Efficient energy-saving compression pump

Abstract

An efficient energy-saving compression pump comprises a pump body and a driving part. A driving cavity and an air cavity which are communicated with each other are formed in the pump body, a pressure cylinder is arranged in the air cavity, a piston with a first through hole is slidably mounted in the pressure cylinder, and an air inlet communicated with the driving cavity and an air outlet communicated with the pressure cylinder are formed in the pump body; the driving part comprises a stator and a rotor, the stator is installed in the driving cavity and adopts an excitation winding enclosing the rotor, a permanent magnet corresponding to the excitation winding is arranged on the rotor, and a supporting rod penetrating through the side wall of the driving cavity and connected with the piston is arranged on the rotor; after the excitation winding is powered on, the rotor can be driven to reciprocate so as to drive the piston, and the piston presses gas entering the driving cavity from the gas inlet into the pressing cylinder through the first through hole and enables the gas to be discharged through the gas outlet. According to the scheme, a mechanical structure for converting motion modes does not need to be designed, the manufacturing cost can be reduced, energy consumption can be reduced, heat generated during working can be discharged from the air outlet, the service life of the compression pump is prolonged, and the working efficiency of the compression pump is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of compression pumps, and in particular relates to a high-efficiency and energy-saving compression pump. Background Art

[0002] Compression pumps are the most commonly used pump products in the machinery industry. Commonly used compression pumps include reciprocating, rotary, vortex and other structural forms, among which the reciprocating structure is the most widely used.

[0003] Traditional reciprocating compression pumps are driven by rotary motors, which convert rotational motion into linear motion through a mechanical structure. This structure is not only expensive to manufacture, but also results in a lot of energy loss during the conversion process. At the same time, the heat generated during operation cannot be discharged in time, which affects the service life and working efficiency of the compression pump.

[0004] In view of this, it is necessary to design an efficient and energy-saving compression pump to solve this problem. Summary of the invention

[0005] Technical issues solved The present invention provides a high-efficiency and energy-saving compression pump, which can discharge the heat generated during operation while reducing the manufacturing cost and energy consumption, thereby increasing the service life and working efficiency of the compression pump.

[0006] Technical Solution To achieve the above object, the present invention provides the following technical solutions: A high-efficiency and energy-saving compression pump, comprising a pump body and a driving member; the pump body is provided with an air inlet and an air outlet, the pump body is provided with a driving chamber and an air chamber connected to each other, the driving chamber is connected to the air inlet, the air chamber is provided with a pressure cylinder connected to the air outlet, a movable piston is adapted to be installed in the pressure cylinder, and the piston is provided with a first through hole connecting the air chamber and the pressure cylinder; the driving member comprises a stator and a mover, the stator is fixedly installed in the driving chamber and adopts an excitation winding, and the excitation winding encloses the mover, the mover is provided with a permanent magnet corresponding to the excitation winding, and the mover is also provided with a support rod penetrating the side wall of the driving chamber and connected to the piston; Among them, after the excitation winding is energized, an oscillating magnetic field is generated, and the magnetic field pushes the permanent magnet on the mover. The magnetic field reversal is controlled by changing the direction of the current, thereby driving the mover to reciprocate in a straight line, so that the support rod drives the piston to move back and forth in the pressure cylinder; at the same time, the piston can press the gas entering the drive cavity and the air cavity from the air inlet into the pressure cylinder through the first through hole, and discharge the gas through the air outlet. In this process, the heat generated by the operation of the excitation winding and the mover and dissipated into the drive cavity and the air cavity is discharged together with the gas.

[0007] Preferably, the exciting winding is composed of an iron core and a plurality of groups of coils wound around the iron core at intervals.

[0008] Preferably, a second through hole communicating with the air cavity is formed in the side wall of the pressure cylinder, and the second through hole is located between the piston and the air outlet, so that the piston can press the gas in the air cavity into the pressure cylinder through the second through hole; the first through hole and the second through hole are independently arranged or arranged together.

[0009] Preferably, a fastening sleeve is installed on the side wall of the driving cavity, the fastening sleeve is slidably matched with the support rod, and the fastening sleeve can limit the rotation of the support rod.

[0010] Preferably, a sliding hole is formed in the fastening sleeve, at least one limiting surface is arranged inside the sliding hole, the support rod slidably penetrates through the sliding hole and is connected to the piston, and a limiting edge adapted to abut against the limiting surface is arranged on the support rod.

