CN219932417U - Miniature electric high negative pressure diaphragm pump - Google Patents

Abstract

The utility model relates to the technical field of miniature electric diaphragm pumps, in particular to a miniature electric high negative pressure diaphragm pump which comprises a pump body, wherein backflow prevention devices are arranged on two sides of the interior of the pump body, the upper end and the lower end of the pump body are fixedly connected with a connecting pipe through flanges, the left side of the outer wall of the pump body is fixedly connected with a shell, the interior of the shell is fixedly connected with a driving motor through a bracket, and a turntable is fixedly connected with the output end of the driving motor. Through the cooperation between limit baffle, rotation baffle and the spring, the continuation of carousel rotates, the piston can move to the right to make the space on pump body right side diminish, the atmospheric pressure increases, at this in-process, the liquid can promote the rotation baffle of below and rotate, thereby the outflow pump body, and the resilience of top rotation baffle above the spring down, again with limit baffle laminating, cut off the liquid, thereby realize the unidirectional flow of corrosive liquid, prevent inside gas leakage and corrosive liquid refluence, do not need the concatenation check valve, thereby the cost is saved.

Description

Miniature electric high negative pressure diaphragm pump

Technical Field

The utility model relates to the technical field of miniature electric diaphragm pumps, in particular to a miniature electric high negative pressure diaphragm pump.

Background

The miniature electric diaphragm pump uses miniature DC motor (electric motor with general voltage of 5V, 12V and 24V) as power driving device to drive internal mechanical eccentric device to make eccentric movement, and uses the eccentric movement to drive internal diaphragm to make reciprocating movement so as to compress the air in the pump cavity with fixed volume (when the air-extracting hole is closed, the air-discharging hole is opened to form micro positive pressure), and stretch (when the air-discharging hole is closed, the air-extracting hole is opened to form negative pressure), and the pressure difference is produced between the air-pumping hole and external atmosphere, and under the action of pressure difference, the air pressure (sucked) is sucked into the pump cavity, and then discharged from the air-discharging hole.

For example, although the above document has the advantages of simple structure, low manufacturing cost and reliable use and sealing, when the micro electric diaphragm pump in the document is used, two check valves are required to be installed at the positions of the water inlet and the water outlet for realizing the unidirectional flow of corrosive liquid so as to prevent the leakage of internal gas and the backflow of the corrosive liquid, and the check valve has higher manufacturing cost, and meanwhile, the micro electric diaphragm pump in the document cannot realize the backflow prevention of the corrosive liquid, so that the cost is higher in the use process of the micro electric diaphragm pump.

Disclosure of Invention

The utility model aims to solve the problems that in order to ensure the normal operation of a miniature electric diaphragm pump in the document, two one-way valves are required to be arranged at a water inlet and a water outlet so as to realize one-way flow of corrosive liquid and prevent internal gas leakage and corrosive liquid backflow, and the one-way valve has higher manufacturing cost, so that the cost is higher in the use process of the miniature electric diaphragm pump, and the miniature electric high negative pressure diaphragm pump is provided.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a miniature electronic high negative pressure diaphragm pump, includes the pump body, the inside both sides of the pump body all are provided with anti-backflow device, the upper and lower both ends of the pump body all pass through flange and connecting pipe looks rigid coupling, the outer wall left side of the pump body and shell looks rigid coupling, the inside of shell passes through support and driving motor looks rigid coupling, driving motor's output rigid coupling has the carousel.

Preferably, the backflow preventing device comprises a limit baffle, one end of the limit baffle is fixedly connected with the pump body, the outer wall of the limit baffle is tightly attached to the rotary baffle, one end of the rotary baffle is rotationally connected with the pump body through a rotating shaft, the outer wall of the rotary baffle is rotationally connected with one end of a spring through the rotating shaft, and the other end of the spring is rotationally connected with the pump body through the rotating shaft.

Preferably, the front end of the turntable is rotationally connected with the connecting rod through a rotating shaft, and one end of the connecting rod is rotationally connected with the transverse plate through the rotating shaft.

Preferably, the right end of the transverse plate is fixedly connected with a piston, and the outer wall of the piston is tightly attached to the pump body.

Preferably, a diaphragm is mounted in the middle of the interior of the pump body.

