Waterproof air compressor

Abstract

The utility model provides a waterproof air compressor. Relates to the technical field of air compressors and comprises a cylinder body, a cavity dividing nozzle and a piston, and a piston barrel extending outwards is arranged on one side of the cylinder body. The cavity dividing nozzle is arranged at the outer end of the piston cylinder, an air inlet and an air outlet are formed in the cavity dividing nozzle, and valve plates are arranged at the positions, corresponding to the air inlet and the air outlet, in the cavity dividing nozzle; the piston is arranged in the piston cylinder; the prime motor is arranged in the cylinder body, located on one side of the piston barrel and connected with the piston, and the prime motor is used for driving the piston to move in the piston barrel, so that the valve plate corresponding to the air inlet position is opened when the cylinder body sucks air, and the valve plate corresponding to the air outlet position is opened when the cylinder body discharges air. The waterproof structure has the effect of remarkably improving the waterproof performance of the air compressor.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a waterproof air compressor. Background Art

[0002] An air compressor is a device used to compress gas. An air compressor can convert the mechanical energy of a prime mover (usually an electric motor) into the pressure energy of gas. The air compressor is similar in structure to a water pump. The interior of most air compressors is a reciprocating piston type, that is, the electric motor drives the internal piston to reciprocate, achieving the purpose of inhaling air, compressing air, and finally discharging air.

[0003] When using an ultrasonic therapeutic apparatus to treat a patient, sometimes it is also necessary to synchronously use liquid medicine to treat the patient to improve the treatment efficacy. In this case, the air compressor needs to work in a water-related environment. However, some existing air compressors cannot achieve waterproof sealing during use, resulting in the air compressor being unable to work in a water-related or fully immersed water environment. Summary of the Utility Model

[0004] In order to improve the situation that the existing air compressor cannot work in a water-related or fully immersed water environment, this application provides a waterproof air compressor.

[0005] This application provides a waterproof air compressor, adopting the following technical scheme:

[0006] A waterproof air compressor includes

[0007] A cylinder block, on one side of which there is a piston cylinder extending outwards, and the internal spaces of the cylinder block and the piston cylinder are connected;

[0008] A cavity dividing nozzle, which is arranged at the outer end of the piston cylinder, and the cavity dividing nozzle is provided with an air inlet and an air outlet. Valve plates are arranged at the positions corresponding to the air inlet and the air outlet in the cavity dividing nozzle, and the valve plates are elastic;

[0009] A piston, which is arranged in the cavity where the cylinder block is connected to the piston cylinder;

[0010] And a prime mover, which is arranged in the cylinder block, on one side of the piston cylinder and connected to the piston. The prime mover is used to drive the piston to move in the piston cylinder, so that when the cylinder block inhales air, the valve plate at the position corresponding to the air inlet opens, and when the cylinder block discharges air, the valve plate at the position corresponding to the air outlet opens.

[0011] Furthermore, a partition is arranged between the piston cylinder and the cavity dividing nozzle for separating the internal spaces of the piston cylinder and the cavity dividing nozzle. The partition and the cavity dividing nozzle enclose independent air inlet and air outlet cavities, and through holes corresponding to the air inlet and the air outlet are opened on the partition.

[0012] Furthermore, the two valve plates are respectively arranged on the upper and lower sides of the partition plate, and respectively correspond to the through holes of the corresponding air inlet and air outlet. The valve plate corresponding to the air inlet tilts towards the cylinder block, and the valve plate corresponding to the air outlet tilts towards the cavity nozzle.

[0013] Furthermore, a separation wall is arranged inside the cylinder block for sealing the internal space of the cylinder block. The piston is located in the sealed cavity formed by the separation wall and the cylinder block. The prime mover is fixed to the side wall of the separation wall, and the output shaft of the prime mover penetrates and is rotatably connected to the separation wall for driving the piston to move.

[0014] Furthermore, the piston includes a piston head and a piston rod. One end of the piston rod is connected to the bottom of the piston head, and the other end is connected to the output shaft of the prime mover. The piston head is slidably connected inside the piston cylinder, and the prime mover drives the piston head to move through the piston rod.

[0015] Furthermore, a crank is also arranged between the prime mover and the piston rod. The output shaft of the prime mover penetrates through the crank and is fixed to the crank. The crank includes a connecting portion, and the connecting portion is movably connected to one end of the bottom of the piston rod.

[0016] Furthermore, the cylinder block includes an end cover on the side away from the prime mover, a cover cylinder covering the outside of the prime mover, and a motor cover at the end of the cover cylinder. The end cover is hermetically connected to the cylinder block, one end of the cover cylinder is hermetically connected to the cylinder block, and the other end is hermetically connected to the motor cover.

