Gear pump with self-suction capacity and soap dispenser

Abstract

The utility model provides a gear pump and soap dispenser with self-absorption ability, including gear box and motor, the gear box is equipped with mutually engaged driving gear and driven gear, the gear box is equipped with the mounting groove that is used for placing driving gear and driven gear, the motor is used for driving the driving gear to rotate, 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, and the air bag assembly comprises a diaphragm seat, a diaphragm plate, an air bag seat and a pressing air bag which are arranged in sequence; the diaphragm seat and the air bag seat are closed to form a liquid inlet chamber and a liquid outlet chamber, the air bag seat and the pressing air bag are closed to form a pressing chamber, the liquid inlet chamber is communicated with the pressing chamber and the liquid inlet channel, and the liquid outlet chamber is communicated with the pressing chamber and the liquid outlet channel; the diaphragm plate is provided with a first deformation part and a second deformation part, the first deformation part can be switched between the positions for blocking and conducting the pressing cavity and the liquid inlet channel, and the second deformation part can be switched between the positions for blocking and conducting the pressing cavity and the liquid outlet channel, so that the operation that liquid needs to be injected before a traditional gear pump is used is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a gear pump with self-priming capability 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 gear pump and a soap dispenser with self-priming capability to solve the problems mentioned in the above background technology section.

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

[0006] A gear pump with self-priming capability, comprising 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 that are connected to the mounting groove, and also includes an airbag assembly, the airbag assembly includes a diaphragm seat, a diaphragm plate, an airbag seat and a pressing airbag arranged in sequence; the diaphragm seat and the airbag seat are closed to form a liquid inlet chamber and a liquid outlet chamber, the airbag seat and the pressing airbag are closed to form a pressing chamber, the liquid inlet chamber is connected to the pressing chamber and the liquid inlet channel, and the liquid outlet chamber is connected to the pressing chamber and the liquid outlet channel; the diaphragm plate is provided with a first deforming portion and a second deforming portion, the first deforming portion can be switched between a position of blocking and conducting the pressing chamber and the liquid inlet channel, and the second deforming portion can be switched between a position of blocking and conducting the pressing chamber and the liquid outlet channel.

[0007] Furthermore, the diaphragm seat is provided with a first convex ring, and when the first deformable part supports the first convex ring, the pressing chamber and the liquid inlet channel are in a blocked state; the airbag seat is provided with a second convex ring, and when the second deformable part supports the second convex ring, the pressing chamber and the liquid outlet channel are in a blocked state.

[0008] Furthermore, the diaphragm seat is provided with a first liquid through hole and a first boss extending toward the liquid outlet chamber, and the end face of the first boss is located between the first liquid through hole and the end face of the first convex ring; the airbag seat is provided with a second liquid through hole and a second boss extending toward the liquid inlet chamber, and the end face of the second boss is located between the second liquid through hole and the end face of the second convex ring.

[0009] Furthermore, the diaphragm plate is provided with a plurality of hollow grooves arranged around the first deformation portion and the second deformation portion, and the liquid enters the liquid inlet chamber and the liquid outlet chamber through the hollow grooves.

[0010] Furthermore, the diaphragm seat is provided with a recessed portion for the diaphragm plate to be embedded, and the airbag seat is provided with an annular portion for supporting the diaphragm plate.

[0011] Furthermore, the airbag assembly also includes a pressure ring, which is fixed to the gear box, and the diaphragm seat, diaphragm plate, airbag seat and pressing airbag are clamped between the pressure ring and the gear box.

[0012] Furthermore, the airbag assembly also includes a sealing ring, which is clamped between the pressure ring, the gear box and the diaphragm seat.

[0013] Furthermore, the diaphragm plate is made of rubber material.

[0014] On the other hand, a soap dispenser includes a gear pump with self-priming capability as described in any one of the above items.

