Emulsion pump capable of adjusting liquid outlet amount

Abstract

The utility model discloses an emulsion pump capable of flexibly adjusting the liquid outlet amount, which comprises a pump body, a valve rod, a liquid outlet pipe and a liquid pumping pipe, the valve rod is inserted into the pump body to form a containing cavity, and a sealed space is formed under the action of a first plug, a first blocking piece, a second plug and a second blocking piece. And the adjusting piece is arranged on the pump body and is used for adjusting the axial movement space of the valve rod. According to the emulsion pump, under the condition that the interior of the pump body is not changed as a whole, the volume change of the containing cavity formed by the valve rod and the pump body is adjusted and controlled through the adjusting piece, the requirement for adjusting and controlling the maximum output liquid amount of the emulsion pump at a time is met, the convenience of using the emulsion pump by workers is improved, and the working efficiency is improved. The single-time liquid outlet amount of the emulsion pump is accurately and effectively regulated and controlled, the valve rod can be limited to the bottom position of the containing cavity through the regulating part, the valve rod cannot move, the emulsion pump cannot suck and output emulsion, and the emulsion is effectively prevented from leaking.

Description

Technical Field

[0001] The utility model relates to the technical field of lotion pumps, in particular to a lotion pump capable of flexibly adjusting the liquid output. Background Art

[0002] A lotion pump is a device that first sucks liquid into an internal chamber and then sprays out the originally sucked solution by squeezing the chamber. During specific use, the lotion pump head is pressed downward to shrink the inner chamber of the lotion pump and then the liquid in the lotion bottle is sucked in. However, the existing lotion pumps have a fixed chamber size and users are accustomed to reducing the chamber to a minimum state each time they press the lotion pump, so that the maximum liquid output of each press of the lotion pump is fixed. Different users will have different maximum liquid output requirements under different usage environments. The current situation that the lotion pump cannot adjust the single maximum liquid output and the user's needs for different maximum liquid outputs directly affect the user experience. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model provides a lotion pump which can flexibly adjust the liquid output.

[0004] The utility model provides a lotion pump capable of flexibly adjusting the liquid output, comprising a pump body, a valve stem, a liquid output pipe, and a liquid extraction pipe;

[0005] The pump body is provided with a receiving cavity, the valve stem is provided with an axially penetrating through hole, one end of the valve stem is inserted into the liquid outlet pipe and fixed to the liquid outlet pipe, the other end of the valve stem is inserted into the receiving cavity, and the valve stem is slidably sealed and connected in the receiving cavity;

[0006] A first plug that can be displaced along the axial direction of the liquid outlet pipe and a first blocking member that limits the movable area of ​​the first plug are provided in the liquid outlet pipe, and the first plug can be displaced to a first position that blocks the liquid outlet of the valve stem, and the pump body is connected to the liquid extraction pipe so that the receiving chamber and the liquid extraction pipe are connected, and a second plug that can be displaced along the axial direction of the receiving chamber and a second blocking member that limits the movable area of ​​the second plug are provided at the liquid inlet of the receiving chamber, and the second plug can be displaced to a second position that blocks the liquid inlet of the receiving chamber;

[0007] It also includes an adjusting member installed on the pump body and used to adjust the axial movable space of the valve stem.

[0008] As a further optimization of the above scheme, the valve stem is composed of a coaxially arranged first rod body portion, a second rod body portion, and a transition portion that naturally transitions between the first rod body portion and the second rod body portion. The inner diameter of the first rod body portion is smaller than the inner diameter of the second rod body portion. The free end of the first rod body portion is inserted into the liquid outlet pipe, and the free end of the second rod body portion is inserted into the storage cavity and is slidably and sealedly connected to the storage cavity.

[0009] As a further optimization of the above scheme, the adjusting part specifically includes: an adjusting ring body and a lifting ring body. The lifting ring body has an external thread and is coaxially sleeved on the first rod body portion. The adjusting ring body has an internal thread adapted to be installed with the external thread and is rotatably installed on the end wall of the pump body. A guide groove distributed along the axial direction of the lifting ring body is also provided on the inner wall of the lifting ring body. A guide rail portion adapted to be installed with the guide groove extends from the outer wall of the first rod body portion, so that the guide rail portion can slide relatively in the guide groove relative to the axial direction of the lifting ring body.

