Soap dispenser core

Abstract

The utility model provides a soap dispenser core, and belongs to the technical field of sanitary equipment. The soap dispenser comprises an outer core body, a piston rod is sealed in the outer core body and slidably connected with the outer core body, an upward sliding limiting piece is arranged between the upper end of the outer core body and the piston rod, the outer core body is communicated with the interior of the piston rod to form a soap liquid storage cavity, and a liquid inlet structure and a liquid outlet structure are arranged at the top end of the piston rod and the bottom end of the outer core body respectively. And an elastic driving piece capable of driving the piston rod to slide upwards to reset when the piston rod slides downwards to extrude the liquid soap storage cavity is arranged between the outside of the piston rod and the outer core body. The spring is arranged outside the liquid soap storage cavity, so that the volume of the liquid soap storage cavity can be increased, and more liquid soap can be stored in the liquid soap storage cavity; the spring is not in contact with the liquid soap in the liquid soap storage cavity, so that no extra pressing resistance is generated; the liquid soap storage cavity is good in sealing performance, and liquid soap cannot leak.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of health equipment relates to a soap dispenser core. BACKGROUND

[0002] People wash generally use solid soap or toilet soap, but in the occasion of many people such as hospital, factory, many people use a piece of soap or a piece of toilet soap alternately, and it is easy to cause the infection of disease, so the soap dispenser appears. The existing soap dispenser is mostly squeezed by pressing the piston rod to make the liquid storage cavity be squeezed to discharge liquid, because the piston rod needs to reset, so the reset spring is arranged in the liquid storage cavity, the piston rod compresses the spring when pushing, after discharging liquid, the compressed spring drives the piston rod to reset, but because the reset spring is arranged in the liquid storage cavity, it occupies the volume of the liquid storage cavity, and when the reset spring is compressed, it contacts the soap liquid in the liquid storage cavity to generate additional resistance, so the pressing force of the piston rod needs to be increased. SUMMARY

[0003] The utility model discloses to aim at above -mentioned problem provides a kind of soap dispenser core.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of soap dispenser core, including outer core body, the piston rod is slidably connected in the outer core body, and upper slide limiting piece is arranged between the upper end of outer core body and the piston rod, the outer core body is connected with the piston rod inside to form soap liquid storage cavity, liquid inlet structure and liquid outlet structure are respectively arranged at the top end of piston rod and the bottom end of outer core body, and the piston rod is arranged with elastic driving element between the outside of piston rod and outer core body, when piston rod is extruded after sliding down, the elastic driving element can drive piston rod to slide up and reset.

[0006] Upper slide limiting piece plays the role of sliding up limiting to piston rod, and can reduce the swing of piston rod when sliding up and down in outer core body, elastic driving element is arranged at the outside of piston rod, which can effectively increase the volume of soap liquid storage cavity, so that more amount of soap liquid can be stored in soap liquid storage cavity, and there is no contact between elastic driving element and soap liquid in soap liquid storage cavity, which can effectively reduce the pressing force when pressing piston rod downward.

[0007] In the above-mentioned soap dispenser core, the elastic driving element includes a spring that is sleeved on the piston rod, the upper end of the piston rod is provided with a spring fixing cover, the upper end of the spring abuts against the spring fixing cover, and the lower end of the spring abuts against the upper slide limiting piece.

[0008] The spring is sleeved on the piston rod, and the two ends of the spring are fixed by the spring fixing cover and the upper slide limiting piece respectively, the spring is arranged outside the soap liquid storage cavity, which can effectively increase the volume of the soap liquid storage cavity and reduce the pressing force when pressing the piston rod downward.

[0009] In the soap dispenser core, the upper sliding limiting member comprises a piston plug detachably connected to the inner side wall of the outer core body, a sliding groove adapted to the piston rod is formed through the piston plug, a limiting step is formed between the lower end of the piston plug and the inner side wall of the outer core body, a cylindrical limiting body capable of abutting on the limiting step to form the upper sliding limiting is arranged at the lower end of the piston rod, and the cylindrical limiting body is slidably connected to the inner side wall of the outer core body and is provided with a sealing structure.

