CN202187914U - Composite impeller type water pump - Google Patents

Abstract

A composite impeller type water pump is characterized in that a cylindrical face hole with O1 as the rotating center is arranged on a pump casing, a positioning pin shaft with O2 as the rotating center is arranged on a pump seat, and the eccentric distance of O1 and O2 is e. A composite impeller is arranged in the cylindrical face hole of the pump casing and composted of a front cover plate, a support wheel, a blade, a rear cover plate and a positioning pin. The front cover plate and the rear cover plate are in movable fit with the cylindrical face hole with O1as the rotation center. Positioning holes are radially distributed on the front cover plate and the rear cover plate respectively. A hub key groove hole is arranged at the position of O1 on the front cover plate, a technological hole is arranged at the position of O1 on the rear cover plate, a hole in movable fit with the positioning pin shaft and with O2 as the rotation center is arranged on the support wheel, and positioning holes are radially arranged on the support wheel. Two ends of the blade are provided with a positioning pin hole and a matched groove, the blade and the support wheel are connected to form an assembly connected with the front cover plate and the rear cover pate. A pump shaft is fixed on the hub key groove hole. A pump covers are assembled on the pump casing and the pump shaft. The water pump is simple in structure, high in operation efficiency and capable of saving energy, achieving high and medium pressure simultaneously and achieving pumping, conveying and boosting of a large amount of liquid.

Description

Composite impeller formula water pump

Technical field

The utility model belongs to the positive displacement pump technical field, specifically refers to a kind of be used to carry the pumping of thin, as totally, not contain solid particle and fiber water and various liquid, suction booster.

Background technique

At present, be generally used for both at home and abroad pumping, the pump of supercharging mainly contains: positive displacement pump and centrifugal pump.Positive displacement pump: mainly contain reciprocating pump; Plunger pump; Diaphragm pump; Gear pump; Sliding vane pump; Screw pump etc.Above-mentioned various positive displacement pump structure relative complex, and be difficult to carry big flow liquid.

Centrifugal pump: mainly contain single-stage pump; Multistage pump; Axial-flow pump etc.Centrifugal pump is simple in structure, but can't realize carrying middle and high pressure, big flow liquid simultaneously.

Summary of the invention

The utility model technical problem to be solved be to provide a kind of simple in structure, operational efficiency is high, energy-conservation.Can realize simultaneously that the pumping of middle and high pressure, big flow liquid, supercharging use pump.

For realizing above-mentioned purpose, the utility model adopts following technological scheme:

Composite impeller formula water pump mainly is made up of the pump housing, composite impeller, pump shaft and pump cover, and its middle pump body is connected with pump seat by pump case and forms; Wherein have the cylinder face on the pump case, and be provided with suction port and exhaust port, pump seat is provided with alignment pin; The rotating center of cylinder face is O1, and the rotating center of alignment pin is O2, and the throw of eccentric of O1 and O2 is e; It is characterized in that: said composite impeller is positioned at the cylinder face of pump case, and by front shroud, take advantage of wheel, blade, back shroud, first locating stud and second locating stud to form, wherein front shroud and back shroud are positioned to prop up to take advantage of and take turns both sides; Front shroud is rotating center with O1, the radial equipartition positioning hole, and rotating center O1 place is provided with the wheel hub dowel hole; Back shroud is rotating center with O1, the radial equipartition positioning hole, and rotating center O1 place has auxiliary hole; The external diameter of front shroud and back shroud and cylinder face movingly, take advantage of have on the wheel with O2 be rotating center and with alignment pin hole movingly, it radially has positioning hole; The blade two ends have first positioning pin hole, second positioning pin hole and matching slot, and support roller garden cambered surface cooperates with matching slot surface of contact on the blade, and first positioning pin hole of blade is with after a positioning hole of taking advantage of wheel radial to have is connected through first locating stud; Blade with take advantage of the wheel constituent components, first positioning pin hole and first locating stud movingly, wherein the arc surface on the blade takes advantage of the arc surface on the wheel tangent with propping up; Form dynamic point of contact, the positioning hole on second positioning pin hole of the blade the other end and the front shroud, the positioning hole on the back shroud are fixedly connected through second locating stud, and second positioning pin hole and second locating stud are movingly; Wherein arc surface on the blade and cylinder face are tangent, form dynamic point of contact; Said dynamic point of contact, blade profile curve, support roller profilogram and cylinder hole, garden form separate chamber; Said pump shaft is fixed on the wheel hub dowel hole; Pump cover is assemblied on pump case and the pump shaft, matches on seal arrangement and pump cover and the pump shaft.

Take advantage of wheel to have n for said, and n >=3, prop up and take advantage of between the wheel around rotating center O2 relative swing.

