WO2012163234A1

WO2012163234A1 - Stopcock mechanism and star-shaped rotary wheelwork applying same

Info

Publication number: WO2012163234A1
Application number: PCT/CN2012/075811
Authority: WO
Inventors: 姚其槐; 姚镇
Original assignee: 北京星旋世纪科技有限公司
Priority date: 2011-05-31
Filing date: 2012-05-21
Publication date: 2012-12-06
Also published as: CN102808654A; CN102808654B

Abstract

Disclosed is a stopcock mechanism (200), comprising a stopcock blade main body (210) and a stopcock blade spindle (220). The stopcock blade main body (210) comprises a rotating part located in the centre thereof and N stopcock blades thereabout, wherein N ≥ 2; and a gauge hole running through the core of the rotating part. The stopcock blade spindle (220) is able to pass through the gauge hole to clamp the stopcock blade main body (210); and the stopcock blades comprise a protruding part (214), the protruding part (214) protruding radially with respect to the rotating part. Also disclosed is a planetary rotation-type rotation device having said stopcock mechanism. In a workflow the stopcock mechanism can equalize fluid pressure torque to which it is subjected, thereby avoiding the influence of fluid backpressure, the stopcock mechanism opening/closing easily; a roller planetary piston wheel can pass through a critical area easily; and, at the same time as the stopcock mechanism is activated, the next closing operation can immediately be completed, thereby meeting the requirement of a high switching rate.

Description

Rotary valve mechanism and star-rotating rotating device using the same

The invention relates to the technical field of engines, fluid motors, compressors and pumps in the mechanical industry, and in particular to a rotary valve mechanism and a star-rotating rotating device using the rotary valve mechanism. Background technique

For the engine field, there are mainly reciprocating piston four-stroke engines, delta rotor engines, gas turbines and the like. In the construction of hydraulic or pneumatic motors, there are mainly plunger type, vane type and turbine type, which are relatively monotonous. In the traditional fields of compressors and pumps, there are many mechanical structures such as plug type, vane type, gear type, screw type, crank type and scroll type. People are constantly improving and innovating while applying these mechanical structures.

In the patent application (Patent Application No.: 201010196950.8) filed on Jun. 10, 2010, the disclosure of which is incorporated herein by reference. The entire contents of the above-identified patent application are incorporated herein by reference.

Taking the fluid motor of the above patent application as an example, the basic structure and working principle of the star-rotating rotating device will be described as the prior art of the present invention. Figure la is a schematic illustration of a side cross section of a prior art fluid motor structure. Figure lb is a schematic diagram showing the principle of rotation of the main rotating elements of the prior art fluid motor. As shown in Figures la and lb, the star-rotating fluid motor comprises: a cylinder 1 having a cylindrical cavity and a spindle 3 supported by the end caps 2 on both sides of the cylinder, between the cylinder and the end caps The sealing ring 4 is sealed against fluid leakage, and a planetary gear rotating device for rotating the main shaft is arranged around the main shaft. The cylinder cylinder surface is a circular surface around the main shaft, and a rotary valve piece is arranged along the cylinder axial direction on the cylinder cylinder surface. a rotary valve piece 6 is mounted in the groove 5 of the rotary valve piece groove 5, and the tail end of the rotary valve piece is fixed on the side end cover 2 by the rotary valve piece supporting mandrel 7, and the rotary valve piece supports the mandrel 7 and the cylinder block The axial center line of the cylinder is arranged in parallel, the end surface of the rotary valve piece is a circular arc surface 6-1, and the rotary valve piece is centered on the rotary valve piece supporting mandrel 7 along a longitudinal side 5-1 of the groove of the rotary valve piece. Fan-shaped swing, during the swinging process, the arc surface of the rotary valve piece is in contact with the side surface of the groove of the rotary valve piece, and the through hole of the bottom surface of the groove of the rotary valve piece is provided with the through hole as the power source input port 1-1. The cylinder body on one side of the rotary valve piece supporting mandrel is provided with a through hole from the cylindrical surface of the cylinder inner wall to the outer surface of the cylinder as a power source discharge port 1- 2; planetary wheel rotation device includes: planetary piston wheel 8, planetary piston wheel fixing flange 9 and The sun piston wheel 10; the planetary piston wheel is a cylindrical roller (hereinafter referred to as a roller planetary piston wheel), the roller planetary piston wheel is fixedly fixed on the roller planetary piston wheel fixing flange, and the roller planetary piston wheel is rolled through the bearing 11 On a support shaft 12, the two ends of the support shaft 12 are fixedly connected with the fixed flange of the roller planetary piston wheel, and the fixed flange of the roller planetary piston wheel is sealed with the cylinder through the sealing ring 13, and the roller planetary piston wheel is fixed. The blue is fixed to the main shaft through the key 18, and the rotation of the planetary piston wheel of the roller drives the fixed flange of the planetary piston wheel to rotate, the rotation of the fixed flange of the planetary piston wheel of the roller drives the main shaft to rotate; the central sun gear roller covers the main shaft and is arranged on the roller planet Between the piston wheel and the main shaft, an annular piston space 19 in which the roller planetary piston wheel rotates is formed between the outer cylindrical surface of the center sun gear and the cylindrical surface of the cylinder. The main shaft bearing 14 is mounted on the end cover 2 on both sides of the cylinder block, the bearing front cover 15 and the bearing rear cover 16 enclose the end covers on both sides, and the inner hole of the bearing front cover 15 through which the main shaft 3 is inserted is embedded with a fluid leakage prevention The moving sealant ring 17 and the end caps 2 on both sides of the cylinder block are fastened to the cylinder block 1 by screws.

For the fluid motor shown in FIGS. 1a and 1b, the working flow is as follows: a pressurized gas or liquid is injected into the groove of the cylinder rotary valve from the power source input port of the cylinder, and the gas or liquid pushes the rotary valve piece. A fan-shaped swing is made downward along one side of the rotary valve piece groove centering on the rotary valve piece supporting mandrel, and the head of the rotary valve piece pushes the planetary piston wheel to rotate forward, and then the pressurized gas or liquid rushes into the ring shape. The piston space continues to push the planetary piston wheel forwardly along the annular piston space, and the planetary piston wheel is rotated forward to squeeze gas or liquid out of the power source discharge port, and is separated after being swung downward from the rotary valve plate to the center sun gear roller. The adjacent piston space forms a gas or liquid pressure difference, and the planetary piston wheel presses the rotary valve plate to swing upward and reset to the next reciprocating cycle during the forward rotation.

In the above technical solution, since the annular hydraulic (pneumatic) cylinder is used, the outer circumferential space of the machine is utilized to the utmost, and the torque is large, the output torque is large, the flow rate is large, and the output is constant. In addition, since the main component piston adopts the rolling mode, the frictional wear of the piston and the cylinder body is substantially reduced, the sealing reliability is improved, and the energy consumption is reduced.

The rotary valve piece in the above technical solution has a simple structure, and can realize the basic requirement of opening/closing of the annular piston space in the star-rotating rotating device. However, the applicant realizes that the existing rotary valve plate technology still has the following limitations. Defect: Because its structure is not symmetrical, the rotary valve is affected by fluid back pressure during the work process. It will be subjected to certain resistance when opening/closing and requires a long switching time, although it is in the low speed range. Still have a good table Now, in order to meet the requirements of higher speed switching frequency, the rotary valve structure must evolve. Summary of the invention

(1) Technical problems to be solved

In order to solve the above-mentioned limitations of the technical defects, the present invention provides a rotary valve mechanism and a star-rotating rotating device using the rotary valve mechanism, so as to avoid the adverse effect of the rotary valve mechanism on the back pressure of the fluid in the working process, and satisfy the high Switch frequency requirements.

