Novel piston-free pump head

Abstract

The utility model discloses a novel piston-free pump head which comprises a pump chamber with an opening in the upper end, a resettable pump head body is installed in the pump chamber, a base cover used for being installed on a bottle opening is installed at the upper end of the pump chamber, a first protruding ring is arranged on the inner wall of the base cover, and the first protruding ring abuts against the outer wall of the pump head body. The installation gap between the base cover and the pump head is sealed, the pump head is pressed, air in the pump chamber enters the bottle through the air inlet hole, liquid in the bottle is discharged through the liquid outlet pipe and the pump head, the pump head is loosened, external air enters the pump chamber through the air supply channel, circulation is formed, an additional piston structure is not needed, and on the basis that normal liquid outlet is guaranteed, the working efficiency is improved. The structure is optimized, the production and assembly process is simplified, manufacturing is easier, the piston structure does not need to be damaged in the installation process, and the situation that the sealing effect of the piston structure becomes poor after repeated use, air leakage occurs, and consequently the product function is unstable is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of packing containers for storing liquid, especially a kind of novel pistonless pump head. BACKGROUND

[0002] The emulsion pump is usually used in daily cleaning and skin care products such as hand washing liquid, shower gel and facial cleanser to pump out the emulsion. It is used a lot in daily life. The traditional pump head includes a pump chamber, a resettable pump head is installed in the pump chamber, and the air in the pump chamber is pressed into the bottle by pressing the pump head, so that the liquid in the bottle is squeezed out through the liquid outlet pipe and the pump head. During the pressing of the pump head, the air in the pump chamber needs to flow towards the bottle, rather than from the gap between the pump head and the pump chamber to the outside. Therefore, a sealing piston is usually installed between the pump head and the pump chamber. By moving the sealing piston, the air in the pump chamber is pressed into the bottle. This structure needs to be improved. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a kind of novel pistonless pump head.

[0004] The utility model solves the technical problems by adopting the following technical solutions:

[0005] A kind of novel pistonless pump head, including the pump chamber of upper end opening, resettable pump head is installed in the pump chamber, the upper end of the pump chamber is installed with the base cover for installing on bottle mouth, the inner wall of the base cover is provided with first protruding ring, first protruding ring is combined with the outer wall of the pump head, and the installation gap between the base cover and pump head is sealed.

[0006] The base cover has an installation part and a sealing part, the upper end of the installation part and the sealing part is connected by a connecting part, the first protruding ring is arranged on the inner wall of the sealing part, the installation part is provided with a threaded part fixedly connected with the bottle mouth, and the sealing part is inserted between the outer wall of the pump head and the inner wall of the pump chamber.

[0007] The inner wall of the pump chamber is provided with a second protruding ring, the second protruding ring is combined with the outer side of the sealing part, and the installation gap between the sealing part and the pump chamber is sealed.

[0008] The pump chamber opening extends outwardly with a plurality of annularly arranged first support pieces, the air supplementing channel includes air supplementing notches formed between adjacent first support pieces, the base cover is provided with a limiting ring, after installation, the upper end surface of the limiting ring is flush with the upper end surface of the bottle mouth, and the upper end surface of the limiting ring and the bottle mouth is installed with an air inlet piece between the bottom surface of the first support piece, the air of the outside passes through the gap between the outer wall of the base cover and the bottle mouth, and pushes away the air inlet piece, and then enters the bottle through the air supplementing notches from the gap between the pump chamber and the inner wall of the bottle mouth.

[0009] The bottom of the pump chamber is provided with a liquid outlet pipe, pressing the pump head, the air in the pump chamber enters the bottle through the air inlet hole, the liquid in the bottle is discharged through the liquid outlet pipe and the pump head, and the external air enters the pump chamber through the air supplement channel to form a cycle.

[0010] The pump head is reset by a spring, the spring includes a reset spring and a liquid outlet nozzle reset by a pre-pressing spring, the liquid outlet nozzle communicates with the liquid outlet pipe, pressing the pump head, the pre-pressing spring is compressed, and the liquid outlet of the liquid outlet nozzle communicates with the liquid outlet part of the pump head.

[0011] The liquid outlet nozzle communicates with the liquid outlet pipe through the reset spring.

[0012] The liquid outlet nozzle communicates with the liquid outlet pipe through the reset spring.

[0013] The outer side of the connecting pipe is provided with a second supporting sheet, and the lower end of the reset spring is fixed on the second supporting sheet.

