CN110617392A - Grease gun head and grease gun with same - Google Patents
Grease gun head and grease gun with same Download PDFInfo
- Publication number
- CN110617392A CN110617392A CN201910966984.1A CN201910966984A CN110617392A CN 110617392 A CN110617392 A CN 110617392A CN 201910966984 A CN201910966984 A CN 201910966984A CN 110617392 A CN110617392 A CN 110617392A
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- China
- Prior art keywords
- valve
- grease gun
- oil pipe
- plunger cavity
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004519 grease Substances 0.000 title claims abstract description 104
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 241000227287 Elliottia pyroliflora Species 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N3/00—Devices for supplying lubricant by manual action
- F16N3/10—Devices for supplying lubricant by manual action delivering grease
- F16N3/12—Grease guns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/60—Pressure
- F16N2270/64—Set-pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
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.
Description
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.
The first embodiment is as follows:
as shown in fig. 1, in the present embodiment, the grease gun head includes a body 13 of the gun head, a gun barrel connecting portion 12 is disposed on the body 13 for connecting the gun barrel, and the gun barrel connecting portion 12 is connected to the gun barrel through a thread.
The body 13 of the gun head is also provided with a plunger cavity 15, and the axis of the plunger cavity 5 is vertical to the axis of the gun barrel connecting part 12. The plunger cavity 15 is used for mounting the plunger rod 14, and the plunger rod 14 can reciprocate along the axial direction of the plunger rod 14.
It will be appreciated that a copper sleeve may also be mounted within the plunger cavity 15. For example, in an alternative embodiment, a copper sleeve is mounted within the plunger cavity 15, the axis of the copper sleeve being coincident with the axis of the plunger cavity 15. The plunger rod 14 is mounted within the copper sleeve within which the plunger rod 14 is reciprocable in the axial direction thereof. The advantage is that direct friction between the plunger rod 14 and the body 13 of the lance tip is avoided and the copper sleeve can be replaced separately when the plunger rod 14 or the copper sleeve is worn.
A first one-way valve 11 is mounted on a body 13 of the gun head, the first one-way valve 11 comprises a valve body, the valve body is fixedly connected with the body 13 through threads, a through hole with a conical hole section is formed in the center of the valve body, a compression spring and a steel ball are mounted in the valve body, one end of the compression spring is fixed, and the steel ball is supported on the conical hole section through the other end of the compression spring to form a one-way oil path; the first one-way valve 11 is communicated with the gun barrel connecting part 12 and the plunger cavity 15; the direction from the gun barrel connecting part 12 to the plunger cavity 15 of the first check 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; after the lubricating grease in the gun barrel reaches the gun barrel connecting part 12, the one-way valve is opened against the pressure of the compression spring on the steel ball, and the lubricating grease in the gun barrel connecting part 12 enters the plunger cavity 15.
An oil pipe connecting part 16 is further arranged on the body 13 of the gun head, and the oil pipe connecting part 16 is used for connecting an oil pipe so as to inject lubricating grease into the equipment. The axis of the oil pipe connection 16 is parallel to the axis of the barrel connection 12 and perpendicular to the axis of the plunger cavity 15.
A second one-way valve 8 is further arranged on a body 13 of the gun head, the second one-way valve 8 and the body 13 are of an integral structure, a threaded hole with a conical hole section is arranged on the body 13, and the threaded hole with the conical hole section is communicated with a plunger cavity 15 in a small section of the conical hole section; the second one-way valve 8 further comprises a valve body, a fourth compression spring 9 and a fourth steel ball 10, the valve body is fixedly connected with the body 13 through threads, one end of the fourth compression spring 9 is abutted to the valve body, and the other end of the fourth compression spring abuts the fourth steel ball 10 to the taper hole section, so that one-way circulation of an oil way is achieved.
The second one-way valve 8 is communicated with the plunger cavity 15 and the oil pipe connecting part 16; the direction from the plunger cavity 15 to the oil pipe connecting part 16 of the second check 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; under the pressure action of the plunger rod 14, the grease in the plunger cavity 15 can be pressed by the fourth compression spring 9 on the fourth steel ball 10 to open the second one-way valve, so that the grease in the plunger cavity 15 enters the oil pipe connecting part 16 and then enters the oil pipe. It is understood that the oil pipe can be a hose or a steel hard pipe.
This application is ingenious separates the high pressure oil in the oil pipe and the low pressure oil in the barrel of a gun through first check valve 11 and second check valve 8, and mutual noninterference between the two, through the operation of manual depression bar, can easily realize that oil pipe's output pressure reaches more than 100 MPa.
Example two:
as shown in fig. 2, in this embodiment, on the basis of the first embodiment, the grease gun head further includes a pressure relief valve, and the pressure relief valve is connected to the oil pipe connecting portion 16 and the gun barrel connecting portion 12; the relief valve contains and closes and opens two kinds of states, and under the closed condition, oil pipe connecting portion 16 and rifle section of thick bamboo connecting portion 12 are off-state, and under the open condition, oil pipe connecting portion 16 and rifle section of thick bamboo connecting portion 12 are the connected state for with the medium backward flow in the oil pipe connecting portion 16 to rifle section of thick bamboo connecting portion 12.
