CN218056507U - Adjustable output pressing pump - Google Patents

Abstract

The utility model discloses a press pump of adjustable output volume, which comprises a pump body, the button, regulating part and regulation structure, but the button slidable sets up at the pump body, the regulating part sets up at the pump body, it includes limit structure and can with the spacing portion of limit structure complex to adjust the structure, one of them sets up at the button of limit structure and the spacing portion two of them, another sets up at the regulating part, and limit structure includes two at least screens in order to form the spacing stroke of slip of two at least differences with spacing portion cooperation, the regulating part can with button relative movement, so that spacing portion can form spacing cooperation with the screens of difference, can be spacing pressing the stroke in two at least differences according to the button, thereby the blowout volume of pump is pressed in control, it is comparatively convenient to use.

Description

Adjustable output pressing pump

Technical Field

The utility model relates to a press the pump technical field, in particular to press pump of adjustable output volume.

Background

The push pump is generally used for outputting bottled liquid (emulsion) and the like, the pump body of the push pump is driven by a push head to operate to output the liquid, the output quantity of the liquid is controlled by the push stroke of the push head, and the push pump is generally freely controlled by a user during use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a press pump of adjustable output volume, it is comparatively convenient to use.

According to the utility model discloses a but output volume regulation's press pump of first aspect embodiment, which comprises a pump body, the button, regulating part and regulation structure, the button slidable sets up at the pump body, the regulating part sets up at the pump body, the regulation structure include limit structure and can with the spacing portion of limit structure complex, the two of them setting of limit structure and spacing portion is at the button, another sets up at the regulating part, and limit structure includes two at least screens in order to form the spacing stroke of slip of two at least differences with the cooperation of spacing portion, the regulating part can with button relative movement, so that spacing portion can form spacing cooperation with the screens of difference.

According to the utility model discloses but press pump of adjustable output volume has following beneficial effect at least: can be with pressing the head spacing at two at least different stroke of pressing to the control is pressed the blowout volume of pump, and it is comparatively convenient to use.

The utility model discloses an in some embodiments, the pump body includes the casing, the pump case, one-way ball, the auxiliary column, a piston, the main column, the locking closure, a spring, wherein, the casing is generally installed in emulsion bottleneck department, the pump case, the locking closure is fixed on the casing, the button is connected with the main column, the spring is compressed between main column and locking closure, auxiliary column and piston are connected to the main column lower extreme, the pump case bottom is the feed inlet, one-way ball activity sets up in this feed inlet department, the piston is located the pump case, and form the feed bin at the pump case, be provided with the pump material passageway that feeds through feed bin and button's discharge gate intercommunication in the main column, the button can drive the main column, auxiliary column and piston move down, the feed bin volume reduces, pressure increase, one-way ball shutoff feed inlet, make the feed bin material get into the discharge gate output of button through the pump material passageway, loosen the button, the connecting rod, the main column, auxiliary column and piston are because the effort of spring resets, at this moment, form the negative pressure, the feed bin opens the feed bin is opened, the feed bin is followed the feed bin and the discharge capacity of material repacking, can be realized the function of pump material, and the stroke of pump stroke control through the control of the pump that can be controlled thereby the pump.

The utility model discloses a some embodiments, spacing portion is for setting up at the bellying of press head, and the bellying is the elongated structure, and the screens is for setting up at the regulating part and can with bellying complex cell type structure, and each limit structure's cell type structure configuration is at least two, and two at least cell type structure's degree of depth is different, and the cell type structure cooperation through the bellying and the different degree of depth reaches the purpose of adjusting the press head and pressing the stroke to realize adjusting the function of blowout volume.

The utility model discloses an in some embodiments, the bellying configuration is to at least two, and all bellies evenly encircle the distribution of pressing the head, and limit structure corresponds the distribution with the bellying to improve the stability of adjusting the structure.

The utility model discloses an in some embodiments, limit structure is including setting up first spacing groove, the second spacing groove at the regulating part, and wherein, the second spacing groove configuration is two and sets up respectively in the both sides of first spacing groove, and the degree of depth of first spacing groove is greater than the degree of depth of second spacing groove to reach two sections regulatory function.

