Lock head type all-plastic emulsion pump

Abstract

The invention relates to the technical field of all-plastic emulsion pumps, and discloses a lock head type all-plastic emulsion pump which is made of plastic and comprises a pump body, a pressing head, an auxiliary column, a piston, a lock cover, threads, a main column assembly structure and an elastic pad valve assembly. The main column assembly structure comprises a main column and a guide column; the outer wall of the main column is provided with an upper buckle groove, a guide sliding groove and a lower buckle groove. Bulges are clamped on the inner walls of the guide columns; the clamping protrusions can be connected into the guide sliding grooves in an embedded mode and can slide relatively on the guide sliding grooves so that the main column can ascend and descend. The elastic pad valve assembly can be used for opening or sealing and closing the liquid feeding channel. According to the lock head type all-plastic emulsion pump, the main column can stretch out and be hidden conveniently, the main column has the telescopic function, pressure borne by the elastic cushion valve assembly is reduced, fatigue deformation and aging of the elastic cushion valve assembly are prevented, the pressing head can be adjusted and locked at any time, the all-plastic emulsion pump can be closed at any time, operation is easy and convenient, and the working efficiency is improved. The device has the characteristics of better sealed storage and convenience in carrying.

Description

Technical Field

[0001] The present invention relates to the technical field of all-plastic lotion pumps, and in particular to a lock-type all-plastic lotion pump. Background Art

[0002] An all-plastic lotion pump, primarily made of plastic, is used to pump and dispense lotions. It's widely used in everyday packaging for skincare, shampoo, detergents, and other products. However, the plastic springs in traditional all-plastic lotion pumps are susceptible to fatigue, deformation, and aging due to long-term pressure. This shortens the lifespan of the plastic springs or causes them to lose their elasticity, rendering them inoperable.

[0003] In order to solve the above technical problems, the Chinese patent application number CN202420687342.4 discloses a double back-suction all-plastic lotion pump, which is an all-plastic structure and includes a pump body, a pressing head, a main column, a secondary column, a spring, a one-way ball valve, a piston, a back-suction rod, a screw sleeve, a gasket, a locking cover and a buckle; the buckle is removably clamped on the locking cover and is located between the pressing head and the screw sleeve. A buckle is arranged between the pressing head and the screw sleeve to support the pressing head and prevent it from being pressed, which can effectively prevent the spring from being in a compressed state for a long time, so as to avoid the spring from fatigue deformation and aging too quickly. The anti-pressing solution of the double back-suction all-plastic lotion pump is basically the same as that of the traditional lotion pump, and both require an additional part, such as a buckle. However, after the buckle accidentally falls off or is discarded after use, the pressing head cannot be locked, and there are the following disadvantages:

[0004] 1. The pressing head is exposed at a high height due to the fixed height of the main column, which makes it easy to be squeezed by external forces during abnormal use. For example, the pressing head is squeezed by a low shelf that does not meet the placement specifications or is squeezed by a tilted shelf that hits the ground. In this case, the spring is always under pressure and is prone to fatigue and aging.

[0005] Second, after use, the pressing head is difficult to close again. Since the height of the main column is fixed, the pressing head is exposed at a high height, which makes it inconvenient to seal and store and carry. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problems of the prior art and provide a lock-type all-plastic lotion pump.

[0007] In order to achieve the above object, the present invention adopts the following scheme:

[0008] A locking head type all-plastic lotion pump, which is made of plastic and includes a pump body, a push head, a sub-column, a piston, a locking cover and screw threads; and further includes:

[0009] The main column assembly structure includes a main column and a guide column; the outer wall of the main column has an upper buckle groove, a guide groove and a lower buckle groove connected in sequence from top to bottom;

[0010] The guide post has a column cavity that penetrates through its upper and lower ends and allows the main post to move through it; on the inner wall of the guide post, there are clamping protrusions that can be adapted and clamped with the upper snap groove or the lower snap groove; the clamping protrusions can be inserted and connected into the guide chute, and can slide relatively on the guide chute so that the main post reciprocates up and down relative to the guide post; the guide post is fixed on the pump body through the lock cover; the upper end of the main post is connected to the push head, and its lower end is connected to the auxiliary post;

[0011] The elastic pad valve assembly is arranged in the pump body; the lower end of the pump body has an upper liquid passage; the upper end of the elastic pad valve assembly is connected to the auxiliary post, and its lower end abuts against the bottom end of the inner cavity of the pump body and can be used to open or seal the upper liquid passage.

[0012] Further, the guide chute is a spiral chute or a linear chute.

[0013] Further, the number of the clamping protrusions, the guide chute, the upper snap groove, and the lower snap groove are all the same; there are 2 clamping protrusions; the 2 clamping protrusions are relatively arranged on the upper end of the inner wall of the guide post.

[0014] Further, on the outer wall of the top end of the guide post, there is a slip groove that communicates with the upper snap groove and is used to facilitate the entry or exit of the clamping protrusion of the guide post into or out of the upper snap groove.

[0015] Further, the elastic pad valve assembly includes:

[0016] An elastic structure body, which has a hollow cavity; the elastic structure body is arranged in the pump body; the upper end of the elastic structure body is connected to the auxiliary post, and the lower end of the elastic structure body abuts against the bottom end of the inner cavity of the pump body;

[0017] A pad valve member, which is located inside the lower end of the elastic structure body and can reciprocate up and down relative to the pump body, and is used to open or seal the upper liquid passage of the all-plastic emulsion pump;

[0018] An elastic connecting part, the pad valve member and the lower end inside the elastic structure body are connected through the elastic connecting part;

[0019] The elastic structure body, the pad valve member, and the elastic connecting part are integrally injection-molded. Further, the elastic connecting part is a bent strip structure, and the number of the elastic connecting parts is 2; the elastic connecting part includes a first connecting section, a first turning section, a surrounding section, a second turning section, and a second connecting section.

