CN106151026A - A kind of kneading type booster pump - Google Patents

A kind of kneading type booster pump Download PDF

Info

Publication number
CN106151026A
CN106151026A CN201510191188.7A CN201510191188A CN106151026A CN 106151026 A CN106151026 A CN 106151026A CN 201510191188 A CN201510191188 A CN 201510191188A CN 106151026 A CN106151026 A CN 106151026A
Authority
CN
China
Prior art keywords
chamber
slide
pump
water inlet
delivery port
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201510191188.7A
Other languages
Chinese (zh)
Inventor
程振华
王治清
王梓璤
程子昊
Original Assignee
王治清
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.)
Filing date
Publication date
Application filed by 王治清 filed Critical 王治清
Priority to CN201510191188.7A priority Critical patent/CN106151026A/en
Publication of CN106151026A publication Critical patent/CN106151026A/en
Pending legal-status Critical Current

Links

Abstract

The present invention proposes a kind of kneading type booster pump, including the pump housing group of plural parallel stage and pressurized cylinder, it is equipped with a water inlet and a delivery port bottom the described pump housing at different levels, described pressurized cylinder includes multiple chamber, the quantity of described chamber is identical with the total quantity of pump housing group water inlet and delivery port, described pressurized cylinder is arranged on below pump housing group makes multiple chamber connect with multiple water inlet and the delivery port one_to_one corresponding of pump housing group respectively, described pump housing group is bolted to connection with pressurized cylinder, is additionally provided with the multiple pod apertures connecting multiple chambers in described pressurized cylinder.The present invention utilizes staggered floor construction to make full use of material overall space, reduce spillage of material, it is easy to process and sturdy and durable, main parts size uses the materials such as pottery, polytetrafluoroethylene (PTFE) or nylon to make, not perishable, solve pump housing circular motion and the problem that frictional dissipation is big, mechanical efficiency is low moving along a straight line when running simultaneously up and down.