The utility model discloses an in some embodiments, first spacing groove and second spacing groove mutually independent to avoid appearing the problem that the bellying jumps the position, reliability when improving the use.

The utility model discloses an in some embodiments, limit structure still includes two setting at the spacing steps of regulating part, and two spacing steps set up respectively in the outside of two second spacing grooves, and when spacing step and bellying cooperation, the press head can not be pressed down and slide to reach the function of locking press head.

The utility model discloses an in some embodiments, be provided with the boss portion that corresponds with the bellying between the adjacent screens, the bellying can be by jack-up and produce certain sense of touch or vibration sense when passing through this boss portion to in remind the user, and also can produce certain resistance to the skew of bellying, reduce the mistake and touch the condition emergence of skew.

In some embodiments of the present invention, when at least one locking position is engaged with the limiting portion, the pressing head cannot be pressed to slide, so as to lock the position of the pressing head.

In some embodiments of the present invention, the adjusting member is rotatably disposed on the pump body, and the function of changing the position-limiting state is achieved by rotating the adjusting member.

The utility model discloses an in some embodiments, the regulating part is the loop forming element, and the pump body includes the casing, and the extension is provided with the connecting shaft portion on the casing, and the regulating part suit is on the connecting shaft portion to can rotate along the axis of connecting shaft portion, thereby realize the rotation setting of regulating part.

In some embodiments of the utility model, the regulating part inboard is provided with the direction scrobicular ring, and the connecting shaft portion is provided with direction scrobicular ring complex annular protruding, fixes the regulating part to connecting shaft portion through annular protruding and the cooperation of direction scrobicular ring to make the regulating part rotate around connecting shaft portion.

In some embodiments of the present invention, the connecting shaft portion is provided with a notch to allow the connecting shaft portion to be deformed locally, so that the adjusting member is fitted.

In some embodiments of the present invention, the adjusting member is provided with anti-slip threads on the outside thereof so as to allow the adjusting member to be rotated by hand.

The utility model discloses an in some embodiments, be provided with position identification between the regulating part and the pump body for remind the user to adjust the position state of structure, facilitate the use.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a push pump according to an embodiment of the present invention;

fig. 2 is an exploded view of the pressing pump according to the embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of the pressing pump according to the embodiment of the present invention when not pressed;

fig. 4 is a schematic cross-sectional view of the pressing pump according to the embodiment of the present invention when pressed;

fig. 5 is a schematic structural view of an adjusting member according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a button according to an embodiment of the present invention.

Reference numerals:

pump body 100, casing 101, pump casing 110, connecting shaft 111, annular projection 112, notch 113, one-way ball 120, auxiliary column 130, piston 140, main column 150, lock cover 160, spring 170;

a press head 200, a boss 210;

the adjusting part 300, a first limiting groove 301, a second limiting groove 302, a limiting step 303, a boss part 304, a guide concave ring 305 and an anti-skid thread 306;

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 and 2, according to the utility model discloses a press pump of adjustable output volume, including the pump body 100, the button 200, regulating part 300 and regulation structure, button 200 slidable sets up at the pump body 100, regulating part 300 sets up at the pump body 100, adjust the structure including limit structure and can with the spacing portion of limit structure complex, one of them sets up at the button 200 of limit structure and spacing portion, another sets up at regulating part 300, and limit structure includes at least two screens in order to form the spacing stroke of the slip of at least two differences with the cooperation of spacing portion, regulating part 300 can with button 200 relative movement, so that spacing portion can form spacing cooperation with the screens of difference, thereby can be spacing at the stroke of pressing of at least two differences with the button 200, thereby the blowout volume of control press pump, it is comparatively convenient to use.

