Down-screw lock type all-plastic emulsion pump

Abstract

This invention relates to the field of all-plastic emulsion pump technology, specifically a downward-swivel locking type all-plastic emulsion pump. The pump includes a body, a pressing unit, and a nozzle. A lifting rail is provided on the inner wall of the body. The main column component of the pressing unit has a rotary drive unit at its lower end. The rotating seat component of the pressing unit has a coupling hole in its middle that is rotatably coupled to the rotary drive unit and vertically movable, and a locking protrusion on its outer side corresponding to the lifting rail. An elastic element acts on the rotating seat component and the main column component. An adjustment space is designed in the lower part of the main chamber. When the main column component rotates, driving the rotating seat component to rotate, the locking protrusion moves between the upper and lower ends of the lifting rail, switching the open and locked states of the pressing unit. This patented emulsion pump allows the pressing unit to be adjusted vertically relative to the body, switching between the open and locked states without the need for additional locking components. It features a compact structure, convenient and quick assembly, and good aesthetics.

Description

Technical Field

[0001] This invention relates to the field of all-plastic emulsion pump technology, and in particular to a bottom-screw lock type all-plastic emulsion pump. Background Technology

[0002] All-plastic emulsion pumps are designed to reduce recycling costs and meet environmental protection requirements. All parts of the emulsion pump are made of plastic. After the emulsion pump is installed in the container filled with emulsion, appropriate protective measures are required to prevent the emulsion from being pumped out if the pump is pressed before the user uses it.

[0003] For traditional non-all-plastic emulsion pumps, the push button return spring uses a metal elastic design. A threaded structure can be designed to rotate and lock the push button inside the body, thus preventing it from being pressed before use. At this time, the metal elastic is compressed. Because the metal elastic has good elastic properties, high fatigue strength, and long lifespan when compressed, this push button locking solution can meet the requirements.

[0004] However, for all-plastic emulsion pumps, the push-button return spring is a plastic spring with low fatigue strength, which will fail under prolonged compression. Therefore, existing all-plastic emulsion pumps on the market usually use a retainer between the push-button and the locking cap to hold the push-button in place and prevent it from being pressed. Current anti-pressing solutions require an additional component, the push-button cannot retract into the pump body, thus occupying height space and increasing packaging and transportation costs; the retainer is at risk of falling off, causing the anti-pressing protection to fail; and the retainer affects the product's aesthetics. Summary of the Invention

[0005] One objective of this invention is to address the problem that existing all-plastic emulsion pumps require an additional component to hold the nozzle in place for anti-pressing protection, which takes up a lot of space, poses a risk of the component falling off, and affects aesthetics. This problem is solved by designing a pressing unit that can be adjusted up and down relative to the main chamber of the main body to switch between open and locked states. In the locked state, the pressing unit moves to the lower part of the main chamber and is locked, preventing the main column component from pressing it.

[0006] The solution adopted in this patent is as follows:

[0007] A bottom-mounted, lock-type all-plastic emulsion pump includes a body, a pressing unit, and a nozzle. The body has a vertically extending main chamber with an opening at the upper end and a suction channel at the lower end. The inner wall of the body is provided with several vertically extending lifting rails. The pressing unit includes: a main column component with a nozzle connection at the upper end and a rotary drive component at the lower end, and a vertical main column channel connecting the rotary drive component and the nozzle connection component inside; and a rotating seat component with a coupling hole in the middle that is rotatably coupled to the rotary drive component and vertically movable, and a corresponding lifting rail on the outer side. The mechanism includes: a locking protrusion; an elastic element acting on the rotating seat component and the main column component to generate an upward elastic force on the main column component relative to the rotating seat component; a piston valve component connected to the lower end of the main column component and located on the lower side of the rotating seat component; a push-button connection; a pressing unit assembled into the main chamber; the locking protrusion of the rotating seat component assembled into the corresponding lifting rail; and an adjustment space designed in the lower part of the main chamber, so that when the main column component rotates and drives the rotating seat component to rotate, the locking protrusion moves between the upper and lower ends of the lifting rail, switching the open and locked states of the pressing unit.

