WO2021051770A1 - Vacuum pump structure - Google Patents

Abstract

Disclosed is a vacuum pump structure, which comprises a pump body (2) extending into a bottle body (1), wherein a pump chamber (3) is arranged on the pump body (2); the pump body (2) is connected to a bottle-locking cap (4); a suction assembly (5) is arranged in the pump chamber (3); a one-way valve (6) is arranged at the lower end of the pump chamber (3); the upper end of the suction assembly (5) is connected to a button (7); a locking cap (8) is arranged on an inner wall of the upper part of the pump chamber (3); the suction assembly (5) comprises an upper pump rod (51); a spring (52) is arranged between the upper pump rod (51) and the locking cap (8); the lower end of the upper pump rod (51) is connected to a lower pump rod (53) in the pump chamber (3); a liquid inlet channel (531) is formed in the lower pump rod (53); a liquid inlet hole (532) is formed in the lower pump rod (53); a pump body piston (54) is sleeved on the outer side of the lower pump rod (53); an air inlet hole (11) is formed in the bottom of the bottle body (1); a bottle body piston (12) is further arranged at the bottom of the bottle body (1); a dustproof cap (9) is sleeved on the outer portion of the bottle-locking cap (4); and an anti-disengagement structure is arranged between the bottle-locking cap (4) and the dustproof cap (9). In the vacuum pump structure, the dustproof cap (9) is sleeved outside the bottle-locking cap (4), and the anti-disengagement structure, which is capable of preventing the dustproof cap (9) from falling off, is arranged between the bottle-locking cap (4) and the dustproof cap (9), so that dust is prevented from entering the bottle body (1) from the button (7) and causing contamination, and the structure is stable.

Description

A structure of vacuum pump 【Technical Field】

The utility model relates to a vacuum pump structure.

【Background technique】

Because of its exquisite design and convenient use, vacuum pumps have been widely used in daily chemical and pharmaceutical industries. However, the existing vacuum pump has many parts, complex structure, inconvenient assembly, high manufacturing difficulty, and high production cost. After the traditional vacuum pump is unpacked, the nozzle of the vacuum pump is exposed to the outside for a long time, and pollutants such as dust are exposed during use. It is easy to enter the nozzle and cause pollution; and the spring of the suction component is usually set in the pump chamber, and it will inevitably come into direct contact with the emulsion. When the spring is rusted, it will pollute the liquid, which is unsanitary.

The utility model is produced based on the above shortcomings.

[Utility model content]

The technical problem to be solved by the utility model is to provide a vacuum pump structure with a simple structure.

In order to solve the above technical problems, the present utility model adopts the following technical solution: a vacuum pump structure, which is characterized in that it includes a pump body 2 extending into the bottle body 1, and the pump body 2 is provided with a pump chamber 3, The pump body 2 is connected with a lock bottle cap 4 that can be fixed to the bottle body, and the pump chamber 3 is provided with a suction assembly 5 that can move up and down to draw the liquid in the bottle upwards. , The lower end of the pump chamber 2 is provided with a one-way valve 6 that only discharges the liquid in the bottle 1 upward when the suction assembly 5 moves, and the upper end of the suction assembly 5 is connected to the upper end of the suction assembly 5 to drive the suction assembly 5 to work. Button 7, the upper inner wall of the pump chamber 3 is provided with a locking cover 8, the suction assembly 5 includes an upper pump rod 51 that can pass through the locking cover 8 and has a suction channel 511, the upper A spring 52 is arranged between the pump rod 51 and the locking cover 8. The lower end of the upper pump rod 51 is located in the pump chamber 3 and is connected with a lower pump rod 53. The lower pump rod 53 is opened with the suction The liquid inlet channel 531 communicated with the channel 511, the lower pump rod 53 is provided with a liquid inlet hole 532 communicating with the liquid inlet channel 531, and the outer side of the lower pump rod 53 is sleeved so as to be opposite to the upper pump. The rod 51 and the lower pump rod 53 move and can block the liquid from the liquid inlet 532 into the pump piston 54 in the liquid inlet channel 531. The bottom of the bottle body 1 is provided with an air inlet hole 11, and the bottle body 1 The bottom of the bottle body 1 is also provided with a bottle body piston 12 that can rise as the air pressure in the bottle body 1 decreases. The outside of the lock bottle cap 4 is sleeved with a dust cap 9, and the lock bottle cap 4 and the dust cap An anti-drop structure is provided between 9 to prevent the dust cover 9 from falling.

