A spray pump with pre-press function

Abstract

The utility model relates to a kind of pre-press function's spray pump, belong to spray pump technical field, including pump body shell, the top of pump body shell integrally formed has locking cover, the inside of pump body shell and located the inner periphery fixed connection of locking cover has pump chamber body, the middle part of pump chamber body is fixedly installed with mounting seat.The utility model has the beneficial effect that by pressing press knob, the elastic force of reset spring a can be overcome, to promote valve core to move downwards, then when staff continues to extrude, reset spring b will be extruded downward and be in locking state, so that the bottom of valve core will be contacted with the bottom end of pump chamber b, and then gas will be discharged through liquid inlet groove, by using double-spring design in spray pump, the sensitivity of pressing degree and stroke can be reduced, and when user over-presses, liquid ejection phenomenon caused by instantaneous pressure can be reduced, further improve pre-press stability.

Description

Technical Field

[0001] This utility model relates to the field of spray pump technology, and in particular to a spray pump with pre-pressure function. Background Technology

[0002] In the fields of daily chemicals, pharmaceuticals and food, spray pumps are widely used as the core component for quantitative liquid delivery in the packaging of products such as shampoo, disinfectant and perfume. Their working principle is to atomize the liquid in the storage chamber by pressing the pump head and spraying it out through the nozzle to achieve quantitative and directional delivery.

[0003] A search revealed a Chinese patent (authorization announcement number CN209127265U) disclosing a spray pump structure, including a pump chamber. An upper pump rod is located within the pump chamber, and an upper suction plug is located at the lower end of the upper pump rod. The upper suction plug dynamically seals against the upper inner wall of the pump chamber. A pump core, capable of sealing the upper pump rod, is located within the pump chamber below the upper pump rod. A lower suction plug, capable of forming a dynamic seal with the lower inner wall of the pump chamber, is located at the lower end of the pump core. An exhaust groove rib, capable of opening the seal between the lower suction plug and the pump chamber, is located at the lower part of the pump chamber. A return spring is located between the lower part of the pump core and the pump chamber. A locking cover, preventing the upper pump rod from detaching from the pump chamber, is located on the pump chamber. The upper end of the upper pump rod extends beyond the locking cover, and a nozzle button is connected to the upper end of the upper pump rod. This patented technology is convenient to use and install, and provides good spraying effect.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that the traditional spray pump uses a single return spring for triggering. The single return spring is quite sensitive to the pressing stroke and force. If the user presses too hard, the instantaneous pressure may be too high, causing the liquid to spray too violently, resulting in waste or pollution. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a spray pump with pre-pressure function.

[0006] The technical solution of this utility model is as follows: a spray pump with pre-pressurization function includes a pump body shell, the top of which is integrally formed with a locking cover, a pump chamber body is fixedly connected inside the pump body shell and located on the inner periphery of the locking cover, a mounting seat is fixedly installed in the middle of the pump chamber body, the pump chamber body is divided into pump chamber a and pump chamber b by the mounting seat, a valve core is slidably installed inside the mounting seat, a valve stem is slidably installed inside the pump chamber body, a return spring a is provided between the mounting seat and the inner wall of the pump chamber body, the return spring a is sleeved on the outside of the valve stem, and a return spring b is sleeved on the outside of the valve core.

[0007] By adopting the above technical solution and using a double spring design in the spray pump, the sensitivity of pressing force and stroke can be reduced, and the liquid spraying phenomenon caused by instantaneous pressure can be reduced when the user presses too hard.

[0008] In a preferred embodiment, the locking cover is provided with a limiting component inside. The limiting component includes a pressing knob that is slidably connected inside the locking cover. Limiting blocks are fixedly connected to both sides of the pressing knob. Limiting grooves that cooperate with the limiting blocks are opened on both sides of the inner wall of the locking cover. The limiting blocks are slidably connected inside the corresponding limiting grooves.

[0009] By adopting the above technical solution, the synergistic cooperation of the limiting groove and the limiting block can play an important role in limiting the pressing stroke of the pressing knob, thereby preventing the pressing knob from deviating during the pressing process.

[0010] In a preferred embodiment, the push knob has a liquid guiding channel inside, and an atomizing point is installed inside the push knob. The liquid guiding channel is connected to the inside of the valve stem.

[0011] By adopting the above technical solution and setting up liquid guiding channels, liquids can be transported.

[0012] In a preferred embodiment, a sealing element is fixedly installed at the top of the inner wall of the pump chamber, and the sealing element is slidably connected to the outer wall of the valve stem.

