阅读说明：本技术 一种泵盖及具有该泵盖的容器 (Pump cover and container with same ) 是由 黄益新 于 2021-10-16 设计创作，主要内容包括：本申请涉及日化用品包装技术领域,公开了一种泵盖及具有该泵盖的容器。泵盖可与外部容器配套使用,泵盖包括有壳体,壳体与外部容器可拆卸连接,壳体内设置有抽取腔室,抽取腔室内滑移设置有活塞体,壳体上滑移设置有与活塞体相连接的泵嘴,且活塞体上设置有塞体单向阀；抽取腔室中还设置有腔体单向阀,腔体单向阀包括有设置于抽取腔室中的外阀体,外阀体上开设有进料口,且外阀体上滑移设置有内阀体。利用腔体单向阀代替原有的单向阀瓣结构,则泵盖可以与普通的牙膏管体结构相适配,且内阀体在外阀体上滑移运动以开启或者闭合腔体单向阀的进料口,单位时间内可流通的物料更多,从而解决了牙膏取用速度慢的缺陷。(The application relates to the technical field of daily chemical product packaging, and discloses a pump cover and a container with the same. The pump cover can be matched with an external container for use, and comprises a shell, wherein the shell is detachably connected with the external container, an extraction cavity is arranged in the shell, a piston body is arranged in the extraction cavity in a sliding manner, a pump nozzle connected with the piston body is arranged in the shell in a sliding manner, and a plug body one-way valve is arranged on the piston body; still be provided with the cavity check valve in the extraction cavity, the cavity check valve has seted up the feed inlet including setting up the outer valve body in the extraction cavity on the outer valve body, and outer valve body slides on and is provided with interior valve body. The cavity check valve is used for replacing the original check valve clack structure, the pump cover can be matched with a common toothpaste tube body structure, the inner valve body slides on the outer valve body to open or close the feed inlet of the cavity check valve, and more materials can flow in unit time, so that the defect that the toothpaste taking speed is low is overcome.)

1. The utility model provides a pump cover, is including casing (1), casing (1) can be dismantled with outer container and be connected its characterized in that: an extraction chamber (3) is arranged in the shell (1), a piston body (4) is arranged in the extraction chamber (3) in a sliding manner, a pump nozzle (2) connected with the piston body (4) is arranged in the shell (1) in a sliding manner, a plug body one-way valve (6) is arranged on the piston body (4), and the pump nozzle (2) is communicated with the extraction chamber (3) through the plug body one-way valve (6); still be provided with cavity check valve (5) in extraction cavity (3), extraction cavity (3) are linked together with the external container through cavity check valve (5), cavity check valve (5) are including setting up outer valve body (51) in extraction cavity (3), offer feed inlet (53) that are used for being linked together with the external container on outer valve body (51), just it is provided with and is used for controlling feed inlet (53) to open or closed interior valve body (52) to slide on outer valve body (51).

2. A pump cap according to claim 1, characterized in that: a sealing piece (33) is arranged at one end of the extraction chamber (3) communicated with the external container, the outer valve body (51) is arranged in the extraction chamber (3) in a sliding manner, and a puncture part (54) for puncturing the sealing piece (33) is arranged on the outer valve body (51); the piston body (4) moves under the driving of the pump nozzle (2) and is abutted to drive the outer valve body (51) to slide in the extraction chamber (3).

3. A pump cap according to claim 2, characterized in that: the outer valve body (51) of the piercing closure (33) forms a snap fit with the extraction chamber (3).

4. A pump cap according to claim 2, characterized in that: the closing member (33) is provided in a thin-walled structure.

5. A pump cap according to claim 4, characterized in that: the sealing piece (33) is provided with a groove line which is easy for the puncture part (54) to break the sealing piece (33).

6. A pump cap according to claim 1 or 2, characterized in that: one end of the extraction chamber (3) which is used for being communicated with an external container is sleeved with a sleeve (8), a straw is inserted into the sleeve (8), and the straw extends into the external container which is detachably connected with the shell (1).

7. A pump cap according to claim 6, characterized in that: a buffer chamber (83) used for communicating the suction pipe with the cavity one-way valve (5) is formed in the sleeve (8).

8. A pump cap according to claim 1, characterized in that: the shell (1) is provided with a limiting part (22) used for limiting the sliding and the releasing of the pump nozzle (2).

