A hand-held vacuum cleaner with detectable pressure

Abstract

The utility model relates to vacuum machine technical field discloses a hand -held vacuum machine of pressure can be detected, including the casing, the casing bottom is equipped with the air outlet, the casing top is fixedly connected with the top, the top top front is equipped with the mounting groove, the top top rear is equipped with a plurality of through -holes, the circuit board is fixedly connected in the casing upper side, and the circuit board sets up below the top, the circuit board bottom is fixedly connected with negative pressure sensor, the casing lower side is fixedly connected with the connecting post, the air -exhausting cylinder is fixedly connected in the lower side of the casing and penetrates, and the air -exhausting cylinder inside is communicated with the air outlet, the air -exhausting cylinder left side is provided with the electromagnetic valve, the electromagnetic valve right side is fixedly connected with the second trachea. In the utility model, the negative pressure sensor will identify the negative pressure value of the area where the air outlet is, and according to the different negative pressure value identified, different display is carried out on the vacuum degree display indicator light.

Description

Technical Field

[0001] This utility model relates to the field of vacuum machine technology, specifically a handheld vacuum machine capable of detecting pressure. Background Technology

[0002] A vacuum machine is a device that removes air from a container or package to create a localized vacuum environment, thereby achieving functions such as preservation, moisture prevention, and oxidation prevention. Its core function is to "remove air and lock in the state".

[0003] Most existing vacuum machines cannot detect or display the vacuum level during operation, and the machine is difficult to remove after operation due to pressure difference, resulting in poor performance.

[0004] To address the aforementioned issues, a handheld vacuum machine capable of detecting pressure is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a handheld vacuum machine that can detect pressure, which solves the problems in the prior art where the vacuum level cannot be detected and displayed during operation, and where the machine is difficult to remove after operation due to pressure difference, resulting in poor performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a handheld vacuum pump capable of detecting pressure, comprising a housing, an air extraction port at the bottom of the housing, a top cover fixedly connected to the top of the housing, a mounting groove at the front of the top of the top cover, and multiple through holes at the rear of the top of the top cover, a circuit board fixedly connected to the upper part of the housing and positioned below the top cover, a negative pressure sensor fixedly connected to the bottom of the circuit board, a connecting post fixedly connected to the lower part of the housing, an air extraction cylinder penetrating and fixedly connected to the lower part of the housing and communicating with the air extraction port, a solenoid valve on the left side of the air extraction cylinder, a second air pipe fixedly connected to the right side of the solenoid valve and penetrating and fixedly connected to the air extraction cylinder, an air pump at the rear of the air extraction cylinder, a digital tube fixedly connected to the top of the circuit board, a battery at the front of the air extraction cylinder, and a vacuum detection button on the right side of the housing.

[0007] By adopting the above technical solution, the negative pressure sensor will identify the negative pressure value in the area where the air extraction port is located, and will display different values ​​on the vacuum indicator light according to the identified negative pressure values.

[0008] As a further description of the above technical solution: an installation sleeve is provided on the outside of the air extraction port, and the installation sleeve is fixedly connected to the bottom of the housing.

[0009] By adopting the above technical solution, the suction port of the target container such as a vacuum bag can be easily connected to the suction port at the bottom of the shell by means of the installation sleeve.

[0010] As a further description of the above technical solution: a power display lens is fixedly connected in the mounting slot, and the power display lens is positioned above the digital tube.

[0011] By adopting the above technical solution, the power display lens is located directly above the digital tube, which can better project the power display light of the digital tube, helping users to read it more easily.

[0012] As a further description of the above technical solution: a display indicator light is fixedly connected inside the through hole, and the bottom of the display indicator light is connected to the circuit board.

[0013] By adopting the above technical solution, there are three vacuum indicator lights, each corresponding to a different vacuum level. The corresponding indicator light will illuminate according to the vacuum level.

[0014] As a further description of the above technical solution: a first air tube is fixedly connected to the top of the connecting column, and the end of the first air tube is fixedly connected to a negative pressure sensor.

[0015] By adopting the above technical solution, the negative pressure sensor and the connecting column below it can be sealed together through the first air tube.

[0016] As a further description of the above technical solution: the connecting column has a through-hole with a ventilation hole, which is connected to the air extraction port and the first air pipe.

[0017] By adopting the above technical solution, the negative pressure at the air extraction port is transmitted to the first air tube through the vent hole in the connecting column, and finally to the negative pressure sensor at the bottom of the circuit board.

[0018] As a further description of the above technical solution: the input end of the air pump is fixedly connected to a third air pipe, and the end of the third air pipe passes through and is fixedly connected to the air extraction cylinder.

[0019] By adopting the above technical solution, air can be easily drawn out through the third air tube.

[0020] As a further description of the above technical solution: a charging port is provided on the left side of the housing.