[0010] The outer diameter of the cylindrical limiting body at the lower end of the piston rod is greater than the inner diameter of the sliding groove of the piston plug, the cylindrical limiting body abuts on the limiting step to form the upper sliding limiting when the piston rod slides, the sealing structure plays a role of sliding sealing, and it is ensured that the soap liquid does not flow out from between the cylindrical limiting body and the outer core body during the upward and downward sliding of the piston rod.

[0011] In the soap dispenser core, the sealing structure comprises a plurality of sealing ring mounting grooves arranged along the axial direction and arranged on the outer side wall of the cylindrical limiting body, and a sealing ring is arranged in the sealing ring mounting groove, and the sealing ring abuts on the inner side wall of the outer core body to form a seal.

[0012] The plurality of sealing rings arranged on the outer side wall of the cylindrical limiting body form a plurality of sliding seals between the inner side wall of the outer core body, which can ensure that the soap liquid does not flow out from between the cylindrical limiting body and the outer core body during the upward and downward sliding of the piston rod, and the sealing ring mounting groove is used for positioning and mounting the sealing ring.

[0013] In the soap dispenser core, the piston plug is threadedly connected to the inner side wall of the outer core body.

[0014] The piston plug is threadedly connected to the inner side wall of the outer core body, which is fixed stably and convenient to disassemble and assemble.

[0015] In the soap dispenser core, a positioning step is arranged at the upper end of the piston plug.

[0016] The positioning step at the upper end of the piston plug cooperates with the top end of the outer core body to play a role of positioning and fixing the piston plug.

[0017] In the soap dispenser core, the spring fixing cover is threadedly connected to the piston rod.

[0018] The spring fixing cover is used for fixing the stroke of the spring, the spring fixing cover is threadedly connected to the piston rod, which is fixed stably and convenient to disassemble and assemble.

[0019] In the soap dispenser core, the liquid outlet structure includes a liquid outlet nozzle arranged at the bottom end of the outer core body, a liquid outlet flow channel penetrating through the liquid outlet nozzle and communicating with the soap storage cavity, a liquid outlet rolling groove arranged at the top of the liquid outlet flow channel at the inner bottom end of the outer core body, and a liquid outlet ball arranged in the liquid outlet rolling groove.

[0020] When the piston rod is pressed to slide downward to squeeze the soap storage cavity, the liquid outlet ball moves along the guide of the ball fixed stroke assembly under the action of the squeezing force to open the liquid outlet flow channel, so that the soap flows out of the liquid outlet flow channel. When the piston rod slides upward to reset, the liquid outlet ball returns to the liquid outlet rolling groove to seal the liquid outlet flow channel. The ball fixed stroke assembly can guide the movement track of the liquid outlet ball.

[0021] In the soap dispenser core, the liquid outlet structure includes a liquid outlet nozzle arranged at the bottom end of the outer core body, a liquid outlet flow channel penetrating through the liquid outlet nozzle and communicating with the soap storage cavity, a liquid outlet rolling groove arranged at the top of the liquid outlet flow channel at the inner bottom end of the outer core body, and a liquid outlet ball arranged in the liquid outlet rolling groove.

[0022] When the soap storage cavity is squeezed, the liquid outlet ball moves axially in the first stroke groove under the action of the squeezing force to make the soap flow out of the liquid outlet flow channel. When the piston rod resets, the liquid outlet ball resets to seal the liquid outlet flow channel under the action of gravity. The first stroke groove can guide the movement track of the liquid outlet ball, and the limiting rod at the top of the first stroke groove can prevent the liquid outlet ball from falling out.

[0023] In the soap dispenser core, the liquid outlet structure includes a liquid outlet nozzle arranged at the bottom end of the outer core body, a liquid outlet flow channel penetrating through the liquid outlet nozzle and communicating with the soap storage cavity, a liquid outlet rolling groove arranged at the top of the liquid outlet flow channel at the inner bottom end of the outer core body, and a liquid outlet ball arranged in the liquid outlet rolling groove.

[0024] The soap is added into the soap storage cavity through the second stroke groove and the first inflow channel. When the piston rod slides downward to squeeze the soap storage cavity, the soap in the soap storage cavity will impact the liquid inlet ball upward to make the liquid inlet ball move upward in the second stroke groove. The liquid inlet ball is clamped on the sealing ring to form a seal, preventing the soap from overflowing from the second stroke groove. When the piston rod resets, the liquid inlet ball returns to the liquid inlet rolling groove under the action of gravity to seal the first inflow channel.

