SELF-LOCKING PUMP DEVICE BASED ON AN ELASTIC PLASTIC PART

Abstract

The invention relates to a self-locking pump device based on an elastic plastic component, comprising a pump body extending into a bottle body. The pump body includes a pump chamber provided with a self-locking cover. The pump body is connected to a locking cover. A pumping component is provided inside the pump chamber. The lower end of the pump chamber includes a check valve. The upper end of the pumping component is connected to a button. An annular elastic plastic component is provided within the pump chamber. A locking mechanism is provided between the button and the self-locking cover. Once the button is rotated from a locked position to an unlocked position, the button can be pressed so that the liquid contained in the bottle body is injected from the button outlet. FIGURE FOR ABRIDGED USE: 2

Description

Title of the invention: SELF-LOCKING PUMP DEVICE BASED ON AN ELASTIC PLASTIC PART Technical field

[0001] This utility certificate relates to the field of self-locking pumps, in particular a self-locking pump device based on an elastic plastic part.

[0002] TECHNICAL CONTEXT

[0003] Emulsion pumps, with their exquisite design and ease of use, have been widely used in the daily chemical and pharmaceutical industries. However, existing emulsion pumps often have many parts with a complex structure, high production difficulty and high production cost; and a metal spring is used in the pumping component of the traditional emulsion pump, which comes into direct contact with the emulsion in the pump chamber, once rusted, such a return spring will cause contamination of the liquid, which is unhygienic; and the button of the existing emulsion pump is often pressed by mistake during use and causes waste or inconvenience to the user.

[0004] DISCLOSURE OF THE UTILITY CERTIFICATE

[0005] To solve the above technical problem, the purpose of this utility certificate is to provide a self-locking pump device based on an elastic plastic part by adopting an annular elastic plastic part, such an annular elastic plastic part can provide, through its own extension and contraction, an elastic force effect to replace traditional metal springs, thus realizing an emulsion pump entirely made of plastic and achieving self-locking by means of a rotary knob in the non-use state.

[0006] To solve the above problem, the technical solution of this utility certificate is as follows: a self-locking pump device based on an elastic plastic part, characterized in that it comprises a pump body extending inside a bottle body; the pump body is provided with a pump chamber; the pump body is connected to a bottle locking cover that can fix the pump body to the bottle body; inside the pump chamber, a pumping component is provided, which can move up and down and pump the liquid contained in the bottle body upwards; the lower end of the pump chamber is provided with a non-return valve that only allows liquid The contents in the bottle body are to be extracted upwards when the pumping component is moved; the upper end of the pumping component is connected to a button which can cause the pumping component to operate; the pump chamber is provided with a self-locking cover to prevent the pumping component from detaching from the pump chamber; an elastic plastic ring is provided in the pump chamber above the check valve, to pull the pumping component back once the pumping component is pressed downwards; and an opening is provided on one side face of the elastic plastic ring.

[0007] In particular, the pumping component includes a pump rod which can pass through the self-locking cover and has a pumping passage, the pump rod is provided with a liquid inlet in communication with the pumping passage and with the pump chamber, the outer side of the pump rod is sheathed with a piston which can slide relative to the pump rod and close the liquid inlet, the lower end of the pump rod is connected to a conical cap which can extend inside the elastic plastic annular piece, the lower end of the pump chamber is conical in shape and the check valve is a pump ball disposed at the lower end of the pump chamber.

[0008] In particular, a projecting upper limiting rib is provided on the pump rod on the upper outer wall of the liquid inlet, a projecting lower limiting ring is provided on the pump rod on the lower outer wall of the liquid inlet, and the piston is positioned between the projecting upper limiting rib and the projecting lower limiting ring.

