Piston spring toothpaste pump

Abstract

The present invention relates to a piston spring type toothpaste pump, comprising a button, a discharge pipe, a sealing seat, an elastic member, a discharge barrel, an upper one-way valve and a lower one-way valve; the elastic member is composed of an inner barrel, a first connecting ring, a middle barrel, a second connecting ring, an outer barrel, a limiting ring and a spring, the inner barrel and the middle barrel are connected by the first connecting ring, the middle barrel and the outer barrel are connected by the second connecting ring, the limiting ring and the spring are sleeved on the outer barrel, and the spring is located below the limiting ring; the discharge barrel is open at only one end, the open end of the discharge barrel is inserted between the inner barrel and the middle barrel of the elastic member, the discharge barrel is fixedly connected to the elastic member, and a discharge through hole is provided on the closed end of the discharge barrel; the button is located above the elastic member; the discharge pipe is inserted into the inner barrel of the elastic member, and the two are matched in an interference seal; the sealing seat is located below the discharge barrel, and a feed through hole is provided thereon; the upper and lower one-way valves are respectively installed on the discharge through hole of the discharge barrel and the feed through hole of the sealing seat. The piston spring type toothpaste pump of the present invention has a simple structure and is easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum pumps and relates to a piston spring type toothpaste pump. Background Art

[0002] With the development of society, people's material life has been greatly enriched. People not only pursue product quality, but also put forward higher requirements for product appearance packaging, especially the packaging of daily necessities. Its appearance packaging is not just a simple container, but also must take into account the beautiful shape and convenience of use. The squeeze-type or press-type discharging packaging bottle stands out in the packaging of daily necessities due to its convenience and beautiful shape.

[0003] Patent CN105923281A discloses a self-priming pump-type packaging bottle, which discloses the discharging principle of a general push-type discharging packaging bottle. After the paste is squeezed out from the discharging tube, the outlet at the upper end of the discharging tube is closed by a pressing piece, and the paste hangs on the wall of the discharging tube to block the discharging tube to form a vacuum, so as to facilitate the smooth extrusion of the paste when it is used again. If the paste cannot hang on the wall, the seal cannot be achieved, and the paste will be broken when it is used again, and the material cannot be discharged normally. The pump head of the push-type discharging packaging bottle of the prior art is only a simple discharging tube. Although the structure is simple and the cost is low, when the button is released to close the packaging bottle, the paste will flow downward under the action of gravity. As the use time increases, the seal at the bottom of the discharging tube gradually fails, and the paste cannot be kept in the discharging tube at all. When in use, it needs to be pressed multiple times to ensure the extrusion of the paste, which seriously affects the use effect of the packaging bottle.

[0004] Therefore, it is of great practical significance to develop a piston spring toothpaste pump that can prevent paste backflow and enhance the sealing effect. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide a piston spring type toothpaste pump.

[0006] To achieve the above object, the scheme adopted by the present invention is as follows:

[0007] A piston spring toothpaste pump, comprising a button, a discharge pipe and a sealing seat, and also comprising an elastic member (i.e. a member made entirely of elastic material), a discharge cylinder, an upper one-way valve and a lower one-way valve;

[0008] The elastic member is a stepped cylindrical member, which is composed of an inner tube, a first connecting ring, a middle tube, a second connecting ring, an outer tube, a limiting ring and a spring. Both ends of the inner tube, the middle tube and the outer tube are open. The inner tube is located in the middle tube, and the upper ends of the two are flush and connected to each other through the first connecting ring. The middle tube is located in the outer tube, and the lower end of the middle tube and the upper end of the outer tube are connected to each other through the second connecting ring. The limiting ring and the spring are sleeved on the outer tube, and the spring is located below the limiting ring and is limited by the limiting ring.

[0009] The discharge barrel is open at only one end, the open end of the discharge barrel is inserted between the inner barrel and the middle barrel of the elastic member, the discharge barrel is fixedly connected to the elastic member, and a discharge through hole is provided on the closed end of the discharge barrel;

[0010] The button is located above the elastic member and is used to drive the elastic member to move downward; the discharge pipe is inserted into the inner cylinder of the elastic member, and the two are interference-sealed; the sealing seat is located below the discharge cylinder and is provided with a feed through hole;

[0011] The upper one-way valve is installed on the discharge through hole of the discharge barrel, and is used to one-way connect the spaces on the upper and lower sides of the closed end of the discharge barrel; the lower one-way valve is installed on the feed through hole of the sealing seat, and is used to one-way connect the spaces on the upper and lower sides of the sealing seat; all one-way connections mean that the filler can only flow from bottom to top.

