Sand-proof reciprocating piston air compressor

Abstract

The utility model relates to an air compressor, in particular to a sand-proof reciprocating piston air compressor, and belongs to the technical field of air compressors. Comprising a cabinet, an air compressor main machine and a plurality of filtering assemblies, the air compressor main machine is installed in the cabinet, and the cabinet is totally closed; a dust cover is installed at the top of the filtering assembly and located outside the machine cabinet, at least one filtering assembly is installed at the top of the machine cabinet, at least one filtering assembly is installed on the lower portion of the machine cabinet, and the filtering assemblies are arranged at the top and the bottom in the totally-enclosed machine cabinet respectively so that an internal and external airflow circulation system can be formed. When ventilation heat dissipation or moisture removal operation needs to be carried out, the linkage shaft drives the switching assembly to control the power fan to rotate forwards or backwards, so that humid hot air in the cabinet is discharged through the adsorption layer in the filtering cavity, and fresh air is introduced. Therefore, the technical problems that heat dissipation is poor and internal wet and hot airflow cannot be discharged due to totally-closed protection are effectively solved.

Description

Technical Field

[0001] This utility model relates to an air compressor, specifically a reciprocating piston air compressor that is windproof and sandproof, belonging to the field of air compressor technology. Background Technology

[0002] Air compressors, as key equipment for compressing gas into high-pressure gas, are widely used in many industrial fields such as machinery manufacturing, chemical industry, mining, metallurgy, food, and pharmaceuticals. In recent years, to adapt to harsh working environments with high levels of wind, sand, and dust, reciprocating piston air compressors have generally adopted fully enclosed cabinet protection technology in their design. Fully enclosed cabinets effectively isolate external sand, rainwater, and other contaminants, thereby protecting the compressor's internal components, extending equipment lifespan, and reducing the risk of mechanical wear and seal failure caused by sand and dust intrusion.

[0003] However, due to the limited airflow inside the fully enclosed cabinet, the moisture, condensate, and hot air generated by the air compressor are difficult to expel in a timely manner. Especially in environments with high humidity or large temperature differences, the inability to quickly remove internal moisture not only leads to localized temperature increases and accelerated lubricant oxidation but also easily causes electrical components to become damp, increasing the risk of failure. Existing technologies have attempted to address these issues by incorporating ventilation openings or ducts into the cabinet, but the design often fails to simultaneously achieve both high-efficiency filtration and good air convection, making it difficult to achieve the dual benefits of wind and sand protection and effective ventilation and heat dissipation.

[0004] In summary, while existing fully enclosed cabinet air compressors can promote air circulation, they also increase the possibility of dust directly entering the cabinet. Furthermore, due to limitations in the area and location of ventilation openings, it is difficult for hot and humid air inside to form a stable and efficient discharge and convection circulation, resulting in the equipment being in a high-temperature and high-humidity state for a long time, which reduces the overall operating efficiency and reliability of the system.

[0005] Based on the shortcomings of the existing technology, this utility model proposes a reciprocating piston air compressor that is windproof and sandproof, so as to solve the technical problems of windproof and sandproof and airflow circulation of the current fully enclosed cabinet air compressor. Summary of the Invention

[0006] The technical objective of this invention is to provide a reciprocating piston air compressor that is resistant to wind and sand, in order to solve the problem in the prior art where the limited area and location of the air compressor's ventilation opening makes it difficult for the internal hot air and moisture to form a stable and efficient discharge and convection circulation, resulting in the equipment being in a high-temperature and high-humidity state for a long time.

[0007] To achieve the above-mentioned technical objectives, this utility model provides the following technical solution:

[0008] This utility model provides a reciprocating piston air compressor for wind and sand protection, including a cabinet, an air compressor main unit, and multiple filter components. The air compressor main unit is installed inside the cabinet, and the cabinet is fully enclosed. Dust covers are installed on the top of each filter component and outside the cabinet. At least one filter component is installed on the top of the cabinet, and at least one filter component is installed on the bottom of the cabinet. The multiple filter components form a circulation of airflow inside and outside the cabinet. The filter components blow air or exhaust air into the cabinet through an internal power fan.

