Pressing pump with fixed liquid outlet position

Abstract

The utility model discloses a pressing pump with a fixed liquid outlet position. The pressing pump comprises a pump shell, a liquid outlet piece, a lifting column and a pressing cover. The pump shell is provided with a piston mounting cavity; the liquid outlet piece is arranged on the pump shell and fixed relative to the pump shell in the vertical direction, and the liquid outlet piece is provided with a liquid outlet channel. The lifting column is movably arranged on the pump shell in the vertical direction, the lifting column is provided with a first piston part, the first piston part is movably arranged in the piston mounting cavity and can move up and down, a liquid storage cavity is defined by the first piston part and the piston mounting cavity below the first piston part, and when the lifting column descends relative to the pump shell, the liquid storage cavity can communicate with the liquid outlet channel; when the lifting column ascends relative to the pump shell, the liquid storage cavity can be disconnected from the liquid outlet channel; the pressing cover is arranged on the lifting column and can stretch and retract relative to the lifting column to adjust the position, and when the pressing cover retracts relative to the lifting column, the pump shell abuts against the pressing cover and limits the pressing cover to move downwards. When the pressing cover extends out relative to the lifting column, the pressing cover can drive the lifting column to move downwards relative to the pump shell.

Description

Technical Field

[0001] The utility model relates to the field of press pumps, in particular to a press pump with a fixed liquid outlet position. Background Art

[0002] In common press pumps, since the liquid outlet channel is arranged on the press cover, when the press cover is pressed to discharge the liquid, the position of the squeezed liquid will change with the pressing and lifting position of the press cover, which is not conducive to the user to control the landing point of the liquid after being sprayed out. There is a new type of press pump, including a pump housing, a liquid outlet part, a lifting column and a press cover. The pump housing is provided with a piston mounting cavity and a liquid inlet hole connected to the piston mounting cavity. A one-way valve is arranged between the piston mounting cavity and the liquid inlet hole, and the one-way valve can allow liquid to enter the piston mounting cavity from the liquid inlet hole. The liquid outlet part is fixed to the pump housing vertically, and the liquid outlet part is provided with a liquid outlet channel. The piston part of the lifting column is vertically slidably arranged in the piston mounting cavity. The piston part and the piston mounting cavity below it enclose a liquid storage cavity. The press cover is connected to the lifting column. When the press cover is pressed, the lifting column can be driven to descend and compress the liquid storage cavity, and the liquid in the liquid storage cavity can be squeezed out through the liquid outlet channel. When the press cover rises and resets, the one-way valve can be opened to replenish liquid in the liquid storage cavity. Because the liquid outlet is fixed to the pump housing, the position of the liquid squeezed out when the cover is pressed is also fixed, which makes it convenient for the user to control the landing point of the liquid after it is sprayed out. Usually, the new type of press pump is installed on the liquid storage bottle for storage and transportation. During the process, a collision may occur, causing the cover to be accidentally pressed, resulting in the liquid inside the liquid storage bottle being squeezed out, and taking up more storage space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a press pump with a fixed liquid outlet position, which reduces the risk of accidental squeezing of liquid in the liquid storage bottle through the press pump during storage and transportation, and reduces the storage space occupied.

[0004] According to the embodiment of the utility model, the press pump with a fixed liquid outlet position comprises a pump housing, a liquid outlet part, a lifting column and a press cover. The pump housing is provided with a piston mounting cavity; the liquid outlet part is provided on the pump housing and fixed vertically relative to the pump housing, and the liquid outlet part is provided with a liquid outlet channel; the lifting column is movably provided on the pump housing along the vertical direction, and the lifting column is provided with a first piston part, which is movably provided in the piston mounting cavity and can move up and down, and the first piston part and the piston mounting cavity below it are enclosed to form a liquid storage cavity, and when the lifting column descends relative to the pump housing, the liquid storage cavity can be connected with the liquid outlet channel; when the lifting column rises relative to the pump housing, the liquid storage cavity can be disconnected from the liquid outlet channel; the press cover is provided on the lifting column, and the press cover can be telescopically adjusted relative to the lifting column. When the press cover is retracted relative to the lifting column, the pump housing abuts against the press cover and restricts the downward movement of the press cover; when the press cover is extended relative to the lifting column, the press cover can drive the lifting column to move downward relative to the pump housing.