Specifically, the output quantity of the emulsion is determined according to the pressing depth (pressing stroke) of the button 200, when the pressing stroke is short due to the matching of the limiting part and the clamping position, the pressing depth of the button 200 is small, and only a small amount of emulsion can be output, and when the pressing stroke is long due to the matching of the limiting part and the clamping position, the pressing depth of the button 200 is large, and a large amount of emulsion can be output, so that the effect of adjusting the emulsion ejection quantity is achieved, the error caused by poor control of the pressing force is reduced, and the use by a user is facilitated.

The utility model discloses an in some embodiments, spacing portion sets up at press head 200, and limit structure sets up at regulating part 300, can make different screens of limit structure and spacing portion form the cooperation through the position of adjustment regulating part 300.

In some embodiments of the utility model, spacing portion sets up at regulating part 300, and limit structure sets up at button 200, also can satisfy the function of adjusting the blowout volume, facilitates the use.

As shown in fig. 3 and 4, in some embodiments of the present invention, the pump body includes a casing 101, a pump case 110, a one-way ball 120, a secondary column 130, a piston 140, a primary column 150, a locking cover 160, and a spring 170, wherein the casing 101 is generally installed at an emulsion bottleneck, the pump case 110 and the locking cover 160 are fixed on the casing 101, the press head 200 is connected to the primary column 150, the spring 170 is compressed between the primary column 150 and the locking cover 160, the secondary column 130 and the piston 140 are connected to a lower end of the primary column 150, a feed inlet is formed at a bottom of the pump case 110, the one-way ball 120 is movably disposed at the feed inlet, the piston 140 is located in the pump case 110 and forms a storage bin in the pump case 110, a pump material passage communicating the storage bin with a discharge port of the press head 200 is disposed in the primary column 150, the secondary column 130 and the piston 140 can be driven by the press head 200 to move down, the storage bin has a reduced volume, a pressure is increased, the feed inlet is blocked by the one-way ball 120, so that the material enters the discharge port of the press head 200 through the pump passage and is released, the discharge outlet of the press head 200, the connection rod 570, the main column 150, the primary column 130 and the piston 140 and the spring 140 can be opened, thereby controlling the volume of the feed inlet, the pump to be increased, the volume of the pump, the pump head, the volume, the pump can be increased, the volume of the pump, the pump can be increased, and the volume of the pump can be controlled by the pump, and the volume of the pump head 200, and the pump.

Specifically, a button channel is formed in the button 200 and provided with a discharge hole, the button 200 is connected with the main column 150 and enables the button channel to be communicated with a pumping channel, and materials in the storage bin can enter the button channel of the button 200 through the pumping channel and are finally output from the discharge hole.

It can be imagined that, in some embodiments of the present invention, the discharge hole of the emulsion may not be arranged at the button 200, and may be connected to the pump material channel in the main column 150 through an independent member (such as a discharge nozzle), so as to realize the output of the emulsion, at this time, the button 200 is only used for driving the main column 150 to move, so that the discharge hole and the button 200 are arranged independently, and the discharge hole does not move along with the pressing of the button 200, thereby satisfying different use requirements.

As shown in fig. 2, fig. 5 and fig. 6, in some embodiments of the present invention, the limiting portion is a protruding portion 210 disposed on the pressing head 200, the clamping portion is a groove structure disposed on the adjusting member 300 and capable of cooperating with the protruding portion 210, the groove structure of each limiting structure is configured to be at least two, and the depths of at least two groove structures are different, so as to achieve the purpose of adjusting the pressing stroke of the pressing head 200 through the cooperation of the protruding portion 210 and the groove structures of different depths, thereby achieving the function of adjusting the ejection amount.

Specifically, the protruding portion 210 is slidably engaged with the groove-shaped structure, the protruding portion 210 is aligned with different groove-shaped structures, and different adjusting effects can be achieved by pressing the press head 200, so that different use requirements are met.

It is contemplated that in some embodiments of the present invention, the protrusion 210 is provided on the adjusting member 300, and the groove structure provided on the pressing head 200 may also satisfy the function of adjusting the ejection amount.

It is contemplated that in some embodiments of the present invention, the detent may also be formed by providing a protruding structure, such as a boss, a convex hull, etc. corresponding to the protruding portion 210 on the adjusting member 300, corresponding to the position of the protruding portion 210, and also limiting the movable stroke of the protruding portion 210.

