A press pump for ejecting liquid

Abstract

A press pump for rebounding and ejecting liquid comprises a press head, a main column, a secondary column, a piston, a lock cover, a body, a screw thread, a spring, and a one-way valve core. A sliding core sleeve slides with the valve core rod and the lower portion of the liquid guide cavity to open or close a radial liquid guide hole, and the cylindrical valve core is fitted or separated from the annular seat plate. The upper and lower piston bodies slide and seal with the upper and lower cylinder barrels, respectively. The upper end of the upper cylinder barrel is plugged into the circumferential wall plate of the screw thread, and the flange is fitted with the lower end of the circumferential wall plate. The lower piston body and the lower cylinder barrel form a first cavity, and the upper piston body and the upper cylinder barrel form a second cavity. The main column passes through the spring and is connected to the secondary column through the main column hole. The secondary column is inserted into the main column. The sleeve of the press head slides with the guide cavity, and the spring cooperates with the lock cover cavity and the top plate of the press head. The one-way valve core is arranged on the one-way valve seat. The body adopts the design of an upper piston body and a lower piston body, and the body adopts the design of an upper cylinder barrel and a lower cylinder barrel. A liquid discharge device is provided on the press head. The pump has the function of rebounding and ejecting liquid, and is easy to use.

Description

Technical Field

[0001] The present invention relates to a press pump for chemical liquid. Background Art

[0002] The current state of the art, according to Chinese Patent 201420776594.0, describes a vacuum lotion pump comprising a screw thread, a push-button, a locking cover, a body, a main column, a secondary column, a piston, a spring, and a one-way valve located at the lower liquid inlet of the body. The locking cover has a guide tube at its center, a lower-opening annular insertion groove on its lower end surface, and an annular buckle on the inner wall of the outer ring of the annular insertion groove. The body has an annular buckle on its upper outer surface. The main column includes an upper flanged connection and a lower connecting tube. The upper end of the body is inserted into the annular insertion groove, and the annular buckle engages with the annular buckle. The upper end of the secondary column is inserted into the lower connecting tube of the main column, and the upper connection of the main column is plugged into the guide tube of the push-button. The lower end of the spring abuts against the top of the locking cover, and the upper end of the guide tube is inserted into the spring, which engages with the flange. The locking cover is connected to the screw thread. A problem with this device is that, during use, one hand presses the push-button while the other hand holds a makeup base cloth to collect the makeup liquid, making it inconvenient. Summary of the Invention

[0003] The purpose of the present invention is to provide a press pump with rebound function and liquid dispensing function, which has the characteristics of liquid dispensing after the pressing head is pressed and the press pump rebounds and is easy to use.

[0004] The present invention is realized as follows: a press pump for ejecting liquid by rebounding, which is special in that it comprises a press head, a main column, a secondary column, a piston, a lock cover, a body, a screw thread, a spring and a one-way valve core.

[0005] The pressing head includes a pressing plate, a liquid outlet device provided on the pressing plate, a liquid inlet interface surrounding the liquid outlet device, and a sleeve.

[0006] The secondary column includes a liquid guide cavity provided at the upper portion, a radial liquid guide hole provided at the lower end of the liquid guide cavity, a valve core rod provided at the lower end of the liquid guide cavity, a frustum-shaped seat provided at the bottom, and an annular seat plate surrounding the frustum-shaped seat;

[0007] The piston includes a sliding core sleeve, a cylindrical valve core, an annular seat plate, a lower piston body and an upper piston body. The upper end of the sliding core sleeve extends out of the cylindrical valve core and is connected to the cylindrical valve core through radial ribs. There is an axial liquid guide gap between the sliding core sleeve and the cylindrical valve core. The annular seat plate is connected to the upper end of the cylindrical valve core and the lower middle part of the inner cavity of the lower piston body.

[0008] The lock cover comprises a cover body with a lower opening, a cylindrical portion provided on a cover plate of the cover body, and an inverted frustum-shaped sleeve portion.