[0017] Furthermore, a cooling fan is rotatably connected to one end of the prime mover away from the cylinder block and drives the cooling fan to rotate at the same time. The cooling fan is coaxially arranged with the cover cylinder. A heat exchange hole is opened on the cylinder block. The heat exchange hole is communicated with the internal space of the cover cylinder and is used for externally connecting a heat exchange pipeline for heat dissipation.

[0018] Furthermore, sealing members are arranged at the connection between the end cover and the cylinder block, the connection between the motor cover and the cover cylinder, and the connection between the cover cylinder and the cylinder block for sealing each connection.

[0019] Furthermore, the prime mover is a brushless motor.

[0020] In summary, the present application includes at least one of the following beneficial effects:

[0021] 1. By integrating the prime mover inside the cylinder block, arranging a piston cylinder on one side of the cylinder block, arranging a cavity nozzle at the outer end of the piston cylinder, and integrating the air inlet and air outlet on the cavity nozzle, only the sealing of the cylinder block needs to be ensured to achieve overall sealing, greatly improving the sealing and waterproof performance of the air compressor and adapting to work in wading or fully immersed water environments;

[0022] 2. By arranging a partition between the cylinder block and the cavity-dividing nozzle, and providing elastic valve plates on both sides of the partition, the valve plates can follow the suction and exhaust actions of the piston to close the through holes on the partition corresponding to the air inlet or air outlet, enabling the piston to complete the suction and exhaust actions within one reciprocating cycle.

[0023] 3. By arranging a separation wall inside the cylinder block, the separation wall can separate the internal spaces of the shroud and the cylinder block, keeping the internal space of the cylinder block in a sealed state all the time, and improving the sealing effect of the air compressor. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram showing the overall air compressor in an embodiment of the present application;

[0025] Figure 2 is a structure showing the piston drive inside the cylinder block in an embodiment of the present application;

[0026] Figure 3 is a cross-sectional view showing the internal structure of the cylinder block in an embodiment of the present application;

[0027] Figure 4 is an exploded view showing the internal structure of the air compressor in an embodiment of the present application.

[0028] Description of the Reference Numerals: 1. Cylinder block; 11. End cover; 12. Cavity-dividing nozzle; 121. Air inlet; 122. Air outlet; 123. Intake cavity; 124. Exhaust cavity; 13. Partition; 131. Through hole; 132. Valve plate; 14. Piston rod; 15. Piston head; 16. Separation wall; 17. Heat exchange hole; 2. Prime mover; 21. Shroud; 22. Cooling fan; 23. Motor cover; 24. Crank; 241. Connection part; 3. First seal; 4. Second seal; 5. Third seal; 6. Fourth seal; 7. Fifth seal; 8. Piston cylinder. Detailed Embodiments

[0029] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in conjunction with the drawings. The following introduces a relatively optimal one among multiple possible embodiments of the present application, aiming to provide a basic understanding of the present application, but not aiming to identify the key or decisive elements of the present application or limit the scope to be protected.

[0030] In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0031] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices shall be regarded as part of the specification.

[0032] In the description of the present application, it should be noted that the circuits, electronic components, and modules involved in the present application are all prior arts, which can be fully implemented by those skilled in the art without further elaboration. The content protected by the present application does not involve improvements to the internal structure and methods.

[0033] Furthermore, it should be noted that unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] An embodiment of the present application provides a waterproof air compressor. In this embodiment, the waterproof air compressor can be used in the medical field for assisting in the treatment of patients. It can be understood that the waterproof air compressor is also applicable to other application fields involving water or full immersion in water, and its scope of application is not limited by the specific embodiments of the present application.

[0035] Refer to Figure 1 , the waterproof air compressor includes a cylinder block 1. The cylinder block 1 itself is the outer shell part of the piston cylinder. One end of the cylinder block 1 is provided with an end cover 11. The end cover 11 is detachably connected to the cylinder block 1. The detachable connection method can be a bolt connection, that is, using fastening bolts to pass through the end cover 11 and threadedly connect with the cylinder block 1, so as to fix the end cover 11 on the cylinder block 1, facilitating the subsequent installation or disassembly of the end cover 11 by the staff.