(ii) Technical solutions

According to an aspect of the invention, a rotary valve mechanism is provided. The rotary valve mechanism comprises: a rotary valve body and a rotary valve core; wherein, the rotary valve body comprises: a rotating portion located therebetween and N rotary valve pieces located around the same, N 2; the center of the rotating portion has a positioning hole penetrating through the rotating portion; the rotary valve core can be threaded through the positioning hole to be locked with the rotary valve body; the rotary valve piece includes an extending portion extending in a radial direction of the rotating portion.

Preferably, in the rotary valve mechanism of the present invention, the distal end of the extension portion is provided with a groove in the direction of the central axis of the rotary valve body, and the groove is filled with a wear-resistant sealing material. The wear-resistant sealing material is one of the following materials: wear-resistant rubber, engineering plastic, phosphor bronze, or wear-resistant lubricating alloy, and the wear-resistant sealing material can be made into a roller or roller shape and groove-sliding.

Preferably, in the rotary valve mechanism of the present invention, both end faces of the rotary valve body are recessed into grooves in addition to the boundary portion thereof; and the anti-friction sealing member matched with the groove is installed in the groove.

Preferably, in the rotary valve mechanism of the present invention, the N rotary valve sheets are uniformly disposed along the tangential direction of the rotary portion, and N is 3 or 4.

According to another aspect of the present invention, there is also provided a star-rotating rotating device comprising the above-described rotary valve mechanism. The star-rotating device comprises: an annular piston space; a cross-sectional shape of the rotary valve piece extension corresponding to the annular piston spatial cross-sectional shape; the outer side of the annular piston space is provided with a semi-cylindrical groove, and the semi-cylindrical groove is provided with Two sets of outer through holes connected by the outside, two sets of outer through holes are respectively disposed on both sides of the central axis of the semi-cylindrical groove; the rotary valve mechanism is disposed in the semi-cylindrical groove; the rotary valve core and the rotary valve body After locking, the two ends of the semi-cylindrical groove are passed along the central axis of the semi-cylindrical groove; the rotary valve mechanism is switched between the open position and the closed position; in the closed position of the rotary valve mechanism, the distal end of the extension is The inner side of the annular piston space is in contact with each other, and the annular piston space is divided into two variable volume piston spaces, and the two sets of outer through holes are respectively combined with two volumes. The variable piston space is connected to each other.

Preferably, in the star-rotating device of the present invention, when the rotary valve mechanism is switched between the open position and the closed position by the roller planetary piston wheel, the rotary valve piece further includes a protruding portion; the protruding portion is located at the extending portion a distal end extending in a tangential direction along the extension; the two sets of outer through holes are respectively in communication with the two volume variable piston spaces through a gap between the projections on the two rotary valve sheets; the roller planetary piston wheel is During the rolling process of the annular piston, the protruding portion of the rotary valve mechanism is pushed to rotate the rotary valve mechanism to the open position; after the planetary piston wheel of the roller passes, the rotary valve mechanism enters the next closed position.

Preferably, in the star-rotating device of the present invention, the star-rotating device includes: a position locking mechanism when the rotary valve mechanism is urged by the roller planetary piston wheel to switch between an open position and a closed position. The position locking mechanism is located outside the annular piston space for locking the closed position of the rotary valve mechanism, so that the rotation of the rotary valve mechanism is intermittent 360/N degree indexing rotation.

Preferably, in the star-rotating device of the present invention, when the rotary valve mechanism is driven by the external driving device to switch between the open position and the closed position, the star-rotating device further includes: an intermittent indexing wheel located in the annular piston space. Externally, the part of the rotary valve core is located outside the annular piston space, and the mechanically driven indexing mechanism is connected to the intermittent indexing wheel for intermittent 360/N driving of the intermittent indexing wheel. After the indexing movement, the closed position of the rotary valve mechanism is locked. Preferably, the mechanically driven indexing mechanism is an indexing cam, an incompletely interlocking gear or a sheave mechanism. Preferably, the mechanically driven indexing and positioning mechanism is an outer sheave mechanism; and the outer peripheral circumference of the slotted intermittent indexing wheel of the outer sheave mechanism is provided with a rolling bearing for reducing friction.

Preferably, in the star-rotating device of the present invention, when the rotary valve mechanism is driven by the external driving device to switch between the open position and the closed position, the star-rotating device further includes: a position sensor for acquiring a valve that is about to pass through Position information of the planetary piston wheel in the critical section; an external electric drive positioning mechanism, located outside the annular piston space, connected to the position sensor for information on the position of the planetary piston wheel that is about to pass through the critical section of the rotary valve The rotary valve core is driven by the servo motor to perform the indexing movement in an intermittent 360/N degree, and then locked by the parking torque of the servo motor.

(3) Beneficial effects

The rotary valve mechanism of the present invention can balance the fluid pressure torque received in the workflow. Thereby, the influence of the fluid back pressure can be avoided, the rotary valve mechanism is easy to open/close; the roller planetary piston wheel can easily pass through the critical region; and the next closing action can be completed immediately while the rotary valve mechanism is opened, thereby satisfying the high switching frequency. Requirements. DRAWINGS

Figure la is a schematic view of a side cross section of a prior art fluid motor structure;

Figure 1b is a schematic view showing the principle of rotation of the main rotating elements of the prior art fluid motor; Figure 2a-1 is a perspective view of the first 4-blade valve body of the embodiment of the present invention;

2a-2 is a perspective view of a four-blade valve body of the anti-friction sealing structure capable of automatically compensating for the wear amount on both sides of the cross-rotating valve according to an embodiment of the present invention;

2a-3 is a perspective view of a four-blade rotary valve body of the anti-friction sealing rolling element structure on both sides of the cross-rotating valve according to an embodiment of the present invention;

2b is a perspective view of a second 4-blade rotary valve body according to an embodiment of the present invention;

2c is a perspective view of a third type of 4-blade rotary valve body according to an embodiment of the present invention;

3a is a schematic structural view of a star-rotating device according to an embodiment of the present invention;

Figure 3b is a cross-sectional view of the star-shaped rotating device shown in Figure 3a along the A-A direction;

4-1 is a schematic diagram of a working process of step S401 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-2 is a schematic view showing a flow S402 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-3 is a schematic diagram of a working process of step S403 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-4 is a schematic diagram of a working process of step S404 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-5 is a schematic view showing a flow S405 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-6 are schematic diagrams showing a flow S405 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-7 are schematic diagrams showing a flow S405 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention; 4-8 are schematic diagrams showing a flow S490 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-9 are schematic diagrams showing a flow S490 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-10 are schematic diagrams showing a flow chart S410 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-11 are schematic diagrams showing a flow chart S411 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-12 are schematic diagrams showing a flow chart S412 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-13 are schematic diagrams showing a flow S513 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

4-14 are schematic diagrams showing a flow S514 of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention;

Figure 5 is a schematic view showing the force of a rotary valve plate in a rotary valve mechanism according to an embodiment of the present invention;

6 is a schematic view of a first position locking mechanism of a star-rotating device according to an embodiment of the present invention; FIG. 7 is a schematic view showing a second position locking mechanism of a star-rotating device according to an embodiment of the present invention; a perspective view of the assembly relationship between the leaf rotary valve mechanism and the second position locking mechanism;

9-1 is a schematic view showing a step S901 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention;

9-2 is a schematic view showing a step S902 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention;

9-3 is a schematic view showing a step S903 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention;

Figure 9-4 is a schematic view showing a step S904 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention;

9-5 is a schematic view showing a step S905 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention;

9-6 is a flow chart of a second position locking mechanism of a star-rotating rotating device according to an embodiment of the present invention; Schematic diagram of step S906;

9-7 are schematic views showing a step S907 in the working process of the second position locking mechanism of the star-rotating rotating device according to the embodiment of the present invention.

