electric vacuum pump

Abstract

This utility model discloses an electric vacuum pump, relating to the field of electric vacuum pump technology. It includes a vacuum pump body comprising a housing, a screen, a circuit board assembly, a battery, a pump body, a support, a base, and a suction nozzle. The screen is located on the upper inner wall of the housing. The housing and support are snap-fitted together and the screen is located inside the housing. The battery and pump body are both located within the support. The circuit board assembly is located on top of the battery and pump body and electrically connects with the battery, pump body, and screen. A switch button is located on the side of the housing and electrically connects with the circuit board assembly. A charging port is located on the upper side of the housing. The suction nozzle is fitted onto the lower outer wall of the support. A connection key is fitted onto the bottom of the pump body. This utility model reduces the overall size of the vacuum pump, making it easier for operators to hold and operate. It also increases the grip tightness between the pump body and the operator, improving stability during use. Furthermore, the pump body allows for multi-level suction adjustment, enhancing the versatility of the vacuum pump.

Description

Technical Field

[0001] This utility model relates to the field of electric vacuum pump technology, specifically to electric vacuum pumps. Background Technology

[0002] An electric vacuum pump is a device that uses electricity as a power source and drives internal moving parts through a motor to create negative pressure in the pump chamber, thereby achieving gas extraction, transportation, or maintenance of a specific vacuum environment. However, existing electric vacuum pumps are generally quite large and not suitable for vacuuming containers such as food storage containers. Even though there are smaller handheld vacuum pumps, the suction force they can control is fixed and cannot be adjusted according to vacuuming needs. In addition, the smooth outer wall of existing vacuum pumps makes it difficult for users to hold them firmly during continuous use, reducing the effectiveness of the vacuum pump.

[0003] Therefore, we proposed an electric vacuum pump to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the above-mentioned electric vacuum pumps, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an electric vacuum pump that solves the problems of existing vacuum pumps being large in size, inconvenient to hold, and having no adjustable suction force.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An electric vacuum pump includes a vacuum pump body, which comprises a housing, a screen, a circuit board assembly, a battery, a pump body, a support, a base, and a suction nozzle. The screen is located on the upper inner wall of the housing. The housing is snap-fitted into the support and is located inside the housing. The battery and the pump body are both located inside the support. The circuit board assembly is located on top of the battery and the pump body and is electrically connected to the battery, the pump body, and the screen. A switch button is provided on the side of the housing, and the switch button is electrically connected to the circuit board assembly. A charging port is provided on the upper side of the housing. The suction nozzle is sleeved on the lower end of the outer wall of the support, and a connecting key is sleeved on the bottom of the pump body. The connecting key is configured to cooperate with the suction nozzle.

[0007] Preferably, both the nozzle and the connecting key are supported by silicone material.

[0008] Preferably, the circuit board assembly includes an upper board and a lower board, the surface of the upper board is provided with a first module, a second module, a third module, a fourth module and a fifth module, and the surface of the lower board is provided with a sixth module and a seventh module; The first module is responsible for charging, the second module is the main control part, responsible for the calculation and driving work, the third module is used for charging detection and control, the fourth module is the sensor part, used for air pressure detection and data transmission to the main control, the fifth module is responsible for transmitting information to the screen, the sixth module is responsible for powering on and off, and the seventh module is the display part, used for powering on / off and displaying the charging status light.

[0009] Preferably, the side of the housing has a mounting hole, and the switch button is located in the mounting hole.

[0010] Furthermore, the outer wall of the outer shell has two symmetrically arranged grip grooves, which are elliptical and concave, and the inner wall of the grip grooves is provided with anti-slip stripes.

[0011] Preferably, the lower end of the outer wall of the base is provided with a plurality of spaced sealing rings, the upper end of the inner wall of the nozzle is provided with a plurality of sealing grooves, the sealing rings and the sealing grooves are inserted into each other, and the lower end of the inside of the nozzle is provided with a plurality of air inlets.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, through the vacuum pump body, nozzle, grip groove, anti-slip stripes and circuit board assembly, can reduce the overall size of the vacuum pump, making it easier for operators to hold and operate. At the same time, it increases the grip tightness between the body and the operator, improving the stability of use. In addition, the overall pump body can be adjusted for multiple suction levels, improving the versatility of the vacuum pump. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 In this utility model Figure 2 A partial sectional view; Figure 4 This is a schematic diagram of the upper plate of this utility model; Figure 5 This is a schematic diagram of the lower plate of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Vacuum pump body; 2. Outer shell; 3. Screen; 4. Circuit board assembly; 5. Battery; 6. Pump body; 7. Support; 8. Base; 9. Nozzle; 10. Switch button; 11. Connection button; 12. Upper plate; 13. Lower plate; 14. First module; 15. Second module; 16. Third module; 17. Fourth module; 18. Fifth module; 19. Sixth module; 20. Seventh module; 21. Mounting hole; 22. Grip groove; 23. Anti-slip stripes; 24. Sealing ring; 25. Sealing groove; 26. Air inlet; 27. Charging port. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model discloses an electric vacuum pump.

