CN216407082U - Self-draining vacuum pump - Google Patents
Self-draining vacuum pump Download PDFInfo
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- CN216407082U CN216407082U CN202122904325.0U CN202122904325U CN216407082U CN 216407082 U CN216407082 U CN 216407082U CN 202122904325 U CN202122904325 U CN 202122904325U CN 216407082 U CN216407082 U CN 216407082U
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Abstract
The utility model discloses a self-drainage vacuum pump.A motor is arranged below a base, an air bag seat is assembled above the base, an air bag is arranged on the air bag seat, and a transmission cavity is formed among the air bag, the air bag seat and the base; a valve seat and a top cover are sequentially assembled above the air bag seat; the space between the valve seat and the top cover is divided into an air inlet cavity and an air outlet cavity; a check seat is also arranged in the air inlet cavity, the check seat is positioned on the valve seat, a first straight drainage pipeline is arranged on the check seat, and a one-way check valve plate is arranged at the upper end of the first straight drainage pipeline; a second straight-through drainage pipeline is arranged on the airbag seat corresponding to the first straight-through drainage pipeline; the position of the base corresponding to the second straight-through drainage pipeline is provided with a third straight-through drainage pipeline, the bottom of the third straight-through drainage pipeline is provided with a side opening, and the third straight-through drainage pipeline is communicated with the bottom of the transmission cavity through the side opening. The utility model can discharge the liquid in the transmission cavity in time, thereby avoiding influencing the normal use of the pump.
Description
Technical Field
The utility model relates to the technical field of vacuum pumps, in particular to a self-drainage vacuum pump.
Background
In the prior art, a vacuum pump (such as a rotary diaphragm vacuum pump) mainly comprises a motor, a base, an eccentric wheel, a driving shaft, a supporting frame, an air bag seat, a valve seat and a top cover. The motor is installed in the below of base, and the top equipment gasbag seat of base, the gasbag is installed on the gasbag seat. A transmission cavity is arranged between the lower part of the air bag and the air bag seat and the base. An eccentric wheel, a driving shaft and a supporting frame are arranged in the transmission cavity, and a motor is transmitted to the eccentric wheel. The bottom of the air bag is connected with the support frame, and the motor drives the air bag to perform reciprocating actions of air suction and air inflation through the eccentric wheel, the driving shaft and the support frame. The valve seat and the top cover are sequentially assembled above the air bag seat. The space between the valve seat and the top cover is divided into an air inlet cavity and an air outlet cavity. The air inlet channel of the air inlet cavity communicated with the air bag is provided with a one-way air inlet valve, and the air outlet channel of the air outlet cavity communicated with the air bag is provided with a one-way air outlet valve. When the air bag is inflated, the motor drives the air bag to exhaust air firstly, the air enters the air bag through the air inlet, the air inlet cavity and the one-way air inlet valve, then the motor drives the air bag to eject the air, and the air is exhausted through the air outlet through the one-way air outlet valve and the air outlet cavity, so that the inflation is realized. In the use, when the air inlet pipeline of the air inlet is abnormal, after the power is cut off every time, liquid (water) flows into the pump body and finally slowly permeates into the transmission cavity. The long time directly influences the normal use of the pump.
In view of the above, the present invention provides an improvement to the structure of the existing vacuum pump.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the structure of the existing vacuum pump, the utility model aims to provide a self-draining vacuum pump, so that liquid in a transmission cavity can be drained in time, and the influence on the normal use of the pump is avoided.
