WO2022127833A1

WO2022127833A1 - Pump dispenser and container

Info

Publication number: WO2022127833A1
Application number: PCT/CN2021/138445
Authority: WO
Inventors: 陈增新; 李生录; 夏建松; 李陈; 魏晋霞; 周长春; 魏海明; 陈京哲; 陈斌
Original assignee: 北京红海科技开发有限公司
Priority date: 2020-12-15
Filing date: 2021-12-15
Publication date: 2022-06-23

Abstract

A pump dispenser and a container using same. The pump dispenser comprises a piston (2) and a liquid suction channel (4), and further comprises an axial movement assembly (1), sealing components (31, 32), an outflow channel (5), and a support (6); the axial movement assembly (1) comprises a liquid temporary storage portion (11), an opening portion (12), and a sealing end (13); the internal spaces of the liquid temporary storage portion (11) and the opening portion (12) form a liquid storage space (14); one end of the liquid storage space (14) is sealed by the piston (2), and the other end is sealed by the sealing end (13); the opening portion (12) is provided with an opening (15); as the piston (2) moves away, an outlet (41) of the liquid suction channel (4) and an inlet (51) of the outflow channel (5) are sequentially distributed on the stroke side of the opening (15) and can be in communication with the opening (15), separately; the sealing components (31, 32) seal a gap at a joint when the opening (15) is in communication with the outlet (41) of the liquid suction channel (4) or the inlet (51) of the outflow channel (5); the movement distance of the opening (15) when the opening (15) is separately in communication with the outlet (41) of the liquid suction channel (4) or the inlet (51) of the outflow channel (5) is the maximum axial reciprocating movement distance of the axial movement assembly (1).

Description

Pump head and container

technical field

The present invention relates to a pump head and a container, in particular to a pump head for easily, quickly and large-capacity removal of the contents and a container using the pump head.

Background technique

The pump head is a product that people often use. The unit price of the existing pump head is not high, but there are many components, and the material cost and assembly cost occupy a large proportion in the production cost. However, reducing the number of components requires restructuring the pump head structure, and the research and development cost of the restructuring structure is high, so few people are willing to try it. Therefore, although the pump head technology is a traditional technology, widely used, and the production process is mature, the pump head structure has rarely been substantially improved for decades.

There may be various materials for the existing pump head, such as plastics, metal springs, glass beads, and various plastics. It is inconvenient to disassemble and reuse various materials after recycling, which is not conducive to the recycling of materials, and is not conducive to the management of environmental problems such as plastic pollution.

There are still many functional problems in the commonly used pump heads, such as the air tightness is not easy to maintain for a long time, the large spring force affects the controllability, the single extraction volume is too small, and the liquid with high viscous consistency cannot be extracted.

With the improvement of people's living standards, people need pump heads and containers with lower manufacturing costs, convenient recycling and better performance, which can improve the operating feel during the taking process and improve the performance of the pump head for taking out fluids.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems in the prior art, the present invention provides a pump head, comprising a piston and a liquid suction channel, and is characterized in that it also includes an axial moving component, a sealing component, an outflow channel and a bracket;

The axial moving component includes a buffer liquid part, an opening part and a closed end;

The internal space of the buffer liquid part and the opening part is a liquid storage space;

One end of the liquid storage space is closed by the piston, and the other end is closed by the closed end;

The opening is provided with an opening;

According to the order of distance from the piston from near to far, the outlet of the suction channel and the inlet of the outflow channel are sequentially distributed on the side of the opening stroke, and can be communicated with the opening respectively;

The sealing part seals the gap at the joint when the opening is communicated with the outlet of the suction channel or the inlet of the outflow channel;

The movement distance of the opening when it communicates with the outlet of the suction channel and the inlet of the outflow channel respectively is the maximum distance of the reciprocating axial movement of the axial movement component;

The bracket prevents the axial movement assembly from continuing to move after the opening communicates with the outlet of the suction channel or the inlet of the outflow channel.

The liquid storage space of the axial moving assembly has the function of temporarily storing the liquid to be taken out. One end of the liquid storage space will be closed by the piston, and the liquid will not enter and exit from this end; the other end is closed by the closed end. The buffer liquid part is directly connected with the opening part, and the internal space is communicated.

