Liquid carrying prevention pressing pump

Abstract

The invention discloses an anti-liquid-carrying pressing pump which comprises a pump body and a pressing head, the pump body comprises a pump chamber, a ventilation hole is formed in the upper end of the pump body, a connecting rod is fixed to the lower portion of the pressing head, a pumping device is arranged in the pump chamber, a lock cover is fixed to the upper end of the pump body, and a brake is arranged between the lock cover and the connecting rod. An angle limiting structure capable of limiting the rotating angle of the brake is arranged between the brake and the lock cover, a lifting structure capable of enabling the brake to ascend or descend when the brake rotates is arranged between the brake and the lock cover, and a sealing part is arranged on the brake. The pressing head is pressed down and is in threaded connection with the brake through the connecting rod to be locked on the brake, the brake is in a falling state, the sealing part blocks the upper end of the pump chamber to cut off communication between the ventilation hole and the pump chamber, and the solution is prevented from flowing out of the ventilation hole when the bottle is extruded or toppled. When the pressing head rotates and unlocks, the brake is driven to rotate and ascends to enable the sealing part to loosen the upper end of the pump chamber, so that the ventilation hole is communicated with the pump chamber for normal use of the pressing pump.

Description

[Technical field]

[0001] The invention relates to a liquid-carrying prevention pressing pump. [Background technology]

[0002] In the existing compression pump, the pump rod in the pump body is usually composed of an upper pump rod and a lower pump rod, and a piston is installed between the upper pump rod and the lower pump rod to make piston movement in the pump body. A ventilation hole is usually provided on the pump body so that when the piston moves up and down in the pump body, the space above the piston can be ventilated to avoid the formation of a low-pressure or high-pressure space above the piston. However, the problem is that when the compression pump is installed on a bottle for use, the bottle containing the solution is easily squeezed or tipped during transportation or storage, causing the solution to leak into the pump body from the ventilation hole. Since the ventilation hole is provided above the piston, the solution is easy to leak to the outside of the compression pump, or it is easy to be carried out of the outside of the compression pump by the outer side of the pump rod during the process of pressing the elbow and the head for pumping.

[0003] The present invention is made based on this situation. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a liquid-proof pressing pump, which has the characteristics of simple structure and preventing the liquid in the bottle from entering the pump chamber through the ventilation hole and being carried out.

[0005] The present invention is achieved through the following technical solutions:

[0006] A liquid-proof pressing pump comprises a pump body and a pressing head, wherein the pump body comprises a pump chamber, an air exchange hole connecting the pump chamber and the outside of the pump body is arranged at the upper end of the pump body, a hollow connecting rod is fixed below the pressing head, a pumping device connected to the connecting rod is arranged in the pump chamber, a spring for bouncing the pumping device upward is arranged in the pump chamber, a locking cover is fixed at the upper end of the pump body, a brake which can rotate relative to the locking cover is arranged between the locking cover and the connecting rod, the brake is sealedly connected to the locking cover, and an angle which can limit the rotation angle of the brake is arranged between the brake and the locking cover A limiting structure, a lifting and lowering structure is provided between the brake and the lock cover, which can make the brake rise or fall relative to the lock cover when the brake rotates relative to the lock cover, and the brake is provided with a closing portion which blocks the upper end of the pump chamber and cuts off the connection between the ventilation hole and the pump chamber when descending. In the locked state of the pressing pump, the pressing head is pressed down and locked on the brake through a connecting rod and a threaded connection with the brake, and the brake is in a descending state. When the pressing head rotates to unlock, it drives the brake to rotate and lifts the brake, so that the closing portion loosens the upper end of the pump chamber so that the ventilation hole is connected to the pump chamber.

[0007] As described above, the anti-liquid pressing pump, the lifting and lowering structure includes a slide groove arranged on the outside of the brake, and a slide column arranged on the lock cover, the slide column is inserted into the slide groove, the slide groove cooperates with the slide column, the slide groove has a high position and a low position, when the brake rotates relative to the lock cover, the slide column is guided by the slide groove to make the brake rise or fall relative to the lock cover.

[0008] In the anti-liquid pressing pump as described above, the slide groove has two closed ends, and the angle limiting structure consists of the closed ends and the slide column, which limits the movement of the slide column between the two closed ends to limit the rotation angle of the brake on the lock cover.

[0009] As described above, a liquid-proof pressing pump, the pumping device includes a pump rod connected and fixed to a connecting rod, the pump rod is hollow and communicated with the connecting rod, the connecting rod is provided with a one-way valve for allowing liquid in the pump rod to flow to the connecting rod, the pump rod is provided with a piston, and the spring is located below the piston.

