Screw air compressor

Abstract

The utility model discloses a screw air compressor, which belongs to the technical field of screw air compressors and comprises a casing, a compression space is arranged in the casing, an adjusting channel communicated with the compression space is further arranged in the casing, the adjusting channel is arranged on the periphery of the compression space in a surrounding manner, and an adjusting hole communicated with the adjusting channel is arranged in the casing. The screw compression part is rotatably arranged in the compression space; the adjusting part is movably arranged in the adjusting channel, and the adjusting part controls the opening degree of the adjusting hole by controlling the movement amount of the adjusting part. According to the screw air compressor designed by the utility model, the air compression amount of the screw air compressor can be accurately controlled, the best working load is matched according to a real-time working scene, unnecessary energy waste is avoided, and the energy efficiency ratio is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw air compressors, and particularly relates to a screw air compressor. Background Art

[0002] In related technologies, a screw air compressor is a common industrial compressed air device. A pair of mutually meshing spiral rotors of the screw air compressor rotate to compress air. In the prior art, the screw air compressor has adjustment holes in the axial direction, so that the screw air compressor has only several fixed adjustment gears such as 50%, 75% and 100%, resulting in that the screw air compressor cannot be adjusted to the optimal working load according to the working scenario in real time, thus resulting in relatively high energy consumption of the traditional screw air compressor. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a screw air compressor. The screw air compressor designed according to the utility model can accurately control the air compression amount of the screw air compressor, realizes matching the optimal working load according to the real-time working scenario, avoids unnecessary energy waste, and improves the energy efficiency ratio.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] The utility model provides a screw air compressor, comprising: a housing, a compression space is arranged in the housing, an adjustment channel communicated with the compression space is further arranged in the housing, the adjustment channel is arranged around the outer periphery of the compression space, and an adjustment hole communicated with the adjustment channel is arranged in the housing; a screw compression member, the screw compression member is rotatably arranged in the compression space; an adjustment member, the adjustment member is movably arranged in the adjustment channel, and the adjustment member controls the opening degree of the adjustment hole by controlling its own moving amount.

[0006] According to the screw air compressor of the utility model, its adjustment channel is arranged around the outer periphery of the compression space, and the adjustment member can selectively move in the adjustment channel to control the opening degree of the adjustment hole, realizing accurate control of the air compression amount of the screw air compressor, thereby realizing matching the optimal working load according to the real-time working scenario, avoiding unnecessary energy waste, improving the energy efficiency ratio, and keeping the system pressure stable, realizing constant output even when the demand fluctuates. At the same time, it can reduce the unnecessary full-load operation time and extend the service life of the screw air compressor.

[0007] Further, the adjustment channel is configured as a spiral shape surrounding the outer periphery of the compression space, and one end of the adjustment channel is provided with a first communication hole communicating with the compression space; wherein the extending direction of the adjustment member is parallel to the extending direction of the adjustment channel, and the extending direction of the adjustment hole is parallel to the extending direction of the adjustment channel.

[0008] Further, the length dimension of the adjustment channel is L1, and the length dimension of the adjustment hole is L2, satisfying: L1 / 5 ≤ L2 ≤ L1 / 4.

[0009] Further, the other end of the adjustment channel is provided with a second communication hole, at least a part of the adjustment member passes through the second communication hole and extends outside the adjustment channel, and the screw air compressor further includes: a driving device, the driving device is adapted to drive the adjustment member to rotate, so as to drive the adjustment member to move towards or away from the first communication hole.

[0010] Further, the driving device includes: a driving motor, the driving motor has a movable output end; a rotating disc, the rotating disc is rotatably arranged on the output end, and the rotating disc is connected with the adjustment member.

[0011] Further, a ball groove is arranged on one side of the rotating disc facing the adjustment member, a ball head is arranged on the adjustment member, and the ball head is rotatably received in the ball groove.

[0012] Further, it further includes: a mounting shell, the mounting shell is connected with the machine shell, an installation cavity is arranged in the mounting shell, and the driving device is arranged in the installation cavity.

[0013] Further, a plug-in piece is arranged on one side of the mounting shell facing the machine shell, and a plug-in groove adapted to receive the plug-in piece is arranged on one side of the machine shell facing the mounting shell.

[0014] Further, the plug-in piece includes: a sealing part, the sealing part is connected with the mounting shell; a connecting part, the connecting part is arranged at the free end of the sealing part, and the connecting part is connected with the machine shell through a fastener; wherein the screw air compressor further includes: a flexible sealing member, and the flexible sealing member is arranged between the sealing part and the plug-in groove.

