Compact-size electric air pump for sprayer

Abstract

The utility model discloses a compact-size electric air pump for a sprayer, which comprises an assembly seat, the assembly seat is connected with an opening of a barrel body, and a pressure sensor component and an air pump component are integrated in the assembly seat; the pressure sensor assembly comprises a PCB main control board and a pressure detection chip, and the PCB main control board is connected with the pressure detection chip; the pressure detection chip is fixedly arranged on the air pump assembly, and the collecting end of the pressure detection chip communicates with the inner cavity of the barrel body. According to the utility model, a pressure acquisition structure is directly integrated on the air pump, the pressure change value is monitored in real time after sensing pressure data is automatically set, a traditional complex pipeline structure consisting of components such as a circuit board and a three-way pipe is replaced, the occupied space is avoided, and the structure is effectively simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, in particular to an electric air pump for a sprayer with a compact volume. Background Art

[0002] A sprayer is short for spraying equipment. It uses the siphon effect to turn liquid medicine or other liquids into a mist and evenly spray them onto other objects. It consists of a device for compressing air, a thin tube, a nozzle, etc. It is also a common spraying tool that can be used for air humidification, watering plants, and spraying disinfectant liquids and pesticides. Due to its convenient use and suitable volume, it is widely used in places such as families, farms, units, and schools.

[0003] Generally, the electric air pump of a sprayer needs to use a pressure collector to collect the air pressure in the barrel in real time, so as to control the air pressure in the barrel by the electric air pump. However, the design of traditional pressure collectors has a complex structure, usually including components such as a circuit board and a three-way pipe, and often has a relatively complex pipeline structure, so it occupies a large space, which leads to a large overall volume of the sprayer and brings inconvenience to use and storage.

[0004] Therefore, how to solve the deficiencies of the above existing technologies has become the research topic of the present utility model. Content of the Utility Model

[0005] The purpose of the present utility model is to provide an electric air pump for a sprayer with a compact volume.

[0006] To achieve the above purpose, the technical solution adopted by the present utility model is: an electric air pump for a sprayer with a compact volume, including an assembly seat, and the assembly seat is connected to the opening of a barrel. A pressure sensor assembly and an air pump assembly are integrated inside the assembly seat. The air pump assembly is arranged at the opening of the barrel and acts on the inner cavity of the barrel. The pressure sensor assembly includes a PCB main control board and a pressure detection chip that are electrically connected. Among them, the pressure detection chip is fixed on the air pump assembly, and the acquisition end of the pressure detection chip is communicated with the inner cavity of the barrel.

[0007] A further technical solution is that the air pump assembly includes a motor and a cylinder body. The upper end of the cylinder body is connected to the motor through a first connection cover. The lower end of the cylinder body is connected to a connection head chamber. The connection head chamber passes through the assembly seat and is hermetically assembled with the barrel through a second connection cover. Air holes are opened on the second connection cover so that the air pump can inject air into the barrel. A positioning area for positioning the pressure detection chip is provided on the outer side wall of the connection head chamber.

[0008] Further technical solution: A key switch is provided on the main PCB control board, and a charging interface is provided on one side of the main PCB control board. The main PCB control board is connected to the pressure detection chip through a pressure detection chip connection line. A quick-connect plug for quick connection and disconnection is also provided on the pressure detection chip connection line.

[0009] Further technical solution: An umbrella valve for preventing the liquid in the barrel from flowing back to the air pump assembly is also provided between the air pump assembly and the mounting seat. That is, the umbrella valve is a one-way valve. When the air pump assembly works, the umbrella valve is pushed open by the airflow to pressurize the inside of the barrel.

[0010] Further technical solution: A right cover and a left cover are provided on the mounting seat. The right cover and the left cover are buckled along the central longitudinal axis to form a cover part. A battery compartment for positioning the battery is formed inside the cover part. A power switch is provided on the cover part, and the power switch acts on the battery provided inside the battery compartment.

[0011] Further technical solution: A light guide column is also provided inside the battery compartment.

[0012] Regarding the use of "first", "second", etc. in this article, it does not particularly refer to the meaning of order or sequence, nor is it used to limit this case. It is only used to distinguish components or operations described with the same technical terms.

[0013] Regarding the use of "connected" or "positioned" in this article, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other. It can also refer to two or more components or devices operating or acting on each other.

[0014] Regarding the use of "comprising", "including", "having", etc. in this article, they are all open-ended terms, that is, they mean including but not limited to.

[0015] Regarding the terms used in this article, unless otherwise specified, they generally have their ordinary meanings in this field, in the context of this case, and in the special context. Some terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of this case.

[0016] Regarding the use of "front", "rear", "upper", "lower", "left", "right", etc. in this article, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures, and are not used to limit the protection scope of this case and the specific direction during actual implementation.