Description

A kind of kneading type booster pump
Technical field
The present invention relates to pump technology field, particularly relate to a kind of kneading type booster pump.
Background technology
Booster pump is conveying liquid or the machinery making fluid pressurization, and it is by outside the mechanical energy of prime mover or other Energy sends liquid to so that liquid energy increase, be widely used for water supply, blowdown, architectural engineering, Systems such as hydraulic engineering, and in the design of traditional booster pump, generally also exist that structure is complicated, frictional dissipation is big, The problems such as mechanical efficiency is low.
Content of the invention
The present invention proposes a kind of novel kneading type booster pump, improves the conversion efficiency of mechanical energy, solves The above-mentioned problems in the prior art.
The technical scheme is that and be achieved in that:
A kind of kneading type booster pump, including the pump housing group of plural parallel stage and pressurized cylinder, at the bottom of the described pump housings at different levels Portion is equipped with a water inlet and a delivery port, and described pressurized cylinder includes multiple chamber, the quantity of described chamber Identical with the total quantity of pump housing group water inlet and delivery port, described pressurized cylinder be arranged on make below pump housing group multiple Chamber connects with multiple water inlet and the delivery port one_to_one corresponding of pump housing group respectively, described pump housing group and pressurized cylinder It is bolted to connection, in described pressurized cylinder, be additionally provided with the multiple pod apertures connecting multiple chambers.
As a further improvement on the present invention, described pump body structure at different levels is identical, including cylinder, plug wheel, convex Wheel eccentric shaft and rub plane bearing, described cam pivot hole is eccentrically set in cylinder, described plug wheel with Cam pivot hole is arranged concentrically, described plug wheel with cylinder inboard wall between formed crescent cavity, described rub flat In spherical bearing is arranged on plug wheel and being connected with cylinder, described cylinder is provided with water inlet and delivery port, described enter The mouth of a river and delivery port are separately positioned on the both sides rubbing plane bearing.
As a further improvement on the present invention, described pump housing group includes first-stage pump body, second-stage pump body and three grades The pump housing, described first-stage pump body is provided with the first water inlet and the first delivery port, and described second-stage pump body is provided with second Water inlet and the second delivery port, described triplex body is provided with the 3rd water inlet and the 3rd delivery port, described Pressurized cylinder includes the first chamber, the second chamber, the 3rd chamber, the 4th chamber, the 5th chamber and the 6th chamber Room.
As a further improvement on the present invention, described first water inlet and the first chamber, described first goes out The mouth of a river and the second chamber, described second water inlet and the 3rd chamber, described second delivery port and the Four chamber, described 3rd water inlet and the 5th chamber, described 3rd delivery port and the 6th chamber are even Logical.
As a further improvement on the present invention, six chambers of described pressurized cylinder are grooved staggered floor construction, each Being provided with a step in chamber, chamber, less than the degree of depth of chamber, is divided into the degree of depth different by the height of described step Two parts.
As a further improvement on the present invention, it is provided with the first pod apertures and the second pod apertures in described pressurized cylinder, Described first pod apertures connection the second chamber and the 4th chamber, described second pod apertures connects the 3rd chamber and the Five chambers, described first pod apertures is equipped with one-way overflow valve with the port of the second pod apertures.
As a further improvement on the present invention, described kneading type plane bearing includes an axle center dividing plate, sliding in two Moving plate and two outer slides, dividing plate one end, described axle center is fixed on cylinder inboard wall, slide in described two It is separately positioned on the both sides of axle center dividing plate, in described two, outside slide, be respectively provided with an outer slide.
As a further improvement on the present invention, described interior slide is semicircle, and slides in semicircle The diameter two ends of piece are provided with rectangular projections, and described outer slide is semi-circular shape, and along outside semi-circular shape The outer surface of slide is provided with multiple lug boss, and described outer slide is fixedly installed in plug wheel by lug boss.
As a further improvement on the present invention, described interior slide is provided with some along semicircular circumferencial direction First needle roller groove, is provided with the first needle roller in described first needle roller groove, described outer slide can be by the first rolling Pin does circumference along interior slide and moves back and forth.
