CN203297094U - Differential velocity vane pump driven by incomplete gear mechanisms - Google Patents

Abstract

The utility model discloses a vane differential pump driven by an incomplete gear mechanism, which comprises an incomplete gear mechanism drive system and a pump body; wherein, the incomplete gear mechanism drive system consists of four pairs of incomplete gear mechanisms, one drive shaft and two The drive shaft is fixedly connected to the three-phase asynchronous motor, and the two output shafts are respectively fixedly connected to the two impeller shafts. Each impeller shaft is equipped with two blades, and the adjacent blades form a closed cavity with the pump casing. Aiming at the defects of small displacement and unbalanced radial force in the positive displacement pumps currently used, the utility model adopts an incomplete gear mechanism driving system and an impeller combination coaxially installed in the pump casing, through the periodic meshing of incomplete gears and Separation, transforming the uniform rotation into periodic non-uniform rotation, so that the blades on the two impellers open and close periodically, so that the volume of the closed cavity formed by the adjacent blades and the pump casing changes periodically, and the pump discharges and absorbs liquid. process, and improve the applicability of volumetric pumps in industrial production and living fields.

Description

A Vane Differential Pump Driven by Incomplete Gear Mechanism

technical field

The utility model relates to a positive displacement pump, in particular to a periodic differential rotation of the impeller shaft by driving an incomplete gear mechanism, and then drives the blades to open and close periodically, so as to realize the change of the volume of the closed cavity and complete the differential rotation of the blades. A vane differential pump driven by an incomplete gear mechanism for the suction and discharge processes of the high-speed pump. the

Background technique

The vane differential pump is a new type of volumetric pump, which relies on the periodic changes in the volume of the closed working space contained in the liquid to periodically transfer energy to the liquid. The current positive displacement pump has defects such as unbalanced radial load on the rotor and small displacement volume ratio, which makes it difficult for the positive displacement pump to be widely used. In order to expand the application field of volumetric pumps, the utility model proposes a vane differential pump driven by an incomplete gear mechanism, which improves the volume ratio and displacement, improves the application range of volumetric pumps, and can be applied to occasions such as high lift and large displacement. . the

Contents of the invention

The purpose of the utility model is to provide a vane differential pump driven by an incomplete gear mechanism for the deficiencies of the prior art. the

The purpose of this utility model is achieved through the following technical solutions: a vane differential pump driven by an incomplete gear mechanism, which is mainly composed of an incomplete gear mechanism drive system and a pump body, wherein the incomplete gear mechanism drive system is mainly By the drive shaft, the first output shaft, the second output shaft, the first incomplete gear, the second incomplete gear, the third incomplete gear and the fourth incomplete gear installed on the drive shaft are installed on the first output shaft The first cylindrical gear, the second cylindrical gear and the third cylindrical gear and the fourth cylindrical gear installed on the second output shaft are composed of the first output shaft and the second output shaft are coaxial; at the initial position, The first incomplete gear meshes with the first spur gear, the second incomplete gear separates from the second spur gear, the third incomplete gear separates from the third spur gear, and the fourth incomplete gear meshes with the fourth spur gear; the pump body It is composed of the first impeller shaft, the second impeller shaft and the pump casing. The first impeller shaft is fixedly connected with the first output shaft, and the second impeller shaft is fixedly connected with the second output shaft; the first impeller shaft is fixedly connected with symmetrical first blades and third blades; the second impeller shaft is fixedly connected with Symmetrical second vane and fourth vane; the first vane, second vane and pump casing form a first closed cavity, the second vane, third vane and pump casing form a second closed cavity, the third vane, fourth vane and The pump casing forms the third closed chamber, and the first vane, the fourth vane and the pump casing form the fourth closed chamber; the pump casing is provided with the first liquid suction port, the second liquid suction port, the first liquid discharge port and the second row liquid mouth. the

Compared with the prior art, the utility model has the following technical effects: the vane differential pump of the utility model obtains accurate periodic motion rules through the incomplete gear mechanism drive system, overcomes the defect of unbalanced radial load on the vanes, and improves the The volume ratio and displacement have improved the application range of displacement pumps, and can be applied to occasions such as high head and large displacement. the

Description of drawings

Figure 1 is a schematic diagram of a vane differential pump driven by an incomplete gear mechanism;

Figure 2 shows the relative position relationship of the two impellers in the pump body;

Figure 3 shows the speed relationship of the output shaft;

Figure 4 is the position of the two impellers at time _t1 ;

Fig. 5 is the position of two impellers at t ₂ moment;

Fig. 6 is the position of two impellers at _t3 moment;

Fig. 7 is the position of two impellers at _t4 moment;

Figure 8 is the position of the two impellers at time _t5 ;