[0010] In the above-mentioned anti-liquid-carrying pressing pump, the piston is a plastic piston, which is integrally formed with the pump rod.

[0011] As described above, the anti-liquid pressure pump comprises an outer ring and an inner ring extending downward from the top thereof, the inner ring is provided with an inner thread, the outer side of the connecting rod is provided with an outer thread matching the inner thread, and the slide groove is arranged on the side of the outer ring.

[0012] In the liquid-proof pressing pump as described above, the lower end of the inner ring is provided with a contraction opening which seals with the outer side of the connecting rod when the pressing pump is in the locked state, and the piston is provided with an upward piston ring which can be inserted into the outer side of the inner ring and sealed with the outer side of the inner ring when the pressing head bounces up.

[0013] In the anti-liquid-carrying pressing pump as described above, the connecting rod is located above the external thread and is provided with a pressing portion that can press on the top of the brake from above.

[0014] In the anti-liquid pressure pump as described above, the upper part of the brake is provided with a sealing side portion sealedly connected to the inner wall of the lock cover, and the sealing side portion is sealedly connected to the inner wall of the lock cover when the brake is raised and lowered relative to the lock cover.

[0015] In the above-mentioned anti-liquid-carrying press pump, the upper end of the pump body is provided with a flange extending outward, the bottom of the flange is provided with a downward sealing ring, and the lower end of the sealing ring is provided with a guide angle.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. In the locking state of the push pump of the present invention, the push head is pressed down and locked on the brake through the threaded connection with the brake through the connecting rod, and the brake is in the lowering state. The sealing part on the brake blocks the upper end of the pump chamber and cuts off the communication between the ventilation hole and the pump chamber, so as to prevent the bottle body from being collided, squeezed or tipped over during transportation, causing the solution in the bottle body to flow out of the ventilation hole into the pump chamber and be brought out to the outside of the push pump. When it is to be used, the push head is rotated to unlock, drive the brake to rotate, and make the brake rise, so that the sealing part loosens the upper end of the pump chamber, so that the ventilation hole is connected with the pump chamber, so that the pump chamber can be ventilated with the outside when the push head is pressed up and down.

[0018] 2. The piston is a plastic piston, which is integrally formed with the pump rod, has a simple structure, and has fewer parts, avoiding the use of a structure in which an upper pump rod and a lower pump rod are connected to a rubber piston.

[0019] 3. The lower end of the inner ring is provided with a shrinkage opening which seals with the outer side of the connecting rod when the pump is in the locked state, so as to prevent water from entering from the outside in the locked state. At the same time, the shrinkage opening is tightened on the connecting rod, which is also convenient for driving the brake to rotate and rise when the connecting rod is rotated to unlock. The piston is provided with an upward piston ring, which can be inserted into the outer side of the inner ring and sealed with the outer side of the inner ring when the head is pushed up, so as to prevent water from entering from the outside in the state of the head being pushed up.

[0020] 4. The sealing side of the brake is sealed and connected to the inner wall of the lock cover when the brake is raised or lowered relative to the lock cover. In the locked state or unlocked state, it prevents the bottle from being hit, squeezed or tipped over during transportation, causing the solution in the bottle to leak out from the ventilation hole and between the brake and the lock cover to the outside.

[0021] 5. The upper end of the pump body is integrally formed with a downward sealing ring and a corresponding guide angle through a flange. When bottling, the sealing ring is inserted into the inner side of the bottle mouth of the bottle body so that the sealing ring is pressed tightly against the side wall of the bottle mouth to seal. The locking cover is locked and fixed on the outer side of the bottle mouth of the bottle body. It has a simple structure and is easy to install. It avoids the use of gaskets for sealing and saves parts.

Brief Description of the Drawings

[0022] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 It is an exploded view of an anti-liquid-carrying press pump of the present invention;

[0024] Figure 2 It is a cross-sectional view of a liquid-proof pressing pump in a locked state according to the present invention;

[0025] Figure 3 It is a cross-sectional view of an anti-liquid-carrying pressing pump of the present invention in a springing state;

[0026] Figure 4It is a structural schematic diagram of an anti-liquid-carrying pressing pump installed on a bottle body according to the present invention. [Specific implementation method]