[0012] The action process of the piston spring toothpaste pump of the present invention is as follows: in a natural state, the upper one-way valve and the lower one-way valve are closed, the pipe mouth of the discharge pipe and the discharge through hole of the discharge barrel are sealed by the upper one-way valve, and the feed through hole of the sealing seat is sealed by the lower one-way valve; when a downward force is applied to the key, the elastic member is deformed under the action of the key, driving the discharge barrel to move downward, the pipe mouth of the discharge pipe is opened, the space pressure between the discharge barrel and the sealing seat is increased, the upper one-way valve is opened, and the filling between the discharge barrel and the sealing seat is squeezed out from the discharge through hole of the discharge barrel, and the filling is squeezed out through the discharge pipe and the discharge barrel. The cam is pressed against the bottom of the cylinder and the upper and lower one-way valves are closed, and the pressure in the space between the cylinder and the sealing seat is reduced. The lower one-way valve is opened, and the filler under the sealing seat is squeezed out from the feed hole of the sealing seat and enters the space between the cylinder and the sealing seat. When the pressure in the space on the upper and lower sides of the sealing seat is equal, the lower one-way valve is closed.

[0013] As a preferred solution:

[0014] In the piston spring toothpaste pump as described above, the open end of the discharge barrel is directly inserted between the inner barrel and the middle barrel of the elastic member; the fixed connection structure between the discharge barrel and the elastic member is as follows: an annular protrusion a is provided on the inner and outer walls of the discharge barrel, and an annular groove e is provided on the outer wall of the inner barrel and the inner wall of the middle barrel, and the annular protrusion a is embedded in the annular groove e.

[0015] In the piston spring toothpaste pump as described above, the open end of the discharge barrel is indirectly inserted between the inner barrel and the middle barrel of the elastic member, specifically: an additional barrel is also provided between the inner barrel and the middle barrel of the elastic member, both ends of the additional barrel are open and flush with the upper end of the inner barrel, and the open end of the discharge barrel is inserted between the middle barrel and the additional barrel of the elastic member; the fixed connection structure between the discharge barrel and the elastic member is: an annular protrusion b is provided on the inner and outer walls of the discharge barrel, and an annular groove f is provided on the outer wall of the additional barrel and the inner wall of the middle barrel, and the annular protrusion b is embedded in the annular groove f.

[0016] In the piston spring toothpaste pump as described above, the interference seal fit between the discharge pipe and the inner cylinder of the elastic member is achieved by providing a plurality of annular protrusions c on the inner side wall of the inner cylinder of the elastic member.

[0017] In the piston spring toothpaste pump as described above, the interference seal fit between the discharge pipe and the inner tube of the elastic member is achieved by putting a seal on the discharge pipe. The seal consists of a cylindrical tube and a conical tube. Both ends of the cylindrical tube and the conical tube are open. The upper end of the cylindrical tube is fixedly connected to the discharge pipe, and the lower end is fixedly connected to the small end of the lower end of the conical tube. The large end of the upper end of the conical tube is interference-sealed with the inner side wall of the inner tube.

[0018] As described above, the piston spring toothpaste pump has a fixed connection structure between the upper end of the cylindrical tube and the discharge pipe: a plurality of annular protrusions d are provided on the inner wall of the cylindrical tube, a plurality of annular grooves g are provided on the outer wall of the discharge pipe, and the annular protrusions d are embedded in the annular grooves g.

[0019] The piston spring toothpaste pump as described above further comprises a support cylinder, a piston, a storage cylinder and a third connecting ring;

[0020] The two ends of the support tube are open; the sealing seat is located below the support tube, and the two are fixedly connected; the spring of the elastic member is located inside the support tube;

[0021] The storage barrel is open at both ends; the closed end of the discharge barrel and the part close to the closed end are fixed in the piston through a third connecting ring; the piston is located in the storage barrel and has an interference seal with the storage barrel; the storage barrel is located in the spring of the elastic member; the sealing seat is located below the storage barrel, and the two are fixedly connected.

[0022] The piston spring toothpaste pump as described above, wherein the upper one-way valve and the lower one-way valve are both mushroom nails, or the upper one-way valve and the lower one-way valve are both elastic sealing sheets, or the upper one-way valve and the lower one-way valve are respectively mushroom nails and elastic sealing sheets, or the upper one-way valve and the lower one-way valve are respectively elastic sealing sheets and mushroom nails;

[0023] The mushroom nail is a mushroom-shaped structure, including a cover body and a handle body connected to the cover body. The cover body is an elastic sheet, and the edge will bend toward the n side after receiving the impact force from the m side. The m side and the n side are two opposite sides, and the m side is the side where the handle body is located.

[0024] The elastic sealing sheet is composed of an annular ring, a sealing sheet located in the middle of the annular ring, and a connecting strip connecting the annular ring and the sealing sheet;

[0025] When the upper one-way valve or the lower one-way valve is a mushroom nail, a central through hole and one or more surrounding through holes close to the central through hole are provided on the closed end of the discharge barrel or the sealing seat. The number, distribution method and shape of the surrounding through holes are not limited. For example, the number of surrounding through holes is multiple, and they are evenly distributed around the circumference of the central through hole. The shape of the surrounding through holes is fan-shaped. The surrounding through hole on the closed end of the discharge barrel or the sealing seat is the discharge through hole or the feed through hole. The handle of the mushroom nail is inserted into the central through hole on the closed end of the discharge barrel or the sealing seat, and is fixedly connected to the closed end of the discharge barrel or the sealing seat. The cover of the mushroom nail is located above the closed end of the discharge barrel or the sealing seat, and the lower surface is used to cover and seal the surrounding through holes on the closed end of the discharge barrel or the sealing seat.

