CN2174617Y

CN2174617Y - Pneumatic grease gun

Info

Publication number: CN2174617Y
Application number: CN 93224395
Authority: CN
Inventors: 叶菁银
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-15
Filing date: 1993-09-15
Publication date: 1994-08-17
Anticipated expiration: 2003-09-15

Abstract

The utility model relates to a pneumatic grease gun, belonging to the lubricating oil filling tool. The utility model is composed of a pneumatic power-assisted device, a storage oil device, and a compressed air control device. The compressed air control device which is composed of an injection nozzle, an oil inlet and an outlet valves, a power-assisted cylinder, a piston, a tappet, etc. are arranged on the front end of the grease gun; the storage oil device which is composed of an oil cylinder, an oil cylinder base, an oil baffle plate and a back cover oil is arranged in the middle thereof; a gas control device which is composed of an air cylinder, a push rod, an air inlet valve, a handle, etc. are arranged on the tail. The utility model uses automobile gas source or servicing point compressed air to realize pneumatic boosting, so that the oil pressure is large, the operate is smoothly, grease overflowing can be avoided, labor saving can be reached, and the environment is provided; besides the utility model is especially suitable for filling oil for cars and tractors.

Description

Pneumatic grease gun

The utility model pneumatic type grease gun belongs to the lubricated fueling vehicle of engineering machinery.

Gearing (especially automobile, tractor) is through long-time running, and the status of equipment variation as untimely interpolation lubricating grease, will be quickened component wear, so that influences complete machine performance and life-span.In time adding notes lubricating grease is one of important content of vehicle maintenance.The traditional approach that adds at present lubricating grease is to adopt press bar type grease gun, during use, and a holds oil cylinder, a handling depression bar uses this mode to refuel, low fuel pressure, labor intensity is big, and grease is easily excessive, befouling environment not only, and cause the grease waste.

The purpose of this utility model is that the maintenance that is gearing, particularly vehicle provides a kind of and can reduce labor intensity, and improves working environment, saves the novel grease gun of oil plant.

The technical solution of the utility model is to realize that so it is to utilize automobile source of the gas or maintenace point compressed air gas source, realizes pneumatic reinforcing, will inject oil nozzle after the grease supercharging.The structure of pneumatic type grease gun is formed promptly air pressure assisted device, Oil container and pressurized gas control gear by three big parts.The air pressure assisted device of being made up of parts such as pump nozzle, outlet valve, oiling valve, servo-cylinder, piston, tappet, leather cups is at the front end of grease gun; The Oil container of being made up of oil cylinder, cylinder pedestal, oil baffle and bonnet is contained in the middle part of grease gun; Its afterbody of pressurized gas control gear position of forming by cylinder, push rod, air valve plunger, suction valve, suction tude, handle etc.

By air pressure assisted device, Oil container, pressurized air control gear three parts grease gun is divided into five spaces, by being respectively grease pumping chamber, gas equilibrium chamber, pressurized gas reinforcement chamber, air-pressure chamber and overbottom pressure chamber behind the forward direction, in grease pumping chamber, gas equilibrium chamber, air-pressure chamber and overbottom pressure chamber, spring is housed respectively.

In grease gun, realize predetermined operation in order to make pressurized gas, on the circumference of cylinder pedestal less than cylinder bore diameter 3～4mm, the position, overbottom pressure chamber of cylinder and air valve plunger neutral position radially, the end face that links to each other with oil cylinder of bonnet and greater than oil cylinder external diameter 7～10mm circumference on, evenly have 3～4 vents respectively, and more preceding two holes of the sectional area of bonnet vent are little.

Described outlet valve, oiling valve, suction valve adopt one-way valve.

For making the refueling operation can smooth implementation, piston and servo-cylinder, cylinder pedestal, oil baffle and oil cylinder adopt Spielpassung between air valve plunger and the cylinder, make it activity freely, and for preventing gas leakage, leakage of oil, above-mentioned each moving parts is equipped with seal ring respectively in addition.

