CN111828291A - Seal assembly with bidirectional non-return function and diaphragm pump - Google Patents

Abstract

The invention discloses a sealing assembly with a bidirectional check function and a diaphragm pump, which comprise an upper cover with a water inlet hole, a pressurizing bin with a water outlet hole and a one-way base with water inlets and water outlets which are uniformly distributed and in one-to-one correspondence, wherein the one-way base is provided with a one-way valve for one-way sealing of the water inlet and a backflow-proof diaphragm for one-way sealing of the water outlet, the pressurizing bin is internally provided with a water inlet cavity for communicating the water inlet hole with the water inlet hole, a water outlet cavity communicated with the water outlet hole and a pressurizing cavity surrounding the water outlet cavity and communicated with the water outlet, a check diaphragm for realizing the sealing or opening of the water outlet cavity and the pressurizing cavity is arranged above the pressurizing bin, the upper cover is provided with a side hole communicated with the water inlet hole, and a water accumulation cavity communicated with the side hole is arranged between the upper surface of the. The invention can realize that the phenomenon of water outlet or water dripping of the water outlet hole can not be generated even if the water inlet hole has pressure in the non-working state, and the requirement of the diaphragm pump on the installation position is reduced.

Description

Seal assembly with bidirectional non-return function and diaphragm pump

Technical Field

The invention relates to a sealing assembly and a diaphragm pump, in particular to a sealing assembly with a bidirectional non-return function and a diaphragm pump.

Background

The diaphragm pump is widely applied to industrial products such as water dispensers, coffee machines, water purifiers, air purifiers, movable bathing machines, tea making machines, water circulation equipment, particularly the field of drinking water and the like. The body type is small, the variety is various, the performance requirement difference is large, and the like.

The miniature diaphragm pump on the current market has obvious shortcomings due to structural factors: when the diaphragm pump is below the liquid level, the water inlet also has water pressure when the motor is out of work, because of the check valve only has reverse contrary function, does not have forward contrary function, so rivers still can flow from the delivery port. Therefore, the existing diaphragm pump needs to be installed above the liquid level, and the water inlet is required to have no pressure, so that the installation scene of the diaphragm pump is limited, the applicability of the diaphragm pump has defects, and the market requirement cannot be met.

Thus, there is a need to solve the above problems.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a sealing assembly with a bidirectional non-return function, which can ensure that no liquid flows out of a water outlet when a water inlet hole has pressure in a non-working state.

The second purpose of the invention is to provide a diaphragm pump based on the sealing assembly with the bidirectional non-return function.

The technical scheme is as follows: in order to achieve the purpose, the invention discloses a sealing assembly with a bidirectional check function, which comprises an upper cover with a water inlet hole, a pressurizing bin with a water outlet hole and a one-way base with a water inlet and a water outlet which are uniformly distributed and in one-to-one correspondence, wherein the one-way base is provided with a one-way valve for one-way sealing of the water inlet and an anti-backflow diaphragm for one-way sealing of the water outlet, the pressurizing bin is internally provided with a water inlet cavity for communicating the water inlet hole and the water inlet, a water outlet cavity communicated with the water outlet hole and a pressurizing cavity surrounding the water outlet cavity and communicated with the water outlet, the check diaphragm for sealing or opening the water outlet cavity and the pressurizing cavity is arranged above the pressurizing bin, the upper cover is provided with a side hole communicated with the water inlet hole, and a water accumulation cavity communicated with the side hole is arranged between the upper surface of the check diaphragm and the.

And the water pressure stress area of the upper surface of the non-return diaphragm is larger than that of the lower surface of the non-return diaphragm.

Preferably, the ponding intracavity is provided with helping hand spring, and helping hand spring's upper end butt is in the upper cover, and helping hand spring's lower extreme butt is in contrary diaphragm that ends.

Furthermore, the power spring is in a compressed state.