The miniature electric high negative pressure diaphragm pump provided by the utility model has the beneficial effects that: through the cooperation between limit baffle, rotate baffle and the spring, external atmospheric pressure can promote the rotation baffle of top and move downwards, thereby produce the gap between messenger's rotation baffle and the limit baffle, liquid flows into in the pump body through the runner pipe of top, the spring that the rotation baffle can tensile the top this moment, along with the continuation rotation of carousel, the piston can right shift, thereby make the space on pump body right side diminish, the atmospheric pressure increases, in-process, the rotation baffle of liquid below can promote, thereby flow the pump body, and the resilience of top rotation baffle above spring down, laminate with limit baffle again, cut off liquid, thereby realize the unidirectional flow of corrosive liquid, prevent inside gas leakage and corrosive liquid refluence, need not splice the check valve, thereby the cost is practiced thrift.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic front plan view of the interconnect structure of FIG. 1;

FIG. 3 is an enlarged perspective view of a portion of the connecting structure of FIG. 2;

fig. 4 is a schematic diagram of a connection structure at a in fig. 2.

In the figure: 1. pump body, 2, shell, 3, driving motor, 4, anti-backflow device, 401, limit baffle, 402, rotation baffle, 403, spring, 4A1, hand wheel, 4A2, screw rod, 4A3, nut, 4A4, ring seal, 5, carousel, 6, connecting rod, 7, diaphragm, 8, piston, 9, diaphragm, 10, connecting pipe.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

example 1:

referring to fig. 1-4, in this embodiment: the utility model provides a miniature electronic high negative pressure diaphragm pump, including pump body 1, the inside both sides of pump body 1 all are provided with backflow preventer 4, the upper and lower both ends of pump body 1 all are through flange and connecting pipe 10 looks rigid coupling, top connecting pipe 10 is used for intaking, below connecting pipe 10 is used for out water, the outer wall left side of pump body 1 is rigid coupling mutually with shell 2, the inside of shell 2 is through support and driving motor 3 looks rigid coupling, driving motor 3's model is selected according to the in-service use demand, satisfy the work demand can, driving motor 3's output rigid coupling has carousel 5, driving motor 3's output drives carousel 5 and rotates.

The backflow preventing device 4 comprises a limit baffle 401, a rotary baffle 402 and a spring 403, wherein one end of the limit baffle 401 is fixedly connected with the pump body 1, the outer wall of the limit baffle 401 is tightly attached to the rotary baffle 402, the limit baffle 401 is used for blocking the position of the rotary baffle 402, when the rotary baffle 402 is attached to the limit baffle 401, the flow of corrosive liquid is prevented, one end of the rotary baffle 402 is rotationally connected with the pump body 1 through a rotating shaft, the outer wall of the rotary baffle 402 is rotationally connected with one end of the spring 403 through the rotating shaft, the spring 403 is compressed when the lower rotary baffle 402 rotates anticlockwise, the other end of the spring 403 is rotationally connected with the pump body 1 through the rotating shaft, and the elastic coefficient of the spring 403 is 30-50N/cm;

external air pressure can promote the rotation baffle 402 of top to move downwards to make and produce the gap between rotation baffle 402 and the limit baffle 401, liquid flows into the pump body 1 through runner pipe 10 of top, and rotation baffle 402 can tensile the spring 403 that divides this moment, along with the continuation rotation of carousel 5, piston 8 can move to the right, thereby make the space on the right side of pump body 1 diminish, the atmospheric pressure increases, in this process, liquid can promote the rotation of rotation baffle 402 of below, thereby flow out the pump body, and the resilience of rotation baffle 402 of top above spring 403 is down, laminating with limit baffle 401 again, cut off liquid, thereby realize the unidirectional flow of corrosive liquid, prevent inside gas leakage and corrosive liquid refluence, need not splice the check valve, thereby the cost is saved.

The front end of the turntable 5 is rotationally connected with the connecting rod 6 through a rotating shaft, the connecting rod 6 is driven to move left and right while rotating when the turntable 5 rotates, one end of the connecting rod 6 is rotationally connected with the transverse plate 7 through the rotating shaft, the connecting rod 6 drives the transverse plate 7 to move left and right, the right end of the transverse plate 7 is fixedly connected with the piston 8, the transverse plate 7 drives the piston 8 to move, the outer wall of the piston 8 is tightly attached to the pump body 1, the diaphragm 9 is arranged in the middle of the interior of the pump body 1, when the piston 8 moves leftwards, the diaphragm 9 can be moved leftwards, and when the piston 8 moves rightwards, the diaphragm 9 can be moved rightwards.

