CN212717108U

CN212717108U - Pressure-resistant diaphragm pump with quick connector

Info

Publication number: CN212717108U
Application number: CN202021383679.4U
Authority: CN
Inventors: 林锡臻
Original assignee: Fujian Aidi Electric Co ltd
Current assignee: Fujian Aidi Electric Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-03-16
Anticipated expiration: 2030-07-14

Abstract

The utility model provides a pressure-resistant diaphragm pump with a quick connector, which comprises a pump head and a pump cover, wherein a water inlet cavity, a water outlet cavity and a working cavity are arranged in the pump head; the pump head is provided with spring columns in the water inlet cavity and the water outlet cavity, a backflow water inlet valve seat is arranged between the water inlet cavity and the working cavity, a water inlet channel and a backflow channel are arranged on the backflow water inlet valve seat, and a water inlet valve core and a backflow valve core are respectively arranged on two sides of the backflow water inlet valve seat; a water inlet spring is arranged between the water inlet valve core and the pump cover, a return spring is arranged between the return valve core and the spring column, and a return hole communicated with the return channel is arranged on the pump cover. The utility model makes the diaphragm pump suitable for different connecting pipes by using the design of the quick connector, and the connector is fast and convenient to replace; through setting up backward flow inlet valve seat and backflow case, automatic backward flow when making the interior water pressure of pump head too high improves the life of diaphragm pump.

Description

Pressure-resistant diaphragm pump with quick connector

Technical Field

The utility model relates to a diaphragm pump especially indicates a withstand voltage diaphragm pump with quick-operation joint.

Background

At present, the electric water supply pump is widely applied to the fields of agricultural spraying, vehicle and ship water supply, urban water supply, cleaning and food processing; diaphragm pumps typically include a motor, bearings, eccentric wheels, a wobble bracket, a diaphragm, inlet and outlet valves, a valve cartridge, and a spring.

The working principle is as follows: when the diaphragm pump works at the on-point, the rotation of a motor rotating shaft on the diaphragm pump drives the eccentric wheel to swing, and then the motor is rotated by the bearing to be converted into the back-and-forth reciprocating motion of the eccentric wheel. Meanwhile, the swing support is connected with the diaphragm and drives the diaphragm to reciprocate. Therefore, the volume of the cavity matched with the diaphragm and the water inlet valve is changed continuously, the cavity generates pressure difference continuously, and the pressurizing and draining functions of the diaphragm pump are realized finally.

The existing diaphragm pump on the market at present has the defect that the connection joint of a water pump is single, pump bodies with different joints are required to be matched with pipelines, and when the working water flow pressure of the diaphragm pump is higher, liquid seepage easily occurs between the pump cover and the pump head of the diaphragm pump.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a withstand voltage diaphragm pump with quick-operation joint has and solves the diaphragm pump that has on the market current and has the single drawback of water pump hookup joint, needs the pump body of different joint to carry out the mating line, and when diaphragm pump work rivers pressure was higher, takes place the function of liquid extravasation scheduling problem easily between the pump cover of diaphragm pump and the pump head. In order to achieve the above purpose, the utility model adopts the following technical scheme:

(II) technical scheme

A pressure-resistant diaphragm pump with a quick connector comprises a pump head, a diaphragm and a pump cover, wherein a water inlet cavity and a water outlet cavity are arranged in the pump head, the diaphragm is arranged at two ends of the pump head, the pump cover is fixed on the diaphragm, a working cavity is formed between the pump cover and the diaphragm, the water inlet cavity is connected with a water inlet pipe, and the water outlet cavity is connected with a water outlet pipe;

clamping grooves are formed in two sides of the pump head, clamping rings are fixed in the clamping grooves, annular clamping blocks are arranged on the water inlet pipe and the water outlet pipe, and the clamping rings are clamped on the clamping blocks to fix the water inlet pipe and the water outlet pipe on the pump head;