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figures 1 to 3 A liquid-proof pressing pump as shown in Figure 4 As shown, it is installed on a bottle body 100 for use, and includes a pump body 1 and a push head 2. The pump body 1 includes a pump chamber 11. The upper end of the pump body 1 is provided with a ventilation hole 12 connecting the pump chamber 11 and the outside of the pump body 1. The ventilation hole 12 is used to supply air to or deflate the pump body 1 during use. A hollow connecting rod 3 is fixed below the push head 2. A pumping device connected to the connecting rod 3 is provided in the pump chamber 11. A spring 4 for bouncing the pumping device upwards is provided in the pump chamber 11. A lock cover 5 is fixed to the upper end of the pump body 1. A brake 6 capable of rotating relative to the lock cover 5 is provided between the lock cover 5 and the connecting rod 3, the brake 6 is sealedly connected to the lock cover 5 and an angle limiting structure capable of limiting the rotation angle of the brake 6 is provided between the brake 6 and the lock cover 5, a lifting and lowering structure capable of raising or lowering the brake 6 relative to the lock cover 5 when the brake 6 rotates relative to the lock cover 5 is provided between the brake 6 and the lock cover 5, and a closing portion 61 is provided on the brake 6 for blocking the upper end of the pump chamber 11 and cutting off the communication between the ventilation hole 12 and the pump chamber 11 when descending, such as Figure 2 As shown, in the locked state of the pressing pump, the pressing head 2 is pressed down and locked on the brake 6 through the threaded connection with the brake 6 via the connecting rod 3, and the brake 6 is in the lowering state. The closing portion 61 on the brake 6 blocks the upper end of the pump chamber 11 and cuts off the communication between the ventilation hole 12 and the pump chamber 11, so as to prevent the bottle body from being collided, squeezed or tipped over during transportation, causing the solution in the bottle body to flow out of the ventilation hole 12 into the pump chamber 11 and be brought out to the outside of the pressing pump. When the pressing head 2 is rotated to unlock, it drives the brake 6 to rotate and lifts the brake 6 so that the closing portion 61 releases the upper end of the pump chamber 11, so that the ventilation hole 12 is connected with the pump chamber 11, so that the pump chamber 11 can be ventilated with the outside when the pressing head 2 is pressed up and down.

[0029] Preferably, the pumping device includes a pump rod 7 connected and fixed to the connecting rod 3, the pump rod 7 is hollow and communicated with the connecting rod 3, the connecting rod 3 is provided with a one-way valve 8 for allowing the liquid in the pump rod 7 to flow to the connecting rod 3, the pump rod 7 is provided with a piston 71, the pump chamber 11 is formed with a solution pumping cavity 1a below the piston 71, the spring 4 is located below the piston 71, the lower end of the pump body 1 is provided with a liquid inlet tube 9, and the pump body 1 is provided with a pump ball 10 below the piston 71 to block the lower end entrance of the pump chamber 11 and allow the liquid in the bottle body to enter the pump chamber 11 when the piston 71 moves upward. When in use, the push head 2 is pressed, the pump ball 10 blocks the lower inlet of the pump chamber 11, and the piston 71 moves downward to pump the solution in the solution outflow chamber 1a into the push head 2 through the pump rod 7, the one-way valve 8 and the connecting rod 3, and is pressed out from the outlet of the push head 2; under the action of the spring 4, the piston 8, the pump rod 7, the connecting rod 3 and the push head 2 are bounced upward together, the volume of the solution pump outflow chamber 1a increases to form a negative pressure, the pump ball 10 releases the lower inlet of the pump chamber 11, and the solution in the bottle body 100 enters the solution pump outflow chamber 1a from the lower inlet of the pump chamber 11.

[0030] Preferably, the piston 71 is a plastic piston, which is integrally formed with the pump rod 7 and has a simple structure and fewer parts.

[0031] Preferably, the lifting and lowering structure includes a slide groove 62 arranged on the outside of the brake 6, and a slide column 51 arranged on the lock cover 5, the slide column 51 is inserted into the slide groove 62, the slide groove 62 cooperates with the slide column 51, the slide groove 62 has a high position 621 and a low position 622, and when the brake 6 rotates relative to the lock cover 5, the slide column 51 is guided by the slide groove 62 to make the brake 6 rise or fall relative to the lock cover 5. Further, the slide groove 62 has two closed ends 623, and the angle limiting structure is composed of the closed ends 623 and the slide column 51, and the slide column 51 is limited to move between the two closed ends 623 by the two closed ends 623, thereby limiting the rotation angle of the brake 6 on the lock cover 5. Through the cooperation of the slide groove 62 and the slide column 51, the rotation angle of the brake 6 relative to the lock cover 5 and the lifting height can be conveniently controlled.