[0009] In particular, positions in which the button is located include a locking position and an unlocking position; a locking mechanism is provided between the button and the self-locking cover, in order to prevent the button from moving downwards when the button is located in the locking position; once the button rotates from the locking position to the unlocking position, the button can be pressed so that the liquid contained in the bottle body is injected from the button outlet.The locking mechanism includes a protruding positioning rib arranged on the button; the self-locking cover has a platform that can rest against the protruding positioning rib to prevent the button from moving downwards; and the self-locking cover is further provided with a receiving groove to receive the protruding positioning rib when the button rotates to the unlocked position.

[0010] In particular, a limiting portion is provided inside the pump chamber above the check valve, in order to prevent the check valve from detaching and to limit the conical cap from moving downwards.

[0011] In particular, the pump body is further provided with a liquid guide pipe below the non-return valve.

[0012] Compared to existing techniques, the self-locking pump device based on an elastic plastic part according to this utility certificate has the following effects:

[0013] According to this utility certificate, an elastic plastic annular piece is provided in the pump chamber above the check valve, in order to return the pumping component once it has been pressed down. The elastic plastic annular piece has an opening on one side face. When the lower end of the pumping component extends into the elastic plastic annular piece, the opening opens and the entire elastic plastic annular piece is in the open state. When the button is released, the elastic plastic annular piece contracts under the action of its own elastic effect and the opening closes to push the pumping component upwards. The elastic plastic piece replaces the metal spring to achieve an elastic telescopic action.and all parts are made entirely of plastic material, which is energy-efficient and environmentally friendly, and can be directly recycled without disassembly, with high recovery efficiency and a wide range of applications; and the positions in which the button is located include a locking position and an unlocking position; when not in use, the button is locked by turning it, which prevents liquid leakage caused by accidental pressing of the button. DESCRIPTION OF THE FIGURES

[0014] [Fig.1] is a three-dimensional view according to this utility certificate;

[0015] [Fig.2] is seen in cross-section according to this utility certificate;

[0016] [Fig.3] is an exploded view according to this utility certificate;

[0017] [Fig.4] is an enlarged view of A of [Fig.2];

[0018] [Fig.5] is a three-dimensional view of the button according to this utility certificate;

[0019] [Fig.6] is a three-dimensional view of the self-locking cover according to the present utility certificate. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions of this utility certificate will be described clearly and in detail by the following description of embodiments, with reference to the figures, in which the described embodiments are only some embodiments rather than all embodiments, and the forms of implementation of this utility certificate are not limited to these. Based on the embodiments of this utility certificate, all other embodiments achieved by those skilled in the art without creative work must be included within the scope of protection of this utility certificate.

[0021] As shown in Figures 1 to 6, a self-locking pump device based on an elastic plastic part includes a pump body 1 extending inside a bottle body, the pump body 1 is provided with a pump chamber 2, the pump body 1 is connected to a bottle locking cover 3 which can fix the pump body to the bottle body, inside the pump chamber 2, a pumping component 4 is provided, which can move up and down in it and pump the liquid contained in the bottle body upwards, the lower end of the pump chamber 2 is provided with a check valve 5 which only allows the liquid contained in the bottle body to be extracted upwards when the pumping component 4 is moving;the upper end of the pumping component 4 is connected to a button 6 which can cause the pumping component 4 to operate, the pumping chamber 2 is provided with a self-locking cover 7 to prevent the pumping component 4 from detaching from the pumping chamber 2, an elastic plastic ring 8 is provided in the pumping chamber 2 above the check valve 5, in order to bring the pumping component 4 back once the pumping component 4 is pressed down, and an opening 81 is provided on a lateral face of the elastic plastic ring 8;The positions in which button 6 is located include a locking position and an unlocking position. A locking mechanism is provided between button 6 and the self-locking cover 7 to prevent button 6 from moving downwards when it is in the locked position. Once button 6 rotates from the locked position to the unlocked position, button 6 can be pressed so that the liquid contained in the bottle body is injected from the outlet of button 6.