Be the maintenance make things convenient for grease gun itself and add the grease operation that the connection of each component is all adopted removable being threaded as servo-cylinder and oil cylinder, tappet and piston, oil cylinder and bonnet, push rod and cylinder pedestal etc.

The grease gun of structure like this and traditional press bar type grease gun relatively owing to adopt pneumatic reinforcing, have improved the jet power of grease greatly, acceleration adds speed oil, and pneumatic reinforcing has alleviated labor intensity, makes that two hands can trustworthy oil gun, avoid grease excessive, promptly save oil plant and reduce environmental pollution again.

Below in conjunction with a description of drawings embodiment of the present utility model, for clarity sake, reference character among the figure adopts discontinuous numbering, the numbering of each part comes respectively after the affiliated unit number, for example air pressure assisted device feature is numbered (1), then part that these parts comprised such as pump nozzle, outlet valve ... be numbered (11), (12) respectively ..., all the other and the like.

With reference to Fig. 1 as can be known, the pneumatic type grease gun is made up of air pressure assisted device (1), Oil container (2), pressurized gas control gear (3) three big parts, is contained in grease gun front end, middle part and afterbody in order respectively.Air pressure assisted device comprises pump nozzle (11), outlet valve (12), oiling valve (13), oil pipe (14), servo-cylinder (15), piston (18), leather cup (16), tappet parts such as (17) composition, Oil container is made up of oil cylinder (23), cylinder pedestal (21), oil baffle (22) and bonnet (24), and the pressurized gas control gear comprises cylinder (32), push rod (31), air valve plunger (33), suction valve (35), suction tude (36), handle (37) etc.

Three big parts are divided into grease pumping chamber (I), gas equilibrium chamber (II), pressurized gas reinforcement chamber (III), air-pressure chamber (IV), overbottom pressure chamber (V) five spaces with grease gun, and it is outdoor to remove III, and its complementary space is equipped with spring respectively.

All valves all adopt the I-25 ball check valve on the grease gun.For making the refueling operation can smooth implementation, adopt the Spielpassung of gap 003～005mm between all parts that relative movement arranged, in addition for prevent to leak gas, leakage of oil, piston, cylinder pedestal, oil baffle, air valve plunger are equipped with seal ring respectively.Maintenance that is to make things convenient for grease gun itself and oil cylinder be inner to add the grease operation, and the connection of each component is all adopted removable being threaded as servo-cylinder and oil cylinder, tappet and piston, oil cylinder and bonnet, push rod and cylinder pedestal etc.

The structure of cylinder pedestal is a boss shape disk as shown in Figure 2, and boss and base centre bit are equipped with internal thread, connect cylinder and push rod usefulness respectively, evenly has 4 φ 3 vents (A) on less than cylinder bore diameter d3～4mm circumference.

Rear cover structure as shown in Figure 3, it is the spill disk, the exterior edge face has and the circular hole of cylinder gap for+005mm, interior edge face has the internal thread that is connected usefulness with oil cylinder, has four φ 15 vents (C) on the circumference greater than oil cylinder outer diameter D 10mm.

In addition at radially also corresponding have four φ 3 vents (B) (be made generally in cross section with A sectional area equate) of cylinder with the air valve plunger.

Whole grease gun boundary dimension is length overall 400mm, oil cylinder nominal diameter φ 80, and pump nozzle adopts sharp-mouth type, learns that through use when gas pressure 05～08MPa, the grease pumping chamber can reach 15～22MPa, can carry out refueling operation effectively.During the filling butter, the thrust that acts on hand is not more than 30 Ns.

Tell the use of pneumatic type grease gun below.

1, the oiling operation: driving handle (37) makes air valve plunger (33), air valve joint (34), suction valve valve seat (35) reach, behind the exhaust port B of the seal ring shifter cylinder (32) of plunger, push rod (31) backs down the steel ball of suction valve, gas circuit is unimpeded, this moment, pressurized air directly entered pressurized gas reinforcement chamber (III) by suction tude (36) through cylinder pedestal (21) vent A, promote piston (18), tappet (17) and leather cup (16) move forward rapidly, grease in the grease pumping chamber (I) is extruded, oiling valve (13) cuts out automatically, outlet valve (12) is backed down, and high pressure grease penetrates from pump nozzle (11).

