阅读说明：本技术 一种双轮泵 (Double-wheel pump ) 是由 李光惠 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种双轮泵,包括缸体(1)、缸盖(2)、叶片轮(3)、槽轮(4)及传动机构(5),所述叶片轮(3)与槽轮(4)在同步传动机构(5)的作用下在缸体内保持同步耦合转动,转动方向相反；为容积式泵,与齿轮泵相比,可大大提高泵的排量,提高泵的效率,解决泵用于油以外的流体的设备润滑问题。(The invention discloses a double-wheel pump which comprises a cylinder body (1), a cylinder cover (2), a vane wheel (3), a grooved wheel (4) and a transmission mechanism (5), wherein the vane wheel (3) and the grooved wheel (4) keep synchronous coupling rotation in the cylinder body under the action of the synchronous transmission mechanism (5), and the rotation directions are opposite; compared with a gear pump, the positive displacement pump has the advantages that the displacement of the pump can be greatly improved, the efficiency of the pump is improved, and the problem that the pump is used for lubricating equipment with fluid except oil is solved.)

1. The utility model provides a double round pump, includes cylinder body (1), cylinder cap (2), impeller (3), sheave (4) and synchronous drive mechanism (5), its characterized in that: the distance between the rotation centers of the vane wheel (3) and the grooved wheel (4) is greater than any radius of the vane wheel (3) and the grooved wheel (4) and less than the sum of the radii of the vane wheel (3) and the grooved wheel (4), and the vane wheel and the grooved wheel keep synchronous coupling rotation in the cylinder body under the action of the synchronous transmission mechanism (5), and the rotation directions are opposite.

2. A two-wheel pump according to claim 1, wherein: the grooved wheel (4) is provided with a groove, when the grooved wheel and the vane wheel (3) synchronously rotate in the opposite direction, the vane of the vane wheel (3) can be inserted into the groove of the grooved wheel (4), and the outer edge of the vane is matched with the groove to form sealing.

Technical Field

The invention relates to the technical field of water pumps, oil pumps, hydraulic motors and the like, in particular to a device which is applied to fluid extraction (pump) or outputs power by pressurized fluid.

Background

The existing water pump mainly adopts a centrifugal type and an axial flow type, a water inlet and a water outlet of the existing water pump are through, and except a submersible pump, the existing water pump needs to be filled and guided when the existing water pump is started above the liquid level of water; the general water pump has the defects of low efficiency and high energy consumption, and the high-efficiency energy-saving water pump has the problems of complex structure and high manufacturing cost.

The existing hydraulic motor, oil pump and other positive displacement type devices have either large mechanical loss such as a vane motor or small flow ratio and power ratio such as a gear pump.

Disclosure of Invention

The invention aims to design a double-wheel pump, which solves the performance deficiency caused by the structure of the prior art, and achieves the purposes of improving the efficiency of the water pump and realizing high efficiency and energy conservation; in the field of low-drop hydroelectric generation, the efficiency of power equipment is improved; in the hydraulic field, the power of equipment can be increased under lower pressure.

The invention adopts the coupling of the vane wheel and the grooved wheel, and realizes synchronous reverse rotation under the coordination of the synchronous transmission mechanism; fluid conveying closed spaces are formed among adjacent blades of the blade wheel, grooves of the grooved pulley, the inner wall of the cylinder body and the cylinder cover, when the blade wheel and the grooved pulley rotate synchronously, the blades are inserted into the grooves, a small fluid backflow closed space is formed among the blades, a previous blade, the grooves and the cylinder cover, and the difference value of the fluid conveying space and the backflow space is the flow which can be achieved by one blade when the blade wheel and the grooved pulley rotate for a circle.

The invention is realized by the following technical scheme: a double-wheel pump comprises a cylinder body, a cylinder cover, a vane wheel, a grooved wheel and a synchronous transmission mechanism, wherein the section of an inner cavity of the cylinder body is in a double-arc section line shape and is connected by a straight line or an arc line, the center distance of the double-arc section line is 60-80% of the diameter of the arc section line, the centers of the vane wheel and the grooved wheel shaft are respectively arranged at the centers of the two arc section lines, and the synchronous transmission mechanism is arranged on the outer side of the cylinder cover.

In order to further realize the invention better, the synchronous transmission mechanism is arranged at the outer side of the cylinder cover at one side, and the rotating shafts of the vane wheel and the grooved wheel are provided with gears for direct coupling; if the pump body is large, a transmission shaft can be arranged between the two gears.

Compared with the prior art, the invention has the following advantages and performance advantages:

the invention relates to a positive displacement fluid pump, the structure and the working principle of which are derived from a gear pump, but in order to increase the pump displacement under the same rotating speed, a gear is innovatively replaced by a vane wheel and a grooved wheel, and the vane wheel and the grooved wheel are mutually coupled and sealed to form a positive displacement pump structure.

The invention is used for the water pump, is similar to a vacuum pump when being started, and does not need to draw water under the condition that the water suction fall of the water inlet is not large; the water pump can run at low speed, so that the kinetic energy and loss of water are reduced, the energy is converted into potential energy of the water to the maximum extent, and the aims of high efficiency and energy conservation are fulfilled; the transmission mechanism of the pump is arranged on the outer side of the cylinder cover, and lubrication and maintenance are facilitated.

The invention can effectively improve the generating efficiency in the low-drop small hydroelectric power generation field, can control the flow speed of water at a lower level, does not need to convert most of potential energy of the water into kinetic energy, fully utilizes the pressure of the water to do work, and controls the kinetic energy of drained water at a lower level, thereby improving the generating efficiency.

