Outlet pressure-adjustable screw compressor

Abstract

The utility model relates to the technical field of screw compressor, and disclose export pressure adjustable screw compressor, including base, and install compressor main body on the base, the top fixed mounting of base has the air inlet pipe, the side fixed mounting of base has the air outlet pipe, the top fixed mounting of base has controller and siren, the inside of air inlet pipe is provided with filter mechanism, this export pressure adjustable screw compressor, through setting installation part, can in the wind, through setting buffer spring, can make filter screen slide on the screw rod and compress buffer spring, through buffer spring can play the role of buffering, avoid filter screen to break down, and simultaneously when stopping work, through the reset force of buffer spring, can break the fixed accumulation track of dust on filter screen and reduce local accumulation, and further increase the service life of filter screen.

Description

Technical Field

[0001] This utility model relates to the field of screw compressor technology, specifically to a screw compressor with adjustable outlet pressure. Background Technology

[0002] Screw compressors primarily achieve gas compression through a pair of meshing rotors (i.e., screws). Their working principle is based on their unique rotor structure, where two rotors (female and male screws) rotate in opposite directions within a precision-machined housing, forming a series of enclosed spaces. As the rotors rotate, gas is gradually drawn in and compressed within these enclosed spaces, and finally discharged through the outlet.

[0003] A search revealed Chinese patent CN223344260U, which discloses an adjustable outlet pressure screw compressor. The compressor includes a suction end seat, a body, and an exhaust end cover arranged sequentially. The body contains a compression chamber for housing the rotor. The suction end seat has a suction port connected to the compression chamber. An outlet replacement component is detachably installed on the inner wall of the exhaust end cover, and the exhaust port on the outlet replacement component is connected to the compression chamber. This invention utilizes the outlet replacement component to adjust the output pressure of the screw compressor, solving the problem of the output pressure of the screw compressor not meeting actual needs and reducing energy waste caused by pressure mismatch.

[0004] However, existing technologies still have certain shortcomings in use. For example, the air intake pipe of a screw compressor is equipped with a filter screen to filter the air, but the filter screen is usually fixed, which can easily lead to partial blockage of the filter screen, reducing its service life. At the same time, cleaning the filter screen can only rely on the staff to disassemble it periodically. There is no blockage warning structure in the screw compressor. If the filter screen is blocked and not cleaned in time, it can easily damage the screw compressor. Utility Model Content

[0005] This invention provides a screw compressor with adjustable outlet pressure, which has the beneficial effects of avoiding local accumulation and providing a blockage warning, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable outlet pressure screw compressor, including a base and a compressor body mounted on the base, an inlet pipe fixedly mounted on the top of the base, an outlet pipe fixedly mounted on the side of the base, a controller and an alarm fixedly mounted on the top of the base, and a filter mechanism provided inside the inlet pipe.

[0007] As an optional solution of this utility model, the filtering mechanism includes a mounting groove opened at the top of the air intake pipe, a warning component is installed at the bottom of the inner cavity of the mounting groove, a filter screen is provided in the inner cavity of the mounting groove, and a mounting component is provided on the warning component at a position relative to the filter screen.

[0008] As an optional solution of this utility model, the warning component includes a plurality of hollow rods fixedly installed at the bottom of the inner cavity of the mounting groove. The top of the hollow rod is slidably connected to an inner rod, and the bottom of the inner rod is fixedly connected to a compression plate that is slidably sleeved with the inner wall of the hollow rod. A pressure sensor and a reset spring are provided inside the hollow rod.

[0009] As an optional solution of this utility model, the pressure sensor is fixedly installed at the bottom of the inner cavity of the cavity rod, and the two ends of the reset spring are fixedly connected to the bottom of the extrusion plate and the bottom of the inner cavity of the cavity rod, respectively.

[0010] As an optional solution of this utility model, the installation component includes a receiving ring fixedly installed at the top of the built-in rod, a plurality of lead screws are fixedly installed at equal intervals on the top of the receiving ring, a nut is threaded onto one end of the lead screw, a limiting groove is opened on the filter screen relative to the position of the plurality of lead screws, and both the receiving ring and the filter screen are slidably sleeved with the inner wall of the air intake pipe.

[0011] As an optional solution of this utility model, the surface of the lead screw is fitted with a plurality of buffer springs, and the plurality of buffer springs are respectively located on the inner side of two adjacent filter screens, and between the receiving ring and the filter screen.