2, during not oiling: not to the handle applied thrust, the air valve plunger moves after under the effect of spring, and suction valve at first cuts out, when plunger moves to vent and overlaps with cylinder vent B, gas in the compression gas-pressure reinforcement chamber (III) enters overbottom pressure chamber (V) by hole A through hole B, discharges from bonnet C hole again.

3, supplemental lubrication fat:

When (1) moving after leather cup, tappet, piston are under the elastic force effect, grease pumping chamber (I) produces negative pressure, and outlet valve cuts out, and oiling valve is opened, and it is indoor that lubricating grease is inhaled into (I).

(2) meanwhile, pressurized gas enters the overbottom pressure chamber, because bonnet C hole is little, gas is not in time got rid of, and the part pressurized gas promotes oil baffle and moves forward, and lubricating grease is squeezed in the oil storage cylinder, make grease in oil outlet tube enters the grease pressurized cylinder, for shot lubrication fat is once more prepared.

Provide pneumatic type grease gun accompanying drawing below, component title and spatial position title

Fig. 1 pneumatic type grease gun general assembly drawing

Fig. 2 cylinder pedestal structural drawing

Fig. 3 rear cover structure figure

(1) air pressure assisted device

(2) Oil container

(3) pressurized gas control gear

(11) pump nozzle (12) outlet valve

(13) oiling valve (14) oil pipe

(15) servo-cylinder (16) leather cup

(17) tappet (18) piston

(21) cylinder pedestal (22) oil baffle

(23) oil cylinder (24) bonnet

(31) push rod (32) cylinder

(33) air valve plunger (34) air valve joint

(35) suction valve (36) suction tude

(37) handle

Gas equilibrium chamber, (I) grease pumping chamber (II)

(III) pressurized gas reinforcement chamber (IV) air-pressure chamber

(V) overbottom pressure chamber

Claims

1, a kind of pneumatic type grease gun, form by pump nozzle, oil cylinder etc., it is characterized in that: grease gun is made up of three big parts, be air pressure assisted device, Oil container and pressurized air control gear, the air pressure assisted device of being made up of parts such as pump nozzle, outlet valve, oiling valve, servo-cylinder, piston, tappets is contained in the front end of grease gun; The Oil container of being made up of oil cylinder, cylinder pedestal, oil baffle and bonnet is contained in the middle part of grease gun; The pressurized gas control gear of being made up of cylinder, push rod, air valve plunger, suction valve, suction tude, handle is contained in the grease gun afterbody.

2, according to the described pneumatic type grease gun of claim 1, it is characterized in that: three big parts are divided into grease gun five spaces respectively, by being respectively the grease pumping chamber behind the forward direction, gas equilibrium chamber, pressurized air reinforcement chamber, air-pressure chamber, overbottom pressure chamber are equipped with spring respectively in grease pumping chamber, gas equilibrium chamber, air-pressure chamber, overbottom pressure chamber.

3, according to the described pneumatic type grease gun of claim 1, it is characterized in that: on the circumference of cylinder pedestal less than cylinder bore diameter 3～4mm, position, cylinder overbottom pressure chamber, air valve plunger neutral position radially, on the bonnet end face and circumference that link to each other with oil cylinder greater than oil cylinder external diameter 7～10mm, evenly have 3～4 vents respectively, and more preceding two holes of the sectional area of bonnet vent are little.

4, according to the described pneumatic type grease gun of claim 1, it is characterized in that: outlet valve, oiling valve, suction valve adopt one-way valve.

5, according to the described pneumatic type grease gun of claim 1, it is characterized in that: piston and servo-cylinder, cylinder pedestal, oil baffle and oil cylinder adopt Spielpassung between air valve plunger and the cylinder, on piston, cylinder pedestal, oil baffle, the air valve plunger motion parts seal ring are housed respectively.

6, according to the described pneumatic type grease gun of claim 1, it is characterized in that: servo-cylinder adopts removable be threaded with bonnet, push rod with cylinder pedestal with piston, oil cylinder with oil cylinder, tappet.