[0018] This utility model provides, for example Figure 1-5 The electric vacuum pump shown includes a vacuum pump body 1, which comprises a housing 2, a screen 3, a circuit board assembly 4, a battery 5, a pump body 6, a support 7, a base 8, and a suction nozzle 9. The screen 3 has three status interfaces: standby, pumping, and charging. It allows touch selection of four pressure levels: 0-20KP, 20KP-40KP, 40KP-60KP, and 60KP-80KP. It displays battery level, pumping time, and HPA working pressure, and prevents accidental touches on other levels while a single level is in operation. The outer wall of the housing 2 has two symmetrically arranged grip grooves 22, which are elliptical and concave. The inner wall of the grip grooves 22 has anti-slip stripes 23. The screen 3 is located on the upper inner wall of the housing 2. The housing 2 is snapped into the support 7 and is located inside the housing 2. The battery 5 and pump body are also present. All 6 are located inside the support 7. The circuit board assembly 4 is located on top of the battery 5 and the pump body 6. The battery 5 is a single 3.7V 18650 battery. The pump body 6 is a 3.7V vacuum pump (specification "motor DC3.7V 6600rpm--B1XM model", voltage range 2.2-5V), and is electrically connected with the battery 5, the pump body 6 and the screen 3. The side of the housing 2 is provided with a switch button 10. The side of the housing 2 is provided with a mounting hole 21. The switch button 10 is located in the mounting hole 21. The switch button 10 is electrically connected with the circuit board assembly 4. The upper side of the housing 2 is provided with a charging port 27. The circuit board assembly 4 is a circular PCB board. When the switch button 10 is charging, the LED breathing light flashes. When the power is low, the light flashes red. The device does not work when charging. It will automatically shut down after 3 minutes of idle or no pressure detection. The suction nozzle 9 is sleeved on the lower end of the outer wall of the support 7. The bottom of the pump body 6 is fitted with a connecting key 11, which is matched with the suction nozzle 9. Both the suction nozzle 9 and the connecting key 11 are supported by silicone material. The lower end of the outer wall of the base 8 is provided with multiple spaced sealing rings 24. The upper end of the inner wall of the suction nozzle 9 is provided with multiple sealing grooves 25. The sealing rings 24 and the sealing grooves 25 are inserted and matched. The lower end of the inside of the suction nozzle 9 is provided with multiple air inlets 26.

[0019] In order to enable multi-level suction adjustment of the vacuum pump and improve the versatility of the vacuum pump, such as... Figure 2 and Figure 4-5 As shown, the circuit board assembly 4 includes an upper plate 12 and a lower plate 13. The surface of the upper plate 12 is provided with a first module 14, a second module 15, a third module 16, a fourth module 17 and a fifth module 18, and the surface of the lower plate 13 is provided with a sixth module 19 and a seventh module 20. The first module 14 is responsible for charging; the second module 15 is the main control unit, responsible for calculation and drive operations; the third module 16 is used for charging detection and control; the fourth module 17 is the sensor unit, used for air pressure verification and data transmission to the main control unit; the fifth module 18 is responsible for transmitting information to the screen 3; the sixth module 19 is responsible for power on / off; and the seventh module 20 is the display unit, used for power on / off and charging status indicator lighting.

[0020] Working principle: First, the battery 5 is charged through the charging port 27 on the upper side of the outer shell 2. During the charging process, the first module 14 of the circuit board assembly 4 is responsible for charging management, the third module 16 detects the charging status in real time, and the seventh module 20 controls the LED light of the switch button 10 to flash in a breathing light state. At the same time, the screen 3 displays the charging status interface to show the charging progress. In this state, the device cannot work to avoid damage to the components due to accidental operation during charging. When vacuuming containers such as food storage boxes is required, the operator holds the grip groove 22 on the outer wall of the outer shell 2. The oval concave grip groove 22, together with the wavy anti-slip texture and the anti-slip stripes 23 on the inner wall, can fit the hand tightly, prevent the equipment from slipping, and improve the grip stability. Press the switch button 10 with LED light, the sixth module 19 receives the power-on / off signal and transmits it to the second module 15 (main control module), the equipment starts up, the screen 3 enters the standby state interface, and displays the current battery level 5.