[0026] When the upper one-way valve or the lower one-way valve is an elastic sealing sheet, an annular concave step surrounding the discharge through hole or the feed through hole is provided on the closed end of the discharge barrel or the sealing seat, and the annular ring of the elastic sealing sheet is fixed in the annular concave step on the closed end of the discharge barrel or the sealing seat, and the sealing sheet covers the discharge through hole at the closed end of the discharge barrel or the feed through hole of the sealing seat.

[0027] In the piston spring toothpaste pump as described above, when the upper one-way valve is a mushroom nail, the upper surface of the mushroom nail cover is used to cover and seal the pipe opening of the discharge pipe, and is a spherical segment-shaped structure, which is beneficial to ensure that the pipe opening of the discharge pipe is still completely closed when the covering direction of the cover changes.

[0028] As described above, the piston spring toothpaste pump, the mushroom nail cover body has a thickness decreasing from the center to the edge, and the thickness is less than 1 mm; the mushroom nail handle body is composed of a connecting cylinder, a transition cylinder and a cone that are coaxially connected in sequence, the connecting cylinder is connected to the mushroom nail cover body, the diameter of the transition cylinder is larger than the connecting cylinder, and is equal to the bottom diameter of the cone.

[0029] Beneficial effects:

[0030] The piston spring toothpaste pump of the present invention has a simple structure and is easy to use. It can also be applied to other pastes or semi-fluids besides toothpaste, and can prevent the paste from flowing back and enhance the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the piston spring type toothpaste pump of Example 1;

[0032] Figures 2-3 It is a partial structural schematic diagram of the elastic member of the piston spring type toothpaste pump of Example 1;

[0033] Figures 4-5It is a partial structural schematic diagram of the elastic member of the piston spring type toothpaste pump of Example 1;

[0034] Figures 6-7 This is a schematic diagram of the connection structure between the discharge barrel and the piston of the piston spring type toothpaste pump of Example 1;

[0035] Figures 8-9 It is a structural schematic diagram of the upper one-way valve of the piston spring type toothpaste pump of Example 1;

[0036] Figures 10-11 It is a structural schematic diagram of the lower one-way valve of the piston spring type toothpaste pump of Example 1;

[0037] Fig.12 Schematic diagram of the connection structure between the sealing seat and the lower one-way valve of the piston spring toothpaste pump of Example 1;

[0038] Figures 13-14 This is a schematic structural diagram of a button of a piston spring type toothpaste pump according to Example 1;

[0039] Figures 15-16 It is a structural schematic diagram of the housing of the piston spring type toothpaste pump of Example 1;

[0040] Figures 17-18 It is a schematic diagram of the structure of the bottle body of the packaging bottle;

[0041] Figures 19-20 It is a schematic diagram of the structure of the piston in the bottle body of the packaging bottle;

[0042] Figures 21-22 It is a schematic diagram of the structure of the bottle cap of the packaging bottle;

[0043] Figures 23-24 It is a schematic structural diagram of a packaging bottle containing the piston spring type toothpaste pump of Example 1;

[0044] Fig.25 It is a schematic structural diagram of a packaging bottle containing the piston spring type toothpaste pump of Example 2;

[0045] Fig.26 It is a schematic structural diagram of a packaging bottle containing the piston spring type toothpaste pump of Example 3;

[0046] Fig. 27 It is a schematic structural diagram of a packaging bottle containing the piston spring type toothpaste pump of Example 4;

[0047] Among them, 1-button, 2-discharge pipe, 3-sealing seat, 3.1-annular concave step, 4-feeding hole, 5-elastic part, 5.1-inner cylinder, 5.2-first connecting ring, 5.3-middle cylinder, 5.4-second connecting ring, 5.5-outer cylinder, 5.6-limiting ring, 5.7-spring, 6-discharge cylinder, 7-discharge hole, 8-upper one-way valve, 9-lower one-way valve, 10-annular protrusion b, 11-annular groove f, 12-annular protrusion c, 13-support cylinder, 14-shell, 15-piston, 16-storage cylinder, 17-third connecting ring, 18-center through hole, 19-surrounding through hole, 20-cover body, 21-handle body, 21.1-connecting cylinder, 21.2-transition cylinder, 21.3-cone, 22-annular ring, 23-sealing plate, 24-connecting strip. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0049] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Example 1

[0053] Piston spring toothpaste pump, such as Figure 1 As shown, including Figures 15-16 The shell shown in Figures 13-14 The button 1, the discharge pipe 2, the sealing seat 3, the elastic member 5, the discharge cylinder 6, the upper check valve 8 and the lower check valve 9 are shown;