[0008] This patented emulsion pump features a rotating seat component with a locking protrusion that engages with the lifting rail of the main body. Rotation of the nozzle drives the rotation of the main column component, causing the locking protrusion to move along the lifting rail, thus moving the entire pressing unit downwards to a locked state, restricting the downward pressing of the nozzle. Rotation of the nozzle drives the rotation of the main column component, causing the locking protrusion to move upwards along the lifting rail, thus moving the entire pressing unit upwards to an open state, allowing the nozzle to press downwards. This patented design incorporates an adjustment mechanism between the pressing unit and the main body. When pressing is restricted, the pressing unit can move downwards and retract into the main body, eliminating the need for additional locking components. This results in a compact structure, convenient and quick assembly, and a pleasing appearance. The coupling hole of the rotating drive unit uses a rotary coupling and vertically movable engagement, transmitting the rotational force of the nozzle to drive the rotating seat component to move up and down relative to the main body. This design is simple in structure and highly reliable.

[0009] Furthermore, the upper lower wall of the lifting rail is provided with an upper positioning part for locking the latch, and the upper positioning part has a horizontal force-bearing part. The configuration of the upper positioning part can limit the latch to the highest position of the lifting rail, lock the open state of the pressing unit, and prevent the rotating seat component from loosening and moving downward relative to the lifting rail when the emulsion pump is in use.

[0010] Furthermore, the rotating seat component has a seat cavity with an upper opening, and the coupling hole is provided in the middle of the bottom wall of the seat cavity. The main column component includes a column core and a guide sleeve located on the outer side of the upper part of the column core. The main column channel is provided inside the column core. The guide sleeve and the upper part of the column core are connected to form an upper limit part. An annular space with a lower opening is formed between the guide sleeve and the column core. An elastic element is sleeved on the outer side of the column core and acts between the bottom wall of the seat cavity and the upper limit part. The outer side of the guide sleeve is adapted to the inner wall of the seat cavity and can slide vertically relative to it. With the above structure configured, the configuration of the guide sleeve and the seat cavity can limit the radial position of the main column component, so that the main column component can move smoothly and stably up and down during use, with high reliability.

[0011] Furthermore, at least one pair of planes is provided between the rotary drive unit and the coupling hole to restrict their relative rotation. Specifically, the rotary drive unit and the coupling hole are polygonal, double-sided flat, or single-sided flat structures.

[0012] Furthermore, a return air hole is provided at the lower part of the main chamber. When the pressure tapping unit is in the open state and the main column component is in the reset state, the piston valve component blocks the inside of the return air hole.

[0013] By adopting the above solution, it is possible to prevent the emulsion from flowing out of the return air hole during the pumping process.

[0014] Furthermore, it also includes a locking cover, which is connected to the upper end of the body and is used to limit the rotation seat component from disengaging from the body.

[0015] Furthermore, the upper end of the main body is provided with a locking cover connecting part. The locking cover includes a limiting sleeve inserted into the upper end of the main chamber and a connecting ring formed on the outside of the limiting sleeve. An annular connecting part is formed between the connecting ring and the limiting sleeve and is connected to the locking cover connecting part.

[0016] Furthermore, when the pressing unit is in the locked state, the lower end of the pressing nozzle abuts against or is adjacent to the upper end of the locking cover. This design effectively prevents the pressing nozzle from being pressed down, providing a double locking function. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the emulsion pumping unit of this patent in the open state.

[0018] Figure 2 This is a cross-sectional view of the emulsion pump pressing unit of this patent in the open state.

[0019] Figure 3 This is a three-dimensional schematic diagram of the emulsion pumping unit of this patent in the locked state.

[0020] Figure 4 This is a cross-sectional view of the emulsion pump pressing unit of this patent in the locked state.

[0021] Figure 5 This is a three-dimensional schematic diagram of the pressing unit of this patent.

[0022] Figure 6 This is a cross-sectional view of the pressing unit of this patent.

[0023] Figure 7 This is an exploded view of the pressing unit of this patent.

[0024] Figure 8 This is an exploded cross-sectional view of the pressing unit of this patent.

[0025] Figure 9 yes Figure 5 AA-direction sectional view

[0026] Figure 10 This is a three-dimensional schematic diagram of the main body of this patent.

[0027] Figure 11 This is a cross-sectional view of the main body of this patent.

[0028] Figure 12 This is a three-dimensional schematic diagram of the rotating seat component of this patent.

[0029] Figure 13 This is a cross-sectional view of the rotating seat component of this patent.