[0020] The first connecting section is connected to the inner wall of the lower end of the elastic structure body; the second connecting section is connected to the pad valve member; the first connecting section, the first turning section, the surrounding section, the second turning section and the second connecting section are sequentially connected to form a whole;

[0021] The surrounding section extends around the pad valve member.

[0022] Further, the pad valve member is in a circular flat shape or a square flat shape.

[0023] Further, the elastic structure body includes a circular ring and an elastic helix;

[0024] At least two of the circular rings are arranged at intervals from top to bottom in correspondence; two adjacent circular rings are connected by one of the elastic helices;

[0025] The elastic helix is a hollow structure formed by helically cross-winding at least two elastic helical strips.

[0026] Further, the number of the elastic helices is 1, 2, 3 or 4;

[0027] At the position relative to the pad valve member, the outer diameter of the lowermost circular ring is larger than the outer diameters of other circular rings;

[0028] The outer side wall of the pad valve member is connected to the inner wall of the lowermost circular ring through the elastic connecting portion.

[0029] Further, the plastic is made of PP material.

[0030] Compared with the existing technology, the present invention has the following advantages:

[0031] 1. By combining the pump body, the pressing head, the auxiliary column, the piston, the locking cover, the screw thread, the main column assembly structure and the elastic pad valve assembly, the present invention mainly improves the main column assembly structure and the elastic pad valve assembly. An upper snap groove, a guiding sliding groove and a lower snap groove which are communicated with each other are arranged on the outer wall of the main column from top to bottom and cooperate with the snap protrusions on the guide column. The design of the main column assembly structure enables it to be conveniently extended and safely hidden after being assembled onto the pump body of the all-plastic emulsion pump with a self-locking function, so that the main column has a telescopic function on the all-plastic emulsion pump. Before specific operation, the all-plastic emulsion pump is in a locked state. On the one hand, the pressure on the elastic pad valve assembly can be reduced, preventing the structures such as the pressing head of the all-plastic emulsion pump from continuously pressing the elastic pad valve assembly, which is beneficial to improving the service life of the elastic pad valve assembly. On the other hand, after the all-plastic emulsion pump is used, the pressing head can still be adjusted and locked at any time during use to close the all-plastic emulsion pump, and the operation is simple and convenient. Therefore, the all-plastic emulsion pump has the characteristics of better sealed storage and convenient carrying. The design idea is novel, the practicability is strong, and it has a high market promotion value.

[0032] 2. The elastic pad valve assembly of the present invention replaces the spring and glass ball of the traditional all-plastic emulsion pump, effectively reducing the number of parts, simplifying the structure, making the structure stable and reliable, reducing the costs of mold development and assembly, and having good elastic functions, as well as the function of opening or sealing the liquid supply channel of the all-plastic emulsion pump, with remarkable technological innovation and practical value, and is conducive to being widely applied in the all-plastic emulsion pump with a self-locking function and other similar liquid dispensing devices.

[0033] 3. The lock-head type all-plastic emulsion pump of the present invention adopts an all-plastic design, has high strength, and a lightweight structure design, feels light in hand, is recyclable, is conducive to the overall recycling and reuse of the structure, and is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following further elaborates on the present application in conjunction with the drawings and specific embodiments.

[0035] Figure 1 is the exploded three-dimensional structural schematic diagram of the lock-head type all-plastic emulsion pump of the present invention.

[0036] Figure 2 is the semi-sectional structural schematic diagram of the lock-head type all-plastic emulsion pump of the present invention at an angle.

[0037] Figure 3 is the three-dimensional structural schematic diagram of the main column assembly structure of the present invention.

[0038] Figure 4 is the exploded three-dimensional structural schematic diagram of the main column assembly structure of the present invention.

[0039] Figure 5 is the semi-sectional structural schematic diagram of the main column assembly structure of the present invention at an angle.

[0040] Figure 6 is the three-dimensional structural schematic diagram of the main column of the present invention.

[0041] Figure 7 is the three-dimensional structural schematic diagram of the first embodiment of the elastic pad valve assembly of the present invention.

[0042] Figure 8 is Figure 7 the enlarged view of part A shown in the figure.

[0043] Figure 9 is the three-dimensional structural schematic diagram of the second embodiment of the elastic pad valve assembly of the present invention.

[0044] The figure includes:

[0045] Pump body 1, liquid supply channel 11, pressing head 2, secondary column 3, piston 4, locking cover 5, screw thread 6, main column assembly structure 7, main column 71, upper snap groove 711, guiding sliding groove 712, lower snap groove 713, slipping-off groove 714, guiding column 72, column cavity 721, clamping protrusion 73, arc surface 731, outer protrusion part 74, inner protrusion part 75, elastic gasket valve assembly 8, elastic structure body 81, circular ring 811, elastic spiral body 812, hollow cavity 813, gasket valve part 82, elastic connecting part 83, first connecting section 831, first turning section 832, surrounding section 833, second turning section 834, second connecting section 835. Specific implementation manners