[0054] The elastic member is a stepped cylindrical member, such as Figures 2-3 The inner cylinder 5.1, the first connecting ring 5.2, the middle cylinder 5.3, the second connecting ring 5.4, the outer cylinder 5.5, the limiting ring 5.6 and the like are shown. Figures 4-5 The spring 5.7 shown in the figure is composed of an inner cylinder 5.1, a middle cylinder 5.3 and an outer cylinder 5.5, both ends of which are open. The inner cylinder 5.1 is located in the middle cylinder 5.3, the upper ends of the two are flush, and are connected to each other through a first connecting ring 5.2. The middle cylinder 5.3 is located in the outer cylinder 5.5, and the lower end of the middle cylinder 5.3 and the upper end of the outer cylinder 5.5 are connected to each other through a second connecting ring 5.4. A limiting ring 5.6 and a spring 5.7 are sleeved on the outer cylinder 5.5, and the spring 5.7 is located below the limiting ring 5.6 and is limited by the limiting ring 5.6.

[0055] The discharge barrel 6 is open at only one end, the discharge barrel 6 is fixedly connected to the elastic member 5, and a discharge through hole 7 is provided on the closed end of the discharge barrel 6;

[0056] The open end of the discharge barrel 6 is directly inserted between the inner barrel 5.1 and the middle barrel 5.3 of the elastic member 5; the fixed connection structure of the discharge barrel 6 and the elastic member 5 is as follows: an annular protrusion a is provided on the inner and outer walls of the discharge barrel 6, and an annular groove e is provided on the outer wall of the inner barrel 5.1 and the inner wall of the middle barrel 5.3, and the annular protrusion a is embedded in the annular groove e; or, the open end of the discharge barrel 6 is indirectly inserted between the inner barrel 5.1 and the middle barrel 5.3 of the elastic member 5, specifically: an additional barrel is also provided between the inner barrel 5.1 and the middle barrel 5.3 of the elastic member 5, and both ends of the additional barrel are open and flush with the upper end of the inner barrel 5.1, and the open end of the discharge barrel 6 is inserted between the middle barrel 5.3 and the additional barrel of the elastic member 5; the fixed connection structure of the discharge barrel 6 and the elastic member 5 is as follows: an annular protrusion b 10 is provided on the inner and outer walls of the discharge barrel 6, and an annular groove f is provided on the outer wall of the additional barrel and the inner wall of the middle barrel 5.3 11, the annular protrusion b10 is embedded in the annular groove f 11;

[0057] The button 1 is located above the elastic member 5 and is used to drive the elastic member 5 to move downward; the discharge pipe 2 is inserted into the inner cylinder 5.1 of the elastic member 5, and the two are in interference sealing cooperation, which is specifically achieved by providing a plurality of annular protrusions c 12 on the inner side wall of the inner cylinder 5.1 of the elastic member 5, or by putting a sealing member on the discharge pipe 2, the sealing member is composed of a cylindrical cylinder and a truncated cone cylinder, both ends of the cylindrical cylinder and the truncated cone cylinder are open, the upper end of the cylindrical cylinder is fixedly connected to the discharge pipe 2 (the connection structure is: a plurality of annular protrusions d are provided on the inner side wall of the cylindrical tube, and a plurality of annular grooves g are provided on the outer side wall of the discharge pipe, and the annular protrusions d are embedded in the annular grooves g), the lower end is fixedly connected to the small end of the lower end of the truncated cone cylinder, and the large end of the upper end of the truncated cone cylinder is in interference sealing cooperation with the inner side wall of the inner cylinder 5.1; the sealing seat 3 is located below the discharge cylinder 6, and a feed through hole 4 is provided on it;

[0058] The upper one-way valve 8 is installed on the discharge through hole 7 of the discharge barrel 6, and is used to unidirectionally connect the spaces on the upper and lower sides of the closed end of the discharge barrel 6; the lower one-way valve 9 is installed on the feed through hole 4 of the sealing seat 3, and is used to unidirectionally connect the spaces on the upper and lower sides of the sealing seat 3; all one-way connections mean that the filling can only flow from bottom to top;

[0059] It also includes a support cylinder 13, a piston 15, a storage cylinder 16 and a third connecting ring 17;

[0060] The two ends of the support tube 13 are open; the sealing seat is located below the support tube 13, and the two are fixedly connected; the spring 5.7 of the elastic member is located in the support tube 13;

[0061] The storage barrel 16 has openings at both ends; Figures 6-7 As shown, the closed end of the discharge barrel and the part close to the closed end are fixed in the piston 15 through the third connecting ring 17; the piston 15 is located in the storage barrel 16 and has an interference seal fit with the storage barrel 16; the storage barrel 16 is located in the spring 5.7 of the elastic member; the sealing seat is located below the storage barrel 16, and the two are fixedly connected;

[0062] like Figures 8 to 11 As shown, the upper one-way valve 8 and the lower one-way valve 9 are mushroom nails and elastic sealing sheets 23 respectively;

[0063] The mushroom nail is a mushroom-shaped structure, including a cover body 20 and a handle body 21 connected to the cover body 20. The cover body 20 is an elastic sheet, and the edge will be tilted toward the n side after receiving the impact force from the m side. The m side and the n side are opposite sides, and the m side is the side where the handle body 21 is located.