[0017] The working principle and advantages of the present utility model are as follows:

[0018] The utility model discloses a compact electric air pump for a sprayer. By directly integrating a pressure detection chip on an air pump assembly, on the one hand, it can be as close to a barrel as possible, and the accuracy and reliability of its detection can be ensured by directly collecting the gas pressure value in the barrel. On the other hand, compared with the prior art, the utility model omits the traditional collection structure composed of components such as a circuit board and a three-way pipe, as well as complex pipelines, greatly reduces the volume, reduces the space occupation requirement, and thus effectively simplifies the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model;

[0020] Attached Figure 2 An exploded view of an embodiment of the utility model;

[0021] Attached Figure 3 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0022] Attached Figure 4 This is a schematic diagram of the structure of the pressure sensor assembly and the air pump assembly in an integrated state according to an embodiment of the utility model;

[0023] Attached Figure 5 This is a schematic diagram of the structure of the air pump assembly of the utility model embodiment;

[0024] Attached Figure 6 It is a schematic structural diagram of the pressure sensor assembly according to an embodiment of the utility model.

[0025] In the above drawings: 1. Assembly seat; 2. Light guide column; 3. Dust plug; 4. Right cover; 5. First fastener; 6. Left cover; 7. Battery; 8. Pressure sensor assembly; 81. PCB main control board; 82. Key switch; 83. Charging port; 84. Pressure detection chip connection line; 85. Quick-connect plug; 86. Pressure detection chip; 9. Welding wire; 10. Second fastener; 11. Positioning plate; 12. Pressure detection chip sealing ring; 13. Air pump assembly; 131. Motor; 132. First connection cover; 133. Cylinder; 134. Connector chamber; 135. Pressure detection chip placement area; 136. Second connection cover; 137. Sealing groove; 14. Air pump sealing ring; 15. Umbrella valve; 16. Main power switch; 17. Assembly seat sealing ring; 18. Data cable. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Embodiment: The present case will be clearly described below with reference to the drawings and detailed description. After understanding the embodiments of the present case, any person skilled in the art can make changes and modifications to the technology taught by the present case without departing from the spirit and scope of the present case.

[0028] The terms used herein are only for describing specific embodiments and are not intended to limit the present case. Singular forms such as "a", "this", "this", "the present", and "the" also include plural forms as used herein.

[0029] See the attached Figure 1-4 As shown, an electric air pump for a compact sprayer according to this embodiment includes an assembly seat 1. An assembly seat sealing ring 17 is sleeved on the assembly seat 1. The assembly seat 1 is connected to the opening of a barrel body. The outer side wall of the assembly seat 1 is provided with an external thread for rotatably engaging with the internal thread part of the opening of the barrel body. A pressure sensor assembly 8 and an air pump assembly 13 are integrally arranged inside the assembly seat 1. The pressure sensor assembly 8 and the air pump assembly 13 are also fixedly connected by a welding wire 9.

[0030] See the attached Figure 5 As shown, the pressure sensor assembly 8 includes a PCB main control board 81 and a pressure detection chip 86. The PCB main control board 81 is connected to the pressure detection chip 86 through a pressure detection chip connection wire 84. A pressure detection chip sealing ring 12 for self-sealing is also provided on the pressure detection chip 86. The function of the sealing ring is to provide a platform for screwing the air pump and to seal with the control chip. When the air pump is working, there will be no leakage at the pressure chip.

[0031] The pressure detection chip 86 is fixedly arranged on the air pump assembly 13 through a positioning plate 11. The positioning plate 11 is fixedly installed on the air pump assembly 13 through several second fasteners 10 (the second fasteners 10 are M1.8*8 cross-round head shoulder self-tapping screws SUS304). And the acquisition end of the pressure detection chip 86 is communicated with the inner cavity of the barrel body so as to collect the air pressure in the barrel. Once the collected air pressure value is lower than the set value, a signal is sent through the PCB main control board 81 to make the electric air pump assembly 13 start working.

[0032] A key switch 82 is provided on the PCB main control board 81 for controlling the start and stop of the air pump assembly 13. A charging interface 83 is provided on one side of the PCB main control board 81. The battery 7 is a rechargeable battery.

[0033] The charging interface 83 is electrically connected to the battery 7 in the assembly base 1 through a power cord, and is used to charge the battery 7 through an external power source, so as to realize the mobile use of the sprayer. Inside the battery compartment for installing the battery 7, there is also a light guide column 2, which is suitable for assisting the LDE lamp on the circuit board of the pressure sensor assembly 8 to reflect the light of the LDE lamp to enhance the light source.

[0034] The pressure detection chip connecting wire 84 is provided with a quick-connect plug 85 for quick connection and disconnection. When it is necessary to frequently replace or adjust the connection of the pressure detection chip connecting wire 84, the quick-connect plug 85 can be used to quickly complete the required operation, effectively saving time and improving the maintenance efficiency.