[0009] The main body includes an upper cylinder, a flange surrounding the open end of the upper cylinder, a lower cylinder, a one-way valve seat and an interface provided at the bottom of the lower cylinder; the diameter of the upper cylinder is larger than that of the lower cylinder;

[0010] The screw thread includes a lock cover cavity provided on the top plate, a main column hole provided on the lock cover cavity and a guide cavity with an upper opening;

[0011] The secondary column passes through the sliding core sleeve, and the sliding core sleeve slides with the valve core rod and the lower part of the liquid guide cavity to open or close the radial liquid guide hole, and the cylindrical valve core is fitted with or separated from the annular seat plate; the upper piston body and the lower piston body are respectively slidably fitted with the upper cylinder barrel and the lower cylinder barrel and sealed, the upper end of the upper cylinder barrel is plugged into the circumferential wall plate of the screw thread, and the flange is fitted with the lower end of the circumferential wall plate; the lower piston body and the lower cylinder barrel constitute the first cavity, and the upper piston body and the upper cylinder barrel constitute the second cavity; the main column passes through the spring and is connected to the secondary column through the main column hole, the secondary column is inserted into the main column, the sleeve of the push head slides with the guide cavity, the spring cooperates with the lock cover cavity and the top plate of the push head; the one-way valve core is arranged on the one-way valve seat.

[0012] The special feature of the aforementioned press pump for ejecting liquid is that the liquid outlet device includes a valve core cavity, a valve stem hole and a spray core provided on the pressing plate.

[0013] The riser consists of a nozzle chip, a valve stem and a head, and the main column consists of a joint cavity and a liquid inlet cavity.

[0014] The spray chip is fitted into the valve core cavity and there is a liquid outlet gap between the spray chip and the valve core cavity in the circumferential direction. The valve stem and the valve stem hole are in clearance, and the head and the pressing plate are in position-limiting cooperation.

[0015] Or the liquid outlet device is provided with a liquid outlet hole on the pressing plate.

[0016] The special feature of the aforementioned press pump for rebounding and ejecting liquid is that: the top plate of the lock cover cavity of the screw thread is provided with a truncated cone sleeve surrounding the main column hole, the upper end of the main column is provided with a circular spring seat plate, the truncated cone sleeve is inserted into the lower end of the spring, and the upper end of the spring cooperates with the circular spring seat plate.

[0017] The special feature of the resilient ejection pump is that the valve core cavity is in the shape of an inverted frustum, and the spray chip is in the shape of an inverted frustum.

[0018] The special feature of the rebound-ejecting liquid-discharging press pump is that the bottom plate of the upper piston body is in the shape of a truncated cone.

[0019] The special feature of the resilient and liquid-discharging press pump is that an air supply hole is provided on the bottom plate of the upper cylinder.

[0020] The special feature of the resilient ejection press pump is that a countersink is provided on the top plate of the screw thread, the locking cover cavity and the countersink are arranged vertically, and the flange is engaged with the countersink.

[0021] The special feature of the rebound-ejecting press pump is that an annular groove surrounding the frustum-shaped seat is provided on the annular seat plate, and the lower end of the cylindrical valve core is engaged with the annular groove.

[0022] The invention discloses a press pump for ejecting liquid upon rebound. The main body adopts the design of upper piston body and lower piston body, upper cylinder barrel and lower cylinder barrel, and a liquid discharge device is arranged on the press head. The pump has the function of ejecting liquid upon rebound upon the press head and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the natural state of the present invention.

[0024] Figure 2 It is a cross-sectional view of the present invention in a pressed state.

[0025] Figure 3 It is one of the three-dimensional exploded views of the present invention.

[0026] Figure 4 This is the second exploded perspective view of the present invention.

[0027] Figure 5 It is a three-dimensional cross-sectional view of the screw thread of the present invention.

[0028] Figure 6 It is a top view of the piston of the present invention.

[0029] Figure 7 yes Figure 6 A-A sectional view.