[0010] As a further optimization of the above scheme, the liquid outlet pipe includes a first straight tube portion that accommodates part of the first rod body portion and a second straight tube portion that is connected to the first straight tube portion and arranged vertically with the first straight tube portion. A pressure plate is installed on the second straight tube portion, and a portion of the tube wall of the lifting ring body close to the second straight tube portion is processed into an extension portion with a cross-section of a fan ring, the guide groove portion is located on the extension portion, and an opening is opened on the pressure plate for axially adapting to the extension portion to pass through.

[0011] As a further optimization of the above solution, the pump body is provided with an annular groove coaxially arranged with the storage cavity, and the annular groove is provided with an internal thread adapted to the external thread of the lotion bottle mouth.

[0012] As a further optimization of the above solution, a return spring is installed in the receiving cavity between the constriction of the pump body close to the liquid extraction tube and the valve stem.

[0013] In the utility model, the proposed lotion pump, while the interior of the pump body remains unchanged as a whole, controls the volume change of the storage chamber formed by the valve stem and the pump body through the adjusting member, thereby meeting the demand for regulating the maximum single output liquid volume of the lotion pump, improving the convenience of the staff in using the lotion pump, and accurately and effectively controlling the single liquid output volume of the lotion pump. The valve stem can also be limited to the bottom position of the storage chamber through the adjusting member, so that the valve stem cannot move, making it impossible for the lotion pump to inhale and output the lotion, and effectively preventing lotion leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a lotion pump that can flexibly adjust the liquid output proposed by the utility model;

[0015] Figure 2 This is a schematic cross-sectional structure diagram of a lotion pump that can flexibly adjust the liquid output volume proposed by the utility model. DETAILED DESCRIPTION

[0016] like Figure 1 As shown, Figure 1 This is a schematic structural diagram of an implementation of a lotion pump capable of flexibly adjusting the liquid output proposed by the utility model.

[0017] Reference Figure 1The utility model provides a lotion pump capable of flexibly adjusting the liquid output, comprising a pump body 1, a valve stem 2, a liquid outlet pipe 3, and a liquid extraction pipe 4;

[0018] The pump body 1 has a receiving chamber 5, the valve stem 2 has an axially penetrating through hole, one end of the valve stem 2 is inserted into the liquid outlet pipe 3 and fixed to the liquid outlet pipe 3, the other end of the valve stem 2 is inserted into the receiving chamber 5, and the valve stem 2 is slidably and sealingly connected in the receiving chamber 5;

[0019] A first plug 6 that can be displaced along the axial direction of the liquid outlet pipe 3 and a first blocking member 7 that limits the movable area of ​​the first plug 6 are provided in the liquid outlet pipe 3. The first plug 6 can be displaced to a first position 8 that blocks the liquid outlet of the valve stem 2. The pump body 1 is connected to the liquid pumping pipe 4 so that the receiving chamber 5 and the liquid pumping pipe 4 are connected. A second plug 9 that can be displaced along the axial direction of the receiving chamber 5 and a second blocking member 10 that limits the movable area of ​​the second plug 9 are provided at the liquid inlet of the receiving chamber 5. The second plug 9 can be displaced to a second position 11 that blocks the liquid inlet of the receiving chamber 5.

[0020] The pump also includes an adjusting member 12 mounted on the pump body 1 for adjusting the axial movable space of the valve stem 2 .

[0021] In the initial stage of use of the lotion pump of this embodiment, the first plug 6 and the second plug 9 are respectively located at the first position 8 (not marked in the figure) and the second position 11 (not marked in the figure) in a one-to-one correspondence, so that the part of the storage cavity 5 between the pump body 1 and the valve stem 2 forms a sealed liquid storage cavity for temporarily storing liquid. In the process of moving the valve stem 2 toward the inside of the pump body 1 to reduce the volume of the liquid storage cavity, a high pressure state is formed in the liquid storage cavity, so that the first plug 6 leaves the first position 8, the second plug 9 is stabilized at the second position 11, and the original medium in the liquid storage cavity is discharged outwardly through the liquid outlet pipe 3. In the process of moving the valve stem 2 toward the outside of the pump body 1 to increase the volume of the liquid storage cavity, a negative pressure state is formed in the liquid storage cavity, so that the second plug 9 leaves the second position 11, the first plug 6 is stabilized at the first position 8, and liquid is sucked into the liquid storage cavity through the liquid extraction pipe 4. Repeating the relative position change of the valve stem 2 and the pump body 1 can achieve repeated operations of liquid discharge from the liquid outlet pipe 3 and liquid suction from the liquid extraction pipe 4;

[0022] In the process of repeating the relative position of the valve stem 2 and the pump body 1, the maximum amount of solution inhaled and discharged each time is equal to the maximum volume of the liquid storage chamber. Therefore, the maximum axial activity space of the valve stem 2 in the pump body 1 is adjusted by the adjusting member 12, thereby realizing the regulation of the maximum volume of the liquid storage chamber and the regulation of the maximum amount of solution inhaled and discharged each time.