[0021] By adopting the above technical solution, the device can be conveniently charged through the charging port.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a handheld vacuum pump capable of detecting pressure. The negative pressure sensor identifies the negative pressure value in the area where the suction port is located, and displays different values ​​on the vacuum indicator lights according to the different negative pressure values ​​detected. There are three vacuum indicator lights, each corresponding to a different vacuum level. The corresponding indicator light will light up according to the vacuum level. The machine can also display the battery level via a digital tube. When the vacuuming is completed, the solenoid valve opens, creating a passage for air and restoring the suction port to standard atmospheric pressure. This allows the vacuum pump to be easily removed from the evacuated container, resulting in better performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an exploded view of the top cover of this utility model; Figure 4 This is a bottom-view perspective view of the present invention.

[0024] In the diagram: 1. Housing; 2. Air extraction port; 3. Mounting sleeve; 4. Top cover; 5. Mounting slot; 6. Power display lens; 7. Through hole; 8. Indicator light; 9. Circuit board; 10. Negative pressure sensor; 11. Connecting post; 12. First air pipe; 13. Air extraction cylinder; 14. Solenoid valve; 15. Second air pipe; 16. Third air pipe; 17. Charging port; 18. Digital tube; 19. Vent hole; 20. Battery; 21. Vacuum degree detection button; 22. Air pump. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0027] Reference Figure 1-4This utility model discloses a handheld vacuum pump capable of detecting pressure, comprising a housing 1, with an air extraction port 2 at the bottom of the housing 1 for easy connection to a container to be vacuumed. A top cover 4 is fixedly connected to the top of the housing 1 by screws. A mounting groove 5 is provided at the front of the top of the top cover 4 for easy installation. Multiple through holes 7 are provided at the rear of the top of the top cover 4. A circuit board 9 is fixedly connected to the upper part of the housing 1, and the circuit board 9 is located below the top cover 4. A negative pressure sensor 10 is fixedly connected to the bottom of the circuit board 9, which can detect negative pressure. A connecting post 11 is fixedly connected to the lower part of the housing 1. An air extraction cylinder 13 is passed through and fixedly connected to the lower part of the housing 1, and the interior of the air extraction cylinder 13 communicates with the air extraction port 2. The air extraction cylinder 13 is hollow to facilitate vacuuming. A solenoid valve 14 is located on the left side of the vacuum pump 13. This valve allows air to pass through, restoring the suction port 2 to standard atmospheric pressure. A second air pipe 15 is fixedly connected to the right side of the solenoid valve 14, passing through and being fixedly connected to the vacuum pump 13. The second air pipe 15 serves as a connection. An air pump 22 is located at the rear of the vacuum pump 13 for convenient air extraction. A digital display 18 is fixedly connected to the top of the circuit board 9, displaying the corresponding battery level. A battery 20 is located at the front of the vacuum pump 13, and a vacuum detection button 21 is located on the right side of the housing 1, which triggers the circuit board 9 to control the negative pressure sensor 10 for real-time detection.

[0028] Reference Figure 1-4An installation sleeve 3 is provided on the outside of the air extraction port 2, and the installation sleeve 3 is fixedly connected to the bottom of the housing 1. The installation sleeve 3 facilitates the docking of the air extraction port 2 of the target container such as the vacuum bag with the air extraction port 2 at the bottom of the housing 1. A power display lens 6 is fixedly connected in the mounting groove 5, and the power display lens 6 is positioned above the digital tube 18. The power display lens 6 is located directly above the digital tube 18, which can better project the power display light of the digital tube 18, helping the user to read it better. An indicator light 8 is fixedly connected in the through hole 7, and the bottom of the indicator light 8 is connected to the circuit board 9. There are three vacuum degree indicator lights 8, which correspond to three different vacuum degree gradients. The corresponding indicator light will light up according to the vacuum degree gradient. A first air pipe 12 is fixedly connected to the top of the connecting post 11, and the end of the first air pipe 12 is fixedly connected to the negative pressure sensor 10. The first air pipe 12 can seal the negative pressure sensor 10 and the connecting post 11 below it. A vent hole 19 is provided through the connecting post 11, communicating with the air extraction port 2 and the first air pipe 12. The negative pressure at the air extraction port 2 is conducted through the vent hole 19 in the connecting post 11 to the first air pipe 12, and finally to the negative pressure sensor 10 at the bottom of the circuit board 9. A third air pipe 16 is fixedly connected to the input end of the air pump 22, and the end of the third air pipe 16 is connected through and fixedly connected to the air extraction cylinder 13, allowing for convenient air extraction. A charging port 17 is provided on the left side of the housing 1, facilitating charging of the device.