[0030] Figure 14 This is a top view of the rotating seat component of this patent. Detailed Implementation

[0031] The technical solution of the present invention will be described below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 14 A rotary lock-type all-plastic emulsion pump includes a body 1, a pressing unit a, and a nozzle 5'. The body 1 has a vertically extending main chamber 100, with an opening at the upper end and a suction channel 10 at the lower end. The inner wall of the body 1 is provided with several vertically extending lifting rails s1. The pressing unit a has: a main column component 2, with a nozzle connecting part 2.1 at the upper end and a rotary drive part 2.2 at the lower end, and a vertical main column channel 200 connecting the rotary drive part 2.2 and the nozzle connecting part 2.1 inside; a rotating seat component 3 has a coupling hole 30 in the middle that is rotatably coupled to the rotary drive part 2.2 and vertically movable, and a locking protrusion s' on the outer side that corresponds to the lifting rails s1. 2; The elastic element 4 acts on the rotating seat component 3 and the main column component 2, generating an upward elastic force that causes the main column component 2 to move relative to the rotating seat component 3; the piston valve component 5 is connected to the lower end of the main column component 2 and located on the lower side of the rotating seat component 3; the push nozzle 5' is connected to the push nozzle connection part 2.1; the upper end of the body 1 is provided with a mounting connection cover 7; the pressing unit a is assembled into the main chamber 100, the locking protrusion s2 of the rotating seat component 3 is assembled into the corresponding lifting rail s1, and the lower part of the main chamber 100 is designed with an adjustment space h, so that when the main column component 2 rotates and drives the rotating seat component 3 to rotate, the locking protrusion s2 moves between the upper end and the lower end of the lifting rail s1, thereby switching the open state and the locked state of the pressing unit a.

[0033] In this patented emulsion pump, the locking protrusion s2 of the rotating seat component 3 and the lifting rail s1 of the main body 1 cooperate. By rotating the nozzle 5', the main column component 2 is rotated, causing the locking protrusion s2 to move along the lifting rail s1, so that the pressing unit a as a whole moves downward. The bottom of the main chamber 100 is locked, restricting the nozzle 5' from pressing downward. By rotating the nozzle 5', the main column component 2 is rotated, causing the locking protrusion s2 to move upward along the lifting rail s1, so that the pressing unit a as a whole moves upward to the open state, when the nozzle 5' can be pressed downward. The solution of this patent is to set an adjustment mechanism between the pressing unit a and the body 1. When pressing, the pressing unit a can move downward and retract into the body 1 as a whole, without the need for additional clips. The structure is compact, easy and quick to assemble, and aesthetically pleasing. The coupling hole 30 of the rotary drive part 2.2 adopts rotary coupling and vertical movable cooperation, which can transmit the rotational force of the nozzle 5' to drive the rotary seat component 3 to move up and down relative to the body 1. The structure is simple and highly reliable. Only one rotary seat component 3 is configured. By improving the connection between the rotary seat component 3 and the inner wall of the body 1, and restricting the rotation direction between the main column component 2 and the rotary seat component 3, the axially movable cooperation structure is compact, easy to install, and convenient to operate.

[0034] See Figure 10 and Figure 11 The upper lower wall of the lifting rail s1 is provided with an upper positioning part s11 for locking the protrusion s2. The upper positioning part s11 has a horizontal force-bearing part s111. The upper positioning part s11 can limit the protrusion s2 to the highest position of the lifting rail s1, lock the open state of the pressing unit a, and prevent the rotating seat component 3 from loosening and moving downward relative to the lifting rail s1 when the emulsion pump is in use.

[0035] See Figures 12 to 14 The rotating seat component 3 has a seat cavity 300 with an upper opening. A coupling hole 30 is provided in the middle of the bottom wall 301 of the seat cavity. The main column component 2 includes a column core 201 and a guide sleeve 202 located on the upper outer side of the column core 201. The main column channel 200 is provided inside the column core 201. The guide sleeve 202 and the upper part of the column core 201 are connected to form an upper limit part 203. An annular space 20 with a lower opening is formed between the guide sleeve 202 and the column core 201. An elastic element 4 is sleeved on the outer side of the column core 201 and acts between the bottom wall 301 of the seat cavity and the upper limit part 203. The outer side of the guide sleeve 202 is adapted to the inner wall of the seat cavity 300 and can slide vertically relative to it. With the above structure, the configuration of the guide sleeve 202 and the seat cavity 300 can limit the radial position of the main column component 2, making the main column component 2 move smoothly and stably up and down during use, with high reliability.

