CN203847338U - Low-power disc flow-distributing-plate-type radial plunger pump - Google Patents

Abstract

The utility model belongs to hydraulic elements, and particularly relates to a low-power disc flow-distributing-plate-type radial plunger pump. The left end and the right end of a shaft (1) are penetratingly mounted in an inner ring of a first bearing (9) respectively, the outer circumference of a cylinder body (2) is disposed in an inner ring of a second bearing (10), multiple plungers (3) are uniformly distributed and penetratingly mounted on the outer circumference of the cylinder body (2) movably, springs (4) are mounted between the cylinder body (2) and the plungers (3), one end of each spring (4) is supported and presses on a shoulder at the outer end of the corresponding plunger (3) while the other end of the same is supported and presses on a pit on the outer circumference of the cylinder body (2), a thrust plate (6) is mounted on a spline of the shaft (1) in a sleeved manner, and a first closed space A and a second closed space B are both communicated with a flow distributing disc (5) and the thrust plate (6). The low-power disc flow-distributing-plate-type radial plunger pump is compact in structure, small in size and high in efficiency.

Description

The board-like radial plunger pump of small-power dish flow

Technical field

The utility model belongs to hydraulic element, particularly the board-like radial plunger pump of a kind of small-power dish flow.

Background technique

So-called small-power plunger pump generally refers to that power is no more than the small displacement of 2Kw, mesolow plunger pump, also claims light-duty plunger pump.The flow form of traditional small-power radial plunger pump mostly is axle flow or valve flow, also there is a small amount of employing dish flow, but the non-perpendicular placement of relative axle that is plunger of its basic structure, the power that the dish necessary cylinder body of flow and thrust plate are close to is that the hydraulic coupling producing while being moved in cylinder bore by plunger realizes the axial thrust load of cylinder body self generation.In traditional small-power radial plunger pump, axle flow form due to simple in structure, compact application is the most extensive, but in the hydraulic equipment under outdoor environment, due to the working environment temperature difference large (40 DEG C ~ 70 DEG C), the matching gap of axle also has larger variation with the variation of the temperature difference, causes pump normally to work, and the radial plunger pump volume of valve flow is larger, dish flow distribution radial plunger pump structure is not too compact, also needs to use special nonstandard bearing.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of compact structure is provided, and can adapt to the working environment that the temperature difference is large, leaks less the board-like radial plunger pump of small-power dish flow that efficiency is high.

The technological scheme that the utility model technical solution problem adopts is: the board-like radial plunger pump of small-power dish flow comprises the pump housing, pump cover, axle, cylinder body, plunger, bearing one, bearing two, spring, outside framework oil seal, be characterized in that bearing one is contained in respectively on the pump housing and pump cover, a left side for axle, right two ends are installed on respectively in the interior ring of bearing one, thrust plate and bearing two are contained in respectively the right side of the pump housing, axle is through the endoporus of thrust plate, the relative axial centre of bearing two is eccentric places, cylinder body is sleeved on the spline of axle, the excircle of cylinder body is placed in the interior ring of bearing two, on the excircle of cylinder body, uniform activity installs multiple plungers, plunger shaft axis is mutually vertical with the shaft axis of axle, plunger to-and-fro motion in cylinder body respectively, the external end head of plunger withstands on respectively on the interior ring of bearing two, spring is housed respectively between cylinder body and plunger, spring is set on plunger, push up respectively on the shoulder that is pressed in plunger outer end one end of spring, the other end of spring pushes up respectively on stroke nest that is pressed in cylinder body excircle, thrust plate is sleeved on the spline of axle, the left side gap-contact of thrust plate connects the right side of cylinder body, the left side contact of cylinder body connects the right side of thrust plate, locking ring is threaded and is sleeved on the right-hand member of axle, the left side contact of locking ring connects the right side of thrust plate, when being placed in the below of axle, plunger forms enclosed space one between cylinder body and plunger interior edge face, when being placed in the top of axle, plunger forms enclosed space two between cylinder body and plunger interior edge face, enclosed space one and enclosed space two all communicate with thrust plate and thrust plate, position between cylinder body right side and the thrust plate of corresponding plunger the inner is provided with active area space.

The beneficial effects of the utility model are: the board-like radial plunger pump compact structure of small-power dish flow, and volume is little, and efficiency is high, good layout, is widely used in outdoor hydraulic equipment, is subject to the impact that the temperature difference is large little, reliable operation, easily repairs after friction surface wearing and tearing, easily makes two-way pump and multiplex pump.

Brief description of the drawings

Illustrate with embodiment below in conjunction with accompanying drawing.

Fig. 1 is the board-like radial plunger pump structure of small-power dish flow sectional view.

In figure, 1-axle; 2-cylinder body; 3-plunger; 4-spring; 5-thrust plate; 6-thrust plate; 7-locking ring; 8-seal ring; 9-bearing one; 10-bearing two; The 11-pump housing; 12-pump cover; 13-outside framework oil seal; A-enclosed space one; B-enclosed space two; C-active area space.