As a further improvement on the present invention, dividing plate both sides, described axle center are provided with some second needle roller grooves, described Being provided with the second needle roller in second needle roller groove, described interior slide can be done along axle center dividing plate by the second needle roller Lower reciprocating linear slides.
The invention has the beneficial effects as follows:
Present inventive concept is novel, deft design, utilizes staggered floor construction to make full use of material overall space, reduces Spillage of material, it is easy to process and sturdy and durable, main parts size uses pottery, polytetrafluoroethylene (PTFE) or nylon etc. Material is made, not perishable, solves pump housing circular motion and the friction moving along a straight line when running simultaneously up and down The problem that loss is big, mechanical efficiency is low, can be greatly enhanced plug wheel speed and job stability, can be extensive Be applied to desalinization pump, wind-driven water pump, high-pressure service fire pump etc. to booster pump mechanical efficiency require higher Technical field.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to required in embodiment The accompanying drawing using is briefly described, it should be apparent that, the accompanying drawing in describing below is only the one of the present invention A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of pressurized cylinder of the present invention;
Fig. 3 is the top view of pressurized cylinder of the present invention;
Fig. 4 is the structural representation of first-stage pump body of the present invention;
Fig. 5 is the structural representation that the present invention rubs plane bearing.
Figure marks: 1-first-stage pump body;11-the first water inlet;12-the first delivery port;13-cylinder;14-fills in Wheel;The oval chamber of 141-;142-circular chamber;143-opening;15-cam pivot hole;16-rubs plane Bearing;161-axle center dividing plate;161a-the second needle roller groove;Slide in 162-;162a-protuberance;162b- One needle roller groove;The outer slide of 163-;163a-lug boss;164-the first needle roller;165-the second needle roller;The 17-month Thread form cavity;2-second-stage pump body;21-the second water inlet;22-the second delivery port;3-triplex body;31-the 3rd Water inlet;32-the 3rd delivery port;4-pressurized cylinder;41-the first chamber;42-the second chamber;43-the 3rd chamber; 44-the 4th chamber;45-the 5th chamber;46-the 6th chamber;47-the first pod apertures;48-the second pod apertures;49- Step.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly It Chu, is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention, rather than Whole embodiments.
As shown in Figure 1 to Figure 3, a kind of kneading type booster pump, including three grades of pump housing groups in parallel and supercharging Cylinder 4, pump housing group includes first-stage pump body the 1st, second-stage pump body 2 and triplex body 3, and pressurized cylinder 4 includes six Chamber, pressurized cylinder 4 is arranged on below pump housing group, and is connected with pump housing group by bolt.
First-stage pump body 1 is provided with the first water inlet 11 and the first delivery port 12, and pressurized cylinder 4 includes the first chamber 41 and second chamber 42, the first water inlet 11 connects with the first chamber 41, the first delivery port 12 and Two chambers 42 connect.
Second-stage pump body 2 is provided with the second water inlet 21 and the second delivery port 22, and pressurized cylinder 4 includes the 3rd chamber 43 and the 4th chamber 44, the second water inlet 21 connects with the 3rd chamber 43, the second delivery port 22 and Four chambers 44 connect.
Triplex body 3 is provided with the 3rd water inlet 31 and the 3rd delivery port 32, and pressurized cylinder 4 includes the 5th chamber 45 and the 6th chamber 46, the 3rd water inlet 31 connects with the 5th chamber 45, the 3rd delivery port 32 and Six chambers 46 connect.
Pressurized cylinder 4 is additionally provided with the first pod apertures 47 and the second pod apertures 48, and six chambers are grooved staggered floor Structure, is provided with a step 49 in each chamber, chamber, less than the degree of depth of chamber, is separated by the height of step 49 For the different two parts of the degree of depth.
First pod apertures 47 connects the second chamber 42 and the 4th chamber 44, and the second pod apertures 48 connects the 3rd chamber Room 43 and the 5th chamber 45, the port of the first pod apertures 47 and the second pod apertures 48 is equipped with one-way overflow valve (not shown).
Owing to the pump body structures at different levels of the present invention are identical, therefore in the present embodiment only as a example by first-stage pump body 1, The structure of the pump housing at different levels is described.
As shown in Figure 4, first-stage pump body 1 includes that the 13rd, cylinder is filled in wheel the 14th, cam pivot hole 15 and rubbed Plane bearing 16, cam pivot hole 15 is eccentrically set in cylinder 13, plug wheel 14 and cam pivot hole 15 It is arranged concentrically, between plug wheel 14 and cylinder 13 inwall, form crescent cavity 17.
Plug wheel 14 is provided with an oval chamber 141 and and partly overlaps with oval chamber 141 and to arrange Circular chamber 142, oval chamber 141 is positioned above circular chamber 142, and the two constitutes Pear-Shaped.
Oval chamber 141 is arranged over opening 143, rubs plane bearing 16 and is arranged on oval chamber 141 In and be connected with cylinder 13 inwall, cylinder 13 is provided with the first water inlet 11 and the first delivery port 12, first Water inlet 11 and the first delivery port 12 are separately positioned on the both sides rubbing plane bearing 16.