[0005] The press pump with a fixed liquid outlet position according to the embodiment of the utility model has at least the following beneficial effects: the liquid outlet channel of the liquid outlet piece is fixed in vertical position relative to the pump housing, so that the liquid outlet position of the press pump is relatively fixed; during storage and transportation, the press cover is retracted relative to the lifting column, and the press cover is blocked by the pump housing and cannot be pressed down, thereby reducing the risk of accidental squeezing out of the liquid in the liquid storage bottle through the press pump and reducing the occupied storage space; when the press cover rises and extends relative to the lifting column, the pump cover can be pressed normally to squeeze out the liquid in the liquid storage bottle.

[0006] According to some embodiments of the utility model, one of the push cover and the lifting column is provided with a card block, and the other is provided with a first card slot, a second card slot and a connecting slide slot, the notch of the first card slot is connected with the notch of the second card slot through the connecting slide slot, the second card slot is higher than the first card slot, the card block can be slidably switched between the first card slot and the second card slot through the connecting slide slot, and the push cover is provided with a first stop portion; when the card block is located in the second card slot, the push cover extends relative to the lifting column; when the card block is located in the first card slot, the push cover retracts relative to the lifting column, and the lower side of the first stop portion abuts against the pump housing.

[0007] According to some embodiments of the present invention, the first card slot and the second card slot are arranged at intervals around the central axis of the lifting column, the notch of the first card slot is located at one end thereof close to the second card slot, and the notch of the second card slot is located at one end thereof close to the first card slot.

[0008] According to some embodiments of the present invention, the connecting slot is arranged obliquely relative to the central axis of the lifting column.

[0009] According to some embodiments of the present utility model, the second card slot is arranged on the lifting column, the slot width of the second card slot is smaller than the slot bottom width of the second card slot, the lifting column is provided with an elastic arm, one side of the second card slot is located on the elastic arm, and the slot of the second card slot is located at the end of the elastic arm.

[0010] According to some embodiments of the present invention, the connecting slide groove is arranged on the lifting column, and one end of the connecting slide groove along the length direction penetrates to the outside of the lifting column and forms a clearance opening for the card block to enter the connecting slide groove.

[0011] According to some embodiments of the utility model, the pump housing includes a main housing and a rotating cover, the rotating cover is rotatably disposed on the main housing, the liquid outlet part is rotatably disposed on the main housing, and the rotating cover, the liquid outlet part and the press cover rotate synchronously.

[0012] According to some embodiments of the utility model, the liquid outlet part includes a liquid outlet cover and a nozzle, the nozzle is connected to one side of the liquid outlet cover, the rotating cover is provided with a mounting groove, the bottom wall of the mounting groove is vertically provided with a first clearance hole, the side wall of the mounting groove is provided with a first notch, the press cover is vertically penetrated in the first clearance hole, the press cover is provided with a second clearance hole, the liquid outlet cover is located in the second clearance hole, the hole wall of the second clearance hole is provided with a second notch, the first notch is opposite to the second notch, and the nozzle is penetrated in the first notch and the second notch.

[0013] According to some embodiments of the utility model, the lifting column includes an upper column body, the liquid outlet part is provided with a liquid outlet pipe, the upper column body is provided with a connecting pipe, the liquid outlet pipe and the connecting pipe are sealed and cooperated along the vertical sliding, the connecting pipe forms a connecting channel, the liquid storage chamber is connected with the liquid outlet channel through the connecting channel, and the press cover is connected to the upper column body.

[0014] According to some embodiments of the utility model, the lifting column also includes a lower column, the connecting pipe is provided with a second piston part, the upper end of the lower column is provided with a sealing plug, the upper part of the lower column is passed through the connecting pipe, and the sealing plug is located above the second piston part; the push cover is extended relative to the lifting column, and when the push cover moves downward, the sealing plug can be separated from the second piston part to connect the liquid storage chamber and the connecting channel; when the push cover is extended relative to the lifting column and the push cover moves upward, the sealing plug can contact the second piston part to disconnect the liquid storage chamber and the connecting channel.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a three-dimensional schematic diagram of the pressing pump in a locked state according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the pressing pump in a locked state according to an embodiment of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the pressing pump in the open state according to the embodiment of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of a pressing pump in an open state according to an embodiment of the utility model;