[0030] Figure 8 yes Figure 6 Middle B-B view. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] like Figure 1 As shown, a press pump for ejecting liquid after rebound comprises a press head 1, a nozzle core 2, a main column 3, a secondary column 4, a piston 5, a lock cover 6, a body 7, a screw thread 8, a spring 9 and a one-way valve core 10.

[0034] The pressing head 1 includes a pressing plate 11, a liquid outlet device provided on the pressing plate 11, a liquid inlet interface 14 surrounding the liquid outlet device, and a sleeve 15. The upper end surface of the pressing plate 11 is provided with a concave cavity to prevent the liquid from overflowing to the outside.

[0035] The liquid outlet device includes a valve core cavity 12, a valve stem hole 13 and a nozzle core 2;

[0036] The riser 2 includes a core 21, a stem 22 and a head 23.

[0037] The main column 3 includes a joint cavity 31 and a liquid inlet cavity 32, and a liquid guide hole is provided on the partition between the joint cavity 31 and the liquid inlet cavity;

[0038] The secondary column 4 includes a liquid guide cavity 41 at the top, a radial liquid guide hole 42 at the bottom of the liquid guide cavity 41, a valve core rod 43 at the bottom of the liquid guide cavity 41, a frustum-shaped seat 44 at the bottom, and an annular seat plate 45 surrounding the frustum-shaped seat 44. At least two radial liquid guide holes 42 are provided and are evenly distributed around the circumference.

[0039] The piston 5 comprises a sliding core sleeve 51, a cylindrical valve core 52, an annular seat plate 53, a lower piston body 54, and an upper piston body 55. The upper end of the sliding core sleeve 51 extends out of the cylindrical valve core 52 and is connected to the cylindrical valve core 52 via radial ribs. An axial liquid-guiding gap is provided between the sliding core sleeve 51 and the cylindrical valve core 52. The annular seat plate 53 is connected to the upper end of the cylindrical valve core 52 and the lower middle portion of the inner cavity of the lower piston body 54. The diameter of the upper piston body 55 is larger than that of the lower piston body 54.

[0040] The locking cover 6 includes a cover body 61 with a lower opening, a cylindrical portion 62 provided on the cover plate of the cover body 61, and an inverted frustum-shaped sleeve portion 63. The cylindrical portion and the inverted frustum-shaped sleeve portion 63 are arranged vertically and on the axis of the locking cover 6; the cylindrical portion 62 and the inverted frustum-shaped sleeve portion 63 are connected;

[0041] The body 7 includes an upper cylinder 71, a flange 72 surrounding the open end of the upper cylinder 71, a lower cylinder 73, a one-way valve seat 74 provided at the bottom of the lower cylinder 73, and an interface 75. The diameter of the upper cylinder 71 is larger than that of the lower cylinder 73.

[0042] The screw thread 8 includes a lock cover cavity 81 provided on the top plate, a main column hole 82 provided on the lock cover cavity 81 and a guide cavity 83 with an upper opening;

[0043] The spray chip 21 is fitted with the valve core cavity 12 and there is a liquid outlet gap between the spray chip 21 and the valve core cavity 12 in the circumferential direction. The valve stem 22 is fitted with the valve stem hole 13, and the head 23 is fitted with the press plate 11 to limit the position. The secondary column 4 passes through the sliding core sleeve 51, and the sliding core sleeve 51 slides with the valve core stem 43 and the lower part of the liquid guide cavity 41 to open or close the radial liquid guide hole 42. The cylindrical valve core 52 is fitted with the annular seat plate 45 for sealing or separation. The upper piston body 55 and the lower piston body 54 are respectively fitted with the upper cylinder 71 and the lower cylinder 73. The upper end of the upper cylinder 71 is inserted into the circumferential wall of the screw thread 8, and the flange is in contact with the lower end of the circumferential wall. The lower piston body 54 and the lower cylinder 73 form a first cavity, while the upper piston body 55 and the upper cylinder 71 form a second cavity. The main column 3 passes through the spring 9 and is connected to the auxiliary column 4 through the main column hole 82. The auxiliary column 4 is inserted into the main column 3. The sleeve of the push head 1 slides in the guide cavity 83. The spring 9 cooperates with the lock cover cavity 81 and the top plate of the push head 1. The one-way valve core 10 is mounted on the one-way valve seat. The sliding core sleeve 52 cooperates with the lower end of the main column 3 to stop.