[0015] The beneficial effects of the utility model are as follows: a gear pump with self-priming ability, comprising 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 that are connected to the mounting groove, and further comprising an airbag assembly, the airbag assembly comprising a diaphragm seat, a diaphragm plate, an airbag seat and a pressing airbag arranged in sequence; the diaphragm seat and The airbag seat is closed to form a liquid inlet chamber and a liquid outlet chamber. The airbag seat and the pressing airbag are closed to form a pressing chamber. The liquid inlet chamber is connected to the pressing chamber and the liquid inlet channel, and the liquid outlet chamber is connected to the pressing chamber and the liquid outlet channel. The diaphragm plate is provided with a first deforming portion and a second deforming portion. The first deforming portion can be switched between a position of blocking and a position of conducting the pressing chamber and the liquid inlet channel, and the second deforming portion can be switched between a position of blocking and a position of conducting the pressing chamber and the liquid outlet channel. During the process of pressing the airbag assembly, the first deforming portion is switched back and forth to be in a blocking state or the second deforming portion is switched to be in a blocking state, and the liquid is introduced into the mounting groove. Then, the liquid is transported by meshing the driving gear and the driven gear, which solves the problem of the traditional gear pump needing to be filled with liquid before use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the present utility model.

[0017] Figure 2 It is a central cutaway view of the present invention.

[0018] Figure 3 It is a partially cutaway perspective view of the present invention.

[0019] Figure 4 This is an exploded view of the present invention.

[0020] Figure 5 This is another exploded view of the present invention.

[0021] The above drawings include the following reference numerals:

[0022] 1. Gearbox; 11. Mounting groove; 12. Liquid inlet channel; 13. Liquid outlet channel; 2. Motor; 3. Driving gear; 4. Driven gear; 5. Airbag assembly; 51. Diaphragm seat; 511. First convex ring; 512. First liquid hole; 513. First boss; 514. Recessed portion; 52. Diaphragm plate; 521. First deformation portion; 522. Second deformation portion; 523. Hollow groove; 53. Airbag seat; 531. Second convex ring; 532. Second liquid hole; 533. Second boss; 534. Annular portion; 54. Pressing airbag; 55. Liquid inlet chamber; 56. Liquid outlet chamber; 57. Pressing chamber; 58. Pressing ring; 581. Screw; 59. Sealing ring; 6. Gearbox assembly. DETAILED DESCRIPTION

[0023] 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.

[0024] Reference Figures 1 to 5 As shown, a gear pump with self-priming capability 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, which includes a diaphragm seat 51, a diaphragm plate 52, an airbag seat 53 and a pressing airbag 54 arranged in sequence; the diaphragm seat 51 and the airbag seat 53 are provided with a plurality of holes. The closure forms a liquid inlet chamber 55 and a liquid outlet chamber 56, and the airbag seat 53 and the pressing airbag 54 close to form a pressing chamber 57. The liquid inlet chamber 55 connects the pressing chamber 57 and the liquid inlet channel 12, and the liquid outlet chamber 56 connects the pressing chamber 57 and the liquid outlet channel 13; the diaphragm plate 52 is provided with a first deformation portion 521 and a second deformation portion 522, and the first deformation portion 521 can be switched between the position of blocking and conducting the pressing chamber 57 and the liquid inlet channel 12, and the second deformation portion 522 can be switched between the position of blocking and conducting the pressing chamber 57 and the liquid outlet channel 13.

[0025] When the airbag assembly 5 is pressed, the first deformable portion 521 is in a position to block the pressing chamber 57 and the liquid inlet channel 12, and the second deformable portion 522 is in a position to connect the pressing chamber 57 and the liquid outlet channel 13, so that liquid or gas flows from the pressing chamber 57 to the liquid outlet channel 13. When the airbag assembly 5 rebounds, the first deformable portion 521 is in a position to connect the pressing chamber 57 and the liquid inlet channel 12, and the second deformable portion 522 is in a position to block the pressing chamber 57 and the liquid outlet channel 13, so that liquid or gas flows from the liquid inlet channel 12 to the pressing chamber 57. Thus, by reciprocatingly pressing the airbag 54 and the airbag assembly 5, the gas in the pipeline and the mounting groove 11 is completely discharged through the liquid outlet channel 13, and the liquid is introduced into the mounting groove 11. Then, the driving gear 3 and the driven gear 4 are engaged to realize the liquid transportation work, which solves the problem of the traditional gear pump needing to be filled with liquid before use.