In some embodiments of the present invention, the protrusions 210 are configured to be at least two, and all the protrusions 210 are uniformly distributed around the head 200, and the limiting structures are distributed corresponding to the protrusions 210, so as to improve the stability of the adjusting structure.

Specifically, through setting up two at least bellying 210 for when the butt is spacing, the atress is more balanced, and the difficult circumstances such as skew that take place improves practical reliability by the protection pump body structure that can be better.

As shown in fig. 6, in some embodiments of the present invention, the button 200 is provided with two symmetrically distributed protrusions 210.

As shown in fig. 5, in some embodiments of the present invention, the limiting structure includes a first limiting groove 301 and a second limiting groove 302 disposed on the adjusting member 300, wherein the second limiting groove 302 is configured as two and disposed on two sides of the first limiting groove 301, and the depth of the first limiting groove 301 is greater than the depth of the second limiting groove 302, so as to achieve the dual-stage adjusting function.

It is contemplated that in some embodiments of the present invention, the spacing grooves may be configured as three or more than three and formed with at least three different depths to achieve three or more adjustment effects.

As shown in fig. 5, in some embodiments of the present invention, the first limiting groove 301 and the second limiting groove 302 are independent from each other, so as to avoid the problem of the position jump of the protruding portion 210, and improve the reliability in use.

Specifically, the first limiting groove 301 and the second limiting groove 302 are independent from each other, and when the protruding portion 210 slides in one of the grooves, the protruding portion 210 cannot jump to the other groove due to the deviation of the pressing head 200 or the adjusting member 300, so that the limiting state cannot be changed, the output quantity is the adjustment quantity, and the reliability and the convenience of use are improved.

As shown in fig. 5, in some embodiments of the present invention, the limiting structure further includes two limiting steps 303 disposed on the adjusting member 300, the two limiting steps 303 are disposed outside the two second limiting grooves 302, and when the limiting steps 303 are engaged with the protruding portion 210, the button 200 cannot be pressed to slide, so as to achieve the function of locking the button 200.

Specifically, when spacing step 303 and bellying 210 cooperate, press head 200 by spacing at the highest position, can't press to the transportation, and in daily use, also can lock press head 200, conveniently deposit or avoid being touched by the mistake.

As shown in fig. 5, in some embodiments of the present invention, the first limiting groove 301, the second limiting groove 302 and the limiting step 303 are disposed inside the adjusting member 300.

As shown in fig. 5, in some embodiments of the present invention, through the above structure, a three-stage adjusting function can be formed, wherein the first limiting groove 301 capable of realizing the maximum output is disposed at the middle position, and the two sides of the first limiting groove 301 are disposed with the second limiting groove 302 and the limiting step 303 relatively, so that the user can rotate the adjusting member 300 forward and backward to achieve the function of reducing the ejection amount, which is convenient for use.

As shown in fig. 5, in some embodiments of the present invention, a boss portion 304 corresponding to the protruding portion 210 is disposed between adjacent locking positions, and the protruding portion 210 can be lifted up and generate a certain touch or vibration when passing through the boss portion 304, so as to remind the user, and also generate a certain resistance to the offset of the protruding portion 210, thereby reducing the occurrence of the situation of the offset due to the erroneous touch.

Specifically, the main structure of the pressing pump is generally a plastic part, the pressing head 200 is generally made of a plastic material, the boss portion 304 is a protruding structure on the inner side of the adjusting member 300, when the adjusting member 300 and the pressing head 200 move relatively, the side surface of the protruding portion 210 abuts against the boss portion 304, the protruding portion 210 can reach a position corresponding to another clamping position after passing through the boss portion 304, the protruding portion 210 can jump when passing through the boss portion 304, and a certain touch or vibration feeling is generated, so that a user can be reminded of the change of the gear position.

In some embodiments of the present invention, both sides of the boss portion 304 are inclined planes or arc structures to facilitate the passage of the guide boss 210.