In order to achieve the above purpose, the solution of the utility model is:
a self-draining vacuum pump is characterized in that a motor is arranged below a base, an air bag seat is assembled above the base, an air bag is arranged on the air bag seat, and a transmission cavity is formed among the air bag, the air bag seat and the base; a driving assembly is arranged in the transmission cavity, and the motor drives the air bag to reciprocate through the driving assembly; a valve seat and a top cover are sequentially assembled above the air bag seat; the space between the valve seat and the top cover is divided into an air inlet cavity and an air outlet cavity, a one-way air inlet valve is arranged on an air inlet channel of the air inlet cavity communicated with the air bag, and a one-way air outlet valve is arranged on an air outlet channel of the air outlet cavity communicated with the air bag; the air inlet cavity is also internally provided with a check seat, the check seat is positioned on the valve seat, the check seat is provided with a first straight drainage pipeline which vertically penetrates through the valve seat, and the upper end of the first straight drainage pipeline is provided with a one-way check valve plate; a second straight-through drainage pipeline which vertically penetrates through the airbag seat is arranged on the airbag seat at a position corresponding to the first straight-through drainage pipeline; a third straight-through drainage pipeline is arranged on the side wall of the base at a position corresponding to the second straight-through drainage pipeline, a side opening is formed in the bottom of the third straight-through drainage pipeline, and the third straight-through drainage pipeline is communicated with the bottom of the transmission cavity through the side opening; the first through drainage pipeline, the second through drainage pipeline and the third through drainage pipeline are butted together to form a drainage channel for connecting the air inlet cavity and the transmission cavity.
The first straight-through drainage pipeline is a thin pipe.
The one-way check valve plate is a long plate, lower positioning convex particles are formed at two ends of the lower surface of the long plate, a plug is formed in the middle of the lower surface of the long plate, a positioning groove is formed in the check seat, the lower positioning convex particles are embedded into the positioning groove, the long plate is installed in the check seat, and the middle plug of the long plate is normally plugged at the upper end of the first straight drainage pipeline.
The non-return seat forms a circular table surface around the upper end of the first straight drainage pipeline, and the middle plug of the long piece is normally pressed on the circular table surface.
The two ends of the upper surface of the long sheet form upper positioning convex grains which are propped against the lower surface of the top cover.
The upper surface and the lower surface of the one-way check valve plate are designed symmetrically.
The lower surface of the top cover corresponds to the long sheet to form a pressing block, and the pressing block is pressed on the upper surface of the long sheet.
The lower surface of the valve seat forms a sinking groove corresponding to the position of the first straight-through drainage pipeline, the upper end of the second straight-through drainage pipeline is inserted into the sinking groove, the lower end of the second straight-through drainage pipeline is upwards contracted to form a step, and the upper end of the third straight-through drainage pipeline upwards abuts against the step.
Third straight-through drain line on the base has the thick pipe of upper segment and the tubule of hypomere, and the opening of thick pipe connects to the straight-through drain line of second, and the bottom of tubule is equipped with the side opening.
After the scheme is adopted, the drainage channel connected with the transmission cavity is formed by the first through drainage pipeline, the second through drainage pipeline and the third through drainage pipeline. When the power supply of the vacuum pump is powered off, the one-way check valve plate automatically closes the first through drainage pipeline under the action of the air pressure of the air inlet cavity, and liquid is prevented from flowing into a transmission cavity formed among the air bag, the air bag seat and the base through the drainage channel. When the power supply of the vacuum pump is electrified, the vacuum pump starts to work, after the vacuum degree in the air inlet cavity reaches a certain negative pressure value, the one-way check valve plate automatically opens the first through drainage pipeline, residual liquid in the transmission cavity can be pumped out through the drainage channel, enters the air inlet cavity, passes through the air bag and the air outlet cavity, and is discharged out of the pump body through the air outlet nozzle of the vacuum pump. The utility model not only has the basic air extraction function and achieves certain vacuum degree capability, but also has the function of discharging residual water in the vacuum pump body after liquid flows into the air inlet pipeline abnormally.
Drawings
FIG. 1 is an exploded top view of the present invention;
FIG. 2 is an exploded bottom view of the present invention;
FIG. 3 is a cross-sectional view of the inflatable structure of the present invention;
FIG. 4 is a first cross-sectional view of the drainage structure of the present invention;
FIG. 5 is a second cross-sectional view of the drainage structure of the present invention;
FIG. 6 is a top view of the valve seat;
FIG. 7 is a bottom view of the valve seat;
FIG. 8 is a top view of an airbag seat;
fig. 9 is a bottom view of the airbag seat;
fig. 10 is a cross-sectional view of an airbag seat;
FIG. 11 is a top view of the base;
FIG. 12 is a cross-sectional view of the base;
FIG. 13 is a top view of a one-way check valve plate;
FIG. 14 is a bottom view of the check valve plate.
