Dumping valve cover suitable for oil drum opening

Abstract

The utility model discloses a dumping valve cover suitable for an oil drum opening, which belongs to the field of discharging devices, a main body comprises a hand-screwing valve cover connected to an oil drum, and a discharging pipe for discharging and a gas conduit for returning gas are connected to the surface of the hand-screwing valve cover in a penetrating manner. The discharging pipe with the valve is installed on the valve cover and used for controlling discharging, and the flow speed can be controlled through the valve; meanwhile, a gas guide pipe is installed on the valve cover, the tail portion of the gas guide pipe is a soft silica gel pipe and extends into the barrel along with installation of the valve cover, the head portion of the gas guide pipe is a hard connecting pipe and is connected with the valve cover in a sealed mode, and the tail end of the gas guide pipe is further connected with an adjustable rotary exhaust valve. And external air can be controlled to enter the barrel along the air guide pipe through the rotary exhaust valve, negative pressure in the barrel is avoided, and therefore stable discharging of the discharging pipe is achieved.

Description

Technical Field

[0001] The utility model relates to the field of discharge devices, in particular to a dumping valve cover suitable for an oil barrel mouth. Background Art

[0002] Chemical raw materials are usually packaged and transported in 200L iron barrels or plastic barrels, generally called oil barrels. During the use of materials, the lid needs to be opened and poured. Since negative pressure will be formed in the barrel during the pouring process, it is easy to cause a sudden flow at the pouring port, which will not only easily cause material loss, but also splash and cause safety accidents. Some oil barrels are equipped with air return ports, but when the air return ports are opened, the material flow rate often suddenly increases and is uncontrolled. In addition, special tools are generally required to open and close the air return ports, which is inconvenient to operate. Utility Model Content

[0003] The main purpose of the utility model is to provide a dumping valve cover suitable for the mouth of an oil drum, which can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A dumping valve cover suitable for the mouth of an oil barrel comprises a hand-tightening valve cover connected to the oil barrel, a discharge pipe is connected through the surface of the hand-tightening valve cover, a discharge ball valve is installed on the discharge pipe, a gas conduit is also connected through the surface of the hand-tightening valve cover, the tail of the gas conduit passes through the hand-tightening valve cover and can extend into the oil barrel, the head of the gas conduit extends out of the hand-tightening valve cover, and a rotary exhaust valve is movably installed at the end.

[0006] Preferably, a connecting portion of an integrated structure is provided on the back of the hand-tightened valve cover, a thread matching the mouth of the oil barrel is engraved on the connecting portion, and a sealing ring is also sleeved on the connecting portion.

[0007] Preferably, laser welding is used to achieve sealing between the discharge pipe and the hand-tightened valve cover.

[0008] Preferably, the gas conduit is divided into two parts, a hard connecting tube and a soft silicone tube, which are integrally formed by a two-color injection molding process. Laser welding is used to achieve sealing between the hard connecting tube and the hand-tightened valve cover. The soft silicone tube is connected to the tail of the hard connecting tube, and the end of the soft silicone tube is flat.

[0009] Preferably, the head of the rigid connecting pipe passes through the hand-tightened valve cover and turns upward, and an internal thread is engraved in the tube wall at the end thereof. The rotary exhaust valve is composed of a screw nut and a stud, which are an integrated structure. The stud is engraved with an external thread that matches the internal thread of the tube wall at the end of the rigid connecting pipe, and the surface of the stud is provided with three wedge-shaped air grooves that are wider at the bottom and narrower at the top.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, a discharge pipe with a valve is installed on a valve cover to control the discharge, and the flow rate can be controlled by the valve; at the same time, a gas conduit is installed on the valve cover, and the tail of the gas conduit is a soft silicone tube, which extends into the barrel as the valve cover is installed, and the head of the gas conduit is a hard connecting pipe, which is not only sealed with the valve cover, but also connected to an adjustable rotary exhaust valve at the end. The rotary exhaust valve can be used to control external air to enter the barrel along the gas conduit, avoid negative pressure in the barrel, and thus make the discharge of the discharge pipe stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model (rear view);

[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model (front view);

[0014] Figure 3 This is a schematic diagram of the gas conduit structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the installation structure of the rotary exhaust valve of the utility model;

[0016] Figure 5 It is a structural sectional view of the rotary exhaust valve of the utility model.

[0017] In the figure: 1. Hand-tightening valve cover; 2. Connecting part; 3. Sealing ring; 4. Discharge pipe; 5. Discharge ball valve; 6. Gas duct; 7. Rotary exhaust valve; 8. Hard connecting pipe; 9. Soft silicone tube; 10. Screw nut; 11. Stud; 12. Air groove. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-Figure 2 As shown, a dumping valve cover suitable for the mouth of an oil drum, the main body of which includes a hand-tightened valve cover 1 connected to the oil drum, and a discharge pipe 4 for discharging materials and a gas conduit 6 for returning air are connected through the surface of the hand-tightened valve cover 1.