Furthermore, contrary diaphragm portion that ends is including the intermediate film portion that is used for the shutoff to go out the mouth end of water cavity, with the annular membrane portion that the outer wall looks adaptation of pressure boost chamber is used for the shutoff to increase pressure cavity mouth end and have with the plane membrane portion of the water hole of crossing of intake antrum looks adaptation, wherein the top of intermediate film portion is worn to be equipped with helping hand spring, the below shutoff of intermediate film portion is in the top of going out the water cavity.

Preferably, the water passing cross-sectional area of the side hole is smaller than that of the water inlet hole.

Furthermore, still have the reference column with one-way base looks adaptation on the pressure boost storehouse, and pressure boost storehouse and one-way base adopt ultrasonic welding fixed.

The invention relates to a diaphragm pump based on a sealing assembly with a bidirectional non-return function, which comprises the sealing assembly with the bidirectional non-return function, a piston assembly capable of realizing water inlet and water discharge through compressible and stretchable movement and a motor assembly for driving the piston assembly to move, wherein the sealing assembly with the bidirectional non-return function is sequentially connected through an assembly bolt.

The piston assembly comprises a piston support, porous pistons, a multi-fork turntable and a turntable shaft, wherein the porous pistons are arranged on the piston support, piston holes and piston pins correspond to the water inlets in number one by one, the multi-fork turntable is connected with the piston pins of the porous pistons, and the turntable shaft penetrates through the multi-fork turntable.

Preferably, the driving assembly comprises a motor fixing seat, a motor fixed on the motor fixing seat and an eccentric wheel connected with an output shaft of the motor, the eccentric wheel is connected with the turntable shaft, the motor starts to drive the eccentric wheel to rotate, and the turntable shaft and the multi-fork turntable drive the porous piston to reciprocate vertically to realize piston compression and stretching.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the matching of the non-return diaphragm and the pressurizing bin can prevent water from flowing out of the water outlet hole or dripping even if the water inlet hole has pressure in an inoperative state, so that the requirement of the diaphragm pump on the installation position is greatly reduced, and the water can not flow out of the water outlet hole or drip even if the diaphragm pump is installed below the liquid level of a water tank; the power spring is additionally arranged to further increase the total pressure on the upper surface of the check diaphragm, so that the phenomenon that water is discharged from a water outlet hole or drips cannot be generated even if the water inlet hole has pressure in a non-working state is better avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a top view of the one-way base of the present invention;

FIG. 5 is a cross-sectional view of the one-way seat of the present invention;

FIG. 6 is a schematic structural view of the upper cover of the present invention;

FIG. 7 is a top view of a pressurized cartridge of the present invention;

FIG. 8 is a schematic structural view of a pressurized cabin according to the present invention;

FIG. 9 is a cross-sectional view of a pressurized cartridge of the present invention;

FIG. 10 is a schematic structural view of a check diaphragm according to the present invention.

FIG. 11 is a schematic view showing the flow of water when the piston is extended in the power-on state of the present invention;

FIG. 12 is a schematic view of the flow of water during compression of the piston in the power-on state of the present invention;

FIG. 13 is a schematic view of the water flow in the power-off state of the present invention.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

As shown in fig. 1, the diaphragm pump of the present invention includes a sealing assembly having a bidirectional check function, a piston assembly, a motor assembly, and an assembling bolt, and the sealing assembly having the bidirectional check function, the piston assembly, and the motor assembly are sequentially assembled and connected by the assembling bolt to form the diaphragm pump.

As shown in fig. 1, 2 and 3, the sealing assembly with the bidirectional check function of the present invention includes an upper cover 1, a pressurizing bin 2, a one-way base 3, a one-way valve 4, a backflow prevention diaphragm 5, a check diaphragm 6 and a power spring 7. As shown in fig. 6, the upper cover 1 is provided with a water inlet 101 and a side hole 102 communicated with the water inlet 101, the water passing cross-sectional area of the side hole 102 is smaller than that of the water inlet 101, and the water passing cross-sectional area of the side hole 102 can be set to 1/3 of the water passing cross-sectional area of the water inlet 101; a water accumulation cavity 103 communicated with the side hole 102 is formed between the lower part of the upper cover 1 and the upper surface of the check diaphragm 6, water flows into the upper cover 1, most of water can flow into the water inlet hole 101, a small amount of water flows into the side hole 102 and enters the water accumulation cavity 103, water pressure is generated above the check diaphragm 6, the water pressure bearing surface of the upper surface of the check diaphragm 6 is the upper surface of the check diaphragm positioned in the water accumulation cavity, and the water pressure bearing surface of the lower surface of the check diaphragm 6 is the lower surface of the check diaphragm positioned above the pressurization cavity 204, so that the water pressure bearing area of the upper surface of the check diaphragm 6 is larger than that of the lower surface of the check diaphragm 6.

