CN2608811Y

CN2608811Y - High pressure hand hydraulic pump

Info

Publication number: CN2608811Y
Application number: CN 03215060
Authority: CN
Inventors: 范云霄; 李明国; 郑轶; 齐秀丽
Original assignee: Machinery And Electronic Engineering College Shandong Science And Technology Un; Xinwen Mining Group Co Ltd
Current assignee: Machinery And Electronic Engineering College Shandong Science And Technology Un; Xinwen Mining Group Co Ltd
Priority date: 2003-02-13
Filing date: 2003-02-13
Publication date: 2004-03-31
Anticipated expiration: 2013-02-13

Abstract

A high pressure hand hydraulic pump is the improvement on an existing hand hydraulic pump. The utility model is characterized in that a valve body is screwed on a fuel-oil tank, and a compression bar with a chute is hinged on the valve body. An oil input one-way valve, an oil output one-way valve and a relief valve are arranged in the valve body. A plunger piston is arranged in an oil cavity of the valve body, and the end of the plunger piston is hinged in the chute of the compression bar through a pin. The plunger piston is pumped back and forth in the oil recess through the operation of the compression bar, and the high pressure output of the oil pump is realized. The utility model has the advantages of simple structure, convenient operation, easy processing and manufacture and low manufacture cost.

Description

High pressure hand-operated oil hydraulic pump

The high pressure hand-operated oil hydraulic pump of the utility model belongs to the hand-hydraulic instrument.

Connecting rod and its complex structure of valve body are arranged between existing hand-hydraulic pump plunger and the depression bar; At the rear portion of fuel tank spiral bonnet is arranged, ventilation plug screw and spiro pluging hole are arranged on spiral bonnet, fuel tank must be erected when fuel tank needs oiling, oiling is very inconvenient, and oil hydraulic pump need become flexible the bolt on the spiral bonnet when oil suction, operation inconvenience and easy oil leakage.

It is comparatively simple that the purpose of this utility model is to design a kind of structure, and oiling is convenient, reliable operation, and easy to operate and oil tight high pressure hand-operated oil hydraulic pump, delivery pressure can reach 60MPa.

Structure of the present utility model such as Fig. 1, Fig. 2, shown in Figure 3, Fig. 1 is a plan view, and wherein valve body is divided into sectional drawing, and Fig. 2 is valve A-A left side pseudosection, fuel tank B-B left side pseudosection during Fig. 3.

Marginal data: 1---in line check valve, 2---valve body, 3---oil suction spring, 4-copper sheathing, 5---plunger, 6---unloading valve, 7---bolt, 8-depression bar, 9---fuel tank, 10---gong plug, 11---fuel-displaced one-way valve, 12-fuel-displaced spring, 13---oil outlet, 14---oil inlet hole, 15------oil pocket, 17-oil outlet, 18-intercommunicating pore, 19---chute that unloads oilhole, 16.

Fuel tank 9 one side spirals are connecting valve body 2 in Fig. 1, and the middle cavity of valve body 2 has oil-feed Check valve 1; Check valve 1 usefulness bolt 7 and oil suction spring 3 are pressed on the fuel feed hole 14 valve body There is oblique oil pocket 16 on 2 right sides, and wear-resisting copper sheathing 4 usefulness screws are connected on the valve body 2, oil pocket 16 with The cavity of in line check valve 1 communicates, and the plunger 5 with sealing ring is housed, plunger 5 in the copper sheathing 4 The rear end is hinged on the depression bar 8 that plays leverage with chute 19 by pin, depression bar 8 ends End is hinged on the valve body 2, can twitch back and forth plunger 5 by depression bar 8; The left end of fuel tank 9 passes through The spiro pluging hole spiral is connecting plug screw 10, and spiro pluging hole communicates with fuel tank 9.

As seen from Figure 2, in valve body 2 one sides fuel-displaced one-way valve 11 is arranged, the cavity of fuel-displaced one-way valve 11 communicates with oil pocket 16 by oil outlet 17, and oil outlet 13 spirals hold out against fuel-displaced volute spring 12, and spring 12 compresses one-way valve 11, and one-way valve 11 compresses oil outlet 17; The cavity of unloading valve 6 communicates by the cavity of intercommunicating pore 18 with fuel-displaced one-way valve 11, and unloading valve 6 spirals hold out against intercommunicating pore 18.

As seen from Figure 3, on valve body 2, unload oilhole 15, make between fuel tank 9 and unloading valve 6 cavitys and be communicated with by unloading oilhole 15.

The utility model has the advantages that: 1. the end at depression bar 8 has chute 19, and plunger is directly installed in the chute of depression bar 8, has cancelled complicated connecting rod, makes overall structure simple; 2. design ventilation plug screw 10 and spiro pluging hole at the bottom of fuel tank upside, made things convenient for oil suction and oiling.3. valve body 2 beautiful shapes, simple in structure are convenient to manufacturing.

Working principle of the present utility model further specifies as follows: as shown in drawings, be marked with liquid oils in the fuel tank 9, and link to each other with atmosphere with spiro pluging hole by plug screw 10.Lift depression bar 8, move on the plunger 5, liquid oils compresses on the spool that oil-feed volute spring 3 makes in line check valve 1 by atmospheric pressure by oil inlet hole 14 and moves, liquid oils enters oil pocket 16, be filled oil pocket until liquid oils, lift process on depression bar 8 stops, the spool of in line check valve 1 sets back by spring force, oil pocket 16 is cut off with the oil circuit of fuel tank 9, finishes oil-absorbing process.Following moulded rod 8 plungers move down, and the liquid oils pressure of oil pocket 16 raises, and liquid oils compresses fuel-displaced volute spring 12 by the spool of fuel-displaced one-way valve 11, spool with on move, high pressure oil is discharged by oil outlet 13, finishes the process of discharging high pressure oil; When opening unloading valve 6, high pressure oil passes through unloading valve 6, and is discharged into fuel tank by the oilhole 15 that unloads with unloading valve 6, finishes the emptying process.

Claims

1. high pressure hand-operated oil hydraulic pump, its structure is that spiral is connecting valve body 2 on the fuel tank 9, articulated depression bar 8 on the valve body 2, it is characterized in that, with bolt 7 and oil suction spring 3 in line check valve 1 is pressed on the oil inlet hole 14 in the cavity in the middle of the valve body 2, oil inlet hole 14 communicates with fuel tank 9, and the oblique oil pocket 16 on valve body 2 right sides communicates with the cavity of one-way valve 1; In the oblique oil pocket 16 copper sheathing 4 is arranged, plunger 5 is housed in the copper sheathing 4, plunger 5 rear ends are inserted in by pin in the chute 9 of depression bar 8, and depression bar 8 is hinged on the valve body 2; Also have fuel-displaced one-way valve cavity in valve body 2 one sides, communicate with oil pocket 6, fuel-displaced one-way valve 11 is arranged in the fuel-displaced one-way valve cavity, and hold out against on oil outlet 17 by oil outlet 13 and volute spring 12 spirals by oil outlet 17; Fuel-displaced one-way valve cavity is communicated with the unloading valve cavity by intercommunicating pore 18, is held out against on intercommunicating pore 18 by unloading valve 6 spirals in the unloading valve cavity, and the unloading valve cavity communicates with fuel tank 9 by unloading oilhole 15.