9. A pump cap according to claim 8, characterized in that: an opening for installing the piston body (4) in the extraction chamber (3) is formed in one end, close to the pump nozzle (2), of the extraction chamber (3), the piston body (4) and the inner cavity wall of the extraction chamber (3) form sliding sealing fit, and the limiting part (22) is further used for limiting the piston body (4) to be separated from the extraction chamber (3).

10. A pump cap according to claim 1, characterized in that: and a side channel (55) for rapid material circulation is formed on the outer valve wall of the inner valve body (52).

11. A pump cap according to claim 1, characterized in that: offer on pump nozzle (2) and be formed with discharge pipeline (23), discharge pipeline (23) are linked together through cock body check valve (6) and extraction cavity (3), just it is provided with cutting part (231) to slide along the pipeline trend in discharge pipeline (23), cutting part (231) promote the gliding open discharge pipeline (23) and the shutoff discharge pipeline (23) that slides under the negative pressure in the material.

12. A pump cap according to claim 1, characterized in that: the novel oil pump is characterized in that a reset piece which is used for driving the pump nozzle (2) and the piston body (4) to reset together after being pressed is arranged in the shell (1), and the reset piece is set to be a spring or an elastic body.

13. A pump cap according to claim 1, characterized in that: an extrusion opening (41) is formed in the piston body (4), the extrusion opening (41) is communicated with the pump nozzle (2), and the plug body one-way valve (6) is used for controlling the extrusion opening (41) to be opened or closed; the plug body one-way valve (6) comprises a fixing part (61) fixed on the piston body (4), a supporting arm part (62) extends from the fixing part (61) towards the extrusion opening (41), the supporting arm part (62) is connected with a shielding part (63), the shielding part (63) is made of elastic materials, and the shielding part (63) closes the extrusion opening (41); the piston body (4) and the pump nozzle (2) move together and extrude materials in the extraction cavity (3), and the shielding part (63) is elastically deformed by the extrusion of the materials to open the extrusion opening (41).

14. A pump cap according to claim 13, wherein: the arm support portion (62) is made of an elastic material; the arm supporting part (62) comprises a rear section supporting arm (622) and a front section supporting arm (621), wherein the rear section supporting arm (622) and the shielding part (63) are integrally formed, the rear section supporting arm (622) and the front section supporting arm (621) are integrally formed, and the rear section supporting arm (622) and the front section supporting arm (621) are arranged in a staggered mode.

15. A pump cap according to claim 13, wherein: a plurality of reinforcing ribs (64) are arranged on the piston body (4) at the position of the extrusion opening (41) along the circumferential direction, and the reinforcing ribs (64) and the shielding part (63) form limiting and abutting fit.

16. A container comprising a body (9), characterized in that: the pump cover comprises a pump cover body (9) and a pump cover body (9), wherein the pump cover body (9) comprises a connector (91) detachably connected with the pump cover body (1) in a sealing mode according to any one of claims 1 to 15, a discharge hole (92) for pumping materials in the pump cover body (9) is formed in the connector (91), the inner valve body (52) of the pump cover body controls a feed port (53) of an outer valve body (51) to be communicated with or disconnected from the discharge hole (92), a bottom plug (93) is arranged in the pump cover body (9) in a sliding mode along the material extrusion pumping direction, and the bottom plug (93) and the inner wall of the pump cover body (9) form sliding sealing fit.

Technical Field

The application relates to the technical field of daily chemical product packaging, in particular to a pump cover and a container with the same.

Background

At present, common pump formula toothpaste packing in market needs the user to press the toothpaste pump cover to extrude inside toothpaste, compare in traditional toothpaste pipe, pump formula toothpaste packing is favorable to improving the thoroughness that toothpaste was taken, and realizes taking the purpose of toothpaste in an appropriate amount, simplifies toothpaste simultaneously and takes the operation, has better use and experiences.

The pump cover of the pump type toothpaste package needs to be matched with a specially-made toothpaste tube for use, a pipe body valve clack structure needs to be installed at a toothpaste outlet of the toothpaste tube, and correspondingly, a cover body valve clack structure needs to be installed at a toothpaste inlet of the pump cover, so that the pipe body valve clack structure and the cover body valve clack structure are matched to form a one-way valve clack structure; the one-way valve clack structure is used for limiting toothpaste in the pump cover to flow back to the toothpaste tube, and the toothpaste in the toothpaste tube can be pumped into the pump cover through the one-way valve clack structure and then pumped out outwards through the toothpaste outlet of the pump cover or stored in the pump cover for later use.