Said blade has n, and n >=3.

The utility model is simple in structure, operational efficiency is high, and is energy-conservation.Can realize middle and high pressure simultaneously, big flow liquid is pumped, pump is used in supercharging.

Description of drawings:

Fig. 1 is a composite impeller formula water pump principle schematic;

Fig. 2 is that the A-A of Fig. 1 is to sectional drawing;

Fig. 3 is the composite impeller structural representation;

Fig. 4 is the pump body structure schematic representation;

Fig. 5 is that the B-B of Fig. 4 is to sectional drawing;

Fig. 6 is the front shroud structural representation;

Fig. 7 is that the D-D of Fig. 6 is to sectional drawing;

Fig. 8 is the rear cover plate structure schematic representation;

Fig. 9 is the left view of Fig. 8;

Figure 10 takes advantage of the wheel construction schematic representation for propping up;

Figure 11 is the left view of Figure 10;

Figure 12 is a blade j structural representation;

Figure 13 is the plan view of Figure 12;

Figure 14 is the structural representation of blade i;

Figure 15 is the plan view of Figure 14;

Figure 16 is the structural representation of blade h;

Figure 17 is the plan view of Figure 16;

Figure 18 is a separate chamber I closed curve schematic representation;

Figure 19 is a separate chamber II closed curve schematic representation;

Figure 20 is a separate chamber III closed curve schematic representation;

Figure 21 is an assembly j7 free state schematic representation;

Figure 22 is an assembly i8 free state schematic representation;

Figure 23 is an assembly h9 free state schematic representation.

Embodiment:

Below in conjunction with accompanying drawing the utility model embodiment is elaborated.

Like Fig. 1,2,4, shown in 5; Pump housing T is assemblied by pump case 3 and pump seat 4; Wherein to have on the pump case 3 with O1 be rotating center, be the cylinder face of diameter with D; And be provided with suction port J and exhaust port L, and it is rotating center that pump seat 4 is provided with O2, be the alignment pin 5 of diameter with d, the throw of eccentric of O1 and O2 is e.Like Fig. 1,2, shown in 3; Composite impeller Z is positioned at the cylinder face D of pump case 3; Take advantage of wheel 7,8,9 (n >=3 by front shroud 11, identical the propping up of a n structure; N=3 in the present embodiment), the blade j that a n structure is different, i, h (n >=3, n=3 in the present embodiment), back shroud 10, the first locating stud a and the second locating stud b form; Wherein front shroud 11 is positioned to prop up with back shroud 10 and takes advantage of wheel 7,8,9 both sides.Like Fig. 6, shown in 7, front shroud 11 is to be rotating center with O1, is the wafer body of diameter with D, radially is evenly distributed with n positioning hole x1 (in the present embodiment being 3), and rotating center O1 place is provided with wheel hub dowel hole M; Like Figure 10, shown in 11, n structure is identical takes advantage of that to have with O2 on the wheel 7,8,9 be rotating center, and diameter is the hole of d, and it radially has positioning hole G; Shown in Figure 12-17, the last two ends of blade j, i, h of a said n different structure have the first positioning pin hole a, the second positioning pin hole b and matching slot Q.Like Fig. 8, shown in 9, back shroud 10 is to be rotating center with O1, is the wafer body of diameter with D, radially is evenly distributed with n positioning hole x2 (in the present embodiment being 3), and rotating center O1 place has auxiliary hole p.Shown in Figure 21-23; The first positioning pin hole a of blade j, i, h is with after a positioning hole G who takes advantage of wheel 7,8,9 radially to have is connected through the first locating stud a; Blade j, i, h and take advantage of wheel 7,8,9 constituent components j7, i8, h9 respectively; First positioning pin hole (a) and first locating stud (a) are movingly; Positioning hole x1 on the second positioning pin hole b of blade j, i, the h the other end and the front shroud 11, the positioning hole x2 on the back shroud 10 are fixedly connected through the second locating stud b, and second positioning pin hole (b) and second locating stud (b) constitute composite impeller Z movingly.D hole on the composite impeller Z and alignment pin 5 movingly, and the cylinder face D on the D outer diameter of composite impeller Z and the pump housing T is movingly.The o arc surface of blade j, i, h respectively with take advantage of the V arc surface on the wheel 7,8,9 tangent, its dynamic point of contact is respectively f, k, y; Last arc surface u and the pump housing T garden cylinder hole D of blade j, i, h is tangent, and its dynamic point of contact is respectively c, t, g; Support roller 7,8,9 arc surface s cooperate with blade j, i, the last matching slot Q surface of contact of h.Shown in Fig. 1,10,18-20, dynamic point of contact f, k, y; C, t, g and blade j, i, last arc profile curve, the arc profile curve V on the support roller 7,8,9, the pump housing T cylinder face D of h form separate chamber I, II, III respectively.Pump shaft 1 is fixed on the wheel hub dowel hole M on the front shroud 11, and pump cover 2 is assemblied on pump case 3 and the pump shaft 1, and seal arrangement 6 cooperates with pump shaft 1, pump cover 2 realizes water pump axle head dynamic sealing action.