[0012] As an optional solution of this utility model, a windproof sleeve is fixedly sleeved on the inner wall of the receiving ring, and the surface of the windproof sleeve is in contact with the inner wall of the air inlet pipe.

[0013] As an optional solution of this utility model, an extension pipe is fixedly installed at one end of the air outlet pipe, and a pressure relief valve is fixedly installed on the surface of the extension pipe.

[0014] This utility model has the following beneficial effects: 1. This adjustable outlet pressure screw compressor, through the installation of mounting components, allows the filter screen to slide on the screw and compress the buffer spring during air intake. The buffer spring acts as a buffer, preventing damage to the filter screen. At the same time, when the compressor stops working, the restoring force of the buffer spring breaks the fixed accumulation trajectory of dust on the filter screen, reducing local accumulation and thus increasing the service life of the filter screen.

[0015] 2. This adjustable outlet pressure screw compressor, by setting up an early warning component, can cause the filter screen to move downwards during air intake when there is excessive blockage. This movement causes the built-in rod to move the extrusion plate downwards, squeezing the pressure sensor. Under the control of the controller, the alarm will sound and the compressor body will stop working, thus preventing damage to the compressor body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the air intake pipe of this utility model.

[0018] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This utility model Figure 2 Schematic diagram of the structure at point B.

[0020] In the diagram: 1. Base; 2. Compressor body; 3. Inlet pipe; 4. Outlet pipe; 5. Controller; 6. Alarm; 7. Filter mechanism; 8. Extension pipe; 9. Pressure relief valve; 72. Mounting slot; 73. Warning component; 74. Filter screen; 722. Hollow rod; 723. Built-in rod; 724. Extrusion plate; 725. Pressure sensor; 726. Return spring; 741. Receiving ring; 742. Lead screw; 743. Nut; 744. Limiting groove; 745. Buffer spring; 746. Windproof sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Please see Figure 1-4The adjustable outlet pressure screw compressor includes a base 1 and a compressor body 2 mounted on the base 1. An intake pipe 3 is fixedly installed on the top of the base 1, and an outlet pipe 4 is fixedly installed on the side of the base 1. A controller 5 and an alarm 6 are fixedly installed on the top of the base 1. A filter mechanism 7 is installed inside the intake pipe 3. In use, the compressor body 2 is opened by the controller 5. Air is filtered by the filter mechanism 7 in the intake pipe 3, enters the base 1 for compression, and is then discharged from the compressor body 2.

[0024] It should also be noted that an extension pipe 8 is fixedly installed at one end of the air outlet pipe 4, and a pressure relief valve 9 is fixedly installed on the surface of the extension pipe 8, which can play the role of pressure relief.

[0025] Furthermore, the filtration mechanism 7 includes a mounting groove 71 located at the top of the air intake pipe 3. A warning component 72 is installed at the bottom of the inner cavity of the mounting groove 71, and a filter screen 73 is provided in the inner cavity of the mounting groove 71. An installation component 74 is provided on the warning component 72 at a position relative to the filter screen 73. By providing the filter screen 73, air can be filtered. By providing the warning component 72, an alarm can be triggered when the filter screen 73 is blocked, and the compressor body 2 will stop working. By providing the installation component 74, the filter screen 73 can be installed, and dust on the filter screen 73 can be prevented from accumulating locally.

[0026] Furthermore, the warning component 72 includes multiple hollow rods 721 fixedly installed at the bottom of the inner cavity of the mounting groove 71. The top of the hollow rod 721 is slidably connected to an internal rod 722, and the bottom of the internal rod 722 is fixedly connected to a pressing plate 723 that is slidably sleeved with the inner wall of the hollow rod 721. A pressure sensor 724 and a return spring 725 are installed inside the hollow rod 721. The pressure sensor 724 is fixedly installed at the bottom of the inner cavity of the hollow rod 721, and the two ends of the return spring 725 are fixedly connected to the bottom of the pressing plate 723 and the bottom of the inner cavity of the hollow rod 721, respectively. When the filter screen 73 is clogged too much, the filter screen 73 moves downward during air intake, which drives the pressing plate 723 of the internal rod 722 to move downward and squeeze the pressure sensor 724. Under the action of the controller 5, the alarm 6 can sound an alarm and the compressor body 2 can stop working to avoid damage to the compressor body 2.