Fig. 9 is the position of two impellers at time _t6 ;

Fig. 10 is the position of two impellers at _t7 moment;

Figure 11 is the position of the two impellers at _t8 moment;

Figure 12 is the position of the two impellers at _t9 moment;

In the figure, incomplete gear mechanism drive system 1, drive shaft 2, first incomplete gear 3, second incomplete gear 4, third incomplete gear 5, fourth incomplete gear 6, pump body 7, second blade Wheel shaft 8, first impeller shaft 9, fourth cylindrical gear 10, third cylindrical gear 11, second cylindrical gear 12, first cylindrical gear 13, first output shaft 14, second output shaft 15, first blade 16, The first closed cavity 17, the first liquid discharge port 18, the second vane 19, the first liquid suction port 20, the second closed cavity 21, the third vane 22, the third closed cavity 23, the second liquid discharge port 24, the second closed cavity Four vanes 25 , a second liquid suction port 26 , a fourth closed cavity 27 and a pump casing 28 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. the

As shown in Figures 1 and 2, the utility model provides a vane differential pump driven by an incomplete gear mechanism, which is mainly composed of an incomplete gear mechanism drive system 1 and a pump body 7 . the

The incomplete gear mechanism drive system 1 is mainly composed of a drive shaft 2, a first output shaft 14, a second output shaft 15, a first incomplete gear 3, a second incomplete gear 4, and a third incomplete gear mounted on the drive shaft 2. Gear 5 and the fourth incomplete gear 6, the first spur gear 13, the second spur gear 12 installed on the first output shaft 14, the third spur gear 11 and the fourth spur gear installed on the second output shaft 15 10 composition; at the initial position, the first incomplete gear 3 meshes with the first spur gear 13, the second incomplete gear 4 separates from the second spur gear 12, and the third incomplete gear 5 separates from the third spur gear 11, The fourth partial gear 6 meshes with the fourth spur gear 10 . the

The pump body 7 is composed of a first impeller shaft 9 , a second impeller shaft 8 and a pump casing 28 , the first impeller shaft 9 is fixedly connected to the first output shaft 14 , and the second impeller shaft 8 is fixedly connected to the second output shaft 15 . the

Symmetrical first blades 16 and third blades 22 are fixedly connected to the first impeller shaft 9 . the

Symmetrical second blades 19 and fourth blades 25 are fixedly connected to the second impeller shaft 8 . the

The first vane 16, the second vane 19 and the pump housing 28 form the first closed chamber 17; the second vane 19, the third vane 22 and the pump housing 28 form the second closed chamber 21; the third vane 22, the fourth vane 25 and The pump casing 28 forms the third closed chamber 23 ; the first vane 16 , the fourth vane 25 and the pump casing 28 form the fourth closed chamber 27 . the

The pump casing 28 is provided with a first liquid discharge port 18 and a second liquid discharge port 24 , a first liquid suction port 20 and a second liquid suction port 26 . the

The rotational speeds n ₁ and n ₂ of the first impeller shaft 9 and the second impeller shaft 8 are shown in FIG. 3 . At time _t1 , the rotational speed of the first impeller shaft 9 is n _w , and that of the second impeller shaft 8 is n _w ; at time _t2 , the rotational speed of the first impeller shaft 9 changes from n _w to n _s , and the second impeller shaft 8 The rotation speed of the first impeller shaft 9 is n _w at time t ₃ , the rotation speed of the first impeller shaft 9 is changed from n _s to n _w , and the rotation speed of the second impeller shaft 8 is n _w ; at time t ₄ , the rotation speed of the first impeller shaft 9 is n _w , the rotational speed of the second impeller shaft 8 changes from n _w to n _s ; at time _t5 , the rotational speed of the first impeller shaft 9 is n _w , and the rotational speed of the second impeller shaft 8 changes from n _s to n _w ; at time _t6 , The rotational speed of the first impeller shaft 9 changes from n _w to n _s , and the rotational speed of the second impeller shaft 8 is n _w ; at time _t7 , the rotational speed of the first impeller shaft 9 changes from n _s to n _w , and the second impeller shaft 8 The speed of rotation is n _w ; at time _t8 , the speed of the first impeller shaft 9 is n _w , and the speed of the second impeller shaft 8 changes from n _w to n _s . At time _t9 , enter the next cycle.

