Double-voltage screw compressor

Abstract

The utility model relates to the technical field of screw compressors, in particular to a double-voltage screw compressor. A double-voltage screw compressor comprises a compressor body provided with a driving motor and a screw main machine, a box body connected with the compressor body and arranged on the periphery of the compressor body, and a main electric control box and a secondary electric control box which are arranged on the side wall of the box body and electrically connected with the compressor body. According to the utility model, the side door which is rotatably connected is arranged on the box body, and the side door and the box body are buckled and fixed in position through the buckling assembly, so that the box body is convenient to open and close, and maintenance personnel are easy to maintain internal parts of the compressor; maintenance personnel make the switch lever generate arc-shaped swing, then the tail end of the Y-shaped rotating shaft is opened, the position of the side door is fixed after the fixing teeth on the box body are matched with the Y-shaped rotating shaft, and the whole process is simple and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of screw compressors, in particular to a dual-voltage screw compressor. Background Art

[0002] As one type of positive displacement air compressor, a twin-screw air compressor draws air into the air compressor and compresses it through the meshing rotation of the yin and yang rotors, and discharges compressed air that meets the pressure requirements. However, common twin-screw air compressors have defects, mainly reflected in the fact that a specific model of twin-screw air compressor is only suitable for a specific input voltage, making it difficult to achieve seamless switching. In order to be compatible with a variety of power usage environments, the power input module has a complex structure and is prone to failure, so a dual-voltage screw compressor has emerged.

[0003] In the dual-voltage screw compressor in the prior art, since the main electric control box and the secondary electric control box are integrated on the side of the compressor shell, the box panels set on both sides cannot be moved and disassembled, which makes it difficult for maintenance personnel to open the box to repair the internal components of the compressor. Therefore, a dual-voltage screw compressor is designed. On the basis of retaining the dual-voltage electric control boxes on both sides, side doors that are easy to open are set to facilitate maintenance and opening. Utility Model Content

[0004] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures specifically pointed out in the description and other drawings of the description.

[0005] The utility model aims to overcome the above-mentioned shortcomings and provides a dual-voltage screw compressor. A rotatably connected side door is provided on a casing, and the side door is fastened and fixed to the casing by a snap-fit ​​assembly, so that the casing can be easily opened and closed, thereby making it easy for maintenance personnel to repair internal components of the compressor. The snap-fit ​​assembly consists of a Y-shaped shaft, a spring and a switch lever. The maintenance personnel swing the switch lever in an arc shape to open the end of the Y-shaped shaft, match the fixed teeth on the casing with the Y-shaped shaft, and fix the position of the side door. A transfer interface is also added to the oil-gas separation port of the compressor. The connection of the pipeline can be achieved by rotating and twisting, while ensuring the air tightness of the pipeline. The overall process is simple and effective.

[0006] The utility model provides a dual-voltage screw compressor, comprising a compressor body provided with a driving motor and a screw main engine, a box body connected to the compressor body and arranged at the periphery of the compressor body, a main electric control box and a secondary electric control box which are arranged on the side wall of the box body and electrically connected to the compressor body; the box body comprises a main body bracket and a side door rotatably connected to the main body bracket, a fixing tooth is extended from the side of the main body bracket, the bottom side of the side door is rotatably connected to the main body bracket, a fixing groove is provided on the top of the side door, a buckling assembly is provided in the side door, the fixing tooth passes through the fixing groove and buckles with the buckling assembly to limit the position of the side door. The compressor body equipped with a drive motor and a screw main unit completes the basic functional operation of the compressor. The box arranged on the periphery of the compressor body plays a protective role. The main electric control box and the secondary electric control box located on the side are electrically connected to the compressor body. The dual voltage design plays a role in adapting to a variety of voltage environments. Fixed teeth are provided on the main body bracket, which are adapted to the snap-fit ​​components in the side door to fix the position of the side door. After the snap-fit ​​components are set, the side door can be easily opened or closed, which is convenient for maintenance personnel to inspect the internal components of the compressor. The overall process is convenient and quick.