10 is a schematic view of a third position locking mechanism of a star-rotating rotating device according to an embodiment of the present invention; FIG. 11a is a perspective view of a three-leaf rotary valve body according to an embodiment of the present invention;

Figure lib is a cross-sectional view of a star-rotating rotating device applying the above-described 3-blade rotary valve mechanism according to an embodiment of the present invention;

Figure 11c is a perspective view showing the assembly relationship between the 3-blade rotary valve mechanism and the position locking mechanism of the present invention; Figure 12a is a schematic view showing the 3-blade rotary valve mechanism of the star-rotating rotary device in the first position according to the embodiment of the present invention;

Figure 12b is a schematic view showing the 3-blade rotary valve mechanism of the star-rotating rotating device in a second position according to an embodiment of the present invention;

13 is a schematic view of a star-rotating rotating device driven by a mechanical method according to an embodiment of the present invention; FIG. 14 is a perspective view of a star-rotating rotating device using a 90-degree outer groove wheel indexing driving rotary valve mechanism according to an embodiment of the present invention;

Figure 15-1 is a schematic view showing a workflow step S1501 of a star-rotary rotating device using a 120-degree outer groove indexing drive mechanism according to an embodiment of the invention;

Figure 15-2 is a schematic view showing a workflow step S1502 of a star-rotary rotating device using a 120-degree outer groove indexing drive mechanism according to an embodiment of the invention;

Figure 15-3 is a schematic view showing a workflow step S1503 of a star-rotary rotating device using a 120-degree outer groove indexing drive mechanism according to an embodiment of the invention;

Figure 15-4 is a schematic view showing a workflow step S1504 of a star-rotary rotating device using a 120-degree outer groove indexing drive mechanism according to an embodiment of the invention;

Figure 15-5 is a schematic view showing a workflow step S1505 of a star-rotary rotating device using a 120-degree outer groove indexing drive mechanism according to an embodiment of the invention;

Figure 16 is a block diagram showing the control of a rotary valve mechanism electrically driven by a star-type rotating device according to an embodiment of the present invention.

Figure 17a is a schematic view showing the operation of a fluid motor to which the cross-rotating valve structure of the embodiment of the present invention is applied; Figure 17b is a schematic view showing the operation of the engine to which the cross-rotating valve structure of the embodiment of the present invention is applied; Figure 17c is a cross-rotating valve structure to which the embodiment of the present invention is applied The operation of the compressor and pump detailed description

The present invention will be described in detail below with reference to the accompanying drawings and drawings. For the sake of understanding, the main components involved in this application are numbered first, as follows: Small:

[Main component symbol description]

1-cylinder; 1- 1 first through hole;

I-2 second through hole; 2-cylinder sealed end cover;

3-spindle; 4-seal ring;

5-groove; 5- 1- longitudinal side;

6-rotary valve piece; 6- 1-circular surface;

7-Rotary valve mandrel; 8-roller planetary piston wheel;

9-roller planetary piston wheel fixing flange; 10-center sun gear roller;

II-bearing; 12-support shaft;

13-seal ring; 14-spindle bearing;

15-bearing front cover inner hole; 16-bearing rear cover;

17-sealing rubber ring; 18-key;

19-annular piston space; 20-seal ring;

100-semi-cylindrical groove; 101, 102-outer through hole;

200-turn valve mechanism;

210-Rotary valve body; 220-Rotary valve core;

212-intermediate portion; 214-extension portion;

214a-groove; 216 (216a, 216b) - projection; 218-side groove; 218a-side sealing member;

218b-compression spring; 219-deep side groove;

219a-side sealing rolling body; 219b-side sealing rolling pin pin hole;

300-position locking mechanism;

301-Star wheel driven intermittent indexing wheel; 302-index positioning pin;

303-compression spring; 304-pressure wheel; 305-indexing cam slot; 310-intermittent indexing wheel driven by peripheral indexing drive mechanism;

321-magnet type intermittent indexing wheel; 322-positive indexing magnet;

323-negative indexing magnet.

14-1-rolling bearing;

14-2-Center groove wheel locking cylinder surface;

a concave outer cylindrical surface of the 14-3-intermittent indexing wheel 310;

For the working principle of the above-mentioned star-rotating device, reference is made to the above-mentioned patent application (Patent Application No.: 201010196950.8), the entire contents of which are incorporated herein by reference. The agency will explain.

In a basic embodiment of the invention, a rotary valve mechanism is provided. The rotary valve mechanism comprises: a rotary valve body and a rotary valve core; wherein, the rotary valve body comprises: a rotating portion located therebetween and N rotary valve pieces located around the same, N 2; the center of the rotating portion has a positioning hole penetrating through the rotating portion; the rotary valve core can be threaded through the positioning hole to be locked with the rotary valve body; the rotary valve piece includes an extending portion extending in a radial direction of the rotating portion. In this embodiment, there are three points to be explained:

(1) The number of rotary valve plates: the above N rotary valve plates are evenly arranged along the tangential direction of the rotary valve plate body, and the number of rotary valve plates is mainly according to the size of the annular piston space, the switching frequency achieved by the rotary valve mechanism, and assembly. Factors such as difficulty level and control level are determined. Preferably, the number of rotary valve sheets is three or four, and corresponding embodiments will be respectively given hereinafter;

(2) The anti-friction seal of the extension: Take the rotary valve mechanism into the annular piston space of the star-rotating rotating device as an example. In order to avoid leakage of fluid in the annular piston space in the fluid machine, the extension and the central sun gear must be sealed. . In order to avoid excessive friction between the extension and the central sun gear, causing wear of the extension and making the rotation of the planetary sun gear difficult, it is necessary to consider the problem of the wear reduction of the extension. Preferably, the distal end of the extending portion is provided with a groove along the central axis of the rotary valve body, the groove is filled with a wear-resistant sealing material, and the wear-resistant sealing material can be formed into a roller or a roller shape to be slip-fitted with the groove. The wear-resistant sealing material is one of the following materials: wear-resistant rubber (fluororubber, NBR, urethane rubber, etc.:), engineering plastics (PEEK, RTFE, etc.), phosphor bronze or wear-resistant lubricant alloy (such as babbitt).

(3) The anti-friction seal on the side of the rotary valve mechanism: Since the scene of the rotary valve mechanism is high cut In the case of changing the frequency, therefore, the side wear reduction seal is also very critical. In a preferred embodiment of the present invention, both end faces of the rotary valve body are recessed into grooves in addition to the boundary portion thereof; and a wear-reducing sealing member matching the groove is mounted in the groove. The wear-reducing sealing member may be a plate-like structure or a rolling-element structure. In the first case: the groove is a flat plate-like structure, and the bottom of the groove is provided with a small hole; and the wear-reducing sealing member of the same plate-like structure abuts against the rotary valve piece body through a compression spring installed in the small hole. In the second case: the groove is a discrete cylindrical or partially cylindrical shape, and the wear-reducing sealing member is a rolling-element structure; the anti-friction sealing member of the rolling-element structure is connected to the rotary valve body through a rotating shaft at both ends thereof.

