Valve for pump type container and pump type container

Abstract

The utility model provides a valve for a pump type container and the pump type container, and the valve comprises a valve plate part which is positioned in the annular middle part of an annular mounting part, and the valve plate part is elastically connected with the annular mounting part through an elastic connecting part; in a normal state, the annular mounting part, the elastic connecting part and the valve plate part are all located in the same plane. In the ejection opening state, when the valve plate part is ejected upwards by 2 mm, the elastic force range of the elastic connecting part is 0.5 N to 1.2 N, the corresponding pressure intensity is 0.018 MPa to 0.042 MPa, and the response speed of the valve is increased; by limiting the elasticity of the elastic connecting part and matching with the circular section of the elastic connecting part, for high-viscosity paste, on one hand, the response speed and sealing performance of the valve are improved, on the other hand, turbulent flow of fluid is reduced, resistance of the fluid is reduced, power needed for driving the fluid to flow is reduced, and therefore pressing force is reduced, and the service life of the valve is prolonged. And a user can more easily extrude the paste by using the vacuum pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump formula container technical field, specifically, relate to a valve and pump formula container for pump formula container. BACKGROUND

[0002] There are many manual devices that can pump out fluid in a closed container on the market, and the principle is generally to press the fluid in the closed container. Especially for toothpaste tube, when the toothpaste needs to be squeezed out of the toothpaste tube, the user can press the pump device to pump the toothpaste out of the toothpaste tube.

[0003] A vacuum pump valve device exists in the prior art, which comprises a floating outlet pipe, a floating pipe, an upper piston, a valve and a lower piston. The floating pipe is slidingly installed on the upper piston and can slide between the closed position and the open position; the lower end of the floating pipe is closed, and the lower pipe wall of the floating pipe is provided with a first through hole, which is in communication with the internal passage of the upper piston; the upper piston cooperates with the valve to form a storage bin, and the valve controls the communication or disconnection of the storage bin and the container cavity; the upper piston comprises an upper valve, which controls the communication or disconnection of the internal passage of the upper piston and the storage bin, and the lower piston is movably arranged at the bottom of the container cavity.

[0004] The valve in the prior art has many sharp edges due to the injection molding parts, and when conveying high-viscosity paste, turbulent flow of fluid is easily generated, which increases the flow resistance a lot, so the user needs to apply more driving force to the vacuum pump, which is inconvenient to press, and there is room for improvement. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model aims to provide a valve and pump formula container for pump formula container.

[0006] According to the valve for pump formula container provided by the utility model, the valve piece part is elastically connected with the annular mounting part through the elastic connecting part, the annular mounting part, the elastic connecting part and the valve piece part are located in the same plane in the conventional state, and when the valve piece part is opened upward by 2mm, the elastic force range of the elastic connecting part is 0.5N to 1.2N, and the corresponding pressure is 0.018MPa to 0.042MPa.

[0007] Preferably, the cross section of the elastic connecting part is circular.

[0008] Preferably, the elastic connecting part comprises a first connecting segment, a second connecting segment and a circular-arc connecting segment, one end of the first connecting segment is connected with the inner wall of the annular mounting part, one end of the second connecting segment is connected with the outer wall of the valve piece part, one end of the circular-arc connecting segment is connected with the other end of the first connecting segment, and the other end of the circular-arc connecting segment is connected with the other end of the second connecting segment.

[0009] And the arc shape of the circular-arc connecting segment, the arc shape of the inner wall of the annular mounting part and the arc shape of the outer wall of the valve piece part are all the same.

[0010] Preferably, the first connecting segment and the circular-arc connecting segment, and the second connecting segment and the circular-arc connecting segment are connected through a circular-arc corner.

[0011] Preferably, three elastic connecting parts are arranged between the annular mounting part and the valve piece part, and the three elastic connecting parts are arranged equidistantly along the circumference of the inner wall of the annular mounting part.

[0012] According to the pump container, the closed container body, the shoulder sleeve, the movable pressure head, the paste outlet pipe, the upper piston and the lower piston are further arranged.

[0013] The valve is arranged at the outlet of the closed container body, the lower piston is movably arranged at the bottom of the closed container body, a storage bin is formed between the valve and the upper piston, and the valve controls the storage bin to be communicated with or closed with the closed container body.