[0036] A piston cylinder 8 is integrally formed on the side wall of the cylinder block 1. The piston cylinder 8 extends outward relative to the cylinder block 1, and the internal space of the piston cylinder 8 is connected to the internal space of the cylinder block 1. One end of the piston cylinder 8 far from the cylinder block 1 is detachably connected with a cavity dividing nozzle 12. The detachable connection method can also be a bolt connection to fix the end cover 11 on the piston cylinder 8, facilitating the subsequent installation or disassembly of the cavity dividing nozzle 12 by the staff. The cavity dividing nozzle 12 is hermetically connected to the piston cylinder 8. The cavity dividing nozzle 12 and the end cover 11 together with the cylinder block 1 form a sealing structure to improve the sealing performance of the cylinder block 1. An air inlet 121 and an air outlet 122 are provided on the cavity dividing nozzle 12. The air inlet 121 and the air outlet 122 can be externally connected to pipelines respectively. The air inlet 121 and the air outlet 122 are connected to the internal space of the cylinder block 1. The pipeline and the air inlet 121 or the air outlet 122 are also hermetically connected, so that the air inlet and air outlet functions do not interfere with each other.

[0037] Reference Figure 1 and Figure 2 The waterproof air compressor further includes a prime mover 2, which is selected as a brushless motor. Compared with a brushed motor, a brushless motor has the advantages of less friction, less loss, less heat generation, and longer service life. Using a brushless motor as the prime mover 2 to drive the internal piston can significantly improve the working efficiency of the air compressor.

[0038] The prime mover 2 is fixed on the side of the cylinder block 1 away from the end cover 11. A cover cylinder 21 is provided on the outer cover of the prime mover 2. The cover cylinder 21 is coaxially arranged with the prime mover 2 and has a gap with the prime mover 2, which is convenient for the prime mover 2 to dissipate heat.

[0039] One end of the cover cylinder 21 away from the cylinder block 1 is provided with a motor cover 23. The motor cover 23 is detachably connected to the cover cylinder 21, and at the same time, the cover cylinder 21 is detachably connected to the cylinder block 1. In the embodiment of the present application, one end of the cover cylinder 21 directly abuts against the side wall of the cylinder block 1, and the motor cover 23 is directly fixedly connected to the cylinder block 1 through fastening bolts. The motor cover 23 presses the cover cylinder 21, so that the motor cover 23, the cover cylinder 21 and the cylinder block 1 together form a seal for the prime mover 2.

[0040] Reference Figure 2 and Figure 3 A partition 13 is provided between the cylinder block 1 and the sub-chamber nozzle 12. The partition 13 is hermetically connected to the piston cylinder 8, and can separate the internal spaces of the piston cylinder 8 and the sub-chamber nozzle 12, so that the space inside the piston cylinder 8 and the air chamber in the sub-chamber nozzle 12 do not interfere with each other. Through holes 131 corresponding to the air inlet 121 and the air outlet 122 are respectively formed through the partition 13, which is convenient for the gas to flow and be transported inside the air compressor.

[0041] A piston is arranged inside the piston cylinder 8. The piston includes a piston rod 14 and a piston head 15. The piston head 15 is slidably connected inside the piston cylinder 8. One end of the piston rod 14 is fixedly connected to the bottom of the piston head 15, and the other end of the piston rod 14 is connected to the output shaft of the prime mover 2. The prime mover 2 drives the piston head 15 to reciprocate through the piston rod 14.

[0042] Furthermore, a separating wall 16 is integrally formed inside the cylinder block 1. The separating wall 16 separates the internal spaces of the cover cylinder 21 and the cylinder block 1. The prime mover 2 is fixed to the side wall of the separating wall 16 through fastening bolts. The output shaft of the prime mover 2 passes through and is rotatably connected to the separating wall 16, and a crank 24 is fixedly connected after the output shaft of the prime mover 2 passes through the separating wall 16. The output shaft of the prime mover 2 passes through the crank 24 and is fixed to the crank 24. The crank 24 can rotate following the output shaft of the prime mover 2.

[0043] The crank 24 includes a connecting portion 241 that is eccentrically arranged. The connecting portion 241 is movably connected to one end of the bottom of the piston rod 14. The way of the movable connection can be that a pin shaft passes through the connecting portion 241 and the piston rod 14 at the same time, and the pin shaft is rotatably connected to the connecting portion 241 and the piston rod 14 at the same time.

[0044] The output shaft of the prime mover 2 can drive the crank 24 to rotate, thereby driving the piston rod 14 to swing cyclically, and further driving the piston head 15 to reciprocate inside the piston cylinder 8 to complete the actions of suction, compression and exhaust.