[0044] The annular seat plate 45 is provided with an annular groove surrounding the frustum-shaped seat 44 , and the lower end of the cylindrical valve core 52 is engaged with the annular groove.

[0045] As a further improvement of the present invention: the top plate of the lock cover cavity 81 of the screw thread 8 is provided with a frustum sleeve 84 surrounding the main column hole 82, and the upper end of the main column 3 is provided with a circular ring spring seat plate 33, the frustum sleeve 84 is inserted into the lower end of the spring 9, and the upper end of the spring 9 cooperates with the circular ring spring seat plate 33.

[0046] As an improvement of the present invention, the valve core cavity 12 is in the shape of an inverted frustum, and the spray chip 21 is in the shape of an inverted frustum.

[0047] The bottom plate of the upper piston body 55 is in the shape of a truncated cone.

[0048] An air supply hole 711 is provided on the bottom plate of the upper cylinder 71 .

[0049] The top plate of the screw thread 8 is provided with a countersunk hole 85 , the locking cover cavity 81 and the countersunk hole 85 are arranged up and down, and the flange 72 is engaged with the countersunk hole 85 .

[0050] Figure 1 This is the natural state of the present invention, or the state after pressing and rebounding.

[0051] When used for the first time, the button 1 is pressed, and the button 1, main column 3, auxiliary column 4 and piston 5 move downward together, and the spring 9 is compressed; the button 1 loses pressure, and under the action of the spring 9, the button 1, main column 3, auxiliary column 4 and piston 5 move upward together; the one-way valve core 10 opens, and the liquid in the cosmetic liquid container enters the first cavity; then the device is in a standby state;

[0052] exist Figure 1In this state, first, the push head 1 is pressed, and the push head 1, main column 3, auxiliary column 4 and piston 5 move downward together, compressing the spring 9; at the same time, the cylindrical valve core 52 and the annular seat plate 45 are switched from a sealed state to a separated state, and the cosmetic liquid in the first cavity flows into the second cavity through the gap between the cylindrical valve core 52 and the annular seat plate 45 and the axial liquid guide gap between the sliding core sleeve 51 and the cylindrical valve core 52, and the sliding core sleeve 51 closes the radial liquid guide hole 42;

[0053] When pressed, air enters the screw thread 8 through the gap between the sleeve 15 and the guide cavity 83, the gap between the truncated cone sleeve 84 and the main column 3, the lock cover 6 and the lock cover cavity 81, and then enters the cosmetic liquid container; the air path is as follows Figure 2 The dotted part.

[0054] Second, the pressing head 1 loses power. Under the action of the spring 9, the pressing head 1, main column 3, auxiliary column 4, and piston 5 move upward together. The cylindrical valve core 52 and the annular seat plate 45 are sealed, and the sliding core sleeve 51 opens the radial liquid guide hole 42. The cosmetic liquid in the second cavity is sprayed out through the radial liquid guide hole 42, the liquid guide cavity 41, the main column 3, and finally the liquid outlet device. At the same time, the cosmetic liquid in the cosmetic liquid container enters the first cavity through the one-way valve core 10. With this structure and action relationship, holding the cosmetic towel and pressing the pressing head 1, releasing the pressing head, and then facing the cosmetic towel to the liquid outlet device can be completed with one hand, which is convenient to use. This overcomes the defect of the existing technology that requires one hand to press and the other hand to hold the cosmetic towel or cloth.

[0055] Third, repeat steps 1 and 2.

[0056] Example 2

[0057] The liquid outlet device is a liquid outlet hole provided on the pressing plate 11 .