[0025] Compared with the prior art, the soap liquid device has the advantages that: 1. The spring is arranged outside the soap liquid storage cavity, so that the volume of the soap liquid storage cavity is increased, and more soap liquid can be stored in the soap liquid storage cavity; 2. The spring does not contact the soap liquid in the soap liquid storage cavity, so that no additional pressing resistance is generated; and 3. The soap liquid storage cavity has good sealing performance, and the soap liquid cannot leak. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure provided by the utility model;

[0027] Figure 2 is a sectional view provided by the utility model;

[0028] Figure 3 is a schematic diagram of the structure of the upper sliding limiting piece;

[0029] Figure 4 is a schematic diagram of the structure of the piston rod;

[0030] Figure 5 is a schematic diagram of the structure of the ball fixing stroke assembly;

[0031] Figure 6 is a schematic diagram of the structure of the sealing ring.

[0032] In the figure, the outer core body 1, the piston rod 2, the upper sliding limiting piece 3, the soap liquid storage cavity 4, the liquid inlet structure 5, the liquid outlet structure 6, the elastic driving piece 7, the spring 8, the spring fixing cover 9, the piston plug 10, the sliding groove 11, the limiting step 12, the cylindrical limiting body 13, the sealing structure 14, the sealing ring mounting groove 15, the sealing ring 16, the positioning step 17, the liquid outlet nozzle 18, the liquid outlet flow channel 19, the liquid outlet rolling groove 20, the liquid outlet ball 21, the ball fixing stroke assembly 22, the stroke cylinder 23, the first stroke groove 24, the limiting rod 25, the liquid inlet nozzle 26, the first inflow channel 27, the liquid inlet rolling groove 28, the liquid inlet ball 29, the second stroke groove 30, the sealing ring 31, the handle 32, and the fixed plate 33 are shown. DETAILED DESCRIPTION

[0033] As shown in Figures 1-4 , a kind of soap liquid device core, including outer core body 1, piston rod 2 is sealed and slidably connected in outer core body 1, upper sliding limiting piece 3 is equipped between outer core body 1 upper end and piston rod 2, soap liquid storage cavity 4 is formed with the intercommunication between outer core body 1 and piston rod 2 interior, liquid inlet structure 5 and liquid outlet structure 6 are respectively equipped at piston rod 2 top end and outer core body 1 bottom end, piston rod 2 exterior and outer core body 1 between are equipped with when piston rod 2 slides down extrusion soap liquid storage cavity 4 after can drive piston rod 2 slide up reset elastic driving piece 7.

[0034] The utility model discloses, when using, press down the piston rod 2, the piston rod 2 slide down extrusion soap storage cavity 4 make the soap storage cavity 4 in the soap of liquid from the liquid structure 6 of the bottom end of outer core body 1 flow out complete liquid outlet, stop pressing after the soap is fetched, and the elastic drive 7 can drive the piston rod 2 slide up reset.

[0035] The upper slide limiting piece 3 plays a role of limiting the upward sliding of the piston rod 2 and can reduce the swing of the piston rod 2 when sliding up and down in the outer core body 1. Compared with the conventional elastic drive arranged in the soap storage cavity 4, the elastic drive 7 in the utility model is arranged outside the piston rod 2, which can effectively increase the volume of the soap storage cavity 4, so that more soap can be stored in the soap storage cavity 4, and the elastic drive 7 does not contact the soap in the soap storage cavity 4, which can effectively reduce the pressing force when pressing down the piston rod 2.

[0036] Specifically, as shown in Figure 1 and Figure 2 , the elastic drive 7 comprises a spring 8 sleeved on the piston rod 2, the upper end of the piston rod 2 is provided with a spring fixing cover 9, the upper end of the spring 8 abuts against the spring fixing cover 9, the lower end of the spring 8 abuts against the upper slide limiting piece 3, and the spring fixing cover 9 is connected with the piston rod 2 in a threaded mode.

[0037] The spring 8 is sleeved on the piston rod 2, and the two ends of the spring 8 are fixed through the spring fixing cover 9 and the upper slide limiting piece 3 respectively. When the piston rod 2 is pressed down to fetch the soap, the spring 8 is compressed, and after the soap is fetched, the compressed spring 8 can drive the piston rod 2 to slide up and reset. The spring fixing cover 9 is used for fixing the stroke of the spring 8, and the spring fixing cover 9 is connected with the piston rod 2 in a threaded mode, which is stable and convenient to disassemble and assemble.