This axial moving component has a simple structure, unique shape, and is convenient for mass production; it has no requirements for product materials, which can reduce production costs; the components matched with it are simple and small in number, which is convenient for production and assembly; it can realize the existing pump head A hybrid function that can only be achieved by multiple components.

In this pump head, the liquid storage part, the opening part, the closed end and the axis line of the sealing part are coincident, so as to facilitate the mechanical assembly and facilitate the axial movement of the axial moving component.

In this pump head, a sealing member may be provided inside the frame between the suction channel and the outflow channel. Such a frame may be an annular structure surrounding the movement trajectory of the opening, isolating the suction channel and the outflow channel. The sealing method in which the sealing member does not move but the opening moves can reduce the number of sealing members.

In this pump head, the bracket can be arranged in the radial groove on the axially movable assembly. Using the groove formed by the difference in the diameter of each part of the axial moving component to set the bracket has several advantages: the bracket can better stabilize the axial moving component and prevent non-axial movement; the groove surface can be used as one of the supporting surfaces, which helps In order to keep it smooth; the bracket utilizes both sides of the groove to prevent the axial moving component from continuing to move after the opening is communicated with the outlet of the suction channel or the inlet of the outflow channel without additional facilities.

In this pump head, sealing parts can be arranged on the axially moving assembly, respectively located on both sides of the opening. This sealing method is easy to assemble.

In such a pump head, one side sealing member may be provided on the closed end. The sealing part is arranged on the closed end, which can not only save space, but also ensure the sealing effect.

With this pump head, the main body of the outflow channel can be located on the side of the opening of the pump head. The outlet of the outflow channel of the existing pump head is located at the top of the pump head, which is mostly set independently, which wastes materials and space; in contrast, it is arranged on the opening side (not the top) of the pump head, so that the outflow channel does not need to go around the entire pump head. , reducing the outflow channel length. The length of the main body of the outflow channel is short, which can reduce pressure loss, save materials, and reduce the space occupied by the pump head.

In this pump head, a protruding part can be provided on the outer side of the axial moving component, and the protruding part cooperates with the bracket and can limit the axial moving distance of the axial moving component. The protruding part can be a specially provided blocking member, or can use the difference in diameter of each part of the axial moving assembly to use the buffer liquid part, the opening part or the end of the closed end as the blocking member.

The pump head and the partial outer peripheral surface of the axially moving assembly can be provided with a smooth support surface parallel to the axis of the axially moving assembly, and the supporting surface supports the entire axial reciprocating movement of the axially moving assembly. The supporting surface may be located on the outer peripheral surface of the buffer liquid portion or the closed end, or may be located on the outer peripheral surface of the connection between the buffer liquid portion and the opening portion. After being combined with the support, the smooth support surface supports the axially moving component to move back and forth in a short distance in the axial direction, preventing the non-axial shaking of the axially moving component.

The present invention also relates to a container comprising a container body and a pump head of the above-mentioned invention.

The pump head and container overcome various problems existing in the prior art container, and have the advantages of few components, convenient assembly, convenient use, the ability to take out the contents with high viscosity and consistency, large amount taken out in a single operation, and strong practicability. Etc. At the same time, the material of the pump head and the container is single, which is easy to be recycled and reused, which is beneficial to reduce the pressure of environmental pollution.

Description of drawings

Fig. 1 is the sectional view of the pump head described in Example 1;

2 is an exploded view of a cross-sectional view of the pump head of Example 1. FIG.

3 is a cross-sectional view of the pump head described in Embodiment 2;

Fig. 4 is the exploded view of the pump head Fig. 3 described in embodiment 2;

5 is a cross-sectional view of the pump head described in Embodiment 3 and an exploded view thereof;

6 is a perspective view of the pump head described in Embodiment 3 and an exploded view thereof;

7 is a sectional view of the pump head described in Embodiment 4 and an exploded view thereof;

8 is a perspective view of the pump head according to Embodiment 4 and an exploded view thereof.