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A resilient pump for ejecting liquid, characterized in that: It includes a push button, a main column, a sub-column, a piston, a lock cover, a body, screw threads, a spring and a one-way valve core. The pressing head includes a pressing plate, a liquid outlet device provided on the pressing plate, a liquid inlet interface surrounding the liquid outlet device, and a sleeve. The secondary column includes a liquid guide cavity provided at the upper portion, a radial liquid guide hole provided at the lower end of the liquid guide cavity, a valve core rod provided at the lower end of the liquid guide cavity, a frustum-shaped seat provided at the bottom, and an annular seat plate surrounding the frustum-shaped seat; The piston includes a sliding core sleeve, a cylindrical valve core, an annular seat plate, a lower piston body and an upper piston body. The upper end of the sliding core sleeve extends out of the cylindrical valve core and is connected to the cylindrical valve core through radial ribs. There is an axial liquid guide gap between the sliding core sleeve and the cylindrical valve core. The annular seat plate is connected to the upper end of the cylindrical valve core and the lower middle part of the inner cavity of the lower piston body. The lock cover comprises a cover body with a lower opening, a cylindrical portion provided on a cover plate of the cover body, and an inverted frustum-shaped sleeve portion. The main body includes an upper cylinder, a flange surrounding the open end of the upper cylinder, a lower cylinder, a one-way valve seat and an interface provided at the bottom of the lower cylinder; the diameter of the upper cylinder is larger than that of the lower cylinder; The screw thread includes a lock cover cavity provided on the top plate, a main column hole provided on the lock cover cavity and a guide cavity with an upper opening; The secondary column passes through the sliding core sleeve, and the sliding core sleeve slides with the valve core rod and the lower part of the liquid guide cavity to open or close the radial liquid guide hole, and the cylindrical valve core is fitted with or separated from the annular seat plate; the upper piston body and the lower piston body are respectively slidably fitted with the upper cylinder barrel and the lower cylinder barrel and sealed, the upper end of the upper cylinder barrel is plugged into the circumferential wall plate of the screw thread, and the flange is fitted with the lower end of the circumferential wall plate; the lower piston body and the lower cylinder barrel constitute a first cavity, and the upper piston body and the upper cylinder barrel constitute a second cavity; the main column passes through the spring and is connected to the secondary column through the main column hole, the secondary column is inserted into the main column, the sleeve of the pressing head slides with the guide cavity, and the spring cooperates with the lock cover cavity and the top plate of the pressing head; the one-way valve core is arranged on the one-way valve seat; The liquid outlet device includes a valve core cavity, a valve stem hole and a nozzle core provided on the pressing plate. The riser consists of a nozzle chip, a valve stem and a head, and the main column consists of a joint cavity and a liquid inlet cavity. The spray chip is fitted into the valve core cavity and there is a liquid outlet gap between the spray chip and the valve core cavity in the circumferential direction. The valve stem and the valve stem hole are in clearance, and the head and the pressing plate are in position-limiting cooperation. Or the liquid outlet device is provided with the liquid outlet hole on the pressing plate; The valve core cavity is in the shape of an inverted truncated cone, and the spray chip is in the shape of an inverted truncated cone; The bottom plate of the upper piston body is in a truncated cone shape.

2. The resilient liquid ejecting pump according to claim 1, characterized in that: The top plate of the lock cover cavity of the screw thread is provided with a truncated cone sleeve surrounding the main column hole, the upper end of the main column is provided with an annular spring seat plate, the truncated cone sleeve is inserted into the lower end of the spring, and the upper end of the spring cooperates with the annular spring seat plate.

3. The resilient liquid ejecting pump according to claim 1, characterized in that: An air supply hole is provided on the bottom plate of the upper cylinder.

4. The resilient liquid ejecting pump according to claim 1, characterized in that: The top plate of the screw thread is provided with a countersink, the lock cover cavity and the countersink are arranged up and down, and the flange is embedded in the countersink.

5. A resilient liquid ejecting pump according to any one of claims 1 to 4, characterized in that: The annular seat plate is provided with an annular groove surrounding the frustum-shaped seat, and the lower end of the cylindrical valve core is engaged with the annular groove.

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