阅读说明：本技术 一种齿轮旋涡泵 (Gear peripheral pump ) 是由 朱海川 吴世权 殷晓华 于 2020-11-24 设计创作，主要内容包括：本发明适用于泵技术领域,提供了一种齿轮旋涡泵,包括：泵壳；叶轮,安装在所述泵壳内的流道中且由转子驱动转动,用于将外部介质吸入至流道中并从流道泵出；以及小齿轮,数量为两个且镜像安装在流道的介质出口位置处,两个所述小齿轮与叶轮啮合传动,用于对从流道泵出的外部介质进行二次加压和扩大流量,本发明的有益效果是：前流道和后流道与泵壳分离,并且取消了原有旋涡泵隔板,从而可以单独简单的旋转加工流道,或可用注塑的方法成型内衬里,大大提高流道光洁度和泵的工作效率,流量和扬程也得到提升。(The invention is suitable for the technical field of pumps, and provides a gear peripheral pump, which comprises: a pump housing; the impeller is arranged in the flow channel in the pump shell and is driven by the rotor to rotate, and is used for sucking an external medium into the flow channel and pumping the external medium out of the flow channel; the number of the small gears is two, the small gears are installed at the position of a medium outlet of the flow channel in a mirror image mode, the two small gears are in meshed transmission with the impeller and used for carrying out secondary pressurization and flow expansion on external media pumped out of the flow channel, and the beneficial effects of the invention are that: the front runner and the rear runner are separated from the pump shell, and an original vortex pump partition plate is omitted, so that the runners can be independently and simply rotationally processed, or an inner lining can be formed by an injection molding method, the smoothness of the runners and the working efficiency of the pump are greatly improved, and the flow and the lift are also improved.)

1. A gear volute pump, comprising:

a pump housing (9);

the impeller (1) is arranged in a flow channel in the pump shell (9) and is driven by a rotor to rotate, and is used for sucking an external medium into the flow channel and pumping the external medium out of the flow channel; and

the number of the pinions (2) is two, the pinions are installed at the position of a medium outlet of the flow channel in a mirror image mode, and the two pinions (2) are in meshed transmission with the impeller (1) and are used for carrying out secondary pressurization and flow expansion on external media pumped out of the flow channel.

2. The gear peripheral pump is characterized in that the flow passages comprise a rear flow passage (3) and a front flow passage (4) which are identical in structure, the rear flow passage (3) and the front flow passage (4) are installed in a pump shell (9) through a positioning pin (8), the impeller (1) is arranged between the rear flow passage (3) and the front flow passage (4), an annular flow passage cavity (3D) is further formed in the rear flow passage (3), and an inlet flow passage (3A) and an outlet flow passage (3B) are further formed in the flow passage cavity (3D).

3. Gear vortex pump according to claim 2, characterised in that an idler shaft (5) is fixed at the centre of rotation of the pinion (2), the idler shaft (5) being mounted at the outlet flow channel (3B) via an idler outer sleeve (6) and an idler inner sleeve (7).

4. Gear peripheral pump according to claim 1, characterized in that the impeller (1) is provided with a plurality of open blades on both sides, each open blade has a complete tooth shape at its root, and a plurality of axial flow blades are provided in the impeller (1).

5. A gear peripheral pump according to claim 4, characterized in that the teeth of the pinion (2) are fully meshed with the teeth of the root of the open blade, and the teeth of the cutting pinion (2) are also meshed with the head of the open blade.

6. A gear peripheral pump according to claim 1, wherein the rotor is an electric motor (12), a pump housing (9) is fixedly connected with a housing of the electric motor (12) through a plurality of bolts (13), the end of the pump housing (9) is further connected with a front cover (10) through a screw (14), and a medium inlet is arranged on the front cover (10).

7. A gear peripheral pump according to claim 6, characterized in that a mechanical seal (11) is arranged between the output end of the motor (12) and the pump casing (9), and the mechanical seal (11) is limited by a clamp spring (15).

Technical Field

The invention relates to a pump, in particular to a gear peripheral pump.

Background

A vortex pump is a vane pump. Mainly comprises an impeller, a pump body and a pump cover. The impeller is a disc, and blades on the circumference are uniformly arranged in a radial shape. An annular flow passage is formed between the pump body and the impeller, and the suction inlet and the discharge outlet are both arranged at the outer circumference of the impeller. A partition board is arranged between the suction inlet and the discharge outlet, so that the suction inlet and the discharge outlet are separated.

However, the small gap between the impeller and the inner wall of the pump body and between the impeller and the partition tongue can cause noise problem of squeaking in the cost, and if the gap is too large, more liquid can be caused to flow back, so that the flow and the pressure are reduced; and because the pump body is internally provided with the partition plate, the pump body flow channel can not be processed in a rotating way but is cast, so that the roughness of the inner wall flow channel of the pump body greatly reduces the efficiency of the vortex pump. Therefore, how to solve the whirlpool pump squeal and improving the flow rate, pressure and efficiency of the whirlpool pump are the key problems of the whirlpool pump.

Disclosure of Invention

An embodiment of the invention aims to provide a gear peripheral pump, and aims to solve the technical problems in the prior art determined in the background art.

The embodiment of the invention is realized in such a way that the gear peripheral pump comprises:

a pump housing;

the impeller is arranged in the flow channel in the pump shell and is driven by the rotor to rotate, and is used for sucking an external medium into the flow channel and pumping the external medium out of the flow channel; and

and the number of the pinions is two, the pinions are arranged at the position of the medium outlet of the flow channel in a mirror image mode, and the two pinions are in meshed transmission with the impeller and used for carrying out secondary pressurization on the external medium pumped out of the flow channel.

As a further scheme of the invention: the impeller is arranged between the rear runner and the front runner, an annular runner cavity is further arranged in the rear runner, and an inlet runner and an outlet runner are further arranged on the runner cavity.

As a still further scheme of the invention: an idler shaft is fixed at the rotating center of the pinion and is arranged at the outlet flow passage through an idler outer shaft sleeve and an idler inner shaft sleeve.

As a still further scheme of the invention: the impeller is characterized in that a plurality of open blades are arranged on two sides of the impeller, the root of each open blade is provided with a complete tooth form, and a plurality of axial flow blades are further arranged in the impeller.

As a still further scheme of the invention: the teeth of the pinion are completely meshed with the tooth form of the root part of the open type blade, and the teeth of the pinion are also meshed with the head part of the open type blade.

As a still further scheme of the invention: the rotor is a motor, a pump shell is fixedly connected with a shell of the motor through a plurality of bolts, the end part of the pump shell is further connected with a front cover through screws, and a medium inlet is formed in the front cover.

As a still further scheme of the invention: and a mechanical seal is also arranged between the output end of the motor and the pump shell and is limited by a clamp spring.

Compared with the prior art, the invention has the beneficial effects that: the front runner and the rear runner are separated from the pump shell, and an original vortex pump partition plate is omitted, so that the runners can be independently and simply rotationally processed, or an inner lining can be formed by an injection molding method, the smoothness of the runners and the working efficiency of the pump are greatly improved, and the flow and the lift are also improved.

Drawings

Fig. 1 is a schematic diagram of the internal structure of a gear peripheral pump.

Figure 2 is an exploded view of a gear volute pump.

Fig. 3 is a schematic structural diagram of an impeller in a gear peripheral pump.

Fig. 4 is a schematic structural diagram of a pinion in a gear peripheral pump.

FIG. 5 is a schematic diagram of the transmission between the impeller and the pinion in a gear peripheral pump.

FIG. 6 is a schematic diagram of a rear flow passage in a gear peripheral pump.

In the drawings: 1-impeller, 2-pinion, 3-rear runner, 4-front runner, 5-idler shaft, 6-idler outer shaft sleeve, 7-idler inner shaft sleeve, 8-positioning pin, 9-pump shell, 10-front cover, 11-mechanical seal, 12-motor, 13-bolt, 14-screw and 15-snap spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1-2, a structural diagram of a gear vortex pump according to an embodiment of the present invention includes a pump housing 9, an impeller 1 and a pinion 2, wherein the impeller 1 is installed in a flow channel in the pump housing 9 and is driven by a rotor to rotate, so as to suck an external medium into the flow channel and pump the external medium out of the flow channel; the number of the small gears 2 is two, the small gears are installed at the position of a medium outlet of the flow channel in a mirror image mode, and the two small gears 2 are in meshed transmission with the impeller 1 and are used for carrying out secondary pressurization and flow expansion on external media pumped out of the flow channel.

In the embodiment of the invention, as in a conventional vortex pump, the impeller 1 is driven by the rotor to rotate, an external medium is sucked into the flow channel and pressurized in the flow channel, after the external medium flows out of the flow channel, the external medium is pressurized for the second time due to the synchronous rotation of the pinion 2 and the impeller 1, so that the flow rate and the lift are improved, the problem of the vortex pump squealing is solved, a partition plate is omitted, the processing of the flow channel is more convenient, and a corrosion-resistant lining structure can be added on the inner wall of the flow channel.

The original flow channel is limited by the partition plate, the flow channel needs to be manufactured in a casting mode, after the partition plate is eliminated, the flow channel can be processed in a single simple rotating mode, or an inner lining can be formed in an injection molding mode.

As shown in fig. 6, as a preferred embodiment of the present invention, the flow channel includes a rear flow channel 3 and a front flow channel 4 which have the same structure, the rear flow channel 3 and the front flow channel 4 are installed in a pump housing 9 through a positioning pin 8, the impeller 1 is disposed between the rear flow channel 3 and the front flow channel 4, an annular flow channel cavity 3D is further disposed in the rear flow channel 3, and an inlet flow channel 3A and an outlet flow channel 3B are further disposed in the flow channel cavity 3D.

In the embodiment of the present invention, the rear flow path 3 is taken as an example, and is the same as the conventional scroll pump, and includes a flow path chamber 3D, an inlet flow path 3A, an outlet flow path 3B, a pinion chamber 3E for mounting the pinion 2, an idler shaft hole 3C, and a pin hole 3F. The rear flow channel 3 and the front flow channel 4 are mirror image parts of the front and the rear, and have the same characteristics, and the description is not repeated.

As shown in fig. 1, as a preferred embodiment of the present invention, an idler shaft 5 is fixed at the rotation center of the pinion 2, and the idler shaft 5 is installed at the outlet flow path 3B through an idler outer sleeve 6 and an idler inner sleeve 7.

In the embodiment of the invention, two pinions 2 are respectively arranged in the pinion cavities of the rear runner 3 and the front runner 4, correspondingly, two idler shafts 5 are respectively fixedly connected with the two pinions 2, and two idler outer shaft sleeves 6 and idler inner shaft sleeves 7 respectively penetrate through the front idler shaft 5 and the rear idler shaft 5 and are fixed in pin holes of the front runner 4 and the rear runner 3, so that the pinions 2 can freely rotate in bearings supported by two ends of the idler outer shaft sleeves 6 and the idler inner shaft sleeves 7 by taking the idler shafts 5 as axes.

As shown in fig. 3 to 5, as another preferred embodiment of the present invention, a plurality of open blades are disposed on both sides of the impeller 1, the root of each open blade has a complete tooth shape, and a plurality of axial flow blades are further disposed in the impeller 1. The teeth of the pinion 2 are completely meshed with the tooth form of the root part of the open blade, and the teeth of the cut pinion 2 are also meshed with the head part of the open blade.

In the embodiment of the invention, the pinion 2 is provided with a central shaft hole 2A and a plurality of teeth 2C, wherein the central shaft hole 2A is used for being matched with the idler shaft 5, the two sides of the impeller 1 are respectively provided with a plurality of open blades 1A and 1B, the structures of the 1A and the 1B are completely the same, the root part of each open blade is provided with a complete tooth form 1C, in order to increase double suction flow, the impeller 1 is internally provided with a plurality of axial flow blades 1Z, the teeth 2C of the pinion 2 are completely meshed with the tooth form 1C of the root part of the open blade in the impeller 1 and are meshed with the heads of the open blades 1A and 1B, so that the impeller 1 drives the two pinions 2 to rotate relatively, and the meshing characteristics of the external gears are met.

As shown in fig. 1 to 2, as another preferred embodiment of the present invention, the rotor is a motor 12, a pump housing 9 is fixedly connected to a housing of the motor 12 through a plurality of bolts 13, an end of the pump housing 9 is further connected to a front cover 10 through a screw 14, and the front cover 10 is provided with a medium inlet. In addition, a mechanical seal 11 is arranged between the output end of the motor 12 and the pump shell 9, and the mechanical seal 11 is limited by a clamp spring 15.

In practical application, the shell of the motor 12 is connected with the pump shell 9 through a bolt 13, the mechanical seal 11 is arranged on an output shaft of the motor 12 and limited by a clamp spring 15; a rear runner component (an inner idle wheel shaft sleeve 7, an outer idle wheel shaft sleeve 6, an idle wheel shaft 5 and a pinion 2 are arranged in the rear runner component) is pressed into a pump shell 9, and a positioning pin 8 is inserted into a pin hole 3F to prevent the rear runner component from rotating; the impeller 1 is arranged on an output shaft of the motor part 12, and the impeller 1 is rotated to ensure that the tooth form 1C on the blade is completely meshed with the tooth form 2C on the pinion 2; pressing the front runner component (internally provided with an idler wheel inner shaft sleeve 7, an idler wheel outer shaft sleeve 6, an idler wheel shaft 5 and a pinion 2) into the pump shell, and completely meshing the tooth form 1C on the blade with the tooth form 2C on the pinion 2; finally, the front cover 10 is fixed to the pump housing 9 by screws 14 and pressed.

In the embodiment of the present invention, the rear flow path 3 is taken as an example, and the same as the conventional scroll pump, the rear flow path 3 includes the flow path chamber 3D, the inlet flow path 3A, and the outlet flow path 3B, but does not include the pinion chamber 3E for mounting the pinion 2, the idler shaft hole 3C, and the pin hole 3F. The rear flow channel 3 and the front flow channel 4 are mirror image parts of the front and the rear, and have the same characteristics, and the description is not repeated

When the impeller 1 rotates, the pinion 2 also rotates synchronously. The medium flows in from the medium inlet of the front cover 10, a part of the medium flows in the inlet channel of the front channel 4, a part of the medium flows in the inlet channel 3A of the rear channel 3 through the axial flow blade 1Z of the impeller 1 in an accelerating way, and in the channel, the medium is accelerated to the outlet channels of the front channel 4 and the rear channel 3 according to the principle of a vortex pump and then flows out under the driving of the pinion 2. Therefore, the ingenious combination of the vortex pump and the gear pump is realized, and larger flow and pressure are realized.

The embodiment of the invention discloses a gear vortex pump, wherein a front runner 4 and a rear runner 3 are separated from a pump shell 9, and an original vortex pump partition plate is eliminated, so that the runners can be independently and simply processed in a rotating mode or an inner lining can be formed by an injection molding method, the smoothness of the runners and the working efficiency of the pump are greatly improved, and the flow rate and the lift are also improved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.