CN215891232U

CN215891232U - Fluid pump with automatic pressure relief structure

Info

Publication number: CN215891232U
Application number: CN202122060218.4U
Authority: CN
Inventors: 卢洁宇
Original assignee: Tianjin Shanshui Technology Co ltd
Current assignee: Tianjin Shanshui Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-22
Anticipated expiration: 2031-08-30

Abstract

A fluid pump with an automatic pressure relief structure. The product comprises a motor, wherein the motor is fixedly connected with a shell, the motor is provided with an output shaft, the output shaft is connected with a driving wheel, the driving wheel is connected with a rocker arm, the rocker arm is connected with a rubber elastic diaphragm piece, the rubber elastic diaphragm piece is connected with a base, the base is connected with a fixed seat, an elastic piece is arranged in the fixed seat, and the fixed seat is connected with an upper cover in a sealing way. The utility model is used for the fluid pump with the automatic pressure relief structure.

Description

Fluid pump with automatic pressure relief structure

The technical field is as follows:

the utility model relates to a fluid pump with an automatic pressure relief structure.

Background art:

in the prior art, a pump can only be used for inflating and pressurizing, and cannot automatically release pressure after pressurization according to the requirements of users. For example, the electronic sphygmomanometer needs to control the electromagnetic valve to realize automatic pressure relief of the system after pressurization, so that the current method is to combine the pump with the electromagnetic valve, and when the pressurization is completed and the pressure relief is needed, the electromagnetic valve is used for relieving the pressure. However, such an approach requires additional cost and system complexity for the solenoid valve.

The utility model content is as follows:

the utility model aims to provide a fluid pump with an automatic pressure relief structure, which can realize inflation and pressurization and can automatically relieve pressure and has a good use effect.

The above purpose is realized by the following technical scheme:

the fluid pump with the automatic pressure relief structure comprises a motor, a pressure sensor and a pressure sensor, wherein the motor is connected with and fixed to a shell, the motor is provided with an output shaft, the output shaft is connected with a transmission wheel, the transmission wheel is connected with a rocker arm, the rocker arm is connected with a rubber elastic diaphragm, the rubber elastic diaphragm is connected with a base, the base is connected with a fixed seat, an elastic element is arranged in the fixed seat, and the fixed seat is connected with an upper cover in a sealing manner; the rubber elastic diaphragm piece have A room and B room, A indoor lower valve block and the upper valve block of having, B room valve block in have on the valve block and under the valve block, A room with B room all have air vent, sealing line, fluid passage, A room with B room between have the flow channel of ventilating, the elastic member have the valve pocket, the elastic member seals into two valve pockets with the fixing base, the elastic member closes a valve pocket with the upper cover again, the upper cover have last air vent, side air vent, end air vent, last air vent, side air vent the end air vent between have the passageway of ventilating.

The fluid pump with the automatic pressure relief structure is characterized in that the upper cover is provided with a through hole for pressure relief, and the upper cover is provided with a pump pressurization interface.

The fluid pump with the automatic pressure relief structure is characterized in that the rocker arm is integrally formed and is provided with a hole through which air flows.

The fluid pump with the automatic pressure relief structure is characterized in that the shell is provided with a fixed clamping hook, and the shell is provided with an air inlet groove.

The base is provided with a sealing surface, the base is provided with a hole through which air flows, and the base is provided with an air flow channel.

The fluid pump with the automatic pressure relief structure is characterized in that the elastic piece is provided with a sealing line and is of an elastic sheet-shaped rebound structure.

The fluid pump with the automatic pressure relief structure is characterized in that the driving wheel is provided with a double-faced groove.

Has the advantages that:

1. the utility model can replace an electromagnetic valve, can realize inflation and pressurization and automatic pressure relief, can effectively reduce the cost of products and improve the reliability.

Description of the drawings:

fig. 1 is a schematic structural diagram of the product.

Fig. 2 is an exploded view of the components of the product.

Fig. 3 is a schematic structural diagram of the driving wheel of the product.

Fig. 4 is a schematic structural diagram of the rocker arm of the product.

Fig. 5 is a bottom view of the upper cover of the product.

Fig. 6 is a schematic structural diagram of an embodiment 10 of the product.