[0009] The filtration assembly includes a linkage shaft at the axial center, an upper power chamber, and a lower filtration chamber. The linkage shaft can slide back and forth, with a telescopic rod connected to its upper end and a pressure valve connected to its lower end. The power chamber is equipped with a power fan, which is connected to the linkage shaft via a switching assembly to control the forward or reverse rotation of the power fan. The filtration chamber is filled with a breathable adsorption layer and is connected to a drain pipe. Both the power chamber and the filtration chamber have fixed brackets on their inner walls for mounting the linkage shaft.

[0010] Specifically, the reciprocating motion of the linkage shaft will drive the top pressure valve to move synchronously; the movement of the top pressure valve into the filter chamber will squeeze the adsorption layer, and at the same time, the upward movement of the linkage shaft will trigger the switching component to control the power fan to blow air into the filter chamber; the movement of the top pressure valve out of the filter chamber will open the bottom of the filter chamber, and at the same time, the downward movement of the linkage shaft will trigger the switching component to control the power fan to draw air into the filter chamber.

[0011] The switching component includes an upper trigger switch, a switching connector, and a lower trigger switch. Both the upper and lower trigger switches are electrically connected to the power fan. The switching connector is installed on the linkage shaft and its initial state is between the upper and lower trigger switches.

[0012] Preferably, a reset component is installed above and below the switching component. The reset component includes a reset base, a reset spring, and a movable reset block mounted on a fixed bracket. The movable reset block is mounted on the reset base via the reset spring and is in contact with the end face of the switching component.

[0013] The filter chamber has a receiving groove at its bottom, which is connected to the drain pipe.

[0014] Preferably, the receiving groove is located below the adsorption layer and outside the top pressure valve.

[0015] The top pressure valve has a raised auxiliary pressure plate installed on the side facing the filter chamber, and the auxiliary pressure plate is used to squeeze the adsorption layer.

[0016] Preferably, the auxiliary pressure plate is corrugated and has several ventilation holes.

[0017] Preferably, at least two sewage pipes are installed.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model establishes an internal and external airflow circulation system by installing filter components at the top and bottom of a fully enclosed cabinet. When ventilation, heat dissipation, or dehumidification is required, the linkage shaft drives the top pressure valve to switch between opening and closing. At the same time, the switching component controls the forward or reverse rotation of the power fan, allowing the humid and hot air inside the cabinet to be discharged through the adsorption layer in the filter chamber, while introducing fresh air filtered by the dust cover. This effectively solves the technical problems of poor heat dissipation and the inability to expel internal humid and hot air caused by the fully enclosed protection.

[0020] 2. This utility model features an auxiliary pressure plate with a wavy shape on the top pressure valve, and several vent holes are formed on its surface. During the movement of the top pressure valve, the auxiliary pressure plate applies uniform pressure to the adsorption layer within the filter chamber, helping to fix the adsorption layer and enhance the filtration effect during air intake. It also reduces adsorption layer clogging and maintenance frequency, improving system reliability and service life. Furthermore, the auxiliary pressure plate and vent holes enhance dust filtration and improve air circulation, effectively improving the overall performance of wind and sand protection and ventilation / heat dissipation. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] The above and other aspects of the present invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the installation of the filter assembly of this utility model inside the air compressor cabinet;

[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the installation of the top structure of this utility model;

[0026] Figure 4 This is a frontal schematic diagram of the entire utility model;

[0027] Figure 5 This is a utility model Figure 4 A sectional view at point AA;

[0028] Figure 6 This is a utility model Figure 5 An enlarged view of point A;

[0029] Figure 7 This is a utility model Figure 6 An enlarged view of point C;

[0030] Figure 8 This is a utility model Figure 5 An enlarged view of point B;

[0031] Figure 9 This is a schematic diagram of the top pressure valve of this utility model.

