CN202370840U - Internal pressure channel compensated gear pump - Google Patents

Internal pressure channel compensated gear pump Download PDF

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Publication number
CN202370840U
CN202370840U CN2011205796601U CN201120579660U CN202370840U CN 202370840 U CN202370840 U CN 202370840U CN 2011205796601 U CN2011205796601 U CN 2011205796601U CN 201120579660 U CN201120579660 U CN 201120579660U CN 202370840 U CN202370840 U CN 202370840U
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CN
China
Prior art keywords
gear
cap
axis hole
driven
pump
Prior art date
Application number
CN2011205796601U
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Chinese (zh)
Inventor
张意立
Original Assignee
张意立
Priority date (The priority date 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 date listed.)
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Application filed by 张意立 filed Critical 张意立
Priority to CN2011205796601U priority Critical patent/CN202370840U/en
Application granted granted Critical
Publication of CN202370840U publication Critical patent/CN202370840U/en

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Abstract

An internal pressure channel compensated gear pump comprises a driving shaft, a driven shaft, a main gear, an auxiliary gear, an end face compensation disc, a front outer end cover, a rear outer end cover, a pump body and end cover screws, wherein the end face compensation disc is arranged between the front outer end cover and the main gear and between the front outer end cover and the auxiliary gear, an internal pressure channel is arranged on the pump body, one end of the internal pressure channel is communicated with a cavity on the back surface of the compensation disc, and the other end of the internal pressure channel is communicated with a discharge port. With the help of the axial force generated by the internal pressure channel on the cavity on the back surface of the compensation disc, the front plane of the end face compensation disc is tightly adhered to one side end plane of the main gear and one side end plane of the auxiliary gear, so that the other side end plane of the main gear and the other side end plane of the auxiliary gear are forced to be tightly adhered to the inner plane of the rear outer end cover to form axial end face wear compensation clearance control technique, so as to guarantee the efficient running of the gear pump all the time, the conception is ingenious, the structure is simple, the manufacturing is convenient, and the market application potential is huge.