[0007] In some embodiments, a switch slot is provided on the outside of the side door, and movable cavities are provided on both sides of the side door, the snap-fit ​​assembly is provided in the movable cavity, and the switch slot and the movable cavity are connected by a lever channel, and the cross section of the lever channel is arc-shaped. The switch slot is provided on the outside of the side door, and cooperates with the pressing plate on the switch lever, so that the user can control the opening and closing of the snap-fit ​​assembly by pressing, thereby controlling whether the side door is closed, and the lever channel with an arc-shaped cross section is used to match the movement path of the switch lever, so that the Y-shaped shaft can smoothly rotate along the arc.

[0008] In some embodiments, the snap-fit ​​assembly includes a Y-shaped rotating shaft, a spring and a switch lever, the Y-shaped rotating shaft includes an upper arm and a lower arm, the upper arm and the lower arm are elastically connected so that the upper arm can be opened and closed, the spring is connected between the end of the lower arm and the side wall of the movable cavity, and a bracket is also extended on the side wall of the movable cavity, and the bracket is rotatably connected to the middle of the Y-shaped rotating shaft. Since the bracket is fixed to the middle of the Y-shaped rotating shaft, under the action of the switch lever on the lower side, the lower arm rotates in an arc, thereby driving the upper arm on the upper side to rotate accordingly, and the two elastically connected upper arms gradually open during the rotation process, thereby adapting to the size of the fixed tooth, so that the fixed tooth can be clamped between the two upper arms.

[0009] In some embodiments, the switch lever is connected between the two Y-shaped rotating shafts, and a pressing plate is arranged on the switch lever, and the pressing plate is located in the switch slot. The pressing plate cooperates with the switch lever to control the opening and closing of the side door, and the switch lever is used to connect the Y-shaped rotating shafts on both sides so that the two can operate synchronously, and the pressing plate arranged in the middle provides a fulcrum for maintenance personnel to operate the buckle assembly.

[0010] In some embodiments, a fixing groove is provided on the fixing tooth, and the side wall of the fixing groove close to the buckling assembly is set to an arc shape, and the fixing groove is adapted to the size of the upper arm. When the lower arm rotates to the maximum value and contacts the wall of the active cavity under the control of the switch lever, the upper arm also contacts the cavity wall on the other side, and the two upper arms are opened to the maximum value. At this time, the ends of the two upper arms are located at the arc-shaped side wall of the fixing groove. The switch lever is released, and the lower arm is retracted with the cooperation of the spring at the end of the lower arm, and the end of the upper arm slides into the fixing groove. The entire Y-shaped shaft returns to the normal position, and the fixing tooth and the buckling assembly are fixed in relative position, and the side door is closed. When the side door needs to be opened, the switch lever is pressed again to open the upper arm, and the side door can be pulled hard to make the end of the upper arm disengage from the fixing groove, and the fixing tooth and the buckling assembly are separated from each other, completing the door opening step.

[0011] In some embodiments, an expansion block is further provided on the side wall of the movable cavity, the expansion block is located above the bracket, the expansion block is a semi-circular cone, and the upper diameter of the expansion block is smaller than the lower diameter of the expansion block, and the expansion block is clamped between the two upper arms. In order to gradually open the two upper arms during the rotation process, a gradually enlarged expansion block is provided between the two upper arms. When the two upper arms are in contact with the expansion block, if a clockwise rotation occurs, the opening angle is enlarged, and if a counterclockwise rotation occurs, the opening angle is reduced to cooperate with the locking fixed teeth.

[0012] In some embodiments, a cooling assembly is also included, and the cooling assembly includes a rotating support frame and a cooling box. The rotating support frame is rotatably connected to the top of the box body, and the cooling box is placed on the rotating support frame. Several oil-gas separation interfaces are set on the side of the cooling box. The oil-gas separation interface is connected to the screw main unit through a pipeline, and the oil-gas separation interface and the pipeline are movably connected through a transfer interface. The rotatable rotating support frame and the movable cooling box are provided, so that the components on the upper part of the compressor are easy to disassemble and convenient for maintenance. The cooling box in this application is an oil cooling box, which is mainly used to cool hydraulic oil and lubricating oil. The oil-gas separation interface is used to dock with the pipeline to transport oil and gas and cool it. The connection port in the prior art is mainly fixed by bolts, which need to be repeatedly twisted by a wrench to fix the pipeline position and ensure airtightness. The transfer interface of this application can be fixed by simply twisting without tools, which is easy to operate and easy to disassemble.