[0021] Figure 5 It is an exploded schematic diagram of a part of the structure of the pressing pump according to an embodiment of the utility model;

[0022] Figure 6 It is a front view schematic diagram of a partial structure of a pressing pump according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] Pump housing 100, main housing 110, limiting portion 111, rotating cover 120, first notch 121;

[0025] Liquid outlet part 200, liquid outlet channel 201, liquid outlet cover 210, nozzle 220, liquid outlet pipe 230;

[0026] Lifting column 300, upper column 310, first piston part 311, first clamping groove 312, second clamping groove 313, connecting slide groove 314, elastic arm 315, yielding opening 316, connecting pipe 317, connecting channel 318, second piston part 319, lower column 320, sealing plug 321, second stopper 322;

[0027] Liquid storage chamber 400;

[0028] A press cover 500, a clamping block 510, a first stopper 520, and a second notch 530;

[0029] A first one-way valve 600;

[0030] Spring 700. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the 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.

[0033] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In common press pumps, since the liquid outlet channel 201 is arranged on the press cover 500, when the press cover 500 is pressed to discharge liquid, the position of the squeezed liquid will change with the pressing and lifting position of the press cover 500, which is not conducive to the user to control the landing point of the liquid after being sprayed out. There is a new type of press pump, including a pump housing 100, a liquid outlet part 200, a lifting column 300 and a press cover 500. The pump housing 100 is provided with a piston mounting cavity and a liquid inlet hole connected to the piston mounting cavity. A one-way valve is arranged between the piston mounting cavity and the liquid inlet hole. The one-way valve can allow liquid to enter the piston mounting cavity from the liquid inlet hole. The liquid outlet part 200 is fixed to the pump housing 100 vertically, and the liquid outlet part 200 is provided with a liquid outlet channel 201. The piston part of the lifting column 300 is slidably arranged in the piston mounting cavity vertically, and the piston part and the piston mounting cavity below it enclose a liquid storage cavity 400. The pressing cover 500 is connected to the lifting column 300. When the pressing cover 500 is pressed, the lifting column 300 can be driven to descend and compress the liquid storage cavity 400, and the liquid in the liquid storage cavity 400 can be squeezed out through the liquid outlet channel 201. When the pressing cover 500 rises and resets, the one-way valve can be opened to replenish the liquid in the liquid storage cavity 400. Since the liquid outlet part 200 is fixed to the pump housing 100, the position of the liquid squeezed out when the pressing cover 500 is pressed is also fixed, which is convenient for the user to control the landing point of the liquid after being sprayed out. Usually, the above-mentioned new type of press pump is installed on the liquid storage bottle for storage and transportation together. During the process, a collision may occur, causing the pressing cover 500 to be accidentally pressed, resulting in the liquid inside the liquid storage bottle being squeezed out, and occupying more storage space.

[0036] Reference Figures 1 to 6 , is a press pump with a fixed liquid outlet position according to an embodiment of the utility model, comprising a pump housing 100, a liquid outlet part 200, a lifting column 300 and a pressing cover 500. The pump housing 100 is provided with a piston mounting chamber; the liquid outlet part 200 is arranged on the pump housing 100 and is fixed vertically relative to the pump housing 100, and the liquid outlet part 200 is provided with a liquid outlet channel 201; the lifting column 300 is movably arranged on the pump housing 100 along the vertical direction, and the lifting column 300 is provided with a first piston part 311, which is movably arranged in the piston mounting chamber and can move up and down, and the first piston part 311 and the piston mounting chamber below it are enclosed to form a liquid storage chamber 400, and when the lifting column 300 descends relative to the pump housing 100, the liquid storage chamber 400 is formed. The liquid chamber 400 can be connected with the liquid outlet channel 201; when the lifting column 300 rises relative to the pump housing 100, the liquid storage chamber 400 can be disconnected from the liquid outlet channel 201; the press cover 500 is arranged on the lifting column 300, and the press cover 500 can be telescopically adjusted relative to the lifting column 300. When the press cover 500 is retracted relative to the lifting column 300, the pump housing 100 abuts against the press cover 500 and restricts the press cover 500 from moving downward; when the press cover 500 is extended relative to the lifting column 300, the press cover 500 can drive the lifting column 300 to move downward relative to the pump housing 100.