As shown in fig. 7, 8 and 9, the pressurizing chamber 2 has a water outlet 201, a water inlet 202, a water outlet 203, a pressurizing chamber 204 and a positioning column 205 therein, the water inlet 202 is used for communicating the water inlet 101 of the upper cover 1 with the water inlet 301 of the one-way base 3, the water outlet 203 is communicated with the water outlet 201, the pressurizing chamber 204 surrounds the water outlet 203 and is communicated with the water outlet 302 of the one-way base 3, the positioning columns 205 are uniformly distributed on the pressurizing chamber 2 and are adapted to the one-way base, and after the positioning column 205 of the pressurizing chamber 2 is inserted into the positioning hole of the one-way base 3, the pressurizing chamber 2 and the one-way base 3 are fixed by ultrasonic welding.

As shown in fig. 4 and 5, the one-way base 3 is provided with water inlets 301 and water outlets 302 which are uniformly distributed and in one-to-one correspondence, the one-way base 3 is further provided with a first positioning hole 303 for penetrating the one-way valve 4 and a second positioning hole 304 for penetrating the anti-backflow membrane 6, in this embodiment, the number of the water inlets 301 and the number of the water outlets 302 are 3, the number of the water inlets 301 and the number of the water outlets 302 are set to correspond to the number of the piston cavities of the porous piston 9, and the number of the one-way valves 4 is also corresponding. According to the invention, the water inlet 301 comprises a plurality of small holes, each small hole is arranged around the first positioning hole 303, the one-way valve 4 is arranged on the first positioning hole 303 in a penetrating manner, each small hole of the water inlet 301 can be sealed in a one-way manner, and the one-way valve 4 can prevent water flow from flowing out of the water inlet when the piston is compressed. The anti-backflow membrane 5 penetrates through the second positioning hole 304, the anti-backflow membrane 5 can be a multi-flap membrane, each flap of the multi-flap membrane is independent of each other, each flap corresponds to the water outlet 302 of one-way base 3, and the one-way sealed water outlet 302 can be achieved.

As shown in fig. 10, the check diaphragm 6 is located above the pressurizing bin 2 for sealing or opening the water outlet cavity 203 and the pressurizing cavity 204, the check diaphragm 6 includes a middle diaphragm portion 601, an annular diaphragm portion 602 and a planar diaphragm portion 604, the middle diaphragm portion 601 is used for sealing an upper opening end of the water outlet cavity 203, the annular diaphragm portion 602 is adapted to an outer wall of the pressurizing cavity 204 for sealing an upper opening end of the pressurizing cavity 204, the planar diaphragm portion 604 is provided with a water through hole 603 adapted to the water inlet cavity 202, a boosting spring 7 is sleeved above the middle diaphragm portion 601, and a lower portion of the middle diaphragm portion 601 is sealed above the water outlet cavity 203. The boosting spring 73 is positioned in the water accumulation cavity 103, the upper end of the boosting spring 7 abuts against the upper cover 1, the lower end of the boosting spring 7 abuts against the non-return diaphragm 5 and is sleeved on the middle diaphragm part 601, the boosting spring 7 is in a compressed state, and the pre-pressure of the boosting spring 7 is 1N-2N. The non-return diaphragm 6 is arranged on the pressurizing bin 2, the boosting spring 7 is sleeved on the non-return diaphragm 6, the upper cover 1 is pressed on the boosting spring 7, and the upper cover 1 is fixed on the pressurizing bin 2 through the assembling bolt 15.