[0046] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0047] As Figures 1 to 9As shown in the figure, a lock - type all - plastic emulsion pump, which is made of plastic, includes a pump body 1, a push head 2, a secondary column 3, a piston 4, a lock cover 5, a screw thread 6, a main column assembly structure 7 and an elastic gasket valve assembly 8. The pump body 1, as the main part of the entire all - plastic emulsion pump, is made of plastic material and has sufficient strength and toughness. A liquid supply channel 11 is provided at the lower end of the pump body 1 for the output of liquid products. The lock cover 5 and the screw thread 6 are used to fixedly connect the pump body 1 with other components to ensure the stability and sealing of the pump body 1. In addition, for the core part of the all - plastic emulsion pump, the main column assembly structure 7 includes a main column 71 and a guide column 72; the outer wall of the main column 71 has successively connected upper snap grooves 711, a guiding sliding groove 712 and lower snap grooves 713 from top to bottom; the guide column 72 has a column cavity 721 that penetrates through its upper and lower ends and allows the main column 71 to move through it; on the inner wall of the guide column 72, there are snap protrusions 73 that can be adapted and clamped with the upper snap grooves 711 or the lower snap grooves 713; the snap protrusions 73 can achieve the locking and release of the main column 71, thus facilitating the stable connection between the main column 71 and the guide column 72. The snap protrusions 73 can be inserted and connected in the guiding sliding groove 712, and the snap protrusions 73 can slide relatively on the guiding sliding groove 712 to enable the main column 71 to reciprocally move up and down in the vertical direction relative to the guide column 72; the guide column 72 is fixed on the pump body 1 through the lock cover 5; as one of the core components, the upper end of the main column 71 is connected to the push head 2, and its lower end is connected to the secondary column 3. The elastic gasket valve assembly 8 is arranged in the pump body 1; with such a design, during use, by pressing the push head 2, the main column 71, the secondary column 3, the piston 4 and the elastic gasket valve assembly 8 can be driven to move up and down in the pump body 1, thereby completing the extraction and output of the liquid. The lower end of the pump body 1 has a liquid supply channel 11; the upper end of the elastic gasket valve assembly 8 is connected to the secondary column 3, and its lower end abuts against the bottom end of the inner cavity of the pump body 1 and can be used to open or seal the liquid supply channel 11. The elastic gasket valve assembly 8 replaces the spring and glass ball of the traditional all - plastic emulsion pump, effectively reducing the number of parts, simplifying the structure, making the structure stable and reliable, reducing the cost of mold development and assembly, and having good elastic function, as well as the function of opening or sealing the liquid supply channel 11 of the all - plastic emulsion pump, with significant technological innovation and practical value, which is conducive to wide application in this self - locking all - plastic emulsion pump and other similar liquid dispensing devices. On the other hand, the piston 4 is sleeved on the secondary column 3 and is adapted to reciprocally move up and down along the inner wall of the pump body 1. In this way, the push head 2, the secondary column 3, the piston 4, the lock cover 5, the screw thread 6, the main column assembly structure 7 and the elastic gasket valve assembly 8 are assembled on the pump body 1 in an adapted manner to form this self - locking all - plastic emulsion pump.

[0048] The all-plastic emulsion pump with a self-locking function combines a pump body 1, a pressing head 2, a secondary column 3, a piston 4, a locking cover 5, a thread 6, a main column assembly structure 7, and an elastic gasket valve assembly 8. It mainly improves the main column assembly structure 7 and the elastic gasket valve assembly 8. On the outer wall of the main column 71, upper snap grooves 711, guiding sliding grooves 712, and lower snap grooves 713 that are interconnected are arranged from top to bottom, which cooperate with the snap protrusions 73 on the guiding column 72. When in use, the user operates to move the main column 71 upward, that is, move the main column 71 upward relative to the guiding column 72. The upper snap groove 711 first leaves the snap protrusion 73. At this time, the meshing movement between the guiding sliding groove 712 and the snap protrusion 73 is converted into a linear displacement, and the main column 71 moves upward relative to the guiding column 72. When the lower snap groove 713 is adaptively snapped with the snap protrusion 73 and is firmly snapped and closed with the guiding column 72, the main column 71 extends out of the guiding column 72, and the pressing head 2 can pump out the material under the up-and-down pressing of the user; when not in use, the user operates to move the main column 71 downward, that is, move the main column 71 downward relative to the guiding column 72. The lower snap groove 713 first leaves the snap protrusion 73. At this time, the meshing movement between the guiding sliding groove 712 and the snap protrusion 73 is converted into a linear displacement, and the main column 71 moves downward relative to the guiding column 72. When the upper snap groove 711 is adaptively snapped with the snap protrusion 73 and is firmly snapped and closed with the guiding column 72, the main column 71 shrinks and hides inside the guiding column 72. Due to the lack of the moving stroke of the main column 71, the all-plastic emulsion pump cannot be opened and pressed either. This design enables the convenient extension and safe hiding of the main column 71 after being assembled to the pump body 1 of the all-plastic emulsion pump, making the main column 71 have a telescopic function on the all-plastic emulsion pump. Before specific operation, the all-plastic emulsion pump is in a locked state. On the one hand, it can reduce the pressure on the elastic gasket valve assembly 8, prevent the structures such as the pressing head 2 of the all-plastic emulsion pump from long-term force pressing on the elastic gasket valve assembly 8, and is beneficial to improving the service life of the elastic gasket valve assembly 8. On the other hand, after the all-plastic emulsion pump is used, it can still adjust and lock the pressing head 2 at any time during the use process to close the all-plastic emulsion pump. The operation is simple and convenient, so that the all-plastic emulsion pump has better sealing and storage and is convenient to carry; it can also meet the normal use requirements, effectively improve the safety of the product, effectively prevent children from misusing it, improve good use safety for children, with novel design ideas, strong practicability, and high market promotion value.