[0014] The movable pressure head and the paste outlet pipe are arranged in the shoulder sleeve, the paste outlet pipe is hingedly connected with the movable pressure head, the upper piston is connected with the paste inlet end of the paste outlet pipe, the internal passage of the upper piston is communicated with the paste outlet passage of the paste outlet pipe, the elastic device is arranged between the movable pressure head and the upper piston, the internal passage of the upper piston is communicated with the storage bin through the communication hole, and the upper valve for controlling the communication hole to be opened or closed is arranged in the internal passage of the upper piston.

[0015] Preferably, the valve piece part opens or closes the outlet of the closed container body, and the valve piece part is provided with a sealing ring matched with the outlet of the closed container body.

[0016] Preferably, an embedded flange is arranged on the outer periphery of the annular mounting part, an embedded groove is formed at the outlet of the closed container body, and the embedded flange is embeddedly arranged in the embedded groove.

[0017] Preferably, the structure of the upper valve is the same as or different from that of the valve, and the edges of the parts in the upper piston which are in contact with the paste are all circular.

[0018] Preferably, the valve is made of elastic material.

[0019] Compared with the prior art, the pump container has the following beneficial effects:

[0020] 1、the utility model discloses through the selection of elastic connecting portion elastic material quality, can realize when the valve piece department is opened 2mm to the top, the elastic force range of elastic connecting portion is 0.5N to 1.2N, and the corresponding pressure is 0.018MPa to 0.042MPa, improve the response speed of valve, cooperate the section of elastic connecting portion is circular, and the high viscosity paste is improved the response speed and the leakproofness of valve on one hand, on the other hand reduces the turbulence of fluid, reduces the resistance of fluid, reduces the power needed for driving fluid flow, thereby reduces the pressing force, let the user more easily use vacuum pump to extrude paste. BRIEF DESCRIPTION OF DRAWINGS

[0021] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 It is the axial measurement schematic drawing of the whole structure of valve for the utility model mainly embodies;

[0023] Figure 2 It is the top view of the whole structure of valve for the utility model mainly embodies;

[0024] Figure 3 It is the whole structure schematic diagram of pump type container for the utility model mainly embodies;

[0025] Figure 4 It is the front view of the whole structure of upper valve for the utility model mainly embodies;

[0026] Figure 5 It is the top view of the whole structure of upper valve for the utility model mainly embodies;

[0027] Figure 6 It is the front view of the whole structure of another upper valve for the utility model mainly embodies;

[0028] Figure 7 It is the structure schematic diagram of storage bin for the utility model mainly embodies.

[0029] Reference Signs:

[0030] shoulder sleeve 1 straight line connection section 821

[0031] movable pressure head 2 arc connection section 822

[0032] paste outlet pipe 3 spiral connection section 823

[0033] upper piston 4 valve body part 83

[0034] elastic device 5 closed container body 9

[0035] Storage bin 6 Valve 10

[0036] Communication hole 7 Lower piston 11

[0037] Upper valve 8 Annular mounting portion 12

[0038] Pressure bearing portion 81 Elastic connecting portion 13

[0039] Elastic portion 82 Valve piece portion 14 DETAILED DESCRIPTION

[0040] The utility model will be described in detail below in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0041] Example One

[0042] As Figure 1 and Figure 2 As shown in the utility model provides a valve for pump container, including annular mounting portion 12, elastic connecting portion 13 and valve piece portion 14, valve piece portion 14 is located in the annular middle part of annular mounting portion 12, and valve piece portion 14 is elastically connected with annular mounting portion 12 through elastic connecting portion 13. In the conventional state: annular mounting portion 12, elastic connecting portion 13 and valve piece portion 14 are all located in the same plane. In the top open state: when valve piece portion 14 is opened upward 2mm, the elastic force range of elastic connecting portion 13 is 0.5N to 1.2N, and the corresponding pressure is 0.018MPa to 0.042MPa.

[0043] The valve 10 of the application is circular in overall shape. The annular mounting portion 12 is circular, serving as the mounting basis for the elastic connecting portion 13 and the valve piece portion 14, and is also the annular mounting portion 12 piece of the valve 10, which can be installed in place through the annular mounting portion 12. The valve piece portion 14 opens or closes the outlet of the closed container body 9. The elastic connecting portion 13 connects the annular mounting portion 12 and the valve piece portion 14, providing the valve 10 with a force to restore deformation. The material of the elastic connecting portion 13 itself has a certain elasticity. By selecting the elastic material of the elastic connecting portion 13, when the valve piece portion 14 is opened upward 2mm, the elastic force range of the elastic connecting portion 13 is 0.5N to 1.2N, and the corresponding pressure is 0.018MPa to 0.042MPa. The cross section of the elastic connecting portion 13 is circular, which reduces the turbulence of the fluid, reduces the resistance of the fluid, reduces the power required to drive the fluid flow, thereby reducing the pressing force, making it easier for the user to use the vacuum pump to extrude the paste.