In the existing gear pump, a gear is arranged in a cylinder body of the pump, and because a space among a tooth socket, the cylinder body and a cylinder cover is used as a fluid space, the space is smaller, the displacement is limited at the same rotating speed, and if the rotating speed and the displacement are increased, the loss of fluid kinetic energy is increased; the two gears are coupled and stressed, mechanical abrasion exists, and lubrication between the gears cannot be solved if the gear is used for a water pump.

The invention can also be applied to a low-pressure air pump or a vacuum pump in a specific scene.

Drawings

Fig. 1 is a schematic structural view of the present invention shown in embodiment 1.

Fig. 2 is a schematic view of the structure and the operation principle of the present invention shown in embodiment 1.

Fig. 3 is a schematic structural view of the present invention shown in embodiment 2.

The device comprises a cylinder body 1, a cylinder cover 2, a vane wheel 3, a sheave 4, a transmission mechanism 5, a vane wheel rotating shaft 6, a sheave rotating shaft 7, a fluid inlet and outlet 8, a vane wheel rotating direction 9, a sheave rotating direction 10 and a fluid flowing direction 11.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

In the description of the present invention, it is to be understood that the terms etc. indicate orientations or positional relationships based on those shown in the drawings only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It is worth noting that: in the present application, when it is necessary to apply the known technology or the conventional technology in the field, the applicant may have the case that the known technology or/and the conventional technology is not specifically described in the text, but the technical means is not specifically disclosed in the text, and the present application is considered to be not in compliance with the twenty-sixth clause of the patent law.

Example 1:

as shown in fig. 1, this embodiment shows a two-wheel pump using a pair of gears with the same size as a transmission mechanism, and the cylinder body 1 is a cylinder body structure formed by two arc sections whose cross-sectional shapes are inner walls and transition in a tangent line, and mainly comprises a cylinder body 1, two cylinder covers 2, a vane wheel 3, a sheave 4, a gear transmission mechanism 5, a vane wheel rotating shaft 6, a sheave rotating shaft 7, and the like.

As shown in fig. 1 and 2, the cylinder body 1 is a structure in which the shape of the cross section of the inner wall is formed by two arc sections in tangent or arc transition, and is an outer structural member of the double-wheel pump and can be fixed to the cylinder cover 2 through a flange; the centers of two arc sections of the cylinder body 1 are eccentrically arranged; the rotation centers of the vane wheel 3, the rotating shaft 6, the grooved wheel 4 and the rotating shaft 7 are respectively concentric with the arc centers of the two arc sections of the cylinder body 1; the cylinder body 1 is provided with a fluid inlet 8a and a fluid outlet 8 b; wherein the rotating shaft 7 is a power input shaft.

The working principle of the embodiment is as follows:

as shown in the attached drawings 1 and 2, when the impeller 3 and the grooved pulley 4 synchronously rotate in the reverse direction, fluid enters the cylinder body from the inlet 8a, then enters a space 12 formed between adjacent blades of the impeller 3 and the inner walls of the cylinder body 1 and the cylinder cover 2, and is pushed by the rear blades of the impeller 3; the fluid enters a groove of the grooved pulley 3 and a space 13 formed between the inner walls of the cylinder body 1 and the cylinder cover 2 and is pushed by a blade behind the groove of the grooved pulley 4; when the fluid reaches the outlet 8b side of the cylinder body 1, the blade wheel 3 blade is inserted into the groove of the grooved pulley 4, and a certain fluid backflow space 14 is formed between the blade wheel 3 blade and the groove of the grooved pulley 4; since the sum of the spaces 12, 13 is larger than the space 14, the extruded portion fluid is discharged toward the outlet 8 b; the invention thus makes it possible to pump fluid from the inlet 8a to the outlet 8b of the cylinder 1.

Compared with a gear pump, the gear pump has the advantages that a brand-new blade wheel and grooved wheel structure is adopted, friction between the blade wheel and the grooved wheel is avoided, lubrication is not needed, and meanwhile the discharge capacity of the pump is greatly improved; compared with a centrifugal pump, the invention is a positive displacement pump, does not need to be filled with water when pumping water and starting, reduces the leakage of fluid in the pump, improves the working efficiency and is beneficial to achieving the effect of energy conservation.

Example 2:

the present embodiment is a power device using pressurized liquid to provide power, as shown in fig. 3, the device of the present embodiment has the same structure as that of embodiment 1, and is different from embodiment 1 in that a synchronous transmission mechanism 5 adopts a structure of a bevel gear and a transmission shaft, and a rotating shaft 7 is a power output shaft.

The working principle of the embodiment is as follows:

inputting a pressure liquid into an inlet of the equipment; on the inlet 8a side, the outer edge of the vane wheel 3 moves to contact with the inner wall of the cylinder body 1, and the vane wheel 3 generates positive torque to the vane on the outlet 8b side of the vane wheel 3; the vane wheel 3 vane contacted with the groove of the grooved wheel 4 generates reverse torque; the two torques are equal in magnitude and opposite in direction, and the impeller 3 is in a balanced state. The outer edge of the blade of the grooved pulley 4 moves to be in contact with the inner wall of the cylinder body 1 and reaches the blade at the outlet 8b side of the grooved pulley 4, and the grooved pulley 4 generates positive torque; the grooved wheel 3 blade contacted with the blade wheel 3 blade generates reverse torque; the reverse torque is smaller than the forward torque due to the fact that the bearing area and the torque radius of the blade of the sheave 4 are smaller than the forward torque, and therefore a certain forward torque is formed, and the sheave 4 is pushed to rotate.