[0045] Referring to Figure 3 and Figure 4 , the split chamber nozzle 12 is provided with an independent intake chamber 123 and an outlet chamber 124. The intake port 121 and the outlet port 122 respectively correspond to and communicate with the intake chamber 123 and the outlet chamber 124. Two valve plates 132 are fixed on the partition plate 13. Both of the two valve plates 132 are elastic shrapnel. The valve plate 132 will deform itself when subjected to an external force and will return to its initial state when the external force is removed. The two valve plates 132 are respectively arranged on the upper and lower sides of the partition plate 13 and respectively correspond to the through holes 131 of the corresponding intake port 121 and outlet port 122. The sizes and shapes of the two valve plates 132 match the sizes and shapes of their corresponding through holes 131. Among them, the valve plate 132 corresponding to the intake port 121 tilts towards the cylinder block 1, and the valve plate 132 corresponding to the outlet port 122 tilts towards the split chamber nozzle 12.

[0046] When the cylinder block 1 sucks air, the piston head 15 moves towards the inside of the cylinder block 1, and the air pressure in the sealed space between the piston head 15 and the partition plate 13 decreases. At this time, the valve plate 132 corresponding to the intake port 121 is opened under the action of the atmospheric pressure, while the valve plate 132 corresponding to the outlet port 122 blocks the through hole 131 corresponding to the outlet port 122 under the action of the atmospheric pressure, and the air inhaled into the cylinder block 1 is compressed in the cylinder block 1; on the contrary, when the cylinder block 1 discharges air, the valve plate 132 corresponding to the intake port 121 blocks the through hole 131 corresponding to the intake port 121 under the action of the pressure, while the other valve plate 132 is opened, so that the compressed air can be discharged from the outlet port 122.

[0047] Referring to Figure 4 , a cooling fan 22 is provided at one end of the prime mover 2 away from the cylinder block 1. The cooling fan 22 is coaxially arranged with the cover cylinder 21, and the cooling fan 22 is directly fixedly connected to the moving ring of the prime mover 2, so that the cooling fan 22 can rotate following the operation of the prime mover 2. A heat exchange hole 17 is provided on the cylinder block, and the heat exchange hole 17 is communicated with the internal space of the cover cylinder 21.

[0048] When the prime mover 2 is working, the cooling fan 22 rotates accordingly. The rotating cooling fan 22 can stir the gas inside the cover cylinder 21, promoting the flow of the internal gas, making the heat generated by the prime mover 2 evenly distributed. And the heat exchange holes 17 can be externally connected to heat exchange pipes, improving the heat exchange efficiency of the heat inside the cover cylinder 21 and effectively enhancing the heat dissipation effect of the prime mover 2.

[0049] Referring to Figure 4 , to improve the sealing effect of the air compressor, the first seal 3 and the second seal 4 are respectively arranged at both ends of the cover cylinder 21 along its own axis. Both the first seal 3 and the second seal 4 can be rubber sealing rings. The first seal 3 is located between the motor cover 23 and the cover cylinder 21, and can seal the connection between the motor cover 23 and the cover cylinder 21. At the same time, the second seal 4 is located between the cover cylinder 21 and the cylinder block 1, and can seal the connection between the cover cylinder 21 and the cylinder block 1.

[0050] Furthermore, a third seal 5 is arranged at one end of the cylinder block 1 away from the prime mover 2. The third seal 5 can also be a rubber sealing ring. The third seal 5 can seal the connection between the end cover 11 and the cylinder block 1, further improving the sealing performance of the connection between the end cover 11 and the cylinder block 1.

[0051] Referring to Figure 4 , a fourth seal 6 is arranged between the partition plate 13 and the piston cylinder 8. The fourth seal 6 can also be a rubber sealing ring or a sealing ring made of other materials. The fourth seal 6 is respectively arranged corresponding to the air inlet 121 and the air outlet 122, and can seal the connections between the air inlet 121 and the air outlet 122 and the partition plate 13 respectively, making the air intake and air outlet processes not interfere with each other, and at the same time can also improve the sealing performance of the air inlet 121 and the air outlet 122.

[0052] Furthermore, a fifth seal 7 is arranged between the partition plate 13 and the cylinder block 1. The fourth seal 6 can also be a rubber sealing ring. The fifth seal 7 is sleeved outside the partition plate 13 and abuts against both the partition plate 13 and the outer wall of the cylinder block 1 at the same time, and can seal the connection between the partition plate 13 and the cylinder block 1, further improving the sealing performance between the partition plate 13 and the cylinder block 1.

