阅读说明：本技术 一种黄油枪枪头及具有其黄油枪 (Grease gun head and grease gun with same ) 是由 高润 于 2019-10-11 设计创作，主要内容包括：本申请公开了一种黄油枪枪头,包括：枪筒连接部,用于连接枪筒；柱塞腔,所述柱塞腔内用于安装柱塞杆,所述柱塞杆沿其轴线方向能够做往复运动；第一单向阀,所述第一单向阀连通所述枪筒连接部与柱塞腔；油管连接部,用于连接油管；第二单向阀,所述第二单向阀连通所述柱塞腔与所述油管连接部；所述柱塞杆用于将所述柱塞腔内的介质压入所述油管连接部内。本申请还公开了一种黄油枪,所述黄油枪包含如上所述的黄油枪枪头。本申请巧妙的通过两级单向阀将油管内的高压油与枪筒内的低压油隔离,通过手动压杆操作,即可轻松实现油管的输出压力达到100MPa以上,还可以实现油管与设备的零压拆除；可以调节枪头的输出压力值；可以将枪头内的空气排出。(The application discloses grease gun rifle head includes: the gun barrel connecting part is used for connecting the gun barrel; the plunger cavity is used for mounting a plunger rod, and the plunger rod can reciprocate along the axial direction of the plunger rod; the first one-way valve is communicated with the gun barrel connecting part and the plunger cavity; the oil pipe connecting part is used for connecting an oil pipe; the second one-way valve is communicated with the plunger cavity and the oil pipe connecting part; the plunger rod is used for pressing the medium in the plunger cavity into the oil pipe connecting part. The application also discloses a grease gun, the grease gun contains as above grease gun rifle head. According to the oil pipe, high-pressure oil in the oil pipe is ingeniously isolated from low-pressure oil in the gun barrel through the two-stage check valves, the output pressure of the oil pipe can be easily up to more than 100MPa through manual pressure lever operation, and zero-pressure dismantling of the oil pipe and equipment can be realized; the output pressure value of the gun head can be adjusted; the air in the lance tip may be vented.)

1. A grease gun head, comprising:

a plunger rod (14);

a barrel connecting portion (12) for connecting a barrel;

a plunger cavity (15), wherein the plunger cavity (15) is used for installing the plunger rod (14), and the plunger rod (14) can reciprocate along the axial direction of the plunger rod;

a first one-way valve (11) communicating the barrel connection (12) with a plunger cavity (15); the direction from the gun barrel connecting part (12) to the plunger cavity (15) of the first one-way valve (11) is an opening direction, and the direction from the plunger cavity (15) to the gun barrel connecting part (12) is a closing direction;

an oil pipe connection part (16) for connecting an oil pipe;

a second one-way valve (8) communicating the plunger cavity (15) with the tubing connection (16); the direction from the plunger cavity (15) to the oil pipe connecting part (16) of the second one-way valve (8) is an opening direction, and the direction from the oil pipe connecting part (16) to the plunger cavity (15) is a closing direction;

the plunger rod (14) is used for pressing the medium in the plunger cavity (15) into the oil pipe connecting part (16).

2. The grease gun head according to claim 1, characterized in that it further comprises a pressure relief valve connecting the oil pipe connection (16) with the barrel connection (12); the pressure relief valve contains and closes and opens two kinds of states, under the closed condition, oil pipe connecting portion (16) with rifle section of thick bamboo connecting portion (12) are off-state, under the open condition, oil pipe connecting portion (16) with rifle section of thick bamboo connecting portion (12) are the connected state, be used for with the medium backward flow in oil pipe connecting portion (16) extremely rifle section of thick bamboo connecting portion (12).

3. The grease gun head according to claim 2, wherein the pressure relief valve is integral with the body of the grease gun head, and the body of the grease gun head is provided with:

one end of the pressure relief valve oil outlet hole (22) is communicated with the gun barrel connecting part (12);

one end of the pressure relief valve oil inlet hole (23) is communicated with the oil pipe connecting part (16);

a first mounting hole (17);

the other ends of the oil outlet hole (22) and the oil inlet hole (23) of the pressure release valve are connected with the first mounting hole;

install first steel ball (24) and first screw (25) in the first mounting hole, first screw with first mounting hole screw-thread fit and axis with the axis coincidence of relief valve inlet port (23), first screw will first steel ball (24) are pressed the port of relief valve inlet port (23) is used for control opening and closing of relief valve.

4. A grease gun head according to claim 3, characterized in that it further comprises an overflow valve connecting the barrel connection (12) and the plunger cavity (15); the overflow valve is in a normally closed state in the grease injection state of the grease gun, when the pressure in the plunger cavity (15) exceeds the set pressure of the overflow valve, the overflow valve is opened, and the medium in the plunger cavity (15) flows back to the gun barrel connecting part (12) through the overflow valve.