As it is shown in figure 5, kneading type plane bearing 16, including an axle center dividing plate the 161st, slide 162 in two And two outer slides 163, axle center dividing plate 161 one end is fixed on cylinder 13 inwall, slide 162 in two It is separately positioned on the both sides of axle center dividing plate 161, and in two, slide 162 can do along axle center dividing plate 161 Upper and lower linear reciprocation is slided, and is respectively provided with an outer slide 163, and two outer slips in two outside slide 162 Piece 163 can respectively along two slide 162 do circumference move back and forth.(in figure, arrow represents interior slide 162 and the direction of motion of outer slide 163)
Interior slide 162 is semicircle, and the diameter two ends of slide 162 are provided with rectangle along semicircle Protuberance 162a.Outer slide 163 is semi-circular shape, and along the appearance of the outer slide 163 of semi-circular shape Face is provided with multiple lug boss 163a.
In two, slide 162 and two outer slides 163 are along the both sides of axle center dividing plate 161, can be symmetrically Formula is arranged, it is also possible to arrange in asymmetric, is beneficial to swinging of plug wheel 14.
It is provided with some first needle roller groove 162b, the first needle roller along semicircular circumferencial direction on interior slide 162 Being provided with the first needle roller 164 in groove 162b, the sub-fraction of the first needle roller 164 exposes the first needle roller groove 162b, Make outer slide 163 can do circumference by the first needle roller 164 along interior slide 162 to move back and forth.
Axle center dividing plate 161 both sides are provided with some second needle roller groove 161a, are provided with second in the second needle roller groove 161a Needle roller 165, the sub-fraction of the second needle roller 165 is exposed the second needle roller groove 161a, is made interior slide 162 energy Enough do upper and lower linear reciprocation by the second needle roller 165 along axle center dividing plate 161 to slide.
The material of axle center dividing plate the 161st, interior slide 162 and outer slide 163 is pottery, stainless steel, gathers Tetrafluoroethene or nylon.
The material of the first needle roller 164 and the second needle roller 165 is pottery, polytetrafluoroethylene (PTFE) or nylon.
Owing in the contour structures feature of the present invention, slide 162 is half for slide 163 semicircle, outer Annular, the present invention can remove the first needle roller 164 and the second needle roller 165, and a retaining shaft septum cordis plate is the 161st, Interior slide 162 and outer slide 163, be capable of equally axle center dividing plate 161 linear motion up and down and The circular motion of outer slide 163.
The operation principle of the present invention is as follows:
In conjunction with shown in Fig. 1 and Fig. 3, in Fig. 1, arrow show the flow direction of water, and water is from the first pod apertures The port of 47 enters the first chamber 41, then enters first-stage pump body 1 from the first water inlet 11, and along primary pump Cylinder 13 inwall of body 1 does and rubs rotation clockwise, i.e. the outer slide 163 of plug wheel 14 drive is along interior slip Piece 162 turns clockwise, and in driving, slide 162 is along axle center dividing plate 161 upward sliding simultaneously.
When plug wheel 14 rubs to cylinder 13 inwall vertex position, plug wheel 14 continuation is suitable along cylinder 13 inwall Hour hands are descending, slide 162 slide downward in simultaneously driving, when plug wheel 14 rubs again to cylinder 13 During wall vertex position, it becomes possible to water is extruded the first delivery port 12, completes one-level pressurization.
Water enters the second chamber 42 from the first delivery port 12, enters the 4th chamber 44 by the first pod apertures 47, And then enter second-stage pump body 2 by the second water inlet 21, after the secondary booster of second-stage pump body 2, from Two delivery ports 22 enter the 3rd chamber 43, then enter the 5th chamber 45 through the second pod apertures 48, then lead to Cross the 3rd water inlet 31 and enter triplex body 3, after three superchargings of triplex body 3, from the 3rd water outlet Mouth 32 entrance the 6th chambers 46, then flowed out by the port of the second pod apertures 48.
Said process completes three grades of pressurizing action of water, can be extended to the level Four pump housing in parallel according to this principle Group, Pyatyi pump housing group in parallel or even N level pump housing group in parallel.
Present inventive concept is novel, deft design, utilizes staggered floor construction to make full use of material overall space, reduces Spillage of material, it is easy to process and sturdy and durable, main parts size uses pottery, polytetrafluoroethylene (PTFE) or nylon etc. Material is made, not perishable, solves pump housing circular motion and the friction moving along a straight line when running simultaneously up and down The problem that loss is big, mechanical efficiency is low, can be greatly enhanced plug wheel speed and job stability, can be extensive Be applied to desalinization pump, wind-driven water pump, high-pressure service fire pump etc. to booster pump mechanical efficiency require higher Technical field.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims (10)

