A low-noise miniature electric diaphragm pump

Abstract

The utility model discloses a low-noise micro electric diaphragm pump, which relates to the technical field of diaphragm pumps, and includes a pump body and a water outlet pipe, wherein a stepper motor is fixedly mounted on the inner side surface of the pump body, a film tube is fixedly mounted on the inner side surface of the pump body, and a fast-rotating driving mechanism is arranged between the stepper motor and the film tube; a through pipe is fixedly mounted on the inner side surface of the pump body, a protective shell is fixedly mounted on the lower surface of the water outlet pipe, and a fixing mechanism is arranged between the through pipe and the protective shell. The low-noise micro electric diaphragm pump utilizes a stepper motor to drive a crankshaft to operate, and the crankshaft drives a pull rod to telescope a movable plug, thereby quickly discharging liquid into a fixed pipe, so as to improve the liquid circulation efficiency, and the film tube is connected to the inside of the pump body, thereby preventing the liquid from corroding the inside of the pump body, and the fixed pipe is supported by a support plate, and the rotating plate is driven to rotate by a transmission shaft, thereby accelerating the speed of conveying liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps, in particular to a low-noise micro electric diaphragm pump. Background Art

[0002] Diaphragm pumps usually use a thin film to separate the internal liquid from the pump cylinder to prevent the liquid from entering the pump cylinder, and the parts of both sides of the diaphragm that are in contact with the liquid are coated with corrosion-resistant materials to prevent the film from being broken due to long-term contact with the liquid.

[0003] In the prior art, a Chinese patent with publication number CN219932417U discloses a micro electric high negative pressure diaphragm pump, including a pump body, both sides of the pump body are provided with anti-backflow devices, the upper and lower ends of the pump body are fixedly connected to the connecting pipe through flanges, the left side of the outer wall of the pump body is fixedly connected to the shell, the inside of the shell is fixedly connected to the driving motor through a bracket, and the output end of the driving motor is fixedly connected to a turntable. Through the cooperation between the limit baffle, the rotating baffle and the spring, the continuous rotation of the turntable will cause the piston to move to the right, thereby reducing the space on the right side of the pump body and increasing the air pressure. In this process, the liquid will push the rotating baffle below to rotate, thereby flowing out of the pump body, and the upper rotating baffle will fit with the limit baffle again under the rebound of the upper spring to cut off the liquid, thereby realizing the unidirectional flow of the corrosive liquid, preventing internal gas leakage and corrosive liquid backflow, and no longer needing to splice a one-way valve, thereby saving costs.

[0004] During use, the above device uses a turntable to drive the piston to operate and compress the spring, thereby extracting the liquid. However, in the above device, the spring is half-suspended in the limit baffle, and the spring cannot be fixed in the internal groove after being compressed. Therefore, during actual use, the spring may be corroded by the liquid and break. Utility Model Content

[0005] The utility model aims to provide a low-noise micro electric diaphragm pump to solve the problem of spring being corroded and broken by liquid in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a low-noise micro electric diaphragm pump, comprising a pump body and a water outlet pipe, and also comprising:

[0007] A stepper motor is fixedly mounted on the inner side of the pump body, a thin film tube is fixedly mounted on the inner side of the pump body, and a fast-rotating driving mechanism is arranged between the stepper motor and the thin film tube;

[0008] A through pipe is fixedly installed on the inner side surface of the pump body, a protective shell is fixedly installed on the lower surface of the water outlet pipe, and a fixing mechanism is arranged between the through pipe and the protective shell.

[0009] Furthermore, the driving mechanism includes a stepper motor, an output shaft is fixedly mounted on the inner side of the stepper motor, a rotating shaft is fixedly mounted on the inner side of the output shaft, a transmission shaft is fixedly mounted on the inner side of the rotating shaft, a crankshaft is fixedly mounted on the outer surface of the transmission shaft, and a crankshaft structure is formed between the crankshaft and the transmission shaft.

[0010] Furthermore, a connecting rod is fixedly mounted on the inner side surface of the crankshaft, a pull rod is fixedly mounted on the outer surface of the connecting rod, a movable plug is fixedly mounted on the outer surface of the pull rod, and a telescopic structure is formed between the movable plug and the pull rod.

[0011] Furthermore, the movable plug is movably mounted on the inner side of the fixed tube, and a support plate is fixedly mounted on the outer surface of the fixed tube, and a fixed sleeve is fixedly mounted on the outer surface of the fixed tube.

[0012] Furthermore, a thin film tube is fixedly mounted on the inner side surface of the fixed tube, and the thin film tube is fixedly mounted on the inner side surface of the convex pipe, and a ferrule is fixedly mounted on the outer surface of the convex pipe.