[0023] In the present application, the volume change of the liquid storage chamber formed by the valve stem 2 and the pump body 1 is regulated by the regulating member 12 while the interior of the pump body 1 remains generally unchanged, thereby meeting the demand for regulating the maximum single output liquid volume of the lotion pump and improving the convenience of the staff in using the lotion pump.

[0024] In addition, the valve stem 2 can be limited to the bottom position of the receiving chamber 5 by the adjusting member 12, so that the valve stem 2 cannot move, and the lotion pump cannot suck and output the lotion, thereby effectively preventing lotion leakage.

[0025] In this embodiment, the valve stem 2 is composed of a coaxially arranged first rod body portion 21, a second rod body portion 22, and a transition portion 23 that naturally transitions and connects the first rod body portion 21 and the second rod body portion 22. The inner diameter of the first rod body portion 21 is smaller than the inner diameter of the second rod body portion 22. The free end of the first rod body portion 21 is inserted into the liquid outlet pipe 3, and the free end of the second rod body portion 22 is inserted into the storage cavity 5 and is slidingly and sealingly connected to the storage cavity 5. The second rod body portion 22 with a larger diameter can meet the demand for obtaining a larger liquid storage cavity volume per unit height.

[0026] The regulating member 12 specifically includes: an adjusting ring body 13 and a lifting ring body 14. The lifting ring body 14 has an external thread and is coaxially sleeved on the first rod body portion 21. The side wall of the lifting ring body 14 forms an overlapping surface with the transition portion 23, so that the lifting ring body 14 limits the activity space of the valve stem 2. The adjusting ring body 13 has an internal thread that is adapted to be installed with the external thread and is rotatably installed on the end wall of the pump body 1. The inner wall of the lifting ring body 14 is also provided with a guide groove distributed along the axial direction of the lifting ring body 14. A guide rail portion that is adapted to be installed with the guide groove is extended from the outer wall of the first rod body portion 21, so that the guide rail portion can slide relatively in the guide groove relative to the axial direction of the lifting ring body 14.

[0027] When the lotion pump of the present application is used, the adjustment ring body 13 is rotated while the valve stem 2 is manually limited to rotate in the horizontal direction. Under the action of the guide rail portion and the guide groove, and under the action of the thread force between the adjustment ring body 13 and the lifting ring body 14, the relative position of the adjustment ring body 13 and the lifting ring body 14 in the vertical direction is changed. The adjustment ring body 13 is limited in the vertical height position under the action of the pump body 1, thereby realizing the change of the vertical height of the lifting ring body 14.

[0028] Among them, the liquid outlet pipe 3 includes a first straight tube portion 31 that accommodates part of the first rod body portion 21 and a second straight tube portion 32 that connects to the first straight tube portion 31 and is arranged perpendicular to the first straight tube portion 31. A pressure plate 15 is installed on the second straight tube portion 32. The part of the tube wall of the lifting ring body 14 close to the second straight tube portion 32 is processed into an extension portion 16 with a cross-section of a fan ring, so that the extension portion 16 and the second straight tube portion 32 are offset. The guide groove portion is located on the extension portion 16. An opening is provided on the pressure plate 15 for axially adapting to the extension portion 16 to pass through, so that the pressure plate 15 and the extension portion 16 are offset, thereby avoiding collision between the liquid outlet pipe 3 and the adjusting member 12 during pressing the liquid outlet pipe 3 and the pump body 1.

[0029] In addition, the non-threaded side wall of the extension portion 16 may be provided with capacity volume scales with values ​​from small to large from top to bottom. During the adjustment of the height position of the lifting ring body 14, the lower end of the lifting ring body 14 defines the height of the highest position of the transition portion 23, and determines the size of the liquid storage cavity. Therefore, the height position of the highest point of the extension portion 16 can directly reflect the size of the liquid storage cavity volume, providing a numerical reference for the liquid discharge amount of the lotion pump each time, so that customers can directly select the appropriate liquid discharge amount according to their needs when using it, thereby improving the practicality of the device.