[0044] Further, the edges of the valve 10 in contact with the paste are circular. The elastic connecting part 13 comprises a first connecting section, a second connecting section and a circular arc connecting section, one end of the first connecting section is connected with the inner wall of the annular mounting part 12, one end of the second connecting section is connected with the outer wall of the valve piece part 14, one end of the circular arc connecting section is connected with the other end of the first connecting section, and the other end of the circular arc connecting section is connected with the other end of the second connecting section. The arc shape of the circular arc connecting section, the arc shape of the inner wall of the annular mounting part 12 and the arc shape of the outer wall of the valve piece part 14 are the same. The first connecting section and the circular arc connecting section, and the second connecting section and the circular arc connecting section are connected through a circular arc corner. The cross sections of the first connecting section, the second connecting section, the circular arc connecting section and the circular arc corner are circular.

[0045] Further, the application provides a preferred structure of the valve 10: three elastic connecting parts 13 are arranged between the annular mounting part 12 and the valve piece part 14, and the three elastic connecting parts 13 are arranged at equal intervals along the circumference of the inner wall of the annular mounting part 12.

[0046] It should be noted that the structure of the valve 10 of the application can be used in a single valve pump structure, or can be used as an upper valve and / or a lower valve in a double valve pump structure.

[0047] Example Two

[0048] Based on the first embodiment, the utility model also provides a pump container, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 as shown, further comprising a closed container body 9, a shoulder sleeve 1, a movable pressure head 2, a paste outlet pipe 3, an upper piston 4 and a lower piston 11. The valve 10 is installed at the outlet of the closed container body 9, the lower piston 11 is movably arranged at the bottom of the closed container body 9, the valve 10 and the upper piston 4 form a storage bin 6, and the valve 10 controls the communication or closing of the storage bin 6 and the closed container body 9. The movable pressure head 2 and the paste outlet pipe 3 are arranged in the shoulder sleeve 1, the paste outlet pipe 3 is hinged to the movable pressure head 2, the upper piston 4 is connected to the paste inlet end of the paste outlet pipe 3, the internal passage of the upper piston 4 is communicated with the paste outlet passage of the paste outlet pipe 3, the elastic device 5 is arranged between the movable pressure head 2 and the upper piston 4, the internal passage in the upper piston 4 is communicated with the storage bin 6 through the communication hole 7, and the upper valve 8 arranged in the internal passage of the upper piston 4 controls the opening or closing of the communication hole 7.

[0049] It should be noted that: the fluid with high viscosity, such as toothpaste, when extruded by using pump structure, due to the high viscosity of the paste, a greater pressure is needed to make the paste flow, and extrude from the outlet pipe. And due to the poor flow of the paste, leading to the jet of the paste, the small channel of the paste, the high driving jet pressure of the paste flow, the higher the speed of the jet, the more air mixed in the toothpaste, so that the toothpaste adds a lot of air, leading to the rupture of the paste, affecting the hand feeling and visual effect of the toothpaste extrusion.

[0050] The technical scheme of the present application The upward edges of the components through which the paste passes are all provided with round corners, so as to suppress the turbulent flow of the paste and realize laminar flow, thereby reducing the resistance and the pressing force, and achieving the effect of easy pressing. Further, the present application also enlarges the cross-sectional area of the channel, further reducing the flow resistance of the paste when passing through the channel.

[0051] It should be further explained that: the paste with high viscosity has the following characteristics when flowing: 1. Rotational nature of movement; 2. Mechanical energy loss; 3. Vorticity diffusion; 4. Flow instability.

[0052] The work done on the unit mass force with respect to the paste does not all convert into functional increment, part of which is the work done by viscous force on deformation, which is converted into heat energy, which is lost as mechanical energy. As for the work done by viscous force on flow, it makes the mechanical energy transfer from one layer to another. When the fluid moves, due to the effect of viscosity, a part of the energy is consumed to overcome the viscous resistance, causing energy dissipation. The conventional upper valve 8 has many sharp edges due to the injection molding parts, which can easily produce boundary jet when the paste flows. The boundary jet and the surrounding fluid interpenetrate each other, and the momentum transfer occurs between the fluid masses, forming a free shear layer, and at the same time, the surrounding fluid is continuously rolled into this shear layer, so the width of the jet body increases continuously, and the flow rate of the jet body increases continuously, but the momentum of the jet does not change.