[0035] See the appendix Figure 6 As shown, the air pump assembly 13 includes a cylinder block 133. The upper end of the cylinder block 133 is connected to the motor 131 through a first connection cover 132; the lower end of the cylinder block 133 is connected to the connection head chamber 134 through a second connection cover 136. The second connection cover 136 is provided with air holes for the air pump to inject air into the barrel body. The second connection cover 136 is provided with a sealing groove 137, and an air pump sealing ring 14 is installed through the sealing groove 137; on the outer side wall of the connection head chamber 134, there is a positioning area 135 for the pressure detection chip 86.

[0036] In addition, between the air pump assembly 13 and the assembly base 1, there is also a umbrella valve 15 for blocking the liquid in the barrel when the barrel is inverted. The umbrella valve 15 is connected to the 161 base, and there is a contact surface at the bottom to prevent water. It can prevent water from entering and enhance the air pumping effect of the air pump assembly 13, effectively improving the overall air pumping efficiency of the air pump assembly 13.

[0037] On the assembly base 1, there are a right cover body 4 and a left cover body 6. The right cover body 4 and the left cover body 6 are buckled along the central longitudinal axis to form a cover body part, and they are assembled in place through several first fasteners 5 (the first fastener 5 is an M3*12*7 cross round head shoulder self-tapping screw SUS304); inside the cover body part, there is a battery compartment for positioning the battery 7. On the cover body part, there is a main power switch 16, and the main power switch 16 acts on the battery 7 arranged inside the battery compartment; on the side of the cover body part, there is a charging hole (this charging hole is a single-section charging hole, suitable for charging 18650 lithium batteries), and a dust-proof plug 3 is detachably connected to the charging hole.

[0038] The working principle of the present utility model:

[0039] The outer peripheral surface of the assembly base 1 has an external thread, which is matched with the internal thread structure on the opening of the barrel to be installed, so that the integrated pressure sensor assembly 8 and the cover part of the air pump assembly 13 are hermetically connected to the barrel. Press the main power switch 16, and the electrical signal for starting pressurization is transmitted to the battery 7. The battery 7 supplies power to trigger the air pump assembly 13 to perform the pressurization operation. The pressure detection chip 86 on the pressure sensor assembly 8 is electrically connected to the PCB main control board 81. The pressure detection chip 86 is arranged in the pressure detection chip placement area and is communicated with the connector chamber 134 of the air pump assembly 13. Set the pressure value of the pressure detection chip 86, and monitor the pressure change of the air pump assembly 13 in real time corresponding to the allowable pressurization fluctuation pressure value in the barrel. Just use the key switch 82 to connect or disconnect the operation of the motor 131.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electric air pump for a sprayer with a compact volume, characterized in that: It includes an assembly seat (1), and the assembly seat (1) is connected to the opening of a barrel body; A pressure sensor assembly (8) and an air pump assembly (13) are integrated inside the assembly seat (1). The air pump assembly (13) is arranged at the opening of the barrel body and acts on the inner cavity of the barrel body; The pressure sensor assembly (8) includes a PCB main control board (81) and a pressure detection chip (86) which are electrically connected; Among them, the pressure detection chip (86) is fixedly arranged on the air pump assembly (13), and the acquisition end of the pressure detection chip (86) is communicated with the inner cavity of the barrel body.

2. The electric air pump for a sprayer with a compact volume according to claim 1, wherein: The air pump assembly (13) includes a motor (131) and a cylinder block (133); The upper end of the cylinder block (133) is connected to the motor (131) through a first connection cover (132); The lower end of the cylinder block (133) is connected to a connector chamber (134). The connector chamber (134) passes through the assembly seat (1) and is hermetically assembled with the barrel body through a second connection cover (136); A positioning area (135) for positioning the pressure detection chip (86) is provided on the outer side wall of the connector chamber (134).

3. An electric air pump for a sprayer with a compact volume according to claim 1, characterized in that: A key switch (82) is provided on the PCB main control board (81), and a charging interface (83) is provided on one side of the PCB main control board (81); The PCB main control board (81) is connected to the pressure detection chip (86) through a pressure detection chip connection wire (84); A quick-connect plug (85) for quick connection and disconnection is also provided on the pressure detection chip connection wire (84).

4. An electric air pump for a sprayer with a compact volume according to claim 2, characterized in that: A sealing ring (14) is provided on the second connection cover (136) to realize the hermetic assembly of the air pump assembly (13) and the barrel body.

5. An electric air pump for a sprayer with a compact volume according to claim 1, characterized in that: An umbrella valve (15) for preventing the liquid in the barrel from flowing back to the air pump assembly is also provided between the air pump assembly (13) and the assembly seat (1).

6. An electric air pump for a sprayer with a compact volume according to claim 1, characterized in that: A right cover body (4) and a left cover body (6) which are assembled and combined in the horizontal direction are provided on the assembly seat (1). The two are buckled along the longitudinal center line to form a cover body part, and a battery compartment for positioning a battery (7) is formed inside the cover body part; A main power switch (16) is provided on the cover body part, and the main power switch (16) acts on the battery (7) arranged inside the battery compartment.

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