5. The grease gun head according to claim 4, wherein the relief valve is integrated with the body of the grease gun head, and the body of the grease gun head is provided with:

one end of the overflow valve oil inlet hole (33) is communicated with the plunger cavity (15);

an overflow valve oil outlet (21) with one end communicated with the gun barrel connecting part (12);

a second mounting hole (18);

the other ends of the overflow valve oil inlet hole (33) and the overflow valve oil outlet hole (21) are connected with the second mounting hole;

and a second steel ball (34), a second compression spring (31) and a screw plug (32) are mounted in the second mounting hole, one end of the second compression spring (31) is abutted to the screw plug (32), and the other end of the second compression spring abuts the second steel ball to a port of the overflow valve oil inlet hole (33), so that the overflow valve oil inlet hole (33) and the overflow valve oil outlet hole (21) are in a normally closed state.

6. Grease gun head according to claim 5, characterized in that it further comprises a vent valve, which is connected to the plunger chamber (15), which vent valve is normally closed in the grease gun filling state and in which vent valve the plunger chamber (15) is open to the atmosphere in the open state of the vent valve.

7. The grease gun head according to claim 6, characterized in that a third mounting hole (19) and an exhaust connecting hole (30) are formed in the body of the grease gun head, and the third mounting hole is communicated with the plunger cavity (15) through the exhaust connecting hole (30); the exhaust valve comprises a valve body (29), a third steel ball (28) and a third screw (26), the valve body (29) is installed on the third installation hole, an air inlet hole (35) and an air outlet hole (27) which are vertical to each other in axis are formed in the valve body (29), and the third screw (26) is used for enabling the third steel ball (28) to be ejected to the port of the air inlet hole (35) so as to control the communication or the closing of the air inlet hole (35) and the air outlet hole (27).

8. Grease gun head according to claim 7, characterized in that it further comprises a pressure gauge, which communicates with the oil pipe connection (16) for indicating the pressure in the oil pipe.

9. Grease gun head according to claim 8, characterized in that a copper bush is mounted between the plunger cavity (15) and the plunger rod (14).

10. Grease gun, characterized in that it comprises a grease gun head according to any of claims 1 to 9.

Technical Field

The application relates to the technical field of grease guns, in particular to a grease gun head and a grease gun with the same.

Background

Grease guns are hand tools for grease filling of mechanical equipment. The grease gun used in the current market generally comprises an oil storage cylinder, an oil pushing plug, a pressure lever, a gun head, an oil pipe and the like. The gun head of the grease gun is equivalent to a plunger pump, and lubricating grease in the grease storage barrel is pressed into the grease pipe and then injected into equipment needing lubrication. However, the oil outlet pressure of the grease gun can only reach 10 to 30MPa, and the current oil injection pressure cannot be displayed. In addition, after the oil injection work is finished, when the connection between the grease gun and the equipment needs to be removed, the oil pipe and the oil injection nozzle of the equipment are easily damaged due to the fact that certain pressure exists in the oil pipe and the grease gun is forcibly detached.

With the development of industrial technology, grease guns are used not only in the lubrication field but also in pressure equipment. But the pressure equipment needs higher pressure to finish oil injection, and the existing grease gun cannot meet the use requirement. And the existing grease gun has no pressure display device in the using process, and the oil injection pressure value can not be determined. The existing grease gun is not provided with a pressure relief device, and the grease gun is still in a high-pressure state when being separated from equipment needing oiling, so that the grease gun is difficult to disassemble and has certain danger.

Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

Content of application

It is an object of the present application to provide a grease gun head and a grease gun having the same that overcome or at least mitigate at least one of the above-mentioned disadvantages of the prior art.

In order to achieve the above object, the present application provides a grease gun head, the grease gun head includes:

a plunger rod;

a barrel connecting portion for connecting the gun barrel;

the plunger cavity is used for mounting the plunger rod and can reciprocate along the axial direction of the plunger rod;

the first one-way valve is communicated with the gun barrel connecting part and the plunger cavity; the first one-way valve is in an opening direction from the gun barrel connecting part to the plunger cavity, and is in a closing direction from the plunger cavity to the gun barrel connecting part;

the oil pipe connecting part is used for connecting an oil pipe;

the second one-way valve is communicated with the plunger cavity and the oil pipe connecting part; the direction from the plunger cavity to the oil pipe connecting part of the second one-way valve is an opening direction, and the direction from the oil pipe connecting part to the plunger cavity is a closing direction;

the plunger rod is used for pressing the medium in the plunger cavity into the oil pipe connecting part.

Preferably, the grease gun head further comprises a pressure relief valve, and the pressure relief valve is connected with the oil pipe connecting part and the gun barrel connecting part; the pressure relief valve comprises a closed state and an open state, wherein in the closed state, the oil pipe connecting part and the gun barrel connecting part are in a disconnected state, and in the open state, the oil pipe connecting part and the gun barrel connecting part are in a communicated state, and the pressure relief valve is used for enabling a medium in the oil pipe connecting part to flow back to the gun barrel connecting part.