[0015] Other advantages, objectives and features of the present utility model will be described in the subsequent description, and to some extent will be obvious to those skilled in the art, or those skilled in the art can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following description. Description of the Drawings

[0016] To make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the present utility model provides the following attached drawings for illustration:

[0017] Figure 1 It is a cross-sectional view of the casing and the screw compressor of the present utility model;

[0018] Figure 2 It is a schematic diagram of the cooperation between the adjusting member and the driving device of the present utility model;

[0019] Figure 3 It is a cross-sectional view of the casing and the mounting shell of the present utility model.

[0020] The markings in the attached drawings are as follows:

[0021] 10. Casing; 11. Compression space; 12. Adjusting channel; 13. Adjusting hole;

[0022] 20. Screw compressor; 30. Adjusting member;

[0023] 41. Driving motor; 42. Rotating disk;

[0024] 50. Mounting shell; 51. Mounting cavity; 52. Insertion piece;

[0025] 60. Fastener; 70. Flexible seal. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with embodiments and attached drawings. The illustrative implementation manners and descriptions of the present utility model are only used to explain the present utility model and do not serve as a limitation to the present utility model.

[0027] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: it is not necessary to adopt these specific details to implement the present utility model. In other instances, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present utility model.

[0028] Throughout the specification, references to "one embodiment", "an embodiment", "an example" or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present utility model. Thus, the phrases "one embodiment", "an embodiment", "an example" or "an example" that appear throughout the specification do not necessarily all refer to the same embodiment or example. In addition, the specific features, structures, or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model.

[0030] Embodiment 1:

[0031] As Figures 1 - 3 shown, the present utility model provides a screw air compressor, including: a housing 10, a screw compression member 20, and an adjusting member 30. A compression space 11 is provided inside the housing 10. An adjusting channel 12 communicating with the compression space 11 is further provided inside the housing 10. The adjusting channel 12 is disposed around the outer periphery of the compression space 11. An adjusting hole 13 communicating with the adjusting channel 12 is provided inside the housing 10. The screw compression member 20 is rotatably disposed inside the compression space 11. The adjusting member 30 is movably disposed inside the adjusting channel 12. The adjusting member 30 controls the opening degree of the adjusting hole 13 by controlling its own moving amount.

[0032] In some embodiments, the compression space 11 inside the housing 10 is configured as the core working area of the screw air compressor. A screw compression member 20 is rotatably disposed inside the compression space 11. The screw compression member 20 compresses the inhaled air to a high-pressure state by rotation. The adjusting channel 12 is disposed around the compression space 11. The adjusting channel 12 is adapted to provide a path for the adjusting member 30 to achieve dynamic control of the compression process. The adjusting hole 13 communicates with the adjusting channel 12, and the movement of the adjusting member 30 can change the opening degree of the adjusting hole 13, thereby affecting the flow rate and pressure of the compressed air, and further controlling the output characteristics of the compressed air.

[0033] It should be noted that the screw compression member 20 is usually composed of a pair of meshing screws, and their rotation captures air and compresses it. The regulating member 30 can be a sliding valve, and the regulating member 30 moves along the extending path of the regulating channel 12. When the air compressor needs to adjust the output, a driving device (such as an electric motor or a cylinder) pushes the regulating member 30 to move along the regulating channel 12, thereby changing the opening degree of the regulating hole 13.

[0034] It can be understood that the basic working principle of the screw air compressor is to use the rotation of the screw air compressor to compress air. During operation, by controlling the movement of the regulating member 30, the amount of air discharged from the compression space 11 can be dynamically adjusted. When the output of compressed air needs to be increased or decreased, the regulating member 30 moves to change the size of the regulating hole 13, so that the flow rate and pressure of the compressed air can be controlled without changing the screw rotation speed.

[0035] It is worth mentioning that in this application, by moving the regulating member 30 within the regulating channel 12, the opening degree of the regulating hole 13 can be accurately controlled, and then the amount of air compressed by the screw air compressor can be adjusted. Compared with traditional screw air compressors (traditional screw air compressors only have several fixed adjustment gears such as 50%, 75%, and 100%, resulting in the traditional screw air compressor being unable to adjust to the optimal working load in real time according to the working scenario, thus resulting in relatively high energy consumption of the traditional screw air compressor), the screw air compressor of this application can match the best working load according to the real-time working scenario by accurately controlling the flow rate and pressure of the compressed air, avoiding unnecessary energy waste and improving the energy efficiency ratio; moreover, the dynamic adjustment mechanism can maintain the stability of the system pressure and keep a constant output even when the demand fluctuates; at the same time, through the above settings, the unnecessary full-load operation time can be reduced, and the service life of the screw air compressor can be extended.