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

Example 1:

a fluid pump with an automatic pressure relief structure comprises a motor 1, wherein the motor is connected with a shell 2 and fixed, the motor is provided with an output shaft 4, the output shaft is connected with a driving wheel 5, the driving wheel is connected with a rocker arm 6, the rocker arm is connected with a rubber elastic diaphragm member 7, the rubber elastic diaphragm member is connected with a base 8, the base is connected with a fixed seat 9, an elastic member 10 is arranged in the fixed seat, and the fixed seat is connected with an upper cover 3 in a sealing mode. The basic principle is that the volume difference generates airflow with certain pressure, and the pressure difference is balanced and unbalanced to switch on and off the pressure relief structure, namely, the pump is inflated and pressurized when the pump motor rotates, and the pressure relief structure exhausts and relieves pressure when the pump motor stops.

Example 2:

embodiment 1 a take fluid pump of automatic pressure release structure, rubber elasticity diaphragm spare have A room 11 and B room 12, A indoor lower valve piece 13 and upper valve piece 14 of having, B room valve piece in have on 15 and the valve piece 16 down, the elastic component seal into two valve chambeies with the fixing base, the elastic component closes a valve chamber with the upper cover again, A room with B room all have air vent, sealing line, fluid passage, the elastic component have valve chamber 17, the valve chamber in be equipped with No. two elastic diaphragm 18 and No. one elastic diaphragm 19, the upper cover have upper air vent 20, side air vent 21, end air vent 22.

When the pump works, the motor drives the transmission wheel fastened on the output shaft of the motor to rotate, the transmission wheel drives the rocker arm to do reciprocating motion, and the rubber elastic diaphragm piece is fixed on the rocker arm and is stressed to compress in a reciprocating mode. Thus, the two closed chambers of the chamber A and the chamber B of the rubber elastic diaphragm member form a volume difference. The basic elements of the pump thus constitute.

The two chambers of the chamber A and the chamber B are compressed and relaxed alternately, and then the fluid is pumped out and sucked in.

When the chamber A is compressed, the lower valve plate structure at the lower part of the chamber A is closed by the self resilience force, the upper valve plate at the upper part of the chamber A is opened by the pressure of the pressure chamber, and fluid is pumped out and enters the valve chamber through the fluid channel base and the fixed seat.

And at the moment, the corresponding valve plate of the chamber B is in a relaxation process, the structure under the valve plate at the lower part of the chamber B is opened due to the negative pressure of the pressure cavity and is closed by the fluid cavity (the chamber B), and the valve plate at the upper part of the chamber B is closed by the negative pressure of the pressure cavity and the self resilience force.

The two chambers of the chamber A and the chamber B alternate in such a way that fluid is pumped out to and fro and continuously enters the valve cavity through the channel.

The fluid entering the valve cavity expands the first elastic membrane due to the larger internal pressure, the second elastic membrane is sealed with the upper cover, the upper vent hole is sealed, the first elastic membrane deforms under pressure, so that the first elastic membrane is not sealed with the base any more, and the fluid enters the upper cover from the passage;

when the pump stops working, the internal pressure of the valve cavity is reduced, the second elastic diaphragm recovers elasticity and pressure rebounds, and the second elastic diaphragm is not sealed with the upper cover any more. Fluid is vented from the upper vent.

Example 3

The fluid pump with the automatic pressure relief structure in the embodiment comprises a pump with an elastic diaphragm structure, wherein the elastic diaphragm part is provided with a valve plate of a first fluid inlet switch and a valve plate of a second fluid outlet switch, the elastic diaphragm is fixed on a base, and the base is provided with an airflow channel;

example 4

The fluid pump with the automatic pressure relief structure in embodiment 1, wherein the upper cover is provided with a through hole for pressure relief, and the upper cover is provided with a port for pressurizing the pump.

Example 5

The fluid pump with the automatic pressure relief structure according to embodiment 1, wherein the rocker arm is integrally formed, and the rocker arm has a hole through which an air flow passes.

Example 6

The fluid pump with the automatic pressure relief structure in embodiment 1, wherein the housing has a fixed hook, and the housing has an air inlet groove.

Example 7

A fluid pump with an automatic pressure relief structure as in embodiment 1, said base having a sealing surface, said base having an aperture through which air flows, said base having an air flow passage.