[0013] In some embodiments, a locking platform is provided on the periphery of the oil-gas separation interface, and the adapter includes an adapter base and a rotating interface. One end of the adapter base is connected to the pipeline, and the other end of the adapter base is extended upward to be provided with a rotating interface, and a buckle groove is provided on the rotating interface, and the buckle groove matches the locking platform. The adapter base is used to connect with each pipeline, and the buckle groove provided on the rotating interface enables the adapter to be tightly connected to the oil-gas separation interface by rotation when connected, thereby ensuring the airtightness of the connection.

[0014] In some embodiments, a sealing ring is also included. When the oil-gas separation interface and the adapter are connected by rotating buckles, the sealing ring is sleeved around the oil-gas separation interface and the adapter. The sealing ring is elastic and has an opening on the side. The sealing ring sleeved around the periphery is used to increase the sealing of the connection to prevent oil and gas from leaking from the joint.

[0015] In some embodiments, the cooling box is provided with an axial flow fan, which is clamped on the rotating support frame and located in the box. The axial flow fan provided on the cooling box cools the cooling box and discharges the heat emitted by the cooling box, thereby maintaining the normal operation of the compressor. After the fan is clamped on the rotating support frame, the position of the fan and the cooling box can be fixed to prevent the cooling box from shifting during operation.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] The utility model provides a rotatably connected side door on a box body, and fastens the side door with the box body in a fixed position through a fastening assembly, thereby realizing easy opening and closing of the box body, so that maintenance personnel can easily repair internal components of the compressor. The fastening assembly is composed of a Y-shaped rotating shaft, a spring and a switch lever. The maintenance personnel swing the switch lever in an arc shape to open the end of the Y-shaped rotating shaft, match the fixed teeth on the box body with the Y-shaped rotating shaft, and thus fix the position of the side door. A transfer interface is also added at the oil and gas separation port of the compressor, and the connection of the pipeline can be achieved by rotating and twisting, while ensuring the air tightness of the pipeline. The overall process is simple and effective.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0019] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments described with reference to various figures and drawings.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0022] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the compressor in some embodiments of the utility model;

[0025] Figure 2 It is a schematic diagram of the external structure of the side door in some embodiments of the utility model;

[0026] Figure 3 It is a schematic diagram of the internal structure of the side door in some embodiments of the utility model;

[0027] Figure 4 It is a schematic diagram of the rotation and fastening process of the fastening assembly in some embodiments of the utility model;

[0028] Figure 5 It is a schematic diagram of the position structure of the upper arm and the extension block in some embodiments of the utility model;

[0029] Figure 6 It is a schematic diagram of the specific structure of the transfer interface in some embodiments of the utility model;

[0030] Figure 7 It is a schematic diagram of the connection between the oil and gas separation interface and the adapter interface in some embodiments of the utility model.

[0031] Description of main reference numerals:

[0032] 1. Compressor body;

[0033] 11. Driving motor; 12. Screw main unit; 13. Main electric control box; 14. Secondary electric control box;

[0034] 2. Box body;

[0035] 21. Main frame;

[0036] 22. Fixed teeth;

[0037] 23. Fixed groove;

[0038] 3. Side door;

[0039] 31. Fixed slot;

[0040] 32. Snap-fit ​​assembly;

[0041] 321, Y-type shaft;

[0042] 3211, upper arm;

[0043] 3212, lower arm;

[0044] 322. Spring;

[0045] 323. Switch lever;

[0046] 33. Switch slot;

[0047] 34. Activity cavity;

[0048] 35. Leverage channel;

[0049] 36. Bracket;

[0050] 37. Extension block;

[0051] 4. Cooling components;

[0052] 41. Rotate the support frame;

[0053] 42. Cooling box;

[0054] 43. Oil and gas separation interface;

[0055] 44. Locking table;

[0056] 45. Axial flow fan;

[0057] 5. Pipeline;

[0058] 6. Adapter;

[0059] 61. Adapter base;

[0060] 62. Rotary interface;

[0061] 63. Buckle slot;

[0062] 64. Sealing ring. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model, but not to limit the utility model.

[0064] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0067] Reference Figure 1-2 , Figure 1 It is a schematic diagram of the overall structure of the compressor in some embodiments of the utility model; Figure 2 It is a schematic diagram of the external structure of the side door in some embodiments of the utility model.