Detailed ways

Example 1

As shown in Figures 1 and 2, it is a pump head according to Embodiment 1 of the present invention. 1 is a cross-sectional view of the pump head according to the first embodiment, and FIG. 2 is an exploded view of the cross-sectional view of the pump head according to the first embodiment. The pump head includes an axial movement assembly 1 , a piston 2 , a sealing part 31 , a sealing part 32 , a suction channel 4 , an outflow channel 5 , a bracket 6 , a connecting rod 21 , a cover 22 , and a container cover 10 .

The axial movement assembly 1 includes a buffer liquid part 11, an opening part 12 and a closed end 13; one end of the opening part 12 is connected to the buffer liquid part 11, and the other end is connected to the closed end 13; the internal space of the buffer liquid part 11 and the opening part 12 is a liquid storage space 14; One end of the liquid storage space 14 is closed by the piston 2, and the other end is closed by the closed end 13; the opening 12 is provided with a plurality of openings 15, and the liquid to be taken enters or leaves the liquid storage space 14 through the openings 15. A blocking ring 16 and a convex rib 17 are arranged on the outside of the axial moving assembly 1 , and a smooth supporting surface 18 parallel to the axis of the axial moving assembly is disposed on the partial outer peripheral side of the axial moving assembly 1 .

Among them, the axis lines of the piston, the buffer liquid portion 11 , the opening portion 12 and the closed end 13 coincide. A plurality of openings 15 are provided at the same axial position of the opening. A protruding part blocking ring 16 and a protruding rib 17 are provided on the outside of the buffer liquid part 11 , and the protruding part cooperates with the bracket 6 to limit the axial movement distance of the axial movement assembly 1 . A support surface 18 is provided on a partial outer peripheral surface of the axial motion assembly 1 to support the overall axial reciprocating motion of the axial motion assembly 1 . The two sides of the opening 15 are provided with positions for installing the sealing member 31 and the sealing member 32 , wherein the sealing ring member is located on the closed end 13 . The cover 22 helps the connecting rod 21 to maintain linear motion and prevents shaking.

On the bracket 6 below the sealing member 32 on the closed end 12, a return air passage 63 is provided. The air inlet end of the return air passage 63 is arranged in the bracket 6, and the air outlet end is communicated with the outside of the bracket 6 and the inside of the screw cap 10, and can be communicated with the inside of the container. The inlet end of the return air passage 63 is usually pressed by the sealing member 32 of the closed end 12, and only when the piston 2 moves to the right during suction, the sealing member 32 is opened when the sealing member 32 moves to the right. The main body of the outflow channel 5 is located on one side of the opening 15 of the pump head, and the piston 2 is located on the other side of the opening 15 of the pump head.

The piston 2 is pulled to the outside of the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the right, so that the opening 15 is communicated with the outlet 41 of the suction channel 4; The inner side of the side installation port is blocked by the chamfer, and the axial movement assembly 1 no longer moves to the right. When the piston 2 is pulled, the liquid to be taken enters the liquid storage space 14 from the liquid suction channel 4 through the opening 15 .

The piston 2 is pushed to the inside of the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the left, so that the opening 15 is connected with the inlet 51 of the outflow channel 5; The opening blocks, the axial movement assembly 1 no longer moves to the left, and the piston 2 pushes the liquid in the liquid storage space 14 to flow out from the outflow channel 5 through the opening 15 .

The pump head of this embodiment has a simple structure, has no requirements on product materials, and can reduce production costs; the components matched with it are simple and small in number, which is convenient for production and assembly. It has the advantages of good air tightness, strong controllability, large volume taken out in a single time, and the ability to take out viscous and thick liquids.

Embodiment 1 This pump head is mounted on the main body of a container that can hold liquid, that is, a container using this pump head is formed. Therefore, the container has the advantages of less components, convenient assembly, convenient use, the ability to take out the contents with high viscosity and consistency, and strong practicability. At the same time, the pump head and the container are made of a single material, which can be all plastics, so that the plastics can be easily recycled and reused.

Example 2

As shown in FIG. 3 , it is a cross-sectional view of a pump head according to Embodiment 2, and FIG. 4 is an exploded view of FIG. 3 . The pump head includes an axial movement assembly 1 , a piston 2 , a sealing part 31 , a sealing part 32 , a suction channel 4 , an outflow channel 5 , a bracket 6 , a connecting rod 21 and a cover 22 .