The piston assembly comprises a piston support 8, a porous piston 9, a multi-fork rotary table 10 and a rotary table shaft 11, wherein the porous piston 9 is arranged on the piston support 8, the porous piston 9 is provided with a plurality of piston holes which are uniformly distributed and piston pins with corresponding number, and the number of the piston holes and the number of the piston pins are respectively 3. A plurality of connecting holes are uniformly distributed on the multi-fork turntable 10, the number of the connecting holes is 3, and each piston pin of the multi-hole piston 9 correspondingly penetrates through each connecting hole of the multi-fork turntable; the turntable shaft 11 is fixedly connected with the multi-fork turntable 10, and the two can be molded into a whole.

The driving assembly comprises a motor fixing seat 12, a motor 13 fixed on the motor fixing seat 12 through a bolt 16 and an eccentric wheel 14 connected with an output shaft of the motor, wherein the eccentric wheel 14 is connected with a turntable shaft 11, the motor 13 starts to drive the eccentric wheel 14 to rotate, and the turntable shaft 11 and a multi-fork turntable 10 drive a porous piston 9 to reciprocate vertically to realize piston compression and stretching; the motor of the invention drives the eccentric wheel to do reciprocating motion in a circulating way, the eccentric wheel drives the multi-fork turntable to do reciprocating motion in a Z direction, the multi-fork turntable drives the porous piston to do circulating compression motion in the Z direction, and the action of water absorption and water discharge is continuously carried out in the cavity compression motion.

As shown in fig. 11 and 12, when the motor is powered on, the motor drives the eccentric wheel to rotate, the eccentric wheel drives the turntable shaft and the multi-fork turntable to move, the driving device converts the rotation motion into Z-direction motion, and the multi-fork turntable is connected with the porous piston, so that each piston cavity of the porous piston sequentially performs compression and stretching motion. When the stretching movement is carried out, the piston cavity absorbs water, the one-way valve is opened under the action of the absorption force, water flow enters the piston cavity through the water inlet hole of the upper cover, the water inlet cavity of the pressurizing bin and the water inlet of the one-way base in sequence, and the anti-backflow membrane seals the water outlet of the one-way base under the action of the absorption force; when piston cavity compression, the check valve receives the effect of pressure can be sealed with the water inlet of one-way base, and the effect that the anti-return diaphragm received pressure can be opened with the delivery port of one-way base, the water in the piston cavity can flow in the pressure boost intracavity in pressure boost storehouse from the delivery port of one-way base, make the pressure of contrary diaphragm below be greater than the pressure of top, contrary diaphragm is washed away from the upper end in pressure boost chamber by water pressure this moment, contrary diaphragm is opened, rivers are by the upper end in pressure boost chamber inflow water outlet chamber, and discharge through the apopore.

As shown in fig. 13, after the motor is powered off and stopped, if there is still water pressure at the water inlet of the upper cover, part of the water flow passes through the water inlet and flows into the water accumulation cavity above the check membrane preferentially through the side hole, most of the water flow passes through the water inlet, the water inlet cavity of the pressurizing bin and the water inlet of the one-way base in sequence and enters the piston cavity, and then passes through the water outlet of the one-way base and enters the pressurizing cavity to the lower side of the check membrane; at the moment, because the pressure above and below the non-return diaphragm is the same, but because the water pressure stress area of the upper surface of the non-return diaphragm is larger than that of the lower surface of the non-return diaphragm and the pre-pressure of the power-assisted spring is also provided, the total pressure above the non-return diaphragm is larger than the pressure below the non-return diaphragm, so that the water flow cannot impact the non-return diaphragm even though the water flow flows into the pressurizing cavity under the condition that the motor does not operate; thereby ensuring that no water flows out of the water outlet holes.

The sealing assembly with the bidirectional non-return function of the invention realizes that the phenomenon of water outlet or water dripping of the water outlet cannot be generated even if the pressure is applied to the water inlet in the non-working state by additionally arranging the non-return diaphragm, thereby greatly reducing the requirement of the diaphragm pump on the installation position, and avoiding the phenomenon of water outlet or water dripping of the water outlet even if the diaphragm pump is installed below the liquid level of the water tank.