[0068] According to some embodiments of the utility model, the utility model provides a dual-voltage screw compressor, including a compressor body 1 provided with a driving motor 11 and a screw main unit 12, a box body 2 connected to the compressor body 1 and arranged on the periphery of the compressor body 1, a main electric control box 13 and a secondary electric control box 14 which are arranged on the side walls of the box body 2 and electrically connected to the compressor body 1; the box body 2 includes a main body bracket 21 and a side door 3 rotatably connected to the main body bracket 21, a fixing tooth 22 is extended from the side of the main body bracket 21, the bottom side of the side door 3 is rotatably connected to the main body bracket 21, a fixing groove 31 is provided on the top of the side door 3, a snap-fit ​​assembly 32 is provided in the side door 3, and the fixing tooth 22 is snapped with the snap-fit ​​assembly 32 after passing through the fixing groove 31 to limit the position of the side door 3. The compressor body 1 provided with a driving motor 11 and a screw main unit 12 completes the basic functional operation of the compressor. The box body 2 arranged on the periphery of the compressor body 1 plays a protective role. The main electric control box 13 and the secondary electric control box 14 located on the side are electrically connected to the compressor body 1. The dual voltage design plays a role in adapting to various voltage environments. The main frame 21 is provided with fixing teeth 22, which are adapted to the snap-fit ​​assembly 32 in the side door 3, so as to fix the position of the side door 3. After the snap-fit ​​assembly 32 is set, the side door 3 can be easily opened or closed, so that it is convenient for maintenance personnel to inspect the components inside the compressor. The overall process is convenient and fast.

[0069] Reference Figure 3-4 , Figure 3 It is a schematic diagram of the internal structure of the side door in some embodiments of the utility model; Figure 4 Schematic diagram of the rotation and fastening process of the fastening assembly in some embodiments of the utility model.

[0070] According to some embodiments of the utility model, optionally, a switch slot 33 is provided on the outside of the side door 3, and an active cavity 34 is provided on both sides of the side door 3. The snap-fit ​​assembly 32 is provided in the active cavity 34, and the switch slot 33 and the active cavity 34 are connected by a lever channel 35, and the cross section of the lever channel 35 is arc-shaped. The switch slot 33 is located on the outside of the side door 3, and cooperates with the pressing plate on the switch lever 323, so that the user can control the opening and closing of the snap-fit ​​assembly 32 by pressing, thereby controlling whether the side door 3 is closed. The lever channel 35 with an arc-shaped cross section is used to match the movement path of the switch lever 323, so that the Y-shaped shaft 321 can rotate smoothly along the arc.

[0071] The buckle assembly 32 includes a Y-shaped rotating shaft 321, a spring 322 and a switch lever 323. The Y-shaped rotating shaft 321 includes an upper arm 3211 and a lower arm 3212. The upper arm 3211 and the lower arm 3212 are elastically connected so that the upper arm 3211 can be opened and closed. The spring 322 is connected between the end of the lower arm 3212 and the side wall of the movable chamber 34. A bracket 36 is also extended on the side wall of the movable chamber 34. The bracket 36 is rotatably connected to the middle of the Y-shaped rotating shaft 321. Since the bracket 36 is fixed to the middle of the Y-shaped rotating shaft 321, under the action of the switch lever 323 on the lower side, the lower arm 3212 rotates in an arc, thereby driving the upper arm 3211 on the upper side to rotate accordingly. The two elastically connected upper arms 3211 gradually open during the rotation process, thereby adapting to the size of the fixed tooth 22, so that the fixed tooth 22 can be clamped between the two upper arms 3211.

[0072] The switch lever 323 is connected between the two Y-shaped rotating shafts 321, and a pressing plate is arranged on the switch lever 323, and the pressing plate is located in the switch slot 33. The pressing plate cooperates with the switch lever 323 to control the opening and closing of the side door 3, and the switch lever 323 is used to connect the Y-shaped rotating shafts 321 on both sides so that the two can operate synchronously, and the pressing plate arranged in the middle provides a fulcrum for maintenance personnel to operate the buckle assembly 32.