[0011] Preferably, a noise reduction seat is further installed on the pump body, a buffer cavity is arranged inside the noise reduction seat, a vent hole communicating with the buffer cavity is formed in the bottom wall of the pressure cylinder, and the air outlet is arranged on the noise reduction seat and communicates with the buffer cavity.

[0012] Preferably, a rubber cover for closing the vent hole is installed on the pump body, and when the piston squeezes the gas in the pressure cylinder to the vent hole, the rubber cover is impacted by the gas and opens the vent hole, so that the gas enters the buffer cavity.

[0013] Preferably, the buffer cavity includes a first partition cavity and a second partition cavity which are communicated with each other, the vent hole communicates with the first partition cavity, the air outlet communicates with the second partition cavity, and a gas baffle for blocking gas is arranged at the connection part of the second partition cavity and the first partition cavity to prevent the gas in the first partition cavity from directly entering the second partition cavity.

[0014] Preferably, the buffer cavity further includes a third partition cavity arranged in the second partition cavity, the air outlet only communicates with the third partition cavity, a notch communicating with the second partition cavity and away from the gas baffle is formed in the side wall of the third partition cavity, and a baffle block with irregular-shaped blocking grooves is arranged inside the third partition cavity.

[0015] Preferably, the air inlet is designed facing the stator.

[0016] Preferably, connection ends are installed on both the air inlet and the air outlet.

[0017] Preferably, there are two air cavities which are distributed on the left and right sides of the driving cavity, there are two air inlets which are respectively connected to the two air cavities, and the pressure cylinders and the pistons are arranged in both air cavities; the supporting rods are arranged at both ends of the mover, and the two supporting rods respectively extend through the left and right side walls of the driving cavity and are connected to the two pistons; controlling the current direction of the exciting winding can drive the mover to reciprocate, thereby driving the two pistons to squeeze the corresponding pressure cylinders one by one.

[0018] (III) Beneficial effects An efficient and energy-saving compression pump provided by the present invention drives the linear reciprocating motion of the mover by designing an exciting winding in cooperation with a permanent magnet, without the need to additionally design a mechanical structure for converting the motion mode, which can effectively reduce the manufacturing cost and energy consumption; by designing a unique air path structure, the heat generated by the operation of the exciting winding and the mover can be discharged from the air outlet, preventing the relevant components from being damaged due to overheating, prolonging the service life of the compression pump and improving the working efficiency of the compression pump. Description of the drawings

[0019] The 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. In the drawings: Figure 1 shows the overall structural schematic diagram of the present invention; Figure 2 shows Figure 1 front view of Figure 3 shows Figure 2 A-A sectional view of Figure 4 shows Figure 2 B-B sectional view of Figure 5 shows Figure 2 C-C sectional view of Figure 6 shows the exploded schematic diagram of the overall structure of the present invention Figure 1 ; Figure 7 shows the exploded schematic diagram of the overall structure of the present invention Figure 2 ; Figure 8 shows the exploded schematic diagram of a part of the structure of the present invention; Figure 9 shows the internal structural schematic diagram of the noise reduction seat of the present invention.

[0020] In the figure: 1 pump body, 10 connecting end, 101 air inlet, 102 air outlet, 11 drive chamber, 12 air chamber, 13 pressure cylinder, 130 second through hole, 131 air guide hole, 14 piston, 140 first through hole, 15 fastening sleeve, 150 sliding hole, 1500 limiting surface, 16 rubber cover, 2 drive member, 21 stator, 210 exciting winding, 211 iron core, 212 coil, 22 rotor, 220 permanent magnet, 221 support rod, 2210 limiting edge, 3 noise reduction seat, 30 buffer cavity, 300 air baffle, 301 first partition cavity, 302 second partition cavity, 303 third partition cavity, 3031 notch, 3032 stop block, 3033 resistance groove. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and description, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection manners.