[0014] The lower end of the reset spring is installed on the upper end of the connecting pipe, and the liquid outlet nozzle communicates with the connecting pipe through the reset spring.

[0015] The reset spring is sleeved on the outer side of the pump head, the upper end of the reset spring is fixed with the upper end of the pump head, and the lower end of the reset spring is installed on the top surface of the base cover.

[0016] The pump head is provided with a sliding block, and the pump chamber is provided with a sliding groove corresponding to the sliding block, and the sliding block is slidingly installed in the sliding groove.

[0017] The spring is provided with a through hole, and the pump head is provided with an insertion part corresponding to the through hole, in use, the pump head is rotated to align the insertion part with the through hole.

[0018] The lower end of the pump head is provided with a third protruding ring, and the third protruding ring is sealingly abutted with the inner wall of the pump chamber, pressing the pump head, the space between the pump chamber and the pump head located between the first protruding ring and the third protruding ring forms a pneumatic spring.

[0019] The utility model discloses a beneficial effect is: the utility model is installed in the pump chamber has the pump head of resettable, the upper end of pump chamber is installed the base cover for installing on the bottle mouth, the inner wall of base cover is provided with first protruding ring, and first protruding ring and the outer wall of pump head are combined, seal the installation gap between base cover and pump head, press the pump head, and the air in the pump chamber enters the bottle through the air inlet hole, and the liquid in the bottle is discharged through the liquid outlet pipe, pump head, and the pump head is loosened, and the air of outside enters the pump chamber through the air supplement channel, forms the circulation, and need not to set up piston structure additionally, on the basis of guaranteeing normal liquid discharge, optimization structure, simplifies the production assembly process, and manufacturing is easier, need not worry that piston structure is damaged when installing, also need not worry that piston structure sealing effect is worse after using for many times, and the air leakage condition is produced, leads to the case of product function unstable. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model is further illustrated below in connection with the drawings and examples.

[0021] Figure 1 It is the schematic drawing of example 1;

[0022] Figure 2 It is the schematic drawing of example 2;

[0023] Figure 3 It is the schematic drawing of example 3;

[0024] Figure 4 It is the pump chamber structure drawing of example 3;

[0025] Figure 5 It is the schematic drawing of example 4;

[0026] Figure 6 It is the schematic drawing of example 5 one;

[0027] Figure 7 It is the schematic drawing of example 5 two;

[0028] Figure 8 It is the schematic drawing of example 6;

[0029] Figure 9 It is Figure 1 The close-up view of A in the middle;

[0030] Figure 10 It is the structure drawing of spring;

[0031] Figure 11 It is the structure drawing of pump head. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] It is understood that the description is only exemplary and is not intended to limit the scope of the utility model.

[0034] Some embodiments of the utility model provide a kind of described below in combination with the drawings.

[0035] With reference to Figures 1-11 A new pistonless pump head, comprising an open upper end pump chamber 1, the pump chamber 1 is installed with resettable pump head 3, the upper end of the pump chamber 1 is installed with the base cover 4 for installing on the bottle mouth, the inner wall of the base cover 4 is provided with the first protruding ring 5, the first protruding ring 5 is combined with the outer wall of the pump head 3, the installation gap between the base cover 4 and pump head 3 is sealed, the bottom of the pump chamber 1 is provided with liquid outlet pipe 7, press the pump head 3, the air in the pump chamber 1 enters the bottle through air inlet hole 6, the liquid in the bottle is discharged through liquid outlet pipe 7, pump head 3, loosen the pump head 3, the air outside enters the pump chamber through air supplement channel, forms circulation, without additional piston structure, on the basis of guaranteeing normal liquid discharge, optimize structure, simplify production assembly process, manufacture is easier, without worrying about piston structure is damaged during installation, also do not need to worry about after using for many times, piston structure sealing effect is poor, air leakage occurs, leading to product function unstable.

[0036] The base cover 4 has installation part 8, sealing part 9, the upper end of the installation part 8 and sealing part 9 is connected by connecting part 10, the first protruding ring 5 is arranged on the inner wall of the sealing part 9, the installation part 8 is provided with the thread part fixedly connected with the bottle mouth, the sealing part 9 is inserted and mounted between the outer wall of the pump head 3 and the inner wall of the pump chamber 1.

[0037] The inner wall of the pump chamber 1 is provided with the second protruding ring 11, the second protruding ring 11 is combined with the outer side of the sealing part 9, and the installation gap between the sealing part 9 and the pump chamber 1 is sealed.

