CN202370832U - Internal pressure channel compensated inner and outer gear pump - Google Patents
Internal pressure channel compensated inner and outer gear pump Download PDFInfo
- Publication number
- CN202370832U CN202370832U CN2011205268969U CN201120526896U CN202370832U CN 202370832 U CN202370832 U CN 202370832U CN 2011205268969 U CN2011205268969 U CN 2011205268969U CN 201120526896 U CN201120526896 U CN 201120526896U CN 202370832 U CN202370832 U CN 202370832U
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- enclosing cover
- main shaft
- pump housing
- hole
- external gear
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Abstract
An internal pressure channel compensated inner and outer gear pump comprises a driving shaft, an outer gear, an internal pressure channel, an end face compensation disc, an inner gear, a front end outer cover, end cover screws, a pump body, a rear end outer cover and a crescent isolation block, wherein the two end faces of the pump body are vertical to an inner hole of the pump body, and the front end outer cover and the rear end outer cover covered on the two end faces are respectively fastened by the end cover screws; the eccentric distance between a front cover hole with a seal groove and the inner hole of the pump body is T, and the eccentric distance between a rear cover hole with a seal groove and the inner hole of the pump body is also T; the driving shaft comprises a main shaft key section with a main shaft key groove and a main shaft keyless section, and the outer gear and the driving shaft are matched in a static way; as improvements, the end face compensation disc is arranged between the inner gear and the front end outer cover, a crescent groove is arranged on the front plane of the compensation disc, the eccentric distance between the excircle of the compensation disc and an eccentric hole of the compensation disc is also T, and the excircle of the compensation disc is matched with the inner hole of the pump body in a sliding way; in addition, a cavity on the back surface of the compensation disc is communicated with one end of the internal pressure channel, and the other end of the internal pressure channel is communicated with a discharge port.
Description
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 external gear pump in the pressure passageway compensation.
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 CN1316162C 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 external gear pump in a kind of interior pressure passageway compensation; 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: external gear pump in the pressure passageway compensation in a kind of; Comprise driving shaft, external gear, interior pressure passageway, end-face compensate dish, internal gear, front end enclosing cover, bolts, the pump housing, rear end enclosing cover and crescent shape spacing block; The both ends of the surface of the described pump housing are vertical each other with pump housing endoporus, and front end enclosing cover that is stamped respectively on the both ends of the surface and rear end enclosing cover use bolts fastening respectively; The band seal groove bonnet hole of the band seal groove protecgulum hole of described front end enclosing cover and rear end enclosing cover is on the same axis, and the eccentric distance of band seal groove protecgulum hole and pump housing endoporus is T, and the eccentric distance of band seal groove bonnet hole and pump housing endoporus also is T; Described driving shaft comprises that the main shaft of band main shaft keyway has key section and main shaft not to have the key section, and external gear and driving shaft be static to be cooperated and have key section and main shaft not to have between the key section at main shaft; Main shaft has key section and band seal groove protecgulum hole to be slidingly matched, and main shaft does not have the key section and is slidingly matched with band seal groove bonnet hole; Described internal gear equates with the external gear width and all in the pump housing endoporus between front end enclosing cover and rear end enclosing cover, the concentric cylindrical and the pump housing endoporus of internal gear are slidingly matched; External gear and the engagement of internal gear one side; As improvement: between described internal gear and the front end enclosing cover end-face compensate dish is arranged; On the compensating disc horizontal frontal plane crescent is arranged, the eccentric distance of compensating disc cylindrical and compensating disc eccentric opening also is T, and compensating disc cylindrical and pump housing endoporus are slidingly matched; And press an end of path in the compensating disc backside cavity is being communicated with, the other end of interior pressure path is being communicated with exhaust port.
As further improvement: the inner concave arc surface of described crescent shape spacing block one end is slidingly matched with outer convex globoidal and crescent, and the plane is fixedly connected in the other end plane and the rear end enclosing cover.
As further improvement: be stamped suction tank outside the described rear end and be communicated with the suction runner, be connected with suction port again; There is drain tank being communicated with the discharge runner, is connected with exhaust port again.
As further improvement: the back side of described end-face compensate dish has an end of positioning hole and locating stud to be slidingly matched, and the other end of locating stud is fixedly connected with the inboard face of front end enclosing cover.