Claims (10)

1. The utility model provides a seal assembly with two-way contrary function that ends which characterized in that: comprises an upper cover (1) with a water inlet hole (101), a pressurizing bin (2) with a water outlet hole (201) and a one-way base (3) with a water inlet (301) and a water outlet (302) which are uniformly distributed and in one-to-one correspondence, wherein the one-way base (3) is provided with a one-way valve (4) for sealing the water inlet (301) in a one-way manner and an anti-backflow membrane (5) for sealing the water outlet (302) in a one-way manner in a penetrating manner, the pressurizing bin (2) is internally provided with a water inlet cavity (202) for communicating the water inlet hole (101) with the water inlet (301), a water outlet cavity (203) communicated with a water outlet hole (201) and a pressurizing cavity (204) surrounding the water outlet cavity (203) and communicated with the water outlet (302), a non-return membrane (6) for sealing or opening the water outlet cavity (203) and the pressurizing cavity (204) is arranged above the pressurizing bin (2), the upper cover (1) is provided with a side hole (, and a water accumulation cavity (103) communicated with the side hole (102) is arranged between the upper surface of the non-return diaphragm (6) and the upper cover (1).

2. The seal assembly with bidirectional backstopping function of claim 1, wherein: the water pressure stress area of the upper surface of the non-return diaphragm (6) is larger than that of the lower surface of the non-return diaphragm (6).

3. The seal assembly with bidirectional backstopping function of claim 1, wherein: and a power-assisted spring (7) is arranged in the water accumulation cavity (103), the upper end of the power-assisted spring (7) is abutted against the upper cover (1), and the lower end of the power-assisted spring (7) is abutted against the non-return diaphragm (5).

4. The seal assembly with bidirectional backstopping function of claim 3, wherein: the boosting spring (7) is in a compressed state.

5. The seal assembly with bidirectional backstopping function of claim 3, wherein: the non-return diaphragm (6) comprises an intermediate membrane part (601) used for plugging the upper end of the water outlet cavity, an annular membrane part (602) matched with the outer wall of the pressurizing cavity and used for plugging the upper end of the pressurizing cavity and a plane membrane part (604) provided with a water passing hole (603) matched with the water inlet cavity, wherein a power-assisted spring (7) is arranged above the intermediate membrane part (601) in a penetrating mode, and the lower portion of the intermediate membrane part (601) is plugged above the water outlet cavity (203).

6. The seal assembly with bidirectional backstopping function of claim 1, wherein: the water passing cross-sectional area of the side hole (102) is smaller than that of the water inlet hole (101).

7. The seal assembly with bidirectional backstopping function of claim 1, wherein: still have on pressure boost storehouse (2) with one-way base looks adaptation reference column (205), and pressure boost storehouse (2) and one-way base (3) adopt ultrasonic welding fixed.

8. A diaphragm pump based on the sealing assembly with bidirectional check function of any one of claims 1 to 7, characterized in that: the device comprises a sealing assembly with a bidirectional non-return function, a piston assembly capable of realizing water inlet and water discharge through compressible and tensile movement and a motor assembly for driving the piston assembly to move, wherein the sealing assembly, the piston assembly and the motor assembly are sequentially connected through an assembly bolt.

9. The diaphragm pump of claim 8, wherein: the piston assembly comprises a piston support (8), porous pistons (9) which are arranged on the piston support and correspond to the piston holes, the piston pins and the water inlets in a one-to-one mode, a multi-fork turntable (10) connected with the piston pins of the porous pistons, and a turntable shaft (11) arranged on the multi-fork turntable in a penetrating mode.

10. The diaphragm pump of claim 9, wherein: the driving assembly comprises a motor fixing seat (12), a motor (13) fixed on the motor fixing seat and an eccentric wheel (14) connected with an output shaft of the motor, the eccentric wheel (14) is connected with a turntable shaft (11), the motor (13) starts to drive the eccentric wheel (14) to rotate, and the turntable shaft (11) and the multi-fork turntable (10) drive the porous piston (9) to reciprocate vertically to realize piston compression and stretching.

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