In addition, the one-way valve clack structure formed by matching the pipe body valve clack structure and the cover body valve clack structure is limited by the self structural strength of the one-way valve clack structure, and the opening angle of the valve clack is limited, so that the paste discharging speed of the valve clack is limited.

In view of the above-mentioned related technologies, the inventor believes that the pump cap on the market at present has the defects of needing to be used with a specific toothpaste tube and slow toothpaste taking speed.

Disclosure of Invention

In order to improve the suitability of toothpaste pump cover, solve toothpaste simultaneously and take the defect that speed is slow, this application provides a pump cover and has the container of this pump cover.

First aspect, this application provides a pump cover, adopts following technical scheme:

a pump cover comprises a shell, wherein the shell is detachably connected with an external container, an extraction cavity is arranged in the shell, a piston body is arranged in the extraction cavity in a sliding manner, a pump nozzle connected with the piston body is arranged in the shell in a sliding manner, a plug body one-way valve is arranged on the piston body, and the pump nozzle is communicated with the extraction cavity through the plug body one-way valve; still be provided with the cavity check valve in the extraction cavity, the extraction cavity is linked together through cavity check valve and external container, the cavity check valve is including setting up the outer valve body in the extraction cavity, offer the feed inlet that is used for being linked together with external container on the outer valve body, just it is provided with and is used for controlling the feed inlet to open or closed interior valve body to slide on the outer valve body.

Through adopting above-mentioned technical scheme, the cavity check valve that utilizes outer valve body and interior valve body to constitute replaces original one-way valve clack structure that comprises body valve clack structure and pump body valve clack structure, constitutes one-way valve clack structure by original body and pump cover cooperation promptly and changes into and install the cavity check valve alone on the pump cover, and the cavity check valve still can play the effect of restriction material from extracting in the cavity backward flow to outside container, can with ordinary toothpaste body structure looks adaptation simultaneously. On this basis, the inner valve body slides on the outer valve body to open or close the feed inlet of the cavity one-way valve, compared with the original valve clack structure, more materials can be circulated in unit time, and therefore the defect that the toothpaste taking speed is low is overcome.

Preferably, a sealing piece is arranged at one end of the extraction chamber communicated with the external container, the outer valve body is arranged in the extraction chamber in a sliding manner, and a puncture part for puncturing the sealing piece is arranged on the outer valve body; the piston body moves under the drive of the pump nozzle and is abutted to drive the outer valve body to slide in the extraction chamber.

By adopting the technical scheme, the closing piece is used for closing one end of the pumping chamber communicated with the external container, and the pump nozzle can close the other end of the pumping chamber, namely the pumping chamber is not contacted with the external environment when not matched with the external container, so that the problem that dust, impurities and the like in the external environment enter the pumping chamber to cause pollution in the subsequent use process can be effectively avoided; when the pump cover is used, the outer valve body of the cavity one-way valve can be driven to slide by matching the pump nozzle and the piston body so as to puncture the closing piece.

Preferably, said outer valve body of the piercing closure forms a snap fit with the extraction chamber.

Through adopting above-mentioned technical scheme, outer valve body sliding motion in the extraction cavity under piston body drive effect, until outer valve body punctures the closure, at this moment, outer valve body and extraction cavity constitute the joint cooperation, and outer valve body is fixed in the extraction cavity.

Preferably, the closure is provided as a thin-walled structure.

By adopting the technical scheme, the sealing piece is limited to be of a thin-wall structure, so that the sealing piece can be conveniently and smoothly punctured by the puncturing part of the outer valve body, meanwhile, the size of an opening formed after the sealing piece is punctured is favorably enlarged to a certain extent, and the circulation per unit time and the circulation smoothness during material extraction are improved.

Preferably, the sealing piece is provided with a groove line which is easy for the puncture part to break the sealing piece.

Through adopting above-mentioned technical scheme, the seting up of recess line, one is favorable to wearing to improve the smooth and easy nature that the puncture action was accomplished, and the other is favorable to enlarging the opening shape and the size that form after wearing to establish, and the unit interval circulation and the smooth and easy nature when further improving the material and extracting.

Preferably, a sleeve is sleeved at one end of the extraction chamber, which is used for being communicated with the external container, a straw is inserted into the sleeve, and the straw extends into the external container which is detachably connected with the shell.

Through adopting above-mentioned technical scheme, utilize sleeve pipe intercommunication extraction cavity and straw, the straw can stretch into to the external container when using in, improves the extraction sufficiency and the utilization ratio of material in the external container.