[0037] The liquid outlet channel 201 of the liquid outlet part 200 is fixed in a vertical position relative to the pump housing 100, so that the liquid outlet position of the pressing pump is relatively fixed; during storage and transportation, the pressing cover 500 is retracted relative to the lifting column 300, and the pressing cover 500 is blocked by the pump housing 100 and cannot be pressed down, thereby reducing the risk of accidental squeezing out of the liquid in the liquid storage bottle through the pressing pump and reducing the occupied storage space; when the pressing cover 500 rises and extends relative to the lifting column 300, the pump cover can be pressed normally to squeeze out the liquid in the liquid storage bottle for normal use.

[0038] Specifically, when the push cover 500 is retracted relative to the lifting column 300, the push cover 500 is in a locked state, and when the push cover 500 is extended relative to the lifting column 300, the push cover 500 is in an open state.

[0039] In the embodiment, the press cover 500 is provided with a block 510, and the lifting column 300 is provided with a first slot 312, a second slot 313 and a connecting slot 314. The notch of the first slot 312 is connected with the notch of the second slot 313 through the connecting slot 314, and the second slot 313 is higher than the first slot 312. The block 510 can slide and switch between the first slot 312 and the second slot 313 through the connecting slot 314, and the press cover 500 is provided with a first stopper 520; when the block 510 is located in the second slot 313, the press cover 500 extends relative to the lifting column 300; when the block 510 is located in the first slot 312, the press cover 500 retracts relative to the lifting column 300, and the lower side of the first stopper 520 abuts against the pump housing 100. In the above structure, the card block 510 switches to be connected to the first card slot 312 or the second card slot 313 by sliding in the connecting slide slot 314, so that the pressing cover 500 can switch the position of retraction or extension relative to the lifting column 300. The switching method is relatively simple and convenient. When the card block 510 switches to the second card slot 313, the pressing cover 500 can drive the lifting column 300 to rise and fall synchronously through the contact and cooperation between the card block 510 and the second card slot 313.

[0040] Specifically, the first stopper 520 is a plate structure on the push cover 500. When the first stopper 520 abuts against the upper end surface of the pump housing 100, the push cover 500 is restricted from moving downward. It is conceivable that the first stopper 520 may also be located at other positions of the push cover 500. In this case, other structures inside the pump housing 100 may abut against the first stopper 520 to restrict the push cover 500 from moving downward.

[0041] Specifically, the first card slot 312 and the second card slot 313 are both extended in the horizontal direction, and the slots are located at one end in the horizontal direction. It is conceivable that in other embodiments, the first card slot 312, the second card slot 313 and the connecting slide slot 314 can be provided on the cover 500, and the card block 510 can be provided on the lifting column 300, which can also achieve similar functions. Those skilled in the art can make specific configurations according to actual needs; the first card slot 312 and the second card slot 313 can also be provided at an angle.

[0042] In the embodiment, the first slot 312 and the second slot 313 are arranged at intervals around the central axis of the lifting column 300, the notch of the first slot 312 is located at one end thereof close to the second slot 313, and the notch of the second slot 313 is located at one end thereof close to the first slot 312. In the above structure, the cover 500 is rotated to switch between the open state and the locked state, so that when the cover 500 is extended or retracted relative to the lifting column 300, the rotation switching process is relatively smooth and convenient to use, and the switch process can be completed by the one-way rotation of the cover 500 relative to the lifting column 300. It is conceivable that the notch of the first slot 312 can also be located at one end thereof away from the second slot 313, the notch of the second slot 313 can also be located at one end thereof away from the first slot 312, and the second slot 313 can also be arranged above the first slot 312, and the block 510 switches between the first slot 312 or the second slot 313 along the connecting slide 314.

[0043] In the embodiment, the connecting slot 314 is tilted relative to the central axis of the lifting column 300, which facilitates and simplifies the process of switching the cover 500 from the locked state to the open state, and the structure is simple and easy to implement. At this time, the angle between the connecting slot 314 and the first card slot 312 is an obtuse angle, and the angle between the connecting slot 314 and the second card slot 313 is an obtuse angle. It is conceivable that the connecting slot 314 can also be extended in an arc shape, and those skilled in the art can make specific configurations according to actual needs.