[0026] The diaphragm seat 51 is provided with a first protruding ring 511. When the first deformable portion 521 abuts the first protruding ring 511, the pressure chamber 57 and the liquid inlet channel 12 are blocked. When the first deformable portion 521 does not abut the first protruding ring 511, liquid or gas flows through the intermediate channel formed by the first protruding ring 511. Similarly, the airbag seat 53 is provided with a second protruding ring 531. When the second deformable portion 522 abuts the second protruding ring 531, the pressure chamber 57 and the liquid outlet channel 13 are blocked. When the second deformable portion 522 does not abut the second protruding ring 531, liquid or gas flows through the intermediate channel formed by the second protruding ring 531.

[0027] The diaphragm seat 51 is provided with a first liquid passage hole 512 and a first boss 513 extending toward the liquid outlet chamber 56. The end surface of the first boss 513 is located between the first liquid passage hole 512 and the end surface of the first protruding ring 511. Therefore, when the first deformable portion 521 moves, it only moves between the positions where it abuts the first boss 513 and the first protruding ring 511, without blocking the first liquid passage hole 512. This ensures that the liquid flow from the liquid outlet chamber 56 to the liquid outlet channel 13 remains unimpeded, unaffected by the first deformable portion 521. Similarly, the airbag seat 53 is provided with a second liquid passage hole 532 and a second boss 533 extending toward the liquid inlet chamber 55. The end surface of the second boss 533 is located between the second liquid passage hole 532 and the end surface of the second protruding ring 531. Therefore, when the second deformable portion 522 moves, it only moves between the positions abutting the second boss 533 and the second protruding ring 531 , and will not block the second liquid hole 532 , so that the path for the liquid to flow from the liquid inlet chamber 55 to the pressing chamber 57 remains unobstructed and is not affected by the second deformable portion 522 .

[0028] Reference Figure 3As shown, through the arrangement of the above structure, when the pressing airbag 54 is pressed back and forth, the liquid or gas moves along the predetermined planned path of the liquid inlet channel 12, the mounting groove 11, the first convex ring 511, the liquid inlet chamber 55, the second liquid hole 532, the pressing chamber 57, the second convex ring 531, the liquid outlet chamber 56, the first liquid hole 512, the mounting groove 11, and the liquid outlet channel 13.

[0029] The diaphragm plate 52 and the pressing airbag 54 are made of rubber material, so that when the pressing airbag 54 is pressed, the first deformable portion 521 and the second deformable portion 522 are impacted by gas or liquid and deformed.

[0030] The diaphragm 52 is provided with a plurality of hollow grooves 523 arranged around the first deformable portion 521 and the second deformable portion 522. Liquid enters the liquid inlet chamber 55 and the liquid outlet chamber 56 through the hollow grooves 523. The provision of the hollow grooves 523 facilitates the vertical displacement of the first deformable portion 521 and the second deformable portion 522, and the hollow grooves 523 serve as channels for liquid to enter the liquid inlet chamber 55 and the liquid outlet chamber 56, respectively.

[0031] The diaphragm seat 51 is provided with a recessed portion 514 for the diaphragm plate 52 to be embedded, and the airbag seat 53 is provided with an annular portion 534 for supporting the diaphragm plate 52. The recessed portion 514 is used to position the diaphragm plate 52, and the annular portion 534 is used to place the diaphragm plate 52 out of the recessed portion 514. The diaphragm plate 52 is fixed by the recessed portion 514 and the annular portion 534.

[0032] The airbag assembly 5 also includes a pressure ring 58, which is fixedly connected to the gearbox 1. The diaphragm seat 51, diaphragm plate 52, airbag seat 53, and pressure airbag 54 are sandwiched between the pressure ring 58 and the gearbox 1. The pressure ring 58 can be connected to the gearbox 1 via screws 581, and the diaphragm seat 51, diaphragm plate 52, airbag seat 53, and pressure airbag 54 are fixed together by the pressure ring 58 and the gearbox 1.

[0033] The airbag assembly 5 further includes a sealing ring 59 , which is sandwiched between the pressure ring 58 , the gear box 1 and the diaphragm seat 51 . The sealing ring 59 prevents liquid from leaking from the connection.