As shown in Figure ₄ , at time t1, the rotational speeds of the first impeller shaft 9 and the second impeller shaft 8 are equal, and the rotational speeds of the first blade 16, the third blade 22, the second blade 19, and the fourth blade 25 are equal to those of the first blade. The wheel shaft 9 and the second impeller shaft 8 are the same, the first closed cavity 17 and the third closed cavity 23 reach the maximum, and the second closed cavity 21 and the fourth closed cavity 27 reach the minimum. At this moment, the first vane 16 seals the second liquid suction port 26, the third vane 22 seals the first liquid suction port 20, the vane differential pump driven by the incomplete gear mechanism stops liquid suction, and the second vane 19 seals the first liquid suction port. The liquid discharge port 18 and the fourth vane 25 seal the second liquid discharge port 24, and the vane differential pump driven by the incomplete gear mechanism stops liquid discharge.

As shown in Figure 5, from _t1 moment to _t2 moment, the first blade 16, the second blade 19, the third blade 22 and the fourth blade 25 rotate at the same speed, the first closed chamber 17, the second closed chamber 21, The volumes of the third closed chamber 23 and the fourth closed chamber 27 do not change, and the vane differential pump driven by the incomplete gear mechanism stops liquid discharge and liquid suction.

As shown in Figure 6, from moment _t2 to moment _t3 , the rotational speed _n1 of the first impeller shaft 9 is greater than the rotational speed _n2 of the second impeller shaft 8, and the rotational speeds of the first blade 16 and the third blade 22 are greater than the second The rotating speed of blade 19 and the 4th blade 25, the first closed cavity 17 and the 3rd closed cavity 23 become smaller gradually, and liquid is discharged from the first liquid discharge port 18 and the second liquid discharge port 24 respectively; The second closed cavity 21 and the 3rd closed cavity The four closed chambers 27 gradually become larger, and the liquid is sucked from the first liquid suction port 20 and the second liquid suction port 26 respectively; when moving to _t3 , the volumes of the first closed chamber 17 and the third closed chamber 23 reach the minimum, and the volume of the first closed chamber 23 reaches the minimum. The volumes of the second closed chamber 21 and the fourth closed chamber 27 reach the maximum. At this moment, the first vane 16 seals the first liquid discharge port 18, the third vane 22 seals the second liquid discharge port 24, and the vane differential pump driven by the incomplete gear mechanism stops draining; the second vane 19 seals the first liquid discharge port 24. The liquid suction port 20 and the fourth blade 25 seal the second liquid suction port 26, and the vane differential pump driven by the incomplete gear mechanism stops liquid suction.

As shown in Figure 7, from moment _t3 to moment _t4 , the rotational speed _n1 of the first impeller shaft 9 is equal to the rotational speed _n2 of the second impeller shaft 8, the first blade 16, the second blade 19, the third blade 22 It is the same as the fourth blade 25 rotating speed. At this moment, the volumes of the first closed chamber 17, the second closed chamber 21, the third closed chamber 23, and the fourth closed chamber 27 remain unchanged, and the vane differential pump driven by the incomplete gear mechanism stops draining and sucking liquid.

As shown in Figure 8, from time _t4 to time _t5 , the rotational speed _n1 of the first impeller shaft 9 is less than the rotational speed _n2 of the second impeller shaft 8, and the rotational speeds of the second blade 19 and the fourth blade 25 are greater than the first The rotating speed of blade 16 and the 3rd blade 22, the first closed chamber 17 and the 3rd closed chamber 23 become bigger gradually, the liquid is sucked from the first liquid suction port 20 and the second liquid suction port 26 respectively, the second closed chamber 21 and the 3rd closed chamber The four closed chambers 27 gradually become smaller, and the liquid is discharged from the first liquid discharge port 18 and the second liquid discharge port ₂₄ respectively; The volumes of the second closed cavity 21 and the fourth closed cavity 27 are minimized. At this moment, the first vane 16 seals the first liquid suction port 20, the third vane 22 seals the second liquid suction port 26, and the vane differential pump driven by the incomplete gear mechanism stops liquid suction; the second vane 19 seals the second liquid suction port. The liquid discharge port 24 and the fourth vane 25 seal the first liquid discharge port 18, and the vane differential pump driven by the incomplete gear mechanism stops liquid discharge.

As shown in Figure 9, from moment _t5 to moment _t6 , the rotational speed _n1 of the first impeller shaft 9 is equal to the rotational speed _n2 of the second impeller shaft 8, the first blade 16, the second blade 19, the third blade 22 It is the same as the fourth blade 25 rotating speed. At this moment, the volumes of the first closed chamber 17, the second closed chamber 21, the third closed chamber 23, and the fourth closed chamber 27 remain unchanged, and the vane differential pump driven by the incomplete gear mechanism stops draining and sucking liquid.