Structural principle:
External force by the related external gear rotation of driving shaft, through inside and outside gear engagement, is ordered about the equidirectional rotation of internal gear through the input of main shaft keyway, and the concentric cylindrical and the pump housing endoporus of internal gear are slidingly matched.One Transverse plane of crescent shape spacing block be fixed on the rear end enclosing cover in the plane, the inner concave arc surface of crescent shape spacing block and the top circle of external gear are slidingly matched; The outer convex globoidal of crescent shape spacing block and the top circle of internal gear are slidingly matched, and constitute radial clearance control.
Internal gear equates that with the external gear width the inboard face of rear end enclosing cover is being pasted in a side, and straight and even of compensating disc is being pasted in the another side.The plane is fixedly connected in crescent shape spacing block one Transverse plane and the rear end enclosing cover; The inner concave arc surface of the other end is slidingly matched with outer convex globoidal and crescent; Give the guide-localization effect of playing that moves axially of face compensating disc; Use the compensating disc backside cavity and be communicated with exhaust port through interior pressure path; Interior axial reaction force of pressing path to the compensating disc backside cavity constitutes axial end wear compensation gap control technology.
Each between cog volume space progressively diminishes when being rotated in drain tank one side, through discharging runner again outside the exhaust port excavationg pump; Progressively become big when being rotated in suction tank one side, via sucking runner again outside the suction port excavationg pump.Realize from exhaust port drain medium, going round and beginning again after the supercharging continuously from suction port inhalant liquid body medium.
The beneficial effect of the utility model is: the inner concave arc surface of crescent shape spacing block is slidingly matched with outer convex globoidal and crescent; Use the compensating disc backside cavity and be communicated with exhaust port through interior pressure path; Interior axial reaction force of pressing path to the compensating disc backside cavity; Guarantee that each between cog volume space when effectively the control radial clearance is controlled, also possesses end wear compensate for clearance control technique.
Description of drawings
Fig. 1 is the sectional drawing of the utility model integral body through main axis, and the Q-Q sectional view among Fig. 2;
Fig. 2 is the sectional drawing in M-M cross section among Fig. 1;
Fig. 3 is the P-P sectional view among Fig. 2;
Fig. 4 is the stereogram of crescent shape spacing block 25;
Fig. 5 is the stereogram of end-face compensate dish 40 back side;
Fig. 6 is the stereogram of end-face compensate dish 40 face side.
Embodiment
In conjunction with accompanying drawing and embodiment, further structure and the working principle to the utility model elaborates.
External gear pump in the pressure passageway compensation in a kind of; Comprise driving shaft 10, external gear 20, interior pressure passageway 30, end-face compensate dish 40, internal gear 50, front end enclosing cover 60, bolts 70, the pump housing 80, rear end enclosing cover 90 and crescent shape spacing block 25; The both ends of the surface of the described pump housing 80 are vertical each other with pump housing endoporus 85, are stamped front end enclosing cover 60 on the both ends of the surface respectively and use bolts 70 fastening respectively with rear end enclosing cover 90; The band seal groove protecgulum hole 61 of described front end enclosing cover 60 is on the same axis with the band seal groove bonnet hole 91 of rear end enclosing cover 90; Band seal groove protecgulum hole 61 is T with the eccentric distance of pump housing endoporus 85, and band seal groove bonnet hole 91 also is T with the eccentric distance of pump housing endoporus 85; Described driving shaft 10 comprises that the main shaft of band main shaft keyway 12 has key section 11 and main shaft not to have key section 13, and external gear 20 and driving shaft 10 be static to be cooperated and have key section 11 and main shaft not to have between the key section 13 at main shaft; Main shaft has key section 11 and band seal groove protecgulum hole 61 to be slidingly matched, and main shaft does not have key section 13 and is slidingly matched with band seal groove bonnet hole 91; Described internal gear 50 equates with external gear 20 width and all in the pump housing endoporus 85 between front end enclosing cover 60 and rear end enclosing cover 90, the concentric cylindrical and the pump housing endoporus 85 of internal gear 50 are slidingly matched; External gear 20 and the engagement of internal gear 50 1 sides; Opposite side has crescent shape spacing block 25 to be arranged in the space that eccentric distance T is produced; As improvement: between described internal gear 50 and the front end enclosing cover 60 end-face compensate dish 40 is arranged; Crescent 49 is arranged on the compensating disc horizontal frontal plane 45, and compensating disc cylindrical 48 also is T with the eccentric distance of compensating disc eccentric opening 41, and compensating disc cylindrical 48 is slidingly matched with pump housing endoporus 85; And press an end of path 30 in compensating disc backside cavity 44 is being communicated with, the other end of interior pressure path 30 is being communicated with exhaust port 84.