[0030] Preferably, the pump body 1 has an annular groove coaxially arranged with the storage chamber 5, and the annular groove is provided with an internal thread adapted to the external thread of the lotion bottle mouth, so as to facilitate the assembly and disassembly of the pump body 1 and the lotion bottle, so that the storage chamber 5 is located in the center of the lotion bottle, thereby improving the overall stability of the lotion bottle and increasing the protection of the valve stem 2 and the storage chamber 5.

[0031] Preferably, a return spring is installed in the storage chamber 5 between the constriction of the pump body 1 near the suction tube 4 and the valve stem 2. The return spring is compressed and increases its own deformation force during the contraction of the liquid storage chamber volume. In the absence of external force, the return spring with deformation force drives the pump body 1 to return to its initial state, so that the volume of the liquid storage chamber is restored to the maximum and a negative pressure state is formed in the liquid storage chamber, so that lotion is sucked in, thereby improving the convenience of using the lotion pump.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lotion pump capable of adjusting the amount of liquid discharged, characterized in that: It comprises a pump body (1), a valve stem (2), a liquid outlet pipe (3), and a liquid extraction pipe (4); The pump body (1) has a receiving chamber (5), the valve stem (2) has an axially penetrating through hole, one end of the valve stem (2) is inserted into the liquid outlet pipe (3) and fixed to the liquid outlet pipe (3), the other end of the valve stem (2) is inserted into the receiving chamber (5), and the valve stem (2) is slidably and sealingly connected in the receiving chamber (5); A first plug (6) which can be displaced along the axial direction of the liquid outlet pipe (3) and a first blocking member (7) which limits the movable area of ​​the first plug (6) are provided in the liquid outlet pipe (3); the first plug (6) can be displaced to a first position (8) which blocks the liquid outlet of the valve stem (2); the pump body (1) is connected to the liquid extraction pipe (4) so ​​that the receiving chamber (5) and the liquid extraction pipe (4) are connected; a second plug (9) which can be displaced along the axial direction of the receiving chamber (5) and a second blocking member (10) which limits the movable area of ​​the second plug (9) are provided at the liquid inlet of the receiving chamber (5); the second plug (9) can be displaced to a second position (11) which blocks the liquid inlet of the receiving chamber (5); It also includes an adjusting member (12) mounted on the pump body (1) and adjusting the axial movable space of the valve stem (2).

2. The lotion pump according to claim 1, characterized in that: The valve stem (2) is composed of a coaxially arranged first rod body portion (21), a second rod body portion (22), and a transition portion (23) that naturally transitions and connects the first rod body portion (21) and the second rod body portion (22); the inner diameter of the first rod body portion (21) is smaller than the inner diameter of the second rod body portion (22); the free end of the first rod body portion (21) is inserted into the liquid outlet pipe (3); and the free end of the second rod body portion (22) is inserted into the receiving cavity (5) and is slidably and sealingly connected to the receiving cavity (5).

3. The lotion pump according to claim 2, characterized in that: The regulating member (12) specifically comprises: an adjusting ring body (13) and a lifting ring body (14); the lifting ring body (14) has an external thread and is coaxially sleeved on the first rod body portion (21); the adjusting ring body (13) has an internal thread adapted to be mounted on the external thread and is rotatably mounted on the end wall of the pump body (1); a guide groove distributed along the axial direction of the lifting ring body (14) is also provided on the inner wall of the lifting ring body (14); a guide rail portion adapted to be mounted on the outer wall of the first rod body portion (21) extends so as to enable the guide rail portion to slide relatively in the guide groove in the axial direction of the lifting ring body (14).

4. The lotion pump according to claim 3, characterized in that: The liquid outlet pipe (3) comprises a first straight pipe portion (31) accommodating part of the first rod body portion (21) and a second straight pipe portion (32) connected to the first straight pipe portion (31) and arranged perpendicularly to the first straight pipe portion (31). A pressing plate (15) is mounted on the second straight pipe portion (32). A portion of the pipe wall of the lifting ring body (14) close to the second straight pipe portion (32) is processed into an extended portion (16) having a fan-shaped cross section. The guide groove portion is located on the extended portion (16). The pressing plate (15) is provided with an opening axially adapted to pass through the extended portion.

5. The lotion pump according to claim 1, characterized in that: The pump body (1) is provided with an annular groove coaxially arranged with the storage cavity (5), and an internal thread adapted to the external thread of the mouth of the lotion bottle is provided in the annular groove.

6. The lotion pump according to claim 1, characterized in that: A return spring is installed in a receiving chamber (5) between a constricted portion of the pump body (1) close to the liquid extraction pipe (4) and the valve stem (2).

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