[0021] Based on the required vacuum level of the container, touch screen 3 to select the corresponding pressure level (0-20KP, 20KP-40KP, 40KP-60KP, 60KP-80KP). After the level is selected, the other three levels automatically enter the anti-accidental touch state to avoid accidental changes to parameters. After the selection is completed, the second module 15 receives the level signal and drives the pump body 6 to start. At the same time, screen 3 switches to the air pumping status interface and starts to display the pumping time and real-time HPA working pressure. The pump body 6 generates negative pressure when it operates. The gas in the container enters the equipment through multiple air inlets 26 at the lower end of the nozzle 9. The nozzle 9 is made of silicone, which can fit tightly against the surface of the container. The sealing ring 24 at the lower end of the outer wall of the base 8 is inserted into the sealing groove 25 at the upper end of the inner wall of the nozzle 9. The connecting key 11 is also made of silicone. All three together ensure the sealing during the gas extraction process and prevent gas leakage from affecting the vacuuming efficiency. During the vacuuming process, the fourth module 17 (pressure sensor GZP6859D, operating voltage 2.5-5.5V) of the circuit board assembly 4 detects the air pressure inside the equipment and container in real time, and transmits the detected air pressure data to the second module 15. The second module 15 calculates and analyzes the data. When the air pressure reaches the maximum value of the selected pressure level (e.g., when the -20KP level is selected, the air pressure is evacuated to 20KP), the second module 15 controls the pump body 6 to stop operating, thus completing the vacuuming operation. After vacuuming is completed, if the equipment is no longer used and no pressure change is detected, the second module 15 will trigger an automatic shutdown program after 3 minutes, and the equipment will be shut down through the sixth module 19 to save battery power. If you need to use it again, simply press the switch button 10 again. When the battery power is low, the LED light on the switch button 10 will flash red, and the screen 3 will also display a low battery warning to remind the operator to charge the equipment through the charging port 27 in time.

[0022] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electric vacuum pump, comprising a vacuum pump body (1), characterized in that, The vacuum pump body (1) includes a shell (2), a screen (3), a circuit board assembly (4), a battery (5), a pump body (6), a support (7), a base (8), and a suction nozzle (9). The screen (3) is located on the upper inner wall of the shell (2). The shell (2) is snapped into the support (7) and located inside the shell (2). The battery (5) and the pump body (6) are both located inside the support (7). The circuit board assembly (4) is located on top of the battery (5) and the pump body (6) and is electrically connected to the battery (5), the pump body (6), and the screen (3). A switch button (10) is provided on the side of the shell (2). The switch button (10) is electrically connected to the circuit board assembly (4). A charging port (27) is provided on the upper side of the shell (2). The suction nozzle (9) is sleeved on the lower end of the outer wall of the support (7), and the bottom of the pump body (6) is sleeved with a connecting key (11), which is configured to cooperate with the suction nozzle (9).

2. The electric vacuum pump according to claim 1, characterized in that, Both the suction nozzle (9) and the connecting key (11) are supported by silicone material.

3. The electric vacuum pump according to claim 1, characterized in that, The circuit board assembly (4) includes an upper plate (12) and a lower plate (13). The surface of the upper plate (12) is provided with a first module (14), a second module (15), a third module (16), a fourth module (17) and a fifth module (18). The surface of the lower plate (13) is provided with a sixth module (19) and a seventh module (20). The first module (14) is responsible for charging, the second module (15) is the main control part, responsible for the calculation part and drive work, the third module (16) is used for charging detection and control, the fourth module (17) is the sensor part, used for air pressure detection and data transmission to the main control, the fifth module (18) is responsible for transmitting information with the screen (3), the sixth module (19) is responsible for powering on and off, and the seventh module (20) is the display part, used for powering on and off and displaying the charging light status.

4. The electric vacuum pump according to claim 1, characterized in that, The outer casing (2) has a mounting hole (21) on its side, and the switch button (10) is located in the mounting hole (21).

5. The electric vacuum pump according to claim 1, characterized in that, The outer wall of the outer shell (2) has two symmetrically arranged grip grooves (22), the grip grooves (22) are arranged in an elliptical concave shape, and the inner wall of the grip grooves (22) is provided with anti-slip stripes (23).

6. The electric vacuum pump according to claim 1, characterized in that, The lower end of the outer wall of the base (8) is provided with a plurality of spaced sealing rings (24), the upper end of the inner wall of the nozzle (9) is provided with a plurality of sealing grooves (25), the sealing rings (24) and the sealing grooves (25) are inserted into each other, and the lower end of the inside of the nozzle (9) is provided with a plurality of air inlets (26).

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