As further improvement: the inner concave arc surface 92 of described crescent shape spacing block 25 1 ends is slidingly matched with outer convex globoidal 95 and crescent 49, and the plane is fixedly connected in the other end plane and the rear end enclosing cover 90.
As further improvement: described rear end enclosing cover 90 has suction tank 56 being communicated with suction runner 96, is connected with suction port 86 again; There is drain tank 54 being communicated with discharge runner 94, is connected with exhaust port 84 again.
As further improvement: the back side of described end-face compensate dish 40 has a positioning hole 42 and an end of locating stud 46 to be slidingly matched, and the other end of locating stud 46 is fixedly connected with the inboard face of front end enclosing cover 60.
Embodiment's installation steps and working procedure are following.
Installation steps:
In Fig. 1, Fig. 3, it is 14 numbers of teeth that embodiment selects internal gear 50, and external gear 20 is 11 numbers of teeth, and bolts 70 numbers of each side of the pump housing 80 are 4.
The plane is fixedly connected in thread form spacing block 25 1 Transverse planes and the rear end enclosing cover 90.Pad is put gasket seal 98 between the end face of rear end enclosing cover 90 and the pump housing 80 1 sides, with 4 bolts 70 rear end enclosing cover 90 is fixed on the end face of the pump housing 80 1 sides.
There are key section 11 and main shaft not to have between the key section 13 at the main shaft of driving shaft 10 external gear 20 stationary; Again driving shaft 10 and external gear 20 are placed in the pump housing endoporus 85 together; One side plane of external gear 20 pasting rear end enclosing cover 90 in the plane, wherein main shaft does not have key section 13 and penetrates in the band seal groove bonnet hole 91 and be slidingly matched.
The concentric cylindrical of internal gear 50 and pump housing endoporus 85 are slidingly matched and pack into, a side plane of internal gear 50 pasting rear end enclosing cover 90 in the plane.
With the compensating disc horizontal frontal plane 45 of end-face compensate dish 40 towards internal gear 50; Let compensating disc eccentric opening 41 flip sleeves go into main shaft key section 11 is arranged; Crescent 49 is aimed at crescent shape spacing block 25; Make inner concave arc surface 92 and outer convex globoidal 95 be slidingly matched, play positioning action simultaneously, thereby end-face compensate dish 40 has key section 11 can only make axial slip with respect to main shaft to eccentric distance T with crescent 49.
Pad is put gasket seal 68 on the opposite side end face of the pump housing 80, and an end of locating stud 46 is fixed on the inboard face of front end enclosing cover 60, lets the other end of locating stud 46 and positioning hole 42 be slidingly matched, and plays positioning action for the eccentric distance T of front end enclosing cover 60.Cover front end enclosing cover 60 backs and with 4 bolts 70 front end enclosing cover 60 is fixed on the end face of the pump housing 80 opposite sides, make compensating disc backside cavity 44 be communicated with an interior end of pressing path 30, the other end of interior pressure path 30 is being communicated with exhaust port 84.
There is preceding seal ring 16 at band 61 places, seal groove protecgulum hole, and there is back seal ring 19 at band 91 places, seal groove bonnet hole.
During the work operation:
In Fig. 2, Fig. 4, external force by driving shaft 10 related external gear 20 rotations, through inside and outside gear engagement, is ordered about internal gear 50 equidirectional rotations through 12 inputs of main shaft keyway, and the concentric cylindrical and the pump housing endoporus 85 of internal gear 50 are slidingly matched.One Transverse plane of crescent shape spacing block 25 be fixed on rear end enclosing cover 90 in the plane, the top circle of inner concave arc surface 92 external gears 20 of crescent shape spacing block 25 is slidingly matched; The outer convex globoidal 95 of crescent shape spacing block 25 is slidingly matched with the top circle of internal gear 50, constitutes radial clearance control.
Each between cog volume space progressively diminishes when being rotated in drain tank 54 1 sides, through discharging runner 94 again outside exhaust port 84 excavationg pumps; Progressively become big when being rotated in suction tank 56 1 sides, via sucking runner 96 again outside suction port 86 excavationg pumps.Realize from exhaust port 84 drain media, going round and beginning again after the supercharging continuously from suction port 86 inhalant liquid body mediums.