The wear-reducing sealing member abuts against the rotary valve body through a compression spring mounted in the small hole. In the above embodiment, the compression spring is disposed in the small hole to achieve the sealing of the sealing member and the side surface of the annular piston of the external star-rotating rotating device. Those skilled in the art should realize that other methods can be used to achieve the same. purpose. A detailed description will be given below.

The rotary valve structure of the embodiment is applied to an annular piston space of an engine, a fluid machine, or a compressor and a pump, and the annular piston space is divided into two variable volume piston spaces for realizing the piston space and the external power source. Switching operation of communication between the ingress and egress. Different from the prior art, the rotary valve piece has difficulty in switching by one-way force between the open position and the closed position. This embodiment utilizes a symmetrical structure of "circle", and the rotary valve mechanism performs switching operations on both sides. The rotary valve plate is subjected to the same pressure of the fluid, thereby avoiding the influence of the fluid back pressure, so that the rotary valve mechanism is easy to open/close. Moreover, while the rotary valve piece enters the open position, the rotary valve piece can immediately enter the closed position, which greatly shortens the switching operation time, and can adapt to the requirement of the higher speed switching frequency of the star-shaped fluid machine.

According to the different power sources of opening/closing of the rotary valve mechanism, the rotary valve mechanism can be divided into two categories: 1) The first type of rotary valve mechanism does not have an independent drive mechanism, and the power source of the opening/closing is the roller. The push of the planetary piston wheel; 2) The second type of rotary valve mechanism has an independent drive mechanism, and after the roller planetary piston wheel reaches a certain position of the annular piston space, the rotary valve mechanism automatically switches, that is, when the rotation is performed, Not in contact with the roller planetary piston wheel. The first type of rotary valve mechanism will be highlighted below. The second type of rotary valve mechanism will also be described in the last part of this paper.

In a further embodiment of the invention, a first type of rotary valve mechanism as described above is provided. The spin The valve mechanism includes: a rotary valve body and a rotary valve core. Wherein, the rotary valve body comprises: a rotating portion located therebetween and N radial valve pieces N 2 disposed around the circumference thereof. The center of the rotating portion has a positioning hole penetrating through the rotating portion; the rotary valve core can be threaded through the positioning hole to be locked with the rotary valve body. The rotary valve piece includes: an extending portion and a protruding portion extending in a radial direction of the rotating portion; the protruding portion is located at a distal end of the extending portion and extends along a tangential direction of the rotary valve body, the protruding portion The inside is set to an arc shape. In this embodiment, there are two points to be explained:

1) The inner arc of the projection: The inner side is curved to ensure that the roller planetary piston wheel can smoothly push the rotary valve mechanism. Therefore, the arc should be set according to the radius of the planetary piston wheel of the roller and can smoothly extend to the rotating portion.

2) the number and position of the projections: the function of the projections is to facilitate the rotation of the rotary valve mechanism by the roller planetary piston wheel, and the fluid entering from the through hole can be from the projection when in the closed position Intermittently enter or exit the annular piston space. Therefore, the number and position of the projections can be determined according to the position and number of the outer through holes. Preferably, the projections should be bilaterally symmetrical to eliminate excess stress. It is recommended that the projection has the following arrangement: 1) Two projections are respectively located at the axial ends of the extension of the rotary valve piece (as shown in Fig. 2a-1); 2) one is located at the extension a projection at an intermediate position (as shown in FIG. 2b); 3) providing a projection equal to the longitudinal length of the extension, and providing a set in the middle of the projection corresponding to the outer opening of the annular piston space Through hole (as shown in Figure 2c). It should be noted that whether the design of the through hole or the intermittent design between the one or more projections is required to cooperate with the outer through hole of the subsequent annular piston space. Two specific rotary valve body bodies are shown below. FIG. 2a-1 is a perspective view of the first four-blade valve body of the embodiment of the present invention. As shown in FIG. 2a-1, wherein the rotary valve body 210 includes: a rotating portion 212 and four rotary valve sheets. Each of the rotary valve sheets further includes: an extension portion 214 and a projection portion 216. The longitudinal shape of the entire rotary valve mechanism 200 is a cross (referred to as a cross rotary valve mechanism), and the four rotary valve plates are symmetrical with respect to the central axis of the rotary valve body 210; the lateral shape of the rotary valve plate corresponds to the lateral shape of the piston space 19. The rotary valve piece has two projections - 216a and 216b, which are respectively located at both sides of the distal end of the extension portion in the direction of the central axis of the rotary valve body. The intermediate portions of the two projections serve as passages for the fluid inlet/outlet (101 and 102 in Fig. 3b) of the star-rotating device and the inner through holes of the two variable-capacity piston spaces. 2a-2 is a perspective view of a four-blade valve body of the anti-friction sealing structure that automatically compensates for the wear amount on both sides of the cross-rotating valve according to an embodiment of the present invention. As shown in FIG. 2a-2, a groove 218 having a plate-like structure is formed on both sides of the rotary valve body 210, and a small hole for mounting the compression spring 218b is opened at the bottom of the groove 218 to fit the sliding fitting into the groove. The inner anti-friction sealing plate 218a is pre-applied to the pressure that can be stopped.

2a-3 is a perspective view of a four-blade valve body of the anti-friction sealing rolling element structure on both sides of the cross-rotating valve according to an embodiment of the present invention. As shown in Fig. 2a-3, a deep groove 219 for rolling elements is formed on both sides of the rotary valve body 210, and pin holes 219b for supporting the rotation of the roller 219a are formed at both ends of the groove.

The material for the anti-friction sealing structure may be an engineering plastic such as polytetrafluoroethylene, phosphor bronze, or a wear-resistant lubricating alloy.

Fig. 2c is a perspective view of a second four-blade valve body according to an embodiment of the present invention. The rotary valve body shown in Fig. 2c differs from the rotary valve body shown in Fig. 2a in that the rotary valve piece has a projection having a length equal to the overall lateral length of the rotary valve piece, and the projection is provided in the middle of the set. The through hole, the fluid inlet/outlet of the star-rotating rotating device is respectively communicated with the two volume variable piston spaces through the set of inner through holes on the two rotary valve sheets, and the through holes in the group may include one or two Or 3 inner through holes.

A star-rotary rotating device using a rotary valve mechanism as shown in Fig. 2a will be described in detail below. 3a is a schematic structural view of a star-rotating rotating device using the above-described 4-blade rotary valve mechanism according to an embodiment of the present invention; and FIG. 3b is a cross-sectional view of the star-shaped rotating device shown in FIG. 3a along the AA direction. As shown in Figures 3a and 3b, the star-rotating device comprises: an annular piston space 19, the outer side of the annular piston space 19 is provided with a semi-cylindrical groove 100 (actually a large semi-cylindrical shape), such as the above-mentioned cross The rotary valve mechanism is disposed in the semi-cylindrical groove 100; after the rotary valve core shaft 220 and the rotary valve body 210 are locked, the axial sides of the semi-cylindrical groove 100 are passed to the outside of the piston space; The groove 100 is provided with two sets of outer through holes (101 and 102) communicating with the outside, and the two sets of outer through holes are respectively disposed on both sides of the axis of the semi-cylindrical groove 100; the roller planetary piston wheel 13 is in the process of rolling Pushing the projection 216 of the cross-rotor mechanism to switch the cross-rotor mechanism between the open position and the closed position; in the closed position of the cross-rotor mechanism, the distal end of the extension 204 and the outer cylinder of the central sun gear 10 Face contact, dividing the annular piston space into two variable volume piston spaces; two sets of outer through holes (101 and 102) respectively pass through the gap between the two protrusions It is in communication with two variable volume piston spaces. In combination with the above-mentioned star-rotating rotating device, the star-rotating rotating device further comprises: a cylinder 1 of a cylindrical cavity and a main shaft 3 supported by the cylinder sealing end cover 2 on both sides of the cylinder, and the central sun gear 10 is sleeved On the main shaft 3; the outer cylindrical surface of the central sun gear 10 and the inner cylindrical surface of the cylinder 1 constitute an annular piston space 19 in which the roller planetary piston wheel 8 is placed in a rolling manner.