[0036] For the screw air compressor according to the present utility model, the regulating channel 12 is disposed around the outer periphery of the compression space 11, and the regulating member 30 can selectively move within the regulating channel 12 to control the opening degree of the regulating hole 13, achieving accurate control of the amount of air compressed by the screw air compressor, thereby matching the best working load according to the real-time working scenario, avoiding unnecessary energy waste, improving the energy efficiency ratio, and maintaining the stability of the system pressure, realizing a constant output even when the demand fluctuates, and at the same time reducing the unnecessary full-load operation time and extending the service life of the screw air compressor.

[0037] Embodiment 2:

[0038] Based on the first embodiment, the adjustment channel 12 is configured as a spiral shape surrounding the outer periphery of the compression space 11. One end of the adjustment channel 12 is provided with a first communication hole communicating with the compression space 11. The extending direction of the adjusting member 30 is parallel to the extending direction of the adjustment channel 12, and the extending direction of the adjustment hole 13 is parallel to the extending direction of the adjustment channel 12.

[0039] In some embodiments, the adjustment channel 12 is configured as a spiral shape surrounding the outer periphery of the compression space 11. This design enables the adjusting member 30 to move on a continuous path, improving the smoothness and efficiency of adjusting the adjustment hole 13. The spiral channel can also provide sufficient length for fine adjustment (the position change of the adjusting member 30 in the channel can be more subtle), achieving more precise control of the opening degree of the adjustment hole 13. The extending directions of the adjusting member 30, the adjustment hole 13, and the adjustment channel 12 are all parallel. Thus, when the adjusting member 30 moves, the axial direction of the adjusting member 30 is consistent with the spiral axis of the adjustment channel 12, and at the same time, the axial direction of the adjusting member 30 is also consistent with the axial direction of the adjustment hole 13, ensuring that the adjusting member 30 does not encounter additional resistance during movement, thereby achieving smoother and more accurate control of the opening degree of the adjustment hole 13.

[0040] It can be understood that since the movement of the adjusting member 30 is directly related to the opening degree of the adjustment hole 13, precise control of the compressed air flow rate can be achieved. Moreover, the consistency of the extending directions reduces the friction of the adjusting member 30 during movement, improving the overall efficiency of the system. At the same time, the design of the spiral adjustment channel 12 can make the entire system more compact, reducing the volume of the screw air compressor.

[0041] According to some embodiments of the present invention, the length dimension of the adjustment channel 12 is L1, and the length dimension of the adjustment hole 13 is L2, satisfying: L1 / 5 ≤ L2 ≤ L1 / 4.

[0042] It can be understood that setting the proportional limit of L1 / 5 ≤ L2 ≤ L1 / 4 is to ensure that the length of the adjustment hole 13 is large enough to effectively respond to the movement of the adjusting member 30, while not being too large to affect the compression efficiency. When L2 < L1 / 5, the adjustment hole 13 cannot fully respond to the small movement of the adjusting member 30, resulting in a decrease in the control accuracy of the adjustment hole 13. If L2 > L1 / 4, the hydrodynamic characteristics of the compression space 11 will be affected, leading to a decrease in the compression efficiency.

[0043] Thus, through the above settings, it can be ensured that even with a small movement of the adjusting member 30, fine control of the compressed air flow rate and pressure can be achieved. At the same time, an appropriate length of the adjustment hole 13 helps to maintain the aerodynamic balance in the compression space 11, avoiding excessive disturbance, thereby maintaining the high efficiency and smoothness of the compression process.

[0044] Embodiment 3:

[0045] On the basis of Embodiment 2, a second communication hole is provided at the other end of the adjustment channel 12, at least a part of the adjusting member 30 passes through the second communication hole and extends outside the adjustment channel 12. The screw air compressor further includes: a driving device adapted to drive the adjusting member 30 to rotate, so as to drive the adjusting member 30 to move towards or away from the first communication hole.

[0046] In some embodiments, the function of the driving device is to drive the adjusting member 30 to rotate, so that the adjusting member 30 moves towards or away from the first communication hole in the adjustment channel 12. Thus, the position of the adjusting member 30 can be precisely adjusted by the control of the driving device, so as to change the opening degree of the adjustment hole 13, and further control the effective working length of the screw compression member 20.

