A pump head and a container

Abstract

The present application provides a pump head and a container using the pump head. The pump head comprises a piston and a liquid suction channel, a piston and a liquid suction channel, and further comprises an axial movement combination, an outflow channel, a sealing component and a support; wherein the axial movement combination comprises a liquid storage part assembly and a closed end assembly; the liquid storage part assembly is connected with the closed end assembly to form an opening; the liquid storage part assembly and the closed end assembly are located on both sides of the opening; the internal space of the liquid storage part assembly is a liquid storage space which is in communication with the opening; one end of the liquid storage space is closed by the piston, and the other end is closed by the closed end assembly. The container has the advantages of simple structure, firmness and durability, smaller pressure drop, better sealing, larger single extraction amount, quantitative extraction of the contained objects, prevention of oxidation and pollution of the contained objects, reduction of environmental pollution, and suitability for containing daily life objects, food and medicine.

Description

TECHNICAL FIELD

[0001] The present application relates to a pump head and a container, in particular, a pump head which is convenient to assemble, easy to use and can take out a large amount of contents, and a container using the pump head. BACKGROUND

[0002] The pump head is a product that people often use. The existing pump head has many components, and the material cost and assembly cost account for a large proportion of the production cost. However, reducing the number of components requires reorganization and modification of the pump head structure, which has high research and development cost and is difficult to achieve, so few people are willing to try. Therefore, although the pump head technology is a traditional technology with wide application and mature production process, there has been little substantial improvement in the pump head structure for decades.

[0003] The existing pump head may be composed of multiple materials, such as plastic, spring, and glass beads, and the plastic may also have multiple types. Recycling and reusing multiple materials are not convenient, which is not conducive to material recycling and environmental problems such as plastic pollution.

[0004] There are still many functional problems with the commonly used pump head, such as difficulty in maintaining air tightness for a long time, large spring force affecting controllability, too small volume taken out at a time, and inability to take out liquid with high viscosity, etc. The existing structure of the pump head also attempts to solve these problems, but the effect is not obvious.

[0005] With the improvement of people's living standards, people need pump heads and containers with lower manufacturing cost, convenient recycling, and better performance to improve the operation feel during use and improve the performance of the pump head in taking out fluid. SUMMARY

[0006] In order to solve the problems existing in the prior art, the present application provides a pump head, comprising a piston and a liquid suction channel, characterized in that it further comprises a piston and a liquid suction channel, and further comprises an axial movement combination, an outflow channel, a sealing component, and a support;

[0007] The axial movement combination comprises a liquid buffer part assembly and a closed end assembly; the liquid buffer part assembly is connected with the closed end assembly to form an opening; the liquid buffer part assembly and the closed end assembly are located on both sides of the opening; here, the liquid buffer part assembly and the closed end assembly are connected in a straight line, not at a right angle.

[0008] The internal space of the liquid buffer part assembly is a liquid storage space, which is in communication with the opening; if the liquid buffer part assembly is connected with the closed end assembly through a communication member, the liquid storage space also includes the internal space of the communication member.

[0009] One end of the liquid storage space is closed by the piston, and the other end is closed by the closed end assembly.

[0010] The outlet of the liquid suction channel and the inlet of the liquid outflow channel are arranged in sequence on the open stroke side in order from the piston, and can be connected to the opening respectively;

[0011] The gap at the joint when the sealing part seals the opening connected to the outlet of the liquid suction channel or the inlet of the liquid outflow channel;

[0012] The movement distance of the opening when connected to the outlet of the liquid suction channel and the inlet of the liquid outflow channel respectively is the maximum distance of the axial movement combination of the reciprocating axial movement;

[0013] The bracket prevents the axial movement combination from continuing to move after the opening is connected to the outlet of the liquid suction channel or the inlet of the liquid outflow channel.

[0014] The liquid storage space of the axial movement combination has the function of temporarily storing the liquid to be taken out. One end of the liquid storage space is closed by the external piston, and the liquid cannot enter or exit from this end. The other end is closed by the closed end assembly. The connection mode of the buffer liquid part assembly and the closed end assembly includes but is not limited to screw connection, clamping connection, etc. The liquid storage space is connected to the opening, and the liquid enters and exits the liquid storage space through the opening. The bracket supports the axial movement combination to move axially and limits the movement distance of the axial movement combination.

