CN216866955U

CN216866955U - Suck-back prevention device for vacuum pump

Info

Publication number: CN216866955U
Application number: CN202220386964.4U
Authority: CN
Inventors: 陈海强; 边莉莉; 翟金宁; 宋纯亮; 于国伟
Original assignee: Shandong Gp Natural Products Co ltd
Current assignee: Shandong Gp Natural Products Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-07-01
Anticipated expiration: 2032-02-24

Abstract

The utility model provides a vacuum pump anti-suck-back device which comprises a supporting seat, wheels, first supporting frames, a motor, supporting plates, an air pump and the like, wherein the wheels are rotatably connected at four corners of the bottom of the supporting seat, the two first supporting frames are connected to the right side of the top of the supporting seat, the two first supporting frames are arranged in a bilateral symmetry mode, the motor is installed between the inner sides of the two first supporting frames, the two supporting plates are connected to the left side of the top of the supporting seat, the two supporting plates are arranged in a bilateral symmetry mode, and the air pump is installed between the two supporting plates. The utility model can block the input pipe and the output pipe through the push rod and the ball valve, thereby avoiding the suck-back phenomenon when the air pump stops running, not bringing inconvenience to the vacuum work of people and simultaneously avoiding the pollution of the inner cavity of the air pump.

Description

Suck-back prevention device for vacuum pump

Technical Field

The utility model relates to a suck-back prevention device, in particular to a suck-back prevention device for a vacuum pump.

Background

The vacuum pump is a device capable of reducing the pressure in the container to form a vacuum state, and people can prevent the vacuum pump from being reversely sucked in order to avoid the phenomenon of reverse suction in the vacuum pump when the vacuum pump is closed.

The vacuum pump that discloses a vacuum pump at present prevents suck-back device for CN206522230U, vacuum pump include the blast pipe, prevent suck-back device and include: one end of the joint is communicated with an exhaust pipe of the vacuum pump, and the other end of the joint is provided with a first vent hole; and a sealing means for sealing the first vent hole when the vacuum pump stops operating, the sealing means being mounted on the joint. According to the suck-back prevention device provided by the embodiment of the utility model, the sealing device is closed when the vacuum pump stops working, and the first vent hole is sealed, so that impurities can be effectively prevented from being sucked back into the vacuum pump. Embodiments of another aspect of the present invention are directed to a vacuum pump. Although the above patent can prevent effectively that impurity suck-back from getting into in the vacuum pump, dust and impurity in the above patent can not blockking the outside air to lead to dust and impurity to get into the aspiration pump inside, and then influence vacuum work and cause the aspiration pump inner chamber to be polluted.

In view of the above problems, a vacuum pump anti-suck-back device with a dustproof function and without affecting vacuum operation needs to be designed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-suck-back device of a vacuum pump, which has the advantages of dust prevention and no influence on vacuum work, and overcomes the defects that dust and impurities in the outside air cannot be blocked and the vacuum work cannot be influenced.

The purpose of the utility model is realized as follows: the utility model provides a vacuum pump prevents suck-back device, including a supporting seat, the wheel, first support frame, including a motor, an end cap, a controller, and a cover plate, the aspiration pump, the air inlet, gas vent and shield, four angular equal rotary types ground in supporting seat bottom are connected with the wheel, supporting seat top right side is connected with two first support frames, two first support frames are the bilateral symmetry setting, and install the motor between two first support frame inboards, supporting seat top left side is connected with two backup pads, two backup pads are the bilateral symmetry setting, install the aspiration pump between two backup pads, the inside spare part of aspiration pump links to each other with the output shaft of motor, the aspiration pump left side is connected with the air inlet, aspiration pump top right side is connected with the gas vent, gas vent top left side rotary type ground is connected with the shield.