[0027] Furthermore, the mounting component 74 includes a receiving ring 741 fixedly mounted on the top of the built-in rod 722. Multiple lead screws 742 are equidistantly fixedly mounted on the top of the receiving ring 741. A nut 743 is threaded onto one end of each lead screw 742. A limiting groove 744 is formed on the filter screen 73 relative to the positions of the multiple lead screws 742. Both the receiving ring 741 and the filter screen 73 are slidably fitted against the inner wall of the air intake pipe 3. Multiple buffer springs 745 are fitted onto the surface of the lead screws 742. The multiple buffer springs 745 are located on the inner sides of two adjacent filter screens 73, and between the receiving ring 741 and the filter screen 73. When installing the filter screen 73, the limiting groove 744 on the filter screen 73 is fitted onto the lead screw 742. Place a buffer spring 745 on top of the screw 742, then place a filter screen 73 on top, and repeat this process. Finally, screw the nut 743 onto the screw 742 and press the top filter screen 73 to complete the fixation. By fixing it in this way, when air is intake, the filter screen 73 can slide on the screw 742 and compress the buffer spring 745. The buffer spring 745 can play a buffering role to prevent damage to the filter screen 73. At the same time, when the work stops, the restoring force of the buffer spring 745 can break the fixed accumulation track of dust on the filter screen 73, reduce local accumulation, and thus increase the service life of the filter screen 73.

[0028] Among them, the inner wall of the receiving ring 741 is fixedly sleeved with a windproof sleeve 746, and the surface of the windproof sleeve 746 is in contact with the inner wall of the air inlet pipe 3; by setting the windproof sleeve 746, the air can be prevented from affecting the warning component 72 installed in the mounting groove 71.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An outlet pressure adjustable screw compressor, comprising a base (1) and a compressor body (2) mounted on the base (1), characterized in that: An air inlet pipe (3) is fixedly installed on the top of the base (1), an air outlet pipe (4) is fixedly installed on the side of the base (1), a controller (5) and an alarm (6) are fixedly installed on the top of the base (1), a filter mechanism (7) is provided inside the air inlet pipe (3), the filter mechanism (7) includes a mounting groove (71) opened at the top of the air inlet pipe (3), a warning component (72) is installed at the bottom of the inner cavity of the mounting groove (71), a filter screen (73) is provided in the inner cavity of the mounting groove (71), and the warning component ( 72) is provided with an installation component (74) at a position relative to the filter screen (73). The warning component (72) includes a plurality of cavity rods (721) fixedly installed at the bottom of the inner cavity of the installation groove (71). The top of the cavity rod (721) is slidably connected to an internal rod (722). The bottom of the internal rod (722) is fixedly connected to an extrusion plate (723) that is slidably sleeved with the inner wall of the cavity rod (721). The cavity rod (721) is provided with a pressure sensor (724) and a return spring (725).

2. The adjustable outlet pressure screw compressor according to claim 1, characterized in that: The pressure sensor (724) is fixedly installed at the bottom of the inner cavity of the cavity rod (721), and the two ends of the reset spring (725) are fixedly connected to the bottom of the extrusion plate (723) and the bottom of the inner cavity of the cavity rod (721), respectively.

3. The adjustable outlet pressure screw compressor according to claim 1, characterized in that: The mounting component (74) includes a receiving ring (741) fixedly mounted on the top of the built-in rod (722). Multiple lead screws (742) are fixedly mounted at equal intervals on the top of the receiving ring (741). A nut (743) is threaded onto one end of the lead screw (742). A limiting groove (744) is provided on the filter screen (73) relative to the position of the multiple lead screws (742). Both the receiving ring (741) and the filter screen (73) are slidably sleeved with the inner wall of the air intake pipe (3).

4. The adjustable outlet pressure screw compressor according to claim 3, characterized in that: The surface of the lead screw (742) is fitted with a plurality of buffer springs (745), which are located on the inner side of two adjacent filter screens (73) and between the receiving ring (741) and the filter screen (73).

5. The screw compressor with adjustable outlet pressure according to claim 3, characterized in that: The inner wall of the receiving ring (741) is fixedly fitted with a windproof sleeve (746), and the surface of the windproof sleeve (746) is in contact with the inner wall of the air inlet pipe (3).

6. The adjustable outlet pressure screw compressor according to claim 1, characterized in that: An extension pipe (8) is fixedly installed at one end of the vent pipe (4), and a pressure relief valve (9) is fixedly installed on the surface of the extension pipe (8).

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