Example 8

The fluid pump with the automatic pressure relief structure according to embodiment 1, wherein the elastic member has a sealing line, and the elastic member is an elastic sheet-like resilient structure.

Example 9

The fluid pump with the automatic pressure relief structure in embodiment 1, wherein the transmission wheel has a double-sided groove.

The driving mechanism is provided with a motor which is used as power to drive the first elastic diaphragm of the diaphragm pump.

The fluid control unit, the gas that the air pressure source produces the unit and produces drives the control unit of the air current and makes the first air admission open;

the gas of the hole is sucked into or discharged from the gas flow control unit, wherein the gas flow control unit comprises;

an elastic piece which is arranged between the upper cover of the pump body and the pressure relief structure fixing seat and is provided with a vent and a pressure relief valve,

the first valve characteristic structure of the elastic part is provided with a vent hole and a sealing line, forms a first pressure cavity with the pressure relief structure base, and is communicated with a valve plate of a fluid switch of the pump;

the second valve characteristic structure is provided with a sealing line, forms a second pressure cavity with the pressure relief structure base, is sealed with the upper cover with a through hole, and is communicated with the outside atmosphere; the elastic element and the upper cover form a third pressure cavity.

The upper cover is provided with an air outlet channel of the whole pump module and a port structure connected with the pump.

The transmission mechanism is provided with a transmission wheel with an eccentric conical blind hole which is designed in a certain way, and the center of the transmission wheel is fastened with a through hole.

The transmission structure is an integrally formed rocker arm with an air inlet through hole of the pump, and two sides of the rocker arm are connected with the elastic diaphragm. The rocker arm is provided with a ball head shaft structure with two smooth ends, one end of the rocker arm is matched with the conical blind hole of the driving wheel, and the other end of the rocker arm is connected with the base to form a fulcrum.

The driving wheel of the driving mechanism is fixed on the output shaft of the motor;

the motor is provided with a fastening screw hole, and the pump body shell is fastened with the motor through the screw hole.

The shell is provided with a vent groove structure and a clamping hook structure so as to fix the pump body and the pressure relief structure, and can also be in a screw structure, a clamping buckle structure and other forms of structures.

Example 10

In the fluid pump with the automatic pressure relief structure according to the embodiment, the structure of the valve plate for pressure relief is changed. The principle is the same, and the difference of the gas circuit is that the gas flow is discharged from the lower half part of the attached figure 6 through the circular thin-wall valve plate.

The number of the two pump chambers can be 1 or a plurality, but the principle structure is the key point for protection. The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A fluid pump with an automatic pressure relief structure comprises a motor and is characterized in that the motor is connected with a shell and fixed, the motor is provided with an output shaft, the output shaft is connected with a transmission wheel, the transmission wheel is connected with a rocker arm, the rocker arm is connected with a rubber elastic diaphragm piece, the rubber elastic diaphragm piece is connected with a base, the base is connected with a fixed seat, an elastic piece is arranged in the fixed seat, and the fixed seat is connected with an upper cover in a sealing way; the rubber elastic diaphragm piece is provided with a chamber A and a chamber B, a lower valve plate and an upper valve plate are arranged in the chamber A, a valve plate and a valve plate are arranged in the chamber B, the chamber A and the chamber B are provided with vent holes, sealing lines and fluid channels, a vent flow channel is arranged between the chamber A and the chamber B, the elastic piece is provided with a valve cavity, the elastic piece and the fixing seat are sealed to form two valve cavities, the elastic piece and the upper cover are sealed to form one valve cavity, the upper cover is provided with an upper vent hole, a side vent hole and a bottom vent hole, and the upper vent hole, the side vent hole and the bottom vent hole are provided with a vent channel.

2. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said upper cover has a through hole for pressure relief, and said upper cover has a port for pressurizing the pump.

3. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said rocker arm is integrally formed and has a hole for passing an air flow.

4. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said housing has a fixed hook and said housing has an air inlet groove.

5. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said base has a sealing surface, said base has an aperture for passing an air flow therethrough, and said base has an air flow passage.

6. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said elastic member has a sealing line, and said elastic member is an elastic sheet-like resilient structure.

7. The fluid pump with the automatic pressure relief structure as claimed in claim 1, wherein said driving wheel has a double-sided groove.