[0064] The cover 20 of the mushroom nail has a thickness decreasing from the center to the edge, and the thickness is less than 1 mm; the handle 21 of the mushroom nail is composed of a connecting cylinder 21.1, a transition cylinder 21.2 and a cone 21.3 which are coaxially connected in sequence, the connecting cylinder 21.1 is connected to the cover 20 of the mushroom nail, and the diameter of the transition cylinder 21.2 is larger than that of the connecting cylinder 21.1 and equal to the bottom diameter of the cone 21.3;

[0065] The elastic sealing sheet 23 is composed of an annular ring 22, a sealing sheet 23 located in the middle of the annular ring 22, and a connecting strip 24 connecting the annular ring 22 and the sealing sheet 23;

[0066] The closed end of the discharge barrel 6 is provided with a central through hole 18 and one or more surrounding through holes 19 close to the central through hole 18. The surrounding through hole 19 on the closed end of the discharge barrel 6 is the discharge through hole 7. The handle 21 of the mushroom nail is inserted into the central through hole 18 on the closed end of the discharge barrel 6 and is fixedly connected to the closed end of the discharge barrel 6. The cover 20 of the mushroom nail is located above the closed end of the discharge barrel 6. The lower surface is used to cover and seal the surrounding through hole 19 on the closed end of the discharge barrel 6, and the upper surface is used to cover and seal the pipe opening of the discharge pipe 2, and is a spherical segment structure.

[0067] like Fig.12 As shown, the sealing seat 3 is provided with an annular concave step 3.1 surrounding the feed through hole 4, the annular ring 22 of the elastic sealing sheet 23 is fixed in the annular concave step 3.1 on the sealing seat 3, and the sealing sheet 23 covers the feed through hole 4 of the sealing seat 3.

[0068] The action process of the piston spring toothpaste pump of the present invention is as follows: in a natural state, the pipe mouth of the discharge pipe 2 and the discharge hole 7 of the discharge barrel 6 are sealed by the upper and lower surfaces of the cover body 20 of the mushroom nail, and the feed hole 4 of the sealing seat 3 is sealed by the sealing sheet 23 of the elastic sealing sheet 23; when a downward force is applied to the button 1, the elastic member 5 is deformed under the action of the button 1, driving the discharge barrel 6 to move downward, the pipe mouth of the discharge pipe 2 is opened, and at the same time, the space pressure between the discharge barrel 6 and the sealing seat 3 is increased, the edge of the cover body 20 of the mushroom nail is folded upward, the discharge hole 7 of the discharge barrel 6 is opened, and the filling between the discharge barrel 6 and the sealing seat 3 is squeezed out from the discharge hole 7 of the discharge barrel 6, enters the discharge pipe 2 through the cavity surrounded by the discharge pipe 2 and the discharge barrel 6, and is squeezed out from the discharge pipe 2. During this process, the feed hole 4 of the sealing seat 3 is always sealed by the sealing piece 23 of the elastic sealing piece 23; when the force on the button 1 is removed, the elastic member 5 resumes its deformation, driving the discharge barrel 6 to move upward, the button 1 is reset, the cover body 20 of the mushroom nail resumes its deformation, the pipe mouth of the discharge pipe 2 and the discharge hole 7 of the discharge barrel 6 are closed, the space pressure between the discharge barrel 6 and the sealing seat 3 is reduced, the sealing piece 23 of the elastic sealing piece 23 moves to above the feed hole 4, the feed hole 4 of the sealing seat 3 is opened, and the filler under the sealing seat 3 is squeezed out from the feed hole 4 of the sealing seat 3 and enters the space between the discharge barrel 6 and the sealing seat 3. When the space pressure on the upper and lower sides of the sealing seat 3 is equal, the sealing piece 23 of the elastic sealing piece 23 returns to its initial position and re-covers and seals the feed hole 4.

[0069] The piston spring type toothpaste pump of the present invention can be used with Figures 17-18 The bottle shown, Figures 19-20 The piston 15 in the bottle body shown, as Figures 21-22 The bottle cap shown is assembled as Figures 23-24 The filling in the packaging bottle shown is not limited to toothpaste, and other fluids are also applicable.

[0070] The specific application form of the piston spring type toothpaste pump of the present invention is not limited, as long as the piston spring type toothpaste pump of the present invention is used, it is within the protection scope of the present invention.

[0071] Example 2

[0072] The piston spring toothpaste pump is basically the same as the embodiment 1, except that: the lower one-way valve 9 is a mushroom nail, the sealing seat 3 is provided with a central through hole 18 and one or more surrounding through holes 19 close to the central through hole 18, the surrounding through hole 19 on the sealing seat 3 is the feed through hole 4, the handle 21 of the mushroom nail is inserted into the central through hole 18 on the sealing seat 3 and is fixedly connected to the sealing seat 3, the cover 20 of the mushroom nail is located above the sealing seat 3, and the lower surface is used to cover and seal the surrounding through hole 19 on the sealing seat 3. The packaging bottle containing the piston spring toothpaste pump of the present invention is as follows: Fig.25 shown.