The vacuum pump structure described above is characterized in that the anti-dropping structure includes at least two convex points 41 arranged on the outer side wall of the lock bottle cap 4 in the circumferential direction, and the inner side of the dust cap 9 The wall is provided with a convex ring 91 that fits and clamps with the convex point 41.

The structure of a vacuum pump as described above is characterized in that the upper pump rod 51 is provided with a pushing part 512 that can touch the upper end of the pump body piston 54 to push the piston 54 downward, and the lower pump rod 53 is provided with a protrusion 533 which can touch the lower end of the piston 54 and push the pump body piston 54 upward.

The structure of a vacuum pump as described above is characterized in that the outer side of the locking cover 8 is provided with a supporting portion 81 for the lower end of the spring 52 to abut, and the outer side wall of the upper pump rod 51 is provided with a squeezable The pressing portion 513 of the spring 52.

The structure of a vacuum pump as described above is characterized in that the lock bottle cap 4 includes a first pressing part 401 capable of fixing the pump body 2, a first connecting part 402 fixedly connected to the bottle body 1, and The second connecting portion 403 connected to the dust cover 9.

The structure of a vacuum pump as described above is characterized in that the first connecting portion 402 is clamped to the bottle body 1.

The structure of a vacuum pump as described above is characterized in that the first connecting portion 402 is threadedly connected to the bottle body 1.

The structure of a vacuum pump as described above is characterized in that the first supporting portion 401, the first connecting portion 402 and the second connecting portion 403 are formed as an integral structure.

The vacuum pump structure described above is characterized in that the upper end of the lower pump rod 53 extends into the suction channel 511, and the outer side of the upper end of the lower pump rod 53 is provided with a ring of convex edges 533, the The suction channel 511 is provided with a step 512 that can abut the convex edge 533 and prevent the lower pump rod 53 from falling out of the suction channel 511.

The structure of a vacuum pump as described above is characterized in that the one-way valve 6 includes a circular buckle 61 that is buckled with the inner diameter of the bottom of the pump body 2, and the center of the circular buckle 61 is provided with a seal capable of sealing The elastic plug 62 of the liquid inlet of the pump body, the elastic plug 62 is connected with the circular buckle 61 through the elastic sheet 63 as a whole.

Compared with the prior art, the vacuum pump structure of the present invention achieves the following effects:

1. The outer cover of the bottle-locking cap of the present invention is covered with a dust-proof cover, and an anti-fall structure is arranged between the bottle-locking cover and the dust-proof cover to prevent the dust-proof cover from falling, so as to prevent dust from entering the bottle body from the button. Causes pollution, and the dust cover will not fall due to bumps during transportation, and the structure is stable.

2. The outer side of the locking cover of the present invention is provided with a bearing portion for the lower end of the spring to abut, and the outer side wall of the upper pump rod is provided with an squeezing portion that can squeeze the spring, and the springs are all located outside the suction assembly. Avoid contact with the emulsion in the pump body, clean and hygienic.

3. The bottle-locking cap of the present invention includes a first pressing part capable of fixing the pump body, a first connecting part fixedly connected with the bottle body, and a second connecting part connected with the dust cap, all of which are integrally formed In addition, the first connecting part and the bottle body can be connected by snap connection or screw connection, which makes the assembly more convenient.

【Explanation of the drawings】

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, in which:

Figure 1 is a three-dimensional view of the utility model;

Figure 2 is an exploded view of the utility model;

Figure 3 is a cross-sectional view of the button of the present invention when it is not pressed;

Figure 4 is an enlarged view of the part A in Figure 3 of the utility model;

Figure 5 is a cross-sectional view of the bottle piston of the utility model when it moves to the top;

Figure 6 is a structural diagram of the one-way valve of the present invention;

Figure 7 is a schematic diagram of the utility model locking bottle cap and the bottle body.