[0022] In this embodiment, the elastic plastic annular piece provides improved elastic force, favoring its own extension and contraction, replaces the metal spring for achieving elastic return, and is energy-efficient and environmentally friendly. The upper end of the elastic plastic annular piece curves inward to cooperate via an inclined plane with the conical structure of the lower end of the pump rod, and an opening 81 is provided on a lateral face of the elastic plastic annular piece, allowing the liquid exiting the check valve to enter the chamber of the pump through the opening, and simultaneously achieve the extension and contraction of the elastic plastic annular piece. According to this utility certificate, an elastic plastic annular piece is provided in the pump chamber to allow the lower end of the pumping component to be inserted and to retract the pumping component. An opening is provided on a lateral face of the elastic plastic annular piece. When the lower end of the pumping component extends into the elastic plastic annular piece, the opening opens and the entire elastic plastic annular piece is in the open state. When the button is released, the elastic plastic annular piece contracts under the action of its own elastic effect and the opening closes to push the pumping component upwards. The elastic plastic piece replaces the metal spring to achieve elastic telescoping.and all parts are made entirely of plastic material, which is energy-efficient and environmentally friendly with a wide range of applications; moreover, because the positions in which the button is located include a locking position and an unlocking position, when not in use, a lock is achieved by turning the button, which prevents liquid leakage caused by unwanted pressure on the button.

[0023] As shown in Figures 1 to 6 and in the present embodiment, the pumping component 4 comprises a pump rod 41 which can pass through the self-locking cover 7 and has a pumping passage 411, the pump rod 41 is provided with a liquid inlet 412 in communication with the pumping passage 411 and with the pump chamber 2, the outer side of the pump rod 41 is sheathed with a piston 42 which can slide relative to the pump rod and close the liquid inlet 412, the lower end of the pump rod 41 is connected to a conical cap 43 which can extend inside the elastic plastic annular piece 8, the cooperation between the conical cap and the elastic plastic annular piece allows the extension and contraction of the elastic plastic annular piece to be achieved, thus facilitating the downward pressing and retraction of the pump rod.

[0024] As shown in Figures 1 to 6 and in this embodiment, the locking mechanism includes a protruding positioning rib 61 disposed on the button 6. The self-locking cover 7 has a platform 71 that can bear against the protruding positioning rib 61 to prevent the button 6 from moving downwards. The self-locking cover 7 is further provided with a receiving groove 72 to receive the protruding positioning rib 61 when the button 6 rotates to the unlocked position. When the positioning rib on the button rotates to the position of the receiving groove in the self-locking cover, the button can be pressed downwards. When the positioning rib on the button rotates to the platform position, the button can be pressed downwards. shape on the self-locking cover, because the platform and the positioning rib lean against each other, the downward pressing of the button is limited, thus achieving a self-locking.

[0025] As shown in Figures 1 to 6 and in the present embodiment, a raised upper limiting rib 413 is provided on the pump rod 41 on the upper outer wall of the liquid inlet 412, a raised lower limiting ring 414 is provided on the pump rod 41 on the lower outer wall of the liquid inlet 412, and the piston 42 is positioned between the raised upper limiting rib 413 and the raised lower limiting ring 414, when the piston is in contact with the raised upper limiting rib 413, the liquid inlet 412 is in the open state, and when the piston is in contact with the raised lower limiting ring 414, the liquid inlet 412 is closed by the piston.

[0026] As shown in Figures 1 to 6 and in the present embodiment, the lower end of the pump chamber 2 is conical in shape and the check valve 5 is a pump ball disposed at the lower end of the pump chamber 2.

[0027] As shown in Figures 1 to 6 and in the present embodiment, a limiting portion 21 is provided inside the pump chamber 2 above the check valve 5, in order to prevent the check valve 5 from detaching and to limit the downward movement of the conical cap 43. The limiting portion can prevent the pump ball from detaching from the lower end of the pump chamber; furthermore, the arrangement of the limiting portion makes it possible to limit the downward pressing distance of the pump rod, so that the conical cap can better cooperate with the annular structure of the elastic plastic annular piece, thus achieving elastic extension and contraction.