Specifically, the relief valve in this embodiment and the body of grease gun rifle head structure as an organic whole, be provided with on the body of grease gun rifle head:
a relief valve oil outlet 22 having one end communicating with the gun barrel connecting portion 12;
a relief valve oil inlet hole 23 having one end communicated with the oil pipe connecting portion 16;
the first mounting hole 17;
the other ends of the relief valve oil outlet hole 22 and the relief valve oil inlet hole 23 are connected with the first mounting hole;
install first steel ball 24 and first screw 25 in the first mounting hole, first screw 25 with first mounting hole screw-thread fit and axis coincide with the axis of relief valve inlet port 23, first screw 25 presses first steel ball 24 at the port of relief valve inlet port 23 for control opening and closing of relief valve.
When the gun head outputs lubricating grease outwards, the pressure release valve is in a closed state, and when the connection between the grease gun and the equipment needs to be removed, in order not to damage the oil pipe and an oil injection joint on the equipment, high pressure in the oil pipe can be firstly released through the pressure release valve. Namely, the first screw 25 is screwed, after the screw pressure of the first steel ball 24 is released, the first steel ball 24 leaves the port of the oil inlet 23 of the pressure release valve under the action of the oil pressure in the oil inlet 23 of the pressure release valve, the pressure release valve is opened, and high-pressure lubricating grease in the oil pipe enters the gun barrel connecting part 12 through the pressure release valve.
The advantage of adding the pressure relief valve in this embodiment is: the zero-pressure dismounting of the oil pipe and the equipment can be realized, and the protection of the connecting joint of the oil pipe and the equipment is facilitated.
Example three:
as shown in fig. 3, in this embodiment, on the basis of the second embodiment, the grease gun head further includes an overflow valve, and the overflow valve is connected to the gun barrel connecting portion 12 and the plunger cavity 15; the overflow valve is in a normally closed state in the grease injection state of the grease gun, and 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.
Specifically, in this embodiment, the overflow valve and the body of the grease gun head are of an integral structure, and the body 13 of the grease gun head is provided with:
an overflow valve oil inlet hole 33 with one end 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 both connected with the second mounting hole;
and a second steel ball 34, a second compression spring 31 and a screw plug 32 are arranged in the second mounting hole, one end of the second compression spring 31 is propped against the screw plug 32, and the other end of the second compression spring props the second steel ball 34 against the port of the overflow valve oil inlet 33, so that the overflow valve oil inlet 33 and the overflow valve oil outlet 21 are in a normally closed state.
When the gun head outputs lubricating grease outwards, the overflow valve is in a closed state, when the oil pressure in the plunger cavity 15 exceeds the set pressure value of the overflow valve, the oil pressure in the oil inlet hole 33 of the overflow valve overcomes the acting force of the second compression spring 31 to lift the second steel ball 34, the overflow valve is opened, and high-pressure oil in the plunger cavity 15 flows back to the gun barrel connecting part 12 through the overflow valve, so that the lubricating grease is not output outwards continuously.
It is understood that the return pressure value of the relief valve can be adjusted by adjusting the pressure of the second compression spring 31. For example, in the present embodiment, the position of the screw 32 is adjusted to control the amount of compression of the second compression spring 31, thereby controlling the pressure applied by the second compression spring 31 to the second steel ball 34.
The overflow valve has the advantages that by adding the overflow valve, damage to equipment caused by misoperation of workers can be prevented, and the overflow valve plays a role in automatic protection.
Example four:
as shown in fig. 4 and 5, in this embodiment, based on the third embodiment, the grease gun head further includes an exhaust valve, the exhaust valve is connected to the plunger cavity 15, the exhaust valve is in a normally closed state when the grease gun is in an oil filling state, and the plunger cavity 15 is communicated with the atmosphere through the exhaust valve when the exhaust valve is in an open state.
Specifically, a third mounting hole and an exhaust connecting hole 30 are formed in the body 13 of the grease gun head, and the third mounting hole 19 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 mounted on the third mounting hole, an air inlet hole 35 and an air outlet hole 27 with vertical axes are formed in the valve body 29, and the third screw 26 is used for enabling the third steel ball 28 to be pressed against 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.
When the gun head outputs lubricating grease outwards, the exhaust valve is in a closed state, in the oil injection process, if the pressure rod of the grease gun is weak or oil is not normally discharged, the exhaust valve can be opened in an attempt to release air in the plunger cavity 15, when continuous lubricating grease is discharged from the air outlet hole 27, the internal air is exhausted, and at the moment, the exhaust valve can be closed to continue outputting the lubricating grease outwards.
The advantage of this embodiment lies in, is provided with discharge valve, can guarantee to export stable pressure value with the air escape in the rifle head.
Example five:
in this embodiment, on the basis of the fourth embodiment, the grease gun head further includes a pressure gauge, and the pressure gauge is communicated with the oil pipe connecting portion 16 and is used for displaying the pressure in the oil pipe. Its advantage lies in can showing the pressure value of producing oil in the current oil pipe, conveniently knows current oiling condition.