【detailed description】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

As shown in Figures 1 to 7, a vacuum pump structure includes a pump body 2 extending into the bottle body 1. The pump body 2 is provided with a pump chamber 3, and the pump body 2 is connected to The lock bottle cap 4 is fixed to the bottle body. The pump chamber 3 is provided with a suction assembly 5 that can move up and down to pump the liquid in the bottle upwards. The lower end of the pump chamber 2 is provided with When the suction assembly 5 moves, the one-way valve 6 only discharges the liquid in the bottle 1 upwards. The upper end of the suction assembly 5 is connected with a button 7 that can drive the suction assembly 5 to work. The upper inner wall of the pump chamber 3 A locking cover 8 is provided. The suction assembly 5 includes an upper pump rod 51 that can pass through the locking cover 8 and has a suction channel 511. The upper pump rod 51 and the locking cover 8 are arranged between There is a spring 52. The lower end of the upper pump rod 51 and located in the pump chamber 3 is connected with a lower pump rod 53. The lower pump rod 53 is provided with a liquid inlet channel 531 communicating with the suction channel 511, so The lower pump rod 53 is provided with a liquid inlet hole 532 communicating with the liquid inlet channel 531, and the outer side of the lower pump rod 53 is sleeved to move relative to the upper pump rod 51 and the lower pump rod 53 and can resist The liquid enters the pump piston 54 in the liquid inlet channel 531 from the liquid inlet hole 532, the bottom of the bottle body 1 is provided with an inlet hole 11, and the bottom of the bottle body 1 is also provided with the ability to follow the inside of the bottle body 1. The bottle piston 12 that rises when the air pressure decreases, after pressing the button, the bottle piston can enter from the air inlet under the external atmospheric pressure, and the air pushes the bottle piston to move up slowly, thereby removing the emulsion in the flat body. It is sprayed from the nozzle and the liquid is stable. The outside of the bottle lock cap 4 is sleeved with a dust cap 9, and a dust cap 9 is provided between the bottle lock cap 4 and the dust cap 9 to prevent the dust cap 9 from falling.脱结构. The outer cover of the bottle-locking cap of the utility model is covered with a dust-proof cover, and an anti-removal structure is arranged between the bottle-locking cap and the dust-proof cover to prevent the dust-proof cover from falling, so as to prevent dust from entering the bottle body from the button and causing pollution , And the dust cover will not fall due to bumps during transportation, and the structure is stable.

As shown in Figures 1 to 7, in this embodiment, the anti-dropping structure includes at least two convex points 41 provided on the outer side wall of the lock bottle cap 4 in the circumferential direction, and the dust cap 9 A convex ring 91 is provided on the inner side wall of the convex point 41 to be engaged with the convex point 41. The dust cap can be well fixed on the lock bottle cap to prevent it from falling.

As shown in Figures 1 to 7, in this embodiment, the upper pump rod 51 is provided with a pushing portion 512 that can touch the upper end of the pump body piston 54 to push the piston 54 downward, and the lower The pump rod 53 is provided with a protrusion 533 that can touch the lower end of the piston 54 to push the pump body piston 54 upward. The spring pushes up the pump rod. At this time, the sealing lip on the piston of the pump body is in contact with the protrusion 533 of the lower pump rod to block the suction channel and the pump chamber. When the lower pump rod moves downward, the spring is compressed. When the lower pump rod descends, the sealing lip on the pump body piston is immediately separated from the protrusion of the lower pump rod. At this time, the suction channel is connected with the pump chamber below the pump body piston. After the rod descends for a certain distance, the pushing part of the upper pump rod touches the pump body piston and pushes the pump body piston downward. The downward movement of the pump body piston causes the gas or liquid in the pump chamber below the pump body piston to be sucked. The channel is discharged, then the button is released, the spring is extended, the upper pump rod rises a certain distance, the protruding part of the lower pump rod contacts the sealing lip of the pump body piston to block the pump chamber and the suction channel, and the upper pump rod continues to rise. In the process, the pump piston is pushed up by the lower pump rod which is clamped with the upper pump rod. At this time, the air pressure between the pump piston and the one-way valve is less than the air pressure in the bottle, and the liquid in the bottle pushes the one-way valve open. Into the pump room, press the button repeatedly to discharge the emulsion in the bottle for use. The operation is simple; the certain distance mentioned above is theoretically greater than 0, and the purpose is to make the piston of the pump fall or rise with the upper pump rod. Compared with the descending or rising, it has a delay to control the connection between the suction channel and the pump chamber. Generally, the distance is set to 0.5mm to 2mm because the size of the distance determines the size of the open outlet channel, which can be selected according to the particle size of the solution .