[0038] The first protruding ring 5 and the second protruding ring 11 respectively seal the installation gap between the base cover 4 and the pump head 3 and the installation gap between the sealing part 9 and the pump chamber 1, thereby effectively preventing the air in the pump chamber 1 from flowing in the direction of the open upper end, ensuring that the air in the pump chamber 1 can enter the bottle from the air inlet hole 6 when the pump head 3 is pressed, thereby ensuring the liquid discharge effect and preventing the situation of no liquid discharge after the pump head 3 is pressed.

[0039] The pump chamber 1 is outwardly extended with a plurality of annularly arranged first support pieces 12, the air supplement channel comprises air supplement gaps 13 formed between adjacent first support pieces 12, a limiting ring 14 is arranged in the base cover 4, after installation, the upper end surface of the limiting ring 14 is flush with the upper end surface of the bottle mouth, the air inlet piece 15 is installed between the upper end surface of the limiting ring 14 and the bottle mouth and the bottom surface of the first support piece 12, the air outside passes through the gap between the base cover 4 and the outer wall of the bottle mouth, and pushes away the air inlet piece 15, and then enters the bottle through the air supplement gaps 13 and the gap between the pump chamber 1 and the inner wall of the bottle mouth (as shown in Figure 7 B is the bottle mouth, and C is the air supplement path).

[0040] When air supplementing, the pump head 3 is reset, so that the space in the pump head 3 and the pump chamber 1 is increased, a negative pressure state is formed, the air inlet piece 15 is pushed away at one end close to the limiting ring 14 (the other end is pressed tightly by the upper end surface of the bottle mouth and the bottom surface of the first support piece 12, and it is difficult to deform), so that the air enters the bottle through the air supplement gaps 13 and the gap between the pump chamber 1 and the inner wall of the bottle mouth.

[0041] The on-off of the air supplement channel in the embodiment is at the air inlet piece 15, when the air inlet piece 15 is pushed away, the air supplement channel is opened, and when the pressure in the pump head 3 and the pump chamber 1 returns to the atmospheric pressure, the bottom surface of the air inlet piece 15 and the top surface of the limiting ring 14 are recombined, so that the air supplement channel is closed.

[0042] The pump head 3 is reset by a spring, the spring comprises a reset spring 2 and a liquid outlet nozzle 17 reset by a pre-pressing spring 16, the liquid outlet nozzle 17 is in communication with the liquid outlet pipe 7, the pre-pressing spring 16 is compressed when the pump head 3 is pressed, and the liquid outlet of the liquid outlet nozzle 17 is in communication with the liquid outlet part 20 of the pump head 3.

[0043] Embodiment 1: refer to Figure 1 The liquid outlet nozzle 17 is in communication with the liquid outlet pipe 7 through the reset spring 2, when the pump head 3 is pressed, the air between the reset spring 2 and the pump chamber 1 enters the inside of the bottle through the air inlet hole 6, and the liquid can be normally discharged.

[0044] The pump chamber 1 is also provided with a guide cylinder 26, the reset spring 2 is inserted in the guide cylinder 26, when installed, the spring is directly placed in the guide cylinder 26, and then the corresponding components (such as the pump head 3, the base cover 4, etc.) are installed, so that the spring is preliminarily compressed, thereby fixing the lower end of the reset spring 2 at the lower end of the guide cylinder 26, which is convenient and simple to install, and can also avoid the inclination of the spring, when the pump head 3 is pressed, the guide cylinder 26 can ensure that the spring will not shake when compressed.

[0045] Embodiment 2: refer to Figure 2 The pump chamber 1 is also provided with a guide cylinder 26, the reset spring 2 is inserted in the guide cylinder 26, when installed, the spring is directly placed in the guide cylinder 26, and then the corresponding components (such as the pump head 3, the base cover 4, etc.) are installed, so that the spring is preliminarily compressed, thereby fixing the lower end of the reset spring 2 at the lower end of the guide cylinder 26, which is convenient and simple to install, and can also avoid the inclination of the spring, when the pump head 3 is pressed, the guide cylinder 26 can ensure that the spring will not shake when compressed.

[0046] Embodiment 3: refer to Figure 3 、 4 The outer side of the connecting pipe 18 is provided with a second supporting piece 21, and the lower end of the reset spring 2 is fixed on the second supporting piece 21. The difference between this embodiment and embodiment 2 is that the fixing position of the lower end of the reset spring 2 is different.