[0032] like Figure 2As shown, the push head 2 is pressed down and drives the connecting rod 3 to rotate so that the connecting rod 3 is threadedly connected with the brake 6 and locked on the brake 6. After the connecting rod 3 is locked on the brake 6, the push head 2 continues to rotate to drive the brake 6 to rotate on the lock cover 5, so that the high position 621 on the slide groove 62 rotates to the position of the slide column 51. Under the cooperation of the slide groove 62 and the slide column 51, the brake 6 drops so that the closing portion 61 blocks the upper end of the pump chamber 11 and cuts off the communication between the ventilation hole 12 and the pump chamber 11, and blocks the slide column 51 through the closed end 623 at one end of the high position 621 to limit the brake 6 and the connecting rod 3 from continuing to rotate; in the locked state, the spring is compressed, and under the action of the spring 4, the connecting rod 3 is threadedly connected with the brake 6 while also The brake 6 is tightly pressed upwards. When unlocking, the push head 2 is rotated in the opposite direction, and the connecting rod 3 rotates with the brake 6, so that the low position 622 on the slide groove 62 of the lock cover 5 rotates to the position of the slide column 51. With the cooperation of the slide groove 62 and the slide column 51, the brake 6 rises to make the closing portion 61 loosen the upper end of the pump chamber 11 so that the air exchange hole 12 is connected with the pump chamber 11, and the closed end 623 at one end of the low position 622 is blocked on the slide column 51 to limit the brake 6 from continuing to rotate. When the push head 2 and the connecting rod 3 continue to rotate under the action of external force, the connecting rod 3 rotates relative to the brake 6 and the two are disengaged from the threaded connection. Under the action of the spring 4, the piston 8, the pump rod 7, the connecting rod 3 and the push head 2 are bounced upward together, as shown in FIG. Figure 3 shown.

[0033] Preferably, the brake 6 includes an outer ring 63 and an inner ring 64 extending downward from its top, the inner ring 64 is provided with an internal thread 65, the outer side of the connecting rod 3 is provided with an external thread 31 threadably matched with the internal thread 65, and the slide groove 62 is arranged on the side of the outer ring 63.

[0034] Preferably, if Figure 2 As shown, the lower end of the inner ring 64 is provided with a contraction opening 66 which seals with the outer side of the connecting rod 3 when the pump is in the locked state, so as to prevent water from entering from the outside in the locked state. At the same time, the contraction opening 66 is tightened on the connecting rod 3, which is also convenient for the connecting rod 3 to rotate and lift the brake 6 when the connecting rod 3 is rotated to unlock; Figure 3 As shown, the piston 71 is provided with an upward piston ring 72, which can be inserted into the outer side of the inner ring 64 and sealed with the outer side of the inner ring 64 when the push head 2 pops up, to prevent water from entering from the outside when the push head 2 pops up.

[0035] Preferably, the connecting rod 3 is provided with a pressing portion 32 above the external screw thread 31 which can press on the top of the brake 6 from above, so that when the connecting rod 3 is rotated to be threadedly connected with the brake 6, the pressing portion 32 presses on the brake 6 to lock the connecting rod 3 on the brake 6, which is beneficial for the connecting rod 3 to drive the brake 6 to rotate and make the brake 6 descend.

[0036] Preferably, a sealing side portion 67 is provided on the upper portion of the brake 6 and is sealed to the inner wall of the locking cover 5. The sealing side portion 67 is sealed to the inner wall of the locking cover 5 when the brake 6 is raised or lowered relative to the locking cover 5. In a locked state or an unlocked state, the bottle body is prevented from being collided, squeezed or tipped over during transportation, causing the solution in the bottle body to leak out from the ventilation hole 12 and between the brake 6 and the locking cover 5 to the outside.

[0037] Preferably, the upper end of the pump body 1 is provided with a flange 13 extending outward, the bottom of the flange 13 is provided with a downward sealing ring 14, and the lower end of the sealing ring 14 is provided with a guide angle 15, such as Figure 4 As shown, the guide angle 15 facilitates the insertion of the sealing ring 14 into the inner side of the bottle mouth of the bottle body 100. The sealing ring 14 is sealed and connected to the inner side of the bottle mouth of the bottle body 100. The locking cover 5 is locked and fixed on the outer side of the bottle mouth of the bottle body 100. The structure is simple, and the use of gasket sealing is avoided, saving parts.