Preferably, a buffer chamber for communicating the suction pipe with the cavity one-way valve is formed in the sleeve.

Through adopting above-mentioned technical scheme, the buffering cavity that forms in the sleeve pipe had both played buffering material speed, reduced the effect of material impact, played the effect that can extract the material volume in the expansion cavity check valve unit interval simultaneously again.

Preferably, the shell is provided with a limiting part for limiting the sliding and the falling-off of the pump nozzle.

Through adopting above-mentioned technical scheme, spacing portion plays the outside effect of sliding distance and position of restriction pump mouth to avoid the pump mouth to break away from the casing.

Preferably, an opening for installing the piston body in the extraction cavity is formed in one end, close to the pump nozzle, of the extraction cavity, the piston body is in sliding sealing fit with the inner cavity wall of the extraction cavity, and the limiting part is further used for limiting the piston body to be separated from the extraction cavity.

By adopting the technical scheme, when the pump cover is assembled, the piston body can be directly sent into the extraction cavity through the opening, and the opening of the extraction cavity can be closed through the sliding sealing fit of the piston body and the inner wall of the extraction cavity without adding other sealing structures, so that the installation structure is simple and easy to implement.

Preferably, the outer valve wall of the inner valve body is provided with a side channel for rapid material circulation.

By adopting the technical scheme, the side channel is formed in the outer valve wall of the inner valve body, so that the smoothness of the material flowing through the cavity one-way valve is improved, and the material flow in unit time is improved.

Preferably, the pump nozzle is provided with a discharge pipeline, the discharge pipeline is communicated with the extraction cavity through the plug body one-way valve, a cut-off part is arranged in the discharge pipeline in a sliding mode along the pipeline direction, the cut-off part slides under the pushing of materials to open the discharge pipeline and slides under the action of negative pressure to block the discharge pipeline.

Through adopting above-mentioned technical scheme, with the help of the impetus of material and the negative pressure effect in the cavity, the purpose of opening or shutoff ejection of compact pipeline can be realized to the cutting member, and then reaches the purpose of cutting the material, has both played the effect of automatic cutting the material, can play the effect that reduces and cause unnecessary loss because of the material adhesion again.

Preferably, a reset piece is arranged in the shell and used for driving the pump nozzle and the piston body to reset together after being pressed, and the reset piece is arranged to be a spring or an elastic body.

Through adopting above-mentioned technical scheme, the user is after pressing the pump mouth, and the pump mouth can move and reset jointly under the drive that resets with the piston body, and does not need the manual reset of user, has better maneuverability and practicality.

Preferably, an extrusion opening is formed in the piston body, the extrusion opening is communicated with the pump nozzle, and the plug body one-way valve is used for controlling the extrusion opening to be opened or closed; the plug body one-way valve comprises a fixing part fixed on the piston body, a supporting arm part extends towards the direction of the extrusion opening, the supporting arm part is connected with a shielding part, the shielding part is made of elastic materials, and the shielding part seals the extrusion opening; the piston body and the pump nozzle move together and extrude and extract materials in the cavity, and the shielding part is elastically deformed by extrusion of the materials to open the extrusion opening.

Through adopting above-mentioned technical scheme, when carrying out the material and taking the operation, the material roof pressure shielding part in the extraction cavity, the shielding part receives the extrusion to take place elastic deformation and opens the extrusion opening, and after the operation is taken in the completion, the shielding part resets fast and seals the extrusion opening to realize the purpose of one-way circulation.

Preferably, the arm support portion is made of an elastic material; the support arm portion is including the back end support arm with fixed part integrated into one piece and the anterior segment support arm with occlusion part integrated into one piece, back end support arm and anterior segment support arm integrated into one piece, just back end support arm is dislocation set with the anterior segment support arm.

Through adopting above-mentioned technical scheme, the anterior segment support arm that adopts the dislocation set and back end support arm constitute a shank, when carrying out the material and taking the operation, a shank and occlusion part all can take place the elastic deformation of certain degree, are favorable to improving the smooth and easy nature that the material passes through the cock body check valve, can not influence the cock body check valve simultaneously and seal the open-ended closed effect of extrusion.

Preferably, a plurality of reinforcing ribs are arranged on the piston body at the position of the extrusion opening along the circumferential direction, and the reinforcing ribs and the shielding part form limiting abutting fit.

Through adopting above-mentioned technical scheme, the strengthening rib both plays the effect that improves extrusion opening part structural strength, plays restriction occlusion part, support arm portion again and takes place transition deformation's effect.