[0015] The axial movement combination has simple structure, convenient assembly, is conducive to large-scale production, and can reduce production cost; the components matched with it are simple and few in number, which is convenient for production and assembly; and the mixing function that can be realized by multiple components of the existing pump head can be realized.

[0016] The pump head, the buffer liquid part assembly can also be connected to the closed end assembly through the communication member, and the sealing part is arranged on the communication member. The communication member can pass through the buffer liquid part assembly and the opening in the middle, and the sealing part can be arranged on the outside, which is convenient for mold production and mechanical assembly.

[0017] The pump head can make the closed end assembly and / or the communication member be produced integrally with the sealing part respectively. Using the closed end assembly and the communication member produced integrally with the sealing part respectively can not only reduce the number of components, facilitate mold production and mechanical assembly, but also ensure the sealing effect.

[0018] The pump head, the piston, the buffer liquid part assembly, the closed end assembly and the sealing part can be arranged on the same axis to facilitate mechanical assembly.

[0019] The pump head, the sealing part can be arranged inside the frame between the liquid suction channel and the liquid outflow channel. The frame can be a ring structure to isolate the liquid suction channel and the liquid outflow channel. The sealing mode of the opening moving and the sealing part (or part of the sealing part) not moving can reduce the number of sealing parts and reduce the movement resistance.

[0020] The sealing part can be arranged on both sides of the opening of the pump head. The sealing method is convenient to assemble.

[0021] The pump head can make the outflow channel body located on the opening side of the pump head. The outlet of the outflow channel of the existing pump head is located on the top of the pump head and is usually independently arranged, which wastes materials and space. The outflow channel arranged on the opening side of the pump head can make the outflow channel not need to pass through the entire pump head, thereby reducing the length of the outflow channel. The short length of the outflow channel body can reduce the flow pressure loss, save materials, and reduce the space occupied by the pump head.

[0022] The pump head can be provided with a protruding part outside the buffer liquid part assembly. The protruding part cooperates with the bracket to limit the distance of axial movement of the axial movement assembly. The protruding part can be a specially arranged blocking piece, or the diameter difference between the buffer liquid part assembly and each part can use the buffer liquid part assembly itself as a blocking piece.

[0023] The pump head can be provided with a smooth support surface parallel to the axis of the buffer liquid part assembly on the outer circumferential surface of the buffer liquid part assembly (including the outer circumferential surface of the buffer liquid part body or the connection between the buffer liquid part and the communication part or the sealing end assembly). The support surface supports the axial movement assembly to move axially and reciprocally. The support surface can be located on the outer circumferential surface of the buffer liquid part assembly or the sealing end assembly. After being combined with the support piece, the smooth support surface supports the axial movement assembly to move axially and reciprocally for a short distance, and prevents the axial movement assembly from shaking in a non-axial direction.

[0024] The bracket can be arranged in the radial groove on the axial movement assembly. The bracket arranged in the groove formed by the difference in diameter of each part of the axial movement assembly has the following advantages: the bracket can better stabilize the axial movement assembly and prevent non-axial movement; the groove surface can serve as one of the support surfaces, which helps to keep the surface smooth; and the bracket utilizes the two sides of the groove and does not need additional facilities to prevent the axial movement assembly from moving continuously after the opening is communicated with the outlet of the liquid suction channel or the inlet of the outflow channel.

[0025] The gas return channel inlet is sealed by the sealing part, and the sealing part moves away from the inlet when the piston draws liquid. The gas return channel inlet is arranged at a position sealed by the sealing part, and the inlet is opened only when the liquid suction sealing part moves away, which can ensure that the gas is returned when needed, and can maximize the prevention of the liquid to be taken from being volatilized, and the prevention of external gas from entering the container to oxidize or contaminate the liquid.

[0026] The present application also relates to a container comprising a container body and the pump head of the above-mentioned application. The pump head and the container overcome the problems existing in the prior art containers, and have the advantages of less components, convenient assembly, convenient use, ability to take out the contained material with large viscosity and consistency, large single taking-out amount, strong practicability, etc. At the same time, the pump head and the container have single material, which is convenient for recycling and is conducive to reducing the environmental pollution pressure of plastics. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a sectional view and an exploded view of the pump head described in Example 1;

[0028] Figure 2 is a perspective view and an exploded view of the pump head described in Example 1;

[0029] Figure 3 is a sectional view and an exploded view of the pump head described in Example 2;

[0030] Figure 4 is a perspective view and an exploded view of the pump head described in Example 2;

[0031] Figure 5 is an exploded view of the sectional view of the pump head described in Example 3;

[0032] Figure 6 is an exploded view of the perspective view of the pump head described in Example 3. DETAILED DESCRIPTION

[0033] Example 1

[0034] As shown in Figure 1 and Figure 2 , it is a pump head according to Example 1 of the present application. Figure 1 is a sectional view and an exploded view of the pump head described in Example 1, Figure 2 is a perspective view and an exploded view of the pump head described in Example 1. The pump head comprises an axial movement assembly 1, a piston 2, a sealing component 31, a sealing component 32, a liquid suction channel 4, an outflow channel 5, a support 6, and a connecting piece 21.