The utility model working principle is as shown in Figure 1; When driving composite impeller Z, pump shaft 1 presses direction shown in Figure 1 when rotating center O1 rotates; Blade j on the composite impeller Z, i, h rotate around O1 thereupon together; The also relative simultaneously first locating stud a, second locating stud b swing, the support roller 7,8,9 on the composite impeller Z rotates around rotating center O2, simultaneously support roller 7,8, between 9 around rotating center O2 relative swing.In movement process, the volume of separate chamber I, II, III gradually becomes minimum by maximum respectively, gradually becomes maximum by minimum again then, and the motion that so goes round and begins again makes suction port J be in negative pressure all the time and sucks liquid automatically; Separate chamber I, II, the periodic variation of III volume are discharged liquid through exhaust port L.Pump shaft 1 drives composite impeller Z and rotates continuously and realized the pumping of liquid, supercharging working procedure.

Claims (3)

1. composite impeller formula water pump; Mainly form by the pump housing (T), composite impeller (Z), pump shaft (1) and pump cover (2); Its middle pump body (T) is connected with pump seat (4) by pump case (3) and forms, and wherein has cylinder face (D) on the pump case (3), and is provided with suction port (J) and exhaust port (L); Pump seat (4) is provided with alignment pin (5); It is characterized in that: the rotating center of cylinder face (D) is O1, and the rotating center of alignment pin (5) is O2, and the throw of eccentric of O1 and O2 is e; Said composite impeller (Z) is positioned at the cylinder face (D) of pump case (3); By front shroud (11), take advantage of wheel (7,8,9), blade (j, i, h), back shroud (10), first locating stud (a) and second locating stud (b) to form; Wherein front shroud (11) and back shroud (10) are positioned to prop up and take advantage of wheel (7,8,9) both sides; Front shroud (11) is rotating center with O1; Radial equipartition positioning hole (x1); Rotating center O1 place is provided with wheel hub dowel hole (M); Back shroud (10) is rotating center with O1, radial equipartition positioning hole (x2), and rotating center O1 place has auxiliary hole (p); The external diameter (D) of front shroud (11) and back shroud (10) and cylinder face (D) are movingly; Take advantage of have with O2 on the wheel (7,8,9) be rotating center and with alignment pin (5) hole (d) movingly, it radially has positioning hole (G), blade (j, i, h) two ends have first positioning pin hole (a), second positioning pin hole (b) and matching slot (Q); Support roller (7,8,9) garden cambered surfaces (s) cooperate with matching slot (Q) surface of contact on the blade (j, i, h); First positioning pin hole (a) of blade (j, i, h) is with after a positioning hole (G) of taking advantage of wheel (7,8,9) radially to have is connected through first locating stud (a), blade (j, i, h) and prop up and take advantage of wheel (7,8,9) constituent components (j7, i8, h9), and first positioning pin hole (a) and first locating stud (a) are movingly; Wherein the arc surface (o) on the blade (j, i, h) with take advantage of the arc surface (V) on the wheel (7,8,9) tangent; Form dynamic point of contact (f, k, y), the positioning hole (x1) on second positioning pin hole (b) of blade (j, i, the h) the other end and the front shroud (11), the positioning hole (x2) on the back shroud (10) are fixedly connected through second locating stud (b), and second positioning pin hole (b) and second locating stud (b) are movingly; Wherein the arc surface (u) on the blade (j, i, h) is tangent with cylinder face (D), forms dynamic point of contact (c, t, g); Said dynamic point of contact (f, k, y, c, t, g), blade (j, i, h) profilogram, support roller (7,8,9) profilograms (V) and cylinder face (D) form separate chamber (I, II, III); Said pump shaft (1) is fixed on the wheel hub dowel hole (M); Pump cover (2) is assemblied on pump case (3) and the pump shaft (1), matches on seal arrangement (6) and pump cover (2) and the pump shaft (1).

2. composite impeller formula water pump according to claim 1 is characterized in that: take advantage of wheel (7,8,9) to have n for said, and n >=3, each is taken advantage of between the wheel around rotating center O2 relative swing.

3. composite impeller formula water pump according to claim 1 is characterized in that: said blade (j, i, h) has n, and n >=3.

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