Accurate liquid spraying star wheel of static mandrel

Abstract

The precise liquid spraying star wheel comprises a star wheel piece, a star wheel mandrel and a bearing, the star wheel piece is fixedly arranged on the outer side of the bearing in the circumferential direction, the star wheel mandrel is sleeved with the bearing, the star wheel mandrel is fixedly arranged, a hole is formed in the star wheel mandrel, lubricating liquid is arranged in the hole, the star wheel mandrel is provided with a liquid outlet, and the liquid outlet is communicated with the liquid outlet. The lubricating liquid is discharged to the bearing through the liquid outlet, the bearing is provided with a liquid discharging hole, and the lubricating liquid is discharged into a groove channel arranged in the star wheel piece through the liquid discharging hole of the bearing and is discharged through the liquid outlet in the star wheel teeth in the circumferential direction of the star wheel piece. The star wheel is accurate in liquid spraying and good in lubricating effect, the abrasion of the star wheel is reduced, and the liquid spraying amount of the system is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of single-screw compressors, and in particular to a precision liquid injection star wheel with a stationary spindle. Background Art

[0002] The screw and the star wheel of a single-screw compressor mesh with each other, and the star wheel is driven by the screw, and the star wheel moves with the screw to compress the gas. Since the compressor has high requirements for sealing, and the relative movement between the screw and the star wheel will cause wear, over time, the seal between the screw and the star wheel will gradually become loose, resulting in gas leakage, affecting the compression ratio and reducing efficiency. Although the prior art can spray lubricating liquid on the star wheel teeth, which has a certain lubricating effect, the lubricating effect is greatly reduced due to the uneven spraying, and the existing spraying method consumes a large amount of lubricating liquid and is costly. Summary of the invention

[0003] The present invention aims to provide a precise liquid-spraying star wheel with a stationary spindle to solve the deficiencies in the prior art. The technical problem to be solved by the present invention is achieved through the following technical solutions.

[0004] A precision liquid-spraying star wheel with a stationary spindle comprises a star wheel piece, a star wheel spindle and a bearing, wherein the star wheel piece is fixedly arranged on the circumferential outer side of the bearing, the bearing is sleeved on the star wheel spindle, the star wheel spindle is fixedly arranged and has a hole inside, a lubricating liquid is arranged inside the hole, the star wheel spindle is provided with a liquid outlet, the lubricating liquid is discharged to the bearing via the liquid outlet, the bearing is provided with a liquid drainage hole, the lubricating liquid is discharged into a groove arranged inside the star wheel piece through the liquid drainage hole of the bearing, and is discharged through the liquid outlet on the star wheel teeth circumferentially of the star wheel piece.

[0005] Preferably, the liquid outlet of the star wheel shaft is divided into a radial liquid outlet and an axial liquid outlet, the bearing includes a bearing radial pad and a bearing axial pad, the radial liquid outlet corresponds to the position of the bearing radial pad, and the axial liquid outlet corresponds to the position of the bearing axial pad, and the lubricating fluid is discharged from the radial liquid outlet to the load-bearing area of ​​the bearing radial pad, and is discharged from the axial liquid outlet to the load-bearing area of ​​the bearing axial pad.

[0006] Preferably, the liquid outlet of the groove is located on both sides of the star gear teeth.

[0007] Preferably, the bearing is a rolling bearing or a sliding bearing.

[0008] Preferably, a liquid film with a certain stiffness and damping is filled between the bearing radial pad and the star wheel spindle to achieve radial limiting of the star wheel.

[0009] Preferably, a thrust plate is provided below the star wheel spindle, a liquid outlet is provided on the thrust plate, and a liquid film with a certain stiffness and damping is filled between the thrust plate and the bearing axial bushing to achieve axial limiting of the star wheel.

[0010] Preferably, the star wheel plate is composed of a star wheel plate upper layer and a star wheel plate lower layer, the star wheel plate upper layer and the star wheel plate lower layer are respectively provided with grooves, and the upper layer and the lower layer are fixedly connected by welding.

[0011] The precise liquid-spraying star wheel with a stationary spindle of the present invention reduces the number of bearings from the traditional two to one, shortens the length of the shaft, and improves the running stability. In addition, the lubricating liquid is introduced from the star wheel spindle, enters the bearing bearing area through the channel inside the star wheel spindle, and then enters the internal groove of the star wheel through the bearing drainage hole, and finally sprays into the meshing area of ​​the star wheel and the screw from the liquid outlet on the star wheel for lubrication. Compared with the traditional method, the liquid spraying is more precise, the lubrication effect is improved, the wear of the star wheel is reduced, and the amount of liquid sprayed by the system is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the meshing of the screw and the star wheel of the present invention; Figure 2 This is a schematic diagram of the star wheel assembly structure of the present invention; Figure 3 is a perspective view of the star wheel of the present invention; Figure 4 For the present invention Figure 3 A partial enlarged view of Figure 5 This is a schematic diagram of the upper layer of the star wheel of the present invention; Figure 6 This is a schematic diagram of the lower layer of the star wheel of the present invention; Figure 7 It is a cross-sectional view of the star wheel and the bearing of the present invention; Figure 8 A perspective view of the star wheel spindle of the present invention; Fig. 9 It is a schematic diagram of the bearing of the present invention.