Description of the reference symbols
The device comprises a base 1, a third straight-through drainage pipeline 11, a thin pipe 12, a thick pipe 13 and a side opening 14; the motor 2, the eccentric wheel 21, the driving shaft 22 and the supporting frame 23; an air bag 3; the airbag seat 4, the second through drain line 41, the step 42; the check valve comprises a valve seat 5, a check seat 51, a positioning groove 511, a first straight drainage pipeline 52, a round table surface 521, a one-way check valve plate 53, a lower positioning convex particle 531, a plug 532, an upper positioning convex particle 533 and a sink 54; the top cover 6, the air inlet nozzle 61, the air outlet nozzle 62 and the pressing block 63; a one-way intake valve 71, a one-way exhaust valve 72; an air inlet cavity A, an air outlet cavity B and a transmission cavity C.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
Referring to fig. 1 to 14, in the self-draining vacuum pump disclosed by the present invention, a motor 2 is installed below a base 1, an air bag seat 4 is assembled above the base 1, an air bag 3 is installed on the air bag seat 4, a transmission cavity C is formed between the lower portions of the air bag 3 and the air bag seat 4 and the base 1, and a driving assembly is installed in the transmission cavity C, and the driving assembly may specifically include an eccentric wheel 21, a driving shaft 22 and a supporting frame 23. The motor 2 drives the air bag 3 to reciprocate through the driving component to realize the inflation function. A valve seat 5 and a top cover 6 are assembled in order above the airbag seat 4. Through weld line and butt fusion groove cooperation between disk seat 5 and the top cap 6, adopt the butt fusion mode sealed together fixed, the space between disk seat 5 and the top cap 6 is cut apart into admit air chamber A and go out air chamber B through weld line and butt fusion groove cooperation, has admit air mouth 61 and go out air mouth 62 on the top cap 6. The air inlet channel of the air inlet cavity A communicated with the air bag 3 is provided with a one-way air inlet valve 71, the air outlet channel of the air outlet cavity B communicated with the air bag 3 is provided with a one-way air outlet valve 72, the one-way air inlet valve 71 and the one-way air outlet valve 72 are umbrella-shaped valves, and the specific forms of the one-way air inlet valve 71 and the one-way air outlet valve 72 are not limited by the illustration.
The utility model is provided with a check seat 51 in an air inlet cavity A, the check seat 51 is positioned on a valve seat 5, the check seat 51 is provided with a first through drainage pipeline 52, the first through drainage pipeline 52 vertically penetrates through the valve seat 5, and the upper end of the first through drainage pipeline 52 is provided with a one-way check valve plate 53. A second straight-through drainage pipeline 41 is arranged on the air bag seat 4 corresponding to the first straight-through drainage pipeline 52, and the second straight-through drainage pipeline 41 vertically penetrates through the air bag seat 4, so that the upper end of the second straight-through drainage pipeline 41 is in butt joint with the lower end of the first straight-through drainage pipeline 52. A third straight-through drain pipeline 11 is arranged on the side wall of the base 1 corresponding to the position of the second straight-through drain pipeline 41, the upper end of the third straight-through drain pipeline 11 is in butt joint with the lower end of the second straight-through drain pipeline 41, a side opening 14 is arranged at the bottom of the third straight-through drain pipeline 11, and the third straight-through drain pipeline 11 is communicated with the bottom of the transmission cavity C through the side opening 14.