the pump head is provided with spring columns in the water inlet cavity and the water outlet cavity, a backflow water inlet valve seat is arranged between the water inlet cavity and the working cavity, a water inlet channel and a backflow channel are arranged on the backflow water inlet valve seat, one side of the backflow water inlet valve seat, which is close to the working cavity, is provided with a water inlet valve core, and the other side of the backflow valve core is provided with a backflow valve core; the water inlet valve core closes the water inlet channel, and a water inlet spring is arranged between the water inlet valve core and the pump cover; the backflow valve core closes the backflow channel, a backflow spring is arranged between the backflow valve core and the spring column, and a backflow hole communicated with the backflow channel is formed in the pump cover;

a water outlet valve seat is arranged between the water outlet cavity and the working cavity, a water outlet valve core is arranged on one side, close to the water outlet cavity, of the water outlet valve seat, a water outlet spring is arranged between the water outlet valve core and the spring column, and the elastic coefficient of the water outlet spring is smaller than that of the return spring.

Furthermore, the bottom of the snap ring is provided with a raised shifting block.

Further, the bottom of the clamping groove is provided with a limiting block.

Further, the backflow channel is arranged at the center of the backflow water inlet valve seat, and the water inlet channel is formed by a plurality of through holes which are formed around the backflow channel.

Furthermore, the backflow channel is protruded from the backflow water inlet valve seat in a columnar shape, the water inlet valve core is sleeved on the backflow channel, and the top of the backflow channel is arranged in the water inlet valve core and matched with the pump cover.

Furthermore, two sides of the swing support are provided with two-way ribs.

Furthermore, sealing sheets are arranged on the periphery of the membrane.

(III) advantageous effects

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly:

1. the diaphragm pump is suitable for different connecting pipes by utilizing the design of the quick connector, and the connector is fast and convenient to replace;

2. by arranging the backflow water inlet valve seat and the backflow valve core, the water in the pump head automatically flows back when the water pressure in the pump head is too high, the pump head is prevented from bearing large water pressure, and the service life of the diaphragm pump is prolonged;

3. the elastic coefficient of the return spring is larger than that of the water outlet spring, so that no return flow is generated under the set pressure;

4. the two sides of the swing bracket are provided with the bidirectional ribs, so that the swing bracket is prevented from being elongated and deformed under the driving of a bearing and water pressure, the swing stroke of the eccentric wheel is reduced, and the flow rate is reduced;

5. the sealing pieces are arranged on the periphery of the diaphragm, so that the sealing effect of the whole face is formed, and the sealing performance is improved.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the overall explosion of the present invention;

fig. 2 is an exploded view of the assembly of the water outlet tube 4 with the pump head 1;

fig. 3 is a sectional view of the mounting structure of the water inlet pipe 3 and the water outlet pipe 4 with the pump head 1;

fig. 4 is an overall sectional view of the present invention;

fig. 5 is a half sectional view of the inside of the pump head 1 of the present invention;

FIG. 6 is an exploded view of the assembly of the return inlet valve seat 5 on one side of the working chamber 103;

FIG. 7 is an exploded view of the assembly of the return inlet valve seat 5 on one side of the inlet chamber 101;

fig. 8 is a schematic structural view of the swing bracket 14;

fig. 9 is a schematic view of the structure of the diaphragm 13.

The reference numbers illustrate:

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 3, a pressure-resistant diaphragm pump with a quick connector includes a pump head 1, a diaphragm 13 and a pump cover 15, wherein a water inlet cavity 101 and a water outlet cavity 102 are arranged in the pump head 1, the diaphragm 13 is disposed at two ends of the pump head 1, the pump cover 15 is fixed on the diaphragm 13, a working cavity is formed between the pump cover 15 and the diaphragm 13, the water inlet cavity 101 is connected with a water inlet pipe 3, and the water outlet cavity 102 is connected with a water outlet pipe 4;

clamping grooves 105 are formed in two sides of the pump head 1, clamping rings 2 are fixed in the clamping grooves 105, annular clamping blocks 401 are arranged on the water inlet pipe 3 and the water outlet pipe 4, the clamping rings 2 are clamped on the clamping blocks 401, and the water inlet pipe 3 and the water outlet pipe 4 are fixed on the pump head 1;