[0044] In the embodiment, the second slot 313 is provided on the lifting column 300, the slot width of the second slot 313 is smaller than the slot bottom width of the second slot 313, the lifting column 300 is provided with an elastic arm 315, one side of the second slot 313 is located at the elastic arm 315, and the slot of the second slot 313 is located at the end of the elastic arm 315. The pressing cover 500 is rotated and raised relative to the lifting column 300 to extend, and when switching from the locked state to the open state, the block 510 is inserted into the second slot 313 through the connecting slide 314, and the elastic arm 315 can be elastically deformed, allowing the block 510 to enter the second slot 313 through the narrow slot, and because the slot width of the second slot 313 is small, the risk of the block 510 accidentally falling out of the second slot 313 can be reduced, so that the pressing cover 500 can be relatively stably maintained in the open state.

[0045] Specifically, the lifting column 300 is made of plastic, so that the elastic arm 315 can be elastic.

[0046] In the embodiment, the connecting slide groove 314 is provided on the lifting column 300, and one end of the connecting slide groove 314 along the length direction penetrates to the outside of the lifting column 300, and forms a clearance opening 316 for the block 510 to enter the connecting slide groove 314. When the pressing cover 500 and the lifting column 300 are assembled, the block 510 on the pressing cover 500 can enter the connecting slide groove 314 from the clearance opening 316, which facilitates the assembly of the pressing cover 500 and the lifting column 300. Specifically, the upper end of the connecting slide groove 314 penetrates to the upper side of the lifting column 300, and the clearance opening 316 is located on the upper side of the lifting column 300. It is conceivable that in other embodiments, the clearance opening 316 can also be located on the lower side of the lifting column 300, that is, the lower end of the connecting slide groove 314 penetrates to the lower side of the lifting column 300.

[0047] In the embodiment, the pump housing 100 includes a main housing 110 and a rotating cover 120, the rotating cover 120 is rotatably disposed on the main housing 110, the liquid outlet 200 is rotatably disposed on the main housing 110, and the rotating cover 120, the liquid outlet 200 and the pressing cover 500 rotate synchronously. The rotating cover 120 is relatively large in size, and the user can drive the liquid outlet 200 and the pressing cover 500 to rotate synchronously by rotating the rotating cover 120, so as to conveniently control the card block 510 to switch between the first card slot 312 and the second card slot 313, so that the pressing pump switches between the open state and the locked state, which is relatively convenient to use. It can be understood that the user can switch the pressing cover 500 between the locked state and the open state by rotating one of the rotating cover 120, the liquid outlet 200 or the pressing cover 500, so as to retract or extend relative to the lifting column 300.

[0048] Specifically, the rotating cover 120 is rotatably connected to the main shell 110 by means of a hole-shaft fit, the liquid outlet 200 is rotatably connected to the lifting column 300 by means of a hole-shaft fit, and the pressing cover 500 is rotatably connected to the lifting column 300 and the rotating cover 120 by means of a hole-shaft fit.

[0049] Specifically, the lifting column 300 is slidably connected to the pump housing 100 through a slider slot structure, which limits the rotation of the lifting column 300 relative to the pump housing 100, that is, the pump housing 100 is provided with a slider, and the lifting column 300 is vertically provided with a slot, and the slider is slidably connected to the slot, which limits the rotation of the lifting column 300 relative to the pump housing 100 and allows the lifting column 300 to move up and down relative to the pump housing 100, thereby facilitating the rotation and lifting of the cover 500 relative to the lifting column 300 to switch between the retracted and extended positions.

[0050] In an embodiment, the liquid outlet part 200 includes a liquid outlet cover 210 and a nozzle 220, the nozzle 220 is connected to one side of the liquid outlet cover 210, the rotating cover 120 is provided with a mounting groove, the bottom wall of the mounting groove is vertically provided with a first clearance hole, the side wall of the mounting groove is provided with a first notch 121, the press cover 500 is vertically penetrated in the first clearance hole, the press cover 500 is provided with a second clearance hole, the liquid outlet cover 210 is located in the second clearance hole, the hole wall of the second clearance hole is provided with a second notch 530, the first notch 121 is opposite to the second notch 530, and the nozzle 220 is penetrated in the first notch 121 and the second notch 530. By passing the nozzle 220 through the first notch 121 and the second notch 530, the rotating cover 120, the liquid outlet part 200 and the press cover 500 can rotate synchronously, simplifying the structures of the rotating cover 120, the liquid outlet part 200 and the press cover 500, and facilitating the connection between the liquid outlet part 200 and the lifting column 300. The sizes of the first notch 121 and the second notch 530 can be made slightly larger than the nozzle 220, so as to improve the structural strength of the press cover 500 and the rotating cover 120.