[0036] See Figures 7 to 14 At least one pair of planes restricting the relative rotation of the rotary drive unit 2.2 and the coupling hole 30 are provided between them. Specifically, the rotary drive unit 2.2 and the coupling hole are polygonal, double-sided flat, or single-sided flat structures.

[0037] In one embodiment, the rotary drive unit 2.2 and the coupling hole 30 are regular polygons, which makes the processing and assembly convenient and quick.

[0038] See Figures 10 to 14 In one embodiment, the locking protrusion s2 and the lifting rail s1 are provided in more than two pairs. The scheme shown in the figure is four pairs, preferably three or four pairs. Too few pairs will affect the stability of the fit between the rotating seat component 3 and the main chamber 100, while too many pairs will result in high processing costs.

[0039] See Figure 2 and Figure 4 A vent 100' is provided at the lower part of the main chamber 100. When the pressing unit a is in the open state and the main column component 2 is in the reset state, the piston valve component 5 blocks the inside of the vent 100'. By adopting the above scheme, it is possible to prevent the emulsion from flowing out of the vent 100' during the pumping process.

[0040] See Figures 1 to 4 In one embodiment, a locking cover 6 is further included, which is connected to the upper end of the body 1 and is used to limit the rotation seat component 3 from disengaging from the body 1. Further, a locking cover connecting portion 1.3 is provided at the upper end of the body 1. The locking cover 6 includes a limiting sleeve 6.1 inserted into the upper end of the main chamber 100 and a connecting ring 6.2 formed on the outside of the limiting sleeve 6.1. A first annular connecting portion 6.20 is formed between the connecting ring 6.2 and the limiting sleeve 6.1 and connects to the locking cover connecting portion 1.3. The locking cover connecting portion 1.3 and the annular connecting portion 6.20 are connected by a concave-convex structure. The sidewalls of the locking cover connecting portion 1.3 and the annular connecting portion 6.20 can be tightly connected by a concave-convex structure.

[0041] In one embodiment, when the pressing unit a is in the locked state, the lower end of the pressing nozzle 5' abuts against or is adjacent to the upper end of the locking cover 6. This design effectively prevents the pressing nozzle 5' from being pressed down, providing a double locking function.

[0042] See Figure 2 , Figure 4 and Figure 6 The push-button connecting portion 2.1 includes a main column upper connecting portion 2.10 disposed at the upper end of the main column member 2. The annular connecting portion 2.10 extends out of the upper connecting end 2.11 of the column core 201. A second annular connecting portion 2.12 is formed between the main column upper connecting portion 2.10 and the upper connecting end 2.11. The push-button 5' is provided with the push-button connecting portion 2.1, and the push-button connecting portion 2.1 is inserted into the second annular connecting portion 2.12. The upper connecting end 2.11 of the column core 201 is inserted into the push-button connecting portion 2.1. In one embodiment, the sidewalls of the push-button connecting portion 2.1 and the second annular connecting portion 2.12 can be tightly connected by a concave-convex structure.

[0043] See Figures 1 to 8The piston valve component 5 includes a piston 5.1 and a sub-pillar component 5.2. The piston 5.1 is connected to the lower end of the core 201 through the sub-pillar component 5.2.

[0044] See Figures 1 to 11 The suction channel 10 is equipped with a one-way valve structure 1.1, which includes a plastic ball 1.10 and a limiting structure 1.11 to prevent the plastic ball 1.10 from disengaging. A connector 1.2 can be configured at the lower end of the suction channel 10 for connecting to the tube body.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. The present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention.