the pump head 1 is provided with spring columns 104 in the water inlet cavity 101 and the water outlet cavity 102, a backflow water inlet valve seat 5 is arranged between the water inlet cavity 101 and the working cavity 103, the backflow water inlet valve seat 5 is provided with a water inlet channel 501 and a backflow channel 502, one side of the backflow water inlet valve seat, which is close to the working cavity 103, is provided with a water inlet valve core 6, and the other side of the backflow water inlet valve core is provided with a backflow valve core 8; the water inlet valve core 6 closes the water inlet channel 501, and a water inlet spring 7 is arranged between the water inlet valve core and the pump cover 15; the return valve core 8 closes the return channel 502, a return spring 9 is arranged between the return valve core and the spring column 104, and a return hole 1501 communicated with the return channel 502 is formed in the pump cover 15;

a water outlet valve seat 10 is arranged between the water outlet cavity 102 and the working cavity 103, a water outlet valve core 11 is arranged on one side of the water outlet valve seat 10 close to the water outlet cavity 102, a water outlet spring 12 is arranged between the water outlet valve core 11 and the spring column 104, and the elastic coefficient of the water outlet spring 12 is smaller than that of the return spring 9.

For convenient taking off, the bottom of snap ring 2 is equipped with bellied shifting block 201.

For preventing the snap ring 2 from falling off, the bottom of the clamping groove 105 is provided with a limiting block 106, and the bottom of the snap ring 2 is supported by the limiting block 106 after being inserted into the clamping groove 105.

In order to ensure the water inflow, the backflow channel 502 is arranged in the center of the backflow water inlet valve seat 5, and the water inlet channel 501 is composed of a plurality of through holes arranged around the backflow channel 502.

In order to ensure the sealing performance of the backflow channel 502 during the normal operation of the water pump, the backflow channel 502 is a columnar protrusion on the backflow water inlet valve seat 5, the water inlet valve core 6 is sleeved on the backflow channel 502, and the top of the backflow channel 502 is arranged in the water inlet valve core 6 and matched with the pump cover 15.

In order to prevent the swing bracket 14 from being elongated and deformed under the driving of a bearing and water pressure, which results in the reduction of the swing stroke of the eccentric wheel 18 and the reduction of the flow rate, two sides of the swing bracket 14 are provided with two-way ribs 1401, that is, two ends of the two-way ribs 1401 are connected with two ends of the swing bracket 14, and the sides of the two-way ribs 1401 are also connected with the sides of the swing bracket through the ribs.

The sealing sheets 1301 are arranged on the periphery of the membrane 13 to form a whole-surface sealing effect and improve the sealing performance.

The principle of the utility model is that:

installing and replacing a connector: taking the water outlet pipe 4 as an example, during installation, the water outlet pipe 4 is firstly inserted into the pump head 1, then the clamping ring 2 is inserted into the clamping groove 105, the clamping block 401 is positioned between the clamping ring 2 and the pump head 1, and the limiting block 106 can support the clamping ring 2 to prevent loosening; when the connector is disassembled, the clamping ring 2 is taken down through the shifting block 201, and the water outlet pipe 4 can be pulled out to be replaced, so that the connector is convenient and quick, and the use requirements of customers on different connectors can be met;

pressurizing: the eccentric wheel 16 is driven by the motor 17 to rotate and drive the swing bracket 14 to swing, so that the diaphragm 13 is deformed in a reciprocating manner, the volume of the working cavity 103 is changed, and water is pressurized, specifically: the inlet water flows into the inlet cavity 101 from the inlet pipe 3 and then jacks up the inlet valve core 6, at the moment, the inlet spring 7 is compressed, and the inlet water flows into the working cavity 103 from the inlet channel 501; then the diaphragm 13 is deformed under the action of the swing bracket 14, so that the volume of the working cavity 103 is reduced, the water pressure is increased, the water outlet valve core 11 is jacked open when the water pressure reaches the set pressure, the water outlet spring 12 is compressed at the moment, and the outlet water flows into the water outlet cavity 102 and is discharged by the water outlet pipe 4;

refluxing: when the water outlet pipe 4 is blocked or the water in the working cavity 103 cannot be discharged due to other reasons, so that the water pressure in the working cavity is too high in the next working cycle, the water flow enters the backflow channel 502 through the backflow hole 1501 and jacks up the backflow valve core 8, the backflow spring 9 is compressed at the moment, the water flow enters the water inlet cavity 101, backflow is realized, the pump head is prevented from bearing larger pressure, and the service life of the diaphragm pump is prolonged.