[0038] The spring 8 is arranged outside the soap storage cavity 4, which can effectively increase the volume of the soap storage cavity 4 and reduce the pressing force when pressing down the piston rod 2.

[0039] Specifically, as shown in Figures 1-4 , the upper slide limiting piece 3 comprises a piston plug 10 detachably connected to the inner side wall of the outer core body 1, a sliding groove 11 adapted to the piston rod 2 is formed in the piston plug 10, a limiting step 12 is formed between the lower end of the piston plug 10 and the inner side wall of the outer core body 1, a cylindrical limiting body 13 capable of abutting on the limiting step 12 to form the upward sliding limit is arranged at the lower end of the piston rod 2, and the cylindrical limiting body 13 is connected with the inner side wall of the outer core body 1 in a sliding mode and is provided with a sealing structure 14.

[0040] The outer diameter of the lower end cylindrical limiting body 13 of the piston rod 2 is greater than the inner diameter of the sliding groove 11 of the piston plug 10. When the piston rod 2 slides, the cylindrical limiting body 13 abuts against the limiting step 12 to form an upper sliding limit. The sealing structure 14 between the cylindrical limiting body 13 and the inner side wall of the outer core body 1 plays a role of sliding sealing, ensuring that the soap liquid does not flow out from between the cylindrical limiting body 13 and the outer core body 1 during the upward and downward sliding of the piston rod 2.

[0041] Specifically, as shown in Figure 2 and Figure 4 , the sealing structure 14 includes a plurality of sealing ring mounting grooves 15 arranged in the axial direction on the outer side wall of the cylindrical limiting body 13. The sealing ring 16 is arranged in the sealing ring mounting groove 15. The sealing ring 16 abuts against the inner side wall of the outer core body 1 to form a seal.

[0042] The plurality of sealing rings 16 arranged on the outer side wall of the cylindrical limiting body 13 form multiple sliding seals between the sealing rings 16 and the inner side wall of the outer core body 1, which can ensure that the soap liquid does not flow out from between the cylindrical limiting body 13 and the outer core body 1 during the upward and downward sliding of the piston rod 2. The sealing ring mounting groove 15 is used for positioning and mounting the sealing ring 16.

[0043] Specifically, as shown in Figure 2 and Figure 3 , the piston plug 10 is threadedly connected to the inner side wall of the outer core body 1. The piston plug 10 is provided with a positioning step 17 at the upper end thereof.

[0044] The piston plug 10 is threadedly connected to the inner side wall of the outer core body 1, which is stable and convenient to disassemble and assemble. The positioning step 17 at the upper end of the piston plug 10 cooperates with the top end of the outer core body 1 to position and fix the piston plug 10.

[0045] Specifically, as shown in Figure 2 and Figure 5 , the liquid outlet structure 6 includes a liquid outlet nozzle 18 arranged at the bottom end of the outer core body 1. The liquid outlet nozzle 18 is provided with a liquid outlet flow channel 19 penetrating therethrough and communicating with the soap liquid storage cavity 4. The inner bottom end of the outer core body 1 is provided with a liquid outlet rolling groove 20 at the top of the liquid outlet flow channel 19. The liquid outlet rolling groove 20 is provided with a liquid outlet rolling ball 21. The liquid outlet rolling ball 21 is provided with a rolling ball fixed stroke assembly 22 above the liquid outlet rolling ball 21. The rolling ball fixed stroke assembly 22 includes a stroke cylinder 23 arranged above the liquid outlet rolling ball 21. The stroke cylinder 23 is provided with a fixed plate 33 capable of being fixed to the inner bottom end of the outer core body 1 at the lower end thereof. The stroke cylinder 23 is provided with a first stroke groove 24 penetrating therethrough and arranged in the axial direction and adapted to the liquid outlet rolling ball 21. The first stroke groove 24 is provided with a limiting rod 25 at the top thereof.