[0035] The axial motion combination 1 comprises a liquid storage part assembly 11 and a closed end assembly 12; the liquid storage part assembly 11 is inserted into the closed end assembly 12 in a clamping manner, and a plurality of openings 15 are formed after connection; the internal space of the liquid storage part assembly 11 is a liquid storage space 14, which is in communication with the openings 15; one end of the liquid storage space 14 is closed by a piston 2, and the other end is closed by the closed end assembly 12; in order from the piston 2, the outlet 41 of the liquid suction channel 4 and the 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 respectively; the two sides of the opening 15, i.e. the outer circumferential side of the closed end assembly 12 and the liquid storage part assembly 11, are respectively provided with a sealing part 32 and a sealing part 31, which can seal the gap at the joint when the opening 15 is in communication with the outlet 41 of the liquid suction channel or the inlet 51 of the outflow channel; a bracket 6 supports the axial movement of the axial motion combination 1; the movement distance of the opening 15 when it is in communication with the outlet 41 of the liquid suction channel 4 and the inlet 51 of the outflow channel 5 respectively is the maximum distance of the axial reciprocating movement of the axial motion combination; the bracket 6 can prevent the axial motion combination 1 from continuing to move after 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.

[0036] The main body part of the liquid storage part assembly 11 of the axial motion combination 1 has a large diameter, and the connection end of the closed end assembly 12 has a small diameter, forming a blocking part 16. A smooth support surface 18 parallel to the axis of the liquid storage part assembly is arranged on the local outer circumferential side of the connection end of the liquid storage part assembly 11 which has a small diameter. The diameter of the middle circular hole 61 of the bracket 6 is slightly larger than the diameter of the connection end of the liquid storage part assembly 11, and after the liquid storage part assembly 11 is installed on the bracket 6 by passing through the circular hole 61, the closed end assembly 12 is connected at the other end, and then the sealing part 31 and the sealing part 32 are installed. The outlet 41 of the liquid suction channel 4 and the inlet 51 of the outflow channel 5 are arranged on the frame, and the outlet 52 of the outflow channel 5 is installed on the bracket 6.

[0037] In this embodiment, the piston 2, the liquid storage part assembly 11, the sealing part 31 and the sealing part 32 and the closed end assembly 12 are on the same axis. The liquid storage part assembly 11 forms a blocking part 16 on the outside, which cooperates with the middle baffle 62 of the bracket 6 to limit the axial movement distance of the axial motion combination 1. The smooth support surface 18 ensures the axial reciprocating movement of the axial motion combination 1 on the bracket 6. In terms of caliber, the caliber of the main body part of the liquid storage part assembly 11 is larger than the caliber of the closed end assembly 12. The main body of the outflow channel 5 is located on the side of the opening 15 of the pump head, and the connecting piece 21 is located on the upper side of the pump head.

[0038] Pulling piston 2 outside axial motion combination 1 through connecting piece 21, axial motion combination 1 moves upward as a whole, so that opening 15 is communicated with liquid suction channel 4; after sealing component 31 is blocked by middle baffle 62 of support 6, axial motion combination 1 no longer moves upward; under the pulling of negative pressure formed by piston 2, the liquid to be taken enters into liquid storage space 14 from liquid suction channel 4 through opening 15.

[0039] Pressing piston 2 inside axial motion combination 1 through connecting piece 21, axial motion combination 1 moves downward as a whole, so that opening 15 is communicated with liquid outflow channel 5; after blocking component 16 is blocked by middle baffle 62 of support 6, axial motion combination 1 no longer moves downward, and piston 2 pushes the liquid in liquid storage space 14 to flow out from liquid outflow channel 5 through opening 15.