The axial movement assembly 1 includes a buffer liquid part 11, an opening part 12 and a closed end 13; one end of the opening part 12 is connected to the buffer liquid part 11, and the other end is connected to the closed end 13; the internal space of the buffer liquid part 11 and the opening part 12 is a liquid storage space 14; One end of the liquid storage space 14 is closed by the piston 2, and the other end is closed by the closed end 13; A shoulder 16 and a chamfer 17 are provided on the outside of the axial moving assembly 1, and a smooth supporting surface 18 parallel to the axis of the axial moving assembly is provided on the partial outer peripheral side of the axial moving assembly 1.

Among them, the axis lines of the buffer liquid portion 11 , the opening portion 12 and the closed end 13 coincide. A plurality of openings 15 are provided at the same axial position of the opening portion 12 . A shoulder 16 and a chamfer 17 are provided on the outside of the buffer liquid portion 11 , and the shoulder 16 and the chamfer 17 cooperate with the bracket 6 to limit the distance of the axial movement of the axial movement component 1 . A support surface 18 is provided on a partial outer peripheral surface of the axial motion assembly 1 , and the support surface 18 supports the entire axial reciprocating motion of the axial motion assembly 1 on the bracket 6 . Positions for installing the sealing ring 31 and the sealing ring 32 are provided on both sides of the opening 15 , wherein the sealing ring 32 is located on the closed end 13 . In terms of diameter, the diameter of the buffer liquid portion 11 is larger than that of the opening portion 12 , and the diameter of the opening portion 12 is larger than that of the closed end 13 .

The piston 2 is pulled to the outside of the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the right, so that the opening 15 is connected to the suction channel 4; The outer convex rib blocks, the axial movement assembly 1 no longer moves to the right, and when the piston 2 is pulled, the liquid to be taken enters the liquid storage space 14 from the liquid suction channel 4 through the opening 15 .

The piston 2 is pushed into the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the left, so that the opening 15 is connected with the outflow channel 5; if the piston 2 continues to be pushed, the shoulder 16 is blocked by the installation port on the right side of the bracket 6 , the axial movement assembly 1 no longer moves to the left, and the piston 2 pushes the liquid in the liquid storage space 14 to flow out from the outflow channel 5 through the opening 15 .

Example 2 This pump head has the advantages of good air tightness, strong controllability, large volume taken out in a single time, and the ability to take out viscous and thick liquids.

Example 2 This pump head is mounted on the container body, that is, the container is formed. Example 2 The pump head and the container using the pump head also have the advantages of few components, convenient assembly, convenient use, the ability to take out the contents with high viscosity and consistency, and strong practicability. At the same time, the pump head and the container are made of a single material, which can be all plastics, so that the plastics can be easily recycled and reused.

Example 3

As shown in Figure 5 and Figure 6, it is the pump head described in Embodiment 3. 5 is a cross-sectional view of the pump head according to Embodiment 3 and an exploded view thereof, and FIG. 6 is a perspective view of the pump head according to Embodiment 3 and an exploded view thereof. The pump head includes an axial movement assembly 1 , a piston 2 , a sealing part 31 , a sealing part 32 , a liquid suction channel 4 , an outflow channel 5 , a bracket 6 , and a connection cover 21 .

The axial movement assembly 1 includes a buffer liquid part 11, an opening part 12 and a closed end 13; one end of the opening part 12 is connected to the buffer liquid part 11, and the other end is connected to the closed end 13; the internal space of the buffer liquid part 11 and the opening part 12 is a liquid storage space 14; One end of the liquid storage space 14 is closed by the piston 2, and the other end is closed by the closed end 13; The diameter of the buffer liquid portion 11 of the axial movement assembly 1 is larger than that of the opening portion 12 , forming a shoulder portion 16 . A smooth support surface 18 parallel to the axis of the axial moving assembly is provided on the partial outer peripheral side of the connection between the buffer liquid portion 11 and the opening portion 12 . The diameter of the circular hole 61 in the middle of the bracket 6 is slightly larger than the diameter of the connection between the buffer liquid part 11 and the opening part 12. After the axial movement component 1 is installed on the bracket 6 through the circular hole 61, it is installed on the opening part 12 and the closed end 13. The sealing member 31 and the sealing member 32 . At this time, the bracket 6 is located in the radial groove formed by the liquid buffer portion and the sealing member 31 on the axial moving assembly. In addition, a frame 7 is also included, the outlet 41 of the suction channel 4 and the inlet 51 of the outflow channel 5 are located on the frame 7 , and the outlet 52 of the outflow channel 5 is located on the bracket 6 .