Claims (4)
1. external gear pump in the pressure passageway compensation in a kind; Comprise driving shaft (10), external gear (20), interior pressure passageway (30), end-face compensate dish (40), internal gear (50), front end enclosing cover (60), bolts (70), the pump housing (80), rear end enclosing cover (90) and crescent shape spacing block (25); The both ends of the surface of the described pump housing (80) are vertical each other with pump housing endoporus (85), and front end enclosing cover (60) that is stamped respectively on the both ends of the surface and rear end enclosing cover (90) use bolts (70) fastening respectively; The band seal groove protecgulum hole (61) of described front end enclosing cover (60) is on the same axis with the band seal groove bonnet hole (91) of rear end enclosing cover (90); Band seal groove protecgulum hole (61) is T with the eccentric distance of pump housing endoporus (85), and band seal groove bonnet hole (91) also is T with the eccentric distance of pump housing endoporus (85); Described driving shaft (10) comprises that the main shaft of band main shaft keyway (12) has key section (11) and main shaft not to have key section (13), and external gear (20) and driving shaft (10) be static to be cooperated and be positioned at main shaft has key section (11) and main shaft not to have between the key section (13); Main shaft has key section (11) and band seal groove protecgulum hole (61) to be slidingly matched, and main shaft does not have key section (13) and is slidingly matched with band seal groove bonnet hole (91); Described internal gear (50) equates with external gear (20) width and all is arranged in the pump housing endoporus (85) between front end enclosing cover (60) and the rear end enclosing cover (90) that the concentric cylindrical of internal gear (50) and pump housing endoporus (85) are slidingly matched; External gear (20) and the engagement of internal gear (50) one sides; It is characterized in that: between described internal gear (50) and the front end enclosing cover (60) end-face compensate dish (40) is arranged; Crescent (49) is arranged on the compensating disc horizontal frontal plane (45); Compensating disc cylindrical (48) also is T with the eccentric distance of compensating disc eccentric opening (41), and compensating disc cylindrical (48) is slidingly matched with pump housing endoporus (85); And press an end of path (30) in compensating disc backside cavity (44) is being communicated with, the other end of interior pressure path (30) is being communicated with exhaust port (84).
2. external gear pump in a kind of interior pressure passageway compensation according to claim 1; It is characterized in that: the inner concave arc surface (92) of described crescent shape spacing block (25) one ends and outer convex globoidal (95) are slidingly matched with crescent (49), and the plane is fixedly connected in the other end plane and the rear end enclosing cover (90).
3. external gear pump in a kind of interior pressure passageway compensation according to claim 1, it is characterized in that: described rear end enclosing cover (90) has suction tank (56) being communicated with suction runner (96), is connected with suction port (86) again; There is drain tank (54) being communicated with discharge runner (94), is connected with exhaust port (84) again.
4. external gear pump in a kind of interior pressure passageway compensation according to claim 1; It is characterized in that: the back side of described end-face compensate dish (40) has a positioning hole (42) and an end of locating stud (46) to be slidingly matched, and the other end of locating stud (46) is fixedly connected with the inboard face of front end enclosing cover (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205268969U CN202370832U (en) | 2011-12-06 | 2011-12-06 | Internal pressure channel compensated inner and outer gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205268969U CN202370832U (en) | 2011-12-06 | 2011-12-06 | Internal pressure channel compensated inner and outer gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370832U true CN202370832U (en) | 2012-08-08 |
Family
ID=46594537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205268969U Expired - Fee Related CN202370832U (en) | 2011-12-06 | 2011-12-06 | Internal pressure channel compensated inner and outer gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370832U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518587A (en) * | 2011-12-06 | 2012-06-27 | 张意立 | Compensating internal-external gear pump for internal pressure passage |
| 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 |
-
2011
- 2011-12-06 CN CN2011205268969U patent/CN202370832U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518587A (en) * | 2011-12-06 | 2012-06-27 | 张意立 | Compensating internal-external gear pump for internal pressure passage |
| CN102518587B (en) * | 2011-12-06 | 2015-04-01 | 温州市张衡科技服务有限公司 | Compensating internal-external gear pump for internal pressure passage |
| CN102927000A (en) * | 2012-12-06 | 2013-02-13 | 张意立 | Self-sealing gear pump |
| CN102927000B (en) * | 2012-12-06 | 2015-02-25 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121206 |