For fluid machines, the outer through hole 101 communicates with an external fluid inlet port, and the outer through hole 102 communicates with an external fluid outlet. Taking the engine as an example, the outer through hole 101 communicates with the high-voltage electronically controlled direct-injection passage of the combustion chamber, and the outer through-hole 102 communicates with the exhaust gas discharge port. Fluid machines, compressors or pumps are similar and will not be described in detail here. The semi-cylindrical groove 100 is a place for accommodating the rotary valve mechanism, and its shape is set to be cylindrical, and its depth can be set according to the shape of the annular piston space 19 and the roller planetary piston wheel 8, the position of the through hole, and the like. The workflow of the continuously-intake air motor of the present invention using a rotary valve mechanism will now be described.

4 is a schematic view showing the working process of a pneumatic motor using a rotary valve mechanism according to an embodiment of the present invention. As shown in FIG. 4, this embodiment includes the following processes:

Step S401, the roller planetary piston wheel (A wheel) pushes the rotary valve mechanism from the protruding portion of the rotary valve mechanism, and the extension portion of the rotary valve mechanism abuts the lower end of the through hole of the intake valve, and the intake valve is closed. As shown in Figure 4-1;

Step S402, the A wheel pushes the rotary valve piece of the rotary valve mechanism forward, the extension of the rotary valve mechanism is located above the through hole of the intake valve, and the interval of the intake valve through the protrusion of the rotary valve mechanism and the piston space Connected, that is, the upper intake valve is opened, the upper intake starts, and the A wheel starts to work, as shown in Figure 4-2. Step S403, under the push of the airflow, the A and C wheels output, driving the spindle to rotate, as shown in the figure 4-3;

Step S404, the A wheel and the C wheel continue to work, and the B wheel contacts the protrusion of the lower rotary valve piece, as shown in Fig. 4-4;

Step S405, the B wheel passes through the lower critical zone. At this time, the C wheel stops working. As shown in Figure 4-5, step S406, the B wheel pushes the rotary valve mechanism from the protruding portion of the rotary valve mechanism, and the rotation of the rotary valve mechanism The upper end of the lower intake valve is closed, and the lower intake valve is closed, as shown in Figure 4-6. In step S407, the B wheel continues to push the rotary valve of the rotary valve mechanism. Institutional extension The lower part is located below the through hole of the lower intake valve, and the lower intake valve communicates with the piston space through the intermittent part of the rotary valve mechanism, that is, the lower intake valve is opened, the lower intake starts, and the B wheel starts to work, as shown in Fig. 4 7 steps S408, A and B continue to work, C wheel contacts the protrusion of the upper rotary valve, as shown in Figure 4-8;

Step S409, the C wheel passes through the critical section, and the A wheel stops working, as shown in Fig. 4-9. In step S410, the C wheel pushes the rotary valve mechanism from the protruding portion of the rotary valve mechanism, and the extension of the rotary valve mechanism is reached. Suspension of the upper end of the intake valve through hole, at this time, the upper intake valve is closed, as shown in Figure 4-10;

Step S411, the upper intake starts, and the C wheel starts to work, as shown in Figure 4-11.

Step S412, B and C work, as shown in Figure 4-12;

Step S413, the A wheel contacts the lower rotary valve piece, the B wheel and the C wheel work, as shown in Fig. 4-13; Step S414, the A wheel passes the lower critical zone, and the B wheel stops working, as shown in Fig. 4-14. . Fig. 5 is a schematic view showing the force of a rotary valve plate in a rotary valve mechanism according to an embodiment of the present invention. As shown in FIG. 5, by using the rotary valve mechanism of the present invention, since the moments caused by the fluid pressure of the adjacent two valve sheets cancel each other, the torque M1 generated by the fluid pressure of the horizontal valve surface at any time is equal to The vertical valve face is subjected to a torque M2 generated by fluid pressure. Therefore, the station switching is easy, and in the prior art, the rotary valve sheet has to overcome the influence of the application of the fluid pressure, and the switching is subjected to considerable resistance. The roller planetary piston wheel of the invention receives little resistance when passing through the critical section of the rotary valve plate, and the rotary valve mechanism is not affected by the back pressure of the working fluid, and can even be positioned by a spring pin (shown as 302 and 303 in Fig. 6). , Simple structure.

In a preferred embodiment of the invention, the star-rotating device includes a positional locking mechanism. The position locking mechanism is located outside the annular piston space for locking the closed position of the cross-rotor mechanism, so that the rotation of the cross-rotor mechanism is an intermittent 90-degree positioning movement. Embodiments of the three position locking mechanisms are given below, and those skilled in the art can also implement the same functions using other position locking mechanisms in the prior art, and should also be included in the protection scope of the present invention.

6 is a schematic view of a first position locking mechanism of a star-rotating rotating device according to an embodiment of the present invention. In this embodiment, the position locking mechanism 300 includes: a star wheel driven intermittent indexing wheel 301 located outside the annular piston space, locked with the rotary valve core shaft, and uniformly arranged with four indexing grooves on the outer side thereof (See Fig. 8), the position of the indexing groove corresponds to the cross rotary valve piece in the open position; the indexing positioning pin 302 is disposed along the radial direction of the indexing cam, and the top end thereof meshes with the indexing groove of the indexing cam 301; The compression spring 303 is disposed along the radial direction of the star-driven intermittent indexing wheel, one end of which abuts against the tail end of the indexing pin, and the other end of which is fixed to the cylinder sealing end cover. This embodiment is the simplest type of position locking mechanism. Under the elastic force of the compression spring, the indexing pin is in a relatively stable state in the indexing groove of the star-driven intermittent indexing wheel, which can ensure that the rotary valve mechanism is before the arrival of the next roller planetary piston wheel. Can be kept in the closed position.

Due to the friction between the head of the rotary valve and the surface of the sun gear, the rotation of the cross-rotor mechanism is driven, which seriously affects the reliability of the positioning. At the same time, at high speed, the high-speed vibration of the spring pin often has hysteresis, ie, high frequency. Responding to a problem that is not working. Therefore, in the case of high reliability requirements, the cam structure can be considered to accurately control the movement of the spring pin to ensure that the opening and closing position and rhythm of the cross-rotor mechanism are accurate.