[0022] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. It should also be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, 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 this application can be understood according to specific situations. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] It should also be noted that in the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] See the appendix Figure 1 - Appendix Figure 9 , a high-efficiency and energy-saving compression pump, comprising a pump body 1 and a driving member 2; an air inlet 101 and an air outlet 102 are provided on the pump body 1, a driving cavity 11 and an air cavity 12 that are connected to each other are provided inside the pump body 1, the driving cavity 11 is connected to the air inlet 101, a pressure cylinder 13 that is connected to the air outlet 102 is provided inside the air cavity 12, a movable piston 14 is fitted and installed in the pressure cylinder 13, and a first through hole 140 that communicates the air cavity 12 and the pressure cylinder 13 is provided on the piston 14; the driving member 2 includes a stator 21 and a rotor 22, the stator 21 is fixedly installed in the driving cavity 11 and uses an exciting winding 210, and the exciting winding 210 encloses the rotor 22, a permanent magnet 220 corresponding to the exciting winding 210 is provided on the rotor 22, and a support rod 221 that penetrates the side wall of the driving cavity 11 and is connected to the piston 14 is also provided on the rotor 22; after the exciting winding 210 is energized, it can drive the rotor 22 to reciprocate and drive the piston 14.

[0025] Specifically, before use, it is necessary to confirm that the air inlet 101 is connected to the driving cavity 11, the driving cavity 11 is connected to the air cavity 12, the air cavity 12 is connected to the pressure cylinder 13 through the first through hole 140, and the pressure cylinder 13 is connected to the air outlet 102 to ensure smooth air passage; During use, an alternating current is passed through the exciting winding 210. After the exciting winding 210 is energized, an oscillating magnetic field is generated. The magnetic field pushes the permanent magnet 220 on the rotor 22. By changing the direction of the current, the magnetic field is reversed, and then the rotor 22 is driven to move linearly back and forth, so that the piston 14 is driven by the support rod 221 to move back and forth in the pressure cylinder 13 to realize the basic function of the compression pump; at the same time, the piston 14 can press the gas entering the driving cavity 11 and the air cavity 12 from the air inlet 101 into the pressure cylinder 13 through the first through hole 140, and the gas is discharged through the air outlet 102. During this process, the heat generated and dissipated by the exciting winding 210 and the rotor 22 during operation is carried away by the gas.

[0026] In summary, compared with the prior art, the present invention drives the rotor 22 to move linearly back and forth by designing the exciting winding 210 in cooperation with the permanent magnet 220, without the need to additionally design a mechanical structure for converting the motion mode, which can effectively reduce the manufacturing cost, improve the kinetic energy transfer efficiency, reduce unnecessary energy consumption losses, and at the same time, due to the linear motion, the contact area between the periphery of the piston 14 and the inner wall of the pressure cylinder 13 is the same, which can reduce unnecessary friction and expand the limit of air pressure; by designing a unique air path structure, the heat generated by the exciting winding 210 and the rotor 22 during operation is discharged from the air outlet 102 to prevent the relevant components from being damaged due to overheating, extending the service life of the compression pump and improving the working efficiency of the compression pump.

[0027] It should be noted that the exciting winding 210 is a key component in motors and generators, mainly used to generate a magnetic field, and the magnetic field intensity can be adjusted according to the magnitude of the current. Currently, the conventional exciting winding 210 on the market mainly consists of an iron core 211 and multiple groups of coils 212 wound around the iron core 211 at intervals. After the multiple groups of coils 212 are energized, a magnetic field is generated. When the direction of the current is changed between positive / negative DC power supply, the magnetic field can be reversed. On the other hand, a frequency converter (not shown in the figure) can be set to be electrically connected to the exciting winding 210. The frequency converter can adjust the magnitude of the current by changing the frequency and voltage of the power supply to precisely control the operating frequency of the exciting winding 210, and can also adjust the direction of the current by changing the phase sequence of the three-phase electricity to precisely control the driving states of the exciting winding 210 and the mover 22, enabling this compression pump to have a frequency conversion function to achieve energy-saving speed regulation and better protect related components. Regarding the exciting winding 210, other related components can also be included to have other special functions, and the frequency converter can also have other control functions. Since there are various types of exciting windings 210 and frequency converters and they all belong to the prior art, the specific types and structures thereof are not limited in the present invention, and the related structural principles are not elaborated in detail either.

[0028] Refer to the appendix Figure 3 and the appendix Figure 7 , a second through hole 130 communicating with the air chamber 12 is formed on the side wall of the pressure cylinder 13, and the second through hole 130 is located between the piston 14 and the air outlet 102.