[0051] It is conceivable that the push cover 500 and the rotating cover 120 can also be rotated synchronously by other means, so that rotating the rotating cover 120 can drive the push cover 500 to rotate and rise relative to the lifting column 300. For example, a slider slot structure is vertically connected between the push cover 500 and the rotating cover 120, so that the rotating cover 120 and the push cover 500 can rotate synchronously, and the push cover 500 can rotate and rise relative to the pump housing 100 and the lifting column 300 to switch from a locked state to an open state.

[0052] It is conceivable that the push cover 500 can also be retracted or extended relative to the lifting column 300 through other structures to switch the locked state and the open state. For example, the pump housing 100 is provided with a threaded hole, and the push cover 500 is provided with a stud portion. In the locked state, the stud portion is threadedly connected to the threaded hole to limit the push cover 500 from moving downward relative to the pump housing 100; when the stud portion is separated from the threaded hole, the push cover 500 can drive the lifting column 300 to move downward relative to the pump housing 100.

[0053] In the embodiment, the lifting column 300 includes an upper column 310, the liquid outlet part 200 is provided with a liquid outlet pipe 230, the upper column 310 is provided with a connecting pipe 317, the liquid outlet pipe 230 and the connecting pipe 317 are slidably sealed in a vertical direction, the connecting pipe 317 forms a connecting channel 318, the liquid storage chamber 400 is connected with the liquid outlet channel 201 through the connecting channel 318, and the cover 500 is connected with the upper column 310. In the open state, since the liquid outlet part 200 is fixed and the lifting column 300 can be raised and lowered, the connecting pipe 317 and the liquid outlet pipe 230 are slidably matched, so that the liquid storage chamber 400 can be connected with the liquid outlet channel 201 through the connecting channel 318, and the liquid outlet part 200 and the lifting column 300 will not be separated.

[0054] Specifically, the liquid outlet pipe 230 is sleeved on the outer periphery of the connecting pipe 317 and the two are in contact and sealed, so that the two slide and seal in a vertical direction. It is conceivable that the liquid outlet pipe 230 can also be inserted into the connecting pipe 317 and the two are in contact and sealed, so that the two slide and seal in a vertical direction.

[0055] In an embodiment, the lifting column 300 also includes a lower column 320, the connecting tube 317 is provided with a second piston portion 319, the upper end of the lower column 320 is provided with a sealing plug 321, the upper part of the lower column 320 is penetrated through the connecting tube 317, and the sealing plug 321 is located above the second piston portion 319; the press cover 500 is extended relative to the lifting column 300, and when the press cover 500 moves downward, the sealing plug 321 can be separated from the second piston portion 319 to connect the liquid storage chamber 400 and the connecting channel 318; when the press cover 500 is extended relative to the lifting column 300 and the press cover 500 moves upward, the sealing plug 321 can contact the second piston portion 319 to disconnect the liquid storage chamber 400 and the connecting channel 318. The above structure enables the liquid in the liquid storage chamber 400 to enter the liquid outlet channel 201 through the connecting channel 318 when the push cover 500 moves downward, and finally be squeezed out from the outer end of the liquid outlet channel 201; when the push cover 500 rises and resets, the sealing cover can be in sealing contact with the second piston part 319 to disconnect the liquid storage chamber 400 and the connecting channel 318, so that negative pressure is formed in the liquid storage chamber 400, and the liquid in the liquid storage bottle is sucked into the liquid storage chamber 400 through the first one-way valve 600.

[0056] Specifically, the second piston portion 319 is an annular structure, and the sealing plug 321 is an inverted cone structure, so that when the cover 500 moves upward, the sealing effect between the second piston portion 319 and the sealing plug 321 is relatively tight.

[0057] Specifically, the outer periphery of the lower column 320 and the inner wall of the connecting tube 317 are spaced apart so that the liquid in the liquid storage chamber 400 can enter the connecting channel 318 through the second piston portion 319 and the sealing plug 321 and finally flow out through the liquid outlet channel 201 .

[0058] Specifically, the first card slot 312 , the second card slot 313 and the connecting slide slot 314 are all disposed on the upper column 310 .