[0047] It can be understood that by controlling the movement of the adjusting member 30 through an external driving device, real-time and dynamic adjustment of the compressed air flow rate can be achieved. At the same time, the moving distance and speed of the adjusting member 30 can be directly controlled by the driving device, making the adjustment accuracy of the adjustment hole 13 higher, which helps to maintain stable compressed air pressure and flow rate. It is worth noting that the addition of the driving device makes the whole system more perfect, facilitating integration with an automatic control system, so as to realize remote monitoring and operation, and improving the operation convenience of the screw air compressor.

[0048] According to some embodiments of the present invention, the driving device includes: a driving motor 41 and a rotating disk 42. The driving motor 41 has a movable output end, the rotating disk 42 is rotatably arranged on the output end, and the rotating disk 42 is connected to the adjusting member 30.

[0049] It can be understood that during operation, the output end of the driving motor 41 moves and drives the rotating disk 42 to move. The rotating disk 42 moves to drive the adjusting member 30 to move in the adjustment channel 12. When the adjusting member 30 moves in the adjustment channel 12, it will rotate relative to the compression space 11. At this time, the rotating disk 42 rotates together with the adjusting member 30. Thus, the precise control ability of the driving motor 41 enables the flow rate and pressure of the compressed air to be adjusted with high precision, so as to match the working load of the screw air compressor according to the real-time working conditions.

[0050] According to some embodiments of the present utility model, a ball groove is provided on one side of the rotating disk 42 facing the adjusting member 30, and the adjusting member 30 is provided with a ball head, which is rotatably received in the ball groove. It can be understood that when the driving motor 41 drives the adjusting member 30 through the rotating disk 42, the degree of freedom of the ball head in the ball groove allows the adjusting member 30 to adapt to any minute angular changes while moving along the adjusting channel 12. Thus, even in a complex mechanical environment, the adjusting member 30 can move smoothly, thereby ensuring effective control of the opening degree of the adjusting hole 13. It is worth noting that the ball head being rotatably received in the ball groove also has a certain shock-absorbing effect, which can absorb the vibration generated during the operation of the screw air compressor and reduce the impact on the connection between the adjusting member 30 and the rotating disk 42, thereby improving the stability and service life of the entire system.

[0051] Preferably, the air outlet of the screw air compressor is communicated with the pressure vessel. The screw air compressor further includes a pressure sensor, which is disposed in the pressure vessel and communicatively connected to the driving motor 41. The pressure sensor can detect the pressure in the pressure vessel and control the operation of the driving motor 41 according to the pressure in the pressure vessel.

[0052] Embodiment Four:

[0053] Based on Embodiment Three, this embodiment of the screw air compressor further includes: a mounting shell 50, which is connected to the housing 10. An installation cavity 51 is provided inside the mounting shell 50, and the driving device is disposed in the installation cavity 51.

[0054] In some embodiments, the mounting shell 50 is configured as an independent structure. The mounting shell 50 is connected to the housing 10 and internally provided with an installation cavity 51 for installing and fixing the driving device. It can be understood that the presence of the mounting shell 50 realizes the modularization of the driving device, so that the driving device can be installed, maintained, or upgraded as an independent unit without large-scale disassembly of the entire air compressor, simplifying the maintenance process. At the same time, the mounting shell 50 not only provides physical protection to prevent damage to the driving device caused by the external environment, but also can isolate the noise and vibration generated during the operation of the driving device, improving the stability and service life of the entire system.

[0055] Of course, the independent mounting shell 50 can be designed with a ventilation or cooling system as needed to help the driving device maintain a normal temperature in a high-load working environment and avoid overheating of the driving device.

[0056] According to some embodiments of the utility model, a plug-in piece 52 is provided on one side of the mounting shell 50 facing the housing 10, and a plug-in slot suitable for receiving the plug-in piece 52 is provided on one side of the housing 10 facing the mounting shell 50. It can be understood that the design of the plug-in piece 52 and the plug-in slot allows a quick and simple connection between the mounting shell 50 and the housing 10, and the installation can be completed by simply aligning the plug-in piece 52 with the plug-in slot and pushing it in, which greatly saves assembly time; similarly, the disassembly process is also very simple, and the mounting shell 50 and the housing 10 can be easily separated by simply pulling out the plug-in piece 52 from the plug-in slot, which is convenient for maintenance and replacement of components.