[0047] Embodiment 4: refer to Figure 5 The lower end of the reset spring 2 is installed at the upper end of the connecting pipe 18, the liquid outlet nozzle 17 and the connecting pipe 18 are communicated through the reset spring 2, the overall length of the spring is reduced, thereby reducing the possibility of shaking when the spring is compressed.

[0048] Embodiment 5: refer to Figure 6 、 7 The reset spring 2 is sleeved on the outer side of the pump head 3, the upper end of the reset spring 2 is fixed with the upper end of the pump head 3, and the lower end of the reset spring 2 is installed on the top surface of the base cover 4. In this embodiment, the pump chamber 1 is also provided with the connecting pipe 18, when the pump head 3 is pressed, the liquid outlet nozzle 17 and the connecting pipe 18 slide relative to each other, and the connecting pipe 18 can ensure that the spring will not shake when compressed.

[0049] Embodiment 6: refer to Figure 8In the embodiment, the spring only includes the reset spring 2 and the liquid outlet nozzle 17. When the pump head 3 is pressed, the reset spring 2 is compressed, and the liquid outlet nozzle 17 moves upward relative to the pump head 3, so that the liquid outlet 19 of the liquid outlet nozzle 17 communicates with the liquid outlet portion 20 of the pump head 3, that is, the pump head 3 moves downward, and the overall length of the spring is shortened, but the amplitude of the downward movement of the pump head 3 is greater than the amplitude of the overall shortening of the spring, so that the effect of the upward movement of the liquid outlet nozzle 17 relative to the pump head 3 is achieved.

[0050] The pump head 3 is provided with a sliding block 22, and the pump chamber 1 is provided with a sliding groove 23 corresponding to the sliding block 22. The sliding block 22 is slidingly installed in the sliding groove 23. The spring is provided with a through hole 24, and the pump head 3 is provided with an insertion portion 25 corresponding to the through hole 24. In the first use, the positions of the sliding block 22 and the sliding groove 23 are staggered, and the insertion portion 25 and the through hole 24 are also staggered. At this time, the pump head 3 cannot be normally pressed downward, which prevents being pressed by mistake before being sold, so as to affect the subsequent sales. In use, the pump head 3 is rotated, the insertion portion 25 is aligned with the through hole 24, and the positions of the sliding block 22 and the sliding groove 23 are also aligned. At this time, the pump head 3 can be normally used, and in subsequent use, it is not necessary to rotate additionally. If it is necessary to prevent mistaken pressing, the pump head 3 can be rotated again. When going out, mistaken pressing can be avoided. When being placed in luggage, mistaken pressing can be avoided, so as to prevent the liquid from flowing out and wetting the articles in the luggage.

[0051] The bottom of the pump chamber 1 is provided with an insertion groove, and the upper end of the liquid outlet pipe 7 is inserted into the insertion groove. The lower end of the liquid outlet pipe 7 is provided as a sharp end, so as to prevent the end of the liquid outlet pipe 7 from being completely attached to the inner wall of the bottle, and to prevent the liquid outlet pipe 7 from being blocked.

[0052] The lower end of the pump head 3 is provided with a third protruding ring 27, and the third protruding ring 27 is sealingly attached to the inner wall of the pump chamber 1. When the pump head 3 is pressed, the space between the pump chamber 1 and the pump head 3, which is located between the first protruding ring 5 and the third protruding ring 27, forms a pneumatic spring, that is, a closed space. When the space increases, the internal air pressure is less than the atmospheric pressure. When the pump head 3 is released, the atmospheric pressure pushes the space to be reduced, so as to improve the reset effect of the pump head 3.

[0053] In the present application, the term "a plurality of" means two or more, unless otherwise expressly specified. The term "and / or" as used herein encompasses all possibilities of combinations of one or more relevant items. The terms "mounting", "connected", "connecting", "fixed", and the like, should be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through intermediate media. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] It should be noted that when an element is referred to as being "mounted", "attached", "fixed" or "disposed" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like, means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A new type of pistonless pump head comprising a pump chamber (1) open at the upper end, in which a pump head (3) is mounted which is resettable, characterized in that The upper end of the pump chamber (1) is provided with a base cover (4) for mounting on the bottle mouth, the inner wall of the base cover (4) is provided with a first protruding ring (5), the first protruding ring (5) is in abutment with the outer wall of the pump head (3), and the mounting gap between the base cover (4) and the pump head (3) is sealed.