[0013] By adopting the above technical solution and by setting the sealing element, the sealing performance between the pump chamber body and the locking cover can be improved, thus preventing liquid leakage.

[0014] In a preferred embodiment, the locking cover has an external thread on its outer side, and a dust cover is threadedly connected to the external thread of the locking cover.

[0015] By adopting the above technical solution and setting up a dust cover, the difficulty for children to open the cover can be increased, thereby preventing children from accidentally touching it.

[0016] In a preferred embodiment, the bottom of the pump chamber is provided with a liquid inlet groove, and the bottom end of the push knob abuts against the top end of the valve stem.

[0017] By adopting the above technical solution, it is convenient to enter the pump chamber under negative pressure.

[0018] In a preferred embodiment, the top of the pressing knob is provided with an arc surface that facilitates pressing.

[0019] By adopting the above technical solution, it is convenient for staff to press the button.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, pressing the pressing knob can overcome the elastic force of the return spring a, thereby pushing the valve core downward. Then, when the operator continues to press downward, the return spring b will be subjected to downward pressure and locked, so that the bottom of the valve core will contact the bottom end of the pump chamber b, and the gas will be discharged through the liquid inlet. By adopting a double spring design in the spray pump, the sensitivity of pressing force and stroke can be reduced, and when the user presses too much, the liquid spraying phenomenon caused by instantaneous pressure can be reduced, further improving the pre-pressure stability.

[0021] 2. In this utility model, the cooperation of the limiting groove and the limiting block can play an important role in limiting the pressing stroke of the pressing knob, thereby preventing the pressing knob from deviating during the pressing process and ensuring the normal pressing function of the pressing knob. Attached Figure Description

[0022] Figure 1 This utility model provides an overall perspective view of a spray pump with pre-pressure function; Figure 2 A half-sectional view of a spray pump with pre-pressurization function provided by this utility model; Figure 3 A partial schematic diagram of a spray pump with pre-pressurization function provided by this utility model; Figure 4 This utility model provides a spray pump with pre-pressure function. Figure 2 Enlarged view of point A in the middle.

[0023] Legend: 1. Pump body shell; 2. Press knob; 3. Dust cover; 4. Atomizing point; 5. Locking cover; 6. Liquid inlet groove; 7. Limiting block; 8. Liquid guide channel; 9. Pump chamber a; 10. Return spring a; 11. Seal; 12. Mounting base; 13. Pump chamber body; 14. Return spring b; 15. Valve core; 16. Limiting groove; 17. Valve stem. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Reference Figure 1-4A spray pump with pre-pressurization function includes a pump body shell 1. A locking cover 5 is integrally formed on the top of the pump body shell 1. A pump chamber body 13 is fixedly connected inside the pump body shell 1 and located on the inner periphery of the locking cover 5. A mounting seat 12 is fixedly installed in the middle of the pump chamber body 13. The pump chamber body 13 is divided into pump chamber a9 and pump chamber b by the mounting seat 12. A valve core 15 is slidably installed inside the mounting seat 12. A valve stem 17 is slidably installed inside the pump chamber body 13. A return spring a10 is provided between the mounting seat 12 and the inner wall of the pump chamber body 13. The return spring a10 is sleeved on the outside of the valve stem 17. A return spring a10 is sleeved on the outside of the valve core 15. When using the spray pump, the operator can press the button 2 to overcome the elastic force of the return spring a10, thereby pushing the valve core 15 downward. When the operator continues to press downward, the return spring b14 will be subjected to downward pressure and locked, which will cause the bottom of the valve core 15 to contact the bottom of the pump chamber b, thereby discharging the gas through the liquid inlet 6. By adopting a double spring design in the spray pump, the sensitivity of pressing force and stroke can be reduced, and when the user presses too hard, the liquid jet phenomenon caused by instantaneous pressure can be reduced, further improving the pre-pressure stability.

[0026] Specifically, the locking cover 5 has a limiting component inside, which includes a pressing knob 2 slidably connected inside the locking cover 5. Limiting blocks 7 are fixedly connected to both sides of the pressing knob 2. Through the coordinated action of the limiting groove 16 and the limiting blocks 7, the pressing stroke of the pressing knob 2 is effectively limited, preventing the pressing knob 2 from shifting during pressing and ensuring its normal pressing function. Limiting grooves 16 that cooperate with the limiting blocks 7 are provided on both sides of the inner wall of the locking cover 5. The limiting block 7 is slidably connected inside the corresponding limiting groove 16. The inside of the pressing knob 2 is provided with a liquid guiding channel 8. The liquid guiding channel 8 can be used to transport liquid. The inside of the pressing knob 2 is equipped with an atomizing point 4. The liquid guiding channel 8 is connected to the inside of the valve stem 17. The top of the inner wall of the pump chamber 13 is fixedly installed with a sealing element 11. The sealing element 11 can improve the sealing performance between the pump chamber 13 and the locking cover 5 and prevent liquid leakage. The sealing element 11 is slidably connected to the outer wall of the valve stem 17.