[0046] When the pressing makes the piston rod 2 slide downward to extrude the soap liquid storage cavity 4, the liquid outlet ball 21 moves axially in the first stroke groove 24 under the extrusion force to open the liquid outlet channel 19, so that the soap liquid flows out from the liquid outlet channel 19; when the piston rod 2 resets, the liquid outlet ball 21 resets to seal the liquid outlet channel 19 under the gravity; the first stroke groove 24 can guide the movement track of the liquid outlet ball 21; and the limiting rod 25 at the top of the first stroke groove 24 can prevent the liquid outlet ball 21 from falling out.

[0047] Specifically, as shown in Figure 2 and Figure 6 the liquid inlet structure 5 comprises a liquid inlet nozzle 26 arranged at the top end of the piston rod 2; the top end of the piston rod 2 is provided with a first inflow channel 27 connected with the soap liquid storage cavity 4; the outer top end of the piston rod 2 is provided with a liquid inlet rolling groove 28 at the top of the first inflow channel 27; the liquid inlet rolling groove 28 is provided with a liquid inlet ball 29; the liquid inlet nozzle 26 is provided with a second stroke groove 30 penetratingly arranged in the axial direction and matched with the liquid inlet ball 29; the top of the second stroke groove 30 is provided with a sealing ring 31, and the inner diameter of the sealing ring 31 is smaller than the diameter of the liquid inlet ball 29; and the top of the sealing ring 31 is provided with a handle 32.

[0048] The soap liquid is added into the soap liquid storage cavity 4 through the second stroke groove 30 and the first inflow channel 27; when the piston rod 2 slides downward to extrude the soap liquid storage cavity 4, the soap liquid in the soap liquid storage cavity 4 impacts upward on the liquid inlet ball 29 to make the liquid inlet ball 29 move upward in the second stroke groove 30 and be clamped on the sealing ring 31 to form a seal, thereby preventing the soap liquid from overflowing from the second stroke groove 30; when the piston rod 2 resets, the liquid inlet ball 29 returns to the liquid inlet rolling groove 28 under the gravity to seal the first inflow channel 27.

[0049] The working principle of the utility model is as follows: when in use, the piston rod 2 is pressed downward, the piston rod 2 slides downward to extrude the soap liquid storage cavity 4 and compresses the spring 8; the liquid outlet ball 21 moves axially in the first stroke groove 24 under the extrusion force to open the liquid outlet channel 19, the soap liquid flows out from the liquid outlet channel 19 to complete the liquid outlet, and the soap liquid in the soap liquid storage cavity 4 impacts upward on the liquid inlet ball 29 to make the liquid inlet ball 29 move upward and be clamped on the sealing ring 31 to form a seal;

[0050] When the pressing is stopped after the soap liquid is taken, the spring 8 drives the piston rod 2 to reset, the liquid outlet ball 21 resets to seal the liquid outlet channel 19 under the gravity, and the liquid inlet ball 29 returns to the liquid inlet rolling groove 28 under the gravity to seal the first inflow channel 27.

[0051] The specific embodiments described herein are merely illustrative of the present application. Various modifications or changes can be made by those skilled in the art to the specific embodiments described herein without departing from the spirit of the present application. Any and all such modifications or changes are intended to be included within the scope of the present application as defined by the appended claims.

[0052] Although the outer core 1, the piston rod 2, the upper sliding limiting piece 3, the soap liquid storage cavity 4, the liquid inlet structure 5, the liquid outlet structure 6, the elastic driving piece 7, the spring 8, the spring fixing cover 9, the piston plug 10, the sliding groove 11, the limiting step 12, the cylindrical limiting body 13, the sealing structure 14, the sealing ring mounting groove 15, the sealing ring 16, the positioning step 17, the liquid outlet nozzle 18, the liquid outlet flow channel 19, the liquid outlet rolling groove 20, the liquid outlet rolling ball 21, the rolling ball fixing stroke assembly 22, the stroke cylinder 23, the first stroke groove 24, the limiting rod 25, the liquid inlet nozzle 26, the first inflow channel 27, the liquid inlet rolling groove 28, the liquid inlet rolling ball 29, the second stroke groove 30, the sealing ring 31, the handle 32, the fixing plate 33 and the like are used more frequently in the description, the use of these terms is only for the convenience of describing and explaining the essence of the present application; it is contrary to the spirit of the present application to interpret them as any kind of additional limitation.