[0073] The action process of the piston spring toothpaste pump of the present invention is as follows: in a natural state, the pipe mouth of the discharge pipe 2 and the discharge through hole 7 of the discharge barrel 6 are sealed by the upper and lower surfaces of the cover body 20 of the upper mushroom nail (i.e., the upper one-way valve 8), and the feed through hole 4 of the sealing seat 3 is sealed by the lower surface of the cover body 20 of the lower mushroom nail (i.e., the lower one-way valve 9); when a downward force is applied to the button 1, the elastic member 5 is deformed under the action of the button 1, driving the discharge barrel 6 to move downward, the pipe mouth of the discharge pipe 2 is opened, the space pressure between the discharge barrel 6 and the sealing seat 3 is increased, the edge of the cover body 20 of the mushroom nail of the upper mushroom nail is folded upward, the discharge through hole 7 of the discharge barrel 6 is opened, and the filler between the discharge barrel 6 and the sealing seat 3 is squeezed out from the discharge through hole 7 of the discharge barrel 6, and enters the discharge through the cavity surrounded by the discharge pipe 2 and the discharge barrel 6. When the force on the button 1 is removed, the elastic member 5 recovers its deformation, drives the discharging barrel 6 to move upward, the button 1 is reset, the cover body 20 of the upper mushroom nail recovers its deformation, the pipe mouth of the discharging pipe 2 and the discharging hole 7 of the discharging barrel 6 are closed, the space pressure between the discharging barrel 6 and the sealing seat 3 is reduced, the edge of the cover body 20 of the lower mushroom nail is folded upward, the feeding hole 4 of the sealing seat 3 is opened, and the filler under the sealing seat 3 is squeezed out from the feeding hole 4 of the sealing seat 3 and enters the space between the discharging barrel 6 and the sealing seat 3. When the space pressure on the upper and lower sides of the sealing seat 3 is equal, the cover body 20 of the lower mushroom nail recovers its deformation, and the feeding hole 4 of the sealing seat 3 is closed.

[0074] Example 3

[0075] The piston spring toothpaste pump is basically the same as the embodiment 1, except that: the upper one-way valve 8 and the lower one-way valve 9 are respectively an elastic sealing sheet 23 and a mushroom nail; an annular concave step 3.1 surrounding the discharge through hole 7 is provided on the closed end of the discharge barrel 6, and the annular ring 22 of the elastic sealing sheet 23 is fixed in the annular concave step 3.1 on the closed end of the discharge barrel 6, and the sealing sheet 23 covers the discharge through hole 7 at the closed end of the discharge barrel 6; a central through hole 18 and one or more surrounding through holes 19 close to the central through hole 18 are provided on the sealing seat 3, and the surrounding through hole 19 on the sealing seat 3 is the feed through hole 4, and the handle body 21 of the mushroom nail is inserted into the central through hole 18 on the sealing seat 3 and fixedly connected to the sealing seat 3, and the cover body 20 of the mushroom nail is located above the sealing seat 3, and the lower surface is used to cover and seal the surrounding through hole 19 on the sealing seat 3. The packaging bottle containing the piston spring toothpaste pump of the present invention is as follows: Fig.26 shown.

[0076] The action process of the piston spring toothpaste pump of the present invention is as follows: in the natural state, the upper one-way valve 8 and the lower one-way valve 9 are closed, the pipe mouth of the discharge pipe 2 and the discharge through hole 7 of the discharge barrel 6 are sealed by the sealing piece 23 of the elastic sealing piece 23, and the feed through hole 4 of the sealing seat 3 is sealed by the lower surface of the cover body 20 of the mushroom nail; when a downward force is applied to the button 1, the elastic member 5 is deformed under the action of the button 1, driving the discharge barrel 6 to move downward, the pipe mouth of the discharge pipe 2 is opened, the space pressure between the discharge barrel 6 and the sealing seat 3 is increased, the sealing piece 23 of the elastic sealing piece 23 moves to the top of the discharge through hole 7, the discharge through hole 7 of the discharge barrel 6 is opened, and the filling between the discharge barrel 6 and the sealing seat 3 is squeezed out from the discharge through hole 7 of the discharge barrel 6, and enters the discharge pipe 2 through the cavity surrounded by the discharge pipe 2 and the discharge barrel 6. When the force on the button 1 is removed, the elastic member 5 recovers its deformation, drives the discharging barrel 6 to move upward, the button 1 is reset, and the sealing sheet 23 of the elastic sealing sheet 23 returns to its initial position, re-covering the sealing discharging hole 7 and the pipe mouth of the discharging pipe 2, and the space pressure between the discharging barrel 6 and the sealing seat 3 is reduced. The edge of the cover 20 of the mushroom nail is folded upward, and the feeding hole 4 of the sealing seat 3 is opened. The filler under the sealing seat 3 is squeezed out from the feeding hole 4 of the sealing seat 3 and enters the space between the discharging barrel 6 and the sealing seat 3. When the space pressure on the upper and lower sides of the sealing seat 3 is equal, the cover 20 of the mushroom nail recovers its deformation and the feeding hole 4 of the sealing seat 3 is closed.

