CN2343385Y - Improved structure pressing pum - Google Patents

Abstract

The utility model relates to a pressurizing pump with an improved structure. The utility model comprises a main shaft, a pressurizing pump, a gear seat, an inner gear, an outer gear, a check ring, a fixing block, an outer cover, a bearing and an O-shaped ring, wherein the pressurizing pump is sheathed on the main shaft, the gear seat, the inner gear, the outer gear, the check ring, the fixing block and the outer cover are arranged on the main shaft and sheathed at one end of the pressurizing pump, and the bearing and the O-shaped ring are arranged on the main shaft and sheathed at the other end of the pressurizing pump. An injection hole and an ejection hole are arranged on the pressurizing pump, a pressurizing area is formed in the gear seat arranged between the pressurizing pump and the outer cover, and the pressurizing area is communicated with the injection hole and the ejection hole. A leakage groove is reserved between the O-shaped ring and the pressurizing pump, and the leakage groove is connected with the injection hole by a perforated reflux duct. As a result, liquid is prevented from refluxing to a motor, and the main shaft runs smoothly.

Description

Improve the compression pump of structure

The utility model relates to a kind of pump, relates to a kind of compression pump that improves structure or rather.

The compression pump that a kind of tradition is used shown in Fig. 1 and Fig. 2 mainly includes main shaft 10, compression pump 20, pinion stand 50, internal gear 60, external gear 70, bearing 90 and enclosing cover 100.

During assembling, earlier main shaft 10 is inserted in the compression pump 20, be inserted in two groups of bearings 90 on the main shaft 10 in compression pump 20 1 ends, be inserted in external gear 70, internal gear 60, pinion stand 50 and enclosing cover 100 on the main shaft 10 outside compression pump 20 the other ends in regular turn.When enclosing cover 100 with after compression pump 20 engages, in the pinion stand 50 of 100 of compression pump 20 and enclosing covers, form pressor areas 23 naturally, pressor areas 23 connects with hand-hole 21, the spraying hole 22 of compression pump 20.

When compression pump 20 runnings of said structure, the gear train in the pressor areas 23 can rotate along with main shaft 10, and can because of the instantaneous variation of pressure rapidly via pressor areas 23 by spraying hole 22 be fast sprayed by the liquid that hand-hole 21 injects this moment again.

This shows that the compression pump 20 of conventional construction because compression pump 20 instantaneous pressures are excessive, often have liquid runs down main shaft 10 and is back to motor 110 in the running, motor life is shortened.Again because compression pump 20 has only an end to be provided with bearing 90 in the running, the other end then is main shaft 10 direct and pump 20 inner frictions, because both are by the material of high hardness, high-speed friction can cause the damage of main shaft 10 and compression pump 20, therefore the compression pump of this kind structure must improve, otherwise is difficult to adapt to industrial needs.

The purpose of this utility model is a kind of compression pump that improves structure of design, and liquid that can not is infiltrated in the motor, can prolong motor life, and by increasing wear resistance and improving lubricity, makes the running of main shaft more smooth and easy.

The purpose of this utility model is to realize like this, improve the compression pump of structure, include main shaft and the compression pump, pinion stand, internal gear, external gear, bearing and the enclosing cover that are nested with on main shaft, the compression pump central position is provided with the penetration hole that passes for main shaft, compression pump is provided with hand-hole and spraying hole, be formed with pressor areas in the pinion stand between compression pump and enclosing cover, pressor areas communicates with hand-hole and spraying hole, it is characterized in that: also include fixed block, back-up ring and O type ring; The penetration hole of described compression pump one end is provided with the scalariform hole, and described O type ring and bearing are arranged in the outer hole in scalariform hole from inside to outside, and the endoporus in scalariform hole forms the seepage groove, is provided with the backflow road that is connected and connects between seepage groove and hand-hole; Also be provided with the scalariform hole on the penetration hole of the described compression pump the other end, described back-up ring is arranged in the endoporus in this scalariform hole, and described fixed block is arranged in the outer hole in scalariform hole, offers the through hole that connects hand-hole, spraying hole and pressor areas on the fixed block.

Described O type is equipped with two.