[0027] Specifically, the locking cover 5 has an external thread on its outer side, and a dust cover 3 is threaded to the external thread of the locking cover 5. The dust cover 3 makes it more difficult for children to open, so as to avoid children accidentally touching it. The bottom of the pump chamber 13 has an inlet groove 6, which facilitates the entry of liquid into the pump chamber 13 under negative pressure. The bottom end of the pressing knob 2 abuts against the top end of the valve stem 17. The top of the pressing knob 2 has an arc surface that is easy to press, so that the staff can press the pressing knob 2.

[0028] Working principle: First, when using the spray pump, the operator presses the pressing knob 2 to overcome the elastic force of the return spring a10, pushing the valve core 15 downward. Then, as the operator continues to press downward, the return spring b14 is subjected to downward pressure and locks itself, causing the bottom of the valve core 15 to contact the bottom of the pump chamber b. This allows gas to be discharged through the liquid inlet 6, creating a partial vacuum inside the pump chamber 13. Afterward, when the user stops pressing the pressing knob 2, the return spring b14 releases its elastic force. The force can push the valve core 15 and valve stem 17 upward, thereby drawing the liquid into the pump chamber a9 through the inlet groove 6. After several presses, the liquid can be sprayed out as a mist through the atomization point 4. By adopting a double spring design in the spray pump, the sensitivity of pressing force and stroke can be reduced. Furthermore, through the cooperation of the limiting groove 16 and the limiting block 7, the pressing stroke of the pressing knob 2 can play an important limiting role, thereby preventing the pressing knob 2 from deviating during the pressing process, thus ensuring the normal pressing function of the pressing knob 2.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A spray pump with pre-pressurization function, comprising a pump body housing (1), characterized in that: The top of the pump body shell (1) is integrally formed with a locking cover (5). The pump body shell (13) is fixedly connected inside the pump body shell (1) and located on the inner periphery of the locking cover (5). The pump body shell (13) is fixedly installed with a mounting seat (12) in the middle. The pump body shell (13) is divided into pump chamber a (9) and pump chamber b by the mounting seat (12). The valve core (15) is slidably installed inside the mounting seat (12). The valve stem (17) is slidably installed inside the pump body shell (13). A return spring a (10) is provided between the mounting seat (12) and the inner wall of the pump body shell (13). The return spring a (10) is sleeved on the outside of the valve stem (17). The return spring b (14) is sleeved on the outside of the valve core (15).

2. A spray pump with pre-pressurization function according to claim 1, characterized in that: The locking cover (5) is provided with a limiting component inside. The limiting component includes a pressing knob (2) that is slidably connected inside the locking cover (5). Both sides of the pressing knob (2) are fixedly connected to limiting blocks (7). Both sides of the inner wall of the locking cover (5) are provided with limiting grooves (16) that cooperate with the limiting blocks (7). The limiting blocks (7) are slidably connected inside the corresponding limiting grooves (16).

3. A spray pump with pre-pressurization function according to claim 2, characterized in that: The inside of the pressing knob (2) is provided with a liquid guiding channel (8), and the inside of the pressing knob (2) is provided with an atomizing point (4). The liquid guiding channel (8) is connected to the inside of the valve stem (17).

4. A spray pump with pre-pressurization function according to claim 1, characterized in that: A sealing element (11) is fixedly installed at the top of the inner wall of the pump chamber body (13), and the sealing element (11) is slidably connected to the outer wall of the valve stem (17).

5. A spray pump with pre-pressurization function according to claim 1, characterized in that: The locking cover (5) has an external thread on its outer side, and a dust cover (3) is threadedly connected to the external thread of the locking cover (5).

6. A spray pump with pre-pressurization function according to claim 2, characterized in that: The bottom of the pump chamber (13) is provided with an inlet groove (6), and the bottom end of the pressing knob (2) abuts against the top end of the valve stem (17).

7. A spray pump with pre-pressurization function according to claim 2, characterized in that: The top of the pressing knob (2) is provided with an arc surface that facilitates pressing.

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