[0077] Example 4

[0078] The piston spring toothpaste pump is basically the same as the embodiment 1, except that: the upper one-way valve 8 is an elastic sealing sheet 23, the closed end of the discharge barrel 6 is provided with an annular concave step 3.1 surrounding the discharge through hole 7, the annular ring 22 of the elastic sealing sheet 23 is fixed in the annular concave step 3.1 on the closed end of the discharge barrel 6, and the sealing sheet 23 covers the discharge through hole 7 at the closed end of the discharge barrel 6. The packaging bottle containing the piston spring toothpaste pump of the present invention is as follows Fig. 27 shown.

[0079] The action process of the piston spring toothpaste pump of the present invention is as follows: in the natural state, the pipe mouth of the discharge pipe 2 and the discharge through hole 7 of the discharge barrel 6 are sealed by the sealing piece 23 of the upper elastic sealing piece 23 (i.e., the upper one-way valve 8), and the feed through hole 4 of the sealing seat 3 is sealed by the sealing piece 23 of the lower elastic sealing piece 23 (i.e., the lower one-way valve 9); when a downward force is applied to the button 1, the elastic member 5 is deformed under the action of the button 1, driving the discharge barrel 6 to move downward, the pipe mouth of the discharge pipe 2 is opened, and the spatial pressure between the discharge barrel 6 and the sealing seat 3 is increased, and the sealing piece 23 of the upper elastic sealing piece 23 moves to above the discharge through hole 7, the discharge through hole 7 of the discharge barrel 6 is opened, and the filling between the discharge barrel 6 and the sealing seat 3 is squeezed out from the discharge through hole 7 of the discharge barrel 6, and enters the discharge pipe 2 through the cavity surrounded by the discharge pipe 2 and the discharge barrel 6, and is discharged from the discharge pipe 2. Extrusion, during this process, the feed through hole 4 of the sealing seat 3 is always sealed by the sealing piece 23 of the lower elastic sealing piece 23; when the force on the button 1 is removed, the elastic member 5 recovers its deformation, driving the discharge barrel 6 to move upward, the button 1 is reset, and the sealing piece 23 of the upper elastic sealing piece 23 returns to its initial position, re-covering the sealed discharge through hole 7 and the pipe mouth of the discharge pipe 2, and the space pressure between the discharge barrel 6 and the sealing seat 3 is reduced, and the sealing piece 23 of the lower elastic sealing piece 23 moves to above the feed through hole 4, and the feed through hole 4 of the sealing seat 3 is opened, and the filler under the sealing seat 3 is squeezed out from the feed through hole 4 of the sealing seat 3 and enters the space between the discharge barrel 6 and the sealing seat 3. When the space pressure on the upper and lower sides of the sealing seat 3 is equal, the sealing piece 23 of the lower elastic sealing piece 23 returns to its initial position and re-covers the sealed feed through hole 4 of the sealing seat 3.

Claims

1. A piston spring toothpaste pump, comprising a button, a discharge pipe and a sealing seat, characterized in that: It also includes an elastic member, a discharging cylinder, an upper one-way valve, a lower one-way valve, a piston, a third connecting ring and a storage cylinder; The elastic member is a stepped cylindrical member, which is composed of an inner tube, a first connecting ring, a middle tube, a second connecting ring, an outer tube, a limiting ring and a spring. Both ends of the inner tube, the middle tube and the outer tube are open. The inner tube is located in the middle tube, and the upper ends of the two are flush and connected to each other through the first connecting ring. The middle tube is located in the outer tube, and the lower end of the middle tube and the upper end of the outer tube are connected to each other through the second connecting ring. The limiting ring and the spring are sleeved on the outer tube, and the spring is located below the limiting ring and is limited by the limiting ring. The discharge barrel is open at only one end, the open end of the discharge barrel is inserted between the inner barrel and the middle barrel of the elastic member, the discharge barrel is fixedly connected to the elastic member, and a discharge through hole is provided on the closed end of the discharge barrel; The storage barrel is open at both ends; the closed end of the discharge barrel and the part close to the closed end are fixed in the piston through a third connecting ring; the piston is located in the storage barrel and has an interference seal with the storage barrel; the storage barrel is located in the spring of the elastic member; The button is located above the elastic member and is used to drive the elastic member to move downward; the discharge pipe is inserted into the inner tube of the elastic member, and the two are interference-sealed; the sealing seat is located below the storage tube, and the two are fixedly connected, and a feed through hole is provided on the sealing seat; The upper one-way valve is installed on the discharge through hole of the discharge barrel, and is used to connect the spaces on the upper and lower sides of the closed end of the discharge barrel in one direction; the lower one-way valve is installed on the feed through hole of the sealing seat, and is used to connect the spaces on the upper and lower sides of the sealing seat in one direction; all one-way connections mean that the filling can only flow from bottom to top; The upper one-way valve and the lower one-way valve are both mushroom nails, or both are elastic sealing sheets, or the upper one-way valve and the lower one-way valve are respectively mushroom nails and elastic sealing sheets, or the upper one-way valve and the lower one-way valve are respectively elastic sealing sheets and mushroom nails.

