Manual pressing gear pump and soap dispenser

Abstract

The manual pressing gear pump comprises a gear box and a motor, a driving gear and a driven gear which are meshed with each other are arranged in the gear box, the gear box is provided with an installation groove used for containing the driving gear and the driven gear, and the motor is used for driving the driving gear to rotate. The gearbox is provided with a liquid inlet channel and a liquid outlet channel which are communicated with the mounting groove, the air bag assembly is provided with a liquid passing channel communicated with the mounting groove, the liquid inlet channel is provided with a first one-way valve, the liquid outlet channel is provided with a second one-way valve, and when the air bag assembly is pressed, the first one-way valve is in a closed state; when the second one-way valve is in an open state, liquid is discharged from the liquid outlet; when the air bag assembly rebounds, the first one-way valve is in an open state, the second one-way valve is in a closed state, and liquid enters the air bag assembly from the liquid passing channel. By pressing the air bag in a reciprocating mode, the problem that liquid needs to be injected before a traditional gear pump is used is solved, and the gear manufacturing precision requirement is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a manual pressing gear pump and a soap dispenser. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure. A gear pump consists of two enclosed spaces formed by two gears, a pump body, and front and rear covers. When the gears rotate, the volume of the space on the side where the gears are disengaged increases from small to large, creating a vacuum that draws liquid in. The volume of the space on the side where the gears are meshing decreases from large to small, squeezing the liquid into the pipeline. For example, Chinese patent document CN213655116U discloses a new gear pump with an integrated pressure regulation function.

[0003] The self-priming ability of a gear pump depends on the meshing accuracy and rotational speed of the gears to create the necessary vacuum to draw in liquid. Gear pumps typically use an involute or circular tooth profile, creating a pair of conjugate tooth shapes. This allows the two gears to transmit power during rotation and maintain a seal, preventing liquid from leaking through the meshing area. When there's no liquid in the pipeline, it's easy for the pump to not absorb liquid. Therefore, to achieve self-priming, it's usually necessary to prefill the gear meshing cavity with liquid beforehand. However, this prefilling process before each use makes the gear pump cumbersome to operate. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a manual pressing gear pump and a soap dispenser to solve the problems mentioned in the above background technology section.

[0005] The utility model is achieved through the following technical solutions:

[0006] A manual pressure gear pump includes a gear box and a motor, wherein the gear box is provided with a driving gear and a driven gear that mesh with each other, the gear box is provided with a mounting groove for placing the driving gear and the driven gear, the motor is used to drive the driving gear to rotate, the gear box is provided with a liquid inlet channel and a liquid outlet channel connected to the mounting groove, and also includes an airbag assembly covering the opening of the mounting groove, the airbag assembly is provided with a liquid passage connected to the mounting groove, the liquid inlet channel is provided with a first one-way valve, and the liquid outlet channel is provided with a second one-way valve.

[0007] Furthermore, the airbag assembly includes a base, a manual button and a pressure ring, the pressure ring is connected to the gear box by screws, the base blocks the mounting groove, the base and the manual button are clamped between the gear box and the pressure ring, and the manual button and the base are closed to form a pressing chamber.

[0008] Furthermore, the manual button is made of rubber.

[0009] Furthermore, a recessed portion is provided on the periphery of the manual button, and the pressure ring is provided with a pressing portion embedded in the recessed portion.

[0010] Furthermore, a sealing ring is sandwiched between the base, the pressure ring and the gear box.

[0011] Furthermore, the driving gear and the driven gear divide the mounting groove into a first half chamber and a second half chamber, the first half chamber is connected to the liquid inlet channel, the second half chamber is connected to the liquid outlet channel, and the liquid passage is connected to the first half chamber.

[0012] On the other hand, the present invention provides a soap dispenser, comprising a manual pressure gear pump as described in any one of the above items.