[0040] The pump head of the embodiment has simple structure, no requirement for product material, and can reduce production cost; the components matched with the pump head are simple and few in number, and the production and assembly are facilitated. The pump head has the advantages of good air tightness, strong controllability, large single-taken volume, and ability to take out liquid with viscosity and large consistency.

[0041] In the embodiment, only closed end assembly 12 has multiple openings before the combination of buffer liquid component assembly 11 and closed end assembly 12, and the multiple openings form multiple openings 15 when connected and combined. The forming mode of the openings further includes that only one assembly has an opening before connection, and the opening forms an opening after combination; both assemblies have openings before connection, and the new shape opening formed after combination is an opening, etc.

[0042] Embodiment 2

[0043] As shown in Figure 3 and Figure 4 , it is a pump head according to embodiment 2 of the application. Figure 3 is a sectional view and an exploded view of the pump head of embodiment 2, Figure 4 is a perspective view and an exploded view of the pump head of embodiment 2. The pump head includes axial motion assembly 1, piston 2, liquid suction channel 4, liquid outflow channel 5, support 6, frame 7, fastener 8, and connecting piece 21 and spring 9.

[0044] The axial movement combination 1 comprises a liquid storage part assembly 11, a closed end assembly 12 and a connecting piece 13; the liquid storage part assembly 11 is in plug-in communication with the connecting piece 13; the connecting piece 13 is in plug-in communication with the closed end assembly 12, and after connection, an opening 15 is formed; the internal space of the liquid storage part assembly 11 is a liquid storage space 14, which is in communication with the opening 15; one end of the liquid storage space 14 is closed by a piston 2, and the other end is closed by the closed end assembly 12; in order from near to far from the piston 2, the outlet of the liquid suction channel 4 and the inlet of the outflow channel 5 are sequentially distributed on both sides of the stroke of the opening 15, and can be in communication with the opening 15; the outer circumferential side of the closed end assembly 12 and the connecting piece 13 comprises a sealing part, and the two sealing parts can seal the gap at the joint when the opening 15 is in communication with the outlet of the liquid suction channel or the inlet of the outflow channel; the closed end assembly 12 and the connecting piece 13 are integrally produced with the sealing part; a bracket 6 supports the axial movement of the axial movement combination 1; the movement distance of the opening 15 when it is in communication with the outlet of the liquid suction channel 4 and the inlet of the outflow channel 5 respectively is the maximum distance of the axial movement combination reciprocating axially; the bracket 6 can prevent the axial movement combination 1 from continuing to move after the opening 15 is in communication with the outlet of the liquid suction channel 4 or the inlet of the outflow channel 5.

[0045] The diameter of the liquid storage part assembly 11 of the axial movement combination 1 is greater than the diameter of the connecting piece 13, forming a blocking part 16. A smooth support surface 18 parallel to the axis of the liquid storage part assembly is arranged on the local outer circumferential side at the connection between the liquid storage part assembly 11 and the connecting piece 13. The diameter of the middle circular hole 61 in the bracket 6 is slightly larger than the diameter at the connection between the liquid storage part assembly 11 and the connecting piece 13, and after the liquid storage part assembly 11 is installed on the bracket 6 by passing through the circular hole 61, the connecting piece 13 and the closed end assembly 12 are sequentially connected at the other end. In addition, the pump head further comprises a frame 7, a fastener 8 and an outlet 52 of the outflow channel 5.

[0046] In this embodiment, the connecting piece 13 and the closed end assembly 12 are on the same axis. A plurality of openings 15 are arranged at the same axial position at the connection between the connecting piece 13 and the closed end assembly 12. The outside of the liquid storage part assembly 11 forms a blocking part 16, which cooperates with the middle baffle 62 of the bracket 6 to limit the axial movement distance of the axial movement combination 1. The smooth support surface 18 ensures the overall axial reciprocating movement of the axial movement combination 1 on the bracket 6. In terms of caliber, the caliber of the liquid storage part assembly 11 is larger than the caliber of the connecting piece 13 and the closed end assembly 12. The main body of the outflow channel 5 is located on the side of the opening 15 of the pump head, and the connecting cover 21 is located on the upper side of the pump head.

[0047] Spring 9 drives connector 21 to pull piston 2 outward from axial motion assembly 1, and axial motion assembly 1 moves upward as a whole, so that opening 15 is connected to liquid suction channel 4; after connector 13 is blocked by the middle baffle 62 of bracket 6, axial motion assembly 1 no longer moves upward; under the pull of negative pressure formed by piston 2 pulling outward, the liquid to be taken enters liquid storage space 14 from liquid suction channel 4 through opening 15.