[0057] According to some embodiments of the utility model, the plug-in piece 52 includes: a sealing part and a connecting part, the sealing part is connected to the mounting shell 50, the connecting part is arranged at the free end of the sealing part, and the connecting part is connected to the casing 10 through a fastener 60; wherein the screw air compressor also includes: a flexible seal 70, the flexible seal 70 is arranged between the sealing part and the plug-in slot.

[0058] It is understandable that the sealing part is constructed as a part of the plug-in sheet 52, the sealing part is connected to the mounting shell 50, and the sealing part is designed with a sealing function to ensure that a sealing interface is formed when in contact with the housing 10, and the connecting part is located at the free end of the sealing part, and the connecting part is used to connect with the housing 10 through fasteners 60 (such as bolts, screws, etc.) to provide mechanical fixation. It is worth noting that the flexible seal 70 is arranged between the sealing part and the plug-in slot of the housing 10. The main function of the flexible seal 70 is to fill the small gap between the sealing part and the plug-in slot. The flexible seal 70 is used to prevent air, moisture or other impurities from entering the interior of the air compressor to ensure the stability and efficiency of the system operation.

[0059] It is worth mentioning that the flexible sealing member 70 is usually made of a material with a certain elasticity, and can adapt to slight misalignment or deformation between the plug-in piece 52 and the plug-in groove, thereby providing a better sealing effect.

[0060] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A screw air compressor, characterized in that: include: A casing (10), wherein a compression space (11) is provided in the casing (10), an adjustment channel (12) communicating with the compression space (11) is further provided in the casing (10), the adjustment channel (12) is arranged around the outer periphery of the compression space (11), and an adjustment hole (13) communicating with the adjustment channel (12) is provided in the casing (10); A screw compression member (20), wherein the screw compression member (20) is rotatably disposed in the compression space (11); An adjusting member (30) is movably disposed in the adjusting channel (12), and the adjusting member (30) controls the opening of the adjusting hole (13) by controlling its own movement amount.

2. The screw air compressor according to claim 1, characterized in that: The regulating channel (12) is constructed in a spiral shape surrounding the outer circumference of the compression space (11), and one end of the regulating channel (12) is provided with a first communication hole communicating with the compression space (11); wherein The extending direction of the adjusting member (30) is parallel to the extending direction of the adjusting channel (12), and the extending direction of the adjusting hole (13) is parallel to the extending direction of the adjusting channel (12).

3. The screw air compressor according to claim 2, characterized in that: The length dimension of the regulating channel (12) is L1, and the length dimension of the regulating hole (13) is L2, satisfying: L1 / 5≤L2≤L1 / 4.

4. The screw air compressor according to claim 3, characterized in that: The other end of the regulating channel (12) is provided with a second connecting hole, and at least a portion of the regulating member (30) passes through the second connecting hole and extends outside the regulating channel (12). The screw air compressor further comprises: A driving device, wherein the driving device is suitable for driving the adjusting member (30) to rotate, thereby driving the adjusting member (30) to move toward or away from the first communicating hole.

5. The screw air compressor according to claim 4, characterized in that: The driving device comprises: A drive motor (41), wherein the drive motor (41) has a movable output end; A rotating disk (42), the rotating disk (42) is rotatably disposed at the output end, and the rotating disk (42) is connected to the adjusting member (30).

6. The screw air compressor according to claim 5, characterized in that: A ball groove is provided on one side of the rotating disk (42) facing the adjusting member (30), and the adjusting member (30) is provided with a ball head, which is rotatably received in the ball groove.

7. The screw air compressor according to claim 4, characterized in that: Also includes: A mounting shell (50) is connected to the housing (10), a mounting cavity (51) is provided in the mounting shell (50), and the driving device is arranged in the mounting cavity (51).

8. The screw air compressor according to claim 7, characterized in that: A plug-in piece (52) is provided on one side of the installation shell (50) facing the housing (10), and a plug-in slot suitable for accommodating the plug-in piece (52) is provided on one side of the housing (10) facing the installation shell (50).

9. The screw air compressor according to claim 8, characterized in that: The plug-in piece (52) comprises: A sealing portion, the sealing portion being connected to the mounting shell (50); A connecting portion, the connecting portion being arranged at the free end of the sealing portion, the connecting portion being connected to the housing (10) via a fastener (60); wherein The screw air compressor further comprises: a flexible sealing member (70), wherein the flexible sealing member (70) is arranged between the sealing portion and the plug-in groove.

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