1. a kneading type booster pump, including the pump housing group of plural parallel stage and pressurized cylinder, it is characterised in that Being equipped with a water inlet and a delivery port bottom the described pump housing at different levels, described pressurized cylinder includes multiple chamber, The quantity of described chamber is identical with the total quantity of pump housing group water inlet and delivery port, and described pressurized cylinder is arranged on pump Multiple chamber is made to connect with multiple water inlet and the delivery port one_to_one corresponding of pump housing group respectively below body group, described Pump housing group and pressurized cylinder are bolted to connection, and are additionally provided with the multiple of the multiple chamber of connection in described pressurized cylinder Pod apertures.
2. dynamic formula booster pump according to claim 1, it is characterised in that described pump body structure phases at different levels With including cylinder, plug wheel, cam pivot hole and rub plane bearing, described cam eccentric eccentric shaft sets Putting in cylinder, described plug wheel is arranged concentrically with cam pivot hole, is formed between described plug wheel and cylinder inboard wall Crescent cavity, described rub plane bearing be arranged on plug wheel in and be connected with cylinder, described cylinder be provided with into The mouth of a river and delivery port, described water inlet and delivery port are separately positioned on the both sides rubbing plane bearing.
3. dynamic formula booster pump according to claim 1 and 2, it is characterised in that described pump housing group includes First-stage pump body, second-stage pump body and triplex body, described first-stage pump body is provided with the first water inlet and first and goes out The mouth of a river, described second-stage pump body is provided with the second water inlet and the second delivery port, and described triplex body is provided with the 3rd Water inlet and the 3rd delivery port, described pressurized cylinder include the first chamber, the second chamber, the 3rd chamber, Four chambers, the 5th chamber and the 6th chamber.
4. dynamic formula booster pump according to claim 3, it is characterised in that described first water inlet and One chamber, described first delivery port and the second chamber, described second water inlet and the 3rd chamber are even Logical, described second delivery port and the 4th chamber, described 3rd water inlet and the 5th chamber, described 3rd delivery port and the 6th chamber.
5. dynamic formula booster pump according to claim 4, it is characterised in that six chambeies of described pressurized cylinder Room is grooved staggered floor construction, is provided with a step in each chamber, and the height of described step is less than the degree of depth of chamber, Chamber is divided into the different two parts of the degree of depth.
6. dynamic formula booster pump according to claim 5, it is characterised in that be provided with in described pressurized cylinder One pod apertures and the second pod apertures, described first pod apertures connection the second chamber and the 4th chamber, described the Two pod apertures connection the 3rd chambers and the 5th chamber, described first pod apertures is all provided with the port of the second pod apertures There is one-way overflow valve.
7. dynamic formula booster pump according to claim 6, it is characterised in that described kneading type plane bearing Including an axle center dividing plate, slide and two outer slides in two, dividing plate one end, described axle center is fixed on cylinder On inwall, in described two, slide is separately positioned on the both sides of axle center dividing plate, each outside slide in described two It is provided with an outer slide.
8. dynamic formula booster pump according to claim 7, it is characterised in that described interior slide is semicircle Shape, and along semicircle, the diameter two ends of slide are provided with rectangular projections, and described outer slide is semicircle Annular, and it is provided with multiple lug boss along the outer surface of the outer slide of semi-circular shape, described outer slide passes through Lug boss is fixedly installed in plug wheel.
9. dynamic formula booster pump according to claim 8, it is characterised in that along half on described interior slide Circular circumferencial direction is provided with some first needle roller grooves, is provided with the first needle roller in described first needle roller groove, described Outer slide can do circumference by the first needle roller along interior slide and move back and forth.
10. dynamic formula booster pump according to claim 9, it is characterised in that dividing plate both sides, described axle center Being provided with some second needle roller grooves, being provided with the second needle roller in described second needle roller groove, described interior slide can lead to Cross the second needle roller and do up and down reciprocatingly linear slide along axle center dividing plate.
CN201510191188.7A 2015-04-21 2015-04-21 A kind of kneading type booster pump Pending CN106151026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510191188.7A CN106151026A (en) 2015-04-21 2015-04-21 A kind of kneading type booster pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510191188.7A CN106151026A (en) 2015-04-21 2015-04-21 A kind of kneading type booster pump