[0021] like Figure 1-Figure 2 As shown, a connecting portion 2 of an integrated structure is provided on the back of the hand-tightening valve cover 1, on which a thread matching the mouth of the oil drum is engraved, and a sealing ring 3 is also sleeved on the connecting portion 2 to ensure that the hand-tightening valve cover 1 is tightly connected to the mouth of the oil drum; laser welding is adopted between the discharge pipe 4 and the hand-tightening valve cover 1 to achieve sealing to prevent leakage at the connection, and a discharge ball valve 5 is installed on the discharge pipe 4 to facilitate the control of discharge.

[0022] like Figure 3-Figure 5 As shown, the gas conduit 6 is divided into two parts, a hard connecting tube 8 and a soft silicone tube 9, which are integrally formed by a two-color injection molding process. Laser welding is used to achieve sealing between the hard connecting tube 8 and the hand-tightening valve cover 1. The soft silicone tube 9 is connected to the tail of the hard connecting tube 8 and extends into the oil barrel, and the end of the soft silicone tube 9 is flat. The head of the hard connecting tube 8 passes through the hand-tightening valve cover 1 and turns upward, and an internal thread is engraved in the end tube wall. The rotary exhaust valve 7 consists of a screw nut 10 and a stud 11, which are an integrated structure. The stud 11 is engraved with an external thread that matches the internal thread of the end tube wall of the hard connecting tube 8, and the surface of the stud 11 is provided with three wedge-shaped gas grooves 12 that are wide at the bottom and narrow at the top, so as to control the air intake amount by the screwing amount of the stud 11.

[0023] In actual use, first tighten the hand-tightened valve cover 1 and install it on the barrel mouth, then tilt the oil barrel as usual to pour the material, then open the discharge ball valve 5, and the material in the barrel will naturally flow along the discharge pipe 4 through the discharge ball valve 5 and finally be discharged from the 90-degree elbow at the end of the discharge pipe 4; while discharging the material, the barrel cannot return air and negative pressure will gradually form. At this time, you only need to unscrew the rotary exhaust valve 7, that is, pinch the screw nut 10 by hand to screw the stud 11 out of the end of the hard connecting pipe 8. While screwing it out, the outside air will enter the hard connecting pipe 8 along the air groove 12 on the surface of the stud 11, and the looser the screw is, the greater the air intake will be, until the rotary exhaust valve 7 is completely screwed out of the hard connecting pipe 8 to reach the maximum, because the soft silicone tube 9 When the barrel is extended into the bucket, under the action of negative pressure, the outside air enters the barrel along the hard connecting tube 8 and the soft silicone tube 9, thereby balancing the pressure inside and outside the barrel and ensuring that the discharge pipe 4 discharges the material smoothly; at the same time, since the tail of the soft silicone tube 9 is designed to be flat, under normal circumstances, the tail of the soft silicone tube 9 is in a self-adhesive state, and only when there is negative pressure in the barrel, the outside air will squeeze the tail when passing through the hard connecting tube 8 to the soft silicone tube 9, so that the air enters the barrel from the outside, and when the pressure inside and outside the barrel is balanced, the tail of the soft silicone tube 9 is flat and closed again, and the material in the barrel cannot reversely enter the hard connecting tube 8 from the tail of the soft silicone tube 9, and will not block the gas conduit 6, thereby ensuring the normal and safe use of the gas conduit 6.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dump valve cover suitable for the mouth of an oil drum, Features: The invention comprises a hand-tightened valve cover (1) connected to an oil barrel, a discharge pipe (4) is connected through the surface of the hand-tightened valve cover (1), a discharge ball valve (5) is installed on the discharge pipe (4), and a gas conduit (6) is also connected through the surface of the hand-tightened valve cover (1), the tail of the gas conduit (6) passes through the hand-tightened valve cover (1) and can extend into the oil barrel, the head of the gas conduit (6) extends out of the hand-tightened valve cover (1), and a rotary exhaust valve (7) is movably installed at the end.

2. A dump valve cover suitable for an oil drum mouth according to claim 1, Features: The back of the hand-tightened valve cover (1) is provided with a connecting portion (2) of an integrated structure, a thread matching the mouth of an oil barrel is engraved on the connecting portion (2), and a sealing ring (3) is also sleeved on the connecting portion (2).

3. A dump valve cover suitable for an oil drum mouth according to claim 1, Features: Laser welding is used to achieve sealing between the discharge pipe (4) and the hand-tightened valve cover (1).

4. A dump valve cover suitable for an oil drum mouth according to claim 1, Features: The gas conduit (6) is divided into two parts, namely a hard connecting tube (8) and a soft silicone tube (9), which are integrally formed by a two-color injection molding process. The hard connecting tube (8) and the hand-tightened valve cover (1) are sealed by laser welding. The soft silicone tube (9) is connected to the tail of the hard connecting tube (8), and the end of the soft silicone tube (9) is flat.

5. A dump valve cover suitable for an oil drum mouth according to claim 4, Features: The head of the rigid connecting pipe (8) passes through the hand-tightened valve cover (1) and turns upward, and an internal thread is engraved in the tube wall at the end thereof. The rotary exhaust valve (7) is composed of a screw nut (10) and a stud (11), which are an integrated structure. The stud (11) is engraved with an external thread that matches the internal thread of the tube wall at the end of the rigid connecting pipe (8), and the surface of the stud (11) is provided with three wedge-shaped air grooves (12) that are wider at the bottom and narrower at the top.

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