Working principle:

when the miniature electric high negative pressure diaphragm pump is used, firstly, the external power supply of the driving motor 3 is connected, the output end of the driving motor 3 drives the rotary disc 5 to rotate anticlockwise, the rotary disc 5 can enable the connecting rod 6 to rotate in a small amplitude and move leftwards, the connecting rod 6 drives the transverse plate 7 to move leftwards, the transverse plate 7 drives the piston 8 to move, the piston 8 can utilize air pressure to enable the diaphragm 9 to move leftwards, the space on the right side of the pump body 1 becomes larger, the air pressure becomes smaller, the external air pressure can push the upper rotating baffle 402 to move downwards, so that gaps are formed between the rotating baffle 402 and the limiting baffle 401, liquid flows into the pump body 1 through the runner pipe 10 on the upper, at the moment, the rotating baffle 402 can stretch the upper spring 403, the piston 8 can move rightwards along with continuous rotation of the rotary disc 5, the space on the right side of the pump body 1 becomes smaller, the air pressure is increased, in the process, the liquid can push the lower rotating baffle 402 to rotate, and accordingly the pump body flows out, the upper rotating baffle 402 is rebounded under the spring 403, the limit baffle 401 again, the liquid is attached to the limiting baffle 401, thereby realizing unidirectional corrosion of the liquid, the inner gas leakage and no need of the splicing device.

Example 2:

referring to fig. 1-4, in this embodiment: the miniature electric high negative pressure diaphragm pump comprises a hand wheel 4A1, a screw 4A2, a nut 4A3 and an annular sealing ring 4A4, wherein the outer wall of the hand wheel 4A1 is rotationally connected with a pump body 1 through a bearing, one end of the hand wheel 4A1 is fixedly connected with the screw 4A2, the hand wheel 4A1 drives the screw 4A2 to rotate, the outer wall of the screw 4A2 is in threaded connection with the nut 4A3, the screw 4A2 can enable the nut 4A3 to move up and down, the outer wall of the nut 4A3 is in sliding connection with the pump body 1 through a sliding groove, one end of the nut 4A3 is fixedly connected with the annular sealing ring 4A4, and as the annular sealing ring 4A4 has deformation capability, the lower nut 4A3 can compress the annular sealing ring 4A4 to wrap one end of a connecting pipe 10, the sealing effect is better, the outer wall of the annular sealing ring 4A4 is tightly attached to the pump body 1, and one side of the annular sealing ring 4A4 is tightly attached to the connecting pipe 10;

the user is together fixed connecting pipe 10 and pump body 1 through the flange, and the one end of connecting pipe 10 is in the same place with annular seal 4A4 laminating this moment, later through rotating hand wheel 4A1, drives screw rod 4A2 and rotates, and screw rod 4A2 can make nut 4A3 move down, because annular seal 4A4 has the deformability, and when the nut 4A3 of below moved down, can compress annular seal 4A4 for in annular seal 4A4 wraps up the one end of connecting pipe 10, sealed effect is better.

Working principle:

when the embodiment works, a user fixes the connecting pipe 10 and the pump body 1 together through the flange, at the moment, one end of the connecting pipe 10 is attached to the annular sealing ring 4A4 together, then the hand wheel 4A1 is rotated to drive the screw 4A2 to rotate, the screw 4A2 can enable the nut 4A3 to move downwards, and when the lower nut 4A3 moves downwards due to the deformation capability of the annular sealing ring 4A4, the annular sealing ring 4A4 can be compressed, so that the annular sealing ring 4A4 wraps one end of the connecting pipe 10, the sealing effect is better, and the use of the device is completed.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims (5)

1. The utility model provides a miniature electronic high negative pressure diaphragm pump, includes pump body (1), its characterized in that: the anti-backflow device is characterized in that anti-backflow devices (4) are arranged on two sides of the inside of the pump body (1), the upper end and the lower end of the pump body (1) are fixedly connected with the connecting pipe (10) through flanges, the left side of the outer wall of the pump body (1) is fixedly connected with the shell (2), the inside of the shell (2) is fixedly connected with the driving motor (3) through a support, and the output end of the driving motor (3) is fixedly connected with the rotary table (5).

2. The miniature electric high negative pressure diaphragm pump of claim 1, wherein: the anti-backflow device (4) comprises a limit baffle (401), one end of the limit baffle (401) is fixedly connected with the pump body (1), the outer wall of the limit baffle (401) is tightly attached to the rotating baffle (402), one end of the rotating baffle (402) is rotationally connected with the pump body (1) through a rotating shaft, the outer wall of the rotating baffle (402) is rotationally connected with one end of a spring (403) through the rotating shaft, and the other end of the spring (403) is rotationally connected with the pump body (1) through the rotating shaft.

3. The miniature electric high negative pressure diaphragm pump of claim 1, wherein: the front end of the turntable (5) is rotationally connected with the connecting rod (6) through a rotating shaft, and one end of the connecting rod (6) is rotationally connected with the transverse plate (7) through the rotating shaft.

4. A miniature electric high negative pressure diaphragm pump according to claim 3, characterized in that: the right end of the transverse plate (7) is fixedly connected with a piston (8), and the outer wall of the piston (8) is tightly attached to the pump body (1).

5. The miniature electric high negative pressure diaphragm pump of claim 1, wherein: a diaphragm (9) is arranged in the middle of the inside of the pump body (1).