In some embodiments of the present invention, when at least one position-limiting portion is engaged with the position-limiting portion, the button 200 cannot be pressed to slide, so as to lock the position of the button 200.

Specifically, in the embodiment of the present invention, the function of locking the position of the button 200 is realized by configuring the limit step 303.

It can be imagined that in some embodiments of the utility model, also can set up the screens into the side direction draw-in groove structure, spacing portion can the side direction card go into the side direction draw-in groove structure in, also can lock the position of button 200 to can set up the height of side direction draw-in groove structure as required, with the locking of button 200 in different positions, if with the button 200 locking in the extreme low position, conveniently store the transportation.

In some embodiments of the present invention, a locking structure capable of being used permanently (within a service life) is formed, so that the user can lock the pressing head 200 at any time, and the use is more convenient compared to the conventional pressing pump.

As shown in fig. 1 and 2, in some embodiments of the present invention, the adjusting member 300 is rotatably disposed on the pump body 100, and the function of changing the position-limiting state is achieved by rotating the adjusting member 300.

It can be appreciated that, in some embodiments of the present invention, the adjusting member 300 may also be fixedly disposed on the pump body 100, and the button 200 is disposed to be rotatable relative to the pump body 100, and the position of the adjusting structure can be adjusted by rotating the button 200, so as to achieve the adjusting function of the output flow.

Specifically, the button 200 may be rotatably coupled to the main post 150 such that the button 200 is able to rotate relative to the pump body 100.

It is contemplated that in some embodiments of the present invention, the adjustment member 300 and the button 200 may be configured to rotate relative to the pump body 100, and that in use, the adjustment member 300 or the button 200 may be rotated to achieve the adjustment function.

It can be thought that, in some embodiments of the present invention, the adjusting member 300 can be slidably disposed on the pump body 100, and the position of the adjusting member 300 can be changed by sliding, so that different clamping positions correspond to the limiting portions, and the adjusting function can also be realized.

As shown in fig. 2 and 5, in some embodiments of the present invention, the adjusting member 300 is a ring-shaped member, the pump body 100 includes a housing 101, the housing 101 is provided with a connecting shaft portion 111 in an extending manner, and the adjusting member 300 is sleeved on the connecting shaft portion 111, so that the adjusting member 300 can rotate around an axis of the connecting shaft portion 111, thereby achieving a rotational setting of the adjusting member 300.

Specifically, the housing 101 is a plastic housing and has a screw structure capable of being coupled to the bottle of the emulsion, the coupling shaft 111 is formed to extend at an upper portion of the housing 101, and the housing 101 may be integrally formed through an injection molding process.

It is contemplated that, in some embodiments of the present invention, the adjusting member 300 may be a sliding block, and the sliding block is disposed in a sliding groove corresponding to the sliding block in the housing 101, and the sliding groove may guide the sliding block to slide linearly or slide in an arc, so that the adjusting member 300 slides or rotates relative to the button 200.

As shown in fig. 2 and 5, in some embodiments of the present invention, the inner side of the adjusting member 300 is provided with a guiding recessed ring 305, the connecting shaft portion 111 is provided with an annular protrusion 112 engaged with the guiding recessed ring 305, the adjusting member 300 is fixed to the connecting shaft portion 111 by the engagement of the annular protrusion 112 and the guiding recessed ring 305, and the adjusting member 300 can rotate around the connecting shaft portion 111.

Specifically, the annular protrusion 112 and the guide recessed ring 305 may be configured in plural to improve the stability of the connection.

It is contemplated that in some embodiments of the present invention, an annular groove may be provided in the connecting shaft portion 111, and an annular protrusion may be provided to the inner side of the adjuster 300.

It is contemplated that in some embodiments of the present invention, an annular groove may be disposed on the connecting shaft portion 111, a protrusion capable of being snapped into the annular groove may be disposed on the inner side of the adjusting member 300, and the adjusting member 300 may be rotatably disposed on the connecting shaft portion 111.