[0013] Furthermore, a rotating disk is fixedly mounted on the outer surface of the transmission shaft, and the rotating disk is movably mounted on the inner side surface of the fixed tube, and a rotating structure is formed between the rotating disk and the transmission shaft.

[0014] Furthermore, the fixing mechanism includes a protective shell, a fixing bolt is fixedly installed on the inner side of the protective shell, and a through pipe is fixedly installed on the outer surface of the fixing bolt, and the through pipe is fixedly connected to the protective shell through the fixing bolt.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The low-noise micro electric diaphragm pump has the following specific contents:

[0017] 1. Use the stepper motor to drive the crankshaft to operate, and drive the pull rod through the crankshaft to telescope the movable plug, so that the liquid can be quickly discharged into the fixed pipe to achieve the purpose of improving the liquid circulation efficiency;

[0018] Furthermore, the thin film tube is passed through and connected to the inside of the pump body, thereby preventing the liquid from corroding the inside of the pump body, the fixed tube is supported by the support plate, and the rotating plate is driven to rotate by the transmission shaft, thereby accelerating the speed of conveying the liquid.

[0019] 2. Use the fixing bolt to fix the through pipe and the protective shell to prevent liquid leakage, and collect the liquid into the outlet pipe, and then discharge it from the outlet pipe;

[0020] Furthermore, when the stepper motor stops rotating, the circulation of the liquid is restricted by the rotating disk, and the fixed pipe is blocked by the movable plug, thereby achieving the purpose of preventing the flow of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the water outlet pipe of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the pump body of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the thin film tube of the utility model;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed pipe of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the movable plug of the utility model.

[0027] In the figure: 1. pump body; 2. water outlet pipe; 3. film tube; 4. support plate; 5. fixing sleeve; 6. fixing pipe; 7. stepper motor; 8. output shaft; 9. rotating shaft; 10. transmission shaft; 11. crankshaft; 12. connecting rod; 13. pull rod; 14. movable plug; 15. rotating plate; 16. protective shell; 17. fixing bolt; 18. through pipe; 19. convex pipe; 20. ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1: Please refer to Figure 1-Figure 6 The present invention provides the following technical solution: a low-noise micro electric diaphragm pump, including a pump body 1 and a water outlet pipe 2, and also includes: a stepper motor 7 is fixedly installed on the inner side surface of the pump body 1, a film tube 3 is fixedly installed on the inner side surface of the pump body 1, and a fast-rotating driving mechanism is arranged between the stepper motor 7 and the film tube 3; a through pipe 18 is fixedly installed on the inner side surface of the pump body 1, a protective shell 16 is fixedly installed on the lower surface of the water outlet pipe 2, and a fixing mechanism is arranged between the through pipe 18 and the protective shell 16.

[0030] By starting the stepper motor 7, the stepper motor 7 drives the driving mechanism to discharge the liquid into the film tube 3, thereby preventing the liquid from corroding the parts inside the pump body 1, and the through pipe 18 and the protective shell 16 are fixedly connected by the fixing mechanism, so that the liquid in the film tube 3 is quickly discharged into the water outlet pipe 2.

[0031] Embodiment 2: On the basis of embodiment 1, a crankshaft 11 is further disclosed, and its specific structure is as follows: the driving mechanism includes a stepper motor 7, the inner side surface of the stepper motor 7 is fixedly mounted with an output shaft 8, and the inner side surface of the output shaft 8 is fixedly mounted with a rotating shaft 9, the inner side surface of the rotating shaft 9 is fixedly mounted with a transmission shaft 10, and the outer surface of the transmission shaft 10 is fixedly mounted with the crankshaft 11, and a crankshaft structure is formed between the crankshaft 11 and the transmission shaft 10, a connecting rod 12 is fixedly mounted on the inner side surface of the crankshaft 11, and a pull rod 13 is fixedly mounted on the outer surface of the connecting rod 12, a movable plug 14 is fixedly mounted on the outer surface of the pull rod 13, and a telescopic structure is formed between the movable plug 14 and the pull rod 13, the movable plug 14 is movably mounted on the inner side surface of the fixed tube 6, and a support plate 4 is fixedly mounted on the outer surface of the fixed tube 6, and a fixed sleeve 5 is fixedly mounted on the outer surface of the fixed tube 6.

[0032] First, start the stepper motor 7, and drive the output shaft 8 to rotate through the stepper motor 7, the output shaft 8 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the transmission shaft 10 to rotate, the transmission shaft 10 drives the crankshaft 11 to rotate, and the crankshaft 11 drives the pull rod 13 to pull the movable plug 14 to perform telescopic movement, so that the liquid in the fixed tube 6 is quickly discharged into the film tube 3.