[0049] In this embodiment, the guiding sliding groove 712 is a spiral sliding groove. Designing the guiding sliding groove 712 as a spiral sliding groove not only increases the movement path length of the snap protrusion 73 in the guiding sliding groove 712 to achieve a step-by-step adjustment effect, but also makes the main column 71 have better stability and guiding property when reciprocating up and down relative to the guiding column 72. Of course, in another embodiment, the guiding sliding groove 712 can also be a straight sliding groove arranged vertically, more directly adjusting the up or down movement of the straight sliding groove on the snap protrusion 73, facilitating the quick adjustment of the up and down movement of the main column 71 relative to the guiding column 72.

[0050] In this embodiment, the number of the card protrusions 73, the guiding sliding grooves 712, the upper snap grooves 711 and the lower snap grooves 713 are the same; preferably, there are 2 card protrusions 73. Correspondingly, the number of the corresponding guiding sliding grooves 712, the upper snap grooves 711 and the lower snap grooves 713 is also increased accordingly. Preferably, using 2 card protrusions 73 can effectively enhance the stability of the main column 71 moving upward or downward relative to the guiding column 72, and when being snapped into the upper snap groove 711 or the lower snap groove 713, the structure can be more stable and reliable, which is beneficial to the better use and closing of the all-plastic emulsion pump. Specifically, the 2 card protrusions 73 are relatively arranged on the upper end of the inner wall of the guiding column 72. Designing the position of the card protrusions 73 in this way can reasonably allocate the position space of the structure, and the design is simpler. Of course, the number and position of the card protrusions 73, the guiding sliding grooves 712, the upper snap grooves 711 and the lower snap grooves 713 can be designed according to requirements. For example, the number of the card protrusions 73 can also be 1, 3, etc.

[0051] In order to make the card protrusions 73 fit more closely to move in the guiding sliding grooves 712, an arc surface 731 that tightly fits the bottom of the guiding sliding grooves 712 is provided on the inner side of the card protrusions 73. By designing the inner side surface of the card protrusions 73 to be an arc-shaped surface, it is beneficial to more closely fit the bottom of the guiding sliding grooves 712, improve the tightness of the structure and the stability of movement.

[0052] In order to make the assembly, maintenance and replacement more convenient, a slipping-off groove 714 that is communicated with the upper snap groove 711 and is used for facilitating the card protrusions 73 to enter or exit the upper snap groove 711 is provided on the outer side wall of the top end of the guiding column 72. By providing the slipping-off groove 714, during assembly, the slipping-off groove 714 is aligned with the card protrusions 73, and then the main column 71 moves upward from the column cavity 721 at the lower end of the guiding column 72. The card protrusions 73 are embedded in the slipping-off groove 714, and continue to be pushed upward, and the card protrusions 73 enter the upper snap groove 711, so that the main column 71 is installed on the guiding column 72. During disassembly, similarly, the card protrusions 73 are slid from the upper snap groove 711 into the slipping-off groove 714, and then slid out of the slipping-off groove 714, and the main column 71 continues to move downward, separating the main column 71 and the guiding column 72. The disassembly and assembly are convenient, and it is also convenient for the assembly of the structure.

[0053] Preferably, a fillet is provided between the top surface and the side surface of the card protrusions 73, reducing the design of the acute angles and edges of the card protrusions 73, and its upper end is smooth, making it easier to enter the slipping-off groove 714.

[0054] In order to prevent the lower end of the main column 71 from moving out of position at the upper end of the column cavity 721 of the guide column 72 when the main column 71 directly passes upward through the lower end of the guide column 72, an outer convex portion 74 is provided on the outer wall of the lower end of the main column 71; an inner convex portion 75 which is annular and used to catch the outer convex portion 74 to limit the main column 71 from sliding out of the guide column 72 is provided on the inner wall of the upper end of the guide column 72. By providing the cooperation and limitation between the outer convex portion 74 and the inner convex portion 75, it can better prevent the lower end of the main column 71 from moving out of position at the upper end of the column cavity 721 of the guide column 72.

[0055] In this embodiment, on the basis of the above-mentioned all-plastic emulsion pump, for the elastic pad valve assembly 8, it is mainly applied to this all-plastic emulsion pump with a self-locking function and is mainly designed to be installed in the pump body 1 of the all-plastic emulsion pump, and can open or seal the liquid supply channel 11 of the pump body 1. The elastic pad valve assembly 8 includes an elastic structure body 81, a pad valve member 82 and an elastic connection portion 83. Among them, the elastic structure body 81 has a hollow cavity 813; the elastic structure body 81 is arranged in the pump body 1; on the one hand, the elastic structure body 81 can replace the spring and realize the function of the spring in the all-plastic emulsion pump. Its structural rigidity strength is better, the compressive performance is more stable, the anti-deformation ability is more stable, the structural flexibility is more stable, and the resilience performance is better, having a good elastic effect. When applied to the all-plastic emulsion pump, it can well realize the flexible and stable rebound of the emulsion. The upper end of the elastic structure body 81 is connected to the auxiliary column 3. Specifically, the lower end of the auxiliary column 3 has a column embedding portion, and the column embedding portion is embedded in the upper end of the elastic structure body 81 to enhance the connection stability between the auxiliary column 3 and the elastic structure body 81. The lower end of the elastic structure body 81 abuts against the bottom end of the inner cavity of the pump body 1; the pad valve member 82 is located inside the lower end of the elastic structure body 81 and can reciprocate in the up and down direction relative to the pump body 1, and is used to open or seal the liquid supply channel 11 of the all-plastic emulsion pump; the pad valve member 82 and the inner lower end of the elastic structure body 81 are connected through the elastic connection portion 83. The connection design of the pad valve member 82 and the elastic connection portion 83 realizes the stable up and down movement of the pad valve member 82, which not only simplifies the structure, but also improves the durability, reduces the noise and wear generated by the friction between parts, such as the rolling wear and collision noise of the glass ball, and is beneficial to improving the working efficiency and user experience of the all-plastic emulsion pump.