Preferably, the pressure release valve and the body of the grease gun head are of an integrated structure, and the body of the grease gun head is provided with:

one end of the pressure release valve is communicated with the gun barrel connecting part;

one end of the pressure relief valve oil inlet is communicated with the oil pipe connecting part;

a first mounting hole;

the other ends of the oil outlet hole of the pressure release valve and the oil inlet hole of the pressure release valve are connected with the first mounting hole;

install first steel ball and first screw in the first mounting hole, first screw with first mounting hole screw-thread fit and axis with the axis coincidence of relief valve inlet port, first screw will first steel ball press the port of relief valve inlet port is used for control opening and closing of relief valve.

Preferably, the grease gun head further comprises an overflow valve, and the overflow valve is connected with the gun barrel connecting part and the plunger cavity; the overflow valve is in a normally closed state in the grease injection state of the grease gun, when the pressure in the plunger cavity exceeds the set pressure of the overflow valve, the overflow valve is opened, and the medium in the plunger cavity flows back to the gun barrel connecting part through the overflow valve.

Preferably, the overflow valve and the body of the grease gun head are of an integrated structure, and the body of the grease gun head is provided with:

one end of the overflow valve oil inlet is communicated with the plunger cavity;

one end of the overflow valve is communicated with the gun barrel connecting part;

a second mounting hole;

the other ends of the overflow valve oil inlet and the overflow valve oil outlet are connected with the second mounting hole;

and a second steel ball, a second compression spring and a screw plug are arranged in the second mounting hole, one end of the second compression spring is propped against the screw plug, and the other end of the second compression spring props the second steel ball against a port of the oil inlet hole of the overflow valve, so that the oil inlet hole of the overflow valve and the oil outlet hole of the overflow valve are in a normally closed state.

Preferably, the grease gun head further comprises an exhaust valve, the exhaust valve is connected with the plunger cavity, the exhaust valve is in a normally closed state in a grease injection state of the grease gun, and the plunger cavity is communicated with the atmosphere in an opening state of the exhaust valve.

Preferably, a third mounting hole and an exhaust connecting hole are formed in the body of the grease gun head, and the third mounting hole is communicated with the plunger cavity through the exhaust connecting hole; the exhaust valve comprises a valve body, a third steel ball and a third screw, the valve body is installed on the third installation hole, an air inlet hole and an air outlet hole which are vertical to each other in axis are formed in the valve body, and the third screw is used for enabling the third steel ball to abut against the port of the air inlet hole so as to control the communication or the closing of the air inlet hole and the air outlet hole.

Preferably, the grease gun head further comprises a pressure gauge, and the pressure gauge is communicated with the oil pipe connecting part and used for displaying the pressure in the oil pipe.

Preferably, a copper sleeve is arranged between the plunger cavity and the plunger rod.

The application also provides a grease gun, the grease gun comprises the grease gun head.

The beneficial effect of this application lies in:

this application is ingenious separates the interior high pressure oil of oil pipe and the low pressure oil of gun barrel through the two-stage check valve, and mutual noninterference between the two, through manual depression bar operation, can easily realize that oil pipe's output pressure reaches more than 100 MPa. In addition, the grease gun head is also provided with a pressure release valve, so that zero-pressure dismantling of an oil pipe and equipment can be realized; the overflow valve is arranged, so that the output pressure value of the gun head can be adjusted; be provided with discharge valve, can discharge the air in the rifle head, guarantee to export stable pressure value.

Drawings

Fig. 1 is a schematic structural diagram of a grease gun head according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a pressure relief valve of a grease gun head according to a second embodiment.

Fig. 3 is a schematic structural diagram of an overflow valve of a grease gun head provided by a third embodiment.

Fig. 4 is a schematic structural diagram of an exhaust valve of a grease gun head provided by a fourth embodiment.

Fig. 5 is another schematic structural diagram of a grease gun head provided by a fourth embodiment.

Fig. 6 is a schematic structural diagram of a grease gun provided by the present application.

1-gun barrel; 2-pushing an oil plug; 3-a pressure lever; 4-gun head; 5-a pressure gauge; 6-a three-way joint; 7-an oil pipe; 8-a second one-way valve; 9-a fourth compression spring; 10-fourth steel ball; 11-a first one-way valve; 12-barrel connection; 13-a body; 14-plunger rod-; 15-plunger cavity; 16-tubing connection; 17-a first mounting hole; 18-a second mounting hole; 19-a third mounting hole; 21-overflow valve oil outlet; 22-an oil outlet of the pressure release valve; 23-oil inlet hole of pressure release valve; 24-a first steel ball; 25-a first screw; 26-a third screw; 27-air outlet holes; 28-third steel ball; 29-a valve body; 30 exhaust connecting holes; 31-a second compression spring; 32-plug screws; 33-overflow valve oil inlet; 34-second steel ball; 35-air intake.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.