2. The new type of pistonless pump head according to claim 1, characterized in that The base cover (4) is composed of a mounting portion (8) and a sealing portion (9), the upper ends of the mounting portion (8) and the sealing portion (9) are connected through a connecting portion (10), the first protruding ring (5) is arranged on the inner wall of the sealing portion (9), the mounting portion (8) is provided with a threaded portion fixedly connected with the bottle mouth, and the sealing portion (9) is inserted between the outer wall of the pump head (3) and the inner wall of the pump chamber (1).

3. The new type of pistonless pump head according to claim 2, characterized in that The inner wall of the pump chamber (1) is provided with a second protruding ring (11), the second protruding ring (11) is in abutment with the outer side of the sealing portion (9), and the mounting gap between the sealing portion (9) and the pump chamber (1) is sealed.

4. The new pump head without piston according to claim 1, characterized in that The pump chamber (1) is provided with a plurality of first support pieces (12) arranged in a ring shape and extending outwardly, a gas supplement channel includes a gas supplement gap (13) formed between adjacent first support pieces (12), the base cover (4) is provided with a limiting ring (14), after installation, the upper end surface of the limiting ring (14) is flush with the upper end surface of the bottle mouth, the upper end surface of the limiting ring (14) and the bottle mouth and the bottom surface of the first support piece (12) are provided with an air inlet piece (15), the air outside passes through the gap between the base cover (4) and the outer wall of the bottle mouth, and then passes through the air inlet piece (15) and the gas supplement gap (13) to enter the bottle from the gap between the pump chamber (1) and the inner wall of the bottle mouth.

5. The new pump head without piston according to claim 1, characterized in that The bottom of the pump chamber (1) is provided with a liquid outlet pipe (7), when the pump head (3) is pressed, the air in the pump chamber (1) enters the bottle through the air inlet hole (6), the liquid in the bottle is discharged through the liquid outlet pipe (7) and the pump head (3), when the pump head (3) is released, the air outside enters the pump chamber through the gas supplement channel, and the circulation is formed.

6. The new type of pistonless pump head according to claim 5, characterized in that The pump head (3) is reset by a spring, the spring includes a reset spring (2) and a liquid outlet nozzle (17) reset by a pre-pressing spring (16), the liquid outlet nozzle (17) is in communication with the liquid outlet pipe (7), when the pump head (3) is pressed, the pre-pressing spring (16) is compressed, and the liquid outlet (19) of the liquid outlet nozzle (17) is in communication with the liquid outlet portion (20) of the pump head (3).

7. The new type of piston-less pump head according to claim 6, characterized in that The liquid outlet nozzle (17) and the liquid outlet pipe (7) are in communication through the reset spring (2).

8. The new type of pistonless pump head according to claim 6, characterized in that The pump chamber (1) is provided with a connecting pipe (18), the liquid outlet nozzle (17) and the liquid outlet pipe (7) are in communication through the connecting pipe (18).

9. The new type of piston-less pump head according to claim 8, characterized in that The outer side of the connecting pipe (18) is provided with a second support piece (21), and the lower end of the reset spring (2) is fixed on the second support piece (21).

10. The novel pump head without piston according to claim 8, characterized in that The lower end of the reset spring (2) is mounted on the upper end of the connecting pipe (18), and the liquid outlet nozzle (17) and the connecting pipe (18) are in communication through the reset spring (2).

11. The new type of pistonless pump head according to claim 6, characterized in that The reset spring (2) is sleeved outside the pump head (3), the upper end of the reset spring (2) is fixed with the upper end of the pump head (3), and the lower end of the reset spring (2) is installed on the top surface of the base cover (4).

12. The new type of pump head without piston according to claim 6, characterized in that A through hole (24) is arranged on the spring, and a plug-in part (25) is arranged on the pump head (3) corresponding to the through hole (24); in use, the pump head (3) is rotated, and the plug-in part (25) is aligned with the through hole (24).

13. The new pump head without piston according to claim 1, characterized in that A sliding block (22) is arranged on the pump head (3), and a sliding groove (23) is arranged in the pump chamber (1) corresponding to the sliding block (22); the sliding block (22) is slidingly installed in the sliding groove (23).

14. The new pump head without piston according to claim 1, characterized in that A third protruding ring (27) is arranged outside the lower end of the pump head (3), the third protruding ring (27) is sealingly abutted with the inner wall of the pump chamber (1), the space between the pump chamber (1) and the pump head (3) located between the first protruding ring (5) and the third protruding ring (27) forms a pneumatic spring.

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