In this embodiment, the grease gun head is provided with a three-way joint at the oil pipe connecting portion 16, one outlet of the three-way joint is connected with the oil pipe connecting portion 16, one outlet is used for connecting an oil pipe, and the other outlet is used for installing the pressure gauge.
Example 6:
as shown in fig. 6, the grease gun provided by the present application includes a gun barrel 1, an oil pushing plug 2, a pressure lever 3, a gun head 4, a pressure gauge 5, a three-way joint 6, and an oil pipe 7, where the gun head 4 may be any one of the gun heads in the 5 embodiments.
It will be appreciated that when the tip of example 5 is used, the addition of a pressure gauge and a tee fitting is not required as the tip of example five already contains a pressure gauge.
By using the grease gun head, the grease gun can realize zero-pressure dismounting of an oil pipe and equipment; the output pressure value of the gun head can be adjusted; the air in the gun head can be discharged, and the stable pressure value is guaranteed to be output.
In this embodiment, the gun barrel 1, the oil pushing plug 2, the pressure rod 3 and the oil pipe 7 are the same as those in the prior art, and are not described herein again.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966984.1A CN110617392A (en) | 2019-10-11 | 2019-10-11 | Grease gun head and grease gun with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966984.1A CN110617392A (en) | 2019-10-11 | 2019-10-11 | Grease gun head and grease gun with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110617392A true CN110617392A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910966984.1A Pending CN110617392A (en) | 2019-10-11 | 2019-10-11 | Grease gun head and grease gun with same |
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| Country | Link |
|---|---|
| CN (1) | CN110617392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021142508A1 (en) * | 2020-01-17 | 2021-07-22 | Macnaught Pty Ltd | Grease gun |
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| US4062425A (en) * | 1976-12-13 | 1977-12-13 | Wheelabrator-Frye, Inc. | Pressure relief valve for a grease gun |
| CN2159489Y (en) * | 1993-06-12 | 1994-03-23 | 赖帮钧 | Non-leakage tool for filling grease |
| CN2409408Y (en) * | 2000-03-15 | 2000-12-06 | 邹波 | Bidirectional liquid-controlled high-pressure grease gun |
| CN2781156Y (en) * | 2005-03-29 | 2006-05-17 | 董天成 | Decompression valve structure of oil gun |
| CN101158439A (en) * | 2006-10-05 | 2008-04-09 | 威姆斯工业有限公司,以莱格西制造公司营业 | Battery powered grease gun with strain gauge based pressure transducer |
| CN201561254U (en) * | 2009-11-20 | 2010-08-25 | 方的全 | Pressure bar-type grease gun |
| CN202769228U (en) * | 2012-08-27 | 2013-03-06 | 陈亚 | Motor-driven grease gun enabling air to be exhausted easily |
| CN204852870U (en) * | 2015-08-17 | 2015-12-09 | 黄荣福 | Grease gun |
| CN205504433U (en) * | 2016-03-29 | 2016-08-24 | 王荣兴 | Grease nipple |
| CN210687728U (en) * | 2019-10-11 | 2020-06-05 | 北京巴什卡科技有限公司 | Grease gun head and grease gun with same |
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2019
- 2019-10-11 CN CN201910966984.1A patent/CN110617392A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4062425A (en) * | 1976-12-13 | 1977-12-13 | Wheelabrator-Frye, Inc. | Pressure relief valve for a grease gun |
| CN2159489Y (en) * | 1993-06-12 | 1994-03-23 | 赖帮钧 | Non-leakage tool for filling grease |
| CN2409408Y (en) * | 2000-03-15 | 2000-12-06 | 邹波 | Bidirectional liquid-controlled high-pressure grease gun |
| CN2781156Y (en) * | 2005-03-29 | 2006-05-17 | 董天成 | Decompression valve structure of oil gun |
| CN101158439A (en) * | 2006-10-05 | 2008-04-09 | 威姆斯工业有限公司,以莱格西制造公司营业 | Battery powered grease gun with strain gauge based pressure transducer |
| CN201561254U (en) * | 2009-11-20 | 2010-08-25 | 方的全 | Pressure bar-type grease gun |
| CN202769228U (en) * | 2012-08-27 | 2013-03-06 | 陈亚 | Motor-driven grease gun enabling air to be exhausted easily |
| CN204852870U (en) * | 2015-08-17 | 2015-12-09 | 黄荣福 | Grease gun |
| CN205504433U (en) * | 2016-03-29 | 2016-08-24 | 王荣兴 | Grease nipple |
| CN210687728U (en) * | 2019-10-11 | 2020-06-05 | 北京巴什卡科技有限公司 | Grease gun head and grease gun with same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021142508A1 (en) * | 2020-01-17 | 2021-07-22 | Macnaught Pty Ltd | Grease gun |
| US11898696B2 (en) | 2020-01-17 | 2024-02-13 | Macnaught Pty Ltd | Grease gun |
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