Description

Pressure passageway compensation gear pump in a kind of
Technical field
The utility model belongs to mechanical engineering field, and International Classification of Patents is the F04D non-varactor pump, relate to a kind of with mechanical energy convert into fluid pressure can the transformation of energy rotary volume pump, be meant especially a kind of in pressure passageway compensation gear pump.
Background technique
Rotary volume pump has the high advantage of efficient, but all exists its efficient of long-time running wearing and tearing back obviously to reduce, and causes the main cause of above-mentioned defective to be that movable isolation of end face between hyperbaric chamber and the low pressure chamber fail to play effective sealing.The undersized easy heat expansion of end face fit tolerance is stuck firmly; The end face fit tolerance is oversize then fails to play effective sealing; And long-time running wearing and tearing back sealing effect is poorer, and the production line of having to stop is changed pumping unit, causes very big direct waste and indirect loss.
In all rotary volume pumps, vane pump is widely used in each industry and commerce field because of plurality of advantages such as its compact structures.Perplexing its problem that always can not get effectively solving is: behind the long-term high speed operation, must wearing and tearing of its end face can not get effective compensation.China's license notification number: CN1059019C pendulum rotary vane pump; China's license notification number: CN100374725C rotating vane pump; China's license notification number: the arc toothed mesohigh gear pump of CN1306162C asymmetric double; The internal gear pump of China's license notification number: CN1081750C band plastic shell; China's license notification number: CN101120175B and China's license notification number: a CN101403382B gear pump for micro-miniature turbojet engine etc.; All do not see method and measure that practicable effective compensation is arranged, solve the end wear gap control problem of rotary volume pump.
Summary of the invention
The purpose of the utility model provides a kind of interior pressure passageway compensation gear pump; When effectively controlling radial clearance; Also possess end wear compensation isolation technology,, remedy the deficiency of existing technology to realize being in efficient external series gap state of a control all the time between hyperbaric chamber and the low pressure chamber; Fill up rotary volume pump when effectively controlling radial clearance, also possess the technological gap of end wear compensate for clearance control.
To achieve these goals; The utility model provides following technological scheme: pressure passageway compensation gear pump in a kind of; Comprise driving shaft, driven shaft, master gear, from gear, end-face compensate dish, preceding outer end cap, bolts, the pump housing, back outer end cap; The both ends of the surface of the described pump housing are vertical each other with two semicircle orifices, and outer end cap all has bolts fastening with the back outer end cap before being stamped respectively on the both ends of the surface; The protecgulum of outer end cap active axis hole is on the same axis with the bonnet active axis hole of back outer end cap before described; The driven axis hole of protecgulum of outer end cap is on the same axis with the driven axis hole of bonnet of back outer end cap before described, described driving shaft and protecgulum initiatively between axis hole and the bonnet active axis hole for being slidingly matched; Between driven axis hole of described driven shaft and protecgulum and the driven axis hole of bonnet for being slidingly matched, described master gear and driving shaft secure fit and between preceding outer end cap and back outer end cap; Described from gear and driven shaft secure fit and between preceding outer end cap and back outer end cap; Described master gear be meshing with each other from gear; As improvement: described master gear and between gear and preceding outer end cap, the end-face compensate dish is arranged; And have in one on the described pump housing and press path, an end of interior pressure path is being communicated with the compensating disc backside cavity, and the other end of interior pressure path is being communicated with exhaust port.
As further improvement: described end-face compensate dish have compensating disc initiatively axis hole and protecgulum initiatively axis hole and bonnet active axis hole are on the same axis; Described end-face compensate dish has driven axis hole of compensating disc and the driven axis hole of protecgulum and the driven axis hole of bonnet to be on the same axis; The two semicircle external frames of the compensating disc of described end-face compensate dish are slidingly matched with two semicircle orifices; The described end-face compensate dish back side also has the compensating disc backside cavity.
Structural principle:
External force is through main shaft keyway input, by the related master gear rotation of driving shaft, through master gear be meshing with each other from gear, order about from the gear opposite spin master gear cylindrical and all be slidingly matched with two semicircle orifices from top circle.
Master gear and equal from the gear width.Have in one on the described pump housing and press path, an end of interior pressure path is being communicated with the compensating disc backside cavity, and the other end of interior pressure path is being communicated with exhaust port.The axial force that is produced in the compensating disc backside cavity by means of interior pressure passageway; Make the horizontal frontal plane of end-face compensate dish be close to master gear and from a side plane of gear; Force master gear and be close to the inner plane of outer end cap afterwards from the opposite side Transverse plane of gear; Constitute axial end wear compensation gap control technology, guarantee that gear pump is in high-efficiency operation all the time.
Master gear and from gear when rotated through adjacent two tooth working spaces, constantly bring liquid working media into adjacent two tooth working spaces from suction port, after the rotation semi-circumference, squeeze exhaust port, go round and begin again.
The beneficial effect of the utility model is: in the axial force that the compensating disc backside cavity is produced, make the horizontal frontal plane of end-face compensate dish be close to master gear and from a side plane of gear by means of interior pressure passageway, force master gear and be close to the inner plane of back outer end cap from the opposite side Transverse plane of gear; Constitute axial end wear compensation gap control technology; Guarantee that gear pump is in high-efficiency operation all the time, novel, simple in structure; The convenient manufacturing, application market has a high potential.