[0013] The beneficial effects of the utility model are as follows: a manually pressed gear pump comprises a gear box and a motor, the gear box is provided with a driving gear and a driven gear that mesh with each other, the gear box is provided with a mounting groove for placing the driving gear and the driven gear, the motor is used to drive the driving gear to rotate, the gear box is provided with a liquid inlet channel and a liquid outlet channel connected with the mounting groove, and also includes an air bag assembly covering the opening of the mounting groove, the air bag assembly is provided with a liquid passage connected with the mounting groove, the liquid inlet channel is provided with a first one-way valve, and the liquid outlet channel is provided with a second one-way valve. When the air bag assembly is pressed, the first one-way valve is in a closed state, the second one-way valve is in an open state, and the liquid is discharged to the liquid outlet; when the air bag assembly rebounds, the first one-way valve is in an open state, the second one-way valve is in a closed state, and the liquid enters the air bag assembly from the liquid passage. By reciprocatingly pressing the air bag, the operation of filling the traditional gear pump with liquid before use is solved, and the manufacturing precision requirements of the driving gear and the driven gear are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the present utility model.

[0015] Figure 2 It is a center cross-sectional view of the present utility model.

[0016] Figure 3 This is an exploded view of the present invention.

[0017] The above drawings include the following reference numerals:

[0018] 1. Gearbox; 11. Mounting slot; 12. Liquid inlet channel; 13. Liquid outlet channel; 2. Motor; 3. Driving gear; 4. Driven gear; 5. Airbag assembly; 51. Base; 511. Liquid passage; 52. Manual button; 521. Recessed portion; 53. Pressing ring; 531. Pressing portion; 54. Screw; 55. Pressing chamber; 56. Sealing ring; 6. First one-way valve; 7. Second one-way valve; 8. Gearbox assembly. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Reference Figures 1 to 3 As shown, a manual push gear pump includes a gear box 1 and a motor 2. The gear box 1 is provided with a driving gear 3 and a driven gear 4 that mesh with each other. The gear box 1 is provided with a mounting groove 11 for placing the driving gear 3 and the driven gear 4. The motor 2 is used to drive the driving gear 3 to rotate. The gear box 1 is provided with a liquid inlet channel 12 and a liquid outlet channel 13 that are connected to the mounting groove 11. It also includes an airbag assembly 5 covering the opening of the mounting groove 11. The airbag assembly 5 is provided with a liquid passage 511 that is connected to the mounting groove 11. The liquid inlet channel 12 is provided with a first one-way valve 6, and the liquid outlet channel 13 is provided with a second one-way valve 7.

[0021] When the airbag assembly 5 is pressed, the first one-way valve 6 is closed and the second one-way valve 7 is open, allowing liquid or gas to be discharged toward the liquid outlet. When the airbag assembly 5 rebounds, the first one-way valve 6 is open and the second one-way valve 7 is closed, allowing liquid or gas to enter the pressing chamber 55 of the airbag assembly 5 through the liquid passage 511. Thus, by reciprocatingly pressing the airbag, the gas in the pipeline and the mounting groove 11 is completely discharged through the liquid outlet, and the liquid is then introduced into the mounting groove 11. The liquid is then transported through the meshing of the driving gear 3 and the driven gear 4, eliminating the need for traditional gear pumps to be filled with liquid before use.

[0022] The manufacturing precision requirements of the driving gear 3 and the driven gear 4 are also reduced, that is, the driving gear 3 and the driven gear 4 do not need to form a seal after assembly. The driving gear 3 and the driven gear 4 only need to engage with each other to form a seal during rotation, which can meet the use requirements of the gear pump and reduce the assembly difficulty.

[0023] Specifically, the airbag assembly 5 includes a base 51, a manual button 52, and a pressure ring 53. The pressure ring 53 is connected to the gearbox 1 via screws 54. The base 51 blocks the mounting slot 11. The base 51 and the manual button 52 are sandwiched between the gearbox 1 and the pressure ring 53. The manual button 52 and the base 51 close together to form a pressing chamber 55. The manual button 52 is made of rubber, which facilitates manual operation of the airbag assembly 5.