In a second aspect, the present application provides a container, which adopts the following technical solutions:

a container comprises a container body, wherein the container body comprises a connector which is detachably and hermetically connected with a shell of a pump cover, a discharge hole for pumping out materials in the container body is formed in the connector, the feed hole of an outer valve body is controlled by an inner valve body of the pump cover to be communicated with or disconnected from the discharge hole, a bottom plug is arranged in the container body in a sliding mode along the material extrusion pumping direction, and the bottom plug and the inner wall of the container body form sliding sealing fit.

Through adopting above-mentioned technical scheme, the joint of ware body can constitute with the casing of pump cover and can dismantle sealing connection, and the material in the ware body supplyes the in-process to the extraction cavity, and the bottom plug pushes away the material in the ware body to the extraction cavity under the effect of outside atmospheric pressure in order to realize the quick supplementary operation of material.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the cavity one-way valve formed by the outer valve body and the inner valve body is used for replacing the original one-way valve clack structure formed by the pipe body valve clack structure and the pump body valve clack structure, the cavity one-way valve can still play a role in limiting materials from flowing back from the pumping cavity to an external container, and meanwhile, the cavity one-way valve can be matched with a common toothpaste pipe body structure; on the basis, the inner valve body slides on the outer valve body to open or close the feed inlet of the cavity one-way valve, compared with the original valve clack structure, more materials can flow in unit time, and therefore the defect that the toothpaste taking speed is low is overcome;

2. the sealing piece plays a role in sealing the inner environment of the pump cover, so that the outer environment is prevented from polluting the inner environment of the pump cover, and meanwhile, the cavity one-way valve can pierce the sealing piece under the pressing action of the pump nozzle, so that the pump cover is communicated with an outer container, and the sealing piece has better practicability;

3. the joint of ware body can constitute with the casing of pump cover and can dismantle sealing connection, and the material in the ware body supplyes the in-process to the extraction cavity, and the bottom plug is in the material of propelling movement ware body to the extraction cavity under the effect of outside atmospheric pressure in order to realize the quick supplementary operation of material.

Drawings

FIG. 1 is a schematic view of the internal structure of a pump cap in an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of the pump cap after the closure is pierced according to the embodiment of the present application;

FIG. 3 is a schematic view primarily showing the mounting structure for the resilient member;

FIG. 4 is a schematic view mainly used for showing the structure of the chamber check valve;

FIG. 5 is a schematic view primarily showing the construction of the plug body check valve;

FIG. 6 is a schematic view primarily showing the construction of the reinforcing bars;

fig. 7 is a schematic diagram of a pump cap and container mating structure in an embodiment of the present application.

Description of reference numerals: 1. a housing; 2. a pump nozzle; 21. a first mounting cylinder; 22. a limiting part; 23. a discharge pipeline; 231. cutting off the parts; 3. an extraction chamber; 31. a chamber portion; 32. an installation part; 33. a closure; 4. a piston body; 41. extruding the opening; 42. a second mounting cylinder; 43. a stopper portion; 5. a cavity one-way valve; 51. an outer valve body; 52. an inner valve body; 53. a feed inlet; 54. a puncture section; 55. a side channel; 6. a plug body check valve; 61. a fixed part; 62. a supporting arm part; 621. a front section support arm; 622. a rear-section support arm; 623. twisting the node; 63. a shielding portion; 64. reinforcing ribs; 7. an elastic member; 8. a sleeve; 81. an upper pipe portion; 82. a lower pipe portion; 83. a buffer chamber; 9. a body; 91. a joint; 92. a discharge port; 93. and (7) a bottom plug.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a pump cover.

Referring to fig. 1, a pump cover includes a housing 1, the housing 1 is a hollow column structure, the bottom of the housing 1 is detachably connected to an external container, a pump nozzle 2 is installed at the top of the housing 1, an extraction chamber 3 is installed inside the housing 1, a piston body 4 linked with the pump nozzle 2 is installed in the extraction chamber 3 in a sliding manner, and an extrusion opening 41 communicated with the pump nozzle 2 is formed on the piston body 4. When the shell 1 is connected with an external container, the extraction chamber 3 is communicated with the external container, a user can drive the piston body 4 to move and extrude the material in the extraction chamber 3 by pressing the pump nozzle 2, and the material is pumped out through the extrusion opening 41 on the piston body 4 and the pump nozzle 2 after being extruded, so that the purpose of pumping the material is realized; and when the pump nozzle 2 moves reversely, the piston body 4 in the extraction chamber 3 is driven to move reversely and negative pressure is formed in the extraction chamber 3 so as to pump the material in the outer container into the extraction chamber 3, supplement the loss of the material in the extraction chamber 3 and prepare for taking the material next time.