[0059] In other embodiments, the upper column 310 and the lower column 320 may also be an integrally formed structure, and those skilled in the art may configure the structure specifically according to actual needs.

[0060] In the embodiment, the pump housing 100 is provided with a limiting portion 111, the lower end of the lower cylinder 320 is provided with a second stopper 322, the limiting portion 111 is located above the second stopper 322, the first one-way valve 600 is located below the second stopper 322, the lower cylinder 320 is vertically movable relative to the pump housing 100, and the first one-way valve 600 and the limiting portion 111 limit the vertical movement stroke of the second stopper 322. When the lower cylinder 320 rises to the limit position, the sealing plug 321 contacts the second piston portion 319, which can limit the position of the upper cylinder 310; when the lower cylinder 320 moves down to the limit position, the lower end of the lower cylinder 320 can abut against the first one-way valve 600, so that the first one-way valve 600 is closed more tightly.

[0061] Specifically, a third notch is formed at the lower end of the lower column 320 to facilitate liquid to enter the liquid storage chamber 400 through the first one-way valve 600 .

[0062] Specifically, the first one-way valve 600 will remain disconnected under the action of gravity. When the cover 500 drives the lifting column 300 to rise, negative pressure is formed in the liquid storage chamber 400, so that the liquid in the liquid storage bottle passes through the first one-way valve 600 and enters the liquid storage chamber 400, which is convenient for squeezing out the liquid in the liquid storage chamber 400 when the cover 500 is pressed next time. The first one-way valve 600 is a ball valve.

[0063] Specifically, it also includes a spring 700, which is located in the liquid storage chamber 400. The opposite ends of the spring 700 are respectively in contact with the upper column 310 and the bottom wall of the piston installation chamber, so that after the cover 500 drives the lifting column 300 to move downward, the spring 700 can drive the cover 500 and the lifting column 300 to automatically rise and reset, so as to facilitate continuous squeezing of the liquid in the liquid storage bottle. Specifically, the spring 700 is a spring 700 made of plastic material, which can be immersed in liquid for a long time without being easily corroded, and has a low production cost. It is conceivable that the spring 700 can also be a spring 700 made of metal material, and those skilled in the art can make specific configurations according to actual needs.

[0064] Specifically, the liquid outlet 200 is also provided with a second one-way valve, allowing the liquid in the liquid storage chamber 400 to flow out from the liquid outlet channel 201 in one direction through the connecting channel 318, so that when the cover 500 drives the lifting column 300 to rise, negative pressure can be formed in the liquid storage chamber 400.

[0065] Specifically, the press pump of the present invention, when installed on a liquid storage bottle, can be used to squeeze out liquid daily necessities, such as detergents, skin care lotions, etc. Of course, other types of liquids or lotions can also use the press pump of this solution, which is not limited here.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pressing pump with a fixed liquid outlet position, characterized in that: include: A pump housing (100) is provided with a piston mounting cavity; A liquid outlet member (200) is disposed on the pump housing (100) and is fixed vertically relative to the pump housing (100); the liquid outlet member (200) is provided with a liquid outlet channel (201); A lifting column (300) is movably arranged on the pump housing (100) in the vertical direction. The lifting column (300) is provided with a first piston part (311). The first piston part (311) is movably arranged in the piston mounting cavity and can move up and down. The first piston part (311) and the piston mounting cavity below it are enclosed to form a liquid storage cavity (400). When the lifting column (300) descends relative to the pump housing (100), the liquid storage cavity (400) can be connected with the liquid outlet channel (201); when the lifting column (300) rises relative to the pump housing (100), the liquid storage cavity (400) can be disconnected from the liquid outlet channel (201); A push cover (500) is arranged on the lifting column (300); the push cover (500) can be telescopically adjusted relative to the lifting column (300); when the push cover (500) is retracted relative to the lifting column (300), the pump housing (100) abuts against the push cover (500) and restricts the push cover (500) from moving downward; when the push cover (500) is extended relative to the lifting column (300), the push cover (500) can drive the lifting column (300) to move downward relative to the pump housing (100).