Publications (1)

Publication Number Publication Date
CN106151026A true CN106151026A (en) 2016-11-23

Family

ID=58058199

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510191188.7A Pending CN106151026A (en) 2015-04-21 2015-04-21 A kind of kneading type booster pump

Country Status (1)

Country Link
CN (1) CN106151026A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1607331A (en) * 2003-10-15 2005-04-20 徐衡 Full motion type compressor
CN101387296A (en) * 2008-10-23 2009-03-18 浙江鸿友压缩机制造有限公司 Static vane compressor
CN201412344Y (en) * 2009-05-20 2010-02-24 浙江鸿友压缩机制造有限公司 Positioning and connecting device for fixed blade compressor
CN201428613Y (en) * 2009-06-25 2010-03-24 宁波特懿动力科技有限公司 Spiral-flow type auxiliary air intake device and compression pump thereof
CN201448239U (en) * 2009-07-24 2010-05-05 广东美芝制冷设备有限公司 Compression structure of a rotary compressor
CN102105968A (en) * 2008-08-29 2011-06-22 洗涪技科技有限公司 Chemical liquid feeding device
WO2013162477A1 (en) * 2012-04-26 2013-10-31 Nanyang Technological University A vane mechanism
CN204061172U (en) * 2014-07-14 2014-12-31 天津市盛鑫隆粉末涂料有限公司 A kind of static vane air compressor
CN204984875U (en) * 2015-04-21 2016-01-20 王治清 Rub dynamic formula booster pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1607331A (en) * 2003-10-15 2005-04-20 徐衡 Full motion type compressor
CN102105968A (en) * 2008-08-29 2011-06-22 洗涪技科技有限公司 Chemical liquid feeding device
CN101387296A (en) * 2008-10-23 2009-03-18 浙江鸿友压缩机制造有限公司 Static vane compressor
CN201412344Y (en) * 2009-05-20 2010-02-24 浙江鸿友压缩机制造有限公司 Positioning and connecting device for fixed blade compressor
CN201428613Y (en) * 2009-06-25 2010-03-24 宁波特懿动力科技有限公司 Spiral-flow type auxiliary air intake device and compression pump thereof
CN201448239U (en) * 2009-07-24 2010-05-05 广东美芝制冷设备有限公司 Compression structure of a rotary compressor
WO2013162477A1 (en) * 2012-04-26 2013-10-31 Nanyang Technological University A vane mechanism
CN204061172U (en) * 2014-07-14 2014-12-31 天津市盛鑫隆粉末涂料有限公司 A kind of static vane air compressor
CN204984875U (en) * 2015-04-21 2016-01-20 王治清 Rub dynamic formula booster pump

Similar Documents

Publication Publication Date Title
CN101131152A (en) Constant-pressure variable radial-plunger pump
CN106151026A (en) A kind of kneading type booster pump
CN204493169U (en) The water inlet pipe component of water pump
CN204984875U (en) Rub dynamic formula booster pump
CN204283775U (en) A kind of many pump heads radial plunger pump
CN204267242U (en) Symmetric type radial plunger pump
CN106050681A (en) Water pump with double water outlets
CN106246517A (en) The water pump that a kind of magnetic force drives
CN108278186B (en) A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula space cam transmission
CN206346874U (en) The universal plunger pump of profit
CN204646702U (en) A kind of draining pump
CN204942996U (en) A kind of lubricant grease pumping system
CN207830115U (en) A kind of oil pump
CN103470464B (en) A kind of high pressure plunger water pump
CN202468243U (en) Rotary-plunger scale-prevention oil-well pump
CN110118172A (en) A kind of oil pump
CN204692111U (en) A kind of horizontal monoblock pump
CN204327477U (en) A kind of pressure regulation stop valve
CN209510547U (en) A kind of axial plunger pump
CN205876634U (en) Novel three vertical plunger reciprocating pumps
CN210859196U (en) High-speed impeller of vacuum pump
CN206280224U (en) A kind of practicality membrane pump
CN205895514U (en) To pressing formula axial plunger pump
CN206246352U (en) A kind of micro hydraulic gear pump single side floating side plate
CN209025905U (en) A kind of reversal valve

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination