阅读说明：本技术 一种活塞装置 (Piston device ) 是由 陈太文 陆伟良 杜帅 王冠 景增明 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种活塞装置,包括：缸体,所述缸体具有弧形部,所述弧形部的侧壁开设有介质进口和介质出口；活塞,所述活塞可转动设置于所述缸体的弧形部,所述活塞与所述介质进口和所述介质出口之间形成容积腔；传动组件,所述传动组件与所述活塞连接并可带动所述活塞转动。本发明在缸体上设置弧形部,并在弧形部的侧壁开设介质进口和介质出口,使活塞与介质进口与介质出口之间形成容积腔,随着活塞的往复转动,容积腔的容积发生变化,当容积腔的容积扩大时,介质从介质进口进入容积腔,当容积腔的容积缩小时,介质从介质出口排出,实现吸进介质和排出介质的功能,且活塞运动时,活塞不会对缸壁产生侧向压力,摩擦阻力减少,效率提高。(The invention discloses a piston device, comprising: the cylinder body is provided with an arc-shaped part, and a medium inlet and a medium outlet are formed in the side wall of the arc-shaped part; the piston is rotatably arranged on the arc-shaped part of the cylinder body, and a volume cavity is formed between the piston and the medium inlet and between the piston and the medium outlet; and the transmission assembly is connected with the piston and can drive the piston to rotate. According to the invention, the arc-shaped part is arranged on the cylinder body, the side wall of the arc-shaped part is provided with the medium inlet and the medium outlet, so that the volume cavity is formed between the piston and the medium inlet and the medium outlet, the volume of the volume cavity is changed along with the reciprocating rotation of the piston, when the volume of the volume cavity is enlarged, the medium enters the volume cavity from the medium inlet, when the volume of the volume cavity is reduced, the medium is discharged from the medium outlet, the functions of sucking the medium and discharging the medium are realized, and when the piston moves, the piston does not generate lateral pressure on the cylinder wall, the friction resistance is reduced, and the efficiency is improved.)

1. A piston device, comprising:

the cylinder body is provided with an arc-shaped part, and a medium inlet and a medium outlet are formed in the side wall of the arc-shaped part;

the piston is rotatably arranged on the arc-shaped part of the cylinder body, and a volume cavity is formed between the piston and the medium inlet and between the piston and the medium outlet;

and the transmission assembly is connected with the piston and can drive the piston to rotate.

2. The piston device of claim 1, wherein: the piston is plate-shaped, and the arc-shaped part is provided with an arc-shaped surface;

one end of the piston is rotatably arranged on one side opposite to the arc-shaped surface through a rotating shaft, and one end of the piston can slide along the arc-shaped surface.

3. The piston device of claim 2, wherein: the piston comprises two layers of plates, a sealing groove is formed in a gap between the two layers of plates, and a sealing piece is arranged at one end, close to the arc-shaped surface, of each of the two layers of plates.

4. The piston device of claim 2, wherein: the rotating shaft is fixed through a bearing pin joint, and the bearing is a rolling bearing or a sliding bearing.

5. The piston device of claim 2, wherein: the transmission assembly comprises a crankshaft and a connecting rod; one end of the crankshaft is pivoted with an external power source, the other end of the crankshaft is hinged with one end of the connecting rod, and the other end of the connecting rod is connected with the piston.

6. The piston device of claim 5, wherein: the piston device further comprises a crankshaft support, and one end of the crankshaft is pivoted through the crankshaft support.

7. The piston device of claim 6, wherein: the piston device further comprises a connecting support, the connecting support is fixedly connected with the piston, and the other end of the connecting rod is hinged to the connecting support.

8. The piston device of claim 7, wherein: the other end of the connecting rod is hinged to the connecting support through a pin shaft.

9. Piston device according to any of claims 5-8, wherein: the cylinder body comprises an upper cylinder body and a lower cylinder body, and the upper cylinder body is detachably connected with the lower cylinder body;

the arc-shaped part is positioned on the upper cylinder body;

one end of the connecting rod is pivoted in the lower cylinder body.

10. The piston device according to any one of claims 1 to 8, wherein: a rotatable inlet baffle is arranged on the inner side of the medium inlet;

and a rotatable outlet baffle is arranged outside the medium outlet.

Technical Field

The invention relates to the field of fluid mechanical equipment, in particular to a piston device.

Background

The existing reciprocating piston structure is widely used for internal combustion engines and various pumps, such as air pumps, water pumps, oil pumps and other medium pumps. Under the push-pull action of the piston, the piston can be subjected to the lateral force of the cylinder wall, and the lateral force generates larger friction force, so that the efficiency of the piston mechanism is reduced.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a piston device having features of simple structure, small frictional resistance, and high efficiency.

The piston device of the present invention includes:

the cylinder body is provided with an arc-shaped part, and a medium inlet and a medium outlet are formed in the side wall of the arc-shaped part;

the piston is rotatably arranged on the arc-shaped part of the cylinder body, and a volume cavity is formed between the piston and the medium inlet and between the piston and the medium outlet;

and the transmission assembly is connected with the piston and can drive the piston to rotate.

According to the piston device, the arc-shaped part is arranged on the cylinder body, the side wall of the arc-shaped part is provided with the medium inlet and the medium outlet, so that the volume cavity is formed between the piston and the medium inlet and between the piston and the medium outlet, the volume of the volume cavity is changed along with the reciprocating rotation of the piston, when the volume of the volume cavity is enlarged, the medium enters the volume cavity from the medium inlet, when the volume of the volume cavity is reduced, the medium is discharged from the medium outlet, and when the piston moves, the piston does not generate lateral pressure on the cylinder wall, so that the friction resistance is reduced, and the efficiency is improved.

In one embodiment of the above technical solution, the piston is plate-shaped, and the arc-shaped portion has an arc-shaped surface;

one end of the piston is rotatably arranged on one side opposite to the arc-shaped surface through a rotating shaft, and one end of the piston can slide along the arc-shaped surface.

The plate-shaped piston is simple in structure and convenient to install, and due to the positioning effect of the rotating shaft, the piston cannot generate lateral pressure on the cylinder wall when rotating, so that the friction resistance is reduced.

In an embodiment of the above technical solution, the piston includes two plates, a sealing groove is formed in a gap between the two plates, and a sealing member is disposed at one end of the two plates, which is close to the arc surface. The piston is arranged into two layers, and the sealing element is additionally arranged, so that the sealing effect of the piston can be improved, and a medium is prevented from seeping out of the end part of the piston.

In one embodiment of the above technical solution, the rotating shaft is pivotally connected and fixed by a bearing, and the bearing is a rolling bearing or a sliding bearing. The rolling bearing and the sliding bearing are simple in structure, convenient to install and use and stable in structure.

In one embodiment, the transmission assembly includes a crankshaft and a connecting rod; one end of the crankshaft is pivoted with an external power source, the other end of the crankshaft is hinged with one end of the connecting rod, and the other end of the connecting rod is connected with the piston. The crankshaft is driven by an external power source to rotate, so that the connecting rod rotates to drive the piston to rotate in the arc-shaped part in a reciprocating mode.

In one embodiment of the above technical solution, the piston device further includes a crankshaft support, and the one end of the crankshaft is pivotally connected to the crankshaft support. The crankshaft support is pivoted with one end of the crankshaft, so that the crankshaft is more stably pivoted.

In an embodiment of the above technical solution, the piston device further includes a connecting support, the connecting support is fixedly connected to the piston, and the other end of the connecting rod is hinged to the connecting support.

In one embodiment of the above technical solution, the other end of the connecting rod is hinged to the connecting support through a pin. The hinge pin has simple structure, is convenient to install and use and is suitable for being used as a hinged connecting piece.

In one embodiment of the above technical solution, the cylinder body includes an upper cylinder body and a lower cylinder body, and the upper cylinder body is detachably connected to the lower cylinder body;

the arc-shaped part is positioned on the upper cylinder body;

one end of the connecting rod is pivoted in the lower cylinder body.

Will the cylinder body is even last cylinder body and lower cylinder body, go up the cylinder body and act on the medium business turn over, lower cylinder body then is used for the installation drive assembly, and can dismantle the connection and conveniently carry out dismouting maintenance to the structure in the cylinder body.

In one embodiment of the above technical solution, a rotatable inlet baffle is disposed inside the medium inlet;

and a rotatable outlet baffle is arranged outside the medium outlet.

And an inlet baffle and an outlet baffle are respectively arranged on the inner side of the medium inlet and the outer side of the medium outlet, and a one-way channel is respectively formed on the medium inlet and the medium outlet to prevent the medium from flowing out of the medium inlet and prevent the medium from flowing in from the medium outlet.

Compared with the prior art, the piston device has the advantages that the arc-shaped part is arranged on the cylinder body, the medium inlet and the medium outlet are formed in the side wall of the arc-shaped part, the volume cavity is formed between the piston and the medium inlet and between the piston and the medium outlet, the volume of the volume cavity is changed along with the reciprocating rotation of the piston, when the volume of the volume cavity is enlarged, the medium enters the volume cavity from the medium inlet, when the volume of the volume cavity is reduced, the medium is discharged from the medium outlet, the functions of sucking the medium and discharging the medium are realized, and when the piston moves, the piston does not generate lateral pressure on the cylinder wall, the friction resistance is reduced, and the efficiency is improved. The piston device has the characteristics of simple structure, small frictional resistance, high efficiency and the like.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a preferred structure of the piston device of the present invention.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like, referred to or may be referred to in this specification, are defined relative to their configuration, and are relative concepts. Therefore, it may be changed according to different positions and different use states. Therefore, these and other directional terms should not be construed as limiting terms.

The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a preferred structure of a piston device according to the present invention.

The piston device comprises a cylinder body 1, a piston 2 and a transmission assembly 3.

The cylinder body 1 is provided with an arc-shaped part 10, and the side wall of the arc-shaped part 10 is provided with a medium inlet 101 and a medium outlet 102;

the piston 2 is rotatably arranged on the arc-shaped part 10 of the cylinder 1, and a volume cavity A is formed between the piston 2 and the medium inlet 101 and the medium outlet 102;

the transmission assembly 3 is connected with the piston 2 and can drive the piston 2 to rotate.

The cylinder body 1 is provided with the arc-shaped part 10, the side wall of the arc-shaped part 10 is provided with the medium inlet 101 and the medium outlet 102, a volume cavity A is formed between the piston 2 and the medium inlet 101 and the medium outlet 102, the volume of the volume cavity A changes along with the reciprocating rotation of the piston 2, when the volume of the volume cavity A is enlarged, a medium enters the volume cavity A from the medium inlet 101, when the volume of the volume cavity A is reduced, the medium is discharged from the medium outlet 102, the functions of sucking the medium and discharging the medium are realized, and when the piston 2 moves, the piston 2 cannot generate lateral pressure on the cylinder wall, the friction resistance is reduced, and the efficiency is improved.

Specifically, the piston 2 is plate-shaped, the arc portion 10 has an arc surface 100, and the arc surface 100 of the present embodiment has a sector-shaped cross section.

One end of the piston 2 is rotatably disposed at one side opposite to the arc-shaped surface 100 through a rotating shaft 9, and one end of the piston can slide along the arc-shaped surface 100.

The plate-shaped piston 2 is simple in structure and convenient to install, and the piston 2 cannot generate lateral pressure on a cylinder wall when rotating due to the positioning effect of the rotating shaft 9, so that the friction resistance is reduced.

Preferably, the piston 2 includes two plates, a sealing groove 20 is formed in a gap between the two plates, and a sealing member 21 is disposed at one end of the two plates, which is close to the arc surface 100. The piston 2 is provided with two layers and the sealing member 21 is added, so that the sealing effect can be improved, and the medium can be prevented from leaking out of the end part of the piston 2.