[0056] The elastic cushion valve assembly 8 is combined by setting an elastic structure body 81, a cushion valve part 82 and an elastic connection part 83, and is applied and installed on a fully plastic emulsion pump. The elastic structure body 81 is used to realize the function of the spring in the fully plastic emulsion pump, and the cushion valve part 82 and the elastic connection part 83 are used to realize the function of the glass ball in the fully plastic emulsion pump. When pressed under force, such as when the user presses the head 2 of the fully plastic emulsion pump, the cushion valve part 82 moves downward in the up and down direction relative to the elastic structure body 81 under the elastic action of the elastic connection part 83. The precise fit of the cushion valve part 82 and the elastic connection part 83 seals and closes the liquid supply channel 11 of the fully plastic emulsion pump. When the user releases the head 2 of the fully plastic emulsion pump, the elastic connection part 83 elastically resets, and the cushion valve part 82 moves upward in the up and down direction relative to the elastic structure body 81, opening the liquid supply channel 11 of the fully plastic emulsion pump. By repeatedly pressing and releasing, the liquid discharge of the material can be realized. With such a design, the elastic structure body 81, the cushion valve part 82 and the elastic connection part 83 are integrated into one body, replacing the spring and glass ball of the traditional fully plastic emulsion pump, effectively reducing the number of parts, simplifying the structure, making the structure stable and reliable, reducing the cost of mold development and assembly, and having good elastic function, as well as the function of opening or sealing and closing the liquid supply channel 11 of the fully plastic emulsion pump, with remarkable technical innovation and practical value, and is conducive to being widely applied in fully plastic emulsion pumps and other similar liquid dispensing devices.

[0057] Preferably, the elastic structure body 81, the cushion valve part 82 and the elastic connection part 83 are integrally injection-molded. Integrally injection-molding the elastic structure body 81, the cushion valve part 82 and the elastic connection part 83 can be made of elastic plastic, replacing the existing metal spring and glass ball structure, becoming a new type of fully plastic built-in elastic cushion valve assembly 8. With the design of lightweight structure, it has a light feel, can be repeatedly pressed and rebounded, is recyclable, environmentally friendly and low-cost, and has a stable and reliable structure, effectively reducing the number of parts and the cost of mold development and assembly. The elastic connection part 83 can make the cushion valve part 82 move more smoothly during up and down movement, reducing the noise and wear caused by friction between parts, and is conducive to improving the working efficiency and user experience of the fully plastic emulsion pump.

[0058] In order to better achieve the rapid movement of the pad valve member 82 to open or seal and close the liquid inlet channel 11 of the all-plastic emulsion pump, the bottom surface of the pad valve member 82 is slightly higher than or level with the bottom end surface of the elastic structure body 81. With such a design, the position of the bottom surface of the pad valve member 82 enables the distance between the pad valve member 82 and the liquid inlet channel 11 of the all-plastic emulsion pump to be small during the process of the user repeatedly pressing and releasing the push head 2, and the pad valve member 82 can rapidly move to open or seal and close the liquid inlet channel 11 of the all-plastic emulsion pump. Additionally, the bottom end surface of the pump body 1 corresponding to its inner cavity is designed as a flat surface; in this way, it can better fit with the bottom end surface of the elastic pad valve assembly 8, the structure is more stable and reliable, the elastic function of the structure is better, and the rapid movement to open or seal and close the liquid inlet channel 11 is more closely fitted, resulting in better sealing performance.

[0059] In this embodiment, regarding the shape of the pad valve member 82, the pad valve member 82 is in a circular flat shape or a square flat shape. Preferably, the pad valve member 82 is in a circular flat shape, with a simple structure, convenient design, and a small thickness. During the process of being stressed and released, the structure responds sensitively, and it can rapidly move to open or seal and close the liquid inlet channel 11 of the all-plastic emulsion pump, achieving the same liquid discharging function as the existing all-plastic emulsion pump. Of course, the shape of the pad valve member 82 is not limited to this, and it can also be other regular shapes, such as a cylindrical shape or a frustum shape, or an irregular shape, as long as it can rapidly move to open or seal and close the liquid inlet channel 11 of the all-plastic emulsion pump.