As shown in Figures 1 to 7, in this embodiment, the outer side of the locking cover 8 is provided with a bearing portion 81 for the lower end of the spring 52 to abut, and the outer side wall of the upper pump rod 51 is provided with a The pressing portion 513 of the spring 52 is pressed. This arrangement makes the springs all located outside the suction assembly, avoids contact with the emulsion in the pump body, and is clean and hygienic.

As shown in Figures 1 to 7, in this embodiment, the bottle lock cap 4 includes a first pressing portion 401 capable of fixing the pump body 2 and a first connecting portion 402 fixedly connected to the bottle body 1. , And a second connecting portion 403 connected to the dust cover 9. The locking cover has a simple structure and powerful functions.

In this embodiment, in FIG. 7, the first connecting portion 402 is clamped to the bottle body 1; when assembling, the bottle lock cap 4 is directly pressed up and down on the bottle body until the two are clamped and fixed. It is easy to assemble; of course, in FIG. 3, the first connecting portion 402 is threadedly connected to the bottle body 1, which is also easy to assemble.

As shown in FIGS. 1 to 7, in this embodiment, the first supporting portion 401, the first connecting portion 402, and the second connecting portion 403 are integrally formed with a stable structure.

As shown in Figures 1 to 7, in this embodiment, the upper end of the lower pump rod 53 extends into the suction channel 511, and a ring of convex edges 533 is provided on the outer side of the upper end of the lower pump rod 53. The suction channel 511 is provided with a step 512 capable of abutting against the convex edge 533 and preventing the lower pump rod 53 from falling out of the suction channel 511. The upper pump rod and the lower pump rod will not detach, ensuring the normal use of the suction components.

As shown in Figures 1 to 7, in this embodiment, the one-way valve 6 includes a circular buckle 61 buckled with the inner diameter of the bottom of the pump body 2, and the center of the circular buckle 61 is provided with The elastic sealing plug 62 can seal the liquid inlet of the pump body, and the elastic sealing plug 62 is connected with the circular buckle 61 through the elastic sheet 63 as a whole. Utilizing the structure of the product and the elastic effect of the plastic, when the one-way valve is assembled inside the pump chamber, the tail hole of the pump chamber can be tightly attached to the seal, but the elastic plug can be opened instantly when the inner cavity is vacuum suction. The advantage is It can be guaranteed that the product can be used in a 360-degree direction.

working principle:

1. Unplug the dust cover before use;

2. Press the button to overcome the elastic force of the spring to drive the upper pump rod to move down. The pump body piston lags due to friction with the pump chamber. At this time, the passage between the upper pump rod and the lower pump rod and the pump body piston is opened. Withstand the pump body piston and move down together, which can discharge the local gas in the pump chamber from the suction channel;

3. When the button is released, it is reset under the action of the spring force, the pump body piston is lagging, and the passage between the pump body piston and the lower pump rod and the upper pump rod is instantly sealed, and a partial vacuum is formed in the pump chamber under the action of atmospheric pressure. Push the bottle piston in the vacuum bottle to move upward, squeeze the emulsion into the one-way valve and suck it into the pump chamber. When you continue to press it, the emulsion can be ejected from the button nozzle hole.