In addition, particularly preferably, the device comprises an output pipe, a first fixing ring, a return spring, a push rod, an input pipe, support rods, an elastic spring, a fixing block, a second fixing ring, a compression spring and a ball valve, wherein the left side of an air inlet is connected with the output pipe, the outer part of the output pipe is uniformly provided with three clamping grooves along the circumferential direction, the inner part of the output pipe is connected with the first fixing ring, the middle of the first fixing ring is connected with the push rod in a sliding manner, the return spring is connected between the push rod and the first fixing ring and sleeved outside the push rod, the left side of the output pipe is connected with the input pipe in a clamping manner, the right side of the input pipe is uniformly connected with the three support rods along the circumferential direction, the three support rods are connected with the fixing blocks in a sliding manner, the fixing blocks are matched with the output pipe in a clamping manner, the elastic springs are connected between the fixing blocks at the same side and the support rods at the same side, and the elastic springs at the same side are sleeved outside the fixing blocks at the same side, the middle part is connected with the solid fixed ring of second in the input tube, and the middle part left side is connected with the ball valve slidingtype in the solid fixed ring of second, is connected with compression spring between ball valve and the solid fixed ring of second, and compression spring overlaps in the outside of ball valve.

In addition, especially preferred still include second support frame and electric fan, the left and right sides front and back symmetry on supporting seat top connects with the second support frame, and all installs five electric fans between the horizontal position's of homonymy two second support frames.

In addition, it is particularly preferred that the right side of the top of the support seat is provided with a push handle.

Furthermore, it is particularly preferred that the wheels are universal wheels.

In addition, it is particularly preferable that the outer side of the right part of the fixing block is provided with an anti-slip line.

Furthermore, it is particularly preferred that the right side of the inlet pipe is provided with a sealing gasket.

The utility model has the beneficial effects and remarkable progress that: the suction pump can block the input pipe and the output pipe through the push rod and the ball valve, so that the phenomenon of back suction when the suction pump stops running is avoided, inconvenience is not brought to vacuum work of people, and meanwhile, the inner cavity of the suction pump is prevented from being polluted; the dust cover is arranged, so that dust and impurities in the outside air are blocked by the dust cover, and the dust and the impurities are prevented from entering the air suction pump; through being equipped with second support frame and electric fan, the wind-force that the electric fan produced can cool down the produced heat of motor and aspiration pump, avoids the high and shut down of motor and aspiration pump's temperature.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a partial sectional structural view of a first embodiment of the present invention.

Fig. 4 is a second partial sectional structural view of the present invention.

Wherein the figures include the following reference numerals: 1. the electric fan comprises a supporting seat, 2, wheels, 3, a first supporting frame, 4, a motor, 5, a supporting plate, 6, an air pump, 7, an air inlet, 8, an air outlet, 9, a dust cover, 10, an output pipe, 11, a first fixing ring, 12, a return spring, 13, a push rod, 14, an input pipe, 15, a supporting rod, 16, an elastic spring, 17, a fixing block, 18, a second fixing ring, 19, a compression spring, 20, a ball valve, 21, a second supporting frame, 22 and an electric fan.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.

Example 1

A vacuum pump suck-back prevention device refers to fig. 1 and fig. 2, and comprises a supporting seat 1, wheels 2, a first supporting frame 3, a motor 4, a supporting plate 5, an air suction pump 6, an air inlet 7, an air outlet 8 and a dust cover 9.

The right side of the top of the supporting seat 1 is provided with a pushing handle, a pushing device is convenient to use, four corners at the bottom of the supporting seat 1 are connected with wheels 2 used for driving the device to move in a rotating mode, and the wheels 2 are universal wheels, so that the device is more flexible when moving. Two first support frames 3 are connected with the right side of the top of the supporting seat 1, the two first support frames 3 are arranged in a bilateral symmetry mode, and a motor 4 is installed between the inner sides of the two first support frames 3.

The left side of the top of the supporting seat 1 is connected with two supporting plates 5, the two supporting plates 5 are arranged in a bilateral symmetry mode, an air extracting pump 6 used for extracting air is installed between the two supporting plates 5, parts inside the air extracting pump 6 are connected with an output shaft of the motor 4, the left side of the air extracting pump 6 is connected with an air inlet 7, the right side of the top of the air extracting pump 6 is connected with an air outlet 8, and the left side of the top of the air outlet 8 is rotatably connected with a dust cover 9.

Referring to fig. 1, 3 and 4, the ball valve comprises an output pipe 10, a first fixing ring 11, a return spring 12, a push rod 13, an input pipe 14, a support rod 15, an elastic spring 16, a fixing block 17, a second fixing ring 18, a compression spring 19 and a ball valve 20.