[0073] A fixing groove 23 is disposed on the fixing tooth 22 . The side wall of the fixing groove 23 close to the buckling component 32 is configured in an arc shape. The fixing groove 23 is adapted to the size of the upper arm 3211 . When, under the control of the switch lever 323, the lower arm 3212 rotates to the maximum value and contacts the wall of the active cavity 34, the upper arm 3211 also contacts the wall on the other side, and the two upper arms 3211 open to the maximum value. At this time, the ends of the two upper arms 3211 are located at the arc-shaped side walls of the fixed groove 23. The switch lever 323 is released, and with the cooperation of the spring 322 at the end of the lower arm 3212, the lower arm 3212 is retracted, and the end of the upper arm 3211 slides into the fixed groove 23. The entire Y-shaped shaft 321 returns to the center, and the fixed teeth 22 and the snap-fit ​​assembly 32 are fixed in relative position, and the side door 3 is closed. When the side door 3 needs to be opened, the switch lever 323 is pressed again to open the upper arm 3211. The side door 3 can be pulled hard to make the end of the upper arm 3211 disengage from the fixed groove 23, and the fixed teeth 22 and the snap-fit ​​assembly 32 are disengaged from each other, completing the door opening step.

[0074] Reference Figure 5 , Figure 5 It is a schematic diagram of the position structure of the upper arm and the extension block in some embodiments of the utility model.

[0075] According to some embodiments of the utility model, optionally, an expansion block 37 is further provided on the side wall of the movable cavity 34, the expansion block 37 is located above the bracket 36, the expansion block 37 is a semi-circular cone, and the upper diameter of the expansion block 37 is smaller than the lower diameter of the expansion block 37, and the expansion block 37 is clamped between the two upper arms 3211. In order to gradually open the two upper arms 3211 during the rotation process, a gradually enlarged expansion block 37 is provided between the two upper arms 3211. When the two upper arms 3211 are in contact with the expansion block 37, if a clockwise rotation is generated, the opening angle is enlarged, and if a counterclockwise rotation is generated, the opening angle is reduced, so as to cooperate with the buckling fixed teeth 22.

[0076] Reference Figure 6-7 , Figure 6 It is a schematic diagram of the specific structure of the transfer interface in some embodiments of the utility model; Figure 7 It is a schematic diagram of the connection between the oil and gas separation interface and the adapter interface in some embodiments of the utility model.

[0077] According to some embodiments of the utility model, the compressor optionally further includes a cooling assembly 4, which includes a rotating support frame 41 and a cooling box 42, the rotating support frame 41 is rotatably connected to the top of the box body 2, the cooling box 42 is placed on the rotating support frame 41, and a plurality of oil-gas separation interfaces 43 are arranged on the side of the cooling box 42, the oil-gas separation interface 43 is connected to the screw main unit 12 through the pipeline 5, and the oil-gas separation interface 43 and the pipeline 5 are movably connected through the adapter 6. The rotatable rotating support frame 41 and the movable cooling box 42 are arranged so that the components on the upper part of the compressor are easy to disassemble and convenient for maintenance. The cooling box 42 in the present application is an oil cooling box 42, which is mainly used to cool hydraulic oil and lubricating oil. The oil-gas separation interface 43 is arranged to dock with the pipeline 5 to transport oil and gas and cool it. The connection port in the prior art is mainly fixed by bolts, which need to be repeatedly twisted by a wrench to fix the position of the pipeline 5 and ensure airtightness, while the adapter 6 of the present application can be fixed by simply twisting without tools, which is easy to operate and easy to disassemble.

[0078] The oil-gas separation interface 43 is provided with a locking platform 44 at its periphery, and the adapter 6 includes an adapter base 61 and a rotating interface 62. One end of the adapter base 61 is connected to the pipeline 5, and the other end of the adapter base 61 is provided with a rotating interface 62 extending upward, and a buckle groove 63 is provided on the rotating interface 62, and the buckle groove 63 matches the locking platform 44. The adapter base 63 is used to connect with each pipeline 5, and the buckle groove 63 provided on the rotating interface 62 enables the adapter 6 to be tightly connected with the oil-gas separation interface 43 by rotation when connected, thereby ensuring the airtightness of the connection.

[0079] The compressor further includes a sealing collar 64, which is sleeved around the oil-gas separation interface 43 and the adapter 6 when the oil-gas separation interface 43 is connected to the adapter 6 by rotation and buckling. The sealing collar 64 is elastic and has an opening on the side. The sealing collar 64 sleeved around the periphery is used to increase the sealing of the connection to prevent oil and gas from leaking from the joint.