As shown in fig. 2, in some embodiments of the present invention, the connecting shaft portion 111 is provided with a notch 113 to enable the connecting shaft portion 111 to be locally deformed so as to fit the adjuster 300.

Specifically, the housing 101 is a plastic housing, and after the notch 113 is formed, the housing can have a certain local deformation capability and can automatically and elastically reset, so that the adjusting member 300 can be conveniently installed, and the connection is more compact and reliable.

It can be imagined that, in some embodiments of the present invention, a notch may also be provided in the adjusting member 300, and a limiting groove is avoided, which can also facilitate the installation of the adjusting member 300.

As shown in fig. 5, in some embodiments of the present invention, the adjusting member 300 is provided with an anti-slip pattern 306 on the outer side thereof, so that the adjusting member 300 can be rotated by a human hand.

Specifically, the anti-slip threads 306 are arranged in a vertical thread structure and distributed on the outer side of the adjusting member 300.

In some embodiments of the present invention, a position mark is provided between the adjusting member 300 and the pump body 100 for reminding the user to adjust the position state of the structure, which is convenient for use.

Specifically, the adjusting part 300 can be correspondingly provided with the gear marks according to the depth of the limiting groove, the pump body 100 is provided with the shear head pointing to the gear marks, the adjusting part 300 is rotated, and the shear head can point to the corresponding gear marks, so that a user can conveniently recognize the current gear state.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. A push pump with adjustable output volume, comprising:

a pump body (100);

a press head (200), wherein the press head (200) is arranged on the pump body (100) in a sliding way;

an adjustment member (300), the adjustment member (300) being provided at the pump body (100);

adjust the structure, adjust the structure include limit structure and can with limit structure complex spacing portion, limit structure with the two of spacing portion sets up press head (200), and another setting is in regulating part (300), just limit structure include at least two screens with spacing portion cooperation forms the spacing stroke of the slip of at least two differences, regulating part (300) can with press head (200) relative movement, so that spacing portion can with different the screens forms spacing cooperation.

2. An adjustable output volume compression pump according to claim 1,

the limiting part is arranged on a protruding part (210) of the press head (200), the clamping position is arranged on the adjusting part (300) and can be matched with the protruding part (210) in a groove-shaped structure, the groove-shaped structures of each limiting structure are at least two, and the depth of the groove-shaped structures is different.

3. An adjustable output compression pump according to claim 2,

the number of the convex parts (210) is at least two, all the convex parts (210) are uniformly distributed around the press head (200), and the limiting structures are correspondingly distributed with the convex parts (210).

4. An adjustable output compression pump according to claim 2,

the limiting structure comprises a first limiting groove (301) and a second limiting groove (302) which are arranged on the adjusting piece (300), wherein the second limiting groove (302) is configured into two parts and is respectively arranged on two sides of the first limiting groove (301), and the depth of the first limiting groove (301) is larger than that of the second limiting groove (302).

5. An adjustable output compression pump according to claim 4,

the first limiting groove (301) and the second limiting groove (302) are independent from each other.

6. The variable output compression pump according to claim 4,

the limiting structure further comprises two limiting steps (303) arranged on the adjusting piece (300), the two limiting steps (303) are respectively arranged on the outer sides of the two second limiting grooves (302), and when the limiting steps (303) are matched with the protruding portions (210), the pressing head (200) cannot be pressed to slide.

7. The variable output compression pump of claim 2,

a boss part (304) corresponding to the lug boss (210) is arranged between the adjacent clamping positions.

8. An adjustable output volume compression pump according to claim 1,

when at least one clamping position is matched with the limiting part, the press head (200) can not be pressed to slide.

9. An adjustable output volume compression pump according to claim 1,

the adjusting piece (300) is rotatably arranged on the pump body (100).

10. An adjustable output compression pump according to claim 9,

the adjusting piece (300) is an annular piece, the pump body (100) comprises a shell (101), the shell (101) is provided with a connecting shaft part (111), and the adjusting piece (300) is sleeved on the connecting shaft part (111) and can rotate along the connecting shaft part (111).

Images