7 left sides of air inlet are connected with output tube 10 that is used for transmitting the air, output tube 10 outside is opened evenly along circumference has three draw-in groove, output tube 10 internal weld has first solid fixed ring 11, be connected with push rod 13 in the middle of the first solid fixed ring 11 slidingly, the welding has return spring 12 between push rod 13 and the first solid fixed ring 11, and return spring 12 covers in the push rod 13 outside, output tube 10 left side joint has input tube 14, input tube 14 right side is equipped with sealed the pad, make the difficult stream of air leak.

The input tube 14 right side is connected with three bracing piece 15 along circumference uniformly, all be connected with fixed block 17 on the three bracing piece 15 slidingly, the fixed block 17 right part outside is equipped with anti-skidding line, make the hand be difficult for skidding, and fixed block 17 and output tube 10 joint cooperation, all be connected with elastic spring 16 between the fixed block 17 of homonymy and the bracing piece 15 of homonymy, and the elastic spring 16 cover of homonymy is in the fixed block 17 outside of homonymy, the middle part is connected with the solid fixed ring 18 of second in the input tube 14, the solid fixed ring 18 of second in the middle part left side slidingly be connected with ball valve 20, be connected with compression spring 19 between ball valve 20 and the solid fixed ring 18 of second, and compression spring 19 cover is in the outside of ball valve 20.

When the vacuum pump anti-suck-back device is needed, the pushing handle is pushed to drive the supporting seat 1 to move, the supporting seat 1 drives the wheel 2 to rotate, the wheel 2 is in contact with the ground and rotates, then the wheel 2 can drive the device to move, people push the device to a place where the device needs to be used, and the pushing handle is stopped being pushed after the device reaches a destination;

then people pull the fixed block 17 to the right side, the elastic spring 16 is compressed, the input pipe 14 is aligned with the output pipe 10, after the alignment is good, the input pipe 14 is rotated, the input pipe 14 drives the support rod 15 and the fixed block 17 to rotate, when the fixed block 17 rotates to a position corresponding to a clamping groove on the outer portion of the output pipe 10, the fixed block 17 can be loosened, under the reset action of the elastic spring 16, the fixed block 17 moves to the left side to reset, the fixed block 17 is clamped into the clamping groove on the output pipe 10, the fixed block 17 clamps the input pipe 14 in such a way, and then people can sleeve the vacuum object on the outer side of the left portion of the input pipe 14;

after the sleeve is completed, the motor 4 is started, the motor 4 drives the air pump 6 to operate, the air pump 6 generates suction force, the push rod 13 is sucked to the right side by the suction force, the return spring 12 is compressed, the push rod 13 is not blocked to the through hole of the output pipe 10, the ball valve 20 is also sucked to the right side by the suction force, the compression spring 19 is compressed, the ball valve 20 is not blocked to the input pipe 14, air in the object needing vacuum is pumped away, the pumped air is discharged through the exhaust port 8, the dust cover 9 is flushed by the air, the dust cover 9 is turned upwards, the motor 4 can be closed after the air in the object needing vacuum is pumped out, the motor 4 stops driving the air pump 6 to operate, the air pump 6 does not generate suction force, the air is not discharged from the exhaust port 8, the dust cover 9 is turned downwards and closed, in case no suction is generated, the push rod 13 will not be sucked to the right;

under the effect that return spring 12 resets, push rod 13 moves to the left side and resets, push rod 13 will close the through hole of output tube 10 self, ball valve 20 will not be inhaled by suction afterwards, under the effect that compression spring 19 resets, ball valve 20 moves to the left side and resets, ball valve 20 will block input tube 14, input tube 14 will not bleed to the article that need vacuum, so block input tube 14 and output tube 10, alright avoid aspiration phenomenon to appear when aspiration pump 6 stops the operation, can not bring inconvenience for people's vacuum work, avoid aspiration pump 6 inner chamber to be polluted simultaneously, when exhaust port 8 discharges the air of taking away, shield 9 will block dust and impurity in the outside air, avoid dust and impurity to get into inside aspiration pump 6, according to the above-mentioned operation, alright realize preventing the use of vacuum pump suck-back device.