In this embodiment, the axis lines of the buffer liquid portion 11 , the opening portion 12 and the closed end 13 coincide. A plurality of openings 15 are provided at the same axial position of the opening portion 12 . A shoulder 16 is formed on the outer side of the buffer liquid portion 11 , and the shoulder 16 and the sealing member 31 cooperate with the bracket 6 to limit the distance of the axial movement of the axial movement component 1 . A support surface 18 is provided on the partial outer peripheral side of the connection between the buffer liquid portion 11 and the opening portion 12 , and the support surface 18 ensures the overall axial reciprocating motion of the axial movement component 1 on the bracket 6 . Positions for installing the sealing ring 31 and the sealing ring 32 are provided on both sides of the opening 15 , wherein the sealing ring 32 is located on the closed end 13 . The diameter of the buffer liquid portion 11 is larger than that of the opening portion 12 , and the diameter of the opening portion 12 is larger than that of the closed end 13 .

The piston 2 is pulled to the outside of the axial movement assembly 1 through the connecting cover 21, and the axial movement assembly 1 moves upward as a whole, so that the opening 15 is communicated with the suction channel 4; The moving component 1 no longer moves upward, and the liquid to be taken enters the liquid storage space 14 from the suction channel 4 through the opening 15 under the pulling of the negative pressure formed by the piston 2 .

The piston 2 is pushed into the axial movement assembly 1 through the connecting cover 21, and the axial movement assembly 1 moves downward as a whole, so that the opening 15 is communicated with the outflow channel 5; The moving assembly 1 no longer moves downward, and the piston 2 pushes the liquid in the liquid storage space 14 to flow out from the outflow channel 5 through the opening 15 .

Similarly, the axial movement assembly 1 of this embodiment has a simple structure and multiple functions, which is convenient for mass production; it has no requirements for product materials, which can reduce production costs;

Example 4

As shown in FIG. 7 and FIG. 8 , it is a pump head according to Embodiment 4. 7 is a cross-sectional view of the pump head according to Embodiment 4 and an exploded view thereof, and FIG. 8 is a perspective view of the pump head according to Embodiment 4 and an exploded view thereof. The pump head includes an axial movement component 1 , a piston 2 , a suction channel 4 , an outflow channel 5 , a bracket 6 , a connecting rod 21 , and a cover 22 .

The axial movement assembly 1 includes a buffer liquid part 11, an opening part 12 and a closed end 13; one end of the opening part 12 is connected to the buffer liquid part 11, and the other end is connected to the closed end 13; the internal space of the buffer liquid part 11 and the opening part 12 is a liquid storage space 14; One end of the liquid storage space 14 is closed by the piston 2, and the other end is closed by the closed end 13; the opening 12 is provided with a plurality of openings 15, and the liquid to be taken enters or leaves the liquid storage space 14 through the openings 15. A blocking ring 16 and a blocking ring 17 are provided on the outside of the axial moving assembly 1 , and a smooth supporting surface 18 parallel to the axis of the axial moving assembly is provided on the partial outer peripheral side of the axial moving assembly 1 . The bracket 6 supports the support surface 18 to support the axial reciprocating movement of the axial movement assembly 1 as a whole. The bracket 6 is located in the radial groove formed by the blocking ring 16 and the blocking ring 17 on the outside of the buffering liquid portion. The diameter of the buffer liquid part 11 is larger than that of the opening part 12 and the closed end 13 , and the opening part 12 and the closed end 13 have the same diameter.