[0032] In the diagram: 1. Filter assembly; 10. Cabinet; 11. Dust cover; 12. Air compressor main unit; 2. Telescopic rod; 3. Fixed bracket; 4. Linkage shaft; 5. Power chamber; 6. Filter chamber; 61. Adsorption layer; 62. Receiving groove; 7. Drain pipe; 8. Switching assembly; 81. Power fan; 82. Reset assembly; 821. Reset base; 822. Reset spring; 823. Movable reset block; 83. Upper trigger switch; 84. Switching connector; 85. Lower trigger switch; 9. Top pressure valve; 91. Auxiliary pressure plate; 92. Vent hole. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this embodiment clearer, the technical solutions of this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments. The components of this embodiment described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments provided in the accompanying drawings is not intended to limit the scope of the claimed embodiments, but merely to illustrate selected embodiments of the present embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of these embodiments.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0039] The following detailed description of some embodiments of this invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] This utility model provides a reciprocating piston air compressor for wind and sand protection, including a cabinet 10, an air compressor main unit 12, and three filter components 1. The air compressor main unit 12 is installed at the bottom of the cabinet 10, and the cabinet 10 is fully enclosed. Dust covers 11 are installed on the top of the filter components 1 and outside the cabinet 10. One filter component 1 is installed at the center of the top of the cabinet 10, and one filter component 1 is installed on each side of the lower part of the cabinet 10, facing the air compressor main unit 12. This arrangement of two filter components 1 (one above the other) creates airflow circulation between the inside and outside of the cabinet 10. Figure 1-9 As shown, the filter assembly 1 mainly includes a dust cover 11, a linkage shaft 4, a top pressure valve 9, a power chamber 5, a power fan 81, a switching assembly 8 and a reset assembly 82, a filter chamber 6 and an adsorption layer 61.

[0041] like Figure 2As shown, in this embodiment, the dust cover 11 is installed on the top of the filter assembly 1 to prevent dust and impurities from entering and to protect the internal electronic and mechanical components; the linkage shaft 4 is located at the center of the device and can slide up and down; its upper end is fixedly connected to a telescopic rod 2, and its lower end is fixedly connected to a pressure valve 9 through a special connector.

[0042] like Figure 3 As shown, in this embodiment, fixed brackets 3 are provided on both sides of the linkage shaft 4 along its inner wall to ensure stable and balanced motion trajectory.

[0043] like Figure 5 and Figure 9 As shown, the top pressure valve 9 is installed at the lower end of the linkage shaft 4, and its movement is directly driven by the up and down displacement of the linkage shaft 4. The top pressure valve 9 is provided with a raised auxiliary pressure plate 91 facing the filter chamber 6. The auxiliary pressure plate 91 is designed in a wave shape and is used to apply pressure to the breathable adsorption layer 61 filled in the filter chamber 6.

[0044] Furthermore, the auxiliary pressure plate 91 has several vent holes 92 for assisting in filtering fresh air drawn in from the outside.

[0045] like Figure 4 and Figure 5 As shown, the power chamber 5 is installed on the upper part of the linkage shaft 4, and a power fan 81 is installed inside it. The power fan 81 is connected to the linkage shaft 4 through the switching component 8, and can switch between forward rotation (for air intake) or reverse rotation (for air blowing) according to the motion state of the linkage shaft 4.

[0046] It is worth noting that, due to the presence of the switching component 8, each filter component 1 can perform air intake or exhaust operations by switching the working state of the power fan 81. Therefore, in this embodiment, the working state of the top and bottom filter components 1 can be changed according to the different locations of the heat accumulation and humid airflow gathering areas in the cabinet 10, thereby achieving reasonable and efficient airflow circulation.

[0047] like Figure 5-7 As shown, the switching assembly 8 includes a switching connector 84 mounted on the linkage shaft 4, and upper and lower trigger switches 85 connected to the power fan 81 circuit. In the initial state, the switching connector 84 is located between the upper trigger switch 83 and the lower trigger switch 85. Simultaneously, reset assemblies 82 (including a reset base 821, a reset spring 822, and a movable reset block 823) are respectively installed at the upper and lower ends of the switching assembly 8 to ensure that the switching connector 84 is stably in the intermediate position when the system is stationary, preventing accidental triggering.

[0048] like Figure 8As shown, in this embodiment, the filter chamber 6 is located at the lower part of the filter assembly 1, and is filled with a breathable adsorption layer 61 to absorb moisture contained in the air. The bottom of the filter chamber 6 is provided with a water-retaining trough 62, which is located below the adsorption layer 61 and outside the top pressure valve 9, and discharges the wastewater mixed with dust outside the cabinet 10 through two drain pipes 7.