2. The press pump with a fixed liquid outlet position according to claim 1, characterized in that: One of the push cover (500) and the lifting column (300) is provided with a card block (510), and the other is provided with a first card slot (312), a second card slot (313) and a connecting slide slot (314); the notch of the first card slot (312) is connected with the notch of the second card slot (313) through the connecting slide slot (314); the second card slot (313) is higher than the first card slot (312); the card block (510) can be slidably switched to the first card slot (312) through the connecting slide slot (314). The push cover (500) is provided with a first stopper (520); when the block (510) is located in the second block (313), the push cover (500) extends relative to the lifting column (300); when the block (510) is located in the first block (312), the push cover (500) retracts relative to the lifting column (300), and the lower side of the first stopper (520) abuts against the pump housing (100).

3. The press pump with a fixed liquid outlet position according to claim 2, characterized in that: The first card slot (312) and the second card slot (313) are arranged at intervals around the central axis of the lifting column (300); the notch of the first card slot (312) is located at one end thereof close to the second card slot (313), and the notch of the second card slot (313) is located at one end thereof close to the first card slot (312).

4. The press pump with a fixed liquid outlet position according to claim 2, characterized in that: The connecting slide groove (314) is arranged obliquely relative to the central axis of the lifting column (300).

5. The press pump with a fixed liquid outlet position according to claim 2, characterized in that: The second card slot (313) is arranged on the lifting column (300), the slot width of the second card slot (313) is smaller than the slot bottom width of the second card slot (313), the lifting column (300) is provided with an elastic arm (315), one side of the second card slot (313) is located on the elastic arm (315), and the slot of the second card slot (313) is located at the end of the elastic arm (315).

6. The press pump with a fixed liquid outlet position according to claim 2, characterized in that: The connecting slide groove (314) is arranged on the lifting column (300), and one end of the connecting slide groove (314) along the length direction penetrates to the outside of the lifting column (300) and forms a clearance opening (316) for the block (510) to enter the connecting slide groove (314).

7. The press pump with a fixed liquid outlet position according to claim 1, characterized in that: The pump housing (100) comprises a main housing (110) and a rotating cover (120); the rotating cover (120) is rotatably disposed on the main housing (110); the liquid outlet member (200) is rotatably disposed on the main housing (110); and the rotating cover (120), the liquid outlet member (200) and the push cover (500) rotate synchronously.

8. The press pump with a fixed liquid outlet position according to claim 7, characterized in that: The liquid outlet member (200) comprises a liquid outlet cover (210) and a nozzle (220), wherein the nozzle (220) is connected to one side of the liquid outlet cover (210), the rotating cover (120) is provided with a mounting groove, the bottom wall of the mounting groove is provided with a first clearance hole in the vertical direction, the side wall of the mounting groove is provided with a first notch (121), the pressing cover (500) is vertically penetrated in the first clearance hole, the pressing cover (500) is provided with a second clearance hole, the liquid outlet cover (210) is located in the second clearance hole, the hole wall of the second clearance hole is provided with a second notch (530), the first notch (121) is opposite to the second notch (530), and the nozzle (220) is penetrated in the first notch (121) and the second notch (530).

9. The press pump with a fixed liquid outlet position according to claim 1, characterized in that: The lifting column (300) comprises an upper column (310), the liquid outlet member (200) is provided with a liquid outlet pipe (230), the upper column (310) is provided with a connecting pipe (317), the liquid outlet pipe (230) and the connecting pipe (317) are in sealing cooperation along a vertical sliding direction, the connecting pipe (317) forms a connecting channel (318), the liquid storage chamber (400) is connected with the liquid outlet channel (201) through the connecting channel (318), and the pressing cover (500) is connected to the upper column (310).

10. The press pump with a fixed liquid outlet position according to claim 9, characterized in that: The lifting column (300) further comprises a lower column (320), the connecting tube (317) is provided with a second piston part (319), the upper end of the lower column (320) is provided with a sealing plug (321), the upper part of the lower column (320) is passed through the connecting tube (317), and the sealing plug (321) is located above the second piston part (319); the pressing cover (500) is extended relative to the lifting column (300), and when the pressing cover (500) moves downward, the sealing plug (321) can be separated from the second piston part (319) to connect the liquid storage chamber (400) and the connecting channel (318); when the pressing cover (500) is extended relative to the lifting column (300) and the pressing cover (500) moves upward, the sealing plug (321) can contact with the second piston part (319) to disconnect the liquid storage chamber (400) and the connecting channel (318).

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