Among them, the axis lines of the piston, the buffer liquid portion 11 , the opening portion 12 and the closed end 13 coincide. A plurality of openings 15 are provided at the same axial position of the opening. A blocking ring 16 and a blocking ring 17 are provided on the outside of the buffer liquid portion 11 of the axial motion assembly 1 . The blocking ring 16 and the blocking ring 17 cooperate with the bracket 6 to limit the axial movement distance of the axial motion assembly 1 . A support surface 18 is provided on a partial outer peripheral surface of the axial motion assembly 1 to support the overall axial reciprocating motion of the axial motion assembly 1 .

The two sides of the annular frame 7 are the outlet 41 of the suction channel 4 and the inlet 51 of the outflow channel 5 respectively, and the inlet 51 of the outflow channel 5 is located outside. A position where the sealing member 31 is attached is provided on the inner surface of the frame 7 . The sealing member 31 can reciprocate the opening and the closed end of the axial movement assembly 1, and at the same time close the gap between the outlet 41 of the isolation suction channel 4 and the inlet 51 of the outflow channel 5 to prevent mixed flow. After the opening 12 and the closed end 13 of the axial movement assembly 1 are installed on the frame 7 , the installation opening is sealed with the sealing member 32 . The cover 22 helps the connecting rod 21 to maintain linear motion and prevents shaking.

The piston 2 is pulled to the outside of the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the right, so that the opening 15 is connected with the suction channel 4; The moving assembly 1 no longer moves to the right, and when the piston 2 is pulled, the liquid to be taken enters the liquid storage space 14 from the liquid suction channel 4 through the opening 15 .

The piston 2 is pushed into the axial movement assembly 1 through the connecting rod 21, and the axial movement assembly 1 moves to the left, so that the opening 15 is connected with the outflow channel 5; if the piston 2 is further pushed, the blocking ring 16 is blocked by the bracket 6 and moves axially. The assembly 1 can no longer move to the left, and the piston 2 pushes the liquid in the liquid storage space 14 to flow out from the outflow channel 5 through the opening 15 .

The pump head provided by the invention has the advantages of simple structure and various application scenarios, and has the advantages of good air tightness, strong controllability, large volume taken out in a single time, and liquid with high viscosity and high consistency can be taken out.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention , variants and combinations. The scope of the invention is defined by the appended claims and their equivalents.

Claims

A pump head, comprising a piston and a liquid suction channel, is characterized in that it further comprises an axial moving component, a sealing part, an outflow channel and a bracket;

The axial movement assembly includes a buffer liquid portion, an opening portion and a closed end;

The internal space of the buffer liquid portion and the opening portion is a liquid storage space;

One end of the liquid storage space is closed by the piston, and the other end is closed by the closed end;

The opening is provided with an opening;

According to the distance from the piston from near to far, the outlet of the suction channel and the inlet of the outflow channel are sequentially distributed on the side of the opening stroke, and can be communicated with the opening respectively;

The sealing member seals the gap at the joint when the opening is communicated with the outlet of the suction channel or the inlet of the outflow channel;

The movement distance of the opening when it communicates with the outlet of the suction channel and the inlet of the outflow channel respectively is the maximum distance of the reciprocating axial movement of the axial movement component;

The bracket prevents the axial movement assembly from continuing to move after the opening communicates with the outlet of the suction channel or the inlet of the outflow channel.
The pump head according to claim 1, wherein the buffer liquid portion, the opening portion, the closed end and the axis line of the sealing member coincide.
The pump head of claim 1, wherein the main body of the outflow channel is located on the side of the opening of the pump head.
The pump head according to claim 1, wherein a smooth support surface parallel to the axis of the axial moving assembly is provided on the outer surface of the axial moving assembly.
The pump head according to claim 1, characterized in that a protruding portion is provided on the outer side of the axial moving assembly.
The pump head of claim 1, wherein the sealing member is provided inside the frame between the suction channel and the outflow channel.
The pump head of claim 1 wherein said brackets are disposed in radial grooves on said axially movable assembly.
The pump head according to claim 1, wherein the diameter of the liquid buffer portion is larger than the diameter of the opening portion and the closed end; or the diameter of the opening portion is larger than the diameter of the closed end.
The pump head according to claim 1, characterized in that the sealing parts are arranged on the axial moving component, and are respectively located on both sides of the opening.
A container, comprising a container body, is characterized in that it further comprises the pump head according to any one of claims 1-9.