[0060] In this embodiment, for the elastic connecting portion 83, the elastic connecting portion 83 is a bent strip structure, and the number of the elastic connecting portions 83 is two; the two elastic connecting portions 83 can be symmetrically arranged relative to the valve gasket, or evenly distributed in the space between the valve gasket and the lower end of the elastic structure body 81. Specifically, the elastic connecting portion 83 includes a first connecting section 831, a first turning section 832, a surrounding section 833, a second turning section 834, and a second connecting section 835; the first connecting section 831 is connected to the inner wall of the lower end of the elastic structure body 81; the second connecting section 835 is connected to the valve gasket 82; the first connecting section 831, the first turning section 832, the surrounding section 833, the second turning section 834, and the second connecting section 835 are connected in sequence to form an integral body; the surrounding section 833 extends around the valve gasket 82. For the surrounding section 833, the surrounding section 833 can be an arc section or other curved sections. By setting the first connecting section 831, the first turning section 832, the surrounding section 833, the second turning section 834, and the second connecting section 835 to form the elastic connecting portion 83 in a strip structure, and the surrounding section 833 is designed to extend around the valve gasket 82. On the one hand, the elastic connecting portion 83 can be accommodated in the space between the valve gasket 82 and the lower end of the elastic structure body 81. On the other hand, during the process of both the valve gasket 82 and the elastic connecting portion 83 being stressed and releasing the force, the structure responds sensitively, and the entire elastic connecting portion 83, especially the surrounding section 833, will deform, causing the valve gasket to reciprocate in the up and down direction relative to the elastic structure body 81, thereby quickly moving to open or seal the liquid inlet channel 11 of the all-plastic emulsion pump. In other embodiments, the elastic connecting portion 83 is also a bent strip structure, and the number of the elastic connecting portions 83 is three or four. Even more elastic connecting portions 83 can be reasonably designed according to requirements. Of course, the shape of the elastic connecting portion 83 is not limited to this, and it can also be other shapes that meet the requirements, especially those that can achieve moving to open or seal the liquid inlet channel 11 of the all-plastic emulsion pump.

[0061] Based on the above-mentioned gasket valve member 82 and elastic connection portion 83, for the elastic structure body 81, the elastic structure body 81 includes a circular ring 811 and an elastic spiral body 812; at least two of the circular rings 811 are arranged at intervals corresponding to each other from top to bottom; two adjacent circular rings 811 are connected by one elastic spiral body 812; the elastic spiral body 812 is a hollow structure formed by at least two elastic spiral strips spirally and cross-wound. Among them, the elastic spiral body 812 may specifically include a first elastic spiral strip and a second elastic spiral strip. The first elastic spiral strip and the second elastic spiral strip are the elastic spiral strips. Between two adjacent circular rings 811 up and down, the lower ends of several first elastic spiral strips are uniformly arranged on the lower circular ring 811 around the central axis of the circular ring 811; the upper ends of several first elastic spiral strips all extend spirally upward to the upper circular ring 811 and are connected to the upper circular ring 811; the second elastic spiral strip spirally intersects the first elastic spiral strip in the opposite direction from the lower end to the upper end of the first elastic spiral strip on each first elastic spiral strip; several second elastic spiral strips are uniformly arranged between two adjacent circular rings 811 around the central axis of the circular ring 811. The elastic structure body 81 forms the elastic spiral body 812 by intersecting several first elastic spiral strips and several second elastic spiral strips in opposite spiral ways, connects between two adjacent circular rings 811, then at least 2 circular rings 811 are arranged at intervals corresponding to each other from top to bottom, and are combined with at least 1 elastic spiral body 812 to form a mesh hollow tubular structure with mesh holes, thereby strengthening the compressive yield stability of the elastic structure body with good elastic effect, having better elastic performance, similarly, having better structural rigidity strength, more stable compressive performance, more stable anti-deformation ability, more stable structural flexibility, better resilience performance, having a good elastic effect, and when applied to a fully plastic emulsion pump, it can well realize the flexible and stable rebound of the emulsion. Regarding the position of the valve gasket member, the outer side wall of the gasket valve member 82 is connected to the inner wall of the lowermost circular ring 811 through the elastic connection portion 83.

[0062] Preferably, the number of the first elastic helical strips is the same as that of the second elastic helical strips. For example, both the number of the first elastic helical strips and that of the second elastic helical strips are 3. The plane formed by unfolding the elastic helix 812 along its height is a diamond-shaped hole mesh with several diamond-shaped holes. The diamond-shaped hole mesh encloses the elastic helix 812 and combines with two adjacent rings 811 to form a mesh hollow tubular structure with diamond-shaped mesh holes. By reasonably setting the number of the first elastic helical strips and the second elastic helical strips, such a design endows the elastic helix 812 with good elastic performance, good structural rigidity strength, stable compressive performance, and stable anti-deformation ability. At the same time, it is beneficial to reduce costs. Of course, the number of the first elastic helical strips and the second elastic helical strips is not limited to this, and can also be reasonably designed according to requirements. In other aspects, the positions of the elastic helical strips relative to each other, the forward helical design or the reverse helical design can all be reasonably designed according to requirements, and are not limited to the elastic structure body 81 of the present application.

[0063] Regarding the number of the elastic helices 812, among them, the number of the elastic helices 812 is 1, 2, 3, or 4. When the number of the elastic helices 812 is 1, there are 2 corresponding rings 811. As the first embodiment of the elastic pad valve assembly 8, as Figures 7 to 8 shown, the height of the elastic structure body 81 is 60 - 61 mm, preferably 60.5 mm. Similarly, when the number of the elastic helices 812 is 2, there are 3 corresponding rings 811. As the second embodiment of the elastic pad valve assembly 8, as Figure 9 shown, the height of the elastic structure body 81 is 65 - 68 mm, preferably 66 mm. The drawings of the elastic pad valve assemblies 8 corresponding to other numbers of the elastic helices 812 are not shown. Of course, the number of the elastic helices 812 is not limited to this and can be reasonably designed according to requirements.