The design key points of the utility model lie in that the design of the quick connector is utilized to lead the diaphragm pump to be suitable for different connecting pipes, and the connector is fast and convenient to be replaced; through setting up backward flow inlet valve seat and reflux case, automatic backward flow when making the interior water pressure of pump head too high avoids the pump head to bear great water pressure, improves the life of diaphragm pump.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a withstand voltage diaphragm pump with quick-operation joint, includes pump head (1), diaphragm (13) and pump cover (15), be equipped with intake antrum (101) and play water cavity (102) in pump head (1), diaphragm (13) are arranged in pump head (1) both ends, pump cover (15) are fixed on diaphragm (13), form the working chamber between pump cover (15) and diaphragm (13), intake antrum (101) and inlet tube (3) link to each other go out water cavity (102) and outlet pipe (4) and link to each other its characterized in that:

clamping grooves (105) are formed in two sides of the pump head (1), a clamping ring (2) is fixed in each clamping groove (105), annular clamping blocks (401) are arranged on the water inlet pipe (3) and the water outlet pipe (4), and the clamping blocks (401) are located between the clamping rings (2) and the pump head (1);

the pump head (1) is provided with spring columns (104) in the water inlet cavity (101) and the water outlet cavity (102), a backflow water inlet valve seat (5) is arranged between the water inlet cavity (101) and the working cavity (103), a water inlet channel (501) and a backflow channel (502) are arranged on the backflow water inlet valve seat (5), a water inlet valve core (6) is arranged on one side of the backflow water inlet valve seat close to the working cavity (103), and a backflow valve core (8) is arranged on the other side of the backflow water inlet valve seat; the water inlet valve core (6) closes the water inlet channel (501), and a water inlet spring (7) is arranged between the water inlet valve core and the pump cover (15); the backflow valve core (8) closes the backflow channel (502), a backflow spring (9) is arranged between the backflow valve core and the spring column (104), and a backflow hole (1501) communicated with the backflow channel (502) is formed in the pump cover (15);

a water outlet valve seat (10) is arranged between the water outlet cavity (102) and the working cavity (103), a water outlet valve core (11) is arranged on one side, close to the water outlet cavity (102), of the water outlet valve seat (10), a water outlet spring (12) is arranged between the water outlet valve core (11) and the spring column (104), and the elastic coefficient of the water outlet spring (12) is smaller than that of the return spring (9).

2. A pressure-resistant diaphragm pump having a quick coupling as set forth in claim 1, wherein: the bottom of the clamping ring (2) is provided with a raised shifting block (201).

3. A pressure-resistant diaphragm pump having a quick coupling as set forth in claim 1, wherein: the bottom of the clamping groove (105) is provided with a limiting block (106).

4. A pressure-resistant diaphragm pump having a quick coupling as set forth in claim 1, wherein: the backflow channel (502) is arranged in the center of the backflow water inlet valve seat (5), and the water inlet channel (501) is composed of a plurality of through holes arranged around the backflow channel (502).

5. A pressure resistant diaphragm pump with quick connect as set forth in claim 4 wherein: the backflow channel (502) is in a columnar shape and protrudes from the backflow water inlet valve seat (5), the water inlet valve core (6) is sleeved on the backflow channel (502), and the top of the backflow channel (502) is arranged in the water inlet valve core (6) and matched with the pump cover (15).

6. A pressure-resistant diaphragm pump having a quick coupling as set forth in claim 1, wherein: and sealing pieces (1301) are arranged on the periphery of the membrane (13).