[0033] Embodiment 3: On the basis of embodiment 1, a rotating disk 15 is further disclosed, and its specific structure is as follows: a thin film tube 3 is fixedly installed on the inner side surface of the fixed tube 6, and the thin film tube 3 is fixedly installed on the inner side surface of the convex pipe 19, a ring 20 is fixedly installed on the outer surface of the convex pipe 19, a rotating disk 15 is fixedly installed on the outer surface of the transmission shaft 10, and the rotating disk 15 is movably installed on the inner side surface of the fixed tube 6, and a rotating structure is formed between the rotating disk 15 and the transmission shaft 10, the fixing mechanism includes a protective shell 16, a fixing bolt 17 is fixedly installed on the inner side surface of the protective shell 16, and a through pipe 18 is fixedly installed on the outer surface of the fixing bolt 17, and the through pipe 18 is fixedly connected to the protective shell 16 through the fixing bolt 17.

[0034] After the stepper motor 7 is started, the transmission shaft 10 drives the rotating disk 15 to rotate, thereby transporting the liquid in the fixed tube 6 to the fixed sleeve 5, and when the stepper motor 7 stops rotating, the rotating disk 15 is used to limit the circulation of the liquid, and the fixed tube 6 is blocked by the movable plug 14 to prevent the circulation of the liquid, and the through pipe 18 and the protective shell 16 are fixed by the fixing bolt 17, so that the liquid is gathered together and then discharged through the outlet pipe 2.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-noise micro electric diaphragm pump, comprising a pump body (1) and a water outlet pipe (2), characterized in that: Also includes: A stepper motor (7) is fixedly mounted on the inner side surface of the pump body (1), a thin film tube (3) is fixedly mounted on the inner side surface of the pump body (1), and a fast-rotating driving mechanism is provided between the stepper motor (7) and the thin film tube (3); A through pipe (18) is fixedly mounted on the inner side surface of the pump body (1), a protective shell (16) is fixedly mounted on the lower surface of the water outlet pipe (2), and a fixing mechanism is provided between the through pipe (18) and the protective shell (16).

2. A low-noise micro electric diaphragm pump according to claim 1, characterized in that: The driving mechanism comprises a stepper motor (7), an output shaft (8) is fixedly mounted on the inner side surface of the stepper motor (7), a rotating shaft (9) is fixedly mounted on the inner side surface of the output shaft (8), a transmission shaft (10) is fixedly mounted on the inner side surface of the rotating shaft (9), a crankshaft (11) is fixedly mounted on the outer surface of the transmission shaft (10), and a crankshaft structure is formed between the crankshaft (11) and the transmission shaft (10).

3. A low-noise micro electric diaphragm pump according to claim 2, characterized in that: A connecting rod (12) is fixedly mounted on the inner side surface of the crankshaft (11), a pull rod (13) is fixedly mounted on the outer surface of the connecting rod (12), a movable plug (14) is fixedly mounted on the outer surface of the pull rod (13), and a telescopic structure is formed between the movable plug (14) and the pull rod (13).

4. A low-noise micro electric diaphragm pump according to claim 3, characterized in that: The movable plug (14) is movably mounted on the inner side of the fixed tube (6), and a support plate (4) is fixedly mounted on the outer surface of the fixed tube (6), and a fixed sleeve (5) is fixedly mounted on the outer surface of the fixed tube (6).

5. A low-noise micro electric diaphragm pump according to claim 4, characterized in that: A thin film tube (3) is fixedly mounted on the inner side surface of the fixed tube (6), and the thin film tube (3) is fixedly mounted on the inner side surface of the convex pipe (19), and a ferrule (20) is fixedly mounted on the outer surface of the convex pipe (19).

6. A low-noise micro electric diaphragm pump according to claim 2, characterized in that: A rotating disk (15) is fixedly mounted on the outer surface of the transmission shaft (10), and the rotating disk (15) is movably mounted on the inner side surface of the fixed tube (6), and a rotating structure is formed between the rotating disk (15) and the transmission shaft (10).

7. A low-noise micro electric diaphragm pump according to claim 1, characterized in that: The fixing mechanism comprises a protective shell (16), a fixing bolt (17) is fixedly mounted on the inner side surface of the protective shell (16), a through pipe (18) is fixedly mounted on the outer surface of the fixing bolt (17), and the through pipe (18) is fixedly connected to the protective shell (16) via the fixing bolt (17).

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