Example 2

On the basis of embodiment 1, referring to fig. 1 and 4, the electric fan support further comprises second support frames 21 and electric fans 22, wherein the second support frames 21 are symmetrically welded to the left side and the right side of the top of the support base 1 in a front-back manner, and five electric fans 22 for heat dissipation are mounted between the two second support frames 21 at the same side and in the transverse position.

Under the long-time operation of motor 4 and air pump 6, motor 4 and air pump 6 will generate heat, in order to avoid the heat that motor 4 and air pump 6 produced too high, so need to dispel the heat to motor 4 and air pump 6, when needing to dispel the heat to motor 4 and air pump 6, start electric fan 22, electric fan 22 begins to produce wind-force, the wind-force that produces thereupon will blow on motor 4 and air pump 6, so wind-force alright cool down the heat of motor 4 and air pump 6, when need not dispel the heat to motor 4 and air pump 6, it can to close electric fan 22.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the utility model is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A vacuum pump suck-back prevention device is characterized by comprising a support seat (1), wheels (2), first support frames (3), motors (4), support plates (5), an air suction pump (6), an air inlet (7), an air outlet (8) and a dust cover (9), wherein the wheels (2) are rotatably connected at four corners at the bottom of the support seat (1), the two first support frames (3) are connected at the right side of the top of the support seat (1), the two first support frames (3) are arranged in a bilateral symmetry manner, the motors (4) are arranged between the inner sides of the two first support frames (3), the two support plates (5) are connected at the left side of the top of the support seat (1), the two support plates (5) are arranged in a bilateral symmetry manner, the air suction pump (6) is arranged between the two support plates (5), and parts in the air suction pump (6) are connected with an output shaft of the motors (4), the left side of the air pump (6) is connected with an air inlet (7), the right side of the top of the air pump (6) is connected with an air outlet (8), and the left side of the top of the air outlet (8) is rotatably connected with a dust cover (9).

2. The vacuum pump suck-back prevention device as defined in claim 1, which comprises an output tube (10), a first fixing ring (11), a return spring (12), a push rod (13), an input tube (14), a support rod (15), an elastic spring (16), a fixing block (17), a second fixing ring (18), a compression spring (19) and a ball valve (20), wherein the output tube (10) is connected to the left side of the air inlet (7), three clamping grooves are uniformly formed in the outer portion of the output tube (10) along the circumferential direction, the first fixing ring (11) is connected to the inner portion of the output tube (10), the push rod (13) is slidably connected to the middle of the first fixing ring (11), the return spring (12) is connected between the push rod (13) and the first fixing ring (11), the return spring (12) is sleeved on the outer side of the push rod (13), the input tube (14) is clamped to the left side of the output tube (10), the right side of the input pipe (14) is uniformly connected with three support rods (15) along the circumferential direction, the three support rods (15) are all connected with fixing blocks (17) in a sliding manner, and the fixing blocks (17) are in clamping fit with the output pipe (10); all be connected with elastic spring (16) between fixed block (17) of homonymy and bracing piece (15) of homonymy, and elastic spring (16) cover in fixed block (17) the outside of homonymy, the middle part is connected with solid fixed ring (18) of second in input tube (14), middle part left side is connected with ball valve (20) in solid fixed ring (18) of second slidingtype, be connected with compression spring (19) between ball valve (20) and the solid fixed ring (18) of second, and compression spring (19) cover is in the outside of ball valve (20).

3. The vacuum pump suck-back prevention device as defined in claim 2, further comprising a second support frame (21) and electric fans (22), wherein the second support frames (21) are symmetrically connected to the left and right sides of the top of the support base (1) in front and back directions, and five electric fans (22) are installed between the two second support frames (21) in the lateral position on the same side.

4. The vacuum pump suck-back prevention device as defined in claim 1, wherein a push handle is provided on the right side of the top of the support base (1).

5. The vacuum pump suck back prevention device as defined in claim 1, wherein the wheels (2) are universal wheels.

6. The vacuum pump suck-back prevention device as defined in claim 2, wherein the outer side of the right portion of the fixing block (17) is provided with anti-slip lines.

7. The vacuum pump suck back prevention device as defined in claim 1, wherein a gasket is provided on the right side of the input pipe (14).