[0048] The piston 2 is pressed into the axial motion assembly 1 by the connector 21, and the axial motion assembly 1 moves downward as a whole, so that the opening 15 is connected to the outflow channel 5; after the blocking part 16 is blocked by the middle baffle 62 of the bracket 6, the axial motion assembly 1 no longer moves downward, and the piston 2 pushes the liquid in the liquid storage space 14 to flow out through the opening 15 from the outflow channel 5.

[0049] Similarly, the pump head structure in this embodiment is simple, which reduces production costs; the components used in conjunction with it are simple and few in number, making production and assembly convenient. It has advantages such as good airtightness, strong operability, large single-volume extraction, and the ability to extract viscous and highly viscous liquids.

[0050] In this embodiment, the two components, the connecting member 13 and the closed end component 12, each have an opening before being combined. When they are connected and combined, the openings overlap to form an opening 15. The opening can be formed in the following ways: only one component has an opening before being connected, and that opening becomes an opening after being combined; both components have openings before being connected, and the new shape of the opening formed after being combined becomes an opening, etc.

[0051] Example 3

[0052] like Figure 5 and Figure 6 As shown, this is a pump head according to Embodiment 3 of the present invention. Figure 5 This is an exploded view of the cross-sectional view of the pump head described in Example 3. Figure 6 This is an exploded view of the pump head described in Embodiment 3. The pump head includes an axial motion assembly 1, a piston 2, a suction channel 4, an outlet channel 5, a bracket 6, a spring 9, a container cap 10, a connector 21, and a guide cap 22.

[0053] The axial motion combination 1 comprises a liquid storage part assembly 11 and a closed end assembly 12; the liquid storage part assembly 11 is inserted into the closed end assembly 12 in a clamping manner, and a plurality of openings 15 are formed after the connection; the internal space of the liquid storage part assembly 11 is a liquid storage space 14, which is in communication with the openings 15; one end of the liquid storage space 14 is closed by a piston 2, and the other end is closed by the closed end assembly 12; in order from near to far from the piston 2, the outlet 41 of the liquid suction channel 4 and the inlet 51 of the outflow channel 5 are sequentially distributed on the stroke side of the openings 15, and can be in communication with the openings 15, respectively; the two sides of the openings 15, i.e. the outer peripheral side of the connection part between the closed end assembly 12 and the liquid storage part assembly 11, are respectively provided with sealing parts, which can seal the gap at the joint when the openings 15 are in communication with the outlet 41 of the liquid suction channel or the inlet 51 of the outflow channel; the two sealing parts are integrally produced with the closed end assembly 12 and the connecting part 13. A bracket 6 supports the axial movement of the axial motion combination 1; the movement distance of the openings 15 when they are in communication with the outlet 41 of the liquid suction channel 4 and the inlet 51 of the outflow channel 5 respectively is the maximum distance of the reciprocating axial movement of the axial motion combination; the bracket 6 can prevent the axial motion combination 1 from continuing to move after the openings 15 are in communication with the outlet 41 of the liquid suction channel 4 or the inlet 51 of the outflow channel 5.

[0054] A gas return channel 63 is arranged on the bracket 6 below the sealing part of the closed end assembly 12. The gas inlet end of the gas return channel 63 is arranged in the bracket 6, and the gas outlet end is in communication in the container cover 10 and can be in communication with the container. The gas inlet end of the gas return channel 63 is usually pressed by the sealing part of the closed end assembly 12, and is opened only when the piston 2 moves to the right and the closed end assembly 12 moves to the right during liquid suction.

[0055] A spring 9 is arranged on the left side of the axial motion combination 1, i.e. the left side of the closed end assembly 12. During liquid taking, the piston 2 moves to the left, and the spring 9 is compressed; after the liquid taking is completed, the pressure disappears, the spring 9 returns to its original state, and slightly pushes the axial motion combination 1 to move to the right, so that the liquid in the outflow channel 5 slightly returns, preventing liquid from dripping from the outlet of the outflow channel 5. The main body of the outflow channel 5 is located on one side of the openings 15 of the pump head, and the connecting part 21 is located on the other side of the openings 15 of the pump head.