[0053] The implementation principle of a waterproof air compressor in an embodiment of the present application is: the cover cylinder 21, the motor cover 23 and the cylinder block 1 together form a cavity for accommodating and sealing the prime mover 2. And the cover cylinder 21 is sealingly connected to the motor cover 23, the cover cylinder 21 is sealingly connected to the cylinder block 1, the end cover 11 is sealingly connected to the cylinder block 1, and the branch cavity nozzle 12 is sealingly connected to the cylinder block 1, greatly improving the sealing and waterproof performance of the air compressor, making the sealing and waterproof performance of the air compressor such that the air compressor can better adapt to the working environments of wading or full immersion in water.

[0054] In this text, the orientation terms such as front, rear, upper, and lower are defined based on the positions of the components in the drawings and their positions relative to each other, solely for the clarity and convenience of expressing the technical solution. It should be understood that they are relative concepts and can change accordingly depending on different usage and placement methods. The use of these orientation terms should not limit the scope of protection claimed in this application.

[0055] Without conflict, the above-mentioned embodiments and the features in the embodiments in this text can be combined with each other.

[0056] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A waterproof air compressor, characterized in that: include A cylinder body, one side of which is provided with a piston cylinder extending outward, and the cylinder body is connected to the internal space of the piston cylinder; A cavity nozzle is arranged at the outer end of the piston cylinder, and the cavity nozzle is provided with an air inlet and an air outlet. The cavity nozzle is provided with valve plates at positions corresponding to the air inlet and the air outlet, and the valve plates are elastic; A piston is disposed in a cavity communicating with the cylinder body and the piston barrel; And a prime mover, which is arranged in the cylinder body, located on one side of the piston tube and connected to the piston, and the prime mover is used to drive the piston to move in the piston tube, so that the valve plate corresponding to the air inlet position opens when the cylinder body inhales, and the valve plate corresponding to the air outlet position opens when the cylinder body exhales.

2. The waterproof air compressor according to claim 1, characterized in that: A partition is arranged between the piston cylinder and the chamber nozzle to separate the internal space of the piston cylinder and the chamber nozzle. The partition and the chamber nozzle surround to form an independent air inlet cavity and air outlet cavity. The partition is provided with through holes corresponding to the air inlet and the air outlet respectively.

3. The waterproof air compressor according to claim 2, characterized in that: The two valve plates are respectively arranged on the upper and lower sides of the partition, and respectively correspond to the through holes of the corresponding air inlet and air outlet. The valve plate corresponding to the air inlet is tilted toward the cylinder body, and the valve plate corresponding to the air outlet is tilted toward the cavity nozzle.

4. The waterproof air compressor according to claim 1, characterized in that: A separation wall is arranged inside the cylinder body for sealing the internal space of the cylinder body. The piston is located in a sealed cavity formed by the separation wall and the cylinder body. The prime mover is fixed to the side wall of the separation wall. The output shaft of the prime mover passes through and is rotatably connected to the separation wall for driving the piston to move.

5. The waterproof air compressor according to claim 4, characterized in that: The piston comprises a piston head and a piston rod, one end of the piston rod is connected to the bottom of the piston head, and the other end is connected to the output shaft of the prime mover. The piston head is slidably connected in the piston cylinder, and the prime mover drives the piston head to move through the piston rod.

6. The waterproof air compressor according to claim 5, characterized in that: A crank is also provided between the prime mover and the piston rod. The output shaft of the prime mover passes through the crank and is fixed to the crank. The crank includes a connecting portion, which is movably connected to one end of the bottom of the piston rod.

7. The waterproof air compressor according to claim 1, characterized in that: The cylinder body includes an end cover away from the prime mover, a cover barrel covered outside the prime mover, and a motor cover located at the end of the cover barrel. The end cover is sealed to the cylinder body, one end of the cover barrel is sealed to the cylinder body, and the other end is sealed to the motor cover.

8. The waterproof air compressor according to claim 7, characterized in that: The prime mover is rotatably connected to one end of the cylinder away from the cylinder body, and simultaneously drives the cooling fan to rotate. The cooling fan is coaxially arranged with the cover cylinder. A heat exchange hole is opened on the cylinder body. The heat exchange hole is connected to the internal space of the cover cylinder and is used for external heat exchange pipes to dissipate heat.

9. The waterproof air compressor according to claim 7, characterized in that: The connection between the end cover and the cylinder body, the connection between the motor cover and the cover barrel, and the connection between the cover barrel and the cylinder body are all provided with sealing members for sealing the respective connection points.

10. The waterproof air compressor according to claim 1, characterized in that: The prime mover is a brushless motor.

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