[0029] Specifically, when the exciting winding 210 drives the mover 22 to move and drives the piston 14 to move along the pressure cylinder 13, the piston 14 can press the gas in the air chamber 12 into the pressure cylinder 13 through the second through hole 130, and the gas in the pressure cylinder 13 is discharged from the discharge port. Therefore, the function of the second through hole 130 is similar to that of the first through hole 140.

[0030] Among them, the first through hole 140 and the second through hole 130 can be set independently or together. Setting the first through hole 140 and the second through hole 130 independently can save manufacturing costs. Setting the first through hole 140 and the second through hole 130 together makes it easier for the gas in the driving chamber 11 and the air chamber 12 to enter the pressure cylinder 13, improving the heat dissipation efficiency. The manufacturer can set them according to user requirements, and this is not limited in the present invention.

[0031] Refer to the appendix Figure 1 - appendix Figure 8 , a fastening sleeve 15 is installed on the side wall of the driving chamber 11. The fastening sleeve 15 is slidably matched with the support rod 221, and the fastening sleeve 15 can limit the rotation of the support rod 221. This design can prevent the mover 22 from rotating and at the same time enable the support rod 221 to reciprocate more stably.

[0032] Refer to the appendix Figure 3 - appendixFigure 6 and the attached Figure 9 A sliding hole 150 is provided on the fastening sleeve 15. At least one limiting surface 1500 is provided inside the sliding hole 150. The support rod 221 slidably penetrates through the sliding hole 150 and is connected to the piston 14. A limiting edge 2210 adapted to abut against the limiting surface 1500 is provided on the support rod 221. The cooperation between the sliding hole 150 and the support rod 221 enables the mover 22 to move back and forth in the driving cavity 11, while the cooperation between the limiting surface 1500 and the limiting edge 2210 can limit the rotation of the support rod 221 and the mover 22.

[0033] It should be noted that multiple limiting surfaces 1500 can also be provided, and multiple limiting edges 2210 are correspondingly provided for the limiting surfaces. The present invention does not limit this; on the other hand, in addition to the above structure, other limiting structures can also be designed on the fastening sleeve 15 to limit the sliding of the support rod 221 and prevent it from rotating. Since there are various related structures, the present invention does not limit this.

[0034] Refer to the attached Figure 1 - attached Figure 8 Refer to the attached - attached. Considering that directly discharging the gas in the pressure cylinder 13 from the air outlet 102 will generate relatively large noise and affect the use experience, to solve this problem, a noise reduction seat 3 is also installed on the pump body 1 of the present invention. A buffer cavity 30 is provided inside the noise reduction seat 3. An air guide hole 131 communicating with the buffer cavity 30 is opened on the bottom wall of the pressure cylinder 13. The air outlet 102 is provided on the noise reduction seat 3 and communicates with the buffer cavity 30.

[0035] Specifically, after the gas in the pressure cylinder 13 enters the buffer cavity 30 through the air guide hole 131, the buffer cavity 30 can increase the flow space of the gas, so that the high-speed air flow coming out of the air guide hole 131 can be buffered and reduced, thereby playing a noise reduction role.

[0036] Refer to the attached Figure 4 - attached Figure 6 Refer to the attached - attached. A rubber cover 16 for closing the air guide hole 131 is installed on the pump body 1. When the piston 14 squeezes the gas in the pressure cylinder 13 to the air guide hole 131, the rubber cover 16 is impacted by the gas and opens the air guide hole 131 to enable the gas to enter the buffer cavity 30; the design of the rubber cover 16 can, on the one hand, prevent external dust from entering the pressure cylinder 13 through the air outlet 102 and the air guide hole 131, and on the other hand, can play a role in blocking the buffered gas, making the gas entering the buffer cavity 30 from the air guide hole 131 relatively stable.

[0037] Refer to the attached Figure 4 - attached Figure 8, the buffer cavity 30 includes a first partition cavity 301 and a second partition cavity 302 that are connected to each other. The air guide hole 131 is connected to the first partition cavity 301, and the air outlet 102 is connected to the second partition cavity 302. A baffle plate 300 for blocking gas is provided at the connection between the second partition cavity 302 and the first partition cavity 301 to prevent the gas in the first partition cavity 301 from directly entering the second partition cavity 302.