Claims

1. A bottom-screw lock-type all-plastic emulsion pump, characterized in that, include: The main body (1) has a vertically extending main chamber (100), with an opening at the upper end and a suction channel (10) at the lower end. The inner wall of the main body (1) is provided with several vertically extending lifting rails (s1). The pressing unit (a) includes: a main column component (2) with a push-button connection part (2.1) at the upper end and a rotary drive part (2.2) at the lower end, and a main column channel (200) that vertically connects the rotary drive part (2.2) and the push-button connection part (2.1) inside; a rotating seat component (3) with a coupling hole (30) in the middle that is rotatably coupled to the rotary drive part (2.2) and vertically movable, and a locking protrusion (s2) on the outer side that corresponds to the lifting rail (s1); the rotary drive part (2.2) and the coupling hole are polygonal; an elastic element (4) acts on the rotating seat component (3) and the main column component (2) to generate an upward elastic force that makes the main column component (2) relative to the rotating seat component (3); and a piston valve component (5) connected to the lower end of the main column component (2) and located on the lower side of the rotating seat component (3). The push button (5') is connected to the push button connecting part (2.1); Lock cover (6), connected to the upper end of the body (1), is used to limit the rotation seat component (3) from disengaging from the body (1). Connecting cover (7) is disposed on the upper end of the main body (1); The pressing unit (a) is assembled into the main chamber (100), and the locking protrusion (s2) of the rotating seat component (3) is assembled into the corresponding lifting rail (s1). An adjustment space (h) is designed in the lower part of the main chamber (100). When the main column component (2) is rotated by the pusher (5'), the rotating seat component (3) is rotated, causing the locking protrusion (s2) to move between the upper and lower ends of the lifting rail (s1), thereby switching the open and locked states of the pressing unit (a). The rotating seat component (3) has a seat cavity (300) with an upper opening. The coupling hole (30) is provided in the middle of the bottom wall (301) of the seat cavity. The main column component (2) includes a column core (201) and a guide sleeve (202) located on the upper outer side of the column core (201). The main column channel (200) is provided inside the column core (201). The upper part of the guide sleeve (202) and the column core (201) are connected to form an upper limit part (203). An annular space (20) with a lower opening is formed between the guide sleeve (202) and the column core (201). The elastic element (4) is sleeved on the outer side of the column core (201) and acts between the bottom wall (301) of the seat cavity and the upper limit part (203). The outer side of the guide sleeve (202) is adapted to the inner wall of the seat cavity (300) and can slide vertically relative to it.

2. The down-spinning lock-type all-plastic emulsion pump according to claim 1, characterized in that, The upper lower wall of the lifting rail (s1) is provided with an upper positioning part (s11) with a locking protrusion (s2), and the upper positioning part (s11) has a horizontal force-bearing part (s111).

3. The down-spinning lock-type all-plastic emulsion pump according to claim 1, characterized in that, The push-button connection (2.1) includes a main column upper connection (2.10) provided on the upper end of the main column member (2), the main column upper connection (2.10) extends out of the upper connection end (2.11) of the column core (201), and a second annular connection (2.12) is formed between the main column upper connection (2.10) and the upper connection end (2.11). The push-button (5') is provided with the push-button connection (2.1), the push-button connection (2.1) is inserted into the second annular connection (2.12), and the upper connection end (2.11) of the column core (201) is inserted into the push-button connection (2.1).

4. The down-spinning lock-type all-plastic emulsion pump according to claim 1, characterized in that, A return air hole (100') is provided at the lower part of the main chamber (100). When the pressure unit (a) is in the open state and the main column component (2) is in the reset state, the piston valve component (5) blocks the inside of the return air hole (100').

5. The down-spinning lock-type all-plastic emulsion pump according to claim 1, characterized in that, The upper end of the main body (1) is provided with a locking cover connecting part (1.3). The locking cover (6) includes a limiting sleeve (6.1) inserted into the upper end of the main chamber (100) and a connecting ring (6.2) formed on the outside of the limiting sleeve (6.1). An annular connecting part is formed between the connecting ring (6.2) and the limiting sleeve (6.1) and is connected to the locking cover connecting part (1.3).

6. The down-spinning lock-type all-plastic emulsion pump according to any one of claims 1 to 5, characterized in that, At least one pair of planes is provided between the rotary drive unit (2.2) and the coupling hole (30) to restrict their relative rotation.

7. The down-spinning lock-type all-plastic emulsion pump according to claim 6, characterized in that, The rotary drive unit (2.2) and the coupling hole are flat on both sides or flat on one side.

8. The down-spinning lock-type all-plastic emulsion pump according to any one of claims 1 to 5, characterized in that, When the push-button unit (a) is in the locked state, the lower end of the push-button (5') abuts against or is adjacent to the upper end of the lock cover (6).

9. The down-spinning lock-type all-plastic emulsion pump according to any one of claims 1 to 5, characterized in that... The piston valve component (5) includes a piston (5.1) and a sub-pillar component (5.2), with the piston (5.1) connected to the lower end of the core (201) via the sub-pillar component (5.2).

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