[0053] On the sharp trailing edge of the flow body, the developed boundary layer on the upper and lower surfaces converges into one at the trailing edge and flows downstream to form a wake. Due to the momentum exchange between fluid particles, the minimum velocity of the fluid increases with the flow downstream, and the wake also widens, resulting in the averaging of the velocity. On the trailing edge of the angular blunt body, the fluid and the dead water area behind the blunt body are mutually entrained, forming unstable turbulent vortex. These factors together greatly increase the frictional resistance of the paste. The upward edges of the components through which the paste passes are all provided with round corners, so that the high-viscosity paste only produces a circular end-blunt-body laminar wake when flowing through the internal channel of the upper piston 4, so that the paste only produces a free jet, thereby realizing the uniform flow of the high-viscosity paste, and the proportion of turbulent flow is significantly reduced, thereby reducing the flow resistance of the paste, thereby reducing the pressing force and improving the comfort of use.

[0054] The valve piece 14 opens or closes the outlet of the closed container body 9, and is provided with a sealing ring matched with the outlet of the closed container body 9. The outer periphery of the annular mounting portion 12 is provided with an embedded flange, and the outlet of the closed container body 9 is formed with an embedded groove, and the embedded flange is embeddedly mounted in the embedded groove.

[0055] The structure of the upper valve 8 can be the same as or different from that of the valve 10, and the edges of the parts in the upper piston 4 that are in contact with the paste are all rounded. The materials of the valve 10 and the upper valve 8 are both elastic. The present application provides an upper valve 8 structure different from the structure of the valve 10 in Embodiment I:

[0056] The valve body portion 83 is connected with the paste outlet pipe 3 in sequence, and has an axial through hole. The upward edges of the elastic portion 82 and the valve body portion 83 are both rounded.

[0057] As shown in Figure 2 and Figure 3 , in a feasible embodiment of the present application: the diameter of the valve body portion 83 is smaller than that of the pressure bearing portion 81, the diameter of the valve body portion 83 is larger than that of the communication hole 7 of the upper piston 4, the diameter of the valve body portion 83 is smaller than that of the axial through hole of the valve body portion 83, and the elastic portion 82 includes a straight connecting segment 821 and an arc-shaped connecting segment 822. The arc-shaped connecting segment 822 is located in the same plane as the valve body portion 83, and one end of the arc-shaped connecting segment 822 is connected with the edge of the valve body portion 83. The length direction of the straight connecting segment 821 is parallel to the axial direction of the upper valve 8, one end of the straight connecting segment 821 is connected with the edge of the pressure bearing portion 81, and the other end of the straight connecting segment 821 is connected with the other end of the arc-shaped connecting segment 822. The straight connecting segment 821 and the arc-shaped connecting segment 822 are both spaced apart from each other in multiple groups between the pressure bearing portion 81 and the valve body portion 83. The present application preferably equally spaces three groups of the straight connecting segment 821 and the arc-shaped connecting segment 822 between the pressure bearing portion 81 and the valve body portion 83. By rounding the upward edges of the elastic portion 82 and the valve body portion 83, the turbulent flow of the paste with high viscosity through the internal passage of the upper piston 4 can be inhibited, which helps to reduce the pressing force.

[0058] As shown in Figure 4 and Figure 5As shown, in another possible embodiment of the present application: the diameter of the valve body part 83 is smaller than the diameter of the pressure bearing part 81, the diameter of the valve body part 83 is larger than the diameter of the communication hole 7 of the upper piston 4, and the diameter of the valve body part 83 is smaller than the diameter of the axial through hole of the valve body part 83. The elastic part 82 comprises a helical connecting segment 823. One end of the helical connecting segment 823 is connected with the edge of the pressure bearing part 81, and the other end of the helical connecting segment 823 is connected with the edge of the valve body part 83. A plurality of helical connecting segments 823 are arranged at intervals between the pressure bearing part 81 and the valve body part 83. In the present application, preferably, three helical connecting segments 823 are arranged at equal intervals between the pressure bearing part 81 and the valve body part 83. By setting the upward edges of both the elastic part 82 and the valve body part 83 as rounded corners, the turbulent flow of the high-viscosity paste through the internal passage of the upper piston 4 can be inhibited, which helps to reduce the pressing force. Further, the edge of the valve body part 83 is provided with auxiliary protrusions, and the auxiliary protrusions are arranged at intervals on the edge of the valve body part 83. The upward edge of any auxiliary protrusion is set as a rounded corner.