[0029] Working principle: In use, the suction port 2 of the target container such as a vacuum bag is connected to the suction port 2 at the bottom of the housing 1 through the mounting sleeve 3. After the suction function is started, the circuit board 9 sends a working command to the air pump 22. The air pump 22 is connected to the suction cylinder 13 through the third air pipe 16 and continuously draws air from the suction cylinder 13. Since the inside of the suction cylinder 13 is connected to the suction port 2, the air in the target container enters the suction cylinder 13 through the suction port 2. As the air pump 22 works, a negative pressure is gradually formed. The negative pressure at the suction port 2 is conducted to the first air pipe 12 through the vent hole 19 in the connecting post 11, and finally to the negative pressure sensor 10 at the bottom of the circuit board 9. The negative pressure sensor 10 converts the detected negative pressure value (vacuum degree) into an electrical signal and transmits it to the circuit board 9 for data processing. Pressing the vacuum degree detection button 21 on the right side of the housing 1 can trigger the circuit board 9 to control the negative pressure sensor 10 to perform real-time detection. Circuit board 9 displays the processed vacuum level data via three indicator lights 8 on top, each corresponding to a different vacuum level gradient. The indicator light illuminates according to the vacuum level gradient. During vacuuming, solenoid valve 14 remains closed to ensure a sealed airflow. After vacuuming, the suction port 2 and the evacuated container are sealed and under negative pressure. Solenoid valve 14 opens, opening the airflow path and restoring the suction port 2 to standard atmospheric pressure, allowing the vacuum machine to be easily removed from the evacuated container. Battery 20 is the core power source for the device, and its output voltage varies with the remaining charge (higher voltage when fully charged, lower voltage when low). Circuit board 9 integrates a voltage detection module (not shown in the diagram) (such as voltage divider resistors and an ADC chip), which collects the output voltage signal from battery 20 in real time and converts it into an electrical signal recognizable by circuit board 9. The core controller (such as an MCU) on circuit board 9 processes the collected voltage signals: It pre-sets corresponding thresholds for voltage and battery level (e.g., voltage ≥ 3.7V corresponds to "fully charged," 3.2V-3.7V corresponds to "medium charge," and ≤ 3.2V corresponds to "low charge"). The controller compares the real-time detected voltage value with the preset thresholds to determine the remaining battery level of the battery 20. Based on the determined battery level, the controller sends a control signal to the digital tube 18, driving it to display the corresponding battery information (e.g., displaying "100%" or a full charge symbol when fully charged, and "20%" or a low charge symbol when low). The digital tube 18 is mounted on top of circuit board 9, and the battery level display lens 6 above it protects the digital tube 18 and optimizes the display viewing angle, allowing the user to clearly see the battery status.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A handheld vacuum machine capable of detecting pressure, comprising a housing (1), characterized in that: The bottom of the housing (1) is provided with an air extraction port (2), the top of the housing (1) is fixedly connected with a top cover (4), the top of the top cover (4) is provided with an installation groove (5) at the front, and the top of the top cover (4) is provided with multiple through holes (7) at the rear. The upper part of the housing (1) is fixedly connected with a circuit board (9), and the circuit board (9) is located below the top cover (4). The bottom of the circuit board (9) is fixedly connected with a negative pressure sensor (10). The lower part of the housing (1) is fixedly connected with a connecting post (11). The lower part of the housing (1) is connected with a suction port. An air pump (13) is provided, and the inside of the air pump (13) is connected to the air extraction port (2). A solenoid valve (14) is provided on the left side of the air pump (13). A second air pipe (15) is fixedly connected to the right side of the solenoid valve (14). The second air pipe (15) passes through and is fixedly connected to the air pump (13). An air pump (22) is provided at the rear of the air pump (13). A digital tube (18) is fixedly connected to the top of the circuit board (9). A storage battery (20) is provided in front of the air pump (13). A vacuum detection button (21) is provided on the right side of the housing (1).

2. The handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: An installation sleeve (3) is provided on the outside of the air extraction port (2), and the installation sleeve (3) is fixedly connected to the bottom of the housing (1).

3. The handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: The mounting slot (5) is fixedly connected to a power display lens (6), and the power display lens (6) is positioned above the digital tube (18).

4. A handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: An indicator light (8) is fixedly connected inside the through hole (7), and the bottom of the indicator light (8) is connected to the circuit board (9).

5. A handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: The top of the connecting column (11) is fixedly connected to the first air tube (12), and the end of the first air tube (12) is fixedly connected to the negative pressure sensor (10).

6. A handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: The connecting column (11) has a through-hole (19) which is connected to the air extraction port (2) and the first air pipe (12).

7. A handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: The input end of the air pump (22) is fixedly connected to a third air pipe (16), and the end of the third air pipe (16) passes through and is fixedly connected to the air extraction cylinder (13).

8. A handheld vacuum machine capable of detecting pressure according to claim 1, characterized in that: A charging port (17) is provided on the left side of the housing (1).

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