Embodiment

Embodiment, with reference to accompanying drawing 1, the bearing 1 of the board-like radial plunger pump of small-power dish flow is contained in respectively on the pump housing 11 and pump cover 12, and the left and right two ends of axle 1 are installed on respectively in the interior ring of bearing 1, between the pump housing 11 and axle 1, seal with outside framework oil seal 13.Thrust plate 5 and bearing 2 10 are contained in respectively the right side of the pump housing 11, and axle 1 is through the endoporus of thrust plate 5, and the main bias of the axial centre of bearing 2 10 relative axles 1 is placed, and cylinder body 2 is sleeved on the spline of axle 1.The excircle of cylinder body 2 is placed in the interior ring of bearing 2 10, on the excircle of cylinder body 2, uniform activity installs multiple plungers 3, the shaft axis of plunger 3 is mutually vertical with the shaft axis of axle 1, and plunger 3 is to-and-fro motion in cylinder body 2 respectively, and the external end head of plunger 3 pushes up respectively on the interior ring that is pressed in bearing 2 10.Between cylinder body 2 and plunger 3, spring 4 is housed, spring 4 is set on plunger 3, and push up respectively on the shoulder that is pressed in plunger 3 outer ends one end of spring 4, and the other end of spring 4 pushes up respectively on stroke nest that is pressed in cylinder body 2 excircles.Thrust plate 6 is sleeved on the spline of axle 1, the left side gap-contact of thrust plate 6 connects the right side of cylinder body 2, between thrust plate 6 and cylinder body 2, seal with seal ring 8, the left side contact of cylinder body 2 connects the right side of thrust plate 5, locking ring 7 is threaded and is sleeved on the right-hand member of axle 1, and the left side contact of locking ring 7 connects the right side of thrust plate 6.When being placed in the below of axle, plunger 3 forms enclosed space one A between cylinder body 2 and plunger 3 interior edge faces, when being placed in the top of axle 1, plunger 3 forms enclosed space two B between cylinder body 2 and plunger 3 interior edge faces, enclosed space one A and enclosed space two B all communicate with thrust plate 5 and thrust plate 6, position between cylinder body 2 right sides and the thrust plate 6 of corresponding plunger 3 the inners is provided with active area space C, between the pump housing 11 and pump cover 12, is joined with bolts.

The working procedure of the board-like radial plunger pump of small-power dish flow is: in the time that axle 1 rotates, cylinder body 2 together rotates together with plunger 3, thrust plate 6, locking ring 7, because bearing 2 10 is eccentric placements of relative axle 1, between plunger 3 and cylinder body 2, spring 4 is housed, so plunger 3 to-and-fro motion in the hole of cylinder body 2, enclosed space one A of plunger 3 the inners and enclosed space two B volumes change.In the time that pump is full of fluid, in Fig. 1, when the position of plunger 3 in axle 1 below, enclosed space one A changes from small to big, and completes oil suction; And in Fig. 1 in the time of the position of plunger 3 in axle 1 top, enclosed space two B from large to small, complete force feed, oil suction and force feed are to be connected into and out of hydraulic fluid port by being fixed on thrust plate 5 on the pump housing 11, now cylinder body 2 is close on thrust plate 5 and does relative rotary motion, the thrust that makes cylinder body 2 end faces be close to thrust plate 5 end faces is realized by thrust plate 6, and enclosed space one A of each plunger 3 the inners and empty two B of sealing both communicated with thrust plate 5, communicated again with thrust plate 6.Thrust plate 6 and cylinder body 2 synchronous rotaries, the active area of active area space C is slightly larger than thrust plate 5 active areas to cylinder body 2 reaction thrust, because thrust plate 5 sides are identical with the oil pressure of thrust plate 6 sides, utilization area space C is slightly larger than the reaction thrust of thrust plate 5 to cylinder body 2 to the thrust of cylinder body 2, cylinder body 2 is close on thrust plate 5, is adjacent to power not excessive again.Between thrust plate 6 and cylinder body 2 end faces, to there is slight clearance, after adjust in gap, locked with locking ring 7, because of gapped between thrust plate 6 and cylinder body 2, so fill seal ring with anti-leak at the C place, active area space of thrust plate 6, the board-like radial plunger pump of small-power dish flow both can make single pump and use, and also can make multiplex pump and use.

Claims (1)

1. the board-like radial plunger pump of small-power dish flow, comprise the pump housing (11), pump cover (12), axle (1), cylinder body (2), plunger (3), bearing one (9), bearing two (10), spring (4), outside framework oil seal (13), it is characterized in that bearing one (9) is contained in respectively on the pump housing (11) and pump cover (12), a left side for axle (1), right two ends are installed on respectively in the interior ring of bearing one (9), thrust plate (5) and bearing two (10) are contained in respectively the right side of the pump housing (11), axle (1) is through the endoporus of thrust plate (5), bearing two (10) the eccentric placement in center to axial, cylinder body (2) is sleeved on the spline of axle (1), the excircle of cylinder body (2) is placed in the interior ring of bearing two (10), on the excircle of cylinder body (2), uniform activity installs multiple plungers (3), plunger (3) shaft axis is mutually vertical with the shaft axis of axle (1), plunger (3) is to-and-fro motion in cylinder body (2) respectively, the external end head of plunger (3) withstands on respectively on the interior ring of bearing two (10), between cylinder body (2) and plunger (3), spring (4) is housed respectively, spring (4) is set on plunger (3), push up respectively on the shoulder that is pressed in plunger (3) outer end one end of spring (4), the other end of spring (4) pushes up respectively on stroke nest that is pressed in cylinder body (2) excircle, thrust plate (6) is sleeved on the spline of axle (1), the left side gap-contact of thrust plate (6) connects the right side of cylinder body (2), the left side contact of cylinder body (2) connects the right side of thrust plate (5), locking ring (7) is threaded and is sleeved on the right-hand member of axle (1), the left side contact of locking ring (7) connects the right side of thrust plate (6), when being placed in the below of axle (1), plunger (3) forms enclosed space one A between cylinder body (2) and plunger (3) interior edge face, when being placed in the top of axle (1), plunger (3) forms enclosed space two B between cylinder body (2) and plunger (3) interior edge face, enclosed space one A and enclosed space two B all communicate with thrust plate (5) and thrust plate (6), position between cylinder body (2) right side and the thrust plate (6) of corresponding plunger (3) the inner is provided with active area space C.