The utility model utilizes the first straight-through drainage pipeline 52, the second straight-through drainage pipeline 41 and the third straight-through drainage pipeline 11 to be butted together to form a drainage channel for connecting the air inlet cavity A and the transmission cavity C, and the opening or closing of the one-way check valve plate 53 controls whether the drainage channel is communicated with the air inlet cavity A or not. When the power supply of the vacuum pump is powered off, the pressure of the air inlet cavity A rises, and under the pressure difference formed by the negative pressure in the transmission cavity C and the rising pressure in the air inlet cavity A, the one-way check valve plate 53 automatically closes the first through drainage pipeline 52 to prevent liquid from flowing into the drainage channel, so that the risk of liquid flowing into the transmission cavity C is prevented. When the power supply of the vacuum pump is electrified, the vacuum pump starts to work, after the vacuum degree in the air inlet cavity A reaches a certain value of negative pressure, the one-way check valve plate 53 can automatically open the first straight-through drainage pipeline 52, so that residual liquid in the transmission cavity C can be upwards pumped out through the drainage channel, enters the air inlet cavity A through the one-way check valve plate 53, is sent to the air outlet cavity B through the air bag 3, and is discharged out of the pump body through the air outlet nozzle of the vacuum pump. In practical detection, when the negative pressure in the air inlet end and the air inlet cavity A reaches below-20 kPa, the residual water in the transmission cavity C can be pumped out of the pump body through the drainage channel under the negative pressure.
In order to improve the drainage effect, the first straight drainage pipeline 52 is further designed to be a thin pipe, and the third straight drainage pipeline 11 is connected with the bottom of the transmission cavity C through the thin pipe 12, so that accumulated water is easier to suck from the transmission cavity C to the air inlet cavity A under the action of pressure difference.
The one-way check valve plate 53 of the present invention may be designed as a long plate as shown in the figure, but is not limited to the structure shown in the figure, the two ends of the lower surface of the long plate form the lower positioning protrusions 531, the middle of the lower surface of the long plate forms the plug 532, the check seat 51 forms the positioning groove 511, the long plate is installed in the check seat 51 by embedding the lower positioning protrusions 531 into the positioning groove 511, and the middle plug 532 of the long plate is normally plugged at the upper end of the first straight drainage pipeline 52. Further, the check seat 51 of the present invention forms a circular table 521 around the upper end of the first straight drainage pipe 52, and the long middle plug 532 is normally pressed against the circular table 521. The two ends of the upper surface of the long sheet form upper positioning convex particles 533, and the upper positioning convex particles 533 are propped against the lower surface of the top cover 6, so that the long sheet and the top cover 6 keep enough movable clearance, and the one-way check valve sheet 53 can be opened or closed more freely. To simplify the design, the upper and lower surfaces of check valve plate 53 may be of a symmetrical design. Furthermore, the lower surface of the top cover 6 of the utility model is formed with a press block 63 corresponding to the long sheet, and the press block 63 is pressed against the upper surface of the long sheet, so that the one-way check valve sheet 53 can be better fixed, and the opening or closing is more stable and accurate.
For the convenience of assembly and more accurate assembly of the drainage channel, the lower surface of the valve seat 5 of the present invention forms a sunken groove 54 corresponding to the position of the first through drainage pipeline 52, the upper end of the second through drainage pipeline 41 is inserted into the sunken groove 54, the lower end of the second through drainage pipeline 41 is contracted upwards to form a step 42, and the upper end of the third through drainage pipeline 11 is pressed upwards against the step 42. The sunken groove 54 and the step 42 not only have the effect of assembly positioning, but also have the fool-proof effect.
As an optimized structure, the third straight-through drainage pipeline 11 on the base 1 is provided with an upper-section thick pipe 13 and a lower-section thin pipe 12, the opening of the thick pipe 13 is connected to the second straight-through drainage pipeline 41, and the bottom of the thin pipe 12 is provided with a side opening 14 communicated with the bottom of the transmission cavity C.
The vacuum pump not only has a basic air pumping function and a certain vacuum degree capacity, but also has a function of discharging residual water in the vacuum pump body after liquid flows into the air inlet pipeline abnormally.
The above description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that after reading this description, those skilled in the art can make equivalent changes according to the design concept of the present application, which fall within the protection scope of the present application.