Description of drawings
Fig. 1 is the whole sectional drawing through two main axiss of the utility model;
Fig. 2 is the P-P sectional view among Fig. 1;
Fig. 3 is the back side stereogram of the end-face compensate dish 40 among Fig. 1;
Fig. 4 is the sectional view in Q-Q cross section among Fig. 1;
Fig. 5 is a R-R step sectional view among Fig. 4.
Embodiment
In conjunction with accompanying drawing and embodiment, further structure and the working principle to the utility model elaborates.
Pressure passageway compensation gear pump in a kind of; Comprise driving shaft 11, driven shaft 12, master gear 51, from gear 52, end-face compensate dish 40, preceding outer end cap 60, bolts 70, the pump housing 80, back outer end cap 90; The both ends of the surface of the described pump housing 80 are vertical each other with pair semicircle orifice 85, and outer end cap 60 all has bolts 70 fastening with back outer end cap 90 before being stamped respectively on the both ends of the surface; The protecgulum of outer end cap 60 active axis hole 61 is on the same axis with the bonnet active axis hole 91 of back outer end cap 90 before described; The driven axis hole 62 of the protecgulum of outer end cap 60 is on the same axis with the driven axis hole 92 of bonnet of back outer end cap 90 before described, described driving shaft 11 and protecgulum initiatively between axis hole 61 and the bonnet active axis hole 91 for being slidingly matched; Between driven axis hole 62 of described driven shaft 12 and protecgulum and the driven axis hole 92 of bonnet for being slidingly matched, described master gear 51 and driving shaft 11 secure fit and between preceding outer end cap 60 and back outer end cap 90; Described from gear 52 and driven shaft 12 secure fit and between preceding outer end cap 60 and back outer end cap 90; Described master gear 51 be meshing with each other from gear 52; As improvement: described master gear 51 and between gear 52 and preceding outer end cap 60, end-face compensate dish 40 is arranged; And have on the described pump housing 80 and press path 30 in one, an end of interior pressure path 30 is being communicated with compensating disc backside cavity 43, and the other end of interior pressure path 30 is being communicated with exhaust port 84.
As further improvement: described end-face compensate dish 40 have compensating disc initiatively axis hole 411 and protecgulum initiatively axis hole 61 and bonnet initiatively axis hole 91 be on the same axis; Described end-face compensate dish 40 has the driven axis hole 412 of compensating disc to be on the same axis with driven axis hole 62 of protecgulum and the driven axis hole 92 of bonnet; The two semicircle external frames 48 of the compensating disc of described end-face compensate dish 40 are slidingly matched with two semicircle orifices 85; Described end-face compensate dish 40 back sides also have compensating disc backside cavity 43.
Embodiment's installation steps and working procedure are following.
Installation steps:
In Fig. 1, it is 17 numbers of teeth that embodiment selects master gear 51, also is 17 numbers of teeth from gear 52.Bolts 70 numbers of each side of the pump housing 80 are 6.
On a side end face of the pump housing 80, place gasket seal, rear end enclosing cover 90 is fixed on the side end face of the pump housing 80 with 6 bolts 70.
In the groove of bonnet active axis hole 91, put into driving shaft seal ring 21; In the groove of the driven axis hole 92 of bonnet, put into driven shaft seal ring 22.
With the appropriate location of master gear 51 stationary at driving shaft 11; Will be from the appropriate location of gear 52 stationary at driven shaft 12.Short exposed junction with driving shaft 11 inserts in the bonnet active axis hole 91 again; The short exposed junction of driven shaft 12 inserts in the driven axis hole 92 of bonnet, master gear 51 be meshing with each other from gear 52, make master gear 51 and pasting the inner plane of back outer end cap 90 from a side end face of gear 52.
With the horizontal frontal plane of end-face compensate dish 40 towards master gear 51 with from gear 52; Let compensating disc active axis hole 411 be inserted in the long exposed junction of driving shaft 11; Let the driven axis hole 412 of compensating disc be inserted in the long exposed junction of driven shaft 12; Make master gear 51 and pasting the horizontal frontal plane of end-face compensate dish 40 from the opposite side end face of gear 52, the two semicircle external frames 48 of compensating disc are slidingly matched with two semicircle orifices 85.
In the groove of protecgulum active axis hole 61 and in the groove of the driven axis hole 62 of protecgulum, put into driving shaft seal ring 21 and driven shaft seal ring 22 respectively.
On the opposite side end face of the pump housing 80, place gasket seal; Preceding outer end cap 60 is fixed on the opposite side end face of the pump housing 80 with 6 bolts 70; Make the long exposed junction of driving shaft 11 pass through initiatively axis hole 61 of protecgulum, driving shaft keyway 17 is in outside the preceding outer end cap 60; The long exposed junction of driven shaft 12 passed through the driven axis hole 62 of protecgulum.Have on the pump housing 80 and press path 30 in one, an end of interior pressure path 30 is being communicated with compensating disc backside cavity 43, and the other end of interior pressure path 30 is being communicated with exhaust port 84.
During the work operation:
In Fig. 2, external force,, is ordered about from gear 52 opposite spins through master and slave gear engagement by driving shaft 11 related master gears 51 rotations through driving shaft keyway 17 input, master gear 51 cylindricals and all be slidingly matched with two semicircle orifices from gear 52 cylindricals.
Master gear 51 and from gear 52 when rotated through adjacent two tooth working spaces, constantly bring liquid working media into adjacent two tooth working spaces from suction port 86, after the rotation semi-circumference, squeeze exhaust port 84, go round and begin again.The interior end of path 30 of pressing is being communicated with compensating disc backside cavity 43; The interior the other end of path 30 of pressing is being communicated with exhaust port 84; The axial force that is produced in compensating disc backside cavity 43 by means of interior pressure passageway 30; Make the horizontal frontal plane of end-face compensate dish 40 be close to master gear 51 and from a side plane of gear 52; Force master gear 51 and be close to the inner plane of outer end cap 90 afterwards, constitute axial end wear compensation gap control technology, guarantee that gear pump is in high-efficiency operation all the time from the opposite side Transverse plane of gear 52.