Fig. 7 is a schematic view showing the structure of a second position locking mechanism of a star-rotating rotating device according to an embodiment of the present invention. Figure 8 is a perspective view showing the assembled relationship between the 4-blade rotary valve mechanism and the second position locking mechanism of the present invention. As shown in FIG. 7 and FIG. 8 , the position locking mechanism comprises: a star wheel driven intermittent indexing wheel 301 located outside the annular piston space, locked with the rotary valve core shaft, and uniformly arranged with four indexing grooves on the outer side thereof. The position of the indexing groove corresponds to the position of the cross-rotor valve in the closed position; the indexing pin 302 is disposed along the radial direction of the star-driven intermittent indexing wheel, and the top end thereof meshes with the indexing groove of the indexing cam 301; The indexing cam groove 305 is disposed on the cylinder sealing end cover on the side of the star-rotating rotating device; the pressure wheel 304 is divided into two parts of the axial connection: the roller part and the connecting part, the connecting part and the indexing positioning The ends of the pins are connected and the rollers are rolled in the indexing cam slots. In the working process, the pressure wheel 304 moves in the indexing cam groove, drives the indexing positioning pin 302 to move, locks or releases the star wheel driven intermittent indexing wheel 301, and the star wheel driven intermittent indexing wheel passes through the mandrel. 220 is coupled to the rotary valve body 210.

The star-rotating rotating device shown in Fig. 3a is similar to the star-rotating rotating device shown in Fig. 7, and the difference is that: the positional locking mechanism of the star-rotating rotating device shown in Fig. 3a is located inside the cylinder head, and is sealed. The positional locking mechanism in the star-rotating rotating device shown in Figure 7 is located on the outside of the cylinder head for easy commissioning.

9 is a schematic view showing the working flow of a second position locking mechanism of a star-rotating rotating device according to an embodiment of the present invention. The working flow of the position locking mechanism will be described below with reference to Fig. 9. Figure 9 As shown, the workflow of the position locking mechanism includes the following steps:

Step S901, the roller planetary piston wheel enters the critical section of the cross-rotor mechanism, and the indexing positioning pin 302 has begun to move the position, as shown in Figure 9-1;

Step S902, the roller planetary piston wheel moves in the critical section of the cross-rotor mechanism, and the indexing positioning pin 302 makes the position movement start to enter the low point, as shown in Fig. 9-2;

Step S903, the roller planetary piston wheel is at the center of the critical section of the cross-rotating valve mechanism, and the indexing pin 302 is moved to the lowest point, as shown in Figure 9-3;

Step S904, the roller planetary piston wheel continues to rotate clockwise, and the indexing pin 302 is kept at the lowest point, as shown in Figure 9-4;

Step S905, the roller planetary piston wheel continues to rotate clockwise, and the indexing pin 302 is allowed to start to rise, as shown in Figure 9-5.

Step S906, the roller planetary piston wheel continues to rotate clockwise, and the indexing pin 302 is allowed to continue to rise, as shown in Figure 9-6.

Step S907, the roller planetary piston wheel will leave the critical section of the cross-rotor mechanism, the indexing pin is kept at the highest point, and the indexing pin 302 positions the indexing cam 301 of the cross-rotor mechanism to be locked.

In this embodiment, a set of cam mechanism locks the position of the cross-rotor mechanism, and when the roller planetary piston wheel passes through the critical section of the rotary valve plate, the rotary valve body can be automatically rotated, and the planetary piston wheel is opened. At the same time as the passage, the switching task of the valve closing is completed, and at the same time, the cam mechanism-controlled indexing pin is used to lock the cross-rotor mechanism to ensure the sealing performance of the next working space. It can be seen that the cam structure can accurately control the movement of the indexing pin to ensure the correct opening/closing position and rhythm of the rotary valve mechanism, and can meet the requirements of high switching frequency rotary valve plates such as fluid motors and engines. In addition, the position locking mechanism can take other forms.

In another embodiment of the invention, another position locking mechanism is disclosed. FIG. 10 is a schematic view showing a third position locking mechanism of the star-rotating rotating device according to an embodiment of the present invention. As shown in FIG. 10, the position locking mechanism includes: a magnet type intermittent indexing wheel 321, an N positive indexing magnet 322, and a negative indexing magnet 323. The magnet type intermittent indexing wheel 321 and the cross-rotor valve core shaft 220 extend outwardly from the annular piston space. The cross-rotor valve core shaft 220 pushes the magnet type intermittent indexing wheel 321 to perform intermittent indexing rotary motion. N positive indexing magnets 322 are uniformly disposed on the magnet type intermittent indexing On the outer circumference of the wheel. The negative indexing magnet 323 is fixed to the stator of the star-rotating device. After each rotation of 90 degrees, corresponding to the open position of the rotary valve mechanism, the magnet type intermittent indexing wheel 321 is fixed to the indexing position by the strong suction force between the positive indexing magnet 322 and the negative indexing magnet 323, and is repeated. One of ordinary skill in the art will appreciate that the positive indexing magnets described above are relatively opposed to the negative indexing magnets, and that magnets of the appropriate polarity can be assembled as desired. Furthermore, the magnet may be an electromagnet, preferably a permanent magnet.

Fig. 11a is a perspective view showing the body of a 3-blade valve piece according to an embodiment of the present invention. The rotary valve body shown in FIG. 11a is different from the rotary valve body of FIG. 2 in that the rotary valve body comprises a three-leaf rotary valve piece, and the protruding portions are integrally connected, and are disposed in the middle of the protruding portion. The inner through hole, the variable volume annular piston space communicates through the inner through hole first through hole or the second through hole. Figure lib is a cross-sectional view showing a star-rotating rotating device to which the above-described 3-blade rotary valve mechanism is applied in the embodiment of the present invention. The working principle is similar to the star-rotating rotating device shown in Figures 3a and 3b, and the description will not be repeated here. Fig. 11c is an assembled view showing the principle of positioning and locking of the star-rotating device of the above-described three-leaf rotary valve mechanism according to an embodiment of the present invention. The working principle of the positioning locking mechanism is similar to the positioning locking of the star-rotating rotating device of Fig. 8, and will not be described in detail here.

In a further embodiment of the invention, a second type of rotary valve mechanism is provided. This type of rotary valve mechanism may not have a projection, and the other is similar to the first type of rotary valve mechanism, and will not be described in detail. The following is a direct description of the star-rotating rotating device using the second type of 3-blade rotary valve mechanism.

Figure 12a is a schematic illustration of the externally driven rotary valve mechanism of the star-rotating rotating device in a first position in accordance with an embodiment of the present invention. When the rotary valve mechanism is in this position, the two variable volume annular piston spaces communicate with the outside through the two through holes. Figure 12b is a schematic view of the externally driven rotary valve mechanism of the star-rotating device in a second position in accordance with an embodiment of the present invention. As can be seen from Figures 12a and 12b, the rotary valve mechanism includes three rotary valve plates, and does not contact the roller planetary piston wheel during the switching of the rotary valve plate, but through an external independent drive mechanism. Drive yourself.

Figure 13 is a schematic view of a star-rotating rotating device for mechanically driving a rotary valve mechanism according to the present invention. As shown in FIG. 13, the star-rotating device further includes: an intermittent indexing wheel 310 located outside the annular piston space and locked with the rotary valve core shaft; an external mechanical drive positioning mechanism (not shown in the figure) Out), connected to the intermittent indexing wheel, used to drive the intermittent indexing wheel 310 to intermittent After the 360/N degree is indexed and positioned, the closed position of the rotary valve mechanism is automatically locked. Preferably, the indexing drive mechanism may be an indexing cam, a non-complete intermittent gear or a sheave mechanism commonly used in the prior art. Among them, the outer sheave mechanism is one of the most suitable mechanisms for indexing drive.

Figure 14 is a perspective view of a star-rotating rotating device using a 90 degree outer sheave indexing drive rotary valve mechanism in accordance with an embodiment of the present invention. The difference is that: the concave outer cylindrical surface 14-3 of the intermittent indexing wheel 310 is provided with eight rolling bearings 14-1 for reducing the following meshing friction of the cylindrical surface 14-2 of the central sheave locking. This is very necessary to ensure the high speed operation of the outer sheave.