2. The piston spring toothpaste pump according to claim 1, characterized in that: The open end of the discharge barrel is directly inserted between the inner barrel and the middle barrel of the elastic member; the fixed connection structure between the discharge barrel and the elastic member is as follows: an annular protrusion a is provided on the inner and outer walls of the discharge barrel, an annular groove e is provided on the outer wall of the inner barrel and the inner wall of the middle barrel, and the annular protrusion a is embedded in the annular groove e.

3. The piston spring toothpaste pump according to claim 1, characterized in that: The open end of the discharge cylinder is indirectly inserted between the inner cylinder and the middle cylinder of the elastic member, specifically: an additional cylinder is also provided between the inner cylinder and the middle cylinder of the elastic member, both ends of the additional cylinder are open and flush with the upper end of the inner cylinder, and the open end of the discharge cylinder is inserted between the middle cylinder and the additional cylinder of the elastic member; the fixed connection structure between the discharge cylinder and the elastic member is: an annular protrusion b is provided on the inner and outer walls of the discharge cylinder, and an annular groove f is provided on the outer wall of the additional cylinder and the inner wall of the middle cylinder, and the annular protrusion b is embedded in the annular groove f.

4. The piston spring toothpaste pump according to claim 1, characterized in that: The interference seal fit between the discharge pipe and the inner cylinder of the elastic member is achieved by providing a plurality of annular protrusions c on the inner side wall of the inner cylinder of the elastic member.

5. The piston spring toothpaste pump according to claim 1, characterized in that: The interference seal fit between the discharge pipe and the inner tube of the elastic member is achieved by putting a seal on the discharge pipe. The seal consists of a cylindrical tube and a conical tube. Both ends of the cylindrical tube and the conical tube are open. The upper end of the cylindrical tube is fixedly connected to the discharge pipe, and the lower end is fixedly connected to the small end of the lower end of the conical tube. The large end of the upper end of the conical tube is interference sealed with the inner side wall of the inner tube.

6. The piston spring toothpaste pump according to claim 5, characterized in that: The upper end of the cylindrical tube is fixedly connected to the discharge pipe in the following structure: a plurality of annular protrusions d are arranged on the inner wall of the cylindrical tube, a plurality of annular grooves g are arranged on the outer wall of the discharge pipe, and the annular protrusions d are embedded in the annular grooves g.

7. The piston spring toothpaste pump according to any one of claims 1 to 6, characterized in that: Also included is a support cylinder; Both ends of the support tube are open; the sealing seat is located below the support tube, and the two are fixedly connected; the spring of the elastic member is located inside the support tube.

8. The piston spring toothpaste pump according to claim 7, characterized in that: The mushroom nail is a mushroom-shaped structure, including a cover body and a handle body connected to the cover body. The cover body is an elastic sheet, and the edge will bend toward the n side after receiving the impact force from the m side. The m side and the n side are two opposite sides, and the m side is the side where the handle body is located. The elastic sealing sheet is composed of an annular ring, a sealing sheet located in the middle of the annular ring, and a connecting strip connecting the annular ring and the sealing sheet; When the upper one-way valve or the lower one-way valve is a mushroom nail, a central through hole and one or more surrounding through holes close to the central through hole are provided on the closed end of the discharge barrel or the sealing seat, the surrounding through hole on the closed end of the discharge barrel or the sealing seat is the discharge through hole or the feed through hole, the handle of the mushroom nail is inserted into the central through hole on the closed end of the discharge barrel or the sealing seat, and is fixedly connected to the closed end of the discharge barrel or the sealing seat, the cover of the mushroom nail is located above the closed end of the discharge barrel or the sealing seat, and the lower surface is used to cover and seal the surrounding through holes on the closed end of the discharge barrel or the sealing seat; When the upper one-way valve or the lower one-way valve is an elastic sealing sheet, an annular concave step surrounding the discharge through hole or the feed through hole is provided on the closed end of the discharge barrel or the sealing seat, and the annular ring of the elastic sealing sheet is fixed in the annular concave step on the closed end of the discharge barrel or the sealing seat, and the sealing sheet covers the discharge through hole at the closed end of the discharge barrel or the feed through hole of the sealing seat.

9. The piston spring toothpaste pump according to claim 8, characterized in that: When the upper one-way valve is a mushroom nail, the upper surface of the cover body of the mushroom nail is used to cover the pipe opening of the sealed discharge pipe and has a spherical segment structure.

10. The piston spring toothpaste pump according to claim 8, characterized in that: The cover of the mushroom nail has a thickness decreasing from the center to the edge; the handle of the mushroom nail is composed of a connecting cylinder, a transition cylinder and a cone that are coaxially connected in sequence, the connecting cylinder is connected to the cover of the mushroom nail, and the diameter of the transition cylinder is larger than that of the connecting cylinder and equal to the bottom diameter of the cone.

Images