings.

[0009] like Figure 1 As shown, a backflush device for unloading a liquid tank truck is provided, wherein a steel wire braided tube is movably overlapped on the top of the liquid storage tank 2, and the overlapped steel wire braided tube extends into the liquid storage tank 2, so that the liquid material will not splash out when the liquid material is introduced into the liquid storage tank 2, and the possibility of the steel wire braided tube falling off is also reduced; the other end of the steel wire braided tube is fixedly connected to the outlet valve 4 on the unloading pump 3, and the inlet valve 5 at the other end of the unloading pump 3 is fixedly connected to the bottom end of the T-type three-way valve 11 through the steel wire braided tube; the top of the T-type three-way valve 11 is fixedly connected to the first ball valve 12, which is opened or closed by The first ball valve 12 is used to control whether the liquid material enters the discharge pipe, and at the same time it can also block the connection between the tank truck 1 and the T-type three-way valve 11 and the discharge pipe again; the other end of the first ball valve 12 is fixedly connected to the female end 8 of the bayonet quick connector through a wire braided tube, and the female end 8 of the bayonet quick connector can be detachably connected to the discharge valve on the tank truck 1 loaded with liquid; when the liquid material in the tank truck 1 needs to be unloaded, the female end 8 of the bayonet quick connector connected to the first ball valve 12 is connected to the discharge valve on the tank truck 1, which is convenient, fast and easy to operate.

[0010] The side end of the T-type three-way valve 11 is fixedly connected to one end of the second ball valve 10. By opening or closing the second ball valve 10, the air compressor 6 and the discharge pipe are connected or disconnected through the T-type three-way valve 11. When the air compressor 6 is needed to back-blow the discharge pipe, the second ball valve 10 is slowly opened to complete the operation of back-blowing the liquid material. When back-blowing is not required during the unloading process, the second ball valve 10 is in a closed state; the other end of the second ball valve 10 is fixedly connected to the male end 9 of the bayonet quick connector through a steel wire braided tube; the female end 8 of the bayonet quick connector is fixedly connected to the outlet valve 7 of the air compressor 6 through a steel wire braided tube; wherein, the male end 9 of the bayonet quick connector and the female end 8 of the bayonet quick connector can be detachably connected, and are connected through the bayonet quick connector, making the connection operation simple and quick.

[0011] Specifically, when the tank truck 1 is unloading, it is necessary to connect the female end 8 of the snap-on quick connector connected to the first ball valve 12 to the discharge valve on the tank truck 1, and connect the tank truck 1 with the discharge pipeline, the discharge pump 3 and the liquid storage tank 2; before unloading begins, close the outlet valve 4 on the discharge pump 3, and open the inlet valve 5 on the discharge pump 3, and then open the exhaust valve on the discharge pump 3. Secondly, close the second ball valve 10 installed on the side end of the T-type three-way valve 11 and open the first ball valve 12 installed on the top end of the T-type three-way valve 11. After the preliminary work is ready, open the discharge valve on the tank truck 1 to allow the liquid material to fill the discharge pipeline and the discharge pump 1, thereby discharging the air in the discharge pipeline through the opened exhaust valve on the discharge pump 1. When the liquid material completely fills the discharge pump 1, close the exhaust valve of the discharge pump 1 The air valve is opened, and then the outlet valve 4 on the unloading pump 3 is opened, and the unloading pump 1 is started at the same time. The liquid material in the tank truck 1 is all transported into the liquid storage tank 2 by the drive of the unloading pump 1, thereby completing the unloading process of the liquid material. When the unloading is completed, the unloading pump 1 and the discharge valve on the tank truck 1 are immediately closed, and the first ball valve 12 installed on the top of the T-type three-way valve 11 is closed. Then, the male end 9 of the snap-on quick connector is connected to the female end 8 of the snap-on quick connector connected to the air compressor 6, and the outlet valve 7 of the air compressor 6 is opened, and the air compressor 6 is started to compress the air. Then, the second ball valve 10 is slowly opened, and the compressed air is slowly introduced into the unloading pipe. The liquid material remaining in the unloading pipe is blown back into the liquid storage tank 2 by the compressed air, so that there is no residual liquid material in the unloading pipe.

[0012] The above embodiments are merely examples for clarity of explanation and are not intended to limit the embodiments. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A backflush device for unloading a liquid tank truck, wherein a steel wire braided tube is movably overlapped on the top of the liquid storage tank (2), and the other end of the steel wire braided tube is fixedly connected to the outlet valve on the unloading pump (3), and the inlet valve (5) at the other end of the unloading pump (3) is fixedly connected to the bottom end of the T-type three-way valve (11) through the steel wire braided tube, and the top end of the T-type three-way valve (11) is fixedly connected to a first ball valve (12), and the other end of the first ball valve (12) is fixedly connected to the female end (8) of a snap-on quick connector through the steel wire braided tube, and the female end (8) of the snap-on quick connector can be detachably connected to the discharge valve on the tank truck (1) loaded with liquid, characterized in that: The side end of the T-type three-way valve (11) is fixedly connected to one end of the second ball valve (10), and the other end of the second ball valve (10) is fixedly connected to the male end (9) of the snap-on quick connector through a steel wire braided tube; the female end (8) of the snap-on quick connector is fixedly connected to the outlet valve of the air compressor (6) through the steel wire braided tube; wherein the male end (9) of the snap-on quick connector and the female end (8) of the snap-on quick connector can be detachably connected.

Images