Fig. 15 is a schematic view showing the working flow of a star-rotating rotating device using a 120-degree outer groove wheel indexing drive mechanism according to an embodiment of the present invention. As shown in Figure 15, the workflow of the rotary valve mechanism includes:

Step S1501: The indexing wheel C starts to approach the intermittent indexing wheel 310 driven by the peripheral mechanism, and the corresponding rotary valve piece is in a closed state, as shown in FIG. 15-1;

Step S1502: The indexing wheel C enters the indexing slot of the intermittent indexing wheel 310 driven by the peripheral mechanism, and the corresponding rotary valve piece is in a closed state, as shown in FIG. 15-2;

Step S1503: The indexing wheel C is located in the indexing groove of the intermittent indexing wheel 310, and continues to push it to rotate, and the corresponding rotary valve piece is in the open position, and the corresponding roller planetary piston wheel C starts to pass the rotary valve. The critical section of the slice, as shown in Figure 15-3;

Step S1504: The indexing wheel C is located in the middle of the indexing groove of the intermittent indexing wheel 310, and continues to push it to rotate, and the corresponding rotary valve piece is in the maximum opening and letting state, and the corresponding roller planetary piston wheel C passes through the rotary valve. The center line of the critical section of the slice, as shown in Figure 15-4;

Step S1505: The indexing wheel C is located at the indexing slot outlet of the intermittent indexing wheel 310 driven by the peripheral mechanism, and the corresponding rotary valve piece enters the closed state, and the corresponding roller planetary piston wheel C has passed the rotary valve piece Critical section, as shown in Figure 15-5;

As can be seen from Fig. 15-5, when the indexing wheel C is located at the indexing groove outlet of the intermittent indexing wheel 310 driven by the peripheral mechanism, the corresponding rotary valve piece enters the closed state, and the corresponding roller planetary piston wheel C When the critical section of the rotary valve plate has passed, the rotary valve core can be locked in the same manner, and this action is locked by the concave outer cylindrical surface 14-2 of the intermittent indexing wheel 310 and the central groove wheel with the cylindrical surface 14 -3 follow-up engagement is completed.

In order to better control the timing of the opening/closing switching of the rotary valve piece, in a preferred embodiment of the present invention, the external drive positioning mode of the rotary valve mechanism can also be electrically. In this case, the star-rotating device further includes: a position sensor for acquiring a valve that is about to pass through Position information of the planetary piston wheel in the critical section; an external electric drive positioning mechanism, located outside the annular piston space, for servo controlled by a closed loop circuit according to the position information of the planetary piston wheel that will pass through the critical section of the rotary valve The motor drives the rotary valve core to intermittent

The 360/N degree is indexed and moved, and then locked by the parking torque of the servo motor.

Fig. 16 is a block diagram showing the control of the rotary valve mechanism electrically driven by the star-rotating device according to the embodiment of the present invention, that is, the control block diagram of the AC servo motor for the high-speed intermittent indexing movement of the rotary valve plate. As shown in FIG. 16, the control process of the rotary valve mechanism of this embodiment includes the following steps:

In the first step, the position information of the planetary piston wheel adjacent to the rotary valve piece is obtained by the electronic sensor through a signal medium such as magnetic or iron fixed on the spindle flange, and the position information of the planetary piston wheel of the rotary valve piece can be installed on the Specific electronic sensor means on the flange on the spindle are expressed, as will be understood by those skilled in the art, and herein refers to a photoelectric or magnetoelectric electronic sensor means;

In the second step, the position information of the planetary piston wheel is amplified, sent to the controller, and the AC servo motor is started or stopped;

In the third step, the speed and position signal of the AC servo motor are detected by the encoder connected to the motor shaft and then fed back to the controller to correct the motion accuracy of the AC servo motor at any time;

In the fourth step, the pulse current for driving the AC servo motor is provided by the pulse generator.

The fluid motor, engine, compressor, and pump to which the present invention is applied will be briefly described below. Figure 17a is a schematic view showing the operation of a fluid motor to which the cross-rotating valve mechanism of the embodiment of the present invention is applied. As shown in Figure 17a, the through holes in the semi-cylindrical recess communicate with the fluid inlet and the fluid outlet, respectively. Among them, it should be specially stated that when the roller planetary piston wheel moves in the critical section of the cross-rotor mechanism, the cross-rotor mechanism has a problem of causing the fluid to enter and exit during the rotation and transposition process, in order to reduce fluid leakage, The inlet needs to be closed, one of the methods is: Move the position of the indexing pin 302 to close the inlet valve.

Fig. 17b is a schematic view showing the operation of the engine to which the cross rotary valve mechanism of the embodiment of the invention is applied. As shown in Fig. 17b, the through holes in the semi-cylindrical grooves are respectively connected to the combustion chamber and the exhaust gas discharge port. The six stations of the Star-Rot engine with a cross-rotor mechanism are:

1. Forming a stable closed air intake standby space station;

Second, high pressure fuel gas injection station;

Third, the spark plug ignition station; 4. The gas expansion after combustion is used as a work station;

5. Residual pressure exhaust gas detention operation station;

6. Residual residual gas discharge station.

It can be seen that the Star Spin engine has no suction and compression strokes. In the star-rotary engine, it is necessary to have a high-voltage electronically controlled injector and a high-voltage electronically controlled air nozzle to directly supply oil to the cylinder, thereby easily achieving an optimum air-fuel ratio of 14.7:1. Preferably, the timing of the intake ignition can be controlled by the position signal of the cross-rotor mechanism.

Figure 17c is a schematic view showing the operation of a compressor and a pump to which the cross-rotating valve mechanism of the embodiment of the present invention is applied. The direction of the arrow is the direction of rotation. As shown in Fig. 17c, the through holes in the semi-cylindrical grooves are in communication with the low pressure fluid suction port and the high pressure fluid outlet, respectively. It should be noted that in the present embodiment, in order to prevent backflow of the liquid, an outlet check valve may be provided at the outlet of the high pressure fluid.

In summary, the rotary valve mechanism of the present invention can balance the fluid pressure torque in the working flow, thereby avoiding the influence of the fluid back pressure, and the opening and closing of the rotary valve mechanism is easy; the roller planetary piston wheel can be easily Passing through the critical region; and the next closing action can be completed immediately while the rotary valve mechanism is open, thereby meeting the requirements of a higher speed switching frequency. It should be noted that the elements in the figures are not necessarily drawn to a strict scale for the purpose of simplicity and clarity of the elements in the drawings. In addition, the various features and advantages of the present invention are described above, but the detailed description of the structure and function of the invention is only for the purpose of the disclosure, and the various details are also Within the scope of the invention, the scope of the invention, and the arrangement of the components, and the like, are to be construed as being within the scope of the spirit of the invention as expressed in the appended claims.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

A rotary valve mechanism, comprising: a rotary valve body and a rotary valve core; wherein the rotary valve body comprises: a rotating portion located therebetween and a periphery thereof N rotary valve sheets, said N 2;

a center of the rotating portion has a positioning hole penetrating the rotating portion; the rotary valve core shaft is disposed in the positioning hole and locked with the rotary valve body;

The rotary valve piece includes an extension portion that extends in a radial direction of the rotating portion.

2. The rotary valve mechanism according to claim 1, wherein: the distal end of the extending portion is provided with a groove along a central axis of the rotary valve body, and the groove is filled with a wear-resistant sealing material.