[0059] In the present delivery device, by pressing the movable pressure head 2, the paste tube 3, the elastic device 5 and the upper piston 4 are driven to press downward, so that the valve body part 83 of the upper valve 8 floats upward, the paste is extruded from the storage chamber 6 between the upper piston 4 and the valve 10, a negative pressure is generated in the storage chamber 6, the movable pressure head 2 is released, the movable pressure head 2 is pushed back to the original position by the elastic device 5, the valve body part 83 of the upper valve 8 is pushed back to the original position by the spring, and the paste tube 3 is closed. The storage chamber 6 between the upper piston 4 and the valve 10 forms a low-pressure space, under the action of atmospheric pressure, the valve 10 is pushed to float upward, the paste between the closed container body 9 and the valve 10 is pushed to float upward, the valve 10 is pushed away, the paste enters the storage chamber 6, and the lower piston 11 moves upward along the closed container body 9.

[0060] It should be noted that the delivery device can be applied to a toothpaste tube structure. The pressing force required for squeezing toothpaste can be greatly reduced from nearly 30 Newton to less than 18 Newton, so that children can easily use the vacuum pump type packaging product, and the user experience is improved.

[0061] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A valve for a pump container, characterized in that The valve comprises a ring-shaped mounting portion, an elastic connecting portion, and a valve plate portion, the valve plate portion is located in the ring-shaped middle portion of the ring-shaped mounting portion, and the valve plate portion is elastically connected with the ring-shaped mounting portion through the elastic connecting portion; In a normal state, the ring-shaped mounting portion, the elastic connecting portion, and the valve plate portion are located in the same plane; In a top-open state, when the valve plate portion is opened upward by 2 mm, the elastic force of the elastic connecting portion ranges from 0.5 N to 1.2 N, and the corresponding pressure ranges from 0.018 MPa to 0.042 MPa.

2. Valve for a pump container according to claim 1, characterized in that The cross section of the elastic connecting portion is circular.

3. The valve for a pump container of claim 1, wherein, The elastic connecting portion comprises a first connecting segment, a second connecting segment, and a circular-arc connecting segment, one end of the first connecting segment is connected with the inner wall of the ring-shaped mounting portion, one end of the second connecting segment is connected with the outer wall of the valve plate portion, one end of the circular-arc connecting segment is connected with the other end of the first connecting segment, and the other end of the circular-arc connecting segment is connected with the other end of the second connecting segment. The arc-shaped trend of the circular-arc connecting segment, the arc-shaped trend of the inner wall of the ring-shaped mounting portion, and the arc-shaped trend of the outer wall of the valve plate portion are all the same.

4. Valve for a pump container according to claim 3, characterized in that The first connecting segment and the circular-arc connecting segment, and the second connecting segment and the circular-arc connecting segment are connected through circular-arc corners.

5. The valve for a pump container of claim 1, wherein, Three elastic connecting portions are arranged between the ring-shaped mounting portion and the valve plate portion, and the three elastic connecting portions are arranged equidistantly along the circumference of the inner wall of the ring-shaped mounting portion.

6. A pump container characterized by The valve for the pump container according to any one of claims 1-5 further comprises a closed container body, a shoulder sleeve, a movable pressure head, a paste outlet pipe, an upper piston, and a lower piston; The valve is arranged at the outlet of the closed container body, the lower piston is movably arranged at the bottom of the closed container body, a storage bin is formed between the valve and the upper piston, and the valve controls the communication or closing of the storage bin with the closed container body; The movable pressure head and the paste outlet pipe are arranged in the shoulder sleeve, the paste outlet pipe is hingedly connected with the movable pressure head, the upper piston is connected at the paste inlet end of the paste outlet pipe, the internal passage of the upper piston is in communication with the paste outlet passage of the paste outlet pipe, an elastic device is arranged between the movable pressure head and the upper piston, the internal passage of the upper piston is in communication with the storage bin through a communication hole, and an upper valve is arranged in the internal passage of the upper piston to control the opening or closing of the communication hole.

7. The pump container of claim 6, wherein The valve plate portion opens or closes the outlet of the closed container body, and the valve plate portion is provided with a sealing ring matched with the outlet of the closed container body.

8. The pump container of claim 6, wherein An embedded flange is arranged at the outer periphery of the ring-shaped mounting portion, an embedded groove is formed at the outlet of the closed container body, and the embedded flange is embeddedly arranged in the embedded groove.

9. The pump container of claim 6, wherein The structure of the upper valve is the same as or different from that of the valve, and the edges of the components in the upper piston that are in contact with the paste are circular.

10. The pump container of claim 6, wherein The valve is made of elastic material.

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