During assembling, main shaft is inserted in the penetration hole of compression pump, in the outer hole in compression pump one end scalariform hole, embed two O type ring and bearings successively, in the scalariform hole of the compression pump the other end, embed back-up ring and fixed block respectively, on the main shaft in its outside, be inserted in external gear, internal gear, pinion stand and socket enclosing cover in regular turn again, when enclosing cover engage with compression pump finish after, formation pressor areas naturally in the pinion stand just between two parts, and this pressor areas communicates with the hand-hole and the spraying hole of compression pump.Improvement structure of the present utility model is to add back-up ring (adopting the Te Fulong material) and with fixed block it is compressed the location in an end of compression pump, this back-up ring is equivalent to and has added a bearing, because of its high wear resistance and lubricity, and make the running of main shaft more smooth and easy; And in the bearing of the compression pump the other end, added two groups of O type rings, and and reserve the seepage groove, and between seepage groove and hand-hole, set out the backflow road, hand-hole is connected with the seepage groove and communicates.The liquid that partly flows to motor is blocked in the seepage groove and along the backflow road and flows back to inlet, liquid that can not is infiltrated in the motor, to prolong motor life.

Further specify technology of the present utility model below in conjunction with embodiment and accompanying drawing

Fig. 1 is the three-dimensional decomposition texture schematic representation of the compression pump of conventional construction

Fig. 2 is the composite structure schematic representation of Fig. 1 compression pump

Fig. 3 is the three-dimensional decomposition texture schematic representation that improves the structure compression pump

Fig. 4 is the composite structure schematic representation that Fig. 3 improves the structure compression pump

Address before the explanation of Fig. 1 and Fig. 2, repeat no more

Referring to Fig. 3, Fig. 4, the compression pump of this improvement structure mainly includes main shaft 10, compression pump 20, fixed block 30, back-up ring 40, pinion stand 50, internal gear 60, external gear 70, two O type rings 80, bearing 90 and enclosing cover 100.During assembling, main shaft 10 is inserted in the compression pump 20, one end is inserted in two groups of O type rings 80 and bearing 90, the other end then overlaps back-up ring 40, fixed block 30, external gear 70, internal gear 60, pinion stand 50 in regular turn with enclosing cover 100 and connects, and when enclosing cover 100 engage with compression pump 20 finish after, just form a pressor areas 23 naturally in the pinion stand 50 between two parts, and this pressor areas 23 communicates with hand-hole 21, the spraying hole 22 of compression pump 20.

The utility model installs back-up ring 40 additional and with fixed block 30 it is compressed the location at an end of compression pump 20, and deepen to place the hole of bearing 90 for putting into two groups of O type rings 80 in the other end, and reserve a seepage groove 26, offer backflow road 25 at seepage groove 26 and 21 of hand-holes.

When compression pump 20 runnings, gear train in the pressor areas 23 can rotate with main shaft 10, the liquid that is injected by inlet 21 this moment can be sprayed by spraying hole 22 via pressor areas 23 rapidly more fast because of the variation of pressure moment, and owing to offer backflow road 25, the pressure meeting of moment thereby be eased, back-up ring 40 then helps the rotation of main shaft 10 because of its smooth surface and high wear resistance.Compression pump 20 is when high speed rotating, partially liq along main shaft 10 reverse flows to motor 110, capable of blocking its continues towards motor 110 place's adverse currents owing to added 0 type ring 80 before bearing 90, the liquid that is intercepted can accumulate in the seepage groove 26, and these liquid can flow back to hand-hole 21 continuation utilizations along backflow road 25 at last.

This improvement structure is utilized the slickness of back-up ring 40 itself and the rotational stability that high wear resistance is strengthened main shaft 10, and O type ring 80, seepage groove 26 and backflow road 25 can effectively solve the reflux problem of liquid.Improve the design after the structure, can solve the shortcoming of conventional press pump fully, strengthen its effect, and can guarantee the working life of motor.

Claims (2)

1. compression pump that improves structure, include main shaft and the compression pump, pinion stand, internal gear, external gear, bearing and the enclosing cover that are nested with on main shaft, the compression pump central position is provided with the penetration hole that passes for main shaft, compression pump is provided with hand-hole and spraying hole, be formed with pressor areas in the pinion stand between compression pump and enclosing cover, pressor areas communicates with hand-hole and spraying hole, it is characterized in that: also include fixed block, back-up ring and O type ring; The penetration hole of described compression pump one end is provided with the scalariform hole, and described O type ring and bearing are arranged in the outer hole in scalariform hole from inside to outside, and the endoporus in scalariform hole forms the seepage groove, is provided with the backflow road that is connected and connects between seepage groove and hand-hole; Also be provided with the scalariform hole on the penetration hole of the described compression pump the other end, described back-up ring is arranged in the endoporus in this scalariform hole, and described fixed block is arranged in the outer hole in scalariform hole, offers the through hole that connects hand-hole, spraying hole and pressor areas on the fixed block.

2. the compression pump of improvement structure according to claim 1 is characterized in that: described O type is equipped with two.

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