[0024] The manual button 52 is provided with a recessed portion 521 on its periphery, and the pressure ring 53 is provided with a pressing portion 531 embedded in the recessed portion 521 , thereby ensuring the sealing of the pressing chamber 55 and preventing liquid from leaking through the connection between the manual button 52 and the pressure ring 53 .

[0025] A sealing ring 56 is sandwiched between the base 51 , the pressure ring 53 and the gear box 1 , thereby ensuring the sealing of the mounting groove 11 and preventing liquid from leaking through the connection between the three.

[0026] The driving gear 3 and the driven gear 4 divide the mounting groove 11 into a first half chamber and a second half chamber. The first half chamber is connected to the liquid inlet channel 12, the second half chamber is connected to the liquid outlet channel 13, and the liquid passage 511 is connected to the first half chamber.

[0027] Furthermore, a reduction gear assembly 8 is provided between the motor 2 and the driving gear 3. The function of the reduction gear assembly 8 is to convert the high-speed and low-torque rotation of the motor 2 into a low-speed and high-torque output to adapt to the working characteristics of the gear pump.

[0028] In another aspect, the present invention provides a soap dispenser comprising a manual-operated gear pump as described in any of the above items. This manual-operated gear pump enables the automatic soap dispenser to rationally control the output of hand soap, intelligently adjusting the stable flow rate of hand soap. This design not only avoids the problem of inconsistent hand soap output, but also achieves high foaming efficiency, eliminates noise disturbances during use, and prolongs its service life. When the gear pump is not pumping liquid, the airbag assembly 5 is reciprocated to resolve the aforementioned issues.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0030] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A manual pressure gear pump, comprising a gear box (1) and a motor (2), wherein the gear box (1) is provided with a driving gear (3) and a driven gear (4) that mesh with each other, the gear box (1) is provided with a mounting groove (11) for placing the driving gear (3) and the driven gear (4), the motor (2) is used to drive the driving gear (3) to rotate, and the gear box (1) is provided with a liquid inlet channel (12) and a liquid outlet channel (13) that are connected to the mounting groove (11), characterized in that: The invention also includes an airbag assembly (5) covering the opening of the installation groove (11), wherein the airbag assembly (5) is provided with a liquid passage (511) communicating with the installation groove (11), the liquid inlet passage (12) is provided with a first one-way valve (6), and the liquid outlet passage (13) is provided with a second one-way valve (7).

2. A manual pressure gear pump according to claim 1, characterized in that: The airbag assembly (5) includes a base (51), a manual button (52) and a pressure ring (53); the pressure ring (53) is connected to the gear box (1) via a screw (54); the base (51) blocks the mounting groove (11); the base (51) and the manual button (52) are sandwiched between the gear box (1) and the pressure ring (53); the manual button (52) and the base (51) are closed to form a pressing chamber (55).

3. A manual pressure gear pump according to claim 2, characterized in that: The manual button (52) is made of rubber material.

4. A manual pressure gear pump according to claim 2, characterized in that: A recessed portion (521) is provided on the periphery of the manual button (52), and a pressing portion (531) embedded in the recessed portion (521) is provided on the pressing ring (53).

5. The manual pressure gear pump according to claim 2, characterized in that: A sealing ring (56) is sandwiched between the base (51), the pressure ring (53) and the gear box (1).

6. The manual pressure gear pump according to claim 1, characterized in that: The driving gear (3) and the driven gear (4) divide the mounting groove (11) into a first half-cavity and a second half-cavity, the first half-cavity being in communication with the liquid inlet channel (12), the second half-cavity being in communication with the liquid outlet channel (13), and the liquid passage (511) being in communication with the first half-cavity.

7. A soap dispenser, characterized in that: It comprises a manually pressable gear pump as described in any one of claims 1 to 6.

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