As shown in Figure 10, when moving from _t6 to _t7 , the rotational speed _n1 of the first impeller shaft 9 is greater than the rotational speed _n2 of the second impeller shaft 8, and the rotational speeds of the first blade 16 and the third blade 22 are greater than the second The rotating speed of blade 19 and the 4th blade 25, the first closed cavity 17 and the 3rd closed cavity 23 become smaller gradually, and liquid is discharged from the second liquid discharge port 24 and the first liquid discharge port 18 respectively, the second closed cavity 21 and the 3rd closed cavity The four closed chambers 27 gradually become larger, and liquid is sucked from the second liquid suction port ₂₆ and the first liquid suction port 20 respectively; The volumes of the second closed chamber 21 and the fourth closed chamber 27 reach the maximum. At this moment, the first vane 16 seals the second discharge port 24, the third vane 22 seals the first discharge port 18, the vane differential pump driven by the incomplete gear mechanism stops draining, and the second vane 19 seals the second discharge port. The liquid suction port 26 and the fourth blade 25 seal the first liquid suction port 20, and the vane differential pump driven by the incomplete gear mechanism stops liquid suction.

As shown in Figure 11, from _t7 moment to _t8 moment, the rotational speed _n1 of the first impeller shaft 9 is equal to the rotational speed _n2 of the second impeller shaft 8, the first blade 16, the second blade 19, the third blade 22 It is the same as the fourth blade 25 rotating speed. At this moment, the volumes of the first closed chamber 17, the second closed chamber 21, the third closed chamber 23, and the fourth closed chamber 27 remain unchanged, and the vane differential pump driven by the incomplete gear mechanism stops draining and sucking liquid.

As shown in Figure 12, from time _t8 to time _t9 , the rotational speed n1 of the first impeller shaft 9 is smaller than the rotational speed _n2 of the second impeller shaft 8, and the _rotational speeds of the second blade 19 and the fourth blade 25 are greater than the first The rotating speed of blade 16 and the 3rd blade 22, the first closed chamber 17 and the 3rd closed chamber 23 become bigger gradually, liquid is sucked from the 2nd liquid suction port 26 and the 1st liquid suction port 20 respectively, the 2nd closed chamber 21 and the 3rd closed chamber The four closed chambers 27 gradually become smaller, and the liquid is discharged from the second discharge port 24 and the first liquid discharge port 18 respectively; when moving to _t9 , the volumes of the first closed chamber 17 and the third closed chamber 23 reach the maximum, The volumes of the second closed cavity 21 and the fourth closed cavity 27 are minimized. At this moment, the first vane 16 seals the second liquid suction port 26, the third vane 22 seals the first liquid suction port 20, and the vane differential pump driven by the incomplete gear mechanism stops liquid suction; the second vane 19 seals the first liquid suction port 20. A liquid discharge port 18 and the fourth vane 25 seal the second liquid discharge port 24, and the vane differential pump driven by the incomplete gear mechanism stops liquid discharge. Starting at time _t9 , the vane differential pump driven by the incomplete gear mechanism enters the next working cycle.

Claims (1)

1. A vane differential pump driven by an incomplete gear mechanism, characterized in that it is mainly composed of an incomplete gear mechanism drive system (1) and a pump body (7), wherein the incomplete gear mechanism drive system ( 1) It mainly consists of the drive shaft (2), the first output shaft (14), the second output shaft (15), the first incomplete gear (3) and the second incomplete gear ( 4), the third incomplete gear (5) and the fourth incomplete gear (6), the first cylindrical gear (13) installed on the first output shaft (14), the second cylindrical gear (12) and the The third cylindrical gear (11) and the fourth cylindrical gear (10) on the second output shaft (15); the first output shaft (14) and the second output shaft (15) are coaxial; at the initial position , the first incomplete gear (3) meshes with the first spur gear (13), the second incomplete gear (4) separates from the second spur gear (12), the third incomplete gear (5) meshes with the third spur gear (11) Separation, the fourth incomplete gear (6) meshes with the fourth cylindrical gear (10); the pump body (7) is composed of the first impeller shaft (9), the second impeller shaft (8) and the pump casing (28) Composition; the first impeller shaft (9) is fixedly connected with the first output shaft (14), the second impeller shaft (8) is fixedly connected with the second output shaft (15); the first impeller shaft (9) is fixedly connected with symmetrical The first blade (16) and the third blade (22); the second impeller shaft (8) is fixedly connected with the symmetrical second blade (19) and the fourth blade (25); the first blade (16), the The second vane (19) and the pump casing (28) form the first closed cavity (17), the second vane (19), the third vane (22) and the pump casing (28) form the second closed cavity (21), and the third The vane (22), the fourth vane (25) and the pump casing (28) form the third closed chamber (23), and the first vane (16), the fourth vane (25) and the pump casing (28) form the fourth closed chamber (27); the pump casing (28) is provided with a first liquid suction port (20), a second liquid suction port (26), a first liquid discharge port (18) and a second liquid discharge port (24).

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