Claims (10)

A vacuum pump structure, characterized in that it comprises a pump body (2) extending into the bottle body (1), the pump body (2) is provided with a pump chamber (3), and the pump body (2) is It is connected with a lock bottle cap (4) that can be fixed to the bottle body, and the pump chamber (3) is provided with a suction assembly (5) that can move up and down in it to pump the liquid in the bottle upwards. The lower end of the pump chamber (2) is provided with a one-way valve (6) that only discharges the liquid in the bottle (1) upward when the suction assembly (5) moves, and the upper end of the suction assembly (5) Connected with a button (7) capable of driving the suction assembly (5) to work, the upper inner wall of the pump chamber (3) is provided with a locking cover (8), and the suction assembly (5) includes a The upper pump rod (51) that locks the cover (8) and has a suction channel (511), a spring (52) is arranged between the upper pump rod (51) and the lock cover (8), and the upper pump rod (51) and the lock cover (8) are provided with a spring (52). The lower end of the pump rod (51) and located in the pump chamber (3) is connected with a lower pump rod (53), and the lower pump rod (53) is provided with a liquid inlet channel communicating with the suction channel (511) (531), the lower pump rod (53) is provided with a liquid inlet hole (532) communicating with the liquid inlet channel (531), and the outer side of the lower pump rod (53) is sleeved with The upper pump rod (51) and the lower pump rod (53) move and can block the liquid from entering the liquid inlet (532) into the pump piston (54) in the liquid inlet channel (531), the bottle body (1) The bottom of the bottle body (1) is provided with an air inlet (11), and the bottom of the bottle body (1) is also provided with a bottle piston (12) that can rise as the air pressure in the bottle body (1) decreases. The outer cover of (4) is provided with a dust-proof cover (9), and an anti-dropping structure capable of preventing the dust-proof cover (9) from falling is arranged between the lock bottle cap (4) and the dust-proof cover (9). A vacuum pump structure according to claim 1, characterized in that the anti-drop structure comprises at least two convex points (41) arranged on the outer side wall of the lock bottle cap (4) in the circumferential direction, so The inner side wall of the dust cover (9) is provided with a convex ring (91) that is engaged with the convex point (41). A vacuum pump structure according to claim 1, characterized in that the upper pump rod (51) is provided with a device that can touch the upper end of the piston (54) of the pump body to push the piston (54) downward. The pushing portion (512), the lower pump rod (53) is provided with a protruding portion (533) that can contact the lower end of the piston (54) to push the pump body piston (54) upward. The vacuum pump structure according to claim 1, wherein the outer side of the locking cover (8) is provided with a bearing portion (81) for abutting the lower end of the spring (52), and the upper pump rod The outer side wall of (51) is provided with a pressing part (513) capable of pressing the spring (52). A vacuum pump structure according to claim 1, characterized in that, the lock bottle cap (4) includes a first pressing part (401) capable of fixing the pump body (2), and the bottle body (1) ) A first connecting portion (402) fixedly connected, and a second connecting portion (403) connected with the dust cover (9). A vacuum pump structure according to claim 5, characterized in that the first connecting portion (402) is clamped to the bottle body (1). A vacuum pump structure according to claim 5, wherein the first connecting portion (402) is threadedly connected with the bottle body (1). The vacuum pump structure according to claim 5, characterized in that the first supporting portion (401), the first connecting portion (402) and the second connecting portion (403) are an integral structure. The vacuum pump structure according to claim 1, wherein the upper end of the lower pump rod (53) extends into the suction channel (511), and the upper end of the lower pump rod (53) is outside A ring of convex edges (533) is provided, and the suction channel (511) is provided with a device that can abut against the convex edges (533) and prevent the lower pump rod (53) from falling out of the suction channel (511) Step (512). The structure of a vacuum pump according to claim 1, wherein the one-way valve (6) includes a circular buckle (61) that is engaged with the inner diameter of the bottom of the pump body (2), and the circular An elastic sealing plug (62) capable of sealing the liquid inlet of the pump body is arranged in the center of the buckle ring (61), and the elastic sealing plug (62) is connected with the circular buckle ring (61) through an elastic sheet (63) as a whole.

Images