Referring to fig. 1 and 2, the pumping chamber 3 includes a chamber portion 31 having a hollow cylindrical structure, the chamber portion 31 is vertically disposed in the casing 1, an opening is formed at an upper end of the chamber portion 31 and is communicated with the pump nozzle 2, a sealing member 33 is integrally formed at a lower end of the chamber portion 31, and the sealing member 33 seals the opening at the lower end of the chamber portion 31 when the pump cover is not used, so as to prevent the internal environment of the chamber portion 31 from being polluted by the external environment. The installation part 32 is integrally formed at the middle position of the outer wall of the chamber part 31 in the height direction, the installation part 32 is of a circular ring structure, and the circular ring side of the installation part 32 is clamped on the inner side wall of the shell 1. The piston body 4 can be directly installed in the extraction chamber 3 through the upper end opening of the extraction chamber 3, and the piston body 4 is provided with a plug body check valve 6; also mounted in the extraction chamber 3 at a position intermediate the piston body 4 and the closure member 33 is a cavity one-way valve 5, the cavity one-way valve 5 being adapted to cooperate with the piston body 4 to pierce and break open the closure member 33, such that the extraction chamber 3 is in communication with an external container. The plug body check valve 6 is used for limiting the material in the pump nozzle 2 from flowing back into the chamber part 31, but does not influence the material in the chamber part 31 from flowing back into the pump nozzle 2, and the chamber check valve 5 is used for limiting the material in the chamber part 31 from flowing back into the outer container, but does not influence the material in the outer container from flowing back into the chamber part 31.

Referring to fig. 1 and 2, the pump nozzle 2 is slidably mounted on the top of the housing 1 along the height direction of the housing 1, the pump nozzle 2 extends toward the chamber 31 along the height direction of the housing 1 to form a first mounting cylinder 21, correspondingly, the piston body 4 in the chamber 31 extends along the height direction of the chamber 31 to form a second mounting cylinder 42, the second mounting cylinder 42 extends toward the pump nozzle 2, the first mounting cylinder 21 is coaxially sleeved outside the second mounting cylinder 42, and the first mounting cylinder 21 and the second mounting cylinder 42 form a snap fit, so that the pump nozzle 2 and the piston body 4 in the chamber 31 are communicated through the first mounting cylinder 21 and the second mounting cylinder 42 and form an integral structure. The piston body 4 further comprises a plug part 43 integrally formed by extending the bottom end outer peripheral side wall of the second mounting cylinder 42, and the outer side wall of the plug part 43 and the inner side wall of the chamber part 31 form a sliding sealing fit, so that the piston body 4 can be conveniently mounted and the leakage problem is avoided.

Referring to fig. 1 and 2, a limiting portion 22 for limiting the sliding and releasing of the pump nozzle 2 is integrally formed at the top end of the housing 1, the limiting portion 22 is a circular thin-walled structure formed by extending the circumferential side edge of the top end of the housing 1 towards the inner side, and the limiting portion 22 can form a snap fit with the circumferential side edge of the bottom end of the pump nozzle 2 to limit the pump nozzle 2 to be separated from the housing 1 and limit the piston body 4 connected with the pump nozzle 2 to be separated from the pumping chamber 3.

Referring to fig. 2 and 3, a discharge pipe 23 is formed on the pump nozzle 2, the discharge pipe 23 is communicated with the chamber portion 31 through the first mounting cylinder 21, the plug body check valve 6 and the second mounting cylinder 42, a cutting part 231 is slidably arranged in the discharge pipe 23 along the direction of the pipe, and the cutting part 231 slidably opens the discharge pipe 23 under the pushing of the material and slidably blocks the discharge pipe 23 under the action of negative pressure.

Referring to fig. 1 and 2, the cavity check valve 5 is slidably mounted in the cavity 31, and when the user presses the pump nozzle 2, the pump nozzle 2 moves downward and drives the connected piston body 4 to move downward in the cavity 31, abuts against the cavity check valve 5 and drives the cavity check valve 5 to pierce the closing member 33, so that the pumping cavity 3 is communicated with the external container through the cavity check valve 5. After the puncture action is completed, the user drives the pump nozzle 2 reversely to move and drives the piston body 4 to move upwards and downwards in the chamber part 31, negative pressure is generated in the chamber part 31, the cavity one-way valve 5 is opened under the action of the negative pressure, and the material in the outer container is extracted into the chamber part 31.