[0013] Explanation of the accompanying reference numerals: 1-star wheel, 101-upper layer of star wheel, 102-lower layer of star wheel, 103-groove, 104-liquid outlet of star wheel; 2-star wheel spindle, 201-thrust plate, 202-radial liquid outlet, 203-axial liquid outlet; 3-bearing, 301-bearing radial bearing, 302-bearing axial bearing, 303-bearing drainage hole. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1 As shown, the overall diagram of the present application is shown, using a single screw to replace the common twin screws in the prior art. Such a setting can shorten the length of the shaft and improve the running stability.

[0022] like Figure 2-9As shown, the star wheel of the present application includes a star wheel piece 1, a star wheel shaft 2 and a bearing 3, the star wheel piece 1 is fixedly arranged on the circumferential outer side of the bearing 3, the bearing 3 is sleeved on the star wheel shaft 2, the star wheel shaft 2 is fixedly arranged and has a hole inside, the inside of the hole is filled with lubricating liquid, the liquid outlet of the star wheel shaft 2 is divided into a radial liquid outlet 202 and an axial liquid outlet 203, the bearing includes a bearing radial bushing 301 and a bearing axial bushing 302, the radial liquid outlet 202 corresponds to the position of the bearing radial bushing 301, and the axial liquid outlet 203 corresponds to the position of the bearing axial bushing 302. With such an arrangement, the lubricating liquid can be discharged from the radial liquid outlet 202 to the bearing radial bushing 301 of the bearing, and discharged from the axial liquid outlet 203 to the bearing axial bushing 302 of the bearing. The bearing drainage hole 303 of the bearing 3 is in communication with the internal groove 103 of the star wheel piece 1, and the liquid outlets of the internal groove 103 of the star wheel piece 1 are located on both sides of the teeth of the star wheel piece 1. The lubricating liquid discharged from the bearing drainage hole 303 enters the internal groove 103 of the star wheel piece 1, and then is sprayed into the meshing area through the star wheel piece outlets 104 on both sides of the star wheel teeth of the star wheel piece 1 for precise lubrication.

[0023] Furthermore, the bearing is a rolling bearing or a sliding bearing.

[0024] Furthermore, a liquid film with a certain stiffness and damping is filled between the bearing radial bush and the star wheel spindle to achieve radial limiting of the star wheel.

[0025] Furthermore, a thrust plate 201 is provided below the star wheel spindle 2, and a liquid film with a certain stiffness and damping is filled between the thrust plate 201 and the bearing axial bush 302 to achieve axial position limiting of the star wheel. In addition, a liquid outlet is provided on the thrust plate 302.

[0026] Furthermore, during processing, the groove 103 inside the star wheel piece 1 is complex and cannot be processed as a whole. During processing, the star wheel piece needs to be divided into a star wheel piece upper layer 101 and a star wheel piece lower layer 102, and the grooves need to be processed separately. After the grooves are processed, the upper and lower pieces are combined into one by vacuum diffusion welding, and then the side of the star wheel is processed.

[0027] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0030] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0031] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0032] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0033] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A precision liquid-spraying star wheel with a stationary spindle, characterized in that: It includes a star wheel piece, a star wheel spindle and a bearing, wherein the star wheel piece is fixedly arranged on the circumferential outer side of the bearing, the bearing is sleeved on the star wheel spindle, the star wheel spindle is fixedly arranged and has a hole inside, a lubricating liquid is arranged inside the hole, the star wheel spindle is provided with a liquid outlet, the lubricating liquid is discharged to the bearing through the liquid outlet, the bearing is provided with a drainage hole, the lubricating liquid is discharged into the groove arranged inside the star wheel piece through the drainage hole of the bearing, and is discharged through the liquid outlet on the star wheel teeth circumferentially of the star wheel piece.

2. The precision liquid-injection star wheel with a stationary spindle according to claim 1, characterized in that: The liquid outlet of the star wheel shaft is divided into a radial liquid outlet and an axial liquid outlet. The bearing includes a bearing radial pad and a bearing axial pad. The radial liquid outlet corresponds to the position of the bearing radial pad, and the axial liquid outlet corresponds to the position of the bearing axial pad. The lubricating fluid is discharged from the radial liquid outlet to the load-bearing area of ​​the bearing radial pad, and is discharged from the axial liquid outlet to the load-bearing area of ​​the bearing axial pad.

3. The stationary spindle precision liquid jet star wheel according to claim 1, characterized in that: The liquid outlets of the grooves are located on both sides of the star gear teeth.

4. The stationary spindle precision liquid jet star wheel according to claim 1, characterized in that: The bearing is a rolling bearing or a sliding bearing.

5. The stationary spindle precision liquid jet star wheel according to claim 2, characterized in that: The space between the radial bearing pad and the star wheel shaft is filled with a liquid film with certain stiffness and damping.

6. The stationary spindle precision liquid jet star wheel according to claim 2, characterized in that: A thrust plate is arranged below the star wheel spindle, a liquid outlet is arranged on the thrust plate, and a liquid film with certain stiffness and damping is filled between the thrust plate and the bearing axial bush.

7. The stationary spindle precision liquid jet star wheel according to claim 1, characterized in that: The star wheel piece is composed of a star wheel piece upper layer and a star wheel piece lower layer. The star wheel piece upper layer and the star wheel piece lower layer are respectively provided with grooves, and the upper layer and the lower layer are fixedly connected by welding.

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