[0028] As shown in figures 1 to 6 and in the present embodiment, the pump body 1 is further provided with a liquid guide pipe 9 below the check valve 5.

[0029] The embodiments below are preferred forms of implementation of this utility certificate, and the forms of implementation of this utility certificate are not limited to these. Any modifications, decorations, alterations, combinations, or simplifications that respect the spirit and principles of this utility certificate must be included within the scope of protection of this utility certificate.

Claims

1.

2. Demands Self-locking pump device based on an elastic plastic part, characterized in that it comprises a pump body (1) extending inside a bottle body, the pump body (1) is provided with a pump chamber (2), the pump body (1) is connected to a bottle locking cover (3) which can fix the pump body to the bottle body, inside the pump chamber (2), a pumping component (4) is provided, which can move up and down in it and pump the liquid contained in the bottle body upwards, the lower end of the pump chamber (2) is provided with a non-return valve (5) which only allows the liquid contained in the bottle body to be extracted upwards when the pumping component (4) is moving;the upper end of the pumping component (4) is connected to a button (6) which can cause the pumping component (4) to operate, the pumping chamber (2) is provided with a self-locking cover (7) to prevent the pumping component (4) from detaching from the pumping chamber (2), an elastic plastic ring (8) is provided in the pumping chamber (2) above the check valve (5), in order to return the pumping component (4) once the pumping component (4) is pressed down, and an opening (81) is provided on a lateral face of the elastic plastic ring (8). Self-locking pump device based on an elastic plastic part according to claim 1, characterized in that, the pumping component (4) comprises a pump rod (41) which can pass through the self-locking cover (7) and has a pumping passage (411), the pump rod (41) is provided with a liquid inlet (412) in communication with the pumping passage (411) and with the pump chamber (2), the outer side of the pump rod (41) is sheathed with a piston (42) which can slide relative to the pump rod and close the liquid inlet (412), the lower end of the pump rod (41) is connected to a conical cap (43) which can extend inside the annular elastic plastic part (8); a projecting upper limiting rib (413) is provided on the pump rod (41) on the upper outer wall of the liquid inlet (412), a ring lower limiting protrusion (414) is provided to the pump rod (41) on the lower outer wall of the liquid inlet (412), and the piston (42) is positioned between the upper limiting protrusion rib (413) and the lower limiting protrusion ring (414).

3. Self-locking pump device based on an elastic plastic part according to claim 1, characterized in that, of the positions in which the button (6) is located, comprising a locking position and an unlocking position, a locking mechanism is provided between the button (6) and the self-locking cover (7), in order to prevent the button (6) from moving downwards when the button (6) is located in the locking position, once the button (6) rotates from the locking position to the unlocking position, the button (6) can be pressed so that the liquid contained in the bottle body is injected from the outlet of the button (6).

4. Self-locking pump device based on an elastic plastic part according to claim 3, characterized in that the locking mechanism includes a protruding positioning rib (61) disposed on the button (6), the self-locking cover (7) has a platform (71) which can bear against the protruding positioning rib (61) to prevent the button (6) from moving downwards, and the self-locking cover (7) is further provided with a receiving groove (72) to receive the protruding positioning rib (61) when the button (6) rotates to the unlocking position.

5. Self-locking pump device based on an elastic plastic part according to claim 2, characterized in that the lower end of the pump chamber (2) is conical in shape and the check valve (5) is a pump ball disposed at the lower end of the pump chamber (2).

6. Self-locking pump device based on an elastic plastic part according to claim 2, characterized in that, a limiting portion (21) is provided inside the pump chamber (2) above the check valve (5), in order to prevent the check valve (5) from detaching and to limit the conical cap (43) from moving downwards.

7. A self-locking pump device based on an elastic plastic part according to claim 1, characterized in that the body of pump (1) is further provided with a liquid guide pipe (9) below the non-return valve (5).

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