3. The rotary valve mechanism according to claim 2, wherein:

The wear-resistant sealing material is in the shape of a roller or a roller matched with the groove; the wear-resistant sealing material is one of the following materials: wear-resistant rubber, engineering plastic, phosphor bronze, or wear-resistant lubricating alloy.

4. The rotary valve mechanism according to claim 1, wherein: the end faces of the rotary valve body are recessed into grooves in addition to the boundary portion thereof; and the groove is mounted in the groove to be matched with the groove. Grind the sealing member.

5. The rotary valve mechanism according to claim 4, wherein:

The groove is a flat plate-like structure, and a small hole is arranged at a bottom of the groove;

The wear-reducing sealing member abuts against the valve body by a compression spring mounted in the small hole.

6. The rotary valve mechanism according to claim 4, wherein:

The groove is cylindrical or partially cylindrical, and the wear-reducing sealing member is a rolling-element. The wear-reducing sealing member of the rolling-element structure is connected to the valve body through a rotating shaft at both ends thereof.

7. The rotary valve mechanism according to claim 1, wherein: said N rotary valve sheets are uniformly disposed along a tangential direction of said rotating portion, and said N is 3 or 4.

8. A star-rotating rotating device comprising a rotary valve mechanism according to any one of claims 1 to 7, wherein the star-rotating rotating device comprises: an annular piston space; the rotary valve piece extension The cross-sectional shape corresponds to the spatial cross-sectional shape of the annular piston;

The outer side surface of the annular piston space is provided with a semi-cylindrical groove, the semi-cylindrical groove is provided with two sets of outer through holes communicating with the outside, and the two sets of outer through holes are respectively disposed in the semi-cylindrical shape Both sides of the central axis of the groove;

The rotary valve mechanism is disposed in the semi-cylindrical groove; after the rotary valve plate mandrel is locked with the rotary valve plate body, the semi-cylinder is passed along the central axis of the semi-cylindrical groove Both ends of the groove;

The rotary valve mechanism is switched between an open position and a closed position; in a closed position of the rotary valve mechanism, a distal end of the extended portion is in contact with an inner side surface of the annular piston space, and the annular piston space is partitioned into Two variable volume piston spaces, the two sets of outer through holes being in communication with the two variable volume piston spaces, respectively.

9. The rotary valve mechanism according to claim 8, wherein: said rotary valve plate further comprises a projection when said rotary valve mechanism is urged by a roller planetary piston wheel to be switched between an open position and a closed position. Ministry

The protrusion is located at a distal end of the extension portion and extends tangentially along the extension portion; the two sets of outer through holes respectively pass through a gap between the protrusions on the two rotary valve sheets Communicating with the two variable volume piston spaces;

a roller planetary piston wheel pushes a projection of the rotary valve mechanism during the rolling of the annular piston space to rotate the rotary valve mechanism to an open position; after the roller planetary piston wheel passes, the rotation The valve mechanism enters the next closed position.

10. The rotary valve mechanism according to claim 9, wherein:

The rotary valve piece has one of the protrusions, and a set of inner through holes are arranged in the middle of the protrusion;

The two sets of outer through holes are respectively in communication with the two volume variable piston spaces through the set of inner through holes on the two rotary valve sheets, the set of inner through holes including one, two or 3 inner through holes.

11. The rotary valve mechanism of claim 9 wherein:

The rotary valve piece has two protrusions, and the two protrusions are respectively located along the Both ends of the central axis of the rotary valve body;

The two sets of outer through holes are respectively in communication with the two variable volume piston spaces by a gap between the two projections on the two rotary valve sheets.

12. The star-rotating device according to claim 9, wherein the star-rotating device comprises: a position locking mechanism;

The position locking mechanism is located outside the annular piston space for locking the closed position of the rotary valve mechanism such that the rotation of the rotary valve mechanism is intermittent 360/N degree indexing rotation.

13. The star-rotating device according to claim 12, wherein the position locking mechanism comprises:

An intermittent indexing wheel is located outside the annular piston space, and is locked with the rotary valve plate core shaft, and N indexing grooves are uniformly disposed on an outer side thereof, and the position of the indexing groove corresponds to the rotary valve mechanism Closed position

Indexing the positioning pin along the radial direction of the intermittent indexing wheel, the top end of which meshes with the indexing groove of the intermittent indexing wheel;

And a compression spring disposed along a radial direction of the intermittent indexing wheel, one end of which is fixed to the stator of the planetary rotating device, and the other end of which abuts the tail end of the indexing positioning pin.

14. The star-rotating device according to claim 12, wherein the position locking mechanism comprises:

An intermittent indexing wheel is located outside the annular piston space, and is locked with the rotary valve plate core shaft, and N indexing grooves are evenly disposed on an outer side thereof, and the position of the indexing groove corresponds to the rotary valve mechanism Closed position

An indexing cam groove plate disposed on a side of the star-rotating device;

a pressure wheel, the pressure wheel is divided into two parts that are axially connected: a roller portion and a connecting portion, the roller portion is rolled in the indexing cam groove, the connecting portion and a tail end of the indexing pin Connected.

The star-rotating device according to claim 12, wherein the position locking mechanism comprises: An intermittent indexing wheel is located outside the annular piston space and is locked with the rotary valve core shaft;

N positive indexing magnets are evenly disposed outside the intermittent indexing wheel;

A negative indexing magnet is fixed to the star-rotating rotating device, and a position at which the positive indexing magnet and the negative indexing magnet generate a strong suction force corresponds to the rotary valve mechanism being in a closed position.

16. The star-rotating device according to claim 8, wherein when the swirl valve mechanism is driven by an external driving device to switch between an open position and a closed position, the star-rotating device further includes :

An intermittent indexing wheel is located outside the annular piston space, and is locked with a portion of the rotary valve plate mandrel located outside the annular piston space,

a mechanically driven indexing positioning mechanism coupled to the intermittent indexing wheel for locking the rotary valve mechanism after driving the intermittent indexing wheel to perform an indexing positioning motion at an intermittent 360/N degree Closed position.

The star-rotating rotating device according to claim 16, wherein the mechanically driven indexing positioning mechanism is an indexing cam, an incomplete intermittent gear, or a sheave mechanism.

The star-rotating rotating device according to claim 17, wherein the mechanically driven indexing and positioning mechanism is an outer sheave mechanism;

A rolling bearing for reducing friction is provided on the concave outer circumference of the slotted intermittent indexing wheel of the outer sheave mechanism.

19. The star-rotating device according to claim 8, wherein when the swirl valve mechanism is driven by an external driving device to switch between an open position and a closed position, the star-rotating device further includes :

a position sensor for acquiring position information of the planetary piston wheel that is about to pass through the critical section of the rotary valve;

An external electric drive positioning mechanism is located outside the annular piston space and is connected to the position sensor for driving by a servo motor according to the position information of the planetary piston wheel that is about to pass through the critical section of the rotary valve plate The rotary valve mandrel is indexed and positioned in an intermittent 360/N degree and then locked by the parking torque of the servo motor.

20. A star-rotating device according to any one of claims 8 to 19, The star-rotating device further comprises: a cylinder of a cylindrical cavity and a main shaft supported by the cylinder sealing end caps on both sides of the cylinder, the central sun wheel being sleeved on the main shaft; the outer cylindrical surface of the central sun wheel and The inner cylindrical surface of the cylinder constitutes the annular piston space, and the roller planetary piston wheel is placed in the annular piston space in a rolling manner.