[0049] In a specific operating scenario, when the air compressor inside the cabinet 10 is in a dry environment and no filtration circulation operation is required, the linkage shaft 4 at the center of the filter assembly 1 is in its initial state. Specifically, the switching joint 84 on the linkage shaft 4 is located between the upper trigger switch 83 and the lower trigger switch 85, and the upper and lower end faces of the switching assembly 8 are in contact with the movable reset block 823 on the reset assembly 82. As the movable reset block 823 moves towards the switching assembly 8 under the elastic force of the reset spring 822, the two symmetrically designed movable reset blocks 823 exert a pushing force on each other, thereby making the switching joint 84 located in the middle position between the upper trigger switch 83 and the lower trigger switch 85. At this time, the switching joint 84 is not connected to either the upper trigger switch 83 or the lower trigger switch 85, the power fan 81 is in the off state, and the top pressure valve 9 at the lower end of the linkage shaft 4 is in the closed state.

[0050] When a filtration cycle is required, the working process of the filtration assembly 1 responsible for exhaust is as follows: The top telescopic rod 2 moves downward under the action of the cylinder and presses down the linkage shaft 4, thereby driving the bottom top pressure valve 9 to move downward and open, connecting the inside of the cabinet 10 with the filtration chamber 6 and thus connecting with the outside; At the same time, the switching assembly 8 moves downward synchronously, causing the lower movable reset block 823 to be pushed, and the reset spring 822 to be compressed until the contact point below the switching connector 84 contacts the lower trigger switch 85 and the circuit is connected, thereby the power fan 81 rotates to draw air into the filtration chamber 6. The humid air and hot air in the cabinet 10 are drawn into the filtration chamber 6 and come into contact with the adsorption layer 61 inside it. The moisture in the humid air is absorbed by the adsorption layer 61, and the hot air flows through the power chamber 5 and is discharged from the dust cover 11.

[0051] On the other hand, the working process of the filter assembly 1 responsible for air intake is as follows: the telescopic rod 2 moves upward and lifts the linkage shaft 4, which in turn drives the top pressure valve 9 at the bottom to move upward and open. At this time, the auxiliary pressure plate 91 on the top pressure valve 9 just covers the opening at the bottom of the filter chamber 6 and appropriately presses the adsorption layer 61 to obtain a better adsorption and dust blocking effect; then the inside of the cabinet 10 is connected to the outside through the vent hole 92 on the auxiliary pressure plate 91; at the same time, the switching assembly 8 moves upward synchronously, which pushes the upper movable reset block 823 and compresses the reset spring 822 until the contact point above the switching connector 84 contacts the upper trigger switch 83 to connect the circuit, and then the power fan 81 rotates to blow air into the filter chamber 6. Fresh air from outside the cabinet is drawn into the filter chamber 6 and comes into contact with the adsorption layer 61 inside it. The dust in the fresh air is fully absorbed by the pressed adsorption layer 61. The fresh air with the dust removed flows into the cabinet 10 and forms a circulating airway with the exhaust airflow of the filter assembly 1 responsible for exhaust.

[0052] It is worth noting that after the adsorption layer 61 of the filter assembly 1 fully absorbs moisture and dust, the moisture and dust on the adsorption layer 61 mix to form wastewater. At this time, a sewage cleaning operation is required. All the telescopic rods 2 on the filter assembly 1 will continue to move upward to lift the linkage shaft 4, which in turn drives the top pressure valve 9 to continue to move upward until the lower opening of the filter chamber 6 is closed. At the same time, the auxiliary pressure plate 91 on the top pressure valve 9 will further squeeze the adsorption layer 61, and the wastewater in the adsorption layer 61 will be squeezed out and flow into the outer receiving tank 62. Meanwhile, since the switching joint 84 moves upward and contacts the upper trigger switch 83, the power fan 81 reverses to blow air into the filter chamber 6, further accelerating the outflow of wastewater from the adsorption layer 61. At the same time, positive pressure is generated in the filter chamber 6, which causes the wastewater in the receiving tank 62 to flow out from the drain pipe 7. The drain pipe 7 leads to the outside of the cabinet 10, thereby draining the wastewater in the cabinet 10 and cleaning the adsorption layer 61 for the next adsorption use.

[0053] After the sewage discharge and cleaning operation is completed, the entire filter assembly 1 returns to its initial state. The linkage shaft 4 returns to its original position, the top pressure valve 9 resets and closes, the switching component 8 returns to the intermediate state between the upper trigger and the lower trigger, the power fan 81 stops running, and the entire system enters standby mode, waiting for the trigger of the next filtration cycle operation.