Referring to fig. 2 and 3, in the embodiment of the present invention, an elastic member 7 is interposed between the pump nozzle 2 and the mounting portion 32, the elastic member 7 may be a spring or an elastic body, and after a user presses and releases the pump nozzle 2, the pump nozzle 2 and the piston body 4 can be reset under the action of the elastic member 7, so that the operability is good, and the elastic member 7 is coaxially sleeved at the upper end of the cavity portion 31, which is beneficial to improving the stability of the compression movement or the extension movement of the elastic member 7.

Referring to fig. 2 and 4, the chamber check valve 5 includes an outer valve body 51 slidably mounted in the chamber portion 31, a feed port 53 is formed at the bottom end of the outer valve body 51, an inner valve body 52 is slidably mounted on the outer valve body 51, and the inner valve body 52 is slidably mounted along the height direction of the outer valve body 51; when the inner valve body 52 slides to the bottom, the inner valve body 52 can block the feed opening 53 of the outer valve body 51, and when the inner valve body 52 slides upwards, the feed opening 53 is opened, and the material in the outer container can enter the chamber portion 31 through the feed opening 53.

Referring to fig. 2 and 4, a piercing part 54 for piercing the sealing member 33 is formed at the bottom end of the outer valve body 51, the piercing part 54 is in a downward-pointed inverted conical structure, the feed opening 53 is opened on the periphery of the piercing part 54, and correspondingly, the bottom end of the inner valve body 52 is also matched with the shape of the piercing part 54. In the embodiment of the present application, the sealing member 33 is a thin-wall plate structure horizontally plugged at the opening at the lower end of the cavity portion 31, and the thin-wall plate structure and the cavity portion 31 are integrally formed, and groove grains are further formed on the inner side surface and/or the outer side surface of the thin-wall plate structure, and the groove grains are used for improving the smoothness when the sealing member 33 is broken by the puncturing part 54 of the cavity check valve 5, and simultaneously, the opening size of the sealing member 33 after being punctured is improved, thereby avoiding influencing the material flow rate and the flow smoothness in unit time.

Referring to fig. 2 and 4, the outer valve body 51 after the sealing member 33 is punctured forms a stable snap fit with the lower end opening of the chamber portion 31, so as to prevent the cavity check valve 5 from separating from the chamber portion 31; meanwhile, a plurality of side channels 55 are formed on the outer valve wall of the inner valve body 52, and the side channels 55 are used for communicating the chamber part 31 and the feed port 53, so that materials can rapidly flow through the chamber check valve 5 and enter the chamber part 31.

Referring to fig. 2 and 3, in the embodiment of the present invention, a sleeve 8 may be coaxially sleeved at the lower end of the chamber portion 31, the sleeve 8 includes an integrally formed upper tube portion 81 and a lower tube portion 82, wherein the upper tube portion 81 is coaxially sleeved on the cavity of the chamber portion 31 below the mounting portion 32, the upper tube portion 81 and the extending portion of the mounting portion 32 form a snap fit, of course, the upper tube portion 81 may also be mounted and fixed by embedding or bonding, the tube diameter of the lower tube portion 82 is smaller than that of the upper tube portion 81, a buffer chamber 83 is formed between the connecting position of the lower tube portion 82 and the upper tube portion 81 and the sealing member 33 extending into the upper tube portion 81, and the buffer chamber 83 plays a role in slowing down the flow impact velocity of the material and increasing the amount of the material flowing through the one-way valve 5 in the unit time. In actual use, the lower tube 82 is sleeved with a straw which extends into the outer container and is arranged obliquely so as to fully absorb the residual materials in the outer container.