[0056] The outer peripheral side of the liquid storage part assembly 11 of the axial motion combination 1 is provided with a blocking part 16 and a protrusion 17. A smooth support surface 18 parallel to the axis of the liquid storage part assembly is arranged between the blocking part 16 and the protrusion 17. A convex rib is arranged at the mounting port of the right side of the bracket 6. After the liquid storage part assembly 11 and the closed end assembly 12 are connected, they are loaded into the bracket 6 on the right side of the spring 9. The convex rib at the mounting port of the bracket 6 is located outside the support surface 18 between the blocking part 16 and the protrusion 17. The outlet 41 of the liquid suction channel 4 and the inlet 51 of the outflow channel 5 are arranged on the bracket 6.

[0057] In this embodiment, the piston 2, the liquid buffer assembly 11 and the closed end assembly 12 are on the same axis. The blocking part 16 and the protrusion 17 cooperate with the mounting port of the bracket 6 to limit the axial movement distance of the axial movement assembly 1. The smooth support surface 18 ensures the overall axial reciprocating movement of the axial movement assembly 1 on the bracket 6.

[0058] Pull the piston 2 outside the axial movement assembly 1 through the connecting part 21, and the axial movement assembly 1 moves to the right as a whole, so that the opening 15 is connected with the liquid suction channel 4. After the protrusion 17 is blocked by the inverted bevel inside the mounting port of the bracket 6, the axial movement assembly 1 can no longer move to the right. Under the pulling of the negative pressure formed by the piston 2, the liquid to be taken enters the liquid storage space 14 from the liquid suction channel 4 through the opening 15.

[0059] Press the piston 2 inside the axial movement assembly 1 through the connecting part 21, and the axial movement assembly 1 moves to the left as a whole, so that the opening 15 is connected with the outflow channel 5. After the blocking part 16 is blocked by the mounting port of the bracket 6, the axial movement assembly 1 can no longer move to the right, and the liquid in the liquid storage space 14 is pushed out of the outflow channel 5 through the opening 15.

[0060] The pump head of this embodiment has simple structure, no requirement for product materials, and can reduce production cost. The components matched with it are simple and few in number, which is convenient for production and assembly. It has the advantages of good air tightness, strong controllability, large single taking volume, and can take out viscous and thick liquid.

[0061] In this embodiment, the liquid buffer assembly 11 and the closed end assembly 12 are combined. Before the combination, only the liquid buffer assembly 11 has multiple openings. When combined, the multiple openings form multiple openings 15. Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements, variations and combinations can be made to these embodiments without departing from the principles and spirits of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pump head comprising a piston and a suction channel, characterized in that Also comprising an axial movement combination, an outflow channel, a sealing component and a bracket; The axial movement combination comprises a liquid storage component and a closed end component; the liquid storage component is connected with the closed end component to form an opening; the liquid storage component and the closed end component are located on both sides of the opening; The inner space of the liquid storage component is a liquid storage space, which is connected with the opening; One end of the liquid storage space is closed by the piston, and the other end is closed by the closed end component; The outlet of the liquid suction channel and the inlet of the outflow channel are sequentially arranged on the stroke side of the opening in order from the piston, and can be connected with the opening respectively; The sealing component seals the gap at the joint when the opening is connected with the outlet of the liquid suction channel or the inlet of the outflow channel; The movement distance of the opening when connected with the outlet of the liquid suction channel and the inlet of the outflow channel respectively is the maximum distance of the axial movement combination moving back and forth in the axial direction; The bracket prevents the axial movement combination from continuing to move after the opening is connected with the outlet of the liquid suction channel or the inlet of the outflow channel. The liquid storage component is connected with the closed end component through a connecting piece, and the sealing component is arranged on the connecting piece.

2. A pump head as claimed in claim 1, characterised in that The closed end component and / or the connecting piece are integrally produced with the sealing component respectively.

3. A pump head as claimed in claim 2, characterised in that The piston, the liquid storage component, the closed end component and the sealing component are on the same axis.

4. The pump head of claim 1, wherein The main body of the outflow channel is located on one side of the opening of the pump head.

5. The pump head of claim 1, wherein A smooth support surface parallel to the axis of the liquid storage component is arranged on the outer side of the liquid storage component.

6. The pump head of claim 1, wherein A protruding part is arranged on the outer side of the liquid storage component.

7. The pump head of claim 1, wherein The bracket is arranged in a radial groove on the axial movement combination.

8. The pump head of claim 1, wherein The sealing component is arranged on both sides of the opening.

9. The pump head of claim 1, wherein 10. A container comprising a container body and the pump head of claim 1. ​

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