[0064] Preferably, at the position relative to the pad valve member 82, the outer diameter of the lowermost ring 811 is greater than that of the other rings 811. By designing the rings 811 in this way, after the elastic pad valve assembly 8 is applied and installed on the all-plastic emulsion pump, stable support is provided, providing a stable basis for the performance of the elastic structure body 81 itself, the pad valve member 82, and the elastic connection portion 83.

[0065] In this embodiment, the all-plastic emulsion pump with a self-locking function is made of plastic. Preferably, the plastic is PP material. The all-plastic emulsion pump with a self-locking function adopts an all-plastic design, with high strength, and a lightweight structure design, light in hand feeling, recyclable, which is conducive to the overall recycling and reuse of the structure and is environmentally friendly. Of course, the material used for the all-plastic emulsion pump with a self-locking function is not limited to this, and other materials can also be used, such as PE material.

[0066] The working process of the principle of the present invention is as follows:

[0067] During use, when the user needs to pump out the all-plastic emulsion pump, the user operates to move the main column 71 upward, that is, move the main column 71 upward relative to the guide column 72. The upper buckle groove 711 first leaves the buckle protrusion 73. At this time, the meshing movement between the guide chute 712 and the buckle protrusion 73 is converted into a linear displacement, and the main column 71 moves upward relative to the guide column 72. When the lower buckle groove 713 is adapted to buckle with the buckle protrusion 73 and is firmly buckled and closed with the guide column 72, the main column 71 extends out of the guide column 72. That is, the buckle protrusion 73 moves downward relative to the main column 71, successively passes through the upper buckle groove 711, the guide chute 712, and the lower buckle groove 713, and is adapted to buckle and fix with the lower buckle groove 713. The main column 71 is lifted and extended out of the guide column 72. At this time, the pressing head 2 can be pressed up and down. When pressing the pressing head 2, under the action of force, the elastic pad valve assembly 8, the main column 71, the auxiliary column 3, and the piston 4 move downward with the pressing head 2. The elastic structure body 81 is compressed by force, and the pad valve member 82 and the elastic connecting portion 83 are also subjected to downward pressure. At this time, under the elastic action of the elastic connecting portion 83, the pad valve member 82 moves downward in the up and down direction relative to the pump body 1. The precise cooperation between the pad valve member 82 and the elastic connecting portion 83 seals and closes the liquid inlet channel 11 of the all-plastic emulsion pump. When the user releases the pressing head 2 of the all-plastic emulsion pump, the elastic connecting portion 83 elastically resets, and the pad valve member 82 moves upward in the up and down direction relative to the elastic structure body 81, opening the liquid inlet channel 11 of the all-plastic emulsion pump. At the same time, the elastic structure body 81 also elastically resets, and the pressing head 2, the main column 71, the auxiliary column 3, and the piston 4 also move upward successively. By repeatedly pressing and releasing the operation, the pump discharges the material, and the liquid discharge of the material can be realized.

[0068] When not in use, that is, when the all-plastic emulsion pump with a self-locking function needs to be closed, the user operates to move the main column 71 downward, that is, move the main column 71 downward relative to the guide column 72. The lower buckle groove 713 first leaves the buckle protrusion 73. At this time, the meshing movement between the guide chute 712 and the buckle protrusion 73 is converted into a linear displacement, and the main column 71 moves downward relative to the guide column 72. When the upper buckle groove 711 is adapted to buckle with the buckle protrusion 73 and is firmly buckled and closed with the guide column 72, the main column 71 shrinks and hides inside the guide column 72. That is, the buckle protrusion 73 moves upward relative to the main column 71, successively passes through the lower buckle groove 713, the guide chute 712, and the upper buckle groove 711, and is adapted to buckle and fix with the upper buckle groove 711. The main column 71 shrinks and hides inside the guide column 72, forming a stable locking structure. Due to the lack of the moving stroke of the main column 71, the pressing head 2 cannot be pressed, and thus the all-plastic emulsion pump cannot be opened and pressed, and is in a closed state.

[0069] In summary, the embodiment of the present invention provides a lock-head type all-plastic emulsion pump. Among them, the all-plastic emulsion pump with a self-locking function has the following advantages:

[0070] 1. By combining the pump body 1, the pressing head 2, the auxiliary column 3, the piston 4, the locking cover 5, the screw thread 6, the main column assembly structure 7 and the elastic gasket valve assembly 8, the main column assembly structure 7 and the elastic gasket valve assembly 8 are mainly improved. The upper snap groove 711, the guiding sliding groove 712 and the lower snap groove 713 which are communicated with each other are arranged on the outer wall of the main column 71 from top to bottom and cooperate with the snap protrusion 73 on the guide post 72. The design of the main column assembly structure 7 enables it to achieve the convenient extension and safe hiding of the main column 71 after being assembled on the pump body 1 of the all-plastic emulsion pump with self-locking function, so that the main column 71 has the telescopic function on the all-plastic emulsion pump. Before specific operation, the all-plastic emulsion pump is in a locked state. On the one hand, the pressure on the elastic gasket valve assembly 8 can be reduced, preventing the structures such as the pressing head 2 of the all-plastic emulsion pump from continuously pressing the elastic gasket valve assembly 8 for a long time, which is beneficial to improving the service life of the elastic gasket valve assembly 8. On the other hand, after the all-plastic emulsion pump is used, the pressing head 2 can still be adjusted and locked at any time during use to close the all-plastic emulsion pump. The operation is simple and convenient, so that the all-plastic emulsion pump has the characteristics of better sealed storage and easy carrying. The design concept is novel, the practicability is strong, and it has high market promotion value.