[0080] The cooling box 42 is provided with an axial flow fan 45, which is clamped on the rotating support frame 41 and is located in the box body 2. The axial flow fan 45 provided on the cooling box 42 cools the cooling box 42 and discharges the heat emitted by the cooling box 42, thereby maintaining the normal operation of the compressor. After the fan is clamped on the rotating support frame 41, the position of the fan and the cooling box 42 can be fixed to prevent the cooling box 42 from shifting during operation.

[0081] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0082] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0083] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the utility model. However, those skilled in the relevant art will understand that the utility model can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A dual-voltage screw compressor, characterized in that: include The compressor body is provided with a drive motor and a screw main unit; A box body connected to the compressor body and arranged outside the compressor body; A main electric control box, which is arranged on the side wall of the box body and is electrically connected to the compressor body; A secondary electric control box, which is disposed on the side wall of the box body and is electrically connected to the compressor body; The box body includes a main body support and a side door rotatably connected to the main body support, a fixing tooth is extended from the side of the main body support, the bottom side of the side door is rotatably connected to the main body support, a fixing groove is provided on the top of the side door, a snap-fit ​​assembly is provided in the side door, the fixing tooth passes through the fixing groove and snaps with the snap-fit ​​assembly to limit the position of the side door.

2. The dual-voltage screw compressor according to claim 1, characterized in that: A switch slot is provided on the outer side of the side door, and movable cavities are provided on both sides of the side door. The buckle assembly is arranged in the movable cavity. The switch slot is connected to the movable cavity through a lever channel, and the cross section of the lever channel is arc-shaped.

3. The dual-voltage screw compressor according to claim 2, characterized in that: The snap-fit ​​assembly includes a Y-shaped rotating shaft, a spring and a switch lever. The Y-shaped rotating shaft includes an upper arm and a lower arm. The upper arm and the lower arm are elastically connected so that the upper arm can be opened and closed. The spring is connected between the end of the lower arm and the side wall of the movable cavity. A bracket is also extended on the side wall of the movable cavity, and the bracket is rotatably connected to the middle part of the Y-shaped rotating shaft.

4. The dual-voltage screw compressor according to claim 3, characterized in that: The switch lever is connected between the two Y-shaped rotating shafts. A pressing plate is arranged on the switch lever, and the pressing plate is located in the switch slot.

5. The dual-voltage screw compressor according to claim 3, characterized in that: The fixing tooth is provided with a fixing groove, and the side wall of the fixing groove close to the buckling component is arranged in an arc shape, and the fixing groove is adapted to the size of the upper arm.

6. The dual-voltage screw compressor according to claim 3, characterized in that: An expansion block is also arranged on the side wall of the active cavity. The expansion block is located above the bracket. The expansion block is a semi-circular cone. The upper diameter of the expansion block is smaller than the lower diameter of the expansion block. The expansion block is clamped between the two upper arms.

7. The dual-voltage screw compressor according to claim 1, characterized in that: It also includes a cooling component, which includes a rotating support frame and a cooling box. The rotating support frame is rotatably connected to the top of the box body, and the cooling box is placed on the rotating support frame. Several oil-gas separation interfaces are set on the side of the cooling box. The oil-gas separation interface is connected to the screw main unit through a pipeline, and the oil-gas separation interface and the pipeline are movably connected through a transfer interface.

8. The dual-voltage screw compressor according to claim 7, characterized in that: A locking platform is arranged at the periphery of the oil-gas separation interface. The adapter interface includes an adapter base and a rotating interface. One end of the adapter base is connected to the pipeline. The other end of the adapter base is extended upwardly and is provided with a rotating interface. A snap groove is arranged on the rotating interface, and the snap groove matches the locking platform.

9. The dual-voltage screw compressor according to claim 8, characterized in that: It also includes a sealing ring. When the oil-gas separation interface and the adapter are connected by a rotating buckle, the sealing ring is sleeved on the periphery of the oil-gas separation interface and the adapter. The sealing ring is elastic and has an opening on the side.

10. The dual-voltage screw compressor according to claim 7, characterized in that: The cooling box is provided with an axial flow fan, which is clamped on the rotating support frame and located in the box body.

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