Further, the rotating shaft 9 is pivotally connected and fixed through a bearing 91, and the bearing 91 is a rolling bearing or a sliding bearing. The rolling bearing and the sliding bearing are simple in structure, convenient to install and use and stable in structure.

Preferably, the transmission assembly 3 comprises a crankshaft 31 and a connecting rod 32; one end of the crankshaft 31 is pivotally connected to an external power source, the other end thereof is hinged to one end of the connecting rod 32, and the other end of the connecting rod 32 is connected to the piston 2. The crankshaft 31 is rotated by an external power source, so that the connecting rod 32 is rotated to drive the piston 2 to rotate back and forth in the arc portion 10.

Further, the piston device further comprises a crankshaft support 4, and the one end of the crankshaft 31 is pivoted through the crankshaft support 4. The one end of the crankshaft 31 is pivoted through the crankshaft support 4, so that the pivoting of the crankshaft 31 is more stable.

In addition, the piston device further comprises a connecting support 5, the connecting support 5 is fixedly connected with the piston 2, and the other end of the connecting rod 32 is hinged to the connecting support 5.

Preferably, the other end of the connecting rod 32 is hinged to the connecting support 5 through a pin 6. The pin shaft 6 is simple in structure, convenient to install and use and suitable for being used as a hinged connecting piece.

Further, the cylinder body 1 comprises an upper cylinder body 11 and a lower cylinder body 12, and the upper cylinder body 11 is detachably connected with the lower cylinder body 12. The upper cylinder 11 and the lower cylinder 12 of the present embodiment are preferably detachably connected by bolts.

The arc portion 10 is located at the upper cylinder 11. One end of the connecting rod 32 is pivoted in the lower cylinder 12, and the crankshaft support 4 of the embodiment is also arranged in the lower cylinder 12.

Will cylinder body 1 is even last cylinder body 11 and lower cylinder body 12, it acts on the medium business turn over to go up cylinder body 11, lower cylinder body 12 is then used for the installation drive assembly 3, and can dismantle the connection and conveniently carry out dismouting maintenance to the structure in the cylinder body 1.

Further, a rotatable inlet baffle 7 is arranged on the inner side of the medium inlet 101.

The outside of the medium outlet 102 is provided with a rotatable outlet baffle 8.

Preferably, the inlet baffle 7 and the outlet baffle 8 are pivotally fixed to the side walls of the arc portion 10 by a rotating shaft, respectively.

An inlet baffle 7 and an outlet baffle 8 are respectively arranged on the inner side of the medium inlet 101 and the outer side of the medium outlet 102, and a one-way channel is respectively formed on the medium inlet 101 and the medium outlet 102, so that the medium is prevented from flowing out of the medium inlet 101 and is prevented from flowing in from the medium outlet 102.

The piston device can be used as an internal combustion engine, an air compressor, a liquid pump and the like, and the efficiency is improved. When the pump is used as a pump, the output flow is uniform; when the engine is used as an internal combustion engine, the engine outputs power and has relatively uniform rotating speed.

Compared with the prior art, the piston device has the advantages that the arc-shaped part 10 is arranged on the cylinder body 1, the medium inlet 101 and the medium outlet 102 are formed in the side wall of the arc-shaped part 10, the volume cavity A is formed between the piston 2 and the medium inlet 101 and the medium outlet 102, the volume of the volume cavity A is changed along with the reciprocating rotation of the piston 2, when the volume of the volume cavity A is enlarged, a medium enters the volume cavity A from the medium inlet 101, when the volume of the volume cavity A is reduced, the medium is discharged from the medium outlet 102, the functions of sucking the medium and discharging the medium are realized, and when the piston 2 moves, the piston 2 cannot generate lateral pressure on the cylinder wall, the friction resistance is reduced, and the efficiency is improved. The piston device has the characteristics of simple structure, small frictional resistance, high efficiency and the like.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.