[0038] Specifically, after the gas in the pressure cylinder 13 enters the first partition cavity 301 through the air guide hole 131, the first partition cavity 301 is gradually filled. During this process, the gas flow rate is initially slowed down. When the gas in the first partition cavity 301 enters the second partition cavity 302, the second partition cavity 302 will also be gradually filled to buffer the gas flow rate again. Therefore, the combined use of the first partition cavity 301 and the second partition cavity 302 forms a two-stage buffer, which can further reduce noise. In addition, during the process of the gas flowing towards the second partition cavity 302, the baffle plate 300 can block the gas again to prevent the gas from directly pouring into the second partition cavity 302 and generating abnormal noises.

[0039] Refer to the appendix Figure 4 - appendix Figure 8 , the buffer cavity 30 further includes a third partition cavity 303 provided in the second partition cavity 302. The air outlet 102 is only connected to the third partition cavity 303. A notch 3031 that is away from the baffle plate 300 and connected to the second partition cavity 302 is provided on the side wall of the third partition cavity 303, and a baffle block 3032 with an irregular-shaped resistance groove 3033 is provided inside the third partition cavity 303.

[0040] Specifically, first, after the gas in the second partition cavity 302 enters the third partition cavity 303, the gas will gradually fill the third cavity to form a three-stage buffer, ensuring a stable air flow speed and reducing vibrations and noises generated by the impact of high-speed air flow on the surrounding air or the noise reduction seat 3. Second, the air flow entering the third partition cavity 303 through the notch 3031 will be dispersed into multiple directions and paths under the guidance of the baffle block 3032 and the resistance groove 3033, making the air flow distribution more uniform and avoiding strong noises generated by the impact of concentrated air flow. In addition, the internal shape structure of the third partition cavity 303 also enables sound waves to be reflected and interfered multiple times inside, and some sound waves cancel each other out during this process, further improving the noise reduction effect.

[0041] Refer to the appendix Figure 1 - appendix Figure 4 , the air inlet 101 is designed facing the stator 21. This design enables the gas to directly carry the heat on the stator 21 after entering the drive cavity 11 from the air inlet 101 and be discharged through the air outlet 102 under the action of the piston 14.

[0042] Refer to the appendix Figure 1 - appendix Figure 4, connection ends 10 are installed on both the air inlet 101 and the air outlet 102. This design facilitates the connection of the air inlet 101 and the air outlet 102 to devices such as air supply equipment and terminal equipment (not shown in the figure).

[0043] Refer to the appendix Figure 1 - Appendix Figure 9 , there are two air chambers 12 which are distributed on the left and right sides of the drive chamber 11. There are two air inlets 101 which are respectively connected to the two air chambers 12, and pressure cylinders 13 and pistons 14 are provided in both air chambers 12; support rods 221 are provided at both ends of the mover 22, and the two support rods 221 respectively extend through the left and right side walls of the drive chamber 11 and are connected to the two pistons 14; controlling the current direction of the control excitation winding 210 can drive the mover 22 to reciprocate and drive the two pistons 14 to squeeze the corresponding pressure cylinders 13 one by one.

[0044] Specifically, the above structural design makes full use of the reciprocating motion characteristics of the mover 22. On the premise of effectively saving energy consumption, the compression pump has a double-cylinder effect, further improving the usability of the compression pump.

[0045] It should be noted that when two air chambers 12 are provided in the pump body 1, two fastening sleeves 15, noise reduction seats 3, rubber covers 16, etc. should also be correspondingly provided and installed in the corresponding positions respectively. For details, reference can be made to the attached drawings, and no repeated description will be given here.

[0046] In the description and claims of this application, the words "comprising / including" and the words "having / including" and their variants are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0047] Some features of the present invention are described separately in different embodiments for clarity. However, these features can also be described in a single embodiment. On the contrary, some features of the present invention are described only in a single embodiment for brevity. However, these features can also be described separately or in any suitable combination in different embodiments.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency and energy-saving compression pump, characterized in that: include: A pump body (1), wherein the pump body (1) is provided with an air inlet (101) and an air outlet (102), wherein the pump body (1) is provided with a drive chamber (11) and an air chamber (12) which are connected to each other, wherein the drive chamber (11) is connected to the air inlet (101), wherein the air chamber (12) is provided with a pressure cylinder (13) which is connected to the air outlet (102), wherein a movable piston (14) is fitted in the pressure cylinder (13), and wherein the piston (14) is provided with a first through hole (140) which is connected to the air chamber (12) and the pressure cylinder (13); A driving member (2), the driving member (2) comprising a stator (21) and a mover (22), the stator (21) being fixedly mounted in the driving cavity (11) and adopting an excitation winding (210), wherein the excitation winding (210) encloses the mover (22), the mover (22) being provided with a permanent magnet (220) corresponding to the excitation winding (210), and the mover (22) being further provided with a support rod (221) penetrating a side wall of the driving cavity (11) and connected to the piston (14); When the excitation winding (210) is energized, it can drive the mover (22) to move back and forth, thereby driving the piston (14); the piston (14) presses the gas entering the drive chamber (11) from the air inlet (101) into the pressure cylinder (13) through the first through hole (140), and discharges the gas through the air outlet (102).