Claims (2)

1. pressure passageway compensation gear pump in a kind; Comprise driving shaft (11), driven shaft (12), master gear (51), from gear (52), end-face compensate dish (40), preceding outer end cap (60), bolts (70), the pump housing (80), back outer end cap (90); The both ends of the surface of the described pump housing (80) are vertical each other with two semicircle orifices (85), be stamped respectively on the both ends of the surface preceding outer end cap (60) and afterwards outer end cap (90) all have bolts (70) fastening; The protecgulum of outer end cap (60) active axis hole (61) is on the same axis with the bonnet active axis hole (91) of back outer end cap (90) before described; The driven axis hole of protecgulum (62) of outer end cap (60) is on the same axis with the driven axis hole of bonnet (92) of back outer end cap (90) before described, described driving shaft (11) and protecgulum initiatively between axis hole (61) and the bonnet active axis hole (91) for being slidingly matched; Between described driven shaft (12) and the driven axis hole of protecgulum (62) and the driven axis hole of bonnet (92) for being slidingly matched, described master gear (51) and driving shaft (11) secure fit and be positioned at preceding outer end cap (60) and back outer end cap (90) between; Described from gear (52) and driven shaft (12) secure fit and be positioned at preceding outer end cap (60) and back outer end cap (90) between; Described master gear (51) be meshing with each other from gear (52); It is characterized in that: described master gear (51) and between gear (52) and preceding outer end cap (60), end-face compensate dish (40) is arranged; And have on the described pump housing (80) and press path (30) in one; The interior end of path (30) of pressing is being communicated with compensating disc backside cavity (43), and the other end of interior pressure path (30) is being communicated with exhaust port (84).
2. a kind of interior pressure passageway compensation gear pump according to claim 1, it is characterized in that: described end-face compensate dish (40) has compensating disc active axis hole (411) and protecgulum active axis hole (61) and bonnet active axis hole (91) to be on the same axis; Described end-face compensate dish (40) has the driven axis hole of compensating disc (412) and driven axis hole of protecgulum (62) and the driven axis hole of bonnet (92) to be on the same axis; The two semicircle external frames (48) of the compensating disc of described end-face compensate dish (40) are slidingly matched with two semicircle orifices (85); Described end-face compensate dish (40) back side also has compensating disc backside cavity (43).
CN2011205796601U 2011-12-23 2011-12-23 Internal pressure channel compensated gear pump CN202370840U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205796601U CN202370840U (en) 2011-12-23 2011-12-23 Internal pressure channel compensated gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205796601U CN202370840U (en) 2011-12-23 2011-12-23 Internal pressure channel compensated gear pump

Publications (1)

Publication Number Publication Date
CN202370840U true CN202370840U (en) 2012-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205796601U CN202370840U (en) 2011-12-23 2011-12-23 Internal pressure channel compensated gear pump

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536798A (en) * 2011-12-23 2012-07-04 张意立 Compensation gear pump for internal-pressure passage
CN102926998A (en) * 2012-10-28 2013-02-13 张意立 Internal and external thread self-balancing gear pump
CN102927000A (en) * 2012-12-06 2013-02-13 张意立 Self-sealing gear pump
CN103195706A (en) * 2013-03-28 2013-07-10 宁波大红鹰学院 Gear pump with new structure
CN103195705A (en) * 2013-03-28 2013-07-10 宁波大红鹰学院 Gear pump made of new structural material
CN103967781A (en) * 2013-04-22 2014-08-06 宁波大红鹰学院 Novel gear pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536798A (en) * 2011-12-23 2012-07-04 张意立 Compensation gear pump for internal-pressure passage
CN102536798B (en) * 2011-12-23 2016-09-21 温州市张衡科技服务有限公司 A kind of compensation gear pump for internal-pressure passage
CN102926998A (en) * 2012-10-28 2013-02-13 张意立 Internal and external thread self-balancing gear pump
CN102926998B (en) * 2012-10-28 2016-04-27 张意立 A kind of internal and external threads Equilibrium gear pump
CN102927000B (en) * 2012-12-06 2015-02-25 张意立 Self-sealing gear pump
CN102927000A (en) * 2012-12-06 2013-02-13 张意立 Self-sealing gear pump
CN103195706A (en) * 2013-03-28 2013-07-10 宁波大红鹰学院 Gear pump with new structure
CN103195705A (en) * 2013-03-28 2013-07-10 宁波大红鹰学院 Gear pump made of new structural material
CN103967781A (en) * 2013-04-22 2014-08-06 宁波大红鹰学院 Novel gear pump

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120808

Termination date: 20121223