Referring to fig. 2 and 5, the pressing opening 41 is formed in the second mounting cylinder 42 of the piston body 4, and the pressing opening 41 is formed at a position close to the upper end of the second mounting cylinder 42. The above-mentioned plug body check valve 6 is installed in the second installation cylinder 42 at the extrusion opening 41, the plug body check valve 6 is used for closing the extrusion opening 41, but when the piston body 4 slides vertically downwards to move the material in the extrusion chamber part 31, the material can push the plug body check valve 6 open and be pumped outwards through the extrusion opening 41 and the pump nozzle 2. The plug body one-way valve 6 comprises a fixing part 61 connected with the second mounting cylinder 42 of the piston body 4, the fixing part 61 is of an annular structure, three groups of supporting arms 62 are formed by downward extending of the annular bottom surface of the fixing part 61, a shielding part 63 is integrally formed at the bottom end of the three groups of supporting arms 62, the shielding part 63 is of a circular block-shaped structure horizontally arranged, the shielding part 63 completely seals the extrusion opening 41, the supporting arm part 62 and the shielding part 63 are made of elastic materials, and the elastic materials can be rubber, elastic plastic materials and the like. When the piston body 4 and the pump nozzle 2 move together to extrude and extract materials, the materials press the shielding part 63, the support arm part 62 and the shielding part 63 elastically deform, and the extrusion opening 41 is opened to allow the materials to pass through.

Referring to fig. 2 and 5, the arm portion 62 includes a front arm 621 and a rear arm 622 integrally formed, a lower end of the front arm 621 is connected to the circumferential edge of the shielding portion 63, an upper end of the front arm 621 is connected to a lower end of the rear arm 622, and an upper end of the rear arm 622 is connected to the circumferential bottom of the fixing portion 61. It should be noted that the front arm 621 and the rear arm 622 are disposed in a staggered manner, and a twisting node 623 is formed at a molding connection position of the front arm 621 and the rear arm 622, and the front arm 621 is closer to the extrusion opening 41 than the rear arm 622, and meanwhile, the arm thickness of the front arm 621 is smaller than that of the rear arm 622; when the shielding part 63 is pressed by the material, the supporting arm part 62 can be deformed moderately, and the extrusion opening 41 can be opened quickly by matching with the elastic deformation of the shielding part 63, and meanwhile, the sealing performance of the material which is sealed quickly through the extrusion opening 41 and the extrusion opening 41 is balanced.

Referring to fig. 5 and 6, a plurality of ribs 64 are integrally formed in the second mounting tube 42 at the position of the extrusion opening 41 along the circumferential direction of the tube wall, and the ribs 64 and the shielding portion 63 form a limiting abutting fit to correct the possible transitional deformation of the shielding portion 63 and the supporting arm portion 62.

The implementation principle of a pump cover of the embodiment of the application is: when the pump cover and the outer container are used for the first time, a user can firstly assemble the pump cover and the outer container, then press the pump nozzle 2, so that the pump nozzle 2 drives the piston body 4 to move downwards, the piston body 4 moves downwards and drives the cavity one-way valve 5 in the cavity part 31 to puncture the sealing piece 33, and the pump cover and the outer container can also be assembled after the pump nozzle 2 is pressed to puncture the sealing piece 33. After first piercing the closure 33, the user can choose whether to install the cannula 8 and the straw, and after completing the piercing action, the chamber non-return valve 5 is fixed at the bottom end of the chamber portion 31. After the user finishes assembling, the material in the outer container is pumped by pressing the pump nozzle 2; in the process of pumping materials, the pump nozzle 2 drives the piston body 4 to move, when the piston body 4 moves downwards, materials in the cavity part 31 are extruded, the materials extrude and open the plug body one-way valve 6 and are pumped outwards through the pump nozzle 2, when the piston body 4 moves upwards, negative pressure is formed in the cavity part 31, under the action of the negative pressure, the cavity one-way valve 5 is opened, and then the materials in an external container are pumped into the cavity part 31 through the suction pipe, the sleeve 8 and the cavity one-way valve 5, or are directly pumped into the cavity part 31 through the cavity one-way valve 5.

The embodiment of the application also discloses a container.

Referring to fig. 7, a container includes a body 9, the body 9 includes a joint 91 detachably and hermetically connected to a housing 1 of a pump cover in the above embodiment, the connection mode may be a threaded connection or a snap connection, a discharge hole 92 for pumping out materials in the body 9 is formed at the joint 91, a cavity check valve 5, a sleeve 8 and a suction pipe of the pump cover may extend into the body 9 through the discharge hole 92, and the cavity check valve 5 is used for controlling the connection or disconnection between the joint 91 and a cavity portion 31 of the pump cover. A bottom plug 93 is arranged in the machine body 9 in a sliding manner along the direction of pumping out the materials, and the bottom plug 93 and the inner wall of the machine body 9 form sliding sealing fit so as to achieve the purpose of scraping the materials remained on the inner wall of the machine body 9.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.