[0071] 2. The elastic gasket valve assembly 8 replaces the spring and glass ball of the traditional all-plastic emulsion pump, effectively reducing the number of parts, simplifying the structure, making the structure stable and reliable, reducing the cost of mold development and assembly, and having good elastic function, as well as the function of opening or sealing the liquid supply channel 11 of the all-plastic emulsion pump. It has significant technical innovation and practical value, and is conducive to being widely applied in the all-plastic emulsion pump with self-locking function and other similar liquid distribution devices.

[0072] 3. The lock-head type all-plastic emulsion pump adopts an all-plastic design, has high strength, and a lightweight structure design, with a light feel, is recyclable, which is beneficial to the overall recycling and reuse of the structure, and is environmentally friendly.

[0073] 4. The elastic structure body 81, the gasket valve part 82 and the elastic connecting part 83 are integrally injection-molded to form the elastic gasket valve assembly 8, which can be made of elastic plastic, can replace the existing metal spring and glass ball structure, and become a new all-plastic built-in elastic gasket valve assembly 8. The lightweight structure design has a light feel, can be repeatedly pressed and rebound, is recyclable, environmentally friendly, low-cost, and the structure is stable and reliable. The number of parts is effectively reduced, and the assembly cost is reduced. The elastic connecting part 83 can make the gasket valve part 82 move more smoothly up and down, reducing the noise and wear caused by friction between parts, which is beneficial to improving the working efficiency and user experience of the all-plastic emulsion pump.

[0074] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. A lock-head all-plastic emulsion pump, which is made of plastic and includes a pump body, a pressing head, a secondary column, a piston, a lock cover and a thread; characterized in that, Further included are: A main column assembly structure, which includes a main column and a guide column; the outer wall of the main column has, from top to bottom, an upper snap groove, a guiding sliding groove, and a lower snap groove that are sequentially connected and communicated; The guide column has a column cavity that penetrates through its upper and lower ends and through which the main column can move; on the inner wall of the guide column, there are snap protrusions that can be adapted and clamped with the upper snap groove or the lower snap groove; the snap protrusions can be inserted and connected in the guiding sliding groove, and can relatively slide on the guiding sliding groove so that the main column reciprocates up and down relative to the guide column; The guide column is fixed to the pump body through the lock cover; the upper end of the main column is connected to the push head, and its lower end is connected to the auxiliary column; An elastic pad valve assembly, which is arranged in the pump body; the lower end of the pump body has an upper liquid passage; the upper end of the elastic pad valve assembly is connected to the auxiliary column, and its lower end abuts against the bottom end of the inner cavity of the pump body and can be used to open or seal the upper liquid passage.

2. The lock-type all-plastic emulsion pump according to claim 1, wherein, The guiding sliding groove is a spiral sliding groove or a linear sliding groove.

3. The lock-type all-plastic emulsion pump according to claim 1 or 2, characterized in that, The numbers of the snap protrusions, the guiding sliding groove, the upper snap groove, and the lower snap groove are all the same; there are 2 snap protrusions; the 2 snap protrusions are relatively arranged on the upper end of the inner wall of the guide column.

4. The lock-type all-plastic emulsion pump according to claim 1 or 2, characterized in that On the outer side wall at the top end of the guide column, there is a slipping groove that is connected to the upper snap groove and is used to facilitate the entry or exit of the snap protrusion of the guide column into or out of the upper snap groove.

5. The lock-type all-plastic emulsion pump according to claim 1 or 2, characterized in that, The elastic pad valve assembly includes: An elastic structure body, which has a hollow cavity; the elastic structure body is arranged in the pump body; the upper end of the elastic structure body is connected to the auxiliary column, and the lower end of the elastic structure body abuts against the bottom end of the inner cavity of the pump body; A pad valve member, which is located inside the lower end of the elastic structure body and can reciprocate in the up and down direction relative to the pump body, and is used to open or seal the upper liquid passage of the all-plastic emulsion pump; An elastic connecting part, through which the pad valve member is connected to the inside of the lower end of the elastic structure body; The elastic structure body, the pad valve member, and the elastic connecting part are integrally injection-molded.

6. The lock-type all-plastic emulsion pump according to claim 5, characterized in that, The elastic connecting part is a bent strip structure, and the number of the elastic connecting parts is 2; the elastic connecting part includes a first connecting section, a first turning section, a surrounding section, a second turning section, and a second connecting section; The first connecting section is connected to the inner wall of the lower end of the elastic structure body; the second connecting section is connected to the pad valve member; the first connecting section, the first turning section, the surrounding section, the second turning section, and the second connecting section are sequentially connected to form a whole; The surrounding section extends around the pad valve member.

7. The lock-type all-plastic emulsion pump according to claim 5, characterized in that, The pad valve member is in a circular flat shape or a square flat shape.

8. The lock-type all-plastic emulsion pump according to claim 5, characterized in that, The elastic structure body includes a circular ring and an elastic helix; At least two of the circular rings are correspondingly arranged at intervals from top to bottom; adjacent two circular rings are connected by one elastic helix; The elastic helix is a hollow structure formed by at least two elastic spiral strips spirally and cross-wound; 9. The lock-type all-plastic emulsion pump according to claim 8, wherein, The number of the elastic helices is 1, 2, 3, or 4; At the position relative to the pad valve member, the outer diameter of the lowermost circular ring is larger than the outer diameters of other circular rings; The outer sidewall of the cushion valve member is connected to the inner wall of the lowermost ring through the elastic connecting portion.

10. The lock-type all-plastic emulsion pump according to claim 1, characterized in that, The plastic is made of PP material.

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