Claims

1. A liquid-proof pressing pump, comprising a pump body (1) and a pressing head (2), wherein the pump body (1) comprises a pump chamber (11), and an air exchange hole (12) is provided at the upper end of the pump body (1) for connecting the pump chamber (11) and the outside of the pump body (1), characterized in that: A hollow connecting rod (3) is fixed below the push head (2); a pumping device connected to the connecting rod (3) is provided in the pump chamber (11); a spring (4) for bouncing the pumping device upward is provided in the pump chamber (11); a lock cover (5) is fixed to the upper end of the pump body (1); a brake (6) capable of rotating relative to the lock cover (5) is provided between the lock cover (5) and the connecting rod (3); the brake (6) is sealedly connected to the lock cover (5); an angle limiting structure capable of limiting the rotation angle of the brake (6) is provided between the brake (6) and the lock cover (5); a spring (4) for limiting the rotation angle of the brake (6) relative to the lock cover (5) is provided between the brake (6) and the lock cover (5); ) is rotated to enable the brake (6) to rise or fall relative to the lock cover (5); the brake (6) is provided with a closing portion (61) which blocks the upper end of the pump chamber (11) and cuts off the communication between the ventilation hole (12) and the pump chamber (11) when descending; in the locked state of the pressing pump, the pressing head (2) is pressed down and is threadedly connected to the brake (6) through the connecting rod (3) and locked on the brake (6), and the brake (6) is in the descending state; when the pressing head (2) is rotated to unlock, it drives the brake (6) to rotate and causes the brake (6) to rise, so that the closing portion (61) releases the upper end of the pump chamber (11) so that the ventilation hole (12) is connected to the pump chamber (11).

2. The anti-liquid-carrying press pump according to claim 1, characterized in that: The lifting and lowering structure comprises a slide groove (62) arranged on the outside of the brake (6), and a slide column (51) arranged on the lock cover (5); the slide column (51) is inserted into the slide groove (62); the slide groove (62) matches with the slide column (51); the slide groove (62) has a high position (621) and a low position (622); when the brake (6) rotates relative to the lock cover (5), the slide column (51) is guided by the slide groove (62) to make the brake (6) rise or fall relative to the lock cover (5).

3. The anti-liquid-carrying press pump according to claim 2, characterized in that: The slide groove (62) has two closed ends (623), and the angle limiting structure is composed of the closed ends (623) and the slide column (51). The two closed ends (623) limit the movement of the slide column (51) between the two closed ends (623), thereby limiting the rotation angle of the brake (6) on the lock cover (5).

4. A liquid-proof pressing pump according to any one of claims 1 to 3, characterized in that: The pumping device comprises a pump rod (7) connected and fixed to the connecting rod (3); the pump rod (7) is hollow and communicates with the connecting rod (3); a one-way valve (8) is provided on the connecting rod (3) for allowing liquid in the pump rod (7) to flow toward the connecting rod (3); a piston (71) is provided on the pump rod (7); and the spring (4) is located below the piston (71).

5. The anti-liquid-carrying press pump according to claim 4, characterized in that: The piston (71) is a plastic piston, which is integrally formed with the pump rod (7).

6. The anti-liquid-carrying press pump according to claim 4, characterized in that: The brake (6) comprises an outer ring (63) and an inner ring (64) extending downward from the top thereof, the inner ring (64) being provided with an inner thread (65), the outer side of the connecting rod (3) being provided with an outer thread (31) threadably matched with the inner thread (65), and the slide groove (62) being provided on the side surface of the outer ring (63).

7. The anti-liquid-carrying press pump according to claim 6, characterized in that: The lower end of the inner ring (64) is provided with a contraction opening (66) which seals with the outer side of the connecting rod (3) when the pressing pump is in the locked state. The piston (71) is provided with an upward-facing piston ring (72). When the pressing head (2) bounces up, the piston ring (72) can be inserted into the outer side of the inner ring (64) and sealed with the outer side of the inner ring (64).

8. The anti-liquid-carrying press pump according to claim 6, characterized in that: The connecting rod (3) is provided with a pressing portion (32) above the external screw thread (31) and capable of pressing on the top of the brake (6) from above.

9. An anti-liquid-carrying press pump according to any one of claims 1-3 and 5-8, characterized in that: The upper part of the brake (6) is provided with a sealing side portion (67) which is sealed to the inner wall of the lock cover (5); the sealing side portion (67) is sealed to the inner wall of the lock cover (5) when the brake (6) is raised or lowered relative to the lock cover (5).

10. An anti-liquid-carrying press pump according to any one of claims 1-3 and 5-8, characterized in that: The upper end of the pump body (1) is provided with a flange (13) extending outward, the bottom of the flange (13) is provided with a downwardly facing sealing ring (14), and the lower end of the sealing ring (14) is provided with a guide angle (15).

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