[0034] Furthermore, a reduction gear assembly 6 is provided between the motor 2 and the driving gear 3. The function of the reduction gear assembly 6 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.

[0035] In another aspect, the present invention provides a soap dispenser comprising a self-priming gear pump as described in any of the above items. The self-priming gear pump of the present invention enables the automatic soap dispenser to rationally control the output of hand soap, achieving intelligent adjustment of 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 service life. When the gear pump is not priming liquid, the airbag assembly 5 is reciprocated to resolve the aforementioned issues.

[0036] 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.

[0037] 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.

[0038] 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 gear pump with self-priming capability, 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) meshing 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) communicated with the mounting groove (11), characterized in that: The device also includes an airbag assembly (5), wherein the airbag assembly (5) includes a diaphragm seat (51), a diaphragm plate (52), an airbag seat (53), and a pressing airbag (54) arranged in sequence; The diaphragm seat (51) and the airbag seat (53) are closed to form a liquid inlet chamber (55) and a liquid outlet chamber (56); the airbag seat (53) and the pressing airbag (54) are closed to form a pressing chamber (57); the liquid inlet chamber (55) is connected to the pressing chamber (57) and the liquid inlet channel (12); and the liquid outlet chamber (56) is connected to the pressing chamber (57) and the liquid outlet channel (13); The diaphragm plate (52) is provided with a first deformable portion (521) and a second deformable portion (522), wherein the first deformable portion (521) can be switched between a position of blocking and a position of conducting the pressing chamber (57) and the liquid inlet channel (12), and the second deformable portion (522) can be switched between a position of blocking and a position of conducting the pressing chamber (57) and the liquid outlet channel (13).

2. A gear pump with self-priming capability according to claim 1, characterized in that: The diaphragm seat (51) is provided with a first convex ring (511). When the first deformable portion (521) supports the first convex ring (511), the pressing chamber (57) and the liquid inlet channel (12) are in a blocked state. The airbag seat (53) is provided with a second convex ring (531). When the second deformable portion (522) supports the second convex ring (531), the pressing chamber (57) and the liquid outlet channel (13) are in a blocked state.

3. A gear pump with self-priming capability according to claim 2, characterized in that: The diaphragm seat (51) is provided with a first liquid hole (512) and a first boss (513) extending toward the liquid outlet chamber (56), and the end face of the first boss (513) is located between the first liquid hole (512) and the end face of the first convex ring (511); the airbag seat (53) is provided with a second liquid hole (532) and a second boss (533) extending toward the liquid inlet chamber (55), and the end face of the second boss (533) is located between the second liquid hole (532) and the end face of the second convex ring (531).

4. The gear pump with self-priming capability according to claim 1, characterized in that: The diaphragm plate (52) is provided with a plurality of hollow grooves (523) arranged around the first deformation portion (521) and the second deformation portion (522), and liquid enters the liquid inlet chamber (55) and the liquid outlet chamber (56) through the hollow grooves (523).

5. The gear pump with self-priming capability according to claim 1, characterized in that: The diaphragm seat (51) is provided with a recessed portion (514) for the diaphragm plate (52) to be embedded, and the airbag seat (53) is provided with an annular portion (534) for supporting the diaphragm plate (52).

6. The gear pump with self-priming capability according to claim 1, characterized in that: The airbag assembly (5) further comprises a pressure ring (58), the pressure ring (58) being fixedly connected to the gear box (1), and the diaphragm seat (51), the diaphragm plate (52), the airbag seat (53) and the pressing airbag (54) being clamped between the pressure ring (58) and the gear box (1).

7. The gear pump with self-priming capability according to claim 6, characterized in that: The airbag assembly (5) further comprises a sealing ring (59), which is sandwiched between the pressure ring (58), the gear box (1) and the diaphragm seat (51).

8. The gear pump with self-priming capability according to claim 1, characterized in that: The diaphragm plate (52) is made of rubber material.

9. A soap dispenser, characterized in that: It comprises a gear pump with self-priming capability as claimed in any one of claims 1 to 8.

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