[0054] The technical features disclosed above are not limited to combinations of the disclosed features with other features. Those skilled in the art may also make other combinations of the technical features according to the purpose of the disclosure in order to achieve the purpose of this disclosure.

[0055] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

[0056] Although the present disclosure has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to the embodiments of the present disclosure, which will be obvious to those skilled in the art. Therefore, such modifications or improvements made without departing from the spirit of the present disclosure are all within the scope of protection claimed by the present disclosure.

[0057] The above description is merely illustrative of this disclosure, and modifications may be made to the present invention in light of the above detailed description. The terminology used in the appended claims should not be construed as limiting the present invention to the specific embodiments disclosed in the specification. Rather, the scope of the present invention will be fully defined by the appended claims, which will be interpreted according to the established principles of claim interpretation.

Claims

1. A wind sand proof reciprocating piston air compressor characterized by: The system includes a cabinet (10), an air compressor main unit (12), and multiple filter components (1). The air compressor main unit (12) is installed inside the cabinet (10), and the cabinet (10) is fully enclosed. A dust cover (11) is installed on the top of the filter component (1) and outside the cabinet (10). At least one filter component (1) is installed on the top of the cabinet (10), and at least one filter component (1) is installed on the bottom of the cabinet (10). Multiple filter components (1) form a circulation of airflow inside and outside the cabinet (10). The filter component (1) blows or exhausts air into the cabinet (10) through an internal power fan (81).

2. The wind sand proof reciprocating piston air compressor according to claim 1, characterized in that: The filter assembly (1) includes: a linkage shaft (4) at the axial position, which can slide up and down, with a telescopic rod (2) connected to its upper end and a top pressure valve (9) connected to its lower end. The upper power chamber (5) is equipped with a power fan (81). The power fan (81) is connected to the linkage shaft (4) through a switching component (8). The switching component (8) is used to control the power fan (81) to rotate forward or in reverse. The lower filter chamber (6) is filled with a breathable adsorption layer (61), and the filter chamber (6) is connected to the drain pipe (7); The inner walls of the power chamber (5) and the filter chamber (6) are provided with fixed brackets (3) for installing the linkage shaft (4). The reciprocating motion of the linkage shaft (4) will drive the top pressure valve (9) to move synchronously. The top pressure valve (9) moves into the filter chamber (6) and squeezes the adsorption layer (61). At the same time, the linkage shaft (4) moves upward and triggers the switching component (8) to control the power fan (81) to blow air into the filter chamber (6). The top pressure valve (9) moves outward to the filter chamber (6) and opens the bottom of the filter chamber (6). At the same time, the linkage shaft (4) moves downward and triggers the switching component (8) to control the power fan (81) to draw air into the filter chamber (6).

3. The reciprocating piston air compressor for wind and sand protection according to claim 2, characterized in that: The switching assembly (8) includes an upper trigger switch (83), a switching connector (84) and a lower trigger switch (85). The upper trigger switch (83) and the lower trigger switch (85) are both electrically connected to the power fan (81). The switching connector (84) is installed on the linkage shaft (4) and its initial state is between the upper trigger switch (83) and the lower trigger switch (85).

4. A wind sand protected reciprocating piston air compressor according to claim 2 or 3, characterized in that: The switching component (8) is equipped with a reset component (82) above and below it. The reset component (82) includes a reset base (821), a reset spring (822) and a movable reset block (823) mounted on a fixed bracket (3). The movable reset block (823) is mounted on the reset base (821) through the reset spring (822) and is in contact with the end face of the switching component (8).

5. The wind sand proof reciprocating piston air compressor of claim 2, wherein: The bottom of the filter chamber (6) is provided with a receiving groove (62), which is connected to the drain pipe (7); at least two drain pipes (7) are provided and lead to the outside of the cabinet (10).

6. The wind sand proof reciprocating piston air compressor of claim 5, wherein: The receiving groove (62) is located below the adsorption layer (61) and outside the top pressure valve (9).

7. The wind and sand proof reciprocating piston air compressor according to any one of claims 2, 3, 5, 6, characterized in that: The top pressing valve (9) is provided with a protruding auxiliary pressing plate (91) on one side facing the filter cavity (6), which is used to press the adsorption layer (61).

8. The wind sand proof reciprocating piston air compressor according to claim 7, characterized in that: The auxiliary pressing plate (91) is wavy and is provided with a plurality of air holes (92).

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