Claims (9)
1. A self-draining vacuum pump, characterized in that: the motor is arranged below the base, the air bag seat is assembled above the base, the air bag is arranged on the air bag seat, and a transmission cavity is formed among the air bag, the air bag seat and the base; a driving assembly is arranged in the transmission cavity, and the motor drives the air bag to reciprocate through the driving assembly; a valve seat and a top cover are sequentially assembled above the air bag seat; the space between the valve seat and the top cover is divided into an air inlet cavity and an air outlet cavity, a one-way air inlet valve is arranged on an air inlet channel of the air inlet cavity communicated with the air bag, and a one-way air outlet valve is arranged on an air outlet channel of the air outlet cavity communicated with the air bag; the air inlet cavity is also internally provided with a check seat, the check seat is positioned on the valve seat, the check seat is provided with a first straight drainage pipeline which vertically penetrates through the valve seat, and the upper end of the first straight drainage pipeline is provided with a one-way check valve plate; a second straight-through drainage pipeline which vertically penetrates through the airbag seat is arranged on the airbag seat at a position corresponding to the first straight-through drainage pipeline; a third straight-through drainage pipeline is arranged on the side wall of the base at a position corresponding to the second straight-through drainage pipeline, a side opening is formed in the bottom of the third straight-through drainage pipeline, and the third straight-through drainage pipeline is communicated with the bottom of the transmission cavity through the side opening; the first through drainage pipeline, the second through drainage pipeline and the third through drainage pipeline are butted together to form a drainage channel for connecting the air inlet cavity and the transmission cavity.
2. A self-draining vacuum pump as claimed in claim 1, wherein: the first straight-through drainage pipeline is a thin pipe.
3. A self-draining vacuum pump as claimed in claim 1, wherein: the one-way check valve plate is a long plate, lower positioning convex particles are formed at two ends of the lower surface of the long plate, a plug is formed in the middle of the lower surface of the long plate, a positioning groove is formed in the check seat, the lower positioning convex particles are embedded into the positioning groove, the long plate is installed in the check seat, and the middle plug of the long plate is normally plugged at the upper end of the first straight drainage pipeline.
4. A self-draining vacuum pump as claimed in claim 3, wherein: the non-return seat forms a circular table surface around the upper end of the first straight drainage pipeline, and the middle plug of the long piece is normally pressed on the circular table surface.
5. A self-draining vacuum pump as claimed in claim 3, wherein: the two ends of the upper surface of the long sheet form upper positioning convex grains which are propped against the lower surface of the top cover.
6. A self-draining vacuum pump as claimed in claim 5, wherein: the upper surface and the lower surface of the one-way check valve plate are designed symmetrically.
7. A self-draining vacuum pump as claimed in claim 3, wherein: the lower surface of the top cover corresponds to the long sheet to form a pressing block, and the pressing block is pressed on the upper surface of the long sheet.
8. A self-draining vacuum pump as claimed in claim 1, wherein: the lower surface of the valve seat forms a sinking groove corresponding to the position of the first straight-through drainage pipeline, the upper end of the second straight-through drainage pipeline is inserted into the sinking groove, the lower end of the second straight-through drainage pipeline is upwards contracted to form a step, and the upper end of the third straight-through drainage pipeline upwards abuts against the step.
9. A self-draining vacuum pump as claimed in claim 1, wherein: third straight-through drain line on the base has the thick pipe of upper segment and the tubule of hypomere, and the opening of thick pipe connects to the straight-through drain line of second, and the bottom of tubule is equipped with the side opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904325.0U CN216407082U (en) | 2021-11-24 | 2021-11-24 | Self-draining vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904325.0U CN216407082U (en) | 2021-11-24 | 2021-11-24 | Self-draining vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216407082U true CN216407082U (en) | 2022-04-29 |
Family
ID=81302070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122904325.0U Active CN216407082U (en) | 2021-11-24 | 2021-11-24 | Self-draining vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216407082U (en) |
-
2021
- 2021-11-24 CN CN202122904325.0U patent/CN216407082U/en active Active
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