2. A high-efficiency and energy-saving compression pump according to claim 1, characterized in that: A second through hole (130) connected to the air cavity (12) is provided on the side wall of the pressure cylinder (13), and the second through hole (130) is located between the piston (14) and the gas outlet (102), so that the piston (14) can press the gas in the air cavity (12) into the pressure cylinder (13) through the second through hole (130); the first through hole (140) and the second through hole (130) are provided independently or together.

3. The high-efficiency energy-saving compression pump according to claim 1, characterized in that: A fastening sleeve (15) is mounted on the side wall of the driving cavity (11); the fastening sleeve (15) is slidably matched with the support rod (221), and the fastening sleeve (15) can limit the rotation of the support rod (221).

4. A high-efficiency energy-saving compression pump according to claim 3, characterized in that: The fastening sleeve (15) is provided with a sliding hole (150), the inner side of the sliding hole (150) is provided with at least one limiting surface (1500), the support rod (221) can slidably pass through the sliding hole (150) and connect to the piston (14), and the support rod (221) is provided with a limiting edge (2210) adapted to abut against the limiting surface (1500).

5. The high-efficiency and energy-saving compression pump according to claim 1, characterized in that: The pump body (1) is also provided with a noise reduction seat (3), a buffer cavity (30) is provided inside the noise reduction seat (3), an air guide hole (131) connected to the buffer cavity (30) is provided on the bottom wall of the pressure cylinder (13), and the air outlet (102) is provided on the noise reduction seat (3) and connected to the buffer cavity (30).

6. A high-efficiency energy-saving compression pump according to claim 5, characterized in that: The pump body (1) is provided with a rubber cover (16) for closing the air guide hole (131), and when the piston (14) squeezes the gas in the pressure cylinder (13) to the air guide hole (131), the rubber cover (16) is impacted by the gas and opens the air guide hole (131), so that the gas enters the buffer cavity (30).

7. The high-efficiency and energy-saving compression pump according to claim 5, characterized in that: The buffer cavity (30) comprises a first compartment (301) and a second compartment (302) which are connected to each other, the air guide hole (131) is connected to the first compartment (301), the air outlet (102) is connected to the second compartment (302), and a gas baffle (300) for blocking gas is provided at the connection point between the second compartment (302) and the first compartment (301), so as to prevent the gas in the first compartment (301) from directly entering the second compartment (302).

8. The high-efficiency energy-saving compression pump according to claim 7, characterized in that: The buffer cavity (30) further comprises a third cavity (303) arranged in the second cavity (302); the air outlet (102) is only connected to the third cavity (303); a notch (3031) away from the air baffle plate (300) and connected to the second cavity (302) is provided on a side wall of the third cavity (303); and a baffle (3032) having an irregularly shaped baffle groove (3033) is provided inside the third cavity (303).

9. The high-efficiency and energy-saving compression pump according to claim 1, characterized in that: The air inlet (101) is designed to face the stator (21).

10. A high-efficiency energy-saving compression pump according to any one of claims 1 to 9, characterized in that: Two air cavities (12) are provided and are distributed on the left and right sides of the driving cavity (11); two air inlets (101) are provided and are respectively connected to the two air cavities (12); and the pressure cylinder (13) and the piston (14) are both provided in the two air cavities (12); the support rods (221) are provided at both ends of the mover (22); the two support rods (221) respectively extend through the left and right side walls of the driving cavity (11) and connect the two pistons (14); and the current direction of the excitation winding (210) can drive the mover (22) to move back and forth, thereby driving the two pistons (14) to squeeze the corresponding pressure cylinders (13) one by one.

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