Claims

1. A soap dispenser cartridge comprising an outer cartridge body (1), characterised in that, The outer core (1) is sealed and slidingly connected with a piston rod (2), an upper sliding limiting piece (3) is arranged between the upper end of the outer core (1) and the piston rod (2), the inner part of the outer core (1) and the piston rod (2) are connected to form a soap storage cavity (4), liquid inlet structures (5) and liquid outlet structures (6) are arranged at the top end of the piston rod (2) and the bottom end of the outer core (1) respectively, and an elastic driving piece (7) is arranged between the outer part of the piston rod (2) and the outer core (1), which can drive the piston rod (2) to slide upward and reset after the piston rod (2) slides downward to extrude the soap storage cavity (4).

2. The soap dispenser core of claim 1, wherein, The elastic driving piece (7) comprises a spring (8) sleeved on the piston rod (2), the upper end of the piston rod (2) is provided with a spring fixing cover (9), the upper end of the spring (8) abuts against the spring fixing cover (9), and the lower end of the spring (8) abuts against the upper sliding limiting piece (3).

3. The soap dispenser core of claim 2, wherein, The upper sliding limiting piece (3) comprises a piston plug (10) detachably connected to the inner side wall of the outer core (1), a sliding groove (11) corresponding to the piston rod (2) is arranged through the piston plug (10), a limiting step (12) is formed between the lower end of the piston plug (10) and the inner side wall of the outer core (1), the lower end of the piston rod (2) is provided with a cylindrical limiting body (13) capable of abutting against the limiting step (12) to form upper sliding limiting, and the cylindrical limiting body (13) is slidingly connected with the inner side wall of the outer core (1) and is provided with a sealing structure (14).

4. The soap dispenser core of claim 3, wherein, The sealing structure (14) comprises a plurality of sealing ring mounting grooves (15) arranged along the axial direction on the outer side wall of the cylindrical limiting body (13), and a sealing ring (16) is arranged in the sealing ring mounting groove (15), the sealing ring (16) abuts against the inner side wall of the outer core (1) to form sealing.

5. The soap dispenser core of claim 3, wherein, The piston plug (10) is threadedly connected to the inner side wall of the outer core (1).

6. The soap dispenser core of claim 5, wherein, The upper end of the piston plug (10) is provided with a positioning step (17) for positioning.

7. The soap dispenser core of claim 2, wherein, The spring fixing cover (9) is threadedly connected with the piston rod (2).

8. The soap dispenser core according to any one of claims 1-7, wherein, The liquid outlet structure (6) comprises a liquid outlet nozzle (18) arranged at the bottom end of the outer core (1), a liquid outlet flow channel (19) communicating with the soap storage cavity (4) is arranged through the liquid outlet nozzle (18), a liquid outlet rolling groove (20) is arranged at the top of the liquid outlet flow channel (19) at the inner bottom end of the outer core (1), a liquid outlet rolling ball (21) is arranged in the liquid outlet rolling groove (20), and a rolling ball fixed stroke assembly (22) is arranged above the liquid outlet rolling ball (21).

9. The soap dispenser core of claim 8, wherein, The rolling ball fixed stroke assembly (22) comprises a stroke cylinder (23) arranged above the liquid outlet rolling ball (21), a fixed plate (33) capable of being fixed to the inner bottom end of the outer core (1) is arranged at the lower end of the stroke cylinder (23), a first stroke groove (24) distributed along the axial direction and corresponding to the liquid outlet rolling ball (21) is arranged through the stroke cylinder (23), and a limiting rod (25) is arranged at the top of the first stroke groove (24).

10. The soap dispenser core according to any one of claims 1-7, wherein, The liquid inlet structure (5) comprises a liquid inlet nozzle (26) arranged at the top end of the piston rod (2), the top end of the piston rod (2) is provided with a first inflow passage (27) communicated with the soap liquid storage cavity (4), a liquid inlet rolling groove (28) is arranged at the top of the first inflow passage (27) at the outer top end of the piston rod (2), a liquid inlet ball (29) is arranged in the liquid inlet rolling groove (28), the liquid inlet nozzle (26) is provided with a second stroke groove (30) penetratingly arranged in the axial direction and matched with the liquid inlet ball (29), the top of the second stroke groove (30) is provided with a sealing ring (31), the inner diameter of the sealing ring (31) is smaller than the diameter of the liquid inlet ball (29), and a handle (32) is arranged at the top of the sealing ring (31).

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